ARBOR SOFTWARE CORP
8-A12G, 1998-06-17
PREPACKAGED SOFTWARE
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<PAGE>   1
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM 8-A

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

                           ARBOR SOFTWARE CORPORATION
- - --------------------------------------------------------------------------------
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

              Delaware                                        77-0277772
- - ----------------------------------------------        --------------------------
(STATE OF INCORPORATION OR ORGANIZATION)                   (I.R.S. EMPLOYER
                                                           IDENTIFICATION NO.)

          1344 Crossman Avenue
         Sunnyvale, California                                  94089
- - -----------------------------------------------       -------------------------
(ADDRESS OF PRINCIPAL EXECUTIVE OFFICES)                      (ZIP CODE)



If this Form relates to the            If this Form relates to the         
registration of a class of debt        registration of a class of debt     
securities and is effective upon       securities and is to become         
filing pursuant to General             effective simultaneously with the   
Instruction A(c)(1) please check       effectiveness of a concurrent       
the following box.                     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>   2
ITEM 1.  Description of Registrant's Securities to be Registered.

         On June 15, 1998, the Board of Directors of Arbor Software
Corporation (the "Company") declared a dividend of one preferred share purchase
right (a "Right") for each outstanding share of common stock, par value $0.001
per share (the "Common Shares") outstanding on July 3, 1998 (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 $0.001 per share
(the "Preferred Shares"), of the Company, at a price of $250 per one
one-thousandth of a Preferred Share (the "Purchase Price"), subject to
adjustment. The description and terms of the Rights are set forth in a Rights
Agreement (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 (an
"Acquiring Person") has acquired beneficial ownership of 15% or in the case of
(i) a Grandfathered Stockholder other than a Second Tier Grandfathered
Stockholder, 25%, or (ii) a Second Tier Grandfathered Stockholder, the greater
of 15% or such percentage as is beneficially owned by each Amerindo Holder plus
1%, or more of the outstanding Common Shares 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 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 in the case of (i) a Grandfathered Stockholder other than a
Second Tier Grandfathered Stockholder, 25%, or (ii) a Second Tier Grandfathered
Stockholder, the greater of 15% or such percentage as is beneficially owned by
each Amerindo Holder plus 1%, or more of such outstanding Common Shares (the
earlier of such dates being called the "Distribution Date"), the Rights will be
evidenced, with respect to any of the Common Share certificates outstanding as
of the Record Date, by such Common Share certificate with a copy of this Summary
of Rights attached thereto.

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

         The Rights are not exercisable until the Distribution Date. The Rights
will expire on July 3, 2008 (the "Final Expiration Date"), unless the Final
Expiration Date is extended or unless the Rights are earlier redeemed by the
Company, in each case, as described below.



                                       2
<PAGE>   3
         The Purchase Price payable, and the number of Preferred Shares or other
securities or property issuable, upon exercise of the Rights are subject to
adjustment from time to time to prevent dilution (i) in the event of a stock
dividend on, or a subdivision, combination or reclassification of, the Preferred
Shares, (ii) upon the grant to holders of the Preferred Shares of certain rights
or warrants to subscribe for or purchase Preferred Shares at a price, or
securities convertible into Preferred Shares with a conversion price, less than
the then current market price of the Preferred Shares or (iii) upon the
distribution to holders of the Preferred Shares of evidences of indebtedness or
assets (excluding regular periodic cash dividends paid out of earnings or
retained earnings or dividends payable in Preferred Shares) or of subscription
rights or warrants (other than those referred to above).

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

         Preferred Shares purchasable upon exercise of the Rights will not be
redeemable. Each Preferred Share will be entitled to a quarterly dividend
payment of 1000 times the dividend declared per Common Share. In the event of
liquidation, the holders of the Preferred Shares will be entitled to an
aggregate payment of 1000 times the aggregate payment made per Common Share.
Each Preferred Share will have 1000 votes, voting together with the Common
Shares. In the event of any merger, consolidation or other transaction in which
Common Shares are exchanged, each Preferred Share will be entitled to receive
1000 times the amount received per Common Share. These rights are protected by
customary antidilution provisions.

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

         From and after the occurrence of an event described in Section
11(a)(ii) of the Rights Agreement, if the Rights evidenced by this Right
Certificate are or were at any time on or after the earlier of (x) the date of
such event and (y) the Distribution Date (as such term is defined in the Rights
Agreement) acquired or beneficially owned by an Acquiring Person or an Associate
or Affiliate of an Acquiring Person (as such terms are defined in the Rights
Agreement), such Rights shall become void, and any holder of such Rights shall
thereafter have no right to exercise such Rights.

         In the event that, at any time after a Person becomes 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 provision will be made so that each holder of a Right will thereafter
have the right to receive, upon the exercise thereof at the then current
exercise price of the Right, that number of shares of common stock of the
acquiring company which at the time of such transaction will have a market value
of two times the exercise price of the Right. In the event that any person
becomes an Acquiring Person, proper provision shall be made so that each holder
of a Right, other than Rights beneficially owned by the Acquiring Person and its



                                       3
<PAGE>   4

Affiliates and Associates (which will thereafter be void), will thereafter have
the right to receive upon exercise that number of Common Shares having a market
value of two times the exercise price of the Right. If the Company does not have
sufficient Common Shares to satisfy such obligation to issue Common Shares, or
if the Board of Directors so elects, the Company shall deliver upon payment of
the exercise price of a Right an amount of cash or securities equivalent in
value to the Common Shares issuable upon exercise of a Right; provided that, if
the Company fails to meet such obligation within 30 days following the later of
(x) the first occurrence of an event triggering the right to purchase Common
Shares and (y) the date on which the Company's right to redeem the Rights
expires, the Company must deliver, upon exercise of a Right but without
requiring payment of the exercise price then in effect, Common Shares (to the
extent available) and cash equal in value to the difference between the value of
the Common Shares otherwise issuable upon the exercise of a Right and the
exercise price then in effect. The Board of Directors may extend the 30-day
period described above for up to an additional 60 days to permit the taking of
action that may be necessary to authorize sufficient additional Common Shares to
permit the issuance of Common Shares upon the exercise in full of the Rights.

         At any time after any Person becomes an Acquiring Person and prior to
the acquisition by any person or group of a majority of the outstanding Common
Shares, the Board of Directors of the Company may exchange the Rights (other
than Rights owned by such person or group which have become void), in whole or
in part, at an exchange ratio of one Common Share per Right (subject to
adjustment).

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

         At any time prior to the time any Person becomes an Acquiring Person,
the Board of Directors of the Company may redeem the Rights in whole, but not in
part, at a price of $0.01 per Right (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.
Immediately upon any redemption of the Rights, the right to exercise the Rights
will terminate and the only right of the holders of Rights will be to receive
the Redemption Price.

         The terms of the Rights may be amended by the Board of Directors of the
Company without the consent of the holders of the Rights, except that from and
after such time as any person becomes an Acquiring Person no such amendment may
adversely affect the interests of the holders of the Rights (other than the
Acquiring Person and its Affiliates and Associates).

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



                                       4
<PAGE>   5

         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 June 15, 1998 between the
                 Company and BankBoston, N.A., which includes 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.



                                       5
<PAGE>   6
                                    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.

                                       Arbor Software Corporation
                                       (Registrant)


Date:  June 12, 1998                 By:  /s/ Stephen V. Imbler
                                          ______________________________________
                                          Stephen V. Imbler
                                          Senior Vice President and Chief 
                                          Financial Officer (Duly Authorized 
                                          Officer and Principal Financial 
                                          Officer)



                                       6
<PAGE>   7
                                    EXHIBITS

EXHIBIT
NUMBER           DESCRIPTION
- - -------          -----------
1                Rights Agreement, dated as of June 15, 1998 between the Company
                 and BankBoston, N.A., which includes 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.



<PAGE>   1
                                                                       EXHIBIT 1



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


                           ARBOR SOFTWARE CORPORATION

                                       and

                                BANKBOSTON, N.A.

                                  Rights Agent

                                Rights Agreement

                           Dated as of June 15, 1998



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

<PAGE>   2
                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                          Page
                                                                                          ----
<S>                                                                                       <C>
Section 1.            Certain Definitions....................................................2

Section 2.            Appointment of Rights Agent............................................8

Section 3.            Issue of Right Certificates............................................8

Section 4.            Form of Right Certificates............................................11

Section 5.            Countersignature and Registration.....................................12

Section 6.            Transfer, Split Up, Combination and Exchange of
                      Right Certificates; Mutilated, Destroyed, Lost or
                      Stolen Right Certificates.............................................13

Section 7.            Exercise of Rights; Purchase Price; Expiration

                      Date of Rights........................................................14

Section 8.            Cancellation and Destruction of Right Certificates....................17

Section 9.            Status and Availability of Preferred Shares...........................17

Section 10.           Preferred Shares Record Date..........................................18

Section 11.           Adjustment of Purchase Price, Number of Shares or

                      Number of Rights......................................................19

Section 12.           Certificate of Adjustment.............................................33

Section 13.           Consolidation, Merger or Sale or Transfer of

                      Assets or Earning Power...............................................34

Section 14.           Fractional Rights and Fractional Shares...............................36

Section 15.           Rights of Action......................................................38

Section 16.           Agreement of Right Holders............................................39

Section 17.           Right Certificate Holder Not Deemed a Stockholder.....................40

Section 18.           Concerning the Rights Agent...........................................40
</TABLE>



                                      -i-
<PAGE>   3
<TABLE>
<S>                                                                                         <C>
Section 19.           Merger or Consolidation or Change of Name of
                      Rights Agent..........................................................41

Section 20.           Duties of Rights Agent................................................43

Section 21.           Change of Rights Agent................................................46

Section 22.           Issuance of New Right Certificates....................................47

Section 23.           Redemption............................................................48

Section 24.           Exchange..............................................................49

Section 25.           Notice of Certain Events..............................................52

Section 26.           Notices...............................................................53

Section 27.           Supplements and Amendments............................................54

Section 28.           Successors............................................................55

Section 29.           Benefits of this Agreement............................................55

Section 30.           Severability..........................................................55

Section 31.           Governing Law.........................................................56

Section 32.           Counterparts..........................................................56

Section 33.           Descriptive Headings..................................................56

Section 34.           Administration........................................................56

Exhibit A             Form of Certificate of Designation of Series A

                      Junior Participating Preferred Stock.................................A-1

Exhibit B             Form of Right Certificate............................................B-1

Exhibit C             Summary of Rights to Purchase Preferred Shares.......................C-1
</TABLE>



                                      -ii-
<PAGE>   4
                                RIGHTS AGREEMENT

             Agreement, dated as of June 15, 1998, between Arbor Software
Corporation, a Delaware corporation (the "Company"), and BankBoston, N.A. (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, par value $0.001 per share, of the Company (a "Common Share")
outstanding on the Close of Business on July 3, 1998 (the "Record Date")and has
authorized the issuance of one Right with respect to each additional Common
Share that shall become outstanding between the Record Date and the earliest of
the Close of Business on the Distribution Date, the Redemption Date and the
Close of Business on the Final Expiration Date (as such terms are hereinafter
defined) (provided that, subject to the terms hereof, one Right will also be
issued with each Common Share issued after the Close of Business on the
Distribution Date and prior to the earlier of the Redemption Date and the Close
of Business on the Final Expiration Date upon conversion of any Notes, as
hereinafter defined), each Right representing the right to purchase one
one-thousandth of a Preferred Share (as hereinafter defined), or such different
amount and/or kind of securities as shall be hereinafter provided.

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

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

             "Acquiring Person" shall mean any Person who or which, together
with all Affiliates and Associates of such Person, shall be the Beneficial Owner
of 15%, or in the case of (i) a Grandfathered Stockholder other than a Second
Tier Grandfathered Stockholder, 25% or (ii) a Second Tier Grandfathered
Stockholder, the greater of 15% or such percentage as is beneficially owned by
each Amerindo Holder plus 1%, or more of the Common Shares of the Company then
outstanding but shall not include (i) the Company, (ii) any Subsidiary of the
Company, (iii) any employee benefit plan of the Company or any Subsidiary of the
Company, (iv) any entity holding Common Shares for or pursuant to the terms of
any such employee benefit plan, or (v) Hyperion Software Corporation
("Hyperion") or any Affiliate or Associate thereof, to the extent such Persons




                                      -1-
<PAGE>   5

beneficially own Common Shares as of the date hereof and/or to the extent any
such Person's beneficial ownership of Common Shares is the result of the
Agreement and Plan of Merger dated as of May 25, 1998, by and among Hyperion,
the Company and HSC Merger Corp., as the same may be amended, or the Stock
Option Agreement, dated as of May 25, 1998, between Hyperion and the Company, as
the same may be amended. Notwithstanding the foregoing, (1) no Person shall
become an "Acquiring Person" as the result of an acquisition of Common Shares by
the Company which, by reducing the number of shares outstanding, increases the
proportionate number of shares beneficially owned by such Person to 15% (or such
other percentage as would otherwise result in such person becoming an Acquiring
Person) or more of the Common Shares of the Company then outstanding; provided,
however, that if a Person shall so become the Beneficial Owner of 15% (or such
other percentage) or more of the Common Shares of the Company then outstanding
by reason of an acquisition of Common Shares by the Company and shall, after
such share purchases by the Company, become the Beneficial Owner of an
additional 1% of the outstanding Common Shares of the Company, then such Person
shall be deemed to be an "Acquiring Person"; and (2) if the Board of Directors
of the Company determines in good faith that a Person who would otherwise be an
"Acquiring Person," as defined pursuant to the foregoing provisions of this
paragraph, has become such inadvertently, and such Person divests as promptly as
practicable a sufficient number of Common Shares so that such Person would no
longer be an "Acquiring Person," as defined pursuant to the foregoing provisions
of this paragraph, then such Person shall not be deemed to have become an
"Acquiring Person" for any purposes of this Agreement.

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

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

                     (i) which such Person or any of such Person's Affiliates or
Associates beneficially owns, directly or indirectly;



                                      -2-
<PAGE>   6
                     (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), written or otherwise, or upon the exercise of
conversion rights, exchange rights, rights (other than the Rights), warrants or
options, or otherwise; provided, however, that a Person shall not be deemed to
be the Beneficial Owner of, or to beneficially own, securities tendered pursuant
to a tender or exchange offer made pursuant to, and in accordance with, the
applicable rules and regulations promulgated under the Exchange Act by or on
behalf of such Person or any of such Person's Affiliates or Associates until
such tendered securities are accepted for purchase or exchange; or (B) the right
to vote pursuant to any agreement, arrangement or understanding; provided,
however, that a Person shall not be deemed the Beneficial Owner of, or to
beneficially own, any security if the agreement, arrangement or understanding to
vote such security (1) arises solely from a revocable proxy or consent given to
such Person in response to a public proxy or consent solicitation made pursuant
to, and in accordance with, the applicable rules and regulations promulgated
under the Exchange Act and (2) is not also then reportable on Schedule 13D under
the Exchange Act (or any comparable or successor report); or

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

             Notwithstanding anything in this definition of Beneficial Ownership
to the contrary, the phrase "then outstanding," when used with reference to a
Person's Beneficial Ownership of securities of the Company, shall mean the
number of such securities then issued and outstanding 



                                      -3-
<PAGE>   7

together with the number of such securities not then actually issued and
outstanding which such Person would be deemed to own beneficially hereunder.

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

             "Close of Business" on any given date shall mean 5:00 P.M., Boston,
Massachusetts time, on such date; provided, however, that if such date is not a
Business Day it shall mean 5:00 P.M., Boston, Massachusetts time, on the next
succeeding Business Day.

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

             "common stock equivalents" shall have the meaning set forth in
Section 11(a)(iii)(B)(3) hereof.

             "Current Value" shall have the meaning set forth in Section
11(a)(iii)(A)(1) hereof.

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

             "equivalent preferred shares" shall have the meaning set forth in
Section 11(b) hereof.

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

             "Final Expiration Date" shall mean July 3, 2008.

             "Grandfathered Stockholder" shall mean (i) Amerindo Investment
Advisors Inc. and its Affiliates and Associates (each an "Amerindo Holder"),
other than any Person who or which is not such an Affiliate or Associate on the
date of this Agreement and who or which subsequently acquires direct or indirect
control of Amerindo Investment Advisors Inc. without the prior written approval
of the board of directors of the Company (such Person a "Non-grandfathered
Stockholder"); and (ii) any Person not covered by (i), above, except a
Non-grandfathered Stockholder, who or which is the Beneficial Owner of Common
Shares beneficially owned by an Amerindo Holder (each such Person a "Second Tier
Grandfathered Stockholder").



                                      -4-
<PAGE>   8

             "Notes" shall mean the 4-1/2% Convertible Subordinated Notes of the
Company due 2005.

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

             "Purchase Price" shall have the meaning set forth in Section 7(b)
hereof.

             "Preferred Shares" shall mean shares of Series A Junior
Participating Preferred Stock, par value $0.001 per share, of the Company having
such rights and preferences upon adoption as are set forth in the form of
Certificate of Designation set forth as Exhibit A hereto.

             "Redemption Date" shall have the meaning set forth in Section 23
hereof.

             "Right Certificate" shall mean a certificate evidencing a Right in
substantially the form of Exhibit B hereto.

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

             "Shares Acquisition Date" shall mean the earlier of the date of (i)
the public announcement by the Company or an Acquiring Person that an Acquiring
Person has become such or (ii) the public disclosure of facts by the Company or
an Acquiring Person indicating that an Acquiring Person has become such.

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

             "Subsidiary" of any Person shall mean any Person of which a
majority of the voting power of the voting equity securities or equity interest
is owned, directly or indirectly, by such Person.

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

             "Summary of Rights" shall mean the Summary of Rights to Purchase
Preferred Shares in substantially the form of Exhibit C hereto.

             Section 2. Appointment of Rights Agent. The Company hereby appoints
the Rights Agent to act as agent for the Company and the holders of the Rights
(who, in accordance with Section 3 hereof, shall prior to the Distribution Date
also be the holders of the Common 



                                      -5-
<PAGE>   9
Shares) in accordance with the terms and conditions hereof, and the Rights Agent
hereby accepts such appointment. The Company may from time to time appoint such
co-Rights Agents as it may deem necessary or desirable, upon ten (10) days'
prior written notice to the Rights Agent. The Rights Agent shall have no duty to
supervise, and in no event be liable for, the acts or omissions of any such
co-Rights Agent.

             Section 3. Issue of Right Certificates.

                     (a) Until the earlier of (i) the tenth day after the Shares
Acquisition Date or (ii) the tenth Business Day (or such later date as may be
determined by action of the Board of Directors prior to such time as any Person
becomes an Acquiring Person) after the date of the commencement by any Person
(other than the Company, any Subsidiary of the Company, any employee benefit
plan of the Company or of any Subsidiary of the Company or any entity holding
Common Shares for or pursuant to the terms of any such plan) of, or of the first
public announcement of the intention of any Person (other than any of the
Persons referred to in the preceding parenthetical) to commence, a tender or
exchange offer the consummation of which would result in any Person becoming the
Beneficial Owner of Common Shares aggregating 15% or in the case of (i) a
Grandfathered Stockholder other than a Second Tier Grandfathered Stockholder,
25%, or (ii) a Second Tier Grandfathered Stockholder, the greater of 15% or such
percentage as is beneficially owned by each Amerindo Holder plus 1%, or more of
the then outstanding Common Shares (such date being herein referred to as the
"Distribution Date"), (x) the Rights will be evidenced (subject to the
provisions of Section 3(b) hereof) by the certificates for Common Shares
registered in the names of the holders thereof (which certificates shall also be
deemed to be Right Certificates) and not by separate Right Certificates, and (y)
the right to receive Right Certificates will be transferable only in connection
with the transfer of Common Shares. As soon as practicable after the
Distribution Date, the Company will prepare and execute, the Rights Agent will
countersign, and the Company will send or cause to be sent (and the Rights Agent
will, if requested, send) by first-class, insured, postage-prepaid mail, to each
record holder of Common Shares as of the Close of Business on the Distribution
Date, at the address of such holder shown on the records of the Company, a Right
Certificate evidencing one Right for each Common Share so held (and, 



                                      -6-
<PAGE>   10

subject to the terms hereof, one such Right Certificate will also be issued with
each Common Share issued after the Close of Business on the Distribution Date
and prior to the earlier of the Redemption Date and the Close of Business on the
Final Expiration Date upon conversion of any Notes). 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 the Summary of Rights by
first-class, postage-prepaid mail, to each record holder of Common Shares as of
the Close of Business on the Record Date, at the address of such holder shown on
the records of the Company. With respect to certificates for Common Shares
outstanding as of the Record Date, until the Close of Business on the
Distribution Date, the Rights will be evidenced by such certificates registered
in the names of the holders thereof together with a copy of the Summary of
Rights attached thereto. Until the Close of Business on the Distribution Date
(or the earlier of the Redemption Date or the Close of Business on the Final
Expiration Date), the surrender for transfer of any certificate for Common
Shares outstanding on the Record Date, with or without a copy of the Summary of
Rights attached thereto, shall also constitute the transfer of the Rights
associated with the Common Shares evidenced thereby.

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

             This certificate also evidences and entitles the holder hereof to
             certain Rights as set forth in a Rights Agreement between Arbor
             Software Corporation and BankBoston, N.A., as Rights Agent, dated
             as of June 15, 1998 (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 Arbor Software
             Corporation. Under certain circumstances, as set forth in the
             Rights Agreement, such Rights will be evidenced by separate
             certificates and will no longer be evidenced by this certificate.
             Arbor Software Corporation will mail to the holder of this
             certificate a copy of the Rights Agreement without charge after
             receipt of a written request therefor. Under certain circumstances,
             Rights that are or were acquired or beneficially owned by Acquiring
             Persons (as defined in the Rights Agreement) may become null and
             void.



                                      -7-
<PAGE>   11
With respect to such certificates containing the foregoing legend, until the
Close of Business on the Distribution Date, the Rights associated with the
Common Shares represented by certificates shall be evidenced by such
certificates alone, and the surrender for transfer of any such certificate shall
also constitute the transfer of the Rights associated with the Common Shares
represented thereby. In the event that the Company purchases or acquires any
Common Shares after the Record Date but prior to the Close of Business on the
Distribution Date, any Rights associated with such Common Shares shall be deemed
canceled and retired so that the Company shall not be entitled to exercise any
Rights associated with the Common Shares which are no longer outstanding.

             Section 4. Form of Right Certificates. The Right Certificates (and
the forms of election to purchase Preferred Shares and of assignment to be
printed on the reverse thereof) shall be substantially the same as Exhibit B
hereto and may have such marks of identification or designation and such
legends, summaries or endorsements printed thereon as the Company may deem
appropriate and as are not inconsistent with the provisions of this Agreement,
or as may be required to comply with any applicable law or with any rule or
regulation made pursuant thereto or with any rule or regulation of any stock
exchange on which the Rights may from time to time be listed, or to conform to
usage. Subject to the other provisions of this Agreement, the Right Certificates
shall entitle the holders thereof to purchase such number of one one-thousandths
of a Preferred Share as shall be set forth therein at the Purchase Price, but
the number of one one-thousandths of a Preferred Share and the Purchase Price
shall be subject to adjustment as provided herein.

             Section 5. Countersignature and Registration. The Right
Certificates shall be executed on behalf of the Company by its Chairman of the
Board, its Chief Executive Officer, its President, any of its Vice Presidents,
or its Treasurer, either manually or by facsimile signature, shall have affixed
thereto the Company's seal or a facsimile thereof, and shall be attested by the
Secretary or any Assistant Secretary of the Company, either manually or by
facsimile signature. The Right Certificates shall be countersigned by the Rights
Agent and shall not be valid for any purpose unless so countersigned, either
manually or by facsimile. In case any officer of the Company who shall have
signed any of the Right Certificates shall cease to be such officer of the



                                      -8-
<PAGE>   12
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 Rights
Agreement any such person was not such an officer.

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

             Section 6. Transfer, Split Up, Combination and Exchange of Right
Certificates; Mutilated, Destroyed, Lost or Stolen Right Certificates. Subject
to the provisions of Section 14 hereof, at any time after the Close of Business
on the Distribution Date, and prior to the earlier of the Redemption Date or the
Close of Business on the Final Expiration Date, any Right Certificate or Right
Certificates (other than Right Certificates representing Rights that have become
void pursuant to Section 11(a)(ii) hereof or that have been exchanged pursuant
to Section 24 hereof) 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 Preferred Share as the
Right Certificate or Right Certificates surrendered then entitled such holder to
purchase. Any registered holder desiring to transfer, split up, combine or
exchange any Right Certificate or Right Certificates shall make such request in
writing delivered to the Rights Agent, and shall surrender the Right Certificate
or Right Certificates to be transferred, split up, combined or exchanged at the
principal office of the Rights Agent. 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 for any tax or 



                                      -9-
<PAGE>   13
governmental charge that may be imposed in connection with any transfer, split
up, combination or exchange of Right Certificates.

             Upon receipt by the Company and the Rights Agent of evidence
reasonably satisfactory to them of the loss, theft, destruction or mutilation of
a Right Certificate, and, in case of loss, theft or destruction, of indemnity or
security reasonably satisfactory to them, and, at the Company's request,
reimbursement to the Company and the Rights Agent of all reasonable expenses
incidental thereto, and upon surrender to the Rights Agent and cancellation of
the Right Certificate if mutilated, the Company will 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) The registered holder of any Right Certificate (other
than a holder whose Rights have become void pursuant to Section 11(a)(ii) hereof
or have been exchanged pursuant to Section 24 hereof) may exercise the Rights
evidenced thereby in whole or in part at any time after the Distribution Date
upon surrender of the Right Certificate, with the form of election to purchase
on the reverse side thereof duly executed, to the Rights Agent at its principal
office, together with payment of the Purchase Price for each one one-thousandth
of a Preferred Share as to which the Rights are exercised, prior to the earliest
of (i) the Close of Business on the Final Expiration Date, (ii) the time at
which the right to exercise the Rights terminates pursuant to Section 23 hereof,
or (iii) the time at which the right to exercise the Rights terminates pursuant
to Section 24 hereof.

                     (b) The purchase price for each one one-thousandth of a
Preferred Share to be purchased upon the exercise of a Right shall initially be
two hundred fifty Dollars ($250) (the "Purchase Price"), shall be subject to
adjustment from time to time as provided in Sections 11 and 13 hereof and shall
be payable in lawful money of the United States of America in accordance with
paragraph (c) below.

                     (c) Upon receipt of a Right Certificate representing
exercisable Rights, with the form of election to purchase and certificate duly
executed, accompanied by 



                                      -10-
<PAGE>   14
payment of the Purchase Price for the number of one one-thousandths of a
Preferred Share to be purchased and an amount equal to any applicable transfer
tax required to be paid by the holder of such Right Certificate in accordance
with Section 9 hereof by cash, 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 Shares certificates
for the number of one one-thousandths of a Preferred Share to be purchased and
the Company hereby irrevocably authorizes its transfer agent to comply with all
such requests, or (B) requisition from any depositary agent for the Preferred
Shares depositary receipts representing such number of one one-thousandths of a
Preferred Share as are to be purchased (in which case certificates for the
Preferred Shares represented by such receipts shall be deposited by the transfer
agent with the depositary agent) and the Company hereby directs the depositary
agent to comply with such request, (ii) when appropriate, requisition from the
Company the amount of cash to be paid in lieu of issuance of fractional
Preferred Shares in accordance with Section 14 hereof, (iii) after receipt of
such certificates or depositary receipts, cause the same to be delivered to or
upon the order of the registered holder of such Right Certificate, registered in
such name or names as may be designated by such holder and (iv) when
appropriate, after receipt, deliver such cash to or upon the order of the
registered holder of such Right Certificate.

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

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



                                      -11-
<PAGE>   15

former Beneficial Owner) or Affiliates or Associates thereof as the Company
shall reasonably request.

             Section 8. Cancellation and Destruction of Right Certificates. All
Right Certificates surrendered for the purpose of exercise, transfer, split up,
combination or exchange shall, if surrendered to the Company or to any of its
agents, be delivered to the Rights Agent for cancellation or in canceled form,
or, if 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 Rights 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. Status and Availability of Preferred Shares.

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

                     (b) The Company further covenants and agrees that it will
pay when due and payable any and all federal and state transfer taxes and
charges which may be payable in respect of the issuance or delivery of the Right
Certificates or of any Preferred Shares upon the exercise of Rights. The Company
shall not, however, be required to pay any transfer tax which may be payable in
respect of any transfer or delivery of Right Certificates to a person other
than, or the issuance or delivery of certificates or depositary receipts for the
Preferred Shares in a name other than that of, the registered holder of the
Right Certificate evidencing Rights surrendered for exercise or to issue or to
deliver any certificates or depositary receipts for Preferred Shares upon the
exercise of any Rights until any such tax shall have been paid (any such tax
being payable by the holder of 



                                      -12-
<PAGE>   16

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.

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

             Section 10. Preferred Shares Record Date. Each person in whose name
any certificate for Preferred Shares is issued upon the exercise of Rights shall
for all purposes be deemed to have become the holder of record of the Preferred
Shares 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.
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 Shares
for which the Rights shall be exercisable, including, without limitation, the
right to vote, to receive dividends or other distributions or to exercise any
preemptive rights, and shall not be entitled to receive any notice of any
proceedings of the Company, except as provided herein.

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

                     (a)(i) In the event the Company shall at any time after the
date of this Agreement (A) declare a dividend on the Preferred Shares payable in
Preferred Shares, (B) subdivide the outstanding Preferred Shares, (C) combine
the outstanding Preferred Shares into a smaller number of Preferred Shares or
(D) issue any shares of its capital stock in a reclassification of the Preferred
Shares (including any such reclassification in connection with a consolidation
or merger in which the Company is the continuing or surviving 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



                                      -13-
<PAGE>   17

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, he 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 the following paragraph of this
subparagraph (ii) and to Section 24 of this Agreement, in the event any Person
shall become an Acquiring Person, each holder of a Right shall thereafter have a
right to receive, upon exercise thereof at a price equal to the then current
Purchase Price multiplied by the number of one one-thousandths of a Preferred
Share for which a Right is then exercisable, in accordance with the terms of
this Agreement and in lieu of Preferred Shares, such number of Common Shares of
the Company as shall equal the result obtained by (x) multiplying the then
current Purchase Price by the number of one one-thousandths of a Preferred Share
for which a Right is then exercisable and dividing that product by (y) 50% of
the then current per share market price of the Company's Common Shares
(determined pursuant to Section 11(d) hereof) on the date such Person became an
Acquiring Person. In the event that any Person shall become an Acquiring Person
and the Rights shall then be outstanding, the Company shall not take any action
that would eliminate or diminish the benefits intended to be afforded by the
Rights.

               From and after the occurrence of such an event, any Rights that
are or were acquired or beneficially owned by such Acquiring Person (or any
Associate or Affiliate of such Acquiring Person) on or after the earlier of (x)
the date of such event and (y) the Distribution Date shall be void and any
holder of such Rights shall thereafter have no right to exercise such Rights
under any provision of this Agreement. No Right Certificate shall be issued
pursuant to Section 3 that represents Rights beneficially owned by an Acquiring
Person whose Rights would be void pursuant to the preceding sentence or any
Associate or Affiliate thereof; no Right Certificate shall be issued at any time
upon the transfer of any Rights to an Acquiring Person whose Rights would be
void pursuant to the preceding sentence or any Associate or Affiliate thereof or
to any nominee of such 



                                      -14-
<PAGE>   18

Acquiring Person, Associate or Affiliate; and any Right Certificate delivered to
the Rights Agent for transfer to an Acquiring Person whose Rights would be void
pursuant to the preceding sentence or any Associate or Affiliate thereof shall
be canceled.

                     (iii) In the event that the number of Common Shares which
are authorized by the Company's certificate of incorporation and not outstanding
or subscribed for, or reserved or otherwise committed for issuance for purposes
other than upon exercise of the Rights, are not sufficient to permit the holder
of each Right to purchase the number of Common Shares to which he would be
entitled upon the exercise in full of the Rights in accordance with the
foregoing subparagraph (ii) of paragraph (a) of this Section 11, or should the
Board of Directors so elect, the Company shall: (A) determine the excess of (1)
the value of the Common Shares issuable upon the exercise of a Right (calculated
as provided in the last sentence of this subparagraph (iii)) pursuant to Section
11(a)(ii) hereof (the "Current Value") over (2) the Purchase Price (such excess,
the "Spread"), and (B) with respect to each Right, make adequate provision to
substitute for such Common Shares, upon payment of the applicable Purchase
Price, any one or more of the following having an aggregate value determined by
the Board of Directors to be equal to the Current Value: (1) cash, (2) a
reduction in the Purchase Price, (3) Common Shares or other equity securities of
the Company (including, without limitation, shares, or units of shares, of
preferred stock which the Board of Directors of the Company has determined to
have the same value as shares of Common Stock (such shares of preferred stock,
"common stock equivalents")), (4) debt securities of the Company, or (5) other
assets; provided, however, if the Company shall not have made adequate provision
to deliver value pursuant to clause (B) above within thirty (30) days following
the first occurrence of an event triggering the rights to purchase Common Shares
described in Section 11(a)(ii) (the "Section 11(a)(ii) Trigger Date"), then the
Company shall be obligated to deliver, upon the surrender for exercise of a
Right and without requiring payment of the Purchase Price, shares of Common
Stock (to the extent available) and then, if necessary, cash, which shares and
cash have an aggregate value equal to the Spread. If the Board of Directors of
the Company shall determine in good faith that it is likely that sufficient
additional Common Shares could be authorized for issuance upon exercise in full
of the Rights, the thirty (30) day period set forth above may be extended to the



                                      -15-
<PAGE>   19

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 period, as it may be extended, the
"Substitution Period"). To the extent that the Company determines that some
action need be taken pursuant to the first and/or second sentences of this
Section 11(a)(iii), the Company (x) shall provide, subject to Section 7(e)
hereof and the last paragraph of Section 11(a)(ii) 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 first sentence and
to determine the value thereof. In the event of any such suspension, the Company
shall make a public announcement, and shall deliver to the Rights Agent a
statement, stating that the exercisability of the Rights has been temporarily
suspended. At such time as the suspension is no longer in effect, the Company
shall make another public announcement, and deliver to the Rights Agent a
statement, so stating. For purposes of this Section 11(a)(iii), the value of the
Common Shares shall be the current per share market price (as determined
pursuant to Section 11(d)(i) hereof) of the Common Shares on the Section
11(a)(ii) Trigger Date and the value of any common stock equivalent shall be
deemed to have the same value as the Common Shares on such date.

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



                                      -16-
<PAGE>   20
which the aggregate offering price of the total number of Preferred Shares
and/or equivalent preferred shares so to be offered (and/or the aggregate
initial conversion price of the convertible securities so to be offered) would
purchase at such current market price and the denominator of which shall be the
number of Preferred Shares outstanding on such record date plus the number of
additional Preferred Shares and/or equivalent preferred shares to be offered for
subscription or purchase (or into which the convertible securities so to be
offered are initially convertible); provided, however, that in no event shall
the consideration to be paid upon the exercise of one Right be less than the
aggregate par value of the shares of capital stock of the Company issuable upon
exercise of one Right. In case such subscription price may be paid in a
consideration part or all of which shall be in a form other than cash, the value
of such consideration shall be as determined in good faith by the Board of
Directors of the Company, whose determination shall be described in a statement
filed with the Rights Agent. Preferred Shares owned by or held for the account
of the Company shall not be deemed outstanding for the purpose of any such
computation. Such adjustment shall be made successively whenever such a record
date is fixed; and in the event that such rights, options or warrants are not so
issued, the Purchase Price shall be adjusted to be the Purchase Price which
would then be in effect if such record date had not been fixed.

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



                                      -17-
<PAGE>   21

per share market price of the Preferred Shares; provided, however, that in no
event shall the consideration to be paid upon the exercise of one Right be less
than the aggregate par value of the shares of capital stock of the Company to be
issued upon exercise of one Right. Such adjustments shall be made successively
whenever such a record date is fixed; and in the event that such distribution is
not so made, the Purchase Price shall again be adjusted to be the Purchase Price
which would then be in effect if such record date had not been fixed.

                     (d)(i) For the purpose of any computation hereunder, the
"current per share market price" of any security (a "Security" for the purpose
of this Section 11(d)(i)) on any date shall be deemed to be the average of the
daily closing prices per share of such Security for the 30 consecutive Trading
Days (as such term is hereinafter defined) immediately prior to such date;
provided, however, that in the event that the current per share market price of
the Security is determined during a period following the announcement by the
issuer of such Security of (A) a dividend or distribution on such Security
payable in shares of such Security or securities convertible into such shares,
or (B) any subdivision, combination or reclassification of such Security and
prior to the expiration of 30 Trading Days after the ex-dividend date for such
dividend or distribution, or the record date for such subdivision, combination
or reclassification, then, and in each such case, the current per share market
price shall be appropriately adjusted to reflect the current market price per
share equivalent of such Security. The closing price for each day shall be the
last sale price, regular way, or, in case no such sale takes place on such day,
the average of the closing bid and asked prices, regular way, in either case as
reported in the principal consolidated transaction reporting system with respect
to securities listed or admitted to trading on the New York Stock Exchange or,
if the Security is not listed or admitted to trading on the New York Stock
Exchange, as reported in the principal consolidated transaction reporting system
with respect to securities listed on the principal national securities exchange
on which the Security is listed or admitted to trading or, 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 the National Association
of Securities Dealers, Inc. Automated Quotations System ("NASDAQ") or such other
system then in use, or, if on any such date the Security is not quoted by 



                                      -18-
<PAGE>   22
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, the
"current per share market price" of the Preferred Shares shall be determined in
accordance with the method set forth in Section 11(d)(i). If the Preferred
Shares are not publicly traded, the "current per share market price" of the
Preferred Shares shall be conclusively deemed to be the current per share market
price of the Common Shares as determined pursuant to Section 11(d)(i)
(appropriately adjusted to reflect any stock split, stock dividend or similar
transaction occurring after the date hereof), multiplied by 1000. If neither the
Common Shares nor the Preferred Shares are publicly held or so listed or traded,
"current per share market price" shall mean the fair value per share as
determined in good faith by the Board of Directors of the Company, whose
determination shall be described in a statement filed with the Rights Agent.

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

                     (f) If as a result of an adjustment made pursuant to
Section 11(a) hereof, the holder of any Right thereafter exercised shall become
entitled to receive any shares of capital stock of the Company other than
Preferred Shares, the number of such other shares so receivable upon exercise of
any Right shall thereafter be subject to adjustment from time to time in a
manner 



                                      -19-
<PAGE>   23

and on terms as nearly equivalent as practicable to the provisions with respect
to the Preferred Shares contained in Section 11(a) through (c), inclusive, and
the provisions of Sections 7, 9, 10 and 13 with respect to the Preferred Shares
shall apply on like terms to any such other shares.

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

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

                     (i) The Company may elect on or after the date of any
adjustment of the Purchase Price to adjust the number of Rights in substitution
for any adjustment in the number of one one-thousandths of a Preferred Share
purchasable upon the exercise of a Right. Each of the Rights outstanding after
such adjustment of the number of Rights shall be exercisable for the number of
one one-thousandths of a Preferred Share for which a Right was exercisable
immediately prior to such adjustment. Each Right held of record prior to such
adjustment of the number of Rights shall become that number of Rights
(calculated to the nearest one hundred-thousandth) obtained by dividing the
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 



                                      -20-
<PAGE>   24

adjustment to be made. This record date may be the date on which the Purchase
Price is adjusted or any day thereafter, but, if the Right Certificates have
been distributed, shall be at least 10 days later than the date of the public
announcement. If Right Certificates have been distributed, upon each adjustment
of the number of Rights pursuant to this Section 11(i), the Company shall, as
promptly as practicable, cause to be distributed to holders of record of Right
Certificates on such record date Right Certificates evidencing, subject to
Section 14 hereof, the additional Rights to which such holders shall be entitled
as a result of such adjustment, or, at the option of the Company, shall cause to
be distributed to such holders of record in substitution and replacement for the
Right Certificates held by such holders prior to the date of adjustment, and
upon surrender thereof, if required by the Company, new Right Certificates
evidencing all the Rights to which such holders shall be entitled after such
adjustment. Right Certificates to be so 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 Preferred Share
issuable upon the exercise of the Rights, the Right Certificates theretofore and
thereafter issued may continue to express the Purchase Price and the number of
one one-thousandths of a Preferred Share 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 one one-thousandth of the then par value of
the Preferred Shares issuable upon exercise of the Rights, the Company shall
take any corporate action which may, in the opinion of its counsel, be necessary
in order that the Company may validly and legally issue fully paid and
non-assessable Preferred Shares at such adjusted Purchase Price.

                     (l) In any case in which this Section 11 shall require that
an adjustment in the Purchase Price be made effective as of a record date for a
specified event, the Company may elect to defer until the occurrence of such
event the issuing to the holder of any Right exercised after such record date of
the Preferred Shares and other capital stock or securities 



                                      -21-
<PAGE>   25

of the Company, if any, issuable upon such exercise over and above the Preferred
Shares and other capital stock or securities of the Company, if any, issuable
upon such exercise on the basis of the Purchase Price in effect prior to such
adjustment; provided, however, that the Company shall deliver to such holder a
due bill or other appropriate instrument evidencing such holder's right to
receive such additional shares upon the occurrence of the event requiring such
adjustment.

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

                     (n) In the event that at any time after the date of this
Agreement and prior to the Distribution Date, the Company shall (i) declare or
pay any dividend on the Common Shares payable in Common Shares or (ii) effect a
subdivision, combination or consolidation of the Common Shares (by
reclassification or otherwise other than by payment of dividends in Common
Shares) into a greater or lesser number of Common Shares, then in any such case
(i) the number of one one-thousandths of a Preferred Share purchasable after
such event upon proper exercise of each Right shall be determined by multiplying
the number of one one-thousandths of a Preferred Share so purchasable
immediately prior to such event by a fraction, the numerator of which is the
number of Common Shares outstanding immediately before such event and the
denominator of which is the number of Common Shares outstanding immediately
after such event, and (ii) each Common Share outstanding immediately after such
event shall have issued with respect to it that number of Rights which each
Common Share outstanding immediately prior to such event had issued with respect
to it. The adjustments provided for in this Section 11(n) shall be made
successively whenever such a dividend is declared or paid or such a subdivision,
combination or consolidation is effected.



                                      -22-
<PAGE>   26

               Section 12. Certificate of Adjustment. Whenever an adjustment is
made as provided in Sections 11 and 13 hereof, the Company shall promptly (a)
prepare a certificate setting forth such adjustment, and a brief statement of
the facts accounting for such adjustment, (b) file with the Rights Agent and
with each transfer agent for the Common Shares or the Preferred Shares a copy of
such certificate and (c) mail a brief summary thereof to each holder of a Right
Certificate in accordance with Section 25 hereof. The Rights Agent shall be
fully protected in relying on any such certificate and on any adjustment therein
contained.

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

               In the event that, at any time after a Person becomes an
Acquiring Person, directly or indirectly, (i) the Company shall consolidate
with, or merge with and into, any other Person, (ii) any Person shall
consolidate with the Company, or merge with and into the Company and the Company
shall be the continuing or surviving corporation of such merger and, in
connection with such merger, all or part of the Common Shares shall be changed
into or exchanged for stock or other securities of any other Person (or the
Company) or 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 of
its wholly-owned Subsidiaries, then, and in each such case, proper provision
shall be made so that (A) each holder of a Right (except as otherwise provided
herein) shall thereafter have the right to receive, upon the exercise thereof at
a price equal to the then current Purchase Price multiplied by the number of one
one-thousandths of a Preferred Share for which a Right is then exercisable, in
accordance with the terms of this Agreement and in lieu of Preferred Shares,
such number of Common Shares of such other Person (including the Company as
successor thereto or as the surviving corporation) as shall equal the result
obtained by (x) multiplying the then current Purchase Price by the number of one
one-thousandths of a Preferred Share for which a Right is then exercisable and
dividing that product by (y) 50% of the then current per share market price of
the Common Shares of such other Person (determined pursuant to Section 




                                      -23-
<PAGE>   27

11(d) hereof) on the date of consummation of such consolidation, merger, sale or
transfer; (B) the issuer of such Common Shares shall thereafter be liable for,
and shall assume, by virtue of such consolidation, merger, sale or transfer, all
the obligations and duties of the Company pursuant to this Agreement; (C) the
term "Company" shall thereafter be deemed to refer to such issuer; and (D) such
issuer shall take such steps (including, but not limited to, the reservation of
a sufficient number of its Common Shares in accordance with Section 9 hereof) in
connection with such consummation as may be necessary to assure that the
provisions hereof shall thereafter be applicable, as nearly as reasonably may
be, in relation to the Common Shares thereafter deliverable upon the exercise of
the Rights. The Company covenants and agrees that it shall not consummate any
such consolidation, merger, sale or transfer unless prior thereto the Company
and such issuer shall have executed and delivered to the Rights Agent a
supplemental agreement so providing. The Company shall not enter into any
transaction of the kind referred to in this Section 13 if at the time of such
transaction there are any rights, warrants, instruments or securities
outstanding or any agreements or arrangements which, as a result of the
consummation of such transaction, would eliminate or substantially diminish the
benefits intended to be afforded by the Rights. The provisions of this Section
13 shall similarly apply to successive mergers or consolidations or sales or
other transfers. For purposes hereof, the "earning power" of the Company and its
Subsidiaries shall be determined in good faith by the Company's Board of
Directors on the basis of the operating earnings of each business operated by
the Company and its Subsidiaries during the three fiscal years preceding the
date of such determination (or, in the case of any business not operated by the
Company or any Subsidiary during three full fiscal years preceding such date,
during the period such business was operated by the Company or any Subsidiary).

               Section 14.   Fractional Rights and Fractional Shares.

                     (a) The Company shall not be required to issue fractions of
Rights or to distribute Right Certificates which evidence fractional Rights. In
lieu of such fractional Rights, there shall be paid to the registered holders of
the Right Certificates with regard to which such fractional Rights would
otherwise be issuable, an amount in cash equal to the same fraction of the
current market value of a whole Right. For the purposes of this Section 14(a),
the current market 



                                      -24-
<PAGE>   28

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 Shares (other than fractions which are integral multiples of one
one-thousandth of a Preferred Share) upon exercise of the Rights or to
distribute certificates which evidence fractional Preferred Shares (other than
fractions which are integral multiples of one one-thousandth of a Preferred
Share). Fractions of Preferred Shares in integral multiples of one
one-thousandth of a Preferred Share may, at the election of the Company, be
evidenced by depositary receipts, pursuant to an appropriate agreement between
the Company and a depositary selected by it; provided, that such agreement shall
provide that the holders of such depositary receipts shall have all the rights,
privileges and preferences to which they are entitled as beneficial owners of
the Preferred Shares represented by such depositary receipts. In lieu of
fractional Preferred Shares that are not integral multiples of one
one-thousandth of a Preferred Share, the Company shall pay to each registered
holder of Right Certificates at the time such Rights are exercised as herein
provided an amount in 



                                      -25-
<PAGE>   29

cash equal to the same fraction of the current market value of one Preferred
Share as the fraction of one Preferred Share that such holder would otherwise
receive upon the exercise of the aggregate number of rights exercised by such
holder. For the purposes of this Section 14(b), the current market value of a
Preferred Share shall be the closing price of a Preferred Share (as determined
pursuant to the second sentence of Section 11(d)(i) hereof) for the Trading Day
immediately prior to the date of such exercise.

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

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

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

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



                                      -26-
<PAGE>   30

                     (b) after the Distribution Date, the Right Certificates are
transferable only on the registry books maintained by the Rights Agent if
surrendered at the principal office of the Rights Agent, duly endorsed or
accompanied by a proper instrument of transfer with a completed form of
certification; and

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

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

               Section 18. Concerning the Rights Agent. The Company agrees to
pay to the Rights Agent reasonable compensation for all services rendered by it
hereunder and, from time to time, on demand of the Rights Agent, its reasonable
expenses and counsel fees and other disbursements incurred in the administration
and execution of this Agreement and the exercise and performance of its duties
hereunder. The Company also agrees to indemnify the Rights Agent for, and to
hold it harmless against, any loss, liability, or expense, incurred without
gross negligence, 



                                      -27-
<PAGE>   31
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 or liability in connection therewith.

               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 Preferred Shares or Common Shares or for other securities of
the Company, instrument of assignment or transfer, power of attorney,
endorsement, affidavit, letter, notice, direction, consent, certificate,
statement, or other paper or document believed by it to be genuine and to be
signed, executed and, where necessary, verified or acknowledged, by the proper
person or persons.

               Section 19. Merger or Consolidation or Change of Name of Rights
Agent. Any corporation into which the Rights Agent or any successor Rights Agent
may be merged or with which it may be consolidated, or any corporation resulting
from any merger or consolidation to which the Rights Agent or any successor
Rights Agent shall be a party, or any corporation succeeding to the corporate
trust business of the Rights Agent or any successor Rights Agent, shall be the
successor to the Rights Agent under this Agreement without the execution or
filing of any paper or any further act on the part of any of the parties hereto,
provided that such corporation would be eligible for appointment as a successor
Rights Agent under the provisions of Section 21 hereof. In case at the time such
successor Rights Agent shall succeed to the agency created by this Agreement,
any of the Right Certificates shall have been countersigned but not delivered,
any such successor Rights Agent may adopt the countersignature of the
predecessor Rights Agent and deliver such Right Certificates so countersigned;
and in case at that time any of the Right Certificates shall not have been
countersigned, any successor Rights Agent may countersign such Right
Certificates either in the name of the predecessor Rights Agent or in the name
of the successor Rights Agent; and in all such cases such Right Certificates
shall have the full force provided in the Right Certificates and in this
Agreement.

               In case at any time the name of the Rights Agent shall be changed
and at such time any of the Right Certificates shall have been countersigned but
not delivered, the Rights Agent may 



                                      -28-
<PAGE>   32

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 expressly set forth in this Agreement and no implied
duties or obligations shall be read into this Agreement against the Rights
Agent. The Rights Agent shall perform those duties and obligations 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 any one of the Chairman of the Board, the
President, a Vice President, the Treasurer or the Secretary of the Company and
delivered to the Rights Agent; and such certificate shall be full authorization
to the Rights Agent for any action taken or suffered in good faith by it under
the provisions of this Agreement in reliance upon such certificate.

                     (c) The Rights Agent shall be liable hereunder 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 as to its 



                                      -29-
<PAGE>   33
countersignature thereof) or be required to verify the same, but all such
statements and recitals are and shall be deemed to have been made by the Company
only.

                     (e) The Rights Agent shall not be under any responsibility
in respect of the validity of this Agreement or the execution and delivery
hereof (except the due execution hereof by the Rights Agent) or in respect of
the validity or execution of any 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 adjustment required under the provisions of
Sections 11 or 13 hereof or responsible for the manner, method or amount of any
such adjustment or the ascertaining of the existence of facts that would require
any such adjustment (except with respect to the exercise of Rights evidenced by
Right Certificates after actual notice of any such adjustment); nor shall it by
any act hereunder be deemed to make any representation or warranty as to the
authorization or reservation of any Preferred Shares to be issued pursuant to
this Agreement or any Right Certificate or as to whether any Preferred Shares
will, when so issued, be validly authorized and issued, fully paid and
nonassessable.

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

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

                     (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 



                                      -30-
<PAGE>   34
contract with or lend money to the Company or otherwise act as fully and freely
as though it were not Rights Agent under this Agreement. Nothing herein shall
preclude the Rights Agent from acting in any other capacity for the Company or
for any other legal entity.

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

               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 Shares and the Preferred Shares by registered or
certified mail, and to the holders of the Right Certificates by first-class
mail. The Company may remove the Rights Agent or any successor Rights Agent upon
30 days' notice in writing, mailed to the Rights Agent or successor Rights
Agent, as the case may be, and to each transfer agent of the Common Shares and
the Preferred Shares by registered or certified mail, and to the holders of the
Right Certificates by first-class mail. If the Rights Agent shall resign or be
removed or shall otherwise become incapable of acting, the Company shall appoint
a successor to the Rights Agent. If the 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 of any state of the United States, in good standing, having an office
in the State of California which is authorized under such laws to exercise
corporate trust powers and is subject to supervision or examination by federal
or state authority and which has at the time of its 



                                      -31-
<PAGE>   35

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

               Section 22. Issuance of New Right Certificates. Notwithstanding
any of the provisions of this Agreement or of the Rights to the contrary, the
Company may, at its option, issue new Right Certificates evidencing Rights in
such form as may be approved by its Board of Directors to reflect any adjustment
or change in the Purchase Price and the number or kind or class of shares or
other securities or property purchasable under the Right Certificates made in
accordance with the provisions of this Agreement.

               Section 23. Redemption.

                     (a) The Board of Directors of the Company may, at its
option, at any time prior to such time as any Person becomes an Acquiring
Person, redeem all but not less than all the then outstanding Rights at a
redemption price of $0.01 per Right, appropriately adjusted to reflect any stock
split, stock dividend or similar transaction occurring after the date hereof
(such redemption price being hereinafter referred to as the "Redemption Price").
The redemption of the Rights by the Board of Directors may be made effective at
such time, on such basis and subject to such conditions as the Board of
Directors in its sole discretion may establish.

                     (b) Immediately upon the time of the effectiveness of the
redemption of the Rights pursuant to paragraph (a) of this Section 23 or such
earlier time as may be determined by the Board of Directors of the Company in
the action ordering such redemption (although not earlier 



                                      -32-
<PAGE>   36

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

               Section 24.   Exchange.

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



                                      -33-
<PAGE>   37
Associates of such Person, becomes the Beneficial Owner of a majority of the
Common Shares then outstanding.

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

                     (c) In any exchange pursuant to this Section 24, the
Company, at its option, may substitute Preferred Shares or common stock
equivalents for Common Shares exchangeable for Rights, at the initial rate of
one one-thousandth of a Preferred Share (or an appropriate number of common
stock equivalents) for each Common Share, as appropriately adjusted to reflect
adjustments in the voting rights of the Preferred Shares pursuant to the terms
thereof, so that the fraction of a Preferred Share delivered in lieu of each
Common Share shall have the same voting rights as one Common Share.

                     (d) In the event that there shall not be sufficient Common
Shares, Preferred Shares or common stock equivalents authorized by the Company's
certificate of incorporation and not outstanding or subscribed for, or reserved
or otherwise committed for issuance for purposes other than upon exercise of
Rights, to permit any exchange of Rights as contemplated in 



                                      -34-
<PAGE>   38
accordance with this Section 24, the Company shall take all such action as
may be necessary to authorize additional Common Shares, Preferred Shares or
common stock equivalents for issuance upon exchange of the Rights.

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

               Section 25.   Notice of Certain Events.

                     (a) In case the Company shall after the Distribution Date
propose (i) to pay any dividend payable in stock of any class to the holders of
its Preferred Shares or to make any other distribution to the holders of its
Preferred Shares (other than a regular quarterly cash dividend), (ii) to offer
to the holders of its Preferred Shares rights or warrants to subscribe for or to
purchase any additional Preferred Shares or shares of stock of any class or any
other securities, rights or options, (iii) to effect any reclassification of its
Preferred Shares (other than a reclassification involving only the subdivision
of outstanding Preferred Shares), (iv) to effect any consolidation or merger
into or with, or to effect any sale or other transfer (or to permit one or more
of its Subsidiaries to effect any sale or other transfer), in one or more
transactions, of 50% or more of the assets or earning power of the Company and
its Subsidiaries (taken as a whole) to, any other Person, (v) to effect the
liquidation, dissolution or winding up of the Company, or (vi) to declare or pay
any dividend on the Common Shares payable in Common Shares or to effect a
subdivision, combination or consolidation of the Common Shares (by
reclassification or otherwise than by payment of dividends in Common Shares),
then, in each such case, the Company shall give to each holder of a Right
Certificate, in accordance with Section 26 hereof, a notice of such proposed



                                      -35-
<PAGE>   39

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
reclassification, consolidation, merger, sale, transfer, liquidation,
dissolution, or winding up is to take place and the date of participation
therein by the holders of the Common Shares and/or Preferred Shares, if any such
date is to be fixed, and such notice shall be so given in the case of any action
covered by clause (i) or (ii) above at least 10 days prior to the record date
for determining holders of the Preferred Shares for purposes of such action, and
in the case of any such other action, at least 10 days prior to the date of the
taking of such proposed action or the date of participation therein by the
holders of the Common Shares and/or Preferred Shares, whichever shall be the
earlier.

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

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

                      Arbor Software Corporation
                      1325 Chesapeake Terrace
                      Sunnyvale, CA  94089

                      Attention:  Chief Financial Officer

                      Copy to:

                      Gunderson Dettmer Stough Villeneuve
                        Franklin & Hachigian L.L.P.

                      155 Constitution Drive
                      Menlo Park CA  94025


                                      -36-
<PAGE>   40

                      Attention:  Steven Spurlock

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:  Client Administration

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

               Section 27. Supplements and Amendments. The Company may from time
to time, and the Rights Agent shall, if the Company so directs, supplement or
amend this Agreement without the approval of any holders of Right Certificates
in order to cure any ambiguity, to correct or supplement any provision contained
herein which may be defective or inconsistent with any other provisions herein,
or to make any change to or delete any provision hereof or to adopt any other
provisions with respect to the Rights which the Company may deem necessary or
desirable; provided, however, that from and after such time as any Person
becomes an Acquiring Person, this Agreement shall not be amended or supplemented
in any manner which would adversely affect the interests of the holders of
Rights (other than an Acquiring Person and its Affiliates and Associates). Any
supplement or amendment authorized by this Section 27 will be evidenced by a
writing signed by the Company and the Rights Agent.

                                                                           
               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.


                                      -37-
<PAGE>   41
               Section 29. Benefits of this Agreement. Nothing in this Agreement
shall be construed to give to any person or entity other than the Company, the
Rights Agent and the registered holders of the Right Certificates (and, prior to
the Distribution Date, the Common Shares) any legal or equitable right, remedy
or claim under this Agreement; but this Agreement shall be for the sole and
exclusive benefit of the Company, the Rights Agent and the registered holders of
the Right Certificates (and, prior to the Distribution Date, the Common Shares).

               Section 30. 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 31. 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 32. 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 33. 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.

               Section 34. Administration. The Board of Directors of the Company
shall have the exclusive power and authority to administer and interpret the
provisions of this Agreement and to exercise all rights and powers specifically
granted to the Board of Directors or the Company or as may be necessary or
advisable in the administration of this Agreement. All such actions,
calculations, determinations and interpretations which are done or made by the
Board of Directors in good faith shall be final, conclusive and binding on the
Company, the Rights Agent, the holders of the Rights and all other parties and
shall not subject the Board of Directors to any liability to the holders of the
Rights.



                                      -38-
<PAGE>   42
               IN WITNESS WHEREOF, the parties hereto have caused this Rights
Agreement to be duly executed and their respective corporate seals to be
hereunder affixed and attested, all as of the day and year first above written.

Attest:                             ARBOR SOFTWARE CORPORATION

/s/ LARRY BRAVERMAN
- - ---------------------               By: /s/ STEPHEN V. IMBLER
                                        ----------------------------------------


Attest:                             BANKBOSTON, N.A.

/s/ TYLER HANES
- - ---------------------               By: /s/ KATHERINE ANDERSON
                                        ----------------------------------------


                                      -39-
<PAGE>   43
                                                                       Exhibit A


                                      FORM

                                       of

                           CERTIFICATE OF DESIGNATION

                                       of

                  SERIES A JUNIOR PARTICIPATING PREFERRED STOCK

                                       of

                           ARBOR SOFTWARE CORPORATION

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

                         (Pursuant to Section 151 of the

                        Delaware General Corporation Law)

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



               Arbor Software Corporation, a corporation organized and existing
under the General Corporation Law of the State of Delaware (hereinafter called
the "Corporation"), hereby certifies that the following resolution was adopted
by the Board of Directors of the Corporation as required by Section 151 of the
General Corporation Law at a meeting duly called and held on June 12, 1998:

               RESOLVED, that pursuant to the authority granted to and vested in
the Board of Directors of this Corporation (hereinafter called the "Board of
Directors" or the "Board") in accordance with the provisions of the Restated
Certificate of Incorporation of the Corporation (the "Restated Certificate of
Incorporation"), the Board of Directors hereby creates a series of Preferred
Stock, par value $0.001 per share (the "Preferred Stock"), of the Corporation
and hereby states the designation and number of shares, and fixes the relative
rights, preferences, and limitations thereof as follows:

               Section 1. Designation and Amount. The shares of this series
shall be designated as "Series A Junior Participating Preferred Stock" (the
"Series A Preferred Stock") and the number of shares constituting the Series A
Preferred Stock shall be 300,000. Such number of shares may be increased or
decreased by resolution of the Board of Directors; provided, that no decrease
shall reduce the number of shares of Series A Preferred Stock to a number less
than the number of shares then outstanding plus the number of shares reserved
for issuance upon the exercise of outstanding options, rights or warrants or
upon the conversion of any outstanding securities issued by the Corporation
convertible into Series A Preferred Stock.



                                      A-1
<PAGE>   44

               Section 2. Dividends and Distributions.

                      (A) Subject to the rights of the holders of any shares of
any series of Preferred Stock (or any other stock) ranking prior and superior to
the Series A Preferred Stock with respect to dividends, the holders of shares of
Series A Preferred Stock shall be entitled to receive, when, as and if declared
by the Board of Directors out of funds legally available for the purpose,
quarterly dividends payable in cash on the last day of 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 Preferred Stock, in an amount (if any) per share (rounded to the
nearest cent), subject to the provision for adjustment hereinafter set forth,
equal to 1000 times the aggregate per share amount of all cash dividends, and
1000 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, par value $0.001 per share (the "Common Stock"), of the
Corporation or a subdivision of the outstanding shares of Common Stock (by
reclassification or otherwise), declared on the Common Stock since the
immediately preceding Quarterly Dividend Payment Date or, with respect to the
first Quarterly Dividend Payment Date, since the first issuance of any share or
fraction of a share of Series A Preferred Stock. In the event the Corporation
shall at any time declare or pay any dividend on the Common Stock payable in
shares of Common Stock, or effect a subdivision or combination or consolidation
of the outstanding shares of Common Stock (by reclassification or otherwise than
by payment of a dividend in shares of Common Stock) into a greater or lesser
number of shares of Common Stock, then in each such case the amount to which
holders of shares of Series A Preferred Stock were entitled immediately prior to
such event under the preceding sentence shall be adjusted by multiplying such
amount by a fraction, the numerator of which is the number of shares of Common
Stock outstanding immediately after such event and the denominator of which is
the number of shares of Common Stock that were outstanding immediately prior to
such event.

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

                      (C) Dividends due pursuant to paragraph (A) of this
Section shall begin to accrue and be cumulative on outstanding shares of Series
A Preferred Stock from the Quarterly Dividend Payment Date next preceding the
date of issue of such shares, unless the date of issue of such shares is prior
to the record date for the first Quarterly Dividend Payment Date, in which case
dividends on such shares shall begin to accrue from the date of issue of such
shares, or unless the date of issue is a Quarterly Dividend Payment Date or is a
date after the record date for the determination of holders of shares of Series
A Preferred Stock entitled to receive a quarterly dividend and before such
Quarterly Dividend Payment Date, in either of which events such dividends shall
begin to accrue and be cumulative from such Quarterly Dividend Payment Date.
Accrued but unpaid dividends shall not bear interest. Dividends paid on the
shares of Series A 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 Preferred Stock entitled to receive payment of
a dividend or distribution 



                                      A-2
<PAGE>   45
declared thereon, which record date shall be not more than 60 days prior to the
date fixed for the payment thereof.

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

                      (A) Subject to the provision for adjustment hereinafter
set forth, each share of Series A Preferred Stock shall entitle the holder
thereof to 1000 votes on all matters submitted to a vote of the stockholders of
the Corporation. In the event the Corporation shall at any time declare or pay
any dividend on the Common Stock payable in shares of Common Stock, or effect a
subdivision or combination or consolidation of the outstanding shares of Common
Stock (by reclassification or otherwise than by payment of a dividend in shares
of Common Stock) into a greater or lesser number of shares of Common Stock, then
in each such case the number of votes per share to which holders of shares of
Series A Preferred Stock were entitled immediately prior to such event shall be
adjusted by multiplying such number by a fraction, the numerator of which is the
number of shares of Common Stock outstanding immediately after such event and
the denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event.

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

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

               Section 4. Certain Restrictions.

                      (A) Whenever quarterly dividends or other dividends or
distributions payable on the Series A 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 Preferred Stock
outstanding shall have been paid in full, the Corporation shall not:

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

                          (ii) declare or pay dividends, or make any other
distributions, on any shares of stock ranking on a parity (either as to
dividends or upon liquidation, dissolution or winding up) with the Series A
Preferred Stock, except dividends paid ratably on the Series A 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



                                      A-3
<PAGE>   46
                          (iii) redeem or purchase or otherwise acquire for
consideration shares of any stock ranking junior (either as to dividends or upon
liquidation, dissolution or winding up) to the Series A Preferred Stock,
provided that the Corporation may at any time redeem, purchase or otherwise
acquire shares of any such junior stock in exchange for shares of any stock of
the Corporation ranking junior (as to dividends and upon dissolution,
liquidation or winding up) to the Series A Preferred Stock.

                      (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.

               Section 5. Reacquired Shares. Any shares of Series A Preferred
Stock purchased or otherwise acquired by the Corporation in any manner
whatsoever shall be retired and canceled promptly after the acquisition thereof.
All such shares shall upon their cancellation become authorized but unissued
shares of Preferred Stock and may be reissued as part of a new series of
Preferred Stock subject to the conditions and restrictions on issuance set forth
herein or in the Restated Certificate of Incorporation, including any
Certificate of Designations creating a series of Preferred Stock or any similar
stock, or as otherwise required by law.

               Section 6. Liquidation, Dissolution or Winding Up. Upon any
liquidation, dissolution or winding up of the Corporation the holders of shares
of Series A Preferred Stock shall be entitled to receive an aggregate amount per
share, subject to the provision for adjustment hereinafter set forth, equal to
1000 times the aggregate amount to be distributed per share to holders of shares
of Common Stock plus an amount equal to any accrued and unpaid dividends. In the
event the Corporation shall at any time declare or pay any dividend on the
Common Stock payable in shares of Common Stock, or effect a subdivision or
combination or consolidation of the outstanding shares of Common Stock (by
reclassification or otherwise than by payment of a dividend in shares of Common
Stock) into a greater or lesser number of shares of Common Stock, then in each
such case the aggregate amount to which holders of shares of Series A Preferred
Stock were entitled immediately prior to such event under the preceding sentence
shall be adjusted by multiplying such amount by a fraction the numerator of
which is the number of shares of Common Stock outstanding immediately after such
event and the denominator of which is the number of shares of Common Stock that
were outstanding immediately prior to such event.

               Section 7. Consolidation, Merger, etc. In case the Corporation
shall enter into any consolidation, merger, combination or other transaction in
which the shares of Common Stock are exchanged for or changed into other stock
or securities, cash and/or any other property, then in any such case each share
of Series A Preferred Stock shall at the same time be similarly exchanged or
changed into an amount per share, subject to the provision for adjustment
hereinafter set forth, equal to 1000 times the aggregate amount of stock,
securities, cash and/or any other property (payable in kind), as the case may
be, into which or for which each share of Common Stock is changed or exchanged.
In the event the Corporation shall at any time declare or pay any dividend on
the Common Stock payable in shares of Common Stock, or effect a subdivision or
combination or consolidation of the outstanding shares of Common Stock (by
reclassification or otherwise than by payment of a dividend in shares of Common
Stock) into a greater or lesser number of shares of Common Stock, then in each
such case the amount set forth in the preceding sentence with respect to the
exchange or change of shares of Series A Preferred Stock shall be 



                                      A-4
<PAGE>   47
adjusted by multiplying such amount by a fraction, the numerator of which is the
number of shares of Common Stock outstanding immediately after such event and
the denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event.

               Section 8. Amendment. The Restated Certificate of Incorporation
shall not be amended in any manner, including in a merger or consolidation,
which would alter, change, or repeal the powers, preferences or special rights
of the Series A Preferred Stock so as to affect them adversely without the
affirmative vote of the holders of at least two-thirds of the outstanding shares
of Series A Preferred Stock, voting together as a single class.

               Section 9. Rank. The Series A Preferred Stock shall rank, with
respect to the payment of dividends and upon liquidation, dissolution and
winding up, junior to all series of Preferred Stock.


                                      A-5
<PAGE>   48
               IN WITNESS WHEREOF, this Certificate of Designation is executed
on behalf of the Corporation by its Senior Vice President and Chief Financial
Officer this 12th day of June, 1998.



                                       ARBOR SOFTWARE CORPORATION

                                       By: /s/ Stephen V. Imbler
                                           -------------------------------
                                             Name: Stephen V. Imbler
                                                  ------------------------
                                             Title: Senior Vice President
                                                    and Chief Financial Officer
                                                   -----------------------


                                      A-6
<PAGE>   49
                                                                       Exhibit B



                            Form of Right Certificate

Certificate No. R-                                                _______ Rights

        NOT EXERCISABLE AFTER ________ __, 2008 OR EARLIER IF REDEMPTION OR
        EXCHANGE OCCURS. THE RIGHTS ARE SUBJECT TO REDEMPTION AT $0.01 PER RIGHT
        AND TO EXCHANGE ON THE TERMS SET FORTH IN THE RIGHTS AGREEMENT. UNDER
        CERTAIN CIRCUMSTANCES, RIGHTS THAT ARE OR WERE ACQUIRED OR BENEFICIALLY
        OWNED BY AN ACQUIRING PERSON OR ANY ASSOCIATES OR AFFILIATES THEREOF (AS
        SUCH TERMS ARE DEFINED IN THE RIGHTS AGREEMENT) OR ANY SUBSEQUENT HOLDER
        OF SUCH RIGHTS MAY BECOME NULL AND VOID.

                                Right Certificate

                           ARBOR SOFTWARE CORPORATION

This certifies that _______________________, or registered assigns, is the
registered owner of the number of Rights set forth above, each of which entitles
the owner thereof, subject to the terms, provisions and conditions of the Rights
Agreement, dated as of June 15, 1998 (the "Rights Agreement"), between Arbor
Software Corporation, a Delaware corporation (the "Company"), and BankBoston,
N.A.(the "Rights Agent"), to purchase from the Company at any time after the
Distribution Date (as such term is defined in the Rights Agreement) and prior to
5:00 P.M., Boston, Massachusetts time, on July 3, 2008, at the principal office
of the Rights Agent, or at the office 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 $0.001 per share (the "Preferred
Shares"), of the Company, at a purchase price of $250 per one one-thousandth of
a Preferred Share (the "Purchase Price"), upon presentation and surrender of
this Right Certificate with the certification and the Form of Election to
Purchase duly executed. The number of Rights evidenced by this Right Certificate
(and the number of one one-thousandths of a Preferred Share which may be
purchased upon exercise hereof) set forth above, and the Purchase Price set
forth above, are the number and Purchase Price as of July 3, 1998, based on the
Preferred Shares as constituted at such date. As provided in the Rights
Agreement, the Purchase Price and the number of one one-thousandths of a
Preferred Share which may be purchased upon the exercise of the Rights evidenced
by this Right Certificate are subject to modification and adjustment upon the
happening of certain events.

               From and after the occurrence of an event described in Section
11(a)(ii) of the Rights Agreement, if the Rights evidenced by this Right
Certificate are or were at any time on or 



                                      B-1
<PAGE>   50

after the earlier of (x) the date of such event and (y) the Distribution Date
(as such term is defined in the Rights Agreement) acquired or beneficially owned
by an Acquiring Person or an Associate or Affiliate of an Acquiring Person (as
such terms are defined in the Rights Agreement), such Rights shall become void,
and any holder of such Rights shall thereafter have no right to exercise such
Rights.

               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 offices of the Rights Agent.

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

               Subject to the provisions of the Rights Agreement, at the
Company's option, the Rights evidenced by this Certificate (i) may be redeemed
by the Company at a redemption price of $0.01 per Right or (ii) may be exchanged
in whole or in part for shares of the Company's Common Stock, par value $0.001
per share, or Preferred Shares.

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

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

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



                                      B-2
<PAGE>   51

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

Attest:                                      ARBOR SOFTWARE CORPORATION

_____________________________                By: _____________________________

Countersigned:

BANKBOSTON, N.A.

  Rights Agent

By: _________________________
    Authorized Signature



                                      B-3
<PAGE>   52
                    Form of Reverse Side of Right Certificate

                               FORM OF ASSIGNMENT

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

               FOR VALUE RECEIVED _________________________________ hereby
sells, assigns and transfers unto _____________________

________________________________________________________________________________
                  (Please print name and address of transferee)

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

Dated: _____________ ___, _____

                                       _________________________________________
                                                       Signature

Signature Guaranteed:

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

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

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

                                       _________________________________________
                                                       Signature


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



                                      B-4
<PAGE>   53
             Form of Reverse Side of Right Certificate -- continued

                          FORM OF ELECTION TO PURCHASE

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

To ARBOR SOFTWARE CORPORATION:

               The undersigned hereby irrevocably elects to exercise
________________ Rights represented by this Right Certificate to purchase the
Preferred Shares issuable upon the exercise of such Rights and requests that
certificates for such Preferred Shares be issued in the name of:

Please insert social security
or other identifying number

________________________________________________________________________________
                         (Please print name and address)

________________________________________________________________________________

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

Please insert social security
or other identifying number

________________________________________________________________________________
                         (Please print name and address)

________________________________________________________________________________

________________________________________________________________________________


Dated: _____________ ___, _____

                                       _________________________________________
                                                       Signature

Signature Guaranteed:




                                      B-5
<PAGE>   54

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

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

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

                                            ____________________________________
                                                       Signature

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

                                     NOTICE

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

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



                                      B-6
<PAGE>   55
                                                                       Exhibit C



                          SUMMARY OF RIGHTS TO PURCHASE

                                PREFERRED SHARES

               On June 15, 1998, the Board of Directors of Arbor Software
Corporation (the "Company") declared a dividend of one preferred share purchase
right (a "Right") for each outstanding share of common stock, par value $0.001
per share (the "Common Shares") outstanding on July 3, 1998 (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 $0.001 per share (the "Preferred
Shares"), of the Company, at a price of $250 per one one-thousandth of a
Preferred Share (the "Purchase Price"), subject to adjustment. The description
and terms of the Rights are set forth in a Rights Agreement (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 (an
"Acquiring Person") has acquired beneficial ownership of 15% or in the case of
(i) a Grandfathered Stockholder other than a Second Tier Grandfathered
Stockholder, 25%, or (ii) a Second Tier Grandfathered Stockholder, the greater
of 15% or such percentage as is beneficially owned by each Amerindo Holder plus
1%, or more of the outstanding Common Shares 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 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 in the case of (i) a Grandfathered Stockholder other than a
Second Tier Grandfathered Stockholder, 25%, or (ii) a Second Tier Grandfathered
Stockholder, the greater of 15% or such percentage as is beneficially owned by
each Amerindo Holder plus 1%, or more of such outstanding Common Shares (the
earlier of such dates being called the "Distribution Date"), the Rights will be
evidenced, with respect to any of the Common Share certificates outstanding as
of the Record Date, by such Common Share certificate with a copy of this Summary
of Rights attached thereto.

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



                                      C-1
<PAGE>   56
               The Rights are not exercisable until the Distribution Date. The
Rights will expire on July 3, 2008 (the "Final Expiration Date"), unless the
Final Expiration Date is extended or unless the Rights are earlier redeemed by
the Company, in each case, as described below.

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

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

               Preferred Shares purchasable upon exercise of the Rights will not
be redeemable. Each Preferred Share will be entitled to a quarterly dividend
payment of 1000 times the dividend declared per Common Share. In the event of
liquidation, the holders of the Preferred Shares will be entitled to an
aggregate payment of 1000 times the aggregate payment made per Common Share.
Each Preferred Share will have 1000 votes, voting together with the Common
Shares. In the event of any merger, consolidation or other transaction in which
Common Shares are exchanged, each Preferred Share will be entitled to receive
1000 times the amount received per Common Share. These rights are protected by
customary antidilution provisions.

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

               From and after the occurrence of an event described in Section
11(a)(ii) of the Rights Agreement, if the Rights evidenced by this Right
Certificate are or were at any time on or after the earlier of (x) the date of
such event and (y) the Distribution Date (as such term is defined in the Rights
Agreement) acquired or beneficially owned by an Acquiring Person or an Associate
or Affiliate of an Acquiring Person (as such terms are defined in the Rights
Agreement), such Rights shall become void, and any holder of such Rights shall
thereafter have no right to exercise such Rights.

               In the event that, at any time after a Person becomes 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 provision will be made so that each holder of a Right
will thereafter have the right to receive, upon the exercise thereof at the then
current exercise price of the Right, that number of shares of common stock of
the acquiring company which at the 



                                      C-2
<PAGE>   57
time of such transaction will have a market value of two times the exercise
price of the Right. In the event that any person becomes an Acquiring Person,
proper provision shall be made so that each holder of a Right, other than Rights
beneficially owned by the Acquiring Person and its Affiliates and Associates
(which will thereafter be void), will thereafter have the right to receive upon
exercise that number of Common Shares having a market value of two times the
exercise price of the Right. If the Company does not have sufficient Common
Shares to satisfy such obligation to issue Common Shares, or if the Board of
Directors so elects, the Company shall deliver upon payment of the exercise
price of a Right an amount of cash or securities equivalent in value to the
Common Shares issuable upon exercise of a Right; provided that, if the Company
fails to meet such obligation within 30 days following the later of (x) the
first occurrence of an event triggering the right to purchase Common Shares and
(y) the date on which the Company's right to redeem the Rights expires, the
Company must deliver, upon exercise of a Right but without requiring payment of
the exercise price then in effect, Common Shares (to the extent available) and
cash equal in value to the difference between the value of the Common Shares
otherwise issuable upon the exercise of a Right and the exercise price then in
effect. The Board of Directors may extend the 30-day period described above for
up to an additional 60 days to permit the taking of action that may be necessary
to authorize sufficient additional Common Shares to permit the issuance of
Common Shares upon the exercise in full of the Rights.

               At any time after any Person becomes an Acquiring Person and
prior to the acquisition by any person or group of a majority of the outstanding
Common Shares, the Board of Directors of the Company may exchange the Rights
(other than Rights owned by such person or group which have become void), in
whole or in part, at an exchange ratio of one Common Share per Right (subject to
adjustment).

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

               At any time prior to the time any Person becomes an Acquiring
Person, the Board of Directors of the Company may redeem the Rights in whole,
but not in part, at a price of $0.01 per Right (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. Immediately upon any redemption of the Rights, the right to exercise
the Rights will terminate and the only right of the holders of Rights will be to
receive the Redemption Price.

               The terms of the Rights may be amended by the Board of Directors
of the Company without the consent of the holders of the Rights, except that
from and after such time as any person becomes an Acquiring Person no such
amendment may adversely affect the interests of the holders of the Rights (other
than the Acquiring Person and its Affiliates and Associates).

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



                                      C-3
<PAGE>   58


               A copy of the Agreement has been filed with the Securities and
Exchange Commission as an Exhibit to a Registration Statement on Form 8-A dated
June 17, 1998. A copy of the 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 Agreement, which is hereby
incorporated herein by reference.



                                      C-4


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