NELLCOR INC /DE/
8-A12G/A, 1995-07-13
ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS
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<PAGE>

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                   ----------

                                   FORM 8-A/A


              AMENDMENT NO. 1 TO REGISTRATION STATEMENT ON FORM 8-A
                FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES
                    PURSUANT TO SECTION 12(b) OR 12(g) OF THE
                         SECURITIES EXCHANGE ACT OF 1934

                                   ----------


                              NELLCOR INCORPORATED
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)



           DELAWARE                                         94-2789249
          (STATE OF                                      (I.R.S. EMPLOYER
INCORPORATION OR ORGANIZATION)                         IDENTIFICATION NUMBER)


                               4280 HACIENDA DRIVE
                          PLEASANTON, CALIFORNIA 94588
               (ADDRESS OF PRINCIPAL EXECUTIVE OFFICES) (ZIP CODE)


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

                                      None

     If this Form relates to the registration of a class of debt securities and
is effective upon filing pursuant to General Instruction A.(c)(1), please check
the following box.                                                           / /

     If this Form relates to the registration of a class of debt securities and
is to become effective simultaneously with the effectiveness of a concurrent
registration statement under the Securities Act of 1933 pursuant to General
Instruction A.(c)(2), please check the following box.                        / /

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


                         PREFERRED SHARE PURCHASE RIGHTS
                                (TITLE OF CLASS)


                                   Page 1 of 2

<PAGE>

ITEM 1.  DESCRIPTION OF REGISTRANT'S SECURITIES TO BE REGISTERED.

     A description of the Preferred Share Purchase Rights to be registered
hereunder is contained in Item 5 of the Registrant's Form 8-K Current Report
filed with the Securities and Exchange Commission on June 13, 1991 and is
incorporated herein by reference. This Amendment No. 1 to the Registrant's
Registration Statement is being filed solely to reflect the amendment and
restatement of the Rights Agreement with respect to the Preferred Share
Purchase Rights, included as Exhibit 2.1 hereto. The amendment and restatement
reflects the substitution of the First National Bank of Boston for Bank of
America NT & SA as rights agent.

ITEM 2.  EXHIBITS.

     Exhibit
     Number              Description
     ------              -----------

     1.1*                Specimen Right Certificate.

     2.1                 Rights Agreement, dated as of June 11, 1991, between
                         the Registrant and Bank of America NT & SA, as amended
                         and restated by the Rights Agreement, dated as of
                         September 1, 1992, between the Registrant and The First
                         National Bank of Boston.


     ____________________________
          *    Incorporated by reference to Exhibit 1 to the Registrant's Form
     8-K Current Report, filed with the Securities and Exchange Commission on
     June 13, 1991.

                                    SIGNATURE

     Pursuant to the requirements of Section 12 of the Securities Exchange Act
of 1934, the Registrant has duly caused this Amendment No. 1 to its Registration
Statement to be signed on its behalf by the undersigned, thereto duly
authorized.

Date:     July 13, 1995


                                  NELLCOR INCORPORATED


                                  By: /s/ Laureen DeBuono
                                      -----------------------------
                                      Laureen DeBuono
                                      Executive Vice President, Human Resources,
                                        General Counsel and Secretary



                                   Page 2 of 2



<PAGE>

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

                              NELLCOR INCORPORATED

                                       and

                        THE FIRST NATIONAL BANK OF BOSTON
                                  Rights Agent

                                Rights Agreement

                                September 1, 1992

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

<PAGE>

                                TABLE OF CONTENTS
                                                                         Page
                                                                         ----
Section 1.     Certain Definitions . . . . . . . . . . . . . . . . . . .   1

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

Section 3.     Issue of Right Certificates . . . . . . . . . . . . . . .   4

Section 4.     Form of Right Certificates. . . . . . . . . . . . . . . .   6

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

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

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

Section 8.     Cancellation and Destruction of Right Certificates. . . .   8

Section 9.     Availability of Preferred Shares. . . . . . . . . . . . .   9

Section 10.    Preferred Shares Record Date. . . . . . . . . . . . . . .   9

Section 11.    Adjustment of Purchase Price, Number of Shares or Number
               of Rights . . . . . . . . . . . . . . . . . . . . . . . .   9

Section 12.    Certificate of Adjusted Purchase Price or Number of
               Shares. . . . . . . . . . . . . . . . . . . . . . . . . .  16

Section 13.    Consolidation, Merger or Sale or Transfer of Assets or
               Earning Power . . . . . . . . . . . . . . . . . . . . . .  16

Section 14.    Fractional Rights and Fractional Shares . . . . . . . . .  19

Section 15.    Rights of Action. . . . . . . . . . . . . . . . . . . . .  20

Section 16.    Agreement of Right Holders. . . . . . . . . . . . . . . .  20

Section 17.    Right Certificate Holder Not Deemed a Stockholder . . . .  21

Section 18.    Concerning the Rights Agent . . . . . . . . . . . . . . .  21

Section 19.    Merger or Consolidation or Change of Name of Rights
               Agent . . . . . . . . . . . . . . . . . . . . . . . . . .  21

Section 20.    Duties of Rights Agent. . . . . . . . . . . . . . . . . .  22

                                       1.

<PAGE>
                                TABLE OF CONTENTS
                                   (CONTINUED)

                                                                         Page
                                                                         ----

Section 21.    Change of Rights Agent. . . . . . . . . . . . . . . . . .  24

Section 22.    Issuance of New Right Certificates. . . . . . . . . . . .  25

Section 23.    Redemption. . . . . . . . . . . . . . . . . . . . . . . .  25

Section 24.    Exchange. . . . . . . . . . . . . . . . . . . . . . . . .  26

Section 25.    Notice of Certain Events. . . . . . . . . . . . . . . . .  28

Section 26.    Notices . . . . . . . . . . . . . . . . . . . . . . . . .  29

Section 27.    Supplements and Amendments. . . . . . . . . . . . . . . .  29

Section 28.    Determination and Actions by the Board of Directors,
               etc.  . . . . . . . . . . . . . . . . . . . . . . . . . .  30

Section 29.    Successors. . . . . . . . . . . . . . . . . . . . . . . .  30

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

Section 31.    Severability. . . . . . . . . . . . . . . . . . . . . . .  30

Section 32.    Governing Law . . . . . . . . . . . . . . . . . . . . . .  31

Section 33.    Counterparts. . . . . . . . . . . . . . . . . . . . . . .  31

Section 34.    Descriptive Headings. . . . . . . . . . . . . . . . . . .  31

                                       2.

<PAGE>

                                RIGHTS AGREEMENT


     Agreement, dated as of September 1, 1992, between Nellcor Incorporated, a
Delaware corporation (the "Company"), and The First National Bank of Boston, a
national banking association (the "Rights Agent").

     The Board of Directors of the Company has authorized and declared a
dividend of one preferred share purchase right (a "Right") for each Common Share
(as hereinafter defined) of the Company outstanding at the close of business on
June 26, 1991 (the "Record Date"), each Right representing the right to purchase
one one-hundredth of a Preferred Share (as hereinafter defined), upon the terms
and subject to the conditions herein set forth, and has further authorized and
directed the issuance of one Right with respect to each Common Share that shall
become outstanding between the Record Date and the earliest of the Distribution
Date, the Redemption Date and the Final Expiration Date (as such terms are
hereinafter defined).

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

SECTION 1.     CERTAIN DEFINITIONS.  For purposes of this Agreement, the
following terms 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 Common Shares
of the Company then outstanding, but shall not include the Company, any
Subsidiary (as such term is hereinafter defined) of the Company, any employee
benefit plan of the Company or any Subsidiary of the Company, or any entity
holding Common Shares for or pursuant to the terms of any such plan.
Notwithstanding the foregoing, no Person shall become an "Acquiring Person" as
the result of an acquisition of Common Shares by the Company which, by reducing
the number of shares outstanding, increases the proportionate number of shares
beneficially owned by such Person to 15% or more of the Common Shares of the
Company then outstanding; PROVIDED, HOWEVER, that if a Person shall become the
Beneficial Owner of 15% or more of the Common Shares of the Company then
outstanding by reason of share purchases by the Company and shall, after such
share purchases by the Company, become the Beneficial Owner of any additional
Common Shares of the Company, then such Person shall be deemed to be an
"Acquiring Person."  Notwithstanding the foregoing, if the Incumbent Board of
Directors of the Company determines in good faith that a Person who would
otherwise be an "Acquiring Person," as defined pursuant to the foregoing
provisions of this paragraph (a), has become such inadvertently, and such Person
divests as promptly as practicable a sufficient number of Common Shares so that
such Person would no longer be an Acquiring Person, as defined pursuant to the
foregoing provisions of this paragraph (a), then such Person shall not be deemed
to be an "Acquiring Person" for any purposes of this Agreement.

                                       1.

<PAGE>

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

               (c)  A Person shall be deemed the "BENEFICIAL OWNER" of and shall
be deemed to "beneficially own" any securities:

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

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

                    (iii)  which are beneficially owned, directly or indirectly,
          by any other Person with which such Person or any of such Person's
          Affiliates or Associates has any agreement, arrangement or
          understanding (other than customary agreements with and between
          underwriters and selling group members with respect to a bona fide
          public offering of securities) for the purpose of acquiring, holding,
          voting (except to the extent contemplated by the proviso to
          Section 1(c)(ii)(B)) or disposing of any securities of the Company.

Notwithstanding anything in this definition of Beneficial Ownership to the
contrary, the phrase, "then outstanding," when used with reference to a Person's
Beneficial Ownership of securities of the Company, shall mean the number of such
securities then issued and outstanding together with the number of such
securities not then actually issued and outstanding which such Person would be
deemed to own beneficially hereunder.

                                       2.

<PAGE>

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

               (e)  "CHANGE OF CONTROL" shall mean:

                    (i)    The acquisition (other than from the Company) by any
          person, entity or "group," within the meaning of Section 13(d)(3) or
          14(d)(2) of the Exchange Act, (excluding, for this purpose, the
          Company or its subsidiaries, or any employee benefit plan of the
          Company or its subsidiaries which acquires beneficial ownership of
          voting securities of the Company) of beneficial ownership, (within the
          meaning of Rule 13d-3 promulgated under the Exchange Act) of 50% or
          more of either the then outstanding Common Shares or the combined
          voting power of the Company's then outstanding voting securities
          entitled to vote generally in the election of directors; or

                    (ii)   Individuals who, as of the date hereof, constitute
          the Board (as of the date hereof the "Incumbent Board") cease for any
          reason to constitute at least a majority of the Board, provided that
          any person becoming a director subsequent to the date hereof whose
          election, or nomination for election by the Company's stockholders,
          was approved by a vote of at least a majority of the directors then
          comprising the Incumbent Board (other than an Affiliate or Associate
          of an Acquiring Person) shall be, for purposes of this Agreement,
          considered as though such person were a member of the Incumbent Board;
          or

                    (iii)  Approval by the stockholders of the Company of a
          reorganization, merger, or consolidation, in each case, with respect
          to which persons who were the stockholders of the Company immediately
          prior to such reorganization, merger or consolidation do not
          immediately thereafter, own more than 50% of the combined voting power
          entitled to vote generally in the election of directors of the
          reorganized, merged or consolidated company's then outstanding voting
          securities, or a liquidation or dissolution of the Company or of the
          sale of all or substantially all of the assets of the Company.

               (f)  "CLOSE OF BUSINESS" on any given date shall mean 5:00 p.m.,
Boston time, on such date; provided, however, that if such date is not a
Business Day it shall mean 5:00 p.m., Boston time, on the next succeeding
Business Day.

               (g)  "COMMON SHARES" when used with reference to the Company
shall mean the shares of common stock, par value $.001 per share, of the
Company.  "Common Shares" when used with reference to any Person other than the
Company shall mean the capital stock (or equity interest) with the greatest
voting power of such other Person or, if such other Person is a Subsidiary of
another Person, the Person or Persons which ultimately control such first-
mentioned Person.

               (h)  "DISTRIBUTION DATE" shall have the meaning set forth in
Section 3 hereof.

                                       3.

<PAGE>


               (i)  "FINAL EXPIRATION DATE" shall have the meaning set forth in
Section 7 hereof.

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

               (k)  "PREFERRED SHARES" shall mean shares of Series A Junior
Participating Preferred Stock, par value $.001 per share, of the Company having
the rights, privileges and preferences set forth in the Form of Certificate of
Determination of Preferences attached to this Agreement as Exhibit A.

               (l)  "REDEMPTION DATE" shall have the meaning set forth in
Section 7 hereof.

               (m)  "SHARES ACQUISITION DATE" shall mean the first date of
public announcement by the Company or an Acquiring Person that an Acquiring
Person has become such.

               (n)  "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 interest is owned, directly or indirectly, by such Person.

SECTION 2.     APPOINTMENT OF RIGHTS AGENT.  The Company hereby appoints the
Rights Agent to act as agent for the Company and the holders of the Rights (who,
in accordance with Section 3 hereof, shall prior to the Distribution Date also
be the holders of the Common Shares) in accordance with the terms and conditions
hereof, and the Rights Agent hereby accepts such appointment.  The Company may
from time to time appoint such co-Rights Agents as it may deem necessary or
desirable.

SECTION 3.     ISSUE OF RIGHT CERTIFICATES.

               (a)  Until the earlier of (i) the tenth day after the Shares
Acquisition Date or (ii) the tenth business day (or such later date as may be
determined by action of the Board of Directors prior to such time as any Person
becomes an Acquiring Person) after the date of the commencement (determined in
accordance with Rule 14d-2 under the Exchange Act) by any Person (other than the
Company, any Subsidiary of the Company, any employee benefit plan of the Company
or of any Subsidiary of the Company or any entity holding Common Shares for or
pursuant to the terms of any such plan) of, or of the first public announcement
of the intention of any Person (other than the Company, any Subsidiary of the
Company, any employee benefit plan of the Company or of any Subsidiary of the
Company or any entity holding Common Shares for or pursuant to the terms of any
such plan) to commence, a tender or exchange offer the consummation of which
would result in any Person becoming the Beneficial Owner of Common Shares
aggregating 15% or more of the then outstanding Common Shares (including any
such date which is after the date of this Agreement and prior to the issuance of
the Rights, the earlier of such dates being herein referred to as the
"Distribution Date"), (x) the Rights will be evidenced by the certificates for
Common Shares registered in the names of the

                                       4.

<PAGE>

holders thereof (which certificates shall also be deemed to be Right
Certificates) and not by separate Right Certificates, and (y) the Rights (and
the right to receive Right Certificates therefor) will be transferable only in
connection with the transfer of Common Shares.  As soon as practicable after the
Distribution Date, the Company will prepare and execute, the Rights Agent will
countersign, and the Company will send or cause to be sent (and the Rights Agent
will, if requested, send) by first-class, insured, postage-prepaid mail, to each
record holder of Common Shares as of the close of business on the Distribution
Date, at the address of such holder shown on the records of the Company, a Right
Certificate, in substantially the form of Exhibit B hereto (a "Right
Certificate"), evidencing one Right for each Common Share so held.  As of the
Distribution Date, the Rights will be evidenced solely by such Right
Certificates.

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

               (c)  Certificates for Common Shares which become outstanding
(including, without limitation, reacquired Common Shares referred to in the last
sentence of this paragraph (c)) after the Record Date but prior to the earliest
of the Distribution Date, the Redemption Date or the Final Expiration Date shall
have impressed on, printed on, written on or otherwise affixed to them the
following legend:

     This certificate also evidences and entitles the holder hereof to
     certain rights as set forth in a Rights Agreement between Nellcor
     Incorporated and The First National Bank of Boston, dated as of
     September 1, 1992, as amended from time to time (the "Rights
     Agreement"), the terms of which are hereby incorporated herein by
     reference and a copy of which is on file at the principal executive
     offices of Nellcor Incorporated.  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.  Nellcor Incorporated will mail to the holder of this
     certificate a copy of the Rights Agreement without charge after
     receipt of a written request therefor.  As described in the Rights
     Agreement, Rights issued to any Person who becomes an Acquiring Person
     (as defined in the Rights Agreement) shall become null and void.

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

                                       5.

<PAGE>

In the event that the Company purchases or acquires any Common Shares after the
Record Date but prior to the Distribution Date, any Rights associated with such
Common Shares shall be deemed cancelled and retired so that the Company shall
not be entitled to exercise any Rights associated with the Common Shares which
are no longer outstanding.

SECTION 4.     FORM OF RIGHT CERTIFICATES.  The Right Certificates (and the form
of election to purchase Preferred Shares, the form of assignment and the form of
certification to be printed on the reverse thereof) shall be substantially the
same as Exhibit B hereto and may have such marks of identification or
designation and such legends, summaries or endorsements printed thereon as the
Company may deem appropriate and as are not inconsistent with the provisions of
this Agreement, or as may be required to comply with any applicable law or with
any rule or regulation made pursuant thereto or with any rule or regulation of
any stock exchange on which the Rights may from time to time be listed, or to
conform to usage.  Subject to the provisions of Section 22 hereof, the Right
Certificates shall entitle the holders thereof to purchase such number of one
one-hundredths of a Preferred Share as shall be set forth therein at the price
per one one-hundredth of a Preferred Share set forth therein (the "Purchase
Price"), but the number of such one one-hundredths of a Preferred Share and the
Purchase Price shall be subject to adjustment as provided herein.

SECTION 5.     COUNTERSIGNATURE AND REGISTRATION.  The Right Certificates shall
be executed on behalf of the Company by its Chairman of the Board, its Chief
Executive Officer, its President, its Vice Chairman of the Board, its Chief
Financial Officer, or any of its Vice Presidents, either manually or by
facsimile signature, shall have affixed thereto the Company's seal or a
facsimile thereof, and shall be attested by the Secretary or an Assistant
Secretary of the Company, either manually or by facsimile signature.  The Right
Certificates shall be manually countersigned by the Rights Agent and shall not
be valid for any purpose unless countersigned.  In case any officer of the
Company who shall have signed any of the Right Certificates shall cease to be
such officer of the Company before countersignature by the Rights Agent and
issuance and delivery by the Company, such Right Certificates, nevertheless, may
be countersigned by the Rights Agent and issued and delivered by the Company
with the same force and effect as though the person who signed such Right
Certificates had not ceased to be such officer of the Company; and any Right
Certificate may be signed on behalf of the Company by any person who, at the
actual date of the execution of such Right Certificate, shall be a proper
officer of the Company to sign such Right Certificate, although at the date of
the execution of this Rights Agreement any such person was not such an officer.

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

SECTION 6.     TRANSFER, SPLIT UP, COMBINATION AND EXCHANGE OF RIGHT
CERTIFICATES; MUTILATED, DESTROYED, LOST OR STOLEN RIGHT CERTIFICATES.  Subject
to the provisions of Section 14 hereof, at any time after the close of business
on the Distribution Date, and at or

                                       6.

<PAGE>

prior to the close of business on the earlier of the Redemption Date or the
Final Expiration Date, any Right Certificate or Right Certificates (other than
Right Certificates representing Rights that have become void pursuant to
Section 11(a)(ii) hereof or that have been exchanged pursuant to Section 24
hereof) may be transferred, split up, combined or exchanged for another Right
Certificate or Right Certificates, entitling the registered holder to purchase a
like number of one one-hundredths of a Preferred Share as the Right Certificate
or Right Certificates surrendered then entitled such holder to purchase.  Any
registered holder desiring to transfer, split up, combine or exchange any Right
Certificate or Right Certificates shall make such request in writing delivered
to the Rights Agent, and shall surrender the Right Certificate or Right
Certificates to be transferred, split up, combined or exchanged at the office of
the Rights Agent designated for such purpose.  Thereupon the Rights Agent shall
countersign and deliver to the person entitled thereto a Right Certificate or
Right Certificates, as the case may be, as so requested.  The Company may
require payment of a sum sufficient to cover any tax or governmental charge that
may be imposed in connection with any transfer, split up, combination or
exchange of Right Certificates.

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

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

               (a)  The registered holder of any Right Certificate may exercise
the Rights evidenced thereby (except as otherwise provided herein) in whole or
in part at any time after the Distribution Date upon surrender of the Right
Certificate, with the form of election to purchase on the reverse side thereof
duly executed, to the Rights Agent at the office of the Rights Agent designated
for such purpose, together with payment of the Purchase Price for each one one-
hundredth of a Preferred Share (or such other number of shares or other
securities) as to which the Rights are exercised, at or prior to the earliest of
(i) the close of business on June 26, 2001 (the "Final Expiration Date"),
(ii) the time at which the Rights are redeemed as provided in Section 23 hereof
(the "Redemption Date"), or (iii) the time at which such Rights are exchanged as
provided in Section 24 hereof.

               (b)  The Purchase Price for each one one-hundredth of a Preferred
Share pursuant to the exercise of a Right shall initially be $90.00, shall be
subject to adjustment from time to time as provided in Sections 11 and 13 hereof
and shall be payable in lawful money of the United States of America in
accordance with paragraph (c) below.

               (c)  Upon receipt of a Right Certificate representing exercisable
Rights, with the form of election to purchase duly executed, accompanied by
payment of the Purchase Price

                                       7.

<PAGE>

for the shares to be purchased and an amount equal to any applicable transfer
tax required to be paid by the holder of such Right Certificate in accordance
with Section 9 hereof by certified check, cashier's check, bank draft or money
order payable to the order of the Company, the Rights Agent shall thereupon
promptly (i) (A) requisition from any transfer agent for the Preferred Shares
certificates for the number of Preferred Shares to be purchased and the Company
hereby irrevocably authorizes its transfer agent to comply with all such
requests, or (B) requisition from the depositary agent depositary receipts
representing such number of one one-hundredths of a Preferred Share as are to be
purchased (in which case certificates for the Preferred Shares represented by
such receipts shall be deposited by the transfer agent with the depositary
agent) and the Company hereby directs the depositary agent to comply with such
request, (ii) when appropriate, requisition from the Company the amount of cash
to be paid in lieu of issuance of fractional shares in accordance with
Section 14 hereof, (iii) after receipt of such certificates or depositary
receipts, cause the same to be delivered to or upon the order of the registered
holder of such Right Certificate, registered in such name or names as may be
designated by such holder and (iv) when appropriate, after receipt, deliver such
cash to or upon the order of the registered holder of such Right Certificate.

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

               (e)  The Company covenants and agrees that it will cause to be
reserved and kept available out of its authorized and unissued Preferred Shares
or any Preferred Shares held in its treasury, the number of Preferred Shares
that will be sufficient to permit the exercise in full of all outstanding Rights
in accordance with this Section 7.

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

SECTION 8.     CANCELLATION AND DESTRUCTION OF RIGHT CERTIFICATES.  All Right
Certificates surrendered for the purpose of exercise, transfer, split up,
combination or exchange shall, if surrendered to the Company or to any of its
agents, be delivered to the Rights Agent for cancellation or in cancelled form,
or, if delivered or surrendered to the Rights Agent, shall be cancelled by it,
and no Right Certificates shall be issued in lieu thereof except as expressly
permitted by any of the provisions of this Rights Agreement.  The Company shall
deliver to the Rights Agent for cancellation and retirement, and the Rights
Agent shall so cancel and retire, any other Right Certificate purchased or
acquired by the Company otherwise than upon the

                                       8.

<PAGE>

exercise thereof.  The Rights Agent shall deliver all cancelled Right
Certificates to the Company, or shall, at the written request of the Company,
destroy such cancelled Right Certificates, and in such case shall deliver a
certificate of destruction thereof to the Company.

SECTION 9.     AVAILABILITY OF PREFERRED SHARES.  The Company covenants and
agrees that it will take all such action as may be necessary to ensure that all
Preferred Shares delivered upon exercise of Rights shall, at the time of
delivery of the certificates for such Preferred Shares (subject to payment of
the Purchase Price), be duly and validly authorized and issued and fully paid
and nonassessable shares.

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

SECTION 10.    PREFERRED SHARES RECORD DATE.  Each person in whose name any
certificate for Preferred Shares or other securities is issued upon the exercise
of Rights shall for all purposes be deemed to have become the holder of record
of the Preferred Shares or other securities represented thereby on, and such
certificate shall be dated, the date upon which the Right Certificate evidencing
such Rights was duly surrendered with the forms of election and certification
duly executed and payment of the Purchase Price (and any applicable transfer
taxes) was made; PROVIDED, HOWEVER, that if the date of such surrender and
payment is a date upon which the Preferred Shares or other securities transfer
books of the Company are closed, such person shall be deemed to have become the
record holder of such shares on, and such certificate shall be dated, the next
succeeding Business Day on which the Preferred Shares or other securities
transfer books of the Company are open.  Prior to the exercise of the Rights
evidenced thereby, the holder of a Right Certificate, as such, shall not be
entitled to any rights of a holder of Preferred 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 OF SHARES OR NUMBER OF
RIGHTS.  The Purchase Price, the number of Preferred 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 Shares
          payable in Preferred Shares,

                                       9.

<PAGE>

          (B) subdivide the outstanding Preferred Shares, (C) combine the
          outstanding Preferred Shares into a smaller number of Preferred Shares
          or (D) issue any shares of its capital stock in a reclassification of
          the Preferred Shares (including any such reclassification in
          connection with a consolidation or merger in which the Company is the
          continuing or surviving corporation), except as otherwise provided in
          this Section 11(a), the Purchase Price in effect at the time of the
          record date for such dividend or of the effective date of such
          subdivision, combination or reclassification, and the number and kind
          of shares of capital stock issuable on such date, shall be
          proportionately adjusted so that the holder of any Right exercised
          after such time shall be entitled to receive the aggregate number and
          kind of shares of capital stock which, if such Right had been
          exercised immediately prior to such date and at a time when the
          Preferred Shares transfer books of the Company were open, he would
          have owned upon such exercise and been entitled to receive by virtue
          of such dividend, subdivision, combination or reclassification;
          PROVIDED, HOWEVER, that in no event shall the consideration to be paid
          upon the exercise of one Right be less than the aggregate par value of
          the shares of capital stock of the Company issuable upon exercise of
          one Right.  If an event occurs which would require an adjustment under
          both Section 11(a)(i) and Section 11(a)(ii), the adjustment provided
          for in this Section 11(a)(i) shall be in addition to, and shall be
          made prior to any adjustment required pursuant to Section 11(a)(ii).

                    (ii)   Subject to Section 24 of this Agreement, in the event
          any Person shall become an Acquiring Person, each holder of a Right
          shall, for a period of 60 days after the expiration or termination of
          the redemption option set forth in Section 23(b) (provided that, if at
          any time prior to the expiration or termination of the Rights there
          shall be a temporary restraining order, a preliminary injunction, an
          injunction, or temporary suspension by the Board of Directors, or
          similar obstacle to exercise of the Rights (the "Injunction") which
          prevents exercise of the Rights, a new 60 day period shall commence on
          the date the Injunction is removed), have a right to receive, upon
          exercise thereof at a price equal to the then current Purchase Price
          multiplied by the number of one one-hundredths of a Preferred Share
          for which a Right is then exercisable, in accordance with the terms of
          this Agreement and in lieu of Preferred Shares, such number of Common
          Shares of the Company as shall equal the result obtained by
          (A) multiplying the then current Purchase Price by the number of one
          one-hundredths of a Preferred Share for which a Right is then
          exercisable and dividing that product by (B) 50% of the then current
          per share market price of the Company's Common Shares (determined
          pursuant to Section 11(d) hereof) on the date such Person became an
          Acquiring Person; 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).  In the event that any Person shall become
          an Acquiring Person and the Rights shall then be outstanding, the
          Company shall not take any action which would eliminate or diminish
          the benefits intended to be afforded by the Rights.

                                       10.

<PAGE>

               Notwithstanding anything in this Agreement to the contrary, from
          and after the time any Person becomes an Acquiring Person, any Rights
          beneficially owned by (i) such Acquiring Person or an Associate or
          Affiliate of such Acquiring Person, (ii) a transferee of such
          Acquiring Person (or of any such Associate or Affiliate) who becomes a
          transferee after the Acquiring Person became such, or (iii) a
          transferee of such Acquiring Person (or of any such Associate or
          Affiliate) who becomes a transferee prior to or concurrently with the
          Acquiring Person's becoming such and receives such Rights pursuant to
          either (A) a transfer (whether or not for consideration) from the
          Acquiring Person to holders of equity interests in such Acquiring
          Person or to any Person with whom the Acquiring Person has any
          continuing agreement, arrangement or understanding regarding the
          transferred Rights or (B) a transfer which the Board of Directors of
          the Company has determined is part of a plan, arrangement or
          understanding which has as a primary purpose or effect the avoidance
          of this Section 11(a)(ii), 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 insure that the provisions of this Section 11(a)(ii) are
          complied with, but shall have no liability to any holder of Right
          Certificates or other Person as a result of its failure to make any
          determinations with respect to an Acquiring Person or its Affiliates,
          Associates or transferees hereunder.  No Right Certificate shall be
          issued at any time upon the transfer of any Rights to an Acquiring
          Person whose Rights would be void pursuant to the preceding sentence
          or any Associate or Affiliate thereof or to any nominee of such
          Acquiring Person, Associate or Affiliate, and any Right Certificate
          delivered to the Rights Agent for transfer to an Acquiring Person
          whose Rights would be void pursuant to the preceding sentence shall be
          cancelled.

                    (iii)  In the event that there shall not be sufficient
          Common Shares issued but not outstanding or authorized but unissued to
          permit the exercise in full of the Rights in accordance with the
          foregoing subparagraph (ii), the Board of Directors, in the event the
          Rights become so exercisable and if the Board of Directors determine
          that such action is necessary or appropriate and not contrary to the
          interests of the holders of Rights,  may, but shall not be required
          to, with respect to each Right (A) take all such action as may be
          necessary to authorize additional Common Shares for issuance upon
          exercise of the Rights, or (B) pay cash in an amount equal to the
          Purchase Price, in lieu of issuing Common Shares and requiring payment
          therefor, or (C) issue debt or equity securities (including, without
          limitation, shares, or fractions of shares, of preferred stock,
          including Preferred Shares, which the Board of Directors has deemed to
          have the same value as Common Shares) or a combination thereof, having
          a value equal to the Current Value of the Common Shares (as defined
          hereinafter), where the value of such securities shall be determined
          by a nationally recognized investment banking firm selected by the
          Board of Directors of the Company, and require the payment of the
          Purchase Price, or (D) deliver any combination of cash, property,
          Common Shares, Preferred Shares and/or other securities having a value
          equal to the Current Value, and require payment of all or any
          requisite portions of the Purchase Price.  The Current Value shall be
          the product of the current market price per share of Common Shares
          (determined pursuant to Section

                                       11.

<PAGE>

          11(d) on the date of the occurrence of the event described above in
          subparagraph(ii)) multiplied by the number of Common Shares for which
          the Right otherwise would be exercisable if there were sufficient
          shares available.  To the extent that the Company determines that some
          action need be taken pursuant to clauses (A), (B), (C) or (D) of this
          Section 11(a)(iii), the Board of Directors may temporarily suspend the
          exercisability of the Rights for a period of up to 45 days following
          the date on which the event described in Section 11(a)(ii) shall have
          occurred, in order to seek any authorization of additional Common
          Shares and/or to decide the appropriate form of distribution to be
          made pursuant to the above provision 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.

               (b)  In case the Company shall fix a record date for the issuance
of rights, options or warrants to all holders of Preferred Shares entitling them
(for a period expiring within 45 calendar days after such record date) to
subscribe for or purchase Preferred Shares (or shares having the same rights,
privileges and preferences as the Preferred Shares ("equivalent preferred
shares")) or securities convertible into Preferred Shares or equivalent
preferred shares at a price per Preferred Share or equivalent preferred share
(or having a conversion price per share, if a security convertible into
Preferred Shares or equivalent preferred shares) less than the then current per
share market price of the Preferred Shares (as defined in Section 11(d)) on such
record date, the Purchase Price to be in effect after such record date shall be
determined by multiplying the Purchase Price in effect immediately prior to such
record date by a fraction, the numerator of which shall be the number of
Preferred Shares outstanding on such record date plus the number of Preferred
Shares which the aggregate offering price of the total number of Preferred
Shares and/or equivalent preferred shares so to be offered (and/or the aggregate
initial conversion price of the convertible securities so to be offered) would
purchase at such current market price and the denominator of which shall be the
number of Preferred Shares outstanding on such record date plus the number of
additional Preferred Shares and/or equivalent preferred shares to be offered for
subscription or purchase (or into which the convertible securities so to be
offered are initially convertible); PROVIDED, HOWEVER, that in no event shall
the consideration to be paid upon the exercise of one Right be less than the
aggregate par value of the shares of capital stock of the Company issuable upon
exercise of one Right.  In case such subscription price may be paid in a
consideration part or all of which shall be in a form other than cash, the value
of such consideration shall be as determined in good faith by the Board of
Directors of the Company, whose determination shall be described in a statement
filed with the Rights Agent.  Preferred Shares owned by or held for the account
of the Company 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, options or warrants are not so
issued, the Purchase Price shall be adjusted to be the Purchase Price which
would then be in effect if such record date had not been fixed.

               (c)  In case the Company shall fix a record date for the making
of a distribution to all holders of the Preferred Shares (including any such
distribution made in connection with a consolidation or merger in which the
Company is the continuing or surviving corporation) of evidences of indebtedness
or assets (other than a regular quarterly cash dividend or a dividend

                                       12.

<PAGE>

payable in Preferred Shares) or subscription rights or warrants (excluding those
referred to in Section 11(b) hereof), the Purchase Price to be in effect after
such record date shall be determined by multiplying the Purchase Price in effect
immediately prior to such record date by a fraction, the numerator of which
shall be the then current per share market price of the Preferred Shares (as
defined in Section 11(d)) on such record date, less the fair market value (as
determined in good faith by the Board of Directors of the Company, whose
determination shall be described in a statement filed with the Rights Agent) of
the portion of the assets or evidences of indebtedness so to be distributed or
of such subscription rights or warrants applicable to one Preferred Share and
the denominator of which shall be such current per share market price of the
Preferred Shares; PROVIDED, HOWEVER, that in no event shall the consideration to
be paid upon the exercise of one Right be less than the aggregate par value of
the shares of capital stock of the Company to be issued upon exercise of one
Right.  Such adjustments shall be made successively whenever such a record date
is fixed; and in the event that such distribution is not so made, the Purchase
Price shall again be adjusted to be the Purchase Price which would then be in
effect if such record date had not been fixed.

               (d)  (i)    For the purpose of any computation hereunder, the
          "current per share market price" of any security (a "Security" for the
          purpose of this Section 11(d)(i)) on any date shall be deemed to be
          the average of the daily closing prices per share of such Security for
          the 30 consecutive Trading Days (as such term is hereinafter defined)
          immediately prior to such date; PROVIDED, HOWEVER, that in the event
          that the current per share market price of the Security is determined
          during a period following the announcement by the issuer of such
          Security of (A) a dividend or distribution on such Security payable in
          shares of such Security or securities convertible into such shares, or
          (B) any subdivision, combination or reclassification of such Security
          or securities convertible into such shares, or (C) any subdivision,
          combination or reclassification of such Security and prior to the
          expiration of 30 Trading Days after the ex-dividend date for such
          dividend or distribution, or the record date for such subdivision,
          combination or reclassification, then, and in each such case, the
          current per share market price shall be appropriately adjusted to
          reflect the current market price per share equivalent of such
          Security.  The closing price for each day shall be the last sale
          price, regular way, or, in case no such sale takes place on such day,
          the average of the closing bid and asked prices, regular way, in
          either case as reported in the principal consolidated transaction
          reporting system with respect to securities listed or admitted to
          trading on the New York Stock Exchange or, if the Security is not
          listed or admitted to trading on the New York Stock Exchange, as
          reported in the principal consolidated transaction reporting system
          with respect to securities listed on the principal national securities
          exchange on which the Security is listed or admitted to trading or, if
          the Security is not listed or admitted to trading on any national
          securities exchange, the last quoted price or, if not so quoted, the
          average of the high bid and low asked prices in the over-the-counter
          market, as reported by 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 Security is not quoted by any such
          organization, the average of the closing bid and asked prices as
          furnished by a professional market maker making a market in the
          Security selected by the Board of Directors of the Company.  The term
          "Trading Day" shall mean a day on

                                       13.

<PAGE>

which the principal national securities exchange on which the Security is listed
or admitted to trading is open for the transaction of business or, if the
Security is not listed or admitted to trading on any national securities
exchange, a Business Day.

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

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

               (f)  If as a result of an adjustment made pursuant to
Section 11(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 Shares, thereafter the number of such other shares so receivable upon
exercise of any Right shall be subject to adjustment from time to time in a
manner and on terms as nearly equivalent as practicable to the provisions with
respect to the Preferred Shares contained in Section 11(a) through (c),
inclusive, and the provisions of Sections 7, 9, 10, 13 and 14 with respect to
the Preferred Shares shall apply on like terms to any such other shares.

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

               (h)  Unless the Company shall have exercised its election as
provided in Section 11(i), upon each adjustment of the Purchase Price as a
result of the calculations made in Section 11(b) and (c), each Right outstanding
immediately prior to the making of such

                                       14.

<PAGE>

adjustment shall thereafter evidence the right to purchase, at the adjusted
Purchase Price, that number of one one-hundredths of a Preferred Share
(calculated to the nearest one one-millionth of a Preferred Share) obtained by
(i) multiplying (x) the number of one one-hundredths of a Preferred Share
covered by a Right immediately prior to this adjustment by (y) the Purchase
Price in effect immediately prior to such adjustment of the Purchase Price and
(ii) dividing the product so obtained by the Purchase Price in effect
immediately after such adjustment of the Purchase Price.

               (i)  The Company may elect on or after the date of any adjustment
of the Purchase Price to adjust the number of Rights, in substitution for any
adjustment in the number of one one-hundredths of a Preferred Share purchasable
upon the exercise of a Right.  Each of the Rights outstanding after such
adjustment of the number of Rights shall be exercisable for the number of one
one-hundredths of a Preferred Share for which a Right was exercisable
immediately prior to such adjustment.  Each Right held of record prior to such
adjustment of the number of Rights shall become that number of Rights
(calculated to the nearest one ten-thousandth) obtained by dividing the Purchase
Price in effect immediately prior to adjustment of the Purchase Price by the
Purchase Price in effect immediately after adjustment of the Purchase Price.
The Company shall make a public announcement of its election to adjust the
number of Rights, indicating the record date for the adjustment, and, if known
at the time, the amount of the adjustment to be made.  This record date may be
the date on which the Purchase Price is adjusted or any day thereafter, but, if
the Right Certificates have been issued, shall be at least 10 days later than
the date of the public announcement.  If Right Certificates have been issued,
upon each adjustment of the number of Rights pursuant to this Section 11(i), the
Company shall, as promptly as practicable, cause to be distributed to holders of
record of Right Certificates on such record date Right Certificates evidencing,
subject to Section 14 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 Right Certificates held by such holders prior to the date of
adjustment, and upon surrender thereof, if required by the Company, new Right
Certificates evidencing all the Rights to which such holders shall be entitled
after such adjustment.  Right Certificates so to be distributed shall be issued,
executed and countersigned in the manner provided for herein and shall be
registered in the names of the holders of record of Right Certificates on the
record date specified in the public announcement.

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

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

                                       15.

<PAGE>

               (l)  In any case in which this Section 11 shall require that an
adjustment in the Purchase Price be made effective as of a record date for a
specified event, the Company may elect to defer until the occurrence of such
event the issuing to the holder of any Right exercised after such record date of
the Preferred Shares and other capital stock or securities of the Company, if
any, issuable upon such exercise on the basis of the Purchase Price in effect
prior to such adjustment; PROVIDED, HOWEVER, that the Company shall deliver to
such holder a due bill or other appropriate instrument evidencing such holder's
right to receive such additional shares upon the occurrence of the event
requiring such adjustment.

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

               (n)  In the event that at any time after the date of this
Agreement and prior to the Distribution Date, the Company shall (i) declare or
pay any dividend on the Common Shares payable in Common Shares or (ii) effect a
subdivision, combination or consolidation of the Common Shares (by
reclassification or otherwise than by payment of dividends in Common Shares)
into a greater or lesser number of Common Shares, then in any such case (A) the
number of one one-hundredths of a Preferred Share purchasable after such event
upon proper exercise of each Right shall be determined by multiplying the number
of one one-hundredths of a Preferred Share so purchasable immediately prior to
such event by a fraction, the numerator of which is the number of Common Shares
outstanding immediately before such event and the denominator of which is the
number of Common Shares outstanding immediately after such event, and (B) each
Common Share outstanding immediately after such event shall have issued with
respect to it that number of Rights which each Common Share outstanding
immediately prior to such event had issued with respect to it.  The adjustments
provided for in this Section 11(n) shall be made successively whenever such a
dividend is declared or paid or such a subdivision, combination or consolidation
is effected.

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

                                       16.

<PAGE>

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

               (a)  In the event that, following the Shares Acquisition Date,
directly or indirectly (x) the Company shall consolidate with, or merge with and
into, any other Person, (y) any Person shall consolidate with the Company, or
merge with and into the Company, and the Company shall be the continuing or
surviving corporation of such merger (other than, in the case of either
transaction described in (x) or (y), a merger or consolidation which would
result in all of the Voting Power represented by the securities of the Company
outstanding immediately prior thereto continuing to represent (either by
remaining outstanding or by being converted into securities of the surviving
entity) all of the Voting Power represented by the securities of the Company or
such surviving entity outstanding immediately after such merger or consolidation
and the holders of such securities not having changed as a result of such merger
or consolidation), or (z) the Company shall sell, mortgage or otherwise transfer
(or one or more of its subsidiaries shall sell, mortgage or otherwise transfer),
in one or more transactions, assets or earning power aggregating more than 50%
of the assets or earning power of the Company and its subsidiaries (taken as a
whole) to any other Person, then, and in each such case, proper provision shall
be made so that (i) following the Distribution Date, each holder of a Right,
subject to Section 7(e), shall have the right to receive, upon the exercise
thereof at a price equal to the then current Purchase Price multiplied by the
number of one one-hundredths of a Preferred Share for which a Right is then
exercisable in accordance with the terms of this Agreement and in lieu of
Preferred Shares, such number of shares of freely tradeable Common Shares of the
Principal Party (as hereinafter defined), free and clear of liens, rights of
call or first refusal, encumbrances or other adverse claims, as shall be equal
to the result obtained by (A) multiplying the then current Purchase Price by the
number of one one-hundredths of a Preferred Share for which a Right is then
exercisable (without taking into account any adjustment previously made pursuant
to Section 11(a)(ii) hereof) and dividing that product by (B) 50% of the then
current per share market price of the Common Shares of such Principal Party
(determined pursuant to Section 11(d) hereof) on the date of consummation of
such consolidation, merger, sale or transfer; (ii) such Principal Party shall
thereafter be liable for, and shall assume, by virtue of such consolidation,
merger, sale or transfer, all the obligations and duties of the Company pursuant
to this Agreement; (iii) the term "Company" shall thereafter be deemed to refer
to such Principal Party, it being specifically intended that the provisions of
Section 11 hereof shall apply to such Principal Party; and (iv) such Principal
Party shall take such steps (including, but not limited to, the reservation of a
sufficient number of shares of its Common Shares in accordance with Section 9
hereof) in connection with such consummation as may be necessary to assure that
the provisions hereof shall thereafter be applicable, as nearly as reasonably
may be, in relation to its Common Shares thereafter deliverable upon the
exercise of the Rights.

               (b)  "Principal Party" shall mean:

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

                                       17.

<PAGE>

          consolidation (including, if applicable, the Company, if it is the
          surviving corporation); and

                    (ii)   in the case of any transaction described in (z) of
          the first sentence in 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;

p1) if the Common Shares of such Person are not at such time and have not been
continuously over the preceding 12-month period registered under Section 12 of
the Exchange Act, and such Person is a direct or indirect subsidiary or
Affiliate of another Person the Common Shares of which are and have been so
registered, "Principal Party" shall refer to such other Person; (2) in case such
Person is a subsidiary, directly or indirectly, or Affiliate of more than one
Person, the Common Shares of two or more of which are and have been so
registered, "Principal Party" shall refer to whichever of such Persons is the
issuer of the Common Shares having the greatest aggregate market value; and
(3) in case such Person is owned, directly or indirectly, by a joint venture
formed by two or more Persons that are not owned, directly or indirectly, by the
same Person, the rules set forth in (1) and (2) above shall apply to each of the
chains of ownership having an interest in such joint venture as if such party
were a "subsidiary" of both or all of such joint venturers and the Principal
Parties in each such chain shall bear the obligations set forth in this
Section 13 in the same ratio as their direct or indirect interests in such
Person bear to the total of such interests.

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

                    (i)    prepare and file a registration statement under the
          Securities Act of 1933, as amended (the "Act"), with respect to the
          Rights and the securities purchasable upon exercise of the Rights on
          an appropriate form, will use its best efforts to cause such
          registration statement to become effective as soon as practicable
          after such filing and will use its best efforts to cause such
          registration statement to remain effective (with a prospectus at all
          times meeting the requirements of the Act) until the Final Expiration
          Date;

                    (ii)   use its best efforts to qualify or register the
          Rights and the securities purchasable upon exercise of the Rights
          under the blue sky laws of such jurisdictions as may be necessary or
          appropriate; and

                                       18.

<PAGE>

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

The provisions of this Section 13 shall similarly apply to successive mergers or
consolidations or sales or other transfers.

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

SECTION 14.    FRACTIONAL RIGHTS AND FRACTIONAL SHARES.

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

               (b)  The Company shall not be required to issue fractions of
Preferred Shares (other than fractions which are integral multiples of one one-
hundredth of a Preferred Share)

                                       19.

<PAGE>

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

               (c)  The holder of a Right by the acceptance of the Right
expressly waives his right to receive any fractional Rights or any fractional
shares upon exercise of a Right (except as provided above).

SECTION 15.    RIGHTS OF ACTION.  All rights of action in respect of this
Agreement, excepting the rights of action given to the Rights Agent under
Sections 18 and 20 hereof, are vested in the respective registered holders of
the Right Certificates (and, prior to the Distribution Date, the registered
holders of the Common Shares) and any registered holder of any Right Certificate
(or, prior to the Distribution Date, of the Common Shares), without the consent
of the Rights Agent or of the holder of any other Right Certificate (or, prior
to the Distribution Date, of the Common Shares), may, in his own behalf and for
his own benefit, enforce, and may institute and maintain any suit, action or
proceeding against the Company to enforce, or otherwise act in respect of, his
right to exercise the Rights evidenced by such Right Certificate in the manner
provided in such Right Certificate and in this Agreement.  Without limiting the
foregoing or any remedies available to the holders of Rights, it is specifically
acknowledged that the holders of Rights would not have an adequate remedy at law
for any breach of this Agreement and will be entitled to specific performance of
the obligations under, and injunctive relief against actual or threatened
violations of the obligations of any Person subject to, this Agreement.  Holders
of Rights shall be entitled to recover the reasonable costs and expenses,
including attorneys fees, incurred by them in any action to enforce the
provisions of this Agreement.

SECTION 16.    AGREEMENT OF RIGHT HOLDERS.  Every holder of a Right, by
accepting the same, consents and agrees with the Company and the Rights Agent
and with every other holder of a Right that:

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

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

                                       20.

<PAGE>

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

SECTION 17.    RIGHT CERTIFICATE HOLDER NOT DEEMED A STOCKHOLDER.  No holder, as
such, of any Right Certificate shall be entitled to vote, receive dividends or
be deemed for any purpose the holder of the Preferred Shares or any other
securities of the Company which may at any time be issuable on the exercise of
the Rights represented thereby, nor shall anything contained herein or in any
Right Certificate be construed to confer upon the holder of any Right
Certificate, as such, any of the rights of a stockholder of the Company or any
right to vote for the election of directors or upon any matter submitted to
stockholders at any meeting thereof, or to give or withhold consent to any
corporate action, or to receive notice of meetings or other actions affecting
stockholders (except as provided in Section 25 hereof), or to receive dividends
or subscription rights, or otherwise, until the Right or Rights evidenced by
such Right Certificate shall have been exercised in accordance with the
provisions hereof.

SECTION 18.    CONCERNING THE RIGHTS AGENT.  The Company agrees to pay to the
Rights Agent reasonable compensation for all services rendered by it hereunder
and, from time to time, on demand of the Rights Agent, its reasonable expenses
and counsel fees and other disbursements incurred in the administration and
execution of this Agreement and the exercise and performance of its duties
hereunder.  The Company also agrees to indemnify the Rights Agent for, and to
hold it harmless against, any loss, liability, or expense, incurred without
negligence, bad faith or willful misconduct on the part of the Rights Agent, for
anything done or omitted by the Rights Agent in connection with the acceptance
and administration of this Agreement, including the costs and expenses of
defending against any claim of liability in the premises.  The indemnity
provided herein shall survive the expiration of the Rights and the termination
of this Agreement.

     The Rights Agent shall be protected and shall incur no liability for, or in
respect of any action taken, suffered or omitted by it in connection with, its
administration of this Agreement in reliance upon any Right Certificate or
certificate for the Preferred Shares or Common Shares or for other securities of
the Company, instrument of assignment or transfer, power of attorney,
endorsement, affidavit, letter, notice, direction, consent, certificate,
statement, or other paper or document believed by it to be genuine and to be
signed, executed and, where necessary, verified or acknowledged, by the proper
person or persons, or otherwise upon the advice of counsel as set forth in
Section 20 hereof.

SECTION 19.    MERGER OR CONSOLIDATION OR CHANGE OF NAME OF RIGHTS AGENT.  Any
corporation into which the Rights Agent or any successor Rights Agent may be
merged or with which it may be consolidated, or any corporation resulting from
any merger or consolidation to which the Rights Agent or any successor Rights
Agent shall be a party, or any corporation

                                       21.

<PAGE>

succeeding to the shareholder services or corporate trust business of the Rights
Agent or any successor Rights Agent, shall be the successor to the Rights Agent
under this Agreement without the execution or filing of any paper or any further
act on the part of any of the parties hereto, provided that such corporation
would be eligible for appointment as a successor Rights Agent under the
provisions of Section 21 hereof.  In case at the time such successor Rights
Agent shall succeed to the agency created by this Agreement any of the Right
Certificates shall have been countersigned but not delivered, any such successor
Rights Agent may adopt the countersignature of the predecessor Rights Agent and
deliver such Right Certificates so countersigned; and in case at that time any
of the Right Certificates shall not have been countersigned, any successor
Rights Agent may countersign such Right Certificates either in the name of the
predecessor Rights Agent or in the name of the successor Rights Agent; and in
all such cases such Right Certificates shall have the full force provided in the
Right Certificates and in this Agreement.

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

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

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

               (b)  Whenever in the performance of its duties under this
Agreement the Rights Agent shall deem it necessary or desirable that any fact or
matter be proved or established by the Company prior to taking or suffering any
action hereunder, such fact or matter (unless other evidence in respect thereof
be herein specifically prescribed) may be deemed to be conclusively proved and
established by a certificate signed by any one of the Chairman of the Board, the
Chief Executive Officer, the President, the Chief Financial Officer, any Vice
President, the Treasurer or the Secretary of the Company and delivered to the
Rights Agent; and such certificate shall be full authorization to the Rights
Agent for any action taken or suffered in good faith by it under the provisions
of this Agreement in reliance upon such certificate.

               (c)  The Rights Agent shall be liable hereunder to the Company
and any other Person only for its own negligence, bad faith or willful
misconduct.

               (d)  The Rights Agent shall not be liable for or by reason of any
of the statements of fact or recitals contained in this Agreement or in the
Right Certificates (except its

                                       22.

<PAGE>

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

               (e)  The Rights Agent shall not be under any responsibility in
respect of the validity of this Agreement or the execution and delivery hereof
(except the due execution hereof by the Rights Agent) or in respect of the
validity or execution of any Right Certificate (except its countersignature
thereof); nor shall it be responsible for any breach by the Company of any
covenant or condition contained in this Agreement or in any Right Certificate;
nor shall it be responsible for any change in the exercisability of the Rights
(including the Rights becoming void pursuant to Section 11(a)(ii) hereof) or any
adjustment in the terms of the Rights (including the manner, method or amount
thereof) provided for in Section 3, 11, 13, 23 or 24, or the ascertaining of the
existence of facts that would require any such change or adjustment (except with
respect to the exercise of Rights evidenced by Right Certificates after receipt
of a certificate pursuant to Section 12 describing such change or adjustment);
nor shall it by any act hereunder be deemed to make any representation or
warranty as to the authorization or reservation of any Preferred Shares to be
issued pursuant to this Agreement or any Right Certificate or as to whether any
Preferred Shares will, when issued, be validly authorized and issued, fully paid
and nonassessable.

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

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

               (h)  The Rights Agent and any stockholder, director, officer or
employee of the Rights Agent may buy, sell or deal in any of the Rights or other
securities of the Company or become pecuniarily interested in any transaction in
which the Company may be interested, or contract with or lend money to the
Company or otherwise act as fully and freely as though

                                       23.

<PAGE>

it were not Rights Agent under this Agreement.  Nothing herein shall preclude
the Rights Agent from acting in any other capacity for the Company or for any
other legal entity.

               (i)  The Rights Agent may execute and exercise any of the rights
or powers hereby vested in it or perform any duty hereunder either itself or by
or through its attorneys or agents, and the Rights Agent shall not be answerable
or accountable for any act, default, neglect or misconduct of any such attorneys
or agents or for any loss to the Company resulting from any such act, default,
neglect or misconduct, provided reasonable care was exercised in the selection
and continued employment thereof.

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

               (k)  If, with respect to any Right Certificate surrendered to the
Rights Agent for exercise or transfer, the certificate attached to the form of
assignment or form of election to purchase, as the case may be, has not been
executed, the Rights Agent shall not take any further action with respect to
such requested exercise of transfer without first consulting with the Company.

SECTION 21.    CHANGE OF RIGHTS AGENT.  The Rights Agent or any successor Rights
Agent may resign and be discharged from its duties under this Agreement upon 30
days' notice in writing mailed to the Company and to each transfer agent for the
Common Shares or Preferred Shares by registered or certified mail, and to the
holders of the Right Certificates by first-class mail.  The Company may remove
the Rights Agent or any successor Rights Agent upon 30 days' notice in writing,
mailed to the Rights Agent or successor Rights Agent, as the case may be, and to
each transfer agent for the Common Shares or Preferred Shares by registered or
certified mail, and to the holders of the Right Certificates by first-class
mail.  If the Rights Agent shall resign or be removed or shall otherwise become
incapable of acting, the Company shall appoint a successor to the Rights Agent.
If the Company shall fail to make such appointment within a period of 30 days
after giving notice of such removal or after it has been notified in writing of
such resignation or incapacity by the resigning or incapacitated Rights Agent or
by the holder of a Right Certificate (who shall, with such notice, submit his
Right Certificate for inspection by the Company), then the registered holder of
any Right Certificate may apply to any court of competent jurisdiction for the
appointment of a new Rights Agent.  Any successor Rights Agent, whether
appointed by the Company or by such a court, shall be a corporation organized
and doing business under the laws of the United States or of any other state of
the United States which is authorized under such laws to exercise corporate
trust or stock transfer powers and is subject to supervision or examination by
federal or state authority and which has at the time of its appointment as
Rights Agent a combined capital and surplus of at least $50 million.  After
appointment, the successor Rights Agent shall be vested with the same powers,
rights, duties and responsibilities as if it had been originally named as Rights
Agent without further act or deed; but the predecessor Rights Agent shall
deliver and transfer to the successor Rights Agent any

                                       24.

<PAGE>

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 for the
Common Shares or Preferred Shares, and mail a notice thereof in writing to the
registered holders of the Right Certificates.  Failure to give any notice
provided for in this Section 21, however, or any defect therein, shall not
affect the legality or validity of the resignation or removal of the Rights
Agent or the appointment of the successor Rights Agent, as the case may be.

SECTION 22.    ISSUANCE OF NEW RIGHT CERTIFICATES.  Notwithstanding any of the
provisions of this Agreement or of the Rights to the contrary, the Company may,
at its option, issue new Right Certificates evidencing Rights in such form as
may be approved by its Board of Directors to reflect any adjustment or change in
the Purchase Price and the number or kind or class of shares or other securities
or property purchasable under the Right Certificates made in accordance with the
provisions of this Agreement.

SECTION 23.    REDEMPTION.

               (a)  The Rights may be redeemed by action of the Board of
Directors pursuant to subsection (b) of this Section 23 and shall not be
redeemed in any other manner.

               (b)  The Board of Directors of the Company may, at its option, at
any time prior to the earliest of (i) the close of business on (A) the twentieth
day following the Shares Acquisition Date or (B) such date or dates more than 20
days after the Shares Acquisition Date to which such option may be extended by
the Board of Directors (for one or more successive 10 day periods) by vote(s)
first taken or written consent(s) first given on or prior to the twentieth day
following the Shares Acquisition Date and, thereafter, on or prior to the
completion of any such 10 day extension or extensions (or, if the Shares
Acquisition Date shall have occurred prior to the Record Date, the close of
business on (A) the twentieth day following the Record Date or (B) such date or
dates more than 20 days after the Record Date to which such option may be
extended by the Board of Directors (for one or more successive 10 day periods)
by vote(s) first taken or written consent(s) first given on or prior to the
twentieth day following the Record Date and, thereafter, on or prior to the
completion of any such 10 day extension or extensions); (ii) such time on or
after the Shares Acquisition Date as there shall have occurred a Change of
Control; or (iii) the Final Expiration Date, redeem all but not less than all
the then outstanding Rights at a redemption price of $.001 per Right,
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"), and the Company may, at its
option, pay the Redemption Price in Common Shares (based on the "current per
share market price," as defined in Section 11(d) hereof, of the Common Shares at
the time of redemption), cash or any other form of consideration deemed
appropriate by the Board of Directors.  The Company's redemption option pursuant
to this Section 23 shall terminate at such time on or after the Shares
Acquisition Date as there shall occur a Change of Control.  The redemption of
the Rights by the Board of Directors may be made effective at such time, on such
basis and subject to such conditions as the Board of Directors in its sole
discretion may establish.  Notwithstanding

                                       25.

<PAGE>

anything contained in this Agreement to the contrary, the Rights shall not be
exercisable pursuant to Section 11(a)(ii) hereof prior to the expiration or
termination of the Company's right of redemption hereunder.

               (c)  Immediately upon the action of the Board of Directors of the
Company ordering the redemption of the Rights pursuant to subsection (b) of this
Section 23, 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.  The Company shall promptly
give public notice of any such redemption; PROVIDED, HOWEVER, that the failure
to give, or any defect in, any such notice shall not affect the validity of such
redemption.  Within 10 days after such action of the Board of Directors ordering
the redemption of the Rights pursuant to subsection (b) the Company shall mail a
notice of redemption to all the holders of the then outstanding Rights at their
last addresses as they appear upon the registry books of the Rights Agent or,
prior to the Distribution Date, on the registry books of the transfer agent for
the Common Shares.  Any notice which is mailed in the manner herein provided
shall be deemed given, whether or not the holder receives the notice.  Each such
notice of redemption will state the method by which the payment of the
Redemption Price will be made.  Neither the Company nor any of its Affiliates or
Associates may redeem, acquire or purchase for value any Rights at any time in
any manner other than that specifically set forth in this Section 23 or in
Section 24 hereof, and other than in connection with the purchase of Common
Shares prior to the Distribution Date.

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

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 void pursuant to the provisions of Section 11(a)(ii) hereof) for
Common Shares at an exchange ratio of one Common Share 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 Board of
Directors shall not be empowered to effect such exchange at any time after any
Person (other than the Company, any Subsidiary of the Company, any employee
benefit plan of the Company or any such Subsidiary, or any entity holding Common
Shares for or pursuant to the terms of any such plan), together with all
Affiliates and Associates of such Person, becomes the Beneficial Owner of 50% or
more of the Common Shares then outstanding.

                                       26.

<PAGE>

               (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 a holder
of such Rights shall be to receive that number of Common Shares equal to the
number of such Rights held by such holder multiplied by the Exchange Ratio.  The
Company shall promptly give public notice of any such exchange; PROVIDED,
HOWEVER, that the failure to give, or any defect in, such notice shall not
affect the validity of such exchange.  The Company promptly shall mail a notice
of any such exchange to all of the holders of such Rights at their last
addresses as they appear upon the registry books of the Rights Agent.  Any
notice which is mailed in the manner herein provided shall be deemed given,
whether or not the holder receives the notice.  Each such notice of exchange
will state the method by which the exchange of the Common Shares for Rights will
be effected and, in the event of any partial exchange, the number of Rights
which will be exchanged.  Any partial exchange shall be effected pro rata based
on the number of Rights (other than Rights which have become void pursuant to
the provisions of Section 11(a)(ii) hereof) held by each holder of Rights.

               (c)  In the event that there shall not be sufficient Common
Shares issued but not outstanding or authorized but unissued to permit any
exchange of Rights as contemplated in accordance with this Section 24, the Board
of Directors, if the Board of Directors determine that such action is necessary
or appropriate and not contrary to the interests of the holders of Rights, may,
but shall not be required to, with respect to each Right, (A) take all such
action as may be necessary to authorize additional Common Shares for issuance
upon exchange of the Rights, or (B) pay cash in an amount equal to the current
per share market price of one Common Share (determined pursuant to Section 11(d)
on the date of the occurrence of the event described in Section 11(a)(ii)) in
exchange for each Right, in lieu of issuing Common Shares, or (C) issue debt or
equity securities (including, without limitation, shares, or fractions of
shares, of preferred stock, including Preferred Shares, which the Board of
Directors has deemed to have the same value as Common Shares)or a combination
thereof, having a value equal to the current per share market price of one
Common Share (determined pursuant to Section 11(d) on the date of the occurrence
of the event described in Section 11(a)(ii)) where the value of such securities
shall be determined by a nationally recognized investment banking firm selected
by the Board of Directors of the Company, in exchange for each Right, or (D)
deliver any combination of cash, property, Common Shares and/or other securities
having a value equal to the current per share market price of one Common Share
(determined pursuant to Section 11(d) on the date of the occurrence of the event
described in Section 11(b)(ii)) in exchange for each Right.  To the extent that
the Company determines that some action need be taken pursuant to clauses (A),
(B), (C) or (D) of this Section 24(c), the Board of Directors may temporarily
suspend the exercisability of the Rights for a period of up to 45 days following
the date on which the event described in Section 11(a)(ii) shall have occurred,
in order to seek any authorization of additional Common Shares and/or to decide
the appropriate form of distribution to be made pursuant to the above provision
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.

                                       27.

<PAGE>

               (d)  The Company shall not be required to issue fractions of
Common Shares or to distribute certificates which evidence fractional Common
Shares.  In lieu of such fractional Common Shares, the Company shall pay to the
registered holders of the Right Certificates with regard to which such
fractional Common Shares would otherwise be issuable an amount in cash equal to
the same fraction of the current market value of a whole Common Share.  For the
purposes of this subsection (d), the current market value of a whole Common
Share shall be the closing price of a Common Share (as determined pursuant to
the second sentence of Section 11(d)(i) hereof) for the Trading Day immediately
after the date of the first public announcement by the Company that an exchange
is to be effected pursuant to this Section 24.

               (e)  The Company shall not be required to issue fractions of
Preferred Shares (other than fractions which are integral multiples of one one-
hundredth of a Preferred Share) upon exchange of the Rights or to distribute
certificates which evidence fractional Preferred Shares (other than fractions
which are integral multiples of one one-hundredth of a Preferred Share).
Fractions of Preferred Shares in integral multiples of one one-hundredth of a
Preferred Share may, at the election of the Company, be evidenced by depositary
receipts; PROVIDED, HOWEVER, that holders of such depositary receipts shall have
all of the rights, privileges and preferences to which they are entitled as
beneficial owners of the Preferred Shares represented by such depositary
receipts.  In lieu of fractional Preferred Shares that are not integral
multiples of one one-hundredth of a Preferred Share, the Company shall pay to
the registered holders of Right Certificates at the time such Rights are
exercised as herein provided an amount in cash equal to the same fraction of the
current market value of one Preferred Share.  For the purposes of this
Section 24(e), the current market value of a Preferred Share shall be the
closing price of a Preferred Share (as determined pursuant to the second
sentence of Section 11(d)(i) hereof) for the Trading Day immediately after  the
date of the first public announcement by the Company that an exchange is to be
effected pursuant to this Section 24.

SECTION 25.    NOTICE OF CERTAIN EVENTS.

               (a)  In case the Company shall propose (i) to pay any dividend
payable in stock of any class to the holders of its Preferred Shares or to make
any other distribution to the holders of its Preferred Shares (other than a
regular quarterly cash dividend), (ii) to offer to the holders of its Preferred
Shares rights or warrants to subscribe for or to purchase any additional
Preferred Shares or shares of stock of any class or any other securities, rights
or options, (iii) to effect any reclassification of its Preferred Shares (other
than a reclassification involving only the subdivision of outstanding Preferred
Shares), (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 50% or more
of the assets or earning power of the Company and its Subsidiaries (taken as a
whole), to any other Person, (v) to effect the liquidation, dissolution or
winding up of the Company, or (vi) to declare or pay any dividend on the Common
Shares payable in Common Shares or to effect a subdivision, combination or
consolidation of the Common Shares (by reclassification or otherwise than by
payment of dividends in Common Shares), then, in each such case, the Company
shall give to each holder of a Right Certificate, in accordance with Section 26
hereof, a notice of such proposed action, which shall specify the record date
for the purpose of such stock dividend, or distribution of

                                       28.

<PAGE>

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 Common Shares and/or
the Preferred Shares, if any such date is to be fixed, and such notice shall be
so given in the case of any action covered by clause (i) or (ii) above at least
10 days prior to the record date for determining holders of the Preferred Shares
for purposes of such action, and in the case of any such other action, at least
10 days prior to the date of the taking of such proposed action or the date of
participation therein by the holders of the Common Shares and/or the Preferred
Shares, whichever shall be the earlier.

               (b)  In case the event set forth in Section 11(a)(ii) hereof
shall occur, then the Company shall as soon as practicable thereafter give to
each holder of a Right Certificate, in accordance with Section 26 hereof, a
notice of the occurrence of such event, which notice shall describe the event
and the consequences of the event to holders of Rights under Section 11(a)(ii)
hereof.

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

               NELLCOR INCORPORATED
               25495 WHITESELL STREET
               HAYWARD, CALIFORNIA  94545
               ATTENTION:  GENERAL COUNSEL AND SECRETARY

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

               THE FIRST NATIONAL BANK OF BOSTON
               BLUE HILLS OFFICE PARK
               MAIL STOP: 45-02-16
               150 ROYALL STREET
               CANTON, MA  02021
               ATTENTION:  SHAREHOLDER SERVICES DIVISION

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

SECTION 27.    SUPPLEMENTS AND AMENDMENTS.  The Company may from time to time
supplement or amend this Agreement without the approval of any holders of Right
Certificates in order to cure any ambiguity, to correct or supplement any
provision contained herein which

                                       29.

<PAGE>

may be defective or inconsistent with any other provisions herein, or to make
any other provisions with respect to the Rights which the Company may deem
necessary or desirable, any such supplement or amendment to be evidenced by a
writing signed by the Company and the Rights Agent; PROVIDED, HOWEVER, that from
and after such time as any Person becomes an Acquiring Person, this Agreement
shall not be amended in any manner which would adversely affect the interests of
the holders of Rights.  Without limiting the foregoing, the Company may at any
time prior to such time as any Person becomes an Acquiring Person amend this
Agreement to lower the thresholds set forth in Sections 1(a) and 3(a) hereof
from 15% to any percentage which is (i) greater than the largest percentage of
the outstanding Common Shares then known by the Company to be beneficially owned
by any Person (other than the Company, any Subsidiary of the Company, any
employee benefit plan of the Company or any Subsidiary, or any entity holding
Common Shares for or pursuant to the terms of any such plan) and (ii) not less
than 10%.  Upon delivery of a certificate from an appropriate officer of the
Company which states that the proposed supplement or amendment is in compliance
with the terms of this Section 27, the Rights Agent shall execute such
supplement or amendment unless the Rights Agent shall have determined in good
faith that such supplement or amendment would adversely affect its interest
under this Agreement.  Prior to the Distribution Date, the interests of the
holders of Rights shall be deemed coincident with the interests of the holders
of Common Shares.

SECTION 28.    DETERMINATION AND ACTIONS BY THE BOARD OF DIRECTORS, ETC.  For
all purposes of this Agreement, any calculation of the number of Common Shares
outstanding at any particular time, including for purposes of determining the
particular percentage of such outstanding Common Shares or any other securities
of which any Person is the Beneficial Owner, 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 the Company, or as may be necessary or advisable in the
administration of this Agreement, including without limitation, the right and
power to (i) interpret the provisions of this Agreement, and (ii) make all
determinations deemed necessary or advisable for the administration of this
Agreement (including a determination to redeem or not redeem the Rights or to
amend the Agreement).  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 Rights Agent and the holders
of the Right Certificates, and (y) not subject the Board to any liability to the
holders of the Right Certificates.

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

SECTION 30.    BENEFITS OF THIS AGREEMENT.  Nothing in this Agreement shall be
construed to give to any person or corporation other than the Company, the
Rights Agent and the registered holders of the Right Certificates (and, prior to
the Distribution Date, the Common Shares) any

                                       30.

<PAGE>

legal or equitable right, remedy or claim under this Agreement; but this
Agreement shall be for the sole and exclusive benefit of the Company, the Rights
Agent and the registered holders of the Right Certificates (and, prior to the
Distribution Date, the Common Shares).

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 full force and
effect and shall in no way be affected, impaired or invalidated.

SECTION 32.    GOVERNING LAW.  This Agreement and each Right Certificate issued
hereunder shall be deemed to be a contract made under the laws of the State of
Delaware and for all purposes shall be governed by and construed in accordance
with the laws of such State applicable to contracts to be made and performed
entirely within such State.

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

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, parties hereto have caused this Agreement to be duly
executed and their seals attested, all as of the day and year first above
written.


                                        NELLCOR INCORPORATED
Attest:


By: /s/ Michael P. Downey               By: /s/ Laureen DeBuono
   -----------------------------            -----------------------------
   Michael P. Downey                        Laureen DeBuono
   Vice President, Chief Financial          General Counsel and Corporate
   Officer                                  Secretary

                                        FIRST NATIONAL BANK OF BOSTON
Attest:


By: /s/ Paul Edwards                    By: /s/ Geoffrey D. Anderson
   -----------------------------           -----------------------------
   Paul Edwards                            Geoffrey D. Anderson
   Assistant Vice President                Senior Account Manager


                                       31.



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