DOMINION BRIDGE CORP
8-A12G, 1996-12-11
HEAVY CONSTRUCTION OTHER THAN BLDG CONST - CONTRACTORS
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<PAGE>   1

                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                                    FORM 8-A

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

                          Dominion Bridge Corporation
             (Exact name of registrant as specified in its charter)

                 Delaware                                   23-2577796
(State of incorporation or organization)       (IRS Employer Identification No.)

                             500 Notre Dame Street
                                Lachine, Quebec
                                 CANADA H8S 2B2
                    (Address of principal executive offices)
                                   (Zip Code)

<TABLE>
<S>                                              <C>
If this Form relates to the registration of      If this Form relates to the registration of a class of debt 
a class of debt securities and is effective      securities and is to become effective simultaneously with the 
upon filing pursuant to General Instruction      effectiveness of a concurrent registration statement under the
A(c)(1) please check the following box. [  ]     Securities Act of 1933 pursuant to General Instruction A(c)(2) 
                                                 please check the following box. [  ]
</TABLE>

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

                                None

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

                    Preferred Stock Purchase Rights
                            (Title of Class)


                                      -1-

<PAGE>   2

Item 1.   Description of Securities To Be Registered.
          -------------------------------------------

         The Board of Directors of Dominion Bridge Corporation (the "Company")
declared a distribution of one Preferred Stock Purchase Right (a "Right") for
each outstanding share of the Company's common stock, par value $0.001 per share
(the "Common Stock") payable at the close of business on November 26, 1996 to
stockholders of record on November 26, 1996 (the "Record Date"). A Right will
automatically attach to shares of the Company's Common Stock issued after the
Record Date. The description and terms of the Rights are set forth in a Rights
Agreement (the "Rights Agreement") between the Company and Continental Stock
Transfer & Trust Company, as Rights Agent (the "Rights Agent"). Terms not
otherwise defined in this registration statement shall have the meanings set
forth in the Rights Agreement which is attached hereto and incorporated herein
by reference.

        The Rights Agreement provides for the issuance of a unit consisting of
one Right to buy one-hundredth of a share of Series One Preferred Stock to
stockholders of the Common Stock as of the Record Date and to stockholders of
Common Stock issued thereafter. The Series One Preferred Stock is a series of
the Company's authorized preferred stock (the "Series One Preferred Stock," and
each share a "Preferred Share"), and is more fully described below.

         The Rights will remain attached to and trade with the Common Stock
until the earlier to occur of (i) ten (10) days following a public announcement
that a person or group of affiliated or associated persons (an "Acquiring
Person") has acquired, or obtained the right to acquire, beneficial ownership of
shares of the Company's capital stock representing fifteen percent (15%) or more
of the voting power of all outstanding shares of capital stock of the Company
(the date of such announcement being referred to as the "Stock Acquisition
Date") or such later date as specified by the majority of the Disinterested
Directors (as described below), or (ii) ten (10) business days following the
commencement of a tender offer or exchange offer that would result in a person
or group beneficially owning outstanding shares of the Company's capital stock
representing fifteen percent (15%) or more of the voting power of all
outstanding shares of capital stock of the Company, or such later date as
specified by the majority of the Disinterested Directors. The earlier of (i) and
(ii) is referred to as the "Distribution Date." Following the Distribution Date,
the Rights will detach from the Common Stock and will be tradeable separately
from the Common Stock and Rights holders will be entitled to purchase
one-hundredth of a share of the Series One Preferred Stock at $10 per share.

         The term "Disinterested Directors" means any member of the Board of
Directors of the Company who was a member of the Board prior to the time that
the Acquiring Person became an Acquiring Person, any person who is subsequently
elected to the Board to fill a vacancy created by an increase in the size of the
Board if such person is recommended or approved by a majority of 


                                      -2-
<PAGE>   3


the Disinterested Directors, and any successor of a Disinterested Director if
such person is recommended or approved by a majority of the Disinterested
Directors, but shall not include an Acquiring Person, or an affiliate or
associate of an Acquiring Person, or any representative of the foregoing
entities.

        In the event that after such acquisition the Company is thereafter
merged and does not survive the merger or the Company's Common Stock is changed
into or exchanged for the acquiror's stock or other securities of any other
person or cash or other property (each such event is a "Merger Trigger") or
fifty percent (50%) or more of the Company's assets or earnings power are sold
in a single or related series of transactions (the "Sale of Assets Trigger"),
the Rights which are outstanding (i.e., have not previously been exercised to
purchase one-hundredth of a share of Series One Preferred Stock) at the time of
the merger or the sale "flip over" and become rights to buy shares of the
acquiror's common stock at a fifty percent (50%) discount. In addition, in the
event the acquiring person or group acquires beneficial ownership of Company
voting stock representing fifteen ("15% voting power") or merges into the
Company without exchanging the Company's Common Stock for the acquiror's stock
(the "Reverse Merger Trigger"), the Rights which are outstanding at the time of
the acquisition of 15% voting power or the merger (other than the Rights held
by the acquiring person or group) "flip in" and become rights to buy shares of
the Company's Common Stock at a fifty percent (50%) discount.

        Until the Distribution Date, the Rights will be evidenced, with respect
to any of the Common Stock certificates outstanding as of the Record Date, by
such Common Stock certificate with a copy of the summary of Rights attached
thereto. Until the Distribution Date (or earlier redemption or expiration of
the Rights) the Rights will be transferred with the Common Stock, and transfer
of those certificates will also constitute transfer of those Rights.

        As soon as practicable following the Distribution Date, separate
certificates evidencing the Rights ("Right Certificates") will be mailed to
holders of record of the Common Stock as of the close of business on the
Distribution Date and such separate Right Certificates alone will thereafter 
evidence the Rights.

        The Rights are not exercisable until the Distribution Date. The Rights
will expire on November 25, 2006 (the "Final Expiration Date"), unless the
Final Expiration Date is extended or unless the Rights are earlier redeemed or
exchanged by the Company, as described below.

         The Purchase Price, 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, in the event of, among other
events:

                (i)    a stock dividend on, or a subdivision, combination or 
                       reclassification of, the Preferred Shares, or

                (ii)   the grant to holders of the Preferred Shares of certain 
                       rights to subscribe for or purchase Preferred Shares at 
                       a price, or securities


                                      -3-

<PAGE>   4

                       convertible into Preferred Shares with a conversion
                       price, less than the then-current market price of the
                       Preferred Shares, or

                (iii)  the distribution to holders of the Preferred Shares of 
                       evidences of indebtedness or assets (excluding regular
                       periodic cash dividends paid out of earnings or retained
                       earnings or dividends payable in Preferred Shares) or of
                       subscription rights or warrants (other than those
                       referred to above).

         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 Preferred Shares will be issued (other than
fractions which are integral multiples of one one-hundredth of a Preferred
Share, which may, at the election of the Company, be evidenced by depositary
receipts) and in lieu thereof, an adjustment in cash will be made based on the
market price of the Preferred Shares on the last trading day prior to the date
of exercise.

        Except as required by law, the Series One Preferred Stock will have no
voting rights. At this time, the Company's Common Stock is the only class of
stock with voting power. Subject to the preferential rights of holders of other
series or classes of the Company's preferred stock that may be issued in the
future, upon issuance, each share of the Series One Preferred Stock will be
entitled to receive quarterly dividends per share at the greater of a fixed
amount to be determined or 100 times the dividend paid per share on the Common
Stock for the previous quarter. In the event of liquidation and subject to the
preferential rights of holders of the Company's prefered stock, if any, the
holders of the Series One Preferred Stock shall receive a liquidation payment
of $100 per share plus accrued and unpaid dividends ("Series One Participation
Preference") plus an amount, if any, which permits holders of Series One
Preferred Stock to share in any additional portion of the Company's liquidation
proceeds. The foregoing rights are protected against dilution in the event
additional shares of the Series One Preferred Stock are issued. The value of
the one one-hundredth interest in a Preferred Share purchasable upon exercise
of each Right should, because of the nature of the Preferred Shares' dividend 
and liquidation rights, approximate the value of one share of Common Stock.

         The Rights are redeemable at any time prior to ten (10) days after the
public announcement of an acquisition of beneficial ownership, by one party or
several parties acting as a group, of Company stock representing at least
fifteen percent (15%) voting power of the Company. In certain circumstances,
redemption will require the concurrence of a majority of the "Disinterested
Directors".

        The terms of the Rights may be amended by the Board without the 
consent of the holders of the Rights except that (1) amendments extending 
the redemption period must be made while the Rights are still redeemable; 
(2) certain basic terms (e.g., redemption price) may not be amended; and 
(3) after the Distribution Date, suspension of the 


                                      -4-
<PAGE>   5


effectivenss of the exclusion of an acquirer from the "flip-in" would require
the concurrence of the Disinterested Directors.

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

        The Rights have certain anti-takeover effects. The Rights would cause
substantial dilution to a person or group that attempts to acquire the Company
on terms not approved by the Company's Board, except pursuant to an offer
conditioned on a substantial number of Rights being acquired. The Rights should
not interfere with any merger or other business combination approved by the
Board since the Rights may be redeemed by the Company at the Redemption Price
in accordance with the provisions of the Rights Agreement.

        The Rights Agreement between the Company and Rights Agent, and
effective as of November 26, 1996, specifying the terms of the Rights and 
(i) including the form of the Certificate of Designation as adopted by the
Directors of the Company setting forth the terms of the Preferred Shares as 
an exhibit thereto and (ii) the form of Stockholder Letter announcing the
declaration of the Rights are attached hereto as exhibits and are incorporated
herein by reference. The foregoing description of the Rights is qualified in
its entirety by reference to such exhibits.


                                      -5-
<PAGE>   6


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

   4      Rights Agreement, dated as of November 26, 1996 and effective as 
          of November 26, 1996, between Dominion Bridge Corporation and
          Continental Stock Transfer & Trust Company which includes (i) the
          Form of Amendment to the Certificate of Incorporation of the Company
          setting forth the terms of the Series One Preferred Stock as Exhibit
          A, (ii) the Form of Rights Certificate as Exhibit B and (iii) the
          Summary of Rights to Purchase Preferred Stock as Exhibit C.

   99     Form of Stockholder Letter.


                                      -6-
<PAGE>   7

                                   SIGNATURE

         Pursuant to the requirements of Section 12 of the Securities Exchange
Act of 1934, the registrant has duly caused this registration statement to be
signed on its behalf by the undersigned thereunto duly authorized.


                                      DOMINION BRIDGE CORPORATION

                                      By:           /s/ OLIVIER DESPRES
                                             ---------------------------------- 
                                      Name:             Olivier Despres
                                      Title:  Vice President and General Counsel

December 11, 1996


                                      -7-
<PAGE>   8



                                  EXHIBIT LIST

  4    Rights Agreement, dated as of November 26, 1996 and effective as of 
       November 26, 1996, between Dominion Bridge Corporation and Continental
       Stock Transfer & Trust Company which includes (i) the Form of Amendment
       to the Certificate of Incorporation of the Company setting forth the
       terms of the Series One Preferred Stock as Exhibit A, (ii) the Form of
       Rights Certificate as Exhibit B and (iii) the Summary of Rights to
       Purchase Preferred Stock as Exhibit C.

 99    Form of Stockholder Letter.


                                      -8-

<PAGE>   1

                                                                    Exhibit 4


                          DOMINION BRIDGE CORPORATION

                                      AND

                   CONTINENTAL STOCK TRANSFER & TRUST COMPANY

                                  RIGHTS AGENT

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


                                RIGHTS AGREEMENT

                         DATED AS OF NOVEMBER 26, 1996

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


<PAGE>   2

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
Section                                                                                                          Page
- -------                                                                                                          ----
<S>                                                                                                              <C>
1. Certain Definitions............................................................................................1

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

3. Issue of Rights Certificates...................................................................................4

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

5. Countersignature And Registration..............................................................................7

6. Transfer, Split Up, Combination and Exchange of Rights Certificates; Mutilated, Destroyed, Lost or Stolen
Rights Certificates...............................................................................................8

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

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

9. Reservation and Availability of Capital Stock.................................................................11

10. Preferred Stock Record Date..................................................................................12

11. Adjustment of Purchase Price, Number and Kind of Shares or Number of Rights..................................13

11a. Exchange of Rights..........................................................................................21

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

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

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

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

16. Agreement of Rights Holders..................................................................................26
</TABLE>

                                       i
<PAGE>   3
                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
Section                                                                                                          Page
- -------                                                                                                          ----
<S>                                                                                                              <C>
17. Rights Certificate Holder Not Deemed a Stockholder...........................................................27

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

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

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

21. Change of Rights Agent.......................................................................................30

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

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

24. Notice of Certain Events.....................................................................................33

25. Notices......................................................................................................34

26. Supplements and Amendments...................................................................................35

27. Successors...................................................................................................35

28. Determinations and Actions by the Board of Directors, Etc....................................................36

29. Benefits of this Agreement...................................................................................36

30. Severability.................................................................................................37

31. Governing Law................................................................................................37

32. Counterparts.................................................................................................37

33. Descriptive Headings.........................................................................................37
</TABLE>

Exhibit A -- Certificate of Designation, Preferences and Rights
Exhibit B -- Form of Rights Certificate
Exhibit C -- Summary of Rights to Purchase Preferred Stock

                                       ii
<PAGE>   4
                                RIGHTS AGREEMENT

         This RIGHTS AGREEMENT is entered into by and between Dominion Bridge
Corporation, a Delaware corporation (the "Company"), and Continental Stock
Transfer & Trust Company (the "Rights Agent") as of this 26th day of November,
1996 (the "Agreement").

                              W I T N E S S E T H

         WHEREAS, on November 26, 1996 (the "Rights Declaration Date"), the
Board of Directors of the Company authorized and declared a distribution of one
Right for each share of common stock without par value, of the Company (the
"Common Stock") outstanding at the close of business on November 26, 1996 (the
"Record Date"), and has authorized the issuance on the close of business on
November 26, 1996 of one Right (as such number may hereinafter be adjusted
pursuant to the provisions of Section 11(p) hereof) for each share of Common
Stock of the Company issued between the Record Date (whether originally issued
or delivered from the Company's treasury) and the Distribution Date or the
Expiration Date, whichever shall occur first, each Right initially representing
the right to purchase one one-hundredth of a share of Series One of Class A
Preferred Stock of the Company having the rights, powers and preferences set
forth in the form of Certificate of Designation, Preferences and Rights
attached hereto as Exhibit A, upon the terms and subject to the conditions
hereinafter set forth (the "Rights");

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

        1. Certain Definitions.

         For purposes of this Agreement, the following terms have the meanings
indicated:

         (a) "Acquiring Person" shall mean any Person who or which, together
with all Affiliates and Associates of such Person, shall be the Beneficial Owner
of outstanding shares of Common Stock representing 15% or more of the Voting
Power, but shall not include the Company, any Subsidiary of the Company, Michel
L. Marengere or any Affiliate or Associate of Michel L. Marengere, any employee
benefit plan of the Company or of any Subsidiary of the Company, or any Person
or entity organized, appointed or established by the Company for or pursuant to
the terms of any such plan.

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

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

<PAGE>   5

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

            (ii) which such Person or any of such Person's Affiliates or
         Associates, directly or indirectly, has the right to vote or dispose
         of or has "beneficial ownership" of (as determined pursuant to Rule
         13d-3 of the General Rules and Regulations under the Exchange Act),
         including pursuant to any agreement, arrangement or understanding,
         whether or not in writing; provided, however, that a Person shall not
         be deemed the "Beneficial Owner" of, or to "beneficially own," any
         security under this subparagraph (ii) as a result of an agreement,
         arrangement or understanding to vote such security if such agreement,
         arrangement or understanding: (A) arises solely from a revocable proxy
         given in response to a public proxy or consent solicitation made
         pursuant to, and in accordance with, the applicable provisions of the
         General Rules and Regulations under the Exchange Act, and (B) is not
         also then reportable by such Person on Schedule 13D under the Exchange
         Act (or any comparable or successor report); or

            (iii) which are beneficially owned, directly or indirectly, by any
         other Person (or any Affiliate or Associate thereof) with which such
         Person (or any of such Person's Affiliates or Associates) has any
         agreement, arrangement or understanding (whether or not in writing)
         for the purpose of acquiring, holding, voting (except pursuant to a
         revocable proxy as described in the proviso to subparagraph (ii) of
         this paragraph (c)) or disposing of any voting securities of the
         Company.

further, notwithstanding anything in this paragraph (c) to the contrary, a
Person engaged in the business of underwriting securities shall not be deemed
the "Beneficial Owner" of, or to "Beneficially Own," any securities acquired in
good faith in a firm commitment underwriting until the expiration of forty days
after the date of such acquisition.

                                      -2-

<PAGE>   6

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

         (e) "Close of business" on any given date shall mean 5:00 P.M., New
York City time, on such date; provided, however, that if such date is not a
Business Day, it shall mean 5:00 P.M., New York City time, on the next
succeeding Business Day.

         (f) "Common Stock" shall mean the common stock, without par value, of
the Company, except that "Common Stock" when used with reference to any Person
other than the Company shall mean the capital stock of such Person with the
greatest aggregate voting power, or the equity securities or other equity
interest having power to control or direct the management, of such Person.

         (g) "Disinterested Director" shall mean (i) any member of the Board of
Directors of the Company, while such Person is a member of the Board, who is
not an Acquiring Person or an Affiliate or Associate of an Acquiring Person, or
a representative of an Acquiring Person or of any such Affiliate or Associate,
and was a member of the Board prior to the time that the Acquiring Person
became an Acquiring Person, or (ii) any Person who subsequently becomes a
member of the Board to fill a vacancy created by an increase in the size of the
Board, while such Person is a member of the Board, who is not an Acquiring
Person or an Affiliate or Associate of an Acquiring Person, or a representative
of an Acquiring Person or of any such Affiliate or Associate, if such Person's
nomination for election by the shareholders or election to the Board is
recommended or approved by a majority of the Disinterested Directors, or (iii)
any successor of a Disinterested Director who is not an Acquiring Person or an
Affiliate or Associate of an Acquiring Person, or a representative of an
Acquiring Person or of any such Affiliate or Associate, if such Person's
nomination for election by the shareholders or election to the Board is
recommended or approved by a majority of the Disinterested Directors.

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

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

         (j) "Preferred Stock" shall mean shares of Series One of Class A
Preferred Stock, par value $.01 per share, of the Company.

         (k) "Section 11(a)(ii) Event" shall mean any event described in
Section 11(a)(ii)(1) or (2) hereof.

         (l) "Section 13 Event" shall mean any event described in clauses (x),
(y) or (z) of Section 13 hereof.

                                      -3-



<PAGE>   7

         (m) "Stock Acquisition Date" shall mean the first date of public
announcement (which, for purposes of this definition, shall include, without
limitation, a report filed pursuant to Section 13(d) under the Exchange Act) by
the Company or an Acquiring Person that an Acquiring Person has become such.
        
         (n) "Subsidiary" shall mean, with reference to any Person, any
corporation of which an amount of voting securities sufficient to elect at least
a majority of the directors of such corporation is beneficially owned, directly
or indirectly, by such Person, or otherwise controlled by such Person.
        
         (o) "Triggering Event" shall mean any Section 11(a)(ii) Event or
Section 13(a) Event.

         (p) "Voting Power" shall mean, at any particular point in time, the
total number of votes that all holders of the then outstanding shares of capital
stock of the Company would be entitled to cast in an annual election of the
directors of the Company, voting together as a single class.

         2. Appointment of Rights Agent.

         The Company hereby appoints the Rights Agent to act as agent for the
Company and the holders of the Rights (who, in accordance with Section 3
hereof, shall prior to the Distribution Date also be the holders of the Common
Stock) 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.

         3. Issue of Rights Certificates.

         (a) Until the earlier of (i) the close of business on the tenth day
(or, if the tenth day after the Stock Acquisition Date occurs before the Record
Date, the close of business on the Record Date), or such later date as
specified by the majority of the Disinterested Directors, after the Stock
Acquisition Date, or (ii) the close of business on the tenth business day, or
such later date as specified by the majority of the Disinterested Directors,
after the date that a tender or exchange offer by any Person (other than the
Company, any Subsidiary of the Company, Michael L. Marengere or any Affiliate
or Associate of Michel L. Marengere, any employee benefit plan of the Company,
or of any Subsidiary of the Company, or any Person or entity organized,
appointed or established by the Company for or pursuant to the terms of any
such plan) is first published or sent or given within the meaning of Rule
14e-2(a) of the General Rules and Regulations under the Exchange Act, if upon
consummation thereof, such Person would be the Beneficial Owner of shares of
Voting Stock representing 15% or more of the Voting Power (the earlier of (i)
and (ii) being herein 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 

                                      -4-
<PAGE>   8

registered in the names of the holders of the Common Stock (which certificates
for Common Stock shall be deemed also to be certificates for Rights) and not by
separate certificates, and (y) the Rights will be transferable only in
connection with the transfer of the underlying shares of Common Stock (including
a transfer to the Company). As soon as practicable after the Distribution Date,
the Company will provide to the Rights Agent a list certified by the transfer
agent of the record holders of the Common Stock and the Rights Agent will send,
by first-class, insured, postage-prepaid mail, to each such record holder of the
Common Stock as of the close of business on the Distribution Date, at the
address of such holder shown on the records of the Company, one or more rights
certificates, in substantially the form of Exhibit B hereto (the "Rights
Certificates"), evidencing one Right for each share of Common Stock so held,
subject to adjustment as provided herein. In the event that an adjustment in the
number of Rights per share of Common Stock has been made pursuant to Section
11(p) hereof, at the time of distribution of the Rights Certificates, the
Company shall make the necessary and appropriate rounding adjustments in
accordance with Section 14(a) hereof) so that Rights Certificates representing
only whole numbers of Rights are distributed and cash is paid in lieu of any
fractional Rights. As of and after the Distribution Date, the Rights will be
evidenced solely by such Rights Certificates.

         (b) As promptly as practicable following the Record Date, the Company
will send a copy of a Summary of Rights, in substantially the form attached
hereto as Exhibit C (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, at the address of such holder shown on the records of the
Company. With respect to certificates for the Common Stock outstanding as of
the Record Date, until the Distribution Date, the Rights will be evidenced by
such certificates for the Common Stock and the registered holders of the Common
Stock shall also be the registered holders of the associated Rights. Until the
earlier of the Distribution Date or the Expiration Date (as such term is
defined in Section 7 hereof), the transfer of any certificates representing
shares of Common Stock in respect of which Rights have been issued shall also
constitute the transfer of the Rights associated with such shares of Common
Stock.

         (c) Rights shall be issued in respect of all shares of Common Stock
which are issued after the Record Date but prior to the earlier of the
Distribution Date or the Expiration Date. Certificates representing such shares
of Common Stock shall also be deemed to be certificates for Rights, and shall
bear the following legend:

          This certificate also evidences and entitles the holder hereof to
          certain Rights as set forth in the Rights Agreement between Dominion
          Bridge Corporation (the "Company") and Continental Stock Transfer &
          Trust Company (the "Rights Agent") dated as of November 26, 1996 (the
          "Rights Agreement") the terms of which are hereby incorporated herein
          by reference and a copy of which is on file at the principal offices
          of the Company.  Under certain circumstances, as set forth in the
          Rights Agreement, such Rights will be evidenced by separate
          certificates and will no longer be evidenced by this certificate. The
          Company will mail or 

                                      -5-

<PAGE>   9

                 cause to be mailed to the holder of this certificate a copy of
                 the Rights Agreement, as in effect on the date of mailing,
                 without charge promptly after receipt of a written request
                 therefor. Under certain circumstances set forth in the Rights
                 Agreement, Rights issued to, or held by, any Person who is, was
                 or becomes an Acquiring Person or any Affiliates or Associates
                 thereof (as such terms are defined in the Rights Agreement),
                 whether currently held by or on behalf of such Person or by any
                 subsequent holder, may become null and void. Rights will expire
                 November 25, 2006 unless earlier redeemed as described in the
                 Rights Agreement.

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

         4. Form of Rights Certificates.

         (a) The Rights Certificates (and the forms of election to purchase and
of assignment to be printed on the reverse thereof) shall each be substantially
in the form set forth in Exhibit B hereto and may have such marks of
identification or designation and such legends, summaries or endorsements
printed thereon as the Company may deem appropriate and as are not inconsistent
with the provisions of this Agreement, or as may be required to comply with any
applicable law or with any rule or regulation made pursuant thereto or with any
rule or regulation of any stock exchange on which the Rights may from time to
time be listed, or to conform to usage. Subject to the provisions of Section 11
and Section 22 hereof, the Rights 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 share of Preferred Stock as
shall be set forth therein at the price set forth therein (such exercise price
per one one-hundredth of a share being hereinafter called the "Purchase Price"),
but the amount and type of securities purchasable upon the exercise of each
Right and the Purchase Price thereof shall be subject to adjustment as provided
herein.

         (b) Any Rights Certificate issued pursuant to Section 3(a) or Section
22 hereof that represents Rights beneficially owned by: (i) an Acquiring Person
or any Associate or Affiliate of an Acquiring Person, (ii) a transferee of an
Acquiring Person (or of any such Associate or Affiliate) who becomes a
transferee after the Acquiring Person becomes such, or (iii) a transferee of an
Acquiring Person (or of any such Associate or Affiliate) who becomes a
transferee prior to or concurrently with the Acquiring Person becoming such and
receives such Rights pursuant to either (A) a transfer (whether or not for
consideration) from the Acquiring Person to holders of equity interests in such
Acquiring Person or to any Person with whom such 

                                      -6-
<PAGE>   10

Acquiring Person has any continuing agreement, arrangement or understanding
regarding the transferred Rights or (B) a transfer which the Board of Directors
of the Company has determined is part of a plan, arrangement or understanding
which has as a primary purpose or effect avoidance of Section 7(e) hereof, and
any Rights Certificate issued pursuant to Section 6 or Section 11 hereof upon
transfer, exchange, replacement or adjustment of any other Rights Certificate
referred to in this sentence, shall contain (to the extent feasible) the
following legend:

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

         5. Countersignature and Registration.

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

         (b) Following the Distribution Date, the Rights Agent will keep or
cause to be kept, at its principal office or offices designated as the
appropriate place for surrender of Rights Certificates upon exercise or
transfer, books for registration and transfer of the Rights Certificates issued
hereunder. Such books shall show the names and addresses of the respective
holders of the Rights Certificates, the number of Rights evidenced on its face
by each of the Rights Certificates, the Certificate Number and the date of each
of the Rights Certificates.

                                      -7-
<PAGE>   11
          6. Transfer, Split Up, Combination and Exchange of Rights
             Certificates; Mutilated, Destroyed, Lost or Stolen Rights 
             Certificates.

         (a) Subject to the provisions of Section 4(b), Section 7(e) and Section
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 Rights
Certificate or Certificates may be transferred, split up, combined or exchanged
for another Rights Certificate or Certificates entitling the registered holder
to purchase a like number of one-hundredths of a share of Preferred Stock (or,
following a Triggering Event, Common Stock, other securities, cash or other
assets, as the case may be) as the Rights Certificate or Certificates
surrendered then entitled such holder (or former holder in the case of a
transfer) to purchase. Any registered holder desiring to transfer, split up,
combine or exchange any Rights Certificate or Certificates shall make such
request in writing delivered to the Rights Agent, and shall surrender the Rights
Certificate or Certificates to be transferred, split up, combined or exchanged
at the principal office or offices of the Rights Agent designated for such
purpose. Neither the Rights Agent nor the Company shall be obligated to take any
action whatsoever with respect to the transfer of any such surrendered Rights
Certificate until the registered holder shall have completed and signed the
certificate contained in the form of assignment on the reverse side of such
Rights Certificate and shall have provided such additional evidence of the
identity of the Beneficial Owner (or former Beneficial Owner) or Affiliates or
Associates thereof as the Company shall reasonably request. Thereupon the Rights
Agent shall, subject to Section 4(b), Section 7(e) and Section 14 hereof,
countersign and deliver to the Person entitled thereto a Rights Certificate or
Rights Certificates, as the case may be, as so requested. The Company may
require payment of a sum sufficient to cover any tax or governmental charge that
may be imposed in connection with any transfer, split up, combination or
exchange of Rights Certificates.

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

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

         (a) Subject to Section 7(e) hereof, the registered holder of any Rights
Certificate may exercise the Rights evidenced thereby (except as otherwise
provided herein, including, without limitation, the restrictions on
exercisability set forth in Section 9(c), Section 11(a)(iii) and Section 23(a)
hereof) in whole or in part at any time after the Distribution Date upon
surrender of the Rights Certificate, with the form of election to purchase and
the certificate on the reverse side thereof duly executed, to the Rights Agent
at the principal office or offices of 

                                      -8-
<PAGE>   12

the Rights Agent designated for such purpose, together with payment of the
aggregate Purchase Price with respect to the total number of one one-hundredths
of a share of Preferred Stock (or other securities, cash or other assets, as the
case may be) as to which such surrendered Rights are then exercisable, at or
prior to the earlier of (i) the close of business on November 25, 2006 (the
"Final Expiration Date") or (ii) the time at which the Rights are redeemed as
provided in Section 23 hereof (the earlier of (i) and (ii) being herein referred
to as the "Expiration Date").

         (b) The Purchase Price for each one one-hundredth of a share of
Preferred Stock pursuant to the exercise of a Right shall initially be $10.00,
and shall be subject to adjustment from time to time as provided in Sections 11
and 13(a) hereof and shall be payable in accordance with paragraph (c) below
(the "Purchase Price").

         (c) Upon receipt of a Rights Certificate representing exercisable
Rights, with the form of election to purchase and the certificate duly
executed, accompanied by payment, with respect to each Right so exercised, of
the Purchase Price per one one-hundredth of a share of Preferred Stock (or
other shares, securities, cash or other assets, as the case may be) to be
purchased as set forth below and an amount equal to any applicable transfer
tax, the Rights Agent shall, subject to Section 20(k) hereof, thereupon
promptly (i) (A) requisition from any transfer agent of the shares of Preferred
Stock (or make available, if the Rights Agent is the transfer agent for such
shares) certificates for the total number of one one-hundredths of a share of
Preferred Stock to be purchased, and the Company hereby irrevocably authorizes
its transfer agent to comply with all such requests, or (B) if the Company
shall have elected to deposit the total number of shares of Preferred Stock
issuable upon exercise of the Rights hereunder with a depositary agent,
requisition from the depositary agent depositary receipts representing such
number of one one-hundredths of a share of Preferred Stock as are to be
purchased (in which case certificates for the shares of Preferred Stock
represented by such receipts shall be deposited by the transfer agent with the
depositary agent), and the Company will direct the depositary agent to comply
with such request, (ii) requisition from the Company the amount of cash, if
any, to be paid in lieu of fractional shares in accordance with Section 14
hereof, (iii) after receipt of such certificates or depositary receipts, cause
the same to be delivered to or upon the order of the registered holder of such
Rights Certificate, registered in such name or names as may be designated by
such holder, and (iv) after receipt thereof, deliver such cash, if any, to or
upon the order of the registered holder of such Rights Certificate. The payment
of the Purchase Price (as such amount may be reduced pursuant to Section
11(a)(iii) hereof) may be made (x) in cash or by certified bank check or money
order payable to the order of the Company, or (y) if the Company shall in its
sole discretion so consent, by delivery of a certificate or certificates (with
appropriate stock powers executed in blank attached thereto) evidencing a
number of shares of Common Stock equal to the then Purchase Price divided by
the closing price (as determined pursuant to Section 11(d) hereof) per share of
Common Stock on the Trading Date immediately preceding the date of such
exercise. In the event that the Company is obligated to issue other securities
(including Common Stock) of the Company, pay cash and/or distribute other
property pursuant to Section 11(a)(iii) hereof, the Company will make all
arrangements necessary so that such 

                                      -9-
<PAGE>   13
other securities, cash and/or other property are available for distribution by
the Rights Agent, if and when appropriate.

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

         (e) Notwithstanding anything in this Agreement to the contrary, from
and after the first occurrence of a Section 11(a)(ii) Event, any Rights
beneficially owned by (i) an Acquiring Person or an Associate or Affiliate of an
Acquiring Person, (ii) a transferee of an Acquiring Person (or of any such
Associate or Affiliate) who becomes a transferee after the Acquiring Person
becomes such, or (iii) a transferee of an Acquiring Person (or of any such
Associate or Affiliate) who becomes a transferee prior to or concurrently with
the Acquiring Person becoming such and receives such Rights pursuant to either
(A) a transfer (whether or not for consideration) from the Acquiring Person to
holders of equity interests in such Acquiring Person or to any Person with whom
the Acquiring Person has any continuing agreement, arrangement or understanding
regarding the transferred Rights or (B) a transfer which the Board of Directors
of the Company has determined is part of a plan, arrangement or understanding
which has as a primary purpose or effect the avoidance of this Section 7(e)
shall become null and void without any further action, and no holder of such
Rights shall have any rights whatsoever with respect to such Rights, whether
under any provision of this Agreement or otherwise. The Company shall use all
reasonable efforts to ensure that the provisions of this Section 7(e) and
Section 4(b) hereof are complied with, but shall have no liability to any holder
of Rights Certificates or other Person as a result of its failure to make any
determinations with respect to an Acquiring Person or its Affiliates, Associates
or transferees hereunder.

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

            8. Cancellation and Destruction of Rights Certificates.

         All Rights Certificates surrendered for the purpose of exercise,
transfer, split up, combination or exchange shall, if surrendered to the Company
or any of its agents, be delivered to the Rights Agent for cancellation or in
canceled form, or, if surrendered to the Rights Agent, shall be canceled by it,
and no Rights Certificates shall be issued in lieu thereof except as

                                      -10-
<PAGE>   14

expressly permitted by any of the provisions of this Agreement. The Company
shall deliver to the Rights Agent for cancellation and retirement, and the
Rights Agent shall so cancel and retire, any other Rights Certificate purchased
or acquired by the Company otherwise than upon the exercise thereof. The Rights
Agent shall deliver all canceled Rights Certificates to the Company, or shall,
at the written request of the Company, destroy such canceled Rights
Certificates, and in such case shall deliver a certificate of destruction
thereof to the Company.

         9. Reservation and Availability of Capital Stock.

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

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

         (c) The Company shall use its best efforts to (i) file, as soon as
practicable following the earliest date after the first occurrence of a Section
11(a)(ii) Event on which the consideration to be delivered by the Company upon
exercise of the Rights has been determined in accordance with Section 11(a)(iii)
hereof, or as soon as is required by law following the Distribution Date, as the
case may be, a registration statement under the Securities Act of 1933 (the
"Act") with respect to the securities purchasable upon exercise of the Rights on
an appropriate form, (ii) cause such registration statement to become effective
as soon as practicable after such filing, and (iii) cause such registration
statement to remain effective (with a prospectus at all times meeting the
requirements of the Act) until the earlier of (A) the date as of which the
Rights are no longer exercisable for such securities or (B) the date of the
expiration of the Rights. The Company will also take such action as may be
appropriate under, or to ensure compliance with, the securities or "blue sky"
laws of the various states in connection with the exercisability of the Rights.
The Company may temporarily suspend, for a period of time not to exceed ninety
(90) days after the date set forth in clause (i) of the first sentence of this
Section 9(c), the exercisability of the Rights in order to prepare and file such
registration statement and permit it to become effective. Upon any such
suspension, the Company shall issue a public announcement stating that the
exercisability of the Rights has been temporarily suspended, as well as a public
announcement at such time as the suspension is no longer in effect.
Notwithstanding any 

                                      -11-
<PAGE>   15
provision of this Agreement to the contrary, the Rights shall not be exercisable
in any jurisdiction unless the requisite qualification in such jurisdiction
shall have been obtained.

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

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

         10. Preferred Stock Record Date.

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

                                      -12-
<PAGE>   16
dividends or other distributions or to exercise any preemptive rights, and shall
not be entitled to receive any notice of any proceedings of the Company, except
as provided herein.

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

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

         (a)

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

            (ii) In the event:

                  (1) any Acquiring Person or any Associate or Affiliate of any
            Acquiring Person, at any time after the date of this Agreement,
            directly or indirectly, shall merge into the Company or otherwise
            combine with the Company and the Company shall be the continuing or
            surviving corporation of such merger or combination and the Common
            Stock of the Company shall remain outstanding and unchanged, or

                                      -13-
<PAGE>   17
                  (2) any Person (other than the Company, any Subsidiary of the
            Company, Michel L. Marengere or any Affiliate or Associate of
            Michel L. Marengere any employee benefit plan of the Company or of
            any Subsidiary of the Company, or any Person or entity appointed or
            established by the Company for or pursuant to the terms of any such
            plan), alone or together with its Affiliates and Associates, shall,
            at any time after the Rights Declaration Date, become the
            Beneficial Owner of shares of Voting Stock representing 15% or more
            of the Voting Power, other than pursuant to any transaction set
            forth in Section 13(a) hereof,

         then, promptly following five (5) days after the date of the
         occurrence of an event described in Section 11(a)(ii)(2) hereof and
         promptly following the occurrence of an event described in Section
         11(a)(ii)(1) hereof, proper provision shall be made so that each
         holder of a Right (except as provided below and in Section 7(e)
         hereof) shall thereafter 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 a number of one one-hundredths of
         a share of Preferred Stock, such number of shares of Common Stock of
         the Company as shall equal the result obtained by (x) multiplying the
         then current Purchase Price by the then number of one one-hundredths
         of a share of Preferred Stock for which a Right was exercisable
         immediately prior to the first occurrence of a Section 11(a)(ii)
         Event, and (y) dividing that product (which, following such first
         occurrence, shall thereafter be referred to as the "Purchase Price"
         for each Right and for all purposes of this Agreement) by 50% of the
         current market price (determined pursuant to Section 11(d) hereof) per
         share of Common Stock on the date of such first occurrence (such
         number of shares hereinafter referred to as the "Adjustment Shares").

            (iii) 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 is not sufficient to permit the exercise in
         full of the Rights in accordance with the foregoing subparagraph (ii)
         of this Section 11(a), the Company shall: (A) determine the excess of
         (1) the value of the Adjustment Shares issuable upon the exercise of a
         Right (the "Current Value") over (2) the Purchase Price (such excess,
         the "Spread"), and (B) with respect to each Right, make adequate
         provision to substitute for the Adjustment Shares, upon payment of the
         applicable Purchase Price, (1) cash, (2) a reduction in the Purchase
         Price, (3) Common 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, "common stock equivalents")), (4) debt securities of
         the Company, (5) other assets, or (6) any combination of the foregoing
         having an aggregate value equal to the Current Value, where such
         aggregate value has been determined by the Board of Directors of the
         Company based upon the advice of a 

                                      -14-
<PAGE>   18
         nationally recognized investment banking firm selected by the Board of
         Directors of the Company; provided, however, if the Company shall not
         have made adequate provision to deliver value pursuant to clause (B)
         above within thirty (30) days following the later of (x) the first
         occurrence of a Section 11(a)(ii) Event and (y) the date on which the
         Company's right of redemption pursuant to Section 23(a) expires (the
         later of (x) and (y) being referred to herein as the "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. 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 more than ninety
         (90) days after the Section 11(a)(ii) Trigger Date, in order that the
         Company may seek shareholder approval for the authorization of such
         additional shares (such period, as it may be extended, the
         "Substitution Period"). To the extent that the Company determines that
         some action need be taken pursuant to the first and/or second sentences
         of this Section 11(a)(iii), the Company (x) shall provide, subject to
         Section 7(e) hereof, that such action shall apply uniformly to all
         outstanding Rights, and (y) may suspend the exercisability of the
         Rights until the expiration of the Substitution Period in order to seek
         any authorization of additional shares and/or to decide the appropriate
         form of distribution to be made pursuant to such first sentence. In the
         event of any such suspension, the Company shall issue a public
         announcement stating that the exercisability of the Rights has been
         temporarily suspended, as well as a public announcement at such time as
         the suspension is no longer in effect. For purposes of this Section
         11(a)(iii), 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 value of any
         "common stock equivalent" shall be deemed to have the same value as the
         Common Stock on such date.

         (b) In case the Company shall fix a record date for the issuance of
rights, options or warrants to all holders of Preferred Stock entitling them to
subscribe for or purchase (for a period expiring within forty-five (45)
calendar days after such record date) Preferred Stock (or shares having the
same rights, privileges and preferences as the shares of Preferred Stock
("equivalent preferred stock")) or securities convertible into Preferred Stock
or equivalent preferred stock at a price per share of Preferred Stock or per
share of equivalent preferred stock (or having a conversion price per share, if
a security convertible into Preferred Stock or equivalent preferred stock) less
than the current market price (as determined pursuant to Section 11(d) hereof)
per share of Preferred Stock on such record date, the Purchase Price to be in
effect after such record date shall be determined by multiplying the Purchase
Price in effect immediately prior to such record date by a fraction, the
numerator of which shall be the number 

                                      -15-
<PAGE>   19
of shares of Preferred Stock outstanding on such record date, plus the number of
shares of Preferred Stock which the aggregate offering price of the total number
of shares of Preferred Stock and/or equivalent preferred stock so to be offered
(and/or the aggregate initial conversion price of the convertible securities so
to be offered) would purchase at such current market price, and the denominator
of which shall be the number of shares of Preferred Stock outstanding on such
record date, plus the number of additional shares of Preferred Stock and/or
equivalent preferred stock to be offered for subscription or purchase (or into
which the convertible securities so to be offered are initially convertible). In
case such subscription price may be paid by delivery of consideration part or
all of which may be in a form other than cash, the value of such consideration
shall be as determined in good faith by the Board of Directors of the Company,
whose determination shall be described in a statement filed with the Rights
Agent and shall be binding on the Rights Agent and the holders of the Rights.
Shares of Preferred Stock owned by or held for the account of the Company shall
not be deemed outstanding for the purpose of any such computation. Such
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 a distribution to
all holders of Preferred Stock (including any such distribution made in
connection with a consolidation or merger in which the Company is the
continuing corporation) of evidences of indebtedness, cash (other than a
regular quarterly cash dividend out of the earnings or retained earnings of the
Company), assets (other than a dividend payable in Preferred Stock, but
including any dividend payable in stock other than Preferred Stock) or
subscription rights or warrants (excluding those referred to in Section 11(b)
hereof), the Purchase Price to be in effect after such record date shall be
determined by multiplying the Purchase Price in effect immediately prior to
such record date by a fraction, the numerator of which shall be the current
market price (as determined pursuant to Section 11(d) hereof) per share of
Preferred Stock on such record date, less the fair market value (as determined
in good faith by the Board of Directors of the Company, whose determination
shall be described in a statement filed with the Rights Agent) of the portion
of the cash, assets or evidences of indebtedness so to be distributed or of
such subscription rights or warrants applicable to a share of Preferred Stock,
and the denominator of which shall be such current market price (as determined
pursuant to Section 11(d) hereof) per share of Preferred Stock. Such
adjustments shall be made successively whenever such a record date is fixed,
and in the event that such distribution is not so made, the Purchase Price
shall be adjusted to be the Purchase Price which would have been in effect if
such record date had not been fixed.

         (d)

            (i) For the purpose of any computation hereunder, other than
         computations made pursuant to Section 11(a)(iii) hereof, the "current
         market price" per share of Common Stock on any date shall be deemed to
         be the average of the daily closing prices per share of such Common
         Stock for the thirty (30) 

                                      -16-
<PAGE>   20
         consecutive Trading Days (as such term is hereinafter defined)
         immediately prior to such date, and for purposes of computations made
         pursuant to Section 11(a)(iii) hereof, the "current market price" per
         share of Common Stock on any date shall be deemed to be the average of
         the daily closing prices per share of such Common Stock for the ten
         (10) consecutive Trading Days immediately following such date;
         provided, however, that in the event that the current market price per
         share of the Common Stock is determined during a period following the
         announcement by the issuer of such Common Stock of (A) a dividend or
         distribution on such Common Stock payable in shares of such Common
         Stock or securities convertible into shares of such Common Stock (other
         than the Rights), or (B) any subdivision, combination or
         reclassification of such Common Stock, and prior to the expiration of
         the requisite thirty (30) Trading Day or ten (10) Trading Day period,
         as set forth above, after the ex-dividend date for such dividend or
         distribution, or the record date for such subdivision, combination or
         reclassification, then, and in each such case, the "current market
         price" shall be properly adjusted to take into account ex-dividend
         trading. The closing price for each day shall be the last sale price,
         regular way, or, in case no such sale takes place on such day, the
         average of the closing bid and asked prices, regular way, in either
         case as reported in the principal consolidated transaction reporting
         system with respect to securities listed or admitted to trading on the
         New York Stock Exchange or, if the shares of Common Stock 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 shares of Common Stock are listed or admitted to
         trading or, if the shares of Common Stock are not listed or admitted to
         trading on any national securities exchange, the last quoted price or,
         if not so quoted, the average of the high bid and low asked prices in
         the over-the-counter market, as reported by the National Association of
         Securities Dealers, Inc. Automated Quotation System ("NASDAQ") or such
         other system then in use, or, if on any such date the shares of Common
         Stock are not quoted by any such organization, the average of the
         closing bid and asked prices as furnished by a professional market
         maker making a market in the Common Stock selected by the Board of
         Directors of the Company. If on any such date no market maker is making
         a market in the Common Stock, 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. The term "Trading Day" shall mean a day on which
         the principal national securities exchange on which the shares of
         Common Stock are listed or admitted to trading is open for the
         transaction of business or, if the shares of Common Stock are not
         listed or admitted to trading on any national securities exchange, a
         Business Day. If the Common Stock is not publicly held or not so listed
         or traded, "current market price" per share shall mean the fair value
         per share as determined in good faith by 

                                      -17-
<PAGE>   21
         the Board of Directors of the Company, whose determination shall be
         described in a statement filed with the Rights Agent and shall be
         conclusive for all purposes.

            (ii) For the purpose of any computation hereunder, the "current
         market price" per share of Preferred Stock shall be determined in the
         same manner as set forth above for the Common Stock in clause (i) of
         this Section 11(d) (other than the last sentence thereof). If the
         current market price per share of Preferred Stock cannot be determined
         in the manner provided above or if the Preferred Stock is not publicly
         held or listed or traded in a manner described in clause (i) of this
         Section 11(d), the "current market price" per share of Preferred Stock
         shall be conclusively deemed to be an amount equal to 100 (as such
         number may be appropriately adjusted for such events as stock splits,
         stock dividends and recapitalizations with respect to the Common Stock
         occurring after the date of this Agreement) multiplied by the current
         market price per share of the Common Stock. If neither the Common
         Stock nor the Preferred Stock is publicly held or so listed or traded,
         "current market price" per share of the Preferred Stock shall mean the
         fair value per share as determined in good faith by the Board of
         Directors of the Company, whose determination shall be described in a
         statement filed with the Rights Agent and shall be conclusive for all
         purposes. For all purposes of this Agreement, the "current market
         price" of one one-hundredth of a share of Preferred Stock shall be
         equal to the "current market price" of one share of Preferred Stock
         divided by 100.

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

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

                                      -18-
<PAGE>   22
         (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
share of Preferred Stock purchasable from time to time hereunder upon exercise
of the Rights, all subject to further adjustment as provided herein.

         (h) Unless the Company shall have exercised its election as provided
in Section 11(i), upon each adjustment of the Purchase Price as a result of the
calculations made in Sections 11(b) and (c), each Right outstanding immediately
prior to the making of such adjustment shall thereafter evidence the right to
purchase, at the adjusted Purchase Price, that number of one one-hundredths of
a share of Preferred Stock (calculated to the nearest one-millionth) obtained
by (i) multiplying (x) the number of one one-hundredths of a 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 lieu of any adjustment in
the number of one one-hundredths of a share of Preferred Stock purchasable upon
the exercise of a Right. Each of the Rights outstanding after the adjustment in
the number of Rights shall be exercisable for the number of one one-hundredths
of a share of Preferred Stock for which a Right was exercisable immediately
prior to such adjustment. Each Right held of record prior to such adjustment of
the number of Rights shall become that number of Rights (calculated to the
nearest 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 adjustment and, if known at the time, the
amount of the adjustment to be made. This record date may be the date on which
the Purchase Price is adjusted or any day thereafter, but, if the Rights
Certificates have been issued, shall be at least ten (10) days later than the
date of the public announcement. If Rights Certificates have been issued, upon
each adjustment of the number of Rights pursuant to this Section 11(i), the
Company shall, as promptly as practicable, cause to be distributed to holders
of record of Rights Certificates on such record date Rights Certificates
evidencing, subject to Section 14 hereof, the additional Rights to which such
holders shall be entitled as a result of such adjustment, or, at the option of
the Company, shall cause to be distributed to such holders of record in
substitution and replacement for the Rights Certificates held by such holders
prior to the date of adjustment, and upon surrender thereof if required by the
Company, new Rights Certificates evidencing all the Rights to which such
holders shall be entitled after such adjustment. Rights Certificates so to be
distributed shall be issued, executed and countersigned in the manner provided
for herein (and may bear, at the option of the Company, the adjusted Purchase
Price) and shall be registered in the names of the holders of record of Rights
Certificates on the record date specified in the public announcement.

                                      -19-
<PAGE>   23
         (j) Irrespective of any adjustment or change in the Purchase Price or
the number of one one-hundredths of a share of Preferred Stock issuable upon
the exercise of the Rights, the Rights Certificates theretofore and thereafter
issued may continue to express the Purchase Price per one one-hundredth of a
share and the number of one one-hundredths of a share which were expressed in
the initial Rights Certificates issued hereunder.

         (k) Before taking any action that would cause an adjustment reducing
the Purchase Price below the then stated value if any, of the number of one
one-hundredths of a share of Preferred Stock 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 such number of one one-hundredths of a share
of Preferred Stock 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 issuance to the holder of any Right exercised after such record date
the number of one one-hundredths of a share of Preferred Stock and other
capital stock or securities of the Company, if any, issuable upon such exercise
over and above the number of one one-hundredths of a share of Preferred Stock
and other capital stock or securities of the Company, if any, issuable upon
such exercise on the basis of the Purchase Price in effect prior to such
adjustment; provided, however, that the Company shall deliver to such holder a
due bill or other appropriate instrument evidencing such holder's right to
receive such additional shares (fractional or otherwise) or securities upon the
occurrence of the event requiring such adjustment.

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

         (n) The Company covenants and agrees that it shall not, at any time
after the Distribution Date, (i) consolidate with any other Person (other than
a Subsidiary of the Company in a transaction which complies with Section 11(o)
hereof), (ii) merge with or into any other Person (other than a Subsidiary of
the Company in a transaction which complies with Section 11(o) hereof), or
(iii) sell or transfer (or permit any Subsidiary to sell or transfer), in one
transaction or a series of related transactions, assets or earning power
aggregating more than 50% of the assets or earning power of the Company and its
Subsidiaries (taken as a whole) to any 

                                      -20-
<PAGE>   24
other Person or Persons (other than the Company and/or any of its Subsidiaries
in one or more transactions each of which complies with Section 11(o) hereof),
if (x) at the time of or immediately after such consolidation, merger or sale
there are any rights, warrants or other instruments or securities outstanding or
agreements in effect which would substantially diminish or otherwise eliminate
the benefits intended to be afforded by the Rights, or (y) prior to,
simultaneously with or immediately after such consolidation, merger or sale, the
shareholders of the Person who constitutes the "Principal Party" for purposes of
Section 13(a) hereof shall have received a distribution of Rights previously
owned by such Person or any of its Affiliates and Associates.

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

         (p) Anything in this Agreement to the contrary notwithstanding, in the
event that the Company shall at any time after the Rights Declaration Date and
prior to the Distribution Date (i) declare a dividend on the outstanding shares
of Common Stock payable in shares of Common Stock, (ii) subdivide the
outstanding shares of Common Stock, or (iii) combine the outstanding shares of
Common Stock into a smaller number of shares, the number of Rights associated
with each share of Common Stock then outstanding, or issued or delivered
thereafter but prior to the Distribution Date, shall be proportionately
adjusted so that the number of Rights thereafter associated with each share of
Common Stock following any such event shall equal the result obtained by
multiplying the number of Rights associated with each share of Common Stock
immediately prior to such event by a fraction, the numerator of which shall be
the total number of shares of Common Stock outstanding immediately prior to the
occurrence of the event and the denominator of which shall be the total number
of shares of Common Stock outstanding immediately following the occurrence of
such event.

         11A. Exchange of Rights.

         (a) The Board of Directors of the Company may, at its option, at any
time after a Person becomes an Acquiring Person, mandatorily exchange all or
part of the then outstanding and exercisable Rights (which shall not include
Rights that shall have become null and void and nontransferable pursuant to the
provisions of Section 7(e) for consideration per Right consisting of one-half
of the securities that would be issuable at such time upon the exercise of one
Right in accordance with Section 11(a)(ii) or, if applicable, Section
11(a)(iii)(the consideration issuable per Right pursaunt to this Section 11A(a)
being the "Exchange Consideration"). If the Board of Directors elects to
exchange all the Rights for Exchange Consideration pursuant to this Section
11A(a) prior to the physical distribution of the Right Certificates, the
Corporation may distribute the Exchange Consideration in lieu of distributing
Right Certificates, in which case for purposes of this Rights Agreement holders
of Rights shall 

                                      -21-
<PAGE>   25

be deemed to have simultaneously received and surrendered for exchange Right
Certificates on the date of such distribution.

         (b) Any action of the Board of Directors of the Company ordering the
exchange of any Rights pursuant to Section 11A(a) shall be irrevocable and,
immediately upon the taking of such action and without any further action and
without any notice, the right to exercise any such Right pursuant to Section
11(a)(ii) shall terminate and the only right thereafter of a holder of such
Right shall be to receive the Exchange Consideration in exchange for each such
Right held by such holder or, if the Exchange Consideration shall not have been
paid or issued, to exercise any such Right pursuant to Section 13(a). The
Company shall promptly give public notice of any such exchange; provided,
however, that the failure to give, or any defect in, such notice shall not
affect the validity of such exchange. The Company promptly shall mail a notice
of any such exchange to all 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 Rights for the Exchange Consideration 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 shall have become null and void and
nontransferable pursuant to the provisions of Section 7(e)) held by each holder
of Rights.

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

         Whenever an adjustment is made as provided in Section 11 and Section
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 Preferred Stock and the Common Stock, a copy of such certificate,
and (c) mail a brief summary thereof to each holder of a Rights Certificate
(or, if prior to the Distribution Date, to each holder of a certificate
representing shares of Common Stock) in accordance with Section 25 hereof. The
Rights Agent shall be fully protected in relying on any such certificate and on
any adjustment therein contained.

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

         In the event that, following the Stock Acquisition Date, directly or
indirectly, (x) the Company shall consolidate with, or merge with and into, any
other Person (other than a Subsidiary of the Company in a transaction which
complies with Section 11(o) hereof), and the Company shall not be the
continuing or surviving corporation of such consolidation or merger, (y) any
Person (other than a Subsidiary of the Company in a transaction which complies
with Section 11(o) hereof) shall consolidate with, or merge with or into, the
Company, and the Company shall be the continuing or surviving corporation of
such consolidation or merger and, in connection with such consolidation or
merger, all or part of the outstanding shares of Common 

                                      -22-
<PAGE>   26
Stock shall be changed into or exchanged for stock or other securities of any
other Person or cash or any other property, or (z) the Company shall sell or
otherwise transfer (or one or more of its Subsidiaries shall sell or otherwise
transfer), in one transaction or a series of related transactions, assets or
earning power aggregating more than 50% of the assets or earning power of the
Company and its Subsidiaries (taken as a whole) to any Person or Persons (other
than the Company or any Subsidiary of the Company in one or more transactions
each of which complies with Section 11(o) hereof), then, and in each such case,
proper provision shall be made so that: (i) each holder of a Right, except as
provided in Section 7(e) hereof, shall thereafter have the right to receive,
upon the exercise thereof at the then current Purchase Price in accordance with
the terms of this Agreement, such number of validly authorized and issued, fully
paid, nonassessable and freely tradeable shares of Common Stock of the Principal
Party (as such term is hereinafter defined), not subject to any liens,
encumbrances, rights of first refusal or other adverse claims, as shall be equal
to the result obtained by (1) multiplying the then current Purchase Price by the
number of one one-hundredths of a share of Preferred Stock for which a Right is
exercisable immediately prior to the first occurrence of a Section 13 Event (or,
if a Section 11(a)(ii) Event has occurred prior to the first occurrence of a
Section 13 Event, multiplying the number of such one one-hundredths of a share
for which a Right was exercisable immediately prior to the first occurrence of a
Section 11(a)(ii) Event by the Purchase Price in effect immediately prior to
such first occurrence), and (2) dividing that product (which, following the
first occurrence of a Section 13 Event, shall be referred to as the "Purchase
Price" for each Right and for all purposes of this Agreement) by 50% of the
current market price (determined pursuant to Section 11(d)(i) hereof) per share
of the Common Stock of such Principal Party on the date of consummation of such
Section 13 Event; (ii) such Principal Party shall thereafter be liable for, and
shall assume, by virtue of such Section 13 Event, all the obligations and duties
of the Company pursuant to this Agreement; (iii) the term "Company" shall
thereafter be deemed to refer to such Principal Party, it being specifically
intended that the provisions of Section 11 hereof shall apply only to such
Principal Party following the first occurrence of a Section 13 Event; (iv) such
Principal Party shall take such steps (including, but not limited to, the
reservation of a sufficient number of shares of its Common Stock) in connection
with the consummation of any such transaction as may be necessary to assure that
the provisions hereof shall thereafter be applicable, as nearly as reasonably
may be, in relation to its shares of Common Stock thereafter deliverable upon
the exercise of the Rights; and (v) the provisions of Section 11(a)(ii) hereof
shall be of no effect following the first occurrence of any Section 13 Event.

         (a) "Principal Party" shall mean:

            (i) In the case of any transaction described in clause (x) or (y)
         of the first sentence of Section 13(a), the Person that is the issuer
         of any securities into which shares of Common Stock of the Company are
         converted in such merger or consolidation, and if no securities are so
         issued, the Person that is the other party to such merger or
         consolidation; and

                                      -23-
<PAGE>   27
            (ii) In the case of any transaction described in clause (x) or (y)
         of the first section of Section 13(a) the Person that is the party
         receiving the greatest portion of the assets or earning power
         transferred pursuant to such transaction or transactions;

provided, however, that in any such case, (1) if the Common Stock of such
Person is not at such time and has not been continuously over the preceding
twelve (12) month period registered under Section 12 of the Exchange Act, and
such Person is a direct or indirect Subsidiary of another Person the Common
Stock of which is and has been so registered, "Principal Party" shall refer to
such other Person, and (2) in case such Person is a Subsidiary, directly or
indirectly, of more than one Person the Common Stocks of two or more of which
are and have been so registered, "Principal Party" shall refer to whichever of
such Persons is the issuer of the Common Stock having the greatest aggregate
market value.

         (b) The Company shall not consummate any such consolidation, merger,
sale or transfer unless the Principal Party shall have a sufficient number of
authorized shares of its Common Stock which have not been issued or reserved
for issuance to permit the exercise in full of the Rights in accordance with
this Section 13 and unless prior thereto the Company and such Principal Party
shall have executed and delivered to the Rights Agent a supplemental agreement
providing for the terms set forth in paragraphs (a) and (b) of this Section 13
and further providing that, as soon as practicable after the date of any
consolidation, merger or sale of assets mentioned in paragraph (a) of this
Section 13, the Principal Party will:

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

            (ii) deliver to holders of the Rights historical financial
         statements for the Principal Party and each of its Affiliates 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 a Section 13
Event shall occur at any time after the occurrence of a Section 11(a)(ii)
Event, the Rights which have not theretofore been exercised shall thereafter
become exercisable in the manner described in Section 13(a).

         (c) Notwithstanding anything in this Agreement to the contrary, this
Section 13 shall not be applicable to a transaction described in Section 13(x),
(y), or (z), if such transaction is consummated with a Person or Persons who
acquired shares of Common Stock 

                                      -24-
<PAGE>   28
pursuant to a Qualifying Offer. Upon consummation of any such transaction
contemplated by this Section 13(c), all outstanding Rights shall expire.

         14. Fractional Rights and Fractional Shares.

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

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

                                      -25-
<PAGE>   29
         (c) Following the occurrence of a Triggering Event, the Company shall
not be required to issue fractions of shares of Common Stock upon exercise of
the Rights or to distribute certificates which evidence fractional shares of
Common Stock. In lieu of fractional shares of Common Stock, the Company may pay
to the registered holders of Rights Certificates at the time such Rights are
exercised as herein provided an amount in cash equal to the same fraction of
the current market value of one (1) share of Common Stock. For purposes of this
Section 14(c), the current market value of one share of Common Stock shall be
the closing price of one share of Common Stock (as determined pursuant to
Section 11(d)(i) hereof) for the Trading Day immediately prior to the date of
such exercise.

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

         15. Rights of Action.

         All rights of action in respect of this Agreement are vested in the
respective registered holders of the Rights Certificates (and, prior to the
Distribution Date, the registered holders of the Common Stock); and any
registered holder of any Rights Certificate (or, prior to the Distribution
Date, of the Common Stock), without the consent of the Rights Agent or of the
holder of any other Rights Certificate (or, prior to the Distribution Date, of
the Common Stock), may, in his own behalf and for his own benefit, enforce, and
may institute and maintain any suit, action or proceeding against the Company
to enforce, or otherwise act in respect of, his right to exercise the Rights
evidenced by such Rights Certificate in the manner provided in such Rights
Certificate and in this Agreement. Without limiting the foregoing or any
remedies available to the holders of Rights, it is specifically acknowledged
that the holders of Rights would not have an adequate remedy at law for any
breach of this Agreement and shall be entitled to specific performance of the
obligations hereunder and injunctive relief against actual or threatened
violations of the obligations hereunder of any Person subject to this
Agreement.

         16. Agreement of Rights Holders.

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

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

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

                                      -26-
<PAGE>   30
         (c) subject to Section 6(a) and Section 7(f) hereof, the Company and
the Rights Agent may deem and treat the Person in whose name a Rights
Certificate (or, prior to the Distribution Date, the associated Common Stock
certificate) is registered as the absolute owner thereof and of the Rights
evidenced thereby (notwithstanding any notations of ownership or writing on the
Rights Certificates or the associated Common Stock certificate made by anyone
other than the Company or the Rights Agent) for all purposes whatsoever, and
neither the Company nor the Rights Agent, subject to the last sentence of
Section 7(e) hereof, shall be required to 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 agency or
commission, or any statute, rule, regulation or executive order promulgated or
enacted by any governmental authority, prohibiting or otherwise restraining
performance of such obligation; provided, however, the Company must use its
best efforts to have any such order, decree or ruling lifted or otherwise
overturned as soon as possible.

            17. Rights Certificate Holder Not Deemed a Stockholder.

         No holder, as such, of any Rights Certificate shall be entitled to
vote, receive dividends or be deemed for any purpose the holder of the number
of one one-hundredths of a share of Preferred Stock 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 Rights
Certificate be construed to confer upon the holder of any Rights Certificate,
as such, any of the rights of a stockholder of the Company or any right to vote
for the election of directors or upon any matter submitted to stockholders at
any meeting thereof, or to give or withhold consent to any corporate action, or
to receive notice of meetings or other actions affecting stockholders (except
as provided in Section 24 hereof), or to receive dividends or subscription
rights, or otherwise, until the Right or Rights evidenced by such Rights
Certificate shall have been exercised in accordance with the provisions hereof.

         18. Concerning the Rights Agent.

         (a) The Company agrees to pay to the Rights Agent reasonable
compensation for all services rendered by it hereunder and, from time to time,
on demand of the Rights Agent, its reasonable expenses and counsel fees and
disbursements and other 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 

                                      -27-
<PAGE>   31
connection with the acceptance and administration of this Agreement, including
the costs and expenses of defending against any claim of liability in the
premises.

         (b) The Rights Agent shall be protected and shall incur no liability
for or in respect of any action taken, suffered or omitted by it in connection
with its administration of this Agreement in reliance upon any Rights
Certificate or certificate for Common 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.

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

         (a) Any corporation into which the Rights Agent or any successor
Rights Agent may be merged or with which it may be consolidated, or any
corporation resulting from any merger or consolidation to which the Rights
Agent or any successor Rights Agent shall be a party, or any corporation
succeeding to the corporate trust business or stock transfer business of the
Rights Agent or any successor Rights Agent, shall be the successor to the
Rights Agent under this Agreement without the execution or filing of any paper
or any further act on the part of any of the parties hereto; provided, however,
that such 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 Rights Certificates shall have been countersigned but not delivered,
any such successor Rights Agent may adopt the countersignature of a predecessor
Rights Agent and deliver such Rights Certificates so countersigned; and in case
at that time any of the Rights Certificates shall not have been countersigned,
any successor Rights Agent may countersign such Rights Certificates either in
the name of the predecessor or in the name of the successor Rights Agent; and
in all such cases such Rights Certificates shall have the full force provided
in the Rights Certificates and in this Agreement.

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

                                      -28-
<PAGE>   32
         20. Duties of Rights Agent.

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

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

         (b) Whenever in the performance of its duties under this Agreement the
Rights Agent shall deem it necessary or desirable that any fact or matter
(including, without limitation, the identity of any Acquiring Person and the
determination of "current market price") be proved or established by the
Company prior to taking or suffering any action hereunder, such fact or matter
(unless other evidence in respect thereof be herein specifically prescribed)
may be deemed to be conclusively proved and established by a certificate signed
by the Chairman of the Board, the President, any Vice President, the Treasurer
or the 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 Rights
Certificates or be required to verity the same (except as to its
countersignature on such Rights Certificates), but all such statements and
recitals are and shall be deemed to have been made by the Company only.

         (e) The Rights Agent shall not be under any responsibility in respect
of the validity of this Agreement or the execution and delivery hereof (except
the due execution hereof by the Rights Agent) or in respect of the validity or
execution of any Rights Certificate (except its countersignature thereof); nor
shall it be responsible for any breach by the Company of any covenant or
condition contained in this Agreement or in any Rights Certificate; nor shall
it be responsible for any adjustment required under the provisions of Section
11 or Section 13 hereof or responsible for the manner, method or amount of any
such adjustment or the ascertaining of the existence of facts that would
require any such adjustment (except with respect to the exercise of Rights
evidenced by Rights Certificates after 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 shares of Common Stock
or Preferred Stock to be issued pursuant to this Agreement or any Rights
Certificate or as to whether any shares of Common Stock or Preferred Stock
will, when so issued, be validly authorized and issued, fully paid and
nonassessable.

                                      -29-
<PAGE>   33
         (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, any Vice President, 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 in any
transaction in which the Company may be interested, or contract with or lend
money to the Company, or otherwise act as fully and freely as though it were
not Rights Agent under this Agreement. Nothing herein shall preclude the Rights
Agent from acting in any other capacity for the Company or for any other 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, however, reasonable care was
exercised in the selection and continued employment thereof.

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

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

         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 thirty (30) days' notice
in writing mailed to the Company, and to each transfer agent of the Common
Stock and Preferred Stock, by registered or 

                                      -30-
<PAGE>   34

certified mail, and to the holders of the Rights Certificates by first-class
mail. The Company may remove the Rights Agent or any successor Rights Agent upon
thirty (30) days' notice in writing, mailed to the Rights Agent or successor
Rights Agent, as the case may be, and to each transfer agent of the Common Stock
and Preferred Stock, by registered or certified mail, and to the holders of the
Rights Certificates by first-class mail. If the Rights Agent shall resign or be
removed or shall otherwise become incapable of acting, the Company shall appoint
a successor to the Rights Agent.  If the Company shall fail to make such
appointment within a period of thirty (30) days after giving notice of such
removal or after it has been notified in writing of such resignation or
incapacity by the resigning or incapacitated Rights Agent or by the holder of a
Rights Certificate (who shall, with such notice, submit his Rights Certificate
for inspection by the Company), then any registered holder of any Rights
Certificate may apply to any court of competent jurisdiction for the appointment
of a new Rights Agent. Any successor Rights Agent, whether appointed by the
Company or by such a court, shall be (a) a corporation organized and doing
business under the laws of the United States or of the State of New York (or of
any other state of the United States so long as such corporation is authorized
to do business as a banking institution in the State of New York), in good
standing, having a principal office in the State of New York, which is
authorized under such laws to exercise corporate trust or stock transfer 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 $100,000,000 or (b) an Affiliate controlled by a corporation
described in clause (a). After appointment, the successor Rights Agent shall be
vested with the same powers, rights, duties and responsibilities as if it had
been originally named as Rights Agent without further act or deed; but the
predecessor Rights Agent shall deliver and transfer to the successor Rights
Agent any property at the time held by it hereunder, and execute and deliver any
further assurance, conveyance, act or deed necessary for the purpose. Not later
than the effective date of any such appointment, the Company shall file notice
thereof in writing with the predecessor Rights Agent and each transfer agent of
the Common Stock and the Preferred Stock, and mail a notice thereof in writing
to the registered holders of the Rights Certificates.  Failure to give any
notice provided for in this Section 21, however, or any defect therein, shall
not affect the legality or validity of the resignation or removal of the Rights
Agent or the appointment of the successor Rights Agent, as the case may be.

         22. Issuance of New Rights Certificates.

         Notwithstanding any of the provisions of this Agreement or of the
Rights to the contrary, the Company may, at its option, issue new Rights
Certificates evidencing Rights in such form as may be approved by its Board of
Directors to reflect any adjustment or change in the Purchase Price and the
number or kind or class of shares or other securities or property purchasable
under the Rights Certificates made in accordance with the provisions of this
Agreement. In addition, in connection with the issuance or sale of shares of
Common Stock following the Distribution Date and prior to the redemption or
expiration of the Rights, the Company (a) shall, with respect to shares of
Common Stock so issued or sold pursuant to the 

                                      -31-
<PAGE>   35
exercise of stock options or under any employee plan or arrangement, or upon the
exercise, conversion or exchange of securities hereinafter issued by the
Company, and (b) may, in any other case, if deemed necessary or appropriate by
the Board of Directors of the Company, issue Rights Certificates representing
the appropriate number of Rights Certificates representing the appropriate
number of Rights in connection with such issuance or sale; provided, however,
that (i) no such Rights Certificate shall be issued if, and to the extent that,
the Company shall be advised by counsel that such issuance would create a
significant risk of material adverse tax consequences to the Company or the
person to whom such Rights Certificate would be issued, and (ii) no such Rights
Certificate shall be issued if, and to the extent that, appropriate adjustment
shall otherwise have been made in lieu of the issuance thereof.

         23. Redemption and Termination.

         (a) The Board of Directors of the Company may, at its option, at any
time prior to 5:00 P.M., New York City time, on the earlier of (i) the close of
business on the tenth day following the Stock Acquisition Date (or, if the
Stock Acquisition Date shall have occurred prior to the Record Date, the close
of business on the tenth day following the Record Date) or (ii) the Final
Expiration Date, redeem all but not less than all of the then outstanding
Rights at a redemption price of $.01 per Right, as such amount may be
appropriately adjusted to reflect any stock split, stock dividend or similar
transaction occurring after the date hereof (such redemption price being
hereinafter referred to as the "Redemption Price"); provided, however, if the
Board of Directors of the Company authorizes redemption of the Rights in either
of the circumstances set forth in clauses (i) and (ii) below, then there must
be Disinterested Directors then in office and such authorization shall require
the concurrence of a majority of such Disinterested Directors: (i) such
authorization occurs on or after the time a Person becomes an Acquiring Person,
or (ii) such authorization occurs on or after the date of a change (resulting
from a proxy or consent solicitation) in a majority of the directors in office
at the commencement of such solicitation if any Person who is a participant in
such solicitation has stated (or, if upon the commencement of such
solicitation, a majority of the Board of Directors of the Company has
determined in good faith) that such Person (or any of its Affiliates or
Associates) intends to take, or may consider taking, any action which would
result in such Person becoming an Acquiring Person or which would cause the
occurrence of a Triggering Event, unless, concurrent with such solicitation,
such Person (or one or more of its Affiliates or Associates) is making a cash
tender offer pursuant to a Schedule 14D-1 (or any successor form) filed with
the Securities and Exchange Commission for all outstanding shares of Common
Stock not beneficially owned by such Person (or by its Affiliates or
Associates); provided further, however, that if, following the occurrence of a
Stock Acquisition Date and following the expiration of the right of redemption
hereunder but prior to any Triggering Event, (i) a Person who is an Acquiring
Person shall have transferred or otherwise disposed of a number of shares of
Common Stock in one transaction, or series of transactions, not directly or
indirectly involving the Company or any of its Subsidiaries, which did not
result in the occurrence of a Triggering Event such that such Person is not
thereafter a Beneficial Owner of shares of Voting Stock representing more than
10% of the Voting Power, 

                                      -32-
<PAGE>   36
and (ii) there are no other Persons, immediately following the occurrence of the
event described in clause (i), who are Acquiring Persons, then the right of
redemption shall be reinstated and thereafter be subject to the provisions of
this Section 23.  Notwithstanding anything contained in this Agreement to the
contrary, the Rights shall not be exercisable after the first occurrence of a
Section 11(a)(ii) Event until such time as the Company's right of redemption
hereunder has expired.

         (b) Immediately upon the action of the Board of Directors of the
Company ordering the redemption of the Rights, evidence of which shall have
been filed with the Rights Agent and without any further action and without any
notice, the right to exercise the Rights will terminate and the only right
thereafter of the holders of Rights shall be to receive the Redemption Price
for each Right so held. Promptly 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 each holder's last address as it
appears upon the registry books of the Rights Agent or, prior to the
Distribution Date, on the registry books of the 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.

         24. Notice of Certain Events.

         (a) In case the Company shall propose, at any time after the
Distribution Date, (i) to pay any dividend payable in stock of any class to the
holders of Preferred Stock or to make any other distribution to the holders of
Preferred Stock (other than a regular quarterly cash dividend out of earnings
or retained earnings of the Company), or (ii) to offer to the holders of
Preferred Stock rights or warrants to subscribe for or to purchase any
additional shares of Preferred Stock or shares of stock of any class or any
other securities, rights or options, or (iii) to effect any reclassification of
its Preferred Stock (other than a reclassification involving only the
subdivision of outstanding shares of Preferred Stock), or (iv) to effect any
consolidation or merger into or with any other Person (other than a Subsidiary
of the Company in a transaction which complies with Section 11(o) hereof), or
to effect any sale or other transfer (or to permit one or more of its
Subsidiaries to effect any sale or other transfer), in one transaction or a
series of related transactions, of more than 50% of the assets or earning power
of the Company and its Subsidiaries (taken as a whole) to any other Person or
Persons (other than the Company and/or any of its Subsidiaries in one or more
transactions each of which complies with Section 11(o) hereof), or (v) to
effect the liquidation, dissolution or winding up of the Company, then, in each
such case, the Company shall give to each holder of a Rights Certificate, to
the extent feasible and 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 warrants, or the date on which such
reclassification, consolidation, merger, sale, transfer, liquidation,
dissolution or winding up is to take place and the date of participation
therein by the holders of the shares of 

                                      -33-
<PAGE>   37
Preferred Stock, if any such date is to be fixed, and such notice shall be so
given in the case of any action covered by clause (i) or (ii) above at least
twenty (20) days prior to the record date for determining holders of the shares
of Preferred Stock for purposes of such action and, in the case of any such
other action, at least twenty (20) days prior to the date of the taking of such
proposed action or the date of participation therein by the holders of the
shares of Preferred Stock, whichever shall be the earlier.

         (b) In case any Section 11(a)(ii) Event shall occur, then, in any such
case, (i) the Company shall as soon as practicable thereafter give to each
holder of a Rights Certificate, to the extent feasible and in accordance with
Section 25 hereof, a notice of the occurrence of such event, which shall
specify the event and the consequences of the event to holders of Rights under
Section 11(a)(ii) hereof, and (ii) all references in the preceding paragraph to
Preferred Stock shall be deemed thereafter to refer to Common Stock and/or, if
appropriate, other securities.

         25. Notices.

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

                  Dominion Bridge Corporation
                  500, Rue Notre Dame
                  Lachine, Quebec, Canada H8S2B2
                  Attn:  Chief Executive Officer

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

                  Continental Stock Transfer & Trust Company
                  2 Broadway
                  New York, NY  10004
                  Attention: Corporate Compliance

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

                                      -34-
<PAGE>   38
         26. Supplements and Amendments.

         Prior to the Distribution Date and subject to the penultimate sentence
of this Section 26, the Company may, and the Rights Agent shall if the Company
so directs, supplement or amend any provision of this Agreement without the
approval of any holders of certificates representing shares of Common Stock.
From and after the Distribution Date, and subject to the penultimate sentence
of this Section 26, the Company may, and the Rights Agent shall if the Company
so directs, supplement or amend this Agreement without the approval of any
holders of Rights Certificates in order (i) to cure any ambiguity, (ii) to
correct or supplement any provision contained herein which may be defective or
inconsistent with any other provisions herein, (iii) to change or supplement
the provisions hereunder in any manner which the Company may deem necessary or
desirable and which shall not adversely affect the interests of the holders of
Rights Certificates (other than an Acquiring Person or an Affiliate or
Associate of an Acquiring Person), (iv) to suspend the effectiveness of Section
7(e) hereof (which suspension, following the first occurrence of an event set
forth in clauses (i) and (ii) of the first proviso to Section 23(a) hereof,
shall be effective only if there are Disinterested Directors and shall require
the concurrence of a majority of such Disinterested Directors), or (v) to
shorten or lengthen any time period hereunder (which lengthening or shortening,
following the first occurrence of an event set forth in clauses (i) and (ii) of
the first proviso to Section 23(a) hereof, shall be effective only if there are
Disinterested Directors and shall require the concurrence of a majority of such
Disinterested Directors); provided, this Agreement may not be supplemented or
amended to lengthen, pursuant to clause (v) of this sentence, (A) a time period
relating to when the Rights may be redeemed at such time as the Rights are not
then redeemable or (B) any other time period unless such lengthening is for the
purpose of protecting, enhancing or clarifying the rights of, and/or the
benefits to, the holders of Rights. Upon the delivery of a certificate from an
appropriate officer of the Company which states that the proposed supplement or
amendment is in compliance with the terms of this Section 26, the Rights Agent
shall execute such supplement or amendment. Notwithstanding anything contained
in this Agreement to the contrary, no supplement or amendment shall be made
which (i) changes the Redemption Price, the Purchase Price or the number of one
one-hundredths of a share of Preferred Stock for which a Right is exercisable
or (ii) shortens the Final Expiration Date. Prior to the Distribution Date, the
interests of the holders of Rights shall be deemed coincident with the
interests of the holders of Common Stock.

         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.

                                      -35-
<PAGE>   39
         28. Determinations and Actions by the Board of Directors, etc.

         For all purposes of this Agreement, any calculation of the number of
shares of Common Stock or of any other class of capital stock outstanding at
any particular time, including for purposes of determining the particular
percentage of outstanding shares of Common Stock or of Voting Power of which
any Person is the Beneficial Owner, shall be made in accordance with the last
sentence of Rule 13d-3(d)(1)(i) of the General Rules and Regulations under the
Exchange Act. The Board of Directors of the Company (with, where specifically
provided for herein, the concurrence of the Disinterested Directors) shall have
the exclusive power and authority to administer this Agreement and to exercise
all rights and powers specifically granted to the Board (with, where
specifically provided for herein, the concurrence of the Disinterested
Directors) or to the Company, or as may be necessary or advisable in the
administration of this Agreement, including, without limitation, the right and
power to (i) interpret the provisions of this Agreement, and (ii) make all
determinations deemed necessary or advisable for the administration of this
Agreement (including a determination to redeem or not redeem the Rights or to
amend the Agreement and a determination as to what constitutes a Qualifying
Offer). All such actions, calculations, interpretations and determinations
(including, for purposes of clause (y) below, all omissions with respect to the
foregoing) which are done or made by the Board (with, where specifically
provided for herein, the concurrence of the Disinterested Directors) in good
faith, shall (x) be final, conclusive and binding on the Company, the Rights
Agent, the holders of the Rights and all other parties, and (y) not subject the
Board or the Disinterested Directors to any liability to the holders of the
Rights.

         (a) Nothing contained in this Rights Agreement shall be deemed to be
in derogation of the obligation of the Board of Directors of the Company to
exercise its fiduciary duty. Without limiting the foregoing, nothing contained
herein shall be construed to suggest or imply that the Board of Directors shall
not be entitled to recommend that holders of Common Shares reject any
Qualifying Offer or any other tender offer, or to take any other action
(including, without limitation, the commencement, prosecution, defense or
settlement of any litigation and the submission of additional or alternative
offers or other proposals) with respect to any Qualifying Offer or any other
tender offer that the Board of Directors believes it necessary or appropriate
in the exercise of such fiduciary duty.

         29. Benefits of this Agreement.

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

                                      -36-
<PAGE>   40
         30. Severability.

         If any term, provision, covenant or restriction of this Agreement is
held by a court of competent jurisdiction or other authority to be invalid,
void or unenforceable, the remainder of the terms, provisions, covenants and
restrictions of this Agreement shall remain in full force and effect and shall
in no way be affected, impaired or invalidated; provided, however, that
notwithstanding anything in this Agreement to the contrary, if any such term,
provision, covenant or restriction is held by such court or authority to be
invalid, void or unenforceable and the Board of Directors of the Company
determines in its good faith judgment that severing the invalid language from
this Agreement would adversely affect the purpose or effect of this Agreement,
the right of redemption set forth in Section 23 hereof shall be reinstated and
shall not expire until the close of business on the tenth day following the
date of such determination by the Board of Directors.

         31. Governing Law.

         This Agreement, each Right and each Rights Certificate issued
hereunder shall be deemed to be a contract made under the laws of the State of
Delaware and for all purposes shall be governed by and construed in accordance
with the laws of such Commonwealth applicable to contracts made and to be
performed entirely within such Commonwealth except for Sections 18, 19, 20 and
21 hereof, which for all purposes shall be governed by and construed in
accordance with the laws of the State of New York.

         32. 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.

         33. 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.


                                      -37-
<PAGE>   41



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

Attest:                                     DOMINION BRIDGE CORPORATION

By /s/ OLIVER DESPRES                      By /s/ NICOLAS MATOSSIAN
   ------------------                         ---------------------
Name:  Oliver Despres                         Name:  Nicolas Matossian
Title: Vice President                         Title: President
       General Counsel
       and Secretary                                

Attest:                                     CONTINENTAL STOCK TRANSFER & TRUST
                                            COMPANY

By  /s/ THOMAS JENNINGS                        By /s/ ROGER BURNHAMMER
    -------------------                           --------------------
  Name:  Thomas Jennings                        Name:  Roger Burnhammer 
  Title: Assistant Secretary                    Title: Vice President


                                      -38-
<PAGE>   42
                                                                     EXHIBIT A

         Terms of the Series One Preferred Stock as Adopted by the Board of
         Directors

         RESOLVED that pursuant to the authority conferred upon the Board of
         Directors by the Certificate of Incorporation of the Company, there
         is hereby established a series of the Preferred Stock of the
         Corporation to consist initially of 1,000,000 shares with the
         designation and relative rights and preferences thereof to be as
         follows:

1. Designation. The shares of such series shall be designated as "Series One
Preferred Stock." Shares of this series shall be issued pursuant to the
exercise of rights to purchase Series One Preferred Stock distributed to the
holders of the Company's Common Stock (the "Common Stock").

2. Dividends and Distributions. Subject to the rights and preferences of the
holders of any shares of any series of Preferred Stock ranking senior as to
dividends to this Series One Preferred Stock, the holders of shares of Series
One Preferred Stock, in preference to the holders of Common Stock and shares of
stock ranking junior as to dividends to the Series One Preferred Stock, shall
be entitled to receive, when and if declared by the Board of Directors out of
funds legally available for the purpose, quarterly dividends payable in cash on
the 15th 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 One Preferred Stock, in an
amount per share (rounded to the nearest cent) equal to, subject to the
provision for adjustment hereinafter set forth, 100 times the aggregate per
share amount of all cash dividends plus 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), paid
on the Common Stock at any time during the quarter year immediately preceding
the quarter year ending on the day immediately preceding such Quarterly
Dividend Payment Date. In the event the Corporation shall at any time after
November 26, 1996 (the "Rights Declaration Date") during any quarter year
immediately preceding the quarter year ending on the day immediately preceding
a Quarterly Dividend Payment Date (i) declare any dividend on Common Stock
payable in shares of Common Stock, or (ii) subdivide the outstanding Common
Stock or combine the outstanding Common Stock into a greater or lesser number
of shares of Common Stock, then in each such case the amounts to which holders
of shares of Series One Preferred Stock were entitled immediately prior to such
event shall be adjusted by multiplying each 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.

<PAGE>   43
         Dividends shall begin to accrue and be cumulative on outstanding
shares of Series One Preferred Stock from the Quarterly Dividend Payment Date
next preceding the date of issue of such shares of Series One Preferred Stock,
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 One
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 of Series One Preferred Stock in an amount less than the total amount of
such dividends at the time accrued and payable on such shares shall be
allocated pro rata on a share-by-share basis among all such shares at the time
outstanding. The Board of Directors may fix a record date for the determination
of holders of shares of Series One Preferred Stock entitled to receive payment
of a dividend or distribution declared thereon, which record date shall be no
more than 30 days prior to the date fixed for the payment thereof.

3. Voting Rights. Except as otherwise provided by law, holders of shares of
Series One Preferred Stock shall have no voting rights.

4. Certain Restrictions.

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

                  (i) declare or pay dividends on, make any distributions on,
or redeem or purchase or otherwise acquire for consideration any shares of
stock ranking junior (either as to dividends or as to assets) to the Series One
Preferred Stock;

                  (ii) declare or pay dividends on or make any other
distributions on any shares of stock ranking on a parity (either as to
dividends or as to assets) with the Series One Preferred Stock, except
dividends paid ratably on the Series One 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 as
to assets) to the Series One Preferred Stock, provided that the Company may at
any time redeem, purchase or otherwise acquire shares of any such junior stock
in exchange for shares of any stock of the Company ranking junior (either as to
dividends or as to assets) to the Series One Preferred Stock; or

                  (iv) purchase or otherwise acquire for consideration any
shares of Series One Preferred Stock, or any shares of stock ranking on a
parity (either as to dividends or upon 

                                      -2-
<PAGE>   44

liquidation, dissolution or winding up) with the Series One 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 Company shall not permit any subsidiary of the Company to
purchase or otherwise acquire for consideration any shares of stock of the
Company unless the Company could, under Paragraph (A) of this Section 4,
purchase or otherwise acquire such shares at such time and in such manner.

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

6. Liquidation, Dissolution or Winding Up. Subject to the rights and
preferences of the holders of any shares of any series of Preferred Stock
ranking senior as to assets to this Series One Preferred Stock, upon any
involuntary or voluntary liquidation, dissolution or winding up of the Company,
no distribution shall be made to the holders of shares of stock ranking junior
(either as to dividends or as to assets) to the Series One Preferred Stock
unless, prior thereto, the holders of shares of Series One Preferred Stock
shall have received an amount per share equal to the Per Share Series One
Liquidation Preference. The Per Share Series One Liquidation Preference shall
be equal to the sum of (x) $100.00 plus an amount equal to accrued and unpaid
dividends and distributions thereon, whether or not declared, to the date of
such payment, plus (y) the Participation Preference. The "Participation
Preference" is an amount per each share of Series One Preferred Stock
outstanding equal to the product of (A) the Excess Distribution Amount, as
hereinafter defined, times (B) a fraction whose numerator is 100 and whose
denominator is the sum of (i) the product of 100 times the number of
outstanding shares of Series One Preferred Stock, plus (ii) the product of 100
times a fraction whose numerator is the number of outstanding shares of Common
Stock and whose denominator is the Adjustment Number; provided, however, if the
foregoing computation results in a negative number, then the Participation
Preference shall be 0. Following the payment of the full amount of the Series
One Liquidation Preference, holders of shares of Common Stock shall receive the
remaining assets to be distributed.

         The "Excess Distribution Amount" is an amount equal to the amount
available for distribution to shareholders of the Company after payment of all
debts and liabilities less the sum of (i) the liquidation preferences in
respect of all shares of Preferred Stock of the Company other than the Series
One Preferred Stock, (ii) the product of 100 times the number of outstanding

                                      -3-
<PAGE>   45
shares of Series One Preferred Stock, and (iii) the product of the number of
outstanding shares of Common Stock times a fraction whose numerator is 100 and
whose denominator is the Adjustment Number.

         (A) The Adjustment Number shall initially be 100 and shall be subject
to adjustment as provided in this subsection (B). In the event the Company
shall at any time after the Rights Declaration Date (i) declare any dividend on
Common Stock payable in shares of Common Stock, (ii) subdivide the outstanding
Common Stock, or (iii) combine the outstanding Common Stock into a smaller
number of shares, then in each such case the Adjustment Number in effect
immediately prior to such event shall be adjusted by multiplying such
Adjustment Number by a fraction, the numerator of which is the number of shares
of Common Stock outstanding immediately after such event and the denominator of
which is the number of shares of Common Stock that were outstanding immediately
prior to such event.

7. Consolidation, Merger, etc. In case the Corporation shall enter into any
consolidation, merger, combination or other transaction in which the shares of
Common Stock are exchanged for or changed into other stock or securities, cash
and/or any other property, then in any such case the shares of Series One
Preferred Stock shall at the same time be similarly exchanged or changed in 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
Company shall at any time (i) declare any dividend on Common Stock payable in
shares of Common Stock, or (ii) subdivide the outstanding Common Stock or
combine the outstanding 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 One
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.

8. Redemption. The outstanding shares of Series One Preferred Stock may be
redeemed at the option of the Board of Directors as a whole, but not in part,
at any time or from time to time, at a cash price per share equal to (i) the
product of the Adjustment Number times the Average Market Value, as such term
is hereinafter defined, of the Common Stock, plus (ii) all dividends which on
the redemption date have accrued on the shares to be redeemed and have not been
paid or declared and a sum sufficient for the payment thereof set apart,
without interest; provided, however, that if and whenever any quarter-yearly
dividend shall have accrued on the Series One Preferred Stock which has not
been paid or declared and a sum sufficient for the payment thereof set apart,
the Company may not purchase or otherwise acquire any shares of Series One
Preferred Stock unless all shares of such stock at the time outstanding are so
purchased or otherwise acquired. The "Average Market Value" is the average of
the closing sale prices of the Common Stock during the 30-day period
immediately preceding the date before the redemption date on the Composite Tape
for New York Stock Exchange-Listed Stocks, or, if such stock is not quoted on

                                      -4-
<PAGE>   46
the Composite Tape, on the New York Stock Exchange, or, if such stock is not
listed on such Exchange, on the principal United States securities exchange
registered under the Securities Exchange Act of 1934, as amended, on which such
stock is listed, or, if such stock is not listed on any such exchange, the
average of the closing bid quotations with respect to a share of Common Stock
during such 30-day period on the National Association of Securities Dealers,
Inc. Automated Quotations System or any system then in use, or, if no such
quotations are available, the fair market value of the Common Stock as
determined by the Board of Directors in good faith.

9. Fractional Shares. Series One Preferred Stock may be issued in fractions of
a share which shall entitle the holder, in proportion to such holder's
fractional shares, to exercise voting rights, if applicable, receive dividends,
participate in distributions and to have the benefit of all other rights of
holders of Series One Preferred Stock.

The foregoing resolution was duly adopted at a meeting of the Board of
Directors of the Company duly called and held on November 26, 1996 at which
meeting a quorum was present and acting throughout.


                                      -5-
<PAGE>   47

                                                                       EXHIBIT B

                           Form of Rights Certificate

Certificate No. R-                                     ________________ Rights

NOT EXERCISABLE AFTER November 26, 2006 OR EARLIER IF REDEEMED BY THE COMPANY.
THE RIGHTS ARE SUBJECT TO REDEMPTION, AT THE OPTION OF THE COMPANY, AT $.01 PER
RIGHT ON THE TERMS SET FORTH IN THE RIGHTS AGREEMENT. UNDER CERTAIN
CIRCUMSTANCES, RIGHTS BENEFICIALLY OWNED BY AN ACQUIRING PERSON (AS SUCH TERM
IS DEFINED IN THE RIGHTS AGREEMENT) AND ANY SUBSEQUENT HOLDER OF SUCH RIGHTS
MAY BECOME NULL AND VOID. [THE RIGHTS REPRESENTED BY THIS RIGHTS CERTIFICATE
ARE OR WERE BENEFICIALLY OWNED BY A PERSON WHO WAS OR BECAME AN ACQUIRING
PERSON OR AN AFFILIATE OR ASSOCIATE OF AN ACQUIRING PERSON (AS SUCH TERMS ARE
DEFINED IN THE RIGHTS AGREEMENT). ACCORDINGLY, THIS RIGHTS CERTIFICATE AND THE
RIGHTS REPRESENTED HEREBY MAY BECOME NULL AND VOID IN THE CIRCUMSTANCES
SPECIFIED IN SECTION 7(e) OF SUCH AGREEMENT.]*

                               Rights Certificate

                          DOMINION BRIDGE CORPORATION

         This certifies that _______________________, or registered assigns, is
the registered owner of the number of Rights set forth above, each of which
entitles the owner thereof, subject to the terms, provisions and conditions of
the Rights Agreement, dated as of November 26 (the "Rights Agreement"), between
Dominion Bridge Corporation, a Delaware corporation (the "Company"), and
Continental Stock Transfer & Trust Company (the "Rights Agent"), to purchase
from the Company at any time prior to 5:00 PM (New York City time) on November
25, 2006 at the office or offices of the Rights Agent designated for such
purpose, or its successors as Rights Agent, one one-hundredth of a fully paid,
non-assessable share of Series One Preferred Stock (the "Preferred Stock") of
the Company, at a purchase price of $_______ per one one-hundredth of a share
(the "Purchase Price"), upon presentation and surrender of this Rights
Certificate with the Form of Election to Purchase and related Certificate duly
executed. The Purchase Price shall be paid in cash or, if the Company shall in
its sole discretion so consent, in shares of Common Stock of the Company having
an equivalent value. The number of Rights evidenced by this Rights Certificate
(and the number of shares which may be purchased upon exercise thereof) set
forth above, and the Purchase Price per share set forth above, are the number
and Purchase Price as of November 26, 1996, based on the Preferred Stock as
constituted at such date.

__________________
  The portion of the legend in brackets shall be inserted only if applicable
  and shall replace the preceding sentence.
<PAGE>   48

         Upon the occurrence of a Section 11(a)(ii) Event (as such term is
defined in the Rights Agreement), if the Rights evidenced by this Rights
Certificate are beneficially owned by (i) an Acquiring Person or an Affiliate
or Associate of any such Acquiring Person (as such terms are defined in the
Rights Agreement), (ii) a transferee of any such Acquiring Person, Associate or
Affiliate, or (iii) under certain circumstances specified in the Rights
Agreement, a transferee of a person who, after such transfer, became an
Acquiring Person or an Affiliate or Associate of an Acquiring Person, such
Rights shall become null and void, and no holder hereof shall have any right
with respect to such Rights from and after the occurrence of such Section
11(a)(ii) Event.

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

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

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

         Subject to the provisions of the Rights Agreement, the Rights
evidenced by this Certificate may be redeemed by the Company at its option at a
redemption price of $.01 per Right at any time prior to the earlier of the
close of business on (i) the tenth day following the Stock Acquisition Date (as
such number of days may be extended), and (ii) the Final Expiration Date. Under
certain circumstances set forth in the Rights Agreement, the decision to redeem
shall require the concurrence of a majority of the Disinterested Directors.
Thereafter, the Company's right of redemption may be reinstated if an Acquiring
Person reduces his beneficial ownership to shares of Voting Stock representing
10% or less of the Voting Power in a transaction or series of transactions not
involving the Company.

         No fractional shares of Preferred Stock will be issued upon the
exercise of any Right or Rights evidenced hereby (other than fractions which
are integral multiples of one one-hundredth of a share of Preferred Stock,
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.

                                      -2-
<PAGE>   49
         No holder of this Rights Certificate shall be entitled to vote or
receive dividends or be deemed for any purpose the holder of shares of
Preferred Stock or of any other securities of the Company 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 Rights
Certificate shall have been exercised as provided in the Rights Agreement.

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

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

Dated as of __________________________

ATTEST:                                   Dominion Bridge Corporation

________________________________          By_________________________________
Title: _________________________          Title: ____________________________

Countersigned:

Continental Stock Transfer & Trust Company

By____________________________________
Authorized Officer


<PAGE>   50


                          FORM OF ELECTION TO PURCHASE

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

To:  DOMINION BRIDGE CORPORATION

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

         Please insert social security or other identifying number

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

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

         Please insert social security or other identifying number

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

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

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

Dated: , ____________________,_____

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

Signature Guaranteed:

                                  Certificate

The undersigned hereby certifies by checking the appropriate boxes that:

         (1) the Rights evidenced by this Rights Certificate [  ] are [  ] are
not being exercised by or on behalf of a Person who is or was an Acquiring
Person or an Affiliate or Associate of any such Acquiring Person (as such terms
are defined pursuant to the Rights Agreement);
<PAGE>   51
         (2) after due inquiry and to the best knowledge of the undersigned, it
[  ] did [  ] did not acquire the Rights evidenced by this Rights Certificate
from any Person who is, was or became an Acquiring Person or an Affiliate or
Associate of an Acquiring Person.

Dated: , _____________, _________

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

Signature Guaranteed:

                                     NOTICE

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


<PAGE>   52

                  [Form of Reverse Side of Rights Certificate]

                               FORM OF ASSIGNMENT

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

FOR VALUE RECEIVED_______________________________________________________

hereby sells, assigns and transfers unto ______________________________________

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

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

this Rights Certificate, together with all right, title and interest therein,
and does hereby irrevocably

constitute and appoint ________________________ Attorney, to transfer the
within Rights Certificate on the books of the within-named Company, with full
power of substitution.

Dated: , ___________,______

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

Signature Guaranteed:

                                  Certificate

         The undersigned hereby certifies by checking the appropriate boxes
that:

         (1) This Rights 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);

<PAGE>   53
         (2) after due inquiry and to the best knowledge of the undersigned, it
[  ] did [  ] did not acquire the Rights evidenced by this Rights Certificate
from any Person who is, was or subsequently became an Acquiring Person or an
Affiliate or Associate of an Acquiring Person.

Dated: , _____________________, _______

                                        ---------------------------------
                                                  Signature
Signature Guaranteed:

                                     NOTICE

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


<PAGE>   54


                                                                       EXHIBIT C


                 SUMMARY OF RIGHTS TO PURCHASE PREFERRED STOCK

         The Board of Directors of Dominion Bridge Corporation (the "Company")
declared a distribution of one Right for each outstanding share of Common Stock
of the Company to stockholders of record at the close of business on November
26, 1996 and to each share of Common Stock that may be issued by the Company
prior to the "Distribution Date" (or the earlier redemption or expiration of
the Rights) described below.

                            Operation of the Rights

         Upon the occurrence of certain events described below, each Right
would entitle its holder to purchase from the Company one one-hundredth of a
share of Series One Preferred Stock, par value $.01 per share (the "Preferred
Stock"), at a purchase price of $10.00 (the "Purchase Price"). Until the Rights
separate from the Common Stock, they cannot be exercised.

         The Rights will separate from the Common Stock upon the earlier to
occur of (i) ten days following a public announcement that a person or group of
affiliated or associated persons (other than Michel L. Marengere or an
affiliate or associate of Mr. Marengere) has acquired, or obtained the right to
acquire, beneficial ownership of shares of the Company's capital stock
representing fifteen percent or more of the voting power of all outstanding
shares of capital stock of the Company, or (ii) ten business days following the
commencement of a tender offer or exchange offer that would result in a person
or group beneficially owning outstanding shares of the Company's capital stock
representing fifteen percent or more of the voting power of all outstanding
shares of capital stock of the Company (in each case, this person or group is
referenced as an "Acquiring Person"). The date upon which the Rights separate
from the Common Stock, and are thereby freely tradable, is called the
"Distribution Date." The Distribution Date can be delayed by an action of the
Board of Directors.

         If, after the Distribution Date, (i) the Company is the surviving
corporation in a merger with an Acquiring Person and its Common Stock is not
changed or exchanged, or (ii) an Acquiring Person becomes the beneficial owner
of shares of the Company's capital stock representing fifteen percent or more
of the voting power of all outstanding shares of capital stock of the Company,
each holder of a Right (instead of having the right to receive Preferred Stock)
will thereafter have the right to receive, upon exercise, Common Stock having a
value equal to two times the exercise price of the Right. This is known as a
"Flip-In" Event. However, any Rights held by an Acquiring Person would not
receive these benefits.

         In the event that, at any time following the Distribution Date, 
(i) the Company is acquired in certain merger or other business combination
transactions (other than a merger described above) in which it does not
survive, or (ii) fifty percent or more of the Company's assets or earning power
is sold or transferred, each holder of a Right (instead of having the right to
purchase Preferred Stock) will thereafter have the right to receive, upon
exercise, common stock of the acquiring company having a value equal to two
times the exercise price of the Right. This is known as a "Flip-Over" Event.
For example, at the exercise price of $100 per Right, each Right not owned by
an Acquiring Person (or by certain related parties) following a "Flip-In" or


<PAGE>   55


"Flip-Over" Event would entitle its holder to purchase $200 worth of Common
Stock (or other consideration, as noted above) for $100. This would be Company
Common Stock if a "Flip-In" event occurred, and the Acquiring Person's common
stock if a "Flip-Over" event occurred.

                            Redemption of the Rights

         At any time until the Distribution Date, the Board of Directors may
unilaterally redeem the Rights at a price of $0.01 per Right. This amount would
be paid to you and would mean that the Rights could no longer be exercised.
Under certain circumstances set forth in the Rights Agreement, the decision to
redeem would require the concurrence of a majority of the Disinterested
Directors (that is, a Board member who is unaffiliated with the Acquiring
Person). After the redemption period has expired, the Company's right of
redemption may be reinstated if an Acquiring Person reduces his beneficial
ownership to fifteen percent or less of the voting power of the capital stock
of the Company in a transaction not involving the Company. Immediately upon the
action of the Board of Directors ordering redemption of the Rights with the
concurrence of a majority of the Disinterested Directors, if required, the
Rights will terminate and the only right of the holders of Rights will be to
receive the $0.01 redemption price.

                  The Board's Ability to Amend the Rights Plan

         Under the Rights Plan, the Board has broad powers to amend the Rights
Plan. Other than those provisions relating to the principal economic terms of
the Rights, any of the provisions of the Rights Agreement may be amended by the
Board prior to the Distribution Date. After the Distribution Date, amendments
may not adversely affect Right holders' interests. Under certain circumstances,
an amendment would require the concurrence of the Disinterested Directors.

              Other Miscellaneous Provisions Under the Rights Plan

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

         With certain exceptions, no adjustment in the Purchase Price will be
required until cumulative adjustments amount to at least one percent of the
Purchase Price.

                   Significance of the Rights Until Exercised

         Until a Right is exercised, its holder has no claim as a stockholder
of the Company arising from the Right itself, including, without limitation,
the right to vote or to receive dividends. While the initial declaration and
distribution of the Rights will not be taxable to the stockholders or the
Company, stockholders may, depending upon the circumstances, recognize

                                  -2-

<PAGE>   56


taxable income in the event that the Rights become exercisable for Common Stock
(or other consideration) of the Company or for common stock of an Acquiring
Person as set forth above.

                        Evidence of Ownership Of Rights

         Until the Distribution Date, (i) the Rights will be evidenced by the
Common Stock certificates and will be transferred only with such Common Stock
certificates, (ii) new Common Stock certificates issued after November 26,
1996, will contain a notation incorporating the Rights Agreement by reference,
and (iii) the surrender for transfer of any certificates for Common Stock will
also constitute the transfer of the Rights associated with the Common Stock
represented by such certificate. TO REPEAT, NO SEPARATE RIGHTS CERTIFICATES
WILL BE DISTRIBUTED UNLESS AND UNTIL A DISTRIBUTION DATE OCCURS. The Rights
will expire at the close of business on November 25, 2006, unless extended or
earlier redeemed by the Board as described below.

         After the Distribution Date (except as otherwise provided above),
Rights Certificates will be mailed to holders of record of the Common Stock as
of the close of business on a Distribution Date and, thereafter, such separate
Rights Certificates alone will represent the Rights.

                          Other Information Available

         This summary description of the Rights does not purport to be complete
and is qualified in its entirety by reference to the Rights Agreement that is
incorporated herein by reference. A copy of the Rights Agreement is available
to any stockholder upon request to Dominion Bridge Corporation, attn: Corporate
Secretary, or by telephone at (514) 634-3550.


                                      -3-

<PAGE>   1

                                                                    Exhibit 99


                           DOMINION BRIDGE CORPORATION

                                                               December 11, 1996

Dear Stockholder:

         Your Board of Directors has adopted a Preferred Stock Purchase Rights
Plan (the "Plan"). The Plan is designed to protect the Company, and you, its
stockholders, in the event of an unsolicited offer to acquire control of the
Company on terms that the Board of Directors determines to be not in the best
interests of the Company because the offer is abusive, coercive or otherwise
unfair. Such offers may include, for example, attempts to acquire control
without offering adequate consideration to all stockholders. The Plan is not
intended to prevent and will not prevent a takeover of the Company that the
Board determines to be in the best interests of the Company. Neither is the
Rights Plan intended to adversely affect the ability of a person to obtain
representation on the Company's Board by means of the proxy process. Under
Delaware law, the Board is charged with responding to a takeover offer in the
first instance, in a manner it determines to be in the best interests of the
Company. The Plan should assist the Board in carrying out this obligation.

         As explained in greater detail in the attached Summary, the Rights
will become exercisable only if and when a situation that they were designed to
address does, in fact, arise. RIGHTS CERTIFICATES WILL NOT BE SENT TO YOU
UNLESS AND UNTIL THEY BECOME EXERCISABLE. The issuance of the Rights does not
dilute share value and does not affect earnings per share. The Rights are not
presently taxable to you or the Company under federal income tax law and they
will not change the manner in which you can presently trade shares of the
Company's common stock.

         The Plan provides, among other things, that upon the earlier of ten
days after a public announcement that a person has become a beneficial owner of
fifteen percent or more of the voting power of all the Company's shares or ten
business days after a person announces an offer to acquire Company shares that
would give it fifteen percent or more of the voting power, each Right will
become exercisable to purchase 1/100 of a share of the Company's Series One
Preferred Stock (a "Unit").

         After the Rights become exercisable, if the Company is acquired in a
merger in which the Company survives, or if a person or group acquires
beneficial ownership of shares representing fifteen percent or more voting
power, then each Right, not previously exercised, would entitle the holder
(other than the acquiror) to purchase Company common stock at a fifty percent
discount to its market price. Alternatively, if the Company is acquired in a
merger or other business combination, the Rights permit holders to purchase the
common stock of the acquiror at a fifty percent discount to its market price.

         The Rights will expire on November 25, 2006, unless further extended,
and will be subject to redemption by the Board of Directors at $0.01 per right
at any time prior to the first date on which they become exercisable.

<PAGE>   2


         A copy of the Rights Agreement is available to any stockholder upon
request to Dominion Bridge Corporation, Attn: Corporate Secretary, or by
telephone at (514) 634-3550.

                                         Sincerely,

                                             /s/ MICHEL L. MARENGERE
                                        ---------------------------------
                                             Chief Executive Officer


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