NORTHWEST PIPE CO
8-A12G, 1999-07-01
STEEL PIPE & TUBES
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<PAGE>

                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

________________________________________________________________________________

                                   FORM 8-A

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



                            NORTHWEST PIPE COMPANY
            (exact name of registrant as specified in its charter)

          Oregon                                        93-0557988
(State or other jurisdiction of                       (IRS Employer
incorporation or organization)                      Identification No.)


12005 N. Burgard, Portland, Oregon                            97203
(Address of principal executive offices)                     (zip code)

Registrant's telephone number, including area code: (503)285-1400

________________________________________________________________________________

       SECURITIES TO BE REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT:

                                     None

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

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

Securities Act registration statement file number to which this form relates:
(if applicable).

     SECURITIES TO BE REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT:

                        Preferred Stock Purchase Rights
                               (Title of Class)
<PAGE>

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

     On June 28, 1999, the Board of Directors of Northwest Pipe Company (the
"Company") declared a dividend of one preferred stock purchase right (a "Right")
for each outstanding share of common stock, par value $.01 per share (the
"Common Stock"), of the Company.  The dividend is payable to shareholders of
record on July 9, 1999 (the "Record Date").  Each Right entitles the registered
holder to purchase from the Company one one-hundredth of a share of Series A
Junior Participating Preferred Stock ("Preferred Stock") at a price of $83.00
per one one-hundredth share (the "Purchase Price"), subject to adjustment.  The
description and terms of the Rights are set forth in a Rights Agreement dated as
of June 28, 1999 (the "Rights Agreement") between the Company and ChaseMellon
Shareholder Services, L.L.C. as Rights Agent (the "Rights Agent").

     Until the earlier to occur of (i) 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
15% or more of the outstanding shares of Common Stock or (ii) 10 business days
(or such later date as the Board of Directors may determine) following the
commencement of a tender offer or exchange offer the consummation of which would
result in the beneficial ownership by a person of 15% or more of the outstanding
shares of Common Stock (the earlier of such dates being called the "Distribution
Date"), the Rights will be evidenced with respect to any shares of Common Stock
outstanding as of the Record Date, by the certificates representing the shares
of Common Stock together with a copy of the Summary of Rights.

     The Rights Agreement provides that, until the Distribution Date (or earlier
expiration of the Rights) the Rights will be transferred with and only with the
Common Stock.  Until the Distribution Date (or earlier expiration of the
Rights), new Common Stock certificates issued after the Record Date upon
transfer or new issuances of Common Stock will contain a notation incorporating
the Rights Agreement by reference.  Until the Distribution Date (or earlier
expiration of the Rights) the surrender for transfer of any certificates for
Common Stock outstanding as of the Record Date will also constitute the transfer
of the Rights associated with the Common Stock represented by such certificate.
As soon as practicable following the Distribution Date, separate certificates
evidencing the Rights ("Rights Certificates") will be mailed to holders of
record of the Common Stock as of the close of business on the Distribution Date
and, thereafter, the separate Rights Certificates alone will evidence the
Rights.

     The Rights are not exercisable until the Distribution Date.  The Rights
will expire at the close of business on June 28, 2009 (the "Final Expiration
Date"), unless the Final Expiration Date is advanced or extended or unless the
Rights are earlier redeemed or exchanged by the Company as described below.

     The Purchase Price payable, and the number of one one-hundredths of a share
of Preferred Stock or other securities or property issuable upon exercise of the
Rights are subject to
<PAGE>

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) upon the grant to holders of the Preferred Stock of certain rights or
warrants to subscribe for or purchase 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).

     The number of outstanding Rights is subject to adjustment in the event of a
stock dividend on the Common Stock payable in shares of Common Stock or
subdivisions, consolidations or combinations of the Common Stock occurring, in
any such case, prior to the Distribution Date.

     Shares of Preferred Stock purchasable upon exercise of the Rights will not
be redeemable.  Each share of Preferred Stock will be entitled, when, as and if
declared, to a minimum preferential quarterly dividend payment of the greater of
(a) $1 per share, and (b) an amount equal to 100 times the dividend declared per
share of Common Stock.  In the event of liquidation, dissolution or winding up
of the Company, the holders of the Preferred Stock will be entitled to a minimum
preferential payment of the greater of (a) $1 per share (plus any accrued but
unpaid dividends), and (b) an amount equal of 100 times the payment made per
share of Common Stock.  Each share of Preferred Stock will have 100 votes,
voting together with the Common Stock.  Finally, in the event of any merger,
consolidation or other transactions in which outstanding shares of Common Stock
are converted or exchanged, each share of Preferred Stock will be entitled to
receive 100 times the amount received per share of Common Stock.  These rights
are protected by customary antidilution provisions.

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

     In the event that any Person or group of affiliated or associated persons
becomes an Acquiring Person, each holder of a Right, other than Rights
beneficially owned by the Acquiring Person (which will become null and void),
will thereafter have the right to receive, upon exercise of a Right that number
of shares of Common Stock having a value equal to two times the exercise price
of the Right.

     In the event that, after a person or group has become an Acquiring Person,
the Company is acquired in a merger or other business combination transaction or
50% or more of the Company's assets or earning power is sold or transferred,
proper provision shall be made so that each holder of a Right (except Rights
which previously have been voided as set forth above) will thereafter have the
right to receive upon the exercise of a Right that number of shares of common
stock of the acquiring company having a market value equal to two times the
exercise price of the Right.
<PAGE>

     At any time after a person or group of affiliated or associated persons
becomes an Acquiring Person and prior to the acquisition by such person or group
of 50% or more of the outstanding shares of Common Stock, the Board of Directors
of the Company may exchange the Rights (other than Rights owned by such person
or group which have become void), in whole or in part, at an exchange ratio of
one share of Common Stock per Right (subject to adjustment).

     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 shares will be issued and in lieu thereof,
an adjustment in cash will be made based on the current market price of the
Preferred Stock or the Common Stock.

     In general, the Company may redeem the Rights in whole, but not in part, at
any time until ten days after the date an Acquiring Person has become such, at a
price of $.01 per Right (payable in cash, Common Stock or other consideration
deemed appropriate by the Board of Directors).  After the redemption period has
expired, the Company's right of redemption may be reinstated if an Acquiring
Person reduces his beneficial ownership to 10% or less of the outstanding shares
of Common Stock in a transaction or series of transactions not involving the
Company and there are no other Acquiring Persons.  Immediately upon the action
of the Board of Directors of the Company ordering redemption of the Rights, the
Rights will terminate and the only right of the holders of Rights will be to
receive the $.01 redemption price.

     All of the provisions of the Rights Agreement may be amended by the Board
of Directors of the Company prior to the Distribution Date.  After the
Distribution Date, the provisions of the Rights Agreement may be amended by the
Board in order to cure any ambiguity, defect or inconsistency or to make any
other changes which do not adversely affect the interests of holders of Rights
(excluding the interests of any Acquiring Person).

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

     The Rights Agreement between the Company and the Rights Agent specifying
the terms of the Rights is attached hereto as Exhibit 1.1.  The foregoing
description of the Rights does not purport to be complete and is qualified in
its entirety by reference to the Rights Agreement.
<PAGE>

Item 2.   Exhibits

          Exhibit             Description
          Number

          1.1       Rights Agreement dated as of June 28, 1999 between the
                    Company and ChaseMellon Shareholder Services, L.L.C. as
                    Rights Agent, including the form of Articles of Amendment
                    designating the rights and preferences of the Series A
                    Junior Participating Preferred Stock, Summary of Rights to
                    Purchase Preferred Stock and form of Rights Certificate
                    attached thereto as Exhibits A, B and C, respectively.



                                  SIGNATURES

     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 on June 28, 1999.

                                        NORTHWEST PIPE COMPANY
                                        (Registrant)


                                        /s/ Brian W. Dunham
                                        ----------------------------------------
                                        Brian W. Dunham, President

<PAGE>

                                 EXHIBIT INDEX
                                 -------------

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

1.1                 Rights Agreement dated as of June 28, 1999 between the
                    Company and ChaseMellon Shareholder Services, L.L.C. as
                    Rights Agent, including the form of Articles of Amendment
                    designating the rights and preferences of the Series A
                    Junior Participating Preferred Stock, Summary of Rights to
                    Purchase Preferred Stock and form of Rights Certificate
                    attached thereto as Exhibits A, B and C, respectively.

<PAGE>

                                                                     Exhibit 1.1



                               RIGHTS AGREEMENT

                                    BETWEEN

                            NORTHWEST PIPE COMPANY

                                      AND

                   CHASEMELLON SHAREHOLDER SERVICES, L.L.C.



                                 June 28, 1999
<PAGE>

                               TABLE OF CONTENTS
<TABLE>
<S>            <C>                                                                                          <C>
Section 1.     Certain Definitions........................................................................   1

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

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

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

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

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

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

Section 8.     Cancellation and Destruction of Rights Certificates........................................   9

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

Section 10.    Preferred Stock Record Date................................................................  11

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

Section 12.    Certificate of Adjusted Purchase Price or Number of Shares.................................  19

Section 13.    Consolidation, Merger or Sale or Transfer of Assets or Earning Power.......................  19

Section 14.    Fractional Rights and Fractional Shares....................................................  21

Section 15.    Rights of Action...........................................................................  22

Section 16.    Agreement of Rights Holders................................................................  22

Section 17.    Rights Certificate Holder Not Deemed a Shareholder.........................................  23

Section 18.    Duties of Rights Agent.....................................................................  23

Section 19.    Compensation and Indemnification of the Rights Agent.......................................  25

Section 20.    Merger or Consolidation or Change of Name of Rights Agent..................................  26
</TABLE>

                                       1
<PAGE>

<TABLE>
<S>            <C>                                                                                          <C>
Section 21.    Change of Rights Agent.....................................................................  26

Section 22.    Issuance of New Rights Certificates........................................................  27

Section 23.    Redemption.................................................................................  27

Section 24.    Exchange...................................................................................  28

Section 25.    Notice of Certain Events...................................................................  29

Section 26.    Notices....................................................................................  30

Section 27.    Supplements and Amendments.................................................................  30

Section 28.    Successors.................................................................................  31

Section 29.    Determinations and Actions by the Board of Directors, etc..................................  31

Section 30.    Benefits of this Agreement.................................................................  31

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

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

Section 33.    Counterparts...............................................................................  32

Section 34.    Descriptive Headings.......................................................................  33
</TABLE>

                                       2
<PAGE>

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


     This Rights Agreement, dated as of June 28, 1999 (the "Agreement"), between
Northwest Pipe Company, an Oregon corporation (the "Company"), and ChaseMellon
Shareholder Services, L.L.C., a New Jersey limited liability company (the
"Rights Agent").

     WHEREAS, on June 28, 1999 the Board of Directors of the Company authorized
and declared a dividend of one preferred stock purchase right (a "Right") for
each share of Common Stock (as hereinafter defined) of the Company outstanding
at the close of business on July 9, 1999 (the "Record Date"), and has authorized
the issuance of one Right with respect to each share of Common Stock of the
Company issued between the Record Date and the Distribution Date (as hereinafter
defined), each Right initially representing the right to purchase one one-
hundredth of a share of Series A Junior Participating Preferred Stock of the
Company having the rights, powers and preferences set forth in the form of
Articles of Amendment attached hereto as Exhibit A, upon the terms and subject
to the conditions hereinafter set forth.

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

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

             (a)    "Acquiring Person" shall mean any Person (as such term is
hereinafter defined) who or which, together with all Affiliates and Associates
(as such terms are hereinafter defined) of such Person, shall be the Beneficial
Owner (as such term is hereinafter defined) of 15% or more of the shares of
Common Stock then outstanding, but shall not include the Company, any Subsidiary
of the Company, or any employee benefit plan of the Company or any Subsidiary of
the Company, or any Person or entity holding shares of Common Stock for or
pursuant to the terms of any such plan to the extent, and only to the extent, of
such shares so held. Notwithstanding the foregoing:

                    (i)  if, at the close of business on the date hereof, any
     Person is the Beneficial Owner of 15% or more of the shares of Common Stock
     then outstanding, such Person shall not be or become an "Acquiring Person"
     unless and until such Person (together with any Affiliate or Associate of
     such Person) becomes the Beneficial Owner of an additional 1% or more of
     the shares of Common Stock then outstanding (other than pursuant to a stock
     dividend, stock split, recapitalization or similar transaction that does
     not affect the percentage of outstanding Common Stock beneficially owned by
     such Person), provided further that this clause (i) will not apply to any
     Person if, at any time after the date hereof, such Person ceases to be the
     Beneficial Owner of 15% or more of the shares of Common Stock then
     outstanding;

1
<PAGE>

               (ii)  no Person shall become an "Acquiring Person" as the result
     of an acquisition of shares of Common Stock by the Company which, by
     reducing the number of shares outstanding, increases the proportionate
     number of shares beneficially owned by such Person (together with any
     Affiliate or Associate of such Person) to 15% or more of the shares of
     Common Stock of the Company then outstanding; provided, however, that if a
     Person shall become the Beneficial Owner of 15% or more of the shares of
     Common Stock of the Company then outstanding by reason of share purchases
     by the Company and shall thereafter (together with any Affiliate or
     Associate) become the Beneficial Owner of any additional shares of Common
     Stock (other than pursuant to a stock dividend, stock split,
     recapitalization or similar transaction that does not affect the percentage
     of outstanding Common Stock beneficially owned by such Person), then such
     Person shall be deemed to be an "Acquiring Person" if such Person is then
     the Beneficial Owner of 15% or more of the Common Stock then outstanding;
     and

               (iii) if the Board of Directors of the Company determines in good
     faith that a Person who would otherwise be an "Acquiring Person," as
     defined in this paragraph (a), has become such inadvertently, and such
     Person divests as promptly as practicable a sufficient number of shares of
     Common Stock so that such Person would no longer be an "Acquiring Person,"
     then such Person shall not be deemed an "Acquiring Person" for any purposes
     of this Agreement unless and until such Person shall again become an
     "Acquiring Person."

          (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, as 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:

                (i)   which such Person or any of its Affiliates or Associates,
     directly or indirectly, beneficially owns (as determined pursuant to Rule
     13d-3 under the Exchange Act as in effect on the date hereof);

                (ii)  which such Person or any of its Affiliates or Associates,
     directly or indirectly, has the right to acquire (whether such right is
     exercisable immediately or only upon the occurrence of certain events or
     the passage of time or both) pursuant to any agreement, arrangement or
     understanding (whether or not in writing), or otherwise (other than
     pursuant to the Rights); provided, however, that a Person shall not be
     deemed the "Beneficial Owner" of, or to "beneficially own," securities
     tendered pursuant to a tender or exchange offer made by or on behalf of
     such Person or any of such Person's Affiliates or Associates until such
     tendered securities are accepted for purchase or exchange;

                (iii) which such Person or any of such Person's Affiliates or
     Associates, directly or indirectly, has the right to vote (whether such
     right is exercisable immediately or

2
<PAGE>

     only upon the occurrence of certain events or the passage of the time or
     both) pursuant to any agreement, arrangement or understanding (whether or
     not in writing) or otherwise; provided, however, that a Person shall not be
     deemed the "Beneficial Owner" of, or to "beneficially own", any security
     under this subparagraph (iii) 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

               (iv) 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 (iii) of this paragraph (c)) or
     disposing of any such securities of the Company; provided, however, that
     nothing in this paragraph (c) shall cause a Person engaged in business as
     an underwriter of securities to be the "Beneficial Owner" of, or to
     "beneficially own," any securities acquired through such Person's
     participation in good faith in a firm commitment underwriting until the
     expiration of forty days after the date of such acquisition.

          (d)  "Business Day" shall mean any day other than a Saturday, Sunday,
or a day on which banking or trust 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.,
Portland, Oregon time, on such date; provided, however, that if such date is not
a Business Day it shall mean 5:00 P.M, Portland, Oregon time, on the next
succeeding Business Day.

          (f)  "Common Stock" when used with reference to the Company shall mean
the shares of common stock, par value $.01 per share, of the Company. "Common
Stock" when used with reference to any Person other than the Company shall mean
the class of capital stock with the greatest aggregate voting power, or the
class of equity securities or other equity interests having power to control or
direct the management, of such Person.

          (g)  "Distribution Date" shall mean the earlier of (i) the Close of
Business on the tenth day after the Stock Acquisition Date (or, if the tenth day
after the Stock Acquisition Date occurs before the Record Date, the Close of
Business on the Record Date), or (ii) the Close of Business on the tenth
Business Day (or, if such tenth Business Day occurs before the Record Date, the
Close of Business on the Record Date), or such specified or unspecified later
date as may be determined by the Board of Directors of the Company, after the
date of the commencement of a tender or exchange offer by any Person, if upon
consummation thereof, such Person would be an Acquiring Person.

3
<PAGE>

            (h)     "Expiration Date" shall mean the earlier of (i) the Final
Expiration Date and (ii) the time at which all Rights are redeemed as provided
in Section 23 or exchanged as provided in Section 24.

            (i)     "Final Expiration Date" shall mean the Close of Business on
June 28, 2009.

             (j)    "Person" shall mean any individual, firm, corporation,
partnership or other entity, and shall include any successor (by merger or
otherwise) of such entity.

            (k)     "Preferred Stock" shall mean shares of Series A Junior
Participating Preferred Stock, par value $.01 per share, of the Company.

            (l)     "Purchase Price" shall mean the price (subject to adjustment
as provided herein) at which a holder of a Right may purchase one one-hundredth
of a share of Preferred Stock (subject to adjustment as provided herein) upon
exercise of a Right, which price shall initially be $83.00.

             (m)    "Rights Certificate" shall have the meaning set forth in
Section 3 hereof.

             (n)    "Section 11(a)(ii) Event" shall mean any event described in
Section 11(a)(ii) hereof.

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

            (p)     "Stock Acquisition Date" shall mean the date of the first
public announcement (which, for purposes of this definition, shall include,
without limitation, a report filed pursuant to Section 13(d) of the Exchange
Act) by the Company or an Acquiring Person indicating that an Acquiring Person
has become such; provided, however, that if such Person has been determined not
to have become an Acquiring Person pursuant to Section 1(a) hereof, then a Stock
Acquisition Date shall not be deemed to have occurred.

            (q)     "Subsidiary" of any Person shall mean any corporation or
other entity of which a majority of the voting power of the voting equity
securities or equity interests is owned, directly or indirectly, by such Person,
or is otherwise controlled by such Person.

             (r)    "Triggering Event" shall mean any Section 11(a)(ii) Event or
any Section 13 Event.

     Section 2.  Appointment of Rights Agent.  The Company hereby appoints the
                 ---------------------------
Rights Agent to act as agent for the Company in accordance with the terms and
conditions hereof, and the Rights Agent hereby accepts such appointment.  The
Company may from time to time appoint such Co-Rights Agents as it may deem
necessary or desirable; provided no such appointment shall change

4
<PAGE>

or increase the Rights Agent's duties, liabilities or obligations, the Rights
Agent shall have no duty to supervise, and in no event shall be liable for, the
acts or omissions of any such co-Rights Agent.

     Section 3.  Issue of Rights Certificates.
                 ----------------------------

             (a)    Prior to the Distribution Date, (i) the Rights will be
evidenced by the certificates for the Common Stock and the registered holders of
the Common Stock shall be deemed to be the registered holders of the associated
Rights, and (ii) the Rights will be transferable only in connection with the
transfer of the underlying shares of Common Stock. As promptly as practicable
after the Record Date, the Company will send a copy of a Summary of Rights to
Purchase Preferred Stock, in substantially the form attached hereto as Exhibit
B, by first-class, postage prepaid mail, to each record holder of Common Stock
as of the Close of Business on the Record Date at the address of such holder
shown on the records of the Company.

             (b)    Rights shall be issued in respect of all shares of Common
Stock outstanding as of the Record Date or issued after the Record Date but
prior to the earlier of the Distribution Date and the Expiration Date. Rights
shall also be issued to the extent provided in Section 22 in respect of all
shares of Common Stock which are issued after the Distribution Date and prior to
the Expiration Date.

             (c)    Certificates representing shares of Common Stock issued
after the Record Date but prior to the earlier of the Distribution Date and the
Expiration Date shall have impressed on, printed on, written on or otherwise
affixed to them the following legend:

             This certificate also evidences certain Rights as set
             forth in a Rights Agreement between Northwest Pipe
             Company (the "Company") and ChaseMellon Shareholder
             Services, L.L.C. (the "Rights Agent") dated as of June
             28, 1999 (the "Rights Agreement"), the terms of which are
             hereby incorporated herein by reference and a copy of
             which is on file at the principal executive offices of
             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, may be redeemed or exchanged or may
             expire. The Company will mail to the holder of this
             certificate a copy of the Rights Agreement as in effect
             on the date of mailing without charge 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 Affiliate
             or Associate 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.

5
<PAGE>

             (d)    As soon as practicable after the Company has notified the
Rights Agent of the occurrence of the Distribution Date and requested the
transfer agent to provide the Rights Agent with a list of shareholders, the
Rights Agent will send by first-class, insured, postage prepaid mail, to each
record holder of 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 C 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 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 Right Certificates.

     Section 4.  Form of Rights Certificates.
                 ---------------------------

             (a)    The Rights Certificates (and the forms of election to
purchase and of assignment to be printed on the reverse thereof) shall be in
substantially the form set forth in Exhibit C hereto and may have such marks of
identification or designation and such legends, summaries or endorsements
printed thereon as the Company may deem appropriate (which do not affect the
duties or responsibilities of the Rights Agent) and as are not inconsistent with
the provisions of this Agreement, or as may be required to comply with any
applicable law or with any rule or regulation made pursuant thereto or with any
rule or regulation of any stock exchange on which the Rights may from time to
time be listed, or to conform to usage. The Rights Certificates shall be in
machine printable format and in a form reasonably satisfactory to the Rights
Agent. The Rights Certificates, whenever distributed, shall be dated as of the
Record Date and shall show the date at countersignature.

             (b)    Any Rights Certificate that represents Rights beneficially
owned by any Person referred to in clauses (i), (ii) or (iii) of the first
sentence of Section 7(d) shall (to the extent feasible) contain 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(d) of such
             Agreement.

     Section 5.  Countersignature and Registration.
                 --------------------------------

             (a)    The Rights Certificates shall be executed on behalf of the
Company by its President or a Vice-President either manually or by facsimile
signature, and have affixed thereto the

6
<PAGE>

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 and receipt by the Rights
Agent of the notice and list of record holders of Common Stock referred to in
Section 3(d), the Rights Agent will keep or cause to be kept, at its 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 and the number of Rights
evidenced on its face by each of the Rights Certificates.

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

             (a)    At any time after the Distribution Date and prior to the
Expiration Date, any Rights Certificate or Certificates may, upon the terms and
subject to the conditions set forth below in this Section 6(a), be transferred
or exchanged for another Rights Certificate or Certificates evidencing a like
number of Rights as the Rights Certificate or Certificates surrendered. Any
registered holder desiring to transfer or exchange any Rights Certificate shall
make such request in writing delivered to the Rights Agent, and shall surrender
the Rights Certificate or Certificates (with, in the case of transfer, the form
of assignment and certificate on the reverse side thereof duly executed) to the
Rights Agent at the office of the Rights Agent designated for such purpose.
Neither the Rights Agent nor the Company shall be obligated to take any action
whatsoever with respect to the transfer of any such surrendered Rights
Certificate until the registered holder shall have complied with the
requirements of Section 7(e). Upon satisfaction of the foregoing requirements,
the Rights Agent shall, subject to Sections 4(b), 7(d), 14 and 24 hereof,
countersign and deliver to the person entitled thereto a Rights Certificate or
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 or exchange of Rights Certificates, and
the Rights Agent shall not be required to take any action with respect to any
such transaction until it has received satisfactory evidence that all taxes and
governmental charges payable with respect to such transaction have been paid.

             (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

7
<PAGE>

of loss, theft or destruction, of indemnity or security satisfactory to them,
and, at the Company's request, reimbursement to the Company and the Rights Agent
of all reasonable expenses incidental thereto, and upon surrender to the Rights
Agent and cancellation of the Rights Certificate if mutilated, the Company will
issue and deliver a new Rights Certificate of like tenor to the Rights Agent for
countersignature and delivery to the registered owner in lieu of the Rights
Certificate so lost, stolen, destroyed, or mutilated.

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

             (a)    The registered holder of any Rights Certificate may exercise
the Rights evidenced thereby (except as otherwise provided herein including,
Sections 7(d) and (e), 9(c), 11(a), 23 and 24 hereof) in whole or in part at any
time after the Distribution Date and prior to the Expiration 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 office of the Rights Agent designated for such purpose, together with
payment (in lawful money of the United States of America by certified check or
bank draft payable to the order of the Company) of the aggregate Purchase Price
with respect to the Rights then to be exercised and an amount equal to any
applicable transfer tax or other governmental charge.

             (b)    Upon satisfaction of the requirements of Section 7(a) and
subject to Section 18(k), the Rights Agent shall 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) 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 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 receipt shall be deposited by the transfer agent with
the depositary agent) and the Company will direct the depositary to comply with
such request, (ii) requisition from the Company the amount of cash, if any, to
be paid in lieu of issuance of fractional shares in accordance with Section 14,
and (iii) after receipt of such certificates or depositary receipts and cash,
cause the same to be delivered to or upon the order of the registered holder of
such Right Certificate, registered in such name or names as may be designated by
such holder. 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) hereof, the Company will make all
arrangements necessary so that such securities, cash and/or other property are
available for distribution by the Rights Agent, if and when necessary to comply
with this Agreement.

             (c)    In case the registered holder of any Rights Certificate
shall exercise less than all the Rights evidenced thereby, a new Rights
Certificate evidencing 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 6 and Section 14 hereof.

8
<PAGE>

            (d)     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 in any such Associate
or Affiliate) or to any Person with whom such Acquiring Person (or any such
Associate or Affiliate) 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 an agreement, arrangement
or understanding which has as a primary purpose or effect the avoidance of this
Section 7(d), 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(d) and Section 4(b) hereof are complied with, but neither the Company nor the
Rights Agent shall have any liability to any holder of Rights Certificates or
other Person as a result of the Company's failure to make any determinations
with respect to an Acquiring Person or its Affiliates, Associates or transferees
hereunder.

            (e)     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 of Rights upon the occurrence of any
purported transfer pursuant to Section 6 or exercise pursuant to this Section 7
unless such registered holder (i) shall have properly completed and signed the
certificate contained in the form of assignment or election to purchase, as the
case may be, set forth on the reverse side of the Rights Certificate surrendered
for such transfer or exercise, as the case may be, (ii) shall not have indicated
an affirmative response to clause (i) or (ii) thereof, and (iii) 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 or
the Rights Agent shall reasonably request.

     Section 8.  Cancellation and Destruction of Rights Certificates.  All
                 ---------------------------------------------------
Rights Certificates surrendered for the purpose of exercise, transfer, split up,
combination or exchange shall, if surrendered to the Company or to any of its
agents, be delivered to the Rights Agent for cancellation or in canceled form,
or, if surrendered to the Rights Agent, shall be canceled by it, and no Rights
Certificates shall be issued in lieu thereof except as expressly permitted by
any 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
<PAGE>

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

            (a)     The Company covenants and agrees that it will cause to be
reserved and kept available out of its authorized and unissued shares 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), the
number of shares of Preferred Stock (and, following a Triggering Event, shares
of 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)    In the event the shares of Preferred Stock (and, following
the occurrence of a Triggering Event, Common Stock and/or other securities)
issuable upon the exercise of Rights become listed on any stock 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 this
Agreement, or as soon as is required by law following the Distribution Date, as
the case may be, a registration statement under the Securities Act of 1933, as
amended (the "Act"), with respect to securities issuable upon exercise of the
Rights, (ii) cause such registration statement to become effective as soon as
practicable after such filing, and (iii) cause such registration statement to
remain effective (with a prospectus at all times meeting the requirements of the
Act) until the earlier of (A) the date as of which the Rights are no longer
exercisable for such securities, and (B) the Expiration Date. The Company will
also take such action as may be appropriate under, or to ensure compliance with,
the securities or "blue sky" laws of the various states in connection with the
exercisability of the Rights. The Company may temporarily suspend, for a period
of time not to exceed 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 suspension of exercisability of Rights referred to in this
Section 9(c), 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. The Company
shall provide promptly a copy of all such announcements to the Rights Agent.
Notwithstanding any provision of this Agreement to the contrary, the Rights
shall not be exercisable for securities in any jurisdiction where the requisite
qualification in such jurisdiction shall not have been obtained or be
obtainable, or the exercise thereof shall not be permitted under applicable law
or a registration statement shall not have been declared effective.

            (d)     The Company covenants and agrees that it will take all such
action as may be necessary to ensure that all 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
non-assessable.

10
<PAGE>

             (e)    The Company further covenants and agrees that it will pay
when due and payable any and all taxes and governmental charges which may be
payable in respect of the issuance or delivery of the Rights Certificates or 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 tax
or charge 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 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 of the Rights Certificate 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 any such tax or charge shall have
been paid (any such tax or charge 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 or charge is due.  The Rights Agent
shall have no duty or obligation to take any action under any Section of this
Agreement which requires the payment by a Rights holder of applicable taxes and
governmental charges unless and until the Rights Agent is satisfied that all
such taxes and/or charges have been paid.

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

     Section 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), the
Purchase Price in effect immediately prior to the record date for such dividend
or of the effective date of such subdivision, combination or

11
<PAGE>

reclassification, and the number and kind of shares of Preferred Stock or the
number and kind of shares of capital stock issuable on such date as the case may
be, shall be proportionately adjusted so that the holder of any Right exercised
after such time shall (except as otherwise provided herein, including Section
7(d)) be entitled to receive, upon payment of the aggregate adjusted Purchase
Price then in effect necessary to exercise a Right in full, the aggregate number
and kind of shares of Preferred Stock or the number and kind of shares of
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 (or other
capital stock, as the case may be) 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 that any Person, alone or together with its
     Affiliates and Associates, shall, at any time after the date of this
     Agreement, become an Acquiring Person, proper provision shall promptly be
     made so that each holder of a Right (except as otherwise provided herein,
     including Section 7(d) 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 Preferred Stock, such number of
     duly authorized, validly issued, fully paid and nonassessable 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 or would
     have been exercisable immediately prior to the first occurrence of a
     Section 11(a)(ii) Event, whether or not such Right was then exercisable,
     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 per
     share of Common Stock (determined pursuant to Section 11(d) hereof) on the
     date of such first occurrence (such number of shares, the "Adjustment
     Shares"); provided, however, that if the transaction that would otherwise
     give rise to the foregoing adjustment is also subject to the provisions of
     Section 13 hereof, then only the provisions of Section 13 hereof shall
     apply and no adjustment shall be made pursuant to this Section 11(a)(ii).

               (iii) If the number of shares of Common Stock which are
     authorized by the Company's articles of incorporation but not outstanding
     or reserved for issuance other than upon exercise of the Rights is not
     sufficient to permit the exercise in full of the Rights in accordance with
     Section 11(a)(ii), the Company shall, with respect to each Right, make
     adequate provision to substitute for the Adjustment Shares, upon payment of
     the Purchase Price then in effect, (A) (to the extent available) Common
     Stock and then, (B) (to the extent available) other equity securities of
     the Company which the Board of Directors has determined to be essentially
     equivalent to shares of Common Stock in respect to dividend, liquidation
     and voting rights (such securities being referred to herein as "common
     stock equivalents") and then, if necessary, (C) other equity or debt
     securities of the Company, cash or other assets, a reduction in the
     Purchase Price or any combination of the foregoing, having

12
<PAGE>

     an aggregate value (as determined by the Board of Directors based upon the
     advice of an investment banking firm selected by the Board of Directors)
     equal to the value of the Adjustment Shares; provided that (x) the Company
     may, and (y) if the Company shall not have made adequate provision as
     required above to deliver value within 30 days following the later of the
     first occurrence of a Section 11(a)(ii) Event and the first date that the
     right to redeem the Rights pursuant to Section 23 shall expire, then the
     Company shall be obligated to, deliver, upon the surrender for exercise of
     a Right and without requiring payment of the Purchase Price, (1) (to the
     extent available) Common Stock and then (2) (to the extent available)
     common stock equivalents and then, if necessary, (3) other equity or debt
     securities of the Company, cash or other assets or any combination of the
     foregoing, having an aggregate value (as determined by the Board of
     Directors based upon the advice of an investment banking firm selected by
     the Board of Directors) equal to the excess of the value of the Adjustment
     Shares over the Purchase Price. If the Board of Directors 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 first occurrence of
     a Section 11(a)(ii) Event, 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 action
     is to be taken pursuant to the preceding provisions of this Section
     11(a)(iii), the Company (x) shall provide, subject to Section 7(d) 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 the first sentence of this Section 11(a)(iii) and to determine the value
     thereof. In the event of any such suspension, the Company shall issue a
     public announcement stating that the exercisability of the Rights has been
     temporarily suspended, as well as a public announcement at such time as the
     suspension is no longer in effect. The Company shall contemporaneously
     provide the Rights Agent with a copy of any such announcement. 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 later of the first occurrence of a Section
     11(a)(ii) Event and the first date that the right to redeem the Rights
     pursuant to Section 23 shall expire; any "common stock equivalent" shall be
     deemed to have the same value as the Common Stock on such date; and the
     value of other securities or assets shall be determined pursuant to Section
     11(d)(iii).

               (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
(for a period expiring within forty-five (45) calendar days after such record
date) to subscribe for or purchase 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 at a price per
share of Preferred Stock or per share of equivalent preferred stock (or having a
conversion price per share of Preferred Stock, if a security convertible into
Preferred Stock) less than the current per share market price of the Preferred
Stock (as defined in Section 11(d)) on such record date, the Purchase Price to
be in effect

13
<PAGE>

after such record date shall be determined by multiplying the Purchase Price in
effect immediately prior to such record date by a fraction, the numerator of
which shall be the number of shares of Preferred Stock outstanding on such
record date, plus the number of shares of Preferred Stock 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 in a consideration part or all of which shall be in a form other than
cash, the value of such consideration shall be as determined in good faith by
the Board of Directors of the Company, whose determination shall be described in
a statement filed with the Rights Agent. 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 or surviving corporation) of evidences of indebtedness, cash (other
than a regular quarterly cash dividend out of the earnings or retained earnings
of the Company), assets (other than a dividend payable in Preferred Stock, but
including any dividend payable in stock other than Preferred Stock), or
subscription rights or warrants (excluding those referred to in Section 11(b)),
the Purchase Price to be in effect after such record date shall be determined by
multiplying the Purchase Price in effect immediately prior to such record date
by a fraction, the numerator of which shall be the current per share market
price of the Preferred Stock (as defined in Section 11(d)) on such record date,
less the fair market value (as determined in good faith by the Board of
Directors, 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 per
share market price of the Preferred Stock. Such adjustment shall be made
successively whenever such a record date is fixed; and in the event that such
distribution is not so made, the Purchase Price shall again be adjusted to be
the Purchase Price which would then be in effect if such record date had not
been fixed.

               (d)(i)  For the purpose of any computation hereunder, the
"current market price" of the 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 30
consecutive Trading Days (as such term is hereinafter defined) immediately prior
to and not including 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 Common Stock for the ten (10) consecutive Trading Days immediately
following and not including such date; provided, however, that in the event that
the current market price of the Common Stock is determined during

14
<PAGE>

a period following the announcement by the issuer of such Common Stock of (i) a
dividend or distribution on such Common Stock payable in shares of such Common
Stock or securities convertible into such Common Stock (other than the Rights),
or (ii) 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 appropriately 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 Quotations 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 shares of 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 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, the term "Trading Day" shall mean a Monday,
Tuesday, Wednesday, Thursday or Friday on which banking institutions in the
State of New York are not authorized or obligated by law or executive order to
close. If the Common Stock is not publicly held or not listed or traded,
"current market price" 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.

                    (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,

15
<PAGE>

     "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,
     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 such price;
provided, however, that any adjustments which by reason of this Section 11(e)
are not required to be made shall be carried forward and taken into account in
any subsequent adjustment. All calculations under this Section 11 shall be made
to the nearest cent or to the nearest 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), an adjustment
required by this Section 11 shall be made no later than the earlier of (i) three
years from the date of the transaction which requires 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 of the Company
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.

               (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-
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 issuable upon
the exercise of a Right. Each of the Rights outstanding

16
<PAGE>

after such adjustment of 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 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 (and contemporaneously
deliver a copy of such announcement to the Rights Agent) 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.

               (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-par 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 non-assessable 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, and shall provide the Rights
Agent with notice of such election, 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

17
<PAGE>

exercise on the basis of the Purchase Price in effect prior to such adjustment;
provided, however, that the Company shall deliver to such holder a due bill or
other appropriate instrument evidencing such holder's right to receive such
additional shares upon the occurrence of the event requiring such adjustment.
The Company shall contemporaneously provide the Rights Agent with a copy of any
such election.

               (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 it in its sole discretion 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 Preferred Stock, (iv) stock dividends or (v) issuance of rights, options or
warrants referred to hereinabove 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, (ii)
merge with or into any other Person, 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
other Person or Persons, if (x) at the time of or immediately after such
consolidation, merger or sale there are any charter or bylaw provisions or 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, or would constitute, the "Principal Party" for purposes
of Section 13(a) hereof shall have received a distribution of Rights previously
owned by such Person or any of its Affiliates and Associates.

               (o)  The Company covenants and agrees that, after the
Distribution Date, it will not, except as permitted by Sections 23, 24 or 27
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 date hereof 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

18
<PAGE>

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.

     Section 12.  Certificate of Adjusted Purchase Price or Number of Shares.
                  ----------------------------------------------------------
Whenever an adjustment is made as provided in Sections 11 or 13 hereof, the
Company shall (a) promptly prepare a certificate setting forth such adjustment,
and a brief, reasonably detailed statement of the facts, computations and
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, shall have no duty with
respect to, and shall not be deemed to have knowledge of any adjustment unless
and until it shall have received such certificate.

     Section 13.  Consolidation, Merger or Sale or Transfer of Assets or Earning
                  --------------------------------------------------------------
Power.
- -----
          (a) In the event that, following the Stock Acquisition Date, directly
or indirectly, (x) the Company shall consolidate with, or merge with and into,
any other Person, and the Company shall not be the continuing or surviving
corporation of such consolidation or merger, (y) any Person shall consolidate
with, or merge with or into, the Company, and the Company shall be the
continuing or surviving corporation of such consolidation or merger and, in
connection with such consolidation or merger, all or part of the outstanding
shares of Common Stock shall be changed into or exchanged for stock or other
securities of 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,
then, and in each such case, proper provision shall be made so that: (i) each
holder of a Right, except as provided herein, including Section 7(d) 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
tradable 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 was 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 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 by the Purchase Price in effect immediately prior to
such first occurrence), and (2) dividing that product (which product, 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 per share of the shares of Common Stock of such
Principal Party on the date of consummation of such Section 13 Event (or the
fair market value on such date of other securities or property of the

19
<PAGE>

Principal Party, as provided for herein); (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.

          (b)  "Principal Party" shall mean

               (i)  in the case of any transaction described in clause (x) or
     (y) of the first sentence of Section 13(a), 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

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

          (c)  The Company shall not consummate any Section 13 Event 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 such Section 13 Event, 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

20
<PAGE>

               (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) hereof.

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

          (a) The Company shall not be required to issue fractions of Rights
except prior to the Distribution Date as provided in Section 11(p) hereof, or to
distribute Rights Certificates 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 the whole Right.  For the purposes of this Section 14(a), the current
market value of a whole Right shall be the closing price of the Rights for the
Trading Day immediately prior to the date on which such fractional Rights would
have been otherwise issuable.  The closing price for any day shall be the last
sale price, or, in case no such sale takes place on such day, the average of the
high bid and low asked prices, in either case 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.  In the event the Rights are listed or admitted to trading on a national
securities exchange, the closing price for any day shall be the last sale price,
regular way, or, in case no such sale takes place on such day, the average of
the high bid and low asked prices, regular way, in either case as reported in
the principal consolidated transaction reporting system with respect to the
national securities exchange on which the Rights are listed or admitted to
trading.

          (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.

21
<PAGE>

          (c) Following the occurrence of a Triggering Event or upon any
exchange pursuant to Section 24, 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 or exchanged 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. The Rights Agent
shall have no duty or obligation with respect to this Section 14 and any other
Section of this Agreement relating to fractional shares unless and until it has
received specific instructions (and sufficient cash, if required) from the
Company with respect to its duties and obligations under such Sections.

     Section 15.  Rights of Action.  All rights of action in respect of this
                  ----------------
Agreement, except the rights of action vested in the Rights Agent pursuant to
Section 18 and Section 19 hereof, are vested in the respective registered
holders of the Rights Certificates (and, prior to the Distribution Date, the
registered holders of the Common Stock); and 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
will be entitled to specific performance of the obligations under, and
injunctive relief against actual or threatened violations of, the obligations
hereunder of any Person subject to this Agreement.

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

          (a) prior to the Distribution Date, the Rights will be transferable
only in connection with the transfer of the 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 office of the Rights Agent designated for such purposes, duly endorsed or
accompanied by a proper instrument of transfer and with the appropriate form of
assignment and the certificate contained therein duly completed and executed;

          (c) subject to Sections 6 and 7 hereof, the Company and the Rights
Agent may deem and treat the Person in whose name the Rights Certificate (or,
prior to the Distribution Date, the associated Common Stock certificate) is
registered as the absolute owner thereof and of the

22
<PAGE>

Rights evidenced thereby (notwithstanding any notations of ownership or writing
on the Rights Certificates or the associated Common Stock certificate made by
anyone other than the Company or the Rights Agent) for all purposes whatsoever,
and neither the Company nor the Rights Agent shall be affected by any notice to
the contrary; and

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

     Section 17.  Rights Certificate Holder Not Deemed a Shareholder.  No
                  --------------------------------------------------
holder, as such, of any Rights Certificate shall be entitled to vote, receive
dividends or be deemed for any purpose the holder of the Preferred 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 shareholder of the Company
or any right to vote for the election of directors or upon any matter submitted
to shareholders at any meeting thereof, or to give or withhold consent to any
corporate action, or to receive notice of meetings or other actions affecting
shareholders (except as provided in Section 25 hereof), or to receive dividends
or subscription rights, or otherwise, until the Right or Rights evidenced by
such Rights Certificate shall have been exercised in accordance with the
provisions hereof.

     Section 18.  Duties of Rights Agent.  The Rights Agent undertakes the
                  ----------------------
duties and obligations, and only the duties and obligations, expressly imposed
by this Agreement, and no implied duties or obligations, upon the following
terms and conditions, by all of which the Company and the holders of Rights
Certificates, by their acceptance thereof, shall be bound:

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

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

23
<PAGE>

a Vice President, the Treasurer or the Secretary of the Company and delivered to
the Rights Agent; and such certificate shall be full authorization and
protection to the Rights Agent and the Rights Agent shall incur no liability for
or in respect of any action taken, suffered or omitted in good faith by it under
the provisions of this Agreement in reliance upon such certificate.

          (c) The Rights Agent shall be liable hereunder only for its own gross
negligence and bad faith (as determined by a court of competent jurisdiction).
Anything to the contrary notwithstanding, in no event shall the Rights Agent be
liable for special, indirect, punitive, incidental or consequential loss or
damage of any kind whatsoever (including, but not limited to, lost profits),
even if the Rights Agent has been advised of the likelihood of such loss or
damage.

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

          (e) The Rights Agent shall not have any liability for, nor 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 change in the
exercisability of the Rights (including the Rights becoming null and void
pursuant to Section 7(d) hereof) or any adjustment required under the provisions
of Section 11 or 13 hereof or responsible for the manner, method, or amount of
any such adjustment or the ascertaining of the existence of facts that would
require any such adjustment (except with respect to the exercise of Rights
evidenced by 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
shares of Preferred Stock to be issued pursuant to this Agreement or any Rights
Certificate or as to whether any shares of Common Stock or shares of Preferred
Stock will, when so issued, be validly authorized and issued, fully paid and
non-assessable.

          (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 any
one of the Chairman of the Board, the President, a 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 such instructions shall be full
authorization and protection to the Rights Agent and the Rights Agent shall
incur no liability for or in respect of any action taken, suffered to be taken
or omitted to be taken by it in good faith in

24
<PAGE>

accordance with instructions of any such officer. The Rights Agent may
conclusively rely upon the most recent instructions provided to it in accordance
with this Section 18(g).

          (h) The Rights Agent and any shareholder, director, affiliate, officer
or employee of the Rights Agent may buy, sell or deal in any of the Rights or
other securities of the Company or become pecuniarily interested in any
transaction in which the Company may be interested, or contract with or lend
money to the Company or otherwise act as fully and freely as though it were not
Rights Agent under this Agreement.  Nothing herein shall preclude the Rights
Agent from acting in any other capacity for the Company or for any other Person
or 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 or any other person resulting from any
such act, default, neglect, or misconduct; in the selection and continued
employment thereof, absent gross negligence or bad faith as determined by a
court of competent jurisdiction.

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

          (k) If, with respect to any Rights Certificate surrendered to the
Rights Agent for exercise or transfer, the certificate attached to the form of
assignment or form of election to purchase, as the case may be, has either not
been 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.

     Section 19.  Compensation and Indemnification of the Rights Agent.
                  ----------------------------------------------------

          (a) The Company agrees to pay to the Rights Agent such compensation as
shall be agreed to in writing between the Company and the Rights Agent for all
services rendered by it hereunder and, from time to time, on demand of the
Rights Agent, its reasonable expenses incurred in the preparation, delivery,
administration, execution and any amendment of this Agreement and the exercise
and performance of its duties hereunder.  The Company also agrees to indemnify
the Rights Agent for, and to hold it harmless against, any loss, liability,
damage, judgment, fine, penalty, claim, demand, settlement, cost or expense,
incurred without gross negligence or bad faith (as determined by a court of
competent jurisdiction) on the part of the Rights Agent, for any action taken,
suffered or omitted by the Rights Agent in connection with the administration of
this Agreement, including without limitation the costs and expenses of defending
against any claim of liability in the premises.  The indemnity provided for
hereunder shall survive the expiration of the Rights and the termination of this
Agreement.

25
<PAGE>

          (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 the 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.

     Section 20.  Merger or Consolidation or Change of Name of Rights Agent.
                  ---------------------------------------------------------

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

     Section 21.  Change of Rights Agent.  The Rights Agent or any successor
                  ----------------------
Rights Agent may resign and be discharged from its duties under this Agreement
upon thirty (30) days' notice in writing mailed to the Company and to each
transfer agent of the Common Stock and the Preferred Stock by registered or
certified mail, and to the 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

26
<PAGE>

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 the registered holder of
any Rights Certificate may apply to any court of competent jurisdiction for the
appointment of a new Rights Agent. Any successor Rights Agent, whether appointed
by the Company or by such a court, shall be either (a) a Person organized and
doing business under the laws of the United States or of any other state of the
United States which is subject to supervision or examination by federal or state
authority and which has at the time of its appointment as Rights Agent a
combined capital and surplus of at least $50 million, or (b) an affiliate of
such Person. 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.

     Section 22.  Issuance of New Rights Certificates.  Notwithstanding any of
                  -----------------------------------
the provisions of this Agreement or of the Rights to the contrary, the Company
may, at its option, issue new Rights Certificates evidencing Rights in such form
as may be approved by its Board of Directors to reflect any adjustment or change
in the Purchase Price per share and the number or kind of 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 (other than upon exercise of a Right) 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 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, issue Rights
Certificates representing the appropriate number of Rights in connection with
such issuance or sale; provided, however, that (i) no such Rights Certificate
shall be issued if, and to the extent that, the Company shall be advised by
counsel that such issuance would create a significant risk of material adverse
tax consequences to the Company or the Person to whom such Rights Certificate
would be issued, and (ii) no such Rights Certificate shall be issued if, and to
the extent that, appropriate adjustment shall otherwise have been made in lieu
of the issuance thereof.

     Section 23.  Redemption.
                  ----------
          (a) The Board of Directors of the Company may, at its option, at any
time prior to the earlier of (i) the Close of Business on the tenth day
following the Stock Acquisition Date (or, if the Stock Acquisition Date shall
have occurred prior to the Record Date, the Close of Business on

27
<PAGE>

the tenth day following the Record Date), or (ii) the Close of Business on the
Final Expiration Date, redeem all but not less than all the then outstanding
Rights at a redemption price of $.01 per Right, as such amount may be
appropriately adjusted 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"). If, following the occurrence
of a Stock Acquisition Date and following the expiration of the Company's right
of redemption hereunder (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 thereafter a Beneficial Owner of 10%
or less of the outstanding shares of Common Stock, (ii) there are no other
Persons, immediately following the occurrence of the event described in clause
(i), who are Acquiring Persons, and (iii) the Board of Directors of the Company
shall so approve, then the Company's 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. The Company
may, at its option, pay the Redemption Price in cash, shares of Common Stock
(based on the current market price of the Common Stock at the time of
redemption) or any other form of consideration deemed appropriate by the Board
of Directors.

          (b) Immediately upon the action of the Board of Directors of the
Company ordering the redemption of the Rights, 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.  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 in the manner
set forth in Section 26; provided that the failure to give, or any defect in,
such notice shall not affect the validity of such redemption.  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.  Neither the
Company nor any of its Affiliates or Associates may redeem, acquire or purchase
for value any Rights at any time in any manner other than that specifically set
forth in Section 23 or 24, and other than in connection with the purchase,
acquisition or redemption of shares of Common Stock prior to the Distribution
Date.

     Section 24.  Exchange.
                  --------

          (a) The Board of Directors of the Company may, at its option, at any
time after any Person becomes an Acquiring Person, exchange all or part of the
then outstanding and exercisable Rights (which shall not include Rights that
have become null and void pursuant to the provisions of Section 7(d) hereof) for
shares of Common Stock at an exchange ratio of one share of Common Stock per
Right, appropriately adjusted to reflect any stock split, stock dividend or
similar transaction occurring after the date hereof (such exchange ratio being
hereinafter referred to as the "Exchange Ratio").  Notwithstanding the
foregoing, the Company's  Board of Directors shall not be empowered to effect
such exchange at any time after any Person (other than the Company, any
Subsidiary of the Company, any employee benefit plan of the Company or any such

28
<PAGE>

Subsidiary of the Company, any employee benefit plan of the Company or any such
Subsidiary, any entity holding Common Stock for or pursuant to the terms of any
such plan or any trustee, administrator or fiduciary of such a plan), together
with all Affiliates and Associates of such Person, becomes the Beneficial Owner
of 50% of more of the shares of Common Stock then outstanding.

          (b) Immediately upon the action of the Board of Directors of the
Company ordering the exchange of any Rights pursuant to subsection (a) of this
Section 24 and without any further action and without any notice, the right to
exercise such Rights shall terminate and the only right thereafter of the
holders of such Rights shall be to receive that number of shares of Common Stock
equal to the number of such Rights held by such holder multiplied by the
Exchange Ratio.  The Company shall promptly give notice of such exchange to the
Rights Agent and the holders of the Rights in the manner provided in Section 26;
provided, however, that the failure to give, or any defect in, such notice shall
not affect the validity of such exchange.  Any notice which is mailed in the
manner herein provided shall be deemed given, whether or not the holder receives
the notice.  Each such notice of exchange will state the method by which the
exchange of Common Stock for Rights will be effected and, in the event of any
partial exchange, the number of Rights which will be exchanged.  Any partial
exchange shall be effected pro rata based on the number of Rights (other than
Rights which have become void pursuant to the provisions of Section 7(d) hereof)
held by each holder of Rights.

          (c) In any exchange pursuant to this Section 24, the Company, at its
option, may substitute common stock equivalents (as defined in Section
11(a)(iii)) for shares of Common Stock exchangeable for Rights, at the initial
rate of one common stock equivalent for each share of Common Stock, as
appropriately adjusted to reflect adjustments in dividend, liquidation and
voting rights of common stock equivalents pursuant to the terms thereof, so that
each common stock equivalents pursuant to the terms thereof, so that each common
stock equivalent delivered in lieu of each share of Common Stock shall have
essentially the same dividend, liquidation and voting rights as one share of
Common Stock.

     Section 25.  Notice of Certain Events.
                  ------------------------

          (a) In case the Company shall propose, at any time after the
Distribution Date (i) to pay any dividend payable in stock of any class to the
holders of Preferred Stock or to make any other distribution to the holders of
Preferred Stock (other than a regular quarterly cash dividend out of earnings or
retained earnings) 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 Preferred
Stock), or (iv) to effect any consolidation or merger into or with, or to effect
any sale or other transfer (or to permit one or more of its subsidiaries to
effect any sale or other transfer), in one or more transactions, of more than
50% of the assets or earning power of the Company and its subsidiaries (taken as
a whole) to, any other Person, or (v) to effect the liquidation, dissolution or
winding up of the Company, then, in each such case, the Company shall give to
the Rights Agent and to each holder of Rights, to the extent feasible and in
accordance with Section 26 hereof, a notice of such

29
<PAGE>

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

          (b) In case any Triggering 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 26
hereof, a notice of the occurrence of such event which shall specify the event
and the consequences of the event to holders of Rights under Section 11(a)(ii)
hereof or Section 13, as the case may be, and (ii) all references in Section
25(a) to Preferred Stock shall be deemed thereafter to refer to Common Stock
and/or, if appropriate other securities.

          (c) Notwithstanding anything in this Agreement to the contrary, prior
to the Distribution Date a public filing by the Company with the Securities and
Exchange Commission shall constitute sufficient notice to the holders of
securities of the Company, including the Rights, for purposes of this Agreement
and no other notice need by given to such holders.

     Section 26.  Notices.  Notices or demands authorized by this Agreement to
                  -------
be given or made by the Rights Agent or by the holder of any Rights to or on the
Company shall be sufficiently given or made if sent by registered or certified
mail, postage prepaid, to the address of the Company indicated on the signature
page hereof or such other address as the Company shall specify in writing to the
Rights Agent.  Subject to the provisions of Section 21 hereof, any notice or
demand authorized by this Agreement to be given or made by the Company or by the
holder of any Rights to or on the Rights Agent shall be sufficiently given or
made if sent by first-class mail, postage prepaid, to the address of the Rights
Agent indicated on the signature page hereof or such other address as the Rights
Agent shall specify in writing to the Company.  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, prior to the Distribution Date, to the
holder of any certificate representing shares of Common Stock) shall be
sufficiently given or made if sent by first-class mail, postage prepaid, to the
address of such holder as shown on the registry books of the Company.

     Section 27.  Supplements and Amendments.  Prior to the Distribution Date,
                  --------------------------
the Company 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, the Company and the Rights Agent shall at any time and from
time to time, if the Company so directs, supplement or amend this Agreement
without the approval

30
<PAGE>

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, or (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 any such Person). Upon the delivery of a certificate from an
appropriate officer of the Company which states that the proposed supplement or
amendment is in compliance with the terms of this Section 27 the Rights Agent
shall execute such supplement or amendment. Prior to the Distribution Date, the
interests of the holders of Rights shall be deemed coincident with the interests
of the holders of shares of Common Stock.

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

     Section 29.  Determinations and Actions by the Board of Directors, etc.
                  ---------------------------------------------------------
For all purposes of this Agreement, any calculation of the number of shares of
Common Stock outstanding at any particular time, including for purposes of
determining the particular percentage of such outstanding shares of Common Stock
of which any Person is the Beneficial Owner, shall be made in accordance with
the last sentence of Rule 13d-3(d)(1)(i) of the General Rules and Regulations
under the Exchange Act as in effect on the date of this Agreement. The Board of
Directors of the Company shall have the exclusive power and authority to
administer this Agreement and to exercise all rights and powers specifically
granted to the Board or to the Company, or as may be necessary or advisable in
the administration of this Agreement, including, without limitation, the right
and power to (i) interpret the provisions of this Agreement, and (ii) make all
determinations deemed necessary or advisable for the administration of this
Agreement (including without limitation a determination to redeem or exchange or
not redeem or exchange the Rights or to amend the Agreement).  All such actions,
calculations, interpretations and determinations (including, for purposes of
clause (y) below, all omissions with respect to the foregoing) which are done or
made by the Board in good faith, shall (x) be final, conclusive and binding on
the Company, the Rights Agent, the holders of the Rights and all other persons,
and (y) not subject any director to any liability to the holders of the Rights.
The Rights Agent is authorized and protected in assuming that all acts of the
Company's Board of Directors were done in good faith.

     Section 30.  Benefits of this Agreement.  Nothing in this Agreement shall
                  --------------------------
be construed to give to any Person other than the Company, the Rights Agent and
the registered holders of the Rights Certificates (and, prior to the
Distribution Date, 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 Common Stock).

     Section 31.  Severability.  If any term, provision, covenant or restriction
                  ------------
of this Agreement is held by a court of competent jurisdiction or other
authority to be invalid, void or unenforceable, the remainder of the terms,
provisions, covenants and restrictions of this Agreement shall remain in

31
<PAGE>

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 determines in its good faith judgment that severing the invalid
language from this Agreement would materially and adversely affect the purpose
or effect of this Agreement, the right of redemption set forth in Section 23
hereof shall be reinstated (and notice thereof given to the Rights Agent) and
shall not expire until the Close of Business on the tenth day following the date
of such determination by the Board of Directors.

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

     Section 33.  Counterparts.  This Agreement may be executed in any number of
                  ------------
counterparts.  It shall not be necessary that the signature of or on behalf of
each party appears on each counterpart, but it shall be sufficient that the
signature of or on behalf of each party appears on one or more of the
counterparts.  All counterparts shall collectively constitute a single
agreement.  It shall not be necessary in any proof of this Agreement to produce
or account for more than a number of counterparts containing the respective
signatures of or on behalf of all of the parties.

32
<PAGE>

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

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


                                  NORTHWEST PIPE COMPANY


                                       /s/ Brian W. Dunham
                                  By:___________________________________________
                                       Brian W. Dunham, President

                                       12005 N. Burgard
                                       Portland, OR 97203
                                       Phone: 503-285-1400
                                       Fax: 503-240-6615


                                  CHASEMELLON SHAREHOLDER
                                  SERVICES, L.L.C.


                                       /s/ Dennis Treibel
                                  By:___________________________________________
                                       Dennis Treibel, Assistant Vice President

                                       520 Pike Street, Suite 1220
                                       Seattle, WA 98101
                                       Phone: 206-674-3030
                                       Fax: 206-674-3059

33
<PAGE>

                                                                       EXHIBIT A

                             ARTICLES OF AMENDMENT
                                      OF
                            NORTHWEST PIPE COMPANY

     Pursuant to the provisions of ORS 57.370, the undersigned corporation
executes the following Articles of Amendment to its Second Restated Articles of
Incorporation:

     1.   The name of the corporation is Northwest Pipe Company (the
"Corporation").

     2.   Effective upon filing these Articles of Amendment with the Secretary
of State of the State of Oregon, Article II of the Second Restated Articles of
Incorporation of the Corporation is amended to add a new Paragraph D as set
forth on Exhibit A attached hereto.

     3.   The amendment was duly adopted by the Board of Directors of the
Corporation on June 28, 1999 and shareholder approval was not required.

     4.   The amendment does not provide for the exchange, reclassification or
cancellation of issued shares.

     This Articles of Amendment are executed by the Corporation by its duly
authorized officer.

     DATED: June 28, 1999.

                                   NORTHWEST PIPE COMPANY


                                   By:____________________________________
                                      Brian W. Dunham, President

1
<PAGE>

                                                                       EXHIBIT A


     D.   The following series of Preferred Stock is hereby designated, which
series shall have the rights, preferences, privileges and limitations as set
forth below:

     Section 1.  Designation and Number of Shares.  The shares of such series
                 --------------------------------
shall be designated as "Series A Junior Participating Preferred Stock", and the
number of shares constituting such series shall be 150,000.  Such number of
shares of Series A Junior Participating Preferred Stock may be increased or
decreased by resolution of the Board of Directors; provided that no decrease
shall reduce the number of shares of Series A Junior Participating Preferred
Stock to a number less than the number of shares then outstanding plus the
number of shares issuable upon exercise or conversion of outstanding rights,
options or other securities issued by the Corporation.

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

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

1
<PAGE>

          (B) The Corporation shall declare a dividend or distribution on the
Series A Junior Participating Preferred Stock as provided in paragraph (A) of
this Section 2 immediately after it declares a dividend or distribution on the
Common Stock (other than a dividend payable in shares of Common Stock); provided
that, in the event no dividend or distribution shall have been declared on the
Common Stock during the period between any Quarterly Dividend Payment Date and
the next subsequent Quarterly Dividend Payment Date, a dividend of $1.00 per
share on the Series A Junior Participating Preferred Stock shall nevertheless be
payable on such subsequent Quarterly Dividend Payment Date.

          (C) Dividends shall begin to accrue and be cumulative on outstanding
shares of Series A Junior Participating Preferred Stock from the Quarterly
Dividend Payment Date next preceding the date of issue of such shares, unless
the date of issue of such shares is prior to the record date for the first
Quarterly Dividend Payment Date, in which case dividends on such shares shall
begin to accrue from the date of issue of such shares, or unless the date of
issue is a Quarterly Dividend Payment Date or is a date after the record date
for the determination of holders of shares of Series A Junior Participating
Preferred Stock entitled to receive a quarterly dividend and before such
Quarterly Dividend Payment Date, in either of which events such dividends shall
begin to accrue and be cumulative from such Quarterly Dividend Payment Date.
Accrued but unpaid dividends shall not bear interest.  Dividends paid on the
shares of Series A Junior Participating Preferred Stock in an amount less than
the total amount of such dividends at the time accrued and payable on such
shares shall be allocated pro rata on a share-by-share basis among all such
shares at the time outstanding.  The Board of Directors may fix a record date
for the determination of holders of shares of Series A Junior Participating
Preferred Stock entitled to receive payment of a dividend or distribution
declared thereon, which record date shall be not more than 60 days prior to the
date fixed for the payment thereof.

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

          (A) Subject to the provision for adjustment hereinafter set forth,
each share of Series A Junior Participating Preferred Stock shall entitle the
holder thereof to 100 votes on all matters submitted to a vote of the
shareholders of the Corporation.  In the event the Corporation 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 number of votes per share to which holders of shares
of Series A Junior Participating Preferred Stock were entitled immediately prior
to such event shall be adjusted by multiplying such number by a fraction the
numerator of which is the number of shares of Common Stock outstanding
immediately after such event and the denominator of which is the number of
shares of Common Stock that were outstanding immediately prior to such event.

          (B) Except as otherwise provided herein or by law, the holders of
shares of Series A Junior Participating Preferred Stock and the holders of
shares of Common Stock shall vote together as one class on all matters submitted
to a vote of shareholders of the Corporation.

2
<PAGE>

          (C)  (i)   If at any time dividends on any shares of Series A Junior
Participating Preferred Stock shall be in arrears in an amount equal to six
quarterly dividends thereon, the occurrence of such contingency shall mark the
beginning of a period (a "default period") that shall extend until such time
when all accrued and unpaid dividends for all previous quarterly dividends
periods and for the current quarterly dividend period on all shares of Series A
Junior Participating Preferred Stock then outstanding shall have been declared
and paid or set apart for payment.  During each default period, all holders of
the outstanding shares of Series A Junior Participating Preferred Stock together
with any other series of Preferred Stock then entitled to such a vote under the
terms of the Articles of Incorporation, voting as a separate class, shall be
entitled to elect two (2) members of the Board of Directors of the Corporation.

               (ii)  During any default period, such voting right of the holders
of Preferred Stock may be exercised initially at a special meeting called
pursuant to subparagraph (iii) of this Subsection 3(c) or at any annual meeting
of shareholders, and thereafter at annual meetings of shareholders. The absence
of a quorum of the holders of Common Stock shall not affect the exercise by the
holders of Preferred Stock of such voting right. At any meeting at which the
holders of Preferred Stock shall exercise such voting right initially during an
existing default period, they shall have the right, voting as a separate class,
to elect Directors to fill such vacancies, if any, in the Board of Directors as
may then exist up to two (2) Directors, or if such right is exercised at an
annual meeting, to elect two (2) Directors. If the number that may be so elected
at any special meeting does not amount to the required number, the holders of
the Preferred Stock shall have the right to make such increase in the number of
Directors as shall be necessary to permit the election by them of the required
number. After the holders of the Preferred Stock shall have exercised their
right to elect Directors in any default period and during the continuance of
such period, the number of Directors shall not be increased or decreased except
by vote of the holders of Preferred Stock as herein provided or pursuant to the
rights of any equity securities ranking senior to or pari passu with the Series
A Junior Participating Preferred Stock.

               (iii) Unless the holders of Preferred Stock shall, during an
existing default period, have previously exercised their right to elect
Directors, the Board of Directors may order, or any shareholder or shareholder
owning in the aggregate not less than ten percent (10%) of the total number of
shares of Preferred Stock outstanding, irrespective of series, may request, the
calling of a special meeting of the holders of Preferred Stock, which meeting
shall thereupon be called by the Chairman, President, a Vice President or the
Secretary of the Corporation. Notice of such meeting and of any annual meeting
at which holders of Preferred Stock are entitled to vote pursuant to this
Section 3(c)(iii) shall be given to each holder of record of Preferred Stock by
mailing a copy of such notice to him at his last address as the same appears on
the books of the Corporation. Such meeting shall be called for a time not
earlier than 10 days and not later than 60 days after such order or request,
such meeting may be called on a similar notice by any shareholder or
shareholders owning in the aggregate not less than ten percent (10%) of the
total number of shares of Preferred Stock outstanding. Notwithstanding the
provisions of this Section 3(c)(iii), no such special meeting shall be called
during the period within 60 days immediately preceding the date fixed for the
next annual meeting of shareholders.

3
<PAGE>

               (iv)  In any default period, the holders of Common Stock, and
other classes of stock of the Corporation, if applicable, shall continue to be
entitled to elect the whole number of Directors until the holders of Preferred
Stock shall have exercised their right to elect two (2) Directors voting as a
separate class, after the exercise of which right (x) the Directors so elected
by the holders of Preferred Stock shall continue in office until their
successors shall have been elected by such holders or until the expiration of
the default period, and (y) any vacancy in the Board of Directors may (except as
provided in Section 3(c)(ii) be filled by vote of a majority of the remaining
Directors elected by the class which elected the Director whose office shall
have become vacant. References in this Section 3(c)(iv) to Directors elected by
a particular class shall include Directors elected by such Directors to fill
vacancies as provided in clause (y) of the foregoing sentence.

          (D) Immediately upon the expiration of a default period, (x) the right
of the holders of Preferred Stock, as a separate class, to elect Directors shall
cease, (y) the term of any Directors elected by the holders of Preferred Stock,
as a separate class, shall terminate, and (z) the number of Directors shall be
such number as may be provided for in, or pursuant to, the Articles of
Incorporation or Bylaws irrespective of any increase made pursuant to the
provisions of Section 3(c)(ii) (such number being subject, however, to change
thereafter in any manner provided by law or in the Articles of Incorporation or
Bylaws).  Any vacancies in the Board of Directors effected by the provisions of
clauses (y) and (z) in the preceding sentence may be filled by a majority of the
remaining Directors, even though less than a quorum.

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

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

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

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

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

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

4
<PAGE>

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

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

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

     Section 5.  Reacquired Shares.  Any shares of Series A Junior Participating
                 -----------------
Preferred Stock purchased or otherwise acquired by the Corporation in any manner
whatsoever shall be retired and canceled promptly after the acquisition thereof.
All such shares shall upon their cancellation become authorized but unissued
shares of Preferred Stock without designation as to series and may be reissued
as part of a new series of Preferred Stock subject to the conditions and
restrictions on issuance set forth herein.

     Section 6.  Liquidation, Dissolution or Winding Up.
                 --------------------------------------

          (A) Upon any liquidation (voluntary or otherwise), dissolution or
winding up of the Corporation, no distribution shall be made to the holders of
shares of stock ranking junior (either as to dividends or upon liquidation,
dissolution or winding up) to the Series A Junior Participating Preferred Stock
unless, prior thereto, the holders of shares of Series A Junior Participating
Preferred Stock shall have received $1 per share, plus any unpaid dividends and
distributions thereon, whether or not declared, to the date of such payment (the
"Series A Liquidation Preference"). Following the payment of the full amount of
the Series A Liquidation Preference, no additional distributions shall be made
to the holders of Series A Junior Participating Preferred Stock unless, prior
thereto, the holders of shares of Common Stock shall have received an amount per
share (the "Common Adjustment") equal to the quotient obtained by dividing (i)
the Series A Liquidation Preference by (ii) 100 (as appropriately adjusted as
set forth in subparagraph (C) below to reflect such events as stock splits,
stock dividends and recapitalizations with respect to the Common Stock) (such
number in clause (ii) immediately above being referred to as the "Adjustment
Number").  Following the payment of the full amount of the Series A Liquidation
Preference and the Common Adjustment in respect of all outstanding shares of
Series A Junior Participating Preferred Stock and Common

5
<PAGE>

Stock, respectively, holders of Series A Junior Participating Preferred Stock
and holders of shares of Common stock shall receive their ratable and
proportionate share of the remaining assets to be distributed in the ratio of
the Adjustment Number to one (1) with respect to such Preferred Stock and Common
Stock, on a per share basis, respectively.

          (B) In the event, however, that there are not sufficient assets
available to permit payment in full of the Series A Liquidation Preference and
the liquidation preferences of all other series of preferred stock, if any,
which rank on a parity with the Series A Junior Participating Preferred Stock,
then such remaining assets shall be distributed ratably to the holders of such
parity shares in proportion to their respective liquidation preferences.  In the
event, however, that there are sufficient assets available to permit payment in
full of the Common Adjustment, then such remaining assets shall be distributed
ratably to the holders of Common Stock.

          (C) In the event the Corporation 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.

     Section 7.  Consolidation, Merger, etc.  In case the Corporation shall
                 --------------------------
enter into any consolidation, merger, combination or other transaction in which
the shares of Common Stock are exchanged for or changed into other stock or
securities, cash and/or any other property, then in any such case the shares of
Series A Junior Participating 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 Corporation 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 amount set forth in the preceding sentence with respect to the exchange or
change of shares of Series A Junior Participating Preferred Stock shall be
adjusted by multiplying such amount by a fraction the numerator of which is the
number of shares of Common Stock outstanding immediately after such event and
the denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event.

     Section 8.  Redemption.  The shares of Series A Junior Participating
                 ----------
Preferred Stock shall not be redeemable.

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

6
<PAGE>

     Section 10.  Fractional Shares.  Series A Junior Participating Preferred
                  -----------------
Stock may be issued in fractions of a share which shall entitle the holders, in
proportion to such holders fractional shares, to exercise voting rights, receive
dividends, participate in distributions and to have the benefit of all other
rights of holders of Series A Junior Participating Preferred Stock.

7
<PAGE>

                                                                       EXHIBIT B

                 SUMMARY OF RIGHTS TO PURCHASE PREFERRED STOCK


     On June 28, 1999, the Board of Directors of Northwest Pipe Company (the
"Company") declared a dividend of one preferred stock purchase right (a "Right")
for each outstanding share of common stock, par value $.01 per share (the
"Common Stock"), of the Company.  The dividend is payable to shareholders of
record on July 9, 1999 (the "Record Date").  Each Right entitles the registered
holder to purchase from the Company one one-hundredth of a share of Series A
Junior Participating Preferred Stock ("Preferred Stock") at a price of $83.00
per one one-hundredth share (the "Purchase Price"), subject to adjustment.  The
description and terms of the Rights are set forth in a Rights Agreement dated
June 28, 1999 (the "Rights Agreement") between the Company and ChaseMellon
Shareholder Services, L.L.C. as Rights Agent (the "Rights Agent").

     Until the earlier to occur of (i) 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
15% or more of the outstanding shares of Common Stock or (ii) 10 business days
(or such later date as the Board of Directors may determine) following the
commencement of a tender offer or exchange offer the consummation of which would
result in the beneficial ownership by a person of 15% or more of the outstanding
shares of Common Stock (the earlier of such dates being called the "Distribution
Date"), the Rights will be evidenced with respect to any shares of Common Stock
outstanding as of the Record Date, by the certificates representing the shares
of Common Stock together with a copy of this Summary of Rights.

     The Rights Agreement provides that, until the Distribution Date (or earlier
expiration of the Rights) the Rights will be transferred with and only with the
Common Stock.  Until the Distribution Date (or earlier expiration of the
Rights), new Common Stock certificates issued after the Record Date upon
transfer or new issuances of Common Stock will contain a notation incorporating
the Rights Agreement by reference.  Until the Distribution Date (or earlier
expiration of the Rights) the surrender for transfer of any certificates for
Common Stock outstanding as of the Record Date will also constitute the transfer
of the Rights associated with the Common Stock represented by such certificate.
As soon as practicable following the Distribution Date, separate certificates
evidencing the Rights ("Rights Certificates") will be mailed to holders of
record of the Common Stock as of the close of business on the Distribution Date
and, thereafter, the separate Rights Certificates alone will evidence the
Rights.

     The Rights are not exercisable until the Distribution Date.  The Rights
will expire at the close of business on June 28, 2009 (the "Final Expiration
Date"), unless the Final Expiration Date is advanced or extended or unless the
Rights are earlier redeemed or exchanged by the Company as described below.

     The Purchase Price payable, and the number of one one-hundredths of a share
of Preferred Stock or other securities or property issuable upon exercise of the
Rights are subject to adjustment

1
<PAGE>

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)
upon the grant to holders of the Preferred Stock of certain rights or warrants
to subscribe for or purchase 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).

     The number of outstanding Rights is subject to adjustment in the event of a
stock dividend on the Common Stock payable in shares of Common Stock or
subdivisions, consolidations or combinations of the Common Stock occurring, in
any such case, prior to the Distribution Date.

     Shares of Preferred Stock purchasable upon exercise of the Rights will not
be redeemable.  Each share of Preferred Stock will be entitled, when, as and if
declared, to a minimum preferential quarterly dividend payment of the greater of
(a) $1 per share, and (b) an amount equal to 100 times the dividend declared per
share of Common Stock.  In the event of liquidation, dissolution or winding up
of the Company, the holders of the Preferred Stock will be entitled to a minimum
preferential payment of the greater of (a) $1 per share (plus any accrued but
unpaid dividends), and (b) an amount equal to100 times the payment made per
share of Common Stock.  Each share of Preferred Stock will have 100 votes,
voting together with the Common Stock.  Finally, in the event of any merger,
consolidation or other transactions in which outstanding shares of Common Stock
are converted or exchanged, each share of Preferred Stock will be entitled to
receive 100 times the amount received per share of Common Stock.  These rights
are protected by customary antidilution provisions.

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

     In the event that any Person or group of affiliated or associated persons
becomes an Acquiring Person, each holder of a Right, other than Rights
beneficially owned by the Acquiring Person (which will become null and void),
will thereafter have the right to receive, upon exercise of a Right that number
of shares of Common Stock having a value equal to two times the exercise price
of the Right.

     In the event that, after a person or group has become an Acquiring Person,
the Company is acquired in a merger or other business combination transaction or
50% or more of the Company's assets or earning power is sold or transferred,
proper provision shall be made so that each holder of a Right (except Rights
that previously have been voided as set forth above) will thereafter have the
right to receive upon the exercise of a Right that number of shares of common
stock of the acquiring company having a market value equal to two times the
exercise price of the Right.

     At any time after a person or group of affiliated or associated persons
becomes an Acquiring Person and prior to the acquisition by such person or group
of 50% or more of the outstanding shares of Common Stock, the Board of Directors
of the Company may exchange the Rights (other than

2
<PAGE>

Rights owned by such person or group which have become void), in whole or in
part, at an exchange ratio of one share of Common Stock per Right (subject to
adjustment).

     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 shares will be issued and in lieu thereof,
an adjustment in cash will be made based on the current market price of the
Preferred Stock or the Common Stock.

     In general, the Company may redeem the Rights in whole, but not in part, at
any time until ten days after the date an Acquiring Person has become such, at a
price of $.01 per Right (payable in cash, Common Stock or other consideration
deemed appropriate by the Board of Directors).  After the redemption period has
expired, the Company's right of redemption may be reinstated if an Acquiring
Person reduces his beneficial ownership to 10% or less of the outstanding shares
of Common Stock in a transaction or series of transactions not involving the
Company and there are no other Acquiring Persons.  Immediately upon the action
of the Board of Directors of the Company ordering redemption of the Rights, the
Rights will terminate and the only right of the holders of Rights will be to
receive the $.01 redemption price.

     All of the provisions of the Rights Agreement may be amended by the Board
of Directors of the Company prior to the Distribution Date.  After the
Distribution Date, the provisions of the Rights Agreement may be amended by the
Board in order to cure any ambiguity, defect or inconsistency or to make any
other changes that do not adversely affect the interests of holders of Rights
(excluding the interests of any Acquiring Person).

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

     A copy of the Rights Agreement has been filed with the Securities and
Exchange Commission as an Exhibit to a Registration Statement on Form 8-A.  A
copy of the Rights Agreement is available free of charge from the Company.  This
summary description of the Rights does not purport to be complete and is
qualified in its entirety by reference to the Rights Agreement.

3
<PAGE>

                                                                       EXHIBIT C

                         [Form of Rights Certificate]



Certificate No. R   _____ Rights


                    NOT EXERCISABLE AFTER JUNE 28, 2009, OR
                EARLIER IF REDEEMED OR EXCHANGED BY THE COMPANY
              THE RIGHTS ARE SUBJECT TO REDEMPTION, AT THE OPTION
              OF THE COMPANY, AT $.01 PER RIGHT ON THE TERMS SET
                 FORTH IN THE RIGHTS AGREEMENT.  UNDER CERTAIN
                 CIRCUMSTANCES RIGHTS BENEFICIALLY OWNED BY AN
                       ACQUIRING PERSON OR AN AFFILIATE
              OR ASSOCIATE OF ANY SUCH PERSON (AS SUCH TERMS ARE
                   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(d) OF SUCH AGREEMENT.]*



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

                                      -1-
<PAGE>

                              Rights Certificate
                            NORTHWEST PIPE COMPANY


     This certifies that _________________, or registered assigns, is the
registered owner of the number of Rights set forth above, each of which entitles
the owner thereof, subject to the terms, provisions and conditions of the Rights
Agreement, dated as of June 28, 1999 (the "Rights Agreement"), between Northwest
Pipe Company, an Oregon corporation (the "Company"), and ChaseMellon Shareholder
Services, L.L.C. (the "Rights Agent"), to purchase from the Company at any time
prior to June 28, 2009 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 A Junior Participating Preferred
Stock, par value $.01 per share (the "Preferred Stock") of the Company, at a
purchase price of $83.00 per one one-hundredth 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 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 June 28, 1999,
based on the Preferred Stock as constituted at such date, and are subject to
adjustment upon the happening of certain events as provided in the Rights
Agreement.

     From and after the occurrence of an event described in Section 11(a)(ii) of
the Rights Agreement, the Rights evidenced by this Rights Certificate
beneficially owned by (i) an Acquiring Person or an Affiliate or Associate of
any such Person (as such terms are defined in the Rights Agreement), (ii) a
transferee of any such Acquiring Person, Associate or Affiliate, or (iii) under
certain circumstances specified in the Rights Agreement, a transferee of a
person who, concurrently with or after such transfer, became an Acquiring Person
or an Affiliate or Associate of an Acquiring Person 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 (as such term is defined in the Rights Agreement).

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

                                      -2-
<PAGE>

     This Rights Certificate, with or without other Rights Certificates, upon
surrender at the office or offices of the Rights Agent designated for such
purpose, may be exchanged for another Rights Certificate or Right Certificates
of like tenor and date evidencing Rights entitling the holder to purchase a like
aggregate number of one one-hundredths of a 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 time
period-may be extended pursuant to the Rights Agreement), and (ii) the Final
Expiration Date (as defined in the Rights Agreement).  After the expiration of
the redemption period, the Company's right of redemption may be reinstated if an
Acquiring Person reduces his beneficial ownership to 10% or less of the
outstanding shares of Common Stock in a transaction or series of transactions
not involving the Company, and such reinstatement is approved by the Company's
Board of Directors.

     Subject to the provisions of the Rights Agreement, the Board of Directors
of the Company may exchange the Rights (other than Rights owned by such
Acquiring Person which have become void), in whole or in part, at an exchange
ratio of one share of Common Stock per Right (subject to adjustment).

     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.

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

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

                                      -3-
<PAGE>

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


     Dated as of __________________, 19___.


ATTEST:                       NORTHWEST PIPE COMPANY


_________________________     By:____________________________________
                              Name:__________________________________
                              Title:_________________________________

Countersigned:


_________________________

_________________________

_________________________


By:______________________
     Authorized Signature

                                      -4-
<PAGE>

                 [Form of Reverse Side of Rights Certificate]



                              FORM OF ASSIGNMENT


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


FOR VALUE RECEIVED _________________________ hereby sells, assigns and
transfers unto__________________________________________________________________
________________________________________________________________________________
(Please print name and address of transferee)

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


Dated:  ___________________, 19___



                                             _____________________________
                                             Signature



Signature Guaranteed:

                                      -5-
<PAGE>

                                  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 Person (as such terms are defined pursuant to
the Rights Agreement);


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


Dated:________________, 19___            ____________________________________
                                         Signature



Signature Guaranteed:


                                    NOTICE
                                    ------

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

                                      -6-
<PAGE>

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

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


TO:  NORTHWEST PIPE COMPANY

     The undersigned hereby irrevocably elects to exercise _____ Rights
represented by this Rights Certificate to purchase the shares of Preferred Stock
issuable upon the exercise of the Rights (or such other securities of the
Company or of any other person 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 print name and address)


_______________________________________________________________________________

Please insert social security
or other identifying number:___________________________________________________

     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 print name and address)



_______________________________________________________________________________

Please insert social security
or other identifying number:___________________________________________________

Dated:____________, 19___

                              _________________________________________________
                              Signature

Signature Guaranteed:

                                      -7-
<PAGE>

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

     The undersigned hereby certifies by checking the appropriate boxes that:

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

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


Dated:_______________, 19___


                                  _________________________________________
                                  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.

                                      -8-


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