FORTE SOFTWARE INC \DE\
8-A12G, 1997-05-19
PREPACKAGED SOFTWARE
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                    Form 8-A


                For Registration of Certain Classes of Securities
                     Pursuant to Section 12(b) or (g) of the
                         Securities Exchange Act of 1934



                              FORTE SOFTWARE, INC.
- --------------------------------------------------------------------------------
             (Exact Name of Registrant as Specified in its Charter)


                Delaware                                          94-3131872
- ----------------------------------------                    --------------------
(State of Incorporation or Organization)                      (I.R.S. Employer
                                                             Identification No.)
         1800 Harrison Street
         Oakland, California                                        94612
- ----------------------------------------                    --------------------
(Address of Principal Executive Offices)                         (Zip Code)

If this Form relates to the registration      If this Form relates to the       
of a class of debt securities and is          registration of a class of debt   
effective upon filing pursuant to General     securities and is to become       
Instruction A(c)(1) please check the          effective simultaneously with the 
following box.                                effectiveness of a concurrent     
[ ]                                           registration statement under the  
                                              Securities Act of 1933 pursuant to
                                              General Instruction A(c)(2) please
                                              check the following box.          
                                              [ ]


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

    Title of Each Class                       Name of Each Exchange on Which
    to be so Registered                       Each Class is to be Registered

       Not Applicable                                 Not Applicable
- ----------------------------              --------------------------------------


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

                         Preferred Share Purchase Rights
- --------------------------------------------------------------------------------
                                (Title of Class)


<PAGE>

Item 1.           Description of Registrant's Securities to be Registered.

                  On May 16, 1997,  the Board of  Directors  of Forte  Software,
Inc. (the  "Company")  declared a dividend of one preferred share purchase right
(a  "Right")  for each  outstanding  share of common  stock,  par value $.01 per
share, of the Company (the "Common  Stock").  The dividend is payable on June 3,
1997 (the "Record Date") to the  stockholders of record on that date. Each Right
entitles the registered  holder to purchase from the Company one  one-thousandth
of a share of Series A Junior Participating  Preferred Stock, par value $.01 per
share,  of the  Company  (the  "Preferred  Stock") at a price of $125.00 per one
one-thousandth of a share of Preferred Stock (the "Purchase Price"),  subject to
adjustment.  The  description  and terms of the Rights are set forth in a Rights
Agreement dated as of May 16, 1997, as the same may be amended from time to time
(the "Rights  Agreement"),  between the Company and BankBoston,  N.A., as Rights
Agent (the "Rights Agent").

                  Until the  earlier to occur of (i) 10 days  following a public
announcement  that a person or group of affiliated  or associated  persons (with
certain exceptions,  an "Acquiring Person") has acquired beneficial ownership of
15% or more of the  outstanding  shares of Common Stock or (ii) 10 business days
(or such later  date as may be  determined  by action of the Board of  Directors
prior to such  time as any  person or group of  affiliated  persons  becomes  an
Acquiring Person) following the commencement of, or announcement of an intention
to make, a tender offer or exchange offer the consummation of which would result
in the  beneficial  ownership  by a  person  or  group  of 15%  or  more  of the
outstanding  shares of Common  Stock (the earlier of such dates being called the
"Distribution  Date"), the Rights will be evidenced,  with respect to any of the
Common Stock  certificates  outstanding  as of the Record  Date,  by such Common
Stock certificate  together with a copy of the Summary of Rights attached to the
Rights Agreement as Exhibit C.

                  The Rights  Agreement  provides that,  until the  Distribution
Date (or earlier expiration of the Rights),  the Rights will be transferred with
and only  with  the  Common  Stock.  Until  the  Distribution  Date (or  earlier
expiration of the Rights), new Common Stock certificates issued after the Record
Date upon  transfer or new  issuances  of Common  Stock will  contain a notation
incorporating the Rights Agreement by reference. Until the Distribution Date (or
earlier   expiration  of  the  Rights),   the  surrender  for  transfer  of  any
certificates for shares of Common Stock  outstanding as of the Record Date, even
without such notation or a copy of this Summary of Rights,  will also constitute
the  transfer  of  the  Rights  associated  with  the  shares  of  Common  Stock
represented  by  such  certificate.   As  soon  as  practicable   following  the
Distribution  Date,   separate   certificates   evidencing  the  Rights  ("Right
Certificates") will be mailed to holders of record of the Common Stock as of the
close of business on the Distribution Date and such separate Right  Certificates
alone will evidence the Rights.

                  The Rights are not exercisable  until the  Distribution  Date.
The Rights will expire on May 16, 2007 (the "Final Expiration Date"), unless the
Final  Expiration  Date is advanced or extended or unless the Rights are earlier
redeemed or exchanged by the Company, in each case as described below.

                  The  Purchase  Price  payable,  and the  number  of  shares of
Preferred Stock or other securities or property  issuable,  upon exercise of the
Rights is subject to adjustment from time to 

                                       2

<PAGE>

time  to  prevent  dilution  (i) in the  event  of a  stock  dividend  on,  or a
subdivision,  combination or reclassification of, the Preferred Stock, (ii) upon
the grant to holders of the  Preferred  Stock of certain  rights or  warrants to
subscribe for or purchase Preferred Stock at a price, or securities  convertible
into Preferred Stock with a conversion price, less than the then-current  market
price of the Preferred  Stock or (iii) upon the  distribution  to holders of the
Preferred  Stock of  evidences  of  indebtedness  or assets  (excluding  regular
periodic  cash  dividends  or  dividends  payable  in  Preferred  Stock)  or  of
subscription rights or warrants (other than those referred to above).

                  The number of  outstanding  Rights is subject to adjustment in
the event of a stock  dividend on the Common  Stock  payable in shares of Common
Stock or  subdivisions,  consolidations  or  combinations  of the  Common  Stock
occurring, in any such case, prior to the Distribution Date.

                  Shares of Preferred  Stock  purchasable  upon  exercise of the
Rights will not be redeemable.  Each share of Preferred  Stock will be entitled,
when, as and if declared,  to a minimum preferential  quarterly dividend payment
of $10 per share but will be entitled to an aggregate dividend of 1000 times the
dividend  declared  per share of  Common  Stock.  In the  event of  liquidation,
dissolution  or winding up of the Company,  the holders of the  Preferred  Stock
will be entitled to a minimum  preferential payment of $1000 per share (plus any
accrued but unpaid  dividends)  but will be entitled to an aggregate  payment of
1000 times the payment made per share of Common  Stock.  Each share of Preferred
Stock will have 1000 votes,  voting together with the Common Stock.  Finally, in
the event of any merger, consolidation or other transaction in which outstanding
shares of Common Stock are converted or exchanged, each share of Preferred Stock
will be entitled to receive  1000 times the amount  received per share of Common
Stock. These rights are protected by customary antidilution provisions.

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

                  In the  event  that  any  person  or group  of  affiliated  or
associated  persons becomes an Acquiring Person,  each holder of a Right,  other
than Rights  beneficially  owned by the Acquiring  Person (which will  thereupon
become void), will thereafter have the right to receive upon exercise of a Right
that  number of shares of Common  Stock  having a market  value of two times the
exercise price of the Right.

                  In the  event  that,  after a person  or group  has  become an
Acquiring  Person,  the  Company  is  acquired  in a merger  or  other  business
combination  transaction  or 50% or more of its  consolidated  assets or earning
power are sold,  proper  provisions  will be made so that each holder of a Right
(other than Rights  beneficially  owned by an  Acquiring  Person which will have
become  void) will  thereafter  have the right to receive upon the exercise of a
Right that number of shares of common  stock of the person with whom the Company
has engaged in the  foregoing  transaction  (or its parent)  that at the time of
such  transaction  have a market  value of two times the  exercise  price of the
Right.

                  At any time  after any person or group  becomes  an  Acquiring
Person and prior to the earlier of one of the events  described  in the previous
paragraph  or the  acquisition  by such  

                                       3

<PAGE>

Acquiring  Person of 50% or more of the outstanding  shares of Common Stock, the
Board of Directors  of the Company may  exchange  the Rights  (other than Rights
owned by such  Acquiring  Person  which will have become  void),  in whole or in
part,  for  shares  of  Common  Stock or  Preferred  Stock  (or a series  of the
Company's preferred stock having equivalent rights, preferences and privileges),
at an exchange  ratio of one share of Common  Stock,  or a  fractional  share of
Preferred  Stock (or other  preferred  stock)  equivalent in value thereto,  per
Right.

                  With certain  exceptions,  no adjustment in the Purchase Price
will be required until cumulative  adjustments require an adjustment of at least
1% in such Purchase  Price.  No fractional  shares of Preferred  Stock or Common
Stock will be issued (other than fractions of Preferred Stock which are integral
multiples of one one-thousandth of a share of Preferred Stock, which may, at the
election of the  Company,  be  evidenced by  depositary  receipts),  and in lieu
thereof an adjustment in cash will be made based on the current  market price of
the Preferred Stock or the Common Stock.

                  At any  time  prior to the time an  Acquiring  Person  becomes
such, the Board of Directors of the Company may redeem the Rights in whole,  but
not in part, at a price of $.01 per Right (the "Redemption Price"),  payable, at
the option of the Company, in cash, shares of Common Stock or such other form of
consideration  as the Board of Directors  of the Company  shall  determine.  The
redemption  of the Rights 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.  Immediately upon any redemption of the Rights, the right to exercise
the Rights will terminate and the only right of the holders of Rights will be to
receive the Redemption Price.

                  For so long as the Rights  are then  redeemable,  the  Company
may, except with respect to the Redemption Price,  amend the Rights Agreement in
any manner.  After the Rights are no longer redeemable,  the Company may, except
with respect to the Redemption  Price,  amend the Rights Agreement in any manner
that does not adversely affect the interests of holders of the Rights.

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

                  This summary  description of the Rights does not purport to be
complete and is qualified in its entirety by reference to the Rights  Agreement,
which is attached hereto as Exhibit 1.


Item 2.           Exhibits.

Exhibit
Number              Description

1                   Rights  Agreement,  dated  as of May 16,  1997  between  the
                    Company and  BankBoston,  N.A,  including the Certificate of
                    Designation  of  Series  A  Junior  Participating  Preferred
                    Stock,  Form of Right  Certificate  and Summary of Rights to
                    Purchase  Preferred Shares attached thereto as Exhibits A, B
                    and C, respectively.


                                       4

<PAGE>

                                    SIGNATURE



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

                                             FORTE SOFTWARE, INC.



                                             Date:  May 19, 1997

                                             By:    /s/ Robert Gorlin
                                                    -------------------
                                             Name:  Robert Gorlin

                                             Title: Vice President and
                                                    General Counsel

                                       5

<PAGE>

                                    EXHIBITS



Exhibit
Number              Description

1                   Rights  Agreement,  dated  as of May 16,  1997  between  the
                    Company and BankBoston,  N.A.,  including the Certificate of
                    Designation  of  Series  A  Junior  Participating  Preferred
                    Stock,  Form of Right  Certificate  and Summary of Rights to
                    Purchase  Preferred Shares attached thereto as Exhibits A, B
                    and C, respectively.




                              FORTE SOFTWARE, INC.

                                       and

                        BANKBOSTON, N.A., as Rights Agent



                                RIGHTS AGREEMENT

                            Dated as of May 16, 1997


<PAGE>

                                TABLE OF CONTENTS



                                                                            Page
                                                                            ----
Section 1.   Certain Definitions............................................  1

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

Section 3.   Issue of Right Certificates....................................  6

Section 4.   Form of Right Certificates.....................................  7

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

Section 6.   Transfer, Split Up, Combination and Exchange of Right
             Certificates; Mutilated, Destroyed, Lost or Stolen Right
             Certificates...................................................  8

Section 7.   Exercise of Rights, Purchase Price; Expiration Date of Rights..  9

Section 8.   Cancellation and Destruction of Right Certificates............  10

Section 9.   Availability of Shares of Preferred Stock.....................  10

Section 10.  Preferred Stock Record Date...................................  11

Section 11.  Adjustment of Purchase Price, Number of Shares and Number
             of Rights.....................................................  12

Section 12.  Certificate of Adjusted Purchase Price or Number of Shares....  19

Section 13.  Consolidation, Merger or Sale or Transfer of Assets or
             Earning Power.................................................  19

Section 14.  Fractional Rights and Fractional Shares.......................  23

Section 15.  Rights of Action..............................................  24

Section 16.  Agreement of Right Holders....................................  24

Section 17.  Right Certificate Holder Not Deemed a Stockholder.............  25

Section 18.  Concerning the Rights Agent...................................  25


<PAGE>

Section 19.  Merger or Consolidation or Change of Name of Rights Agent.....  25

Section 20.  Duties of Rights Agent........................................  26

Section 21.  Change of Rights Agent........................................  28

Section 22.  Issuance of New Right Certificates............................  29

Section 23.  Redemption....................................................  29

Section 24.  Exchange......................................................  30

Section 25.  Notice of Certain Events......................................  31

Section 26.  Notices.......................................................  31

Section 27.  Supplements and Amendments....................................  32

Section 28.  Successors....................................................  32

Section 29.  Benefits of this Agreement....................................  32

Section 30.  Determinations and Actions by the Board of Directors..........  33

Section 31.  Severability..................................................  33

Section 32.  Governing Law.................................................  33

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

Section 34.  Descriptive Headings..........................................  33


<PAGE>

                                RIGHTS AGREEMENT


     Rights  Agreement,  dated as of May 16, 1997  ("Agreement"),  between Forte
Software, Inc., a Delaware corporation (the "Company"), and BankBoston, N.A., as
Rights Agent (the "Rights Agent").

     The Board of  Directors  of the  Company  has  authorized  and  declared  a
dividend of one  preferred  share  purchase  right (a "Right") for each share of
Common Stock (as hereinafter defined) of the Company outstanding as of the Close
of Business (as defined below) on June 3, 1997 (the "Record  Date"),  each Right
representing the right to purchase one one-thousandth (subject to adjustment) of
a share of Preferred Stock (as hereinafter defined),  upon the terms and subject
to the conditions herein set forth, and has further  authorized and directed the
issuance of one Right (subject to adjustment as provided herein) with respect to
each share of Common Stock 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);  provided,  however,  that Rights may be issued with
respect  to shares of Common  Stock  that  shall  become  outstanding  after the
Distribution  Date and prior to the Expiration  Date in accordance  with Section
22.

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

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

          (a)  "Acquiring  Person"  shall  mean  any  Person  (as  such  term is
hereinafter defined) who or which shall be the Beneficial Owner (as such term is
hereinafter  defined)  of 15% or  more  of  the  shares  of  Common  Stock  then
outstanding, but shall not include an Exempt Person (as such term is hereinafter
defined);  provided,  however, that (i) if the Board of Directors of the Company
determines  in good  faith that a Person who would  otherwise  be an  "Acquiring
Person" became such inadvertently  (including,  without limitation,  because (A)
such Person was unaware that it beneficially  owned a percentage of Common Stock
that would otherwise  cause such Person to be an "Acquiring  Person" or (B) such
Person was aware of the extent of its  Beneficial  Ownership of Common Stock 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 as promptly as practicable  divested or divests
itself of Beneficial  Ownership of a sufficient number of shares of Common Stock
so that such Person would no longer be an  "Acquiring  Person," then such Person
shall not be  deemed  to be or to have  become  an  "Acquiring  Person"  for any
purposes of this  Agreement;  (ii) if, as of the date hereof,  any Person is the
Beneficial Owner of 15% or more of the shares of Common Stock outstanding,  such
Person shall not be or become an "Acquiring  Person"  unless and until such time
as such Person shall become the Beneficial Owner of additional  shares of Common
Stock  (other than  pursuant to a dividend or  distribution  paid or made by the
Company on the outstanding Common Stock in shares of Common Stock or pursuant to
a split or subdivision of the outstanding Common Stock),  unless,  upon becoming
the Beneficial Owner of

<PAGE>

such additional  shares of Common Stock,  such Person is not then the Beneficial
Owner of 15% or more of the shares of Common Stock then  outstanding;  and (iii)
no Person shall become an "Acquiring  Person" as the result of an acquisition of
shares of Common  Stock by the Company  which,  by reducing the number of shares
outstanding,  increases  the  proportionate  number of  shares  of Common  Stock
beneficially  owned by such Person to 15% or more of the shares of Common  Stock
then  outstanding,  provided,  however,  that  if  a  Person  shall  become  the
Beneficial  Owner of 15% or more of the shares of Common Stock then  outstanding
by reason of such share  acquisitions by the Company and shall thereafter become
the  Beneficial  Owner of any  additional  shares of Common  Stock  (other  than
pursuant  to a  dividend  or  distribution  paid or made by the  Company  on the
outstanding  Common  Stock in shares of Common  Stock or  pursuant to a split or
subdivision of the outstanding  Common Stock),  then such Person shall be deemed
to be an "Acquiring  Person" unless upon becoming the  Beneficial  Owner of such
additional  shares of Common Stock such Person does not  beneficially own 15% or
more of the shares of Common  Stock then  outstanding.  For all purposes of this
Agreement,  any calculation of the number of shares of Common Stock  outstanding
at any particular  time,  including for purposes of  determining  the particular
percentage of such outstanding shares of Common Stock 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  Securities
Exchange Act of 1934, as amended (the "Exchange  Act"), as in effect on the date
hereof.

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

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

               (i) which  such  Person  or any of such  Person's  Affiliates  or
Associates is deemed to  beneficially  own,  directly or indirectly,  within the
meaning of Rule l3d--3 of the General Rules and  Regulations  under the Exchange
Act as in effect on the date hereof;

               (ii)  which such  Person or any of such  Person's  Affiliates  or
Associates  has (A) the right to  acquire  (whether  such  right is  exercisable
immediately  or only  after the  passage  of time)  pursuant  to any  agreement,
arrangement or understanding  (other than customary  agreements with and between
underwriters  and  selling  group  members  with  respect to a bona fide  public
offering of  securities),  or upon the exercise of conversion  rights,  exchange
rights,  rights,  warrants or options, or otherwise;  provided,  however, that a
Person shall not be deemed the Beneficial Owner of, or to beneficially  own, (x)
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,  (y) securities which such Person
has a right to acquire upon the exercise of Rights at any time prior to the time
that any Person becomes an Acquiring Person or (z) securities  issuable upon the
exercise of Rights from and after the time that any Person  becomes an Acquiring
Person if such Rights were acquired by

                                       2

<PAGE>

such  Person  or any of such  Person's  Affiliates  or  Associates  prior to the
Distribution  Date or pursuant to Section  3(a) or Section 22 hereof  ("Original
Rights")  or  pursuant  to  Section  11(i) or Section  11(n) with  respect to an
adjustment  to  Original  Rights;  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 by
reason  of  such  agreement,  arrangement  or  understanding  if the  agreement,
arrangement  or  understanding  to vote such  security (1) arises  solely from a
revocable proxy or consent given to such Person in response to a public proxy or
consent  solicitation  made pursuant to, and in accordance  with, the applicable
rules and  regulations  promulgated  under the  Exchange Act and (2) is not also
then  reportable  on Schedule 13D under the Exchange Act (or any  comparable  or
successor report); or

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

provided,  however, that no Person who is an officer, director or employee of an
Exempt  Person  shall be  deemed,  solely by reason of such  Person's  status or
authority  as  such,  to be the  "Beneficial  Owner"  of,  to  have  "Beneficial
Ownership" of or to  "beneficially  own" any securities  that are  "beneficially
owned" (as defined in this Section l(c)),  including,  without limitation,  in a
fiduciary capacity,  by an Exempt Person or by any other such officer,  director
or employee of an Exempt Person.

          (d) "Business Day" shall mean any day other than a Saturday,  a Sunday
or a day on which banking institutions in the State of California or the city in
which the  principal  office of the Rights  Agent is located are  authorized  or
obligated by law or executive order to close.

          (e) "Close of  Business"  on any given date shall mean 5:00 P.M.,  New
York, New York time (Eastern  Standard Time), on such date;  provided,  however,
that if such date is not a Business Day it shall mean 5:00 P.M.,  New York,  New
York time, on the next succeeding Business Day.

          (f) "Common  Stock" when used with reference to the Company shall mean
the Common Stock,  presently par value $.01 per share,  of the Company.  "Common
Stock" when used with  reference to any Person other than the Company shall mean
the common stock (or, in the case of an  unincorporated  entity,  the equivalent
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.

          (g)  "Common  Stock  Equivalents"  shall have the meaning set forth in
Section 11(a)(iii) hereof.

                                       3

<PAGE>

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

          (i) "Distribution  Date" shall have the meaning set forth in Section 3
hereof.

          (j) "Equivalent  Preferred Shares" shall have the meaning set forth in
Section 11(b) hereof.

          (k) "Exempt  Person" shall mean the Company or any Subsidiary (as such
term is hereinafter  defined) of the Company,  in each case  including,  without
limitation,  in its  fiduciary  capacity,  or any  employee  benefit plan of the
Company or of any  Subsidiary of the Company,  or any entity or trustee  holding
Common Stock for or pursuant to the terms of any such plan or for the purpose of
funding any such plan or funding  other  employee  benefits for employees of the
Company or of any Subsidiary of the Company.

          (l)  "Exchange  Ratio"  shall have the meaning set forth in Section 24
hereof.

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

          (n)  "Flip-In  Event"  shall  have the  meaning  set forth in  Section
11(a)(ii) hereof.

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

          (p) "NASDAQ" shall mean The Nasdaq Stock Market.

          (q) "New York Stock  Exchange" shall mean the New York Stock Exchange,
Inc.

          (r)   "Person"   shall  mean  any   individual,   firm,   corporation,
partnership, limited liability company, trust or other entity, and shall include
any successor (by merger or otherwise) to such entity.

          (s)  "Preferred  Stock"  shall mean the Series A Junior  Participating
Preferred  Stock, par value $.01 per share, of the Company having the rights and
preferences set forth in the Form of Certificate of Designation attached to this
Agreement as Exhibit A.

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

          (u)  "Redemption  Date"  shall have the meaning set forth in Section 7
hereof.

                                       4

<PAGE>

          (v) "Redemption  Price" shall have the meaning set forth in Section 23
hereof.

          (w) "Right  Certificate" shall have the meaning set forth in Section 3
hereof.

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

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

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

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

          (bb)  "Subsidiary"  of any Person shall mean any  corporation or other
entity of which  securities or other ownership  interests having ordinary voting
power  sufficient to elect a majority of the board of directors or other persons
performing similar functions are beneficially owned, directly or indirectly,  by
such Person, and any corporation or other entity that is otherwise controlled by
such Person.

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

          (dd) "Summary of Rights" shall have the meaning set forth in Section 3
hereof.

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

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

                                       5

<PAGE>

     Section 3. Issue of Right Certificates.

          (a) Until the Close of  Business  on the  earlier of (i) the tenth day
after the Stock  Acquisition  Date or (ii) the tenth Business Day (or such later
date as may be determined by action of the Board of Directors prior to such time
as any Person becomes an Acquiring Person) after the date of the commencement by
any Person (other than an Exempt Person) of, or of the first public announcement
of the  intention of such Person  (other than an Exempt  Person) to commence,  a
tender or exchange  offer the  consummation  of which would result in any Person
(other than an Exempt Person)  becoming the Beneficial Owner of shares of Common
Stock  aggregating 15% or more of the Common Stock then outstanding (the earlier
of such dates being herein  referred to as the  "Distribution  Date",  provided,
however,  that if either of such dates occurs  after the date of this  Agreement
and on or prior to the  Record  Date,  then the  Distribution  Date shall be the
Record  Date),  (x) the Rights will be evidenced  (subject to the  provisions of
Section 3(b) hereof) by the  certificates  for Common  Stock  registered  in the
names of the holders thereof and not by separate Right Certificates, and (y) the
Rights  will be  transferable  only in  connection  with the  transfer of Common
Stock.  As soon as  practicable  after the  Distribution  Date, the Company will
prepare and execute, the Rights Agent will countersign and the Company will send
or  cause  to be sent  (and  the  Rights  Agent  will,  if  requested,  send) by
first-class,  insured,  postage-prepaid  mail,  to each record  holder of Common
Stock as of the close of  business  on the  Distribution  Date  (other  than any
Acquiring Person or any Associate or Affiliate of an Acquiring  Person),  at the
address of such holder shown on the records of the Company, a Right Certificate,
in  substantially  the  form  of  Exhibit  B  hereto  (a  "Right  Certificate"),
evidencing one Right  (subject to adjustment as provided  herein) for each share
of  Common  Stock so held.  As of the  Distribution  Date,  the  Rights  will be
evidenced solely by such Right Certificates.

               (b) On the Record Date, or as soon as practicable thereafter, the
Company will send a copy of a Summary of Rights to Purchase  Shares of Preferred
Stock, in substantially  the form of Exhibit C hereto (the "Summary of Rights"),
by first-class,  postage-prepaid  mail, to each record holder of Common Stock as
of the Close of Business on the Record Date (other than any Acquiring  Person or
any  Associate  or Affiliate of any  Acquiring  Person),  at the address of such
holder shown on the records of the Company.  With  respect to  certificates  for
Common Stock outstanding as of the Record Date, until the Distribution Date, the
Rights will be evidenced  by such  certificates  registered  in the names of the
holders thereof together with the Summary of Rights. Until the Distribution Date
(or, if  earlier,  the  Expiration  Date),  the  surrender  for  transfer of any
certificate  for Common Stock  outstanding on the Record Date, with or without a
copy of the Summary of Rights,  shall also constitute the transfer of the Rights
associated with the Common Stock represented thereby.

               (c)  Certificates  issued for Common  Stock  (including,  without
limitation,  upon transfer of  outstanding  Common Stock,  disposition of Common
Stock out of treasury  stock or issuance or  reissuance  of Common  Stock out of
authorized  but unissued  shares) after the Record Date but prior to the earlier
of the  Distribution  Date and the  Expiration  Date  shall have  impressed  on,
printed on, written on or otherwise affixed to them the following legend:

                                       6

<PAGE>

     This  certificate  also  evidences  and entitles the holder  hereof to
     certain  rights  as set  forth in a  Rights  Agreement  between  Forte
     Software, Inc. (the "Company") and BankBoston,  N.A., as Rights Agent,
     dated as of May 16, 1997 and as amended from time to time (the "Rights
     Agreement"),  the terms of which  are  hereby  incorporated  herein by
     reference  and a copy of which is on file at the  principal  executive
     offices of the Company. Under certain  circumstances,  as set forth in
     the Rights  Agreement,  such  Rights  will be  evidenced  by  separate
     certificates and will no longer be evidenced by this certificate.  The
     Company  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,  as set forth in the  Rights
     Agreement,  Rights  owned by or  transferred  to any  Person who is or
     becomes an Acquiring  Person (as defined in the Rights  Agreement) and
     certain  transferees  thereof  will  become  null and void and will no
     longer be transferable.

With respect to such  certificates  containing the foregoing  legend,  until the
Distribution  Date the Rights  associated  with the Common Stock  represented by
such  certificates  shall  be  evidenced  by such  certificates  alone,  and the
surrender  for transfer of any such  certificate,  except as otherwise  provided
herein,  shall also  constitute the transfer of the Rights  associated  with the
Common Stock  represented  thereby.  In the event that the Company  purchases or
otherwise  acquires  any Common  Stock  after the  Record  Date but prior to the
Distribution  Date, any Rights associated with such Common Stock shall be deemed
canceled  and retired so that the Company  shall not be entitled to exercise any
Rights associated with the Common Stock which are no longer outstanding.

     Notwithstanding  this  paragraph  (c),  the  omission of a legend shall not
affect the  enforceability  of any part of this  Agreement  or the rights of any
holder of the Rights.

     Section  4. Form of Right  Certificates.  The Right  Certificates  (and the
forms of  election  to purchase  shares and of  assignment  to be printed on the
reverse  thereof)  shall be  substantially  in the form set  forth in  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  interdealer  quotation  system on which the Rights may from time to
time be listed or quoted,  or to conform to usage.  Subject to the provisions of
this  Agreement,  the Right  Certificates  shall entitle the holders  thereof to
purchase  such number of one  one-thousandths  of a share of Preferred  Stock as
shall be set forth  therein  at the price per one  one-thousandth  of a share of
Preferred Stock set forth therein (the "Purchase Price"), but the number of such
one  one-thousandths  of a share of Preferred Stock and the Purchase Price shall
be subject to adjustment as provided herein.

                                       7

<PAGE>

     Section 5. Countersignature and Registration.

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

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

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

          (a) Subject to the provisions of this Agreement, at any time after the
Distribution  Date and prior to the Expiration  Date,  any Right  Certificate or
Right  Certificates  may be  transferred,  split up,  combined or exchanged  for
another Right Certificate or Right Certificates, entitling the registered holder
to purchase a like number of one  one-thousandths  of a share of Preferred Stock
as the Right  Certificate or Right  Certificates  surrendered then entitled such
holder to  purchase.  Any  registered  holder  desiring to  transfer,  split up,
combine or exchange any Right Certificate or Right  Certificates shall make such
request in writing  delivered to the Rights Agent, and shall surrender the Right
Certificate  or Right  Certificates  to be  transferred,  split up,  combined or
exchanged  at the  office or  agency of the  Rights  Agent  designated  for such
purpose.  Thereupon the Rights Agent shall countersign and deliver to the Person
entitled thereto a Right Certificate or Right Certificates,  as the case may be,
as so requested.  The Company may require  payment of a sum  sufficient to cover
any tax or  governmental  charge  that may be  imposed  in  connection  with any
transfer, split up, combination or exchange of Right Certificates.

          (b) Subject to the provisions of this Agreement, at any time after the
Distribution  Date and prior to the Expiration Date, upon receipt by the Company
and the Rights Agent of evidence  reasonably  satisfactory  to them of the loss,
theft,  destruction or mutilation of a Right Certificate,  and, in case of loss,
theft or destruction,  of indemnity or security reasonably 

                                       8

<PAGE>

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

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

          (a) Except as  otherwise  provided  herein,  the Rights  shall  become
exercisable on the  Distribution  Date, and thereafter the registered  holder of
any Right  Certificate  may,  subject to Section  11(a)(ii) hereof and except as
otherwise provided herein,  exercise the Rights evidenced thereby in whole or in
part upon  surrender  of the Right  Certificate,  with the form of  election  to
purchase on the reverse side thereof duly  executed,  to the Rights Agent at the
office or agency of the Rights Agent designated for such purpose,  together with
payment of the aggregate  Purchase Price with respect to the total number of one
one-thousandths  of a share of  Preferred  Stock (or other  securities,  cash or
other assets,  as the case may be) as to which the Rights are exercised,  at any
time  which is both  after  the  Distribution  Date and  prior to the time  (the
"Expiration  Date") that is the earliest of (i) the Close of Business on May 16,
2007  (the  "Final  Expiration  Date"),  (ii) the time at which the  Rights  are
redeemed as provided in Section 23 hereof (the  "Redemption  Date") or (iii) the
time at which such Rights are exchanged as provided in Section 24 hereof.

          (b) The  Purchase  Price  shall  be  initially  $125.00  for  each one
one-thousandth  of a share of Preferred Stock purchasable upon the exercise of a
Right.  The Purchase Price and the number of one  one-thousandths  of a share of
Preferred Stock or other  securities or property to be acquired upon exercise of
a Right 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) of this Section 7.

          (c)  Except as  otherwise  provided  herein,  upon  receipt of a Right
Certificate  representing  exercisable  Rights,  with  the form of  election  to
purchase duly executed,  accompanied by payment of the aggregate  Purchase Price
for the shares of  Preferred  Stock to be  purchased  and an amount equal to any
applicable  transfer  tax  required  to be paid  by the  holder  of  such  Right
Certificate in accordance with Section 9 hereof,  in cash or by certified check,
cashier's  check or money order payable to the order of the Company,  the Rights
Agent shall thereupon  promptly (i) (A)  requisition  from any transfer agent of
the Preferred Stock  certificates for the number of shares of Preferred Stock to
be purchased and the Company hereby irrevocably authorizes its transfer agent to
comply  with all such  requests,  or (B)  requisition  from a  depositary  agent
appointed  by the Company  depositary  receipts  representing  interests in such
number  of one  one-thousandths  of a  share  of  Preferred  Stock  as are to be
purchased (in which case  certificates  for the Preferred  Stock  represented by
such  receipts  shall be  deposited by the  transfer  agent with the  depositary
agent) and the Company hereby directs any such  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)  promptly  after  receipt  of such  certificates  or
depositary receipts,  cause the same to be delivered to or upon the 

                                       9

<PAGE>

order of the  registered  holder of such Right  Certificate,  registered in such
name or names as may be  designated  by such  holder and (iv) when  appropriate,
after receipt, promptly deliver such cash to or upon the order of the registered
holder of such Right Certificate.

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

          (e)  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 of Rights upon the occurrence of any
purported  transfer or  exercise of Rights  pursuant to Section 6 hereof or this
Section 7 unless such registered  holder shall have (i) completed and signed the
certificate  contained in the form of assignment or form of election to purchase
set forth on the reverse  side of the Rights  Certificate  surrendered  for such
transfer or exercise and (ii) provided such additional  evidence of the identity
of the  Beneficial  Owner (or former  Beneficial  Owner)  thereof as the Company
shall reasonably request.

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

     Section 9. Availability of Shares of Preferred Stock.

          (a) The Company covenants and agrees that it will cause to be reserved
and kept available out of its authorized and unissued  shares of Preferred Stock
or any shares of Preferred  Stock held in its treasury,  the number of shares of
Preferred  Stock that will be  sufficient  to permit the exercise in full of all
outstanding Rights.

          (b) So long  as the  shares  of  Preferred  Stock  issuable  upon  the
exercise  of  Rights  may be listed  or  admitted  to  trading  on any  national
securities exchange, or quoted on NASDAQ, the Company shall use its best efforts
to cause, from and after such time as the Rights become exercisable,  all shares
reserved for such issuance to be listed or admitted to trading on such exchange,
or quoted on NASDAQ, upon official notice of issuance upon such exercise.

          (c) From and after such time as the  Rights  become  exercisable,  the
Company shall use its best efforts,  if then necessary to permit the issuance of
shares of Preferred 

                                       10

<PAGE>

Stock upon the  exercise  of Rights,  to  register  and  qualify  such shares of
Preferred Stock under the Securities Act and any applicable  state securities or
"Blue Sky" laws (to the extent  exemptions  therefrom are not available),  cause
such  registration  statement and  qualifications to become effective as soon as
possible  after  such  filing  and keep  such  registration  and  qualifications
effective  until the  earlier  of the date as of which the  Rights are no longer
exercisable  for such  securities  and the  Expiration  Date.  The  Company  may
temporarily  suspend,  for  a  period  of  time  not  to  exceed  90  days,  the
exercisability  of the  Rights  in order  to  prepare  and  file a  registration
statement under the Securities Act and permit it to become  effective.  Upon any
such suspension,  the Company shall issue a public announcement stating that the
exercisability of the Rights has been temporarily suspended, as well as a public
announcement   at  such  time  as  the   suspension  is  no  longer  in  effect.
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 and until a registration statement
under the Securities Act (if required) shall have been declared effective.

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

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

     Section 10.  Preferred  Stock  Record  Date.  Each Person in whose name any
certificate  for Preferred Stock is issued upon the exercise of Rights shall for
all  purposes  be deemed to have  become  the  holder of record of the shares of
Preferred Stock represented thereby on, and such certificate shall be dated, the
date  upon  which  the  Right  Certificate   evidencing  such  Rights  was  duly
surrendered  and  payment of the  Purchase  Price (and any  applicable  transfer
taxes)  was made;  provided,  however,  that if the date of such  surrender  and
payment is a date upon which the Preferred  Stock  transfer books of the Company
are closed, such Person shall be deemed to have become the record holder of such
shares on, and such certificate shall be dated, the next succeeding Business Day
on which the Preferred  Stock transfer  books of the Company are open.  Prior to
the exercise of the Rights evidenced thereby,  the holder of a Right Certificate
shall not be entitled to any rights of a holder of Preferred Stock for which the
Rights shall be exercisable, including, without limitation, the right to vote or
to  receive  dividends  or other 

                                       11

<PAGE>

distributions,  and  shall  not  be  entitled  to  receive  any  notice  of  any
proceedings of the Company, except as provided herein.

     Section 11.  Adjustment  of Purchase  Price,  Number and Kind of Shares and
Number of Rights. The Purchase Price, the number of shares of Preferred Stock or
other  securities  or property  purchasable  upon exercise of each Right and the
number of Rights  outstanding  are  subject to  adjustment  from time to time as
provided in this Section 11.

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

               (ii)  Subject to Section 24 of this  Agreement,  in the event any
Person  becomes an Acquiring  Person (the first  occurrence  of such event being
referred to  hereinafter  as the "Flip-In  Event"),  then (A) the Purchase Price
shall be adjusted to be the Purchase  Price in effect  immediately  prior to the
Flip-In  Event  multiplied  by the number of one  one-thousandths  of a share of
Preferred  Stock  for which a Right was  exercisable  immediately  prior to such
Flip-In  Event,  whether  or not such Right was then  exercisable,  and (B) each
holder of a Right,  except as otherwise  provided in this Section  11(a)(ii) and
Section  11(a)(iii)  hereof,  shall  thereafter have the right to receive,  upon
exercise  thereof at a price equal to the Purchase  Price (as so  adjusted),  in
accordance  with the terms of this  Agreement and in lieu of shares of Preferred
Stock,  such number of shares of Common Stock as shall equal the result obtained
by dividing the Purchase  Price (as so adjusted) by 50% of the current per share
market price of the Common Stock  (determined  pursuant to Section 11(d) hereof)
on the date of such Flip-In Event;  provided,  however,  that the Purchase Price
(as so  adjusted)  and the number of shares of Common Stock so  receivable  upon
exercise of a Right shall,  following the Flip-In  Event,  be subject to further
adjustment   as   appropriate   in   accordance   with  Section   11(f)  hereof.
Notwithstanding  anything in this Agreement to the contrary,  however,  from and
after the  Flip-In  Event,  any Rights  that are  beneficially  owned by (x) any
Acquiring Person (or any Affiliate or Associate of any Acquiring Person),  (y) a
transferee of any  Acquiring  Person (or any such  Affiliate or  Associate)  who
becomes  a  transferee  after  the  Flip-In  Event  or (z) a  transferee  of any
Acquiring  Person (or

                                       12

<PAGE>

any  such  Affiliate  or  Associate)  who  became  a  transferee   prior  to  or
concurrently  with the Flip-In Event  pursuant to either (I) a transfer from the
Acquiring Person to holders of its equity  securities or to any Person with whom
it has any  continuing  agreement,  arrangement or  understanding  regarding the
transferred  Rights  or  (II) a  transfer  which  the  Board  of  Directors  has
determined is part of a plan, arrangement or understanding which has the purpose
or  effect  of  avoiding  the  provisions  of  this  paragraph,  and  subsequent
transferees  of such Persons,  shall be void without any further  action and any
holder of such Rights shall thereafter have no rights whatsoever with respect to
such Rights under any  provision of this  Agreement.  The Company  shall use all
reasonable  efforts to ensure that the provisions of this Section  11(a)(ii) are
complied with,  but shall have no liability to any holder of Right  Certificates
or other  Person  as a result of its  failure  to make any  determinations  with
respect to an Acquiring  Person or its  Affiliates,  Associates  or  transferees
hereunder.  From and after the  Flip-In  Event,  no Right  Certificate  shall be
issued pursuant to Section 3 or Section 6 hereof that represents Rights that are
or have become void pursuant to the provisions of this paragraph,  and any Right
Certificate  delivered  to the Rights Agent that  represents  Rights that are or
have become void pursuant to the provisions of this paragraph shall be canceled.
From and after the occurrence of an event specified in Section 13(a) hereof, any
Rights  that  theretofore  have  not been  exercised  pursuant  to this  Section
11(a)(ii) shall thereafter be exercisable only in accordance with Section 13 and
not pursuant to this Section 11(a)(ii).

               (iii) The  Company  may at its option  substitute  for a share of
Common  Stock  issuable  upon the  exercise  of  Rights in  accordance  with the
foregoing  subparagraph  (ii) a number of shares of Preferred  Stock or fraction
thereof  such that the current per share  market price of one share of Preferred
Stock  multiplied  by such  number or fraction is equal to the current per share
market price of one share of Common Stock.  In the event that there shall not be
sufficient  shares of Common Stock issued but not  outstanding or authorized but
unissued  to permit the  exercise in full of the Rights in  accordance  with the
foregoing  subparagraph  (ii),  the  Board of  Directors  shall,  to the  extent
permitted by applicable law and any material  agreements then in effect to which
the Company is a party (A) determine  the excess (such excess,  the "Spread") of
(1) the value of the shares of Common  Stock  issuable  upon the  exercise  of a
Right in accordance with the foregoing  subparagraph  (ii) (the "Current Value")
over (2) the  Purchase  Price (as  adjusted  in  accordance  with the  foregoing
subparagraph  (ii)), and (B) with respect to each Right (other than Rights which
have become void pursuant to the  foregoing  subparagraph  (ii)),  make adequate
provision to  substitute  for the shares of Common Stock  issuable in accordance
with the foregoing  subparagraph  (ii) upon exercise of the Right and payment of
the  Purchase  Price (as  adjusted in  accordance  therewith),  (1) cash,  (2) a
reduction in such Purchase Price,  (3) shares of Preferred Stock or other equity
securities of the Company (including, without limitation, shares or fractions of
shares of  preferred  stock  which,  by virtue of having  dividend,  voting  and
liquidation  rights  substantially  comparable  to those of the shares of Common
Stock, are deemed in good faith by the Board of Directors to have  substantially
the same value as the shares of Common Stock (such shares of Preferred Stock and
shares or fractions of shares of preferred stock are hereinafter  referred to as
"Common Stock  Equivalents")),  (4) debt  securities  of the Company,  (5) other
assets,  or (6) any  combination  of the foregoing,  having a value which,  when
added to the value of the shares of Common  Stock  issued upon  exercise of such
Right, shall have an aggregate value equal to the Current Value (less the 

                                       13

<PAGE>

amount of any reduction in such Purchase Price),  where such aggregate value has
been  determined  by the Board of  Directors  upon the  advice  of a  nationally
recognized  investment  banking  firm  selected  in good  faith by the  Board of
Directors;  provided,  however,  that if the  Company  shall  not make  adequate
provision to deliver value  pursuant to clause (B) above within thirty (30) days
following the Flip-In Event (the "Section  11(a) (ii) Trigger  Date"),  then the
Company shall be obligated to deliver, to the extent permitted by applicable law
and any material agreements then in effect to which the Company is a party, upon
the  surrender  for  exercise of a Right and without  requiring  payment of such
Purchase Price,  shares of Common Stock (to the extent available),  and then, if
necessary,  such number or fractions of shares of Preferred Stock (to the extent
available)  and then,  if  necessary,  cash,  which  shares  and/or cash have an
aggregate  value equal to the Spread.  If,  upon the  occurrence  of the Flip-In
Event,  the Board of Directors  shall  determine in good faith that it is likely
that  sufficient  additional  shares of Common  Stock  could be  authorized  for
issuance upon exercise in full of the Rights, then, if the Board of Directors so
elects, the thirty (30) day period set forth above may be extended to the extent
necessary,  but not more than  ninety  (90) days  after the  Section  11(a) (ii)
Trigger  Date, in order that the Company may seek  stockholder  approval for the
authorization of such additional  shares (such thirty (30) day period, as it may
be extended, is herein called the "Substitution Period"). To the extent that the
Company  determines that some action need be taken pursuant to the second and/or
third  sentence of this  Section  11(a)(iii),  the  Company  (x) shall  provide,
subject  to  Section  11(a)(ii)  hereof and the last  sentence  of this  Section
11(a)(iii)  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 and/or to decide the appropriate form of distribution to be made pursuant
to such second 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 shares of Common Stock shall be the
current per share market price (as determined  pursuant to Section  11(d)(i)) on
the Section  11(a)(ii) Trigger Date and the per share or fractional value of any
"Common Stock  Equivalent" shall be deemed to equal the current per share market
price of the Common Stock.  The Board of Directors of the Company may, but shall
not be required to, establish procedures to allocate the right to receive shares
of Common Stock upon the exercise of the Rights among holders of Rights pursuant
to this Section 11(a)(iii).

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

                                       14

<PAGE>

Stock and equivalent  preferred shares  outstanding on such record date plus the
number of shares of Preferred  Stock and equivalent  preferred  shares which the
aggregate offering price of the total number of shares of Preferred Stock and/or
equivalent  preferred  shares so to be offered  (and/or  the  aggregate  initial
conversion price of the convertible  securities so to be offered) would purchase
at such current market price,  and the  denominator of which shall be the number
of shares of Preferred Stock and equivalent preferred shares outstanding on such
record  date plus the number of  additional  shares of  Preferred  Stock  and/or
equivalent  preferred shares to be offered for subscription or purchase (or into
which the  convertible  securities so to be offered are initially  convertible);
provided,  however, that in no event shall the consideration to be paid upon the
exercise  of one Right be less  than the  aggregate  par value of the  shares of
capital stock of the Company  issuable upon exercise of one Right.  In case such
subscription  price may be paid in a consideration part or all of which shall be
in a form  other  than  cash,  the  value  of  such  consideration  shall  be as
determined  in good  faith  by the  Board of  Directors  of the  Company,  whose
determination  shall be  described in a statement  filed with the Rights  Agent.
Shares of Preferred Stock and equivalent  preferred  shares owned by or held for
the account of the Company  shall not be deemed  outstanding  for the purpose of
any such computation. Such adjustment shall be made successively whenever such a
record date is fixed; and in the event that such rights, options or warrants are
not so issued,  the Purchase  Price shall be adjusted to be the  Purchase  Price
which would then be in effect if such record date had not been fixed.

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

          (d)  (i) Except as otherwise  provided  herein, for the purpose of any
computation  hereunder,  the "current per share market price" of any security (a
"Security" for the purpose of this Section 11(d)(i)) on any date shall be deemed
to be the average of the daily closing prices per share of such Security for the
30 consecutive  Trading Days (as such term is 

                                       15

<PAGE>

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

               (ii)  For  the  purpose  of  any  computation  hereunder,  if the
Preferred Stock is publicly traded,  the "current per share market price" of the
Preferred  Stock shall be determined in accordance  with the method set forth in
Section  11(d)(i).  If the Preferred Stock is not publicly traded but the Common
Stock is publicly traded,  the "current per share market price" of the Preferred
Stock shall be  conclusively  deemed to be the current per share market price of
the Common Stock as determined  pursuant to Section  11(d)(i)  multiplied by the
then  applicable  Adjustment  Number (as defined in and determined in accordance
with the  Certificate of Designation  for the Preferred  Stock).  If neither the
Common  Stock nor the  Preferred  Stock is publicly  traded,  "current per share
market price" shall mean the fair value per share as determined in good faith by
the Board of Directors of the Company, whose determination shall be described in
a statement filed with the Rights Agent.

          (e) No adjustment in the Purchase Price shall be required  unless such
adjustment  would require an increase or decrease of at least 1% in the Purchase
Price;  provided,  however, that any adjustments which by reason of this Section
11(e) are not  required  to be made  shall be  carried  forward  and taken  into
account in any subsequent  adjustment.  All  calculations  under this Section 11
shall be made to the nearest cent or to the nearest one  hundred-thousandth of a
share of Preferred  Stock or  one-hundredth  of a share of Common Stock or other
share or security as the case may be. Notwithstanding the first sentence of this
Section 11(e), any 

                                       16

<PAGE>

adjustment  required by this  Section 11 shall be made no later than the earlier
of (i)  three  years  from  the  date of the  transaction  which  requires  such
adjustment or (ii) the Expiration Date.

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

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

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

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

                                       17

<PAGE>

distributed to holders of record of Right Certificates on such record date Right
Certificates evidencing,  subject to Section 14 hereof, the additional Rights to
which such holders shall be entitled as a result of such adjustment,  or, at the
option of the Company,  shall cause to be  distributed to such holders of record
in substitution and replacement for the Right  Certificates held by such holders
prior to the date of adjustment,  and upon surrender thereof, if required by the
Company, new Right Certificates  evidencing all the Rights to which such holders
shall be entitled after such adjustment. Right Certificates so to be distributed
shall be issued,  executed and  countersigned  in the manner provided for herein
and  shall  be  registered  in the  names  of the  holders  of  record  of Right
Certificates on the record date specified in the public announcement.

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

          (k) Before taking any action that would cause an  adjustment  reducing
the  Purchase  Price  below  the then par  value,  if any,  of the  fraction  of
Preferred  Stock or other shares of capital  stock  issuable  upon exercise of a
Right,  the Company shall take any corporate action which may, in the opinion of
its  counsel,  be  necessary  in order that the  Company may validly and legally
issue  fully  paid and  nonassessable  shares of  Preferred  Stock or other such
shares at such adjusted Purchase Price.

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

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

                                       18

<PAGE>

          (n) Anything in this Agreement to the contrary notwithstanding, in the
event that at any time after the date of this Rights  Agreement and prior to the
Distribution  Date,  the Company  shall (i) declare and pay any  dividend on the
Common Stock payable in Common Stock or (ii) effect a  subdivision,  combination
or consolidation of the Common Stock (by  reclassification  or otherwise than by
payment of a dividend  payable in Common  Stock) into a greater or lesser number
of  shares of Common  Stock,  then,  in each  such  case,  the  number of Rights
associated  with  each  share of Common  Stock  then  outstanding,  or issued or
delivered  thereafter,  shall be proportionately  adjusted so that the number of
Rights thereafter  associated with each share of Common Stock following any such
event  shall  equal the  result  obtained  by  multiplying  the number of Rights
associated with each share of Common Stock  immediately prior to such event by a
fraction  the  numerator  of which shall be the total number of shares of Common
Stock  outstanding  immediately  prior to the  occurrence  of the  event and the
denominator  of which  shall be the total  number  of  shares  of  Common  Stock
outstanding immediately following the occurrence of such event.

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

     Section 12.  Certificate  of Adjusted  Purchase  Price or Number of Shares.
Whenever  an  adjustment  is made as  provided  in Section 11 or 13 hereof,  the
Company shall promptly (a) prepare a certificate  setting forth such adjustment,
and a brief statement of the facts accounting for such adjustment, (b) file with
the  Rights  Agent and with each  transfer  agent for the  Common  Stock and the
Preferred Stock a copy of such  certificate and (c) mail a brief summary thereof
to each holder of a Right  Certificate in accordance  with Section 25 hereof (if
so required under Section 25 hereof).  The Rights Agent shall be fully protected
in relying on any such certificate and on any adjustment  therein  contained and
shall not be deemed to have knowledge of any 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,  directly  or  indirectly,  at any time  after  the
Flip-In  Event (i) the Company  shall  consolidate  with or shall merge into any
other  Person,  (ii) any Person  shall  merge with and into the  Company and the
Company shall be the continuing or surviving  corporation of such merger and, in
connection  with such  merger,  all or part of the Common Stock shall be changed
into or exchanged  for stock or other  securities of any other Person (or of the
Company)  or cash or any other  property,  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  (other  than the Company or one or more
wholly-owned  Subsidiaries  of the Company),  then upon the first  occurrence of
such event,  proper  provision shall be made so that: (A) each holder of a Right

                                       19

<PAGE>

(other than Rights which have become void pursuant to Section  11(a)(ii) hereof)
shall  thereafter  have the right to receive,  upon the exercise  thereof at the
Purchase Price (as  theretofore  adjusted in accordance  with Section  11(a)(ii)
hereof), in accordance with the terms of this Agreement and in lieu of shares of
Preferred  Stock  or  Common  Stock  of the  Company,  such  number  of  validly
authorized and issued, fully paid, non-assessable and freely tradeable shares of
Common Stock of the Principal Party (as such term is hereinafter  defined),  not
subject to any liens,  encumbrances,  rights of first  refusal or other  adverse
claims,  as shall equal the result  obtained by dividing the Purchase  Price (as
theretofore  adjusted in accordance with Section 11(a)(ii) hereof) by 50% of the
current  per share  market  price of the Common  Stock of such  Principal  Party
(determined  pursuant to Section  11(d) hereof) on the date of  consummation  of
such  consolidation,  merger,  sale or  transfer;  provided,  however,  that the
Purchase Price (as  theretofore  adjusted in accordance  with Section  11(a)(ii)
hereof)  and the  number of shares of Common  Stock of such  Principal  Party so
receivable  upon  exercise of a Right shall be subject to further  adjustment as
appropriate  in  accordance  with  Section  11(f)  hereof to reflect  any events
occurring  in respect  of the Common  Stock of such  Principal  Party  after the
occurrence of such consolidation,  merger, sale or transfer;  (B) such Principal
Party  shall  thereafter  be liable  for,  and shall  assume,  by virtue of such
consolidation,  merger, sale or transfer,  all the obligations and duties of the
Company  pursuant  to this  Rights  Agreement;  (C)  the  term  "Company"  shall
thereafter be deemed to refer to such  Principal  Party;  and (D) such Principal
Party shall take such steps (including, but not limited to, the reservation of a
sufficient  number of its shares of Common  Stock in  accordance  with Section 9
hereof) in connection with such  consummation of any such  transaction as may be
necessary to assure that the provisions  hereof shall  thereafter be applicable,
as nearly as  reasonably  may be, in relation to the shares of its Common  Stock
thereafter deliverable upon the exercise of the Rights;  provided that, 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 Purchase Price as provided in this Section 13(a),  such
cash, shares,  rights,  warrants and other property which such holder would have
been entitled to receive had such holder, at the time of such transaction, owned
the Common Stock of the Principal Party  receivable upon the exercise of a 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.

          (b) "Principal Party" shall mean:

               (i) in the case of any  transaction  described  in (i) or (ii) of
the first sentence of Section 13(a) hereof: (A) the Person that is the issuer of
the  securities  into which the  shares of Common  Stock are  converted  in such
merger or consolidation,  or, if there is more than one such issuer,  the issuer
the shares of Common Stock 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 shares of Common  Stock 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 

                                       20

<PAGE>

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 (iii) of the
first sentence of Section 13(a) hereof,  the Person that is the party  receiving
the greatest portion of the assets or earning power transferred pursuant to such
transaction  or  transactions,  or,  if each  Person  that  is a  party  to such
transaction or  transactions  receives the same 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  Stock  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 Stock of such Person is not at such time or has
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  Stock  of which is and has 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  Stock  of all of  which  is and has  been so  registered,  the term
"Principal  Party"  shall refer to  whichever  of such  Persons is the issuer of
Common Stock having the greatest  aggregate market value of shares  outstanding,
or (3) if such  Person is owned,  directly  or  indirectly,  by a joint  venture
formed by two or more Persons that are not owned, directly or indirectly, by the
same  Person,  the rules set forth in clauses  (1) and (2) above  shall apply to
each of the owners  having an interest in the venture as if the Person  owned by
the joint venture was a Subsidiary of both or all of such joint  venturers,  and
the Principal  Party in each such case shall bear the  obligations  set forth in
this  Section 13 in the same ratio as its  interest in such Person  bears to the
total of such interests.

          (c) The Company shall not consummate any consolidation,  merger,  sale
or transfer referred to in Section 13(a) hereof unless prior thereto the Company
and the Principal  Party  involved  therein shall have executed and delivered to
the Rights Agent an agreement confirming that the requirements of Sections 13(a)
and (b) hereof shall  promptly be performed in  accordance  with their terms and
that such consolidation,  merger, sale or transfer of assets shall not result in
a default by the  Principal  Party under this  Agreement  as the same shall have
been assumed by the Principal  Party  pursuant to Sections  13(a) and (b) hereof
and providing  that,  as soon as  practicable  after  executing  such  agreement
pursuant to this Section 13, the Principal Party will:

               (i)  prepare  and  file  a  registration   statement   under  the
Securities  Act, if  necessary,  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;

                                       21

<PAGE>

               (ii) use its best  efforts,  if the Common Stock of the Principal
Party shall be listed or  admitted to trading on the New York Stock  Exchange or
on  another  national  securities  exchange,  to list or  admit to  trading  (or
continue the listing of) the Rights and the securities purchasable upon exercise
of the Rights on the New York Stock Exchange or such securities exchange, or, if
the Common  Stock of the  Principal  Party  shall not be listed or  admitted  to
trading on the New York Stock  Exchange or a national  securities  exchange,  to
cause the Rights and the securities receivable upon exercise of the Rights to be
authorized for quotation on NASDAQ or on such other system then in use;

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

               (iv) obtain  waivers of any rights of first refusal or preemptive
rights in respect of the Common Stock of the Principal Party subject to purchase
upon exercise of outstanding Rights.

          (d) In case the Principal Party has provision in any of its authorized
securities or in its certificate of incorporation or by-laws or other instrument
governing its affairs, which provision would have the effect of (i) causing such
Principal  Party to issue  (other  than to  holders of Rights  pursuant  to this
Section 13), in connection  with, or as a consequence of, the  consummation of a
transaction  referred to in this  Section 13,  shares of Common  Stock or Common
Stock  Equivalents of such Principal  Party at less than the then current market
price per share  thereof  (determined  pursuant  to  Section  11(d)  hereof)  or
securities  exercisable for, or convertible  into,  Common Stock or Common Stock
Equivalents of such Principal Party at less than such then current market price,
or  (ii)  providing  for  any  special  payment,  tax or  similar  provision  in
connection  with  the  issuance  of the  Common  Stock of such  Principal  Party
pursuant to the  provisions  of Section  13,  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 Flip-In  Event,  enter into any  transaction  of the type described in
clauses  (i)  through  (iii) of  Section  13(a)  hereof if (i) at the time of or
immediately  after  such   consolidation,   merger,   sale,  transfer  or  other
transaction  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 consolidation,  merger,
sale,  transfer  or  other  transaction,  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

                                       22

<PAGE>

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.

     Section 14. Fractional Rights and Fractional Shares.

          (a) The Company shall not be required to issue  fractions of Rights or
to distribute Right Certificates which evidence  fractional Rights (except prior
to the  Distribution  Date in accordance with Section 11(n) hereof).  In lieu of
such  fractional  Rights,  there shall be paid to the registered  holders of the
Right  Certificates  with regard to which such fractional Rights would otherwise
be issuable,  an amount in cash equal to the same fraction of the current market
value of a whole  Right.  For the purposes of this  Section  14(a),  the current
market  value of a whole Right shall be the closing  price of the Rights for the
Trading Day immediately  prior to the date on which such fractional Rights would
have been  otherwise  issuable.  The closing price for any day shall be the last
sale price,  regular  way, or, in case no such sale takes place on such day, the
average of the  closing  bid and asked  prices,  regular  way, in either case as
reported in the principal consolidated transaction reporting system with respect
to securities  listed or admitted to trading on the New York Stock  Exchange or,
if the  Rights  are not  listed or  admitted  to  trading  on the New York Stock
Exchange, as reported in the principal consolidated transaction reporting system
with respect to securities listed on the principal national  securities exchange
on which the Rights are listed or  admitted to trading or, if the Rights are not
listed or  admitted to trading on any  national  securities  exchange,  the last
quoted  price or, if not so  quoted,  the  average of the high bid and low asked
prices in the  over-the-counter  market,  as  reported  by NASDAQ or such  other
system then in use or, if on any such date the Rights are not quoted by any such
organization,  the average of the closing bid and asked prices as furnished by a
professional market maker making a market in the Rights selected by the Board of
Directors of the  Company.  If on any such date no such market maker is making a
market in the Rights, the fair value of the Rights on such date as determined in
good faith by the Board of Directors of the Company shall be used.

          (b) The Company shall not be required to issue  fractions of Preferred
Stock (other than fractions which are integral  multiples of one  one-thousandth
of a share of Preferred  Stock) or to  distribute  certificates  which  evidence
fractional  shares of Preferred  Stock (other than fractions  which are integral
multiples of one one-thousandth of a share of Preferred Stock) upon the exercise
or exchange of Rights.  Interests in  fractions  of Preferred  Stock in integral
multiples  of one  one-thousandth  of a share of  Preferred  Stock  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  Stock  represented  by such
depositary  receipts.  In lieu of fractional  shares of Preferred Stock that are
not integral  multiples of one one-thousandth of a share of Preferred Stock, the
Company shall pay to the registered  holders of Right  Certificates  at the time
such Rights are  exercised  or  exchanged  as herein  provided an amount in cash
equal to the same  fraction  of the  current  market  value of a whole  share of
Preferred  Stock (as determined in accordance with Section 14(a) hereof) for the
Trading Day immediately prior to the date of such exercise or exchange.

                                       23

<PAGE>

          (c) The Company shall not be required to issue  fractions of shares of
Common Stock or to distribute  certificates which evidence  fractional shares of
Common Stock upon the exercise or exchange of Rights. In lieu of such fractional
shares of Common Stock,  the Company shall pay to the registered  holders of the
Right  Certificates  with regard to which such fractional shares of Common Stock
would  otherwise be issuable an amount in cash equal to the same fraction of the
current  market  value of a whole  share  of  Common  Stock  (as  determined  in
accordance with Section 14(a) hereof) for the Trading Day  immediately  prior to
the date of such exercise or exchange.

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

     Section  15.  Rights of  Action.  All  rights of action in  respect of this
Agreement,  excepting  the  rights of action  given to the  Rights  Agent  under
Section 18 hereof, are vested in the respective  registered holders of the Right
Certificates (and, prior to the Distribution Date, the registered holders of the
Common Stock);  and any registered holder of any Right Certificate (or, prior to
the Distribution  Date, of the Common Stock),  without the consent of the Rights
Agent  or of the  holder  of any  other  Right  Certificate  (or,  prior  to the
Distribution  Date,  of the  Common  Stock),  on his own  behalf and for his own
benefit,  may  enforce,  and may  institute  and  maintain  any suit,  action or
proceeding  against the Company to enforce,  or otherwise act in respect of, his
right to exercise the Rights  evidenced by such Right  Certificate (or, prior to
the Distribution  Date, such Common Stock) in the manner provided therein 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 Right  Holders.  Every  holder  of a Right,  by
accepting  the same,  consents  and agrees with the Company and the Rights Agent
and with every other holder of a Right that:

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

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

          (c) the Company and the Rights  Agent may deem and treat the Person in
whose name the Right Certificate (or, prior to the Distribution Date, the Common
Stock certificate) is registered as the absolute owner thereof and of the Rights
evidenced thereby  (notwithstanding any notations of ownership or writing on the
Right Certificates or the Common Stock certificate made by anyone other than the
Company or the Rights  Agent)  for all  purposes 

                                       24

<PAGE>

whatsoever,  and neither  the Company nor the Rights  Agent shall be affected by
any notice to the contrary.

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

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

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

          (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  stock  transfer  or  corporate  trust  powers  of the  Rights  Agent or any
successor  Rights  Agent,  shall be the successor to the Rights Agent under this
Agreement without the execution or filing of any paper or any further act on the
part of any of the parties  hereto;  provided,  that such  corporation  would be
eligible for  appointment  as a successor  Rights Agent under the  provisions of
Section 21 hereof. In case at the time such

                                       25

<PAGE>

successor  Rights Agent shall succeed to the agency  created by this  Agreement,
any of the Right  Certificates  shall have been countersigned but not delivered,
any  such  successor  Rights  Agent  may  adopt  the   countersignature  of  the
predecessor  Rights Agent and deliver such Right  Certificates so countersigned;
and in case at that  time any of the  Right  Certificates  shall  not have  been
countersigned,   any  successor   Rights  Agent  may   countersign   such  Right
Certificates  either in the name of the predecessor  Rights Agent or in the name
of the  successor  Rights Agent;  and in all such cases such Right  Certificates
shall  have  the full  force  provided  in the  Right  Certificates  and in this
Agreement.

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

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

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

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

          (c) The Rights Agent shall be liable  hereunder to the Company and any
other Person only for its own 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 Right
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 

                                       26

<PAGE>

hereof by the Rights  Agent) or in respect of the  validity or  execution of any
Right  Certificate  (except  its  countersignature  thereof);  nor  shall  it be
responsible for any breach by the Company of any covenant or condition contained
in this Agreement or in any Right  Certificate;  nor shall it be responsible for
any change in the  exercisability  of the Rights  (including the Rights becoming
void pursuant to Section 11(a)(ii) hereof) or any adjustment in the terms of the
Rights provided for in Sections 3, 11, 13, 23 and 24, or the ascertaining of the
existence of facts that would require any such change or adjustment (except with
respect to the exercise of Rights evidenced by Right  Certificates after receipt
of a certificate  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 shares
of Preferred  Stock or other  securities to be issued pursuant to this Agreement
or any Right Certificate or as to whether any shares of Preferred Stock or other
securities 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
person reasonably believed by the Rights Agent to be one of the President or the
Secretary  of the  Company,  and  to  apply  to  such  officers  for  advice  or
instructions in connection  with its duties,  and it shall not be liable for any
action taken or suffered 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 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 Business Days after the date any officer of the
Company actually  receives such  application  unless any such officer shall have
consented in writing to an earlier date) unless, prior to taking any such action
(or the effective date in the case of an omission),  the Rights Agent shall have
received  written  instructions in response to such  application  specifying the
action to be taken or omitted.

          (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

                                       27

<PAGE>

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) If,  with  respect to any Rights  Certificate  surrendered  to the
Rights Agent for exercise or transfer,  the certificate contained in the form of
assignment or the form of election to purchase set forth on the reverse thereof,
as the case may be,  has not been  completed  to  certify  the  holder is not an
Acquiring Person (or an Affiliate or Associate thereof),  the Rights Agent shall
not take any further action with respect to such requested  exercise or transfer
without first consulting with the Company.

     Section  21.  Change of Rights  Agent.  The Rights  Agent or any  successor
Rights Agent may resign and be discharged  from its duties under this  Agreement
upon 30 days' notice in writing mailed to the Company and to each transfer agent
of the Common Stock or Preferred  Stock by  registered or certified  mail,  and,
following the  Distribution  Date, to the holders of the Right  Certificates  by
first-class  mail.  The  Company  may remove the Rights  Agent or any  successor
Rights  Agent upon 30 days'  notice in  writing,  mailed to the Rights  Agent or
successor  Rights Agent,  as the case may be, and to each transfer  agent of the
Common Stock or Preferred Stock by registered or certified mail, and,  following
the Distribution  Date, to the holders of the Right  Certificates by first-class
mail. If the Rights Agent shall resign or be removed or shall  otherwise  become
incapable of acting,  the Company shall appoint a successor to the Rights Agent.
If the Company  shall fail to make such  appointment  within a period of 30 days
after giving  notice of such removal or after it has been notified in writing of
such resignation or incapacity by the resigning or incapacitated Rights Agent or
by the holder of a Right  Certificate (who shall,  with such notice,  submit his
Right Certificate for inspection by the Company),  then the registered holder of
any Right  Certificate may apply to any court of competent  jurisdiction for the
appointment of a new Rights Agent. Any successor Rights Agent, whether appointed
by the Company or by such a court,  shall be a  corporation  organized and doing
business  under  the laws of the  United  States or the laws of any state of the
United States or the District of Columbia, in good standing, having an office in
the State of California or the State of New York, which is authorized under such
laws to  exercise  corporate  trust or stock  transfer  powers and is subject to
supervision or  examination  by federal or state  authority and which has at the
time of its  appointment  as Rights  Agent a combined  capital and surplus of at
least $50 million. After appointment, the successor Rights Agent shall be vested
with the same  powers,  rights,  duties and  responsibilities  as if it had been
originally  named  as  Rights  Agent  without  further  act  or  deed;  but  the
predecessor  Rights  Agent shall  deliver and transfer to the  successor  Rights
Agent any property at the time held by it hereunder, and execute and deliver any
further assurance,  conveyance, act or deed necessary for the purpose. Not later
than the effective  date of any such  appointment  the Company shall file notice
thereof in writing with the predecessor  Rights Agent and each transfer agent of
the Common Stock or Preferred Stock, and,  following the Distribution Date, mail
a notice thereof in writing to the registered holders of the Right Certificates.
Failure to give any notice  provided  for in this  Section 21,  however,  or any
defect therein,  shall not affect the legality or validity of the resignation or
removal of the Rights Agent or the appointment of the successor Rights Agent, as
the case may be.

                                       28

<PAGE>

     Section 22. Issuance of New Right Certificates.  Notwithstanding any of the
provisions of this Agreement or of the Rights to the contrary,  the Company may,
at its option,  issue new Right Certificates  evidencing Rights in such forms as
may be approved by its Board of Directors to reflect any adjustment or change in
the Purchase Price and the number or kind or class of shares or other securities
or property purchasable under the Right Certificates made in accordance with the
provisions of this  Agreement.  In addition,  in connection with the issuance or
sale of Common Stock following the Distribution Date and prior to the Expiration
Date,  the Company may with  respect to shares of Common Stock so issued or sold
pursuant to (i) the exercise of stock  options,  (ii) under any employee plan or
arrangement,  (iii) upon the  exercise,  conversion  or exchange of  securities,
notes or debentures  issued by the Company or (iv) a  contractual  obligation of
the Company,  in each case existing prior to the Distribution Date, issue Rights
Certificates  representing  the appropriate  number of Rights in connection with
such issuance or sale.

     Section 23. Redemption.

          (a) The Board of  Directors  of the Company  may, at any time prior to
the Flip-In Event,  redeem all but not less than all the then outstanding Rights
at a redemption price of $.01 per Right,  appropriately  adjusted to reflect any
stock split,  stock  dividend or similar  transaction  occurring  after the date
hereof (the redemption  price being  hereinafter  referred to as the "Redemption
Price").  The  redemption  of the Rights 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 Redemption Price shall be payable,  at the option
of the  Company,  in  cash,  shares  of  Common  Stock,  or such  other  form of
consideration as the Board of Directors shall determine.

          (b) Immediately upon the action of the Board of Directors ordering the
redemption  of the Rights  pursuant to  paragraph  (a) of this Section 23 (or at
such later time as the Board of Directors may establish for the effectiveness of
such  redemption),  and without any further  action and without any notice,  the
right to exercise the Rights will terminate and the only right thereafter of the
holders of Rights shall be to receive the  Redemption  Price.  The Company shall
promptly give public notice of any such redemption;  provided, however, that the
failure to give, or any defect in, any such notice shall not affect the validity
of such  redemption.  Within 10 days after such action of the Board of Directors
ordering  the  redemption  of the  Rights  (or such  later  time as the Board of
Directors may establish for the effectiveness of such  redemption),  the Company
shall mail a notice of  redemption  to all the  holders of the then  outstanding
Rights at their last  addresses  as they appear upon the  registry  books of the
Rights Agent or, prior to the  Distribution  Date, on the registry  books of the
transfer  agent for the Common  Stock.  Any notice which is mailed in the manner
herein  provided shall be deemed given,  whether or not the holder  receives the
notice.  Each such  notice of  redemption  shall  state the  method by which the
payment of the Redemption Price will be made.

     Section 24. Exchange.

          (a) The Board of Directors  of the Company may, at its option,  at any
time after the Flip-In Event,  exchange all or part of the then  outstanding and
exercisable  Rights 

                                       29

<PAGE>

(which shall not include Rights that have become void pursuant to the provisions
of Section  11(a)(ii) hereof) for Common Stock at an exchange ratio of one share
of Common  Stock per Right,  appropriately  adjusted to reflect any stock split,
stock  dividend or similar  transaction  occurring  after the date hereof  (such
amount  per  Right  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 an Acquiring Person shall have become the
Beneficial Owner of shares of Common Stock aggregating 50% or more of the shares
of Common  Stock then  outstanding.  From and after the  occurrence  of an event
specified in Section 13(a)  hereof,  any Rights that  theretofore  have not been
exchanged pursuant to this Section 24(a) shall thereafter be exercisable only in
accordance  with  Section 13 and may not be  exchanged  pursuant to this Section
24(a).  The  exchange  of the  Rights  by the  Board  of  Directors  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.

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

          (c) The Company may at its option  substitute,  and, in the event that
there shall not be sufficient  shares of Common Stock issued but not outstanding
or  authorized  but unissued to permit an exchange of Rights for Common Stock as
contemplated in accordance with this Section 24, the Company shall substitute to
the  extent of such  insufficiency,  for each  share of Common  Stock that would
otherwise be issuable upon exchange of a Right,  a number of shares of Preferred
Stock or  fraction  thereof (or  equivalent  preferred  shares,  as such term is
defined  in  Section  11(b))  such  that the  current  per  share  market  price
(determined  pursuant to Section 11(d)  hereof) of one share of Preferred  Stock
(or equivalent  preferred share)  multiplied by such number or fraction is equal
to the current per share market  price of one share of Common Stock  (determined
pursuant to Section 11(d) hereof) as of the date of such exchange.

                                       30

<PAGE>

     Section 25. Notice of Certain Events.

          (a) In case the  Company  shall at any time  after the  earlier of the
Distribution  Date or the Stock Acquisition Date propose (i) to pay any dividend
payable in stock of any class to the holders of its  Preferred  Stock or to make
any other  distribution  to the  holders of its  Preferred  Stock  (other than a
regular quarterly cash dividend),  (ii) to offer to the holders of its Preferred
Stock rights or warrants to subscribe for or to purchase any  additional  shares
of  Preferred  Stock or shares  of stock of any  class or any other  securities,
rights or options,  (iii) to effect any  reclassification of its Preferred Stock
(other than a reclassification  involving only the subdivision or combination of
outstanding  Preferred  Stock),  (iv) to effect the liquidation,  dissolution or
winding  up of the  Company,  or (v) to pay any  dividend  on the  Common  Stock
payable in Common Stock or to effect a subdivision, combination or consolidation
of the  Common  Stock (by  reclassification  or  otherwise  than by  payment  of
dividends in Common  Stock),  then, in each such case, the Company shall give to
each holder of a Right  Certificate,  in  accordance  with Section 26 hereof,  a
notice of such  proposed  action,  which  shall  specify the record date for the
purposes of such stock dividend,  or distribution of rights or warrants,  or the
date on which such  liquidation,  dissolution or winding up is to take place and
the date of  participation  therein by the  holders of the Common  Stock  and/or
Preferred  Stock,  if any such date is to be fixed,  and such notice shall be so
given in the case of any action  covered by clause (i) or (ii) above at least 10
days prior to the record date for determining holders of the Preferred Stock for
purposes of such action,  and in the case of any such other action,  at least 10
days  prior to the date of the  taking  of such  proposed  action or the date of
participation therein by the holders of the Common Stock and/or Preferred Stock,
whichever shall be the earlier.

          (b) In case any event  described  in Section  11(a)(ii)  or Section 13
shall occur then the Company  shall as soon as  practicable  thereafter  give to
each holder of a Right  Certificate (or if occurring  prior to the  Distribution
Date, the holders of the Common Stock) in accordance  with Section 26 hereof,  a
notice of the  occurrence of such event,  which notice shall describe such event
and the consequences of such event to holders of Rights under Section  11(a)(ii)
and Section 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 Right  Certificate  to
or on the Company  shall be  sufficiently  given or made if sent by  first-class
mail, postage prepaid, addressed (until another address is filed in writing with
the Rights Agent) as follows:

                       Forte Software, Inc.
                       1800 Harrison Street
                       Oakland, California 94612
                       Attention: Secretary

                                       31

<PAGE>

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

                    BankBoston, N.A.
                    c/o Boston EquiServe Limited Partnership
                    150 Royall Street
                    Canton, Massachusetts  02021
                    Attention:  Shareholder Services

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

     Section  27.  Supplements  and  Amendments.   Except  as  provided  in  the
penultimate  sentence  of this  Section  27,  for so long as the Rights are then
redeemable,  the Company may in its sole and absolute discretion, and the Rights
Agent shall if the Company so directs, supplement or amend any provision of this
Agreement in any respect  without the approval of any holders of the Rights.  At
any time when the Rights are no longer  redeemable,  except as  provided  in the
penultimate  sentence of this  Section 27, the Company may, and the Rights Agent
shall, if the Company so directs, 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 provision herein, (iii) shorten or lengthen any time
period hereunder,  or (iv) change or supplement the provisions  hereunder in any
manner which the Company may deem necessary or desirable;  provided that no such
supplement or amendment shall  adversely  affect the interests of the holders of
Rights as such (other than an  Acquiring  Person or an Affiliate or Associate of
an Acquiring Person), and no such amendment may cause the Rights again to become
redeemable  or cause the  Agreement  again to  become  amendable  other  than in
accordance  with  this  sentence.  Notwithstanding  anything  contained  in this
Agreement  to the  contrary,  no  supplement  or  amendment  shall be made which
changes  the  Redemption  Price.  Upon the  delivery  of a  certificate  from an
appropriate  officer of the Company which states that the proposed supplement or
amendment is in  compliance  with the terms of this Section 27, the Rights Agent
shall execute such supplement or amendment.

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

     Section 29. 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 Right  Certificates  (and,  prior to the Distribution
Date, the Common Stock) any legal or equitable right, remedy or claim under this
Agreement; but this Agreement shall be for

                                       32

<PAGE>

the  sole and  exclusive  benefit  of the  Company,  the  Rights  Agent  and the
registered  holders of the Right  Certificates  (and,  prior to the Distribution
Date, the Common Stock).

     Section 30. Determinations and Actions by the Board of Directors. The Board
of  Directors of the Company  shall have the  exclusive  power and  authority to
administer  this  Agreement  and to exercise the rights and powers  specifically
granted to the Board of Directors of the Company or to the Company, or as may be
necessary or  advisable  in the  administration  of this  Agreement,  including,
without limitation,  the right and power to (i) interpret the provisions of this
Agreement and (ii) make all determinations deemed necessary or advisable for the
administration of this Agreement (including, without limitation, a determination
to  redeem  or not  redeem  the  Rights or to amend  this  Agreement).  All such
actions,  calculations,   interpretations  and  determinations  (including,  for
purposes of clause (y) below,  all omissions with respect to the foregoing) that
are done or made by the Board of Directors  of the Company in good faith,  shall
(x) be final,  conclusive  and binding on the  Company,  the Rights  Agent,  the
holders of the Rights,  as such, and all other parties,  and (y) not subject the
Board of Directors to any liability to the holders of the Rights.

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

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

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

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


                                       33

<PAGE>


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

                                             FORTE SOFTWARE, INC.



                                             By:    /s/ Robert Gorlin
                                                    -------------------
                                             Name:  Robert Gorlin

                                             Title: Vice President and
                                                    General Counsel



                                             BANKBOSTON, N.A.,
                                             as Rights Agent



                                             By:    /s/ Laura A. Welch
                                                    -------------------
                                             Name:  Laura A. Welch

                                             Title: Administration Manger







                       SIGNATURE PAGE TO RIGHTS AGREEMENT

<PAGE>

                                                                       Exhibit A


                                     FORM OF
                           CERTIFICATE OF DESIGNATION

                                       of

                  SERIES A JUNIOR PARTICIPATING PREFERRED STOCK

                                       of

                              FORTE SOFTWARE, INC.

             Pursuant to Section 151 of the General Corporation Law
                            of the State of Delaware

                  Forte  Software,  Inc., a  corporation  organized and existing
under the General  Corporation Law of the State of Delaware,  in accordance with
the provisions of Section 103 thereof, DOES HEREBY CERTIFY:

                  That  pursuant  to  the  authority  vested  in  the  Board  of
Directors  in  accordance  with  the  provisions  of the  Amended  and  Restated
Certificate  of  Incorporation  of the  said  Corporation,  the  said  Board  of
Directors on May 16, 1997 adopted the following  resolution creating a series of
45,000 shares of Preferred  Stock  designated as "Series A Junior  Participating
Preferred Stock":

                           RESOLVED,  that pursuant to the  authority  vested in
                  the Board of Directors of this  Corporation in accordance with
                  the  provisions  of the Amended and  Restated  Certificate  of
                  Incorporation, a series of Preferred Stock, par value $.01 per
                  share, of the  Corporation be and hereby is created,  and that
                  the  designation  and number of shares  thereof and the voting
                  and other powers,  preferences  and  relative,  participating,
                  optional or other  rights of the shares of such series and the
                  qualifications,  limitations and  restrictions  thereof are as
                  follows:

                  Series A Junior Participating Preferred Stock

                  1.   Designation  and  Amount.  There  shall  be a  series  of
Preferred  Stock that  shall be  designated  as  "Series A Junior  Participating
Preferred  Stock," and the number of shares  constituting  such series  shall be
45,000. Such number of shares may be increased or decreased by resolution of the
Board of Directors;  provided, however, that no decrease shall reduce the number
of  shares  of Series A Junior  Participating  Preferred  Stock to less than the
number of shares then issued and outstanding  plus the number of shares issuable
upon exercise of outstanding  rights,  options or warrants or upon conversion of
outstanding securities issued by the Corporation.


<PAGE>

                  2.   Dividends and Distribution.

                       (A)  Subject  to the  prior  and  superior  rights of the
holders of any shares of any class or series of stock of the Corporation ranking
prior and  superior  to the  shares of Series A Junior  Participating  Preferred
Stock  with  respect  to  dividends,  the  holders  of shares of Series A Junior
Participating  Preferred  Stock,  in  preference to the holders of shares of any
class or  series of stock of the  Corporation  ranking  junior  to the  Series A
Junior  Participating  Preferred Stock in respect thereof,  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 March,  June,  September  and  December,  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 Junior  Participating  Preferred  Stock,  in an
amount per share  (rounded to the nearest  cent) equal to the greater of (a) $10
or (b) the  Adjustment  Number (as defined  below) times the aggregate per share
amount of all cash dividends,  and the Adjustment Number 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,  par value $.01 per share, of the Corporation  (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 Junior  Participating
Preferred Stock.  The "Adjustment  Number" shall initially be 1000. In the event
the  Corporation  shall at any time after May 16,  1997 (i)  declare and pay any
dividend on 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 Adjustment Number in effect
immediately prior to such event shall be adjusted by multiplying such Adjustment
Number by a fraction  the  numerator  of which is the number of shares of Common
Stock  outstanding  immediately after such event and the denominator of which is
the number of shares of Common Stock that were outstanding  immediately prior to
such event.

                       (B)  The   Corporation   shall   declare  a  dividend  or
distribution on the Series A Junior 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 and be cumulative on
outstanding  shares of Series A Junior  Participating  Preferred  Stock from the
Quarterly  Dividend Payment Date next preceding the date of issue of such shares
of Series A Junior  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 Junior 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 and be cumulative  from such
Quarterly  Dividend  Payment Date.  Accrued but unpaid  dividends shall

<PAGE>

not bear interest. Dividends paid on the shares of Series A Junior 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 Junior  Participating  Preferred Stock entitled to receive payment of a
dividend or distribution  declared  thereon,  which record date shall be no more
than 60 days prior to the date fixed for the payment thereof.

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

                       (A) Each share of Series A Junior Participating Preferred
Stock  shall  entitle  the  holder  thereof  to a number  of votes  equal to the
Adjustment  Number on all matters submitted to a vote of the stockholders of the
Corporation.

                       (B) Except as  required  by law and by Section 10 hereof,
holders of Series A Junior  Participating  Preferred Stock shall have no special
voting rights and their consent shall not be required (except to the extent they
are  entitled  to vote with  holders of Common  Stock as set forth  herein)  for
taking any corporate action.

                  4.   Certain Restrictions.

                       (A) Whenever  quarterly  dividends or other  dividends or
distributions  payable on the Series A Junior  Participating  Preferred Stock as
provided  in Section 2 are in  arrears,  thereafter  and until all  accrued  and
unpaid dividends and distributions, whether or not declared, on shares of Series
A Junior 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 Junior 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 Junior
Participating  Preferred  Stock,  except  dividends paid ratably on the Series A
Junior  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; or

                           (iii) purchase or otherwise acquire for consideration
any shares of Series A Junior  Participating  Preferred  Stock, or any shares of
stock  ranking  on a parity  with the  Series A Junior  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 Series A
Junior Participating Preferred Stock, or to such holders and holders of any such
shares ranking on a parity therewith, upon such terms as the Board of Directors,
after  consideration of 

<PAGE>

the respective  annual  dividend rates and other relative rights and preferences
of the respective series and classes,  shall determine in good faith will result
in fair and equitable treatment among the respective series or classes.

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

                   5.  Reacquired   Shares.   Any  shares  of  Series  A  Junior
Participating Preferred Stock purchased or otherwise acquired by the Corporation
in any  manner  whatsoever  shall be  retired  promptly  after  the  acquisition
thereof.  All such shares  shall upon their  retirement  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 any  conditions  and  restrictions  on issuance set forth
herein.

                   6.  Liquidation,  Dissolution  or  Winding  Up.  (A) Upon any
liquidation,  dissolution  or  winding  up  of  the  Corporation,  voluntary  or
otherwise,  no  distribution  shall be made to the  holders  of  shares of stock
ranking  junior  (either as to dividends  or upon  liquidation,  dissolution  or
winding up) to the Series A Junior  Participating  Preferred Stock unless, prior
thereto, the holders of shares of Series A Junior Participating  Preferred Stock
shall have received an amount per share (the "Series A Liquidation  Preference")
equal to the  greater  of (i) $1000 plus an amount  equal to accrued  and unpaid
dividends and  distributions  thereon,  whether or not declared,  to the date of
such payment,  or (ii) the  Adjustment  Number times the per share amount of all
cash and other  property to be  distributed  in respect of the Common Stock upon
such liquidation, dissolution or winding up of the Corporation.

                       (B) In the event,  however, that there are not sufficient
assets  available  to  permit  payment  in  full  of the  Series  A  Liquidation
Preference  and the  liquidation  preferences of all other classes and series of
stock of the Corporation, if any, that rank on a parity with the Series A Junior
Participating  Preferred Stock in respect thereof, then the assets available for
such  distribution  shall be distributed  ratably to the holders of the Series A
Junior  Participating  Preferred  Stock and the holders of such parity shares in
proportion to their respective liquidation preferences.

                       (C)   Neither   the  merger  or   consolidation   of  the
Corporation into or with another  corporation nor the merger or consolidation of
any  other  corporation  into or with the  Corporation  shall be  deemed to be a
liquidation,  dissolution or winding up of the Corporation within the meaning of
this Section 6.

                   7. Consolidation,  Merger, Etc. In case the Corporation shall
enter into any consolidation,  merger, combination or other transaction in which
the  outstanding  shares of Common Stock are exchanged for or changed into other
stock or securities,  cash and/or any other property, then in any such case each
share of Series A Junior Participating Preferred Stock shall at the same time be
similarly  exchanged  or changed in an amount per share equal to the  Adjustment
Number times the aggregate  amount of stock,  securities,  cash and/or any other

<PAGE>

property  (payable  in kind),  as the case may be,  into which or for which each
share of Common Stock is changed or exchanged.

                   8. No  Redemption.  Shares of  Series A Junior  Participating
Preferred Stock shall not be subject to redemption by the Company.

                   9. Ranking. The Series A Junior Participating Preferred Stock
shall rank junior to all other series of the  Preferred  Stock as to the payment
of dividends and as to the distribution of assets upon liquidation,  dissolution
or winding up, unless the terms of any such series shall provide otherwise,  and
shall rank senior to the Common Stock as to such matters.

                   10. Amendment. At any time that any shares of Series A Junior
Participating  Preferred  Stock  are  outstanding,   the  Amended  and  Restated
Certificate  of  Incorporation  of the  Corporation  shall not be amended in any
manner which would materially alter or change the powers, preferences or special
rights of the Series A Junior Participating Preferred Stock so as to affect them
adversely  without  the  affirmative  vote of the holders of  two-thirds  of the
outstanding  shares of Series A Junior  Participating  Preferred  Stock,  voting
separately as a class.

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

                  IN  WITNESS   WHEREOF,   the  undersigned  has  executed  this
Certificate this __ day of May, 1997.

                                             FORTE SOFTWARE, INC.



                                             By: _______________________________

                                             Name: _____________________________

                                             Title: ____________________________


<PAGE>

                                                                       Exhibit B


                            Form of Right Certificate


Certificate No. R-______

                  NOT EXERCISABLE AFTER MAY 16, 2007 OR EARLIER IF REDEMPTION OR
                  EXCHANGE OCCURS.  THE RIGHTS ARE SUBJECT TO REDEMPTION AT $.01
                  PER RIGHT AND TO EXCHANGE ON THE TERMS SET FORTH IN THE RIGHTS
                  AGREEMENT.  UNDER CERTAIN  CIRCUMSTANCES,  AS SET FORTH IN THE
                  RIGHTS AGREEMENT, RIGHTS OWNED BY OR TRANSFERRED TO ANY PERSON
                  WHO IS OR  BECOMES  AN  ACQUIRING  PERSON  (AS  DEFINED IN THE
                  RIGHTS AGREEMENT) AND CERTAIN  TRANSFEREES THEREOF WILL BECOME
                  NULL AND VOID AND WILL NO LONGER BE TRANSFERABLE.


                                RIGHT CERTIFICATE

                              FORTE SOFTWARE, INC.

                  This certifies that ____________________________ or registered
assigns,  is the registered owner of the number of Rights set forth above,  each
of which  entitles  the owner  thereof,  subject  to the terms,  provisions  and
conditions of the Rights Agreement, dated as of May 16, 1997, as the same may be
amended  from time to time (the "Rights  Agreement"),  between  Forte  Software,
Inc., a Delaware  corporation (the "Company"),  and BankBoston,  N.A., as Rights
Agent (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.,  San  Francisco,  California  time,  on May 16, 2007 at the office or
agency of the Rights Agent  designated for such purpose,  or of its successor as
Rights Agent, one one-thousandth of a fully paid non-assessable  share of Series
A Junior Participating Preferred Stock, par value $.01 per share (the "Preferred
Stock"), of the Company at a purchase price of $125.00 per one one-thousandth of
a share of  Preferred  Stock  (the  "Purchase  Price"),  upon  presentation  and
surrender of this Right  Certificate  with the Form of Election to Purchase duly
executed.  The number of Rights  evidenced by this Rights  Certificate  (and the
number  of one  one-thousandths  of a share  of  Preferred  Stock  which  may be
purchased  upon  exercise  hereof) set forth above,  and the Purchase  Price set
forth above,  are the number and Purchase Price as of May 16, 1997, based on the
Preferred  Stock  as  constituted  at  such  date.  As  provided  in the  Rights
Agreement,  the Purchase Price, the number of one  one-thousandths of a share of
Preferred  Stock (or other  securities or property)  which may be purchased upon
the  exercise  of the Rights and the  number of Rights  evidenced  by this Right
Certificate  are subject to  modification  and adjustment  upon the happening of
certain events.


<PAGE>

                  This  Right  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 Right  Certificates.
Copies of the Rights Agreement are on file at the principal executive offices of
the Company and the  above-mentioned  office or agency of the Rights Agent.  The
Company will mail to the holder of this Right  Certificate  a copy of the Rights
Agreement without charge after receipt of a written request therefor.

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

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

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

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

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


                                       B-2

<PAGE>


                  WITNESS the facsimile  signature of the proper officers of the
Company and its corporate seal. Dated as of _________ __, 1997.

                                           FORTE SOFTWARE, INC.



                                           By:__________________________________
                                                     [Title]



ATTEST:



____________________________________
[Title]



Countersigned:



BANKBOSTON, N.A., as Rights Agent



By__________________________________
         [Title]


<PAGE>


                    Form of Reverse Side of Right Certificate

                               FORM OF ASSIGNMENT

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

     FOR VALUE  RECEIVED  __________________________  hereby sells,  assigns and

transfers unto _________________________________________________________________

________________________________________________________________________________
                  (Please print name and address of transferee)

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

Dated:  ____________________________



                                            ____________________________________
                                                        Signature



Signature Guaranteed:



                  Signatures  must  be  guaranteed  by a  bank,  trust  company,
broker,  dealer or other  eligible  institution  participating  in a  recognized
signature guarantee medallion program.

________________________________________________________________________________
                                (To be completed)

                  The undersigned  hereby certifies that the Rights evidenced by
this Right  Certificate are not beneficially  owned by, were not acquired by the
undersigned  from,  and are not  being  assigned  to an  Acquiring  Person or an
Affiliate or Associate thereof (as defined in the Rights Agreement).



                                            ____________________________________
                                                        Signature


<PAGE>


              Form of Reverse Side of Right Certificate - continued

                          FORM OF ELECTION TO PURCHASE

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



To FORTE SOFTWARE, INC.:

     The  undersigned  hereby  irrevocably  elects to exercise  ________  Rights
represented by this Right  Certificate to purchase the shares of Preferred Stock
(or other securities or property)  issuable upon the exercise of such Rights and
requests  that  certificates  for such shares of Preferred  Stock (or such other
securities) be issued in the name of:

________________________________________________________________________________
                         (Please print name and address)

________________________________________________________________________________

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

Please insert social security
or other identifying number

________________________________________________________________________________
                         (Please print name and address)

________________________________________________________________________________

Dated:________________________

                                            ____________________________________
                                                        Signature

        (Signature must conform to holder specified on Right Certificate)

Signature Guaranteed:

     Signature must be guaranteed by a bank,  trust company,  broker,  dealer or
other eligible  institution  participating in a recognized  signature  guarantee
medallion program.



<PAGE>


              Form of Reverse Side of Right Certificate - continued



________________________________________________________________________________
                                (To be completed)

     The  undersigned   certifies  that  the  Rights  evidenced  by  this  Right
Certificate  are not  beneficially  owned  by,  and  were  not  acquired  by the
undersigned  from, an Acquiring Person or an Affiliate or Associate  thereof (as
defined in the Rights Agreement).



                                            ____________________________________
                                                        Signature

________________________________________________________________________________


                                     NOTICE

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

     In the event the certification set forth above in the Form of Assignment or
the Form of Election to  Purchase,  as the case may be, is not  completed,  such
Assignment or Election to Purchase will not be honored.




<PAGE>

                                                                       Exhibit C



          UNDER  CERTAIN  CIRCUMSTANCES,  AS SET  FORTH  IN  THE  RIGHTS
          AGREEMENT, RIGHTS OWNED BY OR TRANSFERRED TO ANY PERSON WHO IS
          OR  BECOMES  AN  ACQUIRING  PERSON  (AS  DEFINED IN THE RIGHTS
          AGREEMENT)  AND CERTAIN  TRANSFEREES  THEREOF WILL BECOME NULL
          AND VOID AND WILL NO LONGER BE TRANSFERABLE.

                          SUMMARY OF RIGHTS TO PURCHASE
                          SHARES OF PREFERRED STOCK OF
                              FORTE SOFTWARE, INC.

                  On May 16, 1997,  the Board of  Directors  of Forte  Software,
Inc. (the  "Company")  declared a dividend of one preferred share purchase right
(a  "Right")  for each  outstanding  share of common  stock,  par value $.01 per
share, of the Company (the "Common  Stock").  The dividend is payable on June 3,
1997 (the "Record Date") to the  stockholders of record on that date. Each Right
entitles the registered  holder to purchase from the Company one  one-thousandth
of a share of Series A Junior Participating  Preferred Stock, par value $.01 per
share,  of the  Company  (the  "Preferred  Stock") at a price of $125.00 per one
one-thousandth of a share of Preferred Stock (the "Purchase Price"),  subject to
adjustment.  The  description  and terms of the Rights are set forth in a Rights
Agreement dated as of May 16, 1997, as the same may be amended from time to time
(the "Rights  Agreement"),  between the Company and BankBoston,  N.A., as Rights
Agent (the "Rights Agent").

                  Until the  earlier to occur of (i) 10 days  following a public
announcement  that a person or group of affiliated  or associated  persons (with
certain exceptions,  an "Acquiring Person") has acquired beneficial ownership of
15% or more of the  outstanding  shares of Common Stock or (ii) 10 business days
(or such later  date as may be  determined  by action of the Board of  Directors
prior to such  time as any  person or group of  affiliated  persons  becomes  an
Acquiring Person) following the commencement of, or announcement of an intention
to make, a tender offer or exchange offer the consummation of which would result
in the  beneficial  ownership  by a  person  or  group  of 15%  or  more  of the
outstanding  shares of Common  Stock (the earlier of such dates being called the
"Distribution  Date"), the Rights will be evidenced,  with respect to any of the
Common Stock  certificates  outstanding  as of the Record  Date,  by such Common
Stock certificate together with a copy of this Summary of Rights.

                  The Rights  Agreement  provides that,  until the  Distribution
Date (or earlier expiration of the Rights),  the Rights will be transferred with
and only  with  the  Common  Stock.  Until  the  Distribution  Date (or  earlier
expiration of the Rights), new Common Stock certificates issued after the Record
Date upon  transfer or new  issuances  of Common  Stock will  contain a notation
incorporating the Rights Agreement by reference. Until the Distribution Date (or
earlier   expiration  of  the  Rights),   the  surrender  for  transfer  of  any
certificates for shares of Common 

                                      C-1

<PAGE>

Stock outstanding as of the Record Date, even without such notation or a copy of
this  Summary  of  Rights,  will also  constitute  the  transfer  of the  Rights
associated with the shares of Common Stock represented by such  certificate.  As
soon as  practicable  following the  Distribution  Date,  separate  certificates
evidencing the Rights ("Right Certificates") will be mailed to holders of record
of the Common  Stock as of the close of  business on the  Distribution  Date and
such separate Right Certificates alone will evidence the Rights.

                  The Rights are not exercisable  until the  Distribution  Date.
The Rights will expire on May 16, 2007 (the "Final Expiration Date"), unless the
Final  Expiration  Date is advanced or extended or unless the Rights are earlier
redeemed or exchanged by the Company, in each case as described below.

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

                  The number of  outstanding  Rights is subject to adjustment in
the event of a stock  dividend on the Common  Stock  payable in shares of Common
Stock or  subdivisions,  consolidations  or  combinations  of the  Common  Stock
occurring, in any such case, prior to the Distribution Date.

                  Shares of Preferred  Stock  purchasable  upon  exercise of the
Rights will not be redeemable.  Each share of Preferred  Stock will be entitled,
when, as and if declared,  to a minimum preferential  quarterly dividend payment
of $10 per share but will be entitled to an aggregate dividend of 1000 times the
dividend  declared  per share of  Common  Stock.  In the  event of  liquidation,
dissolution  or winding up of the Company,  the holders of the  Preferred  Stock
will be entitled to a minimum  preferential payment of $1000 per share (plus any
accrued but unpaid  dividends)  but will be entitled to an aggregate  payment of
1000 times the payment made per share of Common  Stock.  Each share of Preferred
Stock will have 1000 votes,  voting together with the Common Stock.  Finally, in
the event of any merger, consolidation or other transaction in which outstanding
shares of Common Stock are converted or exchanged, each share of Preferred Stock
will be entitled to receive  1000 times the amount  received per share of Common
Stock. These rights are protected by customary antidilution provisions.

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

                  In the  event  that  any  person  or group  of  affiliated  or
associated  persons becomes an Acquiring Person,  each holder of a Right,  other
than Rights  beneficially  owned by the 

                                      C-2

<PAGE>

Acquiring  Person (which will thereupon  become void),  will thereafter have the
right to receive upon  exercise of a Right that number of shares of Common Stock
having a market value of two times the exercise price of the Right.

                  In the  event  that,  after a person  or group  has  become an
Acquiring  Person,  the  Company  is  acquired  in a merger  or  other  business
combination  transaction  or 50% or more of its  consolidated  assets or earning
power are sold,  proper  provisions  will be made so that each holder of a Right
(other than Rights  beneficially  owned by an  Acquiring  Person which will have
become  void) will  thereafter  have the right to receive upon the exercise of a
Right that number of shares of common  stock of the person with whom the Company
has engaged in the  foregoing  transaction  (or its parent)  that at the time of
such  transaction  have a market  value of two times the  exercise  price of the
Right.

                  At any time  after any person or group  becomes  an  Acquiring
Person and prior to the earlier of one of the events  described  in the previous
paragraph  or the  acquisition  by such  Acquiring  Person of 50% or more of the
outstanding  shares of Common  Stock,  the Board of Directors of the Company may
exchange the Rights (other than Rights owned by such Acquiring Person which will
have become void),  in whole or in part, for shares of Common Stock or Preferred
Stock (or a series of the Company's  preferred stock having  equivalent  rights,
preferences and privileges),  at an exchange ratio of one share of Common Stock,
or a fractional share of Preferred Stock (or other preferred  stock)  equivalent
in value thereto, per Right.

                  With certain  exceptions,  no adjustment in the Purchase Price
will be required until cumulative  adjustments require an adjustment of at least
1% in such Purchase  Price.  No fractional  shares of Preferred  Stock or Common
Stock will be issued (other than fractions of Preferred Stock which are integral
multiples of one one-thousandth of a share of Preferred Stock, which may, at the
election of the  Company,  be  evidenced by  depositary  receipts),  and in lieu
thereof an adjustment in cash will be made based on the current  market price of
the Preferred Stock or the Common Stock.

                  At any  time  prior to the time an  Acquiring  Person  becomes
such, the Board of Directors of the Company may redeem the Rights in whole,  but
not in part, at a price of $.01 per Right (the "Redemption Price"),  payable, at
the option of the Company, in cash, shares of Common Stock or such other form of
consideration  as the Board of Directors  of the Company  shall  determine.  The
redemption  of the Rights 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.  Immediately upon any redemption of the Rights, the right to exercise
the Rights will terminate and the only right of the holders of Rights will be to
receive the Redemption Price.

                  For so long as the Rights  are then  redeemable,  the  Company
may, except with respect to the Redemption Price,  amend the Rights Agreement in
any manner.  After the Rights are no longer redeemable,  the Company may, except
with respect to the Redemption  Price,  amend the Rights Agreement in any manner
that does not adversely affect the interests of holders of the Rights.

                                      C-3

<PAGE>

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

                  A copy  of the  Rights  Agreement  has  been  filed  with  the
Securities and Exchange Commission as an Exhibit to a Registration  Statement on
Form 8-A. A copy of the Rights  Agreement is  available  free of charge from the
Company.  This summary description of the Rights does not purport to be complete
and is qualified in its  entirety by reference to the Rights  Agreement,  as the
same may be amended from time to time,  which is hereby  incorporated  herein by
reference.





                                      C-4


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