ATL PRODUCTS INC
8-K, 1998-03-19
COMPUTER STORAGE DEVICES
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<PAGE>   1
                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549


                                 _______________


                                    FORM 8-K

                                 CURRENT REPORT


                     Pursuant to Section 13 or 15(d) of the

                         Securities Exchange Act of 1934


         Date of Report (Date of earliest event reported) MARCH 11, 1998

                               ATL PRODUCTS, INC.
- --------------------------------------------------------------------------------
               (Exact name of registrant as specified in charter)



          DELAWARE                     000-22037              95-3824281
- --------------------------------------------------------------------------------
(State or other jurisdiction          (Commission            (IRS Employer
     of incorporation)                File Number)         Identification No.)



2801 KELVIN AVENUE, IRVINE, CALIFORNIA                           92614
- --------------------------------------------------------------------------------
(Address of principal executive offices)                       (Zip Code)



Registrant's telephone number, including area code  (714) 774-6900  


                                      NONE
- --------------------------------------------------------------------------------
         (Former name or former address, if changed since last report.)



<PAGE>   2
Item 5.  Other Events.

                 On March 11, 1998, the Board of Directors of ATL Products,
Inc. (the "Company") declared a dividend of one preferred share purchase right
(a "Right") for each outstanding share of Common Stock (the "Common Stock"),
par value $.0001 per share, of the Company.  The dividend is payable on March
23, 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 (a "Unit") of Series A Junior Participating Preferred
Stock, par value $.0001 per share (the "Series A Preferred Stock"), of the
Company at a price of $60.00 per Unit (the "Purchase Price"), subject to
adjustment.  The description and terms of the Rights are set forth in a Rights
Agreement dated as of March 11, 1998 (the "Rights Agreement") between the
Company and BankBoston, N.A. as Rights Agent (the "Rights Agent").

                 Until the earlier to occur of (i) the close of business on the
tenth day following the date of a public announcement that a person or group of
affiliated or associated persons (an "Acquiring Person") have acquired
beneficial ownership of 15% or more of the outstanding Common Stock or (ii) 10
business days (or such later date as may be determined by action of the
Continuing 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 more of such outstanding
Common Stock (the earlier of such dates being called the "Distribution Date"),
the Rights will be evidenced, with respect to any of the Common Stock
certificates outstanding as of the Record Date, by such Common Stock
certificate 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 Stock.
Until the Distribution Date (or earlier redemption or expiration of the
Rights), new Common Stock certificates issued after the Record Date, upon
transfer or new issuance of Common Stock 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 Stock, 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 Stock
represented by such certificate.  As soon as practicable following the
Distribution Date, separate certificates evidencing the Rights ("Rights
Certificates") will be mailed to holders of record of the Common Stock as of
the Close of Business on the Distribution Date and such separate Rights
Certificates alone will evidence the Rights.

                 The Rights are not exercisable until the Distribution Date.
The Rights will expire at the close of business on March 23, 2008 (the "Final
Expiration Date"), unless the Final Expiration Date is extended or unless the
Rights are earlier redeemed or exchanged by the Company, in each case as
described below.

                 The Purchase Price payable, and the number of Units of Series
A Preferred Stock 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 Series A Preferred Stock, (ii) upon the grant to
holders of the Units of Series A Preferred Stock of certain rights or warrants
to subscribe for or purchase Units of Series A Preferred Stock at a price, or
securities convertible into Units of Series A Preferred Stock with a conversion
price, less than the then current market price of the Units of Series A
Preferred Stock or (iii) upon the distribution to holders of the Units of
Series A Preferred Stock of evidences of indebtedness or assets (excluding
regular periodic cash dividends paid out of earnings or retained earnings or
dividends payable in Units of Series A Preferred Stock) or of subscription
rights or warrants (other than those referred to above).

                 The number of outstanding Rights and the number of Units of
Series A Preferred Stock issuable upon exercise of each Rights are also subject
to adjustment in the event of a stock split of the Common Stock or a stock
dividend on the Common Stock payable in Common Stock or subdivisions,
consolidations or combinations of the Common Stock occurring, in any such case,
prior to the Distribution Date.

                 Units of Series A Preferred Stock purchasable upon exercise of
the Rights will not be redeemable.  Each Unit of Series A Preferred Stock will
be entitled to an aggregate dividend of 1,000 times the dividend declared per
share of Common Stock.  In the event of liquidation, the holders of the Units
of Series A Preferred Stock will be entitled





                                       2.

<PAGE>   3


to an aggregate payment of 1,000 times the payment made per share of Common
Stock.  Each Unit of Series A Preferred Stock will have 1,000 votes, voting
together with the Common Stock.  Finally, in the event of any merger,
consolidation or other transaction in which shares of Common Stock are
exchanged, each Unit of Series A Preferred Stock will be entitled to receive
1,000 times the amount received per share of Common Stock.  These rights are
protected by customary antidilution provisions.

                 Because of the nature of the dividend, liquidation and voting
rights, the value of the Series A Preferred Stock, the Units of Series A
Preferred Stock purchasable upon exercise of each Rights should approximate the
value of one share of Common Stock.

                 In the event that, after the Rights become exercisable, the
Company is acquired in a merger or other business combination transaction with
an Acquiring Person or an affiliate thereof, or 50% or more of its consolidated
assets or earning power are sold to an Acquiring Person or an affiliate
thereof, proper provision will be made so that each holder of a Rights will
thereafter have the right to receive, upon exercise thereof at the then current
exercise price of the Rights, 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 Rights.

                 In the event that any person or group of affiliated or
associated persons becomes the beneficial owner of 15% or more of the
outstanding shares of Common Stock proper provision shall be made so that each
holder of a Right, other than Rights beneficially owned by the Acquiring Person
(which will thereafter be void), will thereafter have the right to receive upon
exercise that number of shares of Common Stock or Units of Series A Preferred
Stock (or cash, other securities or property) having a market value of two
times the exercise price of the Rights.

                 At any time after the acquisition by a person or group of
affiliated or associated persons of beneficial ownership of 15% or more of the
outstanding shares of Common Stock and prior to the acquisition by such person
or group of 50% or more of the outstanding Common Stock, the Continuing
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 Unit of Series A Preferred Stock (subject to adjustment)
which shall equal, subject to adjustment to reflect stock splits, stock
dividends and similar transactions occurring after the date hereof, that number
obtained by dividing the Purchase Price by the then current per share market
price per Unit of Series A Preferred Stock on the earlier of (i) the date on
which any Person becomes an Acquiring Person and (ii) the date on which a
tender or exchange offer is announced by any Person, if upon consummation
thereof such Person would be the Beneficial Owner of 15% or more of the shares
of Company Common Stock then outstanding.

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

                 At any time prior to the Distribution Date, the Board of
Directors of the Company may redeem the Rights in whole, but not in part, at a
price of $.001 per Right (the "Redemption Price"), upon the approval of
majority of the Continuing Directors.  The redemption of the rights may be made
effective at such time on such basis and with such conditions as the Board of
Directors, upon the approval of the Continuing 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 Rights are also
redeemable under other circumstances as specified in the Rights Agreement.

                 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, upon
the approval of a majority of the Continuing Directors, except that from and
after a Distribution Date no such amendment may adversely affect the interests
of the holders of the Rights.

                 Until a Right is exercised, the holder thereof, as such, will
have no rights as a stockholder of the






                                       3.

<PAGE>   4


Company, including, without limitation, the right to vote or to receive
dividends.

                 The Rights have certain anti-takeover effects.  The Rights
will cause substantial dilution to a person or group that attempts to acquire
the Company on terms not approved by the Company's Board of Directors, except
pursuant to an offer conditioned on a substantial number of Rights being
acquired.  The Rights should not interfere with any merger or other business
combination approved by the Board of Directors since the Rights may be redeemed
by the Company at the Redemption Price prior to the occurrence of a
Distribution Date.

                 The Rights Agreement, dated as of March 11, 1998, between the
Company and the Rights Agent, specifying the terms of the Rights, is attached
hereto as an exhibit and is incorporated herein by reference.  The foregoing
description of the Rights is qualified in its entirety by reference to such
exhibit.  The Certificate of Designation for the Series A Junior Participating
Preferred Stock is attached hereto as an exhibit.  The foregoing description of
the Series A Junior Participating Preferred Stock is qualified in its entirety
by reference to such exhibit.


Item 7.  Financial Statements and Exhibits.


         Exhibit 4       Rights Agreement, dated as of March 11, 1998, between
                         the Company and BankBoston, N.A. which includes the
                         form of Certificate of Designation for the Series A
                         Junior Participating Preferred Stock as Exhibit A, the
                         form of Rights Certificate as Exhibit B and the
                         Summary of Rights to Purchase Series A Preferred
                         Shares as Exhibit C.  Pursuant to the Rights
                         Agreement, printed Right Certificates will not be
                         mailed until as soon as practicable after the earlier
                         of (i) the close of business on the tenth day
                         following the date of a public announcement that a
                         person or group has acquired beneficial ownership of
                         15% or more of the shares of Common Stock or (ii) the
                         tenth business day (or such later date as may be
                         determined by action of a majority of the Continuing
                         Directors) after a person commences, or announces its
                         intention to commence, a tender offer or exchange
                         offer the consummation of which would result in the
                         beneficial ownership by a person or group of 15% or
                         more of the shares of Common Stock.

         Exhibit 21(a)   Press Release dated March 12, 1998.

         Exhibit 21(b)   Form of Letter to Stockholders of ATL Products, Inc.
                         regarding the adoption of the Rights Plan pursuant to
                         the Rights Agreement.





                                       4.
<PAGE>   5


                                   SIGNATURE

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


                                                   ATL PRODUCTS, INC.



DATE:  March 11, 1998              By:  /s/ Kevin C. Daly, Ph.D.
                                      -----------------------------------------
                                   Name:   Kevin C. Daly, Ph.D.
                                   Title: Chairman of the Board,
                                          President and Chief Executive Officer







<PAGE>   6

                                  EXHIBIT INDEX

   EXHIBIT
    NUMBER                    DOCUMENT DESCRIPTION
    ------                    --------------------

       4         Rights Agreement, dated as of March 11, 1998, between the
                 Company and BankBoston, N.A., which includes the form of
                 Certificate of Designation for the Series A Junior
                 Participating Preferred Stock as Exhibit A, the form of Rights
                 Certificate as Exhibit B and the Summary of Rights to Purchase
                 Series A Preferred Shares as Exhibit C. Pursuant to the Rights
                 Agreement, printed Right Certificates will not be mailed until
                 as soon as practicable after the earlier of (i) the close of
                 business on the tenth day following the date of a public
                 announcement that a person or group has acquired beneficial
                 ownership of 15% or more of the shares of Common Stock or (ii)
                 the tenth business day (or such later date as may be determined
                 by action of a majority of the Continuing Directors) after a
                 person commences, or announces its intention to commence, a
                 tender offer or exchange offer the consummation of which would
                 result in the beneficial ownership by a person or group of 15%
                 or more of the shares of Common Stock.

       21(a)     Press Release dated March 12, 1998.

       21(b)     Form of Letter to Stockholders of ATL Products, Inc. regarding
                 the adoption of the Rights Plan pursuant to the Rights
                 Agreement.







<PAGE>   1

                                                              EXECUTION COPY





                               ATL PRODUCTS, INC.


                                       AND


                                BANKBOSTON, N.A.


                                 (RIGHTS AGENT)


                                RIGHTS AGREEMENT


                           DATED AS OF MARCH 11, 1998






<PAGE>   2
                                TABLE OF CONTENTS


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

Section 2.       Appointment of Rights Agent  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     6

Section 3.       Issue of Rights Certificates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     6

Section 4.       Form of Rights Certificates  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     8

Section 5.       Countersignature and Registration  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     9

Section 6.       Transfer, Split-Up, Combination and Exchange of Rights Certificates; Mutilated, 
                 Destroyed, Lost or Stolen Rights Certificates  . . . . . . . . . . . . . . . . . . . . . . .     9

Section 7.       Exercise of Rights; Purchase Price; Expiration Date of Rights  . . . . . . . . . . . . . . .    10

Section 8.       Cancellation and Destruction of Rights Certificates  . . . . . . . . . . . . . . . . . . . .    12

Section 9.       Reservation and Availability of Preferred Stock  . . . . . . . . . . . . . . . . . . . . . .    12

Section 10.      Preferred Stock Record Date  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    14

Section 11.      Adjustment of Purchase Price, Number of Shares or Number of Rights . . . . . . . . . . . . .    14

Section 12.      Certificate of Adjusted Purchase Price or Number of Shares . . . . . . . . . . . . . . . . .    22

Section 13.      Consolidation, Merger or Sale or Transfer of Assets or Earning Power . . . . . . . . . . . .    23

Section 14.      Fractional Rights and Fractional Shares  . . . . . . . . . . . . . . . . . . . . . . . . . .    26

Section 15.      Rights of Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    27

Section 16.      Agreement of Rights Holders  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    27

Section 17.      Rights Certificate Holder Not Deemed a Stockholder . . . . . . . . . . . . . . . . . . . . .    28

Section 18.      Concerning the Rights Agent  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    28

Section 19.      Merger or Consolidation or Change of Name of Rights Agent  . . . . . . . . . . . . . . . . .    28
</TABLE>





                                       i.
<PAGE>   3

<TABLE>
<S>              <C>                                                                                             <C>
Section 20.      Duties of Rights Agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    29

Section 21.      Change of Rights Agent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    31

Section 22.      Issuance of New Rights Certificates  . . . . . . . . . . . . . . . . . . . . . . . . . . . .    32

Section 23.      Redemption and Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    33

Section 24.      Exchange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    33

Section 25.      Notice of Certain Events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    35

Section 26.      Notices  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    36

Section 27.      Supplements and Amendments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    36

Section 28.      Successors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    37

Section 29.      Determinations and Actions by the Board of Directors . . . . . . . . . . . . . . . . . . . .    37

Section 30.      Benefits of This Agreement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    38

Section 31.      Severability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    38

Section 32.      Governing Law  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    38

Section 33.      Counterparts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    38

Section 34.      Descriptive Headings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    38


EXHIBITS

Exhibit A -      Form of Certificate of Designation of Series A Junior Participating Preferred Stock

Exhibit B -      Form of Rights Certificate

Exhibit C -      Summary of Rights to Purchase Shares of Series A Preferred Stock
</TABLE>





                                      ii.
<PAGE>   4

                                RIGHTS AGREEMENT


                 RIGHTS AGREEMENT, dated as of March 11, 1998, between ATL
Products, a Delaware corporation (the "Company"), and BankBoston, N.A.(the
"Rights Agent").

                 WHEREAS, effective March 11, 1998, (the "Rights Dividend
Declaration Date"), the Board of Directors authorized and declared a
distribution of one Right (each, a "Right") for each share of Common Stock (as
hereinafter defined) of the Company outstanding as of the Close of Business (as
hereinafter defined) on March 23, 1998 (the "Record Date"), each Right
initially representing the right to purchase one one-thousandth of a share (a
"Unit") of Preferred Stock (as hereinafter defined) upon the terms and subject
to the conditions herein set forth, and has further authorized and directed the
issuance of one Right with respect to each share of Common Stock that shall
become outstanding between the Record Date and the earliest of the Distribution
Date, the Redemption Date or the Final Expiration Date (as such terms are
hereinafter defined).

                 NOW, THEREFORE, 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 (i) any Person (as such term is
hereinafter defined) who or which, together with all Affiliates and Associates
(as such terms are hereinafter defined) of such Person, shall be the Beneficial
Owner (as such term is hereinafter defined) of 15% or more of the shares of
Common Stock of the Company then outstanding, but shall not include (1) the
Company, any Subsidiary (as such term is hereinafter defined) of the Company,
any employee benefit plan of the Company or any Subsidiary of the Company, or
any entity holding shares of Common Stock for or pursuant to the terms of any
such plan.  Notwithstanding the foregoing:

                 (i)     no Person shall become an "Acquiring Person" as the
        result of an acquisition of shares of Common Stock by the Company
        which, by reducing the number of shares outstanding, increases the
        proportionate number of shares beneficially owned by such Person to 15%
        or more of the shares of Common Stock of the Company then outstanding;
        provided, however, that if a Person shall become the Beneficial Owner
        of 15% or more of the shares of Common Stock of the Company then
        outstanding by reason of share purchases by the Company and shall,
        after such share purchases by the Company, become the Beneficial Owner
        of any additional shares of Common Stock of the Company (or, in the
        case of the members of the Investor Group, become the Beneficial Owner
        of any additional shares of Common Stock of the Company), then such
        Person shall be deemed to be an "Acquiring Person" hereunder; and

                 (ii)    if the Board of Directors of the Company determines
        (upon approval by a





                                       1.
<PAGE>   5


        majority of the Continuing Directors (as such term is hereinafter
        defined)) in good faith that a Person who would otherwise be an
        "Acquiring Person" as defined pursuant to the foregoing provisions of
        this paragraph (a), has become such inadvertently, and such Person
        divests as promptly as practicable a sufficient number of shares of
        Common Stock so that such Person would no longer be an "Acquiring
        Person" (as defined pursuant to the foregoing provisions of this
        paragraph (a)), then such Person shall not be deemed to be an
        "Acquiring Person" for any purpose of this Agreement.

                 "Adjustment Shares" has the meaning set forth in Section
11(a)(ii).

                 "Affiliate" and "Associate" shall have the respective meanings
ascribed to such terms in Rule 12b-2 of the General Rules and Regulations under
the Exchange Act (as such term is hereinafter defined).

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

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

                 (ii)    which such Person or any of such Person's Affiliates
        or Associates, directly or indirectly, 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 (whether or not in writing, other than customary
        agreements with and between underwriters and selling group members with
        respect to a bona fide public offering of securities), 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 the Beneficial Owner of, or to beneficially
        own, securities tendered pursuant to a tender or exchange offer made by
        or on behalf of such Person or any of such Person's Affiliates or
        Associates until such tendered securities are accepted for purchase or
        exchange; or (B) the right to vote pursuant to any agreement,
        arrangement or understanding; provided further, however, that a Person
        shall not be deemed the "Beneficial Owner" of, or to "beneficially
        own," any security under this subparagraph (ii) as a result of an
        agreement, arrangement or understanding to vote such security if such
        agreement, arrangement or understanding: (x) arises solely from a
        revocable proxy given in response to a public proxy or consent
        solicitation made pursuant to, and in accordance with, the applicable
        provisions of the Exchange Act and the Exchange Act Regulations, and
        (y) is not reportable by such Person on Schedule 13D under the Exchange
        Act (or any comparable or successor report); or

                 (iii)   which are beneficially owned, directly or indirectly,
        by any other Person (or any Affiliate or Associate thereof) with which
        such Person (or any of such Person's Affiliates or Associates) has any
        agreement, arrangement or understanding, (whether or not in writing,





                                       2.
<PAGE>   6

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

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

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

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

                 "Common Stock" when used with reference to the Company shall
mean the shares of common stock, par value $.0001, of the Company.  "Common
Stock" when used with reference to any Person other than the Company shall mean
the capital stock (or other 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.

                 "Company" shall have the meaning set forth in the recitals to
this Agreement.

                 "Continuing Director" shall mean a member of the Board of
Directors of the Company who is not an Acquiring Person, or an Affiliate or
Associate of an Acquiring Person, or a representative or agent of an Acquiring
Person or of any such Affiliate or Associate, and who was either (i) a member
of the Board of Directors prior to the date of this Agreement, or (ii)
subsequently became a member of the Board of Directors and whose election or
nomination for election is recommended or approved by a majority of the
Continuing Directors then on the Board of Directors.

                 "current per share market price" shall have the meaning set
forth in Section 11(d)(i)





                                       3.
<PAGE>   7


hereof.

                 "Current Value" shall have the meaning set forth in Section
11(a)(iii) 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 Act" shall mean the Securities Exchange Act of 1934,
as amended.

                 "Exchange Act Regulations" shall mean the General Rules and
Regulations under the Exchange Act.

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

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

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

                 "NASDAQ" shall have the meaning set forth in Section 11(d)
hereof.

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

                 "Preferred Stock" shall mean shares of Series A Preferred
Stock, par value $.0001, of the Company having the rights and preferences set
forth in the Form of Certificate of Designation attached to this Agreement as
Exhibit A.

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

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

                 "Record Date" shall have the meaning set forth in the recitals
to this Agreement.

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

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

                 "Right" shall have the meaning set forth in the recitals to
this Agreement.

                 "Rights Agent" shall have the meaning set forth in the
recitals to this Agreement.





                                       4.
<PAGE>   8

                 "Rights Certificate" shall have the meaning set forth in
Section 3(a) hereof.

                 "Rights Dividend Declaration Date" shall have the meaning set
forth in the recitals to this Agreement.

                 "Section 11(a)(ii) Event" shall mean any event described in
Section 11(a)(ii)(A), (B) or (C) hereof.

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

                 "Section 13 Event" shall mean any event described in clause
(x), (y) or (z) of Section 13(a) hereof.

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

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

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

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

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

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

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

                 "Triggering Event" shall mean any Section 11(a)(ii) Event or
any Section 13 Event.

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





                                       5.
<PAGE>   9
                 Section 3.       Issue of Rights Certificates.

                 (a)  Until the earlier of (i) the Close of Business on the
tenth day after the Shares Acquisition Date and (ii) the Close of Business on
the tenth Business Day (or such later date as may be determined by action of
the Company's Board of Directors upon approval by a majority of the Continuing
Directors prior to such time as any Person becomes an Acquiring Person and of
which the Company will give the Rights Agent prompt written notice) after the
date that a tender or exchange offer by any Person (other than the Company, any
Subsidiary of the Company, any employee benefit plan of the Company or of any
Subsidiary of the Company or any entity holding shares of Common Stock for or
pursuant to the terms of any such plan) is first published or sent or given
within the meaning of Rule 14d-4(a) of the Exchange Act Regulations or any
successor rule or of the first public announcement of the intention of any
Person (other than the Company, any Subsidiary of the Company, any employee
benefit plan of the Company or of any Subsidiary of the Company or any entity
holding shares of Common Stock for or pursuant to the terms of any such plan)
to commence a tender or exchange offer, if upon consummation thereof such
Person would be the Beneficial Owner of 15% or more of the shares of Company
Common Stock then outstanding (the earlier of (i) and (ii) above being the
"Distribution Date"), (x) the Rights will be evidenced (subject to the
provisions of Section 3(b) hereof) by the certificates for shares of Common
Stock registered in the names of the holders thereof (which certificates shall
also be deemed to be Rights Certificates) and not by separate Rights
Certificates, and (y) the right to receive Rights Certificates will be
transferable only in connection with the transfer of shares of Common Stock.
As soon as practicable after the Distribution Date, the Company will notify the
Rights Agent thereof and 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 shares of Common Stock as of the Close of Business on
the Distribution Date, at the address of such holder shown on the records of
the Company, a Rights Certificate, in substantially the form of Exhibit B
hereto (a "Rights Certificate"), evidencing one Right for each share of Common
Stock so held.  As of the Distribution Date, the Rights will be evidenced
solely by such Rights Certificates.

                 (b)     On the Record Date, or as soon as practicable
thereafter, the Company will send a copy of a Summary of Rights to Purchase
Preferred Stock, in substantially the form of Exhibit C hereto (the "Summary of
Rights"), by first-class, postage-prepaid mail, to each record holder of shares
of Common Stock 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 shares of Common Stock outstanding as of the Record Date,
until the Distribution Date, the Rights will be evidenced by such certificates
registered in the names of the holders thereof together with a copy of the
Summary of Rights attached thereto.  Until the Distribution Date (or the
Expiration Date), the surrender for transfer of any certificate for shares of
Common Stock 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 shares of Common Stock represented thereby.

                 (c)     Certificates for shares of Common Stock which become
outstanding





                                       6.
<PAGE>   10

(including, without limitation, reacquired shares of Common Stock referred to
in the last sentence of this paragraph (c)) after the Record Date but prior to
the earlier of the Distribution Date and the Expiration Date shall have
impressed on, printed on, written on or otherwise affixed to them the following
legend:

                 This  certificate  also  evidences  and  entitles the
                 holder  hereof  to  certain  rights as set forth in a
                 Rights  Agreement  between  ATL  Products,  Inc.  and
                 BankBoston,  N.A.,  dated as of March  11,  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 ATL
                 Products,  Inc. Under certain  circumstances,  as set
                 forth in the Rights  Agreement,  such  Rights will be
                 evidenced by separate certificates and will no longer
                 be evidenced by this certificate.  ATL Products, Inc.
                 will mail to the holder of this certificate a copy of
                 the Rights Agreement  without charge after receipt of
                 a   written   request    therefor.    Under   certain
                 circumstances,  as set forth in the Rights Agreement,
                 Rights  issued to any Person who becomes an Acquiring
                 Person (as defined in the Rights Agreement),  whether
                 currently  held by or on behalf of such  person or by
                 any subsequent holder, may become null and void.

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

                 Section 4.       Form of Rights Certificates.

                 (a)  The Rights Certificates (and the forms of election to
purchase Units of Preferred Stock 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 or transaction
reporting system on which the Rights may from time to time be listed, or to
conform to usage.  Subject to the provisions of Section 11 and Section 22
hereof, the Rights Certificates shall entitle the holders thereof to purchase
the number of Units of Preferred Stock as shall be set forth therein at the
price per Unit of Preferred Stock set forth therein, but the number





                                       7.
<PAGE>   11

of such Units of Preferred Stock and the Purchase Price shall be subject to
adjustment as provided herein.

                 (b)     Any Rights Certificate issued pursuant hereto that
represents Rights beneficially owned by: (i) an Acquiring Person or any
Associate or Affiliate of an Acquiring Person, (ii) a transferee of an
Acquiring Person (or of any such Associate or Affiliate) who becomes a
transferee after the Acquiring Person becomes such or (iii) a transferee of an
Acquiring Person (or of any such Associate or Affiliate) who becomes a
transferee prior to or concurrently with the Acquiring Person becoming such and
receives such Rights pursuant to either (A) a transfer (whether or not for
consideration) from the Acquiring Person to holders of equity interests in such
Acquiring Person or to any Person with whom such Acquiring Person has any
continuing agreement, arrangement or understanding regarding the transferred
Rights or (B) a transfer which a majority of the Continuing Directors of the
Company has determined is part of a plan, arrangement or understanding which
has as a primary purpose or effect avoidance of Section 7(e) hereof shall
contain (to the extent feasible) the following legend:

                 The Rights represented by this Rights Certificate are or were
                 beneficially owned by a Person who was or became an Acquiring
                 Person or an Affiliate or Associate of an Acquiring Person (as
                 such terms are defined in the Rights Agreement between ATL
                 Products, Inc. and BankBoston, N.A., as Rights Agent, dated as
                 of March 11, 1998 (the "Rights Agreement").  Accordingly, this
                 Rights Certificate and the Rights represented hereby may
                 become null and void in the circumstances specified in Section
                 7(e) of the Rights Agreement.

                 Section 5.       Countersignature and Registration.

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

                 (b)     Following the Distribution Date, the Rights Agent will
keep or cause to be kept, at its office designated for such purpose, books for
registration and transfer of the Rights





                                       8.
<PAGE>   12


Certificates issued hereunder.  Such books shall show the names and addresses
of the respective holders of the Rights Certificates, the number of Rights
evidenced on its face by each of the Rights Certificates and the date of each
of the Rights Certificates.

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

                 (a)  Subject to the provisions of Sections 4(b), 7(e) and 14
hereof, at any time after the Close of Business on the Distribution Date, and
at or prior to the Close of Business on the Expiration Date, any Rights
Certificate or Rights Certificates may be transferred, split up, combined or
exchanged for another Rights Certificate or Rights Certificates, entitling the
registered holder to purchase a like number of Units of Preferred Stock (or,
following a Triggering Event, other securities, cash or other assets, as the
case may be) as the Rights Certificate or Rights Certificates surrendered then
entitled such holder to purchase.  Any registered holder desiring to transfer,
split up, combine or exchange any Rights Certificate or Rights Certificates
shall make such request in writing delivered to the Rights Agent, and shall
surrender the Rights Certificate or Rights Certificates to be transferred,
split up, combined or exchanged at the office of the Rights Agent designated
for such purpose.  Neither the Rights Agent nor the Company shall be obligated
to take any action whatsoever with respect to the transfer of any such
surrendered Rights Certificate until the registered holder shall have completed
and signed the certificate contained in the form of assignment on the reverse
side of such Rights Certificate and shall have provided such additional
evidence of the identity of the Beneficial Owner (or former Beneficial Owner)
or Affiliates or Associates thereof as the Company shall reasonably request.
Thereupon the Rights Agent shall, subject to Sections 4(b), 7(e) and 14 hereof,
countersign and deliver to the person entitled thereto a Rights Certificate or
Rights Certificates, as the case may be, as so requested.  The Company may
require payment of a sum sufficient to cover any tax or governmental charge
that may be imposed in connection with any transfer, split up, combination or
exchange of Rights Certificates.

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

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

                 (a)  Except as provided in Sections 23(c) and 7(e), the
registered holder of any Rights Certificate may exercise the Rights evidenced
thereby (except as otherwise provided herein) in whole or in part at any time
after the Distribution Date upon surrender of the Rights Certificate, with the
form of election to purchase and certification on the reverse side thereof duly
executed, to the Rights





                                       9.
<PAGE>   13


Agent at the office of the Rights Agent designated for such purpose, together
with payment of the Purchase Price for each Unit of Preferred Stock as to which
the Rights are exercised, at or prior to the earliest of (i) the Close of
Business on the tenth anniversary hereof (the "Final Expiration Date"), (ii)
the time at which the Rights are redeemed as provided in Section 23 hereof (the
"Redemption Date"), or (iii) the time at which such Rights are exchanged as
provided in Section 24 hereof (the earlier of (i), (ii) and (iii) being the
"Expiration Date").

                 (b)     The purchase price for each Unit of Preferred Stock
pursuant to the exercise of a Right shall initially be $60.00 (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 Rights Certificate representing
exercisable Rights, with the form of election to purchase duly executed,
accompanied by payment of the Purchase Price for the number of Units of
Preferred Stock (or other securities or property, as the case may be) to be
purchased and an amount equal to any applicable transfer tax required to be
paid by the holder of such Rights Certificate in accordance with Section 9
hereof in cash, or by certified check or cashier's check payable to the order
of the Company, the Rights Agent shall, subject to Section 20(k) hereof,
thereupon promptly (i) (A) requisition from any transfer agent of the Preferred
Stock (or make available, if the Rights Agent is the transfer agent for the
Preferred Stock) a certificate or certificates for the number of Units of
Preferred Stock to be purchased and the Company hereby irrevocably authorizes
its transfer agent to comply with all such requests or (B) if the Company shall
have elected to deposit the total number of Units of Preferred Stock issuable
upon exercise of the Rights hereunder with a depositary agent, requisition from
the depositary agent a depositary receipt or depositary receipts representing
such number of Units of Preferred Stock as are to be purchased (in which case
certificates for the Units of Preferred Stock represented by such receipt or
receipts shall be deposited by the transfer agent with the depositary agent)
and the Company hereby directs the depositary agent to comply with such
request, (ii) when appropriate, requisition from the Company the amount of cash
to be paid in lieu of issuance of fractional shares in accordance with Section
14 hereof, (iii) after receipt of such certificates or depositary receipts,
cause the same to be delivered to or upon the order of the registered holder of
such Rights Certificate, registered in such name or names as may be designated
by such holder and (iv) when appropriate, after receipt thereof, deliver such
cash to or upon the order of the registered holder of such Rights Certificate.
The payment of the Purchase Price (as such amount may be reduced (including to
zero) pursuant to Section 11(a)(iii) hereof) may be made in cash or by
certified bank check or bank draft payable to the order of the Company.  In the
event that the Company is obligated to issue other securities of the Company,
pay cash and/or distribute other property pursuant to Section 11(a) hereof, the
Company will make all arrangements necessary so that such other securities,
cash and/or other property are available for distribution by the Rights Agent,
if and when appropriate.





                                      10.
<PAGE>   14
                 (d)     In case the registered holder of any Rights
Certificate shall exercise less than all the Rights evidenced thereby, a new
Rights Certificate evidencing a number of Rights equivalent to the number of
Rights remaining unexercised shall be issued by the Rights Agent to the
registered holder of such Rights Certificate or to such registered holder's
duly authorized assigns, subject to the provisions of Section 14 hereof.

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

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

                 Section 8.       Cancellation and Destruction of Rights
Certificates.  All Rights Certificates surrendered for the purpose of exercise,
transfer, split up, combination or exchange shall, if surrendered to the
Company or to any of its agents, be delivered to the Rights Agent for
cancellation or in cancelled form, or, if surrendered to the Rights Agent,
shall be cancelled by it, and no Rights 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 Rights
Certificate purchased or acquired by the Company otherwise than upon the
exercise thereof.  The Rights Agent shall deliver all cancelled Rights
Certificates to the Company, or shall, at the written request of the Company,
destroy such cancelled Rights Certificates, and in such case shall deliver a
certificate of destruction





                                      11.
<PAGE>   15


thereof to the Company.

                 Section 9.       Reservation and Availability of Preferred
Stock.

                 (a)  The Company covenants and agrees that it will use its
best efforts to cause to be reserved and kept available out of and to the
extent of its authorized and unissued Units of Preferred Stock not reserved for
another purpose that will be sufficient to permit the exercise in full of all
outstanding Rights.  Upon the occurrence of any events resulting in an increase
in the aggregate number of shares of Preferred Stock (or other equity
securities of the Company) issuable upon exercise of all outstanding Rights
above the number then reserved, the Company shall make appropriate increases in
the number of shares so reserved.

                 (b)     If the Units of Preferred Stock to be issued and
delivered upon the exercise of the Rights are at any time listed on a national
securities exchange or included for quotation on any transaction reporting
system, the Company shall during the period from the Distribution Date to the
Expiration Date use its best efforts to cause all shares reserved for such
issuance to be listed on such exchange or included for quotation on any such
transaction reporting system upon official notice of issuance upon such
exercise.

                 (c)     The Company shall use its best efforts to (i) file, as
soon as practicable following the earliest date after the first occurrence of a
Section 11(a)(ii) Event in which the consideration to be delivered by the
Company upon exercise of the Rights has been determined in accordance with
Section 11(a)(iii) hereof, or as soon as is required by law following the
Distribution Date, as the case may be, a registration statement under the
Securities Act, with respect to the securities purchasable upon exercise of the
Rights on an appropriate form, (ii) cause such registration statement to become
effective as soon as practicable after such filing and (iii) cause such
registration statement to remain effective (with a prospectus at all times
meeting the requirements of the Securities Act) until the earlier of (A) the
date as of which the Rights are no longer exercisable for such securities and
(B) the Expiration Date.  The Company will also take such action as may be
appropriate under, or to ensure compliance with, the securities or "blue sky"
laws of the various states in connection with the exercisability of the Rights.
Notwithstanding any provision of this Agreement to the contrary, the Rights
shall not be exercisable in any jurisdiction, unless the requisite
qualification in such jurisdiction shall have been obtained, or an exemption
therefrom shall be available and until a registration statement has been
declared effective.

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

                 (e)     The Company further covenants and agrees that it will
pay when due and payable any and all federal and state transfer taxes and
charges which may be payable in respect of





                                      12.
<PAGE>   16

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

                 Section 10.      Preferred Stock Record Date.  Each person in
whose name any certificate for Units of Preferred Stock (or, following the
occurrence of a Triggering Event, other securities) is issued upon the exercise
of Rights shall for all purposes be deemed to have become the holder of record
of the Units of Preferred Stock (or, following the occurrence of a Triggering
Event, other securities) represented thereby on, and such certificate shall be
dated, the date upon which the Rights Certificate evidencing such Rights was
duly surrendered and payment of the Purchase Price (and any applicable transfer
taxes) was made; provided, however, that if the date of such surrender and
payment is a date upon which the Preferred Stock (or, following the occurrence
of a Triggering Event, other securities) transfer books of the Company are
closed, such person shall be deemed to have become the record holder of such
shares on, and such certificate shall be dated, the next succeeding Business
Day on which the Preferred Stock transfer books of the Company are open;
provided further, however, that if delivery of Units of Preferred Stock is
delayed pursuant to Section 9(c), such Persons shall be deemed to have become
the record holders of such Units of Preferred Stock only when such Units first
become deliverable.  Prior to the exercise of the Rights evidenced thereby, the
holder of a Rights Certificate shall not be entitled to any rights of a
stockholder of the Company with respect to securities 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.  Prior to the exercise of the Rights
evidenced thereby, the holder of a Rights Certificate shall not be entitled to
any rights of a holder of a Unit of Preferred Stock 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 and kinds of
securities 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 Stock
        payable in shares of Preferred Stock, (B) subdivide the outstanding
        shares of Preferred Stock, (C) combine the outstanding Preferred Stock
        into a smaller number of shares Preferred Stock or (D) issue any shares
        of its capital stock in a reclassification of the Preferred Stock
        (including any such reclassification in





                                      13.
<PAGE>   17

        connection with a consolidation or merger in which the Company is the
        continuing or surviving corporation), except as otherwise provided in
        this Section 11(a), the Purchase Price in effect at the time of the
        record date for such dividend or of the effective date of such
        subdivision, combination or reclassification, and the number and kind
        of shares of capital stock issuable on such date, shall be
        proportionately adjusted so that the holder of any Rights exercised
        after such time shall be entitled to receive the aggregate number and
        kind of shares of capital stock which, if such Rights had been
        exercised immediately prior to such date and at a time when the
        Preferred Stock transfer books of the Company were open, such holder
        would have owned upon such exercise and been entitled to receive by
        virtue of such dividend, subdivision, combination or reclassification;
        provided, however, that in no event shall the consideration to be paid
        upon the exercise of one Right be less than the aggregate par value of
        the shares of capital stock of the Company issuable upon exercise of
        one Right.  If an event occurs which would require an adjustment under
        both this Section 11(a)(i) and Section 11(a)(ii), the adjustment
        provided for in this Section 11(a)(i) shall be in addition to, and
        shall be made prior to, any adjustment required pursuant to Section
        11(a)(ii).

                     (ii)  Subject to Section 24 of this Agreement, in the
        event that (A) any Acquiring Person or any Associate or Affiliate of
        any Acquiring Person, at any time after the date of this Agreement,
        directly or indirectly, shall (1) merge into the Company or otherwise
        combine with the Company and the Company shall be the continuing or
        surviving corporation of such merger or combination and shares of
        Company Common Stock shall remain outstanding and unchanged, (2) in one
        transaction or a series of transactions, transfer any assets to the
        Company or any of its Subsidiaries in exchange (in whole or in part)
        for shares of Company Common Stock, for other equity securities of the
        Company or any such Subsidiary, or for securities exercisable for or
        convertible into shares of equity securities of the Company or any of
        its Subsidiaries (whether shares of Company Common Stock or otherwise)
        or otherwise obtain from the Company or any of its Subsidiaries, with
        or without consideration, any additional shares of such equity
        securities or securities exercisable for or convertible into such
        equity securities other than pursuant to a pro rata distribution to all
        holders of shares of Company Common Stock, (3) sell, purchase, lease,
        exchange, mortgage, pledge, transfer or otherwise acquire or dispose
        of, in one transaction or a series of transactions, to, from or with
        the Company or any of its Subsidiaries or any employee benefit plan
        maintained by the Company or any of its Subsidiaries or any trustee or
        fiduciary with respect to such plan acting in such capacity, assets
        (including securities) on terms and conditions less favorable to the
        Company or such Subsidiary or plan than those that could have been
        obtained in arm's-length negotiations with an unaffiliated third party,
        other than pursuant to a transaction set forth in Section 13(a) hereof,
        (4) sell, purchase, lease, exchange, mortgage, pledge, transfer or
        otherwise acquire or dispose of, in one transaction or a series of
        transactions, to, from or with the Company or any of its Subsidiaries
        or any employee benefit plan maintained by the Company or any of its
        Subsidiaries or any trustee or fiduciary with respect to such plan
        acting in such capacity (other than transactions, if any, consistent
        with those engaged in, as of the date hereof, by the Company and such
        Acquiring Person or such Associate or Affiliate), assets (including
        securities or intangible assets) having an aggregate fair market value
        of more





                                      14.
<PAGE>   18


        than $5,000,000, other than pursuant to a transaction set forth in
        Section 13(a) hereof, (5)  receive, or any designee, agent or
        representative of such Acquiring Person or any Affiliate or Associate
        of such Acquiring Person shall receive, any compensation from the
        Company or any of its Subsidiaries other than compensation for
        full-time employment as a regular employee at rates in accordance with
        the Company's (or its Subsidiaries') past practices, or (6) receive the
        benefit, directly or indirectly (except proportionately as a holder of
        shares of Company Common Stock or as required by law or governmental
        regulation), of any loans, advances, guarantees, pledges or other
        financial assistance or any tax credits or other tax advantages
        provided by the Company or any of its Subsidiaries or any employee
        benefit plan maintained by the Company or any of its Subsidiaries or
        any trustee or fiduciary with respect to such plan acting in such
        capacity; or (B) any Person shall become an Acquiring Person, unless
        the event causing the Person to become an Acquiring Person is a
        transaction set forth in Section 13(a); or (C) during such time as
        there is an Acquiring Person, there shall be any reclassification of
        securities (including any reverse stock split), or recapitalization of
        the Company, or any merger or consolidation of the Company with any of
        its Subsidiaries or any other transaction or series of transactions
        involving the Company or any of its Subsidiaries, other than a
        transaction or transactions to which the provisions of Section 13(a)
        apply (whether or not with or into or otherwise involving an Acquiring
        Person), which has the effect, directly or indirectly, of increasing by
        more than 1% the proportionate share of the outstanding shares of any
        class of equity securities of the Company or any of its Subsidiaries
        that is directly or indirectly beneficially owned by any Acquiring
        Person or any Person or any Associate or Affiliate of any Acquiring
        Person;

then promptly following the occurrence of an event described in Section
11(a)(ii)(A), (B) or (C) (a "Section 11(a)(ii) Event"), proper provision shall
be made so that each holder of a Right, except as provided in Section 7(e)
hereof, shall thereafter have the right to receive for each Right, upon
exercise thereof in accordance with the terms of this Agreement and payment of
the then-current Purchase Price, in lieu of the number of Units of Preferred
Stock for which a Right was exercisable immediately prior to the first
occurrence of a Section 11(a)(ii) Event, such number of Units of Preferred
Stock as shall equal the result obtained by multiplying the then-current
Purchase Price by the then number of Units of Preferred Stock for which a Right
was exercisable (or would have been exercisable if the Distribution Date had
occurred) immediately prior to the first occurrence of a Triggering Event, and
dividing that product by 50% of the current per share market price (determined
pursuant to Section 11(d) hereof) for shares of Common Stock on the date of
occurrence of the Triggering Event (such number of Units of Preferred Stock
being hereinafter referred to as the "Adjustment Shares").

                    (iii)  In the event that the number of Units of Preferred
        Stock which are authorized by the Company's Certificate of
        Incorporation but not outstanding or reserved for issuance for purposes
        other than upon exercise of the Rights are not sufficient to permit the
        exercise in full of the Rights, or if any necessary regulatory approval
        for such issuance has not been obtained by the Company, the Company
        shall, in lieu of issuing Units of Preferred Stock in accordance with
        Section 11(a)(ii) hereof, upon approval by a majority of the Continuing
        of





                                      15.
<PAGE>   19


        Directors of the Company: (A) determine the excess of (1) the value of
        the Units of Preferred Stock issuable upon the exercise of a Right (the
        "Current Value") over (2) the Purchase Price (such excess being
        referred to as the "Spread") and (B) with respect to each Right, make
        adequate provision to substitute for such Units of Preferred Stock,
        upon exercise of the Rights, (1) cash, (2) a reduction in the Purchase
        Price, (3) other equity securities of the Company (including, without
        limitation, Common Stock or shares or units of shares of any series of
        preferred stock which the Board of Directors of the Company, upon
        approval by a majority of the Continuing Directors, has deemed to have
        the same value as the Units of Preferred Stock (such shares or units of
        preferred stock are herein called "preferred stock equivalents")),
        except to the extent that the Company has not obtained any necessary
        regulatory approval for such issuance, (4) debt securities of the
        Company, except to the extent that the Company has not obtained any
        necessary regulatory approval for such issuance, (5) other assets or
        (6) any combination of the foregoing, having an aggregate value equal
        to the Current Value, where such aggregate value has been determined by
        the Board of Directors of the Company, upon approval by a majority of
        the Continuing Directors, based upon the advice of a nationally
        recognized investment banking firm selected by the Board of Directors
        of the Company, upon approval by a majority of the Continuing
        Directors; provided, however, if the Company shall not have made
        adequate provision to deliver value pursuant to clause (B) above within
        thirty (30) days following the later of (x) occurrence of a Section
        11(a)(ii) Event, and (y) the date on which the Company's right of
        redemption pursuant to Section 23(a) expires (the later of (x) and (y)
        being referred to herein as the "Section 11(a)(iii) 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, Units of Preferred Stock (to the extent available), and then, if
        necessary, cash, which Units and/or cash have an aggregate value equal
        to the Spread.

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





                                      16.
<PAGE>   20
securities so to be offered are initially convertible).  In case such
subscription price may be paid in a consideration part or all of which shall be
in a form other than cash, the value of such consideration shall be as
determined in good faith by a majority of the Continuing Directors of the
Company, whose determination shall be described in a statement filed with the
Rights Agent and shall be binding on the Rights Agent and the holders of the
Rights.  Units of Preferred Stock 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 a
distribution to all holders of Units of Preferred Stock (including any such
distribution made in connection with a consolidation or merger in which the
Company is the continuing or surviving corporation) of evidences of
indebtedness, cash (other than a regular quarterly cash dividend) assets (other
than a dividend payable in Units of Preferred Stock but including any dividend
payable in equity securities other than Preferred Stock) or subscription rights
or warrants (excluding those referred to in Section 11(d) 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 (as determined pursuant to Section 11(d)) of the Preferred Stock on such
record date, less the fair market value (as determined in good faith by a
majority of the Continuing Directors of the Company, whose determination shall
be described in a statement filed with the Rights Agent and shall be binding on
the Rights Agent and the holder of rights) of the cash, assets or evidences of
indebtedness to be distributed or of such subscription rights or warrants
distributable in respect of a share of Preferred Stock and the denominator of
which shall be such current per share market price (as determined pursuant to
Section 11(d)) of a share of Preferred Stock.  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
        thirty (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 thirty (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,





                                      17.
<PAGE>   21


        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 Nasdaq National Market System ("NASDAQ") or,
        if the Security is not listed or admitted to trading on the NASDAQ, 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 NASDAQ or such other system then in use, or,
        if on any such date the Security is not quoted by any such
        organization, the average of the closing bid and asked prices as
        furnished by a professional market maker making a market in the
        Security selected by a majority of the Continuing Directors.  If on any
        such date no market maker is making a market in the Security, the
        "current per share market price" of such Security on such date as
        determined in good faith by the Board of Directors of the Company, as
        provided for above shall be used.  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 Stock shall be
        determined in accordance with the method set forth in Section 11(d)(i).
        If the "current per share market price" of the Preferred Stock cannot
        be determined in the manner provided above or if the Preferred Stock is
        not publicly held or listed or traded in a manner described in clause
        (i) of this Section 11(d), the "current per share market price" of the
        Preferred Stock shall be conclusively deemed to be an amount equal to
        $1,000 (as such amount may be appropriately adjusted for such events as
        stock splits, stock dividends and recapitalizations with respect to
        shares of Company Common Stock occurring after the date of this
        Agreement) multiplied by the current market price per share of Company
        Common Stock.  If shares of neither the Company Common Stock nor
        Preferred Stock is publicly held or so listed or traded, "current per
        share market price" of the Preferred Stock shall mean the fair value
        per share as determined in good faith by the Board of Directors of the
        Company, upon approval by a majority of the Continuing Directors, whose
        determination shall be described in a statement filed with the Rights
        Agent and shall be binding on the Rights Agent and the holders of the
        Rights.

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





                                      18.
<PAGE>   22


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

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

                 (h)     Unless the Company shall have exercised its election
as provided in Section 11(i), upon each adjustment of the Purchase Price as a
result of the calculations made in Sections 11(b) and (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
Units of Preferred Stock (calculated to the nearest one-millionth of a share of
Preferred Stock) obtained by dividing (i) the product obtained by multiplying
(x) the number of Units of Preferred Stock 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 by, (ii) 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 Units of Preferred Stock
purchasable upon the exercise of a Right.  Each of the Rights outstanding after
such adjustment of the number of Rights shall be exercisable for the number of
Units of Preferred Stock for which a Right was exercisable immediately prior to
such adjustment.  Each Right held of record prior to such adjustment of the
number of Rights shall become that number of Rights (calculated to the nearest
one one-thousandth) obtained by dividing the Purchase Price in effect
immediately prior to adjustment of the Purchase Price by the Purchase Price in
effect immediately after adjustment of the Purchase Price.  The Company shall
make a public announcement of its election to adjust the number of Rights,
indicating the record date for the adjustment, and, if known at the time, the
amount of the adjustment to be made.  This record date may be the date on which
the Purchase Price is adjusted or any day thereafter, but, if the Rights
Certificates have been issued, shall be at least ten days later than the date
of the public announcement.  If Rights Certificates have been issued, upon each
adjustment of the number of Rights pursuant to this Section 11(i), the Company
shall, as promptly as practicable, cause to be distributed to holders of record
of Rights Certificates on such record date Rights Certificates evidencing,
subject to Section 14 hereof, the additional Rights to which such holders shall
be entitled as a result of such adjustment, or, at the option of the Company,
shall cause to be distributed to such holders of record in substitution and
replacement for the Rights Certificates held by such holders prior to the date
of adjustment, and upon surrender thereof, if





                                      19.
<PAGE>   23


required by the Company, new Rights Certificates evidencing all the Rights to
which such holders shall be entitled after such adjustment.  Rights
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 Rights 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 Units of Preferred Stock issuable upon the
exercise of the Rights, the Rights Certificates theretofore and thereafter
issued may continue to express the Purchase Price per Unit and the number of
Units of Preferred Stock which were expressed in the initial Rights
Certificates issued hereunder.

                 (k)     Before taking any action that would cause an
adjustment reducing the Purchase Price below the then par value of the number
of Units of Preferred Stock issuable upon exercise of the Rights, the Company
shall take any corporate action which may, in the opinion of its counsel, be
necessary in order that the Company may validly and legally issue fully paid
and nonassessable number of Units of Preferred Stock 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 Rights exercised after such record
date of that number of Units of Preferred Stock and other capital stock or
securities of the Company, if any, issuable upon such exercise over and above
the Units of Preferred Stock and other capital stock or securities of the
Company, if any, issuable upon such exercise on the basis of the Purchase Price
in effect prior to such adjustment; provided, however, that the Company shall
deliver to such holder a due bill or other appropriate instrument evidencing
such holder's right to receive such additional shares (fractional or otherwise)
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) consolidation or subdivision of the
Preferred Stock, (ii) issuance wholly for cash of any Unit of Preferred Stock
at less than the current market price, (iii) issuance wholly for cash of
Preferred Stock or securities which by their terms are convertible into or
exchangeable for Preferred Stock, (iv) dividends on Preferred Stock payable in
Preferred Stock or (v) issuance of rights, options or warrants referred to in
this Section 11, hereafter made by the Company to holders of Units of its
Preferred Stock shall not be taxable to such stockholders.

                 (n)     The Company shall not, at any time after the
Distribution Date, (i) consolidate with any other Person (other than a
Subsidiary of the Company in a transaction which complies with Section 11(o)),
(ii) merge with or into any other Person (other than a Subsidiary of the
Company in a transaction which complies with Section 11(o)), or (iii) sell or
transfer (or permit any Subsidiary to sell or transfer), in one transaction, or
a series of transactions, assets or earning power aggregating





                                      20.
<PAGE>   24


more than 50% of the assets or earning power of the Company and its
Subsidiaries (taken as a whole) to any other Person or Persons (other than the
Company and/or any of its Subsidiaries in one or more transactions each of
which complies with Section 11(o)), if (x) at the time of or immediately after
such consolidation, merger or sale there are any rights, warrants or other
instruments or securities outstanding or agreements in effect which would
substantially diminish or otherwise eliminate the benefits intended to be
afforded by the Rights or (y) prior to, simultaneously with or immediately
after such consolidation, merger or sale, the Person which constitutes, or
would constitute the "Principal Party" for purposes of Section 13(a) shall have
distributed or otherwise transferred to its stockholders or other persons
holding an equity interest in such Person Rights previously owned by such
Person or any of its Affiliates and Associates; provided, however, this Section
11(n) shall not affect the ability of any Subsidiary of the Company to
consolidate with, merge with or into, or sell or transfer assets or earning
power to, any other Subsidiary of the Company.

                 (o)     After the Distribution Date, the Company shall not,
except as permitted by Section 23 or Section 26, take (or permit any Subsidiary
to take) any action if at the time such action is taken it is reasonably
foreseeable that such action will diminish substantially or otherwise eliminate
the benefits intended to be afforded by the Rights.

                 (p)     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 outstanding shares of Common Stock payable in shares of
Common Stock or (ii) effect a subdivision, combination or consolidation of the
Common Stock (by reclassification or otherwise than by payment of dividends in
shares of Common Stock) into a greater or lesser number of shares of Common
Stock, then in any such case the number of Units of Preferred Stock purchasable
after such event upon proper exercise of each Right shall be determined by
multiplying the number of Units of Preferred Stock so purchasable immediately
prior to such event by a fraction, the numerator of which is the number of
shares of Common Stock outstanding immediately before such event and the
denominator of which is the number of shares of Common Stock outstanding
immediately after such event.  The adjustments provided for in this Section
11(p) shall be made successively whenever such a dividend is declared or paid
or such a subdivision, combination or consolidation is effected.

                 Section 12.      Certificate of Adjusted Purchase Price or
Number of Shares.  Whenever an adjustment is made as provided in Sections 11
and 13 hereof, the Company shall promptly (a) prepare a certificate setting
forth such adjustment, and a brief statement of the facts accounting for such
adjustment, (b) file with the Rights Agent and with each transfer agent for the
shares of Common Stock or Units of Preferred Stock a copy of such certificate
and (c) mail a brief summary thereof to each holder of a Rights Certificate in
accordance with Section 25 hereof.  Notwithstanding the foregoing sentence, the
failure by the Company to make such certification or give such notice shall not
affect the validity of or the force or effect of the requirement for such
adjustment.  The Rights Agent shall be fully protected in relying on any such
certificate and on any adjustment contained therein and shall not be deemed to
have knowledge of such adjustment unless and until it shall have received such
certificate.





                                      21.
<PAGE>   25

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

                 (a)  Except as provided in Section 13(b) hereof, in the event
that, following a Shares Acquisition Date, directly or indirectly, (x) the
Company shall consolidate with, or merge with and into, any other Person (other
than a Subsidiary of the Company in a transaction which complies with Section
11(o)), and the Company shall not be the continuing or surviving corporation of
such consolidation or merger, (y) any Person (other than a Subsidiary of the
Company in a transaction which complies with Section 11(o)) shall consolidate
with the Company, or merge with and into the Company and the Company shall be
the continuing or surviving corporation of such consolidation or merger and, in
connection with such consolidation or merger, all or part of the shares of
Common Stock shall be changed into or exchanged for stock or other securities
of any other Person or cash or any other property, or (z) the Company shall
sell or otherwise transfer (or one or more of its Subsidiaries shall sell or
otherwise transfer) to any Person or Persons (other than a Subsidiary of the
Company in a transaction which complies with Section 11(o)), in one or more
transactions, directly or indirectly, assets or earning power aggregating 50%
or more of the assets or earning power of the Company and its Subsidiaries
(taken as a whole), (any such event being a "Section 13 Event"), then, and in
each such case, proper provision shall be made so that:  (i) each holder of a
Right, except as provided in Section 7(e), shall thereafter have the right to
receive, upon the exercise thereof at the then current Purchase Price, such
number of validly authorized and issued, fully paid and non-assessable shares
of Common Stock of the Principal Party (as such term is hereinafter defined),
which shares shall not be subject to any liens, encumbrances, rights of first
refusal, transfer restrictions or other adverse claims, as shall be equal to
the result obtained by (1) multiplying the then current Purchase Price by the
number of Units of Preferred Stock for which a Right is exercisable immediately
prior to the first occurrence of a Section 13 Event (or, if a Section 11(a)(ii)
Event has occurred prior to the first occurrence of a Section 13 Event,
multiplying the number of such Units of Preferred Stock for which a Right would
be exercisable hereunder but for the occurrence of such Section 11(a)(ii) Event
by the Purchase Price which would be in effect hereunder but for such first
occurrence) and (2) dividing that product (which, following the direct
occurrence of a Section 13 Event, shall be the "Purchase Price" for all
purposes of this Agreement) by 50% of the current per share market price
(determined pursuant to Section 11(d)) of the shares of Common Stock of such
Principal Party on the date of consummation of such Section 13 Event; (ii) such
Principal Party shall thereafter be liable for, and shall assume, by virtue of
such Section 13 Event, all the obligations and duties of the Company pursuant
to this Agreement; (iii) the term "Company" shall, for all purposes of this
Agreement, thereafter be deemed to refer to such Principal Party, it being
specifically intended that the provisions of Section 11 shall apply only to
such Principal Party following the first occurrence of a Section 13 Event; (iv)
such Principal Party shall take such steps (including, but not limited to, the
reservation of a sufficient number of shares of its Common Stock) in connection
with the consummation of any such transaction as may be necessary to ensure
that the provisions of this Agreement shall thereafter be applicable to its
shares of Common Stock thereafter deliverable upon the exercise of the Rights;
and (v) the provisions of Section 11(a)(ii) shall be of no further effect
following the first occurrence of any Section 13 Event.





                                      22.
<PAGE>   26

                 (b)     "Principal Party" shall mean:

                      (i)  in the case of any transaction described in clause
        (x) or (y) of the first sentence of Section 13(a), (A) the Person that
        is the issuer of any securities into which shares of Company Common
        Stock are converted in such merger or consolidation, or, if there is
        more than one such issuer, the issuer of shares of Common Stock that
        has the highest aggregate current market price (determined pursuant to
        Section 11(d)) and (B) if no securities are so issued, the Person that
        is the other party to such merger or consolidation, or, if there is
        more than one such Person, the Person the Common Stock of which has the
        highest aggregate current market price (determined pursuant to Section
        11(d)); and

                     (ii)  in the case of any transaction described in clause
        (z) of the first sentence of Section 13(a), the Person that is the
        party receiving the largest portion of the assets or earning power
        transferred pursuant to such transaction or transactions, or, if each
        Person that is a party to such transaction or transactions receives the
        same portion of the assets or earning power transferred pursuant to
        such transaction or transactions or if the Person receiving the largest
        portion of the assets or earning power cannot be determined, whichever
        Person the Common Stock of which has the highest aggregate current
        market price (determined pursuant to Section 11(d)); provided, however,
        that in any such case, (1) if the Common Stock of such Person is not at
        such time and has not been continuously over the preceding twelve-month
        period registered under Section 12 of the Exchange Act ("Registered
        Common Stock"), or such Person is not a corporation, and such Person is
        a direct or indirect Subsidiary of another Person that has Registered
        Common Stock outstanding, "Principal Party" shall refer to such other
        Person; (2) if the Common Stock of such Person is not Registered Common
        Stock or such Person is not a corporation, and such Person is a direct
        or indirect Subsidiary of another Person but is not a direct or
        indirect Subsidiary of another Person which has Registered Common Stock
        outstanding, "Principal Party" shall refer to the ultimate parent
        entity of such first-mentioned Person; (3) if the Common Stock of such
        Person is not Registered Common Stock or such Person is not a
        corporation, and such Person is directly or indirectly controlled by
        more than one Person, and one or more of such other Persons has
        Registered Common Stock outstanding, "Principal Party" shall refer to
        whichever of such other Persons is the issuer of the Registered Common
        Stock having the highest aggregate current per share market price
        (determined pursuant to Section 11(d)); and (4) if the Common Stock of
        such Person is not Registered Common Stock or such Person is not a
        corporation, and such Person is directly or indirectly controlled by
        more than one Person, and none of such other Persons has Registered
        Common Stock outstanding, "Principal Party" shall refer to whichever
        ultimate parent entity is the corporation having the greatest
        stockholders' equity or, if no such ultimate parent entity is a
        corporation, shall refer to whichever ultimate parent entity is the
        entity having the greatest net assets.

                 (c)     The Company shall not consummate any such
consolidation, merger, sale or transfer unless the Principal Party shall have a
sufficient number of authorized shares of Common Stock which have not been
issued or reserved for issuance to permit the exercise in full of the Rights





                                      23.
<PAGE>   27


in accordance with this Section 13, and unless prior thereto the Company and
such Principal Party shall have executed and delivered to the Rights Agent a
supplemental agreement providing for the terms set forth in paragraphs (a) and
(b) of this Section 13 and further providing that the Principal Party will:

                      (i)  (A)  file on an appropriate form, as soon as
        practicable following the execution of such agreement, a registration
        statement under the Securities Act with respect to the shares of Common
        Stock that may be acquired upon exercise of the Rights, (B) cause such
        registration statement to remain effective (and to include a prospectus
        complying with the requirements of the Securities Act) until the
        Expiration Date, and (C) as soon as practicable following the execution
        of such agreement take such action as may be required to ensure that
        any acquisition of such shares of Common Stock upon the exercise of the
        Rights complies with any applicable state securities or "blue sky"
        laws; and

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

                 (d)     In case the Principal Party which is to be a party to
a transaction referred to in this Section 13 has a provision in any of its
authorized securities or in its Certificate of Incorporation or Bylaws or other
instrument governing its corporate affairs, which provision would have the
effect of (i) causing such Principal Party to issue, in connection with, or as
a consequence of, the consummation of a transaction referred to in this Section
13, shares of Common Stock of such Principal Party at less than the then
current market price per share (determined pursuant to Section 11(d)) or
securities exercisable for, or convertible into, shares of Common Stock of such
Principal Party at less than such then current marker price (other than to
holders of Rights pursuant to this Section 13) or (ii) providing for any
special payment, tax or similar provisions in connection with the issuance of
the shares of Common Stock of such Principal Party pursuant to the provisions
of this Section 13, then, in such event, the Company shall not consummate any
such transaction unless prior thereto the Company and such Principal Party
shall have executed and delivered to the Rights Agent a supplemental agreement
providing that the provision in question of such Principal Party shall have
been cancelled, waived or amended, or that the authorized securities shall be
redeemed, so that the applicable provision will have no effect in connection
with, or as a consequence of, the consummation of the proposed transaction.

                 (e)     The provisions of this Section 13 shall similarly
apply to successive mergers or consolidations or sales or other transfers. In
the event that a Section 13 Event shall occur at any time after the occurrence
of a Section 11(a)(ii) Event, the Rights which have not theretofore been
exercised shall thereafter become exercisable in the manner described in
Section 13(a).





                                      24.
<PAGE>   28

                 Section 14.      Fractional Rights and Fractional Shares.

                 (a)  The Company shall not be required to issue fractions of
Rights or to distribute Rights Certificates which evidence fractional Rights.
In lieu of such fractional Rights, there shall be paid to the registered
holders of the Rights Certificates with regard to which such fractional Rights
would otherwise be issuable, an amount in cash equal to the same fraction of
the current market value of a whole Right.  For the purposes of this Section
14(a), the current market value of a whole Right shall be the closing price of
the Rights for the Trading Day immediately prior to the date on which such
fractional Rights would have been otherwise issuable.  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 NASDAQ or, if the Rights are not listed or admitted to trading
on the NASDAQ, 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 Directors.  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, upon
approval by a majority of the Continuing Directors, shall be used.

                 (b)     The Company shall not be required to issue fractions
of Preferred Stock (other than fractions which are integral multiples of one
one-thousandth of a share of Preferred Stock) upon exercise of the Rights or to
distribute certificates which evidence fractional Preferred Stock (other than
fractions which are integral multiples of one one-thousandth of a share of
Preferred Stock).  Fractions of Preferred Stock in integral multiples of one
one-thousandth of a share of Preferred Stock may, at the election of the
Company, be evidenced by depositary receipts, pursuant to an appropriate
agreement between the Company and a depositary selected by it; provided,
however, that such agreement shall provide that the holders of such depositary
receipts shall have all the rights, privileges and preferences to which they
are entitled as beneficial owners of the Preferred Stock represented by such
depositary receipts.  In lieu of fractional shares of Preferred Stock that are
not integral multiples of one one-thousandth of a share of Preferred Stock, the
Company shall pay to the registered holders of Rights Certificates at the time
such Rights are exercised as herein provided an amount in cash equal to the
same fraction of the current market value of one share of Preferred Stock as
determined pursuant to Section 11(d).

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





                                      25.
<PAGE>   29

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

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

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

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

                 (c)     subject to Sections 6(a) and 7(f) hereof, the Company
and the Rights Agent may deem and treat the person in whose name the Rights
Certificate (or, prior to the Distribution Date, the associated Common Stock
certificate) is registered as the absolute owner thereof and of the Rights
evidenced thereby (notwithstanding any notations of ownership or writing on the
Rights Certificates or the associated Common Stock 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; and

                 (d)     notwithstanding anything in this Agreement to the
contrary, neither the Company nor the Rights Agent shall have any liability to
any holder of a Right or other Person as a result of its inability to perform
any of its obligations under this Agreement by reason of any preliminary or
permanent injunction or other order, decree or ruling issued by a court of
competent jurisdiction or by a governmental, regulatory or administrative
agency or commission, or any statute, rule, regulation or executive order
promulgated or enacted by any governmental authority, prohibiting or otherwise
restraining performance of such obligation; provided, however, the Company must
use its best efforts to have any such order, decree or ruling lifted or
otherwise overturned as soon as





                                      26.
<PAGE>   30


possible.

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

                 Section 18.      Concerning the Rights Agent.  The Company
agrees to pay to the Rights Agent reasonable compensation for all services
rendered by it hereunder and, from time to time, on demand of the Rights Agent,
its reasonable expenses and counsel fees and other disbursements incurred in
the administration and execution of this Agreement and the exercise and
performance of its duties hereunder.  The Company also agrees to indemnify the
Rights Agent for, and to hold it harmless against, any loss, liability, or
expense, incurred without gross negligence, or willful misconduct on the part
of the Rights Agent, for any action taken, suffered or omitted by the Rights
Agent in connection with the execution, acceptance and administration of this
Agreement and the exercise and performance hereunder of its duties, including
the costs and expenses of defending against and appealing any claim of
liability in the premises.  The indemnity provided herein shall survive the
termination of this Agreement and the expiration of the Rights.  The costs and
expenses incurred in enforcing this right of indemnification shall be paid by
the Company.

                 The Rights Agent may conclusively rely upon and 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 and the exercise and performance of its duties hereunder in reliance
upon any Rights Certificate or certificate for Units of Preferred Stock or
shares of Common Stock or for other securities of the Company, instrument of
assignment or transfer, power of attorney, endorsement, affidavit, letter,
notice, direction, consent, certificate, statement, or other paper or document
believed by it to be genuine and to be signed, executed and, where necessary,
verified or acknowledged, by the proper person or persons, or otherwise upon
the advice of counsel as set forth in Section 20 hereof.

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

                 (a)  Any corporation into which the Rights Agent or any
successor Rights Agent may be merged or with which it may be consolidated, or
any corporation resulting from any merger or consolidation to which the Rights
Agent or any successor Rights Agent shall be a party, or any corporation
succeeding to the stock transfer or corporate trust business of the Rights
Agent or any





                                      27.
<PAGE>   31

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

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

                 Section 20.      Duties of Rights Agent.  The Rights Agent
undertakes the duties and obligations imposed by this Agreement upon the
following terms and conditions and no implied duties or obligations shall be
read into this Agreement against the Rights Agent, by all of which the Company
and the holders of Rights Certificates, by their acceptance thereof, shall be
bound:

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

                 (b)     Whenever in the administration, exercise and
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, suffering or omitting any action hereunder, such fact
or matter (unless other evidence in respect thereof be herein specifically
prescribed) may be deemed to be conclusively proved and established by a
certificate signed by any one of the Chairman of the Board, the Chief Executive
Officer, the President, any Vice President, the 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, suffered or
omitted in good faith by it under the provisions of this Agreement in reliance
upon such certificate.

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





                                      28.
<PAGE>   32

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

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

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

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





                                      29.
<PAGE>   33

to be taken or omitted.

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

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

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

                 (k)     If, with respect to any Rights Certificate surrendered
to the Rights Agent for exercise, transfer, split up, combination or exchange,
the certification on the form of assignment or form of election to purchase, as
the case may be, that the Rights evidenced by the Rights Certificate are not
owned by an Acquiring Person, or an Affiliate or Associate thereof, has either
not been completed or in any manner indicates any other response thereto, the
Rights Agent shall not take any further action with respect to such requested
exercise, transfer, split up, combination or exchange, without first consulting
with the Company.

                 Section 21.      Change of Rights Agent.  The Rights Agent or
any successor Rights Agent may resign and be discharged from its duties under
this Agreement upon thirty (30) days' notice in writing mailed to the Company
and to each transfer agent of the Common Stock or Preferred Stock (as to which
the Rights Agent has received prior written notice) by registered or certified
mail, and the Company shall mail notice thereof to the holders of the Rights
Certificates by first-class mail.  The Company may remove the Rights Agent or
any successor Rights Agent upon thirty (30) days' notice in writing, mailed to
the Rights Agent or successor Rights Agent, as the case may be, and to each
transfer agent of the Common Stock or Preferred Stock (as to which the Rights
Agent has received prior written notice) by registered or certified mail, and
to the holders of the Rights Certificates by first-class mail.  If the Rights
Agent shall resign or be removed or shall otherwise become incapable of acting,
the Company shall appoint a successor to the Rights Agent.  If the Company
shall fail to make such appointment within a period of thirty (30) days after
giving notice of such removal or after it has been notified in writing of such
resignation or incapacity by the resigning or incapacitated Rights Agent or by
the holder of a Rights Certificate (who shall, with such





                                      30.
<PAGE>   34


notice, submit such holder's Rights Certificate for inspection by the Company),
then the registered holder of any Rights Certificate may apply to any court of
competent jurisdiction for the appointment of a new Rights Agent.  Any
successor Rights Agent, whether appointed by the Company or by such a court,
shall be a corporation organized and doing business under the laws of the
United States or of any state of the United States, in good standing,
authorized under such laws to exercise corporate trust or stock transfer
powers, and subject to supervision or examination by federal or state authority
and which has at the time of its appointment as Rights Agent a combined capital
and surplus of at least $50 million.  After appointment, the successor Rights
Agent shall be vested with the same powers, rights, duties and responsibilities
as if it had been originally named as Rights Agent without further act or deed;
but the predecessor Rights Agent shall deliver and transfer to the successor
Rights Agent any property at the time held by it hereunder, and execute and
deliver any further assurance, conveyance, act or deed necessary for the
purpose.  Not later than the effective date of any such appointment the Company
shall file notice thereof in writing with the predecessor Rights Agent and each
transfer agent of the Common Stock or Preferred Stock, and mail a notice
thereof in writing to the registered holders of the Rights Certificates.
Failure to give any notice provided for in this Section 21, however, or any
defect therein, shall not affect the legality or validity of the resignation or
removal of the Rights Agent or the appointment of the successor Rights Agent,
as the case may be.

                 Section 22.      Issuance of New Rights Certificates.
Notwithstanding any of the provisions of this Agreement or of the Rights to the
contrary, the Company may, at its option, issue new Rights Certificates
evidencing Rights in such form as may be approved by its Board of Directors,
upon approval by a majority of the Continuing 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 Rights
Certificates made in accordance with the provisions of this Agreement.  In
addition, in connection with the issuance or sale of shares of Common Stock
following the Distribution Date and prior to the Expiration Date, the Company
(a) shall, with respect to shares of Common Stock so issued or sold pursuant to
the exercise of stock options or under any employee benefit plan or arrangement
or upon the exercise, conversion or exchange of securities of the Company
currently outstanding or issued at any time in the future by the Company and
(b) may, in any other case, if deemed necessary or appropriate by the Board of
Directors of the Company, upon approval by a majority of the Continuing
Directors, issue Rights Certificates representing the appropriate number of
Rights in connection with such issuance or sale; provided, however, that (i) no
such Rights Certificate shall be issued and this sentence shall be null and
void ab initio if, and to the extent that, such issuance or this sentence would
create a significant risk of or result in material adverse tax consequences to
the Company or the Person to whom such Rights Certificate would be issued or
would create a significant risk of or result in such options' or employee
plans' or arrangements' failing to qualify for otherwise available special tax
treatment and (ii) no such Rights Certificate shall be issued if, and to the
extent that, appropriate adjustment shall otherwise have been made in lieu of
the issuance thereof.

                 Section 23.      Redemption and Termination.





                                      31.
<PAGE>   35

                 (a) The Company may, at its option, upon approval by a
majority of the Continuing Directors, at any time prior to the earlier of (i)
the Distribution Date and (ii) the Final Expiration Date redeem all but not
less than all the then outstanding Rights at a redemption price of $0.001 per
Right, appropriately adjusted to reflect any stock split, stock dividend or
similar transaction occurring after the date hereof (such redemption price
being hereinafter referred to as the "Redemption Price"), and the Company may,
at its option, pay the Redemption Price either in cash, shares of Common Stock
(based on the current per share market price thereof (as determined pursuant to
Section 11(d) hereof) at the time of redemption), or any other form of
consideration deemed appropriate by the Board of Directors; provided, however,
that, notwithstanding anything to the contrary contained in this Section 23(a),
the Company may not take any action pursuant to this Section 23(a) unless (x)
at the time of the action of the Board of Directors of the Company approving
such redemption and the form of payment of the Redemption Price, there are then
in office not less than two Continuing Directors and (y) such action is
approved by a majority of the Continuing Directors then in office.  The
redemption of the Rights by the Board of Directors may be made effective at
such time on such basis and with such conditions as a majority of the
Continuing Directors in its sole discretion may establish.

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

                 (c)     Notwithstanding anything contained in this Agreement
to the contrary, the Rights shall not be exercisable pursuant to Section 7(a)
at any time when the Rights are redeemable hereunder.

                 Section 24.      Exchange.

                 (a)  The Company, at its option, upon approval by a majority
of the Company's Continuing Directors, at any time after any Person becomes an
Acquiring Person, may exchange all





                                      32.
<PAGE>   36

or part of the then outstanding and exercisable Rights (which shall not include
Rights that have become void pursuant to the provisions of Section 7(e) hereof)
for Units of Preferred Stock at an exchange ratio equal to, subject to
adjustment to reflect stock splits, stock dividends and similar transactions
occurring after the date hereof, that number obtained by dividing the Purchase
Price by the then current per share market price per Unit of Preferred Stock on
the earlier of (i) the date on which any Person becomes an Acquiring Person and
(ii) the date on which a tender or exchange offer by any Person (other than the
Company, any Subsidiary of the Company, any employee benefit plan maintained by
the Company or any of its Subsidiaries or any trustee or fiduciary with respect
to such plan acting in such capacity) is first published or sent or given
within the meaning of Rule 14d-4(a) of the Exchange Act Regulations or any
successor rule, if upon consummation thereof such Person would be the
Beneficial Owner of 15% or more of the shares of Common Stock then outstanding
(such exchange ratio being hereinafter referred to as the "Section 24(a)
Exchange Ratio").  Notwithstanding the foregoing, the Company may not effect
such exchange at any time after any Person (other than the Company, any
Subsidiary of the Company, any employee benefit plan maintained by the Company
or any of its Subsidiaries, or any trustee or fiduciary with respect to such
plan acting in such capacity), together with all Affiliates and Associates of
such Person, becomes the Beneficial Owner of 50% or more of the shares of
Common Stock 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 Units of Preferred
Stock equal to the number of such Rights held by such holder multiplied by the
Section 24(a) 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 Units of
Preferred Stock for Rights will be effected and, in the event of any partial
exchange, the number of Rights which will be exchanged.  Any partial exchange
shall be effected pro rata based on the number of Rights (other than Rights
which have become void pursuant to the provisions of Section 7(e) hereof) held
by each holder of Rights.

                 (c)     In the event that the number of shares of Preferred
Stock which are authorized by the Company's Certificate of Incorporation but
not outstanding or reserved for issuance for purposes other than upon exercise
of the Rights are not sufficient to permit any exchange of Rights as
contemplated in accordance with this Section 24, the Company shall take all
such action as may be necessary to authorize additional shares of Preferred
Stock for issuance upon exchange of the Rights or make adequate provision to
substitute (1) cash, (2) Company Common Stock or other equity securities of the
Company, (3) debt securities of the Company, (4) other assets, or (5) any
combination of the foregoing, having an aggregate value equal to the Adjustment
Spread, where such aggregate value has been determined by a majority of the
Continuing Directors.





                                      33.
<PAGE>   37

                 (d)     The Company shall not be required to issue fractions
smaller than or to distribute certificates which evidence fractions smaller
than one one-thousandth of a share of Preferred Stock.  In lieu thereof, the
Company shall pay to the registered holders of the Rights Certificates with
regard to which such fractional Units would otherwise be issuable an amount in
cash equal to the same fraction of the current market value (as determined
pursuant to Section 11(d)(i) hereof) of one Unit of Preferred Stock.

                 Section 25.      Notice of Certain Events.

                 (a) In case the Company shall propose (i) to pay any dividend
payable in stock of any class to the holders of its Preferred Stock or to make
any other distribution to the holders of its Preferred Stock (other than a
regular quarterly cash dividend), (ii) to offer to the holders of its Preferred
Stock rights or warrants to subscribe for or to purchase any additional Units
of Preferred Stock or shares of stock of any class or any other securities,
rights or options, (iii) to effect any reclassification of its Preferred Stock
(other than a reclassification involving only the subdivision of outstanding
Preferred Stock), (iv) to effect any consolidation or merger into or with any
other Person (other than a Subsidiary of the Company in a transaction which
complies with Section 11(o)), 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 Stock payable in shares of Common
Stock or to effect a subdivision, combination or consolidation of the shares of
Common Stock (by reclassification or otherwise than by payment of dividends in
shares of Common Stock), then, in each such case, the Company shall give to
each holder of a Rights Certificate, in accordance with Section 26 hereof, a
notice of such proposed action, which shall specify the record date for the
purposes of such stock dividend, or distribution of rights or warrants, or the
date on which such 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 shares of Common Stock and/or
shares of Preferred Stock, if any such date is to be fixed, and such notice
shall be so given in the case of any action covered by clause (i) or (ii) above
at least ten (10) days prior to the record date for determining holders of the
shares of Preferred Stock for purposes of such action, and in the case of any
such other action, at least ten (10) days prior to the date of the taking of
such proposed action or the date of participation therein by the holders of the
shares of Common Stock and/or shares of Preferred Stock, whichever shall be the
earlier.

                 (b)     In case any of the events 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 Rights 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.  In the event any Person becomes an Acquiring
Person, the Company will promptly notify the Rights Agent thereof.

                 Section 26.      Notices.  Notices or demands authorized by
this Agreement to be given





                                      34.
<PAGE>   38


or made by the Rights Agent or by the holder of any Rights Certificate to or on
behalf of 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:

                 ATL Products, Inc.
                 2801 Kelvin Avenue
                 Irvine, California 92614

                 Attention: Kevin C. Daly, Ph.D.


Subject to the provisions of Section 21 hereof, any notice or demand authorized
by this Agreement to be given or made by the Company or by the holder of any
Rights Certificate to or on behalf of the Rights Agent shall be sent by
registered or certified mail and shall be deemed given upon receipt and
addressed (until another address is filed in writing with the Company) as
follows:

                 BankBoston, N.A.
                 c/o Boston EquiServe Limited Parntership
                 150 Royall Street
                 Canton, MA  02021

                 Attention: Client Adminstration

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

                 Section 27.      Supplements and Amendments.  Prior to the
Distribution Date, the Company may supplement or amend this Agreement in any
respect, without the approval of any holders of Rights, by action of its Board
of Directors, upon approval by a majority of the Continuing Directors, and the
Rights Agent shall, if the Company so directs, execute such supplement or
amendment. From and after the Distribution Date, the Company may from time to
time supplement or amend this Agreement without the approval of any holders of
Rights, by action of its Board of Directors, upon approval by a majority of the
Continuing Directors, in order (i) to cure any ambiguity, (ii) to correct or
supplement any provision contained herein which may be defective or
inconsistent with any other provisions herein, (iii) to shorten or lengthen any
time period hereunder or (iv) to change or supplement the provisions hereunder
in any manner which the Company may deem necessary or desirable and which shall
not adversely affect the interests of the holders of Rights Certificates (other
than an Acquiring Person or an Affiliate or Associate of an Acquiring Person);
provided, however, that this Agreement may not be supplemented or amended to
lengthen, pursuant to clause (iii) of this sentence, (A) a time period relating
to when the Rights may be redeemed at such time as the Rights are not then
redeemable or (B) any other time period unless such lengthening is





                                      35.
<PAGE>   39


for the purpose of protecting, enhancing or clarifying the rights of, and/or
the benefits to, the holders of Rights Certificates (other than an Acquiring
Person or an Affiliate or Associate of an Acquiring Person).  Upon receipt of a
certificate from an appropriate officer of the Company that the proposed
supplement or amendment is consistent with this Section 27 and, after such time
as any Person has become an Acquiring Person, that the proposed supplement or
amendment does not adversely affect the interests of the holders of Rights, the
Rights Agent shall execute such supplement or amendment.  Prior to the
Distribution Date, the interests of the holders of Rights shall be deemed
coincident with the interests of the holders of shares of Common Stock.

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

                 Section 29.      Determinations and Actions by the Board of
Directors.

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

                 (b)     Notwithstanding anything to the contrary contained in
this Agreement, the concurrence of a majority of the Continuing Directors then
in office shall be required to give effect to any action, calculation,
interpretation or determination made by the Board of Directors of the Company
in the administration of this Agreement and the exercise of the rights or
powers granted to the Board of Directors of the Company, to the Continuing
Directors or to the Company pursuant to this Agreement and no effect shall be
given to any such action, calculation, interpretation, determination or
exercise of rights or powers unless at least two Continuing Directors are then
in office.

                 Section 30.      Benefits of This Agreement.  Nothing in this
Agreement shall be construed to give to any person or corporation other than
the Company, the Rights Agent and the registered holders of the Rights
Certificates (and, prior to the Distribution Date, shares of Common





                                      36.
<PAGE>   40


Stock) any legal or equitable right, remedy or claim under this Agreement; but
this Agreement shall be for the sole and exclusive benefit of the Company, the
Rights Agent and the registered holders of the Rights Certificates (and, prior
to the Distribution Date, shares of Common Stock).

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

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

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

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
















                                      37.
<PAGE>   41

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



ATTEST:                                   ATL PRODUCTS, INC.

By /s/ JAMES A. PIPP                      By /s/ KEVIN C. DALY, PH.D.
  -----------------------------------       -----------------------------------
Name:  James A. Pipp                      Name:  Kevin C. Daly, Ph.D.
Title: Vice President, Controller and     Title: Chairman of the Board,
       and Secretary                             President and Chief
                                                 Executive Officer


ATTEST:                                   BANKBOSTON, N.A.
                                          as Rights Agent


By /s/ GREGORY BARTEK                     By /s/ KATHERINE ANDERSON
  -----------------------------------       -----------------------------------
   Name: Gregory Bartek                     Name: Katherine Anderson
   Title: Account Manager                   Title Director, Client Services















                                      38.
<PAGE>   42

                                                                       Exhibit A



                                      FORM

                                       of

                           CERTIFICATE OF DESIGNATION

                                       of

                 SERIES A JUNIOR PARTICIPATING PREFERRED STOCK

                                       of

                               ATL PRODUCTS, INC.

                        (Pursuant to Section 151 of the
                       Delaware General Corporation Law)

                       __________________________________


                 ATL Products, Inc., 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 March 4, 1998;

                 RESOLVED, that pursuant to the authority granted to and vested
in the Board of Directors of the Corporation (hereinafter called the "Board of
Directors" or the "Board") in accordance with the provisions of the Certificate
of Incorporation, the Board of Directors hereby creates a series of Preferred
Stock, par value $.0001 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:

                 Series A Junior Participating Preferred Stock:

                 Section 1.  Designation and Amount.  The shares of such 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 Five Hundred Thousand (500,000). 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





                                       A-1
<PAGE>   43


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.

                 Section 2.  Dividends and Distributions.

                 (A)     Subject to the rights of the holders of any shares of
        any series of Preferred Stock (or any similar stock) ranking prior and
        superior to the Series A Preferred Stock with respect to dividends,
        each holder of a share of Series A Preferred Stock, in preference to
        the holders of shares of Common Stock, par value $.0001 per share (the
        "Common Stock"), of the Corporation, and of any other junior stock,
        shall be entitled to receive, when 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
        Series A Preferred Stock, in an amount per share (rounded to the
        nearest cent) equal to, subject to the provision for adjustment
        hereinafter set forth, One Thousand (1,000) times the aggregate per
        share amount of all cash dividends, and One Thousand (1,000) times the
        aggregate per share amount (payable in kind) of all non-cash dividends
        or other distributions, other than a dividend payable in shares of
        Common Stock or a subdivision of the outstanding shares of Common Stock
        (by reclassification or otherwise), declared on the Common Stock since
        the immediately preceding Quarterly Dividend Payment Date or, with
        respect to the first Quarterly Dividend Payment Date, since the first
        issuance of a share or fraction 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 clause (b) of the preceding sentence shall be
        adjusted by multiplying such amount by a fraction, the numerator of
        which is the number of shares of Common Stock outstanding immediately
        after such event and the denominator of which is the number of shares
        of Common Stock that were outstanding immediately prior to such event.

                 (B)     The Corporation shall declare a dividend or
        distribution on the shares of 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); provided, however, that, in the event no
        dividend or distribution shall have been declared on the Common Stock
        during the period between any Quarterly Distribution Date and the next
        subsequent Quarterly Dividend Payment Date, a dividend of $1 per share
        of Series A Preferred Stock shall nevertheless be payable on such
        subsequent Quarterly Dividend Payment Date.





                                       A-2
<PAGE>   44
                 (C)     Dividends shall begin to accrue and be cumulative on
        each outstanding share of Series A Participating Preferred Stock from
        the Quarterly Dividend Payment Date next preceding the date of issue of
        such share of Series A Participating Preferred Stock, unless the date
        of issue of such share is prior to the record date for the first
        Quarterly Dividend Payment Date, in which case dividends on such share
        shall begin to accrue from the date of issue of such share, 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 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 One Thousand (1,000) 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 herein, in 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 provided
        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





                                       A-3
<PAGE>   45


        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 shares of 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;

                    (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 (either as to dividends or
                 upon dissolution, liquidation or winding up) to the Series A
                 Preferred Stock; or

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

                 (B)     The 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





                                       A-4
<PAGE>   46


otherwise acquired by the Corporation in any manner whatsoever shall be retired
and cancelled promptly after the acquisition thereof.  All such shares shall
upon their cancellation become authorized but unissued shares of Preferred
Stock and may be reissued as part of a new series of Preferred Stock subject to
the conditions and restrictions on issuance set forth herein, in the
Certificate of Incorporation, or in any other 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.

                 (A)     Upon any liquidation, dissolution or winding up of the
Corporation, no distribution shall be made (1) to the holders of shares of
stock ranking junior (either as to dividends or upon liquidation, dissolution
or winding up) to the Series A Preferred Stock unless, prior thereto, the
holders of shares of Series A Preferred Stock shall have received One Thousand
Dollars ($1,000) per share, plus an amount equal to accrued and unpaid
dividends and distributions thereon, whether or not declared, to the date of
such payment, provided that the holders of shares of 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 1,000 times the
aggregate amount to be distributed per share to holders of shares of Common
Stock, or (2) to the holders of shares of stock ranking on a parity (either as
to dividends or upon liquidation, dissolution or winding up) with the Series A
Preferred Stock, except distributions made ratably on the Series A Preferred
Stock and all such parity stock in proportion to the total amounts to which the
holders of all such shares are entitled upon such liquidation, dissolution or
winding up.  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 proviso in clause (1) of the preceding sentence shall be adjusted by
multiplying such amount by a fraction the numerator of which is the number of
shares of Common Stock outstanding immediately after such event and the
denominator of which is the number of shares of Common Stock that were
outstanding immediately prior to such event.

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

                 (C)     In the event the Corporation shall at any time after
the Rights Declaration Date (i) declare any dividend on Common Stock payable in
shares of Common Stock, (ii) subdivide the outstanding Common Stock, or (iii)
combine the outstanding Common Stock into a smaller number





                                       A-5
<PAGE>   47


of shares, then in each such case the Adjustment Number in effect immediately
prior to such event shall be adjusted by multiplying such Adjustment Number by
a fraction the numerator of which is the number of shares of Common Stock
outstanding immediately after such event and the denominator of which is the
number of shares of Common Stock that were outstanding immediately prior to
such event.

                 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 One Thousand (1,000)
times the aggregate amount of stock, securities, cash and/or any other property
(payable in kind), as the case may be, into which or for which each share of
Common Stock is changed or exchanged.  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 adjusted by multiplying such amount by a
fraction, the numerator of which is the number of shares of Common Stock
outstanding immediately after such event and the denominator of which is the
number of shares of Common Stock that were outstanding immediately prior to
such event.

                 Section 8.  No Redemption.  The shares of Series A Preferred
Stock shall not be redeemable.

                 Section 9.  Rank.  The Series A Preferred Stock shall rank,
with respect to the payment of dividends and the distribution of assets, junior
to all series of any other class of the Corporation's Preferred Stock.

                 Section 10.  Amendment.  The Certificate of Incorporation of
the Corporation shall not be amended in any manner which would materially alter
or change the powers, preferences or special rights of the Series A Preferred
Stock so as to affect them adversely without the affirmative vote of the
holders of at least a majority of the outstanding shares of Series A Preferred
Stock, voting together as a single class.





                                       A-6
<PAGE>   48
                 IN WITNESS WHEREOF, this Certificate of Designation is
executed on behalf of the Corporation by its President and its corporate seal
attested by its Secretary this __th day of March, 1998.


                                     ___________________________________________
                                     Name:  Kevin C. Daly, Ph.D.
                                     Title: Chairman of the Board, President and
                                            Chief Executive Officer



Attest:

___________________________________________
Name: James A. Pipp
Title: Vice President, Controller
 and Secretary













                                       A-7
<PAGE>   49
                                                                      Exhibit B

                           Form of Rights Certificate

Certificate No. R-                                              ________ Rights


                 NOT  EXERCISABLE  AFTER  MARCH 23, 2008 OR EARLIER IF
                 REDEMPTION OR EXCHANGE OCCURS. THE RIGHTS ARE SUBJECT
                 TO  REDEMPTION  AT THE OPTION OF THE COMPANY AT $.001
                 PER RIGHT AND TO  EXCHANGE  ON THE TERMS SET FORTH IN
                 THE RIGHTS  AGREEMENT.  UNDER CERTAIN  CIRCUMSTANCES,
                 RIGHTS  BENEFICIALLY  OWNED BY AN ACQUIRING PERSON OR
                 AN AFFILIATE OR ASSOCIATE OF AN ACQUIRING  PERSON (AS
                 SUCH TERMS ARE DEFINED IN THE RIGHTS  AGREEMENT)  AND
                 ANY SUBSEQUENT  HOLDER OF SUCH RIGHTS MAY BECOME NULL
                 AND VOID.  [THE  RIGHTS  REPRESENTED  BY THIS  RIGHTS
                 CERTIFICATE  ARE  OR  WERE  BENEFICIALLY  OWNED  BY A
                 PERSON  WHO WAS OR BECAME AN  ACQUIRING  PERSON OR AN
                 AFFILIATE OR  ASSOCIATE  OF AN  ACQUIRING  PERSON (AS
                 SUCH  TERMS ARE  DEFINED  IN THE  RIGHTS  AGREEMENT).
                 ACCORDINGLY,  THIS RIGHTS  CERTIFICATE AND THE RIGHTS
                 REPRESENTED  HEREBY MAY  BECOME  NULL AND VOID IN THE
                 CIRCUMSTANCES SPECIFIED IN SUCH AGREEMENT.]


                               Rights Certificate

                               ATL PRODUCTS, INC.

                 This certifies that _______________, or registered assigns, is
the registered owner of the number of Rights set forth above, each of which
entitles the owner thereof, subject to the terms, provisions and conditions of
the Rights Agreement, dated as of March 11, 1998 (the "Rights Agreement"),
between ATL Products, Inc., 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., Massachusetts time, on March 23, 2008 at the office of
the Rights Agent designated for such purpose, or at the office of its successor
as Rights Agent, one one-thousandth (a "Unit") of a fully paid non-assessable
share of Series A Junior Participating Preferred Stock, par value $.0001 per
share (the "Series A Preferred Stock") of the Company, at a purchase price of
$60.00 per Unit of Series A Preferred Stock (the





                                       B-1
<PAGE>   50


"Purchase Price"), upon presentation and surrender of this Rights Certificate
with the Form of Election to Purchase duly executed.  The number of Rights
evidenced by this Rights Certificate (and the number of Units of Series A
Preferred Stock which may be purchased upon exercise hereof) set forth above,
and the Purchase Price set forth above, are the number and Purchase Price as of
March 23, 1998 based on the Series A Preferred Stock as constituted at such
date.  As provided in the Rights Agreement, the Purchase Price and the number
of Units of Series A Preferred Stock which may be purchased upon the exercise
of the Rights evidenced by this Rights Certificate are subject to modification
and adjustment upon the happening of certain events.

                 This Rights Certificate is subject to all of the terms,
provisions and conditions of the Rights Agreement, which terms, provisions and
conditions are hereby incorporated herein by reference and made a part hereof
and to which Rights Agreement reference is hereby made for a full description
of the rights, limitations of rights, obligations, duties and immunities
hereunder of the Rights Agent, the Company and the holders of the Rights
Certificates.  Copies of the Rights Agreement are on file at the principal
executive offices of the Company.

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

                 Subject to the provisions of the Rights Agreement, the Rights
evidenced by this Certificate may be redeemed by the Company at a redemption
price of $.001 per Right.

                 No fractional shares of Series A Preferred Stock will be
issued upon the exercise of any Rights or Rights evidenced hereby (other than
fractions which are integral multiples of one one-thousandth of a share of
Series A Preferred Stock, 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 Rights Certificate, as such, shall be
entitled to vote or receive dividends or be deemed for any purpose the holder
of Units of Series A Preferred Stock 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 Rights or Rights
evidenced by this Rights Certificate shall have been exercised as provided in
the Rights Agreement.





                                      B-2
<PAGE>   51

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

                 WITNESS the signature of the proper officers of the Company
and its corporate seal.  Dated as of March___, 1998.




ATTEST:                                       ATL PRODUCTS, INC.



By _______________________________            By _______________________________
Name:  James A. Pipp                          Name:  Kevin C. Daly, Ph.D.
Title: Vice President, Controller             Title: Chairman of the Board,
       and Secretary                                 President and Chief
                                                     Executive Officer




Countersigned:

BANKBOSTON, N.A.
as Rights Agent


By _______________________________
   Authorized Signatory










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

                               FORM OF ASSIGNMENT


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

               FOR VALUE RECEIVED ________________________________ hereby
sells, assigns and transfers unto______________________________________________
_______________________________________________________________________________
                  (Please print name and address of transferee)

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


Dated:  ______________________, ____



                                               ________________________________
                                                          Signature

Signature Guaranteed:

                 Signatures must be guaranteed by a participant in a Securities
Transfer Association Inc. recognized signature guarantee medallion program.












                                       B-4
<PAGE>   53

                                   CERTIFICATE


                 The undersigned hereby certifies that the Rights evidenced by
this Rights 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 Form of Assignment must conform
to the name as written upon the face of this Rights Certificate in every
particular, without alteration or enlargement or any change whatsoever.

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














                                       B-5
<PAGE>   54

                          FORM OF ELECTION TO PURCHASE


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


To ATL PRODUCTS, INC.

               The undersigned hereby irrevocably elects to exercise
___________________________ Rights represented by this Rights Certificate to
purchase the units of Series A Preferred Stock issuable upon the exercise of
such Rights and requests that certificates for such Series A Preferred Stock 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 Rights
Certificate, a new Rights Certificate for the balance remaining of such Rights
shall be registered in the name of and delivered to:

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



Dated:  __________________, ____


                                               ________________________________
                                                          Signature


Signature Guaranteed:

               Signatures must be guaranteed by a participant in a Securities
Transfer Association Inc. recognized signature guarantee medallion program.





                                      B-6
<PAGE>   55
                                  CERTIFICATE


               The undersigned hereby certifies that the Rights evidenced by
this Rights 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 Form of Election to Purchase must
conform to the name as written upon the face of this Rights Certificate in
every particular, without alteration or enlargement or any change whatsoever.

               In the event the certification set forth above in 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
Rights Certificate to be an Acquiring Person or an Affiliate or Associate
thereof (as defined in the Rights Agreement) and such Election to Purchase will
not be honored.













                                       B-7
<PAGE>   56

                                                                       Exhibit C

                               ATL PRODUCTS, INC.

                         SUMMARY OF RIGHTS TO PURCHASE
                       SHARES OF SERIES A PREFERRED STOCK


                 On March 11, 1998, the Board of Directors of ATL Products,
Inc. (the "Company") declared a dividend of one preferred share purchase right
(a "Right") for each outstanding share of Common Stock (the "Common Stock"),
par value $.0001 per share, of the Company.  The dividend is payable on March
23, 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 (a "Unit") of Series A Junior Participating Preferred
Stock, par value $.0001 per share (the "Series A Preferred Stock"), of the
Company at a price of $60.00 per Unit (the "Purchase Price"), subject to
adjustment.  The description and terms of the Rights are set forth in a Rights
Agreement dated as of March 11, 1998 (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") have acquired beneficial ownership of 15% or more of the
outstanding Common Stock or (ii) 10 business days (or such later date as may be
determined by action of the Continuing 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 more of such outstanding Common Stock (the earlier of such
dates being called the "Distribution Date"), the Rights will be evidenced, with
respect to any of the Common Stock certificates outstanding as of the Record
Date, by such Common Stock certificate 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 Stock.
Until the Distribution Date (or earlier redemption or expiration of the
Rights), new Common Stock certificates issued after the Record Date, upon
transfer or new issuance of Common Stock 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 Stock, 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 Stock
represented by such certificate.  As soon as practicable following the
Distribution Date, separate certificates evidencing the Rights ("Rights
Certificates") will be mailed to holders of record of the Common Stock as of
the





                                       C-1
<PAGE>   57

Close of Business on the Distribution Date and such separate Rights
Certificates alone will evidence the Rights.

                 The Rights are not exercisable until the Distribution Date.
The Rights will expire at the close of business on March 23, 2008 (the "Final
Expiration Date"), unless the Final Expiration Date is extended or unless the
Rights are earlier redeemed or exchanged by the Company, in each case as
described below.

                 The Purchase Price payable, and the number of Units of
Preferred Stock 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 Stock, (ii) upon the grant to holders of the
Units of Preferred Stock of certain rights or warrants to subscribe for or
purchase Units of Preferred Stock at a price, or securities convertible into
Units of Preferred Stock with a conversion price, less than the then current
market price of the Units of Preferred Stock or (iii) upon the distribution to
holders of the Units of Preferred Stock of evidences of indebtedness or assets
(excluding regular periodic cash dividends paid out of earnings or retained
earnings or dividends payable in Units of Preferred Stock) or of subscription
rights or warrants (other than those referred to above).

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

                 Units of Preferred Stock purchasable upon exercise of the
Rights will not be redeemable.  Each Unit of Preferred Stock will be entitled
to a dividend equal to any dividend declared per share of Common Stock.  In the
event of liquidation, each Unit of Preferred Stock will be entitled to a
payment equal to any payment made per share of Common Stock.  Each Unit of
Preferred Stock will have one vote, voting together with the Common Stock.
Finally, in the event of any merger, consolidation or other transaction in
which shares of Common Stock are exchanged, each Unit of Preferred Stock will
be entitled to receive an amount equal to the amount received per share of
Common Stock.  These rights are protected by customary antidilution provisions.

                 Because of the nature of the dividend, liquidation and voting
rights, the value of each Unit of Preferred Stock purchasable upon exercise of
the Rights should approximate the value of one share of Common Stock.

                 In the event that, after the Rights become exercisable, the
Company is acquired in a merger or other business combination transaction with
an Acquiring Person or an affiliate thereof, or 50% or more of its consolidated
assets or earning power are sold to an Acquiring Person or an





                                      C-2
<PAGE>   58


affiliate thereof, proper provision will be made so that each holder of a Right
will thereafter have the right to receive, upon exercise thereof at the then
current exercise price of the Rights, 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 Rights.

                 In the event that any person or group of affiliated or
associated persons becomes the beneficial owner of 15% or more of the
outstanding shares of Common Stock proper provision shall be made so that each
holder of a Right, other than Rights beneficially owned by the Acquiring Person
(which will thereafter be void), will thereafter have the right to receive upon
exercise that number of shares of Common Stock or Units of Preferred Stock (or
cash, other securities or property) having a market value of two times the
exercise price of the Rights.

                 At any time after the acquisition by a person or group of
affiliated or associated persons of beneficial ownership of 15% or more of the
outstanding shares of Common Stock and prior to the acquisition by such person
or group of 50% or more of the outstanding Common Stock, the Continuing
Directors of the Company may exchange all or part of the Rights (other than
Rights owned by such person or group which have become void) for Units of
Preferred Stock at an exchange ratio of (subject to adjustment) which shall
equal, subject to adjustment to reflect stock splits, stock dividends and
similar transactions occurring after the date hereof, that number obtained by
dividing the Purchase Price by the then current per share market price per Unit
of Preferred Stock on the earlier of (i) the date on which any Person becomes
an Acquiring Person and (ii) the date on which a tender or exchange offer is
announced by any Person, if upon consummation thereof such Person would be the
Beneficial Owner of 15% or more of the shares of Company Common Stock then
outstanding.

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

                 At any time prior to the Distribution Date, the Board of
Directors of the Company may redeem the Rights in whole, but not in part, at a
price of $.001 per Right (the "Redemption Price"), upon the approval of a
majority of the Continuing Directors.  The redemption of the rights may be made
effective at such time on such basis and with such conditions as the Board of
Directors, upon the approval of the Continuing 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 Rights are also
redeemable under other circumstances as specified in the Rights Agreement.





                                       C-3
<PAGE>   59

                 The terms of the Rights may be amended by the Board of
Directors of the Company, upon the approval of a majority of the Continuing
Directors, without the consent of the holders of the Rights except that from
and after a Distribution Date no such amendment may adversely affect the
interests of the holders of the Rights.

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

                 The Rights have certain anti-takeover effects.  The Rights
will cause substantial dilution to a person or group that attempts to acquire
the Company on terms not approved by the Company's Board of Directors, except
pursuant to an offer conditioned on a substantial number of rights being
acquired.  The Rights should not interfere with any merger or other business
combination approved by the Board of Directors because the Rights may be
redeemed by the Company at the Redemption Price prior to the occurrence of a
Distribution Date.

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














                                       C-4

<PAGE>   1





FOR IMMEDIATE RELEASE

COMPANY CONTACT:

Mark de Raad
Vice President, Finance & CFO
(714) 477-7805
[email protected]



                               ATL PRODUCTS, INC.
                         ADOPTS STOCKHOLDER RIGHTS PLAN

                 IRVINE, CA, March 12, 1998  --  ATL Products, Inc. (NASDAQ:
ATLPA), the leading supplier of automation solutions for networked computers,
today announced that its Board of Directors adopted a Stockholder Rights Plan
in which preferred stock purchase rights will be distributed as a dividend at
the rate of one Right for each share of Common Stock held as of the close of
business on March 23, 1998.

                 The Rights are designed to guard against partial tender offers
and other abusive and coercive tactics that might be used in an attempt to gain
control of the Company without paying all stockholders a fair price for their
shares.  The Rights will not prevent a takeover attempt, but should encourage
anyone seeking to acquire the Company to negotiate with the Board prior to
attempting a takeover.

                 Each Right will entitle Stockholders to buy one one-thousandth
of a share of Series A Junior Participating Preferred Stock of the Company at
an Exercise Price of $60.00.  The Rights will be exercisable only if a person
or group acquires 15% or more of the Company's Common Stock or announces a
tender offer the consummation of which would result in ownership by a person or
group of 15% or more of the Company's Common Stock.

                 If a person or group acquires 15% or more of the Company's
outstanding Common Stock, or a holder of 15% or more of the Company's Common
Stock engages in certain self-dealing transactions or a merger transaction in
which the Company is the surviving corporation and its Common Stock remains
outstanding, then each Right not owned by such person or certain related
parties will entitle its holder to purchase, at the Right's then-current
exercise price, units of the






<PAGE>   2


Company's Series A Preferred Stock (or, in certain circumstances, Company
Common Stock, cash, property or other securities of the Company) having a
market value equal to twice the then-current exercise price.  In addition, if,
after the Rights become exercisable, ATL Products, Inc. is acquired in a merger
or other business combination transaction, or sells 50% or more of its assets
or earnings power, each Right will entitle its holder to purchase, at the
Right's then-current price, a number of the acquiring company's common shares
having a market value at the time of twice the Right's exercise price.

                 At any time on or prior to the close of business on the
earlier or (i) ten days after the first date of a public announcement that a
person or group has acquired beneficial ownership of 15% or more of the
Company's Common Stock and (ii) ten business days (or such later date as may be
determined by the Board) after a person or group commences or announces the
intention to commence a tender offer or exchange offer for 15% or more of the
Company's shares, the Rights are redeemable for $.001 per Right at the option
of the Board of Directors.

                 The dividend distribution will be made on March 23, 1998
payable to stockholders of record on that date.  The Rights will expire on May
23, 2008. The initial distribution of Rights is not taxable to stockholders.

COMPANY BACKGROUND:

                 ATL is recognized worldwide as a market innovator in design,
manufacturing and service of automated DLT library systems having earned a
reputation for superb quality and reliability.  Delivering library systems
through OEMs and a worldwide network of authorized resellers, ATL ships a large
percentage of the world's DLT libraries.  The DLT market is growing rapidly and
ATL is at the forefront with systems currently installed in more than 4,000
locations worldwide--including almost half of the Fortune 100 companies.

                 Serving the world market for storage automation, corporate
headquarters for ATL Products is in Irvine, California.  At the site is the
world's largest manufacturing facility dedicated to DLT automation.  Sales and
service are provided throughout major cities in North America, Europe and Asia.
For additional information, call ATL Products at (714) 774-6900, or browse the
Company's website at www/atlp.com.


DLT is a claimed trademark of Quantum Corporation in the United States and
other countries.

This news release contains statements which may be deemed to be forward
looking.  The actual results of ATL may differ materially and will depend on
its performance which could be adversely affected by such factors as unexpected
shortages of critical components, short product lives, the timing and market
acceptance of planned new product introductions, competition (including new and
directly competitive products from others), and the significant uncertainty of
market acceptance of new products by both distribution channels and end-user
customers.

For a discussion of such factors, see Risk Factors and Management's Discussion
and Analysis of Financial Condition and Results of Operations in ATL's most
recent Form 10-K (Commission File No. 000-22037).







<PAGE>   1
                       [Letterhead of ATL Products, Inc.]


                                March 23, 1998


To Our Stockholders:

                 On March 11, 1998, your Board of Directors declared a dividend
distribution of Preferred Stock Purchase Rights (the "Rights").  The Rights
were issued on March 23, 1998 to stockholders of record on that date and will
expire in ten years.  This letter and its attachment summarize certain key
features of the Stockholder Rights Plan and the Board of Directors' reasons for
adopting it.  These documents should be kept with your Common Stock
Certificates.

                 The Rights contain provisions that should, along with certain
charter and by-law provisions and certain provisions of the Delaware General
Corporation Law, help protect the stockholders of ATL Products, Inc. (the
"Company") in the event of an unsolicited attempt to acquire the Company,
including a gradual accumulation of shares in the open market, a partial or
two-tier tender offer that does not treat all stockholders equally, a
squeeze-out merger and other coercive or unfair takeover tactics.  These
tactics can unfairly pressure stockholders, squeeze them out of their
investment without giving them any real choice and deprive them of the full
value of their shares, and the Board of Directors does not believe they are in
the best interests of the Company's stockholders.

                 Over 1,700 companies, including approximately half the Fortune
500 companies and two-thirds of the Fortune 200 companies, have issued similar
rights to protect their stockholders against these tactics.  We consider the
Rights to be very valuable in protecting both your right to retain your equity
investment in the Company and the full value of that investment, while not
foreclosing a fair acquisition bid for the Company.

                 Your Board of Directors was aware when it acted that some
people have advanced arguments that securities of the sort we are issuing deter
legitimate acquisition proposals.  We carefully considered these views and
concluded that the arguments are speculative and do not justify leaving
stockholders without any protection during the coming years.  Your Board of
Directors believes that these Rights represent a sound and reasonable means of
addressing the complex issues of corporate policy.






<PAGE>   2

To Our Stockholders                                                      Page 2
March 23, 1998

                 The Rights are not intended to prevent an acquisition of the
Company and will not do so.  However, they should deter any attempt to acquire
the Company in a manner or on terms not approved by the Board of Directors.
The Rights may be redeemed by the Board of Directors at a price of $0.001 per
Right prior to the earlier of (i) ten days after the first public announcement
of the accumulation, through open-market purchases, a tender offer or
otherwise, of 15% or more of the combined number of the Company's shares of
Common Stock by a single acquiror or group and (ii) ten business days (or such
later date as may be determined by the Board) after a person or group commences
or announces the intention to commence a tender offer or exchange offer for 15%
or more of the Company's shares.  Thus, the Rights should not interfere with
any merger or business combination approved by the Board of Directors prior to
that time.

                 Issuance of the Rights does not in any way weaken the
financial strength of the Company or interfere with its business plans.  The
issuance of the Rights has no dilutive effect, will not affect reported
earnings per share and will not change the way in which you can presently trade
the Company's shares.

                 The Rights will expire March 23, 2008, which should give the
Company adequate time to determine whether any further protection is required.

                 The Board of Directors has been advised by legal counsel for
the Company that the distribution of the Rights will not be taxable to you or
to the Company.  However, stockholders may recognize taxable income upon the
occurrence of certain subsequent taxable events.

                 In declaring the Rights dividend, we have expressed our
confidence in the future of the Company and our determination that you, our
stockholders, be given every opportunity to participate in that future.

                                               On behalf of the
                                               Board of Directors


                                               Kevin C. Daly, Ph.D.
                                               Chairman of the Board, President
                                               and Chief Executive Officer






<PAGE>   3

                                                                          Page 3



                                   ATTACHMENT

                               ATL PRODUCTS, INC.

                         SUMMARY OF RIGHTS TO PURCHASE
                       SHARES OF SERIES A PREFERRED STOCK


                 On March 11, 1998, the Board of Directors of ATL Products,
Inc. (the "Company") declared a dividend of one preferred share purchase right
(a "Right") for each outstanding share of Common Stock (the "Common Stock"),
par value $.0001 per share, of the Company.  The dividend is payable on March
23, 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 (a "Unit") of Series A Junior Participating Preferred
Stock, par value $.0001 per share (the "Series A Preferred Stock"), of the
Company at a price of $60.00 per Unit (the "Purchase Price"), subject to
adjustment.  The description and terms of the Rights are set forth in a Rights
Agreement dated as of March 11, 1998 (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") have acquired beneficial ownership of 15% or more of the
outstanding Common Stock or (ii) 10 business days (or such later date as may be
determined by action of the Continuing 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 more of such outstanding Common Stock (the earlier of such
dates being called the "Distribution Date"), the Rights will be evidenced, with
respect to any of the Common Stock certificates outstanding as of the Record
Date, by such Common Stock certificate 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 Stock.
Until the Distribution Date (or earlier redemption or expiration of the
Rights), new Common Stock certificates issued after the Record Date, upon
transfer or new issuance of Common Stock 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 Stock, 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 Stock
represented by such certificate.  As soon as practicable following the
Distribution Date, separate certificates evidencing the Rights ("Rights
Certificates") will be mailed to holders of record of the Common Stock as of
the Close of Business on the Distribution Date and such separate Rights
Certificates alone will evidence the Rights.






<PAGE>   4

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                 The Rights are not exercisable until the Distribution Date.
The Rights will expire at the close of business on March 23, 2008 (the "Final
Expiration Date"), unless the Final Expiration Date is extended or unless the
Rights are earlier redeemed or exchanged by the Company, in each case as
described below.

                 The Purchase Price payable, and the number of Units of
Preferred Stock 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 Stock, (ii) upon the grant to holders of the
Units of Preferred Stock of certain rights or warrants to subscribe for or
purchase Units of Preferred Stock at a price, or securities convertible into
Units of Preferred Stock with a conversion price, less than the then current
market price of the Units of Preferred Stock or (iii) upon the distribution to
holders of the Units of Preferred Stock of evidences of indebtedness or assets
(excluding regular periodic cash dividends paid out of earnings or retained
earnings or dividends payable in Units of Preferred Stock) or of subscription
rights or warrants (other than those referred to above).

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

                 Units of Preferred Stock purchasable upon exercise of the
Rights will not be redeemable.  Each Unit of Preferred Stock will be entitled
to a dividend equal to any dividend declared per share of Common Stock.  In the
event of liquidation, each Unit of Preferred Stock will be entitled to a
payment equal to any payment made per share of Common Stock.  Each Unit of
Preferred Stock will have one vote, voting together with the Common Stock.
Finally, in the event of any merger, consolidation or other transaction in
which shares of Common Stock are exchanged, each Unit of Preferred Stock will
be entitled to receive an amount equal to the amount received per share of
Common Stock.  These rights are protected by customary antidilution provisions.

                 Because of the nature of the dividend, liquidation and voting
rights, the value of each Unit of Preferred Stock purchasable upon exercise of
the Rights should approximate the value of one share of Common Stock.

                 In the event that, after the Rights become exercisable, the
Company is acquired in a merger or other business combination transaction with
an Acquiring Person or an affiliate thereof, or 50% or more of its consolidated
assets or earning power are sold to an Acquiring Person or an affiliate
thereof, proper provision will be made so that each holder of a Right will
thereafter have the right to receive, upon exercise thereof at the then current
exercise price of the






<PAGE>   5
               
                                                                          Page 5



Rights, 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 Rights.

                 In the event that any person or group of affiliated or
associated persons becomes the beneficial owner of 15% or more of the
outstanding shares of Common Stock proper provision shall be made so that each
holder of a Right, other than Rights beneficially owned by the Acquiring Person
(which will thereafter be void), will thereafter have the right to receive upon
exercise that number of shares of Common Stock or Units of Preferred Stock (or
cash, other securities or property) having a market value of two times the
exercise price of the Rights.

                 At any time after the acquisition by a person or group of
affiliated or associated persons of beneficial ownership of 15% or more of the
outstanding shares of Common Stock and prior to the acquisition by such person
or group of 50% or more of the outstanding Common Stock, the Continuing
Directors of the Company may exchange all or part of the Rights (other than
Rights owned by such person or group which have become void) for Units of
Preferred Stock at an exchange ratio of (subject to adjustment) which shall
equal, subject to adjustment to reflect stock splits, stock dividends and
similar transactions occurring after the date hereof, that number obtained by
dividing the Purchase Price by the then current per share market price per Unit
of Preferred Stock on the earlier of (i) the date on which any Person becomes
an Acquiring Person and (ii) the date on which a tender or exchange offer is
announced by any Person, if upon consummation thereof such Person would be the
Beneficial Owner of 15% or more of the shares of Company Common Stock then
outstanding.

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

                 At any time prior to the Distribution Date, the Board of
Directors of the Company may redeem the Rights in whole, but not in part, at a
price of $.001 per Right (the "Redemption Price"), upon the approval of a
majority of the Continuing Directors.  The redemption of the rights may be made
effective at such time on such basis and with such conditions as the Board of
Directors, upon the approval of the Continuing 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 Rights are also
redeemable under other circumstances as specified in the Rights Agreement.

                 The terms of the Rights may be amended by the Board of
Directors of the Company, upon the approval of a majority of the Continuing
Directors, without the consent of the






<PAGE>   6

                                                                          Page 6




holders of the Rights except that from and after a Distribution Date no such
amendment may adversely affect the interests of the holders of the Rights.

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

                 The Rights have certain anti-takeover effects.  The Rights
will cause substantial dilution to a person or group that attempts to acquire
the Company on terms not approved by the Company's Board of Directors, except
pursuant to an offer conditioned on a substantial number of rights being
acquired.  The Rights should not interfere with any merger or other business
combination approved by the Board of Directors because the Rights may be
redeemed by the Company at the Redemption Price prior to the occurrence of a
Distribution Date.

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








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