CV THERAPEUTICS INC
8-K, 1999-02-05
COMMERCIAL PHYSICAL & BIOLOGICAL RESEARCH
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<PAGE>

                         SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, D. C.  20549
                                          
                                      FORM 8-K
                                          
                       RELATING TO ADOPTION OF A RIGHTS PLAN
                                          
                       PURSUANT TO SECTION 13 OR 15(d) OF THE
                                          
                          SECURITIES EXCHANGE ACT OF 1934
                                          
        Date of Report (Date of earliest event reported):  February 2, 1999
                                          
                               CV THERAPEUTICS, INC.
                                          
               (Exact name of registrant as specified in its charter)
                                          
                                      DELAWARE
                   (State or other jurisdiction of incorporation)
                                          
                                          
                                          
                                          

              0-21643                                  43-1570294
       (Commission File No.)                (IRS Employer Identification No.)

                                          
                                 3172 PORTER DRIVE
                                          
                                PALO ALTO, CA  94304
               (Address of principal executive offices and zip code)
                                          
         Registrant's telephone number, including area code: (650) 812-0585

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

<PAGE>

ITEM 5.   OTHER EVENTS.

     On February 2, 1999 the Board of Directors of CV THERAPEUTICS, INC. (the
"Company") approved the adoption of a Share Purchase Rights Plan (the "Plan"). 
Terms of the Plan provide for a dividend distribution of one preferred share
purchase right (a "Right") for each outstanding share of common stock, par value
$.001 per share (the "Common Shares"), of the Company.  The dividend is payable
on February 23, 1999 (the "Record Date") to the stockholders of record on that
date.  Each Right entitles the registered holder to purchase from the Company
one one-hundredth of a share of Series A Junior Participating Preferred Stock,
par value $.001 per share (the "Preferred Shares"), at a price of $35.00 per one
one-hundredth of a Preferred Share (the "Purchase Price"), subject to
adjustment.  Each one one-hundredth of a share of Preferred Shares has
designations and powers, preferences and rights, and the qualifications,
limitations and restrictions which make its value approximately equal to the
value of a Common Share.  The description and terms of the Rights are set forth
in a Rights Agreement (the "Rights Agreement"), dated as of February 2, 1999
entered into between the Company and Norwest Shareholder Services, as rights
agent (the "Rights Agent").

     Initially, the Rights will be evidenced by the stock certificates
representing the Common Shares then outstanding, and no separate Right
Certificates, as defined, will be distributed.  Until the earlier to occur of
(i) the date of a public announcement that a person, entity or group of
affiliated or associated persons have acquired beneficial ownership of 20% or
more of the outstanding Common Shares (an "Acquiring Person") or (ii) 10
business days (or such later date as may be determined by action of the Board of
Directors prior to such time as any person or entity becomes an Acquiring
Person) following the commencement of, or announcement of an intention to
commence, a tender offer or exchange offer the consummation of which would
result in any person or entity becoming an Acquiring Person (the earlier of such
dates being called the "Distribution Date"), the Rights will be evidenced, with
respect to any of the Common Share certificates outstanding as of the Record
Date, by such Common Share certificate with or without a copy of the Summary of
Rights, which is included in the Rights Agreement as Exhibit C thereof (the
"Summary of Rights"). 

     Until the Distribution Date, the Rights will be transferable with and only
with the Common Shares.  Until the Distribution Date (or earlier redemption or
expiration of the Rights), new Common Share certificates issued after the Record
Date, upon transfer or new issuance of Common Shares, will contain a notation
incorporating the Rights Agreement by reference.  Until the Distribution Date
(or 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 such 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.  As soon as practicable following the
Distribution Date, separate certificates evidencing the Rights ("Right
Certificates") will be mailed to holders of record of the Common Shares as of
the close of business on the Distribution Date and such separate Right
Certificates alone will evidence the Rights.


                                          1.

<PAGE>

     The Rights are not exercisable until the Distribution Date.  The Rights
will expire on February 1, 2009 (the "Final Expiration Date"), unless the Rights
are earlier redeemed or exchanged by the Company, in each case, as described
below.

     The Purchase Price payable, and the number of Preferred Shares or other
securities or other property, upon exercise of the Rights are subject to
adjustment from time to time to prevent dilution (i) in the event of a stock
dividend on, or a subdivision, combination or reclassification of, the Preferred
Shares, (ii) upon the grant to holders of the Preferred Shares of certain rights
or warrants to subscribe for or purchase Preferred Shares at a price, or
securities convertible into Preferred Shares with a conversion price, less than
the then current market price of the Preferred Shares or (iii) upon the
distribution to holders of the Preferred Shares of evidences of indebtedness or
assets (excluding regular periodic cash dividends paid out of earnings or
retained earnings or dividends payable in Preferred Shares) or of subscription
rights or warrants (other than those referred to above).  The exercise of Rights
for Preferred Shares is at all times subject to the availability of a sufficient
number of authorized but unissued Preferred Shares.  

     The number of outstanding Rights and the number of one one-hundredths of a
Preferred Share issuable upon exercise of each Right are also subject to
adjustment in the event of a stock split of the Common Shares or a stock
dividend on the Common Shares payable in Common Shares or subdivisions,
consolidation or combinations of the Common Shares occurring, in any case, prior
to the Distribution Date.

     Preferred Shares purchasable upon exercise of the Rights will not be
redeemable.  Each Preferred Share will be entitled to a minimum preferential
quarterly dividend payment of $1.00 but will be entitled to an aggregate
dividend of 100 times the dividend declared per Common Share.  In the event of
liquidation, the holders of the Preferred Shares would be entitled to a minimum
preferential liquidation payment of $100 per share, but would be entitled to
receive an aggregate payment equal to 100 times the payment made per Common
Share.  Each Preferred Share will have 100 votes, voting together with the
Common Shares.  Finally, in the event of any merger, consolidation or other
transaction in which Common Shares are exchanged, each Preferred Share will be
entitled to receive 100 times the amount of consideration received per Common
Share.  These rights are protected by customary anti-dilution provisions. 
Because of the nature of the Preferred Shares' dividend and liquidation rights,
the value of one one-hundredth of a Preferred Share should approximate the value
of one Common Share.  The Preferred Shares would rank junior to any other series
of the Company's preferred stock.

     In the event that any person or group of affiliated or associated persons
becomes an Acquiring Person, proper provision shall be made so that each holder
of a Right, other than Rights beneficially owned by the Acquiring Person and its
associates and affiliates (which will thereafter be void), will for a 60-day
period have the right to receive upon exercise that number of Common Shares
having a market value of two times the exercise price of the Right (or, if such
number of shares is not and cannot be authorized, the Company may issue
Preferred Shares, cash, debt, stock or a combination thereof in exchange for the
Rights).  This right will terminate 60 days after the date on which the Rights
become nonredeemable (as described below), unless there is an injunction or
similar obstacle to exercise of the Rights, in which event this right will
terminate 60 days after the date on which the Rights again become exercisable.


                                          2.

<PAGE>

     Generally, under the Plan, an "Acquiring Person" shall not be deemed to
include (i) the Company, (ii) a subsidiary of the Company, (iii) any employee
benefit or compensation plan of the Company, or (iv) any entity holding Common
Shares for or pursuant to the terms of any such employee benefit or compensation
plan.  In addition, except under limited circumstances, no person or entity
shall become an Acquiring Person as the result of the 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
or entity to 20% or more of the Common Shares then outstanding. 

     In the event that the Company is acquired in a merger or other business
combination transaction or 50% or more of its consolidated assets or earning
power are sold to an Acquiring Person, its associates or affiliates or certain
other persons in which such persons have an interest, proper provision will be
made so that each holder of a Right will thereafter have the right to receive,
upon the exercise thereof at the then current exercise price of the Right, that
number of shares of common stock of the acquiring company which at the time of
such transaction will have a market value of two times the exercise price of the
Right.  

     At any time after an Acquiring Person becomes an Acquiring Person and prior
to the acquisition by such Acquiring Person of 50% or more of the outstanding
Common Shares, the Board of Directors of the Company may exchange the Rights
(other than Rights owned by such person or group which have become void), in
whole or in part, at an exchange ratio of one Common Share, or one one-hundredth
of a Preferred Share, per Right (or, at the election of the Company, the Company
may issue cash, debt, stock or a combination thereof in exchange for the
Rights), subject to adjustment.

     With certain exceptions, no adjustment in the Purchase Price will be
required until cumulative adjustments require an adjustment of at least 1% in
such Purchase Price.  No fractional Preferred Shares will be issued (other than
fractions which are integral multiples of the number of one one-hundredths of a
Preferred Share issuable upon the exercise of one Right, which may, at the
election of the Company, be evidenced by depositary receipts), and in lieu
thereof, an adjustment in cash will be made based on the market price of the
Preferred Shares on the last trading day prior to the date of exercise.

     At any time prior to the earliest of (i) the day of the first public
announcement that a person has become an Acquiring Person or (ii) the Final
Expiration Date, the Board of Directors of the Company may redeem the Rights in
whole, but not in part, at a price of $.01 per Right (the "Redemption Price"). 
Following the expiration of the above periods, the Rights become nonredeemable. 
Immediately upon any redemption of the Rights, the right to exercise the Rights
will terminate and the only right of the holders of Rights will be to receive
the Redemption Price.  

     The terms of the Rights may be amended by the Board of Directors of the
Company without the consent of the holders of the Rights, except that from and
after such time as the rights are distributed no such amendment may adversely
affect the interest of the holders of the Rights excluding the interests of an
Acquiring Person. 


                                          3.

<PAGE>

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

     The Rights have certain anti-takeover effects.  The Rights will cause
substantial dilution to a person or group that attempts to acquire the Company
on terms not approved by the Company's Board of Directors.  The Rights should
not interfere with any merger or other business combination approved by the
Board of Directors since the Rights may be amended to permit such acquisition or
redeemed by the Company at $.01 per Right prior to the earliest of (i) the time
that a person or group has acquired beneficial ownership of 20% or more of the
Common Shares or (ii) the final expiration date of the rights.

ITEM 7.   EXHIBITS.

<TABLE>

      <S>      <C>
      99.1     Press Release, dated as of February 2, 1999 entitled "CV
               Therapeutics, Inc. Adopts Stockholder Rights Plan."

      99.2     Rights Agreement dated as of February 2, 1999 among CV
               Therapeutics, Inc. and Norwest Shareholder Services.

      99.3     Registrant's Certificate of Designation of Series A Junior
               Participating Preferred Stock.

      99.4     Form of Rights Certificate.

</TABLE>

                                          4.

<PAGE>

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

                              CV THERAPEUTICS,  INC.



Dated:  February 2 , 1999     By:  /s/ Louis G. Lange
                                 -------------------------------
                              Its:  Chief Executive Officer 
                                  -------------------------------













                                          5.

<PAGE>

                                  INDEX TO EXHIBITS
                                          
<TABLE>

<S>       <C>
99.1      Press Release, dated as of February 2, 1999 entitled "CV Therapeutics,
          Inc. Adopts Stockholder Rights Plan."

99.2      Rights Agreement dated as of February 2, 1999 among CV Therapeutics,
          Inc. and Norwest Shareholder Services.

99.3      Registrant's Certificate of Designation of Series A Junior
          Participating Preferred Stock.

99.4      Form of Rights Certificate.

</TABLE>
















                                          6.


<PAGE>

                                 PRESS RELEASE

FOR IMMEDIATE RELEASE

                                                        Contact: Dan Spiegelman
                                                        Chief Financial Officer
                                                                   650/812-9509
                                                                             or
                                                               Christopher Chai
                                                   Director, Strategic Planning
                                                         and Investor Relations
                                                                   650/812-9560


              CV THERAPEUTICS ADOPTS STOCKHOLDER RIGHTS PLAN

PALO ALTO, CA (February 4, 1999) -- CV Therapeutics, Inc. (Nasdaq: CVTX) 
announced that its Board of Directors approved the adoption of a Stockholder 
Rights Plan under which all stockholders of record as of February 23, 1999 
will receive rights to purchase shares of a new series of Preferred Stock.

     The Rights Plan is designed to enable all CVT stockholders to realize the 
full value of their investment and to provide for fair and equal treatment for 
all stockholders in the event that an unsolicited attempt is made to acquire 
CVT. The adoption of the Rights Plan is intended as a means to guard against 
abusive takeover tactics and is not in response to any particular proposal.

     The rights will be distributed as a non-taxable dividend and will expire 
in ten years from the Record Date. The rights will be exercisable only if a 
person or group acquires 20 percent or more of the CVT Common Stock or 
announces a tender offer of CVT's Common Stock. If a person acquires 20 
percent or more of CVT's Common Stock, all rightsholders except the buyer will 
be entitled to acquire CVT Common Stock at a discount. The effect will be to 
discourage acquisitions of more than 20 percent of CVT's Common Stock without 
negotiations with the Board.

     The rights will trade with CVT's Common Stock, unless and until they are 
separated upon the occurrence of certain future events. The rights 
distribution is not taxable to the stockholders. CVT's Board of Directors may 
terminate the Rights Plan at any time or redeem the rights prior to the time a 
person acquires more than 20 percent of the CVT Common Stock. Additional 
details regarding the Rights Plan will be outlined in a summary to be mailed 
to all stockholders following the Record Date.


                                    -more-

<PAGE>

     In addition to historical information, this press release contains 
forward-looking statements that involve risks and uncertainties, including, 
but not limited to uncertainties related to the Company's early stage of 
development. These factors are more fully discussed in the Company's Annual 
Report on Form 10-K for the year ended December 31, 1997.

     CV Therapeutics, Inc., headquartered in Palo Alto, CA, is a 
biopharmaceutical company focused on the application of molecular cardiology 
to the discovery, development and commercialization of novel, small molecule 
drugs for the treatment of cardiovascular diseases. The Company currently has 
three drug candidates in clinical trials. Ranolazine, for the potential 
treatment of angina, is in Phase III clinical trials. Adentri-TM- (CVT-124), 
for the potential treatment of congestive heart failure (CHF), is in Phase II 
clinical trials. A third product, CVT-510, for the potential treatment of 
atrial arrhythmias, is in Phase I clinical trials. For more information, 
please visit CV Therapeutics' web site at www.cvt.com.

                                     -end-



<PAGE>



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

                               CV THERAPEUTICS, INC.

                                        AND

                            NORWEST BANK MINNESOTA, N.A.
                                  AS RIGHTS AGENT

                                  RIGHTS AGREEMENT

                            DATED AS OF FEBRUARY 2, 1999

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

<PAGE>

                                 TABLE OF CONTENTS

<TABLE>
<CAPTION>

                                                                            PAGE
<S>                                                                         <C>
SECTION 1.     CERTAIN DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . .1

SECTION 2.     APPOINTMENT OF RIGHTS AGENT.. . . . . . . . . . . . . . . . . . . . .5

SECTION 3.     ISSUE OF RIGHT CERTIFICATES.. . . . . . . . . . . . . . . . . . . . .5

SECTION 4.     FORM OF RIGHT CERTIFICATES. . . . . . . . . . . . . . . . . . . . . .7

SECTION 5.     COUNTERSIGNATURE AND REGISTRATION.. . . . . . . . . . . . . . . . . .8

SECTION 6.     TRANSFER, SPLIT UP, COMBINATION AND EXCHANGE OF RIGHT       
               CERTIFICATES; MUTILATED, DESTROYED, LOST OR STOLEN 
               RIGHT CERTIFICATES. . . . . . . . . . . . . . . . . . . . . . . . . .8

SECTION 7.     EXERCISE OF RIGHTS; PURCHASE PRICE; EXPIRATION DATE OF RIGHTS.. . . .9

SECTION 8.     CANCELLATION AND DESTRUCTION OF RIGHT CERTIFICATES. . . . . . . . . 11

SECTION 9.     AVAILABILITY OF PREFERRED SHARES. . . . . . . . . . . . . . . . . . 11

SECTION 10.    PREFERRED SHARES RECORD DATE. . . . . . . . . . . . . . . . . . . . 12

SECTION 11.    ADJUSTMENT OF PURCHASE PRICE, NUMBER OF SHARES OR NUMBER OF 
               RIGHTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

SECTION 12.    CERTIFICATE OF ADJUSTED PURCHASE PRICE OR NUMBER OF SHARES. . . . . 22

SECTION 13.    CONSOLIDATION, MERGER OR SALE OR TRANSFER OF ASSETS OR 
               EARNING POWER . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

SECTION 14.    FRACTIONAL RIGHTS AND FRACTIONAL SHARES . . . . . . . . . . . . . . 26

SECTION 15.    RIGHTS OF ACTION. . . . . . . . . . . . . . . . . . . . . . . . . . 27

SECTION 16.    AGREEMENT OF RIGHT HOLDERS. . . . . . . . . . . . . . . . . . . . . 28

SECTION 17.    RIGHT CERTIFICATE HOLDER NOT DEEMED A STOCKHOLDER . . . . . . . . . 28

SECTION 18.    CONCERNING THE RIGHTS AGENT . . . . . . . . . . . . . . . . . . . . 29

SECTION 19.    MERGER OR CONSOLIDATION OR CHANGE OF NAME OF RIGHTS AGENT . . . . . 29

SECTION 20.    DUTIES OF RIGHTS AGENT. . . . . . . . . . . . . . . . . . . . . . . 30

SECTION 21.    CHANGE OF RIGHTS AGENT. . . . . . . . . . . . . . . . . . . . . . . 32

SECTION 22.    ISSUANCE OF NEW RIGHT CERTIFICATES. . . . . . . . . . . . . . . . . 33

SECTION 23.    REDEMPTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

SECTION 24.    EXCHANGE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

SECTION 25.    NOTICE OF CERTAIN EVENTS. . . . . . . . . . . . . . . . . . . . . . 38

SECTION 26.    NOTICES.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

SECTION 27.    SUPPLEMENTS AND AMENDMENTS. . . . . . . . . . . . . . . . . . . . . 39

SECTION 28.    DETERMINATION AND ACTIONS BY THE BOARD OF DIRECTORS, ETC. . . . . . 40

SECTION 29.    SUCCESSORS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

SECTION 30.    BENEFITS OF THIS AGREEMENT. . . . . . . . . . . . . . . . . . . . . 41

</TABLE>

<PAGE>


                                 TABLE OF CONTENTS
                                    (CONTINUED)

<TABLE>
<CAPTION>

                                                                            PAGE
<S>                                                                         <C>
SECTION 31.    SEVERABILITY. . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

SECTION 32.    GOVERNING LAW . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

SECTION 33.    COUNTERPARTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

SECTION 34.    DESCRIPTIVE HEADINGS. . . . . . . . . . . . . . . . . . . . . . . . 41

</TABLE>

Exhibit A -  CERTIFICATE OF DESIGNATION

Exhibit B -  FORM OF RIGHT CERTIFICATE

Exhibit C -  SUMMARY OF RIGHTS TO PURCHASE PREFERRED SHARES


<PAGE>


                                   RIGHTS AGREEMENT


       THIS RIGHTS AGREEMENT ("AGREEMENT"), dated as of February 2, 1999,
between CV THERAPEUTICS, INC., a Delaware corporation (the "Company"), and
NORWEST BANK MINNESOTA, N.A. ("Rights Agent").

       The Board of Directors of the Company has authorized and declared a
dividend of one preferred share purchase right (a "Right") for each Common Share
(as such term is hereinafter defined) outstanding at the close of business on
February 23, 1999 (the "Record Date"), each Right representing the right to
purchase one one-hundredth of a Preferred Share (as such term is hereinafter
defined), upon the terms and subject to the conditions herein set forth, and has
further authorized and directed the issuance of one Right with respect to each
Common Share that shall become outstanding between the Record Date and the
earliest to occur of the Distribution Date, the Redemption Date and the Final
Expiration Date (as such terms are hereinafter defined); PROVIDED, HOWEVER, that
Rights may be issued with respect to Common Shares that shall become outstanding
after the Distribution Date and prior to the earlier of the Redemption Date and
the Final Expiration Date in accordance with the provisions of Section 22
hereof.

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

SECTION 1.    CERTAIN DEFINITIONS.  For purposes of this Agreement, the
              following terms have the meanings indicated:

              (a)    "ACQUIRING PERSON" shall mean any Person (as such term is
                     hereinafter defined) who or which, together with all
                     Affiliates and Associates (as such terms are hereinafter
                     defined) of such Person, shall be the Beneficial Owner (as
                     such term is hereinafter defined) of 20% or more of the
                     Common Shares then outstanding.  Notwithstanding the
                     foregoing, (A) the term Acquiring Person shall not include
                     (i) the Company, (ii) any Subsidiary (as such term is
                     hereinafter defined) of the Company, (iii) any employee
                     benefit or compensation plan of the Company or any
                     Subsidiary of the Company, (iv) any entity holding Common
                     Shares for or pursuant to the terms of any such employee
                     benefit or compensation plan, or (v) an Excluded Person,
                     and (B) no Person shall become an "Acquiring Person" either
                     (x) 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 20% or more of the
                     Common Shares then outstanding; PROVIDED, HOWEVER, that if
                     a Person shall become the Beneficial Owner of 20% or more
                     of the Common Shares then outstanding by reason of share
                     purchases by the Company and shall, following written
                     notice from, or public disclosure by the Company of such
                     share purchases by the Company, become the Beneficial Owner
                     of any additional Common Shares without the prior 


                                          1

<PAGE>

                     consent of the Company and shall then Beneficially Own more
                     than 20% of the Common Shares then outstanding, then such
                     Person shall be deemed to be an "Acquiring Person," or (y)
                     if the Board of Directors determines in good faith that a
                     Person who would otherwise be an "Acquiring Person," as
                     defined pursuant to the foregoing provisions of this
                     paragraph (a), has become such inadvertently, and such
                     Person divests, as promptly as practicable (as determined
                     in good faith by the Board of Directors), but in any event
                     within five Business Days, following receipt of written
                     notice from the Company of such event, of Beneficial
                     Ownership of 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 no longer be deemed
                     to be an "Acquiring Person" for purposes of this Agreement;
                     PROVIDED, HOWEVER, that if such Person shall again become
                     the Beneficial Owner of 20% or more of the Common Shares
                     then outstanding, such Person shall be deemed an "Acquiring
                     Person," subject to the exceptions set forth in this
                     Section 1(a).

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

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

                     (i)    which such Person or any of such Person's Affiliates
                            or Associates is deemed to beneficially own, within
                            the meaning of Rule 13d-3 of the General Rules and
                            Regulations under the Exchange Act as in effect on
                            the date of this Rights Agreement;

                     (ii)   which such Person or any of such Person's Affiliates
                            or Associates has (A) the right to acquire (whether
                            such right is exercisable immediately or only after
                            the passage of time) pursuant to any agreement,
                            arrangement or understanding (other than customary
                            agreements with and between underwriters and selling
                            group members with respect to a bona fide public
                            offering of securities and other than agreements
                            between the Company and any corporate partner
                            pursuant to which the right to purchase shares is
                            conditioned upon the achievement of research or
                            development milestones) or upon the exercise of
                            conversion rights, exchange rights, rights (other
                            than these Rights), warrants or options, or
                            otherwise; PROVIDED, HOWEVER, that a Person shall
                            not be deemed the Beneficial Owner of, or to
                            beneficially own, securities tendered pursuant to a
                            tender or exchange offer made by or on behalf of


                                          2

<PAGE>

                            such Person or any of such Person's Affiliates or
                            Associates until such tendered securities are
                            accepted for purchase or exchange; or (B) the right
                            to vote pursuant to any agreement, arrangement or
                            understanding; PROVIDED, HOWEVER, that a Person
                            shall not be deemed the Beneficial Owner of, or to
                            beneficially own, any security if the agreement,
                            arrangement or understanding to vote such security
                            (1) arises solely from a revocable proxy or consent
                            given to such Person in response to a public proxy
                            or consent solicitation made pursuant to, and in
                            accordance with, the applicable rules and
                            regulations promulgated under the Exchange Act and
                            (2) is not also then reportable on Schedule 13D
                            under the Exchange Act (or any comparable or
                            successor report); or

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

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

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

              (e)    "CLOSE OF BUSINESS" on any given date shall mean 5:00 p.m.,
                     Pacific Time, on such date; PROVIDED, HOWEVER, that if such
                     date is not a Business Day it shall mean 5:00 p.m., Pacific
                     Time, on the next succeeding Business Day.

              (f)    "COMMON SHARES" shall mean the shares of common stock, par
                     value $.001 per share, of the Company; PROVIDED, HOWEVER,
                     that, "Common Shares," when used in this Agreement in
                     connection with a specific 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.


                                          3

<PAGE>

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

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

              (i)    "INTERESTED STOCKHOLDER" shall mean any Acquiring Person or
                     any Affiliate or Associate of an Acquiring Person or any
                     other Person in which any such Acquiring Person, Affiliate
                     or Associate has an interest, or any other Person acting
                     directly or indirectly on behalf of or in concert with any
                     such Acquiring Person, Affiliate or Associate. 

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

              (k)    "PREFERRED SHARES" shall mean shares of Series A Junior
                     Participating Preferred Stock, par value $.001 per share,
                     of the Company having the designations and the powers,
                     preferences and rights, and the qualifications, limitations
                     and restrictions set forth in the Form of Certificate of
                     Designation attached to this Agreement as EXHIBIT A.

              (l)    "PURCHASE PRICE" shall have the meaning set forth in
                     Section 7(b) hereof.

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

              (n)    "SHARES ACQUISITION DATE" shall mean the first date of
                     public announcement by the Company or an Acquiring Person
                     that an Acquiring Person has become such; PROVIDED, HOWEVER
                     that, if such Person is determined not to have become an
                     Acquiring Person pursuant to clause (y) of
                     Subsection 1(a)(B) hereof, then no Shares Acquisition Date
                     shall be deemed to have occurred.

              (o)    "SUBSIDIARY" of any Person shall mean any corporation or
                     other entity of which a majority of the voting power of the
                     voting equity securities or equity interest is owned,
                     directly or indirectly, by such Person.

              (p)    "TRANSACTION" shall mean any merger, consolidation or sale
                     of assets described in Section 13(a) hereof or any
                     acquisition of Common Shares which would result in a Person
                     becoming an Acquiring Person or a Principal Party (as such
                     term is hereinafter defined).

              (q)    "TRANSACTION PERSON" with respect to a Transaction shall
                     mean (i) any Person who (x) is or will become an Acquiring
                     Person or a Principal Party (as such term is hereinafter
                     defined) if the Transaction were to be consummated and
                     (y) directly or indirectly proposed or nominated a director
                     of the Company which director is in office at the time of


                                          4

<PAGE>

                     consideration of the Transaction, or (ii) an Affiliate or
                     Associate of such a Person.

SECTION 2.    APPOINTMENT OF RIGHTS AGENT.  The Company hereby appoints the
              Rights Agent to act as agent for the Company in accordance with
              the terms and conditions hereof, and the Rights Agent hereby
              accepts such appointment.  The Company may from time to time
              appoint such co-Rights Agents as it may deem necessary or
              desirable.

SECTION 3.    ISSUE OF RIGHT CERTIFICATES.

              (a)    Until the earlier of (i) the Shares Acquisition Date or
                     (ii) the tenth Business Day (or such later date as may be
                     determined by action of the Board of Directors prior to
                     such time as any Person becomes an Acquiring Person) after
                     the date of the commencement (determined in accordance with
                     Rule 14d-2 under the Exchange Act) by any Person (other
                     than the Company, any Subsidiary of the Company, any
                     employee benefit plan of the Company or of any Subsidiary
                     of the Company or any entity holding Common Shares for or
                     pursuant to the terms of any such plan) of, or of the first
                     public announcement of the intention of any Person (other
                     than the Company, any Subsidiary of the Company, any
                     employee benefit plan of the Company or of any Subsidiary
                     of the Company or any entity holding Common Shares for or
                     pursuant to the terms of any such plan) to commence, a
                     tender or exchange offer (which intention to commence
                     remains in effect for five Business Days after such
                     announcement), the consummation of which would result in
                     any Person becoming an Acquiring Person (including any such
                     date which is after the date of this Agreement and prior to
                     the issuance of the Rights, the earlier of such dates being
                     herein referred to as the "Distribution Date"), (x) the
                     Rights will be evidenced by the certificates for Common
                     Shares registered in the names of the holders thereof
                     (which certificates shall also be deemed to be Right
                     Certificates) and not by separate Right Certificates, and
                     (y) the Rights (and the right to receive Right Certificates
                     therefor) will be transferable only in connection with the
                     transfer of Common Shares.  As soon as practicable after
                     the Distribution Date, the Company will prepare and
                     execute, the Rights Agent will countersign, and the Company
                     will send or cause to be sent (and the Rights Agent will,
                     if requested, send) by first-class, insured,
                     postage-prepaid mail, to each record holder of Common
                     Shares as of the Close of Business on the Distribution
                     Date, at the address of such holder shown on the records of
                     the Company, a Right Certificate, in substantially the form
                     of EXHIBIT B hereto (a "Right Certificate"), evidencing one
                     Right for each Common Share so held, subject to the
                     adjustment provisions of Section 11 of this Rights
                     Agreement.  As of the Distribution Date, the Rights will be
                     evidenced solely by such Right Certificates.



                                          5

<PAGE>

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

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

                            This certificate also evidences and entitles
                            the holder hereof to certain rights as set
                            forth in a Rights Agreement between CV
                            Therapeutics, Inc. (the "Corporation") and
                            Norwest Bank Minnesota, N.A., as Rights Agent
                            (the "Rights Agent"), dated as of February 2,
                            1999, as amended from time to time (the
                            "Rights Agreement"), the terms of which are
                            hereby incorporated herein by reference and a
                            copy of which is on file at the principal
                            executive offices of the 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. 
                            The Corporation will mail to the holder of
                            this certificate a copy of the Rights
                            Agreement without charge after receipt of a
                            written request therefor addressed to the
                            Secretary of the Corporation.  As described
                            in the Rights Agreement, Rights issued to any
                            Person who becomes an Acquiring Person or an
                            Affiliate or Associate thereof (as defined in
                            the Rights Agreement) and certain related
                            persons, whether currently held by or on
                            behalf of such Person or by any subsequent
                            holder, shall become null and void.


                                          6


<PAGE>

                     With respect to such certificates containing the foregoing
                     legend, until the Distribution Date, the Rights associated
                     with the Common Shares represented by such certificates
                     shall be evidenced by such certificates alone, and the
                     surrender for transfer of any such certificate shall also
                     constitute the transfer of the Rights associated with the
                     Common Shares represented thereby.  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.  Notwithstanding this Section
                     3(c), the omission of a legend shall not affect the
                     enforceability of any part of this Rights Agreement or the
                     rights of any holder of the Rights.

SECTION 4.    FORM OF RIGHT CERTIFICATES. 

              (a)    The Right Certificates (and the form of election to
                     purchase Preferred Shares, the form of assignment and the
                     form of certification to be printed on the reverse thereof)
                     shall be substantially the same as EXHIBIT B hereto and may
                     have such marks of identification or designation and such
                     legends, summaries or endorsements printed thereon as the
                     Company may deem appropriate and as are not inconsistent
                     with the provisions of this Agreement, or as may be
                     required to comply with any applicable law or with any rule
                     or regulation made pursuant thereto or with any rule or
                     regulation of any stock exchange or quotation system on
                     which the Rights may from time to time be listed, or to
                     conform to usage.  Subject to the provisions of Sections 7,
                     11 and 22 hereof, the Right Certificates shall entitle the
                     holders thereof to purchase such number of one
                     one-hundredths of a Preferred Share as shall be set forth
                     therein at the price per one one-hundredth of a Preferred
                     Share set forth therein (the "Purchase Price"), but the
                     number of such one one-hundredths of a Preferred Share and
                     the Purchase Price shall be subject to adjustment as
                     provided herein.

              (b)    Any Right Certificate issued pursuant to Section 3(a) or
                     Section 22 hereof that represents Rights which are null and
                     void pursuant to Section 11(a)(ii) hereof and any Right
                     Certificate issued pursuant to Section 6 or Section 11
                     hereof upon transfer, exchange, replacement or adjustment
                     of any other Right Certificate referred to in this sentence
                     shall contain (to the extent feasible) the following
                     legend:

                            The Rights represented by this Right
                            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 


                                          7

<PAGE>


                            Right Certificate and the Rights represented hereby
                            are null and void.

                     The provisions of Section 11(a)(ii) hereof shall be
                     operative whether or not the foregoing legend is contained
                     on any such Right Certificate.

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

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

SECTION 6.    TRANSFER, SPLIT UP, COMBINATION AND EXCHANGE OF RIGHT
              CERTIFICATES; MUTILATED, DESTROYED, LOST OR STOLEN RIGHT
              CERTIFICATES.  Subject to the provisions of Section 11(a)(ii),
              Section 14 and Section 24 hereof, at any time after the Close of
              Business on the Distribution Date, and at or prior to the Close of
              Business on the earlier of the Redemption Date or the Final
              Expiration Date, any Right Certificate or Right Certificates may
              be transferred, split up, combined or exchanged for another Right
              Certificate or Right Certificates, entitling the registered holder
              to purchase a like number of one one-hundredths of a Preferred
              Share as the Right Certificate or Right Certificates surrendered
              then entitled such holder to purchase.  Any registered holder
              desiring to transfer, split up, combine or exchange any Right
              Certificate or Right Certificates shall make such request in
              writing delivered to the Rights Agent, and shall surrender the
              Right Certificate or Right Certificates to be transferred, split
              up, combined or exchanged at the office


                                          8

<PAGE>

              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
              Right Certificate until the registered holder shall have completed
              and signed the certificate contained in the form of assignment on
              the reverse side of such Right Certificate and shall have provided
              such additional evidence of the identity of the Beneficial Owner
              (or former Beneficial Owner) or Affiliates or Associates thereof
              as the Company shall reasonably request.  Thereupon the Rights
              Agent shall, subject to Section 11(a)(ii), Section 14 and
              Section 24 hereof, countersign and deliver to the person entitled
              thereto a Right Certificate or Right Certificates, as the case may
              be, as so requested.  The Company may require payment of a sum
              sufficient to cover any tax or governmental charge that may be
              imposed in connection with any transfer, split up, combination or
              exchange of Right Certificates.

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

              Notwithstanding any other provisions hereof, the Company and the
              Rights Agent may amend this Rights Agreement to provide for
              uncertificated Rights in addition to or in place of Rights
              evidenced by Rights Certificates.

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

              (a)    The registered holder of any Right Certificate may exercise
                     the Rights evidenced thereby (except as otherwise provided
                     herein) in whole or in part at any time after the
                     Distribution Date upon surrender of the Right Certificate,
                     with the form of election to purchase on the reverse side
                     thereof duly executed, to the Rights Agent at the office of
                     the Rights Agent designated for such purpose, together with
                     payment of the Purchase Price for each one one-hundredth of
                     a Preferred Share (or such other number of shares or other
                     securities) as to which the Rights are exercised, at or
                     prior to the earliest of (i) the Close of Business on
                     February 1, 2009 (the "Final Expiration Date"), (ii) the
                     time at which the Rights are redeemed as provided in
                     Section 23 hereof (the "Redemption Date"), or (iii) the
                     time at which such Rights are exchanged as provided in
                     Section 24 hereof.

              (b)    The purchase price (the "Purchase Price") for each one
                     one-hundredth of a Preferred Share pursuant to the exercise
                     of a Right shall initially be $35.00 


                                          9

<PAGE>

                     and shall be subject to adjustment from time to time as
                     provided in Sections 11 and 13 hereof and shall be payable
                     in lawful money of the United States of America in
                     accordance with paragraph (c) below.

              (c)    Upon receipt of a Right Certificate representing
                     exercisable Rights, with the form of election to purchase
                     duly executed, accompanied by payment of the Purchase Price
                     for the shares to be purchased and an amount equal to any
                     applicable transfer tax required to be paid by the holder
                     of such Right Certificate in accordance with Section 9
                     hereof by certified check, cashier's check, bank draft or
                     money order payable to the order of the Company, the Rights
                     Agent shall thereupon promptly (i) (A) requisition from any
                     transfer agent for the Preferred Shares certificates for
                     the number of Preferred Shares to be purchased and the
                     Company hereby irrevocably authorizes its transfer agent to
                     comply with all such requests, or (B) if the Company, in
                     its sole discretion, shall have elected to deposit the
                     Preferred Shares issuable upon exercise of the Rights
                     hereunder into a depository, requisition from the
                     depositary agent depositary receipts representing such
                     number of one one-hundredths of a Preferred Share as are to
                     be purchased (in which case certificates for the Preferred
                     Shares represented by such receipts shall be deposited by
                     the transfer agent with the depositary agent) and the
                     Company hereby directs the depositary agent to comply with
                     such request, (ii) when appropriate, requisition from the
                     Company the amount of cash to be paid in lieu of issuance
                     of fractional shares in accordance with Section 14 hereof,
                     (iii) after receipt of such certificates or depositary
                     receipts, cause the same to be delivered to or upon the
                     order of the registered holder of such Right Certificate,
                     registered in such name or names as may be designated by
                     such holder and (iv) when appropriate, after receipt,
                     deliver such cash to or upon the order of the registered
                     holder of such Right Certificate.  In the event that the
                     Company is obligated to issue securities of the Company
                     other than Preferred Shares (including Common Shares) of
                     the Company pursuant to Section 11(a) hereof, the Company
                     will make all arrangements necessary so that such other
                     securities are available for distribution by the Rights
                     Agent, if and when appropriate.

                     In addition, in the case of an exercise of the Rights by a
                     holder pursuant to Section 11(a)(ii) hereof, the Rights
                     Agent shall return such Right Certificate to the registered
                     holder thereof after imprinting, stamping or otherwise
                     indicating thereon that the rights represented by such
                     Right Certificate no longer include the rights provided by
                     Section 11(a)(ii) hereof, and, if fewer than all the Rights
                     represented by such Right Certificate were so exercised,
                     the Rights Agent shall indicate on the Right Certificate
                     the number of Rights represented thereby which continue to
                     include the rights provided by Section 11(a)(ii) hereof.


                                          10

<PAGE>

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

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

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

SECTION 8.    CANCELLATION AND DESTRUCTION OF RIGHT CERTIFICATES.  All Right
              Certificates surrendered for the purpose of exercise, transfer,
              split up, combination or exchange shall, if surrendered to the
              Company or to any of its agents, be delivered to the Rights Agent
              for cancellation or in canceled form, or, if delivered or
              surrendered to the Rights Agent, shall be canceled by it, and no
              Right Certificates shall be issued in lieu thereof except as
              expressly permitted by any of the provisions of this Agreement. 
              The Company shall deliver to the Rights Agent for cancellation and
              retirement, and the Rights Agent shall so cancel and retire, any
              other Right Certificate purchased or acquired by the Company
              otherwise than upon the exercise thereof.  The Rights Agent shall
              deliver all canceled Right Certificates to the Company
              approximately one and one-half years after the cancellation date,
              or shall, at the written request of the Company, destroy such
              canceled Right Certificates, and in such case shall deliver a
              certificate of destruction thereof to the Company.  

SECTION 9.    AVAILABILITY OF PREFERRED SHARES.  The Company covenants and
              agrees that so long as the Preferred Shares (and, after the time a
              person becomes an Acquiring Person, Common Shares or any other
              securities) issuable upon the exercise of the Rights may be listed
              on any national securities exchange or quotation system, the
              Company shall use its best efforts to cause, from and after such
              time as the Rights become exercisable, all shares reserved for
              such issuance to be listed on such exchange or quotation system
              upon official notice of issuance upon such exercise.


                                          11

<PAGE>

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

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

              As soon as practicable after the Distribution Date, the Company
              shall use its best efforts to: 

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

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

SECTION 10.   PREFERRED SHARES RECORD DATE.  Each person in whose name any
              certificate for Preferred Shares or other securities is issued
              upon the exercise of Rights shall for all purposes be deemed to
              have become the holder of record of the Preferred Shares or other
              securities represented thereby on, and such certificate shall be
              dated, the date upon which the Right Certificate evidencing such
              Rights was duly surrendered with the forms of election and
              certification duly executed and payment of the Purchase Price (and
              any applicable transfer taxes) was made; PROVIDED, HOWEVER, that
              if the date of such surrender and payment is a date upon 


                                          12

<PAGE>

              which the Preferred Shares or other securities transfer books of
              the Company are closed, such person shall be deemed to have become
              the record holder of such shares on, and such certificate shall be
              dated, the next succeeding Business Day on which the Preferred
              Shares or other securities transfer books of the Company are open.
              Prior to the exercise of the Rights evidenced thereby, the holder
              of a Right Certificate, as such, shall not be entitled to any
              rights of a holder of Preferred Shares for which the Rights shall
              be exercisable, including, without limitation, the right to vote,
              to receive dividends or other distributions or to exercise any
              preemptive rights, and shall not be entitled to receive any notice
              of any proceedings of the Company, except as provided herein.

SECTION 11.   ADJUSTMENT OF PURCHASE PRICE, NUMBER OF SHARES OR NUMBER OF
              RIGHTS.  The Purchase Price, the number of Preferred Shares
              covered by each Right and the number of Rights outstanding are
              subject to adjustment from time to time as provided in this
              Section 11.

              (a)    

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


                                          13

<PAGE>

                            in addition to, and shall be made prior to any
                            adjustment required pursuant to Section 11(a)(ii)
                            hereof.

                     (ii)   Subject to Section 24 hereof and the provisions of
                            the next paragraph of this Section 11(a)(ii), in the
                            event any Person shall become an Acquiring Person,
                            each holder of a Right shall, for a period of 60
                            days after the later of such time any Person becomes
                            an Acquiring Person or the effective date of an
                            appropriate registration statement under the Act
                            pursuant to Section 9 hereof (PROVIDED, HOWEVER
                            that, if at any time prior to the expiration or
                            termination of the Rights there shall be a temporary
                            restraining order, a preliminary injunction, an
                            injunction, or temporary suspension by the Board of
                            Directors, or similar obstacle to exercise of the
                            Rights (the "Injunction") which prevents exercise of
                            the Rights, a new 60-day period shall commence on
                            the date the Injunction is removed), have a right to
                            receive, upon exercise thereof at a price equal to
                            the then current Purchase Price multiplied by the
                            number of one one-hundredths of a Preferred Share
                            for which a Right is then exercisable, in accordance
                            with the terms of this Agreement and in lieu of
                            Preferred Shares, such number of Common Shares as
                            shall equal the result obtained by (A) multiplying
                            the then current Purchase Price by the number of one
                            one-hundredths of a Preferred Share for which a
                            Right is then exercisable and dividing that product
                            by (B) 50% of the then current per share market
                            price of the Common Shares (determined pursuant to
                            Section 11(d) hereof) on the date such Person became
                            an Acquiring Person; PROVIDED, HOWEVER, that if the
                            transaction that would otherwise give rise to the
                            foregoing adjustment is also subject to the
                            provisions of Section 13 hereof, then only the
                            provisions of Section 13 hereof shall apply and no
                            adjustment shall be made pursuant to this
                            Section 11(a)(ii).  In the event that any Person
                            shall become an Acquiring Person and the Rights
                            shall then be outstanding, the Company shall not
                            take any action which would eliminate or diminish
                            the benefits intended to be afforded by the Rights.

                            Notwithstanding anything in this Agreement to the
                            contrary, from and after the time any Person becomes
                            an Acquiring Person, any Rights beneficially owned
                            by (i) such Acquiring Person or an Associate or
                            Affiliate of such Acquiring Person, (ii) a
                            transferee of such Acquiring Person (or of any such
                            Associate or Affiliate) who becomes a transferee
                            after the Acquiring Person became such, or (iii) a
                            transferee of such Acquiring Person (or of any such
                            Associate or Affiliate) who becomes a transferee
                            prior to or concurrently with the Acquiring Person's
                            becoming such and 


                                          14

<PAGE>

                            receives such Rights pursuant to either (A) a
                            transfer (whether or not for consideration) from the
                            Acquiring Person to holders of equity interests in
                            such Acquiring Person or to any Person with whom the
                            Acquiring Person has any continuing agreement,
                            arrangement or understanding regarding the
                            transferred Rights or (B) a transfer which the Board
                            of Directors of the Company has determined is part
                            of a plan, arrangement or understanding which has as
                            a primary purpose or effect the avoidance of this
                            Section 11(a)(ii), shall become null and void
                            without any further action and no holder of such
                            Rights shall have any rights whatsoever with respect
                            to such Rights, whether under any provision of this
                            Agreement or otherwise.  The Company shall use all
                            reasonable efforts to insure that the provisions of
                            this Section 11(a)(ii) and Section 4(b) hereof are
                            complied with, but shall have no liability to any
                            holder of Right Certificates or other Person as a
                            result of its failure to make any determinations
                            with respect to an Acquiring Person or its
                            Affiliates, Associates or transferees hereunder.  No
                            Right Certificate shall be issued at any time upon
                            the transfer of any Rights to an Acquiring Person
                            whose Rights would be void pursuant to the preceding
                            sentence or any Associate or Affiliate thereof or to
                            any nominee of such Acquiring Person, Associate or
                            Affiliate; and any Right Certificate delivered to
                            the Rights Agent for transfer to an Acquiring Person
                            whose Rights would be void pursuant to the preceding
                            sentence shall be canceled.

                     (iii)  In lieu of issuing Common Shares in accordance with
                            Section 11(a)(ii) hereof, the Company may, if a
                            majority of the Board of Directors then in office
                            determines that such action is necessary or
                            appropriate and not contrary to the interests of
                            holders of Rights, elect to (and, in the event that
                            the Board of Directors has not exercised the
                            exchange right contained in Section 24(c) hereof and
                            there are not sufficient treasury shares and
                            authorized but unissued Common Shares to permit the
                            exercise in full of the Rights in accordance with
                            the foregoing subparagraph (ii), the Company shall)
                            take all such action as may be necessary to
                            authorize, issue or pay, upon the exercise of the
                            Rights, cash (including by way of a reduction of the
                            Purchase Price), property, Common Shares, other
                            securities or any combination thereof having an
                            aggregate value equal to the value of the Common
                            Shares which otherwise would have been issuable
                            pursuant to Section 11(a)(ii) hereof, which
                            aggregate value shall be determined by a nationally
                            recognized investment banking firm selected by a
                            majority of the Board of Directors then in office. 
                            For purposes of the preceding sentence, the value of
                            the Common Shares shall be determined 


                                          15

<PAGE>

                            pursuant to Section 11(d) hereof.  Any such election
                            by the Board of Directors must be made within 60
                            days following the date on which the event described
                            in Section 11(a)(ii) hereof shall have occurred. 
                            Following the occurrence of the event described in
                            Section 11(a)(ii) hereof, a majority of the Board of
                            Directors then in office may suspend the
                            exercisability of the Rights for a period of up to
                            60 days following the date on which the event
                            described in Section 11(a)(ii) hereof shall have
                            occurred to the extent that such directors have not
                            determined whether to exercise their rights of
                            election under this Section 11(a)(iii).  In the
                            event of any such suspension, the Company shall
                            issue a public announcement stating that the
                            exercisability of the Rights has been temporarily
                            suspended.

              (b)    In case the Company shall fix a record date for the
                     issuance of rights, options or warrants to all holders of
                     Preferred Shares entitling them to subscribe for or
                     purchase Preferred Shares (or shares having the same
                     designations and the powers, preferences and rights, and
                     the qualifications, limitations and restrictions as the
                     Preferred Shares ("equivalent preferred shares")) or
                     securities convertible into Preferred Shares or equivalent
                     preferred shares at a price per Preferred Share or
                     equivalent preferred share (or having a conversion price
                     per share, if a security convertible into Preferred Shares
                     or equivalent preferred shares) less than the then current
                     per share market price of the Preferred Shares (as such
                     term is hereinafter defined) on such record date, the
                     Purchase Price to be in effect after such record date shall
                     be determined by multiplying the Purchase Price in effect
                     immediately prior to such record date by a fraction, the
                     numerator of which shall be the number of Preferred Shares
                     outstanding on such record date plus the number of
                     Preferred Shares which the aggregate offering price of the
                     total number of Preferred Shares and/or equivalent
                     preferred shares so to be offered (and/or the aggregate
                     initial conversion price of the convertible securities so
                     to be offered) would purchase at such current market price
                     and the denominator of which shall be the number of
                     Preferred Shares outstanding on such record date plus the
                     number of additional Preferred Shares and/or equivalent
                     preferred shares to be offered for subscription or purchase
                     (or into which the convertible securities so to be offered
                     are initially convertible); PROVIDED, HOWEVER, that in no
                     event shall the consideration to be paid upon the exercise
                     of one Right be less than the aggregate par value of the
                     shares of capital stock of the Company issuable upon
                     exercise of one Right.  In case such subscription price may
                     be paid in a consideration part or all of which shall be in
                     a form other than cash, the value of such consideration
                     shall be as determined in good faith by the Board of
                     Directors of the Company, whose determination shall be
                     described in a statement filed with the Rights Agent. 
                     Preferred Shares owned by or held for the account of the


                                          16

<PAGE>

                     Company shall not be deemed outstanding for the purpose of
                     any such computation.  Such adjustment shall be made
                     successively whenever such a record date is fixed; and in
                     the event that such rights, options or warrants are not so
                     issued, the Purchase Price shall be adjusted to be the
                     Purchase Price which would then be in effect if such record
                     date had not been fixed.

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

              (d)    

                     (i)    For the purpose of any computation hereunder, the
                            "current per share market price" of any security (a
                            "Security" for the purpose of this Section 11(d)(i))
                            on any date shall be deemed to be the average of the
                            daily closing prices per share of such Security for
                            the 30 consecutive Trading Days (as such term is
                            hereinafter defined) immediately prior to such date;
                            PROVIDED, HOWEVER, that in the event that the
                            current per share market price of the Security is
                            determined during a period following the
                            announcement by the issuer of such Security of (A) a
                            dividend or distribution on such Security payable in
                            shares of such Security or securities convertible
                            into such shares, or (B) any subdivision,
                            combination 


                                          17

<PAGE>

                            or reclassification of such Security or securities
                            convertible into such shares, or (C) any
                            subdivision, combination or reclassification of such
                            Security and prior to the expiration of 30 Trading
                            Days after the ex-dividend date for such dividend or
                            distribution, or the record date for such
                            subdivision, combination or reclassification, then,
                            and in each such case, the current per share market
                            price shall be appropriately adjusted to reflect the
                            current market price per share equivalent of such
                            Security.  The closing price for each day shall be
                            the last sale price, regular way, or, in case no
                            such sale takes place on such day, the average of
                            the closing bid and asked prices, regular way, in
                            either case as reported in the principal
                            consolidated transaction reporting system with
                            respect to securities listed or admitted to trading
                            on the New York Stock Exchange or, if the Security
                            is not listed or admitted to trading on the New York
                            Stock Exchange, as reported in the principal
                            consolidated transaction reporting system with
                            respect to securities listed on the principal
                            national securities exchange on which the Security
                            is listed or admitted to trading or as reported on
                            the Nasdaq National Market or, if the Security is
                            not listed or admitted to trading on any national
                            securities exchange or reported on the Nasdaq
                            National Market, the last quoted price or, if not so
                            quoted, the average of the high bid and low asked
                            prices in the over-the-counter market, as reported
                            by the National Association of Securities Dealers,
                            Inc. Automated Quotations System ("Nasdaq") or such
                            other system then in use, or, if on any such date
                            the Security is not quoted by any such organization,
                            the average of the closing bid and asked prices as
                            furnished by a professional market maker making a
                            market in the Security selected by the Board of
                            Directors of the Company or, if on any such date no
                            professional market maker is making a market in the
                            Security, the price as determined in good faith by
                            the Board of Directors.  The term "Trading Day"
                            shall mean a day on which the principal national
                            securities exchange on which the Security is listed
                            or admitted to trading is open for the transaction
                            of business or, if the Security is not listed or
                            admitted to trading on any national securities
                            exchange, a Business Day.

                     (ii)   For the purpose of any computation hereunder, the
                            "current per share market price" of the Preferred
                            Shares shall be determined in accordance with the
                            method set forth in Section 11(d)(i) hereof.  If the
                            Preferred Shares are not publicly traded, the
                            "current per share market price" of the Preferred
                            Shares shall be conclusively deemed to be the
                            current per share market price of the Common Shares
                            as determined pursuant to Section 11(d)(i) hereof
                            (appropriately adjusted to reflect any stock split,
                            stock dividend or similar transaction occurring
                            after the date hereof) multiplied by one 


                                          18

<PAGE>

                            hundred.  If neither the Common Shares nor the
                            Preferred Shares are publicly held or so listed or
                            traded, "current per share market price" shall mean
                            the fair value per share as determined in good faith
                            by the Board of Directors of the Company, whose
                            determination shall be described in a statement
                            filed with the Rights Agent.

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

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

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

              (h)    Unless the Company shall have exercised its election as 
                     provided in Section 11(i) hereof, upon each adjustment 
                     of the Purchase Price as a result of the calculations 
                     made in Section 11(b) and Section 11(c) hereof, each 
                     Right outstanding immediately prior to the making of 
                     such adjustment shall thereafter evidence the right to 
                     purchase, at the adjusted Purchase Price, that number of 
                     one one-hundredths of a Preferred Share (calculated to 
                     the nearest one one-millionth of a Preferred Share) 
                     obtained by (i) multiplying (x) the number of one 
                     one-hundredths of a Preferred 

                                          19

<PAGE>

                     Share covered by a Right immediately prior to this 
                     adjustment by (y) the Purchase Price in effect 
                     immediately prior to such adjustment of the Purchase 
                     Price and (ii) dividing the product so obtained by the 
                     Purchase Price in effect immediately after such 
                     adjustment of the Purchase Price.

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

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


                                          20

<PAGE>

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

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

              (m)    The Company covenants and agrees that, after the
                     Distribution Date, it will not, except as permitted by
                     Section 23 or Section 27 hereof, take (or permit any
                     Subsidiary to take) any action the purpose of which is to,
                     or if at the time such action is taken it is reasonably
                     foreseeable that the effect of such action is to,
                     materially diminish or eliminate the benefits intended to
                     be afforded by the Rights.  Any such action taken by the
                     Company during any period after any Person becomes an
                     Acquiring Person but prior to the Distribution Date shall
                     be null and void unless such action could be taken under
                     this Section 11(m) from and after the Distribution Date.

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

              (o)    In the event that at any time after the date of this
                     Agreement and prior to the Distribution Date, the Company
                     shall (i) declare or pay any dividend on the Common Shares
                     payable in Common Shares or (ii) effect a subdivision,
                     combination or consolidation of the Common Shares (by


                                          21

<PAGE>

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

              (p)    The exercise of Rights under Section 11(a)(ii) hereof shall
                     only result in the loss of rights under Section 11(a)(ii)
                     hereof to the extent so exercised and shall not otherwise
                     affect the rights represented by the Rights under this
                     Agreement, including the rights represented by Section 13
                     hereof.

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

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

              (a)    In the event that, following the Shares Acquisition Date
                     or, if a Transaction is proposed, the Distribution Date,
                     directly or indirectly (x) the Company shall consolidate
                     with, or merge with and into, any Interested Stockholder,
                     or if in such merger or consolidation all holders of Common
                     Stock are not treated alike, any other Person, (y) any
                     Interested Person, or if in such merger or consolidation
                     all holders of Common Stock are not treated alike, any
                     other Person shall consolidate with the Company, or merge
                     with and into the Company, and the Company shall be the
                     continuing or surviving corporation of such merger (other
                     than, in the case of either transaction described in (x) or
                     (y), a merger or consolidation which would result in all of
                     the voting power represented by the securities 


                                          22

<PAGE>

                     of the Company outstanding immediately prior thereto
                     continuing to represent (either by remaining outstanding or
                     by being converted into securities of the surviving entity)
                     all of the voting power represented by the securities of
                     the Company or such surviving entity outstanding
                     immediately after such merger or consolidation and the
                     holders of such securities not having changed as a result
                     of such merger or consolidation), or (z) the Company shall
                     sell, mortgage or otherwise transfer (or one or more of its
                     subsidiaries shall sell, mortgage or otherwise transfer),
                     in one or more transactions, assets or earning power
                     aggregating more than 50% of the assets or earning power of
                     the Company and its subsidiaries (taken as a whole) to any
                     Interested Stockholder or Stockholders, or if in such
                     transaction all holders of Common Stock are not treated
                     alike, any other Person, (other than the Company or any
                     Subsidiary of the Company in one or more transactions each
                     of which individually and the aggregate does not violate
                     Section 13(d) hereof) then, and in each such case, proper
                     provision shall be made so that (i) each holder of a Right,
                     subject to Section 11(a)(ii) hereof, shall have the right
                     to receive, upon the exercise thereof at a price equal to
                     the then current Purchase Price multiplied by the number of
                     one one-hundredths of a Preferred Share for which a Right
                     is then exercisable in accordance with the terms of this
                     Agreement and in lieu of Preferred Shares, such number of
                     freely tradeable Common Shares of the Principal Party (as
                     such term is hereinafter defined), free and clear of liens,
                     rights of call or first refusal, encumbrances or other
                     adverse claims, as shall be equal to the result obtained by
                     (A) multiplying the then current Purchase Price by the
                     number of one one-hundredths of a Preferred Share for which
                     a Right is then exercisable (without taking into account
                     any adjustment previously made pursuant to
                     Section 11(a)(ii) hereof) and dividing that product by
                     (B) 50% of the then current per share market price of the
                     Common Shares of such Principal Party (determined pursuant
                     to Section 11(d) hereof) on the date of consummation of
                     such consolidation, merger, sale or transfer; (ii) such
                     Principal Party shall thereafter be liable for, and shall
                     assume, by virtue of such consolidation, merger, sale or
                     transfer, all the obligations and duties of the Company
                     pursuant to this Agreement; (iii) the term "Company" shall
                     thereafter be deemed to refer to such Principal Party, it
                     being specifically intended that the provisions of
                     Section 11 hereof shall apply to such Principal Party; and
                     (iv) such Principal Party shall take such steps (including,
                     but not limited to, the reservation of a sufficient number
                     of shares of its Common Shares in accordance with Section 9
                     hereof) in connection with such consummation as may be
                     necessary to assure that the provisions hereof shall
                     thereafter be applicable, as nearly as reasonably may be,
                     in relation to its Common Shares thereafter deliverable
                     upon the exercise of the Rights.


                                          23

<PAGE>

              (b)    "Principal Party" shall mean:

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

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

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

              (c)    The Company shall not consummate any such consolidation,
                     merger, sale or transfer unless the Principal Party shall
                     have a sufficient number of authorized Common Shares that
                     have not been issued or reserved for issuance to permit the
                     exercise in full of the Rights in accordance with this
                     Section 13 and unless prior thereto the Company and each
                     Principal Party and each other Person who may become a
                     Principal Party as a result of such consolidation, merger,
                     sale or transfer shall have (i) executed and delivered to
                     the Rights Agent a supplemental agreement providing for the
                     terms set forth in paragraphs (a) and (b) of this
                     Section 13 and (ii) prepared, filed and had declared and
                     remain effective a registration statement under the Act on
                     the appropriate form with respect to the Rights and the
                     securities exercisable upon exercise of the Rights and
                     further 


                                          24

<PAGE>

                     providing that, as soon as practicable after the date of
                     any consolidation, merger, sale or transfer of assets
                     mentioned in paragraph (a) of this Section 13, the
                     Principal Party at its own expense will:

                     (i)    cause the registration statement under the Act with
                            respect to the Rights and the securities purchasable
                            upon exercise of the Rights on an appropriate form
                            to remain effective (with a prospectus at all times
                            meeting the requirements of the Act) until the Final
                            Expiration Date; 

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

                     (iii)  list the Rights and the securities purchasable upon
                            exercise of the Rights on each national securities
                            exchange on which the Common Shares were listed
                            prior to the consummation of such consolidation,
                            merger, sale or transfer of assets or on the Nasdaq
                            National Market if the Common Shares were listed on
                            the Nasdaq National Market or, if the Common Shares
                            were not listed on a national securities exchange or
                            the Nasdaq National Market prior to the consummation
                            of the consolidation, merger, sale or transfer of
                            assets, on a national securities exchange or the
                            Nasdaq National Market; and

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

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

              (d)    After the Distribution Date, the Company covenants and
                     agrees that it shall not (i) consolidate with, (ii) merge
                     with or into, or (iii) sell or transfer to, in one or more
                     transactions, assets or earning power aggregating more than
                     50% of the assets or earning power of the Company and its
                     subsidiaries taken as a whole, any other Person (other than
                     a Subsidiary of the Company in a transaction which does not
                     violate Section 11(m) hereof), if (x) at the time of or
                     after such consolidation, merger or sale there are any
                     charter or bylaw provisions or any rights, warrants or
                     other instruments or securities outstanding, agreements in
                     effect or any other action taken which would diminish or
                     otherwise eliminate the benefits intended to be afforded by
                     the Rights or (y) prior to, simultaneously with or
                     immediately after such consolidation, merger or sale, the
                     stockholders of the Person who constitutes, or would
                     constitute, the "Principal Party" 


                                          25

<PAGE>

                     for purposes of Section 13(a) hereof shall have received a
                     distribution of Rights previously owned by such Person or
                     any of its Affiliates and Associates.  The Company shall
                     not consummate any such consolidation, merger, sale or
                     transfer unless prior thereto the Company and such other
                     Person shall have executed and delivered to the Rights
                     Agent a supplemental agreement evidencing compliance with
                     this Section 13(d).

SECTION 14.   FRACTIONAL RIGHTS AND FRACTIONAL SHARES.  

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

              (b)    The Company shall not be required to issue fractions of
                     Preferred Shares (other than fractions which are integral
                     multiples of one one-hundredth of a Preferred Share) upon
                     exercise of the Rights or to distribute certificates which
                     evidence fractional Preferred Shares (other than fractions
                     which are integral multiples of one one-hundredth of a
                     Preferred Share).  Fractions of Preferred Shares in
                     integral multiples of one one-hundredth of a 


                                          26

<PAGE>

                     Preferred Share may, at the election of the Company, be
                     evidenced by depositary receipts; PROVIDED, HOWEVER, that
                     holders of such depositary receipts shall have all of the
                     designations and the powers, preferences and rights, and
                     the qualifications, limitations and restrictions to which
                     they are entitled as beneficial owners of the Preferred
                     Shares represented by such depositary receipts.  In lieu of
                     fractional Preferred Shares that are not integral multiples
                     of one one-hundredth of a Preferred Share, the Company
                     shall pay to the registered holders of Right Certificates
                     at the time such Rights are exercised as herein provided an
                     amount in cash equal to the same fraction of the current
                     market value of one Preferred Share.  For the purposes of
                     this Section 14(b), the current market value of a Preferred
                     Share shall be the current per share market price of the
                     Preferred Shares (as determined pursuant to the second
                     sentence of Section 11(d)(i) hereof) for the Trading Day
                     immediately prior to the date of such exercise (or, if not
                     publicly traded, in accordance with Section 11(d)(ii)
                     hereof).

              (c)    Following the occurrence of one of the transactions or
                     events specified in Section 11 hereof giving rise to the
                     right to receive Common Shares, capital stock equivalents
                     (other than Preferred Shares) or other securities upon the
                     exercise of a Right, the Company shall not be required to
                     issue fractions of Common Shares or units of such Common
                     Shares, capital stock equivalents or other securities upon
                     exercise of the Rights or to distribute certificates which
                     evidence fractional Common Shares, capital stock
                     equivalents or other securities.  In lieu of fractional
                     Common Shares, capital stock equivalents or other
                     securities, the Company shall pay to the registered holders
                     of Right Certificates at the time such Rights are exercised
                     as herein provided an amount in cash equal to the same
                     fraction of the current market value of one Common Share or
                     unit of such Common Shares, capital stock equivalents or
                     other securities.  For purposes of this Section 14(c), the
                     current market value shall be the current per share market
                     price (as determined pursuant to Section 11(d)(i) hereof)
                     for the Trading Day immediately prior to the date of such
                     exercise and, if such capital stock equivalent is not
                     traded, each such capital stock equivalent shall have the
                     value of one one-hundredth of a Preferred Share.

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

SECTION 15.   RIGHTS OF ACTION.  All rights of action in respect of this
              Agreement, excepting the rights of action given to the Rights
              Agent under Sections 18 and 20 hereof, are vested in the
              respective registered holders of the Right Certificates (and,
              prior to the Distribution Date, the registered holders of the
              Common Shares) and any registered holder of any Right Certificate
              (or, prior to the Distribution Date, of the Common Shares),
              without the consent of the Rights Agent or of the holder of any 


                                          27

<PAGE>

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

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

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

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

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

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


                                          28

<PAGE>

              provided in Section 25 hereof), or to receive dividends or
              subscription rights, or otherwise, until the Right or Rights
              evidenced by such Right Certificate shall have been exercised in
              accordance with the provisions hereof.

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

              The Rights Agent shall be protected and shall incur no liability
              for, or in respect of any action taken, suffered or omitted by it
              in connection with, its administration of this Agreement in
              reliance upon any Right Certificate or certificate for the
              Preferred Shares or Common Shares or for other securities of the
              Company, instrument of assignment or transfer, power of attorney,
              endorsement, affidavit, letter, notice, direction, consent,
              certificate, statement, or other paper or document believed by it
              to be genuine and to be signed, executed and, where necessary,
              verified or acknowledged, by the proper person or persons, or
              otherwise upon the advice of counsel as set forth in Section 20
              hereof.  In no case will the Rights Agent be liable for special,
              indirect, incidental or consequential or consequential loss or
              damage at any kind whatsoever (including but not limited to lost
              profits), even if the Rights Agent has been advised of such loss
              or damage.

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


                                          29

<PAGE>

              and in case at that time any of the Right Certificates shall not
              have been countersigned, any successor Rights Agent may
              countersign such Right Certificates either in the name of the
              predecessor Rights Agent or in the name of the successor Rights
              Agent; and in all such cases such Right Certificates shall have
              the full force provided in the Right Certificates and in this
              Agreement.

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

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

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

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

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

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


                                          30

<PAGE>

                     the same, but all such statements and recitals are and
                     shall be deemed to have been made by the Company only.

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

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

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


                                          31

<PAGE>

                     indicated in such application unless any such officer shall
                     have consented in writing to an earlier date) unless, prior
                     to taking or omitting any such action, the Rights Agent has
                     received written instructions in response to such
                     application specifying the action to be taken or omitted.

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

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

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

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

SECTION 21.   CHANGE OF RIGHTS AGENT.  The Rights Agent or any successor Rights
              Agent may resign and be discharged from its duties under this
              Agreement upon 30 days' notice in writing mailed to the Company
              and to each transfer agent for the Common Shares or Preferred
              Shares by registered or certified mail, and to the holders of the
              Right Certificates by first-class mail.  The Company may remove
              the Rights Agent or any successor Rights Agent upon 30 days'
              notice in writing, mailed to the Rights Agent or successor Rights
              Agent, as the case may be, and to each transfer agent for the
              Common Shares or Preferred Shares by registered or certified mail,
              and to the holders of the Right Certificates by first-class mail. 
              If the Rights Agent shall resign or be removed or shall otherwise
              become incapable of acting, the Company shall appoint a successor
              to the Rights Agent.  If the 


                                          32

<PAGE>

              Company shall fail to make such appointment within a period of 30
              days after giving notice of such removal or after it has been
              notified in writing of such resignation or incapacity by the
              resigning or incapacitated Rights Agent or by the holder of a
              Right Certificate (who shall, with such notice, submit his Right
              Certificate for inspection by the Company), then the registered
              holder of any Right Certificate may apply to any court of
              competent jurisdiction for the appointment of a new Rights Agent. 
              Any successor Rights Agent, whether appointed by the Company or by
              such a court, shall be either (a) a corporation business trust or
              limited liability company organized and doing business under the
              laws of the United States or of any other state of the United
              States which is authorized under such laws to exercise corporate
              trust or stock transfer powers and is subject to supervision or
              examination by federal or state authority and which has at the
              time of its appointment as Rights Agent a combined capital and
              surplus of at least $50 million or (b) a direct or indirect wholly
              owned subsidiary of such an entity or its wholly-owning parent. 
              After appointment, the successor Rights Agent shall be vested with
              the same powers, rights, duties and responsibilities as if it had
              been originally named as Rights Agent without further act or deed;
              but the predecessor Rights Agent shall deliver and transfer to the
              successor Rights Agent any property at the time held by it
              hereunder, and execute and deliver any further assurance,
              conveyance, act or deed necessary for the purpose.  Not later than
              the effective date of any such appointment the Company shall file
              notice thereof in writing with the predecessor Rights Agent and
              each transfer agent for the Common Shares or Preferred Shares, and
              mail a notice thereof in writing to the registered holders of the
              Right Certificates.  Failure to give any notice provided for in
              this Section 21, however, or any defect therein, shall not affect
              the legality or validity of the resignation or removal of the
              Rights Agent or the appointment of the successor Rights Agent, as
              the case may be.

SECTION 22.   ISSUANCE OF NEW RIGHT CERTIFICATES.  Notwithstanding any of the
              provisions of this Agreement or of the Rights to the contrary, the
              Company may, at its option, issue new Right Certificates
              evidencing Rights in such form as may be approved by its Board of
              Directors to reflect any adjustment or change in the Purchase
              Price and the number or kind or class of shares or other
              securities or property purchasable under the Right Certificates
              made in accordance with the provisions of this Agreement.  In
              addition, in connection with the issuance or sale of Common Shares
              following the Distribution Date and prior to the earlier of the
              Redemption Date and the Final Expiration Date, 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 in existence prior to the Distribution Date, or upon
              the exercise, conversion or exchange of securities, notes or
              debentures issued by the Company and in existence prior to the
              Distribution Date, and (b) may, in any other case, if deemed
              necessary or appropriate by the Board of Directors of the Company,
              issue Right Certificates representing the appropriate number of
              Rights in connection with such issuance or sale; PROVIDED,
              HOWEVER, that (i) the Company shall not be obligated to issue any


                                          33

<PAGE>

              such Right Certificates if, and to the extent that, the Company
              shall be advised by counsel that such issuance would create a
              significant risk of material adverse tax consequences to the
              Company or the Person to whom such Right Certificate would be
              issued, and (ii) no Right Certificate shall be issued if, and to
              the extent that, appropriate adjustment shall otherwise have been
              made in lieu of the issuance thereof.

SECTION 23.   REDEMPTION. 

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

              (b)    

                     (i)    The Board of Directors of the Company may, at its
                            option, at any time prior to the earlier of such
                            time as any Person becoming an Acquiring Person
                            or the Final Expiration Date, redeem all but not
                            less than all of the then outstanding Rights at a
                            redemption price of $.01 per Right, appropriately
                            adjusted to reflect any stock split, stock dividend
                            or similar transaction occurring after the date
                            hereof (such redemption price being hereinafter
                            referred to as the "Redemption Price"), and the
                            Company may, at its option, pay the Redemption Price
                            in Common Shares (based on the "current per-share
                            market price," as such term is defined in
                            Section 11(d) hereof, of the Common Shares at the
                            time of redemption), cash or any other form of
                            consideration deemed appropriate by the Board of
                            Directors.  The redemption of the Rights by the
                            Board of Directors may be made effective at such
                            time, on such basis and subject to such conditions
                            as the Board of Directors in its sole discretion may
                            establish.  Notwithstanding anything contained in
                            this Agreement to the contrary, the Rights shall not
                            be exercisable pursuant to Section 11(a)(ii) hereof
                            prior to the expiration or termination of the
                            Company's right of redemption under this Section
                            23(b)(i).

                     (ii)   In addition, the Board of Directors of the Company
                            may, at its option, at any time after the time a
                            Person becomes an Acquiring Person and the
                            expiration of any period during which the holder of
                            Rights may exercise the rights under Section
                            11(a)(ii) hereof but prior to any event described in
                            clause (x), (y) or (z) of the first sentence of
                            Section 13 hereof, redeem all but not less than all
                            of the then outstanding Rights at the Redemption
                            Price (x) in connection with any merger,
                            consolidation or sale or other transfer (in one
                            transaction or in a series of related transactions)
                            of assets or earning power aggregating 50% or more
                            of the assets or earning power of the Company and
                            its subsidiaries (taken as a whole) in 


                                          34

<PAGE>

                            which all holders of Common Shares are treated alike
                            and not involving (other than as a holder of Common
                            Shares being treated like all other such holders) an
                            Interested Stockholder or a Transaction Person or
                            (y)(A) if and for so long as the Acquiring Person is
                            not thereafter the Beneficial Owner of 20% or more
                            of the then outstanding Common Shares, and (B) at
                            the time of redemption no other Persons are
                            Acquiring Persons.

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

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


                                          35

<PAGE>

SECTION 24.   EXCHANGE.

              (a)    The Board of Directors of the Company may, at its option,
                     at any time after any Person becomes an Acquiring Person,
                     exchange all or part of the then outstanding and
                     exercisable Rights (which shall not include Rights that
                     have become void pursuant to the provisions of
                     Section 11(a)(ii) hereof) for Common Shares at an exchange
                     ratio of one Common Share per Right, appropriately adjusted
                     to reflect any stock split, stock dividend or similar
                     transaction occurring after the date hereof (such exchange
                     ratio being hereinafter referred to as the "Exchange
                     Ratio").  Notwithstanding the foregoing, the Board of
                     Directors shall not be empowered to effect such exchange at
                     any time after any Person (other than the Company, any
                     Subsidiary of the Company, any employee benefit plan of the
                     Company or any such Subsidiary, or any entity holding
                     Common Shares for or pursuant to the terms of any such
                     plan), together with all Affiliates and Associates of such
                     Person, becomes the Beneficial Owner of 50% or more of the
                     Common Shares then outstanding.

              (b)    Immediately upon the action of the Board of Directors of
                     the Company ordering the exchange of any Rights pursuant to
                     Section 24(a) hereof and without any further action and
                     without any notice, the right to exercise such Rights shall
                     terminate and the only right thereafter of a holder of such
                     Rights shall be to receive that number of Common Shares
                     equal to the number of such Rights held by such holder
                     multiplied by the Exchange Ratio.  The Company shall
                     promptly give public notice of any such exchange; PROVIDED,
                     HOWEVER, that the failure to give, or any defect in, such
                     notice shall not affect the validity of such exchange.  The
                     Company promptly shall mail a notice of any such exchange
                     to all of the holders of such Rights at their last
                     addresses as they appear upon the registry books of the
                     Rights Agent; PROVIDED, HOWEVER, that the failure to give,
                     or any defect in, such notice shall not affect the validity
                     of such exchange.  Any notice which is mailed in the manner
                     herein provided shall be deemed given, whether or not the
                     holder receives the notice.  Each such notice of exchange
                     will state the method by which the exchange of the Common
                     Shares for Rights will be effected and, in the event of any
                     partial exchange, the number of Rights which will be
                     exchanged.  Any partial exchange shall be effected pro rata
                     based on the number of Rights (other than Rights which have
                     become void pursuant to the provisions of Section 11(a)(ii)
                     hereof) held by each holder of Rights.

              (c)    In lieu of issuing Common Shares in accordance with Section
                     24(a) hereof, the Company may, if a majority of the Board
                     of Directors then in office determines that such action is
                     necessary or appropriate and not contrary to the interests
                     of the holders of Rights, elect to (and, in the event that
                     there are not sufficient treasury shares and authorized but
                     unissued 


                                          36

<PAGE>

                     Common Shares to permit any exchange of the Rights in
                     accordance with Section 24(a) hereof, the Company shall)
                     take all such action as may be necessary to authorize,
                     issue or pay, upon the exchange of the Rights, cash
                     (including by way of a reduction of the Purchase Price),
                     property, Common Shares, other securities or any
                     combination thereof having an aggregate value equal to the
                     value of the Common Shares which otherwise would have been
                     issuable pursuant to Section 24(a) hereof, which aggregate
                     value shall be determined by a nationally recognized
                     investment banking firm selected by a majority of the Board
                     of Directors then in office.  For purposes of the preceding
                     sentence, the value of the Common Shares shall be
                     determined pursuant to Section 11(d) hereof.  Any election
                     pursuant to this Section 24(c) by the Board of Directors
                     must be made within 60 days following the date on which the
                     event described in Section 11(a)(ii) hereof shall have
                     occurred.  Following the occurrence on the event described
                     in Section 11(a)(ii) hereof, a majority of the Board of
                     Directors then in office may suspend the exercisability of
                     the Rights for a period of up to 60 days following the date
                     on which the event described in Section 11(a)(ii) hereof
                     shall have occurred to the extent that such directors have
                     not determined whether to exercise their rights of election
                     under this Section 24(c).  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.

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

              (e)    The Company shall not be required to issue fractions of
                     Preferred Shares (other than fractions which are integral
                     multiples of one one-hundredth of a Preferred Share) upon
                     exchange of the Rights or to distribute certificates which
                     evidence fractional Preferred Shares (other than fractions
                     which are integral multiples of one one-hundredth of a
                     Preferred Share).  Fractions of Preferred Shares in
                     integral multiples of one one-hundredth of a Preferred
                     Share may, at the election of the Company, be evidenced by
                     depositary receipts; PROVIDED, HOWEVER, that holders of
                     such depositary receipts shall have all of the designations
                     and the powers, preferences and 


                                          37

<PAGE>

                     rights, and the qualifications, limitations and
                     restrictions to which they are entitled as beneficial
                     owners of the Preferred Shares represented by such
                     depositary receipts.  In lieu of fractional Preferred
                     Shares that are not integral multiples of one one-hundredth
                     of a Preferred Share, the Company shall pay to the
                     registered holders of Right Certificates at the time such
                     Rights are exercised as herein provided an amount in cash
                     equal to the same fraction of the current market value of
                     one Preferred Share.  For the purposes of this
                     Section 24(e), the current market value of a Preferred
                     Share shall be one hundred (100) times the closing price of
                     a Common Share (as determined pursuant to the second
                     sentence of Section 11(d)(i) hereof) for the Trading Day
                     immediately after  the date of the first public
                     announcement by the Company that an exchange is to be
                     effected pursuant to this Section 24.

SECTION 25.   NOTICE OF CERTAIN EVENTS.  

              (a)    In case the Company shall propose (i) to pay any dividend
                     payable in stock of any class to the holders of its
                     Preferred Shares or to make any other distribution to the
                     holders of its Preferred Shares (other than a regular
                     quarterly cash dividend), (ii) to offer to the holders of
                     its Preferred Shares rights or warrants to subscribe for or
                     to purchase any additional Preferred Shares or shares of
                     stock of any class or any other securities, rights or
                     options, (iii) to effect any reclassification of its
                     Preferred Shares (other than a reclassification involving
                     only the subdivision of outstanding Preferred Shares),
                     (iv) to effect any consolidation or merger into or with, or
                     to effect any sale or other transfer (or to permit one or
                     more of its Subsidiaries to effect any sale or other
                     transfer), in one or more transactions, of 50% or more of
                     the assets or earning power of the Company and its
                     Subsidiaries (taken as a whole), to any other Person,
                     (v) to effect the liquidation, dissolution or winding up of
                     the Company, or (vi) to declare or pay any dividend on the
                     Common Shares payable in Common Shares or to effect a
                     subdivision, combination or consolidation of the Common
                     Shares (by reclassification or otherwise than by payment of
                     dividends in Common Shares), then, in each such case, the
                     Company shall give to each holder of a Right Certificate,
                     in accordance with Section 26 hereof, a notice of such
                     proposed action, which shall specify the record date for
                     the purpose of such stock dividend, or distribution of
                     rights or warrants, or the date on which such
                     reclassification, consolidation, merger, sale, transfer,
                     liquidation, dissolution, or winding up is to take place
                     and the date of participation therein by the holders of the
                     Common Shares and/or the Preferred Shares, if any such date
                     is to be fixed, and such notice shall be so given in the
                     case of any action covered by clause (i) or (ii) above at
                     least 10 days prior to the record date for determining
                     holders of the Preferred Shares for purposes of such
                     action, and in the case of any such other action, at least
                     10 days prior to the date 


                                          38

<PAGE>

                     of the taking of such proposed action or the date of
                     participation therein by the holders of the Common Shares
                     and/or the Preferred Shares, whichever shall be the
                     earlier.

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

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

                            CV Therapeutics, Inc.
                            3172 Porter Drive
                            Palo Alto, California 94304
                            Attention:  Chief Financial Officer


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

                            Norwest Bank Minnesota, N.A.
                            161 North Concord Exchange
                            South St. Paul, Minnesota 55075-0738
                            Attention: Manager, Administration
                                      --------------------------

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

SECTION 27.   SUPPLEMENTS AND AMENDMENTS.  Prior to the Distribution Date, the
              Company and the Rights Agent shall, if the Company so directs,
              supplement or amend any provision of this Agreement without the
              approval of any holders of the Rights.  From and after the
              Distribution Date, the Company and the Rights Agent shall, if the
              Company so directs, from time to time supplement or amend any
              provision of this Agreement without the approval of any holders of
              Right Certificates in order 


                                          39

<PAGE>

              to (i) cure any ambiguity, (ii) correct or supplement any
              provision contained herein which may be defective or inconsistent
              with any other provisions herein, or (iii) change any other
              provisions with respect to the Rights which the Company may deem
              necessary or desirable; PROVIDED, HOWEVER, that no such supplement
              or amendment shall be made which would adversely affect the
              interests of the holders of Rights (other than the interests of an
              Acquiring Person or its Affiliates or Associates).  Any supplement
              or amendment adopted during any period after any Person has become
              an Acquiring Person but prior to the Distribution Date shall
              become null and void unless such supplement or amendment could
              have been adopted by the Company from and after the Distribution
              Date.  Any such supplement or amendment shall be evidenced by a
              writing signed by the Company and the Rights Agent.  Upon delivery
              of a certificate from an appropriate officer of the Company which
              states that the proposed supplement or amendment is in compliance
              with the terms of this Section 27, the Rights Agent shall execute
              such supplement or amendment unless the Rights Agent shall have
              determined in good faith that such supplement or amendment would
              adversely affect its interest under this Agreement.  Prior to the
              Distribution Date, the interests of the holders of Rights shall be
              deemed coincident with the interests of the holders of Common
              Shares.  

SECTION 28.   DETERMINATION AND ACTIONS BY THE BOARD OF DIRECTORS, ETC.  For all
              purposes of this Agreement, any calculation of the number of
              Common Shares outstanding at any particular time, including for
              purposes of determining the particular percentage of such
              outstanding Common Shares or any other securities of which any
              Person is the Beneficial Owner, shall be made in accordance with
              the last sentence of Rule 13d-3(d)(1)(i) of the General Rules and
              Regulations under the Exchange Act as in effect on the date of
              this Agreement.  The Board of Directors of the Company shall have
              the exclusive power and authority to administer this Agreement and
              to exercise all rights and powers specifically granted to the
              Board, or the Company, or as may be necessary or advisable in the
              administration of this Agreement, including without limitation,
              the right and power to (i) interpret the provisions of this
              Agreement, and (ii) make all determinations deemed necessary or
              advisable for the administration of this Agreement (including a
              determination to redeem or not redeem the Rights or to amend the
              Agreement).  All such actions, calculations, interpretations and
              determinations (including, for purposes of clause (y) below, all
              omissions with respect to the foregoing) which are done or made by
              the Board in good faith, shall (x) be final, conclusive and
              binding on the Rights Agent and the holders of the Rights, and (y)
              not subject the Board to any liability to the holders of the
              Rights.

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


                                          40

<PAGE>

SECTION 30.   BENEFITS OF THIS AGREEMENT.  Nothing in this Agreement shall be
              construed to give to any person or corporation other than the
              Company, the Rights Agent and the registered holders of the Right
              Certificates (and, prior to the Distribution Date, the Common
              Shares) any legal or equitable right, remedy or claim under this
              Agreement; but this Agreement shall be for the sole and exclusive
              benefit of the Company, the Rights Agent and the registered
              holders of the Right Certificates (and, prior to the Distribution
              Date, the Common Shares).

SECTION 31.   SEVERABILITY.  If any term, provision, covenant or restriction of
              this Agreement is held by a court of competent jurisdiction or
              other authority to be invalid, void or unenforceable, the
              remainder of the terms, provisions, covenants and restrictions of
              this Agreement shall remain in full force and effect and shall in
              no way be affected, impaired or invalidated.

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

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

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


                                          41

<PAGE>

       IN WITNESS WHEREOF, parties whereto have caused this Agreement to be duly
executed, all as of the day and year first above written.

ATTEST:                                   CV THERAPEUTICS, INC.

/s/ Alan C. Mendelson                     /s/ Louis G. Lange   
- ------------------------------            ---------------------------------
Alan C. Mendelson                         Louis G. Lange
Secretary                                 Chairman of the Board and Chief
                                          Executive Officer

                     


ATTEST:                                   NORWEST BANK MINNESOTA, N.A.

By: /s/ Nancy Rosengren                   By: /s/ Beverly Robinson              
   ---------------------------               ------------------------------

Print Name: Nancy Rosengren               Print Name:  Beverly Robinson
           -------------------                       ----------------------

Title:  Vice President                    Title:  Account Manager
      ------------------------                  ---------------------------



                                          42

<PAGE>

                             CERTIFICATE OF DESIGNATION
                                          
                                         OF
                                          
                   SERIES A JUNIOR PARTICIPATING PREFERRED STOCK
                                          
                                         OF
                                          
                               CV THERAPEUTICS, INC.
                                          
                          (Pursuant to Section 151 of the
                                          
                         Delaware General Corporation Law)
                                          
                          (EXHIBIT A TO RIGHTS AGREEMENT)
                                          
                                          
       CV THERAPEUTICS, INC., a corporation organized and existing under the
General Corporation Law of the State of Delaware (hereinafter called the
"Company"), hereby certifies that the following resolution was adopted by the
Board of Directors of the Corporation as required by Section 151 of the General
Corporation Law at a meeting duly called and held on February 2, 1999


              RESOLVED, that pursuant to the authority granted to and
              vested in the Board of Directors of the Company in
              accordance with the provisions of its Amended and Restated
              Certificate of Incorporation, the Board of Directors hereby
              creates a series of Preferred Stock, par value $.001 per
              share, of the Company and hereby states the designation and
              number of shares, and fixes the relative designations and
              the powers, preferences and rights, and the qualifications,
              limitations and restrictions thereof (in addition to the
              provisions set forth in the Certificate of Incorporation of
              the Company, which are applicable to the Preferred Stock of
              all classes and series), as follows:


              Series A Junior Participating Preferred Stock:


     SECTION 1.     DESIGNATION AND AMOUNT.  Three Hundred Thousand (300,000) 
shares of Preferred Stock, $ .001 par value, are designated "Series A Junior 
Participating Preferred Stock" with the designations and the powers, 
preferences and rights, and the qualifications, limitations and restrictions 
specified herein (the "Junior Preferred Stock").  Such number of shares may 
be increased or decreased by resolution of the Board of Directors; PROVIDED, 
that no decrease shall reduce the number of shares of Junior Preferred Stock 
to a number less than the number of shares then outstanding plus the number 
of shares reserved for issuance upon the exercise of 

                                         A-1

<PAGE>

outstanding options, rights or warrants or upon the conversion of any
outstanding securities issued by the Company convertible into Junior Preferred
Stock.


     SECTION 2.     DIVIDENDS AND DISTRIBUTIONS.


            (A)     Subject to the rights of the holders of any shares of any
series of Preferred Stock (or any similar stock) ranking prior and superior to
the Junior Preferred Stock with respect to dividends, the holders of shares of
Junior Preferred Stock, in preference to the holders of Common Stock, par value
$.001 per share (the "Common Stock"), of the Company, and of any other junior
stock, shall be entitled to receive, when, as and if declared by the Board of
Directors out of funds legally available for the purpose, quarterly dividends
payable in cash on the first day of April, July, October and January 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 Junior Preferred Stock, in an
amount per share (rounded to the nearest cent) equal to the greater of (a) $l.00
or (b) subject to the provision for adjustment hereinafter set forth, 100 times
the aggregate per share amount of all cash dividends, and 100 times the
aggregate per share amount (payable in kind) of all non-cash dividends or other
distributions, other than a dividend payable in shares of Common Stock or a
subdivision of the outstanding shares of Common Stock (by reclassification or
otherwise), declared on the Common Stock since the immediately preceding
Quarterly Dividend Payment Date or, with respect to the first Quarterly Dividend
Payment Date, since the first issuance of any share or fraction of a share of
Junior Preferred Stock.  In the event the Company shall at any time declare or
pay any dividend on the Common Stock payable in shares of Common Stock, or
effect a subdivision or combination or consolidation of the outstanding shares
of Common Stock (by reclassification or otherwise than by payment of a dividend
in shares of Common Stock) into a greater or lesser number of shares of Common
Stock, then in each such case the amount to which holders of shares of Junior
Preferred Stock were entitled immediately prior to such event under clause (b)
of the preceding sentence shall be adjusted by multiplying such amount by a
fraction, the numerator of which is the number of shares of Common Stock
outstanding immediately after such event and the denominator of which is the
number of shares of Common Stock that were outstanding immediately prior to such
event.


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


            (C)     Dividends shall begin to accrue and be cumulative on
outstanding shares of Junior Preferred Stock from the Quarterly Dividend Payment
Date next preceding the date of issue of such shares, unless the date of issue
of such shares is prior to the record date for the first Quarterly Dividend
Payment Date, in which case dividends on such shares shall begin to accrue from
the date of issue of such shares, or unless the date of issue is a Quarterly
Dividend Payment Date or is a date after the record date for the determination
of holders of shares of Junior 


                                         A-2

<PAGE>

Preferred Stock entitled to receive a quarterly dividend and before such
Quarterly Dividend Payment Date, in either of which events such dividends shall
begin to accrue and be cumulative from such Quarterly Dividend Payment Date. 
Accrued but unpaid dividends shall not bear interest.  Dividends paid on the
shares of Junior 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 Junior Preferred Stock entitled to receive payment of a dividend or
distribution declared thereon, which record date shall be not more than 60 days
prior to the date fixed for the payment thereof.


     SECTION 3.     VOTING RIGHTS.  The holders of shares of Junior Preferred
Stock shall have the following voting rights:


            (A)     Subject to the provision for adjustment hereinafter set
forth, each share of Junior Preferred Stock shall entitle the holder thereof to
100 votes on all matters submitted to a vote of the stockholders of the Company.
In the event the Company shall at any time declare or pay any dividend on the
Common Stock payable in shares of Common Stock, or effect a subdivision or
combination or consolidation of the outstanding shares of Common Stock (by
reclassification or otherwise than by payment of a dividend in shares of Common
Stock) into a greater or lesser number of shares of Common Stock, then in each
such case the number of votes per share to which holders of shares of Junior
Preferred Stock were entitled immediately prior to such event shall be adjusted
by multiplying such number by a fraction, the numerator of which is the number
of shares of Common Stock outstanding immediately after such event and the
denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event.


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


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


     SECTION 4.     CERTAIN RESTRICTIONS.


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


                    (i)     declare or pay dividends, or make any other
distributions, on any shares of stock ranking junior (either as to dividends or
upon liquidation, dissolution or winding up) to the Junior Preferred Stock;


                                         A-3

<PAGE>

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


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


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


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


     SECTION 5.     REACQUIRED SHARES.  Any shares of Junior Preferred Stock
purchased or otherwise acquired by the Company in any manner whatsoever shall be
retired and cancelled promptly after the acquisition thereof.  All such shares
shall upon their cancellation become authorized but unissued shares of Preferred
Stock and may be reissued as part of a new series of Preferred Stock subject to
the conditions and restrictions on issuance set forth herein, in the Amended and
Restated Certificate of Incorporation, or in any other Certificate of
Designation creating a series of Preferred Stock or any similar stock or as
otherwise required by law.


     SECTION 6.     LIQUIDATION, DISSOLUTION OR WINDING UP.  Upon any
liquidation, dissolution or winding up of the Company, no distribution shall be
made (1) to the holders of shares of stock ranking junior (either as to
dividends or upon liquidation, dissolution or winding up) to the Junior
Preferred Stock unless, prior thereto, the holders of shares of Junior Preferred
Stock shall have received $100 per share, plus an amount equal to accrued and
unpaid dividends and distributions thereon, whether or not declared, to the date
of such payment, provided that the holders of shares of Junior Preferred Stock
shall be entitled to receive an aggregate amount per share, subject to the
provision for adjustment hereinafter set forth, equal to 100 times the aggregate
amount to be distributed per share to holders of shares of Common Stock, or (2)
to the holders of shares of stock ranking on a parity (either as to dividends or
upon liquidation, dissolution or winding up) with the Junior Preferred Stock,
except distributions made ratably on the Junior Preferred Stock and all such
parity stock in proportion to the total amounts to which 


                                         A-4

<PAGE>

the holders of all such shares are entitled upon such liquidation, dissolution
or winding up.  In the event the Company shall at any time declare or pay any
dividend on the Common Stock payable in shares of Common Stock, or effect a
subdivision or combination or consolidation of the outstanding shares of Common
Stock (by reclassification or otherwise than by payment of a dividend in shares
of Common Stock) into a greater or lesser number of shares of Common Stock, then
in each such case the aggregate amount to which holders of shares of Junior
Preferred Stock were entitled immediately prior to such event under the proviso
in clause (1) of the preceding sentence shall be adjusted by multiplying such
amount by a fraction the numerator of which is the number of shares of Common
Stock outstanding immediately after such event and the denominator of which is
the number of shares of Common Stock that were outstanding immediately prior to
such event.


     SECTION 7.     CONSOLIDATION, MERGER, ETC.  In case the Company 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 each share of
Junior Preferred Stock shall at the same time be similarly exchanged or changed
into an amount per share, subject to the provision for adjustment hereinafter
set forth, equal to 100 times the aggregate amount of stock, securities, cash
and/or any other property (payable in kind), as the case may be, into which or
for which each share of Common Stock is changed or exchanged.  In the event the
Company shall at any time declare or pay any dividend on the Common Stock
payable in shares of Common Stock, or effect a subdivision or combination or
consolidation of the outstanding shares of Common Stock (by reclassification or
otherwise than by payment of a dividend in shares of Common Stock) into a
greater or lesser number of shares of Common Stock, then in each such case the
amount set forth in the preceding sentence with respect to the exchange or
change of shares of Junior Preferred Stock shall be adjusted by multiplying such
amount by a fraction, the numerator of which is the number of shares of Common
Stock outstanding immediately after such event and the denominator of which is
the number of shares of Common Stock that were outstanding immediately prior to
such event.


     SECTION 8.     NO REDEMPTION.  The shares of Junior Preferred Stock shall
not be redeemable.


     SECTION 9.     RANK.  The Junior Preferred Stock shall rank, with respect
to the payment of dividends and the distribution of assets, junior to all series
of any other class of the Company's Preferred Stock.


     SECTION 10.    AMENDMENT.  The Amended and Restated Certificate of
Incorporation of the Company shall not be amended in any manner which would
materially alter or change the powers, preferences or special rights of the
Junior Preferred Stock so as to affect them adversely without the affirmative
vote of the holders of at least two-thirds of the outstanding shares of Junior
Preferred Stock, voting together as a single class.


                                         A-5

<PAGE>

       IN WITNESS WHEREOF, the undersigned have executed this certificate as of
February 2, 1999.




                                          /s/ Louis G. Lange   
                                          -------------------------------------
                                          Louis G. Lange, CHAIRMAN OF THE BOARD
                                          AND CHIEF EXECUTIVE OFFICER




                                          /s/ Alan C. Mendelson                 
                                          -------------------------------------
                                          Alan C. Mendelson, SECRETARY          















                                         A-6

<PAGE>

                             FORM OF RIGHT CERTIFICATE
                                          
                          (EXHIBIT B TO RIGHTS AGREEMENT)

CERTIFICATE NO. R-                                                  _____ RIGHTS

     NOT EXERCISABLE AFTER FEBRUARY 1, 2009 OR EARLIER IF REDEMPTION OR
     EXCHANGE OCCURS.  THE RIGHTS ARE SUBJECT TO REDEMPTION AT $.01 PER
     RIGHT AND TO EXCHANGE ON THE TERMS SET FORTH IN THE RIGHTS AGREEMENT.
                                          
                                 RIGHT CERTIFICATE
                                          
                               CV THERAPEUTICS, INC.
                                          
     This certifies that ___________________ or registered assigns, is the
registered owner of the number of Rights set forth above, each of which entitles
the owner thereof, subject to the terms, provisions and conditions of the Rights
Agreement, dated as of February 2, 1999 (the "Rights Agreement"), between CV
Therapeutics, Inc., 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., Pacific Time, on February 1, 2009 at the office of the
Rights Agent designated for such purpose, or at the office of its successor as
Rights Agent, one one-hundredth of a fully paid non-assessable share of Series A
Junior Participating Preferred Stock, par value $ .001 per share (the "Preferred
Shares"), of the Company, at a purchase price of $35.00 per one one-hundredth of
a Preferred Share (the "Purchase Price"), upon presentation and surrender of
this Right Certificate with the Form of Election to Purchase duly executed.  The
number of Rights evidenced by this Right Certificate (and the number of one
one-hundredths of a Preferred Share which may be purchased upon exercise hereof)
set forth above, and the Purchase Price set forth above, are the number and
Purchase Price as of February 2, 1999, based on the Preferred Shares as
constituted at such date. 

     From and after the time any Person becomes an Acquiring Person, (as such
terms are defined in the Rights Agreement), if the Rights evidenced by this
Right Certificate are beneficially owned by (i) an Acquiring Person or an
Affiliate or Associate of any such Acquiring Person (as such terms are defined
in the Rights Agreement), (ii) a transferee of any such Acquiring Person,
Associate or Affiliate who becomes a transferee after the Acquiring Person
becomes such, or (iii) under certain circumstances specified in the Rights
Agreement, a transferee of any such Acquiring Person, Associate or Affiliate who
becomes a transferee prior to or concurrently with the Acquiring Person becoming
such, such Rights shall become null and void without any further action and no
holder hereof shall have any right with respect to such Rights from and after
the time any Person becomes an Acquiring Person.


                                         B-1

<PAGE>

     As provided in the Rights Agreement, the Purchase Price and the number of
one one-hundredths of a Preferred Share which may be purchased upon the exercise
of the Rights evidenced by this Right Certificate are subject to modification
and adjustment upon the happening of certain events.

     This Right Certificate is subject to all of the terms, provisions and
conditions of the Rights Agreement, as amended from time to time, 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
Right Certificates.  Copies of the Rights Agreement are on file at the principal
executive offices of the Company and the above-mentioned offices of the Rights
Agent.

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

     Subject to the provisions of the Rights Agreement, the Rights evidenced by
this Certificate (i) may be redeemed by the Company at a redemption price of
$.01 per Right or (ii) may be exchanged in whole or in part for shares of the
Company's Common Stock, par value $.001 per share, or, upon circumstances set
forth in the Rights Agreement, cash, property or other securities of the
Company, including fractions of a share of Preferred Stock.

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

     No holder of this Right Certificate 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 Right Certificate shall have been
exercised as provided in the Rights Agreement.

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


                                         B-2

<PAGE>

     WITNESS the facsimile signature of the proper officers of the Company and
its corporate seal.  Dated as of February 2, 1999.

ATTEST:                                 CV THERAPEUTICS, INC.

By: /s/ Alan C. Mendelson               By: /s/ Louis G. Lange                  
   --------------------------------        ---------------------------------
        Alan C. Mendelson                       Louis G. Lange
        Secretary                               Chairman of the Board and
                                                Chief Executive Officer

COUNTERSIGNED:

NORWEST BANK MINNESOTA, N.A.
 as Rights Agent


By: /s/ Beverly Robinson 
   --------------------------------

Print Name:  Beverly Robinson

Title:  Account Manager


                                         B-3

<PAGE>

                     Form of Reverse Side of Right Certificate
                                          
                                 FORM OF ASSIGNMENT
                                          
                  (To be executed by the registered holder if such
                 holder desires to transfer the Right Certificate.)

     FOR VALUE RECEIVED ______________________________________ hereby sells,
assigns and transfers unto 

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

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

Dated:
      -------------------



                                             ----------------------------
                                             Signature
                                          
                                          
                                          
               Form of Reverse Side of Right Certificate -- continued
                                          
                                          
                                          
                                          
                                          
                                          
                                        B-4
                                          
<PAGE>

Signature Guaranteed:

     Signatures must be guaranteed by an "eligible guarantor institution" as
defined in Rule 17Ad-15 promulgated under the Securities Exchange Act of 1934,
as amended.

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

     The undersigned hereby certifies that (1) the Rights evidenced by this
Right Certificate are not being sold, assigned or transferred by or on behalf of
a Person who is or was an Acquiring Person, an Interested Stockholder or an
Affiliate or Associate thereof (as such terms are defined in the Rights
Agreement); and (2) after due inquiry and to the best of the knowledge of the
undersigned, the undersigned did not acquire the Rights evidenced by this Right
Certificate from any Person who is or was an Acquiring Person, an Interested
Stockholder, or an Affiliate or Associate thereof.




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






                                         B-5

<PAGE>

                            FORM OF ELECTION TO PURCHASE
                                          
                   (To be executed if holder desires to exercise
                                          
                   Rights represented by the Right Certificate.)


To Norwest Bank Minnesota, N.A.;


     The undersigned hereby irrevocably elects to exercise _____________________
Rights represented by this Right Certificate to purchase the Preferred Shares
issuable upon the exercise of such Rights and requests that certificates for
such Preferred Shares be 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 Right
Certificate, a new Right 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:
      -------------------



                                        -------------------------------
                                        Signature
                                          
                                          
                                          
               Form of Reverse Side of Right Certificate -- continued
                                          
                                          
                                          
                                          
                                        B-6
                                          

<PAGE>

Signature Guaranteed:

     Signatures must be guaranteed by an "eligible guarantor institution" as
defined in Rule 17Ad-15 promulgated under the Securities Exchange Act of 1934,
as amended.

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

     The undersigned hereby certifies that (1) the Rights evidenced by this
Right Certificate are not beneficially owned by nor are they being exercised on
behalf of an Acquiring Person, an Interested Stockholder or an Affiliate or
Associate thereof (as such terms are defined in the Rights Agreement); and
(2) after due inquiry and to the best of the knowledge of the undersigned, the
undersigned did not acquire the Rights evidenced by this Right Certificate from
any Person who is or was an Acquiring Person, an Interested Stockholder, or an
Affiliate or Associate thereof.



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

- -----------------------------------
                                          
                                       NOTICE
                                          
     The signature in the Form of Assignment or Form of Election to Purchase, as
the case may be, must conform to the name as written upon the face of this Right
Certificate in every particular, without alteration or enlargement or any change
whatsoever.

     In the event the certification set forth above in the Form of Assignment or
the Form of Election to Purchase, as the case may be, is not completed, the
Company and the Rights Agent will deem the beneficial owner of the Rights
evidenced by this Right Certificate to be an Acquiring Person or an Affiliate or
Associate thereof (as defined in the Rights Agreement) and such Assignment or
Election to Purchase will not be honored.









                                         B-7


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