Document:

<PAGE>   1
                                                                   Exhibit 10.33

                              CONSULTING AGREEMENT

John P. Walker
126 Isabella Avenue
Atherton, CA 94027                                               January 1, 2001

Dear John:

     Microcide Pharmaceuticals, Inc. (the "Company") wishes to obtain your
services as a consultant. This letter shall constitute an agreement between you
and the Company, and contains all the terms and conditions relating to the
performance of such services.

     1.   Term and Termination. This agreement shall become effective on January
1, 2001 and terminate on the earlier of the date on which you: (1) cease to
serve on the Company's Board of Directors; or (2) cease to provide services to
the Company under this agreement. This agreement may be terminated either by you
or the Company at any time, subject to the provisions of Paragraph 14.

     2.   Consulting. During the term of this agreement, you will provide
consulting services as may be reasonably requested by the Chief Executive
Officer of the Company. Nominally, you agree to provide consulting services up
to a half-time basis, consistent with the direction of the Company's Board of
Directors.

     3.   Consideration. As consideration for your services and other
obligations, the Company agrees to: (i) pay you at the rate of $15,000.00 per
month, and (ii) grant an option to purchase 75,000 shares of the Common Stock of
the Company under the terms as set forth in Exhibit A.

     4.   Support. As additional consideration for your services hereunder, the
Company will provide you with such support facilities and space as may be
required in the Company's judgment to enable you to properly perform your
services hereunder.

     5.   Expenses. You will be reimbursed for reasonable travel and other
out-of-pocket expenses incurred by you in connection with your services under
this agreement, provided that you provide receipts and an invoice on a monthly
basis and obtain prior approval of the Chief Executive Officer of the Company
for any significant expenses. Such reimbursements will be paid within fifteen
(15) days of receipt of the invoice.

     6.   Independent Contractor. Your relationship with the Company will be
that of an independent contractor and not that of an employee. You will not be
eligible for any employee

<PAGE>   2

benefits, nor will the Company make deductions from payments made to you for
taxes, which will be your responsibility. You agree to indemnify and hold the
Company harmless from any liability for, or assessment of, any such taxes
imposed on the Company by relevant taxing authorities. You will have no
authority to enter into contracts that bind the Company or create obligations on
the part of the Company without the prior written authorization of the Company.

     7.   Reporting. All services to be performed by you will be as agreed
between you and the Chief Executive Officer of the Company, with periodic
reports to the Board of Directors concerning your services performed under this
agreement. The nature and frequency of these reports will be left to the
discretion of the Board of Directors.

     8.   Confidentiality. You shall keep in confidence and shall not disclose
or make available to third parties or make any use of any information or
documents relating to your services under this agreement, the research and
development activities, or to the products, methods of manufacture, trade
secrets, processes, business or affairs or confidential or proprietary
information of the Company (other than information in the public domain through
no fault of your own), except with the prior written consent of the Company or
to the extent necessary in performing tasks assigned to you by the Company.
Within five business days of termination of this agreement, you will return to
the company all documents and other materials related to the services provided
hereunder or furnished to you by the Company at any time. Your obligations under
this Paragraph 8 will survive termination of this agreement.

     9.   Amendment. Any amendment to this agreement must be in writing signed
by you and the Company.

     10.  Notices. All notices, requests and other communications called for by
this agreement shall be deemed to have been given if made in writing and
personally delivered or mailed, postage prepaid, if to you at the address set
forth above and if to the Company at 850 Maude Avenue, Mountain View, California
94043, Attention: Chief Executive Officer, or to such other addresses as either
party shall specify to the other.

     11.  Governing Law. The laws of the State of California shall govern the
validity, performance and construction of this agreement.

     12.  Arbitration. By signing this agreement, you acknowledge and understand
that any disagreement regarding this agreement will be determined by submission
to arbitration as provided by Section 1230 et seq. of the California code of
Civil Procedure, and not by a lawsuit or resort to court process proceedings.
All parties to this Agreement, by entering into it, are giving up any right to
have any such dispute decided in a court before a jury, and instead are
accepting the use of arbitration.

     13.  Prior Agreements. This agreement supersedes all other agreements
between you and the Company.

     14.  Corporate Transaction. In the event of a Corporate Transaction as
defined in Exhibit A that results in the loss of acceleration of vesting of
options in order to permit the

                                       2

<PAGE>   3

transaction to be accounted for as a "Pooling of Interests", this agreement
shall be automatically extended for a period of three years, and shall not be
subject to earlier termination unless by mutual consent of the parties hereto.

     If this agreement is satisfactory, you should execute and return the
original and one copy to us, retaining the third copy for your file.

                                       Very truly yours,

                                       By: /s/ James E. Rurka
                                          -----------------------------
                                       Title:  Chief Executive Officer

AGREED AND ACCEPTED:

/s/  John P. Walker
----------------------
Signature

2/13/2001

                                       3

<PAGE>   4

                                                                       Exhibit A

                               STOCK OPTION GRANT

1.   Consultant will be granted a non-qualified option to purchase 75,000 shares
     of the Company's Common Stock, at an exercise price of $7.625 per share,
     the closing price for the Company's Common Stock reported by the Nasdaq
     National Stock Market on the day of approval of the grant by the
     Compensation Committee of the Board of Directors.

2.   The option shall have a term of ten (10) years and vest monthly over 4
     years.

3.   Accelerated Vesting: If a Corporate Transaction (as defined below) occurs
     prior to the complete vesting, but in no case after 3 months from the date
     of termination of the Consultant, the option shall immediately vest with
     respect to any remaining unvested shares and be fully exercisable for the
     entire number of shares of the Company's Common Stock underlying the
     option. The term "Corporate Transaction" shall mean (i) a merger,
     reorganization or other transaction (other than a financing) following
     which the shareholders of the Company do not own a majority of the capital
     stock of the surviving corporation; or (ii) the sale of all or
     substantially all of the assets of the Company.

4.   Potential Pooling Transactions: In the event the Company's Board of
     Directors determines that acceleration of vesting of options would preclude
     accounting for a proposed Corporate Transaction involving a Change in
     Control as a "Pooling of Interests," but the Board of Directors otherwise
     desires to approve and account for such transaction as a "Pooling of
     Interests," the acceleration of vesting of options shall be null and void.

                                       4<PAGE>   1
                                                                     Exhibit 4.1

                                 USBANCORP, INC.

                                       and

                             USBANCORP TRUST COMPANY

                                 as rights agent

                                RIGHTS AGREEMENT

                          Dated as of February 24, 1995
<PAGE>   2
                                TABLE OF CONTENTS

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

2.   Appointment of Rights Agent................................................................................    5

3.   Issue of Rights Certificates...............................................................................    6

4.   Form of Rights Certificates................................................................................    7

5.   Countersignature and Registration..........................................................................    8

6.   Transfer, Split Up, Combination, or Exchange of Rights Certificates; Mutilated, Destroyed, Lost, or Stolen
         Rights Certificates....................................................................................    9

7.   Exercise of Rights; Purchase Price; Expiration Date of Rights..............................................   10

8.   Cancellation and Destruction of Rights Certificates........................................................   12

9.   Reservation and Availability of Capital Stock..............................................................   13

10.  Preferred Stock Record Date................................................................................   14

11.  Adjustment of Purchase Price, Number and Kind of Shares or Number of Rights................................   15

12.  Certificate of Adjusted Purchase Price or Number of Shares.................................................   27

13.  Consolidation, Merger, or Sale or Transfer of Assets or Earning Power......................................   27

14.  Fractional Rights and Fractional Shares....................................................................   30

15.  Rights of Action...........................................................................................   31

16.  Agreement of Rights Holders................................................................................   31
</TABLE>

                                      (i)
<PAGE>   3
<TABLE>
<S>                                                                                                              <C>
17.  Rights Certificate Holder Not Deemed a Shareholder.........................................................   32

18.  Concerning the Rights Agent................................................................................   33

19.  Merger or Consolidation or Change of Name of Rights Agent..................................................   33

20.  Duties of Rights Agent.....................................................................................   34

21.  Change of Rights Agent.....................................................................................   36

22.  Issuance of New Rights Certificates........................................................................   37

23.  Redemption and Termination.................................................................................   37

24.  Exchange...................................................................................................   39

25.  Notice of Certain Events...................................................................................   40

26.  Notices....................................................................................................   41

27.  Supplements and Amendments.................................................................................   41

28.  Successors.................................................................................................   42

29.  Determinations and Actions by the Board of Directors.......................................................   42

30.  Benefits of this Agreement.................................................................................   43

31.  Severability...............................................................................................   43

32.  Governing Law..............................................................................................   43

33.  Counterparts...............................................................................................   43

34.  Descriptive Headings.......................................................................................   43
</TABLE>

Exhibit A  -  Terms of Series C Junior Participating Preferred Stock

                                      (ii)
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Exhibit B  -  Form of Rights Certificate

Exhibit C  -  Summary of Rights to Purchase Preferred Shares

                                     (iii)
<PAGE>   5
                                RIGHTS AGREEMENT

         RIGHTS AGREEMENT, dated as of February 24, 1995 (the "Agreement"),
between USBANCORP, INC., a Pennsylvania business corporation (the "Company"),
and USBANCORP TRUST COMPANY, a Pennsylvania trust company, as rights agent (the
"Rights Agent").

                                   BACKGROUND

         On February 24, 1995 (the "Rights Dividend Declaration Date"),
the Board of Directors of the Company authorized and declared a dividend
distribution of one Right (as hereinafter defined) for each share of common
stock, par value $2.50 per share, of the Company (the "Common Stock")
outstanding at the close of business on the Rights Dividend Declaration Date,
payable to shareholders of record as of the close of business on March 15, 1995
(the "Record Date"), and has authorized the issuance of one Right (as such
number may hereinafter be adjusted pursuant to the provisions of Section 11(p)
hereof) for each share of Common Stock issued between the Record Date (whether
originally issued or delivered from the Company's treasury) and the Distribution
Date, each Right initially representing the right to purchase one one-hundredth
of a share of Series C Junior Participating Preferred Stock of the Company
having the rights, powers, and preferences herein set forth, upon the terms and
subject to the conditions hereinafter set forth (the "Rights"). This Agreement
supercedes and replaces the Shareholder Rights Protection Agreement dated
November 10, 1989 between the Company and United States National Bank in
Johnstown, as rights agent.

                                   AGREEMENT:

         NOW, THEREFORE, in consideration of the premises and the mutual
agreements herein set forth, the parties hereto, intending to be legally bound,
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 who or which,
together with all Affiliates and Associates of such Person, shall be the
Beneficial

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Owner of (i) 19.9% or more of the shares of Common Stock or (ii) Voting
Securities that in the aggregate represent 19.9% or more of the Total Voting
Power, but shall not include the Company, any Subsidiary of the Company, any
employee stock option plan or other employee benefit plan of the Company or of
any Subsidiary of the Company, or any Person or entity organized, appointed, or
established by the Company for or pursuant to the terms of any such plan.

              (b) "Adverse Person" shall mean any Person declared to be an
Adverse Person by the Board of Directors upon a determination that the criteria
set forth in Section 11(a)(ii)(B) apply to such Person.

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

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

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

                                       5
<PAGE>   7
                  (ii) which such Person or any of such Person's Affiliates or
         Associates, directly or indirectly, has the right to vote or dispose of
         or has "beneficial ownership" of (as determined pursuant to Rule 13d-3
         of the General Rules and Regulations under the Exchange Act), including
         pursuant to any agreement, arrangement, or understanding, whether or
         not in writing; provided, however, that a Person shall not be deemed
         the "Beneficial Owner" of, or to "beneficially own," any security under
         this subparagraph (ii) as a result of an agreement, arrangement, or
         understanding to vote such security if such agreement, arrangement, or
         understanding (A) arises solely from a revocable proxy given in
         response to a public proxy or consent solicitation made pursuant to,
         and in accordance with, the applicable provisions of the General Rules
         and Regulations under the Exchange Act and (B) is not also then
         reportable by such Person on Schedule 13D under the Exchange Act (or
         any comparable or successor report); or

                  (iii) which are beneficially owned, directly or indirectly, by
         any other Person (or any Affiliate or Associate thereof) with which
         such Person (or any of such Person's Affiliates or Associates) has any
         agreement, arrangement, or understanding (whether or not in writing),
         for the purpose of acquiring, holding, voting (except pursuant to a
         revocable proxy as described in the proviso to subparagraph (ii) of
         this paragraph (d)), or disposing of any Voting Securities; provided,
         however, that nothing in this paragraph (d) shall cause a person
         engaged in business as an underwriter of securities to be the
         "Beneficial Owner" of, or to "beneficially own," any securities
         acquired through such person's participation in good faith in a firm
         commitment underwriting until the expiration of forty days after the
         date of such acquisition.

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

                                       6
<PAGE>   8
              (f) "Close of business" on any given date shall mean 5:00 P.M.,
New York time, on such date; provided, however, that if such date is not a
Business Day it shall mean 5:00 P.M., New York time, on the next succeeding
Business Day.

              (g) "Common Stock" shall mean the common stock, par value $2.50
per share, of the Company, except that "Common Stock" when used with reference
to any Person other than the Company shall mean the capital stock of such Person
with the greatest voting power, or the equity securities or other equity
interest having power to control, or direct the management of, such Person.

              (h) "Common stock equivalents" shall have the meaning set forth in
Section 11(a)(iii) hereof.

              (i) "Continuing Director" shall mean (i) any member of the Board
of Directors of the Company, while such Person is a member of the Board, who is
not an Acquiring Person, an Adverse Person (or a Person with respect to whom the
Continuing Directors are considering making an Adverse Person determination
pursuant to Section 11(a)(ii)(B) hereof), or an Affiliate or Associate of any
such Person, or a representative of any such Person, Affiliate, or Associate,
and who was a member of the Board prior to the date of this Agreement, or (ii)
any Person who subsequently becomes a member of the Board, while such Person is
a member of the Board, who is not an Acquiring Person, an Adverse Person (or a
Person with respect to whom the Continuing Directors are considering making an
Adverse Person determination), or an Affiliate or Associate of any such Person,
or a representative of any such Person, Affiliate or Associate, if such Person's
nomination for election or election to the Board is recommended or approved by a
majority of the Continuing Directors.

              (j) "Current market price" shall have the meaning set forth in
Section 11(d)(i) hereof.

              (k) "Current Value" shall have the meaning set forth in Section
11(a)(iii) hereof.

                                       7
<PAGE>   9
              (l) "Distribution Date" shall have the meaning set forth in
Section 3(a) hereof.

              (m) "Exchange Act" shall mean the Securities Exchange Act of 1934,
as amended.

              (n) "Expiration Date" shall have the meaning set forth in Section
7(a) hereof.

              (o) "Final Expiration Date" shall have the meaning set forth in
Section 7(a) hereof.

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

              (q) "Preferred Stock" shall mean shares of Series C Junior
Participating Preferred Stock, without par value, of the Company, and, to the
extent that there are not a sufficient number of shares of Series C Junior
Participating Preferred Stock authorized to permit the full exercise of the
Rights, any other series of preferred stock, without par value, of the Company
designated for such purpose containing terms substantially similar to the terms
of the Series C Junior Participating Preferred Stock.

              (r) "Principal Party" shall have the meaning set forth in Section
13(b) hereof.

              (s) "Purchase Price" shall have the meaning set forth in Section
4(a) hereof.

              (t) "Record Date" shall have the meaning set forth in the
BACKGROUND clause in the recital to this Agreement.

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<PAGE>   10
              (u) "Redemption Price" shall have the meaning set forth in Section
23(a) hereof.

              (v) "Rights" shall have the meaning set forth in the BACKGROUND
clause in the recital to this Agreement.

              (w) "Rights Certificates" shall have the meaning set forth in
Section 3(a) hereof.

              (x) "Rights Dividend Declaration Date" shall have the meaning set
forth in the BACKGROUND clause in the recital to this Agreement.

              (y) "Section 11(a)(ii) Event" shall mean any event described in
clauses (A) or (B) of Section 11(a)(ii) hereof.

              (z) "Section 11(a)(ii) Trigger Date" shall have the meaning set
forth in Section 11(a)(iii) hereof.

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

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

              (cc) "Spread" shall have the meaning set forth in Section
11(a)(iii) hereof.

              (dd) "Stock Acquisition Date" shall mean the first date of public
announcement (which, for purposes of this definition, shall include, without
limitation, a report filed pursuant to Section 13(d) under the Exchange Act) by
the Company or an Acquiring Person that an Acquiring Person has become such.

                                       9
<PAGE>   11
              (ee) "Subsidiary" shall mean, with reference to any Person, any
corporation of which an amount of voting securities sufficient to elect at least
a majority of the directors of such corporation is beneficially owned, directly
or indirectly, by such Person, or otherwise controlled by such Person.

              (ff) "Substitution Period" shall have the meaning set forth in
Section 11(a)(iii) hereof.

              (gg) "Total Voting Power" on any given date shall mean the total
number of votes eligible to be cast in a general election of directors of the
Company.

              (hh) "Trading Day" shall have the meaning set forth in Section
11(d)(i) hereof.

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

              (jj) "Voting Securities" shall mean any class or classes of
capital stock of the Company entitled to vote generally in the election of
directors.

         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 Common Stock) in accordance with the terms and conditions
hereof, and the Rights Agent hereby accepts such appointment. The Company may
from time to time appoint such Co-Rights Agents as it may deem necessary or
desirable.

         Section 3. Issue of Rights Certificates.

              (a) Until the earliest of (i) the close of business on the
twentieth Business Day after the Stock Acquisition Date, (ii) the close of
business on the twentieth Business Day (or such later date as may be determined
by the Board of Directors) after the date that a tender offer or exchange offer
by any Person (other than the Company, any Subsidiary of the Company, any
employee

                                       10
<PAGE>   12
stock option plan or other employee benefit plan of the Company or of any
Subsidiary of the Company, or any Person or entity organized, appointed, or
established by the Company for or pursuant to the terms of any such plan) is
first published or sent or given within the meaning of Rule 14d-2(a) of the
General Rules and Regulations under the Exchange Act, if, upon consummation
thereof, such Person would be the Beneficial Owner of (x) 19.9% or more of the
shares of Common Stock then outstanding or (y) Voting Securities representing
19.9% or more of the Total Voting Power, or (iii) the close of business on the
twentieth Business Day after the Board of Directors determines, pursuant to the
criteria set forth in Section 11(a)(ii)(B) hereof, that a Person is an Adverse
Person (the earliest of (i), (ii), and (iii) being herein referred to as the
"Distribution Date"), (x) the Rights will be evidenced (subject to the
provisions of paragraph (b) of this Section 3) by the certificates for the
Common Stock registered in the names of the holders of such Common Stock (which
certificates for Common Stock shall be deemed also to be certificates for
Rights) and not by separate certificates, and (y) the Rights will be
transferable only in connection with the transfer of the underlying shares of
Common Stock (including a transfer to the Company). As soon as practicable after
the Distribution Date, the Rights Agent will send by first-class, insured,
postage prepaid mail, to each record holder of the Common Stock as of the close
of business on the Distribution Date, at the address of such holder shown on the
records of the Company, one or more rights certificates, in substantially the
form of Exhibit B hereto (the "Rights Certificates"), evidencing one Right for
each share of Common Stock so held, subject to adjustment as provided herein. In
the event that an adjustment in the number of Rights per share of Common Stock
has been made pursuant to Section 11(p) hereof, at the time of distribution of
the Rights Certificates, the Company shall make the necessary and appropriate
rounding adjustments (in accordance with Section 14(a) hereof) so that Rights
Certificates representing only whole numbers of Rights are distributed and cash
is paid in lieu of any fractional Rights. As of and after the Distribution Date,
the Rights will be evidenced solely by such Rights Certificates.

              (b) As promptly as practicable following the Record Date, the
Company will send a copy of a Summary of Rights, in substantially the form
attached hereto as Exhibit C (the "Summary of Rights"), by postage prepaid mail,
to each record holder of the Common Stock as of the close of business on the
Record Date, at the address of such-holder shown on the records of the Company.

                                       11
<PAGE>   13
              (c) Rights shall be issued in respect of all shares of Common
Stock which are issued (whether originally issued or from the Company's
treasury) after the Record Date but prior to the earlier of the Distribution
Date or the Expiration Date. Certificates representing such shares of Common
Stock shall also be deemed to be certificates for Rights, and shall bear the
following legend:

                  This certificate also evidences and entitles the holder hereof
         to certain Rights as set forth in the Rights Agreement between
         USBANCORP, Inc. (the "Company") and USBANCORP Trust Company, as rights
         agent (the "Rights Agent"), dated as of February 24, 1995 (the "Rights
         Agreement"), the terms of which are hereby incorporated herein by
         reference and a copy of which is on file at the principal offices of
         the Company. Under certain circumstances, as set forth in the Rights
         Agreement, such Rights will be evidenced by separate certificates and
         will no longer be evidenced by this certificate. The Company or the
         Rights Agent will mail to the holder of this certificate a copy of the
         Rights Agreement, as in effect on the date of mailing, without charge
         promptly after receipt of a written request therefor. Under certain
         circumstances set forth in the Rights Agreement, Rights issued to, or
         held by, any Person who is, was or becomes an Acquiring Person, an
         Adverse Person, or any Affiliate or Associate thereof (as such terms
         are defined in the Rights Agreement), whether currently held by or on
         behalf of such Person or by any subsequent holder, may become null and
         void.

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

         Section 4. Form of Rights Certificates.

              (a) The Rights Certificates (and the forms of election to purchase
and of assignment to be printed on the reverse thereof) may have such

                                       12
<PAGE>   14
marks of identification or designation and such legends, summaries, or
endorsements printed thereon as the Company may deem appropriate and as are not
inconsistent with the provisions of this Agreement, or as may be required to
comply with any applicable law or with any rule or regulation made pursuant
thereto or with any rule or regulation of any stock exchange on which the Rights
may from time to time be listed, or to conform to usage. Subject to the
provisions of Section 11 and Section 22 hereof, the Rights Certificates,
whenever distributed, shall be dated as of the Record Date and on their face
shall entitle the holders thereof to purchase such number of one one-hundredths
of a share of Preferred Stock as shall be set forth therein at the price set
forth therein (such exercise price per one one-hundredth of a share, the
"Purchase Price"), but the amount and type of securities purchasable upon the
exercise of each Right and the Purchase Price thereof shall be subject to
adjustment as provided herein.

              (b) Any Rights Certificate issued pursuant to Section 3(a) or
Section 22 hereof that represents Rights beneficially owned by: (i) an Acquiring
Person or an Adverse Person or any Associate or Affiliate of an Acquiring Person
or an Adverse Person, (ii) a transferee of an Acquiring Person or an Adverse
Person (or of any such Associate or Affiliate) who becomes a transferee after
such Acquiring Person or Adverse Person becomes such, or (iii) a transferee of
an Acquiring Person or an Adverse Person (or of any such Associate or Affiliate)
who becomes a transferee prior to or concurrently with the Acquiring Person or
Adverse Person becoming such and receives such Rights pursuant to either (A) a
transfer (whether or not for consideration) from the Acquiring Person or Adverse
Person to holders of equity interests in such Acquiring Person or Adverse Person
or to any Person with whom such Acquiring Person or Adverse Person has any
continuing agreement, arrangement, or understanding regarding the transferred
Rights or (B) a transfer that the Board of Directors of the Company has
determined is part of a plan, arrangement, or understanding which has as a
primary purpose or effect avoidance of Section 7(e) hereof, and any Rights
Certificate issued pursuant to Section 6 or Section 11 hereof upon transfer,
exchange, replacement, or adjustment of any other Rights Certificate referred to
in this sentence, shall contain (to the extent feasible) the following legend:

                  The Rights represented by this Rights Certificate are or were
         beneficially owned by a Person who was or became an [Acquiring Person]

                                       13
<PAGE>   15
         [Adverse Person] or an Affiliate or Associate thereof (as such terms
         are defined in the Rights Agreement). Accordingly, this Rights
         Certificate and the Rights represented hereby may become null and void
         under the circumstances and with the effect specified in Section 7(e)
         of such Agreement.

         Section 5. Countersignature and Registration.

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

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

                                       14
<PAGE>   16
         Section 6. Transfer, Split Up, Combination, or Exchange of Rights
Certificates; Mutilated, Destroyed, Lost, or Stolen Rights Certificates.

              (a) Subject to the provisions of Section 4(b), Section 7(e),
Section 14, and Section 24 hereof, at any time after the close of business on
the Distribution Date, and at or prior to the close of business on the
Expiration Date, any Rights Certificate may be transferred, split up, combined,
or exchanged for another Rights Certificate entitling the registered holder to
purchase a like number of one one-hundredths of a share of Preferred Stock (or,
following a Triggering Event, Common Stock, other securities, cash, or other
assets, as the case may be) as the Rights Certificate surrendered then entitled
such holder (or former holder in the case of a transfer) to purchase. Any
registered holder desiring to transfer, split up, combine, or exchange any
Rights Certificate shall make such request in writing delivered to the Rights
Agent, and shall surrender the Rights Certificate to be transferred, split up,
combined, or exchanged at the principal office or offices of the Rights Agent
designated for such purpose. Neither the Rights Agent nor the Company shall be
obligated to take any action whatsoever with respect to the transfer of any such
surrendered Rights Certificate until the registered holder shall have completed
and signed the certificate contained in the form of assignment on the reverse
side of such Rights Certificate and shall have provided such additional evidence
of the identity of the Beneficial Owner (or former Beneficial Owner) or
Affiliates or Associates thereof as the Company shall reasonably request.
Thereupon the Rights Agent shall, subject to Section 4(b), Section 7(e), and
Section 14 hereof, countersign and deliver to the Person entitled thereto a
Rights Certificate as so requested. The Company may require payment of a sum
sufficient to cover any tax or governmental charge that may be imposed in
connection with any transfer, split up, combination, or exchange of Rights
Certificates.

              (b) Upon receipt by the Company and the Rights Agent of evidence
reasonably satisfactory to them of the loss, theft, destruction, or mutilation
of a Rights Certificate, and, in case of loss, theft, or destruction, of
indemnity or security reasonably satisfactory to them, and reimbursement to the
Company and the Rights Agent of all reasonable expenses incidental thereto, and
upon surrender to the Rights Agent and cancellation of the Rights Certificate if

                                       15
<PAGE>   17
mutilated, the Company will execute and deliver a new Rights Certificate of like
tenor to the Rights Agent for countersignature and delivery to the registered
owner in lieu of the Rights Certificate so lost, stolen, destroyed, or
mutilated.

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

              (a) Subject to Section 7(e) hereof, the registered holder of any
Rights Certificate may exercise the Rights evidenced thereby (except as
otherwise provided herein including, without limitation, the restrictions on
exercisability set forth in Section 9(c), Section 11(a)(iii), and Section 23(a)
hereof) in whole or in part at any time after the Distribution Date upon
surrender of the Rights Certificate, with the form of election to purchase and
the certificate on the reverse side thereof duly executed, to the Rights Agent
at the principal office or offices of the Rights Agent designated for such
purpose, together with payment of the aggregate Purchase Price with respect to
the total number of one one-hundredths of a share (or other securities, cash, or
other assets, as the case may be) as to which such surrendered Rights are then
exercisable, at or prior to the earliest of (i) the close of business on
February 23, 2005 (the "Final Expiration Date"), (ii) the time at which the
Rights are redeemed as provided in Section 23 hereof (the earlier of (i) and
(ii) being herein referred to as the "Expiration Date"), 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 share of
Preferred Stock pursuant to the exercise of a Right shall initially be
Sixty-Five Dollars ($65.00), and shall be subject to adjustment from time to
time as provided in Sections 11 and 13(a) hereof and shall be payable in
accordance with paragraph (c) below.

              (c) Upon receipt of a Rights Certificate representing exercisable
Rights, with the form of election to purchase and the certificate on the reverse
side thereof duly executed, accompanied by payment, with respect to each Right
so exercised, of the Purchase Price per one one-hundredth of a share of
Preferred Stock (or other shares, securities, cash, or other assets, as the case
may be) to be purchased as set forth below and an amount equal to any applicable

                                       16
<PAGE>   18
transfer tax, the Rights Agent shall, subject to Section 20(k) hereof, thereupon
promptly (i) (A) requisition from any transfer agent of the shares of Preferred
Stock (or make available, if the Rights Agent is the transfer agent for such
shares) certificates for the total number of one one-hundredths of a share of
Preferred Stock to be purchased and the Company hereby irrevocably authorizes
its transfer agent to comply with all such requests, or (B) if the Company shall
have elected to deposit the total number of shares of Preferred Stock issuable
upon exercise of the Rights hereunder with a depositary agent, requisition from
the depositary agent depositary receipts representing such number of
one-hundredths of a share of Preferred Stock as are to be purchased (in which
case certificates for the shares of Preferred Stock represented by such receipts
shall be deposited by the transfer agent with the depositary agent) and the
Company will direct the depositary agent to comply with such request, (ii)
requisition from the Company the amount of cash, if any, to be paid in lieu of
fractional shares in accordance with Section 14 hereof, (iii) after receipt of
such certificates or depositary receipts, cause the same to be delivered to or
upon the order of the registered holder of such Rights Certificate, registered
in such name or names as may be designated by such holder, and (iv) after
receipt thereof, deliver such cash, if any, to or upon the order of the
registered holder of such Rights Certificate. The payment of the Purchase Price
(as such amount may be reduced pursuant to Section 11(a)(iii) hereof) shall be
made in cash or by certified bank check or bank draft payable to the order of
the Company. In the event that the Company is obligated to issue other
securities (including Common Stock) of the Company, pay cash, and/or distribute
other property pursuant to Section 11(a) hereof, the Company will make all
arrangements necessary so that such other securities, cash, and/or other
property are available for distribution by the Rights Agent, if and when
appropriate. The Company reserves the right to require prior to the occurrence
of a Triggering Event that, upon any exercise of Rights, a number of Rights be
exercised so that only whole shares of Preferred Stock would be issued.

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

                                       17
<PAGE>   19
              (e) Notwithstanding anything in this Agreement to the contrary,
from and after the first occurrence of a Section 11(a)(ii) Event, any Rights
beneficially owned by (i) an Acquiring Person, an Adverse Person, or an
Associate or Affiliate of an Acquiring Person or an Adverse Person, (ii) a
direct or indirect transferee of an Acquiring Person or an Adverse Person (or of
any such Associate or Affiliate) who becomes a transferee after the Acquiring
Person or Adverse Person becomes such, or (iii) a direct or indirect transferee
of an Acquiring Person or an Adverse Person (or of any such Associate or
Affiliate) who becomes a transferee prior to or concurrently with the Acquiring
Person or Adverse Person becoming such and receives such Rights pursuant to
either (A) a transfer (whether or not for consideration) from the Acquiring
Person or Adverse Person to holders of equity interests in such Acquiring Person
or Adverse Person or to any Person with whom the Acquiring Person or Adverse
Person has any continuing agreement, arrangement, or understanding regarding the
transferred Rights or (B) a transfer which the Board of Directors of the Company
has determined is part of a plan, arrangement or understanding which has as a
primary purpose or effect the avoidance of this Section 7(e), shall become null
and void without any further action and no holder of such Rights shall have any
rights whatsoever with respect to such Rights, whether under any provision of
this Agreement or otherwise. The Company shall use all reasonable efforts to
insure that the provisions of this Section 7(e) and Section 4(b) hereof are
complied with, but shall have no liability to any holder of Rights Certificates
or other Person as a result of its failure to make any determinations with
respect to an Acquiring Person or an Adverse Person or any of their respective
Affiliates, Associates, or transferees hereunder.

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

                                       18
<PAGE>   20
         Section 8. Cancellation and Destruction of Rights Certificates. All
Rights Certificates surrendered for the purpose of exercise, transfer, split up,
combination, or exchange shall, if surrendered to the Company or any of its
agents, be delivered to the Rights Agent for cancellation or in cancelled form,
or, if surrendered to the Rights Agent, shall be cancelled by it, and no Rights
Certificates shall be issued in lieu thereof except as expressly permitted by
any of the provisions of this Agreement. The Company shall deliver to the Rights
Agent for cancellation and retirement, and the Rights Agent shall so cancel and
retire, any other Rights Certificate purchased or acquired by the Company
otherwise than upon the exercise thereof. The Rights Agent shall deliver all
cancelled Rights Certificates to the Company, or shall, at the written request
of the Company, destroy such cancelled Rights Certificates, and in such case
shall deliver a certificate of destruction thereof to the Company.

         Section 9. Reservation and Availability of Capital Stock.

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

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

                                       19
<PAGE>   21
              (c) The Company shall use its best efforts to (i) file, as soon as
practicable following the first occurrence of a Section 11(a)(ii) Event, or, if
applicable, as soon as practicable following the earliest date after the first
occurrence of a Section 11(a)(ii) Event on which the consideration to be
delivered by the Company upon exercise of the Rights has been determined in
accordance with Section 11(a)(iii) hereof, a registration statement on an
appropriate form under the Securities Act, with respect to the securities
purchasable upon exercise of the Rights, (ii) cause such registration statement
to become effective as soon as practicable after such filing, and (iii) cause
such registration statement to remain effective (with a prospectus at all times
meeting the requirements of the Securities Act) until the earlier of (A) the
date as of which the Rights are no longer exercisable for such securities, and
(B) the date of the expiration of the Rights. The Company will also take such
action as may be appropriate under, or to ensure compliance with, the securities
or "blue sky" laws of the various states in connection with the exercisability
of the Rights. The Company may temporarily suspend, for a period of time not to
exceed ninety (90) days after the date set forth in clause (i) of the first
sentence of this Section 9(c), the exercisability of the Rights in order to
prepare and file such registration statement and permit it to become effective.
Upon any such suspension, the Company shall issue a public announcement stating
that the exercisability of the Rights has been temporarily suspended, as well as
a public announcement at such time as the suspension is no longer in effect. In
addition, if the Company shall determine that a registration statement is
required following the Distribution Date, the Company may temporarily suspend
the exercisability of the Rights until such time as a registration statement has
been declared effective. Notwithstanding any provision of this Agreement to the
contrary, the Rights shall not be exercisable in any jurisdiction if the
requisite qualification in such jurisdiction shall not have been obtained, the
exercise thereof shall not be permitted under applicable law, or a registration
statement shall not have been declared effective.

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

                                       20
<PAGE>   22
              (e) The Company further covenants and agrees that it will pay when
due and payable any and all federal and state transfer taxes and charges which
may be payable in respect of the issuance or delivery of the Rights Certificates
and of any certificates for a number of one one-hundredths of a share of
Preferred Stock (or Common Stock and/or other securities, as the case may be)
upon the exercise of Rights. The Company shall not, however, be required to pay
any transfer tax which may be payable in respect of any transfer or delivery of
Rights Certificates to a Person other than, or the issuance or delivery of a
number of one one-hundredths of a share of Preferred Stock (or Common Stock
and/or other securities, as the case may be) in respect of a name other than
that of, the registered holder of the Rights Certificates evidencing Rights
surrendered for exercise or to issue or deliver any certificates for a number of
one one-hundredths of a share of Preferred Stock (or Common Stock and/or other
securities, as the case may be) in a name other than that of the registered
holder upon the exercise of any Rights until such tax shall have been paid (any
such tax being payable by the holder of such Rights Certificate at the time of
surrender) or until it has been established to the Company's satisfaction that
no such tax is due.

         Section 10. Preferred Stock Record Date. Each person in whose name any
certificate for a number of one one-hundredths of a share of Preferred Stock (or
Common Stock and/or other securities, as the case may be) is issued upon the
exercise of Rights shall for all purposes be deemed to have become the holder of
record of such fractional shares of Preferred Stock (or Common Stock and/or
other securities, as the case may be) represented thereby on, and such
certificate shall be dated, the date upon which the Rights Certificate
evidencing such Rights was duly surrendered and payment of the Purchase Price
(and all applicable transfer taxes) was made; provided, however, that if the
date of such surrender and payment is a date upon which the Preferred Stock (or
Common Stock and/or other securities, as the case may be) transfer books of the
Company are closed, such Person shall be deemed to have become the record holder
of such shares (fractional or otherwise) on, and such certificate shall be
dated, the next succeeding Business Day on which the Preferred Stock (or Common
Stock and/or other securities, as the case may be) transfer books of the Company
are open. Prior to the exercise of the Rights evidenced thereby, the holder of a
Rights Certificate shall not be entitled to any rights of a shareholder of the
Company with respect to shares for which the Rights shall be exercisable,
including, without limitation, the

                                       21
<PAGE>   23
right to vote, to receive dividends, or other distributions or to exercise any
preemptive rights, and shall not be entitled to receive any notice of any
proceedings of the Company, except as provided herein.

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

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

                                       22
<PAGE>   24
                  (ii) Subject to Section 24 of this Agreement, in the event:

                           (A) any Person shall at any time after the Rights
                  Dividend Declaration Date become an Acquiring Person, unless
                  the event causing such Person to become an Acquiring Person
                  (I) is a transaction set forth in Section 13(a) hereof, or
                  (II) is an acquisition of shares of Common Stock and/or Voting
                  Securities pursuant to a tender offer or an exchange offer for
                  all outstanding shares of Common Stock and other Voting
                  Securities, if any, at a price and on terms determined by at
                  least a majority of the Continuing Directors who are not
                  representatives, nominees, Affiliates or Associates of an
                  Acquiring Person, after receiving advice from one or more
                  investment banking firms, to be (x) at a price which is fair
                  to shareholders (taking into account all factors which the
                  Board of Directors deems relevant including, without
                  limitation, prices which could reasonably be achieved if the
                  Company or its assets were sold on an orderly basis designed
                  to realize maximum value) and (y) otherwise in the best
                  interests of the Company and its shareholders; or

                           (B) the Board of Directors of the Company shall
                  declare any Person to be an Adverse Person, upon a
                  determination that such Person, alone or together with its
                  Affiliates and Associates, has, at any time after the Rights
                  Dividend Declaration Date, become the beneficial owner of
                  Voting Securities representing at least 10% of the Total
                  Voting Power and a determination, after reasonable inquiry and
                  investigation, including consultation with such persons as the
                  Board of Directors shall deem appropriate, that such
                  beneficial ownership by such Person is (1) intended to cause
                  the Company to repurchase the Voting Securities beneficially
                  owned by such Person or to cause pressure on the Company to
                  take action or enter into a transaction or series of
                  transactions intended to provide such Person (and not
                  shareholders generally) with short-term financial gain under
                  circumstances where the Board of Directors determines that the
                  best long-term interests of the Company and its shareholders
                  would not be served by taking such action or entering into
                  such transaction or series

                                       23
<PAGE>   25
                  of transactions at that time or (2) causing or reasonably
                  likely to cause a material adverse impact (including, but not
                  limited to, impairment of relationships with customers,
                  impairment of the Company's business reputation or impairment
                  of the Company's ability to maintain its competitive position)
                  on the business or prospects of the Company; or

                           (C) any Acquiring person or any Associate or
                  Affiliate of any Acquiring Person, at any time after the date
                  of this Agreement, directly or indirectly, (1) shall merge
                  into the Company or otherwise combine with the Company and the
                  Company shall be the continuing or surviving corporation of
                  such merger or combination and the Voting Securities of the
                  Company shall remain outstanding and unchanged, (2) shall, in
                  one transaction or a series of transactions, other than in
                  connection with the exercise of the Rights or the exercise or
                  conversion of securities exercisable or convertible into
                  capital stock of the Company or any of its Subsidiaries,
                  transfer any assets to the Company or to any of its
                  Subsidiaries in exchange (in whole or in part) for shares of
                  Voting Securities, for shares of other equity securities of
                  the Company, or for securities exercisable for or convertible
                  into shares of equity securities of the Company (Common Stock
                  or otherwise) or otherwise obtain from the Company, with or
                  without consideration, any additional shares of such equity
                  securities or securities exercisable for or convertible into
                  shares of such equity securities (other than pursuant to a pro
                  rata distribution to all holders of Common Stock), (3) shall
                  sell, purchase, lease, exchange, mortgage, pledge, transfer,
                  or otherwise acquire or dispose of, in one transaction or a
                  series of transactions, to, from, with, or of (as the case may
                  be) the Company or any of its Subsidiaries, assets on terms
                  and conditions less favorable to the Company than the Company
                  would be able to obtain in arm's-length negotiation with an
                  unaffiliated third party, other than pursuant to a transaction
                  set forth in Section 13(a) hereof, (4) shall receive any
                  compensation from the Company or any of the Company's
                  Subsidiaries other than compensation for services as a
                  director or for full-time employment as a regular employee at
                  rates in accordance with the Company's (or its Subsidiaries')
                  past practices, or (5) shall receive the benefit, directly or
                  indirectly (except proportionately as a shareholder and except
                  if resulting from a

                                       24
<PAGE>   26
                  requirement of law or governmental regulation), of any loans,
                  advances, guarantees, pledges, or other financial assistance
                  or any tax credits or other tax advantage provided by the
                  Company or any of its Subsidiaries; or

                           (D) during such time as there is an Acquiring Person,
                  there shall be any reclassification of securities (including
                  any reverse stock split), or recapitalization of the Company,
                  or any merger or consolidation of the Company with any of its
                  Subsidiaries or any other transaction or series of
                  transactions involving the Company or any of its Subsidiaries,
                  other than a transaction or transactions to which the
                  provisions of Section 13(a) apply (whether or not with or into
                  or otherwise involving an Acquiring Person) which has the
                  effect, directly or indirectly, of increasing by more than 1%
                  the proportionate share of the outstanding shares of any class
                  of equity securities of the Company or any of its Subsidiaries
                  which is directly or indirectly beneficially owned by any
                  Acquiring Person or any Associate or Affiliate of any
                  Acquiring Person;

         then, promptly following the first occurrence of a Section 11(a)(ii)
         Event, proper provision shall be made so that each holder of a Right
         (except as provided below and in Section 7(e) hereof) shall thereafter
         have the right to receive, upon exercise thereof at the then current
         Purchase Price in accordance with the terms of this Agreement, in lieu
         of a number of one one-hundredths of a share of Preferred Stock, such
         number of shares of Common Stock of the Company as shall equal the
         result obtained by (x) multiplying the then current Purchase Price by
         the then number of one one-hundredths of a share of Preferred Stock for
         which a Right was exercisable immediately prior to the first occurrence
         of a Section 11(a)(ii) Event, and (y) dividing that product (which,
         following such first occurrence, shall thereafter be referred to as the
         "Purchase Price" for each Right and for all purposes of this Agreement)
         by 50% of the lowest closing price (as determined pursuant to the
         second sentence of Section 11(d)(i) hereof) per share of Common Stock
         on any Trading Day (as defined in Section 11(d)(i) hereof) occurring
         within the twelve-month period immediately preceding the date of such
         first occurrence (such number of shares, the "Adjustment Shares").

                                       25
<PAGE>   27
                  (iii) In the event that (a) the number of shares of Common
         Stock which are authorized by the Company's Articles of Incorporation
         but not outstanding or reserved for issuance for purposes other than
         upon exercise of the Rights are not sufficient to permit the exercise
         in full of the Rights in accordance with the foregoing subparagraph
         (ii) of this Section 11(a), or (b) the quotient (the "Quotient")
         obtained by dividing the Purchase Price by the number of Adjustment
         Shares issuable upon exercise of a Right is less than the then par
         value per share of the Common Stock, the Company shall, to the extent
         permitted by applicable law and regulation and subject to such
         limitations as are necessary to prevent a default under any agreement
         to which the Company is a party: (A) determine the excess of (1) the
         value of the Adjustment Shares issuable upon the exercise of a Right
         (the "Current Value") over (2) the Purchase Price (such excess, the
         "Spread"), and (B) with respect to each Right, make adequate provision
         to substitute for the Adjustment Shares, upon payment of the applicable
         Purchase Price, (1) cash, (2) a reduction in the Purchase Price, (3)
         Common Stock or other equity securities of the Company (including,
         without limitation, shares, or units of shares, of preferred stock
         which the Board of Directors of the Company has deemed to have the same
         value as shares of Common Stock (such shares of preferred stock,
         "common stock equivalents")), (4) debt securities of the Company, (5)
         other assets, or (6) any combination of the foregoing, having an
         aggregate value equal to the Current Value, where such aggregate value
         has been determined by the Board of Directors of the Company based upon
         the advice of a nationally recognized investment banking firm selected
         by the Board of Directors of the Company; provided, however, if the
         Company shall not have made adequate provision to deliver value
         pursuant to clause (B) above within 30 days following the later of (x)
         the first occurrence of a Section 11(a)(ii) Event and (y) the date on
         which the Company's right of redemption pursuant to Section 23(a)
         expires (the later of (x) and (y) being referred to herein as the
         "Section 11(a)(ii) Trigger Date"), then the Company shall be obligated
         to deliver, upon the surrender for exercise of a Right and without
         requiring payment of the Purchase Price, shares of Common Stock (to the
         extent available) and then, if necessary, cash, which shares and/or
         cash have an aggregate value equal to the Spread. If the Board of
         Directors of the Company shall determine in good faith that it is
         likely that (a) sufficient additional shares of Common Stock could be
         authorized for issuance upon

                                       26
<PAGE>   28
         exercise in full of the Rights or (b) a reduction in the par value per
         share of Common Stock to an amount that is equal to or less than the
         Quotient could be authorized, the 30 day period set forth above may be
         extended to the extent necessary, but not more than 90 days after the
         Section 11(a)(ii) Trigger Date, in order that the Company may seek
         shareholder approval for the authorization of such additional shares or
         for the reduction of such par value, as the case may be (such period,
         as it may be extended, the "Substitution Period"). To the extent that
         the Company determines that some action need be taken pursuant to the
         first and/or second sentences of this Section 11(a)(iii), the Company
         (x) shall provide, subject to Section 7(e) hereof, that such action
         shall apply uniformly to all outstanding Rights, and (y) may suspend
         the exercisability of the Rights until the expiration of the
         Substitution Period in order to seek any authorization of additional
         shares or reduction in par value and/or to decide the appropriate form
         of distribution to be made pursuant to such first sentence and to
         determine the value thereof. In the event of any such suspension, the
         Company shall issue a public announcement stating that the
         exercisability of the Rights has been temporarily suspended, as well as
         a public announcement at such time as the suspension is no longer in
         effect. For purposes of this Section 11(a)(iii), the value of the
         Common Stock shall be the current market price (as determined pursuant
         to Section 11(d) hereof) per share of the Common Stock on the Section
         11(a)(ii) Trigger Date and the value of any "common stock equivalent"
         shall be deemed to have the same value as the Common Stock on such
         date.

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

                                       27
<PAGE>   29
fraction, the numerator of which shall be the number of shares of Preferred
Stock outstanding on such record date, plus the number of shares of Preferred
Stock which the aggregate offering price of the total number of shares of
Preferred Stock and/or equivalent preferred stock so to be offered (and/or the
aggregate initial conversion price of the convertible securities so to be
offered) would purchase at such current market price, and the denominator of
which shall be the number of shares of Preferred Stock outstanding on such
record date, plus the number of additional shares of Preferred Stock and/or
equivalent preferred stock to be offered for subscription or purchase (or into
which the convertible securities so to be offered are initially convertible). In
case such subscription price may be paid by delivery of consideration part or
all of which may be in a form other than cash, the value of such consideration
shall be as determined in good faith by the Board of Directors of the Company,
whose determination shall be described in a statement filed with the Rights
Agent and shall be binding on the Rights Agent and the holders of the Rights.
Shares of Preferred Stock owned by or held for the account of the Company shall
not be deemed outstanding for the purpose of any such computation. Such
adjustment shall be made successively whenever such a record date is fixed, and
in the event that such rights or warrants are not so issued, the Purchase Price
shall be adjusted to be the Purchase Price which would then be in effect if such
record date had not been fixed.

              (c) In case the Company shall fix a record date for a distribution
to all holders of Preferred Stock (including any such distribution made in
connection with a consolidation or merger in which the Company is the continuing
corporation) of evidences of indebtedness, cash (other than a regular quarterly
cash dividend out of the earnings or retained earnings of the Company), assets
(other than a dividend payable in Preferred Stock, but including any dividend
payable in stock other than Preferred Stock) or subscription rights or warrants
(excluding those referred to in Section 11(b) hereof), the Purchase Price to be
in effect after such record date shall be determined by multiplying the Purchase
Price in effect immediately prior to such record date by a fraction, the
numerator of which shall be the current market price (as determined pursuant to
Section 11(d) hereof) per share of Preferred Stock on such record date, less the
fair market value (as determined in good faith by the Board of Directors of the
Company, whose determination shall be described in a statement filed with the
Rights Agent) of the portion of the cash, assets, or evidences of indebtedness
so to be distributed or of such subscription rights or warrants applicable to a
share of

                                       28
<PAGE>   30
Preferred Stock and the denominator of which shall be such current market price
(as determined pursuant to Section 11(d) hereof) per share of Preferred Stock.
Such adjustments shall be made successively whenever such a record date is
fixed, and in the event that such distribution is not so made, the Purchase
Price shall be adjusted to be the Purchase Price which would have been in effect
if such record date had not been fixed.

                  (i) For the purpose of any computation hereunder, other than
         computations made pursuant to Section 11(a)(iii) hereof, the "current
         market price" per share of Common Stock on any date shall be deemed to
         be the average of the daily closing prices per share of such Common
         Stock for the 30 consecutive Trading Days (as such term is hereinafter
         defined) immediately prior to such date, and for purposes of
         computations made pursuant to Section 11(a)(iii) hereof, the "current
         market price" per share of Common Stock on any date shall be deemed to
         be the average of the daily closing prices per share of such Common
         Stock for the 10 consecutive Trading Days immediately following such
         date; provided, however, that in the event that the current market
         price per share of the Common Stock is determined during a period
         following the announcement by the issuer of such Common Stock of (A) a
         dividend or distribution on such Common Stock payable in shares of such
         Common Stock or securities convertible into shares of such Common Stock
         (other than the Rights), or (B) any subdivision, combination, or
         reclassification of such Common Stock, and the ex-dividend date for
         such dividend or distribution, or the record date for such subdivision,
         combination or reclassification shall not have occurred prior to the
         commencement of the requisite 30 Trading Day or 10 Trading Day period,
         as set forth above, then, and in each such case, the "current market
         price" shall be properly adjusted to take into account ex-dividend
         trading. The closing price for each day shall be the last sale price,
         regular way, or, in case no such sale takes place on such day, the
         average of the closing bid and asked prices, regular way, in either
         case as reported in the principal consolidated transaction reporting
         system with respect to securities listed or admitted to trading on the
         New York Stock Exchange or, if the shares of Common Stock are not
         listed or admitted to trading on the New York Stock Exchange, as
         reported in the principal consolidated transaction reporting system
         with respect to securities listed on the principal national securities
         exchange on which the shares of Common Stock are listed or

                                       29
<PAGE>   31
         admitted to trading or, if the shares of Common Stock are not listed or
         admitted to trading on any national securities exchange, the last
         quoted price or, if not so quoted, the average of the high bid and low
         asked prices in the over-the-counter market, as reported by the
         National Association of Securities Dealers, Inc. Automated Quotation
         System ("NASDAQ") or such other system then in use, or, if on any such
         date the shares of Common Stock are not quoted by any such
         organization, the average of the closing bid and asked prices as
         furnished by a professional market maker making a market in the Common
         Stock selected by the Board of Directors of the Company. If on any such
         date no market maker is making a market in the Common Stock, the fair
         value of such shares on such date as determined in good faith by the
         Board of Directors of the Company shall be used. The term "Trading Day"
         shall mean a day on which the principal national securities exchange on
         which the shares of Common Stock are listed or admitted to trading is
         open for the transaction of business or, if the shares of Common Stock
         are not listed or admitted to trading on any national securities
         exchange, a Business Day. If the Common Stock is not publicly held or
         not so listed or traded, "current market price" per share shall mean
         the fair value per share as determined in good faith by the Board of
         Directors of the Company, whose determination shall be described in a
         statement filed with the Rights Agent and shall be conclusive for all
         purposes.

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

                                       30
<PAGE>   32
         faith by the Board of Directors of the Company, whose determination
         shall be described in a statement filed with the Rights Agent and shall
         be conclusive for all purposes. For all purposes of this Agreement, the
         "current market price" of one one-hundredth of a share of Preferred
         Stock shall be equal to the "current market price" of one share of
         Preferred Stock divided by 100.

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

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

              (f) 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

                                       31
<PAGE>   33
share of Preferred Stock purchasable from time to time hereunder upon exercise
of the Rights, all subject to further adjustment as provided herein.

              (g) Unless the Company shall have exercised its election as
provided in Section 11(i), upon each adjustment of the Purchase Price as a
result of the calculations made in Sections 11(b) and (c), each Right
outstanding immediately prior to the making of such adjustment shall thereafter
evidence the right to purchase, at the adjusted Purchase Price, that number of
one one-hundredths of a share of Preferred Stock (calculated to the nearest
one-millionth) obtained by (i) multiplying (x) the number of one one-hundredths
of a share covered by a Right immediately prior to this adjustment, by (y) the
Purchase Price in effect immediately prior to such adjustment of the Purchase
Price, and (ii) dividing the product so obtained by the Purchase Price in effect
immediately after such adjustment of the Purchase Price.

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

                                       32
<PAGE>   34
result of such adjustment, or, at the option of the Company, shall cause to be
distributed to such holders of record in substitution and replacement for the
Rights Certificates held by such holders prior to the date of adjustment, and
upon surrender thereof, if required by the Company, new Rights Certificates
evidencing all the Rights to which such holders shall be entitled after such
adjustment. Rights Certificates so to be distributed shall be issued, executed,
and countersigned in the manner provided for herein (and may bear, at the option
of the Company, the adjusted Purchase Price) and shall be registered in the
names of the holders of record of Rights Certificates on the record date
specified in the public announcement.

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

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

              (k) In any case in which this Section 11 shall require that an
adjustment in the Purchase Price be made effective as of a record date for a
specified event, the Company may elect to defer until the occurrence of such
event the issuance to the holder of any Right exercised after such record date
the number of one one-hundredths of a share of Preferred Stock and other capital
stock or securities of the Company, if any, issuable upon such exercise over and
above the number of one one-hundredths of a share of Preferred Stock and other
capital stock or securities of the Company, if any, issuable upon such exercise
on the basis of the Purchase Price in effect prior to such adjustment; provided,
however, that the

                                       33
<PAGE>   35
Company shall deliver to such holder a due bill or other appropriate instrument
evidencing such holder's right to receive such additional shares (fractional or
otherwise) or securities upon the occurrence of the event requiring such
adjustment.

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

              (m) The Company covenants and agrees that it shall not, at any
time after the Distribution Date, (i) consolidate with any other Person (other
than a Subsidiary of the Company in a transaction which complies with Section
11(o) hereof), (ii) merge with or into any other Person (other than a Subsidiary
of the Company in a transaction which complies with Section 11(o) hereof), or
(iii) sell or transfer (or permit any Subsidiary to sell or transfer), in one
transaction, or a series of related transactions, assets or earning power
aggregating more than 50% of the assets or earning power of the Company and its
Subsidiaries (taken as a whole) to any other Person or Persons (other than the
Company and/or any of its Subsidiaries in one or more transactions each of which
complies with Section 11(o) hereof), if (x) at the time of or immediately after
such consolidation, merger, or sale there are any rights, warrants, or, other
instruments or securities outstanding or agreements in effect which would
substantially diminish or otherwise eliminate the benefits intended to be
afforded by the Rights or (y) prior to, simultaneously with, or immediately
after such consolidation, merger, or sale, the shareholders of the Person who
constitutes, or would constitute, the "Principal Party" for purposes of Section
13(a) hereof shall have received a distribution of Rights previously owned by
such Person or any of its Affiliates and Associates.

                                       34
<PAGE>   36
              (n) The Company covenants and agrees that, after the Distribution
Date, it will not, except as permitted by Section 27 hereof, take (or permit any
Subsidiary to take) any action if at the time such action is taken it is
reasonably foreseeable that such action will diminish substantially or otherwise
eliminate the benefits intended to be afforded by the Rights.

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

              (p) The failure by the Board of Directors to declare a Person to
be an Adverse Person following such Person becoming the Beneficial Owner of
Voting Securities representing 10% or more of the Total Voting Power shall not
imply that such Person is not an Adverse Person or limit the Board of Directors'
right at any time in the future to declare such Person to be an Adverse Person.

         Section 12. Certificate of Adjusted Purchase Price or Number of Shares.
Whenever an adjustment is made as provided in Section 11 and Section 13 hereof,
the Company shall (a) promptly prepare a certificate setting forth such
adjustment and a brief statement of the facts accounting for such adjustment,
(b) promptly file with the Rights Agent, and with each transfer agent for the

                                       35
<PAGE>   37
Preferred Stock and the Common Stock, a copy of such certificate, and (c) mail a
brief summary thereof to each holder of a Rights Certificate (or, if prior to
the Distribution Date, to each holder of a certificate representing shares of
Common Stock) in accordance with Section 26 hereof. The Rights Agent shall be
fully protected in relying on any such certificate and on any adjustment therein
contained.

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

              (a) In the event that, following the Stock Acquisition Date,
directly or indirectly, (x) the Company shall consolidate with, or merge with
and into, any other Person (other than a Subsidiary of the Company in a
transaction which complies with Section 11(o) hereof), and the Company shall not
be the continuing or surviving corporation of such consolidation or merger, (y)
any Person (other than a Subsidiary of the Company in a transaction which
complies with Section 11(o) hereof) shall consolidate with, or merge with or
into, the Company, and the Company shall be the continuing or surviving
corporation of such consolidation or merger and, in connection with such
consolidation or merger, all or part of the outstanding shares of Voting
Securities shall be changed into or exchanged for stock or other securities of
any other Person or cash or any other property, or (z) the Company shall sell or
otherwise transfer (or one or more of its Subsidiaries shall sell or otherwise
transfer), in one transaction or a series of related transactions, assets or
earning power aggregating more than 50% of the assets or earning power of the
Company and its Subsidiaries (taken as a whole) to any Person or Persons (other
than the Company or any Subsidiary of the Company in one or more transactions
each of which complies with Section 11(o) hereof); then, and in each such case
(except as may be contemplated by Section 13(d) hereof), proper provision shall
be made so that: (i) each holder of a Right, except as provided in Section 7(e)
hereof, shall thereafter have the right to receive, upon the exercise thereof at
the then current Purchase Price in accordance with the terms of this Agreement,
such number of validly authorized and issued, fully paid, nonassessable, and
freely tradeable shares of Common Stock of the Principal Party (as such term is
hereinafter defined), not subject to any liens, encumbrances, rights of first
refusal, or other adverse claims, as shall be equal to the result obtained by
(1) multiplying the then current Purchase Price by the number of one
one-

                                       36
<PAGE>   38
hundredths of a share of Preferred Stock for which a Right is exercisable
immediately prior to the first occurrence of a Section 13 Event (or, if a
Section 11(a)(ii) Event has occurred prior to the first occurrence of a Section
13 Event, multiplying the number of such one one-hundredths of a share for which
a Right was exercisable immediately prior to the first occurrence of a Section
11(a)(ii) Event by the Purchase Price in effect immediately prior to such first
occurrence), and dividing that product (which, following the first occurrence of
a Section 13 Event, shall be referred to as the "Purchase Price" for each Right
and for all purposes of this Agreement) by (2) 50% of the current market price
(determined pursuant to Section 11(d)(i) hereof) per share of the Common Stock
of such Principal Party on the date of consummation of such Section 13 Event;
(ii) such Principal Party shall thereafter be liable for, and shall assume, by
virtue of such Section 13 Event, all the obligations and duties of the Company
pursuant to this Agreement; (iii) the term "Company" shall thereafter be deemed
to refer to such Principal Party, it being specifically intended that the
provisions of Section 11 hereof shall apply only to such Principal Party
following the first occurrence of a Section 13 Event; (iv) such Principal Party
shall take such steps (including, but not limited to, the reservation of a
sufficient number of shares of its Common Stock) in connection with the
consummation of any such transaction as may be necessary to assure that the
provisions hereof shall thereafter be applicable, as nearly as reasonably may
be, in relation to its shares of Common Stock thereafter deliverable upon the
exercise of the Rights; and (v) the provisions of Section 11(a)(ii) hereof shall
be of no effect following the first occurrence of any Section 13 Event.

              (b) "Principal Party" shall mean (i) in the case of any
transaction described in clause (x) or (y) of the first sentence of Section
13(a), the Person that is the issuer of any securities into which shares of
Common Stock of the Company are converted in such merger or consolidation and if
no securities are so issued, the Person that is the other party to such merger
or consolidation and (ii) in the case of any transaction described in clause (z)
of the first sentence of Section 13(a), the Person that is the party receiving
the greatest portion of the assets or earning power transferred pursuant to such
transaction or transactions; provided, however, that in any such case, (1) if
the Common Stock of such Person is not at such time and has not been
continuously over the preceding 12 month period registered under Section 12 of
the Exchange Act, and such Person is a direct or indirect Subsidiary of another
Person the Common Stock of which is and has been so registered, "Principal
Party" shall refer to such other Person; and (2) in

                                       37
<PAGE>   39
case such Person is a Subsidiary, directly or indirectly, of more than one
Person, the Common Stock of two or more of which are and have been so
registered, "Principal Party" shall refer to whichever of such Persons is the
issuer of the Common Stock having the greatest aggregate market value.

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

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

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

The provisions of this Section 13 shall similarly apply to successive mergers or
consolidations or sales or other transfers. In the event that a Section 13 Event
shall occur at any time after the occurrence of a Section 11(a)(ii) Event, the
Rights which have not theretofore been exercised shall thereafter become
exercisable in the manner described in Section 13(a).

                                       38
<PAGE>   40
              (d) Notwithstanding anything in this Agreement to the contrary,
Section 13 shall not be applicable to a transaction described in subparagraphs
(x) and (y) of Section 13(a) if (i) such transaction is consummated with a
Person or Persons (or a wholly-owned subsidiary of any such Person or Persons)
who acquired shares of Common Stock pursuant to a tender offer or exchange offer
for all outstanding shares of Common Stock at a price and on terms determined to
be in accordance with Section 11(a)(ii)(A) hereof, (ii) the price per share of
Common Stock offered in such transaction is not less than the price per share of
Common Stock paid to all holders of shares of Common Stock whose shares were
purchased pursuant to such tender offer or exchange offer, and (iii) the form of
consideration being offered to the remaining holders of shares of Common Stock
pursuant to such transaction is the same as the form of consideration paid
pursuant to such tender offer or exchange offer. Upon consummation of any such
transaction contemplated by this Section 13(d), all Rights hereunder shall
expire.

         Section 14. Fractional Rights and Fractional Shares.

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

                                       39
<PAGE>   41
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 fractional shares
of Preferred Stock (other than fractions which are integral multiples of one
one-hundredth of a share of Preferred Stock) upon exercise of the Rights or to
distribute certificates which evidence fractional shares of Preferred Stock
(other than fractions which are integral multiples of one one-hundredth of a
share of Preferred Stock). In lieu of fractional shares of Preferred Stock that
are not integral multiples of one one-hundredth of a share of Preferred Stock,
the Company may pay to the registered holders of Rights Certificates at the time
such Rights are exercised as herein provided an amount in cash equal to the same
fraction of the current market value of one one-hundredth of a share of
Preferred Stock. For purposes of this Section 14(b), the current market value of
one one-hundredth of a share of Preferred Stock shall be one one-hundredth of
the closing price of a share of Preferred Stock (as determined pursuant to
Section 11(d)(ii) hereof) for the Trading Day immediately prior to the date of
such exercise.

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

                                       40
<PAGE>   42
              (d) The holder of a Right by the acceptance of the Rights
expressly waives his right to receive any fractional Rights or any fractional
shares upon exercise of a Right, except as permitted by this Section 14.

         Section 15. Rights of Action. All rights of action in respect of this
Agreement are vested in the respective registered holders of the Rights
Certificates (and, prior to the Distribution Date, the registered holders of the
Common Stock); and any registered holder of any Rights Certificate (or, prior to
the Distribution Date, of the Common Stock), without the consent of the Rights
Agent or of the holder of any other Rights Certificate (or, prior to the
Distribution Date, of the Common Stock), may, in his own behalf and for his own
benefit, enforce, and may institute and maintain any suit, action, or proceeding
against the Company to enforce, or otherwise act in respect of, his right to
exercise the Rights evidenced by such Rights Certificate in the manner provided
in such Rights Certificate and in this Agreement. Without limiting the foregoing
or any remedies available to the holders of Rights, it is specifically
acknowledged that the holders of Rights would not have an adequate remedy at law
for any breach of this Agreement and shall be entitled to specific performance
of the obligations hereunder and injunctive relief against actual or threatened
violations of the obligations hereunder of any Person subject to this Agreement.

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

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

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

                                       41
<PAGE>   43
              (c) subject to Section 6(a) and Section 7(f) hereof, the Company
and the Rights Agent may deem and treat the person in whose name a Rights
Certificate (or, prior to the Distribution Date, the associated Common Stock
certificate) is registered as the absolute owner thereof and of the Rights
evidenced thereby (notwithstanding any notations of ownership or writing on the
Rights Certificates or the associated Common Stock certificate made by anyone
other than the Company or the Rights Agent) for all purposes whatsoever, and
neither the Company nor the Rights Agent, subject to the last sentence of
Section 7(e) hereof, shall be required to be affected by any notice to the
contrary; and

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

         Section 17. Rights Certificate Holder Not Deemed a Shareholder. No
holder, as such, of any Rights Certificate shall be entitled to vote, receive
dividends, or be deemed for any purpose the holder of the number of one
one-hundredths of a share of Preferred Stock or any other securities of the
Company which may at any time be issuable upon the exercise of the Rights
represented thereby, nor shall anything contained herein or in any Rights
Certificate be construed to confer upon the holder of any Rights Certificate, as
such, any of the rights of a shareholder of the Company or any right to vote for
the election of directors or upon any matter submitted to shareholders at any
meeting thereof, or to give or withhold consent to any corporate action, or to
receive notice of meetings or other actions affecting shareholders (except as
provided in Section 25 hereof), or to receive dividends or subscription rights,
or otherwise, until the Right

                                       42
<PAGE>   44
or Rights evidenced by such Rights Certificate shall have been exercised in
accordance with the provisions hereof.

         Section 18. Concerning the Rights Agent.

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

              (b) The Rights Agent shall be protected and shall incur no
liability for or in respect of any action taken, suffered, or omitted by it in
connection with its administration of this Agreement in reliance upon any Rights
Certificate or certificate for Common Stock or for other securities of the
Company, instrument of assignment or transfer, power of attorney, endorsement,
affidavit, letter, notice,, direction, consent, certificate, statement, or other
paper or document believed by it to be genuine and to be signed, executed and,
where necessary, verified or acknowledged, by the proper Person or Persons.

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

              (a) Any corporation into which the Rights Agent or any successor
Rights Agent may be merged or with which it may be consolidated, or any
corporation resulting from any merger or consolidation to which the Rights Agent
or any successor Rights Agent shall be a party, or any corporation succeeding to
the corporate trust business of the Rights Agent or any successor

                                       43
<PAGE>   45
Rights Agent, shall be the successor to the Rights Agent under this Agreement
without the execution or filing of any paper or any further act on the part of
any of the parties hereto; provided, however, that such corporation would be
eligible for appointment as a successor Rights Agent under the provisions of
Section 21 hereof. In case at the time such successor Rights Agent shall succeed
to the agency created by this Agreement, any of the Rights Certificates shall
have been countersigned but not delivered, any such successor Rights Agent may
adopt the countersignature of a predecessor Rights Agent and deliver such Rights
Certificates so countersigned; and in case at that time any of the Rights
Certificates shall not have been countersigned, any successor Rights Agent may
countersign such Rights Certificates either in the name of the predecessor or in
the name of the successor Rights Agent; and in all such cases such Rights
Certificates shall have the full force provided in the Rights Certificates and
in this Agreement.

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

         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 Rights Certificates,
by their acceptance thereof, shall be bound:

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

              (b) Whenever in the performance of its duties under this Agreement
the Rights Agent shall deem it necessary or desirable that any fact or

                                       44
<PAGE>   46
matter (including, without limitation, the identity of any Acquiring Person or
Adverse Person and the determination of "current market price") be proved or
established by the Company prior to taking or suffering any action hereunder,
such fact or matter (unless other evidence in respect thereof be herein
specifically prescribed) may be deemed to be conclusively proved and established
by a certificate signed by the Chairman of the Board, the President, any
Executive Vice President, the Chief Financial Officer, or the Secretary of the
Company and delivered to the Rights Agent; and such certificate shall be full
authorization to the Rights Agent for any action taken or suffered in good faith
by it under the provisions of this Agreement in reliance upon such certificate.

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

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

              (e) The Rights Agent shall not be under any responsibility in
respect of the validity of this Agreement or the execution and delivery hereof
(except the due execution and delivery hereof by the Rights Agent) or in respect
of the validity or execution of any Rights Certificate (except its
countersignature thereof); nor shall it be responsible for any breach by the
Company of any covenant or condition contained in this Agreement or in any
Rights Certificate; nor shall it be responsible for any adjustment required
under the provisions of Section 11 or Section 13 hereof or responsible for the
manner, method or amount of any such adjustment or the ascertaining of the
existence of facts that would require any such adjustment (except with respect
to the exercise of Rights evidenced by Rights Certificates after actual notice
of any such adjustment); nor shall it by any act hereunder be deemed to make any
representation or warranty as to the authorization or reservation of any shares
of Common Stock or Preferred Stock to be issued pursuant to this Agreement or
any Rights Certificate or as to

                                       45
<PAGE>   47
whether any shares of Common Stock or Preferred Stock will, when so issued, be
validly authorized and issued, fully paid and nonassessable.

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

              (g) The Rights Agent is here-by authorized and directed to accept
instructions with respect to the performance of its duties hereunder from the
Chairman of the Board, the President, any Executive Vice President, the Chief
Financial Officer, or the Secretary of the Company, and to apply to such
officers for advice or instructions in connection with its duties, and it shall
not be liable for any action taken or suffered to be taken by it in good faith
in accordance with instructions of any such officer.

              (h) The Rights Agent and any shareholder, director, officer, or
employee of the Rights Agent may buy, sell, or deal in any of the Rights or
other securities of the Company or become pecuniarily interested in any
transaction in which the Company may be interested, or contract with or lend
money to the Company or otherwise act as fully and freely as though it were not
Rights Agent under this Agreement. Nothing herein shall preclude the Rights
Agent from acting in any other capacity for the Company or for any other legal
entity.

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

                                       46
<PAGE>   48
              (j) No provision of this Agreement shall require the Rights Agent
to expend or risk its own funds or otherwise incur any financial liability in
the performance of any of its duties hereunder or in the exercise of its rights
if there shall be reasonable grounds for believing that repayment of such funds
or adequate indemnification against such risk or liability is not reasonably
assured to it.

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

         Section 21. Change of Rights Agent. The Rights Agent or any successor
Rights Agent may resign and be discharged from its duties under this Agreement
upon 30 days' notice in writing mailed to the Company, and to each transfer
agent of the Common Stock and Preferred Stock, by registered or certified mail,
and to the holders, if any, of the Rights Certificates by first-class mail. The
Company may remove the Rights Agent or any successor Rights Agent upon 10 days'
notice in writing, mailed to the Rights Agent or successor Rights Agent, as the
case may be, and to each transfer agent of the Common Stock and Preferred Stock,
by registered or certified mail, and to the holders of the Rights Certificates
by first-class mail. If the Rights Agent shall resign or be removed or shall
otherwise become incapable of acting, the Company shall appoint a successor to
the Rights Agent. If the Company shall fail to make such appointment within a
period of 10 days after giving notice of such removal, or within a period of 30
days after it has been notified in writing of such resignation or incapacity by
the resigning or incapacitated Rights Agent or by the holder of a Rights
Certificate (who shall, with such notice, submit his Rights Certificate for
inspection by the Company), as the case may be, then any registered holder of
any Rights Certificate may apply to any court of competent jurisdiction for the
appointment of a new Rights Agent. Any successor Rights Agent, whether appointed
by the Company or by such a court, shall be a corporation organized and doing
business under the laws of the United States or of any state of the United
States so long as such corporation is authorized under such laws to exercise
corporate trust powers and is subject to

                                       47
<PAGE>   49
supervision or examination by federal or state authority and which has at the
time of its appointment as Rights Agent a combined capital and surplus of at
least $50,000,000 or the performance of which is guaranteed by a corporation
with a combined capital and surplus of at least $50,000,000. After appointment,
the successor Rights Agent shall be vested with the same powers, rights, duties,
and responsibilities as if it had been originally named as Rights Agent without
further act or deed; but the predecessor Rights Agent shall deliver and transfer
to the successor Rights Agent any property at the time held by it hereunder, and
execute and deliver any further assurance, conveyance, act or deed necessary for
the purpose. Not later than the effective date of any such appointment, the
Company shall file notice thereof in writing with the predecessor Rights Agent
and each transfer agent of the Common Stock and the Preferred Stock, and mail a
notice thereof in writing to the registered holders of the Rights Certificates.
Failure to give any notice provided for in this Section 21, however, or any
defect therein, shall not affect the legality or validity of the resignation or
removal of, the Rights Agent or the appointment of the successor Rights Agent,
as the case may be.

         Section 22. Issuance of New Rights Certificates. Notwithstanding any of
the provisions of this Agreement or of the Rights to the contrary, the Company
may, at its option, issue new Rights Certificates evidencing Rights in such form
as may be approved by its Board of Directors to reflect any adjustment or change
in the Purchase Price and the number, kind, or class of shares or other
securities or property purchasable under the Rights Certificates made in
accordance with the provisions of this Agreement. In addition, in connection
with the issuance or sale of shares of Common Stock following the Distribution
Date and prior to the redemption or expiration of the Rights, the Company (a)
shall, with respect to shares of Common Stock so issued or sold pursuant to the
exercise of stock options or under any employee plan or arrangement, granted or
awarded on or prior to the Distribution Date, or upon the exercise, conversion,
or exchange of securities hereinafter issued by the Company, and (b) may, in any
other case, if deemed necessary or appropriate by the Board of Directors of the
Company, issue Rights Certificates representing the appropriate number of Rights
in connection with such issuance or sale; provided, however, that (i) no such
Rights Certificate shall be issued if, and to the extent that, the Company shall
be advised by counsel that such issuance would create a significant risk of
material adverse tax consequences to the Company or the Person to whom such
Rights Certificate would be issued, and (ii) no such Rights Certificate shall be
issued if, and to the

                                       48
<PAGE>   50
extent that, appropriate adjustment shall otherwise have been made in lieu of
the issuance thereof.

         Section 23. Redemption and Termination.

              (a) The Board of Directors of the Company may, at its option, at
any time prior to the earlier of (i) the close of business on the twentieth
Business Day following the Stock Acquisition Date (or such later date as may be
determined by a majority of the Continuing Directors; provided, however, that
such date shall not be extended at such time if the Rights are not then
redeemable), or (ii) the Final Expiration Date, redeem all but not less than all
the then outstanding Rights at a redemption price of $.001 per Right, as such
amount may be appropriately adjusted to reflect any stock split, stock dividend,
or similar transaction occurring after the date hereof (such redemption price
being hereinafter referred to as the "Redemption Price"); provided, however,
that if, following the occurrence of the Stock Acquisition Date and following
the expiration of the right of redemption hereunder but prior to any Triggering
Event, (i) a Person who is an Acquiring Person shall have transferred or
otherwise disposed of a number of shares of Common Stock in one transaction or
series of transactions, not directly or indirectly involving the Company or any
of its Subsidiaries, such that such Person is thereafter a Beneficial Owner of
less than 10% of the outstanding shares of Common Stock or Voting Securities
representing less than 10% of Total Voting Power, and (ii) there are no other
Persons, immediately following the occurrence of the event described in clause
(i), who are Acquiring Persons, then the right of redemption shall be reinstated
and thereafter be subject to the provisions of this Section 23. Notwithstanding
the foregoing, the Board of Directors may not redeem any Rights following a
determination pursuant to Section 11(a)(ii)(B) that any Person is an Adverse
Person. Notwithstanding anything contained in this Agreement to the contrary,
the Rights shall not be exercisable after the first occurrence of a Section
11(a)(ii) Event until such time as the Company's right of redemption hereunder
has expired. The Company may, at its option, pay the Redemption Price in cash,
shares of Common Stock (based on the "current market price", as defined in
Section 11(d)(i) hereof, of the Common Stock at the time of redemption), or any
other form of consideration deemed appropriate by the Board of Directors.

                                       49
<PAGE>   51
              (b) Immediately upon the action of the Board of Directors of the
Company ordering the redemption of the Rights, and without any further action
and without any notice, the right to exercise the Rights will terminate and the
only right thereafter of the holders of Rights shall be to receive the
Redemption Price for each Right so held. The Company shall promptly give public
notice of such redemption and notice to the Rights Agent; provided, however, 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, the Company shall mail a notice to all
holders of the then outstanding Rights at each holder's last address as it
appears upon the registry books of the Rights Agent or, prior to the
Distribution Date, on the registry books of the transfer agent for the Common
Stock. Any notice which is mailed in the manner herein provided shall be deemed
given, whether or not the holder receives the notice. Each such notice of
redemption will state the method by which the payment of the Redemption Price
will be made.

         Section 24. Exchange.

              (a) The Board of Directors of the Company may, at its option, at
any time and from time to time after the first occurrence of a Section 11(a)(ii)
Event, exchange all or part of the then outstanding and exercisable Rights
(which shall not include Rights that have become void pursuant to the provisions
of Section 7(e) hereof) for shares of Common Stock or common stock equivalents
(as defined in Section 11(a)(iii) hereof), or any combination thereof, at an
exchange ratio of one share of Common Stock, or such number of common stock
equivalents or units representing fractions thereof as would be deemed to have
the same value as one share of Common Stock, per Right, appropriately adjusted
to reflect any stock split, stock dividend, or similar transaction occurring
after the date hereof (such exchange ratio being hereinafter referred to as the
"Exchange Ratio").

              (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

                                       50
<PAGE>   52
exercise such Rights shall terminate and the only right thereafter of a holder
of such Rights shall be to receive that number of shares of Common Stock and/or
common stock equivalents 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 shares of Common
Stock and/or common stock equivalents for Rights will be effected and, in the
event of any partial exchange, the number of Rights which will be exchanged. Any
partial exchange shall be effected pro rata based on the number of Rights (other
than Rights which have become void pursuant to the provisions of Section 7(e)
hereof) held by each holder of Rights.

              (c) In the event that the number of shares of Common Stock which
are authorized by the Company's Articles of Incorporation but not outstanding or
reserved for issuance for purposes other than upon exercise of the Rights are
not sufficient to permit an exchange of Rights as contemplated in accordance
with this Section 24, the Company may, at its option, take all such action as
may be necessary to authorize additional shares of Common Stock for issuance
upon exchange of the Rights.

              (d) The Company shall not be required to issue fractional shares
of Common Stock or to distribute certificates which evidence fractional shares
of Common Stock. In lieu of such fractional shares of Common Stock, the Company
shall pay to the registered holders of Rights with regard to which such
fractional shares of Common Stock would otherwise be issuable an amount in cash
equal to the same fraction of the value of a whole share of Common Stock. For
purposes of this Section 24, the value of a whole share of Common Stock shall be
the closing price (as determined pursuant to the second sentence of Section
11(d)(i) hereof) for the Trading Day immediately prior to the date of exchange
pursuant to this Section 24, and the value of any common stock equivalent shall
be deemed to have the same value as the Common Stock on such date.

                                       51
<PAGE>   53
         Section 25. Notice of Certain Events.

              (a) In case the Company shall propose, at any time after the
Distribution Date, (i) to pay any dividend payable in stock of any class to the
holders of Preferred Stock or to make any other distribution to the holders of
Preferred Stock (other than a regular quarterly cash dividend out of earnings or
retained earnings of the Company), or (ii) to offer to the holders of Preferred
Stock rights or warrants to subscribe for or to purchase any additional shares
of Preferred Stock or shares of stock of any class or any other securities,
rights or options, or (iii) to effect any reclassification of its Preferred
Stock (other than a reclassification involving only the subdivision of
outstanding shares of Preferred Stock), or (iv) to effect any consolidation or
merger into or with any other Person (other than a Subsidiary of the Company in
a transaction which complies with Section 11(o) hereof), or to effect any sale
or other transfer (or to permit one or more of its Subsidiaries to effect any
sale or other transfer), in one transaction or a series of related transactions
of more than 50% of the assets or earning power of the Company and its
Subsidiaries (taken as a whole) to any other Person or Persons (other than the
Company and/or any of its Subsidiaries in one or more transactions each of which
complies with Section 11(o) hereof), or (v) to effect the liquidation,
dissolution, or winding up of the Company, then, in each such case, the Company
shall give to each holder of a Rights Certificate, to the extent feasible and in
accordance with Section 26 hereof, a notice of such proposed action, which shall
specify the record date for the purposes of such stock dividend, distribution of
rights or warrants, or the date on which such reclassification, consolidation,
merger, sale, transfer, liquidation, dissolution, or winding up is to take place
and the date of participation therein by the holders of the shares of Preferred
Stock, if any such date is to be fixed, and such notice shall be so given in the
case of any action covered by clause (i) or (ii) above at least 20 days prior to
the record date for determining holders of the shares of Preferred Stock for
purposes of such action, and in the case of any such other action, at least 20
days prior to the date of the taking of such proposed action or the date of
participation therein by the holders of the shares of Preferred Stock whichever
shall be the earlier.

              (b) In case any Section 11(a)(ii) Event shall occur, then, (i) the
Company shall as soon as practicable thereafter give to each holder of a

                                       52
<PAGE>   54
Rights Certificate, to the extent feasible and in accordance with Section 26
hereof, a notice of the occurrence of such event, which shall specify the event
and the consequences of the event to holders of Rights under Section 11(a)(ii)
hereof, and (ii) all references in the preceding paragraph to Preferred Stock
shall be deemed thereafter to refer to Common Stock and/or, if appropriate,
other securities.

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

                USBANCORP, Inc.
                Main and Franklin Streets
                Johnstown, PA  15901

                Attention:  Orlando B. Hanselman,
                               Executive Vice President

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

                USBANCORP Trust Company
                U.S. Bank Building
                Main and Franklin Streets
                P.O. Box 520
                Johnstown, PA  15907-0520

                Attention:  Ronald W. Virag
                               President and
                               Chief Executive Officer

                                       53
<PAGE>   55
         Notices or demands authorized by this Agreement to be given or made by
the Company or the Rights Agent to the holder of any Rights Certificate (or, if
prior to the Distribution Date, to the holder of certificates representing
shares of Common Stock) shall be sufficiently given or made if sent by United
States 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. Prior to the Distribution Date
and subject to the penultimate sentence of this Section 27, the Company and the
Rights Agent shall, if the Company so directs, supplement or amend any provision
of this Agreement without the approval of any holders of certificates
representing shares of Common Stock. From and after the Distribution Date and
subject to the penultimate sentence of this Section 27, the Company and the
Rights Agent shall, if the Company so directs, supplement or amend this
Agreement without the approval of any holders of Rights Certificates in order
(i) to cure any ambiguity, (ii) to correct or supplement any provision contained
herein which may be defective or inconsistent with any other provisions herein,
or (iii) to change or supplement the provisions hereunder in any manner which
the Company may deem necessary or desirable and which shall not adversely affect
the interests of the holders of Rights Certificates. Upon the delivery of a
certificate from an appropriate officer of the Company which states that the
proposed supplement or amendment is in compliance with the terms of this Section
27, the Rights Agent shall execute such supplement or amendment.

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

         Section 29. Determinations and Actions by the Board of Directors. For
all purposes of this Agreement, any calculation of the number of shares of
Voting Securities outstanding at any particular time, including for purposes of
determining the particular percentage of such outstanding shares of Voting
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 hereof. The
Board of Directors of the Company (with, where specifically provided for herein,
the

                                       54
<PAGE>   56
concurrence of the Continuing Directors) shall have the exclusive power and
authority to administer this Agreement and to exercise all rights and powers
specifically granted to the Board (with, where specifically provided for herein,
the concurrence of the Continuing Directors) or to the Company, or as may be
necessary or advisable in the administration of this Agreement, including,
without limitation, the right and power to (i) interpret the provisions of this
Agreement, and (ii) make all determinations deemed necessary or advisable for
the administration of this Agreement (including (i) a determination as to the
identity of the Affiliates and Associates of any person, (ii) a determination as
to the extent of the Beneficial Ownership of any Person, and (iii) 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 (with, where specifically provided for herein, the
concurrence of the Continuing Directors) in good faith, shall (x) be final,
conclusive and binding on the Company, the Rights Agent, the holders of the
Rights and all other parties, and (y) not subject the Board (or the Continuing
Directors) to any liability to the holders of the Rights.

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

         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;
provided, however, that notwithstanding anything in this Agreement to the
contrary, if any such term, provision, covenant, or restriction is held by such
court or authority to be invalid, void, or unenforceable and the Board of
Directors of the Company determines in its good faith judgment that severing the
invalid language from this

                                       55
<PAGE>   57
Agreement would adversely affect the purpose or effect of this Agreement, the
right of redemption set forth in Section 23 hereof shall be reinstated and shall
not expire until the close of business on the tenth day following the date of
such determination by the Board of Directors. Without limiting the foregoing, if
any provision requiring that a determination be made by less than the entire
Board is held by a court of competent jurisdiction or other authority to be
invalid, void, or unenforceable, such determination shall then be made by the
entire Board.

         Section 32. Governing Law. This Agreement, each Right and each Rights
Certificate issued hereunder shall be deemed to be a contract made under the
laws of the Commonwealth of Pennsylvania and for all purposes shall be governed
by and construed in accordance with the laws of the Commonwealth applicable to
contracts made and to be performed entirely within the Commonwealth.

         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.

                                       56
<PAGE>   58
         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed as of the day and year first above written.

                                USBANCORP, INC.

                                By /s/Terry K. Dunkle
                                  --------------------------------------------
                                                  Terry K. Dunkle
                                                  Chairman, President and
                                                  Chief Executive Officer

                                Attest: /s/Betty L. Jakell
                                       ---------------------------------------
                                                  Betty L. Jakell
                                                  Secretary

                                USBANCORP TRUST COMPANY

                                By /s/Ronald W. Virag
                                  --------------------------------------------
                                                  Ronald W. Virag
                                                  President and
                                                  Chief Executive Officer

                                Attest: /s/Jane Buxbaum
                                       ---------------------------------------
                                                  Secretary

                                       57
<PAGE>   59
                                                                       Exhibit A

                                    TERMS OF

                  SERIES C JUNIOR PARTICIPATING PREFERRED STOCK

                                       OF

                                 USBANCORP, INC.

         RESOLVED that, pursuant to the authority vested in the Board of
Directors of the Corporation by the Articles of Incorporation, the Board of
Directors does hereby provide for the issue of a series of Preferred Stock,
without par value, of the Corporation, to be designated "Series C Junior
Participating Preferred Stock" (hereinafter referred to as the "Series C
Preferred Stock" or "this Series"), initially consisting of 60,000 shares, and
to the extent that the designations, powers, preferences and relative and other
special rights and the qualifications, limitations and restrictions of the
Series C Preferred Stock are not stated and expressed in the Articles of
Incorporation, does hereby fix and herein state and express such designations,
powers, preferences and relative and other special rights and the
qualifications, limitations and restrictions thereof, as follows (all terms used
herein which are defined in the Articles of Incorporation shall be deemed to
have the meanings provided therein):

         1. Designation and Amount. The designation of the series of Preferred
Stock created by this resolution shall be Series C Junior Participating
Preferred Stock and the number of shares constituting such Series is Sixty
Thousand (60,000). Such number of shares may be increased or decreased by
resolution of the Board of Directors; provided, that no decrease shall reduce
the number of shares of Series C Preferred Stock to a number less than the
number of shares then outstanding plus the number of shares reserved for
issuance upon the exercise of outstanding options, rights or warrants or upon
the conversion of any outstanding securities of the Corporation convertible into
shares of this Series.

         2. Dividends.

                                      A-58
<PAGE>   60
                  (A) Subject to the prior and superior rights of the holders of
any shares of any series of Preferred Stock ranking prior and superior to the
shares of this Series with respect to dividends, the holders of shares of this
Series shall be entitled to receive, when and as declared by the Board of
Directors out of funds legally available for the purpose, quarterly dividends
payable in cash on April 1, July 1, October 1, and January 1 of each year (each
such date being referred to herein as a "Quarterly Dividend Payment Date"),
commencing on the first Quarterly Dividend Payment Date after the first issuance
of a share or fraction of a share of this Series, in an amount per share
(rounded to the nearest cent) equal to the greater of (a) $10.00 or (b) subject
to the provision for adjustment hereinafter set forth, 100 times the aggregate
per share amount of all cash dividends, and 100 times the aggregate per share
amount (payable in kind) of all non-cash dividends or other distributions other
than a dividend payable in shares of Common Stock or a subdivision of the
outstanding shares of Common Stock (by reclassification or otherwise), declared
on the Common Stock since the immediately preceding Quarterly Dividend Payment
Date, or, with respect to the first Quarterly Dividend Payment Date, since the
first issuance of any share or fraction of a share of this Series. In the event
the Company shall at any time after February 24, 1995 (the "Rights Declaration
Date") declare any dividend on the Common Stock payable in shares of Common
Stock, subdivide the outstanding shares of Common Stock, or combine the
outstanding shares of Common Stock into a smaller number of shares, then in each
such case the amount to which holders of shares of this Series were entitled
immediately prior to such event under clause (b) of the preceding sentence shall
be adjusted by multiplying such amount by a fraction the numerator of which is
the number of shares of Common Stock outstanding immediately after such event
and the denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event.

                                      A-59
<PAGE>   61
                  (B) The Company shall declare a dividend or distribution on
the Series C Preferred Stock as provided in paragraph (A) of this Section
immediately after it declares a dividend or distribution on the Common Stock
(other than a dividend payable in shares of Common Stock); provided that, in the
event no dividend or distribution shall have been declared on the Common Stock
during the period between any Quarterly Dividend Payment Date and the next
subsequent Quarterly Dividend Payment Date, a dividend of $10.00 per share on
Series C Preferred Stock shall nevertheless be payable on such subsequent
Quarterly Dividend Payment Date.

                  (C) Dividends shall begin to accrue and be cumulative on
outstanding shares of Series C Preferred Stock from the Quarterly Dividend
Payment Date next preceding the date of issue of such shares of this Series,
unless the date of issue of such shares is prior to the record date for the
first Quarterly Dividend Payment Date in which case dividends on such shares
shall begin to accrue from the date of issue of such shares, or unless the date
of issue is a Quarterly Dividend Payment Date or is a date after the record date
for the determination of holders of shares of this Series entitled to receive a
quarterly dividend and before such Quarterly Dividend Payment Date, in either of
which events such dividends shall begin to accrue and be cumulative from such
Quarterly Dividend Payment Date. Accrued but unpaid dividends shall not bear
interest. Dividends paid on the shares of this Series in an amount less than the
total amount of such dividends at the time accrued and payable on such shares
shall be allocated pro rata on a share-by-share basis among all such shares at
the time outstanding. The Board of Directors may fix a record date for the
determination of holders of shares of this Series entitled to receive payment of
a dividend or distribution declared thereon, which record date shall be no more
than ten (10) days prior to the date fixed for the payment thereof.

         1. Voting Rights. The holders of shares of Series C Preferred Stock
shall have the following voting rights:

                  (A) Subject to the provision for adjustment hereinafter set
forth, each share of Series C Preferred Stock shall entitle the holder thereof
to 100 votes on all matters submitted to a vote of the shareholders of the
Corporation.

                                      A-60
<PAGE>   62
In the event the Corporation shall at any time declare or pay any dividend on
the Common Shares payable in Common Shares, or effect a subdivision or
combination or consolidation of the outstanding shares of Common Stock (by
reclassification or otherwise than by payment of a dividend in shares of Common
Stock) into a greater or lesser number of shares of Common Stock, then in each
such case the number of votes per share to which holders of shares of Series C
Preferred Stock were entitled immediately prior to such event shall be adjusted
by multiplying such number by a fraction, the numerator of which is the number
of shares of Common Stock outstanding immediately after such event and the
denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event.

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

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

         1. Certain Restrictions.

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

                                      A-61
<PAGE>   63
                         (i) declare or pay dividends, or make any other
         distributions, on any shares of stock ranking junior (either as to
         dividends or upon liquidation, dissolution or winding up) to the Series
         C Preferred Stock;

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

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

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

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

                                      A-62
<PAGE>   64
         1. Reacquired Shares. Any shares of Series C Preferred Stock purchased
or otherwise acquired by the Corporation in any manner whatsoever shall be
retired and cancelled promptly after the acquisition thereof. All such shares
shall upon their cancellation become authorized but unissued shares of Preferred
Stock and may be reissued as part of a new series of Preferred Stock subject to
the conditions and restrictions on issuance set forth herein, in the Articles of
Incorporation, or in any other resolutions creating a series of Preferred Stock
or any similar stock or as otherwise required by law.

         2. Liquidation, Dissolution or Winding Up. Upon any liquidation,
dissolution or winding up of the Corporation, no distribution shall be made (A)
to the holders of shares of stock ranking junior (either as to dividends or upon
liquidation, dissolution or winding up) to the Series C Preferred Stock unless,
prior thereto, the holders of shares of Series C Preferred Stock shall have
received $100.00 per share, plus an amount equal to accrued and unpaid dividends
and distributions thereon, whether or not declared, to the date of such payment,
provided that the holders of shares of Series C Preferred Stock shall be
entitled to receive an aggregate amount per share, subject to the provision for
adjustment hereinafter set forth, equal to 100 times the aggregate amount to be
distributed per share to holders of Common Stock, or (B) to the holders of
shares of stock ranking on a parity (either as to dividends or upon liquidation,
dissolution or winding up) with the Series C Preferred Stock, except
distributions made ratably on the Series C Preferred Stock and all such parity
stock in proportion to the total amounts to which the holders of all such shares
are entitled upon such liquidation, dissolution or winding up. In the event the
Corporation shall at any time declare or pay any dividend on the outstanding
shares of Common Stock payable in shares of Common Stock, or effect a
subdivision or combination or consolidation of the outstanding shares of Common
Stock (by reclassification or otherwise than by payment of a dividend in shares
of Common Stock) into a greater or lesser number of shares of Common Stock, then
in each such case the aggregate amount to which holders of shares of Series C
Preferred Stock were entitled immediately prior to such event under the proviso
in clause (A) of the preceding sentence shall be adjusted by multiplying such
amount by a fraction the numerator of which is the number of shares of Common
Stock outstanding immediately after such event and the denominator of which is
the number of shares of Common Stock that were outstanding immediately prior to
such event.

                                      A-63
<PAGE>   65
         3. Consolidation, Merger, Etc. In case the Corporation shall enter into
any consolidation, merger, combination or other transaction in which the
outstanding shares of Common Stock are exchanged for or changed into other stock
or securities, cash and/or any other property, then in any such case each share
of Series C Preferred Stock shall at the same time be similarly exchanged or
changed into an amount per share, subject to the provision for adjustment
hereinafter set forth, equal to 100 times the aggregate amount of stock,
securities, cash and/or any other property (payable in kind), as the case may
be, into which or for which each share of Common Stock is changed or exchanged.
In the event the Corporation shall at any time declare or pay any dividend on
the Common Stock payable in shares of Common Stock, or effect a subdivision or
combination or consolidation of the outstanding shares of Common Stock (by
reclassification or otherwise than by payment of a dividend in shares of Common
Stock) into a greater or lesser number of shares of Common Stock, then in each
such case the amount set forth in the preceding sentence with respect to the
exchange or change of shares of Series C Preferred Stock shall be adjusted by
multiplying such amount by a fraction, the numerator of which is the number of
shares of Common Stock outstanding immediately after such event and the
denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event.

         4. No Redemption. The shares of Series C Preferred Stock shall not be
redeemable.

         5. Rank. The Series C Preferred Stock shall rank, with respect to the
payment of dividends and the distribution of assets, junior to all series of any
other class of the Corporation's Preferred Stock.

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

                                      A-64
<PAGE>   66
                                                                       Exhibit B

                          [Form of Rights Certificate]

Certificate No. R-                                               _______ Rights

NOT EXERCISABLE AFTER FEBRUARY 23, 2005, OR EARLIER IF REDEEMED OR EXCHANGED BY
USBANCORP, INC. THE RIGHTS ARE SUBJECT TO REDEMPTION, AT THE OPTION OF
USBANCORP, INC., AT $.001 PER RIGHT ON THE TERMS SET FORTH IN THE RIGHTS
AGREEMENT. UNDER CERTAIN CIRCUMSTANCES, RIGHTS BENEFICIALLY OWNED BY AN
ACQUIRING PERSON OR ADVERSE PERSON (AS SUCH TERMS ARE DEFINED IN THE RIGHTS
AGREEMENT) AND ANY SUBSEQUENT HOLDER OF SUCH RIGHTS MAY BECOME NULL AND VOID.
[THE RIGHTS REPRESENTED BY THIS RIGHTS CERTIFICATE ARE OR WERE BENEFICIALLY
OWNED BY A PERSON WHO WAS OR BECAME AN (ACQUIRING) (ADVERSE) PERSON OR AN
AFFILIATE OR ASSOCIATE OF AN (ACQUIRING) (ADVERSE) PERSON (AS SUCH TERMS ARE
DEFINED IN THE RIGHTS AGREEMENT). ACCORDINGLY, THIS RIGHTS CERTIFICATE AND THE
RIGHTS REPRESENTED HEREBY MAY BECOME NULL AND VOID UNDER THE CIRCUMSTANCES AND
WITH THE EFFECT SPECIFIED IN SECTION 7(e) OF SUCH AGREEMENT.(1)

                               Rights Certificate

                                 USBANCORP, INC.

         This certifies that                      , or registered assigns, is
the registered owner of the number of Rights set forth above, each of which
entitles the owner thereof, subject to the terms, provisions and conditions of
the Rights Agreement, dated as of February 24, 1995 (the "Rights Agreement"),
between USBANCORP, Inc. a Pennsylvania corporation (the "Company"), and
USBANCORP Trust Company, a Pennsylvania trust company, as rights agent (the
"Rights Agent), to purchase from the Company at any time prior to 5:00 P.M. (New
York City time) on February 23, 2005, at the office or offices of the Rights
Agent designated for such purpose, or its successors as Rights Agent, one
one-hundredth of a fully paid, nonassessable share of Series C Junior
Participating Preferred Stock (the "Preferred Stock") of the Company, at a

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

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

<PAGE>   67
purchase price of Sixty-Five Dollars ($65.00) per one one-hundredth of a share
(the "Purchase Price"), upon presentation and surrender of this Rights
Certificate with the Form of Election to Purchase and related Certificate duly
executed. The number of Rights evidenced by this Rights Certificate (and the
number of shares which may be purchased upon exercise thereof) set forth above,
and the Purchase Price per share set forth above, are the number and Purchase
Price as of March 15, 1995, based on the Preferred Stock as constituted at such
date. The Company reserves the right to require prior to the occurrence of a
Triggering Event (as defined in the Rights Agreement) that a number of Rights be
exercised so that only whole shares of Preferred Stock will be issued.

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

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

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

<PAGE>   68
         This Rights Certificate, with or without other Rights Certificates,
upon surrender at the principal office or offices of the Rights Agent designated
for such purpose, may be exchanged for another Rights Certificate or Rights
Certificates of like tenor and date evidencing Rights entitling the holder to
purchase a like aggregate number of one one-hundredths of a share of Preferred
Stock as the Rights evidenced by the Rights Certificate or Rights Certificates
surrendered shall have entitled such holder to purchase. If this Rights
Certificate shall be exercised in part, the holder shall be entitled to receive
upon surrender hereof another Rights Certificate or Rights Certificates for the
number of whole Rights not exercised.

         Subject to the provisions of the Rights Agreement, the Rights evidenced
by this Certificate (i) may (unless the Board of Directors shall have made a
determination pursuant to Section 11(a)(ii)(B) of the Rights Agreement that a
Person is an Adverse Person) be redeemed by the Company at its option at a
redemption price of $.001 per Right at any time prior to the earlier of the
close of business on (a) the twentieth business day following the Stock
Acquisition Date (as such time period may be extended pursuant to the Rights
Agreement), and (b) the Final Expiration Date.

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

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

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

<PAGE>   69
                  WITNESS the facsimile signature of the proper officers of the
Company and its corporate seal.

Dated as of _________________, ____

                                               USBANCORP, INC.

                                               By______________________________
                                                                 Title:

                                               Attest:_________________________
                                                                 Secretary

Countersigned:

USBANCORP TRUST COMPANY,
as rights agent

By________________________
  Authorized Signature
<PAGE>   70
                  [Form of Reverse Side of Rights Certificate]

                               FORM OF ASSIGNMENT

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

FOR VALUE RECEIVED ____________________________________________________________
hereby sells, assigns and transfers unto ______________________________________

_______________________________________________________________________________
                     (Please print name and address of transferee)

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

Dated:  _______________, _____

                                                _______________________________
                                                            Signature

Signature Guaranteed:  ______________________________

         Signatures must be guaranteed by a member firm of a registered national
securities exchange, a member of the National Association of Securities Dealers,
Inc., or a commercial bank or trust company having an office or correspondent in
the United States.
<PAGE>   71
                                   Certificate

     The undersigned hereby certifies by checking the appropriate boxes that

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

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

Dated: _______________, _____       __________________________________
                                 Signature

Signature Guaranteed:

                                     NOTICE

         The signature to the foregoing Assignment and Certificate must
correspond to the name as written upon the face of this Rights Certificate in
every particular, without alteration or enlargement or any change whatsoever.
<PAGE>   72
                          FORM OF ELECTION TO PURCHASE

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

To: USBANCORP, INC.:

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

Please insert social security
or other identifying number

_______________________________________________________________________________
                         (Please print name and address)

_______________________________________________________________________________

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

Please insert social security
or other identifying number

_______________________________________________________________________________
                         (Please print name and address)

_______________________________________________________________________________

_______________________________________________________________________________

Dated: ___________________, _____

                                                  _____________________________
                                                           Signature
<PAGE>   73

Signature Guaranteed:  ____________________________

                  Signatures must be guaranteed by a member firm of a registered
national securities exchange, a member of the National Association of Securities
Dealers, Inc., or a commercial bank or trust company having an office or
correspondent in the United States.
<PAGE>   74
                                   Certificate

         The undersigned hereby certifies by checking the appropriate boxes
that:

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

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

Dated: ______________, ____         __________________________________
                                                     Signature

Signature Guaranteed:

                                     NOTICE

         The signature to the foregoing Election to Purchase and Certificate
must correspond to the name as written upon the face of this Rights Certificate
in every particular, without alteration or enlargement or any change whatsoever.
<PAGE>   75
                                                                       Exhibit C

                          SUMMARY OF RIGHTS TO PURCHASE
                                 PREFERRED STOCK

         On February 24, 1995, the Board of Directors of USBANCORP, Inc. (the
"Company") declared a dividend distribution of one Right for each outstanding
share of the Company's Common Stock, par value $2.50 per share (the "Common
Stock"), to shareholders of record at the close of business on March 15, 1995.
Each Right entitles the registered holder to purchase from the Company one
one-hundredth of a share of Series C Junior Participating Preferred Stock,
without par value (the "Preferred Stock"), at a Purchase Price of $65.00,
subject to adjustment.

         The description and terms of the Rights are set forth in a Rights
Agreement dated February 24, 1995 (the "Rights Agreement") between the Company
and USBANCORP Trust Company, as rights agent, which is incorporated herein by
reference. The Rights Agreement replaces the Shareholder Rights Protection
Agreement dated November 10, 1989 between the Company and United States National
Bank in Johnstown, as rights agent, which expired on November 10, 1994.

         Initially, the Rights will not be exercisable and no separate
certificates evidencing the Rights ("Rights Certificates") will be distributed.
The Rights will be evidenced by Common Stock certificates representing shares
then outstanding and will automatically trade with the Common Stock. The Rights
will separate from the Common Stock on a "Distribution Date." A "Distribution
Date" will occur upon the earlier of (i) 20 business days following a public
announcement that a person or group of affiliated or associated persons (an
"Acquiring Person") has acquired, or obtained the right to acquire, 19.9% or
more of the outstanding shares of Common Stock or voting securities representing
19.9% or more of the total voting power of the Company (the "Stock Acquisition
Date"), (ii) 20 business days (or such later date as the Board of Directors
shall determine) following the commencement of a tender offer or exchange offer
that would result in a person or group acquiring 19.9% or more of such
outstanding shares of Common Stock or total voting power, or (iii) 20 business
days following the determination by the Board of Directors, after reasonable
inquiry and investigation, including consultation with such persons as such
directors shall deem appropriate, that, with respect to any person who has,
along or together with his affiliates or associates,
<PAGE>   76
acquired 10% or more of such outstanding shares of Common Stock or total voting
power of the Company (i) such beneficial ownership by such person is intended to
cause the Company to repurchase the voting securities beneficially owned by such
person or to cause pressure on the Company to take action or enter into a
transaction or series of transactions intended to provide such person with
short-term financial gain under circumstances where the Board determines that
the best long-term interests of the Company and its shareholders would not be
served by taking such action or entering into such transaction or transactions
at that time or (ii) such ownership is causing or is likely to cause a material
adverse impact on the business or prospects of the Company (any such person
being referred to herein and in the Rights Agreement as an "Adverse Person").

         Until the Distribution Date, (i) the Rights will be evidenced by the
Common Stock certificates and will be transferred with and only with such Common
Stock certificates, (ii) new Common Stock certificates issued after March 15,
1995 will contain a notation incorporating the Rights Agreement by reference,
and (iii) the surrender for transfer of any certificate for Common Stock
outstanding will also constitute the transfer of the Rights associated with the
Common Stock represented by such certificate.

         The Rights are not exercisable until the Distribution Date and will
expire at the close of business on February 23, 2005, unless earlier redeemed as
described below. Pursuant to the Rights Agreement, the Company reserves the
right to require prior to the occurrence of a Triggering Event (as defined
below) that, upon any exercise of Rights, a number of Rights be exercised so
that only whole share of Preferred Stock will be issued.

         As soon as practicable after the Distribution Date, Rights Certificates
will be mailed to holders of record of the Common Stock as of the close of
business on the Distribution Date and, thereafter, the separate Rights
Certificate alone will represent the Rights. Except as otherwise provided in the
Rights Agreement or determined by the Board of Directors, only shares of Common
Stock issued prior to the Distribution Date will be issued with Rights.

         In the event that (i) a person becomes an Acquiring Person (except
pursuant to an offer for all outstanding shares of the Company's voting
securities which at least a majority of the Continuing Directors (as defined
below) determines to be fair to and otherwise in the best interests of the
Company and its shareholders), (ii) an Acquiring Person engages in one or more
"self-dealing"
<PAGE>   77
transactions as defined in the Rights Agreement, (iii) the Company is the
surviving corporation in a merger with an Acquiring Person, (iv) during such
time that there exists an Acquiring Person, a recapitalization or reverse stock
split occurs which results in such Acquiring Person's proportionate ownership
interest being increased by more than 1%, or (v) any person is determined to be
an Adverse Person (any of the foregoing, a "Flip-in Event"), each holder of a
Right will thereafter have the right to receive, upon exercise, Common Stock
(or, in certain circumstances, cash, property, or other securities of the
Company) having a value (based on the lowest closing price of the Common Stock
during the twelve-month period preceding the Flip-in Event) equal to two times
the exercise price of the Right. Notwithstanding the foregoing, following the
occurrence of a Flip-in Event, all Rights that are, or (under certain
circumstances specified in the Rights Agreement) were, beneficially owned by any
Acquiring Person or an Adverse Person (or by certain related parties) will be
null and void. Rights are not exercisable following the occurrence of a Flip-in
Event, however, until such time as the Rights are no longer redeemable by the
Company as set forth below.

         For example, at an exercise price of $65.00 per Right, each Right not
owned by an Acquiring Person or an Adverse Person (or by certain related
parties) following a Flip-in Event would entitle its holder to purchase $130.00
worth of Common Stock based on the lowest closing price of the Common Stock
during the twelve-month period preceding the Flip-in Event (or other
consideration, as noted above) for $65.00. Assuming that the lowest closing
price of the Common Stock during such period was $32.50, the holder of each
valid Right would be entitled to purchase four shares of Common Stock for
$65.00.

         The term "Continuing Directors" means any member of the Board of
Directors of the Company who was a member of the Board prior to the date of the
Rights Agreement, and any person who is subsequently elected to the Board if
such person is recommended or approved by a majority of the Continuing
Directors, but shall not include an Acquiring Person, an Adverse Person, or an
affiliate or associate of an Acquiring Person or Adverse Person, or any
representative of the foregoing entities.

         In the event that, at any time following the Stock Acquisition Date,
(i) the Company is acquired in a merger or other business combination
transaction in which the Company is not the surviving corporation (other than a
merger which follows an offer for all outstanding voting securities of the
Company, which at least a majority of the Continuing Directors determines to be
fair to and otherwise
<PAGE>   78
in the best interests of the Company and its shareholders, and the merger price
is not less than, and the form of consideration is the same as, that paid in the
tender or exchange offer) or (ii) 50% or more of the Company's assets or earning
power is sold or transferred, each holder of a Right (except Rights which
previously have been voided as set forth above) shall thereafter have the right
to receive, upon exercise, common stock of the acquiring company having a value
equal to two times the exercise price of the Right. The events set forth in this
paragraph and in the second preceding paragraph are referred to as "Triggering
Events."

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

         With certain exceptions, no adjustment in the Purchase Price will be
required until cumulative adjustments amount to at least 1% of the Purchase
Price. No fractional shares of Preferred Stock will be issued and, in lieu
thereof, an adjustment in cash will be made based on the market price of the
Preferred Stock on the last trading date prior to the date of exercise.

         At any time during the twenty business days following the Stock
Acquisition Date, the Company may redeem the Rights in whole, but not in part,
at a price of $.001 per Right (payable in cash, Common Stock, or other
consideration deemed appropriate as determined by the Board of Directors). At
any time prior to the date the Rights would otherwise become nonredeemable, a
majority of the Continuing Directors may extend the period for redemption. The
Company's right of redemption may be reinstated if an Acquiring Person reduces
such Person's beneficial or total voting power ownership to less than 10% of the
outstanding shares of Common Stock or total voting power in a transaction or
series of transactions not involving the Company and there is then no other
Acquiring Person. Immediately upon the action of the Board of Directors ordering
redemption of the Rights, the Rights will terminate and the only right of the
holders of Rights will be to receive the $.001 redemption price. Notwithstanding
<PAGE>   79
the foregoing, the Board of Directors may not redeem the Rights following a
determination that any person is an Adverse Person.

         At any time after the occurrence of a Flip-in Event, the Board of
Directors may exchange the Rights (other than Rights owned by an Acquiring
Person or an Adverse Person or an affiliate or an associate of any such person,
which have become void), in whole or in part, at an exchange ratio of one share
of Common Stock, and/or other equity securities deemed to have the equivalent
value, per Right, subject to adjustment.

         Until a Right is exercised, the holder thereof, as such, will have no
rights as a shareholder of the Company, including, without limitation, the right
to vote or to receive dividends. While the distribution of the Rights will not
be taxable to shareholders or to the Company, shareholders may, depending upon
the circumstances, recognize taxable income in the event that the Rights become
exercisable for Common Stock (or other consideration) of the Company or for
common stock of the acquiring company as set forth above, or are exchanged as
provided in the preceding paragraph.

         Other than those provisions relating to the principal economic terms of
the Rights, any of the provisions of the Rights Agreement may be amended by the
Board of Directors of the Company prior to the Distribution Date. After the
Distribution Date, the provisions of the Rights Agreement may be amended by the
Board in order to cure any ambiguity, to make changes which do not adversely
affect the interests of holders of Rights (excluding the interests of any
Acquiring Person or Adverse Person or an affiliate or associate of any such
person), or to shorten or lengthen any time period under the Rights Agreement;
however, no amendment to adjust the time period governing redemption shall be
made at such time as the Rights are not redeemable.

         A copy of the Rights Agreement has been filed with the Securities and
Exchange Commission as an Exhibit to a Registration Statement on Form 8-A dated
March __, 1995. A copy of the Rights Agreement is available free of charge from
the Rights Agent. This summary description of the Rights does not purport to be
complete and is qualified in its entirety by reference to the Rights Agreement.

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