ARTHROCARE CORP
8-A12G, 1996-12-11
ELECTROMEDICAL & ELECTROTHERAPEUTIC APPARATUS
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<PAGE>   1
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                   ___________


                                    FORM 8-A


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


                             ARTHROCARE CORPORATION
             ______________________________________________________
             (Exact name of Registrant as specified in its charter)



          Delaware                                      94-3180312
________________________________________      ________________________________
(State of incorporation or organization)      (IRS Employer Identification No.)


                            595 North Pastoria Avenue
                               Sunnyvale, CA 94086
               (Address of principal executive offices) (Zip Code)

                                   ___________


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

         Title of each class                    Name of each exchange on which
         to be so registered                    each class is to be registered
         ___________________                    ______________________________

                  None                                       None



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


                     Common Stock, $.001 par value per share
                     _______________________________________
                               (Title of Class)

                         Preferred Share Purchase Rights
                         _______________________________
                                (Title of Class)
<PAGE>   2
Item 1.           Description of Securities to be Registered.

                  The authorized capital stock of ArthroCare Corporation (the
"Company") consists of 20,000,000 shares of Common Stock, $.001 par value per
share, and 5,000,000 shares of Preferred Stock, $.001 par value per share. As of
December 1, 1996, 8,777,204 shares of Common Stock were outstanding, held of
record by approximately 257 stockholders. No shares of Preferred Stock were
outstanding as of December 1, 1996, although 20,000 shares of the Preferred
Stock had been designated Series A Participating Preferred Stock, $.001 par
value. In addition, each outstanding share of Common Stock represented the
Preferred Share Purchase Right related thereto.

Common Stock, $.001 par value per share

                  The holders of Common Stock are entitled to one vote per share
on all matters to be voted upon by the stockholders. Subject to preferences that
may be applicable to any outstanding Preferred Stock, the holders of Common
Stock are entitled to receive ratably such dividends, if any, as may be declared
from time to time by the Board of Directors out of funds legally available for
that purpose. In the event of a liquidation, dissolution or winding up of the
Company, the holders of Common Stock are entitled to share ratably in all assets
remaining after payment of liabilities, subject to prior distribution rights of
Preferred Stock, if any, then outstanding. The Common Stock has no preemptive or
conversion rights or other subscription rights. There are no redemption or
sinking fund provisions applicable to the Common Stock. All outstanding shares
of Common Stock are fully paid and nonassessable.

Preferred Shares Purchase Rights

                  Pursuant to the Preferred Shares Rights Agreement (the "Rights
Agreement") dated as of November 14, 1996, as amended, between ArthroCare
Corporation (the "Company") and Norwest Bank Minnesota, N.A., as Rights Agent
(the "Rights Agent"), the Company's Board of Directors declared a dividend of
one right (a "Right") to purchase one one-thousandth share of the Company's
Series A Participating Preferred Stock ("Series A Preferred") for each
outstanding share of Common Stock ("Common Shares") of the Company. The dividend
is payable on December 13, 1996 (the "Record Date") to stockholders of record as
of the close of business on that date. Each Right entitles the registered holder
to purchase from the Company one one-thousandth of a share of Series A Preferred
at an exercise price of $50.00 (the "Exercise Price"), subject to adjustment.

         The following summary of the principal terms of the Rights Agreement is
a general description only and is subject to the detailed terms and conditions
of the Rights Agreement. A copy of the Rights Agreement is attached as Exhibit 5
to this Registration Statement and is incorporated herein by reference.

         Rights Evidenced by Common Share Certificates. The Rights will not be
exercisable until the Distribution Date (defined below). Until the Distribution
Date, certificates for the Rights ("Rights Certificates") will not be sent to
stockholders; instead, the Rights will attach to and trade only together with
the Common Shares. Accordingly, Common Share certificates outstanding on the
Record Date will evidence the Rights related thereto, and Common Share
certificates issued after the Record Date will contain a


                                       -2-
<PAGE>   3
notation incorporating the Rights Agreement by reference. Until the Distribution
Date (or the earlier redemption or expiration of the Rights), the surrender or
transfer of any certificates for Common Shares outstanding as of the Record
Date, even without the notation or a copy of the Summary of Rights being
attached thereto, will also constitute the transfer of the Rights associated
with the Common Shares represented by such certificate.

         Distribution Date. The Rights will separate from the Common Shares,
Rights Certificates will be issued and the Rights will become exercisable upon
the earlier of: (i) 10 days (or such later date as may be determined by a
majority of the Board of Directors, excluding directors affiliated with the
Acquiring Person, as defined below (the "Continuing Directors")) following a
public announcement that a person or group of affiliated or associated persons
(an "Acquiring Person") has acquired, or obtained the right to acquire,
beneficial ownership of 15% or more of the outstanding Common Shares; or (ii) 10
business days (or such later date as may be determined by a majority of the
Continuing Directors) following the commencement of, or announcement of an
intention to make, a tender offer or exchange offer the consummation of which
would result in the beneficial ownership by a person or group of 15% or more of
the outstanding Common Shares. The earlier of such dates is referred to as the
"Distribution Date"; provided, however, that in no event shall the Distribution
Date occur until the date on which this Registration Statement is declared
effective by the Securities and Exchange Commission.

         Issuance of Rights Certificates; Expiration of Rights. As soon as
practicable following the Distribution Date, separate Rights Certificates will
be mailed to holders of record of the Common Shares as of the close of business
on the Distribution Date and such separate Rights Certificates alone will
evidence the Rights from and after the Distribution Date. All Common Shares
issued prior to the Distribution Date will be issued with Rights. Common Shares
issued after the Distribution Date may be issued with Rights if such shares are
issued (i) upon the conversion of outstanding convertible debentures or any
other convertible securities issued after adoption of the Rights Agreement or
(ii) pursuant to the exercise of stock options or under employee benefit plans
or arrangements unless such issuance would result in (or create a risk that)
such options, plans or arrangements would not qualify for otherwise avail able
special tax treatment. Except as otherwise determined by the Board of Directors,
no other Common Shares issued after the Distribution Date will be issued with
Rights. The Rights will expire on the earliest of (i) November 14, 2006 (the
"Final Expiration Date"), (ii) redemption or exchange of the Rights as described
below, or (iii) consummation of an acquisition of the Company satisfying certain
conditions by a person who acquired shares pursuant to a Permitted Offer as
described below.

         Initial Exercise of the Rights. Following the Distribution Date, and
until one of the further events described below, holders of the Rights will be
entitled to receive, upon exercise and the payment of $50.00 per Right, one
one-thousandth share of the Series A Preferred. In the event that the Company
does not have sufficient Series A Preferred available for all Rights to be
exercised, or the Board decides that such action is necessary and not contrary
to the interests of Rights holders, the Company may instead substitute cash,
assets or other securities for the Series A Preferred for which the Rights would
have been exercisable under this provision or as described below.



                                       -3-
<PAGE>   4
         Right to Buy Company Common Shares. Unless the Rights are earlier
redeemed, in the event that an Acquiring Person becomes the beneficial owner of
15% or more of the Company's Common Shares then outstanding (other than pursuant
to a Permitted Offer), then each holder of a Right which has not theretofore
been exercised (other than Rights beneficially owned by the Acquiring Person,
which will thereafter be void) will thereafter have the right to receive, upon
exercise, Common Shares having a value equal to two times the Exercise Price.
Rights are not exercisable following the occurrence of an event as described
above until such time as the Rights are no longer redeemable by the Company as
set forth below.

         Right to Buy Acquiring Company Stock. Unless the Rights are earlier
redeemed, in the event that, after the Shares Acquisition Date (as defined
below), (i) the Company is acquired in a merger or other business combination
transaction, or (ii) the Company consummates a merger or other business
combination transaction in which the Company is the continuing or surviving
corporation, or (iii) 50% or more of the Company's assets or earning power are
sold, each holder of a Right which has not thereto fore been exercised (other
than Rights beneficially owned by the Acquiring Person, which will thereafter be
void) will thereafter have the right to receive, upon exercise, shares of common
stock of (i) the corporation acquiring the Company or (ii) the Company or (iii)
the purchaser of 50% or more of the Company's assets or earning power,
respectively, such shares in each case having a value equal to two times the
Exercise Price (unless the transaction satisfies certain conditions and is
consummated with a person who acquired shares pursuant to a Permitted Offer, in
which case the Rights will expire).

         Permitted Offer. A Permitted Offer means a tender offer for all
outstanding Common Shares that has been determined by a majority of the
Continuing Directors to be fair and otherwise in the best inter ests of the
Company and its stockholders. Where the Board of Directors has determined that a
tender offer constitutes a Permitted Offer, the Rights will not become
exercisable to purchase Common Shares or shares of the acquiring company (as the
case may be) at the discounted price described above.

         Exchange Provision. At any time after the acquisition by an Acquiring
Person of 15% or more of the Company's outstanding Common Shares and prior to
the acquisition by such Acquiring Person of 50% or more of the Company's
outstanding Common Shares, the Board of Directors of the Company may exchange
the Rights (other than Rights owned by the Acquiring Person), in whole or in
part, at an exchange ratio of one Common Share per Right.

         Redemption. At any time on or prior to the close of business on the
earlier of (i) the 10th day following the acquisition by an Acquiring Person of
15% or more of the Company's outstanding Common Shares (the "Shares Acquisition
Date") or such later date as may be determined by a majority of the Continuing
Directors and publicly announced by the Company, or (ii) the Final Expiration
Date of the Rights, the Company may redeem the Rights in whole, but not in part,
at a price of $.01 per Right.

         Adjustments to Prevent Dilution. The Exercise Price payable, the number
of Rights, and the number of Series A Preferred or Common Shares or other
securities or property issuable upon exercise of the Rights are subject to
adjustment from time to time in connection with the dilutive issuances by the
Company as set forth in the Rights Agreement. With certain exceptions, no
adjustment in the Exercise


                                       -4-
<PAGE>   5
Price will be required until cumulative adjustments require an adjustment of at
least 1% in such Exercise Price.

         Cash Paid Instead of Issuing Fractional Shares. No fractional portion
less than integral multiples of one Common Share will be issued upon exercise of
a Right and in lieu thereof, an adjustment in cash will be made based on the
market price of the Common Shares on the last trading date prior to the date of
exercise.

         No Stockholders' Rights Prior to Exercise. Until a Right is exercised,
the holder thereof, as such, will have no rights as a stockholder of the Company
(other than any rights resulting from such holder's ownership of Common Shares),
including, without limitation, the right to vote or to receive dividends.

         Amendment of Rights Agreement. The provisions of the Rights Agreement
may be supplemented or amended by the Board of Directors in any manner prior to
the close of business on the date of the acquisition by an Acquiring Person of
15% or more of the Company's outstanding Common Shares without the approval of
Rights holders. After the Distribution Date, the provisions of the Rights
Agreement may be amended by the Board in order to cure any ambiguity, defect or
inconsistency, to make changes which do not adversely affect the interests of
holders of Rights (excluding the interests of any Acquiring Person), or to
shorten or lengthen any time period under the Rights Agreement; provided,
however, that no amendment to adjust the time period governing redemption shall
be made at such time as the Rights are not redeemable.

         Rights and Preferences of the Series A Preferred. Series A Preferred
purchasable upon exercise of the Rights will not be redeemable. Each share of
Series A Preferred will be entitled to an aggregate dividend of 1,000 times the
dividend declared per Common Share. In the event of liquidation, the holders of
the Series A Preferred will be entitled to a minimum preferential liquidation
payment equal to $50,000 per share. Each share of Series A Preferred will have
1,000 votes, voting together with the Common Shares. In the event of any merger,
consolidation or other transaction in which the Common Shares are changed or
exchanged, each share of Series A Preferred will be entitled to receive 1,000
times the amount received per Common Share. These rights are protected by
customary anti-dilution provisions.

         Because of the nature of the dividend, liquidation and voting rights of
the shares of Series A Preferred, the value of the one one-thousandth interest
in a share of Series A Preferred purchasable upon exercise of each Right should
approximate the value of one Common Share.

         Certain Anti-takeover Effects. The Rights approved by the Board are
designed to protect and maximize the value of the outstanding equity interests
in the Company in the event of an unsolicited attempt by an acquiror to take
over the Company in a manner or on terms not approved by the Board of Directors.
Takeover attempts frequently include coercive tactics to deprive the Company's
Board of Directors and its stockholders of any real opportunity to determine the
destiny of the Company or to evaluate and protect the long-term value of the
Company. The Rights are not intended to prevent a takeover of the Company. The
Rights may be redeemed by the Company at $.01 per Right within ten


                                       -5-
<PAGE>   6
days (or such later date as may be determined by a majority of the Continuing
Directors) after the accumulation of 15% or more of the Company's shares by a
single acquiror or group. Accordingly, the Rights should not interfere with any
merger or business combination approved by the Board of Directors.

         Issuance of the Rights does not in any way weaken the financial
strength of the Company or interfere with its business plans. The issuance of
the Rights themselves has no dilutive effect, will not affect reported earnings
per share, should not be taxable to the Company or to its stockholders, and will
not change the way in which the Company's shares are presently traded. The
Company's Board of Directors believes that the Rights represent a sound and
reasonable means of addressing the complex issues of corporate policy created by
the current takeover environment.

         However, the Rights may have the effect of rendering more difficult or
discouraging an acquisition of the Company deemed undesirable by the Board of
Directors. The Rights may cause substantial dilution to a person or group that
attempts to acquire the Company on terms or in a manner not approved by the
Company's Board of Directors, except pursuant to an offer conditioned upon the
negation, purchase or redemption of the Rights.

Charter Provisions Relating to a Change in Control

                  Certain provisions of the Certificate of Incorporation and
Bylaws of the Company may be considered to have anti-takeover implications. Such
provisions could discourage certain attempts to obtain control of the Company,
even though such attempts might be beneficial to the Company and its
stockholders.

                  Nominations of Director Candidates and Introduction of
Business at Stockholder Meetings. The Bylaws of the Company contain an advance
notice procedure with regard to the nomination, other than by or at the
direction of the Board of Directors, of candidates for election as directors
(the "Nomination Procedure") and with regard to certain matters to be brought
before any meeting of stockholders (the "Business Procedure"). The Nomination
Procedure provides that only persons nominated by or at the direction of the
Board of Directors or by a stockholder who has given timely written notice in
proper form to the Company prior to the meeting, will be eligible for election
as directors. The Business Procedure provides that at a meeting of stockholders
only such business may be conducted as has been brought before the meeting by or
at the direction of the Board of Directors or by a stockholder who has given
timely written notice in proper form to the Company prior to the meeting of such
stockholder's intention to bring business before the meeting.

                  Authorized Stock. The Restated Certificate of Incorporation of
the Company authorizes 5,000,000 shares of Preferred Stock, with a par value of
$.001 per share. The Certificate of Incorporation authorizes the Board of
Directors to fix without further vote or action by the stockholders the
designation, powers, preferences, and rights of the shares of each series of
Preferred Stock and the qualifications, limitations or restrictions thereof
including, but not limited to, dividend rights, conversion privileges, voting
rights, terms of redemption and liquidation preferences.



                                       -6-
<PAGE>   7
                  Monetary Liability of Directors. The Certificate of
Incorporation of the Company provides that to the fullest extent permitted by
Delaware law, no director of the Company shall be personally liable to the
Company or its stockholders for monetary damages for breach of fiduciary duty as
a director. The Certificate of Incorporation also incorporates any future
amendments to Delaware law with respect to the elimination of such liability.

                  Actions by Written Consent of Stockholders. The Restated
Certificate of Incorporation of the Company provides that no action may taken by
the stockholders by written consent, and that stockholder actions may only be
taken at an annual or special meeting of stockholders.


Item 2.           Exhibits.

                  1.  Specimen certificate for the Company's Common Stock (3)

                  2.  Certificate of Incorporation of the Company (1)

                  3.  Restated Certificate of Incorporation of the Company (3)

                  4.  Bylaws of the Company (2)

                  5.  Preferred Shares Rights Agreement, dated as of
                      November 14, 1996, between ArthroCare Corporation and
                      Norwest Bank Minnesota, N.A., including the Certificate 
                      of Designations, the form of Rights Certificate and the 
                      Summary of Rights attached thereto as Exhibits A, B and 
                      C, respectively (3)

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

(1)  Incorporated by reference to Exhibit 3.1 to the Company's Registration
     Statement on Form S-1 filed on December 15, 1995 (Registration 
     No. 33-80453) (the "S-1 Registration Statement").

(2)  Incorporated by reference to Exhibit 3.3 to the S-1 Registration Statement.

(3)  Exhibit filed herewith.


                                       -7-
<PAGE>   8
                                    SIGNATURE


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

                                              ARTHROCARE CORPORATION


Date:  December  11, 1996
                                              By:/s/ J. CASEY MCGLYNN
                                                 ______________________________
                                                 J. Casey McGlynn
                                                 Secretary





<PAGE>   1
                                                                   EXHIBIT 1

      COMMON STOCK                                      COMMON STOCK
         NUMBER                                            SHARES
                             [ArthroCare
                              Corporation
                                LOGO]
                                             SEE REVERSE FOR STATEMENTS RELATING
                                                    TO RIGHTS, PREFERENCES,
                                                 PRIVILEGES AND RESTRICTIONS
                                                      CUSIP 043136 10 0

          INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE


THIS CERTIFIES THAT






is the owner of


  FULLY PAID AND NONASSESSABLE SHARES OF THE COMMON STOCK, $.001 PAR VALUE, OF

- -----------------------------ARTHROCARE CORPORATION ----------------------------

transferable on the books of the Corporation by the holder hereof in person or
by duly authorized attorney upon surrender of this Certificate properly
endorsed. This Certificate is not valid unless countersigned and registered by
the Transfer Agent and Registrar.

     WITNESS the facsimile seal of the Corporation and the facsimile signatures
of its duly authorized officers.


     Dated:
                             ARTHROCARE CORPORATION
                                   CORPORATE
                                      SEAL
                                    OCT. 20,
                                      1995
                                    DELAWARE
   /s/---------------                                /s/---------------     
        SECRETARY                                          PRESIDENT





COUNTERSIGNED AND REGISTERED:
      NORWEST BANK MINNESOTA, N.A.
                          TRANSFER AGENT
                           AND REGISTRAR
BY

                     AUTHORIZED SIGNATURE




<PAGE>   2
        The Corporation is authorized to issue two classes of stock, Common
Stock and Preferred Stock. The Board of Directors of the Corporation has the
authority to fix the number of shares and the designation of any series of
Preferred stock and to determine or alter the rights, preferences, privileges
and restrictions granted to or imposed upon any issued series of Preferred 
Stock.
        A statement of the rights, preferences, privileges and restrictions
granted to or imposed upon the respective classes or series of shares and upon
the holders thereof as established, from time to time, by the Certificate of
Incorporation of the Corporation and by any certificate of determination, the
number of shares constituting each class and series, and the designations
thereof, may be obtained by the holder hereof upon request and without charge
from the Corporation at its principal office.

        The following abbreviations, when used in the inscription of this
certificate, shall be construed as though they were written out in full
according to applicable laws or regulations:

<TABLE>
<S>                                                      <C>
        TEN COM - as tenants in common                   UNIF GIFT MIN - .....................CUSTODIAN.........................
        TEN ENT - as tenants by the entireless                                     (Cust)                           (Minor)
        JT TEN  - as joint tenants with right of                         Under Uniform Gifts to Minors 
                  survivorship and not as tenants                        Act....................................................
                  in common                                                                      (State)
                                                         UNIF TAX MIN ACT - ..............CUSTODIAN (unit) age..................
                                                                                (Cust)
                                                                         ................................under Uniform Transfers
                                                                                     (Minor)
                                                                         to Minors Act..........................................
                                                                                                     (State)
</TABLE>

 
    Additional abbreviations may also be used though not in the above list.

        FOR VALUE RECEIVED, ______________ hereby sell, assign and transfer unto

 PLEASE INSERT SOCIAL SECURITY OR OTHER
________________________________________
/                                       /
/_______________________________________/

_______________________________________________________________________________
    (PLEASE PRINT OR TYPE NAME AND ADDRESS, INCLUDING ZIP CODE OF ASSIGNEE)
_______________________________________________________________________________

_______________________________________________________________________________

_________________________________________________________________________Shares
of the common stock represented by the within Certificate, and do hereby
irrevocably constitute and appoint

_______________________________________________________________________Attorney
to transfer the said stock on the books of the within named Corporation with
full power of substitution in the premises.

Dated_____________________________

                                       X ______________________________________

                                       X ______________________________________
                                 Notice: THE SIGNATURE(S) TO THIS ASSIGNMENT 
                                         MUST CORRESPOND WITH THE NAME(S) AS
                                         WRITTEN UPON THE FACE OF THE 
                                         CERTIFICATE IN EVERY PARTICULAR, 
                                         WITHOUT ALTERATION OR ENLARGEMENT
                                         OR ANY CHANGE WHATEVER

Signature(s) Guaranteed





By_________________________________________
THE SIGNATURE(S) SHOULD BE GUARANTEED BY 
AN ELIGIBLE GUARANTOR INSTITUTION (BANKS,
STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS
AND CREDIT UNIONS WITH MEMBERSHIP IN AN
APPROVED MEDALLION SIGNATURE GUARANTEE 
PROGRAM, PURSUANT TO S.E.C. RULE 17ND-15.

        THIS CERTIFICATE ALSO EVIDENCES AND ENTITLES THE HOLDER HEREOF TO
CERTAIN RIGHTS AS SET FORTH IN A RIGHTS AGREEMENT BETWEEN ARTHROCARE
CORPORATION AND NORWEST BANK MINNESOTA, N.A., AS THE RIGHTS AGENT, DATED AS OF
NOVEMBER 14, 1996, (THE "RIGHTS AGREEMENT"), THE TERMS OF WHICH ARE HEREBY
INCORPORATED HEREIN BY REFERENCE AND A COPY OF WHICH IS ON FILE AT THE
PRINCIPAL EXECUTIVE OFFICES OF ARTHROCARE CORPORATION. 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, ARTHROCARE CORPORATION WILL MAIL TO THE HOLDER OF THIS CERTIFICATE
A COPY OF THE RIGHTS AGREEMENT WITHOUT CHARGE AFTER RECEIPT OF A WRITTEN
REQUEST THEREFOR. UNDER CERTAIN CIRCUMSTANCES SET FORTH IN THE RIGHTS
AGREEMENT, RIGHTS ISSUED TO, OR HELD BY, ANY PERSON WHO IS, WAS OR BECOMES AN
ACQUIRING PERSON OR ANY AFFILIATE OR ASSOCIATE THEREOF (AS SUCH TERMS ARE
DEFINED IN THE RIGHTS AGREEMENT), WHETHER CURRENTLY HELD BY OR ON BEHALF OF
SUCH PERSON OR BY ANY SUBSEQUENT HOLDER, MAY BECOME NULL AND VOID.





<PAGE>   1
                                                                EXHIBIT 3


                      RESTATED CERTIFICATE OF INCORPORATION

                                       OF

                             ARTHROCARE CORPORATION


         The following Restated Certificate of Incorporation of ArthroCare
Corporation (i) restates the provisions of the Certificate of Incorporation of
ArthroCare Corporation filed with the Secretary of State of the State of
Delaware on October 20, 1995, and (ii) supersedes the original Certificate of
Incorporation and all prior restatements thereof and amendments thereto in their
entirety.


                                    ARTICLE I

         The name of the corporation is ArthroCare Corporation. (the
"Corporation").


                                   ARTICLE II

         The address of the Corporation's registered office in the State of
Delaware is 1209 Orange Street, City of Wilmington, County of New Castle,
Delaware 19801. The name of its registered agent at such address is The
Corporation Trust Company.


                                   ARTICLE III

         The purpose of the Corporation is to engage in any lawful act or
activity for which corporations may be organized under the General Corporation
Law of Delaware.


                                   ARTICLE IV

         The Corporation is authorized to issue two classes of shares of stock
to be designated, respectively, Common Stock, $0.001 par value, and Preferred
Stock, $0.001 par value. The total number of shares that the Corporation is
authorized to issue is 25,000,000 shares. The number of shares of Common Stock
authorized is 20,000,000. The number of shares of Preferred authorized is
5,000,000.

         The Preferred Stock may be issued from time to time in one or more
series pursuant to a resolution or resolutions providing for such issue duly
adopted by the board of directors (authority to do so being hereby expressly
vested in the board). The board of directors is further authorized to determine
or alter the rights, preferences, privileges and restrictions granted to or
imposed upon any wholly unissued series of Preferred Stock and to fix the number
of shares of any series of Preferred Stock and the designation of any such
series of Preferred Stock. The board of directors, within the limits and
restrictions stated in any resolution or resolutions of the board of directors
originally fixing the number
<PAGE>   2
of shares constituting any series, may increase or decrease (but not below the
number of shares in any such series then outstanding) the number of shares of
any series subsequent to the issue of shares of that series.

         The authority of the board of directors with respect to each such class
or series shall include, without limitation of the foregoing, the right to
determine and fix:

                  (a) the distinctive designation of such class or series and
the number of shares to constitute such class or series;

                  (b) the rate at which dividends on the shares of such class or
series shall be declared and paid, or set aside for payment, whether dividends 
at the rate so determined shall be cumulative or accruing, and whether the 
shares of such class or series shall be entitled to any participating or other 
dividends in addition to dividends at the rate so determined, and if so, on 
what terms;

                  (c) the right or obligation, if any, of the corporation to 
redeem shares of the particular class or series of Preferred Stock and, if 
redeemable, the price, terms and manner of such redemption;

                  (d) the special and relative rights and preferences, if any,
and the amount or amounts per share, which the shares of such class or series of
Preferred Stock shall be entitled to receive upon any voluntary or involuntary
liquidation, dissolution or winding up of the Corporation;

                  (e) the terms and conditions, if any, upon which shares of
such class or series shall be convertible into, or exchangeable for, shares of
capital stock of any other class or series, including the price or prices or the
rate or rates of conversion or exchange and the terms of adjustment, if any;

                  (f) the obligation, if any, of the corporation to retire,
redeem or purchase shares of such class or series pursuant to a sinking fund or
fund of a similar nature or otherwise, and the terms and conditions of such
obligation;

                  (g) voting rights, if any, on the issuance of additional
shares of such class or series or any shares of any other class or series of
Preferred Stock;

                  (h) limitations, if any, on the issuance of additional shares
of such class or series or any shares of any other class or series of Preferred
Stock; and

                  (i) such other preferences, powers, qualifications, special or
relative rights and privileges thereof as the board of directors of the
corporation, acting in accordance with this Restated Certificate of
Incorporation, may deem advisable and are not inconsistent with law and the
provisions of this Restated Certificate of Incorporation.

                                       -2-
<PAGE>   3
                                    ARTICLE V

         The Corporation reserves the right to amend, alter, change, or repeal
any provision contained in this Certificate of Incorporation, in the manner now
or hereafter prescribed by statute, and all rights conferred upon the
stockholders herein are granted subject to this right.

                                   ARTICLE VI

         The Corporation is to have perpetual existence.


                                   ARTICLE VII

         1. Limitation of Liability. To the fullest extent permitted by the
General Corporation Law of the State of Delaware as the same exists or as may
hereafter be amended, a director of the Corporation shall not be personally
liable to the Corporation or its stockholders for monetary damages for breach of
fiduciary duty as a director.

         2. Indemnification. The Corporation may indemnify to the fullest extent
permitted by law any person made or threatened to be made a party to an action
or proceeding, whether criminal, civil, administrative or investigative, by
reason of the fact that such person or his or her testator or intestate is or
was a director, officer or employee of the Corporation, or any predecessor of
the Corporation, or serves or served at any other enterprise as a director,
officer or employee at the request of the Corporation or any predecessor to the
Corporation.

         3. Amendments. Neither any amendment nor repeal of this Article VII,
nor the adoption of any provision of the Corporation's Certificate of
Incorporation inconsistent with this Article VII, shall eliminate or reduce the
effect of this Article VII, in respect of any matter occurring, or any action or
proceeding accruing or arising or that, but for this Article VII, would accrue
or arise, prior to such amendment, repeal, or adoption of an inconsistent
provision.


                                  ARTICLE VIII

         In the event any shares of Preferred Stock shall be redeemed or
converted pursuant to the terms hereof, the shares so converted or redeemed
shall not revert to the status of authorized but unissued shares, but instead
shall be canceled and shall not be re-issuable by the Corporation.



                                       -3-
<PAGE>   4
                                   ARTICLE IX

         Holders of stock of any class or series of this corporation shall not
be entitled to cumulate their votes for the election of directors or any other
matter submitted to a vote of the stockholders, unless such cumulative voting is
required pursuant to Sections 2115 and/or 301.5 of the California Corporations
Code, in which event each such holder shall be entitled to as many votes as
shall equal the number of votes which (except for this provision as to
cumulative voting) such holder would be entitled to cast for the election of
directors with respect to his shares of stock multiplied by the number of
directors to be elected by him, and the holder may cast all of such votes for a
single director or may distribute them among the number of directors to be voted
for, or for any two or more of them as such holder may see fit, so long as the
name of the candidate for director shall have been placed in nomination prior to
the voting and the stockholder, or any other holder of the same class or series
of stock, has given notice at the meeting prior to the voting of the intention
to cumulate votes.

                                    ARTICLE X

         1. Number of Directors. The number of directors which constitutes the
whole Board of Directors of the corporation shall be designated in the Bylaws of
the corporation.

         2. Election of Directors. Elections of directors need not be by written
ballot unless the Bylaws of the corporation shall so provide.


                                   ARTICLE XI

         In furtherance and not in limitation of the powers conferred by
statute, the Board of Directors is expressly authorized to make, alter, amend or
repeal the Bylaws of the corporation.


                                   ARTICLE XII

         Immediately upon the closing of a public offering pursuant to an
effective registration statement under the Securities Act of 1933, as amended,
covering any of the corporation's securities (as that term is defined under the
Securities Act of 1933, as then in effect), no action shall be taken by the
stockholders of the corporation except at an annual or special meeting of the
stockholders called in accordance with the Bylaws of the corporation and no
action shall be taken by the stockholders by written consent.


                                  ARTICLE XIII

         Meetings of stockholders may be held within or without the State of
Delaware, as the Bylaws may provide. The books of the Corporation may be kept
(subject to any provision contained in the statutes) outside of the State of
Delaware at such place or places as may be designated from time to time by the
Board of Directors or in the Bylaws of the Corporation.

                                       -4-
<PAGE>   5
         This Restated Certificate of Incorporation has been duly adopted by the
board of directors of the Corporation in accordance with the provisions of
Sections 242 and 245 of the General Corporation Law of the State of Delaware, as
amended.

         The Restated Certificate of Incorporation restates and integrates and
further amends the provisions of the Corporation's Certificate of Incorporation.

         IN WITNESS WHEREOF, ArthroCare Corporation has caused this certificate
to be signed by Hira V. Thapliyal, its President, and J. Casey McGlynn, its
Secretary, this 9th day of February, 1996.


                                       By: /s/ HIRA V. THAPLIYAL        
                                           _____________________________________
                                            Hira V. Thapliyal, President



                                     Attest: /s/ J. CASEY MCGLYNN
                                            ___________________________________
                                            J. Casey McGlynn, Secretary

                                       -5-


<PAGE>   1
                                                                EXHIBIT 5

















                             ARTHROCARE CORPORATION

                                       AND

                          NORWEST BANK MINNESOTA, N.A.

                                  RIGHTS AGENT









                        PREFERRED SHARES RIGHTS AGREEMENT

                          DATED AS OF NOVEMBER 14, 1996
<PAGE>   2
                                TABLE OF CONTENTS
<TABLE>
<CAPTION>

                                                                                                                   PAGE
                                                                                                                   ----

<S>               <C>                                                                                              <C>
Section 1.        Certain Definitions.................................................................................1

Section 2.        Appointment of Rights Agent.........................................................................7

Section 3.        Issuance of Rights Certificates.....................................................................7

Section 4.        Form of Rights Certificates.........................................................................9

Section 5.        Countersignature and Registration..................................................................10

Section 6.        Transfer, Split Up, Combination and Exchange of Rights Certificates; Mutilated, Destroyed, 
                     Lost or Stolen Rights Certificates..............................................................10

Section 7.        Exercise of Rights; Exercise Price; Expiration Date of Rights......................................11

Section 8.        Cancellation and Destruction of Rights Certificates................................................13

Section 9.        Reservation and Availability of Preferred Shares...................................................13

Section 10.       Record Date........................................................................................14

Section 11.       Adjustment of Exercise Price, Number of Shares or Number of Rights.................................15

Section 12.       Certificate of Adjusted Exercise Price or Number of Shares.........................................21

Section 13.       Consolidation, Merger or Sale or Transfer of Assets or Earning Power...............................21

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

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

Section 16.       Agreement of Rights Holders........................................................................26

Section 17.       Rights Certificate Holder Not Deemed a Stockholder.................................................27

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

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

Section 20.       Duties of Rights Agent.............................................................................28
</TABLE>

                                       -i-
<PAGE>   3
<TABLE>

<S>               <C>                                                                                                <C>
Section 21.       Change of Rights Agent.............................................................................30

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

Section 23.       Redemption.........................................................................................31

Section 24.       Exchange...........................................................................................32

Section 25.       Notice of Certain Events...........................................................................34

Section 26.       Notices............................................................................................34

Section 27.       Supplements and Amendments.........................................................................35

Section 28.       Successors.........................................................................................35

Section 29.       Determinations and Actions by the Board of Directors, etc..........................................35

Section 30.       Benefits of this Agreement.........................................................................36

Section 31.       Severability.......................................................................................36

Section 32.       Governing Law......................................................................................36

Section 33.       Counterparts.......................................................................................36

Section 34.       Descriptive Headings...............................................................................36


EXHIBITS

Exhibit A         Form of Certificate of Designation

Exhibit B         Form of Rights Certificate

Exhibit C         Summary of Rights
</TABLE>

                                      -ii-
<PAGE>   4
                                RIGHTS AGREEMENT


         Agreement, dated as of November 14, 1996, between ArthroCare
Corporation, a Delaware corporation, and Norwest Bank Minnesota, N.A.

         On November 14, 1996 (the "RIGHTS DIVIDEND DECLARATION DATE"), the
Board of Directors of the Company authorized and declared a dividend of one
Preferred Share Purchase Right (a "RIGHT") for each Common Share (as hereinafter
defined) of the Company outstanding as of the Close of Business (as hereinafter
defined) on December 13, 1996 (the "RECORD DATE"), each Right representing the
right to purchase one one-thousandth of a share of Series A Participating
Preferred Stock (as such number may be adjusted pursuant to the provisions of
this Agreement), having the rights, preferences and privileges set forth in the
form of Certificate of Designations of Rights, Preferences and Privileges of
Series A Participating Preferred Stock attached hereto as Exhibit A, upon the
terms and subject to the conditions herein set forth, and further authorized and
directed the issuance of one Right (as such number may be adjusted pursuant to
the provisions of this Agreement) with respect to each Common Share that shall
become outstanding between the Record Date and the earlier of the Distribution
Date and the Expiration Date (as such terms are hereinafter defined), and in
certain circumstances after the Distribution Date.

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

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

                    "ACQUIRING PERSON" shall mean any Person who or which,
together with all Affiliates and Associates of such Person, shall be the
Beneficial Owner of 15% or more of the Common Shares then outstanding, but shall
not include the Company, any Subsidiary of the Company or any employee benefit
plan of the Company or of any Subsidiary of the Company, or any entity holding
Common Shares for or pursuant to the terms of any such plan. Notwithstanding the
foregoing, no Person shall be deemed to be an Acquiring Person as the result of
an acquisition of Common Shares by the Company which, by reducing the number of
shares outstanding, increases the proportionate number of shares beneficially
owned by such Person to 15% or more of the Common Shares of the Company then
outstanding; provided, however, that if a Person shall become the Beneficial
Owner of 15% or more of the Common Shares of the Company then outstanding by
reason of share purchases by the Company and shall, after such share purchases
by the Company, become the Beneficial Owner of any additional Common Shares of
the Company (other than pursuant to a dividend or distribution paid or made by
the Company on the outstanding Common Shares in Common Shares or pursuant to a
split or subdivision of the outstanding Common Shares), then such Person shall
be deemed to be an Acquiring Person unless upon becoming the Beneficial Owner of
such additional Common Shares of the Company such Person does not beneficially
own 15% or more of the Common Shares of the Company then outstanding.
Notwithstanding the foregoing, (i) if a majority of the Continuing Directors 
then in office determines in good faith that a Person who would otherwise be 
an "Acquiring Person," as defined pursuant to the 



<PAGE>   5
foregoing provisions of this paragraph (a), has become such inadvertently
(including, without limitation, because (A) such Person was unaware that it
beneficially owned a percentage of the Common Shares that would otherwise cause
such Person to be an "Acquiring Person," as defined pursuant to the foregoing
provisions of this paragraph (a), or (B) such Person was aware of the extent of
the Common Shares it beneficially owned but had no actual knowledge of the
consequences of such beneficial ownership under this Agreement) and without any
intention of changing or influencing control of the Company, and if such Person
divested or divests as promptly as practicable a sufficient number of Common
Shares so that such Person would no longer be an "Acquiring Person," as defined
pursuant to the foregoing provisions of this paragraph (a), then such Person
shall not be deemed to be or to have become an "Acquiring Person" for any
purposes of this Agreement; and (ii) if, as of the date hereof, any Person is
the Beneficial Owner of 15% or more of the Common Shares outstanding, such
Person shall not be or become an "Acquiring Person," as defined pursuant to the
foregoing provisions of this paragraph (a), unless and until such time as such
Person shall become the Beneficial Owner of additional Common Shares (other than
pursuant to a dividend or distribution paid or made by the Company on the
outstanding Common Shares in Common Shares or pursuant to a split or subdivision
of the outstanding Common Shares), unless, upon becoming the Beneficial Owner of
such additional Common Shares, such Person is not then the Beneficial Owner of
15% or more of the Common Shares then outstanding.

                    "ADJUSTMENT FRACTION" shall have the meaning set forth in
Section 11(a)(i) hereof.

                    "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 of this Agreement.

                    A Person shall be deemed the "BENEFICIAL OWNER" of and shall
be deemed to "BENEFICIALLY OWN" any securities:

                    1. which such Person or any of such Person's Affiliates or
Associates beneficially owns, directly or indirectly, for purposes of Section
13(d) of the Exchange Act and Rule 13d-3 thereunder (or any comparable or
successor law or regulation);

                    2. which such Person or any of such Person's Affiliates or
Associates has (A) the right to acquire (whether such right is exercisable
immediately or only after the passage of time) pursuant to any agreement,
arrangement or understanding (other than customary agreements with and between
underwriters and selling group members with respect to a bona fide public
offering of securities), or upon the exercise of conversion rights, exchange
rights, rights (other than the Rights), warrants or options, or otherwise;
provided, however, that a Person shall not be deemed pursuant to this Section
1(e)(ii)(A) to be the Beneficial Owner of, or to beneficially own, (1)
securities tendered pursuant to a tender or exchange offer made by or on behalf
of such Person or any of such Person's Affiliates or Associates until such
tendered securities are accepted for purchase or exchange, or (2) securities
which a Person or any of such Person's Affiliates or Associates may be deemed to
have the right to acquire pursuant to any merger or other acquisition agreement
between the Company and such Person (or one or more of its Affiliates or
Associates) if such agreement has been approved by the Board of Directors of the
Company prior to there being an Acquiring Person; or (B) the right to vote
pursuant to any


                                       -2-
<PAGE>   6
agreement, arrangement or understanding; provided, however, that a Person shall
not be deemed the Beneficial Owner of, or to beneficially own, any security
under this Section 1(e)(ii)(B) if the agreement, arrangement or understanding to
vote such security (1) arises solely from a revocable proxy or consent given to
such Person in response to a public proxy or consent solicitation made pursuant
to, and in accordance with, the applicable rules and regulations of the Exchange
Act and (2) is not also then reportable on Schedule 13D under the Exchange Act
(or any comparable or successor report); or

                    3. 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 (other than customary agreements
with and between underwriters and selling group members with respect to a bona
fide public offering of securities) for the purpose of acquiring, holding,
voting (except to the extent contemplated by the proviso to Section 1(e)(ii)(B))
or disposing of any securities of the Company; provided, however, that in no
case shall an officer or director of the Company be deemed (x) the Beneficial
Owner of any securities beneficially owned by another officer or director of the
Company solely by reason of actions undertaken by such persons in their capacity
as officers or directors of the Company or (y) the Beneficial Owner of
securities held of record by the trustee of any employee benefit plan of the
Company or any Subsidiary of the Company for the benefit of any employee of the
Company or any Subsidiary of the Company, other than the officer or director, by
reason of any influence that such officer or director may have over the voting
of the securities held in the plan.

                    "BUSINESS DAY" shall mean any day other than a Saturday,
Sunday or a day on which banking institutions in New York are authorized or
obligated by law or executive order to close.

                    "CLOSE OF BUSINESS" on any given date shall mean 5:00 P.M.,
Central time, on such date; provided, however, that if such date is not a
Business Day it shall mean 5:00 P.M., Central time, on the next succeeding
Business Day.

                    "COMMON SHARES" when used with reference to the Company
shall mean the shares of Common Stock of the Company, $0.001 par value. Common
Shares when used with reference to any Person other than the Company shall mean
the capital stock (or equity interest) with the greatest voting power of such
other Person or, if such other Person is a Subsidiary of another Person, the
Person or Persons which ultimately control such first-mentioned Person.

                    "COMMON STOCK EQUIVALENTS" shall have the meaning set forth
in Section 11(a)(iii) hereof.

                    "COMPANY" shall mean ArthroCare Corporation, a Delaware
corporation, subject to the terms of Section 13(a)(iii)(C) hereof.

                    "CONTINUING DIRECTOR" shall mean (i) any member of the Board
of Directors of the Company who, while a member of the Board, is not an
Acquiring Person, or an Affiliate or Associate of an Acquiring Person, or a
representative of an Acquiring Person or of any such Affiliate or Associate, and
who was a member of the Board prior to there being an Acquiring Person, and (ii)
any Person who 

                                       -3-
<PAGE>   7
subsequently becomes a member of the Board and who, while a member of the Board,
is not an Acquiring Person, or an Affiliate or Associate of an Acquiring Person,
or a represen tative of an Acquiring Person or of any such 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.

                    "CURRENT PER SHARE MARKET PRICE" of any security (a
"Security" for purposes of this definition), for all computations other than
those made pursuant to Section 11(a)(iii) hereof, shall mean the average of the
daily closing prices per share of such Security for the thirty (30) consecutive
Trading Days immediately prior to such date, and for purposes of computations
made pursuant to Section 11(a)(iii) hereof, the Current Per Share Market Price
of any Security on any date shall be deemed to be the average of the daily
closing prices per share of such Security for the ten (10) consecutive Trading
Days immediately prior to such date; provided, however, that in the event that
the Current Per Share Market Price of the Security is determined during a period
following the announcement by the issuer of such Security of (i) a dividend or
distribution on such Security payable in shares of such Security or securities
convertible into such shares or (ii) any subdivision, combination or
reclassification of such Security, and prior to the expiration of the applicable
thirty (30) Trading Day or ten (10) Trading Day period, after the ex-dividend
date for such dividend or distribution, or the record date for such subdivision,
combination or reclassification, then, and in each such case, the Current Per
Share Market Price shall be appropriately adjusted to reflect the current market
price per share equivalent of such Security. The closing price for each day
shall be the last sale price, regular way, or, in case no such sale takes place
on such day, the average of the closing bid and asked prices, regular way, in
either case as reported in the principal consolidated transaction reporting
system with respect to securities listed or admitted to trading on the New York
Stock Exchange or, if the Security is not listed or admitted to trading on the
New York Stock Exchange, as reported in the principal consolidated transaction
reporting system with respect to securities listed on the principal national
securities exchange on which the Security is listed or admitted to trading or,
if the Security is not listed or admitted to trading on any national securities
exchange, the last sale price or, if such last sale price is not reported, the
average of the high bid and low asked prices in the over-the-counter market, as
reported by Nasdaq or such other system then in use, or, if on any such date the
Security is not quoted by any such organization, the average of the closing bid
and asked prices as furnished by a professional market maker making a market in
the Security selected by the Board of Directors of the Company. If on any such
date no market maker is making a market in the Security, 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. If the Preferred Shares are not publicly traded, the
Current Per Share Market Price of the Preferred Shares shall be conclusively
deemed to be the Current Per Share Market Price of the Common Shares as
determined pursuant to this Section 1(k), as appropriately adjusted to reflect
any stock split, stock dividend or similar transaction occurring after the date
hereof, multiplied by 1000. If the Security is not publicly held or so listed or
traded, Current Per Share Market Price shall mean the fair value per share as
determined in good faith by the Board of Directors of the Company, whose
determination shall be described in a statement filed with the Rights Agent and
shall be conclusive for all purposes.

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


                                       -4-
<PAGE>   8
                    "DISTRIBUTION DATE" shall mean the earlier of (i) the Close
of Business on the tenth day (or such later date as may be determined by action
of a majority of Continuing Directors then in office) after the Shares
Acquisition Date (or, if the tenth day after the Shares Acquisition Date occurs
before the Record Date, the Close of Business on the Record Date) or (ii) the
Close of Business on the tenth Business Day (or such later date as may be
determined by action of a majority of Continuing Directors then in office) after
the date that a tender or exchange offer by any Person (other than the Company,
any Subsidiary of the Company, any employee benefit plan of the Company or of
any Subsidiary of the Company, or any 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, assuming the
successful consummation thereof, such Person would be an Acquiring Person;
provided, however, that in no event shall the Distribution Date occur until the
date on which the Company's Registration Statement on Form 8-A filed with the
Securities and Exchange Commission for the purpose of registering the Preferred
Shares Purchase Rights is declared effective.

                    "EQUIVALENT SHARES" shall mean Preferred Shares and any
other class or series of capital stock of the Company which is entitled to the
same rights, privileges and preferences as the Preferred Shares.

                    "EXCHANGE ACT" shall mean the Securities Exchange Act of
1934, as amended.

                    "EXCHANGE RATIO" shall have the meaning set forth in Section
24(a) hereof.

                    "EXERCISE PRICE" shall have the meaning set forth in Section
4(a) hereof.

                    "EXPIRATION DATE" shall mean the earliest to occur of: (i)
the Close of Business on the Final Expiration Date, (ii) the Redemption Date,
(iii) consummation of any transaction contemplated by Section 13(f) hereof, or
(iv) the time at which the Board of Directors orders the exchange of the Rights
as provided in Section 24 hereof.

                    "FINAL EXPIRATION DATE" shall mean November 14, 2006.

                    "NASDAQ" shall mean the National Association of Securities
Dealers, Inc. Automated Quotations System.

                    "PERMITTED OFFER" shall mean a tender offer for all
outstanding Common Shares made in the manner prescribed by Section 14(d) of the
Exchange Act and the rules and regulations promulgated thereunder; provided,
however, that such tender offer occurs at a time when Continuing Directors are
in office and a majority of the Continuing Directors then in office has
determined that the offer is both fair and otherwise in the best interests of
the Company and its stockholders (taking into account all factors that such
Continuing Directors deem relevant).

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



                                       -5-
<PAGE>   9
                    "POST-EVENT TRANSFEREE" shall have the meaning set forth in
Section 7(e) hereof.

                    "PREFERRED SHARES" shall mean shares of Series A
Participating Preferred Stock, $0.001 par value, of the Company.

                    "PRE-EVENT TRANSFEREE" shall have the meaning set forth in
Section 7(e) hereof.

                    "PRINCIPAL PARTY" shall have the meaning set forth in
Section 13(b) hereof.

                    "RECORD DATE" shall have the meaning set forth in the
recitals at the beginning of this Agreement.

                    "REDEMPTION DATE"shall have the meaning set forth in Section
23(a) hereof.

                    "REDEMPTION PRICE" shall have the meaning set forth in
Section 23(a) hereof.

                    "RIGHTS AGENT" shall mean Norwest Bank Minnesota, N.A. or
its successor or replacement as provided in Sections 19 and 21 hereof.

                    "RIGHTS CERTIFICATE" shall mean a certificate substantially
in the form attached hereto as Exhibit B.

                    "RIGHTS DIVIDEND DECLARATION DATE" shall have the meaning
set forth in the recitals at the beginning of this Agreement.

                    "SECTION 11(a)(ii) TRIGGER DATE" shall have the meaning set
forth in Section 11(a)(iii) hereof.

                    "SECTION 13 EVENT" shall mean any event described in clause
(i), (ii) or (iii) of Section 13(a) hereof.

                    "SECURITIES ACT" shall mean the Securities Act of 1933, as
amended.

                    "SHARES 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; provided that, if such Person is determined not to have become an
Acquiring Person pursuant to Section 1(a) hereof, then no Shares Acquisition
Date shall be deemed to have occurred.

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

                    "SUBSIDIARY" of any Person shall mean any corporation or
other entity of which an amount of voting securities sufficient to elect a
majority of the directors or Persons having similar 

                                       -6-
<PAGE>   10
authority of such corporation or other entity is beneficially owned, directly or
indirectly, by such Person, or any corporation or other entity otherwise
controlled by such Person.

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

                    "SUMMARY OF RIGHTS" shall mean a summary of this Agreement
substantially in the form attached hereto as Exhibit C.

                    "TOTAL EXERCISE PRICE" shall have the meaning set forth in
Section 4(a) hereof.

                    "TRADING DAY" shall mean a day on which the principal
national securities exchange on which a referenced security is listed or
admitted to trading is open for the transaction of business or, if a referenced
security is not listed or admitted to trading on any national securities
exchange, a Business Day.

                    A "TRIGGERING EVENT" shall be deemed to have occurred upon
any Person, becoming an Acquiring Person.

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

         Section 3. Issuance of Rights Certificates.

                    Until the Distribution Date, (i) the Rights will be
evidenced (subject to the provisions of Sections 3(b), 3(b) and 3(c) hereof) by
the certificates for Common Shares registered in the names of the holders
thereof (which certificates shall also be deemed to be Rights Certificates)
and not by separate Rights Certificates and (ii) the right to receive Rights
Certificates will be transferable only in connection with the transfer of Common
Shares. Until the earlier of the Distribution Date or the Expiration Date, the
surrender for transfer of certificates for Common Shares shall also constitute
the surrender for transfer of the Rights associated with the Common Shares
represented thereby. As soon as practicable after the Distribution Date, the
Company will prepare and execute, the Rights Agent will countersign, and the
Company will send or cause to be sent (and the Rights Agent will, if requested,
send) by first-class, postage-prepaid mail, to each record holder of Common
Shares as of the Close of Business on the Distribution Date, at the address of
such holder shown on the records of the Company, a Rights Certificate evidencing
one Right for each Common Share so held, subject to adjustment as provided
herein. In the event that an adjustment in the number of Rights per Common Share
has been made pursuant to Section 11 hereof, then 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 the Distribution Date, the
Rights will be evidenced solely by such Rights Certificates and may be
transferred by the transfer of the Rights Certificates as permitted hereby,



                                       -7-
<PAGE>   11
separately and apart from any transfer of Common Shares, and the holders of such
Rights Certificates as listed in the records of the Company or any transfer
agent or registrar for the Rights shall be the record holders thereof.

                    On the Record Date or as soon as practicable thereafter, the
Company will send a copy of the Summary of Rights by first-class,
postage-prepaid mail, to each record holder of Common Shares as of the Close of
Business on the Record Date, at the address of such holder shown on the records
of the Company's transfer agent and registrar. With respect to certificates for
Common Shares outstanding as of the Record Date, until the Distribution Date,
the Rights will be evidenced by such certificates registered in the names of the
holders thereof together with the Summary of Rights. Until the Distribution Date
(or, if earlier, the Expiration Date), the surrender for transfer of any
certificate for Common Shares outstanding on the Record Date, with or without a
copy of the Summary of Rights, shall also constitute the transfer of the Rights
associated with the Common Shares represented thereby.

                    Unless the Board of Directors by resolution adopted at or
before the time of the issuance of any Common Shares specifies to the contrary,
Rights shall be issued in respect of all Common Shares that are issued after the
Record Date but prior to the earlier of the Distribution Date or the Expiration
Date or, in certain circumstances provided in Section 22 hereof, after the
Distribution Date. Certificates representing such Common Shares 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 A RIGHTS AGREEMENT BETWEEN ARTHROCARE
         CORPORATION AND NORWEST BANK MINNESOTA, N.A., AS THE RIGHTS AGENT,
         DATED AS OF NOVEMBER 14, 1996, (THE "RIGHTS AGREEMENT"), THE TERMS OF
         WHICH ARE HEREBY INCORPORATED HEREIN BY REFERENCE AND A COPY OF WHICH
         IS ON FILE AT THE PRINCIPAL EXECUTIVE OFFICES OF ARTHROCARE 
         CORPORATION.  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. ARTHROCARE CORPORATION
         WILL MAIL TO THE HOLDER OF THIS CERTIFICATE A COPY OF THE RIGHTS 
         AGREEMENT WITHOUT CHARGE AFTER RECEIPT OF A WRITTEN REQUEST THEREFOR. 
         UNDER CERTAIN CIRCUMSTANCES SET FORTH IN THE RIGHTS AGREEMENT, RIGHTS 
         ISSUED TO, OR HELD BY, ANY PERSON WHO IS, WAS OR BECOMES AN ACQUIRING 
         PERSON OR ANY AFFILIATE OR ASSOCIATE THEREOF (AS SUCH TERMS ARE DEFINED
         IN THE RIGHTS AGREEMENT), WHETHER CURRENTLY HELD BY OR ON BEHALF OF 
         SUCH PERSON OR BY ANY SUBSEQUENT HOLDER, MAY BECOME NULL AND VOID.

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 Shares represented by such certificates shall be
evidenced by such certificates alone, and the surrender for transfer of any such


                                       -8-
<PAGE>   12
certificate shall also constitute the transfer of the Rights associated with the
Common Shares represented thereby.

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

         Section 4. Form of Rights Certificates.

                    The Rights Certificates (and the forms of election to
purchase Common Shares and of assignment to be printed on the reverse thereof)
shall be substantially in the form of Exhibit B hereto and may have such marks
of identification or designation and such legends, summaries or endorsements
printed thereon as the Company may deem appropriate and as are not inconsistent
with the provisions of this Agreement, or as may be required to comply with any
applicable law or with any rule or regulation made pursuant thereto or with any
rule or regulation of any stock exchange or a national market system, on which
the Rights may from time to time be listed or included, 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 (or in
the case of Rights issued with respect to Common Shares issued by the Company
after the Record Date, as of the date of issuance of such Common Shares) and on
their face shall entitle the holders thereof to purchase such number of
one-thousandths of a Preferred Share as shall be set forth therein at the price
set forth therein (such exercise price per one one-thousandth of a Preferred
Share being hereinafter referred to as the "EXERCISE PRICE" and the aggregate
Exercise Price of all Preferred Shares issuable upon exercise of one Right being
hereinafter referred to as the "TOTAL EXERCISE PRICE"), but the number and type
of securities purchasable upon the exercise of each Right and the Exercise Price
shall be subject to adjustment as provided herein.

                    Any Rights Certificate issued pursuant to Section 3(a) or
Section 22 hereof that represents Rights beneficially owned by: (i) an Acquiring
Person or any Associate or Affiliate of an Acquiring Person, (ii) a transferee
of an Acquiring Person (or of any such Associate or Affiliate) who becomes a
transferee after the Acquiring Person becomes such or (iii) a transferee of an
Acquiring Person (or of any such Associate or Affiliate) who becomes a
transferee prior to or concur rently with the Acquiring Person becoming such and
receives such Rights pursuant to either (A) a transfer (whether or not for
consideration) from the Acquiring Person to holders of equity interests in such
Acquiring Person or to any Person with whom such Acquiring Person has any
continuing agreement, arrangement or understanding regarding the transferred
Rights or (B) a transfer which a majority of the Continuing Directors then in
office 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, replace ment or adjustment of any other Rights Certificate referred to
in this sentence, shall contain (to the extent feasible) the following legend:

         THE RIGHTS REPRESENTED BY THIS RIGHTS CERTIFICATE ARE OR WERE
         BENEFICIALLY OWNED BY A PERSON WHO WAS OR BECAME AN ACQUIRING PERSON OR
         AN AFFILIATE OR ASSOCIATE OF AN ACQUIRING 



                                       -9-
<PAGE>   13
         PERSON (AS SUCH TERMS ARE DEFINED IN THE RIGHTS AGREEMENT). 
         ACCORDINGLY, THIS RIGHTS CERTIFICATE AND THE RIGHTS REPRESENTED HEREBY
         MAY BECOME NULL AND VOID IN THE CIRCUMSTANCES SPECIFIED IN SECTION 7(e)
         OF THE RIGHTS AGREEMENT.

         Section 5. Countersignature and Registration.

                    The Rights Certificates shall be executed on behalf of the
Company by its Chairman of the Board, its Chief Executive Officer, its Chief
Financial Officer, its President or any Vice President, either manually or by
facsimile signature, and by the Secretary or an Assistant Secretary of the
Company, either manually or by facsimile signature, and shall have affixed
thereto the Company's seal (if any) or a facsimile thereof. The Rights
Certificates shall be manually countersigned by the Rights Agent and shall not
be valid for any purpose unless countersigned. In case any officer of the
Company who shall have signed any of the 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 on behalf of the Company had not ceased to be such officer of the
Company; and any Rights Certificate may be signed on behalf of the Company by
any person who, at the actual date of the execution of such Rights Certificate,
shall be a proper officer of the Company to sign such Rights Certificate,
although at the date of the execution of this Rights Agreement any such person
was not such an officer.

                    Following the Distribution Date, the Rights Agent will keep
or cause to be kept, at its office designated for such purposes, 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.

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

                    Subject to the provisions of Sections 7(e), 14 and 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 Expira tion Date, any Rights
Certificate or Rights Certificates may be transferred, split up, combined or
exchanged for another Rights Certificate or Rights Certificates, entitling the
registered holder to purchase a like number of one-thousandths of a Preferred
Share (or, following a Triggering Event, other securities, cash or other assets,
as the case may be) as the Rights Certificate or Rights Certifi cates
surrendered then entitled such holder to purchase. Any registered holder
desiring to transfer, split up, combine or exchange any Rights Certificate or
Rights Certificates shall make such request in writing delivered to the Rights
Agent, and shall surrender the Rights Certificate or Rights Certificates to be
transferred, split up, combined or exchanged at the office of the Rights Agent
designated for such purpose. Neither the Rights Agent nor the Company shall be
obligated to take any action whatsoever with respect to the transfer of any such
surrendered Rights Certificate until the registered holder shall have completed
and signed the certificate contained in the form of assignment on the reverse
side of such Rights Certificate and shall 


                                      -10-
<PAGE>   14
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 Sections
7(e), 14 and 24 hereof, countersign and deliver to the person entitled thereto a
Rights Certificate or Rights Certificates, as the case may be, as so requested.
The Company may require payment of a sum sufficient to cover any tax or
governmental charge that may be imposed in connection with any transfer, split
up, combination or exchange of Rights Certificates.

                    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, at the Company's request,
reimbursement to the Company and the Rights Agent of all reasonable expenses
incidental thereto, and upon surrender to the Rights Agent and cancellation of
the Rights Certificate if mutilated, the Company will make and deliver a new
Rights Certificate of like tenor to the Rights Agent for delivery to the
registered holder in lieu of the Rights Certificate so lost, stolen, destroyed
or mutilated.

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

                    Subject to Sections 7(e), 23(b) and 24(b) hereof, the
registered holder of any Rights Certificate may exercise the Rights evidenced
thereby (except as otherwise provided herein) in whole or in part at any time
after the Distribution Date and prior to the Close of Business on the
Expiration Date by surrender of the Rights Certificate, with the form of
election to purchase on the reverse side thereof duly executed, to the Rights
Agent at the office of the Rights Agent designated for such purpose, together
with payment of the Exercise Price for each one-thousandth of a Preferred Share
(or, following a Triggering Event, other securities, cash or other assets as the
case may be) as to which the Rights are exercised.

                    The Exercise Price for each one-thousandth of a Preferred
Share issuable pursuant to the exercise of a Right shall initially be Fifty
Dollars ($50.00), shall be subject to adjustment from time to time as provided
in Sections 11 and 13 hereof and shall be payable in lawful money of the United
States of America in accordance with paragraph (c) below.

                    Upon receipt of a Rights Certificate representing
exercisable Rights, with the form of election to purchase duly executed,
accompanied by payment of the Exercise Price for the number of one-thousandths
of a Preferred Share (or, following a Triggering Event, other securities, cash
or other assets as the case may be) to be purchased and an amount equal to any
applicable transfer tax required to be paid by the holder of such Rights
Certificate in accordance with Section 9(e) hereof, the Rights Agent shall,
subject to Section 20(k) hereof, thereupon promptly (i) (A) requisition from any
transfer agent of the Preferred Shares (or make available, if the Rights Agent
is the transfer agent for the Preferred Shares) a certificate or certificates
for the number of one-thousandths of a Preferred Share (or, following a
Triggering Event, other securities, cash or other assets as the case may be) 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 one-thousandths of a Preferred Share (or, following
a Triggering Event, other securities, cash or other assets as the case may be)
issuable upon exercise of the Rights hereunder with a depositary agent,
requisition from the depositary agent depositary 


                                      -11-
<PAGE>   15
receipts representing such number of one-thousandths of a Preferred Share (or,
following a Triggering Event, other securities, cash or other assets as the case
may be) as are to be purchased (in which case certificates for the Preferred
Shares (or, following a Triggering Event, other securities, cash or other assets
as the case may be) represented by such receipts shall be deposited by the
transfer agent with the depositary agent) and the Company hereby directs the
depositary agent to comply with such request, (ii) when appropriate, requisition
from the Company the amount of cash to be paid in lieu of issuance of fractional
shares in accordance with Section 14 hereof, (iii) after receipt of such
certificates or depositary receipts, cause the same to be delivered to or upon
the order of the registered holder of such Rights Certificate, registered in
such name or names as may be designated by such holder and (iv) when
appropriate, after receipt thereof, deliver such cash to or upon the order of
the registered holder of such Rights Certificate. The payment of the Exercise
Price (as such amount may be reduced (including to zero) pursuant to Section
11(a)(iii) hereof) and an amount equal to any applicable transfer tax required
to be paid by the holder of such Rights Certificate in accordance with Section
9(e) hereof, may be made in cash or by certified bank check, cashier's check or
bank draft payable to the order of the Company. In the event that the Company is
obligated to issue securities of the Company other than Preferred Shares, 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.

                    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 to the registered holder of such Rights
Certificate or to his or her duly authorized assigns, subject to the provisions
of Section 14 hereof.

                    Notwithstanding anything in this Agreement to the contrary,
from and after the first occurrence of a Triggering Event, any Rights
beneficially owned by (i) an Acquiring Person or an Associate or Affiliate of an
Acquiring Person, (ii) a transferee of an Acquiring Person (or of any such
Associate or Affiliate) who becomes a transferee after the Acquiring Person
becomes such (a "POST-EVENT TRANSFEREE"), (iii) a transferee of an Acquiring
Person (or of any such Associate or Affiliate) who becomes a transferee prior to
or concurrently with the Acquiring Person becoming such and receives such Rights
pursuant to either (A) a transfer (whether or not for consideration) from the
Acquiring Person to holders of equity interests in such Acquiring Person or to
any Person with whom the Acquiring Person has any continuing agreement,
arrangement or understanding regarding the transferred Rights or (B) a transfer
which a majority of the Continuing Directors then in office 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) (a "PRE-EVENT TRANSFEREE") or (iv) any
subsequent transferee receiving transferred Rights from a Post-Event Transferee
or a Pre-Event Transferee, either directly or through one or more intermediate
transferees, shall become null and void without any further action and no holder
of such Rights shall have any rights whatsoever with respect to such Rights,
whether under any provision of this Agreement or otherwise. The Company shall
use all reasonable efforts to ensure that the provisions of this Section 7(e)
and Section 4(b) hereof are complied with, but shall have no liability to any
holder of Rights Certificates or to any other Person as a result of its failure
to make any determinations with respect to an Acquiring Person or any of such
Acquiring Person's Affiliates, Associates or transferees hereunder.




                                      -12-
<PAGE>   16
                    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, in
addition to having complied with the requirements of Section 7(a), 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.

         Section 8. Cancellation and Destruction of Rights Certificates. All
Rights Certificates surrendered for the purpose of exercise, transfer, split up,
combination or exchange shall, if surrendered to the Company or to any of its
agents, be delivered to the Rights Agent for cancellation or in canceled form,
or, if surrendered to the Rights Agent, shall be canceled by it, and no Rights
Certificates shall be issued in lieu thereof except as expressly permitted by
any 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 Rights Certificate purchased or acquired by the Company otherwise
than upon the exercise thereof. The Rights Agent shall deliver all canceled
Rights Certificates to the Company from time to time.

         Section 9. Reservation and Availability of Preferred Shares.

                    The Company covenants and agrees that it will use its best
efforts to cause to be reserved and kept available out of its authorized and
unissued Preferred Shares not reserved for another purpose (and, following the
occurrence of a Triggering Event, out of its authorized and unissued Common
Shares and/or other securities), the number of Preferred Shares (and, following
the occurrence of the Triggering Event, Common Shares and/or other securities)
that will be sufficient to permit the exercise in full of all outstanding
Rights.

                    If the Company shall hereafter list any of its Preferred
Shares on a national securities exchange, then so long as the Preferred Shares
(and, following the occurrence of a Trigger ing Event, Common Shares and/or
other securities) issuable and deliverable upon exercise of the Rights may be
listed on such exchange, the Company shall use its best efforts to cause, from
and after such time as the Rights become exercisable (but only to the extent
that it is reasonably likely that the Rights will be exercised), all shares
reserved for such issuance to be listed on such exchange upon official notice of
issuance upon such exercise.

                    The Company shall use its best efforts to (i) file, as soon
as practicable following the earliest date after the first occurrence of a
Triggering Event in which the consideration to be delivered by the Company upon
exercise of the Rights is described in Section 11(a)(ii) or Section 11(a)(iii)
hereof, or as soon as is required by law following the Distribution Date, as the
case may be, a registration statement under the Securities Act with respect to
the securities purchasable upon exercise of the Rights on an appropriate form,
(ii) cause such registration statement to become effective as soon as
practicable after such filing and (iii) cause such registration statement to
remain effective (with a prospectus at all times meeting the requirements of the
Securities Act) until the earlier of (A) the date as of which the 

                                      -13-
<PAGE>   17
Rights are no longer exercisable for such securities and (B) the date of
expiration of the Rights. The Company may temporarily suspend, for a period 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,
and notify the Rights Agent, that the exercisability of the Rights has been
temporarily suspended, as well as a public announcement and notification to the
Rights Agent at such time as the suspension is no longer in effect. 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. Notwithstanding any provision of this
Agreement to the contrary, the Rights shall not be exercisable in any
jurisdiction, unless the requisite qualification in such jurisdiction shall have
been obtained, or an exemption therefrom shall be available, and until a
registration statement has been declared effective.

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


                    The Company further covenants and agrees that it will pay
when due and payable any and all federal and state transfer taxes and charges
which may be payable in respect of the original issuance or delivery of the
Rights Certificates or of any Preferred Shares (or other securities of the
Company) 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 certificates or depositary receipts for the Preferred Shares (or
other securities of the Company) in a name other than that of, the registered
holder of the Rights Certificate evidencing Rights surrendered for exercise or
to issue or to deliver any certificates or depositary receipts for Preferred
Shares (or other securities of the Company) upon the exercise of any Rights
until any 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. Record Date. Each Person in whose name any certificate for
a number of one-thousandths of a Preferred Share (or other securities of the
Company) is issued upon the exercise of Rights shall for all purposes be deemed
to have become the holder of record of Preferred Shares (or other securities of
the Company) 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 Total Exercise Price with respect to which the
Rights have been exercised (and any applicable transfer taxes) was made;
provided, however, that if the date of such surrender and payment is a date upon
which the transfer books of the Company are closed, such Person shall be deemed
to have become the record holder of such shares on, and such certificate shall
be dated, the next succeeding Business Day on which the 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 holder
of Preferred Shares (or other securities of the Company) for which the Rights
shall be exercisable, including, without limitation, the right to vote, to
receive dividends or other distributions or to exercise any preemptive rights,
and shall not be entitled to receive any notice of any proceedings of the
Company, except as provided herein.

                                      -14-
<PAGE>   18
         Section 11. Adjustment of Exercise Price, Number of Shares or Number of
Rights. The Exercise Price, the number and kind of shares or other property
covered by each Right and the number of Rights outstanding are subject to
adjustment from time to time as provided in this Section 11.

                    1. Anything in this Agreement to the contrary
notwithstanding, in the event the Company shall at any time after the date of
this Agreement (A) declare a dividend on the Preferred Shares payable in
Preferred Shares, (B) subdivide the outstanding Preferred Shares, (C) combine
the outstanding Preferred Shares (by reverse stock split or otherwise) into a
smaller number of Preferred Shares, or (D) issue any shares of its capital stock
in a reclassification of the Preferred Shares (including any such
reclassification in connection with a consolidation or merger in which the
Company is the continuing or surviving corporation), then, in each such event,
except as otherwise provided in this Section 11 and Section 7(e) hereof: (1) the
Exercise Price in effect at the time of the record date for such dividend or of
the effective date of such subdivision, combination or reclassification shall be
adjusted so that the Exercise Price thereafter shall equal the result obtained
by dividing the Exercise Price in effect immediately prior to such time by a
fraction (the "ADJUSTMENT FRACTION"), the numerator of which shall be the total
number of Preferred Shares (or shares of capital stock issued in such
reclassification of the Preferred Shares) outstanding immediately following such
time and the denominator of which shall be the total number of Preferred Shares
outstanding immediately prior to such time; provided, however, that in no event
shall the consideration to be paid upon the exercise of one Right be less than
the aggregate par value of the shares of capital stock of the Company issuable
upon exercise of such Right; and (2) the number of one-thousandths of a
Preferred Share (or share of such other capital stock) issuable upon the
exercise of each Right shall equal the number of one-thousandths of a Preferred
Share (or share of such other capital stock) as was issuable upon exercise of a
Right immediately prior to the occurrence of the event described in clauses
(A)-(D) of this Section 11(a)(i), multiplied by the Adjustment Fraction;
provided, however, that, no such adjustment shall be made pursuant to this
Section 11(a)(i) to the extent that there shall have simultaneously occurred an
event described in clause (A), (B), (C) or (D) of Section 11(n) with a
proportionate adjustment being made thereunder. Each Common Share that shall
become outstanding after an adjustment has been made pursuant to this Section
11(a)(i) shall have associated with the number of Rights, exercisable at the
Exercise Price and for the number of one-thousandths of a Preferred Share (or
shares of such other capital stock) as one Common Share has associated with it
immediately following the adjustment made pursuant to this Section 11(a)(i).

                    2. Subject to Section 24 of this Agreement, in the event a
Triggering Event shall have occurred, then promptly following such Triggering
Event each holder of a Right, except as provided in Section 7(e) hereof, shall
thereafter have the right to receive for each Right, upon exercise thereof in
accordance with the terms of this Agreement and payment of the Exercise Price in
effect immediately prior to the occurrence of the Triggering Event, in lieu of a
number of one-thousandths of a Preferred Share, such number of Common Shares of
the Company as shall equal the result obtained by multiplying the Exercise Price
in effect immediately prior to the occurrence of the Triggering Event by the
number of one-thousandths of a Preferred Share for which a Right was exercisable
(or would have been exercisable if the Distribution Date had occurred)
immediately prior to the first occurrence of a Triggering Event, and dividing
that product by 50% of the Current Per Share Market Price for Common Shares on
the date of occurrence of the Triggering Event; provided, however, that the
Exercise Price and the number of Common Shares of the Company so receivable upon
exercise of a Right shall be subject 


                                      -15-
<PAGE>   19
to further adjustment as appropriate in accordance with Section 11(e) hereof to
reflect any events occurring in respect of the Common Shares of the Company
after the occurrence of the Triggering Event. Notwithstanding the foregoing
provisions of this Section 11(a)(ii), the right to buy Common Shares of the
Company pursuant to Section 11(a)(ii) hereof shall not arise as a result of any
Person becoming an Acquiring Person through an acquisition of Common Shares
pursuant to a Permitted Offer.

                         3. In lieu of issuing Common Shares in accordance with
Section 11(a)(ii) hereof, the Company may, if a majority of the Continuing
Directors then in office determines that such action is necessary or appropriate
and not contrary to the interest of holders of Rights and, in the event that the
number of Common Shares which are authorized by the Company's Certificate of
Incorporation but not outstanding or reserved for issuance for purposes other
than upon exercise of the Rights are not sufficient to permit the exercise in
full of the Rights, or if any necessary regulatory approval for such issuance
has not been obtained by the Company, the Company shall: (A) determine the
excess of (1) the value of the Common Shares issuable upon the exercise of a
Right (the "CURRENT VALUE") over (2) the Exercise Price (such excess, the
"SPREAD") and (B) with respect to each Right, make adequate provision to
substitute for such Common Shares, upon exercise of the Rights, (1) cash, (2) a
reduction in the Exercise Price, (3) other equity securities of the Company
(including, without limitation, shares or units of shares of any series of
preferred stock which a majority of the Continuing Directors then in office has
deemed to have the same value as Common Shares (such shares or units of shares
of preferred stock are herein called "COMMON STOCK EQUIVALENTS")), except to the
extent that the Company has not obtained any necessary stockholder or regulatory
approval for such issuance, (4) debt securities of the Company, except to the
extent that the Company has not obtained any necessary stockholder or regulatory
approval for such issuance, (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 a majority of the Continuing Directors
then in office based upon the advice of a nationally recognized investment
banking firm selected by a majority of the Continuing Directors then in office;
provided, however, if the Company shall not have made adequate provision to
deliver value pursuant to clause (B) above within thirty (30) days following the
later of (x) the first occurrence of a Triggering 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 Exercise Price, Common
Shares (to the extent available), except to the extent that the Company has not
obtained any necessary stockholder or regulatory approval for such issuance, and
then, if necessary, cash, which shares and/or cash have an aggregate value equal
to the Spread. If a majority of the Continuing Directors then in office shall
determine in good faith that it is likely that sufficient additional Common
Shares could be authorized for issuance upon exercise in full of the Rights or
that any necessary regulatory approval for such issuance will be obtained, the
thirty (30) day period set forth above may be extended to the extent necessary,
but not more than ninety (90) days after the Section 11(a)(ii) Trigger Date, in
order that the Company may seek stockholder approval for the authorization of
such additional shares or take action to obtain such regulatory approval (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, to take 


                                      -16-
<PAGE>   20
any action to obtain any required regulatory approval 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 suspen sion is no longer in effect. For purposes of this Section 11(a)(iii),
the value of the Common Shares shall be the Current Per Share Market Price of
the Common Shares 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
Shares on such date.

                    In case the Company shall, at any time after the date of
this Agreement, fix a record date for the issuance of rights, options or
warrants to all holders of Preferred Shares entitling such holders (for a period
expiring within forty-five (45) calendar days after such record date) to
subscribe for or purchase Preferred Shares or Equivalent Shares or securities
convertible into Preferred Shares or Equivalent Shares at a price per share (or
having a conversion price per share, if a security convertible into Preferred
Shares or Equivalent Shares) less than the then Current Per Share Market Price
of the Preferred Shares or Equivalent Shares on such record date, then, in each
such case, the Exercise Price to be in effect after such record date shall be
determined by multiplying the Exercise Price in effect immediately prior to such
record date by a fraction, the numerator of which shall be the number of
Preferred Shares and Equivalent Shares (if any) outstanding on such record date,
plus the number of Preferred Shares or Equivalent Shares, as the case may be,
which the aggregate offering price of the total number of Preferred Shares or
Equivalent Shares, as the case may be, to be offered or issued (and/or the
aggregate initial conversion price of the convertible securities to be offered
or issued) would purchase at such current market price, and the denominator of
which shall be the number of Preferred Shares and Equivalent Shares (if any)
outstanding on such record date, plus the number of additional Preferred Shares
or Equivalent Shares, as the case may be, to be offered for subscription or
purchase (or into which the convertible securities so to be offered are
initially convertible); provided, however, that in no event shall the
consideration to be paid upon the exercise of one Right be less than the
aggregate par value of the shares of capital stock of the Company issuable upon
exercise of one Right. In case such subscription price may be paid in a
consideration part or all of which shall be in a form other than cash, the value
of such consideration shall be as determined in good faith by a majority of the
Continuing Directors then in office, 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. Preferred Shares and Equivalent Shares owned by
or held for the account of the Company shall not be deemed outstanding for the
purpose of any such computation. Such adjustment shall be made successively
whenever such a record date is fixed, and in the event that such rights, options
or warrants are not so issued, the Exercise Price shall be adjusted to be the
Exercise Price which would then be in effect if such record date had not been
fixed.

                    In case the Company shall, at any time after the date of
this Agreement, fix a record date for the making of a distribution to all
holders of the Preferred Shares or of any class or series of Equivalent Shares
(including any such distribution made in connection with a consolidation or
merger in which the Company is the continuing or surviving corporation) of
evidences of indebted ness or assets (other than a regular quarterly cash
dividend, if any, or a dividend payable in Preferred Shares) or subscription
rights, options or warrants (excluding those referred to in Section 11(b)),
then, in each such case, the Exercise Price to be in effect after such record
date shall be determined by multiplying the 


                                      -17-
<PAGE>   21
Exercise Price in effect immediately prior to such record date by a fraction,
the numerator of which shall be the Current Per Share Market Price of a
Preferred Share or an Equivalent Share on such record date, less the fair market
value per Preferred Share or Equivalent 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) 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 Preferred Share or Equivalent Share, as the case may
be, and the denominator of which shall be such Current Per Share Market Price of
a Preferred Share or Equivalent Share on such record date; provided, however,
that in no event shall the consideration to be paid upon the exercise of one
Right be less than the aggregate par value of the shares of capital stock of the
Company issuable upon exercise of one Right. 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 Exercise Price shall be adjusted to be the
Exercise Price which would have been in effect if such record date had not been
fixed.

                    Anything herein to the contrary notwithstanding, no
adjustment in the Exercise Price shall be required unless such adjustment would
require an increase or decrease of at least 1% in the Exercise Price; provided,
however, that any adjustments which by reason of this Section 11(d) are not
required to be made shall be carried forward and taken into account in any
subsequent adjust ment. All calculations under this Section 11 shall be made to
the nearest cent or to the nearest ten- thousandth of a Common Share or other
share or one hundred-thousandth of a Preferred Share, as the case may be.
Notwithstanding the first sentence of this Section 11(d), 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 requires such adjustment or
(ii) the Expiration Date.

                    If as a result of an adjustment made pursuant to Section
11(a) or 13(a) hereof, the holder of any Right thereafter exercised shall become
entitled to receive any shares of capital stock other than Preferred Shares,
thereafter the number of such other shares so receivable upon exercise of any
Right and, if required, the Exercise 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 Shares contained in
Sections 11(a), 11(b), 11(c), 11(d), 11(g), 11(h), 11(i), 11(j), 11(k) and
11(l), and the provisions of Sections 7, 9, 10, 13 and 14 with respect to the
Preferred Shares shall apply on like terms to any such other shares.

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

                    Unless the Company shall have exercised its election as
provided in Section 11(h), upon each adjustment of the Exercise Price as a
result of the calculations made in Section 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 Exercise Price, that number of Preferred
Shares (calculated to the nearest one hundred-thousandth of a share) obtained by
(i) multiplying (x) the number of Preferred Shares covered by a Right
immediately prior to this adjustment, by (y) the Exercise Price in effect
immediately 

                                      -18-
<PAGE>   22
prior to such adjustment of the Exercise Price, and (ii) dividing the product so
obtained by the Exercise Price in effect immediately after such adjustment of
the Exercise Price.

                    The Company may elect on or after the date of any adjustment
of the Exercise Price as a result of the calculations made in Section 11(b) or
(c) to adjust the number of Rights, in substitution for any adjustment in the
number of Preferred Shares purchasable upon the exercise of a Right. Each of the
Rights outstanding after such adjustment of the number of Rights shall be
exercisable for the number of one-thousandths of a Preferred Share for which a
Right was exercisable immediately prior to such adjustment. Each Right held of
record prior to such adjustment of the number of Rights shall become that number
of Rights (calculated to the nearest one hundred-thousandth) obtained by
dividing the Exercise Price in effect immediately prior to adjustment of the
Exercise Price by the Exercise Price in effect immediately after adjustment of
the Exercise 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 Exercise 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(h), the Company shall, as promptly as practicable,
cause to be distributed to holders of record of Rights Certificates on such
record date Rights Certifi cates evidencing, subject to Section 14 hereof, the
additional Rights to which such holders shall be entitled as a result of such
adjustment, or, at the option of the Company, shall cause to be distributed to
such holders of record in substitution and replacement for the Rights
Certificates held by such holders prior to the date of adjustment, and upon
surrender thereof, if required by the Company, new Rights Certificates
evidencing all the Rights to which such holders shall be entitled after such
adjustment. Rights Certificates so to be distributed shall be issued, executed
and countersigned in the manner provided for herein (and may bear, at the option
of the Company, the adjusted Exercise 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.

                    Irrespective of any adjustment or change in the Exercise
Price or the number of Preferred Shares issuable upon the exercise of the
Rights, the Rights Certificates theretofore and thereafter issued may continue
to express the Exercise Price per one one-thousandth of a Preferred Share and
the number of one-thousandths of a Preferred Share which were expressed in the
initial Rights Certificates issued hereunder.

                    Before taking any action that would cause an adjustment
reducing the Exercise Price below the par or stated value, if any, of the number
of one-thousandths of a Preferred Share 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 as
fully paid and nonassessable shares such number of one-thousandths of a
Preferred Share at such adjusted Exercise Price.

                    In any case in which this Section 11 shall require that an
adjustment in the Exercise Price be made effective as of a record date for a
specified event, the Company may elect to defer until the occurrence of such
event the issuing to the holder of any Right exercised after such record date of


                                      -19-
<PAGE>   23
the number of one-thousandths of a Preferred Share and other capital stock or
securi ties of the Company, if any, issuable upon such exercise over and above
the number of one- thousandths of a Preferred Share and other capital stock or
securities of the Company, if any, issuable upon such exercise on the basis of
the Exercise Price in effect prior to such adjustment; provided, however, that
the Company shall deliver to such holder a due bill or other appropriate
instrument evidencing such holder's right to receive such additional shares
(fractional or otherwise) upon the occurrence of the event requiring such
adjustment.

                    Anything in this Section 11 to the contrary notwithstanding,
prior to the Distribution Date, the Company shall be entitled to make such
reductions in the Exercise Price, in addition to those adjustments expressly
required by this Section 11, as and to the extent that it in its sole discretion
shall determine to be advisable in order that any (i) consolidation or
subdivision of the Preferred or Common Shares, (ii) issuance wholly for cash of
any Preferred or Common Shares at less than the current market price, (iii)
issuance wholly for cash of Preferred or Common Shares or securities which by
their terms are convertible into or exchangeable for Preferred or Common Shares,
(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 or
Common Shares shall not be taxable to such stockholders.

                    The Company covenants and agrees that, after the
Distribution Date, it will not, except as permitted by Sections 23, 24 or 27
hereof, take (or permit to be taken) 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.

                    In the event the Company shall at any time after the date of
this Agreement (A) declare a dividend on the Common Shares payable in Common
Shares, (B) subdivide the outstanding Common Shares, (C) combine the outstanding
Common Shares (by reverse stock split or otherwise) into a smaller number of
Common Shares, or (D) issue any shares of its capital stock in a
reclassification of the Common Shares (including any such reclassification in
connection with a consolidation or merger in which the Company is the continuing
or surviving corporation), then, in each such event, except as otherwise
provided in this Section 11(a) and Section 7(e) hereof: (1) each Common Share
(or shares of capital stock issued in such reclassification of the Common
Shares) outstanding immediately following such time shall have associated with
it the number of Rights as were associated with one Common Share immediately
prior to the occurrence of the event described in clauses (A)-(D) above; (2) the
Exercise Price in effect at the time of the record date for such dividend or of
the effective date of such subdivision, combination or reclassification shall be
adjusted so that the Exercise Price thereafter shall equal the result obtained
by multiplying the Exercise Price in effect immediately prior to such time by a
fraction, the numerator of which shall be the total number of Common Shares
outstanding immediately prior to the event described in clauses (A)-(D) above,
and the denominator of which shall be the total number of Common Shares
outstanding immediately after such event; provided, however, that in no event
shall the consideration to be paid upon the exercise of one Right be less than
the aggregate par value of the shares of capital stock of the Company issuable
upon exercise of such Right; and (3) the number of one-thousandths of a
Preferred Share (or shares of such other capital stock) issuable upon the
exercise of each Right outstanding after such event shall equal the number of
one-thousandths of a Preferred Share (or shares of such other capital stock) as
were issuable with respect to one Right immediately prior to such event. Each
Common Share that shall become outstanding after an adjustment has been made
pursuant 

                                      -20-
<PAGE>   24
                    to this Section 11(n) shall have associated with it the
number of Rights, exercisable at the Exercise Price and for the number of
one-thousandths of a Preferred Share (or shares of such other capital stock) as
one Common Share has associated with it immediately following the adjustment
made pursuant to this Section 11(n). If an event occurs which would require an
adjustment under both this Section 11(n) and Section 11(a)(ii) hereof, the
adjustment provided for in this Section 11(n) shall be in addition to, and shall
be made prior to, any adjustment required pursuant to Section 11(a)(ii) hereof.

         Section 12. Certificate of Adjusted Exercise Price or Number of Shares.
Whenever an adjustment is made as provided in Sections 11 and 13 hereof, the
Company shall promptly (a) prepare a certificate setting forth such adjustment
and a brief statement of the facts accounting for such adjustment, (b) file with
the Rights Agent and with each transfer agent for the Preferred Shares a copy of
such certificate and (c) mail a brief summary thereof to each holder of a Rights
Certificate in accordance with Section 26 hereof. Notwithstanding the foregoing
sentence, the failure of the Company to make such certification or give such
notice shall not affect the validity of such adjustment or the force or effect
of the requirement for such adjustment. The Rights Agent shall be fully
protected in relying on any such certificate and on any adjustment contained
therein and shall not be deemed to have knowledge of such adjustment unless and
until it shall have received such certificate.

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

                    In the event that, following a Triggering Event, directly or
indirectly:

                    1. the Company shall consolidate with, or merge with and
into, any other Person (other than a wholly-owned Subsidiary of the Company in a
transaction the principal purpose of which is to change the state of
incorporation of the Company and which complies with Section 11(m) hereof);

                    2. any Person shall consolidate with the Company, or merge
with and into the Company and the Company shall be the continuing or surviving
corporation of such consolidation or merger and, in connection with such merger,
all or part of the Common Shares shall be changed into or exchanged for stock or
other securities of any other person (or the Company); or

                    3. the Company shall sell or otherwise transfer (or one or
more of its Subsidiaries shall sell or otherwise transfer), in one or more
transactions, assets or earning power aggregating 50% or more 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 or one or more of its wholly
owned Subsidiaries in one or more transactions, each of which individually (and
together) complies with Section 11(m) hereof),

                       then, concurrent with and in each such case,

                       a.  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 a price equal to the Total Exercise Price applicable immediately 
prior to the occurrence of the Section 13 event in accordance with the terms 

                                      -21-
<PAGE>   25
of this Agreement, such number of validly authorized and issued, fully paid,
nonassessable and freely tradeable Common Shares of the Principal Party (as
hereinafter defined), free of any liens, encumbrances, rights of first refusal
or other adverse claims, as shall be equal to the result obtained by dividing
such Total Exercise Price by 50% of the Current Per Share Market Price of the
Common Shares of such Principal Party on the date of consummation of such
Section 13 Event, provided, however, that the Exercise Price and the number of
Common Shares of such Principal Party so receivable upon exercise of a Right
shall be subject to further adjustment as appropriate in accordance with Section
11(e) hereof;

                    b. 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;

                    c. 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;

                    d. such Principal Party shall take such steps (including,
but not limited to, the reservation of a sufficient number of its Common Shares)
in connection with the consummation of any such transaction as may be necessary
to ensure that the provisions hereof shall thereafter be applicable, as nearly
as reasonably may be, in relation to its Common Shares thereafter deliverable
upon the exercise of the Rights; and

                    e. upon the subsequent occurrence of any consolidation,
merger, sale or transfer of assets or other extraordinary transaction in respect
of such Principal Party, each holder of a Right shall thereupon be entitled to
receive, upon exercise of a Right and payment of the Total Exercise Price as
provided in this Section 13(a), such cash, shares, rights, warrants and other
property which such holder would have been entitled to receive had such holder,
at the time of such transaction, owned the Common Shares of the Principal Party
receivable upon the exercise of such Right pursuant to this Section 13(a), and
such Principal Party shall take such steps (including, but not limited to,
reservation of shares of stock) as may be necessary to permit the subsequent
exercise of the Rights in accordance with the terms hereof for such cash,
shares, rights, warrants and other property.

                    f. For purposes hereof, the "earning power" of the Company
and its Subsidiaries shall be determined in good faith by the Company's Board of
Directors on the basis of the operating earnings of each business operated by
the Company and its Subsidiaries during the three fiscal years preceding the
date of such determination (or, in the case of any business not operated by the
Company or any Subsidiary during three full fiscal years preceding such date,
during the period such business was operated by the Company or any Subsidiary).



                                      -22-
<PAGE>   26
                    For purposes of this Agreement, the term "PRINCIPAL PARTY"
shall mean:

                    1. in the case of any transaction described in clause (i) or
(ii) of Section 13(a) hereof: (A) the Person that is the issuer of the
securities into which the Common Shares are converted in such merger or
consolidation, or, if there is more than one such issuer, the issuer the Common
Shares of which have the greatest aggregate market value of shares outstanding,
or (B) if no securities are so issued, (x) the Person that is the other party to
the merger, if such Person survives said merger, or, if there is more than one
such Person, the Person the Common Shares of which have the greatest aggregate
market value of shares outstanding or (y) if the Person that is the other party
to the merger does not survive the merger, the Person that does survive the
merger (including the Company if it survives) or (z) the Person resulting from
the consolidation; and

                    2. in the case of any transaction described in clause (iii)
of Section 13(a) hereof, the Person that is the party receiving the greatest
portion of the assets or earning power transferred pursuant to such transaction
or transactions, or, if more than one Person that is a party to such transaction
or transactions receives the same portion of the assets or earning power so
transferred and each such portion would, were it not for the other equal
portions, constitute the greatest portion of the assets or earning power so
transferred, or if the Person receiving the greatest portion of the assets or
earning power cannot be determined, whichever of such Persons is the issuer of
Common Shares having the greatest aggregate market value of shares outstanding;

provided, however, that in any such case described in the foregoing clause
(b)(i) or (b)(ii), if the Common Shares of such Person are not at such time or
have not been continuously over the preceding 12-month period registered under
Section 12 of the Exchange Act, then (1) if such Person is a direct or indirect
Subsidiary of another Person the Common Shares of which are and have been so
registered, the term "Principal Party" shall refer to such other Person, or (2)
if such Person is a Subsidiary, directly or indirectly, of more than one Person,
the Common Shares of which are and have been so registered, the term "Principal
Party" shall refer to whichever of such Persons is the issuer of Common Shares
having the greatest aggregate market value of shares outstanding, or (3) if such
Person is owned, directly or indirectly, by a joint venture formed by two or
more Persons that are not owned, directly or indirectly by the same Person, the
rules set forth in clauses (1) and (2) above shall apply to each of the owners
having an interest in the venture as if the Person owned by the joint venture
was a Subsidiary of both or all of such joint venturers, and the Principal Party
in each such case shall bear the obligations set forth in this Section ? in the
same ration as its interest in such Person bears to the total of such interests.

                    The Company shall not consummate any Section 13 Event unless
the Principal Party shall have a sufficient number of authorized Common Shares
that have not been issued or reserved for issuance to permit the exercise in
full of the Rights in accordance with this Section ? and unless prior thereto
the Company and such issuer shall have executed and delivered to the Rights
Agent a supplemental agreement confirming that such Principal Party shall, upon
consummation of such Section ? Event, assume this Agreement in accordance with
Sections 13(a) and 13(b) hereof, that all rights of first refusal or preemptive
rights in respect of the issuance of Common Shares of such Principal Party upon
exercise of outstanding Rights have been waived, that there are no rights,
warrants, instruments or securities outstanding or any agreements or
arrangements which, as a result of the consummation of such 



                                      -23-
<PAGE>   27
transaction, would eliminate or substantially diminish the benefits intended to
be afforded by the Rights and that such transaction shall not result in a
default by such Principal Party under this Agreement, and further providing
that, as soon as practicable after the date of such Section ? Event, such
Principal Party will:

                    1. 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, use its best efforts to cause
such registration statement to become effective as soon as practicable after
such filing and use its best efforts to cause such registration statement to
remain effective (with a prospectus at all times meeting the requirements of the
Securities Act) until the Expiration Date, and similarly comply with applicable
state securities laws;

                    2. use its best efforts to list (or continue the listing of)
the Rights and the securities purchasable upon exercise of the Rights on a
national securities exchange or to meet the eligibility requirements for
quotation on Nasdaq and list (or continue the listing of) the Rights and the
securities purchasable upon exercise of the Rights on Nasdaq; and

                    3. deliver to holders of the Rights historical financial
statements for such Principal Party which comply in all respects with the
requirements for registration on Form 10 (or any successor form) under the
Exchange Act.

         In the event that at any time after the occurrence of a Triggering
Event some or all of the Rights shall not have been exercised at the time of a
transaction described in this Section 13, the Rights which have not theretofore
been exercised shall thereafter be exercisable in the manner described in
Section 13(a) (without taking into account any prior adjustment required by
Section 11(a)(ii)).

                    In case the "Principal Party" for purposes of Section 13(b)
hereof has provision in any of its authorized securities or in its certificate
of incorporation or by-laws or other instrument governing its corporate affairs,
which provision would have the effect of (i) causing such Principal Party to
issue (other than to holders of Rights pursuant to Section 13 hereof), in
connection with, or as a consequence of, the consummation of a Section 13 Event,
Common Shares or Equivalent Shares of such Principal Party at less than the then
Current Per Share Market Price thereof or securities exercisable for, or
convertible into, Common Shares or Equivalent Shares of such Principal Party at
less than such then Current Per Share Market Price, or (ii) providing for any
special payment, tax or similar provision in connection with the issuance of the
Common Shares of such Principal Party pursuant to the provisions of Section 13
hereof, then, in such event, the Company hereby agrees with each holder of
Rights that it shall not consummate any such transaction unless prior thereto
the Company and such Principal Party shall have executed and delivered to the
Rights Agent a supplemental agreement providing that the provision in question
of such Principal Party shall have been canceled, waived or amended, or that the
authorized securities shall be redeemed, so that the applicable provision will
have no effect in connection with or as a consequence of, the consummation of
the proposed transaction.

                    The Company covenants and agrees that it shall not, at any
time after the Distribution Date, effect or permit to occur any Section 13
Event, if (i) at the time or immediately after 

                                      -24-
<PAGE>   28
such Section 13 Event 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, (ii) prior to, simultaneously with or immediately after such Section 13
Event, the stockholders of the Person who constitutes, or would constitute, the
"Principal Party" for purposes of Section 13(b) hereof shall have received a
distribution of Rights previously owned by such Person or any of its Affiliates
or Associates or (iii) the form or nature of organization of the Principal Party
would preclude or limit the exercisability of the Rights.

                    Notwithstanding anything in this Agreement to the contrary,
Section 13 shall not be applicable to a transaction described in clauses (i) and
(ii) of Section 13(a) if: (i) such transaction is consummated with a Person or
Persons who acquired Common Shares pursuant to a Permitted Offer (or a
wholly-owned Subsidiary of any such Person or Persons); (ii) the price per share
of Common Shares offered in such transaction is not less than the price per
share of Common Shares paid to all holders of Common Shares whose shares were
purchased pursuant to such Permitted Offer; and (iii) the form of consideration
being offered to the remaining holders of Common Shares pursuant to such
transaction is the same form as the form of consideration paid pursuant to such
Permitted Offer. Upon consummation of any such transaction contemplated by this
Section 13(f), all Rights hereunder shall expire.

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

        Section 14. Fractional Rights and Fractional Shares.

                    The Company shall not be required to issue fractions of
Rights or to distribute Rights Certificates which evidence fractional Rights. In
lieu of such fractional Rights, there shall be paid to the registered holders of
the Rights Certificates with regard to which such fractional Rights would
otherwise be issuable, an amount in cash equal to the same fraction of the
current market value of a whole Right. For the purposes of this Section 14(a),
the current market value of a whole Right shall be the closing price of the
Rights for the Trading Day immediately prior to the date on which such
fractional Rights would have been otherwise issuable, as determined pursuant to
the second sentence of Section 1(k) hereof.

                    The Company shall not be required to issue fractions of
Preferred Shares (other than fractions that are integral multiples of one
one-thousandth of a Preferred Share) upon exercise of the Rights or to
distribute certificates which evidence fractional Preferred Shares (other than
fractions that are integral multiples of one one-thousandth of a Preferred
Share). Interests in fractions of Preferred Shares in integral multiples of one
one-thousandth of a Preferred Share may, at the election of the Company, be
evidenced by depositary receipts, pursuant to an appropriate agreement between
the Company and a depositary selected by it; provided, that such agreement shall
provide that the holders of such depositary receipts shall have all the rights,
privileges and preferences to which they are entitled as beneficial owners of
the Preferred Shares represented by such depositary receipts. In lieu of
fractional Preferred Shares that are not integral multiples of one
one-thousandth of a Preferred Share, the Company shall 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 a Preferred Share.
                                   
                                      -25-
<PAGE>   29
For purposes of this Section 14(b), the current market value of a Preferred
Share shall be one thousand times the closing price of a Common Share (as
determined pursuant to the second sentence of Section 1(k) hereof) for the
Trading Day immediately prior to the date of such exercise.

                    The Company shall not be required to issue fractions of
Common Shares or to distribute certificates which evidence fractional Common
Shares upon the exercise or exchange of Rights. In lieu of such fractional
Common Shares, the Company shall 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 a Common
Share. For purposes of this Section 14(c), the current market value of a Common
Share shall be the closing price of a Common Share (as determined pursuant to
the second sentence of Section 1(k) hereof) for the Trading Day immediately
prior to the date of such exercise.

                    The holder of a Right by the acceptance of the Right
expressly waives his or her right to receive any fractional Rights or any
fractional shares (other than fractions that are integral multiples of one
one-thousandth of a Preferred Share) upon exercise of a Right.

        Section 15. Rights of Action. All rights of action in respect of this
Agreement, excepting the rights of action given to the Rights Agent under
Section 18 hereof, are vested in the respective registered holders of the Rights
Certificates (and, prior to the Distribution Date, the registered holders of the
Common Shares); and any registered holder of any Rights Certificate (or, prior
to the Distribution Date, of the Common Shares), without the consent of the
Rights Agent or of the holder of any other Rights Certificate (or, prior to the
Distribution Date, of the Common Shares), may, in his or her own behalf and for
his or her 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 or her right to exercise the Rights evidenced by such Rights Certificate in
the manner provided in such Rights Certificate and in this Agreement. Without
limiting the foregoing or any remedies available to the holders of Rights, it is
specifically acknowledged that the holders of Rights would not have an adequate
remedy at law for any breach of this Agreement and will be entitled to specific
performance of the obligations under, and injunctive relief against actual or
threatened violations of, the obligations 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:

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

                    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; and

                    subject to Sections 6(a) and 7(f) hereof, the Company and
the Rights Agent may deem and treat the person in whose name the Rights
Certificate (or, prior to the Distribution Date, the 


                                      -26-
<PAGE>   30
associated Common Shares certificate) is registered as the absolute owner
thereof and of the Rights evidenced thereby (notwithstanding any notations of
ownership or writing on the Rights Certificates or the associated Common Shares
certificate made by anyone other than the Company or the Rights Agent) for all
purposes whatsoever, and neither the Company nor the Rights Agent shall be
affected by any notice to the contrary.

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

        Section 18. Concerning the Rights Agent.

                    The Company agrees to pay to the Rights Agent reasonable
compensation for all services rendered by it hereunder and, from time to time,
on demand of the Rights Agent, its reasonable expenses and counsel fees and
other disbursements incurred in the administration and execution of this
Agreement and the exercise and performance of its duties hereunder. The Company
also agrees to indemnify the Rights Agent for, and to hold it harmless against,
any loss, liability or expense, incurred without negligence, bad faith or
willful misconduct on the part of the Rights Agent, for anything done or omitted
by the Rights Agent in connection with the acceptance and administration of this
Agreement, including the costs and expenses of defending against any claim of
liability in the premises. In no event will the Rights Agent be liable for
special, indirect, incidental or consequential loss or damage of any kind
whatsoever, even if the Rights Agent has been advised of the possibility of such
loss or damage.

                    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 the Preferred Shares or Common Shares or
for other securities of the Company, instrument of assignment or transfer, power
of attorney, endorsement, affidavit, letter, notice, direction, consent,
certificate, statement or other paper or document reasonably believed by it to
be genuine and to be signed, executed and, where necessary, verified or
acknowledged, by the proper Person or Persons, or otherwise upon the advice of
counsel as set forth in Section 20 hereof.



                                      -27-
<PAGE>   31
        Section 19. Merger or Consolidation or Change of Name of Rights Agent.

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

                    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:

                    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.

                    Whenever in the performance of its duties under this
Agreement the Rights Agent shall deem it necessary or desirable that any fact or
matter (including, without limitation, the identity of any Acquiring Person and
the determination of Current Per Share 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 any one of the Chairman of the Board, the Chief Executive
Officer, the President, any Vice President, the Chief Financial Officer, the
Secretary or any Assistant Secretary of the Company and delivered to the Rights
Agent; and such certificate shall be full authorization to the Rights Agent for
any action taken or suffered in good faith by it under the provisions of this
Agreement in reliance upon such certificate.



                                      -28
<PAGE>   32
                    The Rights Agent shall be liable hereunder to the Company
and any other Person only for its own negligence, bad faith or willful
misconduct.

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

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

                    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, instru ments 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.

                    The Rights Agent is hereby authorized and directed to accept
instructions with respect to the performance of its duties hereunder from any
one of the Chairman of the Board, the Chief Executive Officer, the President,
any Vice President, the Chief Financial Officer, the Secretary or any Assistant
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 by it in good faith in accordance with instructions of
any such officer or for any delay in acting while waiting for those
instructions. Any application by the Rights Agent for written instructions from
the Company may, at the option of the Rights Agent, set forth in writing any
action proposed to be taken or omitted by the Rights Agent under this Rights
Agreement and the date on and/or after which such action shall be taken or such
omission shall be effective. The Rights Agent shall not be liable for any action
taken by, or omission of, the Rights Agent in accordance with a proposal
included in any such application on or after the date specified in such
application (which date shall not be less than five (5) Business Days after the
date any officer of the Company actually receives such application, unless any
such officer shall have consented in writing to an earlier date) unless, prior
to taking any such action (or the effective date in the case of an omission),
the Rights Agent shall have received written instructions in response to such
application specifying the action to be taken or omitted.



                                      -29-
<PAGE>   33
                    The Rights Agent and any stockholder, director, officer or
employee of the Rights Agent may buy, sell or deal in any of the Rights or other
securities of the Company or become pecuniarily interested in any transaction in
which the Company may be interested, or contract with or lend money to the
Company or otherwise act as fully and freely as though it were not Rights Agent
under this Agreement. Nothing herein shall preclude the Rights Agent from acting
in any other capacity for the Company or for any other legal entity.

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

                    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.

                    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 thirty (30) days' notice in writing mailed to the Company and to each
transfer agent of the Preferred Shares and the Common Shares by registered or
certified mail, and to the holders of the Rights Certificates by first-class
mail. The Company may remove the Rights Agent or any successor Rights Agent upon
thirty (30) days' notice in writing, mailed to the Rights Agent or successor
Rights Agent, as the case may be, and to each transfer agent of the Preferred
Shares and the Common Shares by registered or certified mail, and to the holders
of the Rights Certificates by first-class mail. If the Rights Agent shall resign
or be removed or shall otherwise become incapable of acting, the Company shall
appoint a successor to the Rights Agent. If the Company shall fail to make such
appointment within a period of thirty (30) days after giving notice of such
removal or after it has been notified in writing of such resignation or
incapacity by the resigning or incapacitated Rights Agent or by the holder of a
Rights Certificate (who shall, with such notice, submit his or her Rights
Certificate for inspection by the Company), then the registered holder of any
Rights Certificate may apply to any court of competent jurisdiction for the
appointment of a new Rights Agent. Any successor Rights Agent, whether appointed
by the Company or by such a court, shall be a corporation organized and doing
business under the laws of the United States or of any state of the United
States, in good standing, which is authorized under such laws to exercise
corporate trust or stockholder services powers and is subject to supervision or
examination by federal or state authority and which has at the time of its
appointment as Rights Agent a combined capital and surplus of at least $100
million. After appointment, the successor Rights Agent shall be vested with the
same powers, rights, duties and 

                                      -30-
<PAGE>   34
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 Preferred Shares and the Common Shares, 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 Exercise Price and the number or kind or class of shares or other
securities or property purchasable under the Rights Certificates made in
accordance with the provisions of this Agreement. In addition, in connection
with the issuance or sale of Common Shares following the Distribution Date and
prior to the redemption or expiration of the Rights, the Company (a) shall, with
respect to Common Shares so issued or sold pursuant to the exercise of stock
options or under any employee plan or arrangement or upon the exercise,
conversion or exchange of other securities of the Company outstanding at the
date hereof 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 and this sentence shall be null and void ab initio if, and to
the extent that, such issuance or this sentence would create a significant risk
of or result in material adverse tax consequences to the Company or the Person
to whom such Rights Certificate would be issued or would create a significant
risk of or result in such options' or employee plans' or arrangements' failing
to qualify for otherwise available special tax treatment and (ii) no such Rights
Certificate shall be issued if, and to the extent that, appropriate adjustment
shall otherwise have been made in lieu of the issuance thereof.


        Section 23. Redemption.

                    The Company may, at its option and with the approval of the
Board of Directors, at any time prior to the Close of Business on the earlier of
(i) the tenth day following the Shares Acquisition Date (or such later date as
may be determined by action of a majority of Continuing Directors then in office
and publicly announced by the Company) and (ii) the Final Expiration Date,
redeem all but not less than all the then outstanding Rights at a redemption
price of $0.01 per Right, appropriately adjusted to reflect any stock split,
stock dividend or similar transaction occurring after the date hereof (such
redemption price being herein referred to as the "REDEMPTION PRICE") and the
Company may, at its option, pay the Redemption Price either in Common Shares
(based on the Current Per Share Market Price thereof at the time of redemption)
or cash. Such redemption of the Rights by the Company may be made effective at
such time, on such basis and with such conditions as the Board of Directors in
its sole discretion may establish; provided, however, if the Board of Directors
of the Company authorizes redemption of the Rights on or after the time a Person
becomes an Acquiring Person, then there must be 

                                      -31-
<PAGE>   35
Continuing Directors then in office and such authorization shall require the
concurrence of a majority of such Continuing Directors. The date on which the
Board of Directors elects to make the redemption effective shall be referred to
as the "REDEMPTION DATE."

                    Immediately upon the action of the Board of Directors of the
Company ordering the redemption of the Rights, evidence of which shall have been
filed with the Rights Agent, and without any further action and without any
notice, the right to exercise the Rights will terminate and the only right
thereafter of the holders of Rights shall be to receive the Redemption Price.
The Company shall promptly give public notice of any such redemption; provided,
however, that the failure to give or any defect in, any such notice shall not
affect the validity of such redemption. Within ten (10) days after the action of
the Board of Directors ordering the redemption of the Rights, the Company shall
give notice of such redemption to the Rights Agent and the holders of the then
outstanding Rights by mailing such notice to all such holders at their last
addresses as they appear upon the registry books of the Rights Agent or, prior
to the Distribution Date, on the registry books of the transfer agent for the
Common Shares. Any notice which is mailed in the manner herein provided shall be
deemed given, whether or not the holder receives the notice. Each such notice of
redemption will state the method by which the payment of the Redemption Price
will be made. Neither the Company nor any of its Affiliates or Associates may
redeem, acquire or purchase for value any Rights at any time in any manner other
than that specifically set forth in this Section 23 or in Section 24 hereof, and
other than in connection with the purchase of Common Shares prior to the
Distribution Date.

        Section 24. Exchange.

                    Subject to applicable laws, rules and regulations, and
subject to subsection 24(c) below, the Company may, at its option, by majority
vote of the Board of Directors and a majority vote of the Continuing Directors,
at any time after the occurrence of a Triggering 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 Common
Shares at an exchange ratio of one Common Share per Right, appropriately
adjusted to reflect any stock split, stock dividend or similar transaction
occurring after the date hereof (such exchange ratio being hereinafter referred
to as the "EXCHANGE RATIO"). Notwithstanding the foregoing, the Board of
Directors shall not be empowered to effect such exchange at any time after any
Person (other than the Company, any Subsidiary of the Company, any employee
benefit plan of the Company or any such Subsidiary, or any entity holding Common
Shares for or pursuant to the terms of any such plan), together with all
Affiliates and Associates of such Person, becomes the Beneficial Owner of 50% or
more of the Common Shares then outstanding.

                    Immediately upon the action of the Board of Directors
ordering the exchange of any Rights pursuant to subsection 24(a) of this Section
24 and without any further action and without any notice, the right to exercise
such Rights shall terminate and the only right thereafter of a holder of such
Rights shall be to receive that number of Common Shares equal to the number of
such Rights held by such holder multiplied by the Exchange Ratio. The Company
shall give public notice of any such exchange; provided, however, that the
failure to give, or any defect in, such notice shall not affect the validity of
such exchange. The Company shall 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 

                                      -32-
<PAGE>   36
notice which is mailed in the manner herein provided shall be deemed given,
whether or not the holder receives the notice. Each such notice of exchange will
state the method by which the exchange of the Common Shares for Rights will be
effected and, in the event of any partial exchange, the number of Rights which
will be exchanged. Any partial exchange shall be effected pro rata based on the
number of Rights (other than Rights which have become void pursuant to the
provisions of Section 7(e) hereof) held by each holder of Rights.

                    In the event that there shall not be sufficient Common
Shares issued but not outstanding or authorized but unissued to permit any
exchange of Rights as contemplated in accor dance with Section 24(a), the
Company shall either take such action as may be necessary to authorize
additional Common Shares for issuance upon exchange of the Rights or
alternatively, at the option of a majority of the Board of Directors, with
respect to each Right (i) pay cash in an amount equal to the Current Value (as
hereinafter defined), in lieu of issuing Common Shares in exchange therefor, or
(ii) issue debt or equity securities or a combination thereof, having a value
equal to the Current Value, in lieu of issuing Common Shares in exchange for
each such Right, where the value of such securities shall be determined by a
nationally recognized investment banking firm selected by majority vote of the
Board of Directors, or (iii) deliver any combination of cash, property, Common
Shares and/or other securities having a value equal to the Current Value in
exchange for each Right. For purposes of this Section 24(c) only, the Current
Value shall mean the product of the Current Per Share Market Price of Common
Shares on the date of the occurrence of the event described above in
subparagraph (a), multiplied by the number of Common Shares for which the Right
otherwise would be exchange able if there were sufficient shares available. To
the extent that the Company determines that some action need be taken pursuant
to clauses (i), (ii) or (iii) of this Section 24(c), the Board of Directors may
temporarily suspend the exercisability of the Rights for a period of up to sixty
(60) days following the date on which the event described in Section 24(a) shall
have occurred, in order to seek any authorization of additional Common Shares
and/or to decide the appropriate form of distribution to be made pursuant to the
above provision and to determine the value thereof. In the event of any
such suspension, the Company shall issue a public announcement stating that the
exercisability of the Rights has been temporarily suspended.

                    The Company shall not be required to issue fractions of
Common Shares or to distribute certificates which evidence fractional Common
Shares. In lieu of such fractional Common Shares, there shall be paid to the
registered holders of the Rights Certificates with regard to which such
fractional Common Shares would otherwise be issuable, an amount in cash equal to
the same fraction of the current market value of a whole Common Share (as
determined pursuant to the second sentence of Section 1(k) hereof).

                    The Company may, at its option, by majority vote of the
Board of Directors, at any time before any Person has become an Acquiring
Person, exchange all or part of the then outstanding Rights for rights of
substantially equivalent value, as determined reasonably and with good faith by
the Board of Directors, based upon the advice of one or more nationally
recognized investment banking firms.

                    Immediately upon the action of the Board of Directors
ordering the exchange of any Rights pursuant to subsection 24(e) of this Section
24 and without any further action and without 

                                      -33-
<PAGE>   37
any notice, the right to exercise such Rights shall terminate and the only right
thereafter of a holder of such Rights shall be to receive that number of rights
in exchange therefor as has been deter mined by the Board of Directors in
accordance with subsection 24(e) above. The Company shall give public notice of
any such exchange; provided, however, that the failure to give, or any defect
in, such notice shall not affect the validity of such exchange. The Company
shall 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 transfer
agent for the Common Shares of the Company. Any notice which is mailed in the
manner herein provided shall be deemed given, whether or not the holder receives
the notice. Each such notice of exchange will state the method by which the
exchange of the Rights will be effected.

        Section 25. Notice of Certain Events.

                    In case the Company shall propose to effect or permit to
occur any Triggering Event or Section ? Event, the Company shall give notice
thereof to each holder of Rights in accordance with Section 26 hereof at least
twenty (20) days prior to occurrence of such Triggering Event or such Section ?
Event.

                    In case any Triggering Event or Section ? Event shall occur,
then, in any such case, the Company shall as soon as practicable thereafter give
to each holder of a Rights Certificate, 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 Sections 11(a)(ii) and ?
hereof.

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

                                    ArthroCare Corporation
                                    595 North Pastoria Avenue
                                    Sunnyvale, CA  94086
                                    Attention:  Chief Executive Officer

                                    with a copy to:

                                    Wilson Sonsini Goodrich & Rosati
                                    Professional Corporation
                                    650 Page Mill Road
                                    Palo Alto, California 94304-1050
                                    Attention:  J. Casey McGlynn

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



                                      -34-

<PAGE>   38

<PAGE>   39
                                    Norwest Bank Minnesota, N.A.
                                    161 North Concord Exchange
                                    South St. Paul, MN 55075-0738
                                    Attention: Barb Novak

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 shall be
sufficiently given or made if sent by first-class mail, postage prepaid,
addressed to such holder at the address of such holder as shown on the registry
books of the Company.

                    Section 27. Supplements and Amendments. Prior to the
occurrence of a Distribution Date, the Company may supplement or amend this
Agreement in any respect without the approval of any holders of Rights and the
Rights Agent shall, if the Company so directs, execute such supplement or
amendment. From and after the occurrence of a Distribution Date, the Company and
the Rights Agent may from time to time supplement or amend this Agreement
without the approval of any holders of Rights in order to (i) cure any
ambiguity, (ii) correct or supplement any provision contained herein which may
be defective or inconsistent with any other provisions herein, (iii) shorten or
lengthen any time period hereunder (which shortening or lengthening shall be
effective only if there are Continuing Directors and shall require the
concurrence of a majority of such Continuing Directors) or (iv) to change or
supplement the provisions hereunder in any manner that the Company may deem
necessary or desirable and that shall not adversely affect the interests of the
holders of Rights (other than an Acquiring Person or an Affiliate or Associate
of an Acquiring Person); provided, this Agreement may not be supplemented or
amended to lengthen, pursuant to clause (iii) of this sentence, (A) a time
period relating to when the Rights may be redeemed at such time as the Rights
are not then redeemable or (B) any other time period unless such lengthening is
for the purpose of protecting, enhancing or clarifying the rights of, and/or the
benefits to, the holders of Rights (other than an Acquiring Person or an
Affiliate or Associate of an Acquiring Person). Upon the delivery of a
certificate from an appropriate officer of the Company that states that the
proposed supplement or amendment is in compliance with the terms of this Section
?, the Rights Agent shall execute such supplement or amendment. Prior to the
Distribution Date, the interests of the holders of Rights shall be deemed
coincident with the interests of the holders of Common Shares.

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

         Section 29. Determinations and Actions by the Board of Directors, etc.
For all purposes of this Agreement, any calculation of the number of Common
Shares outstanding at any particular time, including for purposes of determining
the particular percentage of such outstanding Common Shares of which any Person
is the Beneficial Owner, shall be made in accordance with the last sentence of
Rule 13d-3(d)(1)(i) of the General Rules and Regulations under the Exchange Act.
The Board of Directors of the Company (or, where specifically provided for
herein, 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, or the Company (or, where specifically provided for
herein, the Continuing Directors), or as may be necessary or advisable in the
administration of this Agreement, 

                                      -35-
<PAGE>   40
including, without limitation, the right and power to (i) interpret the
provisions of this Agreement and (ii) make all determinations deemed necessary
or advisable for the administration of this Agreement (including a determination
to redeem or not redeem the Rights or to amend the Agreement). All such actions,
calculations, interpretations and determinations (including, for purposes of
clause (y) below, all omissions with respect to the foregoing) which are done or
made by the Board (or, where specifically provided for herein, by the Continuing
Directors) in good faith, shall (x) be final, conclusive and binding on the
Company, the Rights Agent, the holders of the Rights Certificates 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, the Common Shares) 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, the Common
Shares).

         Section 31. Severability. If any term, provision, covenant or
restriction of this Agreement is held by a court of competent jurisdiction or
other authority to be invalid, void or unenforceable, the remainder of the
terms, provisions, covenants and restrictions of this Agreement shall remain in
full force and effect and shall in no way be affected, impaired or invalidated;
provided, however, that notwithstanding anything in this Agreement to the
contrary, if any such term, provision, covenant or restriction is held by such
court or authority to be invalid, void or unenforceable and the Board of
Directors of the Company determines in its good faith judgment that severing the
invalid language from this Agreement would adversely affect the purpose or
effect of this Agreement, the right of redemption set forth in Section 23 hereof
shall be reinstated and shall not expire until the Close of Business on the
tenth day following the date of such determination by the Board of Directors.

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

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

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



                                      -36-
<PAGE>   41
         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed as of the day and year first above written.

"COMPANY"                            ARTHROCARE CORPORATION


                                     By: /s/ HIRA V. THAPLIYAL
                                        ________________________________________

                                     Name: Hira V. Thapliyal
                                          ______________________________________

                                     Title: Chief Executive Officer
                                           _____________________________________



"RIGHTS AGENT"                       NORWEST BANK MINNESOTA, N.A.


                                     By: /s/ BARBARA M. NOVAK
                                        ________________________________________

                                     Name: Barbara M. Novak
                                          ______________________________________

                                     Title: Assistant Vice President
                                           _____________________________________
                                           


                                      -37-
<PAGE>   42
                                    EXHIBIT A

               CERTIFICATE OF DESIGNATIONS OF RIGHTS, PREFERENCES
                                AND PRIVILEGES OF
                     SERIES A PARTICIPATING PREFERRED STOCK
                            OF ARTHROCARE CORPORATION


         The undersigned, J. Casey McGlynn does hereby certify:

         1. That he is the duly elected and acting Secretary of ArthroCare
Corporation, a Delaware corporation (the "CORPORATION").

         2. That pursuant to the authority conferred upon the Board of Directors
by the Certificate of Incorporation of the said Corporation, the said Board of
Directors on November 14, 1996 adopted the following resolution creating a
series of 20,000 shares of Preferred Stock designated as Series A Participating
Preferred Stock:

         "RESOLVED, that pursuant to the authority vested in the Board of
Directors of the corporation by the Restated Certificate of Incorporation, the
Board of Directors does hereby provide for the issue of a series of Preferred
Stock of the Corporation and does hereby fix and herein state and express the
designations, powers, preferences and relative and other special rights and the
qualifications, limitations and restrictions of such series of Preferred Stock
as follows:

         Section 1. Designation and Amount. The shares of such series shall be
designated as "SERIES A PARTICIPATING PREFERRED STOCK." The Series A
Participating Preferred Stock shall have a par value of $0.001 per share, and
the number of shares constituting such series shall be 20,000.

         Section 2. Proportional Adjustment. In the event the Corporation shall
at any time after the issuance of any share or shares of Series A Participating
Preferred Stock (i) declare any dividend on Common Stock of the Corporation
("COMMON STOCK") payable in shares of Common Stock, (ii) subdivide the
outstanding Common Stock or (iii) combine the outstanding Common Stock into a
smaller number of shares, then in each such case the Corporation shall
simultaneously effect a proportional adjustment to the number of outstanding
shares of Series A Participating Preferred Stock.

         Section 3. Dividends and Distributions.

                    Subject to the prior and superior right of the holders of
any shares of any series of Preferred Stock ranking prior and superior to the
shares of Series A Participating Preferred Stock with respect to dividends, the
holders of shares of Series A Participating Preferred Stock shall be entitled to
receive when, as and if declared by the Board of Directors out of funds legally
available for the purpose, quarterly dividends payable in cash on the last day
of January, April, July and October in each year (each such date being referred
to herein as a "QUARTERLY DIVIDEND PAYMENT DATE"), commencing on the first
Quarterly Dividend Payment Date after the first issuance of a share or fraction
of a share of Series A 
<PAGE>   43
Participating Preferred Stock, in an amount per share (rounded to the nearest
cent) equal to 1,000 times the aggregate per share amount of all cash dividends,
and 1,000 times the aggregate per share amount (payable in kind) of all non-cash
dividends or other distributions other than a dividend payable in shares of
Common Stock or a subdivision of the outstanding shares of Common Stock (by
reclassification or otherwise), declared on the Common Stock since the
immediately preceding Quarterly Dividend Payment Date, or, with respect to the
first Quarterly Dividend Payment Date, since the first issuance of any share or
fraction of a share of Series A Participating Preferred Stock.

                    The Corporation shall declare a dividend or distribution on
the Series A Participating Preferred Stock as provided in paragraph (a) above
immediately after it declares a dividend or distribution on the Common Stock
(other than a dividend payable in shares of Common Stock).

                    Dividends shall begin to accrue on outstanding shares of
Series A Participating Preferred Stock from the Quarterly Dividend Payment Date
next preceding the date of issue of such shares of Series A Participating
Preferred Stock, unless the date of issue of such shares is prior to the record
date for the first Quarterly Dividend Payment Date, in which case dividends on
such shares shall begin to accrue from the date of issue of such shares, or
unless the date of issue is a Quarterly Dividend Payment Date or is a date after
the record date for the determination of holders of shares of Series A
Participating Preferred Stock entitled to receive a quarterly dividend and
before such Quarterly Dividend Payment Date, in either of which events such
dividends shall begin to accrue from such Quarterly Dividend Payment Date.
Accrued but unpaid dividends shall not bear interest. Dividends paid on the
shares of Series A Participating Preferred Stock in an amount less than the
total amount of such dividends at the time accrued and payable on such shares
shall be allocated pro rata on a share-by-share basis among all such shares at
the time outstanding. The Board of Directors may fix a record date for the
determination of holders of shares of Series A Participating Preferred Stock
entitled to receive payment of a dividend or distribution declared thereon,
which record date shall be no more than 30 days prior to the date fixed for the
payment thereof.

         Section 4. Voting Rights.  The holders of shares of Series A 
Participating Preferred Stock shall have the following voting rights:

                    Each share of Series A Participating Preferred Stock shall
entitle the holder thereof to 1,000 votes on all matters submitted to a vote of
the stockholders of the Corporation.

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

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


                                       -2-
<PAGE>   44
         Section 5. Certain Restrictions.

                    The Corporation shall not declare any dividend on, make any
distribution on, or redeem or purchase or otherwise acquire for consideration
any shares of Common Stock after the first issuance of a share or fraction of a
share of Series A Participating Preferred Stock unless concurrently therewith it
shall declare a dividend on the Series A Participating Preferred Stock as
required by Section 3 hereof.

                    Whenever quarterly dividends or other dividends or
distributions payable on the Series A Participating Preferred Stock as provided
in Section 3 are in arrears, thereafter and until all accrued and unpaid
dividends and distributions, whether or not declared, on shares of Series A
Participating Preferred Stock outstanding shall have been paid in full, the
Corporation shall not

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

                    2. declare or pay dividends on, 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 Series A Participating Preferred
Stock, except dividends paid ratably on the Series A Participating 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;

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

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

                    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 5, purchase or otherwise acquire such shares at such time and in
such manner.



                                       -3-
<PAGE>   45
         Section 6. Reacquired Shares. Any shares of Series A Participating
Preferred Stock purchased or otherwise acquired by the Corporation in any manner
whatsoever shall be retired and canceled promptly after the acquisition thereof.
All such shares shall upon their cancellation become authorized but unissued
shares of Preferred Stock and may be reissued as part of a new series of
Preferred Stock to be created by resolution or resolutions of the Board of
Directors, subject to the conditions and restrictions on issuance set forth
herein and, in the Restated Certificate of Incorporation, as then amended.

         Section 7. Liquidation, Dissolution or Winding Up. Upon any
liquidation, dissolution or winding up of the Corporation, the holders of shares
of Series A Participating Preferred Stock shall be entitled to receive an
aggregate amount per share equal to 1000 times the aggregate amount to be
distributed per share to holders of shares of Common Stock plus an amount equal
to any accrued and unpaid dividends on such shares of Series A Participating
Preferred Stock.

         Section 8. Consolidation, Merger, etc. In case the Corporation shall
enter into any consolidation, merger, combination or other transaction in which
the shares of Common Stock are exchanged for or changed into other stock or
securities, cash and/or any other property, then in any such case the shares of
Series A Participating Preferred Stock shall at the same time be similarly
exchanged or changed in an amount per share equal to 1,000 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.

         Section 9. No Redemption. The shares of Series A Participating 
Preferred Stock shall not be redeemable.

         Section 10. Ranking. The Series A Participating Preferred Stock shall
rank junior to all other series of the Corporation's Preferred Stock as to the
payment of dividends and the distribution of assets, unless the terms of any
such series shall provide otherwise.

         Section 11. Amendment. The Restated Certificate of Incorporation of the
Corporation shall not be further amended in any manner which would materially
alter or change the powers, preference or special rights of the Series A
Participating Preferred Stock so as to affect them adversely without the
affirmative vote of the holders of a majority of the outstanding shares of
Series A Participating Preferred Stock, voting separately as a class.

         Section 12. Fractional Shares. Series A Participating Preferred Stock
may be issued in fractions of a share which shall entitle the holder, in
proportion to such holder's fractional shares, to exercise voting rights,
receive dividends, participate in distributions and to have the benefit of all
other rights of holders of Series A Participating Preferred Stock.




                                       -4-
<PAGE>   46
         RESOLVED FURTHER, that the President or any Vice President and the
Secretary or any Assistant Secretary of this corporation be, and they hereby
are, authorized and directed to prepare and file a Certificate of Designation of
Rights, Preferences and Privileges in accordance with the foregoing resolution
and the provisions of Delaware law and to take such actions as they may deem
necessary or appropriate to carry out the intent of the foregoing resolution."

         I further declare under penalty of perjury that the matters set forth
in the foregoing Certificate of Designation are true and correct of my own
knowledge.

         Executed at Palo Alto, California on December 6, 1996.


                                                  /s/ J. CASEY MCGLYNN 
                                                  _____________________________
                                                  J. Casey McGlynn, Secretary




                                       -5-
<PAGE>   47
                                    EXHIBIT B

                           FORM OF RIGHTS CERTIFICATE


Certificate No. R-                                             _________ Rights


         NOT EXERCISABLE AFTER THE EARLIER OF (i) [TEN YEARS AFTER ADOPTION]
         (ii) THE DATE TERMINATED BY THE COMPANY OR (iii) THE DATE THE COMPANY
         EXCHANGES THE RIGHTS PURSUANT TO THE RIGHTS AGREEMENT. THE RIGHTS ARE
         SUBJECT TO REDEMPTION, AT THE OPTION OF THE COMPANY, AT $0.01 PER RIGHT
         ON THE TERMS SET FORTH IN THE RIGHTS AGREEMENT. UNDER CERTAIN
         CIRCUMSTANCES, RIGHTS BENEFICIALLY OWNED BY AN ACQUIRING PERSON OR AN
         AFFILIATE OR ASSOCIATE OF AN ACQUIRING PERSON (AS SUCH TERMS ARE
         DEFINED IN THE RIGHTS AGREEMENT) AND ANY SUBSEQUENT HOLDER OF SUCH
         RIGHTS MAY BECOME NULL AND VOID. [THE RIGHTS REPRESENTED BY THIS RIGHTS
         CERTIFICATE ARE OR WERE BENEFICIALLY OWNED BY A PERSON WHO WAS OR
         BECAME AN ACQUIRING PERSON OR AN AFFILIATE OR ASSOCIATE OF AN ACQUIRING
         PERSON (AS SUCH TERMS ARE DEFINED IN THE RIGHTS AGREEMENT).
         ACCORDINGLY, THIS RIGHTS CERTIFICATE AND THE RIGHTS REPRESENTED HEREBY
         MAY BECOME NULL AND VOID IN THE CIRCUMSTANCES SPECIFIED IN SECTION 7(e)
         OF SUCH RIGHTS AGREEMENT.]*


                               RIGHTS CERTIFICATE

                             ARTHROCARE CORPORATION

         This certifies that ______________________________, or registered
assigns, is the registered owner of the number of Rights set forth above, each
of which entitles the owner thereof, subject to the terms, provisions and
conditions of the Rights Agreement dated as of November 14, 1996, (the "RIGHTS
AGREEMENT"), between ArthroCare Corporation, a Delaware corporation (the
"COMPANY"), and Norwest Bank Minnesota, N.A. ( the "RIGHTS AGENT"), to purchase
from the Company at any time after the Distribution Date (as such term is
defined in the Rights Agreement) and prior to 5:00 P.M., New York time, on
November 14, 2006 at the office of the Rights Agent designated for such purpose,
or at the office of its successor as Rights Agent, one one-thousandth (1/1,000)
of a fully paid non-assessable share of Series A Participating Preferred Stock,
no par value, (the "PREFERRED SHARES"), of the Company, at a Exercise Price of 
Fifty Dollars ($50.00) per one-thousandth of a Preferred Share (the "EXERCISE 

- --------

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



<PAGE>   48
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
one-thousandths of a Preferred Share which may be purchased upon exercise
hereof) set forth above are the number and Exercise Price as of November 14,
1996 based on the Preferred Shares as constituted at such date. As provided in
the Rights Agreement, the Exercise Price and the number and kind of Preferred
Shares 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.

                    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 principal
executive offices of the Company and the above-mentioned office of the Rights
Agent.

                    Subject to the provisions of the Rights Agreement, the
Rights evidenced by this Rights Certificate (i) may be redeemed by the Company,
at its option, at a redemption price of $0.01 per Right or (ii) may be exchanged
by the Company in whole or in part for Common Shares, substantially equivalent
rights or other consideration as determined by the Company.

                    This Rights Certificate, with or without other Rights
Certificates, upon surrender at the office 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 amount of securities 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.

                  No fractional portion of less than one one-thousandth of a
Preferred Share will be issued upon the exercise of any Right or Rights
evidenced hereby but in lieu thereof a cash payment will be made, as provided in
the Rights Agreement.

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



                                       -2-
<PAGE>   49
         This Rights Certificate shall not be valid or obligatory for any
purpose until it shall have been countersigned by the Rights Agent.

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

Dated:  _______________, 19____.


ATTEST:                                ARTHROCARE CORPORATION


__________________________________     By:_____________________________________
J. Casey McGlynn, Secretary

                                      Its:_____________________________________

Countersigned:

NORWEST BANK MINNESOTA, N.A.
as Rights Agent


By:_______________________________


Its:______________________________





                                       -3-
<PAGE>   50
                   FORM OF REVERSE SIDE OF RIGHTS CERTIFICATE

                               FORM OF ASSIGNMENT

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

                  FOR VALUE RECEIVED  _____________________ hereby sells, 
assigns and transfers unto_____________________________________________________
                  (Please print name and address of transferee)
_______________________________________________________________________________
this Rights Certificate, together with all right, title and interest therein,
and does hereby irrevocably constitute and appoint ____________________________
Attorney, to transfer the within Rights Certificate on the books of the
within-named Company, with full power of substitution.


Dated: _______________, 19____


                                             __________________________________
                                             Signature


Signature Guaranteed:

         Signatures must be guaranteed by an eligible guarantor institution
(banks, stockbrokers, savings and loan associations and credit unions with
membership in an approved signature guarantee Medallion program), pursuant to
SEC Rule 17Ad-15.


Dated:_______________________                __________________________________
                                             Signature
<PAGE>   51
                                   CERTIFICATE


         The undersigned hereby certifies by checking the appropriate boxes
that:

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

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

Dated: _______________, 19____



                                             __________________________________
                                             Signature


Signature Guaranteed:

         Signatures must be guaranteed by an eligible guarantor institution
(banks, stockbrokers, savings and loan associations and credit unions with
membership in an approved signature guarantee Medallion program), pursuant to
SEC Rule 17Ad-15.

Dated: _______________



                                             __________________________________
                                             Signature
<PAGE>   52
             FORM OF REVERSE SIDE OF RIGHTS CERTIFICATE -- CONTINUED

                          FORM OF ELECTION TO PURCHASE

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

To:      ___________________________

                  The undersigned hereby irrevocably elects to exercise
_________________________ Rights represented by this Rights Certificate to
purchase the number of one-thousandths of a Preferred Share issuable upon the
exercise of such Rights and requests that certificates for such number of
one-thousandths of a Preferred Share issued in the name of:

Please insert social security
or other identifying number
______________________________________________________________________________
                         (Please print name and address)
______________________________________________________________________________

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

Please insert social security
or other identifying number
______________________________________________________________________________
                        (Please print name and address)
______________________________________________________________________________


Dated: _______________, 19____



                                             __________________________________
                                             Signature

Signature Guaranteed:

         Signatures must be guaranteed by an eligible guarantor institution
(banks, stockbrokers, savings and loan associations and credit unions with
membership in an approved signature guarantee Medallion program), pursuant to
SEC Rule 17Ad-15.


Dated: _______________



                                             __________________________________
                                             Signature
<PAGE>   53
                                   CERTIFICATE


         The undersigned hereby certifies by checking the appropriate boxes
that:

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

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



Dated: _______________, 19____



                                             __________________________________
                                             Signature


Signature Guaranteed:

         Signatures must be guaranteed by an eligible guarantor institution
(banks, stockbrokers, savings and loan associations and credit unions with
membership in an approved signature guarantee Medallion program), pursuant to
SEC Rule 17Ad-15.

Dated: _______________



                                             __________________________________
                                             Signature
<PAGE>   54
             FORM OF REVERSE SIDE OF RIGHTS CERTIFICATE -- CONTINUED

                                     NOTICE


                  The signature in the foregoing Forms of Assignment and
Election must conform to the name as written upon the face of this Rights
Certificate in every particular, without alteration or enlargement or any change
whatsoever.
<PAGE>   55
                                                                EXHIBIT C
                            STOCKHOLDER RIGHTS PLAN
                                   [COMPANY]

                                                   Summary of Rights

Distribution and              The Board of Directors has declared a dividend of 
Transfer of Rights;           one Right for each share of ArthroCare Corporation
Rights Certificate:           Common Stock outstanding.  Prior to the 
                              Distribution Date referred to below, the Rights
                              will be evidenced by and trade with the
                              certificates for the Common Stock. After the
                              Distribution Date, ArthroCare Corporation (the
                              "COMPANY") will mail Rights certificates to the
                              Company's stockholders and the Rights will become
                              transferable apart from the Common Stock.

Distribution Date:            Rights will separate from the Common Stock and 
                              become exercisable following (a) the tenth day
                              (or such later date as may be determined by a
                              majority of the Directors not affiliated with the
                              acquiring person or group (the "CONTINUING
                              DIRECTORS")) after a person or group acquires
                              beneficial ownership of 15% or more of the
                              Company's Common Stock or (b) the tenth business
                              day (or such later date as may be determined by a
                              majority of the Continuing Directors) after a
                              person or group announces a tender or exchange
                              offer, the consummation of which would result in
                              ownership by a person or group of 15% or more of
                              the Company's Common Stock.

Preferred Stock               After the Distribution Date, each Right will 
Purchasable Upon              entitle the holder to purchase for $50.00 (the 
Exercise of Rights:           "EXERCISE PRICE"), a fraction of a share of the 
                              Company's Preferred Stock with economic terms
                              similar to that of one share of the Company's
                              Common Stock.

Flip-In:                      If an acquiror (an "ACQUIRING PERSON") obtains 15%
                              or more of the Company's Common Stock (other than
                              pursuant to a tender offer deemed adequate and in
                              the best interests of the Company and its
                              stockholders by the Continuing Directors (a
                              "PERMITTED OFFER")), then each Right (other than
                              Rights owned by an Acquiring Person or its
                              affiliates) will entitle the holder thereof to
                              purchase, for the Exercise Price, a number of
                              shares of the Com pany's Common Stock having a
                              then current market value of twice the Exercise
                              Price.

Flip-Over:                    If, after an Acquiring Person obtains 15% or more 
                              of the Company's Common Stock, (a) the Company
                              merges into another entity, (b) an acquiring
                              entity merges into the Company or (c) the Company
                              sells more than 50% of the Company's assets or
                              earning
<PAGE>   56
                              power, then each Right (other than Rights owned by
                              an Acquiring Person or its affiliates) will
                              entitle the holder thereof to purchase, for the
                              Exercise Price, a number of shares of Common Stock
                              of the person engaging in the transaction having a
                              then current market value of twice the Exercise
                              Price (unless the transaction satisfies certain
                              conditions and is consummated with a person who
                              acquired shares pursuant to a Permitted Offer, in
                              which case the Rights will expire).

Exchange Provision:           At any time after the date an Acquiring Person 
                              obtains [15%] or more of the Company's Common
                              Stock and prior to the acquisition by the
                              Acquiring Person of 50% of the outstanding Common
                              Stock, a majority of the Board of Directors and a
                              majority of the Continuing Directors of the
                              Company may exchange the Rights (other than Rights
                              owned by the Acquiring Person or its affiliates),
                              in whole or in part, for shares of Common Stock of
                              the Company at an exchange ratio of one share of
                              Common Stock per Right (subject to adjustment).

Redemption of                 Rights will be redeemable at the Company's option 
the Rights:                   for $0.01 per Right at any time on or prior to the
                              tenth day (or such later date as may be determined
                              by a majority of the Continuing Directors) after
                              public announcement that a Person has acquired
                              beneficial ownership of 15% or more of the
                              Company's Common Stock (the "SHARES ACQUISITION
                              DATE").

Expiration of                 The Rights expire on the earliest of (a) November
the Rights:                   14, 2006, (b) exchange or redemption of the Rights
                              as described above, or (c) consummation of a
                              merger, consolidation or asset sale resulting in
                              expiration of the Rights as described above.

Amendment of                  The terms of the Rights and the Rights Agreement
Terms of Rights:              may be amended in any respect without the consent 
                              of the Rights holders on or prior to the
                              Distribution Date; thereafter, the terms of the
                              Rights and the Rights Agreement may be amended
                              without the consent of the Rights holders in order
                              to cure any ambiguities or to make changes which
                              do not adversely affect the interests of Rights
                              holders (other than the Acquiring Person).

Voting Rights:                Rights will not have any voting rights.

Anti-Dilution                 Rights will have the benefit of certain customary
Provisions:                   anti-dilution provisions.

Taxes:                        The Rights distribution should not be taxable for 
                              federal income tax purposes. However, following an
                              event which renders the Rights exercisable or upon
                              redemption of the Rights, stockholders may
                              recognize taxable income.




                                       -2-
<PAGE>   57
The foregoing is a summary of certain principal terms of the Stockholder Rights
Plan only and is qualified in its entirety by reference to the detailed terms of
the Rights Agreement dated as of November 14, 1996, between the Company and the
Rights Agent.


                                       -3-


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