CELL GENESYS INC
8-A12G/A, EX-99.1, 2000-07-28
PHARMACEUTICAL PREPARATIONS
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<PAGE>













                                 CELL GENESYS, INC.

                                        AND

                                FLEET NATIONAL BANK

                                    RIGHTS AGENT














               AMENDED AND RESTATED PREFERRED SHARES RIGHTS AGREEMENT


                             DATED AS OF JULY 27, 2000





<PAGE>

                                  TABLE OF CONTENTS


<TABLE>
<CAPTION>

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Section 20.    Duties of Rights Agent. . . . . . . . . . . . . . . . . . . . . . . 28

Section 21.    Change of Rights Agent. . . . . . . . . . . . . . . . . . . . . . . 30

                                   -ii-

<PAGE>

                                  TABLE OF CONTENTS
                                     (CONTINUED)

                                                                                 PAGE
                                                                                 ----

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

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

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

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

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

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

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

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

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

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

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

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

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


EXHIBITS

Exhibit A      Form of Certificate of Amendment to Certificate of Designation

Exhibit B      Form of Rights Certificate

Exhibit C      Summary of Rights


</TABLE>



                                  -iii-



<PAGE>

                AMENDED AND RESTATED PREFERRED SHARES RIGHTS AGREEMENT

       This Amended and Restated Preferred Shares Rights Agreement, is dated as
of  July 27, 2000, between Cell Genesys, Inc., a Delaware corporation, and Fleet
National Bank, a national banking association, as rights agent (the "Rights
Agent").

       WHEREAS, the Company and the Rights Agent are parties to that certain
Rights Agreement dated as of July 28, 1995 (the "PRIOR AGREEMENT");

       WHEREAS, on July 20, 1995 (the "RIGHTS DIVIDEND DECLARATION DATE"), the
Board of Directors of the Company authorized and declared a dividend of one
Preferred Share purchase right (a "RIGHT") for each Common Share (as hereinafter
defined) of the Company outstanding as of the Close of Business (as hereinafter
defined) on August 21, 1995 (the "RECORD DATE"), each Right representing the
right to purchase one one-hundredth of a share of Series A Participating
Preferred Stock (as such number may be adjusted pursuant to the provisions of
this Agreement), having the rights, preferences and privileges set forth in the
form of Certificate of Designations of Rights, Preferences and Privileges of
Series A Participating Preferred Stock attached hereto as Exhibit A, upon the
terms and subject to the conditions herein set forth, and further authorized and
directed the issuance of one Right (as such number may be adjusted pursuant to
the provisions of this Agreement) with respect to each Common Share that shall
become outstanding between the Record Date and the earlier of the Distribution
Date and the Expiration Date (as such terms are hereinafter defined), and in
certain circumstances after the Distribution Date.

       WHEREAS, the Company has determined that, pursuant to Section 27 of the
Prior Agreement, the Prior Agreement may be amended and restated as set forth
herein without the approval of the holders of the Rights (as hereinafter
defined) and the Company wishes to amend and restate that Prior Agreement to
provide as follows.

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

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

              (a)    "ACQUIRING PERSON" shall mean any Person, who or which,
together with all Affiliates and Associates of such Person, shall be the
Beneficial Owner of 15% or more of the Common Shares then outstanding, but
shall not include the Company, any Subsidiary of the Company or any employee
benefit plan of the Company or of any Subsidiary of the Company, or any entity
holding Common Shares for or pursuant to the terms of any such plan.
Notwithstanding the foregoing, no Person shall be deemed to be an Acquiring
Person as the result of an acquisition of Common Shares by the Company which,
by reducing the number of shares outstanding, increases the proportionate
number of shares beneficially owned by such Person to 15% or more of the
Common Shares of the Company then outstanding; PROVIDED, HOWEVER, that if a
Person shall become

<PAGE>


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

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

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

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

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

                  (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

                                      -2-
<PAGE>


time) pursuant to any agreement, arrangement or understanding (other than
customary agreements with and between underwriters and selling group members
with respect to a bona fide public offering of securities), or upon the
exercise of conversion rights, exchange rights, rights (other than the
Rights), warrants or options, or otherwise; PROVIDED, HOWEVER, that a Person
shall not be deemed pursuant to this Section 1(d)(ii)(A) to be the Beneficial
Owner of, or to beneficially own, (1) securities tendered pursuant to a
tender or exchange offer made by or on behalf of such Person or any of such
Person's Affiliates or Associates until such tendered securities are accepted
for purchase or exchange, or (2) securities which a Person or any of such
Person's Affiliates or Associates may be deemed to have the right to acquire
pursuant to any merger or other acquisition agreement between the Company and
such Person (or one or more of its Affiliates or Associates) if such
agreement has been approved by the Board of Directors of the Company prior to
there being an Acquiring Person; or (B) the right to vote pursuant to any
agreement, arrangement or understanding; PROVIDED, HOWEVER, that a Person
shall not be deemed the Beneficial Owner of, or to beneficially own, any
security under this Section 1(d)(ii)(B) if the agreement, arrangement or
understanding to vote such security (1) arises solely from a revocable proxy
or consent given to such Person in response to a public proxy or consent
solicitation made pursuant to, and in accordance with, the applicable rules
and regulations of the Exchange Act and (2) is not also then reportable on
Schedule 13D under the Exchange Act (or any comparable or successor report);
or

                  (iii)     which are beneficially owned, directly or
indirectly, by any other Person (or any Affiliate or Associate thereof) with
which such Person or any of such Person's Affiliates or Associates has any
agreement, arrangement or understanding, whether or not in writing (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(d)(ii)(B)) or disposing of any securities of the Company; PROVIDED,
HOWEVER, that in no case shall an officer or director of the Company be deemed
(x) the Beneficial Owner of any securities beneficially owned by another officer
or director of the Company solely by reason of actions undertaken by such
persons in their capacity as officers or directors of the Company or (y) the
Beneficial Owner of securities held of record by the trustee of any employee
benefit plan of the Company or any Subsidiary of the Company for the benefit of
any employee of the Company or any Subsidiary of the Company, other than the
officer or director, by reason of any influence that such officer or director
may have over the voting of the securities held in the plan.

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

              (f)    "CLOSE OF BUSINESS" on any given date shall mean
5:00 P. M., New York time, on such date; PROVIDED, HOWEVER, that if such date is
not a Business Day it shall mean 5:00 P.M., New York time, on the next
succeeding Business Day.

              (g)    "COMMON SHARES" when used with reference to the Company
shall mean the shares of Common Stock of the Company, par value $0. 001 per
share.  Common Shares when used

                                      -3-
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with reference to any Person other than the Company shall mean the capital
stock (or equity interest) with the greatest voting power of such other
Person or, if such other Person is a Subsidiary of another Person, the Person
or Persons which ultimately control such first-mentioned Person.

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

              (i)    "COMPANY" shall mean Cell Genesys, Inc., a Delaware
corporation, subject to the terms of Section 13(a)(iii)(C) hereof.

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

                                      -4-
<PAGE>


fair value per share as determined in good faith by the Board of Directors of
the Company, whose determination shall be described in a statement filed with
the Rights Agent and shall be conclusive for all purposes.

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

              (l)    "DISTRIBUTION DATE" shall mean the earlier of (i) the Close
of Business on the tenth day (or such later date as may be determined by action
of the Company's Board of Directors) after the Shares Acquisition Date (or, if
the tenth day after the Shares Acquisition Date occurs before the Record Date,
the Close of Business on the Record Date) or (ii) the Close of Business on the
tenth Business Day (or such later date as may be determined by action of the
Company's Board of Directors) after the date that a tender or exchange offer by
any Person (other than the Company, any Subsidiary of the Company, any employee
benefit plan of the Company or of any Subsidiary of the Company, or any Person
or entity organized, appointed or established by the Company for or pursuant to
the terms of any such plan) is first published or sent or given within the
meaning of Rule 14d-2(a) of the General Rules and Regulations under the Exchange
Act, if, assuming the successful consummation thereof, such Person would be an
Acquiring Person.

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

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

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

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

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

              (r)    "FINAL EXPIRATION DATE" shall mean July 27, 2010.

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

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

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

                                      -5-
<PAGE>


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

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

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

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

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

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

              (bb)   "RIGHTS AGENT" shall mean (i) FLEET NATIONAL BANK, a
national banking association, (ii) its successor or replacement as provided in
Sections 19 and 21 hereof or (iii) any additional Person appointed pursuant to
Section 2 hereof.

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

              (dd)   "RIGHTS AMENDMENT DATE" shall have the meaning set forth in
the recitals at the beginning of this Agreement.

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

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

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

              (hh)   "SHARES ACQUISITION DATE" shall mean the first date of
public announcement (which, for purposes of this definition, shall include,
without limitation, a report filed pursuant to Section 13(d) under the Exchange
Act) by the Company or an Acquiring Person that an Acquiring Person has become
such; PROVIDED THAT, if such Person is determined not to have become an
Acquiring Person pursuant to Section 1(a) hereof, then no Shares Acquisition
Date shall be deemed to have occurred.

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

              (jj)   "SUBSIDIARY" of any Person shall mean any corporation or
other entity of which an amount of voting securities sufficient to elect a
majority of the directors or Persons having similar authority of such
corporation or other entity is beneficially owned, directly or indirectly, by
such Person, or any corporation or other entity otherwise controlled by such
Person.

                                      -6-
<PAGE>


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

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

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

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

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

       Section 2.    APPOINTMENT OF RIGHTS AGENT.  The Company hereby appoints
the Rights Agent to act as agent for the Company and the holders of the Rights
(who, in accordance with Section 3 hereof, shall prior to the Distribution Date
also be the holders of the Common Shares) in accordance with the terms and
conditions hereof, and the Rights Agent hereby accepts such appointment.  The
Company may from time to time appoint such co-Rights Agents as it may deem
necessary or desirable, upon ten (10) days' prior written notice to the Rights
Agent.  The Rights Agent shall have no duty to supervise, and shall in no event
be liable for, the acts or omissions of any co-Rights Agent.

       Section 3.    ISSUANCE OF RIGHTS CERTIFICATES.

              (a)    Until the Distribution Date, (i) the Rights will be
evidenced (subject to the provisions of Sections 3(b) and 3(c) hereof) by the
certificates for Common Shares registered in the names of the holders thereof
(which certificates shall also be deemed to be Rights Certificates) and not by
separate Rights Certificates and (ii) the right to receive Rights Certificates
will be transferable only in connection with the transfer of Common Shares.
Until the earlier of the Distribution Date or the Expiration Date, the surrender
for transfer of certificates for Common Shares shall also constitute the
surrender for transfer of the Rights associated with the Common Shares
represented thereby.  As soon as practicable after the Distribution Date, the
Company will prepare and execute, the Rights Agent will countersign, and the
Company will send or cause to be sent (and the Rights Agent will, if requested,
send) by first-class, postage-prepaid mail, to each record holder of Common
Shares as of the Close of Business on the Distribution Date, at the address of
such holder shown on the records of the Company, a Rights Certificate evidencing
one Right for each Common Share so held, subject to adjustment as provided
herein.  In the event that an adjustment in the number of Rights per Common
Share has been made pursuant to Section 11 hereof, then at the time of
distribution of the Rights Certificates, the Company shall make the necessary
and appropriate rounding adjustments (in accordance with Section 14(a) hereof)
so that Rights Certificates representing only whole numbers of Rights are
distributed and cash is paid in lieu of any fractional Rights.  As of the
Distribution

                                      -7-
<PAGE>


Date, the Rights will be evidenced solely by such Rights Certificates and may
be transferred by the transfer of the Rights Certificates as permitted
hereby, separately and apart from any transfer of Common Shares, and the
holders of such Rights Certificates as listed in the records of the Company
or any transfer agent or registrar for the Rights shall be the record holders
thereof.

              (b)    On the Record Date or as soon as practicable thereafter,
the Company will send a copy of the Summary of Rights by first-class,
postage-prepaid mail, to each record holder of Common Shares as of the Close
of Business on the Record Date, at the address of such holder shown on the
records of the Company's transfer agent and registrar.  With respect to
certificates for Common Shares outstanding as of the Record Date, until the
Distribution Date, the Rights will be evidenced by such certificates
registered in the names of the holders thereof together with the Summary of
Rights.

              (c)    Unless the Board of Directors by resolution adopted at or
before the time of the issuance of any Common Shares after the Record Date but
prior to the earlier of the Distribution Date or the Expiration Date (or, in
certain circumstances provided in Section 22 hereof, after the Distribution
Date) specifies to the contrary, Rights shall be issued in respect of all
Common Shares that are so issued, and Certificates representing such Common
Shares shall also be deemed to be certificates for Rights, and shall bear the
following legend:

       THIS CERTIFICATE ALSO EVIDENCES AND ENTITLES THE HOLDER HEREOF TO
       CERTAIN RIGHTS AS SET FORTH IN THE AMENDED AND RESTATED RIGHTS
       AGREEMENT BETWEEN CELL GENESYS, INC. AND FLEET NATIONAL BANK, AS
       THE RIGHTS AGENT, DATED AS OF JULY 27, 2000, (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 CELL GENESYS, INC.  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. CELL GENESYS, INC. WILL MAIL TO THE
       HOLDER OF THIS CERTIFICATE A COPY OF THE RIGHTS AGREEMENT WITHOUT
       CHARGE AFTER RECEIPT OF A WRITTEN REQUEST THEREFOR.  UNDER CERTAIN
       CIRCUMSTANCES SET FORTH IN THE RIGHTS AGREEMENT, RIGHTS ISSUED TO,
       OR HELD BY, ANY PERSON WHO IS, WAS OR BECOMES AN ACQUIRING PERSON
       OR ANY AFFILIATE OR ASSOCIATE THEREOF (AS SUCH TERMS ARE DEFINED
       IN THE RIGHTS AGREEMENT), WHETHER CURRENTLY HELD BY OR ON BEHALF
       OF SUCH PERSON OR BY ANY SUBSEQUENT HOLDER, MAY BECOME NULL AND
       VOID.

With respect to such certificates containing the foregoing legend, until the
earlier of the Distribution Date or the Expiration Date, the Rights associated
with the Common Shares represented by such certificates shall be evidenced by
such certificates alone, and the surrender for transfer of any such

                                      -8-
<PAGE>


certificate shall also constitute the transfer of the Rights associated with
the Common Shares represented thereby.

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

       Section 4.    FORM OF RIGHTS CERTIFICATES.

              (a)    The Rights Certificates (and the forms of election to
purchase Common Shares and of assignment to be printed on the reverse
thereof) shall be substantially in the form of EXHIBIT B hereto and may have
such marks of identification or designation and such legends, summaries or
endorsements printed thereon as the Company may deem appropriate and as are
not inconsistent with the provisions of this Agreement, or as may be required
to comply with any applicable law or with any rule or regulation made
pursuant thereto or with any rule or regulation of any stock exchange or a
national market system, on which the Rights may from time to time be listed
or included, or to conform to usage. Subject to the provisions of Section 11
and Section 22 hereof, the Rights Certificates, whenever distributed, shall
be dated as of the Record Date (or in the case of Rights issued with respect
to Common Shares issued by the Company after the Record Date, as of the date
of issuance of such Common Shares) and on their face shall entitle the
holders thereof to purchase such number of one-thousandths of a Preferred
Share as shall be set forth therein at the price set forth therein (such
exercise price per one one-thousandth of a Preferred Share being hereinafter
referred to as the "EXERCISE PRICE" and the aggregate Exercise Price of all
Preferred Shares issuable upon exercise of one Right being hereinafter
referred to as the "TOTAL EXERCISE PRICE"), but the number and type of
securities purchasable upon the exercise of each Right and the Exercise Price
shall be subject to adjustment as provided herein.

              (b)    Any Rights Certificate issued pursuant to Section 3(a)
or Section 22 hereof that represents Rights beneficially owned by:  (i) an
Acquiring Person or any Associate or Affiliate of an Acquiring Person, (ii) a
Post-Event Transferee, (iii) a Pre-Event Transferee or (iv) any subsequent
transferee receiving transferred Rights from a Post-Event Transferee or a
Pre-Event Transferee, either directly or through one or more intermediate
transferees, and any Rights Certificate issued pursuant to Section 6 or
Section 11 hereof upon transfer, exchange, replacement or adjustment of any
other Rights Certificate referred to in this sentence, shall contain (to the
extent feasible) the following legend:

       THE RIGHTS REPRESENTED BY THIS RIGHTS CERTIFICATE ARE OR WERE
       BENEFICIALLY OWNED BY A PERSON WHO WAS OR BECAME AN ACQUIRING
       PERSON OR AN AFFILIATE OR ASSOCIATE OF AN ACQUIRING PERSON
       (AS SUCH TERMS ARE DEFINED IN THE AMENDED AND RESTATED RIGHTS
       AGREEMENT).  ACCORDINGLY, THIS RIGHTS CERTIFICATE AND THE RIGHTS
       REPRESENTED HEREBY MAY BECOME NULL AND VOID IN THE CIRCUMSTANCES
       SPECIFIED IN SECTION 7(e) OF THE AMENDED AND RESTATED RIGHTS
       AGREEMENT.

                                      -9-
<PAGE>

       Section 5.    COUNTERSIGNATURE AND REGISTRATION.

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

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

       Section 6.    TRANSFER, SPLIT UP, COMBINATION AND EXCHANGE OF RIGHTS
CERTIFICATES; MUTILATED, DESTROYED, LOST OR STOLEN RIGHTS CERTIFICATES.

              (a)    Subject to the provisions of Sections 7(e), 14 and 24
hereof, at any time after the Close of Business on the Distribution Date, and at
or prior to the Close of Business on the Expiration Date, any Rights Certificate
or Rights Certificates may be transferred, split up, combined or exchanged for
another Rights Certificate or Rights Certificates, entitling the registered
holder to purchase a like number of one-thousandths of a Preferred Share (or,
following a Triggering Event, other securities, cash or other assets, as the
case may be) as the Rights Certificate or Rights Certificates surrendered then
entitled such holder to purchase.  Any registered holder desiring to transfer,
split up, combine or exchange any Rights Certificate or Rights Certificates
shall make such request in writing delivered to the Rights Agent, and shall
surrender the Rights Certificate or Rights Certificates to be transferred, split
up, combined or exchanged at the office of the Rights Agent designated for such
purpose.  Neither the Rights Agent nor the Company shall be obligated to take
any action whatsoever with respect to the transfer of any such surrendered
Rights Certificate until the registered holder shall have completed and signed
the certificate contained in the form of assignment on the reverse side of such
Rights Certificate and shall have provided such additional evidence of the
identity of the Beneficial Owner (or former Beneficial Owner) or Affiliates or
Associates thereof as the Company shall reasonably request.  Thereupon the
Rights Agent shall, subject to Sections 7(e), 14 and 24 hereof, countersign and
deliver to the person entitled thereto a

                                      -10-
<PAGE>


Rights Certificate or Rights Certificates, as the case may be, as so
requested.  The Company may require payment of a sum sufficient to cover any
tax or governmental charge that may be imposed in connection with any
transfer, split up, combination or exchange of Rights Certificates.

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

       Section 7.    EXERCISE OF RIGHTS; EXERCISE PRICE; EXPIRATION DATE OF
RIGHTS.

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

              (b)    The Exercise Price for each one-thousandth of a Preferred
Share issuable pursuant to the exercise of a Right shall initially be Three
Hundred Dollars ($300.00), shall be subject to adjustment from time to time as
provided in Sections 11 and 13 hereof and shall be payable in lawful money of
the United States of America in accordance with paragraph (c) below.

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

                                      -11-
<PAGE>


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

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

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

                                      -12-
<PAGE>


              (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, in
addition to having complied with the requirements of Section 7(a), have
(i) completed and signed the certificate contained in the form of election to
purchase set forth on the reverse side of the Rights Certificate surrendered for
such exercise and (ii) provided such additional evidence of the identity of the
Beneficial Owner (or former Beneficial Owner) or Affiliates or Associates
thereof as the Company shall reasonably request.

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

       Section 9.    RESERVATION AND AVAILABILITY OF PREFERRED SHARES.

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

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

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

                                      -13-
<PAGE>


effective (with a prospectus at all times meeting the requirements of the
Securities Act) until the earlier of (A) the date as of which the Rights are
no longer exercisable for such securities and (B) the date of expiration of
the Rights.  The Company may temporarily suspend, for a period not to exceed
ninety (90) days after the date set forth in clause (i) of the first sentence
of this Section 9(c), the exercisability of the Rights in order to prepare
and file such registration statement and permit it to become effective.  Upon
any such suspension, the Company shall issue a public announcement stating,
and notify the Rights Agent, that the exercisability of the Rights has been
temporarily suspended, as well as a public announcement and notification to
the Rights Agent at such time as the suspension is no longer in effect.  The
Company will also take such action as may be appropriate under, or to ensure
compliance with, the securities or "blue sky" laws of the various states in
connection with the exercisability of the Rights.  Notwithstanding any
provision of this Agreement to the contrary, the Rights shall not be
exercisable in any jurisdiction, unless the requisite qualification in such
jurisdiction shall have been obtained, or an exemption therefrom shall be
available, and until a registration statement has been declared and remains
effective.

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

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

       Section 10.   RECORD DATE.  Each Person in whose name any certificate for
a number of one-thousandths of a Preferred Share (or other securities of the
Company) is issued upon the exercise of Rights shall for all purposes be deemed
to have become the holder of record of Preferred Shares (or other securities of
the Company) represented thereby on, and such certificate shall be dated, the
date upon which the Rights Certificate evidencing such Rights was duly
surrendered and payment of the Total Exercise Price with respect to which the
Rights have been exercised (and any applicable transfer taxes) was made;
PROVIDED, HOWEVER, that if the date of such surrender and payment is a date upon
which the transfer books of the Company are closed, such Person shall be deemed
to have become the record holder of such shares on, and such certificate shall
be dated, the next succeeding Business Day on which the transfer books of the
Company are open.  Prior to the exercise of the

                                      -14-
<PAGE>


Rights evidenced thereby, the holder of a Rights Certificate shall not be
entitled to any rights of a holder of Preferred Shares (or other securities
of the Company) for which the Rights shall be exercisable, including, without
limitation, the right to vote, to receive dividends or other distributions or
to exercise any preemptive rights, and shall not be entitled to receive any
notice of any proceedings of the Company, except as provided herein.

       Section 11.   ADJUSTMENT OF EXERCISE PRICE, NUMBER OF SHARES OR NUMBER OF
RIGHTS.  The Exercise Price, the number and kind of shares or other property
covered by each Right and the number of Rights outstanding are subject to
adjustment from time to time as provided in this Section 11.

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

                  (ii)      Subject to Section 24 of this Agreement, in the
event that a Triggering Event shall have occurred, then promptly following such
Triggering Event each holder of a Right, except as provided in Section 7(e)
hereof, shall thereafter have the right to receive for each Right,

                                      -15-
<PAGE>


upon exercise thereof in accordance with the terms of this Agreement and
payment of the Exercise Price in effect immediately prior to the occurrence
of the Triggering Event, in lieu of a number of one-thousandths of a
Preferred Share, such number of Common Shares of the Company as shall equal
the quotient obtained by dividing (A) the product obtained by multiplying (1)
the  Exercise Price in effect immediately prior to the occurrence of the
Triggering Event by (2) the number of one-thousandths of a Preferred Share
for which a Right was exercisable (or would have been exercisable if the
Distribution Date had occurred) immediately prior to the first occurrence of
a Triggering Event, by (B) 50% of the Current Per Share Market Price for
Common Shares on the date of occurrence of the Triggering Event; PROVIDED,
HOWEVER, that the Exercise Price and the number of Common Shares of the
Company so receivable upon exercise of a Right shall be subject to further
adjustment as appropriate in accordance with Section 11(e) hereof to reflect
any events occurring in respect of the Common Shares of the Company after the
occurrence of the Triggering Event.

                  (iii)     In lieu of issuing Common Shares in accordance with
Section 11(a)(ii) hereof, the Company may, if the Company's Board of Directors
determines that such action is necessary or appropriate and not contrary to the
interest of holders of Rights and, in the event that the number of Common Shares
which are authorized by the Company's Certificate of Incorporation but not
outstanding or reserved for issuance for purposes other than upon exercise of
the Rights are not sufficient to permit the exercise in full of the Rights, or
if any necessary regulatory approval for such issuance has not been obtained by
the Company, the Company shall:  (A) determine the excess of (1) the value of
the Common Shares issuable upon the exercise of a Right (the "CURRENT VALUE")
over (2) the Exercise Price (such excess, the "SPREAD") and (B) with respect to
each Right, make adequate provision to substitute for such Common Shares, upon
exercise of the Rights, (1) cash, (2) a reduction in the Exercise Price,
(3) other equity securities of the Company (including, without limitation,
shares or units of shares of any series of preferred stock which the Company's
Board of Directors has deemed to have the same value as Common Shares (such
shares or units of shares of preferred stock are herein called "COMMON STOCK
EQUIVALENTS")), except to the extent that the Company has not obtained any
necessary stockholder or regulatory approval for such issuance, (4) debt
securities of the Company, except to the extent that the Company has not
obtained any necessary stockholder or regulatory approval for such issuance,
(5) other assets or (6) any combination of the foregoing, having an aggregate
value equal to the Current Value, where such aggregate value has been determined
by the Company's Board of Directors based upon the advice of a nationally
recognized investment banking firm selected by the Company's Board of Directors;
PROVIDED, HOWEVER, that if the Company shall not have made adequate provision to
deliver value pursuant to clause (B) above within thirty (30) days following the
later of (x) the first occurrence of a Triggering Event and (y) the date on
which the Company's right of redemption pursuant to Section 23(a) expires (the
later of (x) and (y) being referred to herein as the "SECTION 11(a)(ii) TRIGGER
DATE"), then the Company shall be obligated to deliver, upon the surrender for
exercise of a Right and without requiring payment of the Exercise Price, Common
Shares (to the extent available), except to the extent that the Company has not
obtained any necessary stockholder or regulatory approval for such issuance, and
then, if necessary, cash, which shares and/or cash have an aggregate value equal
to the Spread.  If the Company's Board of Directors shall determine in good
faith that it is likely that sufficient additional Common Shares could be
authorized for issuance upon exercise in full of the Rights or that any
necessary regulatory approval for such issuance will be obtained, the

                                      -16-
<PAGE>


thirty (30) day period set forth above may be extended to the extent
necessary, but not more than ninety (90) days after the Section 11(a)(ii)
Trigger Date, in order that the Company may seek stockholder approval for the
authorization of such additional shares or take action to obtain such
regulatory approval (such period, as it may be extended, the "SUBSTITUTION
PERIOD").  To the extent that the Company determines that some action need be
taken pursuant to the first and/or second sentences of this Section
11(a)(iii), the Company (x) shall provide, subject to Section 7(e) hereof,
that such action shall apply uniformly to all outstanding Rights and (y) may
suspend the exercisability of the Rights until the expiration of the
Substitution Period in order to seek any authorization of additional shares,
to take any action to obtain any required regulatory approval and/or to
decide the appropriate form of distribution to be made pursuant to such first
sentence and to determine the value thereof.  In the event of any such
suspension, the Company shall issue a public announcement stating that the
exercisability of the Rights has been temporarily suspended, as well as a
public announcement at such time as the suspension is no longer in effect.
For purposes of this Section 11(a)(iii), the value of the Common Shares shall
be the Current Per Share Market Price of the Common Shares on the Section
11(a)(ii) Trigger Date and the value of any Common Stock Equivalent shall be
deemed to have the same value as the Common Shares on such date.

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

                                      -17-
<PAGE>


adjusted to be the Exercise Price which would then be in effect if such
record date had not been fixed.

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

              (d)    Anything herein to the contrary notwithstanding, no
adjustment in the Exercise Price shall be required unless such adjustment would
require an increase or decrease of at least one percent (1.0%) of the Exercise
Price; PROVIDED, HOWEVER, that any adjustments which by reason of this
Section 11(d) are not required to be made shall be carried forward and taken
into account in any subsequent adjustment.  All calculations under this
Section 11 shall be made to the nearest cent or to the nearest ten-thousandth of
a Common Share or other share or one hundred-thousandth of a Preferred Share, as
the case may be.  Notwithstanding the first sentence of this Section 11(d), any
adjustment required by this Section 11 shall be made no later than the earlier
of (i) three (3) years from the date of the transaction which requires such
adjustment or (ii) the Expiration Date.

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

                                      -18-
<PAGE>

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

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

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

              (i)    Irrespective of any adjustment or change in the Exercise
Price or the number of Preferred Shares issuable upon the exercise of the
Rights, the Rights Certificates theretofore and thereafter issued may continue
to express the Exercise Price per one one-thousandth of a Preferred


                                      -19-

<PAGE>

Share and the number of one-thousandths of a Preferred Share which were
expressed in the initial Rights Certificates issued hereunder.

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

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

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

              (m)    The Company covenants and agrees that, after the
Distribution Date, it will not, except as permitted by Sections 23, 24 or 27
hereof, take (or permit to be taken) any action if at the time such action is
taken it is reasonably foreseeable that such action will diminish
substantially or otherwise eliminate the benefits intended to be afforded by
the Rights.

              (n)    In the event that the Company shall at any time after the
date of this Agreement (A) declare a dividend on the Common Shares payable in
Common Shares, (B) subdivide the outstanding Common Shares, (C) combine the
outstanding Common Shares (by reverse stock split or otherwise) into a smaller
number of Common Shares, or (D) issue any shares of its capital stock in a
reclassification of the Common Shares (including any such reclassification in
connection with a consolidation or merger in which the Company is the
continuing or surviving corporation), then, in each such event, except as
otherwise provided in this Section 11(a) and Section 7(e) hereof: (1) each
Common Share (or shares of capital stock issued in such


                                      -20-

<PAGE>

reclassification of the Common Shares) outstanding immediately following such
time shall have associated with it the number of Rights as were associated
with one Common Share immediately prior to the occurrence of the event
described in clauses (A)-(D) above; (2) the Exercise Price in effect at the
time of the record date for such dividend or of the effective date of such
subdivision, combination or reclassification shall be adjusted so that the
Exercise Price thereafter shall equal the result obtained by multiplying the
Exercise Price in effect immediately prior to such time by a fraction, the
numerator of which shall be the total number of Common Shares outstanding
immediately prior to the event described in clauses (A)-(D) above, and the
denominator of which shall be the total number of Common Shares outstanding
immediately after such event; PROVIDED, HOWEVER, that in no event shall the
consideration to be paid upon the exercise of one Right be less than the
aggregate par value of the shares of capital stock of the Company issuable
upon exercise of such Right; and (3) the number of one-thousandths of a
Preferred Share (or shares of such other capital stock) issuable upon the
exercise of each Right outstanding after such event shall equal the number of
one-thousandths of a Preferred Share (or shares of such other capital stock)
as were issuable with respect to one Right immediately prior to such event.
Each Common Share that shall become outstanding after an adjustment has been
made pursuant to this Section 11(n) shall have associated with it the number
of Rights, exercisable at the Exercise Price and for the number of
one-thousandths of a Preferred Share (or shares of such other capital stock)
as one Common Share has associated with it immediately following the
adjustment made pursuant to this Section 11(n).  If an event occurs which
would require an adjustment under both this Section 11(n) and Section
11(a)(ii) hereof, the adjustment provided for in this Section 11(n) shall be
in addition to, and shall be made prior to, any adjustment required pursuant
to Section 11(a)(ii) hereof.

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

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

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

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


                                      -21-

<PAGE>

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

                  (iii)     the Company shall sell or otherwise transfer (or
one or more of its Subsidiaries shall sell or otherwise transfer), in one or
more transactions, assets or earning power aggregating 50% or more of the
assets or earning power of the Company and its Subsidiaries (taken as a whole)
to any other Person or Persons (other than the Company or one or more of its
wholly owned Subsidiaries in one or more transactions, each of which
individually (and together) complies with Section 11(m) hereof),

                            then, concurrent with and in each such case,

                            (A)    each holder of a Right (except as provided
in Section 7(e) hereof) shall thereafter have the right to receive, upon the
exercise thereof at a price equal to the Total Exercise Price applicable
immediately prior to the occurrence of the Section 13 Event in accordance with
the terms of this Agreement, such number of validly authorized and issued,
fully paid, nonassessable and freely tradeable Common Shares of the Principal
Party (as hereinafter defined), free of any liens, encumbrances, rights of
first refusal or other adverse claims, as shall be equal to the result
obtained by dividing such Total Exercise Price by an amount equal to fifty
percent (50%) of the Current Per Share Market Price of the Common Shares of
such Principal Party on the date of consummation of such Section 13 Event,
PROVIDED, HOWEVER, that the Exercise Price and the number of Common Shares of
such Principal Party so receivable upon exercise of a Right shall be subject
to further adjustment as appropriate in accordance with Section 11(e) hereof;

                            (B)    such Principal Party shall thereafter be
liable for, and shall assume, by virtue of such Section 13 Event, all the
obligations and duties of the Company pursuant to this Agreement;

                            (C)    the term "Company" shall thereafter be
deemed to refer to such Principal Party, it being specifically intended that
the provisions of Section 11 hereof shall apply only to such Principal Party
following the first occurrence of a Section 13 Event;

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

                            (E)    upon the subsequent occurrence of any
consolidation, merger, sale or transfer of assets or other extraordinary
transaction in respect of such Principal Party, each holder of a Right shall
thereupon be entitled to receive, upon exercise of a Right and payment of the
Total Exercise Price as provided in this Section 13(a), such cash, shares,
rights, warrants and other property which such holder would have been entitled
to receive had such holder, at the time of such


                                      -22-

<PAGE>

transaction, owned the Common Shares of the Principal Party receivable upon
the exercise of such Right pursuant to this Section 13(a), and such Principal
Party shall take such steps (including, but not limited to, reservation of
shares of stock) as may be necessary to permit the subsequent exercise of the
Rights in accordance with the terms hereof for such cash, shares, rights,
warrants and other property.

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

              (b)    For purposes of this Agreement, the term  "PRINCIPAL
PARTY" shall mean:

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

                     (ii)   in the case of any transaction described in clause
(iii) of Section 13(a) hereof, the Person that is the party receiving the
greatest portion of the assets or earning power transferred pursuant to such
transaction or transactions, or, if more than one Person that is a party to
such transaction or transactions receives the same portion of the assets or
earning power so transferred and each such portion would, were it not for the
other equal portions, constitute the greatest portion of the assets or earning
power so transferred, or if the Person receiving the greatest portion of the
assets or earning power cannot be determined, whichever of such Persons is the
issuer of Common Shares having the greatest aggregate market value of shares
outstanding; PROVIDED, HOWEVER, that in any such case described in the
foregoing clause (b)(i) or (b)(ii), if the Common Shares of such Person are
not at such time or have not been continuously over the preceding 12-month
period registered under Section 12 of the Exchange Act, then (1) if such
Person is a direct or indirect Subsidiary of another Person the Common Shares
of which are and have been so registered, the term "Principal Party" shall
refer to such other Person, or (2) if such Person is a Subsidiary, directly or
indirectly, of more than one Person, the Common Shares of which are and have
been so registered, the term "Principal Party" shall refer to whichever of
such Persons is the issuer of Common Shares having the greatest aggregate
market value of shares outstanding, or (3) if such Person is owned, directly
or indirectly, by a joint venture formed by two or more Persons that are not
owned, directly or indirectly by the same Person, the rules set forth in
clauses (1) and (2) above shall apply to each of the owners having an interest
in the venture as if the Person owned by the joint


                                      -23-

<PAGE>

venture was a Subsidiary of both or all of such joint venturers, and the
Principal Party in each such case shall bear the obligations set forth in this
Section 13 in the same ration as its interest in such Person bears to the
total of such interests.

              (c)    The Company shall not consummate any Section 13 Event
unless the Principal Party shall have a sufficient number of authorized Common
Shares that have not been issued or reserved for issuance to permit the
exercise in full of the Rights in accordance with this Section 13 and unless
prior thereto the Company and such issuer shall have executed and delivered to
the Rights Agent a supplemental agreement confirming that such Principal Party
shall, upon consummation of such Section 13 Event, assume this Agreement in
accordance with Sections 13(a) and 13(b) hereof, that all rights of first
refusal or preemptive rights in respect of the issuance of Common Shares of
such Principal Party upon exercise of outstanding Rights have been waived,
that there are no rights, warrants, instruments or securities outstanding or
any agreements or arrangements which, as a result of the consummation of such
transaction, would eliminate or substantially diminish the benefits intended
to be afforded by the Rights and that such transaction shall not result in a
default by such Principal Party under this Agreement, and further providing
that, as soon as practicable after the date of such Section 13 Event, such
Principal Party will:

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

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

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

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

              (d)    In case the "Principal Party" for purposes of Section
13(b) hereof has provision in any of its authorized securities or in its
certificate of incorporation or by-laws or other instrument governing its
corporate affairs, which provision would have the effect of (i) causing such
Principal Party to issue (other than to holders of Rights pursuant to Section
13 hereof), in connection with, or as a consequence of, the consummation of a
Section 13 Event, Common Shares or


                                      -24-

<PAGE>

Equivalent Shares of such Principal Party at less than the then Current Per
Share Market Price thereof or securities exercisable for, or convertible into,
Common Shares or Equivalent Shares of such Principal Party at less than such
then Current Per Share Market Price, or (ii) providing for any special
payment, tax or similar provision in connection with the issuance of the
Common Shares of such Principal Party pursuant to the provisions of Section 13
hereof, then, in such event, the Company hereby agrees with each holder of
Rights that it shall not consummate any such transaction unless prior thereto
the Company and such Principal Party shall have executed and delivered to the
Rights Agent a supplemental agreement providing that the provision in question
of such Principal Party shall have been canceled, waived or amended, or that
the authorized securities shall be redeemed, so that the applicable provision
will have no effect in connection with or as a consequence of, the
consummation of the proposed transaction.

              (e)    The Company covenants and agrees that it shall not, at
any time after the Distribution Date, effect or permit to occur any Section 13
Event, if (i) at the time or immediately after such Section 13 Event there are
any rights, warrants or other instruments or securities outstanding or
agreements in effect which would substantially diminish or otherwise eliminate
the benefits intended to be afforded by the Rights, (ii) prior to,
simultaneously with or immediately after such Section 13 Event, the
stockholders of the Person who constitutes, or would constitute, the
"Principal Party" for purposes of Section 13(b) hereof shall have received a
distribution of Rights previously owned by such Person or any of its
Affiliates or Associates or (iii) the form or nature of organization of the
Principal Party would preclude or limit the exercisability of the Rights.

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

       Section 14.   FRACTIONAL RIGHTS AND FRACTIONAL SHARES.

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

              (b)    The Company shall not be required to issue fractions of
Preferred Shares (other than fractions that are integral multiples of one
one-thousandth of a Preferred Share) upon exercise of the Rights or to
distribute certificates which evidence fractional Preferred Shares (other than
fractions that are integral multiples of one one-thousandth of a Preferred
Share). Interests in fractions of Preferred Shares in integral multiples of
one one-thousandth of a Preferred Share may, at the election of the Company,
be evidenced by depositary receipts, pursuant to an appropriate agreement
between the Company and a depositary selected by it; PROVIDED, that such
agreement shall provide that the holders of such depositary receipts shall
have all the rights, privileges and preferences to which they are entitled as
beneficial owners of the Preferred Shares represented by


                                      -25-

<PAGE>

such depositary receipts.  In lieu of fractional Preferred Shares that are not
integral multiples of one one-thousandth of a Preferred Share, the Company
shall pay to the registered holders of Rights Certificates at the time such
Rights are exercised as herein provided an amount in cash equal to the same
fraction of the current market value of a Preferred Share.  For purposes of
this Section 14(b), the current market value of a Preferred Share shall be the
product equal to (x) one thousandth multiplied by (y) the closing price of a
Common Share (as determined pursuant to the second sentence of Section 1(j)
hereof) for the Trading Day immediately prior to the date of such exercise.

              (c)    The Company shall not be required to issue fractions of
Common Shares or to distribute certificates which evidence fractional Common
Shares upon the exercise or exchange of Rights.  In lieu of such fractional
Common Shares, the Company shall pay to the registered holders of Rights
Certificates at the time such Rights are exercised as herein provided an
amount in cash equal to the same fraction of the current market value of a
Common Share.  For purposes of this Section 14(c), the current market value of
a Common Share shall be the closing price of a Common Share (as determined
pursuant to the second sentence of Section 1(j) hereof) for the Trading Day
immediately prior to the date of such exercise.

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

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

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

              (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 Rights Certificates are
transferable only on the registry books of the Rights Agent if surrendered at
the principal office or offices of the Rights


                                      -26-

<PAGE>

Agent designated for such purposes, duly endorsed or accompanied by a proper
instrument of transfer and with the appropriate forms and certificates fully
executed; and

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

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

       Section 18.   CONCERNING THE RIGHTS AGENT.

              (a)    The Company agrees to pay to the Rights Agent reasonable
compensation for all services rendered by it hereunder and, from time to time,
on demand of the Rights Agent, its reasonable expenses and counsel fees and
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 gross negligence,
bad faith or willful misconduct on the part of the Rights Agent, for anything
done or omitted by the Rights Agent in connection with the acceptance and
administration of this Agreement, including the costs and expenses of
defending against any claim of liability in the premises.  In no event will
the Rights Agent be liable for special, indirect, incidental or consequential
loss or damage of any kind whatsoever, even if the Rights Agent has been
advised of the possibility of such loss or damage.

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



                                      -27-
<PAGE>

       Section 19.   MERGER OR CONSOLIDATION OR CHANGE OF NAME OF RIGHTS AGENT.

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

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

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

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

              (b)    Whenever in the performance of its duties under this
Agreement the Rights Agent shall deem it necessary or desirable that any fact or
matter (including, without limitation, the identity of any Acquiring Person and
the determination of Current Per Share Market Price) be proved or established by
the Company prior to taking or suffering any action hereunder, such fact or
matter (unless other evidence in respect thereof be herein specifically
prescribed) may be deemed to be conclusively proved and established by a
certificate signed by any one of the Chairman of the Board, the Chief Executive
Officer, the President, any Vice President, the Chief Financial Officer, the
Secretary or any Assistant Secretary of the Company and delivered to the Rights
Agent; and such certificate shall be full authorization to the Rights Agent for
any action taken or suffered in good faith by it under the provisions of this
Agreement in reliance upon such certificate.

                                      -28-
<PAGE>


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

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

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

              (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, any Vice President, the Chief Financial Officer, the Secretary or any
Assistant Secretary of the Company, and to apply to such officers for advice or
instructions in connection with its duties, and it shall not be liable for any
action taken or suffered by it in good faith in accordance with instructions of
any such officer or for any delay in acting while waiting for those
instructions.  Any application by the Rights Agent for written instructions from
the Company may, at the option of the Rights Agent, set forth in writing any
action proposed to be taken or omitted by the Rights Agent under this Amended
and Restated Rights Agreement and the date on and/or after which such action
shall be taken or such omission shall be effective.  The Rights Agent shall not
be liable for any action taken by, or omission of, the Rights Agent in
accordance with a proposal included in any such application on or after the date
specified in such application (which date shall not be less than five (5)
Business Days after the date on which any officer of the Company actually
receives such application, unless any such officer shall have consented in
writing to an earlier date) unless, prior to taking any such action (or the
effective date in the case of an omission),

                                      -29-
<PAGE>


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

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

                                      -30-
<PAGE>


the United States or of any state of the United States, in good standing,
which is authorized under such laws to exercise corporate trust or
stockholder services powers and is subject to supervision or examination by
federal or state authority and which has at the time of its appointment as
Rights Agent a combined capital and surplus of at least $100 million.  After
appointment, the successor Rights Agent shall be vested with the same powers,
rights, duties and responsibilities as if it had been originally named as
Rights Agent without further act or deed; but the predecessor Rights Agent
shall deliver and transfer to the successor Rights Agent any property at the
time held by it hereunder, and execute and deliver any further assurance,
conveyance, act or deed necessary for the purpose.  Not later than the
effective date of any such appointment, the Company shall file notice thereof
in writing with the predecessor Rights Agent and each transfer agent of the
Preferred Shares and the Common Shares, and mail a notice thereof in writing
to the registered holders of the Rights Certificates.  Failure to give any
notice provided for in this Section 21, however, or any defect therein, shall
not affect the legality or validity of the resignation or removal of the
Rights Agent or the appointment of the successor Rights Agent, as the case
may be.

       Section 22.   ISSUANCE OF NEW RIGHTS CERTIFICATES.  Notwithstanding any
of the provisions of this Agreement or of the Rights to the contrary, the
Company may, at its option, issue new Rights Certificates evidencing Rights in
such form as may be approved by its Board of Directors to reflect any adjustment
or change in the Exercise Price and the number or kind or class of shares or
other securities or property purchasable under the Rights Certificates made in
accordance with the provisions of this Agreement.  In addition, in connection
with the issuance or sale of Common Shares following the Distribution Date and
prior to the redemption or expiration of the Rights, the Company (a) shall, with
respect to Common Shares so issued or sold pursuant to the exercise of stock
options or under any employee plan or arrangement or upon the exercise,
conversion or exchange of other securities of the Company outstanding at the
date hereof or upon the exercise, conversion or exchange of securities
hereinafter issued by the Company and (b) may, in any other case, if deemed
necessary or appropriate by the Board of Directors of the Company, issue Rights
Certificates representing the appropriate number of Rights in connection with
such issuance or sale; PROVIDED, HOWEVER, that (i) no such Rights Certificate
shall be issued and this sentence shall be null and void AB INITIO if, and to
the extent that, such issuance or this sentence would create a significant risk
of or result in material adverse tax consequences to the Company or the Person
to whom such Rights Certificate would be issued or would create a significant
risk of or result in such options' or employee plans' or arrangements' failing
to qualify for otherwise available special tax treatment and (ii) no such Rights
Certificate shall be issued if, and to the extent that, appropriate adjustment
shall otherwise have been made in lieu of the issuance thereof.

       Section 23.   REDEMPTION.

              (a)    The Company may, at its option and with the approval of the
Board of Directors, at any time prior to the Close of Business on the earlier of
(i) the fifth day following the Shares Acquisition Date (or such later date as
may be determined by action of the Company's Board of Directors and publicly
announced by the Company) and (ii) the Final Expiration Date, redeem all but not
less than all the then outstanding Rights at a redemption price of $0.001 per
Right, appropriately adjusted to reflect any stock split, stock dividend or
similar transaction occurring after

                                      -31-
<PAGE>


the date hereof (such redemption price being herein referred to as the
"REDEMPTION PRICE") and the Company may, at its option, pay the Redemption
Price either in Common Shares (based on the Current Per Share Market Price
thereof at the time of redemption) or cash.  Such redemption of the Rights by
the Company may be made effective at such time, on such basis and with such
conditions as the Board of Directors in its sole discretion may establish.
The date on which the Board of Directors elects to make the redemption
effective shall be referred to as the "REDEMPTION DATE."

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

       Section 24.   EXCHANGE.

              (a)    Subject to applicable laws, rules and regulations, and
subject to subsection 24(c) below, the Company may, at its option, by action of
the Board of Directors, at any time after the occurrence of a Triggering Event,
exchange all or part of the then outstanding and exercisable Rights (which shall
not include Rights that have become void pursuant to the provisions of
Section 7(e) hereof) for Common Shares at an exchange ratio of one Common Share
per Right, appropriately adjusted to reflect any stock split, stock dividend or
similar transaction occurring after the date hereof (such exchange ratio being
hereinafter referred to as the "EXCHANGE RATIO").  Notwithstanding the
foregoing, the Board of Directors shall not be empowered to effect such exchange
at any time after any Person (other than the Company, any Subsidiary of the
Company, any employee benefit plan of the Company or any such Subsidiary, or any
entity holding Common Shares for or pursuant to the terms of any such plan),
together with all Affiliates and Associates of such Person, becomes the
Beneficial Owner of 50% or more of the Common Shares then outstanding.

              (b)    Immediately upon the action of the Board of Directors
ordering the exchange of any Rights pursuant to subsection 24(a) of this
Section 24 and without any further action and without any notice, the right to
exercise such Rights shall terminate and the only right thereafter of a

                                      -32-
<PAGE>


holder of such Rights shall be to receive that number of Common Shares equal
to the number of such Rights held by such holder multiplied by the Exchange
Ratio.  The Company shall give public notice of any such exchange; PROVIDED,
HOWEVER, that the failure to give, or any defect in, such notice shall not
affect the validity of such exchange.  The Company shall mail a notice of any
such exchange to all of the holders of such Rights at their last addresses as
they appear upon the registry books of the Rights Agent.  Any notice which is
mailed in the manner herein provided shall be deemed given, whether or not
the holder receives the notice.  Each such notice of exchange will state the
method by which the exchange of the Common Shares for Rights will be effected
and, in the event of any partial exchange, the number of Rights which will be
exchanged.  Any partial exchange shall be effected pro rata based on the
number of Rights (other than Rights which have become void pursuant to the
provisions of Section 7(e) hereof) held by each holder of Rights.

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

              (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, there shall be paid to the
registered holders of the Rights Certificates with regard to which such
fractional Common Shares would otherwise be issuable, an amount in cash equal to
the same fraction of the current market value of a whole Common Share (as
determined pursuant to the second sentence of Section 1(j) hereof).

              (e)    The Company may, at its option, by majority vote of the
Board of Directors, at any time before any Person has become an Acquiring
Person, exchange all or part of the then

                                      -33-
<PAGE>


outstanding Rights for rights of substantially equivalent value, as
determined reasonably and with good faith by the Board of Directors based
upon the advice of one or more nationally recognized investment banking
firms.

              (f)    Immediately upon the action of the Board of Directors
ordering the exchange of any Rights pursuant to subsection 24(e) of this
Section 24 and without any further action and without any notice, the right to
exercise such Rights shall terminate and the only right thereafter of a holder
of such Rights shall be to receive that number of rights in exchange therefor as
has been determined by the Board of Directors in accordance with
subsection 24(e) above.  The Company shall give public notice of any such
exchange; PROVIDED, HOWEVER, that the failure to give, or any defect in, such
notice shall not affect the validity of such exchange.  The Company shall mail a
notice of any such exchange to all of the holders of such Rights at their last
addresses as they appear upon the registry books of the transfer agent for the
Common Shares of the Company.  Any notice which is mailed in the manner herein
provided shall be deemed given, whether or not the holder receives the notice.
Each such notice of exchange will state the method by which the exchange of the
Rights will be effected.

       Section 25.   NOTICE OF CERTAIN EVENTS.

              (a)    In case the Company shall propose to effect or permit to
occur any Triggering Event or Section 13 Event, the Company shall give notice
thereof to each holder of Rights in accordance with Section 26 hereof at least
twenty (20) days prior to occurrence of such Triggering Event or such Section 13
Event.

              (b)    In case any Triggering Event or Section 13 Event shall
occur, then, in any such case, the Company shall as soon as practicable
thereafter give to each holder of a Rights Certificate, in accordance with
Section 26 hereof, a notice of the occurrence of such event, which shall specify
the event and the consequences of the event to holders of Rights under
Sections 11(a)(ii) and 13 hereof.

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

                            Cell Genesys, Inc.
                            322 Lakeside Drive
                            Foster City, CA  94404
                            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 Rights Certificate to or on the Rights Agent shall be sufficiently given
or made if sent by first-class mail, postage prepaid, addressed (until another
address is filed in writing with the Company) as follows:

                                      -34-
<PAGE>


                            FLEET NATIONAL BANK
                            150 Royall Street
                            Canton, MA 02021

                            Attention: Shareholder Services Division

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

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

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

       Section 29.   DETERMINATIONS AND ACTIONS BY THE BOARD OF DIRECTORS, ETC.
For all purposes of this agreement, any calculation of the number of Common
Shares outstanding at any particular time, including for purposes of determining
the particular percentage of such outstanding Common Shares of which any Person
is the Beneficial Owner, shall be made in accordance with the last sentence of
Rule 13d-3(d)(1)(i) of the General Rules and Regulations under the Exchange Act.
The Board of Directors of the Company 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

                                      -35-
<PAGE>


limitation, the right and power (i) to interpret the provisions of this
Agreement and (ii) to 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 Company, the Rights Agent, the holders of the Rights
Certificates and all other parties and (y) not subject the Board or the
Continuing Directors to any liability to the holders of the Rights.

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

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

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

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

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

                                      -36-
<PAGE>


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

"COMPANY"                          Cell Genesys, Inc.

                                   By:  /s/ Matthew J. Pfeffer

                                   Name:  Matthew J. Pfeffer

                                   Title:  Chief Financial Officer and Assistant
                                           Secretary

"RIGHTS AGENT"                     FLEET NATIONAL BANK

                                   By:/s/ Katherine S. Anderson

                                   Name:  Katherine S. Anderson

                                   Title:  Senior Managing Director

                                          Client Services



                                      -37-
<PAGE>


                                      EXHIBIT A

         FORM OF AMENDED CERTIFICATE OF DESIGNATION OF RIGHTS, PREFERENCES
                                AND PRIVILEGES OF
                      SERIES A PARTICIPATING PREFERRED STOCK
                              OF CELL GENESYS, INC.

             (No shares of the class or series of stock have been issued)


       The undersigned, ___________________ and _____________________ do hereby
certify:

       1.   That they are the duly elected and acting President and Assistant
Secretary, respectively, of Cell Genesys, Inc., a Delaware corporation (the
"CORPORATION").

       2.   That the Certificate of Designations of Rights, Preferences and
Privileges of Series A Participating Preferred Stock of Cell Genesys, Inc.,
was originally filed with the Secretary of the State of Delaware on August 4,
1995 and is now being amended and restated in the following form.

       3.   That pursuant to the authority conferred upon the Board of
Directors by the Restated Certificate of Incorporation of the said
Corporation, the said Board of Directors on July 26, 2000 adopted the
following resolution amending the rights, preferences, and privileges of the
series of 200,000 shares of Preferred Stock designated as Series A
Participating Preferred Stock:

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

       Section 1.    DESIGNATION AND AMOUNT.  The shares of such series shall
be designated as "SERIES A PARTICIPATING PREFERRED STOCK." The Series A
Participating Preferred Stock shall have a par value of $0.001 per share, and
the number of shares constituting such series shall be 200,000.

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

<PAGE>

       Section 3.    DIVIDENDS AND DISTRIBUTIONS.

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

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

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

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

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


                                      -2-

<PAGE>

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

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

       Section 5.    CERTAIN RESTRICTIONS.

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

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

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

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

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

                     (iv)   purchase or otherwise acquire for consideration
any shares of Series A Participating Preferred Stock, or any shares of stock
ranking on a parity with the Series A Participating Preferred Stock, except in
accordance with a purchase offer made in writing or by publication (as
determined by the Board of Directors) to all holders of such shares upon such
terms as the Board of Directors, after consideration of the respective annual
dividend rates and other


                                      -3-

<PAGE>

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.

              (c)    The Corporation shall not permit any subsidiary of the
Corporation to purchase or otherwise acquire for consideration any shares of
stock of the Corporation unless the Corporation could, under paragraph (a) of
this Section 5, purchase or otherwise acquire such shares at such time and in
such manner.

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

       Section 7.    LIQUIDATION, DISSOLUTION OR WINDING UP.  Upon any
liquidation, dissolution or winding up of the Corporation, the holders of
shares of Series A Participating Preferred Stock shall be entitled to receive
an aggregate amount per share equal to 1,000 times the aggregate amount to be
distributed per share to holders of shares of Common Stock plus an amount
equal to any accrued and unpaid dividends on such shares of Series A
Participating Preferred Stock.

       Section 8.    CONSOLIDATION, MERGER, ETC.  In case the Corporation
shall enter into any consolidation, merger, combination or other transaction
in which the shares of Common Stock are exchanged for or changed into other
stock or securities, cash and/or any other property, then in any such case the
shares of Series A Participating Preferred Stock shall at the same time be
similarly exchanged or changed in an amount per share equal to 1,000 times the
aggregate amount of stock, securities, cash and/or any other property (payable
in kind), as the case may be, into which or for which each share of Common
Stock is changed or exchanged.

       Section 9.    NO REDEMPTION.  The shares of Series A Participating
Preferred Stock shall not be redeemable.

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

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

       Section 12.   FRACTIONAL SHARES.  Series A Participating Preferred
Stock may be issued in fractions of a share which shall entitle the holder, in
proportion to such holder's fractional shares, to


                                      -4-

<PAGE>

exercise voting rights, receive dividends, participate in distributions and to
have the benefit of all other rights of holders of Series A Participating
Preferred Stock.

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

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

       Executed at Foster City, California on ___________, 2000.




                                                 ------------------------------
                                                 President


                                                 ------------------------------
                                                 Secretary






                                      -5-

<PAGE>



                                     EXHIBIT B

                             FORM OF RIGHTS CERTIFICATE

Certificate No. R-                                             _________ Rights


       NOT EXERCISABLE AFTER THE EARLIER OF (i) JULY 27, 2010, (ii) THE
       DATE TERMINATED BY THE COMPANY OR (iii) THE DATE THE COMPANY
       EXCHANGES THE RIGHTS PURSUANT TO THE AMENDED AND RESTATED RIGHTS
       AGREEMENT. THE RIGHTS ARE SUBJECT TO REDEMPTION, AT THE OPTION OF
       THE COMPANY, AT $0.001 PER RIGHT ON THE TERMS SET FORTH IN THE
       AMENDED AND RESTATED RIGHTS AGREEMENT. UNDER CERTAIN
       CIRCUMSTANCES, RIGHTS BENEFICIALLY OWNED BY AN ACQUIRING PERSON OR
       AN AFFILIATE OR ASSOCIATE OF AN ACQUIRING PERSON (AS SUCH TERMS
       ARE DEFINED IN THE AMENDED AND RESTATED RIGHTS AGREEMENT) AND ANY
       SUBSEQUENT HOLDER OF SUCH RIGHTS MAY BECOME NULL AND VOID. [THE
       RIGHTS REPRESENTED BY THIS RIGHTS CERTIFICATE ARE OR WERE
       BENEFICIALLY OWNED BY A PERSON WHO WAS OR BECAME AN ACQUIRING
       PERSON OR AN AFFILIATE OR ASSOCIATE OF AN ACQUIRING PERSON (AS
       SUCH TERMS ARE DEFINED IN THE AMENDED AND RESTATED RIGHTS
       AGREEMENT). ACCORDINGLY, THIS RIGHTS CERTIFICATE AND THE RIGHTS
       REPRESENTED HEREBY MAY BECOME NULL AND VOID IN THE CIRCUMSTANCES
       SPECIFIED IN SECTION 7(e) OF SUCH AMENDED AND RESTATED RIGHTS
       AGREEMENT.]*


                                 RIGHTS CERTIFICATE

                                CELL GENESYS, 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 Amended and Restated Rights Agreement dated as of July __,
2000, (the "RIGHTS AGREEMENT"), between Cell Genesys, Inc., a Delaware
corporation (the "COMPANY"), and Fleet National Bank, a national banking
association, ( the "RIGHTS AGENT"), to purchase from the Company at any time
after the Distribution Date (as such term is defined in the Rights Agreement)
and prior to 5:00 P.M., New York time, on July __, 2010 at


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

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

<PAGE>

the office of the Rights Agent designated for such purpose, or at the office
of its successor as Rights Agent, one one-thousandth (1/1,000) of a fully paid
and non-assessable share of Series A Participating Preferred Stock, par value
$0.001 per share (the "PREFERRED SHARES"), of the Company, at an Exercise
Price of Three Hundred Dollars ($300.00) per one-thousandth of a Preferred
Share (the "EXERCISE PRICE"), upon presentation and surrender of this Rights
Certificate with the Form of Election to Purchase and related Certificate duly
executed.  The number of Rights evidenced by this Rights Certificate (and the
number of one-thousandths of a Preferred Share which may be purchased upon
exercise hereof) set forth above are the number and Exercise Price as of July
__, 2000 based on the Preferred Shares as constituted at such date.  As
provided in the Rights Agreement, the Exercise Price and the number and kind
of Preferred Shares or other securities which may be purchased upon the
exercise of the Rights evidenced by this Rights Certificate are subject to
modification and adjustment upon the happening of certain events.

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

              Subject to the provisions of the Rights Agreement, the Rights
evidenced by this Rights Certificate (i) may be redeemed by the Company, at
its option, at a redemption price of $0.001 per Right or (ii) may be exchanged
by the Company in whole or in part for Common Shares, substantially equivalent
rights or other consideration as determined by the Company.

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

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

              No holder of this Rights Certificate, as such, shall be entitled
to vote or receive dividends or be deemed for any purpose the holder of the
Preferred Shares or of any other securities of the Company which may at any
time be issuable on the exercise hereof, nor shall anything contained in the
Rights Agreement or herein be construed to confer upon the holder hereof, as
such, any of the rights of a stockholder of the Company or any right to vote
for the election of directors or upon any matter submitted to stockholders at
any meeting thereof, or to give or withhold consent to


                                      -2-

<PAGE>

any corporate action, or to receive notice of meetings or other actions
affecting stockholders (except as provided in the Rights Agreement), or to
receive dividends or subscription rights, or otherwise, until the Right or
Rights evidenced by this Rights Certificate shall have been exercised as
provided in the Rights Agreement.

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

       WITNESS the facsimile signature of the proper officers of the Company
and its corporate seal.  Dated as of  _______________, 2000.


ATTEST:                                        CELL GENESYS, INC.


                                               By:
------------------------------                    -----------------------------
Secretary

                                               Its:
                                                   ----------------------------

Countersigned:

FLEET NATIONAL BANK
as Rights Agent

By:
   ---------------------------

Its:
    --------------------------








                                      -3-

<PAGE>

                     FORM OF REVERSE SIDE OF RIGHTS CERTIFICATE

                                 FORM OF ASSIGNMENT

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


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


Dated: _______________, ____




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

Signature Guaranteed:

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

<PAGE>

                                     CERTIFICATE

       The undersigned hereby certifies by checking the appropriate boxes that:

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

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

Dated: _______________, ____



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




Signature Guaranteed:

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

<PAGE>


              FORM OF REVERSE SIDE OF RIGHTS CERTIFICATE -- CONTINUED

                            FORM OF ELECTION TO PURCHASE

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

To:___________________________


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

Please insert social security
or other identifying number


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

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

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

Please insert social security
or other identifying number


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

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



Dated: _______________, ____


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



Signature Guaranteed:

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

<PAGE>

                                     CERTIFICATE

       The undersigned hereby certifies by checking the appropriate boxes that:

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

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

Dated: _______________, ____


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



Signature Guaranteed:

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

<PAGE>

              FORM OF REVERSE SIDE OF RIGHTS CERTIFICATE -- CONTINUED

                                       NOTICE

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

<PAGE>


                                      EXHIBIT C

              AMENDED AND RESTATED PREFERRED SHARES RIGHTS AGREEMENT
                                 CELL GENESYS, INC.

       On July 20, 1995, The Board of Directors declared a dividend of one
Right for each share of Common Stock of Cell Genesys, Inc. (the "COMPANY")
outstanding as of August 21, 1995 (the "RECORD DATE") and further authorized
the issuance of one Right for each Common Share that shall become outstanding
between the Record Date and the earlier of the Distribution Date and the
Expiration Date.  On July 26, 2000, the Board of Directors determined that it
is in the best interest of the Company to amend and restate the Preferred
Shares Rights Agreement to provide as follows:

                                 SUMMARY OF RIGHTS


 DISTRIBUTION AND TRANSFER  Prior to the Distribution Date referred to below,
 OF RIGHTS; RIGHTS          the Rights will continue to be evidenced by and
 CERTIFICATE:               trade with the certificates for the Common Stock.
                            After the Distribution Date, the Company will mail
                            Rights certificates to the Company's stockholders
                            and the Rights will become transferable apart from
                            the Common Stock.

 DISTRIBUTION DATE:         Rights will separate from the Common Stock and
                            become exercisable following (a) the tenth day (or
                            such later date as may be determined by the
                            Company's Board of Directors) after a person or
                            group acquires beneficial ownership of 15% or more
                            of the Company's Common Stock or (b) the tenth
                            business day (or such later date as may be
                            determined by the Company's Board of Directors)
                            after a person or group announces a tender or
                            exchange offer, the consummation of which would
                            result in ownership by a person or group of 15% or
                            more of the Company's Common Stock.

 PREFERRED STOCK            After the Distribution Date, each Right will
 PURCHASABLE UPON EXERCISE  entitle the holder to purchase for $300 (the
 OF RIGHTS:                 "EXERCISE PRICE"), a fraction of a share of the
                            Company's Preferred Stock with economic terms
                            similar to that of one share of the Company's
                            Common Stock.

 FLIP-IN:                   If an acquiror (an "ACQUIRING PERSON") obtains 15%
                            or more of the Company's Common Stock, THEN each
                            Right (other than Rights owned by an Acquiring
                            Person or its affiliates) will entitle the holder
                            thereof to purchase, for the Exercise Price, a
                            number of shares of the Company's Common Stock
                            having a then-current market value of twice the
                            Exercise Price.

 FLIP-OVER:                 If, after an Acquiring Person obtains 15% or more
                            of the


<PAGE>


                            Company's Common Stock, (a) the Company
                            merges into another entity, (b) an acquiring
                            entity merges into the Company or (c) the Company
                            sells more than 50% of the Company's assets or
                            earning power, THEN each Right (other than Rights
                            owned by an Acquiring Person or its affiliates)
                            will entitle the holder thereof to purchase, for
                            the Exercise Price, a number of shares of Common
                            Stock of the person engaging in the transaction
                            having a then current market value of twice the
                            Exercise Price.

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

 REDEMPTION OF THE RIGHTS:  Rights will be redeemable at the Company's option
                            for $0.001 per Right at any time on or prior to
                            the fifth day (or such later date as may be
                            determined by the Company's Board of Directors)
                            after public announcement that a Person has
                            acquired beneficial ownership of 15% or more of
                            the Company's Common Stock (the "SHARES
                            ACQUISITION DATE").

 EXPIRATION OF THE RIGHTS:  The Rights expire on the earliest of (a) July 27,
                            2010 or (b) exchange or redemption of the Rights
                            as described above.


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

 VOTING RIGHTS:             Rights will not have any voting rights.

 ANTI-DILUTION PROVISIONS:  Rights will have the benefit of certain customary
                            anti-dilution provisions.

                                      -2-
<PAGE>


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


The foregoing is a summary of certain principal terms of the Amended and
Restated Preferred Shares Rights Agreement.  It may be amended from time to
time.  A copy of the Amended and Restated Preferred Share Rights Agreement will
be filed with the Securities and Exchange Commission as an Exhibit to a
Registration Statement on Form 8-A/A dated July 28, 2000.  A copy of the Amended
and Restated Preferred Shares Rights Agreement is available free of charge from
the Company.

                                      -3-


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