NETWORK ASSOCIATES INC
S-3, 1998-05-06
PREPACKAGED SOFTWARE
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<PAGE>   1
As filed with the Securities and Exchange Commission on May 6, 1998
                                                 Registration No. 333-
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

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

                                    FORM S-3
                             REGISTRATION STATEMENT
                                      UNDER
                           THE SECURITIES ACT OF 1933

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

                            NETWORKS ASSOCIATES, INC.
                       (FORMERLY MCAFEE ASSOCIATES, INC.)
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

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

              DELAWARE                                    77-0316593
  (STATE OR OTHER JURISDICTION OF                      (I.R.S. EMPLOYER
   INCORPORATION OR ORGANIZATION)                    IDENTIFICATION NUMBER)

                               3965 FREEDOM CIRCLE
                          SANTA CLARA, CALIFORNIA 95054
                                 (408) 988-3832
  (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER, INCLUDING AREA CODE, OF
                   REGISTRANT'S PRINCIPAL EXECUTIVE OFFICES)

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

                                WILLIAM L. LARSON
                             CHIEF EXECUTIVE OFFICER
                            NETWORKS ASSOCIATES, INC.
                               3965 FREEDOM CIRCLE
                          SANTA CLARA, CALIFORNIA 95054
                                 (408) 988-3832
            (NAME, ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER,
                   INCLUDING AREA CODE, OF AGENT FOR SERVICE)

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

                                   Copies to:
                             JEFFREY D. SAPER, ESQ.
                              KURT J. BERNEY, ESQ.
                        WILSON SONSINI GOODRICH & ROSATI
                            PROFESSIONAL CORPORATION
                               650 PAGE MILL ROAD
                               PALO ALTO, CA 94304
                             ----------------------

        APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC:
  As soon as practicable after this Registration Statement becomes effective.

    If the only securities being registered on this Form are offered pursuant to
dividend or interest reinvestment plans, check the following box. [ ]

    If any of the securities being registered on this Form are to be offered on
a delayed or continuous basis pursuant to Rule 415 under the Securities Act of
1933, other than securities offered only in connection with dividend or interest
reinvestment plans, check the following box. [X]

    If this Form is filed to register additional securities for an offering
pursuant to Rule 462(b) under the Securities Act, please check the following box
and list the Securities Act registration statement number of the earlier
effective registration statement for the same offering. [ ]

    If this Form is a post-effective amendment filed pursuant to Rule 462(c)
under the Securities Act, check the following box and list the Securities Act
registration statement number of the earlier effective registration statement
for the same offering. [ ]

    If delivery of the prospectus is expected to be made pursuant to Rule 434,
please check the following box. [ ]

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

                         CALCULATION OF REGISTRATION FEE

<TABLE>
<CAPTION>
====================================================================================================================================
                                                                                   PROPOSED            PROPOSED
                                                                                   MAXIMUM              MAXIMUM
              TITLE OF EACH CLASS                           AMOUNT                 OFFERING            AGGREGATE       AMOUNT OF
               OF SECURITIES TO                              TO BE                  PRICE              OFFERING       REGISTRATION
                 BE REGISTERED                            REGISTERED           PER SECURITY (1)        PRICE (1)          FEE
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                                                  <C>                       <C>                   <C>              <C>       
Zero Coupon Convertible Subordinated                                                                                        
  Debentures due 2018..........................          $885,500,000                 100%            $885,500,000      $261,222.50
Common Stock $0.01 par value (2)...............       5,040,266 shares (2)            $ --              $       --       $    -- 
====================================================================================================================================
</TABLE>

(1) Estimated solely for the purpose of calculating the registration fee
    pursuant to Rule 457(i) under the Securities Act of 1933, as amended.
<PAGE>   2

(2) Such number represents the number of shares of Common Stock as are initially
    issuable upon conversion of the Zero Coupon Convertible Subordinated
    Debentures due 2018 registered hereby and, pursuant to Rule 416 under the
    Securities Act of 1933 as amended, such indeterminate number of shares of
    Common Stock as may be issued from time to time upon conversion of the Notes
    as a result of the antidilution provisions thereof. Pursuant to Rule 457(i),
    no registration fee is required for these shares.

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

    The Registrant hereby amends this Registration Statement on such date or
dates as may be necessary to delay its effective date until the Registrant
shall file a further amendment which specifically states that this Registration
Statement shall thereafter become effective in accordance with Section 8(a)
of the Securities Act of 1933 or until the Registration Statement shall become
effective on such date as the Commission, acting pursuant to said Section 8(a),
may determine.

================================================================================

<PAGE>   3

Information contained herein is subject to completion or amendment. A
registration statement relating to these securities has been filed with the
Securities and Exchange Commission. These securities may not be sold nor may
offers to buy be accepted prior to the time the registration statement becomes
effective. This prospectus shall not constitute an offer to sell or the
solicitation of an offer to buy nor shall there be any sale of these securities
in any State in which such offer, solicitation or sale would be unlawful prior
to the registration or qualification under the securities laws of any such
State.

        THE INFORMATION CONTAINED HEREIN IS SUBJECT TO COMPLETION OR AMENDMENT.
A REGISTRATION STATEMENT RELATING TO THESE SECURITIES HAS BEEN FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION. THESE SECURITIES MAY NOT BE SOLD NOR MAY AN
OFFER TO BUY BE ACCEPTED PRIOR TO THE TIME THE REGISTRATION STATEMENT BECOMES
EFFECTIVE. THIS PROSPECTUS SHALL NOT CONSTITUTE AN OFFER TO SELL OR THE
SOLICITATION OF AN OFFER TO BUY, NOR SHALL THERE BE ANY SALE OF THESE SECURITIES
IN ANY STATE IN WHICH SUCH OFFER, SOLICITATION OR SALE WOULD BE UNLAWFUL PRIOR
TO REGISTRATION OR QUALIFICATION UNDER THE SECURITIES LAWS OF ANY SUCH STATE.

                    SUBJECT TO COMPLETION, DATED MAY 6, 1998

                                  $885,500,000

                            NETWORKS ASSOCIATES, INC.

            ZERO COUPON CONVERTIBLE SUBORDINATED DEBENTURES DUE 2018
           AND SHARES OF COMMON STOCK ISSUABLE UPON CONVERSION THEREOF

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

        This Prospectus relates to $885,500,000 aggregate principal amount at
maturity of Zero Coupon Convertible Subordinated Debentures due 2018 (the
"Debentures") of Networks Associates, Inc. (the "Company") and the shares of
Common Stock, par value $.01 per share (the "Common Stock"), of the Company
issuable upon the conversion of the Debentures (the "Conversion Shares"). The
Debentures and the Conversion Shares may be offered from time to time for the
accounts of the holders named herein (each a "Selling Securityholder").

        The Debentures are convertible at the option of the holder into shares
of Common Stock of the Company, unless previously redeemed or repurchased, at
any time prior to maturity, at a conversion rate of approximately 5.692 shares
of Common Stock per $1,000 principal amount of Debentures, subject to adjustment
under certain circumstances.

        The Debentures are unsecured general obligations of the Company and are
subordinated in right of payment to all existing and future Senior Indebtedness
(as defined). See "Description of Debentures -- Subordination." The Debentures
will mature on 2018, and may be redeemed, at the option of the Company, in whole
or in part, at any time on or after February 13, 2003 at the redemption prices
set forth in this Prospectus. See "Description of Debentures -- Redemption
- --Optional Redemption." In the event of a Fundamental Change (as defined), each
Holder of Debentures may require the Company to repurchase its Debentures at the
repurchase prices set forth in this Prospectus. See "Description of Debentures
- -- Repurchase at Option of Holders Upon a Fundamental Change."

        The Debentures and the Conversion Shares may be offered by the Selling
Securityholders from time to time in transactions (which may include block
transactions in the case of the Conversion Shares) on any exchange or market on
which such securities are listed or quoted, as applicable, in negotiated
transactions, through a combination of such methods of sale, or otherwise, at
fixed prices that may be changed, at market prices prevailing at the time of
sale, at prices related to prevailing market prices or at negotiated prices. The
Selling Securityholders may effect such transactions by selling the Debentures
or Conversion Shares directly or to or through broker-dealers, who may receive
compensation in the form of discounts, concessions or commissions from the
Selling Securityholders and/or the purchasers of the Debentures or Conversion
Shares for whom such broker-dealers may act as agents or to whom they may sell
as principals, or both (which compensation as to a particular broker-dealer
might be in excess of customary commissions). The Company will not receive any
of the proceeds from the sale of the Debentures or Conversion Shares by the
Selling Securityholders. The Company has agreed to pay all expenses incident to
the offer and sale of the Debentures and Conversion Shares offered by the
Selling Securityholders hereby, except that the Selling Securityholders will pay
all underwriting discounts and selling commissions, if any. See "Plan of
Distribution."

        The Debentures have been designated for trading on the Portal Market.
Debentures sold pursuant to this Prospectus will not remain eligible for trading
on the Portal Market. The Common Stock is traded on the Nasdaq National Market
under the symbol "NETA."
                             ----------------------

          THE DEBENTURES AND THE COMMON STOCK OFFERED HEREBY INVOLVE A
          HIGH DEGREE OF RISK. SEE "RISK FACTORS" BEGINNING ON PAGE 7.

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

    THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES
     AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE
      SECURITIES AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION
          PASSED UPON THE ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY
              REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE.

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

                  The date of this Prospectus is May 6, 1998

<PAGE>   4

                                   TRADEMARKS

        This Prospectus contains trademarks of the Company, including CyberCop,
McAfee, McAfee Total Service Desk, McAfee Total Virus Defense, Net Tools, PGP,
PGP Total Network Security, Sniffer and Sniffer Total Network Visibility.
This Prospectus may contain trademarks of others.

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

                    MCAFEE ASSOCIATES/NETWORK GENERAL MERGER

        On December 1, 1997, McAfee Associates, Inc. ("McAfee") and Network
General Corporation ("Network General") consummated a strategic business
combination (the "Network General Merger") through the merger of a wholly-owned
subsidiary of McAfee with and into Network General. The Network General Merger
was accounted for as a pooling of interests. In connection with the Network
General Merger, McAfee changed its name to "Networks Associates, Inc." and has
since conducted business using the name "Network Associates, Inc.," marketing
products using, among other names, Network Associates, McAfee and Network
General.

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

                              AVAILABLE INFORMATION

        The Company is subject to the informational requirements of the Exchange
Act, and in accordance therewith, files, reports, proxy statements and other
information with the Securities and Exchange Commission (the "Commission"). Such
reports, proxy statements and other information filed with the Commission by the
Company can be inspected and copied at the public reference facilities
maintained by the Commission at 450 Fifth Street, N.W., Washington, D.C. 20549,
and at the Commission's regional offices located at 500 West Madison Street,
Room 1400, Chicago, Illinois 60661 and at 7 World Trade Center, Suite 1300, New
York, New York 10048. Copies of such material can be obtained from the Public
Reference Section of the Commission at 450 Fifth Street, Washington, D.C. 20549,
at prescribed rates, or on the World Wide Web at http://www.sec.gov. Copies of
other materials concerning the Company can be inspected at the offices of the
National Association of Securities Dealers, Inc. at 1735 K Street, N.W.,
Washington, D.C. 20006.

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

The Company:

                          INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

        The following documents filed by the Company (formerly McAfee
Associates, Inc.) with the Commission (File No. 000-20558) pursuant to the
Exchange Act are incorporated by reference in this Prospectus:

        1.     The Company's Annual Report on Form 10-K for the year ended
               December 31, 1997;

        2.     The Company's Current Reports on Form 8-K filed on February 10,
               1998, February 12, 1998, February 25, 1998, March 25, 1998 and
               April 3, 1998;

        3.     The Company's registration statement on Form S-4 filed with the
               Commission on March 25, 1998; and

        4.     The description of the Company's Common Stock contained in its
               Registration Statement on Form 8-A filed on August 21, 1992,
               including any amendments or reports filed for the purpose of
               updating such description.

        All documents filed by the Company pursuant to Sections 13(a), 13(c), 14
or 15(d) of the Exchange Act subsequent to the date of this Prospectus but prior
to the termination of the offering to which this Prospectus relates shall be
deemed to
<PAGE>   5
be incorporated by reference in this Prospectus and to be part hereof from the
date of filing of such documents. Any statement contained in a document
incorporated by reference herein shall be deemed to be modified or superseded
for purposes of this Prospectus to the extent that a statement contained herein
or in any other subsequently filed document which also is incorporated herein
modifies or supersedes such statement. Any statement so modified or superseded
shall not be deemed, in its unmodified form, to constitute a part of this
Prospectus.

        Upon written or oral request, the Company will provide without charge to
each person to whom a copy of this Prospectus is delivered a copy of any of the
documents incorporated by reference herein (other than exhibits to such
documents unless such exhibits are specifically incorporated by reference into
such documents). Requests for such documents should be submitted to Prabhat K.
Goyal, Secretary, at the principal executive offices of the Company in writing
at Network Associates, Inc., 3965 Freedom Circle, Santa Clara, California 95054
or by telephone at (408) 988-3832.

                           FORWARD-LOOKING STATEMENTS

        This Prospectus, including the documents incorporated by reference
herein, contains forward-looking statements that involve risks and
uncertainties. The statements contained in this Prospectus or incorporated by
reference herein that are not purely historical are forward-looking statements
within the meaning of Section 27A of the Securities Act and Section 21E of the
Exchange Act, including without limitation statements regarding the Company's
expectations, beliefs, intentions or strategies regarding the future. All
forward-looking statements included in this document or incorporated by
reference herein are based on information available to the Company on the date
hereof, and the Company assumes no obligation to update any such forward-looking
statements. The Company's actual results could differ materially from those
anticipated in these forward-looking statements as a result of certain factors,
including those set forth in "Risk Factors" and elsewhere in this Prospectus.

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

        Except as otherwise indicated, all references to the "Company" or
"Network Associates" refer to Networks Associates, Inc. (formerly McAfee
Associates, Inc.) and its wholly-owned subsidiaries, unless the context
otherwise requires.


                                       -2-

<PAGE>   6

                                   THE COMPANY

        The Company is a leading developer and provider of network security and
management software products. The Company has historically derived a significant
majority of its revenues from the licensing of its flagship McAfee anti-virus
products and Sniffer network fault and performance management products. The
Company is currently focusing its efforts on broadening its revenue base by
providing network security and management solutions to enterprise customers,
targeting in particular the Windows NT/Intel platform. In furtherance of this
strategy, the Company recently organized its products into four product suites
- -- McAfee Total Virus Defense and PGP Total Network Security (together
comprising "Net Tools Secure") and Sniffer Total Network Visibility and McAfee
Total Service Desk (together comprising "Net Tools Manager"). These four product
suites together form an integrated solution called "Net Tools".

        The following table depicts the Company's product suites:

<TABLE>
<CAPTION>
                                         NET TOOLS
- ---------------------------------------------------------------------------------------------
             NET TOOLS SECURE                                 NET TOOLS MANAGER
- -------------------------------------------     ---------------------------------------------
<S>                      <C>                    <C>                      <C>
McAfee Total Virus       PGP Total Network      Sniffer Total Network    McAfee Total Service
     Defense                 Security                Visibility                  Desk
</TABLE>

        Net Tools Secure is designed to protect the enterprise from viruses,
hackers, thefts, lost data and threats to data security at all points of entry.
McAfee Total Virus Defense is a multi-tiered approach to virus protection
covering the client, server and Internet gateway; and PGP Total Network Security
combines security products with desktop encryption software and key management
tools. Net Tools Manager is a network management and service desk solution
designed to make computer networks more efficient and users more productive.
Sniffer Total Network Visibility is a comprehensive set of products and services
for network fault and performance management (also known as analysis and
monitoring); and McAfee Total Service Desk is designed to integrate robust help
desk applications with asset management software. The Company also provides
product support, education and consulting services.

        Many of the Company's network security and management products,
including its industry-leading network security products for anti-virus
protection and Sniffer software-based fault and performance solutions for
managing computer networks, are also available as stand-alone products or as
part of smaller product suites. The Company is also a leader in electronic
software distribution, which is the principal means by which it markets its
products and one of the principal ways it distributes its software products to
its customers. The Company generally utilizes a two-year subscription model for
licensing its non-Sniffer products to corporate clients and is in the process of
developing a two-year subscription model for licensing its Sniffer products as
well.

        The Company is a Delaware corporation incorporated in August 1992. The
Company's principal executive offices are located at 3965 Freedom Circle, Santa
Clara, California 95054. Its telephone number at that address is (408) 988-3832.

                               RECENT DEVELOPMENTS

ACQUISITIONS

        On April 28, 1998, the Company acquired Trusted Information Systems, 
Inc. ("TIS"), a publicly held provider of comprehensive security solutions for
the protection of computer networks, including global Internet-based systems,
internal networks and individual workstations and laptops, as well as firewall
and intrusion detection products. In the acquisition, a wholly owned subsidiary
of the Company merged with and into TIS; TIS became a wholly owned subsidiary of
the Company; each outstanding share of TIS Common Stock converted into the right
to receive 0.323 of a share of Company Common Stock. 

                                       -3-

<PAGE>   7
The TIS acquisition broadened the Company's suite of network security
products. The TIS acquisition was qualified as a pooling of interests
for financial reporting purposes in accordance with generally accepted
accounting principles.

        On April 1, 1998, the Company acquired Magic Solutions International,
Inc. ("Magic Solutions"), a privately held provider of internal help desk and
asset management solutions. In the acquisition, a wholly owned subsidiary of the
Company merged with and into Magic Solutions; Magic Solutions became a wholly
owned subsidiary of the Company; and the existing Magic Solutions stock and
option holders received approximately $110,000,000 in cash. The Magic Solutions
acquisition broadened the Company's suite of help desk product offerings. The
Magic Solutions acquisition is accounted for as a purchase and the Company
currently expects to incur during the second quarter of 1998 a charge to
earnings related to purchased in-process research and development of
approximately $90 million.

        Each of the Magic Solutions acquisition and the TIS acquisition are 
subject to a number of risks, including the difficulties of assimilating the two
company's sales forces, product offerings, marketing activities, research and
development efforts and technologies. These difficulties may be compounded in
light of the integration activities surrounding multiple acquisitions.

COMMON STOCK SPLIT

        On April 30, 1998, the Company's Board of Directors announced a 3-for-2
Common Stock Split (the "3-for-2 Stock Split"). The 3-for-2 Stock Split will be
effected through a stock dividend pursuant to which stockholders of record as of
the close of business on May 12, 1998, will be entitled to receive as a dividend
one share of Company Common Stock for every two shares of Company Common Stock
owned by them (with cash being paid in lieu of fractional shares after
aggregating all shares owned by such stockholder). Unless otherwise indicated,
references herein to numbers of shares do not give effect to the 3-for-2 Stock
Split and the related stock dividend which is expected to be paid on or about
May 29, 1998.


                                       -4-

<PAGE>   8

                                  THE OFFERING

<TABLE>
<S>                                <C>                                                                 
Securities Offered                 $885,500,000 principal amount at maturity of Zero Coupon Convertible
                                   Subordinated Debentures due 2018 (the "Debentures"). There are no periodic
                                   interest payments on the Debentures. See "Description of Debentures --
                                   General."

Yield to Maturity of               4.75% per annum (computed on a semi-annual bond equivalent basis)
Debentures                         calculated from February 13, 1998.

Conversion                         The Debentures are convertible, at the option of the holder, at any time after
                                   90 days following the latest date of original issuance thereof and prior to
                                   maturity, unless previously redeemed or otherwise purchased by the Company,
                                   into Common Stock at the rate of 5.692 shares per $1,000 principal amount at
                                   maturity of the Debentures (the "Conversion Rate"). The Conversion Rate is
                                   not adjusted for accrued Original Issue Discount (as defined), but is subject to
                                   adjustment upon the occurrence of certain events. Upon conversion, the holder
                                   will not receive any cash payment representing accrued Original Issue
                                   Discount; such accrued Original Issue Discount is deemed paid by the
                                   Common Stock received upon conversion. See "Description of Debentures --
                                   Conversion of Debentures."

Subordination                      The Debentures are subordinated in right of payment to all existing and future
                                   Senior Indebtedness (as defined) of the Company and effectively subordinated
                                   in right of payment to all indebtedness and other liabilities of the Company's
                                   subsidiaries. At December 31, 1997, the Company had no indebtedness
                                   outstanding that would have constituted Senior Indebtedness, and the
                                   Company's subsidiaries had approximately $98 million of indebtedness and
                                   other liabilities outstanding (excluding intercompany liabilities and liabilities
                                   of a type not required to be reflected on a balance sheet in accordance with
                                   generally accepted accounting principles) to which the Debentures would have
                                   been effectively subordinated. See "Description of Debentures --
                                   Subordination of Debentures."

Original Issue Discount            The Debentures are offered at an Original Issue Discount for Federal income
                                   tax purposes equal to the excess of the principal amount at maturity of the
                                   Debenture over the amount of its Issue Price. Prospective purchasers of
                                   Debentures should be aware that, although there are no periodic payments of
                                   interest on the Debentures, accrued Original Issue Discount is included
                                   periodically in a holder's gross income for Federal income tax purposes prior
                                   to conversion, redemption, other disposition or maturity of such holder's
                                   Debentures, whether or not such Debentures are ultimately converted,
                                   redeemed, sold (to the Company or otherwise) or paid at maturity. See "Certain
                                   Federal Income Tax Considerations."

Sinking Fund                       None.
</TABLE>


                                      -5-

<PAGE>   9

<TABLE>
<S>                                <C>                                                                 
Redemption                         The Debentures are not redeemable by the Company prior to February 13,
                                   2003. Thereafter, the Debentures are redeemable for cash, at the option of the
                                   Company, in whole at any time or in part from time to time, at Redemption
                                   Prices equal to the Issue Price plus accrued Original Issue Discount to the date
                                   of redemption. See "Description of Debentures -- Redemption of Debentures
                                   at the Option of the Company."

Fundamental Change                 The Debentures may be redeemed at the option of the holder if there is a
                                   Fundamental Change (as defined) at a Fundamental Change Redemption Price
                                   equal to the Issue Price plus accrued Original Issue Discount to the date of
                                   redemption, subject to adjustment in certain circumstances. See "Description
                                   of Debentures -- Redemption at Option of the Holder Upon a Fundamental
                                   Change."

Purchase at the Option of
the Holder                         The Company will purchase Debentures at the option of the holder as of
                                   February 13, 2003, February 13, 2008 and February 13, 2013 at Purchase
                                   Prices equal to the Issue Price plus accrued Original Issue Discount to such
                                   dates. The Company may, at its option, elect to pay any such Purchase Price
                                   in cash or Common Stock, or any combination thereof. See "Description of
                                   Debentures -- Purchase of Debentures at the Option of the Holder."

Use of Proceeds                    The Company will not receive any of the proceeds from the sale by the Selling
                                   Securityholders of the Debentures or the Conversion Shares.
</TABLE>


                                       -6-

<PAGE>   10

                                  RISK FACTORS

        This Prospectus, including the documents incorporated by reference
herein, contains forward-looking statements that involve risks and
uncertainties. The statements contained in this Prospectus or incorporated by
reference herein that are not purely historical are forward-looking statements
within the meaning of Section 27A of the Securities Act and Section 21E of the
Exchange Act, including without limitation statements regarding the Company's
expectations, beliefs, intentions or strategies regarding the future. All
forward-looking statements included in this document or incorporated by
reference herein are based on information available to the Company on the date
hereof, and the Company assumes no obligation to update any such forward-looking
statements. The Company's actual results could differ materially from those
anticipated in these forward-looking statements as a result of certain factors,
including those set forth in "Risk Factors" and elsewhere in this Prospectus.

        Variability of Quarterly Operating Results. The Company's results of
operations have been subject to significant fluctuations, particularly on a
quarterly basis, and the Company's future results of operations could fluctuate
significantly from quarter to quarter and from year to year. Causes of such
fluctuations may include the volume and timing of new orders and renewals,
distributor inventory levels and return rates, Company inventory levels, the
introduction of new products, product upgrades or updates by the Company or its
competitors, changes in product mix, changes in product prices and pricing
models, seasonality, trends in the computer industry, general economic
conditions (such as the recent economic turbulence in Asia), extraordinary
events such as acquisitions or litigation and the occurrence of unexpected
events. The operating results of many software companies reflect seasonal
trends, and the Company's business, financial condition and results of
operations may be affected by such trends in the future. Such trends may include
higher net revenue in the fourth quarter as many customers complete annual
budgetary cycles, and lower net revenue in the summer months when many
businesses experience lower sales, particularly in the European market.

        Although the Company has experienced significant growth in net revenue
and net income (before acquisition and other related costs) in absolute terms,
the Company's growth rate has slowed in recent periods. The Company has
experienced increased price competition for its products and the Company expects
competition to increase in the near-term, which may result in reduced average
selling prices for the Company's products. Due to these and other factors (such
as a maturing anti-virus market and an increasingly higher base from which to
grow), the Company's historic revenue growth rate is difficult to sustain or
increase. To the extent these trends continue, the Company's results of
operations could be materially adversely affected. Renewals have historically
accounted for a significant portion of the Company's net revenue; however, there
can be no assurance that the Company will be able to sustain historic renewal
rates for its products in the future. Risks related to the Company's recent
change in business strategies could also cause fluctuations in operating results
and could make comparisons with historic operating results and balances
difficult or not meaningful. See "-- Risks Related to Certain Business
Strategies."

        The timing and amount of the Company's revenues are subject to a number
of factors that make estimating operating results prior to the end of a quarter
uncertain. The Company does not expect to maintain a significant level of
backlog and, as a result, product revenues in any quarter are dependent on
contracts entered into or orders booked and shipped in that quarter. During
1997, the Company generally experienced a trend toward higher order receipts
toward the end of the last month of a quarter, resulting in a higher percentage
of revenue shipments during the last month of a quarter than in 1996, which
makes predicting revenues more difficult. The timing of closing larger orders
increases the risks of quarter-to-quarter fluctuation. To the extent that the
Company is successful in licensing larger product suites under the Net Tools
umbrella (particularly to large enterprise and national accounts), the size of
its orders and the length of its sales cycle are likely to increase. If orders
forecasted for a specific customer for a particular quarter are not realized or
revenues are not otherwise recognized in that quarter, the Company's operating
results for that quarter could be materially adversely affected. See "
- --Potentially Longer Sales and Implementation Cycles for Certain Products."

        The trading price of the Company's Common Stock has historically been
subject to wide fluctuations, with factors such as earnings announcements and
litigation developments contributing to this volatility. Failure to achieve
periodic revenue, earnings and other operating and financial results as
forecasted or anticipated by brokerage firms, industry analysts or investors
could result in an immediate and adverse effect on the market price of the
Company's Common Stock. The


                                       -7-

<PAGE>   11

Company may not discover, or be able to confirm, revenue or earnings shortfalls
until the end of a quarter, which could result in an immediate and adverse
effect on the price of the Company's Common Stock.

        Risk of Inclusion of Network Management and Security Functionality in
Hardware and Other Software. In the future, vendors of hardware and of operating
system software or other software (such as firewall or electronic mail software)
may continue to enhance their products or bundle separate products to include
functionality that currently is provided primarily by network security and
management software. Such enhancements may be achieved through the addition of
functionality to operating system software or other software or the bundling of
network security and management software with operating system software or other
products. For example, Cisco Systems, Inc. ("Cisco") recently incorporated a
firewall in certain of its hardware products and Microsoft Corporation
("Microsoft") introduced limited anti-virus functionality into its MS-DOS
versions in 1993. The widespread inclusion of the functionality of the Company's
products as standard features of computer hardware or of operating system
software or other software could render the Company's products obsolete and
unmarketable, particularly if the quality of such functionality were comparable
to that of the Company's products. Furthermore, even if the network security
and/or management functionality provided as standard features by hardware
providers or operating systems or other software is more limited than that of
the Company's products, there can be no assurance that a significant number of
customers would not elect to accept such functionality in lieu of purchasing
additional software. If the Company were unable to develop new network security
and management products to further enhance operating systems or other software
and to replace successfully any obsolete products, the Company's business,
financial condition and results of operations would be materially adversely
affected.

        Risks Associated with Recent and Pending Acquisitions. In addition to
risks described under "-- Risks Associated with Acquisitions Generally," the
Company faces significant risks associated with its recent combination with
Network General and other recent acquisitions (including the acquisitions of
PGP, Helix, Magic Solutions and TIS). There can be no assurance that the Company
will realize the desired benefits of these transactions. In order to
successfully integrate these companies, the Company must, among other things,
continue to attract and retain key management and other personnel; integrate,
both from an engineering and a sales and marketing perspective, the acquired
products (including Network General's Sniffer and CyberCop products, PGP's
encryption products, Helix's utilities products, Magic Solution's help desk
products and TIS's firewall products) into its suite of product offerings;
integrate and develop a cohesive focused direct and indirect sales force for its
product offerings; consolidate duplicate facilities; and develop name
recognition for its new name. The diversion of the attention of management from
the day-to-day operations of the Company, or difficulties encountered in the
integration process, could have a material adverse effect on the Company's
business, financial condition and results of operations. See "-- Need to Develop
Enterprise and National Accounts Sales Force and Security Products Sales Force;
Risks Related to Direct Sales Force" and "-- Use of Indirect Sales Channels;
Need to Develop Indirect Sales Channel for Sniffer and PGP Security Products."

        During 1997, the Company incurred significant non-recurring charges
associated with the Network General combination and the acquisitions of PGP and
Helix. During the second quarter of 1998, the Company expects to incur
additional non-recurring charges associated with the acquisitions of Magic
Solutions and TIS. There can be no assurance that the Company will not incur
additional material charges in subsequent quarters to reflect additional costs
associated with these transactions and with respect to its name change and the
marketing of its products under the "Network Associates" name.

        Risks Related to Certain Business Strategies. The Company has
historically derived a significant majority of its revenues from the licensing
of its flagship anti-virus products and Sniffer products. See "-- Dependence on
Revenue from Flagship Anti-Virus and Sniffer Products." The Company is currently
focusing its efforts on broadening its revenue base by providing network
security and management solutions to enterprise customers, targeting in
particular the Windows NT/Intel platform. In furtherance of this strategy, the
Company recently organized its products into four product suites -- McAfee Total
Virus Defense, PGP Total Network Security, and Sniffer Total Network Visibility
and McAfee Total Virus Defense. These four product suites together form an
integrated solution called "Net Tools" which utilizes a new pricing model. There
can be no assurance that potential customers will respond favorably to the
modified pricing structure and the lack of a favorable response could materially
adversely affect the Company's operating results. Although the Company will
continue to offer perpetual licenses with annual support and maintenance
contracts for its Sniffer products, it is currently developing a subscription
licensing model for those products. In addition, in an effort to increase total
Sniffer unit sales the Company


                                       -8-

<PAGE>   12

intends to develop software only versions of certain of its Sniffer products --
meaning that the Company would no longer sell the hardware components contained
in these Sniffer products. There can be no assurance that the Company can
produce a software only Sniffer product on a timely basis or at all, that
customers will not continue to require that the Company provide the associated
hardware platform and components, that total unit licenses of Sniffer products
will increase over previous levels or that customers will react favorably to the
subscription pricing model for Sniffer products. To the extent that customers do
license Sniffer products on a two-year subscription basis or license significant
amounts of software only Sniffer products, the Company's operating results and
financial condition would likely be affected. In the case of subscription
licenses, the Company would, among other things, expect an increase in deferred
revenues related to the service portion of the two-year Sniffer license that
would be capitalized on the Company's balance sheet. In the initial year of the
license, the corresponding revenue would be lower than if the license were
perpetual. In the case of the software only Sniffer product, for any individual
license, the Company would expect lower total revenues and a higher overall
gross margin related to the transaction, as the Company would not be selling the
corresponding hardware component. Currently, the hardware component has a lower
gross margin than the total product gross margin.

        The Company has been acquiring (and is continuing to investigate the
acquisition of) existing independent agents and distributors of its products in
certain strategic markets or has been converting these independent agents into
resellers who must purchase Company products from Company approved distributors.
These actions may require, among other things, that the Company provide the
technical support to customers that was previously provided by such agents and
distributors. There can be no assurance that the Company can provide such
support as effectively or on a timely basis or at all, that the Company will
operate any acquired distributor or agent as successfully as the previous
operators, that the acquisition of any distributor or agent or the conversion of
any agent into a reseller will result in the desired increased foreign revenues
or that the Company is able to identify and retain suitable distributors in any
market in which it converts an independent agent. See " -- Risks Associated with
Acquisitions Generally" and " -- Risks Related to International Revenue and
Activities."

        As part of the Net Tools concept, the Company is in the process of
designing a centralized console from which the various component suites can be
operated, administered and maintained utilizing a common look and feel. The
Company faces significant engineering challenges related to these efforts. In
addition, the Company faces significant engineering and other challenges related
to the integration of its various security products (such as its recently
acquired PGP encryption products and Network General CyberCop product) into a
marketable suite of products and the development of a software only Sniffer
product. Success of the Company's Net Tools suite strategy will also depend, in
part, upon successful development and coordination of the Company's sales force;
on successful development of a national accounts sales force and an effective
indirect sales channel for the Company's Sniffer and PGP security products; and
on the development and expansion of an effective professional services
organization. See " -- Risks Associated with Recent Transactions," " -- Risks
Associated with Acquisitions Generally," " -- Need to Develop Enterprise and
National Accounts Sales Force and Security Products Sales Force; Risks Related
to Direct Sales Force," " -- Use of Indirect Sales Channels; Need to Develop
Indirect Sales Channel for Sniffer and PGP Security Products" and " -- Need to
Expand and Develop An Effective Professional Services Organization."

        The foregoing factors, individually or in the aggregate, could
materially adversely affect the Company's operating results and could make
comparison of historic operating results and balances difficult or not
meaningful.

        Risks Associated with Acquisitions Generally. The software industry has
experienced and is expected to continue to experience a significant amount of
consolidation. In addition, it is expected that the Company will grow internally
and through strategic acquisitions in order, among other things, to expand the
breadth and depth of its product suites and to build its professional services
organization. The Company continually evaluates potential acquisitions of
complementary businesses, products and technologies. In addition to the
combination with Network General in December 1997, the Company has consummated a
series of significant acquisitions since 1994, including the acquisition of
Magic Solutions in April 1998, the acquisitions of PGP and Helix in December
1997, Cinco Networks, Inc. in August 1997, 3DV Technology, Inc. in March 1997,
FSA Corporation of Canada in August 1996, Vycor Corporation in February 1996,
Saber Software Corporation, Inc. in August 1995 and ProTools, Inc. in January
1994. In addition, since 1995 the Company has acquired a number of its
international distributors, including distributors in Australia, Brazil, Japan
and The Netherlands and is currently investigating acquisitions of additional
foreign distributors. Past acquisitions have consisted of, and future
acquisitions will likely include, acquisitions of businesses, interests in
businesses and assets of businesses. Any acquisition, depending on its size,
could result


                                       -9-

<PAGE>   13

in the use of a significant portion of the Company's available cash or, if such
acquisition is made utilizing the Company's securities, could result in
significant dilution to the Company's stockholders, and could result in the
incurrence of significant acquisition related charges to earnings. Acquisitions
by the Company may result in the incurrence or the assumption of liabilities,
including liabilities that are unknown or not fully known at the time of
acquisition, which could have a material adverse effect on the Company.
Furthermore, there can be no assurance that any products acquired in connection
with any such acquisition will gain acceptance in the Company's markets or that
the Company will obtain the anticipated or desired benefits of such
transactions.

        Achieving the anticipated benefits of an acquisition will depend, in
part, upon whether the integration of the acquired business, products or
technology is accomplished in an efficient and effective manner, and there can
be no assurance that this will occur. Moreover, successful acquisitions in the
high technology industry may be more difficult to accomplish than in other
industries. Combining a merged or acquired company requires, among other things,
integration of product offerings and coordination of sales and marketing and
research and development efforts. There can be no assurance that such an
integration can be accomplished smoothly or successfully. The difficulties of
such integration may be increased by the necessity of coordinating
geographically separated organizations, the complexity of the technologies being
integrated, and the necessity of integrating personnel with disparate business
backgrounds and combining two different corporate cultures. The integration of
operations following an acquisition requires the dedication of management
resources that may distract attention from the day-to-day business, and may
disrupt key research and development, marketing or sales efforts. The inability
of management to successfully integrate any acquisition could have a material
adverse effect on the business, operating results and financial condition of the
Company. In addition, as commonly occurs, during the pre-acquisition and
integration phases of technology company acquisitions, aggressive competitors
may undertake initiatives to attract customers and to recruit key employees
through various incentives.

        Rapid Technological Change; Risks Associated with Product Development.
The network security and management market is highly fragmented and is
characterized by ongoing technological developments, evolving industry standards
and rapid changes in customer requirements. The Company's success depends upon
its ability to offer a broad range of network security and management software
products, to continue to enhance existing products, to develop and introduce in
a timely manner new products that take advantage of technological advances, and
to respond promptly to new customer requirements. While the Company believes
that it offers one of the broadest product lines in the network management and
security market, this market is continuing to evolve and customer requirements
are continuing to change. As the market evolves and competitive pressures
increase, the Company believes that it will need to further expand its product
offerings. There can be no assurance that the Company will be successful in
developing and marketing, on a timely basis, enhancements to its existing
products or new products, or that such enhancements or new products will
adequately address the changing needs of the marketplace.

        In addition, from time to time, the Company or its competitors may
announce new products with new or additional capabilities or technologies. Such
announcements of new products could have the potential to replace, or shorten
the life cycles of, the Company's existing products and to cause customers to
defer or cancel purchases of the Company's existing products.

        The Company has in the past experienced delays in software development,
and there can be no assurance that the Company will not experience delays in
connection with its current or future product development activities. Complex
software products such as those offered by the Company may contain undetected
errors or version compatibility issues, particularly when first introduced or
when new versions are released, resulting in loss of or delay in market
acceptance. For example, the Company experienced compatibility issues in
connection with its recent NetShield upgrade, and the Company's anti-virus
software products have in the past falsely detected viruses that did not
actually exist. See " -- Risk of False Detection of Viruses." Delays and
difficulties associated with new product introductions, performance or
enhancements could have a material adverse effect on the Company's business,
financial condition and results of operation.

        The Company's development efforts are impacted by the adoption or
evolution of industry standards related to its products and the environments in
which they operate. For example, no uniform industry standard has developed in
the market for encryption security products. As industry standards are adopted
or evolve, the Company may be required to modify existing products or develop
and support new versions of existing products. In addition, to the extent that
no industry standard


                                      -10-

<PAGE>   14

develops, the Company's products and those of its competitors may be
incompatible if they use competing standards, which could prevent or
significantly delay overall development of the market for a particular product
or products. The failure of the Company's products to comply, or delays in
compliance, with existing or evolving industry standards could have a material
adverse effect on the Company's business, financial condition and results of
operation.

        The Company's long-term success will depend on its ability on a timely
and cost-effective basis to develop upgrades and updates to its existing product
offerings, to modify and enhance acquired products, and to introduce new
products which meet the needs of current and potential customers. Future
upgrades and updates may, among other things, include additional functionality,
respond to user problems or address issues of compatibility with changing
operating systems and environments. The Company believes that the ability to
provide these upgrades and updates to users frequently and at a low cost is a
key to success. For example, the proliferation of new and changing viruses makes
it imperative to update anti-virus products frequently in order for the products
to avoid obsolescence. Failure to release such upgrades and updates on a timely
basis could have a material adverse effect on the Company's business, financial
condition and results of operations. There can be no assurance that the Company
will be successful in these efforts. In addition, future changes in Windows 95,
Windows NT, NetWare or other popular operating systems may result in
compatibility problems with the Company's products. Further, delays in the
introduction of future versions of operating systems or lack of market
acceptance of future versions of operating systems would result in a delay or a
reduction in the demand for the Company's future products and product versions
which are designed to operate with such future versions of operating systems.
The Company's failure to introduce in a timely manner new products that are
compatible with operating systems and environments preferred by desktop computer
users would have a material adverse effect on the Company's business, financial
condition and results of operations.

        Dependence on Revenue from Flagship Anti-Virus and Sniffer Products. In
recent years, the Company has derived a substantial majority of its net revenue
from its flagship McAfee anti-virus software products and Sniffer network fault
and performance management products. These products are expected to continue to
account for a significant portion of the Company's net revenue for the
foreseeable future. Because of this concentration of revenue, a decline in
demand for, or in the prices of, these anti-virus and network management
products as a result of competition, technological change, a change in the
Company's pricing model for such products, the inclusion of anti-virus or
network management and analysis functionality in system hardware or operating
system software or other software or otherwise, or a maturation in the
respective markets for these products could have a material adverse effect on
the Company's business, financial condition and results of operations.

        Dependence on Emergence of Network Management and Network Security
Markets. The markets for the Company's network management and network security
products are evolving, and their growth depends upon broader market acceptance
of network management and network security software, including help desk
software. Although the number of LAN-attached personal computers ("PCs") has
increased dramatically, the network management and network security markets
continue to be emerging markets and there can be no assurance that such markets
will continue to develop or that further market development will be rapid enough
to benefit the Company significantly. In addition, there are a number of
potential approaches to network management and network security, including the
incorporation of management and security tools into network operating systems.
Therefore, even if network management and network security tools gain broader
market acceptance, there can be no assurance that the Company's products will be
chosen by organizations which acquire network management and network security
tools. Furthermore, to the extent that either the network management or network
security market does continue to develop, the Company expects that competition
will increase. See "-- Competition" and "-- Risk of Inclusion of Network
Security and Management Functionality in Hardware and Other Software."

        Competition. The markets for the Company's products are intensely
competitive and the Company expects competition to increase in the near-term.
The Company believes that the principal competitive factors affecting the
markets for its products include performance, functionality, quality, customer
support, breadth of product line, frequency of upgrades and updates, integration
of products, manageability of products, brand name recognition, company
reputation and price. Certain of the criteria upon which the performance and
quality of the Company's anti-virus software products compete include the number
and types of viruses detected, the speed at which the products run and ease of
use. Certain of the Company's competitors have been in the network management
market longer than the Company, and other competitors, such as Symantec
Corporation ("Symantec"), Intel Corporation ("Intel"), Seagate Technology Inc.
("Seagate") and Hewlett-Packard Company ("HP"), are larger and have greater name
recognition than the Company. The Company will also need to develop name


                                      -11-

<PAGE>   15

recognition for its new name, "Network Associates." In addition, certain larger
competitors such as Intel, Microsoft and Novell Inc. ("Novell") have established
relationships with hardware vendors related to their other product lines. These
relationships may provide them with a competitive advantage in penetrating the
OEM market with their network security and management products. As is the case
in many segments of the software industry, the Company has been encountering,
and expects to further encounter, increasing competition. This increased
competition could reduce average selling prices and, therefore, profit margins.
Competitive pressures could result not only in sustained price reductions but
also in a decline in sales volume, which events would materially adversely
affect the Company's business, financial condition and results of operations. In
addition, competitive pressures may make it difficult for the Company to
maintain or exceed its growth rate.

        Although there is a trend toward consolidation in the network security
and management market, the market is currently highly fragmented with products
offered by many vendors. The Company's principal competitor is the Peter Norton
Group of Symantec in the network security market and Intel's LanDesk in the
network management market. The Company's other competitors include Computer
Associates/Cheyenne Software, IBM, Seagate, the Dr. Solomon Group and Trend
Micro, Inc., as well as numerous smaller companies and shareware authors that
may in the future develop into stronger competitors or be consolidated into
larger competitors. In the encryption portion of the security market, the
Company's principal competitors are Security Dynamics Technologies, Inc., Cylink
Corporation, Entrust Technologies and VeriSign, Inc. The Company's principal
competitors in the help desk market are Remedy Corporation, Software Artistry
(recently acquired by Tivoli Systems/IBM) and Magic Solutions, Inc. The
Company's principal competitor in the software-based network fault and
performance management market is HP, with other competitors including Azure
Technologies Incorporated, Concord Communications, DeskTalk Systems, Kaspia
Systems, Shomiti Systems, Inc. and Wandel & Goltermann, Inc. The Company also
faces competition in the security market from Cisco, Security Dynamics
Technologies, Inc., Checkpoint Software and other vendors in the
encryption/firewall market. In addition, the Company faces competition from
large and established software companies such as Microsoft, Intel, Novell and HP
which offer network management products as enhancements to their network
operating systems. As the network management market develops, the Company may
face increased competition from these large companies, as well as other
companies seeking to enter the market. The trend toward enterprise-wide network
management and security solutions may result in a consolidation of the network
management and security market around a smaller number of vendors who are able
to provide the necessary software and support capabilities. In addition, to the
extent that the Company is successful in developing its Net Tools suite of
products designed around a centralized management and administration console for
the Windows NT platform, the Company will likely compete with large computer
systems management companies such as Tivoli Systems (TME) and Computer
Associates (Unicenter). There can be no assurance that the Company will continue
to compete effectively against existing and potential competitors, many of whom
have substantially greater financial, technical, marketing and support resources
and name recognition than the Company. In addition, there can be no assurance
that software vendors who currently use traditional distribution methods will
not in the future decide to compete more directly with the Company by utilizing
electronic software distribution.

        The competitive environment for anti-virus software internationally is
similar to that in North America, although local competitors in specific foreign
markets present stronger competition and shareware authors control a more
significant portion of the European market. The international market for network
management software has developed more slowly than the North American market,
although larger competitors such as Intel and Symantec have begun to penetrate
European markets. Asian markets have lagged significantly behind North America
and Europe in their adoption of networking technology. There can be no assurance
that the Company will be able to compete successfully in international markets.

        Need to Develop Enterprise and National Accounts Sales Force and
Security Products Sales Force; Risks Related to Direct Sales Force. In
connection with its recent acquisitions and as part of its evolving strategy of
offering product suites under the Net Tools umbrella, the Company has recently
reorganized its direct sales force into three tiers. The first tier focuses on
the sale of the full product suite under the Net Tools umbrella to enterprise
and national account customers. The second tier consists of four separate sales
groups focused on the sale of the individual product suites (i.e., McAfee Total
Virus Defense; PGP Total Network Security; Sniffer Total Network Visibility; or
McAfee Total Service Desk) to the departmental level. The third tier consists of
four separate outbound corporate telesales forces who actively market the
Company's individual product suites to customers with less than 1,000 nodes. The
Company historically has not had a large enterprise or national accounts sales
force and only recently developed a direct sales group focused on these larger
accounts. In addition, the Company has not historically had a separate sales
force focused on the sale of its suite of security products (many of which were
only recently acquired and are currently being engineered into a common suite).
To succeed in the direct sales channel


                                      -12-

<PAGE>   16

for the enterprise and national accounts market and for the sale of the separate
security product suite, the Company will be required to build a significant
direct sales organization and will be required to attract and retain qualified
personnel, which personnel will require training about, and knowledge of,
product attributes for the Company's suite of products. There can be no
assurance that the Company will be successful in building the necessary sales
organization or in attracting, retaining or training these individuals.
Historically, the Company has sold its products at the departmental level. To
succeed in the enterprise and national accounts market will require, among other
things, establishing relationships and contacts with senior technology officers
at these accounts. There can be no assurance that the Company or its sales force
will be successful in these efforts.

        The Company's sales organization structure may result in multiple
customer contacts by different Company sales representatives (particularly in
circumstances where the customer has multiple facilities and offices), a lack of
coordination between the Company's various sales organizations and a lack of
focus by the individual sales representatives on their designated customers or
products. The occurrence of these events could lead to customer confusion,
disputes in the sales force and lost revenue opportunities which could have a
material adverse effect on the Company's business, financial condition and
results of operations. In addition, while the development of a direct sales
channel reduces the Company's dependence on resellers and distributors, it may
lead to conflicts for the same customers and further customer confusion,
pressure by current and prospective customers for price reductions on products
and, consequently, in reductions in the Company's gross margin and operating
profit.

        Use of Indirect Sales Channels; Need to Develop Indirect Sales Channel
for Sniffer and PGP Security Products. The Company markets a significant portion
of its products to end-users through distributors, resellers and VARs. The
Company's distributors sell other products that are complementary to, or compete
with, those of the Company. While the Company encourages its distributors to
focus on its products through market and support programs, there can be no
assurance that these distributors will not give greater priority to products of
other suppliers, including competitors.

        The Company does not have an extensive indirect sales channel for its
Network Sniffer products or its PGP security products. To succeed in the
indirect sales channel, the Company will be required to build a more extensive
network of distributors, resellers and VARs who will support and market these
products. These indirect channel participants will require significant training
about, and knowledge of, product attributes for these products and the related
product suites. There can be no assurance that the Company can successfully
establish such an indirect channel on a timely basis or at all or that such a
channel, once established, can be maintained.

        The Company's agreements with its distributors provide for a right of
return. This right of return may be triggered by a number of events, including
returns to distributors by end users, inaccurate estimates of end user demand by
distributors, increased purchases by distributors in response to sales
incentives or transitions to new products or versions of products. As a result
of this right of return, revenue recognized by the Company upon sales to
distributors is subject to a reserve for returns. Returns could exceed reserves
as a result of distributors holding excessive Company product inventory. There
can be no assurance that current or future reserves established by the Company
will be adequate.

        Need to Expand and Develop An Effective Professional Services
Organization; Risks Related to Third-Party Professional Services. As the
Company's products and computer networks become more complex, customers will
increasingly require greater professional assistance in the design,
installation, configuration and implementation of their networks and acquired
products. To date, the Company has relied on its limited professional services
capabilities and increasingly on outside professional service providers
(including its distributors, resellers and system integrators). There can be no
assurance that third party service providers can or will continue to be willing
to provide adequate levels (both in terms of time and quality) of professional
services. Moreover, reliance on these third parties reduces the Company's
control over the provision of support services for its products and places a
greater burden on these third parties, which, in turn, could delay the Company's
recognition of product revenue, could harm the Company's relationships or
reputation with such third parties or the end users of its products and could
result in decreased future sales of, or prices for, its products.

        To more effectively service its customer's evolving needs, the Company
intends to significantly expand and develop its worldwide professional service
organization. There can be no assurance that the Company will be successful in
its efforts to expand and develop an effective professional services
organization. This will require that the Company hire and train


                                      -13-

<PAGE>   17

additional service professional who must be continually trained and educated to
ensure that they possess sufficient technical skills and product knowledge. In
particular, the market for qualified professionals is intensely competitive,
making hiring and retention difficult. The Company expects significant
competition in this market from existing providers of professional services and
future entrants. The Company must also properly price its services to attract
customers, while maintaining sufficient margins for its services. The Company
expects that it will have lower profit margins on its service revenues. The
failure to develop an effective professional services organization could have a
material adverse effect on the Company's business, financial condition and
results of operations.

        Reliance on Microsoft Technology. Although the Company intends to
support other operating systems, the Company's mission is to be the leading
supplier of network security and management products for Windows NT/Intel based
networks. Sales of the Company's products would be materially and adversely
affected by market developments which are adverse to the Windows operating
environments, including the failure of users and application developers to
accept Windows NT. In addition, the Company's ability to develop products using
the Windows operating environments is substantially dependent on its ability to
gain timely access to, and to develop expertise in, current and future
developments by Microsoft, of which there can be no assurance.

        Risks Associated with Failure to Manage Growth. The Company's growth
internally and through its numerous acquisitions has placed, and any further
expansion would continue to place, a significant strain on its limited
personnel, management and other resources. In the future, the Company's ability
to manage any growth, particularly with the anticipated expansion of the
Company's international business and growth in indirect channel business, will
require it to attract, train, motivate and manage new employees successfully, to
effectively integrate new employees into its operations and to continue to
improve its operational, financial, management and information systems and
controls. The failure to effectively manage any further growth could have a
material adverse effect on the Company's business, financial condition and
results of operations.

        Proprietary Technology and Rights. The Company's success is heavily
dependent upon proprietary software technology. The Company relies on a
combination of contractual rights, trademarks, trade secrets and copyrights to
establish and protect proprietary rights in its software. There can be no
assurance these protections will be adequate or that competitors will not
independently develop technologies or products that are substantially equivalent
or superior to the Company's products.

        The Company does not typically obtain signed license agreements from its
corporate, government and institutional customers who license products directly
from it. The Company includes an electronic version of a "shrink-wrap" license
in all of its electronically distributed software and a printed license in the
box for its products distributed through traditional distribution channels in
order to protect its copyrights and trade secrets in those products. Since none
of these licenses are signed by the licensee, many authorities believe that such
licenses may not be enforceable under the laws of many states and foreign
jurisdictions. In addition, the laws of some foreign countries either do not
protect proprietary rights or offer only limited protection for those rights.
There can be no assurance that the steps taken by the Company to protect its
proprietary software technology will be adequate to deter misappropriation of
this technology. For example, the Company is aware that a substantial number of
users of its anti-virus products have not paid any registration or license fees
to the Company. Changing legal interpretations of liability for unauthorized use
of the Company's software, or lessened sensitivity by corporate, government or
institutional users to avoiding copyright infringement, could have a material
adverse effect on the Company's business, financial condition and results of
operations.

        The Company's principal assets are its intellectual property, and the
Company competes in an increasingly competitive market. There has been
substantial litigation regarding intellectual property rights of technology
companies. The Company has in the past been, and currently is, subject to
litigation related to its intellectual property (including a pending unfair
trade practice case and a patent infringement case involving Symantec and Trend
Micro Inc., respectively). There can be no assurance that there will be no
developments arising out of such pending litigation or any other litigation to
which the Company is or may become party which could have a material adverse
effect on the Company's business, financial condition and results of operation.


                                      -14-

<PAGE>   18

        In addition, as the Company may acquire a portion of software included
in its products from third parties, its exposure to infringement actions may
increase because it must rely upon such third parties as to the origin and
ownership of any software being acquired. Similarly, exposure to infringement
claims exists and will increase to the extent that the Company employs or hires
additional software engineers previously employed by competitors,
notwithstanding measures taken by them to prevent usage by such software
engineers of intellectual property used or developed by them while employed by a
competitor. In the future, litigation may be necessary to enforce and protect
trade secrets and other intellectual property rights owned by the Company. The
Company may also be subject to litigation to defend it against claimed
infringement of the rights of others or to determine the scope and validity of
the proprietary rights of others. Any such litigation could be costly and cause
diversion of management's attention, either of which could have a material
adverse effect on the Company's business, financial condition and results of
operations. Adverse determinations in such litigation could result in the loss
of the Company's proprietary rights, subject the Company to significant
liabilities, require the Company to seek licenses from third parties or prevent
the Company from manufacturing or selling its products, any one of which could
have a material adverse effect on the Company's business, financial condition
and results of operations. Furthermore, there can be no assurance that any
necessary licenses will be available on reasonable terms, or at all.

        Proprietary Technology and Rights; Litigation. The Company's success is
heavily dependent upon proprietary software technology. The Company relies on a
combination of contractual rights, trademarks, trade secrets and copyrights to
establish and protect proprietary rights in its software. There can be no
assurance these protections will be adequate or that competitors will not
independently develop technologies or products that are substantially equivalent
or superior to the Company's products.

        Network Associates has changed its legal name to "Networks Associates,
Inc." and has begun conducting business as "Network Associates." Four companies,
(Network Associates Corporation and The Network Associates in California;
Network Associates, Inc. in Kansas; and Network Associates, Inc. in Oregon) have
made claims (including various trademark claims) or demands with respect to
Network Associates' use of the name Network Associates. Network Associates
Corporation filed suit in Superior Court of California for the county of Santa
Clara on February 25, 1998, seeking among other things, a preliminary and
permanent injunction restraining Network Associates from using in California the
name "Network Associates" or "Network Associates, Inc." and unspecified
compensatory and punitive damages. A preliminary injunction hearing is scheduled
for June 4, 1998, but the parties have reached an agreement in principle to
settle the matter. 

        On April 24, 1997, Network Associates was served by Symantec with a suit
filed in the United States District Court, Northern District of California, San
Jose Division, alleging copyright infringement and unfair competition by Network
Associates. Symantec alleges that Network Associates' computer software program
called "PC Medic" copied portions of Symantec's computer software program
entitled "CrashGuard." Symantec's complaint sought injunctive relief and
unspecified money damages. On July 20, 1997, Symantec sought leave to amend its
complaint to include additional allegations of copyright infringement and trade
secret misappropriation pertaining to Network Associates' "VirusScan" product.
Symantec sought injunctive relief and unspecified money damages. On October 6,
1997, the Court issued an order granting Symantec's motion to amend its
complaint and enjoining Network Associates from shipping any product containing
either an approximately 30-line routine found in Crash Guard or an approximately
100-line routine found in a Symantec DLL. The Court's order expressly stated
that "the court is not enjoining the sale or distribution of [McAfee's] current
product." On December 19, 1997, the Court denied Symantec's motion to enjoin
sale or distribution of Network Associates' current PC Medic product. On
February 11, 1998, Symantec filed another motion seeking leave to again amend
its complaint to include additional allegations of trade secret
misappropriation, unfair competition, interference with economic advantage and
contractual relations and violations of the Racketeer Influenced and Corrupt
Organization Act ("RICO"), in connection with the alleged use by Network
Associates employees of proprietary Symantec customer information. Network
Associates will move to dismiss the RICO claim. Symantec also filed a motion for
a preliminary injunction relating to these new allegations which is scheduled
for hearing on June 5, 1998. Trial is currently set for September 1998.


                                      -15-

<PAGE>   19

        On May 13, 1997, Trend Micro, Inc. ("Trend") filed suit in United States
District Court for the Northern District of California against both Network
Associates and Symantec. Trend alleges that Network Associates' "WebShield" and
"GroupShield" products infringe a Trend patent which issued on April 22, 1997.
Trend's complaint seeks injunctive relief and unspecified money damages. On June
6, 1997, Network Associates filed its answer denying any infringement. Network
Associates also filed counterclaims against Trend alleging unfair competition,
false advertising, trade libel, and interference with prospective economic
advantage. On September 19, 1997, Symantec filed a motion to sever Trend's
action against Network Associates from its action against Symantec. Network
Associates did not oppose Symantec's motion to sever, other than to recommend a
joint hearing on patent claim interpretation. On December 19, 1997, the Court
granted Symantec's motion to sever and adopted Network Associates'
recommendation regarding a joint hearing on patent claim interpretation. As a
result of the Court's decision, Trend's actions against Network Associates and
Symantec will proceed separately. The Court has set the date for the joint
patent claim interpretation hearing for September 1998. Thirty days after the
joint patent claim interpretation hearing, the Court has indicated it will set
further dates for discovery and trial. Trend and Symantec have stated that they
have settled the case between them, although no formal dismissal notice has been
received by the Company.

        On May 6, 1997, RSA Data Security, Inc. ("RSA") filed a lawsuit against
PGP, a wholly owned subsidiary of Network Associates since December 9, 1997, in
San Mateo County Superior Court. RSA seeks a declaration from the court that
certain paragraphs of a license agreement between PGP and Public Key Partners
(the "License Agreement") have been terminated and certain other paragraphs have
survived RSA's purported termination of the License Agreement. RSA, which
purports to act on behalf of Public Key Partners, also seeks an accounting of
PGP's sales of products subject to the License Agreement. PGP denies that RSA
has the authority to act on behalf of Public Key Partners, and denies that the
License Agreement has been breached or terminated in whole or in part. On May
22, 1997, PGP filed a motion to compel arbitration of the action pursuant to an
arbitration clause in the License Agreement. PGP's motion was granted on October
9, 1997. The Court stayed the state court proceedings and ordered the action to
arbitration. The arbitration proceedings are in the preliminary stages.

        On October 14, 1997, RSA filed a patent infringement lawsuit against PGP
in the United States District Court for the Northern District of California. RSA
alleges PGP has infringed one of the patents which was licensed to PGP under the
License Agreement. On November 4, 1997, PGP moved to stay the federal action,
or, in the alternative, compel it to arbitration. On December 23, 1997, RSA
filed a motion to amend its complaint to include Network Associates as
defendant. On March 2, 1998, the court granted PGP's motion to stay the federal
patent action. A status conference is scheduled for September 14, 1998, at which
time RSA may ask the court to lift the stay if the case has not been arbitrated
or settled by that time. On April 15, 1998, RSA filed a third lawsuit on the
same patent against the Company. Counsel for the Company intend to ask the Court
to stay this action also.

        On September 15, 1997, Network Associates was named as a defendant in a
patent infringement action filed by Hilgraeve Corporation ("Hilgraeve") in the
United States District Court, Eastern District of Michigan. Hilgraeve alleges
that Network Associates' VirusScan product infringes a Hilgraeve patent which
was issued on June 7, 1994. Hilgraeve's action seeks injunctive relief and
unspecified money damages. The case is in discovery. The Court had originally
set a fact discovery cut-off of July 15, 1998 and an expert discovery cut-off of
September 15, 1998, with a status conference on September 22, 1998. Because of a
recent change in its counsel, the Company intends to ask the Court to continue
those dates. No trial date has been set.

        The Company does not typically obtain signed license agreements from its
corporate, government and institutional customers who license products directly
from it. The Company includes an electronic version of a "shrink-wrap" license
in all of its electronically distributed software and a printed license in the
box for its products distributed through traditional distribution channels in
order to protect its copyrights and trade secrets in those products. Since none
of these licenses are signed by the licensee, many authorities believe that such
licenses may not be enforceable under the laws of many states and foreign
jurisdictions. In addition, the laws of some foreign countries either do not
protect proprietary rights or offer only limited protection for those rights.
There can be no assurance that the steps taken by the Company to protect its
proprietary software technology will be adequate to deter misappropriation of
this technology. For example, the Company is aware that a substantial number of
users of its anti-virus products have not paid any registration or license fees
to the Company.


                                      -16-

<PAGE>   20

Changing legal interpretations of liability for unauthorized use of the
Company's software, or lessened sensitivity by corporate, government or
institutional users to avoiding copyright infringement, could have a material
adverse effect on the Company's business, financial condition and results of
operations.

        The Company's principal assets are its intellectual property, and the
Company competes in an increasingly competitive market. There has been
substantial litigation regarding intellectual property rights of technology
companies. The Company has in the past been, and currently is, subject to
litigation related to its intellectual property. There can be no assurance that
there will be no developments arising out of such pending litigation or any
other litigation to which the Company is or may become party which could have a
material adverse effect on the Company's business, financial condition and
results of operation.

        In addition, as the Company may acquire a portion of software included
in its products from third parties, its exposure to infringement actions may
increase because it must rely upon such third parties as to the origin and
ownership of any software being acquired. Similarly, exposure to infringement
claims exists and will increase to the extent that the Company employs or hires
additional software engineers previously employed by competitors,
notwithstanding measures taken by them to prevent usage by such software
engineers of intellectual property used or developed by them while employed by a
competitor. In the future, litigation may be necessary to enforce and protect
trade secrets and other intellectual property rights owned by the Company. The
Company may also be subject to litigation to defend it against claimed
infringement of the rights of others or to determine the scope and validity of
the proprietary rights of others. Any such litigation could be costly and cause
diversion of management's attention, either of which could have a material
adverse effect on the Company's business, financial condition and results of
operations. Adverse determinations in such litigation could result in the loss
of the Company's proprietary rights, subject the Company to significant
liabilities, require the Company to seek licenses from third parties or prevent
the Company from manufacturing or selling its products, any one of which could
have a material adverse effect on the Company's business, financial condition
and results of operations. Furthermore, there can be no assurance that any
necessary licenses will be available on reasonable terms, or at all.

        Risks Related to International Revenue and Activities. In 1997, 1996 and
1995, net revenue from international licenses represented approximately 28%, 24%
and 25%, respectively, of the Company's net revenue. Historically, the Company
has relied primarily upon independent agents and distributors to market its
products internationally. The Company expects that international revenues will
continue to account for a significant percentage of net revenue. The Company
also expects that a significant portion of such international revenue will be
denominated in local currencies. To reduce the impact of foreign currency
fluctuations, the Company uses non-leveraged forward currency contracts.
However, there can be no assurance that the Company's future results of
operations will not be adversely affected by such fluctuations or by costs
associated with currency risk management strategies. Other risks inherent in
international revenue generally include the impact of longer payment cycles,
greater difficulty in accounts receivable collection, unexpected changes in
regulatory requirements, seasonality due to the slowdown in European business
activity during the third quarter, tariffs and other trade barriers,
uncertainties relative to regional economic circumstance (such as the current
economic turbulence in Asia), political instability in emerging markets and
difficulties in staffing and managing foreign operations. There can be no
assurance that these factors will not have a material adverse effect on the
Company's future international license revenue. Further, in countries with a
high incidence of software piracy, the Company may experience a higher rate of
piracy of its products.

        There are a number of additional risks related to the export of the
Company's PGP security products. See "-- Risks Relating to Cryptography
Technology."

        In addition, a portion of the Company's international revenue is
expected to continue to be generated through independent agents. Since these
agents will not be employees of the Company and will not be required to offer
the Company's products exclusively, there can be no assurance that they will
continue to market the Company's products. Also, the Company is likely to have
limited control over its agents, limited access to the names of the customers to
whom the agents sell its products and limited knowledge of the information
provided by, or representations made by, these agents to its customers.

        Risk of Sabotage. Given the Company's high profile in the anti-virus
software market, the Company has been a target of computer "hackers" who have
created viruses to sabotage its products. While to date these viruses have been
discovered quickly and their dissemination has been limited, there can be no
assurance that similar viruses will not be created in the


                                      -17-

<PAGE>   21

future, that they will not cause damage to users' computer systems and that
demand for the Company's software products will not suffer as a result. In
addition, since the Company does not control diskette duplication by
distributors or its independent agents, there can be no assurance that diskettes
containing the Company's software will not be infected.

        Risk of False Detection of Viruses. The Company's anti-virus software
products have in the past and may at times in the future falsely detect viruses
that do not actually exist. Such "false alarms," while typical in the industry,
may impair the perceived reliability of the Company's products and may therefore
adversely impact market acceptance of the Company's products. In addition, the
Company has in the past been subject to litigation claiming damages related to a
false alarm, and there can be no assurance that similar claims will not be made
in the future.

        Risks Relating to Cryptography Technology. Certain of the Company's PGP
network security products, technology and associated assistance are subject to
export restrictions administered by the U.S. Department of State and the U.S.
Department of Commerce, which permit the export of encryption products only with
the required level of export license. In addition, these U.S. export laws
prohibit the export of encryption products to a number of countries deemed
hostile by the U.S. government. U.S. export regulations regarding the export of
encryption technology require either a transactional export license or the
granting of Department of Commerce Commodity jurisdiction. As result of this
regulatory regime, foreign competitors facing less stringent controls on their
products may be able to compete more effectively than the Company in the global
market. While the Company has obtained approval from the Department of Commerce
to export to certain end users, there can be no assurance that the U.S.
government will approve pending or future export license requests. Further,
there can be no assurance that the list of products and countries for which
export approval is required, and the regulatory policies with respect thereto,
will not be revised from time to time. Failure to obtain the required licenses
or the costs of compliance could have a material adverse effect on the Company's
international revenues.

        The Company's PGP network security products are dependent on the use of
public key cryptography technology, which depends in part on the application of
certain mathematical principles known as "factoring." The security afforded by
public key cryptography technology is predicated on the assumption that the
factoring of the composite of large prime numbers is difficult. Should an easy
factoring method be developed, then the security afforded by encryption products
utilizing public key cryptography technology would be reduced or eliminated.
Furthermore, any significant advance in techniques for attacking cryptographic
systems could also render some or all of the Company's existing products and
services obsolete or unmarketable. There can be no assurance that such
developments will not occur. Moreover, even if no breakthroughs in factoring or
other methods of attacking cryptographic systems are made, factoring problems
can theoretically be solved by computer systems significantly faster and more
powerful than those presently available. If such improved techniques for
attacking cryptographic systems are ever developed, it could have a material
adverse effect on the Company's business, operating results and financial
condition.

        Product Liability. The Company's anti-virus and network management
software products are used to protect and manage computer systems and networks
that may be critical to organizations and, as a result, the sale and support of
these products by the Company may entail the risk of product liability and
related claims. The Company's license agreements with its customers typically
contain provisions designed to limit the Company's exposure to potential product
liability claims. It is possible, however, that the limitation of liability
provisions contained in these license agreements may not be effective under the
laws of certain jurisdictions, particularly in circumstances involving unsigned
licenses. A product liability claim brought against the Company could have a
material adverse effect on the Company's business, financial condition and
results of operations.

        Dependence upon Key Personnel. The success of the Company will depend to
a significant extent upon a number of key technical and management employees.
While employees are required to sign standard agreements concerning
confidentiality and ownership of inventions, Company employees are generally not
otherwise subject to employment agreements or to noncompetition covenants. The
loss of the services of any key employees could have a material adverse effect
on the Company's business, financial condition and results of operations. The
Company does not maintain life insurance policies on its key employees. The
ability of the Company to achieve its revenue and operating performance
objectives will depend in large part on its ability to attract and retain
technically qualified and highly skilled sales, consulting, technical, marketing
and management personnel. Competition for such personnel is intense and is
expected to remain so for the foreseeable future. There can be no assurance the
Company will be successful in retaining its existing key personnel and in


                                      -18-

<PAGE>   22

attracting and retaining the personnel it requires, and failure of the Company
to retain and grow its key employee population could adversely affect the
Company's business and operating results. In early April 1998, Messrs. Leslie
Denend, David Carson and John Stringer resigned from their positions as
executive officers of the Company. Mr. Denend will remain a director of the
Company. Additions of new and departures of existing personnel, particularly in
key positions, can be disruptive and can result in departures of existing
personnel, which could have a material adverse effect upon the Company's
business, operating results and financial condition.

        Customer Purchase Decisions; Potentially Longer Sales and Implementation
Cycles for Certain Products Suites. The products offered by the Company may be
considered to be capital purchases by certain customers or prospective
customers. Capital purchases are often considered discretionary and, therefore,
are canceled or delayed if the customer experiences a downturn in its business
or prospects or as a result of economic conditions in general. Any such
cancellation or delay could adversely affect the Company's results of
operations. In addition, as the Company proceeds with its strategy of selling
product suites under the Net Tools umbrella (particularly to larger enterprise
and national accounts), its sales cycle is likely to lengthen. Such sales may
involve a lengthy education process and a significant technical evaluation and
commitment of capital and other resources and may be subject to the risk of
delays associated with customers' internal budget and other procedures for
approving large capital expenditures, deploying new technologies within their
networks and testing and accepting new technologies that affect key operations.
Because of the potentially lengthy sales cycle and the potentially large size of
such orders, if orders forecasted for a specific customer for a particular
quarter are not realized or revenues are not otherwise recognized in that
quarter, the Company's operating results for that quarter could be materially
adversely affected. See "-- Variability of Quarterly Operating Results" and
"Management's Discussion and Analysis of Financial Condition and Results of
Operations."

        Year 2000 Compliance. Many currently installed computer systems and
software products are coded to accept only two digit entries in the date code
field. These date code fields will need to accept four digit entries to
distinguish 21st century dates from 20th century dates. As a result, many
companies' software and computer systems may need to be upgraded or replaced in
order to comply with such "Year 2000" requirements. Although the Company
believes that its products and systems are Year 2000 compliant, the Company
utilizes third-party equipment and software that may not be Year 2000 compliant.
Failure of such third-party equipment or software to operate properly with
regard to the Year 2000 and thereafter could require the Company to incur
unanticipated expenses to remedy any problems, which could have a material
adverse effect on the Company's business, operating results and financial
condition. The business, operating results and financial condition of the
Company's customers could be adversely affected to the extent that they utilize
third-party software products which are not Year 2000 compliant. Furthermore,
the purchasing patterns of customers or potential customers may be affected by
Year 2000 issues as companies expend significant resources to correct their
current systems for Year 2000 compliance. These expenditures may result in
reduced funds available to purchase products and services such as those offered
by the Company, which could have a material adverse effect on the Company's
business, operating results and financial condition.

        Supplier Dependence; Third Party Manufacturing. Certain of the Company's
products contain critical components supplied by a single or a limited number of
third parties. The Company has been required to purchase and inventory certain
of the computer platforms around which it designs its network fault and
performance management products to ensure an available supply of the product for
its customers. Any significant shortage of these platforms or other components
or the failure of the third party supplier to maintain or enhance these products
could lead to cancellations of customer orders or delays in placement of orders
which could materially adversely affect the Company's results of operations. If
the Company's purchase of such components or platforms exceeds demand, the
Company could incur losses or other charges in disposing of excess inventory,
which could also materially adversely affect the Company's results of
operations.

        The Company's manufacturing operations consist primarily of final
assembly, testing and quality control of materials, components, subassemblies
and systems for its Sniffer based products. The Company intends to outsource
these manufacturing operations in 1998. There can be no assurance that the
Company will be able to qualify and secure on commercially acceptable terms
satisfactory third party manufacturers on a timely basis or at all. In addition,
reliance on third party manufacturers will involve a number of risks, including
the lack of direct control over the manufacturing process, the absence or
unavailability of adequate capacity and reduced control over delivery schedules,
quality control and costs. In the event that, once initially secured, the
Company's third party manufacturers are unable or unwilling to continue to
manufacture the Sniffer based products in required volumes, on a cost effective
basis, in a timely manner or at all, the Company will have


                                      -19-

<PAGE>   23

to secure additional manufacturing capacity. Even if such additional capacity is
available at commercially acceptable terms, the qualification process could be
lengthy and could create delay in product shipments.

        TIS Related Risks. There are certain other risks associated with the
business of TIS which are described in the Registration Statement on Form S-3
filed with the Commission in connection with the pending TIS acquisition. These
additional risks are incorporated by reference herein and include risks related
to TIS's security products and risks of doing business with the U.S. government.

        Possible Price Volatility of Common Stock and Debentures. The trading
price of the Company's Common Stock has historically been, and is expected to
be, subject to wide fluctuations. The market price of the Debentures and the
shares of Common Stock into which the Debentures are convertible may be
significantly impacted by quarterly variations in financial performance,
shortfalls in revenue or earnings from levels forecast by securities analysts,
changes in estimates by such analysts, market conditions in the computer
software or hardware industries, product introductions by the Company or its
competitors, announcements of extraordinary events such as acquisitions or
litigation or general economic conditions. Statements or changes in opinions,
ratings, or earnings estimates made by brokerage firms or industry analysts
relating to the market in which the Company does business or relating to the
Company specifically could result in an immediate and adverse effect on the
market price of the Debentures and the Common Stock into which the Debentures
are convertible. In addition, in recent years the stock market has experienced
extreme price and volume fluctuations. These fluctuations have had a substantial
effect on the market prices for many high technology and emerging growth
companies, often unrelated to the operating performance of the specific
companies. There can be no assurances that the market price of the Debentures
and the Common Stock into which the Debentures are convertible will not decline
below the levels prevailing at the time of this offering. Securities class
action lawsuits are often brought against companies following periods of
volatility in the market price of their securities. Any such litigation against
the Company could result in substantial costs and a diversion of resources and
management attention.

        Subordination. The Debentures are unsecured and subordinated in right of
payment to all existing and future Senior Indebtedness (as defined) of the
Company. As a result of such subordination, in the event of bankruptcy,
liquidation or reorganization of the Company and in certain other events, the
assets of the Company will be available to pay its obligations with respect to
the Debentures only after all Senior Indebtedness has been paid in full, and
there may not be sufficient assets remaining to pay amounts due on any or all of
the Debentures then outstanding. The Debentures also are effectively
subordinated in right of payment to all the liabilities, including trade
payables, of the Company's subsidiaries. The Indenture does not prohibit or
limit the incurrence of Senior Indebtedness by the Company or the incurrence of
other indebtedness and other liabilities by the Company or its subsidiaries, and
the incurrence of additional indebtedness and other liabilities by the Company
or its subsidiaries could adversely affect the Company's ability to pay its
obligations with respect to the Debentures. As of March 31, 1998, the Company
had no indebtedness outstanding that would have constituted Senior Indebtedness,
and as of the same date the Company's subsidiaries had approximately $[ ]
million of indebtedness and other liabilities outstanding (excluding
intercompany liabilities and liabilities of a type not required to be reflected
on a balance sheet in accordance with generally accepted accounting principles)
to which the Debentures would have been effectively subordinated. The Company
anticipates that from time to time it will incur indebtedness, including Senior
Indebtedness, and that it and its subsidiaries will from time to time incur
other additional indebtedness and liabilities. See "Description of Debentures
- --Subordination of Debentures."

        Limitations on Repurchases and Redemptions of Debentures. On February
13, 2003, February 13, 2008 and February 13, 2013 (each, a "Purchase Date"), the
Company will become obligated to purchase, at the option of the holder thereof,
any outstanding Debenture, subject to certain conditions. In addition, upon a
Fundamental Change (as defined), each holder of the Debentures will have certain
rights, at the holder's option, to require the Company to redeem all or a
portion of such holder's Debentures. There can be no assurance that the Company
would have sufficient funds to pay the repurchase price on any Purchase Date (in
which case, the Company could be required to issue shares of Common Stock to pay
the repurchase price at valuations based on then prevailing market prices) or,
in the event of a Fundamental Change, the redemption price for all the
Debentures tendered by the holders thereof. Any future credit agreements or
other agreements relating to other indebtedness (including Senior Indebtedness)
to which the Company becomes a party may contain restrictions or prohibitions on
the repurchase or redemption of the Debentures. In the event a Purchase Date or
a Fundamental Change occurs at a time when the Company is prohibited from
repurchasing or redeeming the Debentures, the Company could


                                      -20-

<PAGE>   24

seek the consent of its then existing lenders to repurchase or redeem the
Debentures or could attempt to refinance the borrowings that contain such
prohibition. If the Company does not obtain such a consent or repay such
borrowings, the Company would remain prohibited from repurchasing the Debentures
or redeeming the Debentures. In such case, the Company's failure to repurchase
or redeem Debentures required to be repurchased or redeemed under the terms of
the Indenture would constitute an Event of Default under the Indenture and would
likely constitute a default under the terms of any other indebtedness of the
Company outstanding at such time. In such circumstances, or if a Fundamental
Change would in and of itself constitute an event of default under Senior
Indebtedness then outstanding, the subordination provisions in the Indenture
would likely prohibit or restrict payments to the holders of Debentures. The
term "Fundamental Change" is limited to certain specified transactions and does
not include all events that could adversely affect the Company's financial
condition or operating results. The requirement that the Company offer to redeem
the Debentures upon a Fundamental Change will not necessarily protect holders of
the Debentures in the event of a highly leveraged transaction, reorganization,
merger or similar transaction involving the Company. See "Description of
Debentures -- Redemption at Option of the Holder Upon a Fundamental Change."

        Absence of Public Market for the Debentures. The Debentures were issued
in February 1998 in a private placement to a small number of institutional
buyers. The Debentures issued in the initial private placement have been
designated for trading on the Portal Market. Debentures sold pursuant to this
Prospectus will not remain eligible for trading on the Portal Market. The
Company does not intend to list the Debentures on any national securities
exchange or on The Nasdaq Stock Market. There can be no assurance that an active
trading market for the Debentures will develop or, if one does develop, that it
will be maintained. If an active trading market for the Debentures fails to
develop or be sustained, the trading price of such Debentures could be adversely
affected, and holders of the Debentures may experience difficulty in reselling
the Debentures or may be unable to sell them at all. If a public trading market
develops for the Debentures, future trading prices of the Debentures will depend
upon many factors, including, among other things, prevailing interest rates and
the market price of the shares of Common Stock.

        Initial Ratings Risks. The Company believes it is likely that one or
more rating agencies may rate the Debentures. There can be no assurance that any
such agency or agencies will rate the Debentures or, if they do, what rating or
ratings they will assign to the Debentures. If one or more rating agencies
assign the Debentures a rating lower than generally expected by investors, such
event would likely have an adverse effect on the market price of the Debentures.

        Effect of Certain Provisional Anti-Takeover Effects of Certificate of
Incorporation, Bylaws and Delaware Law. The board of directors of the Company
has the authority to issue up to 5,000,000 shares of Preferred Stock and to
determine the price, rights, preferences, privileges and restrictions, including
voting rights, of those shares without any further vote of action by its
stockholders. The rights of the holders of Company Common Stock is subject to,
and may be adversely affected by, the rights of the holders of any Preferred
Stock that may be issued in the future. The issuance of Preferred Stock, while
providing desirable flexibility in connection with possible acquisitions and
other corporate purposes, could have the effect of making it more difficult for
a third party to acquire a majority of the outstanding voting stock. Further,
certain provisions of Delaware law and the Company's Certificate of
Incorporation and Bylaws, such as a classified board, could delay or make a more
difficult a merger, tender offer or proxy contest involving the Company. While
such provisions are intended to enable the Company's Board to maximize
stockholder value, they may have the effect of discouraging takeovers which
could be in the best interest of certain stockholders. There is no assurance
that such provisions will not have an adverse effect on the market value of the
Company's Common Stock.


                                      -21-

<PAGE>   25

                             SELLING SECURITYHOLDERS

        The Debentures were originally issued by the Company in a private
placement and were resold by the initial purchasers thereof to qualified
institutional buyers (within the meaning of Rule 144A under the Securities Act)
in transactions exempt from registration under the Securities Act, and in sales
outside the United States to persons other than U.S. persons in reliance upon
Regulation S under the Securities Act. The Debentures and the Conversion Shares
that may be offered pursuant to this Prospectus are offered by the Selling
Securityholders. The following table sets forth certain information as of April
14, 1998 concerning the principal amount of Debentures beneficially owned by
each Selling Securityholder and the number of Conversion Shares that may be
offered from time to time pursuant to this Prospectus.

<TABLE>
<CAPTION>
                                                           PRINCIPAL
                                                           AMOUNT OF
                                                         DEBENTURES AT
                                                            MATURITY                           NUMBER OF
                                                          BENEFICIALLY      PERCENTAGE OF      CONVERSION     PERCENTAGE OF
                                                           OWNED-THAT         DEBENTURES       SHARES THAT    COMMON STOCK
                     NAME                                  MAY BE SOLD       OUTSTANDING      MAY BE SOLD(1)  OUTSTANDING(2)
- -----------------------------------------------          --------------     -------------     --------------  --------------
<S>                                                      <C>                <C>               <C>             <C>
AAM - Zazove Institutional Income Fund, L.P.               $  5,080,000            *              28,915           *

Aim Balanced Fund                                          $  7,200,000            *              40,982           *

Alexandra Global Investment Fund 1                         $ 18,000,000          2.0%            102,456           *

Allstate Insurance Company                                 $  8,500,000            *              48,382           *

American Investors Life Insurance Company,
Inc.                                                       $  4,000,000            *              22,768           *

BancAmerica Robertson Stephens                             $ 10,435,000          1.2%             59,396           *

Baptist Health                                             $    443,000            *               2,521           *

Boston College Endowment Fund                              $    260,000            *               1,479           *

Boston Museum of Fine Art                                  $    189,000            *               1,075           *

BT Alex. Brown Incorporated                                $  4,500,000            *              25,614           *

BT Holdings                                                $  8,000,000            *              45,536           *

California Public Employees' Retirement
System                                                     $  4,965,357            *              28,262           *

Century National Insurance Co.                             $  1,000,000            *               5,692           *

Chrysler Corporation Master Retirement Trust               $  8,275,000            *              47,101           *
</TABLE>


                                      -22-
<PAGE>   26

<TABLE>
<CAPTION>
                                                           PRINCIPAL
                                                           AMOUNT OF
                                                         DEBENTURES AT
                                                            MATURITY                           NUMBER OF
                                                          BENEFICIALLY      PERCENTAGE OF      CONVERSION     PERCENTAGE OF
                                                           OWNED-THAT         DEBENTURES       SHARES THAT    COMMON STOCK
                     NAME                                  MAY BE SOLD       OUTSTANDING      MAY BE SOLD(1)  OUTSTANDING(2)
- -----------------------------------------------          --------------     -------------     --------------  --------------
<S>                                                      <C>                <C>               <C>             <C>
Chrysler Insurance Co.                                     $     40,000            *                 227           *

David Lipscomb University General
Endowment                                                  $    215,000            *               1,223           *

Delaware Group Premium Fund, Inc. 
Convertible Securities Series                              $    117,318            *                 667           *

Delta Air Lines Master Trust                               $  6,000,000            *              34,152           *

Deutsche Bank A.G                                          $ 59,750,000          6.8%            340,097           *

Deutsche Morgan Grenfell                                   $ 26,540,000          3.0%            151,065           *

Donaldson, Lufkin & Jenrette Securities Corp.              $  2,250,000            *              12,807           *

Dunham & Associates Fund II                                $    133,000            *                 757           *

Dunham & Associates Fund III                               $     70,000            *                 398           *

Employers Reinsurance Corp.                                $  3,000,000            *              17,076           *

Employers Reinsurance Corp.                                $    700,000            *               3,984           *

Equitable Life Assurance Seperate Account
Balanced                                                   $    385,000            *               2,191           *

Equitable Life Assurance Seperate Account
Convertibles                                               $  6,625,000            *              37,709           *

Equity Portfolio                                           $ 20,000,000          2.3%            113,840           *

Engineers Joint Pension Fund                               $    695,000            *               3,955           *

Fort Dearborn Life Insurance Co.                           $    350,000            *               1,992           *

The Frist Foundation                                       $    815,000            *               4,638           *

GPZ Trading LLC                                            $  3,000,000            *              17,076           *
</TABLE>


                                      -23-

<PAGE>   27

<TABLE>
<CAPTION>
                                                           PRINCIPAL
                                                           AMOUNT OF
                                                         DEBENTURES AT
                                                            MATURITY                           NUMBER OF
                                                          BENEFICIALLY      PERCENTAGE OF      CONVERSION     PERCENTAGE OF
                                                           OWNED-THAT         DEBENTURES       SHARES THAT    COMMON STOCK
                     NAME                                  MAY BE SOLD       OUTSTANDING      MAY BE SOLD(1)  OUTSTANDING(2)
- -----------------------------------------------          --------------     -------------     --------------  --------------
<S>                                                      <C>                <C>               <C>             <C>
General Motors Investment Management Corp.                 $ 25,000,000          2.8%             142,300           *

HBK Finance L.P.                                           $  6,990,000            *               39,787           *

HBK Offshore Fund Ltd.                                     $ 15,820,000          1.8%              90,047           *

Highbridge Capital Corporation                             $  6,825,000            *               38,847           *

Highbridge International LLC                               $ 46,000,000          5.2%             261,832           *

HSBC Securities Inc.                                       $  3,650,000            *               20,775           *

Hudson River Trust Balanced Account                        $  3,505,000            *               19,950           *

Hudson River Trust Growth and Income Fund                  $  5,270,000            *               29,996           *

Hudson River Trust Growth Investors                        $  2,770,000            *               15,767           *

IDS Life Special Income Fund                               $  4,000,000            *               22,768           *

Lehman Brothers Inc.                                       $ 13,000,000          1.5%              73,996           *

Mainstay Convertible Fund                                  $ 10,000,000          1.1%              56,920           *

Mainstay VP Convertible Portfolio                          $  1,000,000            *                5,692           *

Memphis Light, Gas and Water Retirement
Fund                                                       $  3,335,000            *               18,982           *

Merrill Lynch Insurance Group                              $    400,000            *                2,276           *

Merrill Lynch International LTD                            $ 77,000,000          8.7%             438,284           *

Merrill Lynch Pierce Fenner & Smith, Inc.                  $  9,035,000          1.0%              51,427           *

MFS Series Trust I - MFS Convertible
Securities Fund                                            $     20,000            *                  113           *

MFS Series Trust V - MFS Total Return Fund                 $  7,480,000            *               42,576           *
</TABLE>


                                      -24-

<PAGE>   28

<TABLE>
<CAPTION>
                                                           PRINCIPAL
                                                           AMOUNT OF
                                                         DEBENTURES AT
                                                            MATURITY                           NUMBER OF
                                                          BENEFICIALLY      PERCENTAGE OF      CONVERSION     PERCENTAGE OF
                                                           OWNED-THAT         DEBENTURES       SHARES THAT    COMMON STOCK
                     NAME                                  MAY BE SOLD       OUTSTANDING      MAY BE SOLD(1)  OUTSTANDING(2)
- -----------------------------------------------          --------------     -------------     --------------  --------------
<S>                                                      <C>                <C>               <C>             <C>
Millenium Trading Co., L.P.                                $     90,000            *                  512           *

Motors Insurance Corp.                                     $  3,500,000            *               19,922           *

Museum of Fine Arts, Boston                                $    270,000            *                1,536           *

New Hampshire State Retirement System                      $  1,100,000            *                6,261           *

New York Life Insurance and Annuity
Corporation                                                $  3,000,000            *               17,076           *

New York Life Insurance Company                            $ 28,000,000          3.2%             159,376           *

Nicholas Applegate Global Growth & Income                  $    180,000            *                1,024           *

Nicholas Applegate Income & Growth                         $  6,501,000            *               37,003           *

Northwestern Mutual Life Insurance Company (3)             $  1,000,000            *                5,692           *

OCM Convertible Trust                                      $ 12,060,000          1.4%              68,645           *

Occidental Petroleum                                       $    100,000            *                  569           *

Orrington International Fund Ltd.                          $  1,360,000            *                7,741           *

Orrington Investments Limited Partnership                  $  2,140,000            *               12,180           *

Oppenheimer Convertible Securities Fund                    $ 10,000,000          1.1%              56,920           *

Pacific Life Insurance Co.                                 $  2,500,000            *               14,230           *

Paloma Securities L.L.C                                    $  3,000,000            *               17,076           *

Partner Reinsurance Company Ltd.                           $    855,000            *                4,866           *

Promutual                                                  $    950,000            *                5,407           *

Putnam Balanced Retirement Fund                            $    500,000            *                2,846           *

Putnam Convertible Income-Growth Trust                     $  9,500,000          1.1%              54,074           *
</TABLE>


                                      -25-

<PAGE>   29

<TABLE>
<CAPTION>
                                                           PRINCIPAL
                                                           AMOUNT OF
                                                         DEBENTURES AT
                                                            MATURITY                           NUMBER OF
                                                          BENEFICIALLY      PERCENTAGE OF      CONVERSION     PERCENTAGE OF
                                                           OWNED-THAT         DEBENTURES       SHARES THAT    COMMON STOCK
                     NAME                                  MAY BE SOLD       OUTSTANDING      MAY BE SOLD(1)  OUTSTANDING(2)
- -----------------------------------------------          --------------     -------------     --------------  --------------
<S>                                                      <C>                <C>               <C>             <C>
Putnam Convertible Opportunities and Income
Trust                                                      $    500,000            *                2,846           *

Putnam Funds Trust - Putnam High Yield Total
Return Fund                                                $     80,000            *                  455           *

Raytheon Company Master Pension Trust                      $  4,140,000            *               23,564           *

Regence Blue Cross/Blue Shield of Idaho                    $    249,000            *                1,417           *

Regence Blue Cross/Blue Shield of Oregon                   $    421,000            *                2,396           *

Regence Blue Cross/Blue Shield of Utah                     $    132,000            *                  751           *

Regence Blue Cross/Blue Shield of Washington               $    698,000            *                3,973           *

Rhone-Poulenc Rorer Inc. Pension Plan                      $    390,000            *                2,219           *

Salomon Brothers Total Return Fund                         $  1,500,000            *                8,538           *

San Diego City Retirement                                  $  1,873,000            *               10,661           *

San Diego County Convertibles                              $  5,744,000            *               32,694           *

Shepherd Investments International, Ltd.                   $ 30,500,000          3.5%             173,606           *

Silverton International Fund Limited                       $  2,000,000            *               11,384           *

Smith Barney Inc.                                          $ 20,000,000          2.3%             113,840           *

Societe Generale                                           $ 14,750,000          1.7%              83,957           *

SoundShore Partners L.P.                                   $  8,000,000            *               45,536           *

South Dakota Retirement System                             $  2,500,000            *               14,230           *

State of Connecticut Combined Investment
Funds                                                      $ 10,370,000          1.2%              59,026           *
</TABLE>


                                      -26-

<PAGE>   30

<TABLE>
<CAPTION>
                                                           PRINCIPAL
                                                           AMOUNT OF
                                                         DEBENTURES AT
                                                            MATURITY                           NUMBER OF
                                                          BENEFICIALLY      PERCENTAGE OF      CONVERSION     PERCENTAGE OF
                                                           OWNED-THAT         DEBENTURES       SHARES THAT    COMMON STOCK
                     NAME                                  MAY BE SOLD       OUTSTANDING      MAY BE SOLD(1)  OUTSTANDING(2)
- -----------------------------------------------          --------------     -------------     --------------  --------------
<S>                                                      <C>                <C>               <C>             <C>
State Employees Retirement Plan of the State of
Delaware                                                   $  2,895,000            *               16,478           *

Symphony Asset Management, Inc.                            $  4,900,000            *               27,890           *

Teachers Insurance and Annuity Association of
America                                                    $  7,500,000            *               42,690           *

The TCW Group, Inc.                                        $ 23,195,000          2.6%             132,025           *

Tribeca Investments, LLC                                   $ 25,000,000          2.8%             142,300           *

University of Rochester                                    $    270,000            *                1,536           *

Vanguard Convertible Securities Fund, Inc.                 $  7,405,000            *               42,149           *

Van Kampen American Capital Harbor Fund                    $  5,525,000            *               31,448           *

Van Kampen American Capital Convertible
Securities Fund                                            $    975,000            *                5,549           *

Wake Forest University                                     $  1,412,000            *                8,037           *

Any other holder of Debentures or future                   $164,002,325         18.5%             933,501         1.3%
transferee, pledgee, donee or successor of or
from any such other holder (4)(5)
</TABLE>

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

 *   Less than 1%.

(1)  Assumes conversion of the full amount of Debentures held by such holder at
     the initial conversion rate of approximately 5.692 shares of Common Stock
     per $1,000 principal amount of Debentures; such conversion price is subject
     to adjustment as described under "Description of the Debentures--Conversion
     of Debentures." Accordingly, the number of shares of Common Stock issuable
     upon conversion of the Debentures may increase or decrease from time to
     time. Under the terms of the Indenture, fractional shares will not be
     issued upon conversion of the Debentures; cash will be paid in lieu of
     fractional shares, if any.

(2)  Computed in accordance with Rule 13d-3(d)(i) promulgated under the Exchange
     Act and based upon 71,718,576 shares of Common Stock outstanding as of
     March 31, 1998, treating as outstanding the number of Conversion Shares
     shown as being issuable upon the assumed conversion by the named holder of
     the full amount of such holder's Notes but not assuming the conversion of
     the Notes of any other holder.

(3)  Held in the Northwestern Mutual Life Insurance Company Group Annuity
     Separate Account.

(4)  Information concerning other Selling Securityholders will be set forth in
     supplements to this Prospectus from time to time, if required.


                                      -27-

<PAGE>   31

(5)  Assumes that any other holders of Debentures, or any future transferees,
     pledgees, donees or successors of or from any such other holders of
     Debentures, do not beneficially own any Common Stock other than the Common
     Stock issuable upon conversion of the Debentures at the initial conversion
     rate.

        The preceding table has been prepared based upon the information
furnished to the Company by the Selling Securityholders named therein.

        The Selling Securityholders identified above may have sold, transferred
or otherwise disposed of, in transactions exempt from the registration
requirements of the Securities Act, all or a portion of their Debentures since
the date on which the information in the preceding table is presented.
Information concerning the Selling Securityholders may change from time to time
and any such changed information will be set forth in supplements to this
Prospectus if and when necessary. Because the Selling Securityholders may offer
all or some of the Debentures that they hold and/or Conversion Shares pursuant
to the offering contemplated by this Prospectus, no estimate can be given as to
the amount of the Debentures or Conversion Shares that will be held by the
Selling Securityholders upon the termination of this offering. See "Plan of
Distribution."


                                      -28-

<PAGE>   32

                            DESCRIPTION OF DEBENTURES

        The Debentures are issued under an indenture to be dated as of February
13, 1998 (the "Indenture"), between the Company and State Street Bank and Trust
Company of California, N.A., as trustee (the "Trustee"). A copy of the form of
Indenture and Registration Rights Agreement is available from the Trustee upon
request by a registered holder of the Debentures. The following summaries of
certain provisions of the form of Debenture, the Indenture and the Registration
Rights Agreement do not purport to be complete and are subject to, and are
qualified in their entirety by reference to, all the provisions of the form of
Debenture, the Indenture and the Registration Rights Agreement, including the
definitions therein of certain terms that are not otherwise defined in this
Prospectus. Wherever particular provisions or defined terms of the Indenture (or
of the form of Debenture which is a part thereof) or Registration Rights
Agreement are referred to, such provisions or defined terms are incorporated
herein by reference. As used in this "Description of Debentures," the "Company"
refers to Networks Associates, Inc. and does not, unless the context otherwise
indicates, include its subsidiaries.

GENERAL

        The Debentures are unsecured obligations of the Company limited to
$885,500,000 aggregate principal amount at maturity and will mature on February
13, 2018.

        The Debentures are offered at a substantial discount from their
principal amount at maturity. See "Certain Federal Income Tax Considerations."
There are no periodic payments of interest on the Debentures. The calculation of
the accrual of Original Issue Discount (the difference between the Issue Price
of the Debentures and the principal amount at maturity of a Debenture) in the
period during which a Debenture remains outstanding is on a semi-annual bond
equivalent basis using a year composed of twelve 30-day months; such accrual
will commence on the Issue Date of the Debentures. Maturity, conversion,
purchase by the Company at the option of a holder or redemption of a Debenture
will cause Original Issue Discount and interest, if any, to cease to accrue on
such Debenture, under the terms and subject to the conditions of the Indenture.
The Company may not reissue a Debenture that has matured or been converted,
purchased by the Company at the option of a holder, redeemed or otherwise
canceled (except for registration of transfer, exchange or replacement thereof).

        The principal amount at maturity of each Debenture is payable at the
office or agency of the paying agent, initially the Trustee, in the Borough of
Manhattan, The City of New York, or any other office of the paying agent
maintained for such purpose. Debentures may be presented for conversion or
exchange into Common Stock at the office of the conversion agent and Debentures
in definitive form may be presented for exchange for other Debentures or
registration of transfer at the office of the registrar, each such agent
initially being the Trustee. The Company will not charge a service charge for
any registration of transfer or exchange of Debentures; however, the Company may
require payment by a holder of a sum sufficient to cover any tax, assessment or
other governmental charge payable in connection therewith.

FORM, DENOMINATION AND REGISTRATION

        The Debentures are issued in fully registered form, without coupons, in
denominations of $1,000 principal amount at maturity and multiples thereof.

        Global Debenture; Book-Entry Form. Debentures are evidenced by a global
Debenture (the "Global Debenture"), which has been deposited with, or on behalf
of, The Depository Trust Company, New York, New York ("DTC") and registered in
the name of Cede & Co. ("Cede") as DTC's nominee. Except as set forth below, the
Global Debenture may be transferred, in whole or in part, only to another
nominee of DTC or to a successor of DTC or its nominee.

        Debentures initially may be purchased by "qualified institutional
buyers" as defined in Rule 144A under the Securities Act ("QIBs"). QIBs may hold
their interests in the Global Debenture directly through DTC, or indirectly
through organizations which are participants in DTC (the "Participants").
Transfers between Participants are effected in the ordinary way in accordance
with DTC rules and are settled in clearing house funds. The laws of some states
require that certain persons take physical delivery of securities in definitive
form. Consequently, the ability to transfer beneficial interests in the Global
Debenture to such persons may be limited.


                                      -29-

<PAGE>   33

        QIBs may beneficially own interests in the Global Debenture held by DTC
only through Participants or certain banks, brokers, dealers, trust companies
and other parties that clear through or maintain a custodial relationship with a
Participant, either directly or indirectly ("Indirect Participants"). So long as
Cede, as the nominee of DTC, is the registered owner of the Global Debenture,
Cede for all purposes is considered the sole holder of the Global Debenture.
Except as provided below, owners of beneficial interests in the Global Debenture
are not entitled to have certificates registered in their names, will not
receive or be entitled to receive physical delivery of certificates in
definitive form, and are not considered the holders thereof.

        Payment of Original Issue Discount and interest (if any) on and the
redemption price and the purchase price of the Global Debenture has been made to
Cede, the nominee for DTC, as the registered owner of the Global Debenture by
wire transfer of immediately available funds. Neither the Company, the Trustee
nor any paying agent will have any responsibility or liability for any aspect of
the records relating to or payments made on account of beneficial ownership
interests in the Global Debenture or for maintaining, supervising or reviewing
any records relating to such beneficial ownership interests.

        The Company has been informed by DTC that, with respect to payment of
interest (if any) on and the redemption price or the purchase price of the
Global Debenture, DTC's practice is to credit Participants' accounts on the
payment date therefor with payments in amounts proportionate to their respective
beneficial interests in the Debentures represented by the Global Debenture as
shown on the records of DTC (adjusted as necessary so that such payments are
made with respect to whole Debentures only), unless DTC has reason to believe
that it will not receive payment on such payment date. Payments by Participants
to owners of beneficial interests in Debentures represented by the Global
Debenture held through such Participants is the responsibility of such
Participants, as is now the case with securities held for the accounts of
customers registered in "street name."

        Holders who desire to convert their Debentures into Common Stock should
contact their brokers or other Participants or Indirect Participants to obtain
information on procedures, including proper forms and cut-off times, for
submitting such request.

        Because DTC can only act on behalf of Participants, who in turn act on
behalf of Indirect Participants and certain banks, the ability of a person
having a beneficial interest in the Debentures represented by the Global
Debenture to pledge such interest to persons or entities that do not participate
in the DTC system, or otherwise take actions in respect of such interest, may be
affected by the lack of a physical certificate evidencing such interest.

        Neither the Company nor the Trustee (or any registrar, paying agent or
conversion agent under the Indenture) will have any responsibility for the
performance by DTC or its Participants or Indirect Participants of their
respective obligations under the rules and procedures governing their
operations. DTC has advised the Company that it will take any action permitted
to be taken by a holder of Debentures (including, without limitation, the
presentation of Debentures for conversion as described below) only at the
direction of one or more Participants to whose account with DTC interests in the
Global Debenture are credited and only in respect of the principal amount of the
Debentures represented by the Global Debenture as to which such Participant or
Participants has or have given such direction.

        DTC has advised the Company as follows: DTC is a limited purpose trust
company organized under the laws of the State of New York, a member of the
Federal Reserve System, a "clearing corporation" within the meaning of the
Uniform Commercial Code and a "clearing agency" registered pursuant to the
provisions of Section 17A of the Exchange Act. DTC was created to hold
securities for its Participants and to facilitate the clearance and settlement
of securities transactions between Participants through electronic book-entry
changes to accounts of its Participants, thereby eliminating the need for
physical movement of certificates. Participants include securities brokers and
dealers, banks, trust companies and clearing corporations and may include
certain other organizations such as the Initial Purchaser. Certain of such
Participants (or their representatives), together with other entities, own DTC.
Indirect access to the DTC system is available to others such as banks, brokers,
dealers and trust companies that clear through, or maintain a custodial
relationship with a Participant, either directly or indirectly.

        Although DTC has agreed to the foregoing procedures in order to
facilitate transfers of interests in the Global Debenture among participants of
DTC, DTC is under no obligation to perform or continue to perform such
procedures, and


                                      -30-

<PAGE>   34

such procedures may be discontinued at any time. If DTC is at any time unwilling
or unable to continue as depositary and a successor depositary is not appointed
by the Company within 90 days, the Company will cause Debentures to be issued in
definitive form in exchange for the Global Debenture.

        Conveyance of notices and other communications by DTC to Participants,
by Participants to Indirect Participants and Indirect Participants to beneficial
owners are governed by arrangements among them, subject to any statutory or
regulatory requirements that may be in effect from time to time. Redemption
notices shall be sent to Cede. If less than all of the Debentures are redeemed,
DTC will reduce the amount of the interest of each Participant in such
Debentures in accordance with its procedures.

        Certificated Debentures. Certificated Debentures are issued in exchange
for Debentures represented by the Global Debenture if a depositary is unwilling
or unable to continue as a depositary for the Global Debenture as set forth
above under "Global Debenture; Book-Entry Form."

        Restrictions on Transfer; Legends. The Debentures are subject to certain
transfer restrictions as described below under "Transfer Restrictions" and
certificates evidencing the Debentures will bear a legend to such effect.

CONVERSION OF DEBENTURES

        A holder of a Debenture may convert it into Common Stock of the Company
at any time after 90 days following the latest date of original issuance of the
Debentures through the close of business on February 13, 2018; provided that if
a Debenture is called for redemption, the holder may convert it only until the
close of business on the last trading day prior to the Redemption Date unless
the Company defaults in the payment of the redemption price. A Debenture in
respect of which a holder has delivered a Purchase Notice exercising the option
of such holder to require the Company to purchase such Debenture may be
converted only if such notice is withdrawn in accordance with the terms of the
Indenture. Similarly, a Debenture in respect of which a holder is exercising its
option to require redemption upon a Fundamental Change may be converted only if
such holder withdraws its election to exercise its option in accordance with the
terms of the Indenture. A holder may convert such holder's Debentures in part so
long as such part is $1,000 principal amount at maturity or a multiple thereof.

        The initial Conversion Rate is 5.692 shares of Common Stock per $1,000
principal amount at maturity of Debentures, subject to adjustment upon the
occurrence of certain events, as described below. A holder entitled to a
fractional share of Common Stock shall receive cash equal to the then current
market value of such fractional share.

        On conversion of a Debenture, a holder will not receive any cash payment
representing accrued Original Issue Discount. The Company's delivery to the
holder of the fixed number of shares of Common Stock into which the Debenture is
convertible (together with the cash payment, if any, in lieu of fractional
Common Stock) is deemed to satisfy the Company's obligation to pay the principal
amount of the Debenture including the accrued Original Issue Discount
attributable to the period from the Issue Date to the Conversion Date. Thus, the
accrued Original Issue Discount is deemed to be paid in full rather than
canceled, extinguished or forfeited. The Conversion Rate will not be adjusted at
any time during the term of the Debentures for such accrued Original Issue
Discount.

        To convert a certificated Debenture into Common Stock, a holder must (i)
complete and manually sign the conversion notice on the back of the Debenture
(or complete and manually sign a facsimile thereof) and deliver such notice to
the conversion agent, (ii) surrender the Debenture to the conversion agent,
(iii) if required, furnish appropriate endorsements and transfer documents, and
(iv) if required, pay all transfer or similar taxes. Pursuant to the Indenture,
the date on which all of the foregoing requirements have been satisfied is the
Conversion Date.

        The Conversion Rate is subject to adjustment under formulae as set forth
in the Indenture in certain events, including: (i) the issuance of Common Stock
of the Company as a dividend or distribution on the Common Stock; (ii) certain
subdivisions and combinations of the Common Stock; (iii) the issuance to all
holders of Common Stock of certain rights or warrants to purchase Common Stock;
(iv) the distribution to all holders of Common Stock of capital stock (other
than Common Stock) or evidences of indebtedness of the Company or of assets
(including securities; but excluding those rights,


                                      -31-

<PAGE>   35

warrants, dividends and distributions referred to above or paid in cash); (v)
distributions consisting of cash, excluding any quarterly cash dividend on the
Common Stock to the extent that the aggregate cash dividend per share of Common
Stock in any quarter does not exceed the greater of (x) the amount per share of
Common Stock of the next preceding quarterly cash dividend on the Common Stock
to the extent that such preceding quarterly dividend did not require an
adjustment of the Conversion Rate pursuant to this clause (v) (as adjusted to
reflect subdivisions or combinations of the Common Stock), and (y) 3.75 percent
of the average of the last reported sales price of the Common Stock during the
ten trading days immediately prior to the date of declaration of such dividend,
and excluding any dividend or distribution in connection with the liquidation,
dissolution or winding up of the Company; (vi) payment in respect of a tender
offer or exchange offer by the Company or any Subsidiary of the Company for the
Common Stock to the extent that the cash and value of any other consideration
included in such payment per share of Common Stock exceeds the Current Market
Price (as defined) per share of Common Stock on the trading day next succeeding
the last date on which tenders or exchanges may be made pursuant to such tender
or exchange offer; and (vii) payment in respect of a tender offer or exchange
offer by a person other than the Company or any Subsidiary (as defined) of the
Company in which, as of the closing date of the offer, the Board of Directors is
not recommending rejection of the offer. If an adjustment is required to be made
as set forth in clause (v) above as a result of a distribution that is a
quarterly dividend, such adjustment would be based upon the amount by which such
distribution exceeds the amount of the quarterly cash dividend permitted to be
excluded pursuant to clause (v) above. If an adjustment is required to be made
as set forth in clause (v) above as a result of a distribution that is not a
quarterly dividend, such adjustment would be based upon the full amount of the
distribution. The adjustment referred to in clause (vii) above will only be made
if the tender offer or exchange offer is for an amount that increases the
offeror's ownership of Common Stock to more than 25% of the total shares of
Common Stock outstanding, and if the cash and value of any other consideration
included in such payment per share of Common Stock exceeds the Current Market
Price per share of Common Stock on the business day next succeeding the last
date on which tenders or exchanges may be made pursuant to such tender or
exchange offer. The adjustment referred to in clause (vii) above will generally
not be made, however, if as of the closing of this offer, the offering documents
with respect to such offer disclose a plan or an intention to cause the Company
to engage in a consolidation or merger of the Company or a sale of all or
substantially all of the Company's assets.

        No adjustment in the Conversion Rate is required unless such adjustment
would require a change of at least 1% in the rate then in effect; provided that
any adjustment that would otherwise be required to be made shall be carried
forward and taken into account in any subsequent adjustment. Except as stated
above, the Conversion Rate will not be adjusted for the issuance of Common Stock
or any securities convertible into or exchangeable for Common Stock or carrying
the right to purchase any of the foregoing.

        In the case of (i) any reclassification of the Common Stock, or (ii) a
consolidation or merger involving the Company or a sale or conveyance to another
corporation of the property and assets of the Company as an entirety or
substantially as an entirety, in each case as a result of which holders of
Common Stock shall be entitled to receive stock, securities, other property or
assets (including cash) with respect to or in exchange for such Common Stock,
the holders of the Debentures then outstanding are entitled thereafter to
convert such Debentures into the kind and amount of shares of stock, securities
or other property or assets (including cash) which they would have owned or been
entitled to receive upon such reclassification, consolidation, merger, sale or
conveyance had such Debentures been converted immediately prior to such
reclassification, consolidation, merger, sale or conveyance assuming that a
holder of Debentures would not have exercised any rights of election as to the
stock, securities or other property or assets (including cash) receivable in
connection therewith.

        In the event of a taxable distribution to holders of Common Stock or in
certain other circumstances requiring an adjustment to the Conversion Rate, the
holders of Debentures may, in certain circumstances, be deemed to have received
a distribution subject to United States income tax as a dividend; in certain
other circumstances, the absence of such an adjustment may result in a taxable
dividend to the holders of Common Stock. See "Certain Federal Income Tax
Considerations" below.

        The Company from time to time may to the extent permitted by law
increase the Conversion Rate by any amount for any period of at least 20 days,
in which case the Company shall give at least 15 days' notice of such increase,
if the Board of Directors has made a determination that such increase would be
in the best interests of the Company, which determination shall be conclusive.
The Company may, at its option, make such increases in the Conversion Rate, in
addition to those set forth above, as the Board of Directors deems advisable to
avoid or diminish any income tax to holders of Common Stock


                                      -32-

<PAGE>   36

resulting from any dividend or distribution of stock (or rights to acquire
stock) or from any event treated as such for income tax purposes. See "Certain
Federal Income Tax Considerations."

REDEMPTION OF DEBENTURES AT THE OPTION OF THE COMPANY

        No sinking fund is provided for the Debentures. Prior to February 13,
2003, the Debentures will not be redeemable at the option of the Company.
Beginning on February 13, 2003, the Company may redeem the Debentures for cash
as a whole at any time, or from time to time in part, upon not less than 30
days' nor more than 60 days' notice of redemption given by mail to holders of
Debentures. The Debentures are redeemable in multiples of $1,000 principal
amount at maturity.

        The table below shows Redemption Prices of Debentures per $1,000
principal amount at maturity thereof at February 13, 2003 and at each February
thereafter prior to maturity and at maturity on February 13, 2018, which prices
reflect the accrued Original Issue Discount calculated to each such date. The
Redemption Price of a Debenture redeemed between such dates would include an
additional amount reflecting the additional Original Issue Discount accrued
since the next preceding date in the table to the actual Redemption Date.

<TABLE>
<CAPTION>
                                                          (1)                (2)             (3)
                                                                      ACCRUED ORIGINAL    REDEMPTION
                                                       DEBENTURE       ISSUE DISCOUNT        PRICE
                  REDEMPTION DATE                     ISSUE PRICE         AT 4.75%          (1)+(2)
- ---------------------------------------------------   -----------     ----------------    -----------
<S>                                                   <C>             <C>                 <C>      
February 13, 2003..................................      $391.06            $103.46       $  494.52
February 13, 2004..................................       391.06             127.23          518.29
February 13, 2005..................................       391.06             152.14          543.20
February 13, 2006..................................       391.06             178.25          569.31
February 13, 2007..................................       391.06             205.61          596.67
February 13, 2008..................................       391.06             234.29          625.35
February 13, 2009..................................       391.06             264.34          655.40
February 13, 2010..................................       391.06             295.85          686.91
February 13, 2011..................................       391.06             328.86          719.92
February 13, 2012..................................       391.06             363.46          754.52
February 13, 2013..................................       391.06             399.73          790.79
February 13, 2014..................................       391.06             437.74          828.80
February 13, 2015..................................       391.06             477.57          868.63
February 13, 2016..................................       391.06             519.32          910.38
February 13, 2017..................................       391.06             563.08          954.14
February 13, 2018..................................       391.06             608.94        1,000.00
</TABLE>

        If less than all of the outstanding Debentures held in certificated form
are to be redeemed, the Trustee shall select the Debentures held in such form to
be redeemed in principal amounts at maturity of $1,000 or multiples thereof by
lot, pro rata or by another method the Trustee considers fair and appropriate
(as long as such method is not prohibited by the rules of any stock exchange on
which the Debentures are then listed). If a portion of a holder's certificated
Debentures is selected for partial redemption and such holder converts a portion
of such certificated Debentures, such converted portion shall be deemed to be
the portion selected for redemption. Debentures registered in the name of DTC or
its nominee will be redeemed pro rata as described under "-- Form, Denomination
and Registration -- Global Debenture; Book-Entry Form."

REDEMPTION AT OPTION OF THE HOLDER UPON A FUNDAMENTAL CHANGE

        If a Fundamental Change (as defined) occurs at any time prior to
February 13, 2018, each holder of Debentures shall have the right, at the
holder's option, to require the Company to redeem any or all of such holder's
Debentures on the date (the "Repurchase Date") that is 45 days after the date of
the Company's notice of such Fundamental Change. The Debentures are redeemable
in multiples of $1,000 principal amount at maturity.


                                      -33-

<PAGE>   37

        The Company shall redeem such Debentures at a price (the "Fundamental
Change Redemption Price") equal to the Issue Price plus accrued Original Issue
Discount to the Repurchase Date; provided that if the Applicable Price (as
defined) in connection with the Fundamental Change is less than the Reference
Market Price (as defined), the Company shall redeem such Debentures at a price
equal to the foregoing Fundamental Change Redemption Price multiplied by the
fraction obtained by dividing the Applicable Price by the Reference Market
Price.

        The Company shall mail to all holders of record of the Debentures a
notice of the occurrence of a Fundamental Change and of the redemption right
arising as a result thereof on or before the tenth day after the occurrence of
such Fundamental Change. The Company shall deliver to the Trustee a copy of such
notice. To exercise the redemption right, holders of Debentures must deliver, on
or before the 30th day after the date of the Company's notice of a Fundamental
Change, the Debentures to be so redeemed, duly endorsed for transfer, together
with the form entitled "Option to Elect Redemption Upon a Fundamental Change" on
the reverse thereof duly completed, to the Company (or an agent designated by
the Company for such purpose).

        The term "Fundamental Change" means the occurrence of any transaction or
event in connection with which all or substantially all Common Stock shall be
exchanged for, converted into, acquired for or constitute solely the right to
receive consideration (whether by means of an exchange offer, liquidation,
tender offer, consolidation, merger, combination, reclassification,
recapitalization or otherwise) which is not all or substantially all Common
Stock listed (or, upon consummation of or immediately following such transaction
or event, which will be listed) on a United States national securities exchange
or approved for quotation on the Nasdaq National Market or any similar United
States system of automated dissemination of quotations of securities prices. The
term "Applicable Price" means (i) in the event of a Fundamental Change in which
the holders of the Common Stock receive only cash, the amount of cash received
by the holder of one share of Common Stock and (ii) in the event of any other
Fundamental Change, the average of the reported last sale price for the Common
Stock during the ten trading days prior to the record date for the determination
of the holders of Common Stock entitled to receive cash, securities, property or
other assets in connection with such Fundamental Change, or, if there is no such
record date, the date upon which the holders of the Common Stock shall have the
right to receive such cash, securities, property or other assets in connection
with the Fundamental Change. The term "Reference Market Price" shall initially
mean $38.17 (which is equal to 66 2/3% of the last sale price of the Common
Stock as reflected on the cover page of this Prospectus) and in the event of any
adjustment to the Conversion Rate pursuant to the provisions of the Indenture,
the Reference Market Price shall also be adjusted so that the Reference Market
Price shall be equal to the initial Reference Market Price multiplied by a
fraction the numerator of which is the Conversion Rate specified on the cover of
this Prospectus (without regard to any adjustment thereto) and the denominator
of which is the Conversion Rate following such adjustment.

        The Company will comply with the provisions of Rule 13e-4 and any other
tender offer rules under the Exchange Act which may then be applicable in
connection with the redemption rights of Debenture holders in the event of a
Fundamental Change.

        The redemption rights of the holders of Debentures could discourage a
potential acquiror of the Company. The Fundamental Change redemption feature,
however, is not the result of management's knowledge of any specific effort to
obtain control of the Company by means of a merger, tender offer, solicitation
or otherwise, or part of a plan by management to adopt a series of anti-takeover
provisions.

        The term "Fundamental Change" is limited to certain specified
transactions and may not include other events that might adversely affect the
financial condition of the Company, nor would the requirement that the Company
offer to repurchase the Debentures upon a Fundamental Change necessarily afford
the holders of the Debentures protection in the event of a highly leveraged
transaction, reorganization, merger or similar transaction involving the
Company.

        No Debentures may be redeemed at the option of holders upon a
Fundamental Change if there has occurred and is continuing an Event of Default
described under "-- Events of Default; Notice and Waiver" below (other than a
default in the payment of the Fundamental Change Redemption Price with respect
to such Debentures). In the event of a Fundamental Change and exercise by
holders of the Debentures of their associated rights to require the Company to
redeem all or a portion of their Debentures, there can be no assurance that the
Company would have sufficient funds to pay the redemption price for all the
Debentures tendered by the holders thereof. Any future credit agreements or
other agreements relating to indebtedness


                                      -34-

<PAGE>   38

(including Senior Indebtedness) to which the Company becomes a party may provide
that a Fundamental Change would constitute an event of default thereunder and
also provide that the maturing of any obligation to redeem the Debentures would
constitute an event of default and cause the subordination provisions in the
Indenture to apply, preventing redemption of the Debentures until Senior
Indebtedness is paid in full. Any such provisions could restrict or prohibit the
redemption of the Debentures. In the event a Fundamental Change occurs at a time
when the Company is prohibited from redeeming the Debentures, the Company could
seek the consent of its then existing lenders to redeem the Debentures or could
attempt to refinance the borrowings that contain such prohibition. If the
Company does not obtain such a consent or repay such borrowings, the Company
would remain prohibited from redeeming the Debentures. In such case, the
Company's failure to redeem Debentures required to be redeemed under the terms
of the Indenture would constitute an Event of Default under the Indenture and
would likely constitute a default under the terms of any other indebtedness of
the Company outstanding at such time. In such circumstances, or if a Fundamental
Change would in and of itself constitute an event of default under agreements
governing Senior Indebtedness then outstanding, the subordination provisions in
the Indenture would likely prohibit or restrict payments to the holders of
Debentures.

PURCHASE OF DEBENTURES AT THE OPTION OF THE HOLDER

        On February 13, 2003, February 13, 2008 and February 13, 2013 (each, a
"Purchase Date"), the Company will become obligated to purchase, at the option
of the holder thereof, any outstanding Debenture for which a written Purchase
Notice has been delivered by the holder to the office of the paying agent
(initially the Trustee) at any time from the opening of business on the date
that is 20 Business Days (as defined) prior to such Purchase Date until the
close of business on such Purchase Date and for which such Purchase Notice has
not been withdrawn, subject to certain additional conditions.

        The Purchase Notice shall state (i) the certificate numbers of the
Debentures to be delivered by the holder thereof for purchase by the Company;
(ii) the portion of the principal amount at maturity of Debentures to be
purchased, which portion must be $1,000 or a multiple thereof; (iii) that such
Debentures are to be purchased by the Company pursuant to the applicable
provisions of the Debentures; and (iv) in the event the Company elects, pursuant
to the Company Notice (as defined), to pay the Purchase Price to be paid as of
such Purchase Date in Common Stock, in whole or in part, but such Purchase Price
is ultimately to be paid to such holder entirely in cash because any of the
conditions to payment of the Purchase Price (or portion thereof) in Common Stock
is not satisfied by the Purchase Date, as described below, whether such holder
elects (x) to withdraw such Purchase Notice as to some or all of the Debentures
to which it relates (stating the principal amount at maturity and certificate
numbers of the Debentures as to which such withdrawal shall relate), or (y) to
receive cash in respect of the entire Purchase Price for all Debentures subject
to such Purchase Notice. If the holder fails to indicate, in the Purchase Notice
and in any written notice of withdrawal relating to such Purchase Notice, such
holder's choice with respect to the election described in clause (iv) above,
such holder shall be deemed to have elected to receive cash in respect of the
entire Purchase Price for all Debentures subject to such Purchase Notice in such
circumstances. For a discussion of the tax treatment of a holder receiving cash
or Common Stock pursuant to its election to tender its Debentures to the Company
on a Purchase Date, see "Certain Federal Income Tax Considerations."

        Any Purchase Notice may be withdrawn by the holder by a written notice
of withdrawal delivered to the paying agent prior to the close of business on
the Purchase Date. The notice of withdrawal shall state the principal amount at
maturity and the certificate numbers of the Debentures as to which the
withdrawal notice relates and the principal amount at maturity, if any, which
remains subject to the Purchase Notice.

        The Purchase Price payable in respect of a Debenture shall be equal to
the Issue Price plus accrued Original Issue Discount to the Purchase Date. The
table below shows the Purchase Prices of a Debenture as of the specified
Purchase Dates. The Company may elect to pay the Purchase Price payable as of
any Purchase Date in cash or Common Stock or any combination thereof.


                                      -35-

<PAGE>   39

<TABLE>
<CAPTION>
  PURCHASE DATE                                    PRICE
  -------------                                    -----
<S>                                                <C>   
February 13, 2003............................      494.52
February 13, 2008............................      625.35
February 13, 2013............................      790.79
</TABLE>

        If the Company elects to pay the Purchase Price, in whole or in part, in
Common Stock, the number of shares to be delivered in respect of the portion of
the Purchase Price to be paid in Common Stock shall be equal to such portion of
the Purchase Price divided by the Market Price (as defined) of the Common Stock.
However, no fractional Common Stock will be delivered upon any purchase by the
Company of Debentures through the delivery of Common Stock in payment, in whole
or in part, of the Purchase Price. Instead, the Company will pay cash based on
the Market Price for all fractional Common Stock.

        The Company will give notice (the "Company Notice") not less than 20
Business Days prior to the Purchase Date (the "Company Notice Date") to all
holders at their addresses shown in the register of the registrar (and to
beneficial owners as required by applicable law) stating, among other things,
whether the Company will pay the Purchase Price of the Debentures in cash or
Common Stock, or any combination thereof (specifying the percentage of each)
and, if the Company elects to pay in Common Stock, in whole or in part, the
method of calculating the Market Price of the Common Stock.

        The "Market Price" means the average of the Sale Prices (as defined) of
the Common Stock for the five trading day period ending on the third Business
Day prior to the applicable Purchase Date (if the third Business Day prior to
the applicable Purchase Date is a trading day or, if it is not a trading day,
then on the last trading day prior to such third Business Day), appropriately
adjusted to take into account the occurrence during the period commencing on the
first of such trading days during such five trading day period and ending on
such Purchase Date of certain events that would result in an adjustment of the
Conversion Rate under the Indenture with respect to the Common Stock. The "Sale
Price" of the Common Stock on any date means the closing per share sale price
(or if no closing sale price is reported, the average bid and ask prices or, if
more than one in either case, the average of the average bid and average ask
prices) on such date as reported in the composite transactions for the principal
United States securities exchange on which the Common Stock is traded or, if the
Common Stock is not listed on a United States national or regional stock
exchange, as reported by the National Association of Securities Dealers
Automated Quotation System. Because the Market Price of the Common Stock is
determined prior to the applicable Purchase Date, holders of Debentures bear the
market risk with respect to the value of the Common Stock to be received from
the date of determination of such Market Price to such Purchase Date. The
Company may elect to pay the Purchase Price in Common Stock only if the
information necessary to calculate the Market Price is reported in a daily
newspaper of national circulation.

        Upon determination of the actual number of shares of Common Stock in
accordance with the foregoing provisions, the Company will publish such
determination in a daily newspaper of national circulation.

        The Company's right to purchase Debentures with Common Stock is subject
to the satisfaction of various conditions, including: (i) the registration of
the Common Stock under the Securities Act, if required; and (ii) compliance with
other applicable federal and state securities laws, if any. If such conditions
are not satisfied by a Purchase Date, the Company will pay the Purchase Price of
the Debentures to be purchased on such Purchase Date entirely in cash. See
"Certain Federal Income Tax Considerations." The Company will comply with the
provisions of Rule 13e-4 and any other tender offer rules under the Exchange Act
which may then be applicable and will file a Schedule 13E-4 or any other
schedule required thereunder in connection with any offer by the Company to
purchase Debentures at the option of holders.

        Payment of the Purchase Price for a Debenture for which a Purchase
Notice has been delivered and not withdrawn is conditioned upon book-entry
transfer or delivery of such Debenture (together with necessary endorsements) to
the paying agent at its office in the Borough of Manhattan, The City of New
York, or any other office of the paying agent maintained for such purpose, at
any time (whether prior to, on or after the Purchase Date) after delivery of
such Purchase Notice. Payment of the Purchase Price for such Debenture will be
made promptly following the later of the Purchase Date or the time of book-entry
transfer or delivery of such Debenture. If the paying agent holds, in accordance
with the terms of the Indenture, money


                                      -36-

<PAGE>   40

or securities sufficient to pay the Purchase Price of such Debenture on the
Business Day following the Purchase Date, then, on and after such date, such
Debenture will cease to be outstanding and Original Issue Discount on such
Debenture will cease to accrue whether or not book-entry transfer of such
Debenture is made or such Debenture is delivered to the paying agent, and all
other rights of the holder shall terminate (other than the right to receive the
Purchase Price upon delivery of the Debenture).

        No Debentures may be purchased at the option of the holder for cash if
there has occurred (prior to, on or after the giving by the holders of such
Debentures of the required Purchase Notice) and is continuing an Event of
Default described under "Events of Default; Notice and Waiver" below (other than
a default in the payment of the Purchase Price with respect to such Debentures).

        If the Company becomes obligated to purchase any outstanding Debenture
on a Purchase Date, there can be no assurance that the Company would have
sufficient funds to pay the Purchase Price on that Purchase Date (in which case,
the Company could be required to issue shares of Common Stock to pay the
Purchase Price at valuations based on then prevailing market prices) for all the
Debentures tendered by the holders thereof. There can be no assurance that any
future credit agreements or other agreements relating to indebtedness (including
Senior Indebtedness) to which the Company becomes a party will not contain
prohibitions on or defaults with respect to the repurchase of the Debentures or
provide that prepayment or redemption would constitute an event of default. In
the event a Purchase Date occurs at a time when the Company is prohibited from
repurchasing the Debentures, the Company could seek the consent of its then
existing lenders to repurchase the Debentures or could attempt to refinance the
borrowings that contain such prohibition. If the Company does not obtain such a
consent or repay such borrowings, the Company would remain prohibited from
repurchasing the Debentures. The Company's failure to repurchase Debentures
required to be repurchased under the terms of the Indenture would constitute an
Event of Default under the Indenture and would likely constitute a default under
the terms of any other indebtedness of the Company outstanding at such time,
including Senior Indebtedness. In such circumstances, the subordination
provisions in the Indenture would likely prohibit or restrict payments to the
holders of Debentures.

SUBORDINATION OF DEBENTURES

        The Indebtedness evidenced by the Debentures is subordinated to the
extent provided in the Indenture to the prior payment in full in cash or other
payment satisfactory to the holders of Senior Indebtedness of all existing and
future Senior Indebtedness. Such subordination will not prevent the occurrence
of any Event of Default under the Indenture.

        Upon any distribution of assets of the Company upon any dissolution,
winding up, voluntary or involuntary bankruptcy, insolvency, liquidation,
reorganization, receivership or similar proceeding relating to the Company or
its property, an assignment for the benefit of creditors or any marshaling of
the Company's assets or liabilities, the holders of Senior Indebtedness will be
entitled to receive payment in full, in cash or other payment satisfactory to
the holders of Senior Indebtedness, of all obligations due in respect of such
Senior Indebtedness before the holders of Debentures will be entitled to receive
any payment of the principal amount at maturity, Issue Price, accrued Original
Issue Discount, Redemption Price, Purchase Price, Fundamental Change Redemption
Price and interest, if any (including liquidated damages, if any) or other
payment in respect of the Debentures (a "Payment on the Debentures"), and until
all obligations with respect to Senior Indebtedness are paid in full in cash or
other payment satisfactory to the holders of Senior Indebtedness, any Payment on
the Debentures to which the holders of Debentures would be entitled shall be
made to the holders of Senior Indebtedness. By reason of the subordination, in
the event of the Company's dissolution, winding up, bankruptcy, liquidation,
reorganization or similar proceeding relating to the Company or its property, an
assignment for the benefit of creditors or any marshaling of the Company's
assets, holders of Senior Indebtedness may receive more, ratably, and the
holders of Debentures may receive less, ratably, than the other creditors of the
Company.

        In the event that the Debentures are declared due and payable prior to
their stated maturity by reason of the occurrence of an Event of Default, then
the Company is obligated to notify promptly holders of Senior Indebtedness of
such acceleration. The Company may not pay monies owed pursuant to the
Debentures until 120 days have passed after such acceleration occurs and may
thereafter pay the Debentures if the terms of the Indenture otherwise permit
payment at that time.


                                      -37-

<PAGE>   41

        The Company also may not make any Payment on the Debentures if (i) a
default in any payment obligations in respect of Senior Indebtedness occurs and
is continuing, without regard to any applicable period of grace (whether at
maturity or at a date fixed for payment or by declaration or otherwise) (each a
"payment default") or (ii) any other default occurs and is continuing with
respect to Designated Senior Indebtedness that permits holders of the Designated
Senior Indebtedness as to which such default relates to accelerate its maturity
and the Trustee receives a notice of such default (a "Payment Blockage Notice")
from the Company or from a representative for any issue of Designated Senior
Indebtedness. Payments on the Debentures may and shall be resumed (a) in case of
a payment default, the earlier of the date on which such default is cured or
waived in accordance with the terms of the governing instrument or ceases to
exist and (b) in case of a nonpayment default, the earlier of the date on which
such nonpayment default is cured or waived in accordance with the terms of the
governing instrument or ceases to exist or 179 days after the date on which the
applicable Payment Blockage Notice is received by the Trustee if the terms of
the Indenture otherwise permit payment at that time. No new period of payment
blockage may be commenced pursuant to a Payment Blockage Notice unless and until
365 days have elapsed since the initial effectiveness of the immediately prior
Payment Blockage Notice. No nonpayment default that existed or was continuing on
the date of delivery of any Payment Blockage Notice to the Trustee shall be, or
shall be made, the basis for a subsequent Payment Blockage Notice unless such
default shall have been cured or waived for a period of not less than 90 days
(it being acknowledged that (x) any action of the Company or any of its
Subsidiaries occurring subsequent to delivery of a Payment Blockage Notice that
would give rise to any event of default pursuant to any provision of Senior
Indebtedness under which an event of default previously existed (or was
continuing at the time of delivery of such Payment Blockage Notice) shall
constitute a new event of default for this purpose and (y) any breach of a
financial covenant giving rise to a nonpayment default for a period ending
subsequent to the date of delivery of the respective Payment Blockage Notice
shall constitute a new event of default for this purpose).

        The term "Senior Indebtedness" means the principal of, premium, if any,
interest (including all interest accruing subsequent to the commencement of any
bankruptcy or similar proceeding, whether or not a claim for post-petition
interest is allowable as a claim in any such proceeding), original issue
discount, rent and end of term payments payable on or in connection with, and,
to the extent not included in the foregoing, all amounts payable as fees, costs,
expenses, liquidated damages, indemnities, repurchase and other put obligations
and other amounts to the extent accrued or due on or in connection with,
Indebtedness (as defined) of the Company, whether outstanding on the date of the
Indenture or thereafter created, incurred, assumed, guaranteed or in effect
guaranteed by the Company (including all deferrals, renewals, extensions or
refundings of, or amendments, modifications or supplements to, the foregoing).
Notwithstanding the foregoing, the term Senior Indebtedness shall not include
(i) any Indebtedness of the Company that is not secured, (ii) Indebtedness
evidenced by the Debentures, (iii) Indebtedness of the Company to any subsidiary
of the Company, a majority of the voting stock of which is owned, directly or
indirectly, by the Company, (iv) accounts payable or other indebtedness to trade
creditors created or assumed by the Company in the ordinary course of business
and (v) any particular Indebtedness in which the instrument creating or
evidencing the same or the assumption or guarantee thereof expressly provides
that such Indebtedness shall not be senior in right of payment to, or is pari
passu with, or is subordinated or junior to, the Debentures.

        The term "Indebtedness" means, with respect to any Person (as defined)
and without duplication: (a) all indebtedness, obligations and other liabilities
(contingent or otherwise) of such Person for borrowed money (including
obligations of the Company in respect of overdrafts, foreign exchange contracts,
currency exchange agreements, interest rate protection agreements, and any loans
or advances from banks, whether or not evidenced by notes or similar
instruments) or evidenced by bonds, debentures, notes or similar instruments
(whether or not the recourse of the lender is to the whole of the assets of such
Person or to only a portion thereof); (b) all reimbursement obligations and
other liabilities (contingent or otherwise) of such Person with respect to
letters of credit, bank guarantees or bankers' acceptances; (c) all obligations
and liabilities (contingent or otherwise) in respect of leases of such Person
(i) required, in conformity with generally accepted accounting principles, to be
accounted for as capitalized lease obligations on the balance sheet of such
Person, or (ii) required, in conformity with generally accepted accounting
principles, to be accounted for as an operating lease, provided either (A) such
operating lease requires, at the end of the term thereof, that such Person make
any payment other than accrued periodic rent in the event that such Person does
not acquire the leased real property and related fixtures subject to such lease,
or (B) such Person has an option to acquire the leased real property and related
fixtures, whether such option is exercisable at any time or under specified
circumstances; (d) all obligations of such Person (contingent or otherwise) with
respect to an interest rate swap, cap or collar agreement or other similar
instrument or agreement; (e) all direct or indirect guaranties or similar
agreements by such Person in respect of, and obligations or liabilities
(contingent or otherwise) of such Person to purchase


                                      -38-

<PAGE>   42

or otherwise acquire or otherwise assure a creditor against loss in respect of,
indebtedness, obligations or liabilities of another Person of the kind described
in clauses (a) through (d); (f) any indebtedness or other obligations described
in clauses (a) through (d) secured by any mortgage, pledge, lien or other
encumbrance existing on property which is owned or held by such Person,
regardless of whether the indebtedness or other obligation secured thereby shall
have been assumed by such Person; and (g) any and all deferrals, renewals,
extensions and refundings of, or amendments, modifications or supplements to,
any indebtedness, obligation or liability of the kind described in clauses (a)
through (f).

        The term "Designated Senior Indebtedness" means any particular Senior
Indebtedness in which the instrument creating or evidencing the same or the
assumption or guarantee thereof (or related agreements or documents to which the
Company is a party) expressly provides that such Senior Indebtedness shall be
"Designated Senior Indebtedness" for purposes of the Indenture; provided that
such instrument, agreement or other document may place limitations and
conditions on the right of such Senior Indebtedness to exercise the rights of
Designated Senior Indebtedness.

        The Debentures are obligations exclusively of the Company. Since a
portion of the operations of the Company are conducted through subsidiaries, the
cash flow and the consequent ability to service debt, including the Debentures,
are dependent upon the earnings of its subsidiaries and the distribution of
those earnings to, or upon loans or other payments of funds by those
subsidiaries to, the Company. The subsidiaries are separate and distinct legal
entities and have no obligation, contingent or otherwise, to pay any amount
pursuant to the Debentures or to make any funds available therefor, whether by
dividends, loans or other payments. In addition, the payment of dividends and
making of loans and advances to the Company by its subsidiaries may be subject
to statutory or contractual restrictions, are contingent upon the earnings of
those subsidiaries and are subject to various business considerations.

        Any right of the Company to receive assets of any of its subsidiaries
upon their liquidation or reorganization (and the consequent right of the
holders of the Debentures to participate in those assets) will be effectively
subordinated to the claims of that subsidiary's creditors (including trade
creditors), except to the extent that the Company is itself recognized as a
creditor of such subsidiary, in which case the claims of the Company would still
be subordinate to any security interests in the assets of such subsidiary and
any indebtedness of such subsidiary senior to that held by the Company.

        At March 31, 1998, the Company had no indebtedness outstanding that
would have constituted Senior Indebtedness, and as of the same date the
Company's subsidiaries had no indebtedness or other liabilities outstanding
(excluding intercompany liabilities and liabilities of a type not required to be
reflected on a balance sheet in accordance with generally accepted accounting
principles) to which the Debentures would have been effectively subordinated.
The Indenture will not limit the amount of additional indebtedness, including
Senior Indebtedness, which the Company can create, incur, assume or guarantee,
nor will the Indenture limit the amount of indebtedness which any subsidiary can
create, incur, assume or guarantee.

        In the event that, notwithstanding the foregoing, the Trustee or any
holder of the Debentures receives any payment or distribution of assets of the
Company of any kind in contravention of any of the subordination provisions of
the Indenture, whether in cash, property or securities, including, without
limitation, by way of set-off or otherwise, in respect of the Debentures before
all Senior Indebtedness is paid in full in cash or other payment satisfactory to
the holders of Senior Indebtedness, then such payment or distribution will be
held by the recipient in trust for the benefit of holders of Senior Indebtedness
or their representatives to the extent necessary to make payment in full in cash
or other payment satisfactory to the holders of Senior Indebtedness of all
Senior Indebtedness remaining unpaid, after giving effect to any concurrent
payment or distribution, or provision therefor, to or for the holders of Senior
Indebtedness.

        The Company is obligated to pay reasonable compensation to the Trustee
and to indemnify the Trustee against certain losses, liabilities or expenses
incurred by it in connection with its duties relating to the Debentures. The
Trustee's claims for such payments will generally be senior to those of holders
of the Debentures in respect of all funds collected or held by the Trustee.


                                      -39-

<PAGE>   43

EVENTS OF DEFAULT; NOTICE AND WAIVER

        The Indenture provides that, if an Event of Default specified therein
shall have happened and be continuing, either the Trustee or the holders of not
less than 25% in aggregate principal amount at maturity of the Debentures then
outstanding may declare the Issue Price of the Debentures plus the Original
Issue Discount on the Debentures and any liquidated damages under the
Registration Rights Agreement accrued to the date of such declaration to be
immediately due and payable. In the case of certain events of bankruptcy or
insolvency, the Issue Price of the Debentures plus the Original Issue Discount
accrued thereon to the occurrence of such event shall automatically become and
be immediately due and payable. Under certain circumstances, the holders of a
majority in aggregate principal amount at maturity of the outstanding Debentures
may rescind any such acceleration with respect to the Debentures and its
consequences. Interest shall accrue at the rate of 4.75% per annum and be
payable on demand upon a default in the payment of the Issue Price, accrued
Original Issue Discount, accrued liquidated damages, if any, or any Redemption
Price, Purchase Price or Fundamental Change Redemption Price to the extent that
payment of such interest shall be legally enforceable.

        Under the Indenture, Events of Default are defined as: (i) default in
payment of the principal amount at maturity, Issue Price, accrued Original Issue
Discount, accrued liquidated damages, if any, Redemption Price, Purchase Price
or Fundamental Change Redemption Price with respect to any Debenture when such
becomes due and payable (whether or not payment is prohibited by the provisions
of the Indenture), provided that in the case of any failure to pay liquidated
damages, such failure continues for a period of 30 days; (ii) failure by the
Company to comply with any of its other agreements in the Debentures or the
Indenture upon the receipt by the Company of notice of such default by the
Trustee or by holders of not less than 25% in aggregate principal amount at
maturity of the Debentures then outstanding and the Company's failure to cure
such default within 60 days after receipt by the Company of such notice; or
(iii) certain events of bankruptcy or insolvency.

        The Trustee shall give notice to holders of the Debentures of any
continuing default known to the Trustee within 90 days after the occurrence
thereof, provided that the Trustee may withhold such notice if it determines in
good faith that withholding the notice is in the interests of the holders.

        The holders of a majority in aggregate principal amount at maturity of
the outstanding Debentures may direct the time, method and place of conducting
any proceeding for any remedy available to the Trustee or exercising any trust
or power conferred on the Trustee; provided that such direction shall not be in
conflict with any law or the Indenture and subject to certain other limitations.
Before proceeding to exercise any right or power under the Indenture at the
direction of such holders, the Trustee shall be entitled to receive from such
holders reasonable security or indemnity satisfactory to it against the costs,
expenses and liabilities which might be incurred by it in complying with any
such direction. No holder of any Debenture will have any right to pursue any
remedy with respect to the Indenture or the Debentures, unless (i) such holder
shall have previously given the Trustee written notice of a continuing Event of
Default; (ii) the holders of at least 25% in aggregate principal amount at
maturity of the outstanding Debentures shall have made a written request to the
Trustee to pursue such remedy; (iii) such holder or holders have offered to the
Trustee reasonable indemnity satisfactory to the Trustee; (iv) the holders of a
majority in aggregate principal amount at maturity of the outstanding Debentures
have not given the Trustee a direction inconsistent with such request within 60
days after receipt of such request; and (v) the Trustee shall have failed to
comply with the request within such 60-day period.

        However, the right of any holder (x) to receive payment of the principal
amount at maturity, Issue Price, accrued Original Issue Discount, Redemption
Price, Purchase Price, Fundamental Change Redemption Price and any interest in
respect of a default in the payment of any such amounts on a Debenture, on or
after the due date expressed in such Debenture, (y) to institute suit for the
enforcement of any such payments or conversion or (z) to convert Debentures
shall not be impaired or adversely affected without such holder's consent. The
holders of at least a majority in aggregate principal amount at maturity of the
outstanding Debentures may waive an existing default and its consequences, other
than (i) any default in any payment on the Debentures, (ii) any default with
respect to the conversion rights of the Debentures or (iii) any default in
respect of certain covenants or provisions in the Indenture which may not be
modified without the consent of the holder of each Debenture as described in
"Modification" below. The Company is required to furnish to the Trustee annually
a statement as to any default by the Company in the performance and observance
of its obligations under the Indenture.


                                      -40-

<PAGE>   44

REGISTRATION RIGHTS

        The Company has entered into a registration rights agreement with the
initial purchasers of the Debentures (the "Registration Rights Agreement")
pursuant to which the Company, at its expense, will, for the benefit of the
holders, file with the Commission the Shelf Registration Statement covering
resale of the Registrable Securities as soon as practicable, but in any event
within 90 days after February 10, 1998. The Company will use its best efforts to
cause the Shelf Registration Statement to become effective as promptly as is
practicable, but in any event within 180 days of such first date of original
issuance and to keep the Shelf Registration Statement effective until the
earlier of (i) the sale pursuant to the Shelf Registration Statement of all the
securities registered thereunder and (ii) the expiration of the holding period
applicable to such securities held by persons that are not affiliates of the
Company under Rule 144(k) under the Securities Act, or any successor provision,
subject to certain permitted exceptions. The Company will be permitted to
suspend the use of the prospectus that is a part of the Shelf Registration
Statement under certain circumstances relating to pending corporate
developments, public filings with the Commission and similar events for a period
not to exceed 30 days in any three-month period or not to exceed an aggregate of
90 days in any 12-month period; provided, however, that the Company will be
permitted to suspend the use of the prospectus for a period not to exceed 60
days in any 3-month period or 90 days in any 12-month period under certain
circumstances relating to probable acquisitions, acquisitions, financings or
similar transactions. The Company will agree to pay predetermined liquidated
damages as described herein ("Liquidated Damages") to holders of Debentures and
holders of Common Stock issued upon conversion of the Debentures if the Shelf
Registration Statement is not timely filed or made effective or if the
prospectus is unavailable for periods in excess of those permitted above. Such
Liquidated Damages shall accrue until such failure to file or become effective
or unavailability is cured, (i) in respect of any Debenture, at a rate per annum
equal to 0.25% for the first 90 day period after the occurrence of such event
and 0.5% thereafter of the Applicable Principal Amount (as defined) at maturity
thereof and, (ii) in respect of any shares of Common Stock, at a rate per annum
equal to 0.25% for the first 90 day period and 0.5% thereafter of the then
Applicable Conversion Price (as defined). A holder who sells Debentures and
Common Stock issued upon conversion of the Debentures pursuant to the Shelf
Registration Statement generally is required to be named as a selling
stockholder in the related prospectus, deliver a prospectus to purchasers of
such Debentures and/or Common Stock issued upon conversion thereof and be bound
by certain provisions of the Registration Rights Agreement that are applicable
to such holder (including certain indemnification provisions). The Company will
pay all expenses of the Shelf Registration Statement, provide to each registered
holder copies of such prospectus, notify each registered holder when the Shelf
Registration Statement has become effective and take certain other actions as
are required to permit, subject to the foregoing, unrestricted resales of the
Debentures and the Common Stock issued upon conversion of the Debentures. The
plan of distribution of the Shelf Registration Statement will permit resales of
Registrable Securities by selling security holders through brokers and dealers.
The term "Applicable Principal Amount" means, as of any date of determination,
with respect to each $1,000 principal amount at maturity of Debentures, the sum
of the initial issue price of such Debentures ($391.06) plus accrued Original
Issue Discount with respect to such Debentures through such date of
determination or, if no Debentures are then outstanding, such sum calculated as
if such Debentures were then outstanding. The term "Applicable Conversion Price"
means, as of any date of determination, the Applicable Principal Amount per
$1,000 principal amount at maturity of Debentures as of such date of
determination divided by the Conversion Rate in effect as of such date of
determination or, if no Debentures are then outstanding, the Conversion Rate
that would be in effect were Debentures then outstanding.

        Attached to this Prospectus as Annex A is a form of notice and
questionnaire (the "Questionnaire") to be completed and delivered by a holder to
the Company at least three business days prior to any intended distribution of
Registrable Securities pursuant to the Shelf Registration Statement. Holders are
required to complete and deliver the Questionnaire prior to the effectiveness of
the Shelf Registration Statement so that such holders may be named as selling
stockholders in the related prospectus at the time of effectiveness. Upon
receipt of such a completed Questionnaire, together with such other information
as may be reasonably requested by the Company, from a holder following the
effectiveness of the Shelf Registration Statement, the Company will, as promptly
as practicable but in any event within five business days of such receipt, file
such amendments to the Shelf Registration Statement or supplements to the
related prospectus as are necessary to permit such holder to deliver such
prospectus to purchasers of Registrable Securities (subject to the Company's
right to suspend the use of the prospectus as described above). The Company has
agreed to pay Liquidated Damages in the amount set forth above to such holder if
the Company fails to make such filing in the time required or, if such filing is
a post-effective amendment to the Shelf Registration Statement required to be
declared effective under the Securities Act, if such amendment is not declared
effective within 45 days of the filing thereof. Any holder that does not
complete and deliver a Questionnaire


                                      -41-

<PAGE>   45

or provide such other information will not be named as a selling stockholder in
the prospectus and therefore will not be permitted to sell any Registrable
Securities pursuant to the Shelf Registration Statement.

        The summary herein of certain provisions of the Registration Rights
Agreement is subject to, and is qualified in its entirety by reference to, all
the provisions of the Registration Rights Agreement, a copy of which is
available upon request to the Company or the Initial Purchaser.

MERGERS AND SALES OF ASSETS BY THE COMPANY

        The Company may not consolidate with or merge into any other person or
convey, transfer or lease its properties and assets substantially as an entirety
to another person, unless, among other items, (i) the resulting, surviving or
transferee person (if other than the Company) is organized and existing under
the laws of the United States, any state thereof or the District of Columbia,
(ii) such successor person assumes all obligations of the Company under the
Debentures and the Indenture and (iii) the Company or such successor person
shall not immediately thereafter be in default under the Indenture. Upon the
assumption of the Company's obligations by such person in such circumstances,
subject to certain exceptions, the Company shall be discharged from all
obligations under the Debentures and the Indenture. Certain such transactions
which would constitute a Fundamental Change would permit each holder to require
the Company to redeem the Debentures of such holder as described under
"Redemption at Option of the Holder Upon a Fundamental Change."

MODIFICATION

        Modification and amendment of the Indenture or the Debentures may be
effected by the Company and the Trustee with the consent of the holders of not
less than a majority in aggregate principal amount at maturity of the Debentures
then outstanding. Notwithstanding the foregoing, no such amendment may, without
the consent of each holder affected thereby: (i) reduce the principal amount at
maturity, Issue Price, Purchase Price, Fundamental Change Redemption Price or
Redemption Price, or extend the stated maturity of any Debenture or alter the
manner or rate of accrual of Original Issue Discount or interest, or make any
Debenture payable in money or securities other than that stated in the
Debenture; (ii) make any change to the principal amount at maturity of
Debentures whose holders must consent to an amendment or any waiver under the
Indenture or modify the Indenture provisions relating to such amendments or
waivers; (iii) make any change that adversely affects the right to convert any
Debenture or the right to require the Company to purchase a Debenture or the
right to require the Company to redeem a Debenture upon a Fundamental Change;
(iv) modify the provisions of the Indenture relating to the subordination of the
Debentures in a manner adverse to the holders of the Debentures in any material
respect; or (v) impair the right to institute suit for the enforcement of any
payment with respect to, or conversion of, the Debentures. The Indenture also
provides for certain modifications of its terms without the consent of the
holders. No amendment may be made to the subordination provisions of the
Indenture that adversely affects the rights of any holder of Senior Indebtedness
then outstanding, unless the holders of such Senior Indebtedness (as required
pursuant to the terms of such Senior Indebtedness) consent to such change.

TAXATION OF DEBENTURES

        See "Certain Federal Income Tax Considerations" for a discussion of
certain tax considerations relevant to a holder of Debentures.

INFORMATION CONCERNING THE TRUSTEE

        State Street Bank and Trust Company of California, N.A., as Trustee
under the Indenture, has been appointed by the Company as paying agent,
conversion agent, registrar and custodian with regard to the Debentures.


                                      -42-

<PAGE>   46

                              PLAN OF DISTRIBUTION

        Under the terms and subject to the conditions set forth in the Purchase
Agreement between the Company and Morgan Stanley & Co. Incorporated (the
"Initial Purchaser") dated February 10, 1998 (the "Purchase Agreement"), the
Initial Purchaser has agreed to purchase, and the Company has agreed to sell to
the Initial Purchaser, $770,000,000 aggregate principal amount at maturity of
Debentures at a purchase price of 39.106% of the principal amount at maturity
thereof and the Company has agreed to pay to the Initial Purchaser a fee of 2.5%
of the gross proceeds of this offering. After the initial offering of the
Debentures, the offering price and other selling terms may from time to time be
varied by the Initial Purchaser.

        The Purchase Agreement provides that the obligation of the Initial
Purchaser to pay for and accept delivery of the Debentures is subject to
approval of certain legal matters by its counsel and to certain other
conditions. The Initial Purchaser is obligated to take and pay for all of the
Debentures offered hereby if any are taken.

        The Company has granted to the Initial Purchaser an option, exercisable
within 30 days of the date of the Purchase Agreement, to purchase up to an
additional $115,500,000 aggregate principal amount at maturity of the Debentures
solely for the purpose of covering over-allotments, if any.

        The Purchase Agreement provides that the Company will indemnify the
Initial Purchaser against certain liabilities, including liabilities under the
Securities Act.

        The Company has been advised by the Initial Purchaser that the Initial
Purchaser proposes to resell the Debentures initially at the price set forth on
the cover page hereof within the United States to "qualified institutional
buyers" (as defined in Rule 144A under the Securities Act) in reliance on Rule
144A under the Securities Act. See "Transfer Restrictions."

        The Debentures and the Common Stock issuable upon conversion of the
Debentures have not been registered under the Securities Act and may not be
offered or sold within the United States or to, or for the account or benefit
of, U.S. persons except as described in the immediately preceding paragraph.

        If the Initial Purchaser confirms sales outside the United States, it
has agreed that it will not offer, sell or deliver the Debentures to, or for the
benefit of, U.S. persons (i) as part of the Initial Purchaser's distribution at
any time or (ii) otherwise until 40 days after the later of the commencement of
the offering and the closing date, and it will send to each dealer to whom it
sells such Debentures during such period a confirmation or other notice setting
forth the restrictions on offers and sales of the Debentures within the United
States or to, or for the account or benefit of, U.S. persons. Resales of the
Debentures and the Common Stock issuable upon conversion of the Debentures are
restricted as described below under "Transfer Restrictions."

        In addition, until 40 days after the later of the commencement of the
offering and the closing date, an offer or sale of the Debentures within the
United States by a dealer that is not participating in the offering may violate
the registration requirements of the Securities Act if such offer or sale is not
made in accordance with Rule 144A under the Securities Act or pursuant to
another valid exemption therefrom.

        The Initial Purchaser has represented and agreed that (a) it has not
offered or sold and, prior to six months after the closing, will not offer or
sell any Debentures in the United Kingdom except to persons whose ordinary
activities involve them in acquiring, holding, managing or disposing of
investments (as principal or agent) for the purpose of their business or
otherwise in circumstances which have not resulted and will not result in an
offer to the public in the United Kingdom within the meaning of the Public
Offers of Security Regulation 1995 ("Regulations"); (b) it has complied and will
comply with all applicable provisions of the Financial Services Act of 1986 and
the Regulations with respect to anything done by the Initial Purchaser in
relation to the Debentures offered hereby in, from or otherwise involving the
United Kingdom; and (c) it has only issued or passed on, and will only issue or
pass on, to any person in the United Kingdom any document received by it in
connection with the issue of the Debentures if that person is of a kind
described in Article 11(3) of the Financial Services Act 1986 (Investment
Advertisements) (Exemptions) Order 1996 or is a person to whom such document may
otherwise lawfully be issued or passed on.


                                      -43-

<PAGE>   47

        The Debentures are expected to be eligible for trading in The Portal
Market. The Initial Purchaser has advised the Company that it presently intends
to make a market in the Debentures as permitted by applicable laws and
regulations. The Initial Purchaser is not obligated, however, to make a market
in the Debentures and any such market making may be discontinued at any time at
the sole discretion of the Initial Purchaser. Accordingly, no assurance can be
given as to the liquidity of, or trading markets for, the Debentures.

        The Company and certain of its executive officers and directors have
agreed that they will not (a) offer, pledge, sell, contract to sell, sell any
option or contract to purchase, purchase any option or contract to sell, grant
any option, right or warrant to purchase, or otherwise transfer or dispose of,
directly or indirectly, any shares of Common Stock or any securities convertible
into or exercisable or exchangeable for Common Stock, or (b) enter into any swap
or other agreement that transfers, in whole or in part, any of the economic
consequences of ownership of the Common Stock, whether any such transaction
described in clause (a) or (b) above is to be settled by delivery of Common
Stock or such other securities, in cash or otherwise for a 90-day period after
the date of this Offering Memorandum, without the prior written consent of
Morgan Stanley & Co. Incorporated, other than (i) the Debentures offered hereby,
(ii) the Common Stock issuable upon conversion of the Debentures, (iii)
securities of the Company (and the agreement to provide such securities) as full
or partial consideration in connection with any future acquisitions or strategic
investments by the Company or securities of the Company issuable upon exercise
or conversion of the foregoing securities, (iv) options granted or stock issued
upon the exercise of outstanding stock options or otherwise pursuant to the
Company's stock option or employee stock purchase plans and (v) stock issuable
upon the exercise of outstanding warrants or conversion of outstanding preferred
stock.

        In order to facilitate the offering of the Debentures and the Common
Stock, the Initial Purchaser may engage in transactions that stabilize, maintain
or otherwise affect the price of the Debentures or the Common Stock.
Specifically, the Initial Purchaser may over-allot in connection with the
offering, creating a short position in the Debentures for its own account. In
addition, to cover over-allotments or stabilize the price of the Debentures, the
Initial Purchaser may bid for, and purchase, the Debentures or shares of the
Common Stock in the open market. Any of these activities may stabilize or
maintain the market price of the Debentures or the Common Stock above
independent market levels. The Initial Purchaser is not required to engage in
these activities, and may discontinue any of these activities at any time.

        The Initial Purchaser has performed various investment banking and other
services for the Company in the past, and may do so from time to time in the
future.

                              TRANSFER RESTRICTIONS

        The Debentures and the Common Stock issuable upon conversion of the
Debentures have not been registered under the Securities Act. The Debentures and
Common Stock issuable upon conversion of the Debentures may not be offered or
sold within the United States or to, or for the account or benefit of, U.S.
persons, except (i) in compliance with the registration requirements of the
Securities Act and all other applicable securities laws, or (ii) pursuant to an
exemption from, or in a transaction not subject to, the registration
requirements of the Securities Act and any other applicable securities laws.
Accordingly, the Debentures are being offered and sold only to "qualified
institutional buyers" (as defined in Rule 144A under the Securities Act)
("QIBs") in compliance with Rule 144A.

        Each purchaser of Debentures will be deemed to (1) represent that it is
purchasing the Debentures for its own account or an account with respect to
which it exercises sole investment discretion and that it or such account is a
QIB, (2) acknowledge that the Debentures and the Common Stock issuable upon
conversion of the Debentures have not been registered under the Securities Act,
and may not be offered or sold within the United States or to, or for the
account or benefit of, U.S. persons except as set forth below, (3) agree that if
it should resell or otherwise transfer the Debentures or the Common Stock
issuable upon conversion of the Debentures within the period prior to the
expiration of the holding period applicable to sales thereof under Rule 144(k)
under the Securities Act (or any successor provision), it will do so within the
United States or to, or for the account or benefit of, U.S. persons only (a) to
the Company or any subsidiary thereof, (b) to a QIB in compliance with Rule
144A, (c) pursuant to an exemption from registration provided by Rule 144 under
the Securities Act (if available) or (d) pursuant to a registration statement
which has been declared effective under the Securities Act (and which continues
to be effective at the time of such transfer), and (4) agree that it will give
each person to whom it transfers such Debentures notice of any restrictions on
transfer of such Debentures. In the case of any certificated Debentures, prior
to any proposed


                                      -44-

<PAGE>   48

transfer of Debentures within the period prior to the expiration of the holding
period applicable to sales thereof under Rule 144(k) under the Securities Act
(or any successor provision), the holders thereof must check the appropriate box
set forth on the certificate representing the Debentures relating to the manner
of such transfer and submit the certificate representing the Debentures to the
Trustee. If any holder proposes to transfer Common Stock issued upon conversion
of Debentures prior to the expiration of the holding period applicable to sales
thereof under Rule 144(k) under the Securities Act (or any successor provision),
the holder (or beneficial holder, as the case may be) will be required to
furnish to the Transfer Agent such certifications, legal opinions or other
information as it may reasonably require to confirm that the proposed transfer
is being made pursuant to an exemption from, or in a transaction not subject to,
the registration requirements of the Securities Act.

        Each certificate representing a Debenture will bear the following legend
(unless such Debenture has been sold pursuant to a registration statement that
has been declared effective under the Securities Act):

        THE DEBENTURE EVIDENCED HEREBY HAS NOT BEEN REGISTERED UNDER THE UNITED
STATES SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), OR ANY STATE
SECURITIES LAWS, AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD WITHIN THE UNITED
STATES OR TO, OR FOR THE ACCOUNT OR BENEFIT OF, U.S. PERSONS EXCEPT AS SET FORTH
IN THE FOLLOWING SENTENCE. BY ITS ACQUISITION HEREOF, THE HOLDER (1) REPRESENTS
THAT (A) IT IS A "QUALIFIED INSTITUTIONAL BUYER" (AS DEFINED IN RULE 144A UNDER
THE SECURITIES ACT) OR (B) IT IS NOT A U.S. PERSON AND IS ACQUIRING THE SECURITY
EVIDENCED HEREBY IN AN OFFSHORE TRANSACTION; (2) AGREES THAT IT WILL NOT, PRIOR
TO EXPIRATION OF THE HOLDING PERIOD APPLICABLE TO SALES OF THE DEBENTURE
EVIDENCED HEREBY UNDER RULE 144(K) UNDER THE SECURITIES ACT (OR ANY SUCCESSOR
PROVISION), RESELL OR OTHERWISE TRANSFER THE DEBENTURE EVIDENCED HEREBY OR THE
COMMON STOCK ISSUABLE UPON CONVERSION OF SUCH DEBENTURES WITHIN THE UNITED
STATES OR TO, OR FOR THE ACCOUNT OF, U.S. PERSONS EXCEPT (A) TO NETWORKS
ASSOCIATES, INC. OR ANY SUBSIDIARY THEREOF, (B) TO A QUALIFIED INSTITUTIONAL
BUYER IN COMPLIANCE WITH RULE 144A UNDER THE SECURITIES ACT, (C) PURSUANT TO THE
EXEMPTION FROM REGISTRATION PROVIDED BY RULE 144 UNDER THE SECURITIES ACT (IF
AVAILABLE) OR (D) PURSUANT TO A REGISTRATION STATEMENT WHICH HAS BEEN DECLARED
EFFECTIVE UNDER THE SECURITIES ACT (AND WHICH CONTINUES TO BE EFFECTIVE AT THE
TIME OF SUCH TRANSFER); (3) PRIOR TO SUCH TRANSFER (OTHER THAN A TRANSFER
PURSUANT TO CLAUSE 2(D) ABOVE), IT WILL FURNISH TO STATE STREET BANK AND TRUST
COMPANY OF CALIFORNIA, N.A., AS TRUSTEE (OR A SUCCESSOR TRUSTEE, AS APPLICABLE),
SUCH CERTIFICATIONS, LEGAL OPINIONS OR OTHER INFORMATION AS THE TRUSTEE MAY
REASONABLY REQUIRE TO CONFIRM THAT SUCH TRANSFER IS BEING MADE PURSUANT TO AN
EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION
REQUIREMENTS OF THE SECURITIES ACT AND (4) AGREES THAT IT WILL DELIVER TO EACH
PERSON TO WHOM THE DEBENTURES EVIDENCED HEREBY ARE TRANSFERRED A NOTICE
SUBSTANTIALLY TO THE EFFECT OF THIS LEGEND. IN CONNECTION WITH ANY TRANSFER OF
THE DEBENTURE EVIDENCED HEREBY PRIOR TO THE EXPIRATION OF THE HOLDING PERIOD
APPLICABLE TO SALES OF THE DEBENTURE EVIDENCED HEREBY UNDER RULE 144(K) UNDER
THE SECURITIES ACT (OR ANY SUCCESSOR PROVISION), THE HOLDER MUST CHECK THE
APPROPRIATE BOX SET FORTH ON THE REVERSE HEREOF RELATING TO THE MANNER OF SUCH
TRANSFER AND SUBMIT THIS CERTIFICATE TO STATE STREET BANK AND TRUST COMPANY OF
CALIFORNIA, N.A., AS TRUSTEE (OR A SUCCESSOR TRUSTEE, AS APPLICABLE). IF THE
PROPOSED TRANSFEREE IS A PURCHASER WHO IS NOT A U.S. PERSON, THE HOLDER MUST,
PRIOR TO SUCH TRANSFER, FURNISH TO STATE STREET BANK AND TRUST COMPANY OF
CALIFORNIA, N.A., AS TRUSTEE (OR A SUCCESSOR TRUSTEE, AS APPLICABLE), SUCH
CERTIFICATIONS, LEGAL OPINIONS OR OTHER INFORMATION AS IT MAY REASONABLY REQUIRE
TO CONFIRM THAT SUCH TRANSFER IS BEING MADE PURSUANT TO AN EXEMPTION FROM, OR IN
A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES
ACT. THIS LEGEND WILL BE REMOVED UPON THE EARLIER OF THE TRANSFER OF THE
DEBENTURE EVIDENCED HEREBY PURSUANT TO CLAUSE 2(D) ABOVE OR UPON ANY TRANSFER OF
THE DEBENTURE EVIDENCED HEREBY UNDER RULE 144(K) UNDER THE SECURITIES ACT (OR
ANY SUCCESSOR PROVISION).


                                      -45-

<PAGE>   49

        Each stock certificate representing Common Stock issued upon conversion
of the Debenture will bear the following legend (unless such Common Stock has
been sold pursuant to a registration statement that has been declared effective
under the Securities Act):

        THE COMMON STOCK EVIDENCED HEREBY HAS NOT BEEN REGISTERED UNDER THE
UNITED STATES SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), OR ANY
STATE SECURITIES LAWS, AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD WITHIN THE
UNITED STATES OR TO, OR FOR THE ACCOUNT OR BENEFIT OF, U.S. PERSONS EXCEPT AS
SET FORTH IN THE FOLLOWING SENTENCE. THE HOLDER HEREOF AGREES THAT UNTIL THE
EXPIRATION OF THE HOLDING PERIOD APPLICABLE TO SALES OF THE SECURITY EVIDENCED
HEREBY UNDER RULE 144(K) UNDER THE SECURITIES ACT (OR ANY SUCCESSOR PROVISION),
(1) IT WILL NOT RESELL OR OTHERWISE TRANSFER THE COMMON STOCK EVIDENCED HEREBY
WITHIN THE UNITED STATES OR TO, OR FOR THE ACCOUNT OF, U.S. PERSONS EXCEPT (A)
TO NETWORKS ASSOCIATES, INC. OR ANY SUBSIDIARY THEREOF, (B) TO A "QUALIFIED
INSTITUTIONAL BUYER" (AS DEFINED IN RULE 144A UNDER THE SECURITIES ACT) IN
COMPLIANCE WITH RULE 144A, (C) PURSUANT TO THE EXEMPTION FROM REGISTRATION
PROVIDED BY RULE 144 UNDER THE SECURITIES ACT (IF AVAILABLE), OR (D) PURSUANT TO
A REGISTRATION STATEMENT WHICH HAS BEEN DECLARED EFFECTIVE UNDER THE SECURITIES
ACT (AND WHICH CONTINUES TO BE EFFECTIVE AT THE TIME OF SUCH TRANSFER); (2)
PRIOR TO SUCH TRANSFER (OTHER THAN A TRANSFER PURSUANT TO CLAUSE 1(D) ABOVE), IT
WILL FURNISH TO BOSTON EQUISERVE, AS TRANSFER AGENT (OR A SUCCESSOR TRANSFER
AGENT, AS APPLICABLE), SUCH CERTIFICATIONS, LEGAL OPINIONS OR OTHER INFORMATION
AS THE TRANSFER AGENT MAY REASONABLY REQUIRE TO CONFIRM THAT SUCH TRANSFER IS
BEING MADE PURSUANT TO AN EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO,
THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND (3) IT WILL DELIVER TO
EACH PERSON TO WHOM THE COMMON STOCK EVIDENCED HEREBY IS TRANSFERRED (OTHER THAN
A TRANSFER PURSUANT TO CLAUSE 1(D) ABOVE) A NOTICE SUBSTANTIALLY TO THE EFFECT
OF THIS LEGEND. THIS LEGEND WILL BE REMOVED UPON THE EARLIER OF THE TRANSFER OF
THE COMMON STOCK EVIDENCED HEREBY PURSUANT TO CLAUSE 1(D) ABOVE OR UPON ANY
TRANSFER OF THE COMMON STOCK EVIDENCED HEREBY AFTER THE EXPIRATION OF THE
HOLDING PERIOD APPLICABLE TO SALES OF THE SECURITY EVIDENCED HEREBY UNDER RULE
144(K) UNDER THE SECURITIES ACT (OR ANY SUCCESSOR PROVISION).


                                      -46-

<PAGE>   50

                                 USE OF PROCEEDS

        The Company will not receive any proceeds from the sale of the
Debentures or the Common Stock issuable upon conversion of the Debentures by the
Selling Securityholders.

                    INDEMNIFICATION OF DIRECTORS AND OFFICERS

        The Company's Certificate of Incorporation limits, to the maximum extent
permitted by Delaware law, the personal liability of directors for monetary
damages for breach of their fiduciary duties as a director. The Company's Bylaws
provide that the Company shall indemnify its officers and directors and may
indemnify its employees and other agents to the fullest extent permitted by
Delaware law. The Company has entered into indemnification agreements with its
officers and directors containing provisions which are in some respects broader
than the specific indemnification provisions contained in the Delaware General
Corporation Law. The indemnification agreements require the Company, among other
things to indemnify such officers and directors against certain liabilities that
may arise by reason of their status or service as directors or officers (other
than liabilities arising from willful misconduct of a culpable nature), to
advance their expenses incurred as a result of any proceeding against them as to
which they could be indemnified, and to obtain directors' and officers'
insurance, if available on reasonable terms. The Company believes that these
agreements are necessary to attract and retain qualified persons as directors
and officers.

        Section 145 of the Delaware General Corporation Law provides that a
corporation may indemnify a director, officer, employee or agent made a party to
an action by reason of that fact that he or she was a director, officer,
employee or agent of the corporation or was serving at the request of the
corporation against expenses actually and reasonably incurred by him or her in
connection with such action if he or she acted in good faith and in a manner he
or she reasonably believed to be in, or not opposed to, the best interests of
the corporation and with respect to any criminal action, had no reasonable cause
to believe his or her conduct was unlawful.

        Insofar as indemnification for liabilities arising under the Securities
Act may be permitted to directors, officers or persons controlling the
Registrant pursuant to the foregoing provisions, the Registrant has been
informed that in the opinion of the Securities and Exchange Commission, such
indemnification is against public policy as expressed in the Securities Act and
is therefore unenforceable.

                                  LEGAL MATTERS

        The legality of the securities offered hereby is passed upon for the
Company by Wilson Sonsini Goodrich & Rosati, Professional Corporation, Palo
Alto, California.

                                     EXPERTS

        The consolidated balance sheets of the Company as of December 31, 1997
and 1996, and the consolidated statements of operations, stockholders' equity,
and cash flows and the financial statement schedule for each of the years in the
three-year period ended December 31, 1997, incorporated in this Prospectus by
reference from the Company's Annual Report on Form 10-K for the year ended
December 31, 1997, have been audited by Coopers & Lybrand L.L.P., independent
certified public accountants, and are incorporated herein by reference in
reliance upon the report of Coopers & Lybrand L.L.P., given upon the authority
of such firm as experts in accounting and auditing.


                                      -47-

<PAGE>   51

        NO DEALER, SALESPERSON OR ANY OTHER PERSON HAS BEEN AUTHORIZED TO GIVE
ANY INFORMATION OR MAKE ANY REPRESENTATIONS IN CONNECTION WITH THIS OFFERING
OTHER THAN THOSE CONTAINED IN THIS PROSPECTUS AND, IF GIVEN OR MADE, SUCH
INFORMATION OR REPRESENTATIONS MUST NOT BE RELIED UPON AS HAVING BEEN AUTHORIZED
BY THE COMPANY OR THE SELLING STOCKHOLDERS. THIS PROSPECTUS DOES NOT CONSTITUTE
AN OFFER TO SELL OR A SOLICITATION OF ANY OFFER TO BUY ANY OF THE SECURITIES
OFFERED HEREBY BY ANYONE IN ANY JURISDICTION IN WHICH SUCH OFFER OR SOLICITATION
IS NOT AUTHORIZED OR IN WHICH THE PERSON MAKING SUCH OFFER OR SOLICITATION IS
NOT QUALIFIED TO DO SO OR TO ANY PERSON TO WHOM IT IS UNLAWFUL TO MAKE SUCH
OFFER OR SOLICITATION. NEITHER THE DELIVERY OF THIS PROSPECTUS NOR ANY SALE MADE
HEREUNDER SHALL, UNDER ANY CIRCUMSTANCES, CREATE ANY IMPLICATION THAT THE
INFORMATION CONTAINED HEREIN IS CORRECT AS OF ANY TIME SUBSEQUENT TO THE DATE OF
THE PROSPECTUS.


                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                               PAGE
<S>                                                                                            <C>
Trademarks.....................................................................................  1

McAfee Associates/Network General Merger.......................................................  1

Available Information..........................................................................  1

Incorporation of Certain Documents by Reference................................................  1

Forward-Looking Statements.....................................................................  2

The Company....................................................................................  3

The Offering...................................................................................  5

Risk Factors...................................................................................  7

Selling Securityholders........................................................................ 22

Description of Debentures...................................................................... 25

Plan of Distribution........................................................................... 39

Indemnification of Directors and Officers...................................................... 43

Legal Matters.................................................................................. 43

Experts ....................................................................................... 43
</TABLE>

                      $885,500,000 ZERO COUPON CONVERTIBLE
                        SUBORDINATED DEBENTURES DUE 2018


                                      -48-

<PAGE>   52

                            NETWORKS ASSOCIATES, INC.

                                     PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 14.  OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION.

        The fees and expenses incurred by the Company in connection with the
offering are payable by the Company and, other than filing fees, are estimated
as follows:

<TABLE>
<S>                                                                     <C>        
Securities and Exchange Commission Registration Fee.................     261,222.50
NASDAQ Filing Fee...................................................         17,500
Legal Fees and Expenses.............................................    $    25,00$
Accounting Fees.....................................................         10,000
Miscellaneous.......................................................          6,000
                                                                        -----------
        Total.......................................................    $319,722.5$
</TABLE>

ITEM 15.  INDEMNIFICATION OF OFFICERS AND DIRECTORS.

        Section 145 of the Delaware General Corporation law ("DGCL") empowers a
Delaware corporation to indemnify any persons who are, or are threatened to be
made, parties to any threatened, pending or completed legal action, suit or
proceedings, whether civil, criminal, administrative or investigative (other
than action by or in the right of such corporation), by reason of the fact that
such person was an officer or director of such corporation, or is or was serving
at the request of such corporation as a director, officer, employee or agent of
another corporation or enterprise. The indemnity may include expenses (including
attorneys' fees), judgments, fines and amounts paid in settlement actually and
reasonably incurred by such person in connection with such action, suit or
proceeding, provided that such officer or director acted in good faith and in a
manner he reasonably believed to be in or not opposed to the corporation's best
interest, and, for criminal proceedings, had no reasonable cause to believe his
conduct was illegal. A Delaware corporation may indemnify officers and directors
in an action by or in the right of the corporation under the same conditions,
except that no indemnification is permitted without judicial approval if the
officer or director is adjudged to be liable to the corporation in the
performance of his duty. Where an officer or director is successful on the
merits or otherwise in the defense of any action referred to above, the
corporation must indemnify him against the expenses which such officer or
director actually and reasonably incurred.

        In accordance with the DGCL, the Company's Second Restated Certificate
of Incorporation ("Certificate") contains a provision to limit the personal
liability of the directors of the Registrant for violations of their fiduciary
duty. This provision eliminates each director's liability to the Registrant or
its stockholders for monetary damages except (i) for any breach of the
director's duty of loyalty to the Registrant or its stockholders, (ii) for acts
or omissions not in good faith or which involve intentional misconduct or a
knowing violation of law, (iii) under Section 174 of the DGCL providing for
liability of directors for unlawful payment of dividends or unlawful stock
purchases or redemptions, or (iv) for any transaction from which a director
derived an improper personal benefit. The effect of this provision is to
eliminate the personal liability of directors for monetary damages for actions
involving a breach of their fiduciary duty of care, including any such actions
involving gross negligence.

        Article Sixth of the Company's Certificate and Article VIII, Section 1
of the Company's Bylaws provide for indemnification of the officers and
directors of the Registrant to the fullest extent permitted by applicable law.


                                      II-1

<PAGE>   53

        The Registrant has entered into indemnification agreements with each
director and executive officer which provide indemnification to such directors
and executive officers under certain circumstances for acts or omissions which
may not be covered by directors' and officers' liability insurance.

ITEM 16.  EXHIBITS.

        The following exhibits are filed with this Registration Statement:

        (a)Exhibits

<TABLE>
<CAPTION>
Exhibit No.*    Description
- ------------    -----------
<S>             <C>
    3.1         Second Restated Certificate of Incorporation of Networks
                Associates, Inc., as amended on December 1, 1997, incorporated
                by reference to the Registrant's Registration Statement on Form
                S-4, filed with the Commission on March 25, 1998.

    3.2         Bylaws of Networks Associates, Inc., incorporated by reference
                to the Registrant's Registration Statement on Form S-4, filed
                with the Commission on March 25, 1998.

    3.3         Certificate of Designation of Series A Preferred Stock of
                Networks Associates, Inc., incorporated by reference to Exhibit
                3.3 of the Registrant's Form 10-Q for the Quarter ended
                September 30, 1996.

    4.1         Registration Rights Agreement, dated as of August 30, 1996, by
                and among Networks Associates, Inc., FSA Combination Corp. and
                FSA Corporation, incorporated by reference to the Registrant's
                Report on Form 8-K as filed with the Securities and Exchange
                Commission on September 24, 1996.

    4.2         Registration Rights Agreement, dated January 13, 1997 by and
                between Networks Associates, Inc. and the shareholders of Jade,
                incorporated by reference to the Registrant's Report on Form
                8-K, as filed with the Securities and Exchange Commission on
                March 14, 1997.

    4.3         Registration Rights Agreement, dated as of February 28, 1997, by
                and between Networks Associates, Inc. and shareholders of
                Schuijers, incorporated by reference to the Registrant's Report
                on Form 10-K, for the year ended December 31, 1996.

    4.4         Registration Rights Agreement, dated as of December 1, 1997, by
                and between Networks Associates, Inc. and shareholders of Helix
                Software Company, incorporated by reference to the Registrant's
                Registration Statement on Form S-3, filed with the Commission on
                February 12, 1998.

    4.5         Registration Rights Agreement, dated December 9, 1997 between
                the Registrant and certain of the shareholders of PGP,
                incorporated by reference to the Registrant's Registration
                Statement on Form S-3, filed with the Commission on February 12,
                1998.

    4.6         Registration Rights Agreement, dated as of February 13, 1998, by
                and between Networks Associates, Inc. and Morgan Stanley & Co.
                Incorporated.

    4.7         Indenture dated as of February 13, 1998 between Networks
                Associates, Inc. and State Street Bank and Trust Company of
                California, N.A., as Trustee.
</TABLE>


                                      II-2

<PAGE>   54

<TABLE>
<CAPTION>
Exhibit No.*    Description
- ------------    -----------
<S>             <C>
    5.1         Opinion of Wilson Sonsini Goodrich & Rosati, Professional
                Corporation.

   21.1         Subsidiaries of Networks Associates, Inc., incorporated by
                reference to the Registrant's Registration Statement of 
                Form S-3, filed with the Commission on February 12, 1998.

   23.1         Consent of Wilson Sonsini Goodrich & Rosati, Professional
                Corporation (included in opinions filed as Exhibits 5.1 and
                8.1).

   23.3         Consent of Coopers & Lybrand L.L.P.

   24.1         Power of Attorney (see Page II-4).
</TABLE>

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

     *   On December 1, 1997, the Registrant changed it legal name from McAfee
         Associates, Inc. to Networks Associates Inc. Items filed by the
         Registrant prior to December 1, 1997 were filed under the name McAfee
         Associates, Inc.

        (b)  Financial Statements Schedules

        The information required to be set forth herein is incorporated by
reference to Networks Associates' Annual Report on Form 10-K for the fiscal year
ended December 31, 1997 and TIS's Annual Report on Form 10-K for the fiscal year
ended December 31, 1997 as amended on Form 10-K/A.

ITEM 17.  UNDERTAKINGS.

        The undersigned Registrant hereby undertakes:

        (1) To file, during any period in which offers or sales are being made,
a post-effective amendment to this Registration Statement: (i) to include any
prospectus required by section 10(a)(3) of the Securities Act; (ii)to reflect in
the prospectus any facts or events arising after the effective date of the
Registration Statement (or the most recent post-effective amendment thereof)
which, individually or in the aggregate, represent a fundamental change in the
information set forth in the Registration Statement. Notwithstanding the
foregoing, any increase or decrease in volume of securities offered (if the
total dollar value of securities offered would not exceed that which was
registered) and any deviation from the low or high end of the estimated maximum
offering range may be reflected in the form of prospectus filed with the
Commission pursuant to Rule 424(b) (Section 230.424(b) of this chapter) if, in
the aggregate, the changes in volume and price represent no more than a 20%
change in the maximum aggregate offering price set forth in the "Calculation of
Registration Fee" table in the effective registration statement; and (iii) to
include any material information with respect to the plan of distribution not
previously disclosed in the Registration Statement or any material change to
such information in the Registration Statement; provided, however, that (i) and
(ii) do not apply if the Registration Statement is on Form S-3, Form S-8 or Form
F-3, and the information required to be included in a post-effective amendment
by (i) and (ii) is contained in periodic reports filed with or furnished to the
Commission by the Registrant pursuant to Section 13 or Section 15(d) of the
Exchange Act that are incorporated by reference in the Registration Statement.

        (2) That, for the purpose of determining any liability under the
Securities Act, each such post-effective amendment shall be deemed to be a new
registration statement relating to the securities offered therein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

        (3) To remove from registration by means of a post-effective amendment
any of the securities being registered which remain unsold at the termination of
the offering.


                                      II-3

<PAGE>   55

        The undersigned Registrant hereby undertakes that, for purposes of
determining any liability under the Securities Act of 1933, each filing of the
Registrant's annual report pursuant to Section 13(a) or 15(d) of the Securities
Exchange Act of 1934 (and, where applicable, each filing of an employee benefit
plan's annual report pursuant to Section 15(d) of the Securities Exchange Act of
1934) that is incorporated by reference in the Registration Statement shall be
deemed to be a new registration statement relating to the securities offered
therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.

        Insofar as indemnification for liabilities arising under the Securities
Act of 1933 may be permitted to directors, officers and controlling persons of
the registrant pursuant to the provisions described in Item 15 above, or
otherwise, the Registrant has been advised that in the opinion of the Securities
and Exchange Commission such indemnification is against public policy as
expressed in the Securities Act and is, therefore, unenforceable. In the event
that a claim for indemnification against liabilities (other than the payment of
the Registrant of expenses incurred or paid by a director, officer or
controlling person of the Registrant in the successful defense of any action,
suit or proceeding) is asserted by such director, officer or controlling person
in connection with the securities being registered, the Registrant will, unless
in the opinion of its counsel the matter has been settled by controlling
precedent, submit to a court of appropriate jurisdiction the question whether
such indemnification by it is against public policy as expressed in the
Securities Act and will be governed by the final adjudication of such issue.

        The undersigned Registrant hereby undertakes that:

        (1) For purposes of determining any liability under the Securities Act
of 1933, the information omitted from the form of prospectus filed as part of
this registration statement in reliance upon Rule 430A and contained in a form
of prospectus filed by the Registrant pursuant to Rule 424(b)(1) or (4) or
497(h) under the Securities Act shall be deemed to be part of this Registration
Statement as of the time it was declared effective.

        (2) For the purpose of determining liability under the Securities Act of
1933, each post-effective amendment that contains a form of prospectus shall be
deemed to be a new registration statement relating to the securities offered
therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.


                                      II-4

<PAGE>   56

                                   SIGNATURES


        Pursuant to the requirements of the Securities Act of 1933, the
registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements for filing on Form S-3 and has duly caused this Registration
Statement to be signed on its behalf by the undersigned, thereunto duly
authorized, in the City of Santa Clara, State of California on this 6th day of
May, 1998.

                                       NETWORKS ASSOCIATES, INC.


                                       By: /s/ William L. Larson
                                           -------------------------------------
                                           William L. Larson

                                           Chief Executive Officer


                                      II-5

<PAGE>   57

        IN WITNESS WHEREOF, each of the undersigned has executed this Power of
Attorney as of the date indicated.

        Pursuant to the requirements of the Securities Act of 1933, this
Registration Statement has been signed by the following persons in the
capacities and on the dates indicated.

<TABLE>
<CAPTION>
            SIGNATURE                          TITLE                              DATE
- -------------------------------   ---------------------------------           ------------
<S>                               <C>                                         <C>
      /s/ William L. Larson       President, Chief Executive Officer          May 6, 1998
- -------------------------------   and Chairman of the Board
        William L. Larson         (Principal Executive Officer and
                                  Chairman of the Board)

      /s/ Prabhat K. Goyal        Vice President of Finance and               May 6, 1998
- -------------------------------   Administration, Chief Financial
        Prabhat K. Goyal          Officer, Treasurer and Secretary
                                  (Principal Financial and Accounting
                                  Officer)

      /s/ Virginia Gemmell        Director                                    May 6, 1998
- -------------------------------
        Virginia Gemmell

      /s/ Leslie G. Denend        Director                                    May 6, 1998
- -------------------------------
        Leslie G. Denend

       /s/ Edwin L. Harper        Director                                    May 6, 1998
- -------------------------------
         Edwin L. Harper


By: /s/ WILLIAM L. LARSON                                                     May 6, 1998
    ---------------------------
        William L. Larson as
        Attorney-in-Fact
</TABLE>


                                      II-6

<PAGE>   58

                               INDEX TO EXHIBITS

<TABLE>
<CAPTION>
Exhibit No.*    Description
- ------------    -----------
<S>             <C>
    3.1         Second Restated Certificate of Incorporation of Networks
                Associates, Inc., as amended on December 1, 1997, incorporated
                by reference to the Registrant's Registration Statement on Form
                S-4, filed with the Commission on March 25, 1998.

    3.2         Bylaws of Networks Associates, Inc., incorporated by reference
                to the Registrant's Registration Statement on Form S-4, filed
                with the Commission on March 25, 1998.

    3.3         Certificate of Designation of Series A Preferred Stock of
                Networks Associates, Inc., incorporated by reference to Exhibit
                3.3 of the Registrant's Form 10-Q for the Quarter ended
                September 30, 1996.

    4.1         Registration Rights Agreement, dated as of August 30, 1996, by
                and among Networks Associates, Inc., FSA Combination Corp. and
                FSA Corporation, incorporated by reference to the Registrant's
                Report on Form 8-K as filed with the Securities and Exchange
                Commission on September 24, 1996.

    4.2         Registration Rights Agreement, dated January 13, 1997 by and
                between Networks Associates, Inc. and the shareholders of Jade,
                incorporated by reference to the Registrant's Report on Form
                8-K, as filed with the Securities and Exchange Commission on
                March 14, 1997.

    4.3         Registration Rights Agreement, dated as of February 28, 1997, by
                and between Networks Associates, Inc. and shareholders of
                Schuijers, incorporated by reference to the Registrant's Report
                on Form 10-K, for the year ended December 31, 1996.

    4.4         Registration Rights Agreement, dated as of December 1, 1997, by
                and between Networks Associates, Inc. and shareholders of Helix
                Software Company, incorporated by reference to the Registrant's
                Registration Statement on Form S-3, filed with the Commission on
                February 12, 1998.

    4.5         Registration Rights Agreement, dated December 9, 1997 between
                the Registrant and certain of the shareholders of PGP,
                incorporated by reference to the Registrant's Registration
                Statement on Form S-3, filed with the Commission on February 12,
                1998.

    4.6         Registration Rights Agreement, dated as of February 13, 1998, by
                and between Networks Associates, Inc. and Morgan Stanley & Co.
                Incorporated.

    4.7         Indenture dated as of February 13, 1998 between Networks
                Associates, Inc. and State Street Bank and Trust Company of
                California, N.A., as Trustee.

    5.1         Opinion of Wilson Sonsini Goodrich & Rosati, Professional
                Corporation.

   21.1         Subsidiaries of Networks Associates, Inc., incorporated by
                reference to the Registrant's Registration Statement of 
                Form S-3, filed with the Commission on February 12, 1998.

   23.1         Consent of Wilson Sonsini Goodrich & Rosati, Professional
                Corporation (included in opinions filed as Exhibits 5.1 and
                8.1).

   23.3         Consent of Coopers & Lybrand L.L.P.

   24.1         Power of Attorney (see Page II-4).
</TABLE>



<PAGE>   1
                                                                     EXHIBIT 4.6

                          REGISTRATION RIGHTS AGREEMENT


        THIS REGISTRATION RIGHTS AGREEMENT is made and entered into as of
February 13, 1998 by and among Networks Associates, Inc., a Delaware corporation
("the Company"), and Morgan Stanley & Co. Incorporated (the "Initial Purchaser")
pursuant to the Purchase Agreement, dated as of February 10, 1998 (the "Purchase
Agreement"), between the Company and the Initial Purchaser. In order to induce
the Initial Purchaser to enter into the Purchase Agreement, the Company has
agreed to provide the registration rights set forth in this Agreement. The
execution of this Agreement is a condition to the closing under the Purchase
Agreement.

        The Company agrees with the Initial Purchaser, (i) for its benefit as
Initial Purchaser and (ii) for the benefit of the beneficial owners (including
the Initial Purchaser) from time to time of the Debentures (as defined herein)
and the beneficial owners from time to time of the Underlying Common Stock (as
defined herein) issued upon conversion of the Debentures (each of the foregoing
a "Holder" and together the "Holders"), as follows:

        SECTION 1. Definitions. Capitalized terms used herein without definition
shall have their respective meanings set forth in the Purchase Agreement. As
used in this Agreement, the following terms shall have the following meanings:

        Affiliate: With respect to any specified person, an "affiliate," as
defined in Rule 144, of such person.

        Amendment Effectiveness Deadline Date:  See Section 2(d) hereof.

        Applicable Conversion Price: The Applicable Conversion Price as of any
date of determination means the Applicable Principal Amount per $1,000 principal
amount at maturity of Debentures as of such date of determination divided by the
Conversion Rate in effect as of such date of determination or, if no Debentures
are then outstanding, the Conversion Rate that would be in effect were
Debentures then outstanding.

        Applicable Principal Amount: Applicable Principal Amount as of any date
of determination, with respect to each $1,000 principal amount at maturity of
Debentures means the sum of the initial issue price of such Debenture ($391.06)
plus accrued original issue discount with respect to such Debenture through such
date of determination or, if no Debentures are then outstanding, such sum
calculated as if such Debentures were then outstanding.

        Business Day: Each Monday, Tuesday, Wednesday, Thursday and Friday that
is not a day on which banking institutions in The City of New York or Los
Angeles, California are authorized or obligated by law or executive order to
close.



<PAGE>   2

        Common Stock: The shares of common stock, $.01 par value, of the Company
and any other shares of common stock as may constitute "Common Stock" for
purposes of the Indenture, including the Underlying Common Stock.

        Conversion Rate: Conversion Rate shall have the meaning assigned such
term in the Indenture.

        Damages Accrual Period:  See Section 2(e) hereof.

        Damages Payment Date: Each February 13 and August 13 in the case of
Debentures and the Underlying Common Stock.

        Debentures: The Zero Coupon Convertible Subordinated Debentures due 2018
of the Company to be purchased pursuant to the Purchase Agreement.

        Deferral Notice: See Section 3(i) hereof.

        Deferral Period:  See Section 3(i) hereof.

        Effectiveness Deadline Date:  See Section 2(a) hereof.

        Effectiveness Period: The period of two years from the later of (a) the
Issue Date or (b) the last date of original issuance of the Debentures or such
shorter period ending on the date that all Registrable Securities have ceased to
be Registrable Securities.

        Event:  See Section 2(e) hereof.

        Event Termination Date:  See Section 2(e) hereof.

        Event Date:  See Section 2(e) hereof.

        Exchange Act: The Securities Exchange Act of 1934, as amended, and the
rules and regulations of the SEC promulgated thereunder.

        Filing Deadline Date:  See Section 2(a) hereof.

        Holder:  See the second paragraph of this Agreement.

        Indenture: The Indenture dated as of the date hereof between the Company
and State Street Bank and Trust Company of California, N.A., as trustee,
pursuant to which the Debentures are being issued.

        Initial Purchaser:  Morgan Stanley & Co. Incorporated.

                                        2

<PAGE>   3

        Initial Shelf Registration Statement:  See Section 2(a) hereof.

        Issue Date:  February 13, 1998.

        Liquidated Damages Amount:  See Section 2(e) hereof.

        Losses:  See Section 6 hereof.

        Material Event: See Section 3(i) hereof.

        Notice and Questionnaire: A written notice delivered to the Company
containing substantially the information called for by the Selling
Securityholder Notice and Questionnaire attached as Annex A to the Offering
Memorandum of the Company dated February 10, 1998 relating to the Debentures.

        Notice Holder: On any date, any Holder that has delivered a Notice and
Questionnaire to the Company on or prior to such date.

        Prospectus: The prospectus included in any Registration Statement
(including, without limitation, a prospectus that discloses information
previously omitted from a prospectus filed as part of an effective registration
statement in reliance upon Rule 430A promulgated under the Securities Act), as
amended or supplemented by any amendment or prospectus supplement, including
post-effective amendments, and all materials incorporated by reference or
explicitly deemed to be incorporated by reference in such Prospectus.

        Purchase Agreement:  See the first paragraph of this Agreement.

        Record Holder: With respect to any Damages Payment Date relating to any
Debenture or Underlying Common Stock as to which any Liquidated Damages Amount
has accrued, the registered holder of such Debenture or Underlying Common Stock,
as the case may be, 15 days prior to the next succeeding Damages Payment Date.

        Registrable Securities: The Debentures and the Underlying Common Stock,
until such securities have been converted or exchanged, and, at all times
subsequent to any such conversion or exchange, any securities into or for which
such securities have been converted or exchanged, and any security issued with
respect thereto upon any stock dividend, split or similar event until, in the
case of any such security, (A) the earliest of (i) its effective registration
under the Securities Act and resale in accordance with the Registration
Statement covering it, (ii) expiration of the holding period that would be
applicable thereto under Rule 144(k) were it not held by an Affiliate of the
Company or (iii) its sale to the public pursuant to Rule 144, and (B) as a
result of the event or circumstance described in any of the foregoing clauses
(i) through (iii), the legends with respect to transfer restrictions required
under the Indenture are removed or removable in accordance with the terms of the
Indenture.

                                        3

<PAGE>   4

        Registration Expenses:  See Section 5 hereof.

        Registration Statement: Any registration statement of the Company that
covers any of the Registrable Securities pursuant to the provisions of this
Agreement, including the Prospectus, amendments and supplements to such
registration statement, including post-effective amendments, all exhibits, and
all materials incorporated by reference or explicitly deemed to be incorporated
by reference in such registration statement.

        Restricted Securities:  As this term is defined in Rule 144.

        Rule 144: Rule 144 under the Securities Act, as such Rule may be amended
from time to time, or any similar rule or regulation hereafter adopted by the
SEC.

        Rule 144A: Rule 144A under the Securities Act, as such Rule may be
amended from time to time, or any similar rule or regulation hereafter adopted
by the SEC.

        SEC:  The Securities and Exchange Commission.

        Securities Act: The Securities Act of 1933, as amended, and the rules
and regulations promulgated by the SEC thereunder.

        Shelf Registration Statement:  See Section 2(a) hereof.

        Subsequent Shelf Registration Statement:  See Section 2(b) hereof.

        TIA:  The Trust Indenture Act of 1939, as amended.

        Trustee: State Street Bank and Trust Company of California, N.A. (or any
successor entity), the Trustee under the Indenture.

        Underlying Common Stock:  The Common Stock into which the Debentures are
convertible or issued upon any such conversion.

        SECTION 2. Shelf Registration. (a) The Company shall prepare and file or
cause to be prepared and filed with the SEC, as soon as practicable but in any
event by the date (the "Filing Deadline Date") ninety (90) days after Issue
Date, a Registration Statement for an offering to be made on a delayed or
continuous basis pursuant to Rule 415 of the Securities Act (a "Shelf
Registration Statement") registering the resale from time to time by Holders
thereof of all of the Registrable Securities (the "Initial Shelf Registration
Statement"). The Initial Shelf Registration Statement shall be on Form S-3 or
another appropriate form permitting registration of such Registrable Securities
for resale by such Holders in accordance with the methods of distribution
elected by the Holders and set forth in the Initial Shelf Registration
Statement. The Company shall use its best efforts to cause the Initial Shelf
Registration

                                        4

<PAGE>   5

Statement to be declared effective under the Securities Act as promptly as is
practicable but in any event by the date (the "Effectiveness Deadline Date")
that is one hundred and eighty (180) days after the Issue Date, and to keep the
Initial Shelf Registration Statement (or any Subsequent Shelf Registration
Statement) continuously effective under the Securities Act until the expiration
of the Effectiveness Period. At the time the Initial Shelf Registration
Statement is declared effective, each Holder that became a Notice Holder on or
prior to the date 10 Business Days prior to such time of effectiveness shall be
named as a selling securityholder in the Initial Shelf Registration Statement
and the related Prospectus in such a manner as to permit such Holder to deliver
such Prospectus to purchasers of Registrable Securities in accordance with
applicable law. None of the Company's security holders (other than the Holders
of Registrable Securities) shall have the right to include any of the Company's
securities in the Shelf Registration Statement.

       (b) If the Initial Shelf Registration Statement or any Subsequent Shelf
Registration Statement ceases to be effective for any reason at any time during
the Effectiveness Period (other than because all Registrable Securities
registered thereunder shall have been resold pursuant thereto or shall have
ceased to be Registrable Securities), the Company shall use its reasonable best
efforts to obtain the prompt withdrawal of any order suspending the
effectiveness thereof, and in any event shall within thirty (30) days of such
cessation of effectiveness amend the Shelf Registration Statement in a manner
reasonably expected to obtain the withdrawal of the order suspending the
effectiveness thereof, or file an additional Shelf Registration Statement
covering all of the securities that as of the date of such filing are
Registrable Securities (a "Subsequent Shelf Registration Statement"). If a
Subsequent Shelf Registration Statement is filed, the Company shall use its
reasonable best efforts to cause the Subsequent Shelf Registration Statement to
become effective as promptly as is practicable after such filing and to keep
such Subsequent Shelf Registration Statement continuously effective until the
end of the Effectiveness Period.

       (c) The Company shall supplement and amend the Shelf Registration
Statement if required by the rules, regulations or instructions applicable to
the registration form used by the Company for such Shelf Registration Statement,
if required by the Securities Act or, to the extent to which the Company does
not reasonably object, as reasonably requested by the Initial Purchaser or by
the Trustee on behalf of the registered Holders.

       (d) Each Holder of Registrable Securities agrees that if such Holder
wishes to sell Registrable Securities pursuant to a Shelf Registration Statement
and related Prospectus, it will do so only in accordance with this Section 2(d)
and Section 3(i). Each Holder of Registrable Securities wishing to sell
Registrable Securities pursuant to a Shelf Registration and related Prospectus
agrees to deliver a Notice and Questionnaire to the Company at least three (3)
Business Days prior to any intended distribution of Registrable Securities under
the Shelf Registration Statement. From and after the date the Initial Shelf
Registration Statement becomes effective, the Company shall, as promptly as is
practicable after the date a Notice and Questionnaire is delivered, and in any
event within five (5) Business Days after such date, (i) if

                                        5

<PAGE>   6

required by applicable law, file with the SEC a post-effective amendment to the
Shelf Registration Statement or prepare and, if required by applicable law, file
a supplement to the related Prospectus or a supplement or amendment to any
document incorporated therein by reference or file any other required document
so that the Holder delivering such Notice and Questionnaire is named as a
selling securityholder in the Shelf Registration Statement and the related
Prospectus in such a manner as to permit such Holder to deliver such Prospectus
to purchasers of the Registrable Securities in accordance with applicable law
and, if the Company shall file a post-effective amendment to the Shelf
Registration Statement, use its reasonable best efforts to cause such
post-effective amendment to be declared effective under the Securities Act as
promptly as is practicable, but in any event by the date (the "Amendment
Effectiveness Deadline Date") that is forty-five (45) days after the date such
post-effective amendment is required by this clause to be filed; (ii) provide
such Holder copies of any documents filed pursuant to Section 2(d)(i); and (iii)
notify such Holder as promptly as practicable after the effectiveness under the
Securities Act of any post-effective amendment filed pursuant to Section
2(d)(i); provided, that if such Notice and Questionnaire is delivered during a
Deferral Period, the Company shall so inform the Holder delivering such Notice
and Questionnaire and shall take the actions set forth in clauses (i), (ii) and
(iii) above upon expiration of the Deferral Period in accordance with Section
3(i), provided, further, that if under applicable law the Company has more than
one option as to the type or manner of making any such filing, it will make the
required filing or filings in the manner or of a type reasonably expected to
result in the earliest availability of the Prospectus for effecting resales of
Registrable Securities. Notwithstanding anything contained herein to the
contrary, the Company shall be under no obligation to name any Holder that is
not a Notice Holder as a selling securityholder in any Registration Statement or
related Prospectus; provided, however, that any Holder that becomes a Notice
Holder pursuant to the provisions of this Section 2(d) (whether or not such
Holder was a Notice Holder at the time the Registration Statement was declared
effective) shall be named as a selling securityholder in the Registration
Statement or related Prospectus.

       (e) The parties hereto agree that the Holders of Registrable Securities
will suffer damages, and that it would not be feasible to ascertain the extent
of such damages with precision, if (i) the Initial Shelf Registration Statement
has not been filed on or prior to the Filing Deadline Date, (ii) the Initial
Shelf Registration Statement has not been declared effective under the
Securities Act on or prior to the Effectiveness Deadline Date, (iii) the Company
has failed to perform its obligations set forth in Section 2(d) within the time
period required therein, (iv) the aggregate duration of Deferral Periods in any
period exceeds the number of days permitted in respect of such period pursuant
to Section 3(i) hereof or (v) the number of Deferral Periods in any period
exceeds the number permitted in respect of such period pursuant to Section 3(i)
(each of the events of a type described in any of the foregoing clauses (i)
through (v) are individually referred to herein as an "Event," and the Filing
Deadline Date in the case of clause (i), the Effectiveness Deadline Date in the
case of clause (ii), the date by which the Company is required to perform its
obligations set forth in Section 2(d) in the case of clause (iii) (including the
filing of any post-effective amendment prior to the

                                        6

<PAGE>   7

Amendment Effectiveness Deadline Date), the date on which the aggregate duration
of Deferral Periods in any period exceeds the number of days permitted by
Section 3(i) hereof in the case of clause (iv), and the date of the commencement
of a Deferral Period that causes the limit on the number of Deferral Periods in
any period under Section 3(i) hereof to be exceeded in the case of clause (v),
being referred to herein as an "Event Date"). Events shall be deemed to continue
until the "Event Termination Date," which shall be the following dates with
respect to the respective types of Events: the date the Initial Registration
Statement is filed in the case of an Event of the type described in clause (i),
the date the Initial Registration Statement becomes effective under the
Securities Act in the case of an Event of the type described in clause (ii), the
date the Company performs its obligations set forth in Section 2(d) in the case
of an Event of the type described in clause (iii) (including, without
limitation, the date the relevant post-effective amendment to the Shelf
Registration Statement becomes effective under the Securities Act), termination
of the Deferral Period that caused the limit on the aggregate duration of
Deferral Periods in a period set forth in Section 3(i) to be exceeded in the
case of the commencement of an Event of the type described in clause (iv), and
termination of the Deferral Period the commencement of which caused the number
of Deferral Periods in a period permitted by Section 3(i) to be exceeded in the
case of an Event of the type described in clause (v).

        Accordingly, commencing on (and including) any Event Date and ending on
(but excluding) the next date on which there are no Events that have occurred
and are continuing (a "Damages Accrual Period"), the Company agrees to pay, as
liquidated damages and not as a penalty, an amount (the "Liquidated Damages
Amount"), payable on the Damages Payment Dates to Record Holders of Debentures
that are Registrable Securities and of shares of Underlying Common Stock issued
upon conversion of Debentures that are Registrable Securities, as the case may
be, accruing, for each portion of such Damages Accrual Period beginning on and
including a Damages Payment Date (or, in respect of the first time that the
Liquidation Damages Amount is to be paid to Holders on a Damages Payment Date as
a result of the occurrence of any particular Event, from the Event Date) and
ending on but excluding the next subsequent Damages Payment Date, at a rate per
annum equal to one-quarter of one percent (.25%) for the first 90-day period
from the Event Date and thereafter at a rate per annum equal to one-half of one
percent (.5%) of the aggregate Applicable Principal Amount of such Debentures
and the Applicable Conversion Price of such shares of Underlying Common Stock,
as the case may be, in each case determined as of the Business Day immediately
preceding such next subsequent Damages Payment Date; provided, that in the case
of a Damages Accrual Period that is in effect solely as a result of an Event of
the type described in clause (iii) of the immediately preceding paragraph, such
Liquidated Damages Amount shall be paid only to the Holders that have delivered
Notice and Questionnaires that caused the Company to incur the obligations set
forth in Section 2(d) the non-performance of which is the basis of such Event.
Notwithstanding the foregoing, no Liquidated Damages Amounts shall accrue as to
any Registrable Security from and after the earlier of (x) the date such
security is no longer a Registrable Security and (y) expiration of the
Effectiveness Period. The rate of accrual of the Liquidated Damages Amount with
respect to any period shall not exceed the rate

                                        7

<PAGE>   8

provided for in this paragraph notwithstanding the occurrence of multiple
concurrent Events. Following the cure of all Events requiring the payment by the
Company of Liquidated Damages Amounts to the Holders of Registrable Securities
pursuant to this Section 2(e), the accrual of Liquidated Damages Amounts will
cease (without in any way limiting the effect of any subsequent Event requiring
the payment of Liquidated Damages Amount by the Company).

        The Company shall pay on each Damages Payment Date that portion of the
Liquidated Damages Amount payable pursuant to this Section 2(e) in respect of
any Damages Accrual Period that has accrued from and including the next
preceding Damages Payment Date during such Damages Accrual Period (or, in
respect of the first such time that the Liquidation Damages Amount is to be paid
to Holders on a Damages Payment Date as a result of the occurrence of any
particular Event, from the Event Date) to but excluding such Damages Payment
Date on any Debenture or share of Underlying Common Stock to the Record Holders
thereof; provided, that any Liquidated Damages Amount accrued with respect to
any Debenture or portion thereof called for redemption on a redemption date or
converted into Underlying Common Stock on a conversion date prior to the Damages
Payment Date, shall, in any such event, be paid instead to the Holder who
submitted such Debenture or portion thereof for redemption or conversion on the
applicable redemption date or conversion date, as the case may be, on such date
(or promptly following the conversion date, in the case of conversion); provided
further, that, in the case of an Event of the type described in clause (iii) of
the first paragraph of this Section 2(e), such Liquidated Damages Amount shall
be paid only to the Holders entitled thereto pursuant to the first paragraph of
Section 2(e) by check mailed to the address set forth in the Notice and
Questionnaire delivered by such Holder. The Trustee shall be entitled, on behalf
of Holders of Debentures or Underlying Common Stock, to seek any available
remedy for the enforcement of this Agreement, including for the payment of such
Liquidated Damages Amount. Notwithstanding the foregoing, the parties agree that
the sole damages payable for a violation of the terms of this Agreement with
respect to which liquidated damages are expressly provided shall be such
liquidated damages. Nothing shall preclude a Notice Holder or Holder of
Registrable Securities from pursuing or obtaining specific performance or other
equitable relief with respect to this Agreement.

        All of the Company's obligations set forth in this Section 2(e) that are
outstanding with respect to any Registrable Security at the time such security
ceases to be a Registrable Security shall survive until such time as all such
obligations with respect to such security have been satisfied in full
(notwithstanding termination of this Agreement pursuant to Section 8(k)).

        The parties hereto agree that the liquidated damages provided for in
this Section 2(e) constitute a reasonable estimate of the damages that may be
incurred by Holders of Registrable Securities by reason of the failure of the
Shelf Registration Statement to be filed or declared effective or available for
effecting resales of Registrable Securities in accordance with the provisions
hereof.

                                        8

<PAGE>   9

        SECTION 3. Registration Procedures. In connection with the registration
obligations of the Company under Section 2 hereof, the Company shall:

       (a) Before filing any Registration Statement or Prospectus or any
amendments or supplements thereto with the SEC, furnish to the Initial Purchaser
copies of all such documents proposed to be filed and use its reasonable best
efforts to reflect in each such document when so filed with the SEC such
comments as the Initial Purchaser reasonably shall propose within two (2)
Business Days of the delivery of such copies to the Initial Purchaser.

       (b) Prepare and file with the SEC such amendments and post-effective
amendments to each Registration Statement as may be necessary to keep such
Registration Statement continuously effective for the applicable period
specified in Section 2(a); cause the related Prospectus to be supplemented by
any required Prospectus supplement, and as so supplemented to be filed pursuant
to Rule 424 (or any similar provisions then in force) under the Securities Act;
and use its best efforts to comply with the provisions of the Securities Act
applicable to it with respect to the disposition of all securities covered by
such Registration Statement during the Effectiveness Period in accordance with
the intended methods of disposition by the sellers thereof set forth in such
Registration Statement as so amended or such Prospectus as so supplemented.

       (c) As promptly as practicable give notice to the Notice Holders and the
Initial Purchaser (i) when any Prospectus, Prospectus supplement, Registration
Statement or post-effective amendment to a Registration Statement has been filed
with the SEC and, with respect to a Registration Statement or any post-effective
amendment, when the same has become effective, (ii) of any request, following
the effectiveness of the Initial Shelf Registration Statement under the
Securities Act, by the SEC or any other federal or state governmental authority
for amendments or supplements to any Registration Statement or related
Prospectus or for additional information, (iii) of the issuance by the SEC or
any other federal or state governmental authority of any stop order suspending
the effectiveness of any Registration Statement or the initiation or threatening
of any proceedings for that purpose, (iv) of the receipt by the Company of any
notification with respect to the suspension of the qualification or exemption
from qualification of any of the Registrable Securities for sale in any
jurisdiction or the initiation or threatening of any proceeding for such
purpose, (v) of the occurrence of (but not the nature of or details concerning)
a Material Event and (vi) of the determination by the Company that a
post-effective amendment to a Registration Statement will be filed with the SEC,
which notice may, at the discretion of the Company (or as required pursuant to
Section 3(i)), state that it constitutes a Deferral Notice, in which event the
provisions of Section 3(i) shall apply.

       (d) Use its reasonable best efforts to obtain the withdrawal of any order
suspending the effectiveness of a Registration Statement or the lifting of any
suspension of the qualification (or exemption from qualification) of any of the
Registrable Securities for sale in any

                                        9

<PAGE>   10

jurisdiction in which they have been qualified for sale, in either case at the
earliest possible moment.

       (e) If reasonably requested by the Initial Purchaser or any Notice
Holder, as promptly as practicable incorporate in a Prospectus supplement or
post-effective amendment to a Registration Statement such information as the
Initial Purchaser or such Notice Holder shall, on the basis of an opinion of
nationally-recognized counsel experienced in such matters, determine to be
required to be included therein by applicable law and make any required filings
of such Prospectus supplement or such post-effective amendment; provided, that
the Company shall not be required to take any actions under this Section 3(e)
that are not, in the reasonable opinion of counsel for the Company, in
compliance with applicable law.

       (f) As promptly as practicable furnish to each Notice Holder and the
Initial Purchaser, without charge, at least one (1) conformed copy of the
Registration Statement and any amendment thereto, including financial statements
but excluding schedules, all documents incorporated or deemed to be incorporated
therein by reference and all exhibits (unless requested in writing to the
Company by such Notice Holder or the Initial Purchaser, as the case may be).

       (g) During the Effectiveness Period, deliver to each Notice Holder in
connection with any sale of Registrable Securities pursuant to a Registration
Statement, without charge, as many copies of the Prospectus or Prospectuses
relating to such Registrable Securities (including each preliminary prospectus)
and any amendment or supplement thereto as such Notice Holder may reasonably
request; and the Company hereby consents (except during such periods that
Deferral Notice is outstanding and has not been revoked) to the use of such
Prospectus or each amendment or supplement thereto by each Notice Holder in
connection with any offering and sale of the Registrable Securities covered by
such Prospectus or any amendment or supplement thereto in the manner set forth
therein.

       (h) Prior to any public offering of the Registrable Securities pursuant
to the Shelf Registration Statement, register or qualify or cooperate with the
Notice Holders in connection with the registration or qualification (or
exemption from such registration or qualification) of such Registrable
Securities for offer and sale under the securities or Blue Sky laws of such
jurisdictions within the United States as any Notice Holder reasonably requests
in writing (which request may be included in the Notice and Questionnaire);
prior to any public offering of the Registrable Securities pursuant to the Shelf
Registration Statement, keep each such registration or qualification (or
exemption therefrom) effective during the Effectiveness Period in connection
with such Notice Holder's offer and sale of Registrable Securities pursuant to
such registration or qualification (or exemption therefrom) and do any and all
other acts or things necessary or advisable to enable the disposition in such
jurisdictions of such Registrable Securities in the manner set forth in the
relevant Registration Statement and the related Prospectus; provided, that the
Company will not be required to (i) qualify as a foreign corporation or as a
dealer in securities in any jurisdiction where it would not otherwise be


                                       10

<PAGE>   11

required to qualify but for this Agreement or (ii) take any action that would
subject it to general service of process in suits or to taxation in any such
jurisdiction where it is not then so subject.

       (i) Upon (A) the issuance by the SEC of a stop order suspending the
effectiveness of the Shelf Registration Statement or the initiation of
proceedings with respect to the Shelf Registration Statement under Section 8(d)
or 8(e) of the Securities Act, (B) the occurrence of any event or the existence
of any fact (a "Material Event") as a result of which any Registration Statement
shall contain any untrue statement of a material fact or omit to state any
material fact required to be stated therein or necessary to make the statements
therein not misleading, or any Prospectus shall contain any untrue statement of
a material fact or omit to state any material fact required to be stated therein
or necessary to make the statements therein, in the light of the circumstances
under which they were made, not misleading, or (C) the occurrence or existence
of any pending corporate development that, in the discretion of the Company,
makes it appropriate to suspend the availability of the Shelf Registration
Statement and the related Prospectus, (i) in the case of clause (B) above,
subject to the next sentence, as promptly as practicable prepare and file, if
necessary pursuant to applicable law, a post-effective amendment to such
Registration Statement or a supplement to the related Prospectus or any document
incorporated therein by reference or file any other required document that would
be incorporated by reference into such Registration Statement and Prospectus so
that such Registration Statement does not contain any untrue statement of a
material fact or omit to state any material fact required to be stated therein
or necessary to make the statements therein not misleading, and such Prospectus
does not contain any untrue statement of a material fact or omit to state any
material fact required to be stated therein or necessary to make the statements
therein, in the light of the circumstances under which they were made, not
misleading, as thereafter delivered to the purchasers of the Registrable
Securities being sold thereunder, and, in the case of a post-effective amendment
to a Registration Statement, subject to the next sentence, use their best
efforts to cause it to be declared effective as promptly as is practicable, and
(ii) give notice to the Notice Holders that the availability of the Shelf
Registration Statement is suspended (a "Deferral Notice") and, upon receipt of
any Deferral Notice, each Notice Holder agrees not to sell any Registrable
Securities pursuant to the Registration Statement until such Notice Holder's
receipt of copies of the supplemented or amended Prospectus provided for in
clause (i) above, or until it is advised in writing by the Company that the
Prospectus may be used, and has received copies of any additional or
supplemental filings that are incorporated or deemed incorporated by reference
in such Prospectus. The Company will use its best efforts to ensure that the use
of the Prospectus may be resumed (x) in the case of clause (A) above, as
promptly as is practicable, (y) in the case of clause (B) above, as soon as, in
the sole judgment of the Company, public disclosure of such Material Event would
not be prejudicial to or contrary to the interests of the Company or, if
necessary to avoid unreasonable burden or expense, as soon as practicable
thereafter and (z) in the case of clause (C) above, as soon as, in the
discretion of the Company, such suspension is no longer appropriate. The Company
shall be entitled to exercise its right under this Section 3(i) to suspend the
availability of the Shelf Registration Statement or any Prospectus, without


                                       11

<PAGE>   12

incurring any obligation to pay liquidated damages pursuant to Section 2(e), no
more than one (1) time in any three (3) month period or three (3) times in any
twelve (12) month period, and the period during which the availability of the
Registration Statement and any Prospectus is suspended (the "Deferral Period")
shall, without incurring any obligation to pay liquidated damages pursuant to
Section 2(e), not exceed thirty (30) days; provided, that in the case of a
Material Event relating to an acquisition or a probable acquisition or
financing, recapitalization, business combination or other similar transaction,
the Company may, without incurring any obligation to pay liquidated damages
pursuant to Section 2(e), deliver to Notice Holders a second notice to the
effect set forth above, which shall have the effect of extending the Deferral
Period by up to an additional thirty (30) days, or such shorter period of time
as is specified in such second notice; provided, that the aggregate duration of
any Deferral Periods shall not, without incurring any obligation to pay
liquidated damages pursuant to Section 2(e), exceed sixty (60) days in any three
(3) month period or ninety (90) days in any twelve (12) month period.

       (j) If requested in writing in connection with a disposition of
Registrable Securities pursuant to a Registration Statement, make reasonably
available for inspection during normal business hours by a representative for
the Notice Holders of such Registrable Securities and any broker-dealers,
attorneys and accountants retained by such Notice Holders, all relevant
financial and other records, pertinent corporate documents and properties of the
Company and its subsidiaries, and cause the appropriate executive officers,
directors and designated employees of the Company and its subsidiaries to make
reasonably available for inspection during normal business hours all relevant
information reasonably requested by such representative for the Notice Holders
or any such broker-dealers, attorneys or accountants in connection with such
disposition, in each case as is customary for similar "due diligence"
examinations; provided, however, that such persons shall first agree in writing
with the Company that any information that is reasonably and in good faith
designated by the Company in writing as confidential at the time of delivery of
such information shall be kept confidential by such persons and shall be used
solely for the purposes of exercising rights under this Agreement, unless (i)
disclosure of such information is required by court or administrative order or
is necessary to respond to inquiries of regulatory authorities, (ii) disclosure
of such information is required by law (including any disclosure requirements
pursuant to federal securities laws in connection with the filing of any
Registration Statement or the use of any prospectus referred to in this
Agreement), (iii) such information becomes generally available to the public
other than as a result of a disclosure or failure to safeguard by any such
person or (iv) such information becomes available to any such person from a
source other than the Company and such source is not bound by a confidentiality
agreement; and provided further, that the foregoing inspection and information
gathering shall, to the greatest extent possible, be coordinated on behalf of
all the Notice Holders and the other parties entitled thereto by the counsel
referred to in Section 5.

       (k) Use its reasonable best efforts to comply with all applicable rules
and regulations of the SEC and make generally available to its securityholders
earning statements (which need not be audited) satisfying the provisions of
Section 11(a) of the Securities Act and Rule 158


                                       12

<PAGE>   13

thereunder (or any similar rule promulgated under the Securities Act) no later
than 45 days after the end of any 12-month period (or 90 days after the end of
any 12-month period if such period is a fiscal year) commencing on the first day
of the first fiscal quarter of the Company commencing after the effective date
of a Registration Statement, which statements shall cover said 12-month periods.

       (l) Cooperate with each Notice Holder to facilitate the timely
preparation and delivery of certificates representing Registrable Securities
sold or to be sold pursuant to a Registration Statement, which certificates
shall not bear any restrictive legends, and cause such Registrable Securities to
be in such denominations as are permitted by the Indenture and registered in
such names as such Notice Holder may request in writing at least two Business
Days prior to any sale of such Registrable Securities.

       (m) Provide a CUSIP number for all Registrable Securities covered by each
Registration Statement not later than the effective date of such Registration
Statement and provide the Trustee and the transfer agent for the Common Stock
with printed certificates for the Registrable Securities that are in a form
eligible for deposit with The Depository Trust Company.

       (n) Provide such information as is required for any filings required to
be made with the National Association of Securities Dealers, Inc.

       (o) Upon (i) the filing of the Initial Registration Statement and (ii)
the effectiveness of the Initial Registration Statement, announce the same, in
each case by release to Reuters Economic Services and Bloomberg Business News.

        SECTION 4. Holder's Obligations. Each Holder agrees, by acquisition of
the Registrable Securities, that no Holder of Registrable Securities shall be
entitled to sell any of such Registrable Securities pursuant to a Registration
Statement or to receive a Prospectus relating thereto, unless such Holder has
furnished the Company with a Notice and Questionnaire as required pursuant to
Section 2(d) hereof (including the information required to be included in such
Notice and Questionnaire) and the information set forth in the next sentence.
Each Notice Holder agrees promptly to furnish to the Company all information
required to be disclosed in order to make the information previously furnished
to the Company by such Notice Holder not misleading and any other information
regarding such Notice Holder and the distribution of such Registrable Securities
as the Company may from time to time reasonably request. Any sale of any
Registrable Securities by any Holder shall constitute a representation and
warranty by such Holder that the information relating to such Holder and its
plan of distribution is as set forth in the Prospectus delivered by such Holder
in connection with such disposition, that such Prospectus does not as of the
time of such sale contain any untrue statement of a material fact relating to or
provided by such Holder or its plan of distribution and that such Prospectus
does not as of the time of such sale omit to state any material fact relating to
or provided by such Holder or its plan of distribution necessary to


                                       13

<PAGE>   14

make the statements in such Prospectus, in the light of the circumstances under
which they were made, not misleading.

        SECTION 5. Registration Expenses. The Company shall bear all fees and
expenses incurred in connection with the performance by the Company of its
obligations under Sections 2 and 3 of this Agreement whether or not any of the
Registration Statements become effective. Such fees and expenses shall include,
without limitation, (i) all registration and filing fees (including, without
limitation, fees and expenses (x) with respect to filings required to be made
with the National Association of Securities Dealers, Inc. and (y) of compliance
with federal and state securities or Blue Sky laws (including, without
limitation, reasonable fees and disbursements of the counsel specified in the
next sentence in connection with Blue Sky qualifications of the Registrable
Securities under the laws of such jurisdictions as the Notice Holders of a
majority of the Registrable Securities being sold pursuant to a Registration
Statement may designate), (ii) printing expenses (including, without limitation,
expenses of printing certificates for Registrable Securities in a form eligible
for deposit with The Depository Trust Company), (iii) duplication expenses
relating to copies of any Registration Statement or Prospectus delivered to any
Holders hereunder, (iv) fees and disbursements of counsel for the Company in
connection with the Shelf Registration Statement, (v) reasonable fees and
disbursements of the Trustee and its counsel and of the registrar and transfer
agent for the Common Stock and (vi) Securities Act liability insurance obtained
by the Company in its sole discretion. In addition, the Company shall bear or
reimburse the Notice Holders for the reasonable fees and disbursements of one
firm of legal counsel for the Holders, which shall initially be Gray Cary Ware &
Freidenrich LLP, but which may, with the written consent of the Initial
Purchaser (which shall not be unreasonably withheld), be another nationally
recognized law firm experienced in securities law matters designated by the
Company. In addition, the Company shall pay the internal expenses of the Company
(including, without limitation, all salaries and expenses of officers and
employees performing legal or accounting duties), the expense of any annual
audit, the fees and expenses incurred in connection with the listing of the
Registrable Securities on any securities exchange on which similar securities of
the Company are then listed and the fees and expenses of any person, including
special experts, retained by the Company. Notwithstanding the provisions of this
Section 5, each seller of Registrable Securities shall pay all registration
expenses to the extent required by applicable law.

        SECTION 6.  Indemnification.

       (a) Indemnification by the Company. The Company shall indemnify and hold
harmless each Notice Holder and each person, if any, who controls any Notice
Holder (within the meaning of either Section 15 of the Securities Act or Section
20 of the Exchange Act) from and against all losses, liabilities, claims,
damages and expenses (including, without limitation, any legal or other expenses
reasonably incurred in connection with defending or investigating any such
action or claim) (collectively, "Losses"), arising out of or based upon any
untrue statement or alleged untrue statement of a material fact contained in any
Registration Statement


                                              14

<PAGE>   15

or Prospectus or in any amendment or supplement thereto or in any preliminary
prospectus, or arising out of or based upon any omission or alleged omission to
state therein a material fact required to be stated therein or necessary to make
the statements therein not misleading, provided, however, that the Company shall
not be liable in any such case to the extent that any such Losses arise out of
or are based upon an untrue statement or alleged untrue statement or omission or
alleged omission from any of such documents in reliance upon and conformity with
any the information relating to such Holder furnished to the Company in writing
by such Holder expressly for use therein; provided, that the indemnification
contained in this paragraph shall not inure to the benefit of any Holder of
Registrable Securities (or to the benefit of any person controlling such Holder)
on account of any such Losses arising out of or based upon an untrue statement
or alleged untrue statement or omission or alleged omission made in any
preliminary prospectus if either (A) (i) such Holder failed to send or deliver a
copy of the Prospectus with or prior to the delivery of written confirmation of
the sale by such Holder to the person asserting the claim from which such Losses
arise and (ii) the Prospectus would have corrected such untrue statement or
alleged untrue statement or such omission or alleged omission, or (B) (x) such
untrue statement or alleged untrue statement, omission or alleged omission is
corrected in an amendment or supplement to the Prospectus and (y) having
previously been furnished by or on behalf of the Company with copies of the
Prospectus as so amended or supplemented, such Holder thereafter fails to
deliver such Prospectus as so amended or supplemented, with or prior to the
delivery of written confirmation of the sale of a Registrable Security to the
person asserting the claim from which such Losses arise.

       (b) Indemnification by Holder of Registrable Securities. Each Holder
agrees severally and not jointly to indemnify and hold harmless the Company and
its respective directors and officers, and each person, if any, who controls the
Company (within the meaning of either Section 15 of the Securities Act or
Section 20 of the Exchange Act), from and against all Losses arising out of or
based upon any untrue statement or alleged untrue statement of a material fact
contained in any Registration Statement or Prospectus or in any amendment or
supplement thereto or in any preliminary prospectus, or arising out of or based
upon any omission or alleged omission to state therein a material fact required
to be stated therein or necessary to make the statements therein not misleading,
to the extent, but only to the extent, that such untrue statement or alleged
untrue statement or omission or alleged omission was made in reliance upon and
in conformity with information furnished to the Company by such Holder expressly
for use in such Registration Statement or Prospectus. In no event shall the
liability of any selling Holder of Registrable Securities hereunder be greater
in amount than the dollar amount of the proceeds received by such Holder upon
the sale of the Registrable Securities pursuant to the Registration Statement
giving rise to such indemnification obligation.

       (c) Conduct of Indemnification Proceedings. In case any proceeding
(including any governmental investigation) shall be instituted involving any
person in respect of which indemnity may be sought pursuant to either of the two
preceding paragraphs, such person (the "indemnified party") shall promptly
notify the person against whom such indemnity may be sought (the "indemnifying
party") in writing and the indemnifying party, upon request of the


                                       15

<PAGE>   16

indemnified party, shall retain counsel reasonably satisfactory to the
indemnified party to represent the indemnified party and any others the
indemnifying party may designate in such proceeding and shall pay the reasonable
fees and disbursements of such counsel related to such proceeding. In any such
proceeding, any indemnified party shall have the right to retain its own
counsel, but the fees and expenses of such counsel shall be at the expense of
such indemnified party unless (i) the indemnifying party and the indemnified
party shall have mutually agreed to the retention of such counsel or (ii) the
named parties to any such proceeding (including any impleaded parties) include
both the indemnifying party and the indemnified party and representation of both
parties by the same counsel would be inappropriate due to actual or potential
differing interests between them. It is understood that the indemnifying party
shall not, in respect of the legal expenses of any indemnified party in
connection with any proceeding or related proceedings in the same jurisdiction,
be liable for the fees and expenses of more than one separate firm (in addition
to any local counsel) for all indemnified parties, and that all such fees and
expenses shall be reimbursed as they are incurred. Such separate firm shall be
designated in writing by, in the case of parties indemnified pursuant to Section
6(a), the Holders of a majority (with Holders of Debentures deemed to be the
Holders, for purposes of determining such majority, of the number of shares of
Underlying Common Stock into which such Debentures are or would be convertible
or exchangeable as of the date on which such designation is made) of the
Registrable Securities covered by the Registration Statement held by Holders
that are indemnified parties pursuant to Section 6(a) and, in the case of
parties indemnified pursuant to Section 6(b), the Company. The indemnifying
party shall not be liable for any settlement of any proceeding effected without
its written consent, but if settled with such consent or if there be a final
judgment for the plaintiff, the indemnifying party agrees to indemnify the
indemnified party from and against any loss or liability by reason of such
settlement or judgment. Notwithstanding the foregoing sentence, if at any time
an indemnified party shall have requested an indemnifying party to reimburse the
indemnified party for fees and expenses of counsel as contemplated by the second
and third sentences of this paragraph, the indemnifying party agrees that it
shall be liable for any settlement of any proceeding effected without its
written consent if (i) such settlement is entered into more than 30 days after
receipt by such indemnifying party of the aforesaid request and (ii) such
indemnifying party shall not have reimbursed the indemnified party in accordance
with such request prior to the date of such settlement. No indemnifying party
shall, without the prior written consent of the indemnified party, effect any
settlement of any pending or threatened proceeding in respect of which any
indemnified party is or could have been a party and indemnity could have been
sought hereunder by such indemnified party, unless such settlement includes an
unconditional release of such indemnified party from all liability on claims
that are the subject matter of such proceeding.

       (d) Contribution. To the extent that the indemnification provided for in
this Section 6 is unavailable to an indemnified party under Section 6(a) or 6(b)
hereof in respect of any Losses or is insufficient to hold such indemnified
party harmless, then each applicable indemnifying party, in lieu of indemnifying
such indemnified party, shall contribute to the amount paid or payable by such
indemnified party as a result of such Losses (i) in such


                                       16

<PAGE>   17

proportion as is appropriate to reflect the relative benefits received by the
indemnifying party or parties on the one hand and the indemnified party or
parties on the other hand or (ii) if the allocation provided by clause (i) above
is not permitted by applicable law, in such proportion as is appropriate to
reflect not only the relative benefits referred to in clause (i) above but also
the relative fault of the indemnifying party or parties on the one hand and of
the indemnified party or parties on the other hand in connection with the
statements or omissions that resulted in such Losses, as well as any other
relevant equitable considerations. Benefits received by the Company shall be
deemed to be equal to the total net proceeds from the initial placement pursuant
to the Purchase Agreement (before deducting expenses) of the Registrable
Securities to which such Losses relate. Benefits received by any Holder shall be
deemed to be equal to the value of receiving Registrable Securities that are
registered under the Securities Act. The relative fault of the Holders on the
one hand and the Company on the other hand shall be determined by reference to,
among other things, whether the untrue or alleged untrue statement of a material
fact or the omission or alleged omission to state a material fact relates to
information supplied by the Holders or by the Company, and the parties' relative
intent, knowledge, access to information and opportunity to correct or prevent
such statement or omission. The Holders' respective obligations to contribute
pursuant to this paragraph are several in proportion to the respective number of
Registrable Securities they have sold pursuant to a Registration Statement, and
not joint.

        The parties hereto agree that it would not be just and equitable if
contribution pursuant to this Section 6(d) were determined by pro rata
allocation or by any other method or allocation that does not take into account
the equitable considerations referred to in the immediately preceding paragraph.
The amount paid or payable by an indemnified party as a result of the Losses
referred to in the immediately preceding paragraph shall be deemed to include,
subject to the limitations set forth above, any legal or other expenses
reasonably incurred by such indemnified party in connection with investigating
or defending any such action or claim. Notwithstanding this Section 6(d), an
indemnifying party that is a selling Holder of Registrable Securities shall not
be required to contribute any amount in excess of the amount by which the total
price at which the Registrable Securities sold by such indemnifying party and
distributed to the public were offered to the public exceeds the amount of any
damages that such indemnifying party has otherwise been required to pay by
reason of such untrue or alleged untrue statement or omission or alleged
omission. No person guilty of fraudulent misrepresentation (within the meaning
of Section 11(f) of the Securities Act) shall be entitled to contribution from
any person who was not guilty of such fraudulent misrepresentation.

       (e) The indemnity, contribution and expense reimbursement obligations of
the parties hereunder shall be in addition to any liability any indemnified
party may otherwise have hereunder, under the Purchase Agreement or otherwise.

       (f) The indemnity and contribution provisions contained in this Section 6
shall remain operative and in full force and effect regardless of (i) any
termination of this Agreement, (ii)


                                       17

<PAGE>   18

any investigation made by or on behalf of any Holder or any person controlling
any Holder, or the Company, or the Company's officers or directors or any person
controlling the Company and (iii) the sale of any Registrable Securities by any
Holder.

        SECTION 7. Information Requirements. The Company covenants that, if at
any time before the end of the Effectiveness Period the Company is not subject
to the reporting requirements of the Exchange Act, it will cooperate with any
Holder of Registrable Securities and take such further reasonable action as any
Holder of Registrable Securities may reasonably request in writing (including,
without limitation, making such reasonable representations as any such Holder
may reasonably request), all to the extent required from time to time to enable
such Holder to sell Registrable Securities without registration under the
Securities Act within the limitation of the exemptions provided by Rule 144 and
Rule 144A under the Securities Act and customarily taken in connection with
sales pursuant to such exemptions. Upon the written request of any Holder of
Registrable Securities, the Company shall deliver to such Holder a written
statement as to whether it has complied with such filing requirements, unless
such a statement has been included in the Company's most recent report required
to be filed and filed pursuant to Section 13 or Section 15(d) of Exchange Act.
Notwithstanding the foregoing, nothing in this Section 7 shall be deemed to
require the Company to register any of its securities (other than the Common
Stock) under any section of the Exchange Act.

        SECTION 8.  Miscellaneous.

       (a) No Conflicting Agreements. The Company is not, as of the date hereof,
a party to, nor shall it, on or after the date of this Agreement, enter into,
any agreement with respect to its securities that conflicts with the rights
granted to the Holders of Registrable Securities in this Agreement. The Company
represents and warrants that the rights granted to the Holders of Registrable
Securities hereunder do not in any way conflict with the rights granted to the
Holders of the Company's securities under any other agreements.

       (b) Amendments and Waivers. The provisions of this Agreement, including
the provisions of this sentence, may not be amended, modified or supplemented,
and waivers or consents to departures from the provisions hereof may not be
given, unless the Company has obtained the written consent of Holders of a
majority of the then outstanding Underlying Common Stock constituting
Registrable Securities (with Holders of Debentures deemed to be the Holders, for
purposes of this Section 8(b), of the number of outstanding shares of Underlying
Common Stock into which such Debentures are or would be convertible or
exchangeable as of the date on which such consent is requested). Notwithstanding
the foregoing, a waiver or consent to depart from the provisions hereof with
respect to a matter that relates exclusively to the rights of Holders of
Registrable Securities whose securities are being sold pursuant to a
Registration Statement and that does not directly or indirectly affect the
rights of other Holders of Registrable Securities may be given by Holders of at
least a majority of the Registrable Securities being sold by such Holders
pursuant to such Registration Statement; provided, that the provisions of this
sentence may not be amended, modified, or


                                       18

<PAGE>   19

supplemented except in accordance with the provisions of the immediately
preceding sentence. Each Holder of Registrable Securities outstanding at the
time of any such amendment, modification, supplement, waiver or consent or
thereafter shall be bound by any such amendment, modification, supplement,
waiver or consent effected pursuant to this Section 8(b), whether or not any
notice, writing or marking indicating such amendment, modification, supplement,
waiver or consent appears on the Registrable Securities or is deliverable to
such Holder.

       (c) Notices. All notices and other communications provided for or
permitted hereunder shall be made in writing by hand delivery, by telecopier, by
courier guaranteeing overnight delivery or by first-class mail, return receipt
requested, and shall be deemed given (i) when made, if made by hand delivery,
(ii) upon confirmation, if made by telecopier, (iii) one (1) Business Day after
being deposited with such courier, if made by overnight courier or (iv) on the
date indicated on the notice of receipt, if made by first-class mail, to the
parties as follows:

           (w) if to a Holder of Registrable Securities, at the most current
           address given by such Holder to the Company in a Notice and
           Questionnaire or any amendment thereto;

           (x)    if to the Company, to:

                          Networks Associates, Inc.
                          2805 Bowers Avenue
                          Santa Clara, CA  95051
                          Attention:  Chief Executive Officer
                          Telecopy No.:  (408) 988-6054

                          and

           (y)    if to the Initial Purchaser, to:
                          Morgan Stanley & Co. Incorporated
                          1585 Broadway
                          New York, New York
                          Attention:
                          Telecopy No.:

or to such other address as such person may have furnished to the other persons
identified in this Section 8(c) in writing in accordance herewith.

       (d) Approval of Holders. Whenever the consent or approval of Holders of a
specified percentage of Registrable Securities is required hereunder,
Registrable Securities held by the Company or its affiliates (as such term is
defined in Rule 405 under the Securities Act) (other


                                       19

<PAGE>   20

than the Initial Purchaser or subsequent Holders of Registrable Securities if
such subsequent Holders are deemed to be such affiliates solely by reason of
their holdings of such Registrable Securities) shall not be counted in
determining whether such consent or approval was given by the Holders of such
required percentage.

       (e) Successors and Assigns. Any person who purchases any Registrable
Securities from the Initial Purchaser shall be deemed, for purposes of this
Agreement, to be an assignee of the Initial Purchaser. This Agreement shall
inure to the benefit of and be binding upon the successors and assigns of each
of the parties and shall inure to the benefit of and be binding upon each Holder
of any Registrable Securities.

       (f) Counterparts. This Agreement may be executed in any number of
counterparts and by the parties hereto in separate counterparts, each of which
when so executed shall be deemed to be original and all of which taken together
shall constitute one and the same agreement.

       (g) Headings. The headings in this Agreement are for convenience of
reference only and shall not limit or otherwise affect the meaning hereof.

       (h) Governing Law. THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK, WITHOUT REGARD TO CONFLICTS
OF LAWS PRINCIPLES THEREOF.

       (i) Severability. If any term, provision, covenant or restriction of this
Agreement is held to be invalid, illegal, void or unenforceable, the remainder
of the terms, provisions, covenants and restrictions set forth herein shall
remain in full force and effect and shall in no way be affected, impaired or
invalidated thereby, and the parties hereto shall use their best efforts to find
and employ an alternative means to achieve the same or substantially the same
result as that contemplated by such term, provision, covenant or restriction, it
being intended that all of the rights and privileges of the parties shall be
enforceable to the fullest extent permitted by law.

       (j) Entire Agreement. This Agreement is intended by the parties as a
final expression of their agreement and is intended to be a complete and
exclusive statement of the agreement and understanding of the parties hereto in
respect of the subject matter contained herein and the registration rights
granted by the Company with respect to the Registrable Securities. Except as
provided in the Purchase Agreement, there are no restrictions, promises,
warranties or undertakings, other than those set forth or referred to herein,
with respect to the registration rights granted by the Company with respect to
the Registrable Securities. This Agreement supersedes all prior agreements and
undertakings among the parties with respect to such registration rights. No
party hereto shall have any rights, duties or obligations other than those
specifically set forth in this Agreement. Without limiting the generality of the
foregoing, the Company shall have no obligation to participate in "road show"
or, except as specifically


                                       20

<PAGE>   21

provided in this Agreement, "due diligence" activities in connection with any
underwritten public offering of Registrable Securities, and the Company shall
have no obligation to enter into underwriting or indemnification agreements with
respect to, or deliver opinions, comfort letters or closing certificates in
connection with, any such underwritten public offering.

       (k) Termination. This Agreement and the obligations of the parties
hereunder shall terminate upon the end of the Effectiveness Period, except for
any liabilities or obligations under Sections 4, 5 or 6 hereof and the
obligations to make payments of and provide for liquidated damages under Section
2(e) hereof to the extent such damages accrue prior to the end of the
Effectiveness Period, each of which shall remain in effect in accordance with
their terms.




                                       21

<PAGE>   22


           IN WITNESS WHEREOF, the parties have executed this Agreement as of
the date first written above.

                                        NETWORKS ASSOCIATES, INC.



                                        By:
                                           -------------------------------------
                                             Name:
                                             Title:


Accepted as of the date first above written:



MORGAN STANLEY & CO. INCORPORATED
(for the benefit of itself and for the benefit of the Holders)


By:  MORGAN STANLEY & CO. INCORPORATED


By:
    -----------------------------------
       Name:
       Title:



                                       22


<PAGE>   1
                                                                     EXHIBIT 4.7


================================================================================

            Zero Coupon Convertible Subordinated Debentures due 2018


                            Networks Associates, Inc.
                                                     Issuer


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

                                    INDENTURE

                          Dated as of February 13, 1998

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



            State Street Bank and Trust Company of California, N.A.,
                                                     Trustee


================================================================================

<PAGE>   2

                             CROSS REFERENCE TABLE*

<TABLE>
<CAPTION>
  TIA                                                                                     Indenture
Section                                                                                    Section
- -------                                                                                   ---------
<S>                                                                                <C> 
310(a)(1)........................................................................             7.10
      (a)(2).....................................................................             7.10
      (a)(3).....................................................................           N.A.**
      (a)(4).....................................................................             N.A.
      (b)........................................................................       7.08; 7.10
      (c)........................................................................             N.A.
3.11(a)..........................................................................             7.11
       (b).......................................................................             7.11
       (c).......................................................................             N.A.
3.12(a)..........................................................................             2.05
       (b).......................................................................            12.03
       (c).......................................................................            12.03
       (d).......................................................................             7.06
3.13(a)..........................................................................             7.06
       (b)(1)....................................................................             N.A.
       (b)(2)....................................................................             7.06
       (c).......................................................................            12.02
       (d).......................................................................             7.06
3.14(a)..........................................................................       4.02;12.02
       (b).......................................................................             N.A.
       (c)(1)....................................................................            12.04
       (c)(2)....................................................................            12.04
       (c)(3)....................................................................             N.A.
       (d).......................................................................             N.A.
       (e).......................................................................            12.05
       (f).......................................................................             4.03
3.15(a)..........................................................................             7.01
       (b).......................................................................       7.05;12.02
       (c).......................................................................             7.01
       (d).......................................................................             7.01
       (e).......................................................................             6.11
3.16(a) (last sentence)..........................................................             2.08
       (a)(1)(A).................................................................             6.05
       (a)(1)(B).................................................................             6.04
       (a)(2)....................................................................             N.A.
       (b).......................................................................             6.07
3.17(a)(1).......................................................................             6.08
       (a)(2)....................................................................             6.09
       (b).......................................................................             2.04
3.18(a)..........................................................................            12.01
</TABLE>

*    Note:   This Cross Reference Table shall not, for any purpose, be deemed 
             to be part of the Indenture

**   Note:   N.A. means Not Applicable


                                       -2-

<PAGE>   3

                               TABLE OF CONTENTS(1)

<TABLE>
<CAPTION>
                                                                                               PAGE
                                                                                               ----
<S>                                                                                           <C>
ARTICLE 1 - DEFINITIONS AND INCORPORATION BY REFERENCE......................................     1

        Section 1.01. Definitions...........................................................     1
        Section 1.02. Other Definitions.....................................................     8
        Section 1.03. Incorporation by Reference of Trust Indenture Act.....................     9
        Section 1.04. Rules of Construction.................................................     9

ARTICLE 2 - THE SECURITIES..................................................................     9

        Section 2.01. Form and Dating.......................................................     9
        Section 2.02. Execution and Authentication..........................................    10
        Section 2.03. Registrar, Paying Agent and Conversion Agent..........................    10
        Section 2.04. Paying Agent to Hold Money and Securities in Trust....................    11
        Section 2.05. Securityholder Lists..................................................    11
        Section 2.06. Exchange and Registration of Transfer of Securities; Restrictions
                        on Transfers; Depositary............................................    11
        Section 2.07. Replacement Securities................................................    18
        Section 2.08. Outstanding Securities; Determinations of Holders' Action.............    18
        Section 2.09. Temporary Securities..................................................    19
        Section 2.10. Cancellation..........................................................    19
        Section 2.11. Persons Deemed Owners.................................................    20

ARTICLE 3 - REDEMPTION AND PURCHASES........................................................    20

        Section 3.01. Right to Redeem; Notices to Trustee...................................    20
        Section 3.02. Selection of Securities to be Redeemed................................    20
        Section 3.03. Notice of Redemption..................................................    21
        Section 3.04. Effect of Notice of Redemption........................................    22
        Section 3.05. Deposit of Redemption Price...........................................    22
        Section 3.06. Securities Redeemed in Part...........................................    22
        Section 3.07. Conversion Arrangement on Call for Redemption.........................    22
        Section 3.08. Purchase of Securities at Option of the Holder........................    23
        Section 3.09. Redemption at Option of the Holder upon a Fundamental Change..........    29
        Section 3.10. Effect of Purchase Notice or Fundamental Change Redemption Notice.....    30
        Section 3.11. Deposit of Purchase Price or Fundamental Change Redemption Price......    31
        Section 3.12. Securities Purchased in Part..........................................    31
        Section 3.13. Covenant to Comply with Securities Laws upon Purchase of Securities...    31
        Section 3.14. Repayment to the Company..............................................    31
</TABLE>

- --------

(1)     This Table of Contents shall not, for any purpose, be deemed to be part
        of the Indenture.


                                      -i-

<PAGE>   4

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                               PAGE
                                                                                               ----
<S>                                                                                           <C>
ARTICLE 4 - COVENANTS.......................................................................    32

        Section 4.01. Payment of Securities.................................................    32
        Section 4.02. Financial Information; SEC Reports....................................    32
        Section 4.03. Compliance Certificate................................................    33
        Section 4.04. Further Instruments and Acts..........................................    33
        Section 4.05. Maintenance of Office or Agency.......................................    33
        Section 4.06. Existence.............................................................    34
        Section 4.07. Maintenance of Properties.............................................    34
        Section 4.08. Payment of Taxes and Other Claims.....................................    34

ARTICLE 5 - SUCCESSOR CORPORATION...........................................................    34

        Section 5.01. When the Company May Merge or Transfer Assets.........................    34

ARTICLE 6 - DEFAULTS AND REMEDIES...........................................................    36

        Section 6.01. Events of Default.....................................................    36
        Section 6.02. Acceleration..........................................................    37
        Section 6.03. Other Remedies........................................................    37
        Section 6.04. Waiver of Past Defaults...............................................    37
        Section 6.05. Control by Majority...................................................    37
        Section 6.06. Limitation on Suits...................................................    38
        Section 6.07. Rights of Holders to Receive Payment..................................    38
        Section 6.08. Collection Suit by Trustee............................................    38
        Section 6.09. Trustee May File Proofs of Claim......................................    38
        Section 6.10. Priorities............................................................    39
        Section 6.11. Undertaking for Costs.................................................    40
        Section 6.12. Waiver of Stay, Extension or Usury Laws...............................    40

ARTICLE 7 - TRUSTEE.........................................................................    40

        Section 7.01. Duties of Trustee.....................................................    40
        Section 7.02. Rights of Trustee.....................................................    42
        Section 7.03. Individual Rights of Trustee..........................................    42
        Section 7.04. Trustee's Disclaimer..................................................    42
        Section 7.05. Notice of Defaults....................................................    42
        Section 7.06. Reports...............................................................    43
        Section 7.07. Compensation and Indemnity............................................    43
        Section 7.08. Replacement of Trustee................................................    44
</TABLE>


                                      -ii-

<PAGE>   5

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                               PAGE
                                                                                               ----
<S>                                                                                           <C>
        Section 7.09. Successor Trustee by Merger...........................................    44
        Section 7.10. Eligibility; Disqualification.........................................    44
        Section 7.11. Preferential Collection of Claims Against Company.....................    45

ARTICLE 8 - DISCHARGE OF INDENTURE..........................................................    45

        Section 8.01. Discharge of Liability on Securities..................................    45
        Section 8.02. Repayment to the Company..............................................    45

ARTICLE 9 - AMENDMENTS......................................................................    45

        Section 9.01. Without Consent of Holders............................................    45
        Section 9.02. With Consent of Holders...............................................    46
        Section 9.03. Compliance with Trust Indenture Act...................................    47
        Section 9.04. Revocation and Effect of Consents, Waivers and Actions................    47
        Section 9.05. Notation on or Exchange of Securities.................................    47
        Section 9.06. Trustee to Sign Supplemental Indentures...............................    48
        Section 9.07. Effect of Supplemental Indentures.....................................    48

ARTICLE 10 - SUBORDINATION..................................................................    48

        Section 10.01. Agreement of Subordination...........................................    48
        Section 10.02. Payments to Holders..................................................    48
        Section 10.03. Subrogation of Securities............................................    51
        Section 10.04. Authorization by Holders.............................................    52
        Section 10.05. Notice to Trustee....................................................    52
        Section 10.06. Trustee's Relation to Senior Indebtedness............................    53
        Section 10.07. No Impairment of Subordination.......................................    54
        Section 10.08. Reliance by Holders of Senior Indebtedness on Subordination 
                         Provisions ........................................................    54
        Section 10.09. Reinstatement of Subordination.......................................    54
        Section 10.10. Permitted Payments...................................................    54
        Section 10.11. Article Applicable to Paying Agents..................................    55
        Section 10.12. Treatment of Conversion Payments.....................................    55
        Section 10.13. Reliance on Judicial Order or Certificate of Liquidating Agent.......    55
        Section 10.14. Holders of Senior Indebtedness May File Proofs of Claim..............    55

ARTICLE 11 - CONVERSION.....................................................................    56

        Section 11.01. Conversion Privilege.................................................    56
        Section 11.02. Conversion Procedure.................................................    56
        Section 11.03. Fractional Shares....................................................    57
</TABLE>


                                     -iii-

<PAGE>   6
                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                               PAGE
                                                                                               ----
<S>                                                                                           <C>
        Section 11.04. Taxes on Conversion...................................................    57
        Section 11.05. Company to Provide Stock..............................................    57
        Section 11.06. Adjustment for Change in Capital Stock................................    58
        Section 11.07. Adjustment for Rights Issue...........................................    58
        Section 11.08. Adjustment for Other Distributions....................................    59
        Section 11.09. When Adjustment May be Deferred.......................................    62
        Section 11.10. When No Adjustment Required...........................................    62
        Section 11.11. Notice of Adjustment..................................................    62
        Section 11.12. Voluntary Increase....................................................    62
        Section 11.13. Notice of Certain Transactions........................................    63
        Section 11.14. Effect of Reclassification, Consolidation, Merger or Sale.............    63
        Section 11.15. Company Determination Final...........................................    64
        Section 11.16. Trustee's Adjustment Disclaimer.......................................    64
        Section 11.17. Simultaneous Adjustments..............................................    64
        Section 11.18. Successive Adjustments................................................    64
        Section 11.19. Rights Issued in Respect of Common Stock Issued Upon Conversion.......    64
        Section 11.20. General Considerations................................................    65

ARTICLE 12 - MISCELLANEOUS...................................................................    65

        Section 12.01. Trust Indenture Act...................................................    65
        Section 12.02. Notices...............................................................    65
        Section 12.03. Communication by Holders with other Holders...........................    66
        Section 12.04. Certificate and Opinion as to Conditions Precedent....................    66
        Section 12.05. Statements Required in Certificate or Opinion.........................    67
        Section 12.06. Separability Clause...................................................    67
        Section 12.07. Rules by Trustee, Paying Agent, Conversion Agent and Registrar........    67
        Section 12.08. Governing Law.........................................................    67
        Section 12.09. No Recourse Against Others............................................    67
        Section 12.10. Successors............................................................    68
        Section 12.11. Multiple Originals....................................................    68
</TABLE>

EXHIBIT A--Form of Security


                                      -iv-

<PAGE>   7

       INDENTURE, dated as of February 13, 1998, between Networks Associates,
Inc., a Delaware corporation (the "Company"), and State Street Bank and Trust
Company of California, N.A., a national banking association organized and
existing under the laws of the United States of America (the "Trustee").

       Each party agrees as follows for the benefit of the other parties and for
the equal and ratable benefit of the Holders of the Company's Zero Coupon
Convertible Subordinated Debentures due 2018:

                                    ARTICLE 1

       DEFINITIONS AND INCORPORATION BY REFERENCE

       SECTION 1.01. DEFINITIONS.

       "Affiliate" of any specified Person means any other Person directly or
indirectly controlling or controlled by or under direct or indirect common
control with such specified Person. For the purposes of this definition,
"control," when used with respect to any specified Person means the power to
direct or cause the direction of the management and policies of such Person,
directly or indirectly, whether through the ownership of voting securities, by
contract or otherwise; and the terms "controlling" and "controlled" have
meanings correlative to the foregoing.

       "Applicable Price" means (i) in the event of a Fundamental Change in
which the holders of the Common Stock receive only Cash, the amount of Cash
received by the holder of one share of Common Stock and (ii) in the event of any
other Fundamental Change, the average of the last reported sales price for the
Common Stock (determined as set forth in the definition of Current Market Price)
during the ten Trading Days prior to the record date for the determination of
the holders of Common Stock entitled to receive Cash, securities, property or
other assets in connection with such Fundamental Change, or, if there is no such
record date, the date upon which the holders of Common Stock shall have the
right to receive such Cash, securities, property or other assets in connection
with a Fundamental Change.

       "Board of Directors" means either the board of directors of the Company
or any duly authorized committee of such board.

       "Business Day" means each day of the year on which banking institutions
are not required or authorized to close in The City of New York or the city in
which the Corporate Trust Office is located.

       "Common Stock" means any stock of any class of the Company which has no
preference in respect of dividends or of amounts payable in the event of any
voluntary or involuntary liquidation, dissolution or winding up of the Company
and which is not subject to redemption by the Company. Subject to the provisions
of Section 11.14, however, shares issuable upon conversion of the




<PAGE>   8

Securities shall include only shares of Common Stock, par value of $.01 per
share, of the Company as it exists on the date of this Indenture or shares of
any class or classes resulting from any reclassification or reclassifications
thereof and which have no preference in respect of dividends or of amounts
payable in the event of any voluntary or involuntary liquidation, dissolution or
winding up of the Company and which are not subject to redemption by the
Company; provided that if at any time there shall be more than one such
resulting class, the shares of each such class then so issuable shall be
substantially in the proportion which the total number of shares of such class
resulting from all such reclassifications bears to the total number of shares of
all such classes resulting from all such reclassifications.

       "Company" means the party named as the "Company" in the first paragraph
of this Indenture until a successor replaces it pursuant to the applicable
provisions of this Indenture and, thereafter, shall mean such successor. The
foregoing sentence shall likewise apply to any subsequent such successor or
successors.

       "Company Request" or "Company Order" means a written request or order
signed in the name of the Company by its Chairman of the Board, a Vice Chairman,
its President or a Vice President, and by its Treasurer, an Assistant Treasurer,
its Secretary or an Assistant Secretary, and delivered to the Trustee.

       "Conversion Rate" shall have the meaning specified in Section 11.01.

       "Corporate Trust Office" or other similar term, shall mean the principal
office of the Trustee at which at any particular time its corporate trust
business shall be principally administered, which office is, at the date as of
which this Indenture is dated, located at 633 West 5th Street, 12th Floor, Los
Angeles, California 90071, Attention: Corporate Trust Department (Networks
Associates, Inc., Zero Coupon Convertible Subordinated Debentures due 2018).

        "Current Market Price" per share of the Common Stock on any date of
determination means the average of the daily closing prices of the Common Stock
on the Nasdaq National Market for the 5 consecutive trading days ending on and
including such date of determination. The last reported sale price for each day
shall be (i) if the Common Stock is listed on the Nasdaq National Market, the
last reported sale price of Common Stock on the Nasdaq National Market, or any
similar system of automated dissemination of quotations of securities prices
then in common use, if so quoted, (ii) if the Common Stock is not listed or
admitted for trading as described in clause (i), the last reported sale price of
the Common Stock on the NYSE or if the Common Stock is listed or admitted for
trading on any other national securities exchange, the last sale price, or the
closing bid price if no sale occurred, of the Common Stock on the principal
securities exchange on which the Common Stock is listed, or (iii) if not quoted
or listed as described in clauses (i) or (ii), the mean between the high bid and
low asked quotations for Common Stock as reported by the National Quotation
Bureau Incorporated if at least two securities dealers have inserted both bid
and asked quotations for the Common Stock on at least 5 of the 10 preceding
Trading Days. If none of the conditions set forth above is met, the last
reported sale price of Common Stock on any day or the average of such last


                                       -2-

<PAGE>   9

reported sale prices for any period shall be the fair market value of the Common
Stock as determined by a member firm of the NYSE selected by the Company.

       "Custodian" shall mean State Street Bank and Trust Company of California,
N.A., as custodian with respect to the Securities in global form, or any
successor entity thereto.

       "Default" means any event which is, or after notice or passage of time or
both would be, an Event of Default.

       "Depositary" means, with respect to the Securities issuable or issued in
whole or in part in global form, the Person specified in Section 2.06 as the
Depositary with respect to the Securities, until a successor shall have been
appointed and become such pursuant to the applicable provisions of this
Indenture, and thereafter, "Depositary" shall mean or include such successor.

       "Designated Senior Indebtedness" means any particular Senior Indebtedness
in which the instrument creating or evidencing the same or the assumption or
guarantee thereof (or related agreements or documents to which the Company is a
party) expressly provides that such Senior Indebtedness shall be "Designated
Senior Indebtedness" for purposes of this Indenture; provided that such
instrument, agreement or other document may place limitations and conditions on
the right of such Senior Indebtedness to exercise the rights of Designated
Senior Indebtedness. If any payment made to any holder of any Designated Senior
Indebtedness or its Representative with respect to such Designated Senior
Indebtedness is rescinded or must otherwise be returned by such holder or
Representative upon the insolvency, bankruptcy or reorganization of the Company
or otherwise, the reinstated Indebtedness of the Company arising as a result of
such rescission or return shall constitute Designated Senior Indebtedness
effective as of the date of such rescission or return.

       "Exchange Act" means the Securities Exchange Act of 1934, as amended, and
the rules and regulations of the SEC promulgated thereunder.

       "Fundamental Change" means the occurrence of any transaction or event in
connection with which all or substantially all the Common Stock shall be
exchanged for, converted into, acquired for or constitute solely the right to
receive (whether by means of an exchange offer, liquidation, tender offer,
consolidation, merger, combination, reclassification, recapitalization or
otherwise) consideration which is not all or substantially all common stock
listed (or, upon consummation of such transaction or event, will be listed) on a
United States national securities exchange or approved for quotation in the
Nasdaq National Market or any similar system of automated dissemination of
quotations of securities prices.

       "Holder" or "Securityholder" means a Person in whose name a Security is
registered on the Registrar's books.

       "Indebtedness" means, with respect to any Person, and without
duplication, (a) all indebtedness, obligations and other liabilities (contingent
or otherwise) of such Person for borrowed money (including obligations of the
Company in respect of overdrafts, foreign exchange contracts, currency


                                       -3-

<PAGE>   10

exchange agreements, interest rate protection agreements, and any loans or
advances from banks, whether or not evidenced by notes or similar instruments)
or evidenced by bonds, debentures, notes or similar instruments (whether or not
the recourse of the lender is to the whole of the assets of such Person or to
only a portion thereof), (b) all reimbursement obligations and other liabilities
(contingent or otherwise) of such Person with respect to letters of credit, bank
guarantees or bankers' acceptances, (c) all obligations and liabilities
(contingent or otherwise) in respect of leases of such Person (i) required, in
conformity with generally accepted accounting principles, to be accounted for as
capitalized lease obligations on the balance sheet of such Person, or (ii)
required, in conformity with generally accepted accounting principles, to be
accounted for as an operating lease, provided either (A) such operating lease
requires, at the end of the term thereof, that such Person make any payment
other than accrued periodic rent in the event that such Person does not acquire
the leased real property and related fixtures subject to such lease, or (B) such
Person has an option to acquire the leased real property and related fixtures,
whether such option is exercisable at any time or under specific circumstances,
(d) all obligations of such Person (contingent or otherwise) with respect to an
interest rate swap, cap or collar agreement or other similar instrument or
agreement, (e) all direct or indirect guaranties or similar agreements by such
Person in respect of, and obligations or liabilities (contingent or otherwise)
of such Person to purchase or otherwise acquire or otherwise assure a creditor
against loss in respect of indebtedness, obligations or liabilities of another
Person of the kind described in clauses (a) through (d), (f) any indebtedness or
other obligations described in clauses (a) through (d) secured by any mortgage,
pledge, lien or other encumbrance existing on property which is owned or held by
such Person, regardless of whether the indebtedness or other obligation secured
thereby shall have been assumed by such Person and (g) any and all deferrals,
renewals, extensions and refundings of, or amendments, modifications or
supplements to, any indebtedness, obligation or liability of the kind described
in clauses (a) through (f).

       "Indenture" means this Indenture, as amended or supplemented from time to
time in accordance with the terms hereof.

       "Initial Purchaser" means Morgan Stanley & Co. Incorporated.

       "Issue Date" of any Security means the date on which the Security was
originally issued or deemed issued as set forth on the face of the Security.

       "Issue Price" of any Security means, in connection with the original
issuance of such Security, the initial issue price at which the Security is
issued as set forth on the face of the Security.

       "Legal Holiday" is any day other than a Business Day. If any specified
date (including a date for giving notice) is a Legal Holiday, the action shall
be taken on the next succeeding date that is not a Legal Holiday, and to the
extent applicable no Original Issue Discount or interest, if any, shall accrue
for the intervening period.

       "Liquidated Damages" shall have the meaning specified in the Registration
Rights Agreement.

                                       -4-

<PAGE>   11

       "Nasdaq National Market" means the electronic inter-dealer quotation
system operated by NASDAQ Stock Market, Inc., a subsidiary of the National
Association of Securities Dealers, Inc.

       "NYSE" means The New York Stock Exchange, Inc.

       "Officer" means the Chairman of the Board, any Vice Chairman, the
President, any Vice President, the Treasurer or the Secretary or any Assistant
Treasurer or Assistant Secretary of the Company.

       "Officers' Certificate" means a written certificate containing the
information specified in Sections 12.04 and 12.05, signed in the name of the
Company by its Chairman of the Board, a Vice Chairman, its President or a Vice
President, and by its Treasurer, an Assistant Treasurer, its Secretary or an
Assistant Secretary, and delivered to the Trustee.

       "Opinion of Counsel" means a written opinion containing the information
specified in Sections 12.04 and 12.05, from legal counsel who is acceptable to
the Trustee. The counsel may be an employee of, or counsel to, the Company or
the Trustee.

       "Original Issue Discount" of any Security means the difference between
the Issue Price and the Principal Amount of the Security as set forth on the
face of the Security. For purposes of this Indenture and the Securities, accrual
of Original Issue Discount shall be calculated on the basis of a 360 day year of
twelve 30 day months.

       "Payment Blockage Notice" has the meaning specified in Section 10.02.

       "Person" means any individual, corporation, partnership, limited
liability company, joint venture, association, joint-stock company, trust,
unincorporated organization, or government or any agency or political
subdivision thereof.

       "Portal Market" means The Portal Market operated by the National
Association of Securities Dealers, Inc. or any successor thereto.

       "Principal" or "Principal Amount" of a Security means the Principal
Amount as set forth on the face of the Security.

       "QIB" means a "qualified institutional buyer" as defined in Rule 144A.

       "Redemption Date" shall mean a date specified for redemption of the
Securities (other than redemption upon a Fundamental Change at the option of the
Securityholder) in accordance with the terms of the Securities and Section 3.01
of this Indenture.

       "Redemption Price" shall have the meaning set forth in paragraph 5 of the
Securities.


                                      -5-

<PAGE>   12

       "Reference Market Price" shall initially mean $38.17 and in the event of
any adjustment to the Conversion Rate pursuant to Article 11, the Reference
Market Price shall be adjusted to equal the initial Reference Market Price
multiplied by a fraction the numerator of which is the Conversion Rate specified
in the form of Security attached hereto as Exhibit A (without regard to any
adjustment thereto), and the denominator of which is the Conversion Rate
following such adjustment.

       "Registration Rights Agreement" means that certain Registration Rights
Agreement, dated as of the date hereof, between the Company and the Initial
Purchaser.

       "Regulation S" means Regulation S as promulgated under the Securities
Act, or any successor rule.

       "Representative" means (a) the indenture trustee or other trustee, agent
or representative for any Senior Indebtedness or (b) with respect to any Senior
Indebtedness that does not have any such trustee, agent or other representative,
(i) in the case of such Senior Indebtedness issued pursuant to an agreement
providing for voting arrangements as among the holders or owners of such Senior
Indebtedness, any holder or owner of such Senior Indebtedness acting with the
consent of the required Persons necessary to bind such holders or owners of such
Senior Indebtedness and (ii) in the case of all other such Senior Indebtedness,
the holder or owner of such Senior Indebtedness.

       "Rule 144A" means Rule 144A as promulgated under the Securities Act, or
any successor rule.

       "Rule 144(k)" means Rule 144(k) as promulgated under the Securities Act,
or any successor rule.

       "SEC" means the Securities and Exchange Commission.

       "Securities" means the Zero Coupon Convertible Subordinated Debentures
due 2018.

       "Securities Act" means the Securities Act of 1933, as amended, and the
rules and regulations of the SEC promulgated thereunder.

       "Securityholder" or "Holder" means a Person in whose name a Security is
registered on the Registrar's books.

       "Senior Indebtedness" means the principal of, premium, if any, interest
(including all interest accruing subsequent to the commencement of any
bankruptcy or similar proceeding, whether or not a claim for post-petition
interest is allowable as a claim in any such proceeding), original issue
discount, rent and end of term payments payable on or in connection with, and,
to the extent not included in the foregoing, all amounts payable as fees, costs,
expenses, liquidated damages, indemnities, repurchase and other put obligations
and other amounts to the extent accrued or due on or in connection with,
Indebtedness of the Company, whether outstanding on the date of this Indenture
or thereafter created, incurred, assumed, guaranteed or in effect guaranteed by
the Company (including all deferrals, renewals, extensions or refundings of, or
amendments,


                                       -6-

<PAGE>   13

modifications or supplements to, the foregoing). Notwithstanding the foregoing,
the term Senior Indebtedness shall not include (i) any Indebtedness of the
Company that is not secured, (ii) Indebtedness evidenced by the Securities,
(iii) Indebtedness of the Company to any subsidiary of the Company, a majority
of the voting stock of which is owned, directly or indirectly, by the Company,
(iv) accounts payable or other indebtedness to trade creditors created or
assumed by the Company in the ordinary course of business and (v) any particular
Indebtedness in which the instrument creating or evidencing the same or the
assumption or guarantee thereof expressly provides that such Indebtedness shall
not be senior in right of payment to, or is pari passu with, or is subordinated
or junior to, the Securities. If any payment made to any holder of any Senior
Indebtedness or its Representative with respect to such Senior Indebtedness is
rescinded or must otherwise be returned by such holder or Representative upon
the insolvency, bankruptcy or reorganization of the Company or otherwise, the
reinstated Indebtedness of the Company arising as a result of such rescission or
return shall constitute Senior Indebtedness effective as of the date of such
rescission or return.

       "Stated Maturity", when used with respect to any Security, means the date
specified in such Security as the fixed date on which an amount equal to the
Principal of such Security is due and payable.

       "Significant Subsidiary" means, with respect to any Person, a Subsidiary
of such Person organized under the laws of the United States of America, any
state thereof, or the District of Columbia that would constitute a "significant
subsidiary" as such term is defined under Rule 1-02 of Regulation S-X of the
Securities and Exchange Commission.

       "Subsidiary" means, with respect to any Person, (i) any corporation,
association or other business entity of which more than 50% of the total voting
power of shares of capital stock entitled (without regard to the occurrence of
any contingency) to vote in the election of directors, managers or trustees
thereof is at the time owned or controlled, directly or indirectly, by such
Person or one or more of the other subsidiaries of that Person (or a combination
thereof) and (ii) any partnership (a) the sole general partner or managing
general partner of which is such Person or a subsidiary of such Person or (b)
the only general partners of which are such Person or of one or more
subsidiaries of such Person (or any combination thereof).

       "TIA" means the Trust Indenture Act of 1939, as amended, as in effect on
the date of this Indenture, except as provided in Section 9.03.

       "Trading Day" means a day during which trading in securities generally
occurs on the Nasdaq National Market or, if the applicable security is not
quoted on the Nasdaq National Market, on the NYSE, or if the applicable security
is not listed on the NYSE, on the principal other national or regional
securities exchange on which the applicable security is then listed or, if the
applicable security is not listed on a national or regional securities exchange,
on the principal other market on which the applicable security is then traded.


                                       -7-

<PAGE>   14

       "Trust Officer" means any officer of the Trustee assigned by the Trustee
to administer its corporate trust matters.

       "Trustee" means the party named as the "Trustee" in the first paragraph
of this Indenture until a successor replaces it pursuant to the applicable
provisions of this Indenture and, thereafter, shall mean such successor. The
foregoing sentence shall likewise apply to any subsequent such successor or
successors.

       "U.S. Person" shall have the meaning set forth in Regulation S.

       "Voting Stock" shall mean stock of any class or classes, however
designated, having ordinary voting power for the election of a majority of the
board of directors of a corporation, other than stock having such power only by
reason of the happening of a contingency.

       SECTION 1.02. OTHER DEFINITIONS.

<TABLE>
<CAPTION>
                                                                                Defined in
Term                                                                            Section
- ------------------------------------------------------------------------       -----------
<S>                                                                            <C> 
"Bankruptcy Law"........................................................        6.01
"Cash"..................................................................        3.08(b)
"Company Notice"........................................................        3.08(e)
"Company Notice Date"...................................................        3.08(c)
"Conversion Agent"......................................................        2.03
"Expiration Time".......................................................       11.08(c)
"Event of Default"......................................................        6.01
"Fundamental Change Redemption Date"....................................        3.09(a)
"Fundamental Change Redemption Notice"..................................        3.09(a)
"Fundamental Change Redemption Price"...................................        3.09(a)
"Market Price"..........................................................        3.08(d)
"Notice of Default".....................................................        6.01
"Over-allotment Option".................................................        2.02
"Paying Agent"..........................................................        2.03
"Purchase Date".........................................................        3.08(a)
"Purchase Notice".......................................................        3.08(a)
"Purchase Price"........................................................        3.08(a)
"Purchased Shares"......................................................       11.08(c)
"Registrar".............................................................        2.03
"Sale Price"............................................................        3.08(d)
"Tender Expiration Time"................................................       11.08(d)
"Tender Purchased Shares"...............................................       11.08(d)
</TABLE>


                                      -8-
<PAGE>   15

       SECTION 1.03. INCORPORATION BY REFERENCE OF TRUST INDENTURE ACT. Whenever
this Indenture refers to a provision of the TIA, the provision is incorporated
by reference in and made a part of this Indenture. The following TIA terms used
in this Indenture have the following meanings:

       "Commission" means the SEC.

       "Indenture Securities" means the Securities.

       "Indenture Security Holder" means a Securityholder.

       "Indenture to be Qualified" means this Indenture.

       "Indenture Trustee" or "Institutional Trustee" means the Trustee.

       All other TIA terms used in this Indenture that are defined by the TIA,
defined by TIA reference to another statute or defined by SEC rules have the
meanings assigned to them by such definitions.

       SECTION 1.04. RULES OF CONSTRUCTION. Unless the context otherwise
requires:

             (1) a term has the meaning assigned to it;

             (2) an accounting term not otherwise defined has the meaning
assigned to it in accordance with generally accepted accounting principles as in
effect from time to time;

             (3) "or" is not exclusive;

             (4) "including" means including, without limitation; and

             (5) words in the singular include the plural, and words in the
plural include the singular.

                                    ARTICLE 2

                                 THE SECURITIES

       SECTION 2.01. FORM AND DATING. The Securities and the Trustee's
certificate of authentication for the Securities shall be substantially in the
form of Exhibit A, which is a part of this Indenture. The Securities may have
notations, legends or endorsements required by law, stock exchange rule or usage
(provided that any such notation, legend or endorsement required by usage is in
a form acceptable to the Company). The Company shall provide any such notations,
legends or endorsements to the Trustee in writing. Each Security shall be dated
the date of its authentication.


                                      -9-
<PAGE>   16

       Any Security in global form shall represent such of the outstanding
Securities as shall be specified therein and shall provide that it shall
represent the aggregate amount of outstanding Securities from time to time
endorsed thereon and that the aggregate amount of outstanding Securities
represented thereby may from time to time be increased or reduced to reflect
transfers or exchanges permitted hereby. Any endorsement of a Security in global
form to reflect the amount of any increase or decrease in the amount of
outstanding Security represented thereby shall be made by the Trustee or the
Custodian, at the direction of the Trustee, in such manner and upon instructions
given by the Holder of such Security in accordance with this Indenture. Payment
of Principal Amount, Issue Price, accrued Original Issue Discount, accrued
Liquidated Damages, if any, Redemption Price, Purchase Price, Fundamental Change
Redemption Price or interest, if any, on any Security in global form shall be
made to the Holder of such Security.

       SECTION 2.02. EXECUTION AND AUTHENTICATION. The Securities shall be
executed on behalf of the Company by its Chairman of the Board, one of its Vice
Chairmen, its President or one of its Vice Presidents, under its corporate seal
reproduced thereon and attested by its Treasurer or Secretary or one of its
Assistant Treasurers or one of its Assistant Secretaries. The signature of any
of these officers on the Securities may be manual or facsimile.

       Securities bearing the manual or facsimile signatures of individuals who
were at any time the proper Officers of the Company shall bind the Company,
notwithstanding that such individuals or any of them have ceased to hold such
offices prior to the authentication and delivery of such Securities or did not
hold such offices at the date of authentication of such Securities.

       No Security shall be entitled to any benefit under this Indenture or be
valid or obligatory for any purpose unless there appears on such Security a
certificate of authentication substantially in the form provided for herein duly
executed by the Trustee by manual signature of an authorized officer, and such
certificate upon any Security shall be conclusive evidence, and the only
evidence, that such Security has been duly authenticated and delivered
hereunder.

       The Trustee shall authenticate and deliver Securities for original issue
in an aggregate Principal Amount of up to $885,500,000 upon a Company Order
without any further action by the Company. The aggregate Principal Amount of
Securities outstanding at any time may not exceed the amount set forth in the
foregoing sentence, subject to the proviso set forth therein, except as provided
in Section 2.07.

       SECTION 2.03. REGISTRAR, PAYING AGENT AND CONVERSION AGENT. The Company
shall maintain an office or agency where Securities may be presented for
registration of transfer or for exchange ("Registrar"), an office or agency
where Securities may be presented for purchase or payment ("Paying Agent") and
an office or agency where Securities may be presented for conversion into Common
Stock ("Conversion Agent"). The Registrar shall keep a register of the
Securities and of their transfer and exchange. The Company may have one or more
co-registrars, one or more additional paying agents and one or more additional
conversion agents. The term Paying Agent includes any additional paying agent.
The term Conversion Agent includes any additional conversion agent, including
any named pursuant to Section 4.05.


                                      -10-
<PAGE>   17

       The Company shall enter into an appropriate agency agreement with any
Registrar, Paying Agent, Conversion Agent or co-registrar (if not the Trustee or
an Affiliate of the Trustee). The agreement shall implement the provisions of
this Indenture that relate to such agent and the Security. The Company shall
notify the Trustee of the name and address of any such agent. If the Company
fails to maintain a Registrar, Paying Agent or Conversion Agent, the Trustee
shall act as such and shall be entitled to appropriate compensation therefor
pursuant to Section 7.07. The Company or an Affiliate of the Company may act as
Paying Agent, Registrar, Conversion Agent or co-registrar.

       The Company initially appoints the Trustee as Registrar, Conversion Agent
and Paying Agent in connection with the Securities.

       SECTION 2.04. PAYING AGENT TO HOLD MONEY AND SECURITIES IN TRUST. Except
as otherwise provided herein, prior to or on each due date of payments in
respect of any Security, the Company shall deposit with the Paying Agent a sum
of money or securities sufficient to make such payments when such payments are
due. The Company shall require the Paying Agent (other than the Trustee) to
agree in writing that the Paying Agent shall hold in trust for the benefit of
Holders or the Trustee all money and securities held by the Paying Agent for the
making of payments in respect of the Securities and shall notify the Trustee of
any default by the Company in making any such payment. At any time during the
continuance of any such default, the Paying Agent shall, upon the written
request of the Trustee, forthwith pay to the Trustee all money and securities so
held in trust. If the Company or an Affiliate of the Company acts as Paying
Agent, it shall segregate the money and securities held by it as Paying Agent
and hold it as a separate trust fund. The Company at any time may require the
Paying Agent to pay all money and securities held by it to the Trustee and to
account for any funds and securities disbursed by it. Upon doing so, the Paying
Agent shall have no further liability for the money or securities.

       SECTION 2.05. SECURITYHOLDER LISTS. The Trustee shall preserve in as
current a form as is reasonably practicable the most recent list available to it
of the names and addresses of Holders. If the Trustee is not the Registrar, the
Company shall cause to be furnished to the Trustee at least semiannually on
February 13 and August 13 a listing of Holders dated within 15 days of the date
on which the list is furnished and at such other times as the Trustee may
request in writing a list in such form and as of such date as the Trustee may
reasonably require of the names and addresses of Holders.

       SECTION 2.06. EXCHANGE AND REGISTRATION OF TRANSFER OF SECURITIES;
RESTRICTIONS ON TRANSFERS; DEPOSITARY.

       (a) Upon surrender for registration of transfer of any Security at any
office or agency of the Company designated as Registrar or co-registrar pursuant
to Section 2.03 and satisfaction of the requirements for such transfer set forth
in this Section 2.06, the Company shall execute, and the Trustee shall
authenticate and deliver, in the name of the designated transferee or
transferees, one or more new Securities of any authorized denominations and of a
like aggregate principal amount and bearing such restrictive legends as may be
required by this Indenture.


                                      -11-
<PAGE>   18

       Securities may be exchanged for a like aggregate principal amount of
Securities of other authorized denominations. Securities to be exchanged shall
be surrendered at any office or agency to be maintained by the Company
designated as Registrar or co-registrar pursuant to Section 2.03 and the Company
shall execute and register and the Trustee shall authenticate and deliver in
exchange therefor the Security or Securities which the Securityholder making the
exchange shall be entitled to receive, bearing registration numbers not
contemporaneously outstanding.

       All Securities presented for registration of transfer or for exchange
into like Securities, purchase, redemption or conversion into Common Stock or
payment shall (if so required by the Company, the Trustee, the Registrar or any
co-registrar) be duly endorsed by, or be accompanied by a written instrument or
instruments of transfer in form satisfactory to the Company and the Trustee,
duly executed by the Holder or such Holder's attorney duly authorized in
writing.

       No service charge shall be charged to the Securityholder for any exchange
for like Securities or registration of transfer of Securities, but the Company
may require payment of a sum sufficient to cover any tax, assessments or other
governmental charges that may be imposed in connection therewith.

       None of the Company, the Trustee, the Registrar or any co-registrar shall
be required to exchange for like Securities or register a transfer of (a) any
Securities for a period of 15 days next preceding any selection of Securities to
be redeemed, or (b) any Securities or portions thereof selected or called for
redemption, or (c) any Securities or portion thereof surrendered for conversion
into Common Stock, or (d) any Securities or portion thereof surrendered for
purchase or redemption (and not withdrawn) pursuant to Sections 3.08 or 3.09,
respectively.

       All Securities issued upon any transfer or exchange for like Securities
shall be valid obligations of the Company, evidencing the same debt, and
entitled to the same benefits under this Indenture as the Securities surrendered
upon such exchange or transfer.

       (b) So long as the Securities are eligible for book-entry settlement with
the Depositary (as defined below), or unless otherwise required by law, all
Securities that are so eligible may be represented by a Security in global form
registered in the name of the Depositary or the nominee of the Depositary,
except as otherwise specified below. The transfer and exchange of beneficial
interests in such Security in global form shall be effected through the
Depositary in accordance with this Indenture and the procedures of the
Depositary therefor.

       Securities that upon initial issuance are beneficially owned by QIBs or
Persons that are not U.S. Persons will be represented by one or more Securities
in global form. Transfers of interests in a Security in global form will be made
in accordance with the standing instructions and procedures of the Depository
and its participants. The Trustee shall make appropriate endorsements to reflect
increases or decreases in the Principal Amounts of such Securities in global
form as set forth on the face of the Security to reflect any such transfers.


                                      -12-
<PAGE>   19

       Except as provided below, beneficial owners of a Security in global form
shall not be entitled to have certificates registered in their names, will not
receive or be entitled to receive physical delivery of certificates in
definitive form and will not be considered Holders of such Securities in global
form.

       (c) So long as the Securities are eligible for book-entry settlement, or
unless otherwise required by law, upon any transfer of a definitive Security to
a QIB in accordance with Rule 144A or to a Person who is not a U.S. Person, and
upon receipt of the definitive Security or Securities being so transferred,
together with a certification, substantially in the form of the reverse of the
Security, from the transferor that the transfer is being made in compliance with
Rule 144A or to a Person who is not a U.S. Person, as the case may be (or other
evidence satisfactory to the Trustee), the Trustee shall make an endorsement on
the Security in global form to reflect an increase in the aggregate Principal
Amount of the Securities represented by the Security in global form, the Trustee
shall cancel such Security or Securities in certificated form in accordance with
the standing instructions and procedures of the Depositary and the aggregate
principal amount of Securities represented by the Security in global form to be
increased accordingly; provided that no definitive Security, or portion thereof,
in respect of which the Company or an Affiliate of the Company held any
beneficial interest shall be included in such Security in global form until such
definitive Security is freely tradable in accordance with Rule 144(k); provided
further that the Trustee shall issue Securities in definitive form upon any
transfer of a beneficial interest in any Security in global form to the Company
or any Affiliate of the Company.

       Any Security in global form may be endorsed with or have incorporated in
the text thereof such legends or recitals or changes not inconsistent with the
provisions of this Indenture as may be required by the Custodian, the
Depositary, by the NYSE or by the National Association of Securities Dealers,
Inc. in order for the Securities to be tradeable on The Portal Market or as may
be required for the Securities to be tradeable on any other market developed for
trading of securities pursuant to Rule 144A or required to comply with any
applicable law or any regulation thereunder or with the rules and regulations of
any securities exchange upon which the Securities may be listed or traded or to
conform with any usage with respect thereto, or to indicate any special
limitations or restrictions to which any particular Securities are subject.

       (d) Every Security that bears or is required under this Section 2.06(d)
to bear the legend set forth in this Section 2.06(d) (together with any Common
Stock issued upon conversion of the Securities and required to bear the legend
set forth in Section 2.06(e), collectively, the "Restricted Securities") shall
be subject to the restrictions on transfer set forth in this Section 2.06(d)
(including those set forth in the legend set forth below) unless such
restrictions on transfer shall be waived by written consent of the Company, and
the holder of each such Restricted Security, by such Securityholder's acceptance
thereof, agrees to be bound by all such restrictions on transfer. As used in
Sections 2.06(d) and 2.06(e), the term "transfer" encompasses any sale, pledge,
transfer or other disposition whatsoever of any Restricted Security.

       Until the expiration of the holding period applicable to sales thereof
under Rule 144(k) under the Securities Act (or any successor provision), any
certificate evidencing such Security (and all


                                      -13-
<PAGE>   20

securities issued in exchange therefor or substitution thereof, other than
Common Stock, if any, issued upon conversion therefor, which shall bear the
legend set forth in Section 2.06(e), if applicable) shall bear a legend in
substantially the following form, unless such Security has been sold pursuant to
a registration statement that has been declared effective under the Securities
Act (and which continues to be effective at the time of such transfer), or
unless otherwise agreed by the Company in writing, with written notice thereof
to the Trustee:

             THE SECURITY EVIDENCED HEREBY HAS NOT BEEN REGISTERED UNDER THE
             UNITED STATES SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES
             ACT"), OR ANY STATE SECURITIES LAWS, AND, ACCORDINGLY, MAY NOT BE
             OFFERED OR SOLD WITHIN THE UNITED STATES OR TO, OR FOR THE ACCOUNT
             OR BENEFIT OF, U.S. PERSONS EXCEPT AS SET FORTH IN THE FOLLOWING
             SENTENCE. BY ITS ACQUISITION HEREOF, THE HOLDER (1) REPRESENTS THAT
             (A) IT IS A "QUALIFIED INSTITUTIONAL BUYER" (AS DEFINED IN RULE
             144A UNDER THE SECURITIES ACT) OR (B) IT IS NOT A U.S. PERSON AND
             IS ACQUIRING THE SECURITY EVIDENCED HEREBY IN AN OFFSHORE
             TRANSACTION; (2) AGREES THAT IT WILL NOT, PRIOR TO EXPIRATION OF
             THE HOLDING PERIOD APPLICABLE TO SALES OF THE SECURITY EVIDENCED
             HEREBY UNDER RULE 144(K) UNDER THE SECURITIES ACT (OR ANY SUCCESSOR
             PROVISION), RESELL OR OTHERWISE TRANSFER THE SECURITY EVIDENCED
             HEREBY OR THE COMMON STOCK ISSUABLE UPON CONVERSION OF SUCH
             SECURITY WITHIN THE UNITED STATES OR TO, OR FOR THE ACCOUNT OR
             BENEFIT OF, U.S. PERSONS EXCEPT (A) TO NETWORKS ASSOCIATES, INC. OR
             ANY SUBSIDIARY THEREOF, (B) TO A QUALIFIED INSTITUTIONAL BUYER IN
             COMPLIANCE WITH RULE 144A UNDER THE SECURITIES ACT, (C) PURSUANT TO
             THE EXEMPTION FROM REGISTRATION PROVIDED BY RULE 144 UNDER THE
             SECURITIES ACT (IF AVAILABLE) OR (D) PURSUANT TO A REGISTRATION
             STATEMENT WHICH HAS BEEN DECLARED EFFECTIVE UNDER THE SECURITIES
             ACT (AND WHICH CONTINUES TO BE EFFECTIVE AT THE TIME OF SUCH
             TRANSFER); (3) PRIOR TO SUCH TRANSFER (OTHER THAN A TRANSFER
             PURSUANT TO CLAUSE 2(D) ABOVE), IT WILL FURNISH TO STATE STREET
             BANK AND TRUST COMPANY OF CALIFORNIA, N.A., AS TRUSTEE (OR A
             SUCCESSOR TRUSTEE, AS APPLICABLE), SUCH CERTIFICATIONS, LEGAL
             OPINIONS OR OTHER INFORMATION AS THE TRUSTEE MAY REASONABLY REQUIRE
             TO CONFIRM THAT SUCH TRANSFER IS BEING MADE PURSUANT TO AN
             EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE
             REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND (4) AGREES THAT
             IT WILL DELIVER TO EACH PERSON TO WHOM THE SECURITY EVIDENCED
             HEREBY IS TRANSFERRED A NOTICE SUBSTANTIALLY TO THE EFFECT OF THIS
             LEGEND. IN CONNECTION WITH ANY


                                      -14-
<PAGE>   21

             TRANSFER OF THE SECURITY EVIDENCED HEREBY PRIOR TO THE EXPIRATION
             OF THE HOLDING PERIOD APPLICABLE TO SALES OF THE SECURITY EVIDENCED
             HEREBY UNDER RULE 144(K) UNDER THE SECURITIES ACT (OR ANY SUCCESSOR
             PROVISION), THE HOLDER MUST CHECK THE APPROPRIATE BOX SET FORTH ON
             THE REVERSE HEREOF RELATING TO THE MANNER OF SUCH TRANSFER AND
             SUBMIT THIS CERTIFICATE TO STATE STREET BANK AND TRUST COMPANY OF
             CALIFORNIA, N.A., AS TRUSTEE (OR A SUCCESSOR TRUSTEE, AS
             APPLICABLE). IF THE PROPOSED TRANSFEREE IS A PURCHASER WHO IS NOT A
             U.S. PERSON, THE HOLDER MUST, PRIOR TO SUCH TRANSFER, FURNISH TO
             STATE STREET BANK AND TRUST COMPANY OF CALIFORNIA, N.A., AS TRUSTEE
             (OR A SUCCESSOR TRUSTEE, AS APPLICABLE), SUCH CERTIFICATIONS, LEGAL
             OPINIONS OR OTHER INFORMATION AS IT MAY REASONABLY REQUIRE TO
             CONFIRM THAT SUCH TRANSFER IS BEING MADE PURSUANT TO AN EXEMPTION
             FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION
             REQUIREMENTS OF THE SECURITIES ACT. THIS LEGEND WILL BE REMOVED
             UPON THE EARLIER OF THE TRANSFER OF THE SECURITY EVIDENCED HEREBY
             PURSUANT TO CLAUSE 2(D) ABOVE OR UPON ANY TRANSFER OF THE SECURITY
             EVIDENCED HEREBY UNDER RULE 144(K) UNDER THE SECURITIES ACT (OR ANY
             SUCCESSOR PROVISION).

       Any Security (or security issued in exchange or substitution therefor) as
to which such restrictions on transfer shall have expired in accordance with
their terms or as to the conditions for removal of the foregoing legend set
forth therein have been satisfied may, upon surrender of such Securities for
exchange to the Registrar in accordance with the provisions of this Section
2.06, be exchanged for a new Security or Securities, of like tenor and aggregate
principal amount, which shall not bear the restrictive legend required by this
Section 2.06(d).

       Notwithstanding any other provisions of this Indenture (other than the
provisions set forth in this Section 2.06(d)), a Security in global form may not
be transferred as a whole except by the Depositary to a nominee of the
Depositary or by a nominee of the Depositary to the Depositary or another
nominee to a successor Depositary or a nominee of such successor Depositary.

       The Depositary shall be a clearing agency registered under the Exchange
Act. The Company initially appoints The Depository Trust Company to act as
Depositary with respect to the Securities in global form. Initially, a Security
in global form shall be issued to the Depositary, registered in the name of Cede
& Co., as the nominee of the Depositary, and deposited with the Custodian for
Cede & Co.

       If at any time the Depositary for the Security in global form notifies
the Company that it is unwilling or unable to continue as Depositary for such
Security, the Company may appoint a successor Depositary with respect to such
Security. If a successor Depositary for the Security is


                                      -15-
<PAGE>   22

not appointed by the Company within 90 days after the Company receives such
notice, the Company will execute, and the Trustee, upon receipt of an Officers'
Certificate for authentication and delivery of Securities, will authenticate and
deliver, Securities in certificated form, in an aggregate principal amount equal
to the principal amount of the Security in global form, in exchange for such
Security in global form.

       Securities in certificated form issued in exchange for all or a part of a
Security in global form pursuant to this Section 2.06 shall be registered in
such names and in such authorized denominations as the Depositary, pursuant to
instructions from its direct or indirect participants or otherwise, shall
instruct the Trustee. Upon execution and authentication, the Trustee shall
deliver such Securities in certificated form to the Persons in whose names such
Securities in certificated form are so registered.

       At such time as all interests in a Security in global form have been
redeemed, converted, exchanged, repurchased or canceled for Securities in
certificated form, or transferred to a transferee who receives Securities in
certificated form, such Security in global form shall be, upon receipt thereof,
canceled by the Trustee in accordance with standing procedures and instructions
existing between the Custodian and Depositary. At any time prior to such
cancellation, if any interest in a Security in global form is exchanged for
Securities in certificated form, redeemed, converted, exchanged, repurchased by
the Company pursuant to Article 3 or canceled, or transferred for part of a
Security in global form, the principal amount of such Security in global form
shall, in accordance with the standing procedures and instructions existing
between the Custodian and the Depositary, be reduced or increased, as the case
may be, and an endorsement shall be made on such Security in global form, by the
Trustee or the Custodian, at the direction of the Trustee, to reflect such
reduction or increase.

       (e) Until the expiration of the holding period applicable to sales
thereof under Rule 144(k) under the Securities Act (or any successor provision),
any stock certificate representing Common Stock issued upon conversion of a
Security shall bear a legend in substantially the following form, unless such
Common Stock has been sold pursuant to a registration statement that has been
declared effective under the Securities Act (and which continues to be effective
at the time of such transfer) or such Common Stock has been issued upon
conversion of Securities that have been transferred pursuant to a registration
statement that has been declared effective under the Securities Act, or unless
otherwise agreed by the Company in writing with written notice thereof to the
transfer agent for the Common Stock:

             THE COMMON STOCK EVIDENCED HEREBY HAS NOT BEEN REGISTERED UNDER THE
             U.S. SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT") OR
             ANY STATE SECURITIES LAWS, AND, ACCOR DINGLY, MAY NOT BE OFFERED OR
             SOLD WITHIN THE UNITED STATES OR TO, OR FOR ACCOUNT OR BENEFIT OF,
             U.S. PERSONS EXCEPT AS SET FORTH IN THE FOLLOWING SENTENCE. THE
             HOLDER HEREOF AGREES THAT UNTIL THE EXPIRATION OF THE HOLDING
             PERIOD APPLICABLE TO SALES OF THE SECURITY EVIDENCED HEREBY UNDER
             RULE 144(K)


                                      -16-
<PAGE>   23

             UNDER THE SECURITIES ACT (OR ANY SUCCESSOR PROVISION), (1) IT WILL
             NOT RESELL OR OTHERWISE TRANSFER THE COMMON STOCK EVIDENCED HEREBY
             WITHIN THE UNITED STATES OR TO, OR FOR THE ACCOUNT OR BENEFIT OF,
             U.S. PERSONS EXCEPT (A) TO NETWORKS ASSOCIATES, INC. OR ANY
             SUBSIDIARY THEREOF, (B) TO A "QUALIFIED INSTITUTIONAL BUYER" (AS
             DEFINED IN RULE 144A UNDER THE SECURITIES ACT) IN COMPLIANCE WITH
             RULE 144A, (C) PURSUANT TO THE EXEMPTION FROM REGISTRATION PROVIDED
             BY RULE 144 UNDER THE SECURITIES ACT (IF AVAILABLE), OR (D)
             PURSUANT TO A REGISTRATION STATEMENT WHICH HAS BEEN DECLARED
             EFFECTIVE UNDER THE SECURITIES ACT (AND WHICH CONTINUES TO BE
             EFFECTIVE AT THE TIME OF SUCH TRANSFER); (2) PRIOR TO SUCH TRANSFER
             (OTHER THAN A TRANSFER PURSUANT TO CLAUSE 1(D) ABOVE), IT WILL
             FURNISH TO BOSTON EQUISERVE, AS TRANSFER AGENT (OR A SUCCESSOR
             TRANSFER AGENT, AS APPLICABLE), SUCH CERTIFICATIONS, LEGAL OPINIONS
             OR OTHER INFORMATION AS THE TRANSFER AGENT MAY REASONABLE REQUIRE
             TO CONFIRM THAT SUCH TRANSFER IS BEING MADE PURSUANT TO AN
             EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE
             REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND (3) IT WILL
             DELIVER TO EACH PERSON TO WHOM THE SECURITY EVIDENCED HEREBY IS
             TRANSFERRED (OTHER THAN A TRANSFER PURSUANT TO CLAUSE 1(D) ABOVE) A
             NOTICE SUBSTANTIALLY TO THE EFFECT OF THIS LEGEND. THIS LEGEND WILL
             BE REMOVED UPON THE EARLIER OF THE TRANSFER OF THE COMMON STOCK
             EVIDENCED HEREBY PURSUANT TO CLAUSE 1(D) ABOVE OR UPON ANY TRANSFER
             OF THE COMMON STOCK EVIDENCED HEREBY AFTER THE EXPIRATION OF THE
             HOLDING PERIOD APPLICABLE TO SALES OF THE SECURITY EVIDENCED HEREBY
             UNDER RULE 144(K) UNDER THE SECURITIES ACT (OR ANY SUCCESSOR
             PROVISION).

       Any such Common Stock as to which such restrictions on transfer shall
have expired in accordance with their terms or as to which the conditions for
removal of the foregoing legend set forth therein have been satisfied may, upon
surrender of the certificates representing such shares of Common Stock for
exchange in accordance with the procedures of the transfer agent for the Common
Stock, be exchanged for a new certificate or certificates for a like number of
shares of Common Stock, which shall not bear the restrictive legend required by
this Section 2.06(e).

       (f) Any Security or Common Stock issued upon the conversion or exchange
of a Security that, prior to the expiration of the holding period applicable to
sales thereof under Rule 144(k) under the Securities Act (or any successor
provision), is purchased or owned by the Company or any Affiliate thereof may
not be resold by the Company or such Affiliate unless registered under the
Securities Act or resold pursuant to an exemption from the registration
requirements of the Securities Act in a transaction which results in such
Securities or Common Stock, as the case may be, no longer being "restricted
securities" (as defined under Rule 144).


                                      -17-
<PAGE>   24

       SECTION 2.07. REPLACEMENT SECURITIES. If (a) any mutilated Security is
surrendered to the Trustee, or (b) the Company and the Trustee receive evidence
to their satisfaction of the destruction, loss or theft of any Security, and
there is delivered to the Company and the Trustee such security or indemnity as
may be required by them to save each of them harmless, then, in the absence of
notice to the Company or the Trustee that such Security has been acquired by a
bona fide purchaser, the Company shall execute and, upon its written request,
the Trustee shall authenticate and deliver, in exchange for any such mutilated
Security or in lieu of any such destroyed, lost or stolen Security, a new
Security of like tenor and Principal Amount, bearing a number not
contemporaneously outstanding.

       In case any such mutilated, destroyed, lost or stolen Security has become
or is about to become due and payable, or is about to be purchased or redeemed
by the Company pursuant to Article 3 hereof, the Company in its discretion may,
instead of issuing a new Security, pay, purchase or redeem such Security, as the
case may be.

       Upon the issuance of any new Securities under this Section 2.07, the
Company may require the payment of a sum sufficient to cover any tax or other
governmental charge that may be imposed in relation thereto and any other
expenses (including the fees and expenses of the Trustee) connected therewith.

       Every new Security issued pursuant to this Section 2.07 in lieu of any
mutilated, destroyed, lost or stolen Security shall constitute an original
additional contractual obligation of the Company, whether or not the destroyed,
lost or stolen Security shall be at any time enforceable by anyone, and shall be
entitled to all benefits of this Indenture equally and proportionately with any
and all other Securities duly issued hereunder.

       The provisions of this Section 2.07 are exclusive and shall preclude (to
the extent lawful) all other rights and remedies with respect to the replacement
or payment of mutilated, destroyed, lost or stolen Securities.

       SECTION 2.08. OUTSTANDING SECURITIES; DETERMINATIONS OF HOLDERS' ACTION.
Securities outstanding at any time are all the Securities authenticated by the
Trustee except for those canceled by it, those delivered to it for cancellation
and those described in this Section 2.08 as not outstanding. A Security does not
cease to be outstanding because the Company or an Affiliate thereof holds the
Security; provided, however, that in determining whether the Holders of the
requisite Principal Amount of Securities have given or concurred in any request,
demand, authorization, direction, notice, consent or waiver hereunder,
Securities owned by the Company or any Affiliate of the Company shall be
disregarded and deemed not to be outstanding, except that, in determining
whether the Trustee shall be protected in relying upon any such request, demand,
authorization, direction, notice, consent or waiver, only Securities which the
Trustee knows to be so owned shall be so disregarded. Subject to the foregoing,
only Securities outstanding at the time of such determination shall be
considered in any such determination (including, without limitation,
determinations pursuant to Articles 6 and 9).


                                      -18-
<PAGE>   25

       If a Security is replaced pursuant to Section 2.07, it ceases to be
outstanding unless the Trustee receives proof satisfactory to it that the
replaced Security is held by a bona fide purchaser.

       If the Paying Agent holds, in accordance with this Indenture, on a
Redemption Date, or on the Business Day following a Purchase Date or a
Fundamental Change Redemption Date, or on Stated Maturity, money or securities,
if permitted hereunder, sufficient to pay Securities payable on that date, then
on and after that date such Securities shall cease to be outstanding and
Original Issue Discount and interest, if any, on such Securities shall cease to
accrue; provided, that if such Securities are to be redeemed, notice of such
redemption has been duly given pursuant to this Indenture or provision therefor
satisfactory to the Trustee has been made.

       If a Security is converted in accordance with Article 11, then from and
after such conversion such Security shall cease to be outstanding and Original
Issue Discount and interest, if any, shall cease to accrue on such Security.

       SECTION 2.09. TEMPORARY SECURITIES. Pending the preparation of definitive
Securities, the Company may execute, and upon Company Order the Trustee shall
authenticate and deliver, temporary Securities which are printed, lithographed,
typewritten, mimeographed or otherwise produced, in any authorized denomination,
substantially of the tenor of the definitive Securities in lieu of which they
are issued and with such appropriate insertions, omissions, substitutions and
other variations as the officers executing such Securities may determine, as
conclusively evidenced by their execution of such Securities.

       If temporary Securities are issued, the Company will cause definitive
Securities to be prepared without unreasonable delay. After the preparation of
definitive Securities, the temporary Securities shall be exchangeable for
definitive Securities upon surrender of the temporary Securities at the office
or agency of the Company designated for such purpose pursuant to Section 2.03,
without charge to the Holder. Upon surrender for cancellation of any one or more
temporary Securities the Company shall execute and the Trustee shall
authenticate and deliver in exchange therefor a like Principal Amount of
definitive Securities of authorized denominations. Until so exchanged the
temporary Securities shall in all respects be entitled to the same benefits
under this Indenture as definitive Securities.

       SECTION 2.10. CANCELLATION. All Securities surrendered for payment,
purchase by the Company pursuant to Article 3, conversion, redemption or
registration of transfer or exchange for the Securities shall, if surrendered to
any Person other than the Trustee, be delivered to the Trustee and shall be
promptly canceled by it. The Company may at any time deliver to the Trustee for
cancellation any Securities previously authenticated and delivered hereunder
which the Company may have acquired in any manner whatsoever, and all Securities
so delivered shall be promptly canceled by the Trustee. The Company may not
issue new Securities to replace Securities it has paid for or delivered to the
Trustee for cancellation or that any Holder has converted pursuant to Article
11. No Securities shall be authenticated in lieu of or in exchange for any
Securities canceled as provided in this Section 2.10, except as expressly
permitted by this Indenture. All canceled Securities held by the Trustee shall
be destroyed by the Trustee and, following such


                                      -19-
<PAGE>   26

destruction, the Trustee shall deliver a certificate of destruction to the
Company, unless the Company directs by the Company Order that the Trustee
deliver canceled Securities to the Company.

       SECTION 2.11. PERSONS DEEMED OWNERS. Prior to due presentment of a
Security for registration of transfer, the Company, the Trustee and any agent of
the Company or the Trustee may treat the Person in whose name such Security is
registered as the owner of such Security for the purpose of receiving payment of
Principal Amount, Issue Price, accrued Original Issue Discount, accrued
Liquidated Damages, if any, Redemption Price, Purchase Price, Fundamental Change
Redemption Price and interest, if any, in respect thereof, for the purpose of
conversion and for all other purposes whatsoever, whether or not such Security
be overdue, and none of the Company, the Trustee or any agent of the Company or
the Trustee shall be affected by notice to the contrary.

                                    ARTICLE 3

                            REDEMPTION AND PURCHASES

       SECTION 3.01. RIGHT TO REDEEM; NOTICES TO TRUSTEE. The Company, at its
option, may redeem the Securities in accordance with the provisions of
paragraphs 5 and 7 of the Securities. If the Company elects to redeem Securities
pursuant to paragraph 5 of the Securities, it shall notify the Trustee in
writing of the Redemption Date, the Principal Amount of Securities to be
redeemed and the Redemption Price.

       The Company shall give the notice to the Trustee provided for in this
Section 3.01 (i) in the case of any redemption of fewer than all of the
Securities, at least 45 days before the Redemption Date and (ii) in the case of
a redemption of all of the Securities, no later than the date that the Company
is required to give notice to the Holders pursuant to Section 3.03, in each case
unless a shorter notice shall be satisfactory to the Trustee.

       SECTION 3.02. SELECTION OF SECURITIES TO BE REDEEMED. If less than all
the Securities held in definitive form are to be redeemed, the Trustee shall
select the definitive Securities to be redeemed pro rata or by lot or by a
method the Trustee considers fair and appropriate (as long as such method is not
prohibited by the rules of any stock exchange on which the Securities are then
listed). The Trustee shall make the selection at least 35 days, but not more
than 60 days, before the Redemption Date from outstanding definitive Securities
not previously called for redemption. The Trustee may select for redemption
portions of the Principal of Securities that have denominations larger than
$1,000. Securities and portions of them the Trustee selects shall be in
Principal Amounts of $1,000 or a multiple of $1,000. Provisions of this
Indenture that apply to definitive Securities called for redemption also apply
to portions of definitive Securities called for redemption. The Trustee shall
notify the Company promptly of the definitive Securities or portions of
definitive Securities to be redeemed.


                                      -20-
<PAGE>   27

       Any interest in a Security held in global form by and registered in the
name of the Depositary or its nominee to be redeemed in whole or in part will be
redeemed in accordance with the procedures of the Depositary.

       If any Security selected for partial redemption is converted in part
before termination of the conversion right with respect to the portion of the
Security so selected, the converted portion of such Security shall be deemed (so
far as may be) to be the portion selected for redemption. Securities which have
been converted during a selection of Securities to be redeemed may be treated by
the Trustee as outstanding for the purpose of such selection.

       SECTION 3.03. NOTICE OF REDEMPTION. At least 30 days but not more than 60
days before a Redemption Date, the Company shall mail a notice of redemption by
first-class mail, postage prepaid, to each Holder of Securities to be redeemed.

       The notice shall identify the Securities to be redeemed and shall state:

       (1) the Redemption Date;

       (2) the Redemption Price;

       (3) the Conversion Rate;

       (4) the name and address of the Paying Agent and Conversion Agent;

       (5) that Securities called for redemption may be converted at any time
before the close of business on the last Trading Day prior to the Redemption
Date;

       (6) that Holders who want to convert Securities must satisfy the
requirements set forth in paragraph 9 of the Securities;

       (7) that Securities called for redemption must be surrendered to the
Paying Agent to collect the Redemption Price;

       (8) if fewer than all the outstanding Securities are to be redeemed, the
certificate number and Principal Amounts of the particular Securities to be
redeemed;

       (9) that Original Issue Discount on Securities called for redemption will
cease to accrue on and after the Redemption Date; and

       (10) the CUSIP number or numbers for the Securities.

       The notice if mailed in the manner herein provided shall be conclusively
presumed to have been duly given, whether or not the Holder receives such
notice. In any case, failure to give such notice by mail or any defect in the
notice to the Holder of any Security designated for redemption


                                      -21-
<PAGE>   28

as a whole or in part shall not affect the validity of the proceedings for the
redemption of any other Security.

       At the Company's request, the Trustee shall give the notice of redemption
in the Company's name and at the Company's expense.

       SECTION 3.04. EFFECT OF NOTICE OF REDEMPTION. Once notice of redemption
is given, Securities called for redemption become due and payable on the
Redemption Date and at the Redemption Price stated in the notice except for
Securities which are converted in accordance with the terms of this Indenture.

       Upon the later of the Redemption Date or the date such Securities are
surrendered to the Paying Agent, such Securities shall be paid at the Redemption
Price stated in the notice.

       SECTION 3.05. DEPOSIT OF REDEMPTION PRICE. Prior to or on the Redemption
Date, the Company shall deposit with the Paying Agent (or if the Company or an
Affiliate of the Company is the Paying Agent, shall segregate and hold in trust)
money sufficient to pay the Redemption Price of all Securities to be redeemed on
that date other than Securities or portions of Securities called for redemption
which prior thereto have been delivered by the Company to the Trustee for
cancellation or have been converted for Common Stock, and on or after the
Redemption Date (unless the Company shall default in the payment of the
Securities at the Redemption Price, together with Original Issue Discount
accrued to, but excluding, the Redemption Date), Original Issue Discount on the
Securities or portion of Securities called for redemption shall cease to accrue
and such Securities shall cease after the close of business on the Business Day
immediately preceding the Redemption Date to be convertible into Common Stock
and, except as provided in Section 8.02, to be entitled to any benefit or
security under this Indenture, and the Holders thereof shall have no right in
respect of such Securities except the right to receive the Redemption Price
thereof and unpaid interest to, but excluding, the Redemption Date. The Paying
Agent shall as promptly as practicable return to the Company any money, with
interest, if any, thereon not required for that purpose because of conversion of
Securities. If such money is then held by the Company in trust and is not
required for such purpose it shall be discharged from such trust.

       SECTION 3.06. SECURITIES REDEEMED IN PART. Upon surrender of a Security
that is redeemed in part, the Company shall execute and the Trustee shall
authenticate and deliver to the Holder a new Security in an authorized
denomination equal in Principal Amount to the unredeemed portion of the Security
surrendered.

       SECTION 3.07. CONVERSION ARRANGEMENT ON CALL FOR REDEMPTION. In
connection with any redemption of Securities, the Company may arrange for the
purchase and conversion for Common Stock of any Securities called for redemption
by an agreement with one or more investment bankers or other purchasers to
purchase such Securities by paying to the Paying Agent in trust for the Holders,
on or before the close of business on the Redemption Date, an amount that,
together with any amounts deposited with the Paying Agent by the Company for the
redemption of the Securities, is not less than the Redemption Price, including
interest, if any, to the Redemption


                                      -22-
<PAGE>   29

Date, of such Securities. Notwithstanding anything to the contrary contained in
this Article 3, the obligation of the Company to pay the Redemption Price of
such Securities, including all accrued Original Issue Discount, shall be deemed
to be satisfied and discharged to the extent such amount is so paid by such
purchasers. If such an agreement is entered into, any Securities not duly
surrendered for conversion by the Holders thereof may, at the option of the
Company, be deemed, to the fullest extent permitted by law, acquired by such
purchasers from such Holders and (notwithstanding anything to the contrary
contained in Article 11) surrendered by such purchasers for conversion, all
immediately prior to the close of business on the Redemption Date, subject to
payment of the above amount as aforesaid. The Paying Agent shall hold and pay to
the Holders whose Securities are selected for redemption any such amount paid to
it in the same manner as it would money deposited with it by the Company for the
redemption of Securities. Without the Paying Agent's prior written consent, no
arrangement between the Company and such purchasers for the purchase and
conversion of any Securities shall increase or otherwise affect any of the
powers, duties, responsibilities or obligations of the Paying Agent as set forth
in this Indenture, and the Company agrees to indemnify the Paying Agent from,
and hold it harmless against, any loss, liability or expense arising out of or
in connection with any such arrangement for the purchase and conversion of any
Securities between the Company and such purchasers, including the costs and
expenses incurred by the Paying Agent in the defense of any claim or liability
arising out of or in connection with the exercise or performance of any of its
powers, duties, responsibilities or obligations under this Indenture.

       SECTION 3.08. PURCHASE OF SECURITIES AT OPTION OF THE HOLDER.

       (a) General. Securities shall be purchased by the Company pursuant to
paragraph 6 of the Securities as of February 13, 2003, February 13, 2008 and
February 13, 2013 (each, a "Purchase Date"), at the purchase price specified
therein (each, a "Purchase Price") at the option of the Holder thereof, upon:

       (1) delivery to the Paying Agent by the Holder of a written notice of
purchase (a "Purchase Notice") at any time from the opening of business on the
date that is 20 Business Days prior to a Purchase Date until the close of
business on such Purchase Date, stating:

             (A) the certificate number of the Security which the Holder will
deliver to be purchased;

             (B) the portion of the Principal Amount of the Security which the
Holder will deliver to be purchased, which portion must be $1,000 in Principal
Amount or a multiple thereof;

             (C) that such Security shall be purchased as of the Purchase Date
pursuant to the terms and conditions specified in paragraph 6 of the Securities
and in this Indenture; and

             (D) if the Company elects, pursuant to a Company Notice, to pay the
Purchase Price to be paid as of such Purchase Date, in whole or in part, in
Common Stock but such portion of the Purchase Price shall ultimately be payable
to such Holder in Cash because any of the conditions to the payment of the
Purchase Price in Common Stock are not satisfied prior to or on the Purchase


                                      -23-
<PAGE>   30

Date, as set forth in Section 3.08(d), whether such Holder elects (x) to
withdraw such Purchase Notice as to some or all of the Securities to which such
Purchase Notice relates (stating the Principal Amount and certificate numbers of
the Securities as to which such withdrawal shall relate), or (y) to receive Cash
in respect of the entire Purchase Price for all Securities (or portions thereof)
to which such Purchase Notice relates; and

       (2) delivery of such Security to the Paying Agent prior to, on or after
the Purchase Date (together with all necessary endorsements) at the offices of
the Paying Agent, such delivery being a condition to receipt by the Holder of
the Purchase Price therefor; provided, however, that such Purchase Price shall
be so paid pursuant to this Section 3.08 only if the Security so delivered to
the Paying Agent shall conform in all respects to the description thereof in the
related Purchase Notice.

       If a Holder, in such Holder's Purchase Notice (and in any written notice
of withdrawal of a portion of such Holder's Securities previously submitted for
purchase pursuant to a Purchase Notice, the portion that remains subject to the
Purchase Notice), fails to indicate such Holder's choice with respect to the
election set forth in clause (D) of Section 3.08(a)(1), such Holder shall be
deemed to have elected to receive Cash in respect of the entire Purchase Price
for all Securities subject to such Purchase Notice in the circumstances set
forth in such clause (D).

       The Company shall purchase from the Holder thereof, pursuant to this
Section 3.08, a portion of a Security if the Principal Amount of such portion is
$1,000 or a multiple of $1,000. Provisions of this Indenture that apply to the
purchase of all of a Security also apply to the purchase of such portion of such
Security.

       Any purchase by the Company contemplated pursuant to the provisions of
this Section 3.08 shall be consummated by the delivery of the consideration to
be received by the Holder promptly following the later of the Purchase Date and
the time of delivery of the Security.

       Notwithstanding anything herein to the contrary, any Holder delivering to
the Paying Agent the Purchase Notice contemplated by this Section 3.08(a) shall
have the right at any time prior to the close of business on the Purchase Date
to withdraw such Purchase Notice by delivery of a written notice of withdrawal
to the Paying Agent in accordance with Section 3.10.

       The Paying Agent shall promptly notify the Company of the receipt by it
of any Purchase Notice or written notice of withdrawal thereof.

       (b) Company's Right to Elect Manner of Payment of Purchase Price. The
Company may elect with respect to any Purchase Date to pay the Purchase Price in
respect of the Securities to be purchased pursuant to Section 3.08(a) as of such
Purchase Date, in U.S. legal tender ("Cash") or Common Stock, or in any
combination of Cash and Common Stock, subject to the conditions set forth in
Sections 3.08(c) and (d). The Company shall designate, in the Company Notice
delivered pursuant to Section 3.08(e), whether the Company will purchase the
Securities for Cash or Common Stock, or, if a combination thereof, the
percentages of the Purchase Price of Securities in respect of which it will pay
in Cash and/or Common Stock; provided that the Company will pay


                                      -24-
<PAGE>   31

Cash for fractional interests in Common Stock. For purposes of determining the
existence of potential fractional interests, all Securities subject to purchase
by the Company held by a Holder shall be considered together (no matter how many
separate certificates are to be presented). Each Holder whose Securities are
purchased pursuant to this Section 3.08 shall receive the same percentage of
Cash and/or Common Stock in payment of the Purchase Price for such Securities,
except (i) as provided in Section 3.08(d) with regard to the payment of Cash in
lieu of fractional interests in Common Stock and (ii) in the event that the
Company is unable to purchase the Securities of a Holder or Holders for Common
Stock because any necessary qualifications or registrations of the Common Stock
under applicable federal or state securities laws cannot be obtained, the
Company may purchase the Securities of such Holder or Holders for Cash. The
Company may not change its election with respect to the consideration (or
components or percentages of components thereof) to be paid once the Company has
given its Company Notice to Holders except pursuant to this Section 3.08(b) or
Section 3.08(d).

       At least two Business Days before the Company Notice Date (as defined in
Section 3.08(c)), the Company shall deliver an Officers' Certificate to the
Trustee specifying:

                (i) the manner of payment selected by the Company,

                (ii) the information required by Section 3.08(e),

                (iii) if the Company elects to pay the Purchase Price, or a
specified percentage thereof, in Common Stock, that the conditions to such
manner of payment set forth in Section 3.08(d) have been or will be complied
with, and

                (iv) whether the Company desires the Trustee to give the Company
Notice required by Section 3.08(e).

       (c) Purchase with Cash. At the option of the Company, the Purchase Price
of Securities in respect of which a Purchase Notice pursuant to Section 3.08(a)
has been given, or a specified percentage thereof, may be paid by the Company
with Cash equal to the aggregate Purchase Price, or such specified percentage
thereof, as the case may be, of such Securities. If the Company elects to
purchase Securities with Cash, a Company Notice as provided in Section 3.08(e)
shall be sent to Holders (and to beneficial owners as required by applicable
law) not less than 20 Business Days prior to the Purchase Date (the "Company
Notice Date").

       (d) Payment by Issuance of Common Stock. At the option of the Company,
the Purchase Price of Securities in respect of which a Purchase Notice pursuant
to Section 3.08(a) has been given, or a specified percentage thereof, may be
paid by the Company by the issuance of a number of shares of Common Stock equal
to the quotient obtained by dividing (i) the amount of Cash to which the Holders
would have been entitled had the Company elected to pay all or such specified
percentage, as the case may be, of the Purchase Price of such Securities in Cash
by (ii) the Market Price of a share of Common Stock, subject to the next
succeeding paragraph.


                                      -25-
<PAGE>   32

       The Company will not issue a fractional share of Common Stock in payment
of the Purchase Price. Instead the Company will pay Cash for the current market
value of the fractional share. The current market value of a fraction of a share
shall be determined by multiplying the Market Price by such fraction and
rounding the product to the nearest whole cent. It is understood that if a
Holder elects to have more than one Security purchased, the number of shares of
Common Stock shall be based on the aggregate amount of Securities to be
purchased.

       If the Company elects to purchase the Securities by the issuance of
shares of Common Stock, a Company Notice as provided in Section 3.08(e) shall be
sent to the Holders (and to beneficial owners as required by applicable law) not
later than the Company Notice Date.

       The Company's right to exercise its election to purchase the Securities
pursuant to Section 3.08 through the issuance of shares of Common Stock shall be
conditioned upon:

             (i) the Company having given timely Company Notice of election to
purchase all or a specified percentage of the Securities with Common Stock as
provided herein;

             (ii) the registration of the shares of Common Stock to be issued in
respect of the payment of the specified percentage of the Purchase Price under
the Securities Act; unless the shares of Common Stock so issued can be freely
resold by the Securityholder (unless such Securityholder is the Company or an
Affiliate of the Company) receiving such shares without registration under the
Securities Act;

             (iii) any necessary qualification or registration under applicable
state securities laws or the availability of an exemption from such
qualification and registration; and

             (iv) the receipt by the Trustee of an Officers' Certificate and an
Opinion of Counsel each stating that (A) the terms of the issuance of the Common
Stock are in conformity with this Indenture and (B) the shares of Common Stock
to be issued by the Company in payment of the specified percentage of the
Purchase Price in respect of Securities have been duly authorized and, when
issued and delivered pursuant to the terms of this Indenture in payment of the
specified percentage of the Purchase Price in respect of Securities, will be
validly issued, fully paid and nonassessable, and, in the case of such Officers'
Certificate, stating that conditions (i), (ii) and (iii) above have been
satisfied and, in the case of such Opinion of Counsel, stating that conditions
(ii) and (iii) above have been satisfied.

Such Officers' Certificate shall also set forth the number of shares of Common
Stock to be issued for each $1,000 Principal Amount of Securities and the Sale
Price of a share of Common Stock on each Trading Day during the period during
which the Market Price is calculated and ending on the Purchase Date. The
Company may elect to pay the Purchase Price (or any portion thereof) in Common
Stock only if the information necessary to calculate the Market Price is
reported in a daily newspaper of national circulation. If such conditions are
not satisfied with respect to a Holder or Holders prior to or on the Purchase
Date and the Company elected to purchase the Securities to be purchased as of
such Purchase Date pursuant to this Section 3.08 through the


                                      -26-
<PAGE>   33

issuance of shares of Common Stock, the Company shall pay the entire Purchase
Price in respect of such Securities of such Holder or Holders in Cash.

       The "Market Price" means the average of the Sale Prices of the Common
Stock for the five Trading Day period ending on (if the third Business Day prior
to the applicable Purchase Date is a Trading Day or, if not, then on the last
Trading Day prior to) the third Business Day prior to the applicable Purchase
Date, appropriately adjusted to take into account the occurrence, during the
period commencing on the first of such Trading Days during such five Trading Day
period and ending on such Purchase Date, of any event described in Section
11.06, 11.07 or 11.08; subject, however, to the conditions set forth in Sections
11.09 and 11.10. The "Sale Price" of the Common Stock on any date means the
closing per share sale price (or if no closing sale price is reported the
average of the bid and ask prices or, if more than one, in either case, the
average of the average bid and average ask prices) on such date as reported in
the composite transactions for the principal United States securities exchange
on which the Common Stock is traded or, if the Common Stock is not listed on a
United States national or regional stock exchange, as reported by the Nasdaq
National Market.

       (e) Notice of Election. Company's notices of election to purchase with
Cash or Common Stock, or any combination thereof, shall be sent to the Holders
(and to beneficial owners as required by applicable law) in the manner provided
in Section 12.02 at the time specified in Section 3.08(c) or (d), as applicable
(each, a "Company Notice"). Such Company Notices shall state the manner of
payment elected and shall contain the following information:

       In the event the Company has elected to pay a Purchase Price (or a
specified percentage thereof) with Common Stock, the Company Notice shall:

             (1) state that each Holder will receive Common Stock with a Market
Price determined as of a specified date prior to the Purchase Date equal to such
specified percentage of the Purchase Price of the Securities held by such Holder
(except any Cash amount to be paid in lieu of fractional share); and

             (2) set forth the method of calculating the Market Price and state
that because the Market Price of Common Stock will be determined prior to the
Purchase Date, the Holders will bear the market risk with respect to the value
of the Common Stock to be received from the date such Market Price is determined
to the Purchase Date.

       In any case, each Company Notice shall include a form of Purchase Notice
to be completed by a Securityholder and shall state:

                (i) the Purchase Price and Conversion Rate;

                (ii) the name and address of the Paying Agent and the Conversion
Agent;


                                      -27-
<PAGE>   34

                (iii) that Securities as to which a Purchase Notice has been
given may be converted only if the applicable Purchase Notice has been withdrawn
in accordance with the terms of this Indenture;

                (iv) that Securities must be surrendered to the Paying Agent to
collect payment;

                (v) that the Purchase Price for any Security as to which a
Purchase Notice has been given and not withdrawn will be paid promptly following
the later of the Purchase Date and the time of surrender of such Security as
described in (iv);

                (vi) the procedures the Holder must follow to exercise rights
under Section 3.08 and a brief description of those rights;

                (vii) briefly, the conversion rights of the Securities; and

                (viii) the procedures for withdrawing a Purchase Notice
(including, without limitation, for a conditional withdrawal pursuant to the
terms of Section 3.08(a)(1)(D) or Section 3.10).

       At the Company's request, the Trustee shall give the Company Notice in
the Company's name and at the Company's expense; provided, however, that, in all
cases, the text of the Company Notice shall be prepared by the Company.

       (f) Covenants of the Company. All shares of Common Stock delivered upon
conversion or purchase of the Securities shall be newly issued shares or
treasury shares, shall be fully paid and nonassessable and shall be free from
preemptive rights and free of any lien or adverse claim.

       The Company shall use its best efforts to list or cause to have quoted
all such shares of Common Stock on each United States national securities
exchange or over-the-counter or other domestic market on which the Common Stock
is then listed or quoted.

       (g) Procedure upon Purchase. On the Business Day following the Purchase
Date, the Company shall deposit with the Paying Agent Cash (in respect of a Cash
purchase under Section 3.08(c) or for fractional interests, as applicable), or
shares of Common Stock, or a combination thereof, as applicable, sufficient to
pay the aggregate Purchase Price of the Securities to be purchased pursuant to
this Section 3.08. As soon as practicable after the Purchase Date, the Company
shall deliver to each Holder entitled to receive Common Stock, through the
Paying Agent, a certificate for the number of full shares of Common Stock, as
applicable, issuable in payment of such Purchase Price and Cash in lieu of any
fractional interests. The Person in whose name the certificate for Common Stock
is registered shall be treated as a holder of record following the Purchase
Date. Subject to Section 3.08(d), no payment or adjustment will be made for
dividends on the Common Stock the record date for which occurred on or prior to
the Purchase Date.


                                      -28-
<PAGE>   35

       (h) Taxes. If a Holder is paid in Common Stock, the Company shall pay any
documentary, stamp or similar issue or transfer tax due on such issue of shares
of Common Stock. However, the Holder shall pay any such tax which is due because
the Holder requests the shares of Common Stock to be issued in a name other than
the Holder's name. The Paying Agent may refuse to deliver the certificates
representing the Common Stock being issued in a name other than the Holder's
name until the Paying Agent receives a sum sufficient to pay any tax which will
be due because the shares of Common Stock are to be issued in a name other than
the Holder's name. Nothing herein shall preclude any income tax withholding
required by law or regulations.

       SECTION 3.09. REDEMPTION AT OPTION OF THE HOLDER UPON A FUNDAMENTAL
CHANGE.

       (a) If a Fundamental Change shall occur at any time prior to February 13,
2018, each Holder of Securities shall have the right, at such Holder's option,
to require the Company to redeem such Holder's Securities on the date (the
"Fundamental Change Repurchase Date") (or if such date is not a Business Day,
the next succeeding Business Day) that is 45 days after the date of the
Company's notice of such Fundamental Change. The Securities will be redeemable
in part in multiples of $1,000 of Principal Amount. The Company shall redeem
such Securities at a price (the "Fundamental Change Redemption Price") equal to
the Issue Price plus accrued Original Issue Discount to the date of redemption;
provided that, with respect to a Fundamental Change, if the Applicable Price is
less than the Reference Market Price, the Company shall redeem such Securities
at a price equal to the foregoing Redemption Price multiplied by the fraction
obtained by dividing the Applicable Price by the Reference Market Price. No
Securities may be redeemed at the option of the Holders as a result of a
Fundamental Change if there has occurred and is continuing an Event of Default
(other than a default in the payment of the Fundamental Change Redemption Price
with respect to such Securities).

       (b) The Company, or at its request (which must be received by the Trustee
at least three Business Days prior to the date the Trustee is requested to give
such notice as described below) the Trustee in the name of and at the expense of
the Company, shall mail to all Holders of record of the Securities a notice (a
"Fundamental Change Redemption Notice") of the occurrence of a Fundamental
Change and of the redemption right arising as a result thereof on or before the
tenth day after the occurrence of such Fundamental Change. The Company shall
promptly furnish the Trustee a copy of such notice.

       (c) For a Security to be so redeemed at the option of the Holder, the
Paying Agent must receive such Security with the form entitled "Option to Elect
Redemption Upon a Fundamental Change" on the reverse thereof duly completed,
together with such Security duly endorsed for transfer, on or before the 30th
day after the date of such notice (or if such 30th day is not a Business Day,
the immediately preceding Business Day). All questions as to the validity,
eligibility (including time of receipt) and acceptance of any Security for
redemption shall be determined by the Company, whose determination shall be
final and binding.

       SECTION 3.10. EFFECT OF PURCHASE NOTICE OR FUNDAMENTAL CHANGE REDEMPTION
NOTICE. Upon receipt by the Company of the Purchase Notice or Fundamental Change
Redemption Notice


                                      -29-
<PAGE>   36

specified in Section 3.08(a) or Section 3.09(b), as applicable, the Holder of
the Security in respect of which such Purchase Notice or Fundamental Change
Redemption Notice, as the case may be, was given shall (unless such Purchase
Notice or Fundamental Change Redemption Notice is withdrawn as specified in the
following two paragraphs) thereafter be entitled to receive solely the Purchase
Price or Fundamental Change Redemption Price, as the case may be, with respect
to such Security. Such Purchase Price or Fundamental Change Redemption Price
shall be paid to such Holder promptly following the later of (x) the Purchase
Date or the Fundamental Change Redemption Date, as the case may be, with respect
to such Security (provided the conditions in Section 3.08(a) or Section 3.09(c),
as applicable, have been satisfied) and (y) the time of delivery of such
Security to the Paying Agent by the Holder thereof in the manner required by
Section 3.08(a) or Section 3.09(c), as applicable. Securities in respect of
which a Purchase Notice or Fundamental Change Redemption Notice, as the case may
be, has been given by the Holder thereof may not be converted for shares of
Common Stock on or after the date of the delivery of such Purchase Notice (or
Fundamental Change Redemption Notice, as the case may be), unless such Purchase
Notice (or Fundamental Change Redemption Notice, as the case may be) has first
been validly withdrawn as specified in the following two paragraphs.

       A Purchase Notice or Fundamental Change Redemption Notice, as the case
may be, may be withdrawn by means of a written notice of withdrawal delivered to
the office of the Paying Agent at any time prior to the close of business on the
Purchase Date or the Fundamental Change Redemption Date, as the case may be, to
which it relates specifying:

       (1) the certificate number of the Security in respect of which such
notice of withdrawal is being submitted,

       (2) the Principal Amount of the Security with respect to which such
notice of withdrawal is being submitted, and

       (3) the Principal Amount, if any, of such Security which remains subject
to the original Purchase Notice or Fundamental Change Redemption Notice, as the
case may be, and which has been or will be delivered for purchase by the
Company.

       A written notice of withdrawal of a Purchase Notice may be in the form of
(i) a conditional withdrawal contained in a Purchase Notice pursuant to the
terms of Section 3.08(a)(1)(D) or (ii) a conditional withdrawal containing the
information set forth in Section 3.08(a)(1)(D) and the preceding paragraph and
contained in a written notice of withdrawal delivered to the Paying Agent as set
forth in the preceding paragraph.

       There shall be no purchase of any Securities pursuant to Section 3.08
(other than through the issuance of Common Stock in payment of the Purchase
Price, including Cash in lieu of any fractional shares) or redemption pursuant
to Section 3.09 if there has occurred (prior to, on or after, as the case may
be, the giving, by the Holders of such Securities, of the required Purchase
Notice or Fundamental Change Redemption Notice, as the case may be) and is
continuing an Event of


                                      -30-
<PAGE>   37

Default (other than a default in the payment of the Purchase Price or
Fundamental Change Redemption Price, as the case may be, with respect to such
Securities).

       SECTION 3.11. DEPOSIT OF PURCHASE PRICE OR FUNDAMENTAL CHANGE REDEMPTION
PRICE. On or before the Business Day following a Purchase Date or a Fundamental
Change Redemption Date, as the case may be, the Company shall deposit with the
Trustee or with the Paying Agent (or, if the Company or an Affiliate of the
Company is acting as the Paying Agent, shall segregate and hold in trust as
provided in Section 2.04) an amount of money and/or securities, if permitted
hereunder, sufficient to pay the aggregate Purchase Price or Fundamental Change
Redemption Price, as the case may be, of all the Securities or portions thereof
which are to be purchased as of such Purchase Date or Fundamental Change
Redemption Date, as the case may be.

       SECTION 3.12. SECURITIES PURCHASED IN PART. Any Security that is to be
purchased, or redeemed upon a Fundamental Change, only in part shall be
surrendered at the office of the Paying Agent (with, if the Company or the
Trustee so requires, due endorsement by, or a written instrument of transfer in
form satisfactory to the Company and the Trustee duly executed by, the Holder
thereof or such Holder's attorney duly authorized in writing) and the Company
shall execute and the Trustee shall authenticate and deliver to the Holder of
such Security, without service charge, a new Security or Securities, of any
authorized denomination as requested by such Holder in aggregate Principal
Amount equal to, and in exchange for, the portion of the Principal Amount of the
Security so surrendered which is not purchased or redeemed.

       SECTION 3.13. COVENANT TO COMPLY WITH SECURITIES LAWS UPON PURCHASE OF
SECURITIES. In connection with any purchase or redemption of Securities under
Section 3.08 or 3.09 hereof, the Company shall (i) comply with Rule 13e-4 (which
term, as used herein, includes any successor provision thereto) under the
Exchange Act, if applicable, (ii) file the related Schedule 13E-4 (or any
successor schedule, form or report) under the Exchange Act, if applicable, and
(iii) otherwise comply with all Federal and state securities laws so as to
permit the rights and obligations under Section 3.08 and 3.09 to be exercised in
the time and in the manner specified in Section 3.08 and 3.09.

       SECTION 3.14. REPAYMENT TO THE COMPANY. The Trustee and the Paying Agent
shall return to the Company any cash or shares of Common Stock that remain
unclaimed as provided in para graph 14 of the Securities, together with interest
or dividends, if any, thereon, held by them for the payment of a Purchase Price
or Fundamental Change Redemption Price, as the case may be; provided, however,
that to the extent that the aggregate amount of cash or shares of Common Stock
deposited by the Company pursuant to Section 3.11 exceeds the aggregate Purchase
Price or Fundamental Change Redemption Price, as the case may be, of the
Securities or portions thereof which the Company is obligated to purchase as of
the Purchase Date or Fundamental Change Redemption Date, as the case may be,
then promptly after the Business Day following the Purchase Date or Fundamental
Change Redemption Date, as the case may be, the Trustee and the Paying Agent
shall return any such excess to the Company together with interest or dividends,
if any, thereon.


                                      -31-
<PAGE>   38

                                    ARTICLE 4

                                    COVENANTS

       SECTION 4.01. PAYMENT OF SECURITIES. The Company shall promptly make all
payments in respect of the Securities on the dates and in the manner provided in
the Securities or pursuant to this Indenture. Principal Amount, Issue Price,
accrued Original Issue Discount, accrued Liquidated Damages, if any, Redemption
Price, Purchase Price, Fundamental Change Redemption Price and interest, if any,
shall be considered paid on the applicable date due or, in the case of a
Purchase Price or Fundamental Change Redemption Price, on the Business Day
following the applicable Purchase Date or Fundamental Change Redemption Date, as
the case may be, if on such date the Trustee or the Paying Agent holds, in
accordance with this Indenture, money or securities, if permitted hereunder,
sufficient to pay all such amount then due.

       The Company shall pay interest on overdue amounts at the rate set forth
in paragraph 1 of the Securities and it shall pay interest on overdue interest
at the same rate compounded semiannually (to the extent that the payment of such
interest shall be legally enforceable), which interest on overdue interest shall
accrue from the date such amounts became overdue and shall be in lieu of, and
not in addition to, the continued accrual of Original Issue Discount.

       SECTION 4.02. FINANCIAL INFORMATION; SEC REPORTS. The Company will
deliver to the Trustee (a) as soon as available and in any event within 90 days
after the end of each fiscal year of the Company (i) a consolidated balance
sheet of the Company and its Subsidiaries as of the end of such fiscal year and
the related consolidated statements of operations, stockholders' equity and cash
flows for such fiscal year, all reported on by an independent public accountant
of nationally recognized standing and (ii) a report containing a management's
discussion and analysis of the financial condition and results of operations and
a description of the business and properties of the Company and (b) as soon as
available and in any event within 45 days after the end of each of the first
three quarters of each fiscal year of the Company (i) an unaudited consolidated
financial report for such quarter and (ii) a report containing a management's
discussion and analysis of the financial condition and results of operations of
the Company; provided that the foregoing shall not be required for any fiscal
year or quarter, as the case may be, with respect to which the Company files or
expects to file with the Trustee an annual report or quarterly report, as the
case may be, pursuant to the third paragraph of this Section 4.02.

       So long as the Securities or the Common Stock issued upon conversion of
the Securities are Restricted Securities, if the Company is not subject to
either Section 13 or 15(d) of the Exchange Act, the Company shall at the request
of any Holder (or holders of Common Stock issued upon conversion of the
Securities) provide to such Holder (or holders of such Common Stock) and any
prospective purchaser designated by such Holders (or holders of such Common
Stock), as the case may be, such information, if any, required by Rule
144A(d)(4) under the Securities Act.

       The Company shall file with the Trustee, within 15 days after it files
such annual and quarterly reports, information, documents and other reports with
the SEC, copies of its annual report and of


                                      -32-
<PAGE>   39

the information, documents and other reports (or copies of such portions of any
of the foregoing as the SEC may by rules and regulations prescribe) which the
Company is required to file with the SEC pursuant to Section 13 or 15(d) of the
Exchange Act.

       SECTION 4.03. COMPLIANCE CERTIFICATE. The Company shall deliver to the
Trustee, within 120 days after the end of each fiscal year of the Company, an
Officers' Certificate in which one of the two Officers signing such certificate
is either the principal executive officer, principal financial officer or
principal accounting officer of the Company, stating whether or not to the best
knowledge of the signers thereof a Default exists (without regard to any period
of grace or requirement of notice provided hereunder) and, if a Default exists,
specifying all such Defaults and the nature and status thereof of which the
signers may have knowledge.

       The Company will deliver to the Trustee, forthwith upon becoming aware of
any Default or any Event of Default, an Officers' Certificate specifying with
particularity such Default or Event of Default and further stating what action
the Company has taken, is taking or proposes to take with respect thereto.

       Any notice required to be given under this Section 4.03 shall be
delivered to the Trustee at its Corporate Trust Office.

       SECTION 4.04. FURTHER INSTRUMENTS AND ACTS. Upon request of the Trustee,
the Company will execute and deliver such further instruments and do such
further acts as may be reasonably necessary or proper to carry out more
effectively the purposes of this Indenture.

       SECTION 4.05. MAINTENANCE OF OFFICE OR AGENCY. The Company will maintain
in the Borough of Manhattan, The City of New York, an office or agency where
Securities may be presented or surrendered for payment, where Securities may be
surrendered for registration of transfer, exchange, purchase, redemption or
conversion and where notices and demands to or upon the Company in respect of
the Securities and this Indenture may be served. The office or agency of State
Street Bank and Trust Company, N.A., an Affiliate of the Trustee located at 61
Broadway, Concourse Level, Corporate Trust Window, New York, New York 10006
(Attention: Networks Associates, Inc., Zero Coupon Convertible Subordinated
Debentures due 2018) shall be such office or agency for all of the aforesaid
purposes unless the Company shall maintain some other office or agency for such
purposes and shall give prompt written notice to the Trustee of the location,
and any change in the location, of such other office or agency. If at any time
the Company shall fail to maintain any such required office or agency or shall
fail to furnish the Trustee with the address thereof, such presentations,
surrenders, notices and demands may be made or served at the Corporate Trust
Office.

       The Company may also from time to time designate one or more other
offices or agencies where the Securities may be presented or surrendered for any
or all such purposes and may from time to time rescind such designations;
provided, however, that no such designation or rescission shall in any manner
relieve the Company of its obligation to maintain an office or agency in the
Borough of Manhattan, The City of New York, for such purposes.


                                      -33-
<PAGE>   40

       SECTION 4.06. EXISTENCE. Subject to Article 5, the Company will do or
cause to be done all things necessary to preserve and keep in full force and
effect its existence and rights (charter and statutory); provided, however, that
the Company shall not be required to preserve any such right if the Company
shall determine that the preservation thereof is no longer desirable in the
conduct of the business of the Company and that the loss thereof is not
disadvantageous in any material respect to the Holders.

       SECTION 4.07. MAINTENANCE OF PROPERTIES. The Company will cause all
properties used or useful in the conduct of its business or the business of any
Significant Subsidiary to be maintained and kept in good condition, repair and
working order and supplied with all necessary equipment and will cause to be
made all necessary repairs, renewals, replacements, betterments and improvements
thereof, all as in the judgment of the Company may be necessary so that the
business carried on in connection therewith may be properly and advantageously
conducted at all times; provided, however, that nothing in this Section 4.07
shall prevent the Company from discontinuing the operation or maintenance of any
of such properties if such discontinuance is, in the judgment of the Company,
desirable in the conduct of its business or the business of any Significant
Subsidiary and not disadvantageous in any material respect to the Holders.

       SECTION 4.08. PAYMENT OF TAXES AND OTHER CLAIMS. The Company will pay or
discharge, or cause to be paid or discharged, before the same may become
delinquent, (i) all taxes, assessments and governmental charges levied or
imposed upon the Company or any Significant Subsidiary or upon the income,
profits or property, of the Company or any Significant Subsidiary, (ii) all
claims for labor, materials and supplies which, if unpaid, might by law become a
lien or charge upon the property of the Company or any Significant Subsidiary,
and (iii) all stamps and other duties, if any, which may be imposed by the
United States or any political subdivision thereof or therein in connection with
the issuance, transfer, exchange or conversion of any Securities or with respect
to this Indenture; provided however, that, in the case of clauses (i) and (ii),
the Company shall not be required to pay or discharge or cause to be paid or
discharged any such tax, assessment, charge or claim (A) if the failure to do so
will not, in the aggregate, have a material adverse impact on the Company, or
(B) if the amount applicability or validity is being contested in good faith by
appropriate proceedings.

                                    ARTICLE 5

                              SUCCESSOR CORPORATION

       SECTION 5.01. WHEN THE COMPANY MAY MERGE OR TRANSFER ASSETS.

       The Company shall not consolidate with or merge with or into any other
Person (other than in a merger or consolidation in which the Company is the
surviving Person) or convey, transfer or lease its properties and assets
substantially as an entirety to any Person, unless:


                                      -34-
<PAGE>   41

             (i) the Person (if other than the Company) formed by such
consolidation or into which the Company is merged or the Person which acquires
by conveyance, transfer or lease the properties and assets of the Company
substantially as an entirety shall be a corporation, limited liability company,
partnership or trust organized and validly existing under the laws of the United
States or any State thereof or the District of Columbia, and shall expressly
assume by an indenture supplemental hereto, executed and delivered to the
Trustee in form satisfactory to the Trustee, the due and punctual payment of the
Principal Amount, Issue Price, accrued Original Issue Discount, accrued
Liquidated Damages, if any, Redemption Price, Purchase Price, Fundamental Change
Redemption Price or interest, if any, on the Securities, according to their
tenor, and the due and punctual performance of all of the covenants and
obligations of the Company under the Securities and this Indenture, and shall
have provided for conversion rights in accordance with the Indenture;

             (ii) immediately after giving effect to such transaction, no
Default or Event of Default shall have occurred and be continuing; and

             (iii) the Company shall have delivered to the Trustee an Officers'
Certificate and an Opinion of Counsel, each stating that such consolidation,
merger, conveyance, transfer or lease and, if a supplemental indenture is
required in connection with such transaction, such supplemental indenture,
comply with this Article 5 and that all conditions precedent herein provided for
relating to such transaction have been satisfied.

       The successor Person formed by such consolidation or into which the
Company is merged or the successor Person to which such conveyance, transfer or
lease is made shall succeed to, and be substituted for, and may exercise every
right and power of, the Company under this Indenture with the same effect as if
such successor had been named as the Company herein; and thereafter, except in
the case of a lease, the Company shall be discharged from all obligations and
covenants under this Indenture and the Securities.

                                    ARTICLE 6

                              DEFAULTS AND REMEDIES

       SECTION 6.01. EVENTS OF DEFAULT. An "Event of Default" occurs if:

             (1) the Company defaults in the payment of the Principal Amount,
Issue Price, accrued Original Issue Discount, accrued Liquidated Damages, if
any, Redemption Price, Purchase Price or Fundamental Change Redemption Price on
any Security when the same becomes due and payable at its Stated Maturity, upon
redemption, upon declaration, when due for purchase by the Company or otherwise
(provided that in the case of a default in the payment of Liquidated Damages,
such default in payment of Liquidated Damages continues for a period of 30
days), whether or not such payment shall be prohibited by Article 10;


                                      -35-
<PAGE>   42

             (2) the Company fails to comply with any of its agreements or
covenants in the Securities or this Indenture (other than those referred to in
clause (1) above) and such failure continues for 60 days after receipt by the
Company of a Notice of Default;

             (3) a decree or order by a court having jurisdiction in the
premises shall have been entered adjudging the Company a bankrupt or insolvent,
or approving as properly filed a petition seeking reorganization of the Company
under any Bankruptcy Law, and such decree or order shall have continued
undischarged and unstayed for a period of 60 consecutive days; or a decree or
order of a court having jurisdiction in the premises of the appointment of a
receiver or liquidator or trustee or assignee in bankruptcy or insolvency of the
Company or of its property, or for the winding-up or liquidation of its affairs,
shall have been entered, and such decree or order shall have remained in force
undischarged and unstayed of a period of 60 consecutive days; or

             (4) the Company shall institute proceedings to be adjudicated a
voluntary bankrupt, or shall consent to the filing of a bankruptcy proceeding
against it, or shall file a petition or answer or consent seeking reorganization
under any Bankruptcy Law, or shall consent to the filing of any such petition,
or shall consent to the appointment of a receiver or liquidator or trustee or
assignee in bankruptcy or insolvency of it or of its property or shall make an
assignment for the benefit of creditors, or shall admit in writing its inability
to pay its debts generally as they become due.

       "Bankruptcy Law" means Title 11, United States Code, or any similar
Federal or state law for the relief of debtors.

       A Default under clause (2) above is not an Event of Default until the
Trustee notifies the Company, or the Holders of at least 25% in aggregate
Principal Amount of the Securities at the time outstanding notify the Company
and the Trustee, of the Default and the Company does not cure such Default (and
such Default is not waived) within the time specified in clause (2) above after
actual receipt of such notice (a "Notice of Default"). Any such notice must
specify the Default, demand that it be remedied and state that such notice is a
Notice of Default.

       SECTION 6.02. ACCELERATION. If an Event of Default (other than an Event
of Default specified in Section 6.01(3) or (4)) occurs and is continuing, the
Trustee by notice to the Company, or the Holders of at least 25% in aggregate
Principal Amount of the Securities at the time outstanding by notice to the
Company and the Trustee, may declare the Issue Price and accrued Original Issue
Discount to the date of declaration on all the Securities to be immediately due
and payable. Upon such a declaration, such Issue Price and accrued Original
Issue Discount shall be due and payable immediately. If an Event of Default
specified in Section 6.01(3) or (4) occurs and is continuing, the Issue Price
and accrued Original Issue Discount on all the Securities shall become and be
immediately due and payable without any declaration or other act on the part of
the Trustee or any Holders. The Holders of a majority in aggregate Principal
Amount of the Securities at the time outstanding, by notice to the Company and
the Trustee (and without notice to any other Securityholder), may rescind an
acceleration and its consequences if the rescission would not conflict with any
judgment or decree and if all existing Events of Default have been cured or
waived except nonpayment of the Issue Price and accrued Original Issue Discount
that have


                                      -36-
<PAGE>   43

become due solely as a result of acceleration and if all amounts due to the
Trustee under Section 7.07 have been paid. No such rescission shall affect any
subsequent Default or Event of Default or impair any right consequent thereto.

       SECTION 6.03. OTHER REMEDIES. If an Event of Default occurs and is
continuing, the Trustee may pursue any available remedy to collect the payment
of the Issue Price and accrued Original Issue Discount on the Securities or to
enforce the performance of any provision of the Securities or this Indenture.

       The Trustee may maintain a proceeding even if the Trustee does not
possess any of the Securities or does not produce any of the Securities in the
proceeding. A delay or omission by the Trustee or any Securityholder in
exercising any right or remedy accruing upon an Event of Default shall not
impair the right or remedy or constitute a waiver of, or acquiescence in, the
Event of Default. No remedy is exclusive of any other remedy. All available
remedies are cumulative.

       SECTION 6.04. WAIVER OF PAST DEFAULTS. The Holders of a majority in
aggregate Principal Amount of the Securities at the time outstanding, by notice
to the Company and the Trustee (and without notice to any other Securityholder),
may waive an existing Default or Event of Default and its consequences except
(1) an Event of Default described in Section 6.01(l), (2) a Default in respect
of a provision that under Section 9.02 cannot be amended without the consent of
each Securityholder affected or (3) a Default that constitutes a failure to
convert any Security in accordance with the terms of Article 11. When a Default
or Event of Default is waived, it is deemed cured, but no such waiver shall
extend to any subsequent or other Default or Event of Default or impair any
consequent right.

       SECTION 6.05. CONTROL BY MAJORITY. The Holders of a majority in aggregate
Principal Amount of the Securities at the time outstanding may direct the time,
method and place of conducting any proceeding for any remedy available to the
Trustee or of exercising any trust or power conferred on the Trustee. However,
the Trustee may refuse to follow any direction that conflicts with law or this
Indenture or that the Trustee determines in good faith is unduly prejudicial to
the rights of other Holders or would involve the Trustee in personal liability
unless the Trustee is offered indemnity satisfactory to it.

       SECTION 6.06. LIMITATION ON SUITS. A Securityholder may not pursue any
remedy with respect to this Indenture or the Securities unless:

             (1) the Holder gives to the Company and the Trustee written notice
stating that an Event of Default is continuing;

             (2) the Holders of at least 25% in aggregate Principal Amount of
the Securities at the time outstanding make a written request to the Trustee to
pursue the remedy;

             (3) such Holder or Holders offer to the Trustee reasonable security
or indemnity against any loss, liability or expense satisfactory to the Trustee;


                                      -37-
<PAGE>   44

             (4) the Trustee does not comply with the request within 60 days
after receipt of the notice, the request and the offer of security or indemnity;
and

             (5) the Holders of a majority in aggregate Principal Amount of the
Securities at the time outstanding do not give the Trustee a direction
inconsistent with the request during such 60 day period.

       A Securityholder may not use this Indenture to prejudice the rights of
any other Securityholder or to obtain a preference or priority over any other
Securityholder.

       SECTION 6.07. RIGHTS OF HOLDERS TO RECEIVE PAYMENT. Notwithstanding any
other provision of this Indenture, but subject to Article 10, the right of any
Holder to receive payment of the Principal Amount, Issue Price, accrued Original
Issue Discount, Redemption Price, Purchase Price, Fundamental Change Redemption
Price or interest, if any, in respect of the Securities held by such Holder, on
or after the respective due dates expressed in the Securities or any Redemption
Date and to convert the Securities in accordance with Article 11, or to bring
suit for the enforcement of any such payment on or after such respective dates
or the right to convert, shall not be impaired or affected adversely without the
consent of each such Holder.

       SECTION 6.08. COLLECTION SUIT BY TRUSTEE. If an Event of Default
described in Section 6.01(1) occurs and is continuing, the Trustee may recover
judgment in its own name and as trustee of an express trust against the Company
for the whole amount owing with respect to the Securities and the amounts
provided for in Section 7.07.

       SECTION 6.09. TRUSTEE MAY FILE PROOFS OF CLAIM. In case of the pendency
of any receivership, insolvency, liquidation, bankruptcy, reorganization,
arrangement, adjustment, composition or other judicial proceeding relative to
the Company or any other obligor upon the Securities or the property of the
Company or of such other obligor or their creditors, the Trustee (irrespective
of whether the Principal Amount, Issue Price, accrued Original Issue Discount,
accrued Liquidated Damages, if any, Redemption Price, Purchase Price,
Fundamental Change Redemption Price or interest, if any, in respect of the
Securities shall then be due and payable as therein expressed or by declaration
or otherwise and irrespective of whether the Trustee shall have made any demand
on the Company for the payment of any such amount) shall be entitled and
empowered, by intervention in such proceeding or otherwise,

             (a) to file and prove a claim for the whole amount of the Principal
Amount, Issue Price, accrued Original Issue Discount, accrued Liquidated
Damages, if any, Redemption Price, Purchase Price, Fundamental Change Redemption
Price or interest, if any, and to file such other papers or documents as may be
necessary or advisable in order to have the claims of the Trustee (including any
claim for the reasonable compensation, expenses, disbursements and advances of
the Trustee, its agents and counsel) and of the Holders allowed in such judicial
proceeding, and

             (b) to collect and receive any moneys or other property payable or
deliverable on any such claims and to distribute the same;


                                      -38-
<PAGE>   45

and any custodian, receiver, assignee, trustee, liquidator, sequestrator or
similar official in any such judicial proceeding is hereby authorized by each
Holder to make such payments to the Trustee and, in the event that the Trustee
shall consent to the making of such payments directly to the Holders, to pay the
Trustee any amount due it for the reasonable compensation, expenses,
disbursements and advances of the Trustee, its agents and counsel, and any other
amounts due the Trustee under Section 7.07.

       Nothing herein contained shall be deemed to authorize the Trustee to
authorize or consent to or accept or adopt on behalf of any Holder any plan of
reorganization, arrangement, adjustment or composition affecting the Securities
or the rights of any Holder thereof, or to authorize the Trustee to vote in
respect of the claims of any Holder in any such proceeding.

       SECTION 6.10. PRIORITIES. If the Trustee collects any money pursuant to
this Article 6, it shall pay out the money in the following order:

       First: to the Trustee for amounts due under Section 7.07;

       Second: to holders of Senior Indebtedness to the extent required by
Article 10;

       Third: to Holders for amounts due and unpaid on the Securities for the
Principal Amount, Issue Price, accrued Original Issue Discount, accrued
Liquidated Damages, if any, Redemption Price, Purchase Price, Fundamental Change
Redemption Price or interest, if any, as the case may be, ratably, without
preference or priority of any kind, according to such amounts due and payable on
the Securities; and

       Fourth: the balance, if any, to the Company.

       The Trustee may fix a record date and payment date for any payment to
Holders pursuant to this Section 6.10. At least 15 days before such record date,
the Company shall mail to each Securityholder and the Trustee a notice that
states the record date, the payment date and amount to be paid.

       SECTION 6.11. UNDERTAKING FOR COSTS. In any suit for the enforcement of
any right or remedy under this Indenture or in any suit against the Trustee for
any action taken or omitted by it as Trustee, a court in its discretion may
require the filing by any party litigant (other than the Trustee) in the suit of
an undertaking to pay the costs of the suit, and the court in its discretion may
assess reasonable costs, including reasonable attorneys' fees, against any party
litigant in the suit, having due regard to the merits and good faith of the
claims or defenses made by the party litigant. This Section 6.11 does not apply
to a suit by the Trustee, any suit by a Holder for the enforcement of the
payment of the Principal Amount, Issue Price, accrued Original Issue Discount,
Redemption Price, Purchase Price, Fundamental Change Redemption Price or
interest, if any, on or after the due date expressed in such Security or to any
suit for the enforcement of the right to convert the security pursuant to
Article 11, or a suit by Holders of more than 10% in aggregate Principal Amount
of the Securities at the time outstanding.


                                      -39-
<PAGE>   46



       SECTION 6.12. WAIVER OF STAY, EXTENSION OR USURY LAWS. The Company
covenants (to the extent that it may lawfully do so) that it will not at any
time insist upon, or plead, or in any manner whatsoever claim or take the
benefit or advantage of, any stay or extension law or any usury or other law
wherever enacted, now or at any time hereafter in force, which would prohibit or
forgive the Company from paying all or any portion of the Principal Amount,
Issue Price, accrued Original Issue Discount, accrued Liquidated Damages, if
any, Redemption Price, Purchase Price or Fundamental Change Redemption Price in
respect of Securities, or any interest on any such amounts, as contemplated
herein, or which may affect the covenants or the performance of this Indenture;
and the Company (to the extent that it may lawfully do so) hereby expressly
waives all benefit or advantage of any such laws and covenants that it will not
hinder, delay or impede the execution of any power herein granted to the
Trustee, but will suffer and permit the execution of every such power as though
no such law had been enacted.


                                    ARTICLE 7

                                     TRUSTEE

        SECTION 7.01. DUTIES OF TRUSTEE.

             (a) If an Event of Default has occurred and is continuing, the
Trustee shall exercise the rights and powers vested in it by this Indenture and
use the same degree of care and skill in its exercise as a prudent person would
exercise or use under the circumstances in the conduct of his or her own
affairs.

             (b) Except during the continuance of an Event of Default:

                              (1) the Trustee need perform only those duties
that are specifically set forth in this Indenture and no others; and

                              (2) in the absence of bad faith on its part, the
Trustee may conclusively rely, as to the truth of the statements and the
correctness of the opinions expressed therein, upon certificates or opinions
furnished to the Trustee and conforming to the requirements of this Indenture.
However, the Trustee shall examine the certificates and opinions to determine
whether or not they conform to the requirements of this Indenture.

This Section 7.01(b) shall be in lieu of Section 315(a) of the TIA and such
Section 315(a) is hereby expressly excluded from this Indenture, as permitted by
the TIA.

             (c) The Trustee may not be relieved from liability for its own
negligent action, its own negligent failure to act or its own willful
misconduct, except that:

                              (1) this paragraph (c) does not limit the effect
of paragraph (b) of this Section 7.01;


                                      -40-

<PAGE>   47


                              (2) the Trustee shall not be liable for any error
of judgment made in good faith by a Trust Officer unless it is proved that the
Trustee was negligent in ascertaining the pertinent facts; and

                              (3) the Trustee shall not be liable with respect
to any action it takes or omits to take in good faith in accordance with a
direction received by it pursuant to Section 6.05.

Subparagraphs (c)(1),(2) and (3) shall be in lieu of Sections 315(d)(1),
315(d)(2) and 315(d)(3) of the TIA and such Sections 315(d)(1), 315(d)(2) and
315(d)(3) are hereby expressly excluded from this Indenture, as permitted by the
TIA.

             (d) Every provision of this Indenture that in any way relates to
the Trustee is subject to paragraphs (a), (b), (c) and (e) of this Section 7.01.

             (e) The Trustee may refuse to perform any duty or exercise any
right or power or extend or risk its own funds or otherwise incur any financial
liability unless it receives indemnity satisfactory to it against any loss,
liability or expense.

             (f) Money held by the Trustee in trust hereunder need not be
segregated from other funds except to the extent required by law.

        SECTION 7.02. RIGHTS OF TRUSTEE.

             (a) The Trustee may rely on any document believed by it to be
genuine and to have been signed or presented by the proper Person. The Trustee
need not investigate any fact or matter stated in the document.

             (b) Before the Trustee acts or refrains from acting, it may require
a Company Order, an Officers' Certificate or an Opinion of Counsel. The Trustee
shall not be liable for any action it takes or omits to take in good faith in
reliance on a Company Order, Officers' Certificate or Opinion of Counsel.

             (c) The Trustee may act through agents and shall not be responsible
for the misconduct or negligence of any agent appointed with due care.

             (d) Subject to the provisions of Section 7.01(c), the Trustee shall
not be liable for any action it takes or omits to take in good faith which it
believes to be authorized or within its rights or powers.

             (e) The Trustee may consult with counsel selected by it and any
advice or Opinion of Counsel shall be full and complete authorization and
protection in respect of any action taken or suffered or omitted by it hereunder
in good faith and in accordance with such advice or Opinion of Counsel.



                                      -41-

<PAGE>   48



             (f) The Trustee shall be under no obligation to exercise any of the
rights or powers vested in it by this Indenture, unless the Holders shall have
offered to the Trustee reasonable security or indemnity against the costs,
expenses and liabilities which may be incurred therein or thereby.

       SECTION 7.03. INDIVIDUAL RIGHTS OF TRUSTEE. The Trustee in its individual
or any other capacity may become the owner or pledgee of Securities and may
otherwise deal with the Company or its Affiliates with the same rights it would
have if it were not Trustee. Any Paying Agent, Registrar, Conversion Agent or
co-registrar may do the same with the like rights. However, the Trustee must
comply with Section 7.10 and 7.11.

       SECTION 7.04. TRUSTEE'S DISCLAIMER. The Trustee makes no representation
as to the validity or adequacy of this Indenture or the Securities, it shall not
be accountable for the Company's use of the proceeds from the Securities, it
shall not be responsible for any statement in the offering memorandum for the
Securities or in this Indenture or the Securities (other than its certificate of
authentication), the acts of a prior Trustee hereunder, or the determination as
to which beneficial owners are entitled to receive any notices hereunder.

       SECTION 7.05. NOTICE OF DEFAULTS. If a Default occurs and is continuing
and if it is known to the Trustee, the Trustee shall give to each Securityholder
notice of the Default within 90 days after it occurs. Except in the case of a
Default described in Section 6.01(1), the Trustee may withhold the notice if and
so long as a committee of its Trust Officers in good faith determines that
withholding the notice is in the interests of Holders. The second sentence of
this Section 7.05 shall be in lieu of the proviso to Section 315(b) of the TIA
and such provision is hereby expressly excluded from this Indenture, as
permitted by the TIA. The Trustee shall not give notice of a Default pursuant to
Section 6.01(2) until at least sixty days have passed since its occurrence.

       SECTION 7.06. REPORTS BY TRUSTEE TO HOLDERS. Within 60 days after each
May 1, beginning with the May 1 following the date of this Indenture, the
Trustee shall mail to each Holder a brief report dated as of such May 1 that
complies with TIA Section 313(a), if required by such Section 313(a). The
Trustee also shall comply with TIA Section 313(b).

       A copy of each report at the time of its mailing to Holders shall be
filed with the SEC and each securities exchange on which the Securities are
listed. The Company agrees to notify the Trustee whenever the Securities become
listed on any securities exchange and of any delisting thereof.

        SECTION 7.07. COMPENSATION AND INDEMNITY. The Company agrees:

             (a) to pay to the Trustee from time to time reasonable compensation
for all services rendered by it hereunder (which compensation shall not be
limited by any provision of law in regard to the compensation of a trustee of an
express trust);

             (b) to reimburse the Trustee upon its request for all reasonable
expenses, disbursements and advances incurred or made by the Trustee in
accordance with any provision of this Indenture


                                      -42-

<PAGE>   49



(including the reasonable compensation and the expense, advances and
disbursements of its agents and counsel), except any such expense, disbursement
or advance as may be attributable to its negligence or bad faith; and

             (c) to indemnify the Trustee for, and to hold it harmless against,
any loss, liability or expense incurred without negligence or bad faith on its
part, arising out of or in connection with the acceptance or administration of
this trust, including the costs and expenses of defending itself against any
claim or liability in connection with the exercise or performance of any of its
powers or duties hereunder.

       To secure the Company's payment obligations in this Section 7.07, the
Trustee shall have a lien prior to the Securities on all money or property held
or collected by the Trustee, except that held in trust to pay the Principal
Amount, Issue Price, accrued Original Issue Discount, accrued Liquidated
Damages, if any, Redemption Price, Purchase Price, Fundamental Change Redemption
Price or interest, if any, as the case may be, on particular Securities.

       The Company's payment obligations pursuant to this Section 7.07 shall
survive the discharge of this Indenture. When the Trustee incurs expenses after
the occurrence of a Default specified in Section 6.01(3) or (4), the expenses
are intended to constitute expenses of administration under any Bankruptcy Law.

       SECTION 7.08. REPLACEMENT OF TRUSTEE. The Trustee may resign by so
notifying the Company; provided, however, that no such resignation shall be
effective until a successor Trustee has accepted its appointment pursuant to
this Section 7.08. The Holders of a majority in aggregate Principal Amount of
the Securities at the time outstanding may remove the Trustee by so notifying
the Trustee and may appoint a successor Trustee. The Company shall remove the
Trustee if:

             (1) the Trustee fails to comply with, or ceases to be eligible
under, Section 7.10;

             (2) the Trustee is adjudged bankrupt or insolvent;

             (3) a receiver or public officer takes charge of the Trustee or its
property; or

             (4) the Trustee otherwise becomes incapable of acting.

       If the Trustee resigns or is removed or if a vacancy exists in the office
of Trustee for any reason, the Company shall promptly appoint, by resolution of
its Board of Directors, a successor Trustee.

       A successor Trustee shall deliver a written acceptance of its appointment
to the retiring Trustee and to the Company. Thereupon the resignation or removal
of the retiring Trustee shall become effective, and the successor Trustee shall
have all the rights, powers and duties of the Trustee under this Indenture. The
successor Trustee shall mail a notice of its succession to


                                      -43-

<PAGE>   50



Holders. The retiring Trustee shall promptly transfer all property held by it as
Trustee to the successor Trustee, subject to the lien provided for in Section
7.07.

       If a successor Trustee does not take office within 30 days after the
retiring Trustee resigns or is removed, the retiring Trustee, the Company or the
Holders of a majority in aggregate Principal Amount of the Securities at the
time outstanding may petition any court of competent jurisdiction for the
appointment of a successor Trustee.

       If the Trustee fails to comply with Section 7.10, any Securityholder may
petition any court of competent jurisdiction for the removal of the Trustee and
the appointment of a successor Trustee.

       SECTION 7.09. SUCCESSOR TRUSTEE BY MERGER. If the Trustee consolidates
with, merges or converts into, or transfers all or substantially all its
corporate trustee business (including the trust created by this Indenture) or
assets to, another corporation, the resulting, surviving or transferee
corporation without any further act shall be the successor Trustee.

       SECTION 7.10. ELIGIBILITY; DISQUALIFICATION. The Trustee shall at all
times satisfy the requirements of TIA Sections 310(a)(1) and 310(b). The Trustee
shall have a combined capital and surplus of at least $50,000,000 (or if the
Trustee is a member of a bank holding company system, its bank holding company
shall have a combined capital and surplus of $50,000,000) as set forth in its
most recent published annual report of conditions. Nothing herein contained
shall prevent the Trustee from filing with the SEC the application referred to
in the penultimate paragraph of TIA Section 310(b). If at any time the Trustee
shall cease to be eligible in accordance with the provisions of this Section
7.10, it shall resign immediately in the manner and with the effect hereinafter
specified in this Article 7.

       SECTION 7.11. PREFERENTIAL COLLECTION OF CLAIMS AGAINST COMPANY. The
Trustee shall comply with TIA Section 311(a), excluding any creditor
relationship listed in TIA Section 311(b). A Trustee who has resigned or been
removed shall be subject to TIA Section 311(a) to the extent indicated therein.


                                    ARTICLE 8

                             DISCHARGE OF INDENTURE

       SECTION 8.01. DISCHARGE OF LIABILITY ON SECURITIES. When (i) the Company
delivers to the Trustee all outstanding Securities (other than Securities
replaced pursuant to Section 2.07) for cancellation or (ii) all outstanding
Securities have become due and payable and the Company deposits with the Trustee
Cash and/or securities, as permitted by the terms hereof, sufficient to pay at
Stated Maturity the Principal Amount of all outstanding Securities (other than
Securities replaced pursuant to Section 2.07), and if in either case the Company
pays all other sums payable hereunder by the Company, then this Indenture shall,
subject to Section 7.07, cease to be of further effect. The Trustee shall join
in the execution of a document prepared by the Company


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<PAGE>   51



acknowledging satisfaction and discharge of this Indenture on demand of the
Company accompanied by an Officers' Certificate and Opinion of Counsel and at
the cost and expense of the Company.

       SECTION 8.02. REPAYMENT TO THE COMPANY. The Trustee and the Paying Agent
shall return to the Company upon written request any money or securities held by
them for the payment of any amount with respect to the Securities that remains
unclaimed for two years, provided, however, that the Trustee or such Paying
Agent, before being required to make any such return, shall, in the event that
the Securities are no longer held in global form, at the expense of the Company
cause to be published once in a newspaper of general circulation in The City of
New York or mail to each such Holder notice that such money or securities
remains unclaimed and that, after a date specified therein, which shall not be
less than 30 days from the date of such publication or mailing, any unclaimed
money or securities then remaining will be returned to the Company. After return
to the Company, Holders entitled to the money or securities must look to the
Company for payment as general creditors unless an applicable abandoned property
law designates another Person.


                                    ARTICLE 9

                                   AMENDMENTS

        SECTION 9.01. WITHOUT CONSENT OF HOLDERS. The Company and the Trustee
may amend this Indenture and the Securities without the consent of any
Securityholder:

             (1) to cure any ambiguity or to correct or supplement any provision
contained herein or in any supplemental indenture which may be defective or
inconsistent with any other provision contained herein or in any supplemental
indenture, or to make such other provisions in regard to matters or questions
arising under this Indenture which shall not materially adversely affect the
interests of the Holders of the Securities;

             (2)   to comply with Article 5 or Section 11.14;

             (3) to provide for uncertificated Securities in addition to
certificated Securities so long as such uncertificated Securities are in
registered form for purposes of the Internal Revenue Code of 1986, as amended;

             (4) to make any change that does not adversely affect the right of
any Securityholder; or

             (5) to make any change to comply with the TIA, or any amendment
thereto, or to comply with any requirement of the SEC in connection with the
qualification, if any, of the Indenture under the TIA.

        SECTION 9.02. WITH CONSENT OF HOLDERS. The Company and the Trustee, with
the written consent of the Holders of at least a majority in aggregate Principal
Amount of the Securities at the


                                      -45-

<PAGE>   52



time outstanding, may amend this Indenture or the Securities. However, without
the consent of each Securityholder affected, an amendment or supplement to this
Indenture or the Securities may not:

             (1) make any change to the Principal Amount of Securities whose
Holders must consent to an amendment;

             (2) make any change to the manner or rate of accrual in connection
with Original Issue Discount or interest, if any, reduce the rate of interest
referred to in paragraph 1 of the Securities or extend the time for payment of
Original Issue Discount or interest, if any, on any Security;

             (3) reduce the Principal Amount or the Issue Price of or extend the
Stated Maturity of any Security;

             (4) reduce the Redemption Price, Purchase Price or Fundamental 
Change Redemption Price of any Security;

             (5) make any Security payable in money or securities other than 
that stated in the Security;

             (6) make any change in Article 10 that adversely affects the rights
of any Securityholder in any material respect;

             (7) make any change in Section 6.04, Section 6.07 or this Section
9.02, except to increase any such percentage;

             (8) make any change that adversely affects the right to convert any
Security; or

             (9) make any change that adversely affects the right to require the
Company to purchase the Securities, or the right to require the Company to
redeem the Securities upon a Fundamental Change, in accordance with the terms
thereof and this Indenture.

       It shall not be necessary for the consent of the Holders under this
Section 9.02 to approve the particular form of any proposed amendment, but it
shall be sufficient if such consent approves the substance thereof.

       An amendment under this Section 9.02 or Section 9.01 may not make any
change that adversely affects the rights under Article 10 of any holder of
Senior Indebtedness then outstanding unless the requisite holders of such Senior
Indebtedness consent to such change pursuant to the terms of such Senior
Indebtedness.

       After an amendment under this Section 9.02 becomes effective, the Company
shall mail to each Holder a notice briefly describing the amendment.



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<PAGE>   53



        SECTION 9.03. COMPLIANCE WITH TRUST INDENTURE ACT. Every supplemental
indenture executed pursuant to this Article 9 shall comply with the TIA as then
in effect, if then required to so comply.

       SECTION 9.04. REVOCATION AND EFFECT OF CONSENTS, WAIVERS AND ACTIONS.
Until an amendment, waiver or other action becomes effective, a consent to it or
any other action by a Holder of a Security is a continuing consent by the Holder
and every subsequent Holder of that Security or portion of the Security that
evidences the same obligation as the consenting Holder's Security, even if
notation of the consent, waiver or action is not made on the Security. However,
any such Holder or subsequent Holder may revoke the consent, waiver or action as
to such Holder's Security or portion of the Security if the Trustee receives the
notice or revocation before the date the amendment, waiver or action becomes
effective. After an amendment, waiver or action becomes effective, it shall bind
every Securityholder.

       SECTION 9.05. NOTATION ON OR EXCHANGE OF SECURITIES. Securities
authenticated and delivered after the execution of any supplemental indenture
pursuant to this Article 9 may, and shall if required by the Trustee, bear a
notation in form approved by the Trustee as to any matter provided for in such
supplemental indenture. If the Company shall so determine, new Securities so
modified as to conform, in the opinion of the Trustee and the Board of
Directors, to any such supplemental indenture may be prepared and executed by
the Company and authenticated and delivered by the Trustee in exchange for
outstanding Securities.

       SECTION 9.06. TRUSTEE TO SIGN SUPPLEMENTAL INDENTURES. The Trustee shall
sign any supplemental indenture authorized pursuant to this Article 9 if the
amendment does not adversely affect the rights, duties, liabilities or
immunities of the Trustee. If it does, the Trustee may, but need not, sign such
supplemental indenture. In signing such amendment the Trustee shall be entitled
to receive, and (subject to the provisions of Section 7.01) shall be fully
protected in relying upon, an Officers' Certificate and an Opinion of Counsel
stating that such amendment is authorized or permitted by this Indenture.

       SECTION 9.07. EFFECT OF SUPPLEMENTAL INDENTURES. Upon the execution of
any supplemental indenture under this Article 9, this Indenture shall be
modified in accordance therewith, and such supplemental indenture shall form a
part of this Indenture for all purposes; and every Holder of Securities
theretofore or thereafter authenticated and delivered hereunder shall be bound
thereby.


                                   ARTICLE 10

                                  SUBORDINATION

        SECTION 10.01. AGREEMENT OF SUBORDINATION. The Company covenants and
agrees, and each Holder of Securities issued hereunder by such Holder's
acceptance thereof likewise covenants and agrees, that all Securities shall be
issued subject to the provisions of this Article 10; and each


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<PAGE>   54



Person holding any such Security whether upon original issue or upon transfer or
assignment thereof, accepts and agrees to be bound by such provisions.

       The payment of the Principal Amount, Issue Price, accrued Original Issue
Discount, accrued Liquidated Damages, if any, Redemption Price, Purchase Price,
Fundamental Change Redemption Price and interest, if any, in respect of all
Securities issued hereunder shall, to the extent and in the manner hereinafter
set forth, be subordinated and subject in right of payment to the prior payment
in full in Cash or other payment satisfactory to the holders of Senior
Indebtedness of all Senior Indebtedness of the Company, whether outstanding at
the date of this Indenture or thereafter incurred.

       No provision of this Article 10 shall prevent the occurrence of any
Default or Event of Default hereunder.

       SECTION 10.02. PAYMENTS TO HOLDERS. No payment shall be made with respect
to the payment of Principal Amount, Issue Price, accrued Original Issue
Discount, accrued Liquidated Damages, if any, Redemption Price, Purchase Price,
Fundamental Change Redemption Price and interest, if any, on the Securities,
except payments and distributions made by the Trustee as permitted by Section
10.05, if:

                              (i) a default in any payment obligations in
respect of Senior Indebtedness occurs and is continuing, without regard to any
applicable period of grace (whether at maturity or at a date fixed for payment
or by declaration or otherwise); or

                              (ii) any other default occurs and is continuing
with respect to Designated Senior Indebtedness that permits the holders of such
Designated Senior Indebtedness as to which such default relates to accelerate
its maturity and the Trustee receives a notice of the default (a "Payment
Blockage Notice") from a holder of Designated Senior Indebtedness, a
Representative of Designated Senior Indebtedness or the Company.

             If the Trustee receives any Payment Blockage Notice pursuant to
clause (ii) above, no subsequent Payment Blockage Notice shall be effective for
purposes of this Section unless and until at least 365 days shall have elapsed
since the initial effectiveness of the immediately prior Payment Blockage
Notice. No nonpayment default that existed or was continuing on the date of
delivery of any Payment Blockage Notice to the Trustee shall be, or be made, the
basis for a subsequent Payment Blockage Notice unless such default shall have
been cured or waived for a period of not less than 90 days (it being
acknowledged that (x) any action of the Company or any of its Subsidiaries
occurring subsequent to delivery of a Payment Blockage Notice that would give
rise to any event of default pursuant to any provision of Senior Indebtedness
under which an event of default previously existed (or was continuing at the
time of delivery of such Payment Blockage Notice) shall constitute a new event
of default for this purpose and (y) any breach of a financial covenant giving
rise to a nonpayment default for a period ending subsequent to the date of
delivery of the respective Payment Blockage Notice shall constitute a new event
of default for this purpose.)



                                      -48-

<PAGE>   55



             The Company may and shall resume payments on and distributions in
respect of the Securities upon the earlier of:

             (1) in case of a default referred to in clause (i) above, the date
upon which the default is cured or waived in accordance with the terms of the
governing instrument or ceases to exist, or

             (2) in the case of a default referred to in clause (ii) above, the
date upon which the default is cured, waived in accordance with the terms of the
governing instrument or ceases to exist or 179 days pass after notice is
received if the maturity of such Designated Senior Indebtedness has not been
accelerated,

unless this Article 10 otherwise prohibits the payment or distribution at the
time of such payment or distribution.

       Upon any payment by the Company or distribution of assets of the Company
of any kind or character, whether in cash, property or securities, to creditors
upon any dissolution or winding-up or liquidation or reorganization or
bankruptcy of the Company, whether voluntary or involuntary or insolvency,
receivership or similar proceedings relating to the Company or its property, or
an assignment for the benefit of creditors or any marshaling of the Company's
assets or liabilities, all amounts due or to become due upon all Senior
Indebtedness shall first be paid in full in Cash or other payment satisfactory
to the holders of such Senior Indebtedness, or provision is made for such
payment in Cash or other payment satisfactory to the holders of Senior
Indebtedness, before any payment is made on account of the Principal Amount,
Issue Price, accrued Original Issue Discount, accrued Liquidated Damages, if
any, Redemption Price, Purchase Price, Fundamental Change Redemption Price or
interest, if any, in respect of the Securities (except payments made pursuant to
Article 8 hereof from monies deposited with the Trustee pursuant thereto prior
to the happening of such dissolution or winding-up or liquidation or
reorganization or bankruptcy of the Company, whether voluntary or involuntary or
insolvency, receivership or similar proceedings relating to the Company or its
property, or an assignment of the benefit of creditors or any marshaling of the
Company's assets or liabilities), and upon any such dissolution or winding-up or
liquidation or reorganization or bankruptcy of Company, whether voluntary or
involuntary or insolvency, receivership or similar proceedings relating to the
Company or its property, or an assignment of the benefit of creditors or any
marshaling of the Company's assets or liabilities, any payment by the Company,
or distribution of assets of the Company of any kind or character, whether in
cash, property or securities, to which the Holders or the Trustee would be
entitled, except for the provisions of this Article 10, shall (except as
aforesaid) be paid by the Company or by any receiver, trustee in bankruptcy,
liquidating trustee, agent or other Person making such payment or distribution,
or by the Holders of the Securities or by the Trustee if received by them or it,
directly to the holders of Senior Indebtedness (pro rata to such holders on the
basis of the respective amounts of Senior Indebtedness held by such holders, as
calculated by the Company) or their representative or representatives, or to the
trustee or trustees under any indenture pursuant to which any instruments
evidencing any such Senior Indebtedness may have been issued, as their
respective interests may appear to the extent necessary to pay all such Senior
Indebtedness in full in Cash or other payment satisfactory to the holders of
such Senior Indebtedness, after giving effect


                                      -49-

<PAGE>   56



to any concurrent payment or distribution to or for the holders of such Senior
Indebtedness, before any payment or distribution is made to the Holders or to
the Trustee.

       In the event that any Securities are declared due and payable before
their Stated Maturity pursuant to Section 6.02, then and in such event the
Company shall promptly notify holders of its Senior Indebtedness of such
acceleration. The Company may not pay the Securities until 120 days have passed
after such acceleration occurs and may thereafter pay the Securities if this
Article 10 permits the payment at that time.

       In the event that, notwithstanding the foregoing provisions, any payment
or distribution of assets of the Company of any kind or character, whether in
cash, property or securities (including, without limitation, by way of setoff or
otherwise), prohibited by the foregoing provisions in this Section 10.02, shall
be received by the Trustee or the Holders of the Securities before all Senior
Indebtedness of the Company is paid in full in Cash or other payment
satisfactory to the holders of such Senior Indebtedness, or provision is made
for such payment in Cash or other payment satisfactory to the holders of such
Senior Indebtedness, such payment or distribution shall be held in trust for the
benefit of and shall be paid over or delivered to the holders of Senior
Indebtedness of the Company or their representative or representatives, or to
the trustee or trustees under any indenture pursuant to which any instruments
evidencing any such Senior Indebtedness may have been issued, as their
respective interests may appear, as calculated by the Company, for application
to the payment of all such Senior Indebtedness remaining unpaid to the extent
necessary to pay all such Senior Indebtedness in full in Cash or other payment
satisfactory to the holders of such Senior Indebtedness, after giving effect to
any concurrent payment or distribution to or for the holders of such Senior
Indebtedness.

       For purposes of this Article 10, the words, "cash, property or
securities" shall not be deemed to include shares of stock of the Company as
reorganized or readjusted, or securities of the Company or any other corporation
provided for by a plan of reorganization or readjustment, the payment of which
is subordinated at least to the extent provided in this Article 10 with respect
to the Securities to the payment of all Senior Indebtedness of the Company which
may at the time be outstanding; provided that (i) such Senior Indebtedness is
assumed by the new corporation, if any, resulting from any such reorganization
or readjustment, and (ii) the rights of the holders of such Senior Indebtedness
(other than leases that are not assumed by the Company or the new corporation,
as the case may be) are not, without the consent of such holders, altered by
such reorganization or readjustment. The consolidation of the Company with, or
the merger of the Company into, another corporation or the liquidation or
dissolution of the Company following the conveyance or transfer of its property
as an entirety, or substantially as an entirety, to another corporation upon the
terms and conditions provided for in Article 5 hereof shall not be deemed a
dissolution, winding-up, liquidation or reorganization for the purposes of this
Section 10.02 if such other corporation shall, as a part of such consolidation,
merger, conveyance or transfer, comply with the conditions stated in Article 5
hereof.



                                      -50-

<PAGE>   57



       Nothing in this Section 10.02 shall apply to claims of, or payments to,
the Trustee under or pursuant to Section 7.07. This Section 10.02 shall be
subject to the further provisions of Section 10.05.

       SECTION 10.03. SUBROGATION OF SECURITIES. Subject to the payment in full
in Cash or other payment satisfactory to the holders of Senior Indebtedness of
all Senior Indebtedness of the Company, the rights of the Holders shall be
subrogated to the rights of the holders of such Senior Indebtedness to receive
payments or distributions of cash, property or securities of the Company
applicable to such Senior Indebtedness until the Principal Amount, Issue Price,
accrued Original Issue Discount, accrued Liquidated Damages, if any, Redemption
Price, Purchase Price, Fundamental Change Redemption Price and interest, if any,
in respect of the Securities shall be paid in full; and, for the purposes of
such subrogation, no payments or distributions to the holders of such Senior
Indebtedness of any cash, property or securities to which the Holders or the
Trustee would be entitled except for the provisions of this Article 10, and no
payment over pursuant to the provisions of this Article 10, to or for the
benefit of the holders of such Senior Indebtedness by Holders or the Trustee,
shall, as between the Company, its creditors other than holders of its Senior
Indebtedness, and the Holders of the Securities be deemed to be a payment by the
Company to or on account of its Senior Indebtedness; and no payments or
distributions of cash, property or securities to or for the benefit of the
Holders pursuant to the subrogation provisions of this Article 10, which would
otherwise have been paid to the holders of Senior Indebtedness shall be deemed
to be a payment by the Company to or for the account of the Securities. It is
understood that the provisions of this Article 10 are and are intended solely
for the purpose of defining the relative rights of the Holders on the one hand,
and the holders of Senior Indebtedness, on the other hand.

       Nothing contained in this Article 10 or elsewhere in this Indenture or in
the Securities is intended to or shall impair, as between the Company, its
creditors other than the holders of its Senior Indebtedness and the Holders, the
obligation of the Company, which is absolute and unconditional, to pay to the
Holders the Principal Amount, Issue Price, accrued Original Issue Discount,
accrued Liquidated Damages, if any, Redemption Price, Purchase Price,
Fundamental Change Redemption Price and interest, if any, in respect of the
Securities as and when the same shall become due and payable in accordance with
their terms, or is intended to or shall affect the relative rights of the
Holders and creditors of the Company other than the holders of the Senior
Indebtedness, nor shall anything herein or therein prevent the Trustee or the
Holder of any Security from exercising all remedies otherwise permitted by
applicable law upon an Event of Default, subject to the rights, if any, under
this Article 10 of the holders of Senior Indebtedness in respect of cash,
property or securities of the Company received upon the exercise of any such
remedy.

       Upon any payment or distribution of assets of the Company referred to in
this Article 10, the Trustee, subject to the provisions of Section 7.01, and the
Holders of the Securities shall be entitled to rely upon any order or decree
made by any court of competent jurisdiction in which such dissolution,
winding-up, liquidation or reorganization proceedings are pending, or a
certificate of the receiver, trustee in bankruptcy, liquidating trustee, agent
or other Person making such payment or distribution, delivered to the Trustee,
to the Holders for the purpose of ascertaining the Persons entitled to
participate in such distribution, the holders of the Senior Indebtedness and
other


                                      -51-

<PAGE>   58



indebtedness of the Company, the amount thereof or payable thereon, the amount
or amounts paid or distributed thereon and all other facts pertinent thereto or
to this Article 10.

       SECTION 10.04. AUTHORIZATION BY HOLDERS. Each Holder by such Holder's
acceptance thereof authorizes and directs the Trustee in such Holder's behalf to
take such action as may be necessary or appropriate to effectuate the
subordination provided in this Article 10 and appoints the Trustee such Holder's
attorney-in-fact for any and all such purposes.

       SECTION 10.05. NOTICE TO TRUSTEE. The Company shall give prompt written
notice in a form of an Officers' Certificate to a Trust Officer of any fact
known to the Company which would prohibit the making of any payment of monies to
or by the Trustee or any Paying Agent in respect of the Securities pursuant to
the provisions of this Article 10. Notwithstanding the provisions of this
Article 10 or any other provision of this Indenture, the Trustee shall not be
charged with knowledge of the existence of any facts which would prohibit the
making of any payment of monies to or by the Trustee in respect of the
Securities pursuant to the provisions of this Article 10, unless and until a
Trust Officer shall have received written notice thereof at the Corporate Trust
Office from the Company (in the form of an Officers' Certificate) or a holder or
holders of Senior Indebtedness or a Representative or from any trustee therefor;
and before the receipt of any such written notice, the Trustee, subject to the
provisions of Section 7.01, shall be entitled in all respects to assume that no
such facts exist; provided that if on a date not fewer than two Business Days
prior to the date upon which by the terms hereof any such monies may become
payable for any purpose (including, without limitation, the payment of the
Principal Amount, Issue Price, accrued Original Issue Discount, accrued
Liquidated Damages, if any, Redemption Price, Purchase Price, Fundamental Change
Redemption Price or interest, if any, in respect of any Security, the Trustee
shall not have received, with respect to such monies, the notice provided for in
this Section 10.05, then, anything herein contained to the contrary
notwithstanding, the Trustee shall have full power and authority to receive such
monies and to apply the same to the purpose for which they were received, and
shall not be affected by any notice to the contrary which may be received by it
on or after such prior date.

       Notwithstanding anything to the contrary herein set forth, nothing shall
prevent any payment by the Company or the Trustee to the Holders of monies (A)
in connection with a redemption of Securities if (i) notice of such redemption
has been given pursuant to Article 3 or Section 8.01 hereof prior to the receipt
by the Trustee of written notice as aforesaid, and (ii) such notice of
redemption is given not earlier than 60 days before the redemption date; and (B)
in connection with a repayment of a Security pursuant to Section 3.09 if, prior
to the receipt by the Trustee of written notice as aforesaid, the Company has
given notice of a Fundamental Change.

       The Trustee, subject to the provisions of Section 7.01, shall be entitled
to rely on the delivery to it of a written notice by a Person representing
himself to be a holder or a Representative of Designated Senior Indebtedness or
a Representative of Senior Indebtedness (or a trustee on behalf of such holder)
to establish that such notice has been given by a holder or a Representative of
Designated Senior Indebtedness or a Representative of such Senior Indebtedness
or a trustee on behalf of any such holder or holders. In the event that the
Trustee determines in good faith that


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<PAGE>   59



further evidence is required with respect to the right of any Person as a holder
of Senior Indebtedness to participate in any payment or distribution pursuant to
this Article 10, the Trustee may request such Person to furnish evidence to the
reasonable satisfaction of the Trustee as to the amount of such Senior
Indebtedness held by such Person, the extent to which such Person is entitled to
participate in such payment or distribution and any other facts pertinent to the
rights of such Person under this Article 10, and if such evidence is not
furnished the Trustee may defer any payment to such Person pending judicial
determination as to the right of such Person to receive such payment.

       SECTION 10.06. TRUSTEE'S RELATION TO SENIOR INDEBTEDNESS. The Trustee in
its individual capacity shall be entitled to all the rights set forth in this
Article 10 in respect of any Senior Indebtedness at any time held by it, to the
same extent as any other holder of such Senior Indebtedness, and nothing or
elsewhere in this Indenture shall deprive the Trustee of any of its rights as
such holder.

       With respect to the holders of Senior Indebtedness, the Trustee
undertakes to perform or to observe only such of its covenants and obligations
as are specifically set forth in this Article 10, and no implied covenants or
obligations with respect to the holders of such Senior Indebtedness shall be
read into this Indenture against the Trustee. The Trustee shall not be deemed to
owe any fiduciary duty to the holders of Senior Indebtedness and, subject to the
provisions of Section 7.01, the Trustee shall not be liable to any holder of
such Senior Indebtedness if it shall pay over or deliver to Holders, the Company
or any other Person money or assets to which any holder of Senior Indebtedness
shall be entitled by virtue of this Article 10 or otherwise.

       SECTION 10.07. NO IMPAIRMENT OF SUBORDINATION. No right of any present or
future holder of any Senior Indebtedness to enforce subordination as herein
provided shall at any time in any way be prejudiced or impaired by (i) any
amendment of or addition or supplement to any such Senior Indebtedness or any
instrument or agreement relating thereto (unless otherwise expressly provided
therein), or (ii) any act or failure to act on the part of the Company or by any
act or failure to act, in good faith, by any such holder, or by any
noncompliance by the Company with the terms, provisions and covenants of the
instrument, regardless of any knowledge thereof which any such holder may have
or otherwise be charged with.

       SECTION 10.08. RELIANCE BY HOLDERS OF SENIOR INDEBTEDNESS ON
SUBORDINATION PROVISIONS. Each Holder of Securities by such Holder's acceptance
thereof, acknowledges and agrees that the foregoing subordination provisions
are, and are intended to be, an inducement and a consideration to each holder of
any Senior Indebtedness, whether such Senior Indebtedness was created or
acquired before or after the issuance of the Securities, to acquire and continue
to hold, or to continue to hold, such Senior Indebtedness and such holder of
Senior Indebtedness shall be deemed conclusively to have relied on such
subordination provisions in acquiring and continuing to hold, or in continuing
to hold, such Senior Indebtedness, and no amendment or modification of the
provisions contained herein shall diminish the rights of such holder or holders
unless such holder or holders shall have agreed in writing thereto.



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<PAGE>   60



       SECTION 10.09. REINSTATEMENT OF SUBORDINATION. If, at any time, all or
part of any payment of any Senior Indebtedness theretofore made by the Company
or any other Person is rescinded or must otherwise be returned by the holders of
such Senior Indebtedness for any reason whatsoever (including, without
limitation, the insolvency, bankruptcy or reorganization of the Company or such
other Person), these subordination provisions shall continue to be effective or
be reinstated, as the case may be, all as though such payment had not been made.

       SECTION 10.10. PERMITTED PAYMENTS. Nothing contained in this Article 10
or elsewhere in this Indenture, or in the Securities shall prevent (a) the
Company at any time, except under the conditions described in Section 10.02,
from making payments at any time of Principal Amount, Issue Price, accrued
Original Issue Discount, accrued Liquidated Damages, if any, Redemption Price,
Purchase Price, Fundamental Change Redemption Price or interest, if any, in
respect of the Securities, or from depositing with the Trustee or any Paying
Agent money for such payments, or (b) the application by the Trustee or Paying
Agent of any moneys deposited with it under this Indenture to the payment of or
on account of the Principal Amount, Issue Price, accrued Original Issue
Discount, accrued Liquidated Damages, if any, Redemption Price, Purchase Price,
Fundamental Change Redemption Price or interest, if any, in respect of the
Securities to the Holders entitled thereto to the beneficiaries thereof, if such
payment would not have been prohibited by the provisions of Section 10.02.

       SECTION 10.11. ARTICLE APPLICABLE TO PAYING AGENTS. If at any time any
Paying Agent other than the Trustee shall have been appointed by the Company and
be then acting hereunder, the term "Trustee" as used in this Article 10 shall
(unless the context otherwise requires) be construed as extending to and
including such Paying Agent within its meaning as fully for all intents and
purposes as if such Paying Agent were named in this Article 10 in addition to or
in place of the Trustee; provided, however, that the first paragraph of Section
10.05 shall not apply to the Company or any Affiliate of the Company if it or
such Affiliate acts as Paying Agent.

       SECTION 10.12. TREATMENT OF CONVERSION PAYMENTS. Notwithstanding anything
in this Indenture to the contrary, neither the issuance and delivery of junior
securities upon conversion of the Securities in accordance with Article 11 nor
the payment of Cash in lieu of fractional shares of Common Stock in accordance
with Article 11 shall be deemed to constitute a payment or distribution on
account of the Principal Amount, Issue Price, accrued Original Issue Discount,
accrued Liquidated Damages, if any, Redemption Price or Fundamental Change
Purchase Price or interest, if any, in respect of the Securities. For the
purposes of this paragraph, the term "junior securities" means (a) shares of any
stock of any class of the Company, (b) securities of the Company which are
subordinated in right of payment to all Senior Indebtedness which may be
outstanding at the time of issuance or delivery of such securities to
substantially the same extent as, or to a greater extent than, the Securities
are so subordinated as provided in this Article 10, and (c) any securities into
which the Securities become convertible pursuant to Section 11.14 which are
securities of a Person required to enter into a supplemental indenture pursuant
to such section (or Section 5.01) and are either (x) shares of any stock of any
class of such Person, or (y) securities of such Person which are subordinated in
right of payment to all Senior Indebtedness of such Person which may be
outstanding at the time of issuance or delivery of such securities to
substantially the


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<PAGE>   61



same extent as, or to a greater extent than, the Securities or, are so
subordinated as provided in this Article 10. Nothing contained in this Article
10 or elsewhere in this Indenture or in the Securities is intended to or shall
impair, as among the Company, its creditors other than the holders of Senior
Indebtedness and the Holders, the right, which is absolute and unconditional, of
the Holder to convert such Security in accordance with Article 11.

       SECTION 10.13. RELIANCE ON JUDICIAL ORDER OR CERTIFICATE OF LIQUIDATING
AGENT. Upon any payment or distribution of assets of the Company referred to in
this Article 10, the Trustee and the Holders shall be entitled to rely upon any
order or decree entered by any court of competent jurisdiction in which such
insolvency, bankruptcy, receivership, liquidation, reorganization, dissolution,
winding up or similar case or proceeding is pending, or a certificate of the
trustee in bankruptcy, liquidating trustee, custodian, receiver, assignee for
the benefit of creditors, agent or other Person making such payment or
distribution, delivered to the Trustee or to the Holders, for the purpose of
ascertaining the Persons entitled to participate in such payment or
distribution, the holders of Senior Indebtedness and other indebtedness of the
Company, the amount thereof or payable thereon, the amount or amounts paid or
distributed thereon and all other facts pertinent thereto or to this Article 10.

       SECTION 10.14. HOLDERS OF SENIOR INDEBTEDNESS MAY FILE PROOFS OF CLAIM.
If the Trustee does not file a claim or proof of debt in the form required in
any receivership, insolvency, liquidation, bankruptcy, reorganization,
arrangement, adjustment, composition or other judicial proceeding pursuant to
Section 6.09 prior to 30 days before the expiration of the time to file such
claims or proofs, then any holder or holders of Senior Indebtedness or their
representative or representatives shall have the right to demand, sue for,
collect, receive and receipt for the payments and distributions in respect of
the Securities which are required to be paid or delivered to the holders of
Senior Indebtedness as provided in this Article 10 and to file and prove all
claims therefor and to take all such other action in the name of the holders or
otherwise, as such holders of Senior Indebtedness or representative thereof may
determine to be necessary or appropriate for the enforcement of the provisions
of this Article 10.


                                   ARTICLE 11

                                   CONVERSION

       SECTION 11.01. CONVERSION PRIVILEGE. A Holder of a Security may convert
such Security for Common Stock at any time during the period stated in paragraph
9 of the Securities. The number of shares of Common Stock issuable upon
conversion of a Security per $1,000 of Principal Amount thereof (the "Conversion
Rate") shall be that set forth in paragraph 9 in the Securities, subject to
adjustment as herein set forth.

       A Holder may convert a portion of the Principal Amount of a Security if
the portion is $1,000 or a multiple of $1,000. Provisions of this Indenture that
apply to conversion of all of a Security also apply to conversion of a portion
of a Security.


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<PAGE>   62



       SECTION 11.02. CONVERSION PROCEDURE. To convert a Security a Holder must
satisfy the requirements in paragraph 9 of the Securities. The date on which the
Holder of Securities satisfies all those requirements is the conversion date
(the "Conversion Date"). As soon as practicable after the Conversion Date the
Company shall deliver to the Holder, through the Conversion Agent, a certificate
for the number of full shares of Common Stock issuable upon the conversion and
Cash in lieu of any fractional share determined pursuant to Section 11.03. The
Person in whose name the certificate is registered shall be treated as a
stockholder of record on and after the Conversion Date; provided, however, that
no surrender of a Security on any date when the stock transfer books of the
Company shall be closed shall be effective to constitute the Person or Persons
entitled to receive the shares of Common Stock upon such conversion as the
record holder or holders of such shares of Common Stock on such date, but such
surrender shall be effective to constitute the Person or Persons entitled to
receive such shares of Common Stock as the record holder or holders thereof for
all purposes at the close of business on the next succeeding day on which such
stock transfer books are open; such conversion shall be at the Conversion Rate
in effect on the date that such Security shall have been surrendered for
conversion, as if the stock transfer books of the Company had not been closed.
Upon conversion of a Security, such Person shall no longer be a Holder of such
Security.

       No payment or adjustment will be made for dividends on or other
distribution with respect to any Common Stock except as provided in this Article
11. On conversion of a Security, that portion of accrued Original Issue Discount
attributable to the period from the Issue Date of the Security to the Conversion
Date with respect to the converted Security shall not be canceled, extinguished
or forfeited, but rather shall be deemed to be paid in full to the Holder
thereof through delivery of the Common Stock (together with the Cash payment, if
any, in lieu of fractional shares) in exchange for the Security being converted
pursuant to the provisions hereof.

       If a Holder converts more than one Security at the same time, the number
of shares of Common Stock issuable upon the conversion shall be based on the
total Principal Amount of the Securities converted.

       Upon surrender of a Security that is convert in part, the Company shall
execute, and the Trustee shall authenticate and deliver to the Holder, a new
Security in an authorized denomination equal in Principal Amount to the
unconverted portion of the Security surrendered.

       If the last day on which a Security may be converted is a Legal Holiday
in a place where a Conversion Agent is located, the Security may be surrendered
to that Conversion Agent on the next succeeding day that it is not a Legal
Holiday.

       SECTION 11.03. FRACTIONAL SHARES. The Company will not issue a fractional
share of Common Stock upon conversion of a Security. Instead the Company will
deliver Cash for the current market value of the fractional share. The current
market value of a fractional share shall be determined to the nearest 1/10,000th
of a share by multiplying the last reported sale price (determined as set forth
in the definition of Current Market Price) on the last Trading Day prior to


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<PAGE>   63



the Conversion Date of a full share by the fractional amount and rounding the
product to the nearest whole cent.

       SECTION 11.04. TAXES ON CONVERSION. If a Holder converts a Security, the
Company shall pay any documentary, stamp or similar issue or transfer tax due on
the issue of shares of Common Stock upon the conversion. However, the Holder
shall pay any such tax which is due because the Holder requests the shares to be
issued in a name other than the Holder's name. The Conversion Agent may refuse
to deliver the certificates representing the Common Stock being issued in a name
other than the Holder's name until the Conversion Agent receives a sum
sufficient to pay any tax which will be due because the shares are to be issued
in a name other than the Holder's name. Nothing herein shall preclude any tax
withholding required by law or regulations.

       SECTION 11.05. COMPANY TO PROVIDE STOCK. The Company shall, prior to
issuance of any Securities hereunder, and from time to time as may be necessary,
reserve out of its authorized but unissued Common Stock a sufficient number of
shares of Common Stock to permit the conversion of the Securities.

       All shares of Common Stock delivered upon conversion of the Securities
shall be newly issued shares or treasury shares, shall be duly and validly
issued and fully paid and nonassessable and shall be free from preemptive rights
and free of any lien or adverse claim.

       The Company will endeavor promptly to comply with all Federal and state
securities laws regulating the order and delivery of shares of Common Stock upon
conversion of Securities, if any, and will endeavor promptly, if permitted by
the rules of such exchange, over-the-counter market or other market, to list or
cause to have quoted such shares of Common Stock on each national securities
exchange or in the over-the-counter market or such other market on which the
Common Stock is then listed or quoted.

       SECTION 11.06. ADJUSTMENT FOR CHANGE IN CAPITAL STOCK. In case the
Company shall (i) pay a dividend, or make a distribution, in shares of its
Common Stock, on its Common Stock, (ii) subdivide its outstanding Common Stock
into a greater number of shares, or (iii) combine its outstanding Common Stock
into a smaller number of shares, the Conversion Rate in effect immediately prior
thereto shall be adjusted so that the holder of any Security thereafter
surrendered for conversion shall be entitled to receive the number of shares of
Common Stock which such Holder would have owned or have been entitled to receive
after the happening of any of the events described above had such Security been
converted immediately prior to the happening of such event. If any dividend or
distribution of the type described in clause (i) above is not so paid or made,
the Conversion Rate shall again be adjusted to the Conversion Rate which would
then be in effect if such dividend or distribution had not been declared. An
adjustment made pursuant to this Section 11.06 shall become effective
immediately after the record date in the case of a dividend and shall become
effective immediately after the effective date in the case of subdivision or
combination.



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<PAGE>   64

        SECTION 11.07. ADJUSTMENT FOR RIGHTS ISSUE. In case the Company shall
issue rights or warrants to all holders of its Common Stock entitling them (for
a period expiring within 45 days after the record date mentioned below) to
subscribe for or purchase Common Stock at a price per share less than the
Current Market Price per share of Common Stock at the record date for the
determination of stockholders entitled to receive such rights or warrants, the
Conversion Rate in effect immediately prior thereto shall be adjusted so that
the same shall equal the Conversion Rate determined by multiplying the
Conversion Rate in effect immediately prior to the date of issuance of such
rights or warrants by a fraction of which the numerator shall be the number of
shares of Common Stock outstanding on the date of issuance of such rights or
warrants plus the number of additional shares of Common Stock offered for
subscription or purchase, and of which the denominator shall be the number of
shares of Common Stock outstanding on the date of issuance of such rights or
warrants plus the number of shares which the aggregate offering price of the
total number of shares so offered would purchase at such Current Market Price.
Such adjustment shall be made successively whenever any such rights or warrants
are issued, and shall become effective immediately after the opening of business
on the day following the record date for the determination of the stockholders
entitled to receive such rights or warrants. To the extent that shares of Common
Stock are not delivered after the expiration of such rights or warrants, the
Conversion Rate shall be readjusted to the Conversion Rate which would then be
in effect had the adjustments made upon the issuance of such rights or warrants
been made on the basis of delivery of only the number of shares of Common Stock
actually delivered. If such rights or warrants are not so issued, the Conversion
Rate shall again be adjusted to be the Conversion Rate which would then be in
effect if such record date for the determination of stockholders entitled to
receive such rights or warrants had not been fixed. In determining whether any
rights or warrants entitle the holders to subscribe for or purchase shares of
Common Stock at less than such Current Market Price, and in determining the
aggregate offering price of such shares of Common Stock, there shall be taken
into account any consideration received by the Company for such rights or
warrants, the value of such consideration, if other than cash, to be determined
by the Board of Directors.

        SECTION 11.08. ADJUSTMENT FOR OTHER DISTRIBUTIONS.

       (a) In case the Company shall distribute to all holders of its Common
Stock (excluding any distribution in connection with the liquidation,
dissolution or winding up of the Company, whether voluntary or involuntary) any
shares of any class of capital stock of the Company (other than Common Stock) or
evidences of its indebtedness or assets (other than cash) or rights or warrants
to subscribe for or purchase any of its securities (excluding those referred to
in Section 11.07 hereof) (any of the foregoing hereinafter in this Section
11.08(a) called the "Distributed Securities"), then, the Conversion Rate shall
be adjusted so that the same shall equal the Conversion Rate determined by
multiplying the Conversion Rate in effect immediately prior to the date of such
distribution by a fraction of which the numerator shall be the Current Market
Price per share of the Common Stock on the record date mentioned below, and the
denominator shall be the Current Market Price per share of the Common Stock on
such record date less the fair market value on such record date (as determined
by the Board of Directors of the Company, whose determination shall be
conclusive, and described in a certificate filed with the Trustee) of the
Distributed Securities so distributed applicable to one share of Common Stock.
Such adjustment shall become effective immediately 


                                      -58-


<PAGE>   65

after the record date for the determination of stockholders entitled to receive
such distribution. Notwithstanding the foregoing, in the event the then fair
market value (as so determined) of the portion of the Distributed Securities so
distributed applicable to one share of Common Stock is equal to or greater than
the Current Market Price of the Common Stock on the record date, in lieu of the
foregoing adjustment, adequate provision shall be made so that each
Securityholder shall have the right to receive upon conversion the amount of
Distributed Securities such Holder would have received had such Holder converted
each Security on such record date. In the event that such distribution is not so
paid or made, the Conversion Rate shall again be adjusted to the Conversion Rate
which would then be in effect if such distribution had not been declared. If the
Board of Directors determines the fair market value of any distribution for
purposes of this Section 11.08(a) by reference to the actual or when issued
trading market for any securities, it must in doing so consider the prices in
such market over the same period used in computing the Current Market Price of
the Common Stock.

       Notwithstanding the foregoing provisions of this Section 11.08(a), no
adjustment shall be made thereunder for any distribution of Distributed
Securities if the Company makes proper provision so that each Holder of a
Security who converts such Security (or any portion thereof) after the record
date for such distribution shall be entitled to receive upon such conversion, in
addition to the shares of Common Stock issuable upon such conversion, the amount
and kind of Distributed Securities that such Holder would have been entitled to
receive if such Holder had, immediately prior to such record date, converted
such Security for Common Stock; provided that, with respect to any Distributed
Securities that are convertible, exchangeable or exercisable, the foregoing
provision shall only apply to the extent (and so long as) the Distributed
Securities receivable upon conversion of such Security would be convertible,
exchangeable or exercisable, as applicable, without any loss of rights or
privileges for a period of at least 60 days following conversion of such
Security.

       (b) In case the Company shall, by dividend or otherwise, distribute to
all holders of its Common Stock cash (excluding (x) any quarterly cash dividend
on the Common Stock to the extent the aggregate cash dividend per share of
Common Stock in any fiscal quarter does not exceed the greater of (A) the amount
per share of Common Stock of the next preceding quarterly cash dividend on the
Common Stock to the extent such preceding quarterly dividend did not require any
adjustment of the Conversion Rate pursuant to this Section 11.08(b) (as adjusted
to reflect subdivisions or combinations of the Common Stock), and (B) 3.75% of
the average of the last reported sales prices of the Common Stock (determined as
provided in the definition of Current Market Price) during the ten Trading Days
next preceding the date of declaration of such dividend and (y) any dividend or
distribution in connection with the liquidation, dissolution or winding up of
the Company, whether voluntary or involuntary), then, in such case, unless the
Company elects to reserve such cash for distribution to the holders of the
Securities upon the conversion of the Securities so that any such holder
converting Securities will receive upon such conversion in addition to the
shares of Common Stock to which such holder is entitled, the amount of cash
which such holder would have received if such holder had, immediately prior to
the record date for such distribution of cash, converted its Securities for
Common Stock, the Conversion Rate shall be increased so that the same shall
equal the Conversion Rate determined by multiplying the 


                                      -59-


<PAGE>   66

Conversion Rate in effect immediately prior to the record date by a fraction of
which the numerator shall be such Current Market Price of the Common Stock and
the denominator shall be the Current Market Price of the Common Stock on the
record date less the amount of cash so distributed (and not excluded as provided
above) applicable to one share of Common Stock, such increase to be effective
immediately prior to the opening of business on the day following the record
date; provided, however, that in the event the portion of the cash so
distributed applicable to one share of Common Stock is equal to or greater than
the Current Market Price of the Common Stock on the record date, in lieu of the
foregoing adjustment, adequate provision shall be made so that each
Securityholder shall have the right to receive upon conversion the amount of
cash such Holder would have received had such Holder converted each Security on
the record date. If such dividend or distribution is not so paid or made, the
Conversion Rate shall again be adjusted to be the Conversion Rate which would
then be in effect if such dividend or distribution had not been declared. If any
adjustment is required to be made as set forth in this Section 11.08(b) as a
result of a distribution that is a quarterly dividend, such adjustment shall be
based upon the amount by which such distribution exceeds the amount of the
quarterly cash dividend permitted to be excluded pursuant hereto. If an
adjustment is required to be made as set forth in this Section 11.08(b) above as
a result of a distribution that is not a quarterly dividend, such adjustment
shall be based upon the full amount of the distribution.

       (c) In case a tender or exchange offer made by the Company or any
Subsidiary of the Company for all or any portion of the Common Stock shall
expire and such tender or exchange offer shall involve the payment by the
Company or such Subsidiary of consideration per share of Common Stock having a
fair market value (as determined by the Board of Directors, whose determination
shall be conclusive, and described in a resolution of such Board of Directors at
the last time (the "Expiration Time") tenders or exchanges may be made pursuant
to such tender or exchange offer (as it shall have been amended)) that exceeds
the Current Market Price of the Common Stock on the Trading Day next succeeding
the Expiration Time, the Conversion Rate shall be increased so that the same
shall equal the Conversion Rate determined by multiplying the Conversion Rate in
effect immediately prior to the Expiration Time by a fraction of which the
numerator shall be the sum of (x) the fair market value (determined as
aforesaid) of the aggregate consideration payable to stockholders based on the
acceptance (up to any maximum specified in the terms of the tender or exchange
offer) of all shares validly tendered or exchanged and not withdrawn as of the
Expiration Time (the shares deemed so accepted up to any such maximum, being
referred to as the "Purchased Shares") and (y) the product of the number of
shares of Common Stock outstanding (less any Purchased Shares) on the Expiration
Time and the Current Market Price of the Common Stock on the Trading Day next
succeeding the Expiration Time, and the denominator shall be the number of
shares of Common Stock outstanding (including any tendered or exchanged shares)
on the Expiration Time multiplied by the Current Market Price of the Common
Stock on the Trading Day next succeeding the Expiration Time, such increase to
become effective immediately prior to the opening of business on the day
following the Expiration Time. In the event that the Company is obligated to
purchase shares pursuant to any such tender or exchange offer, but the Company
is permanently prevented by applicable law from effecting any such purchases or
all such purchases are rescinded, the Conversion Rate shall again be adjusted to

                                      -60-

<PAGE>   67

be the Conversion Rate which would then be effect if such tender or exchange
offer had not been made.

        (d) In case of a tender or exchange offer by a Person other than the
Company or any Subsidiary for an amount which increases the offeror's ownership
of Common Stock to more than 25% of the Common Stock outstanding and shall
involve the payment by such Person of consideration per share of Common Stock
having a fair market value (as determined by the Board of Directors, whose
determination shall be conclusive, and described in a resolution of the Board of
Directors at the last time (the "Tender Expiration Time") tenders or exchanges
may be made pursuant to such tender or exchange offer (as it shall have been
amended)) at the Tender Expiration Time that exceeds the Current Market Price of
the Common Stock on the Trading Day next succeeding the Tender Expiration Time,
and in which, as of the Tender Expiration Time the Board of Directors is not
recommending rejection of the offer, the Conversion Rate shall be increased so
that the same shall equal the Conversion Rate determined by multiplying the
Conversion Rate in effect immediately prior to the Tender Expiration Time by a
fraction of which the numerator shall be the number of shares of Common Stock
outstanding (including any tendered or exchanged shares) on the Tender
Expiration Time multiplied by the Current Market Price of the Common Stock on
the Trading Day next succeeding the Tender Expiration Time and the denominator
shall be the sum of (x) the fair market value (determined as aforesaid) of the
aggregate consideration payable to stockholders based on the acceptance (up to
an maximum specified in the terms of the tender or exchanged offer) of all
shares validly tendered or exchanged and not withdrawn as of the Tender
Expiration Time (the shares deemed so accepted, up to any such maximum, being
referred to as the "Tender Purchased Shares") and (y) the product of the number
of shares of Common Stock outstanding (less any Tender Purchased Shares) on the
Tender Expiration Time and the Current Market Price of the Common Stock on the
Trading Day next succeeding the Tender Expiration Time, such reduction to become
effective immediately prior to the opening of business on the day following the
Tender Expiration Time. In the event that such Person is obligated to purchase
shares pursuant to any such tender or exchange offer, but such Person is
permanently prevented by applicable law from effecting any such purchases or all
such purchases are rescinded, the Conversion Rate shall again be adjusted to be
the Conversion Rate which would then be in effect if such tender or exchange
offer had not been made. Notwithstanding the foregoing, the adjustment described
in this Section 11.08(d) shall not be made if, as of the Tender Expiration Time,
the offering documents with respect to such offer disclose a plan or intention
to cause the Company to engage in any transaction described in Article 5.

        SECTION 11.09. WHEN ADJUSTMENT MAY BE DEFERRED. No adjustment in the
Conversion Rate need be made unless the adjustment would require an increase or
decrease of at least 1% in the Conversion Rate. Any adjustments that are made
shall be carried forward and taken into account any subsequent adjustment.

        All calculations under this Article 11 shall be made to the nearest cent
or to the nearest 1/10,000th of a share, as the case may be.


                                      -61-


<PAGE>   68

        SECTION 11.10. WHEN NO ADJUSTMENT REQUIRED. No adjustment need be made
for rights to purchase Common Stock pursuant to a Company plan for reinvestment
of dividends or interest.

        No adjustment need be made for a change in the par value or no par value
of the Common Stock.

        To the extent the Securities become convertible into cash, assets,
property or securities (other than capital stock of the Company), no adjustment
need be made thereafter as to the cash, assets, property or such securities.
Interest will not accrue on the cash.

        SECTION 11.11. NOTICE OF ADJUSTMENT. Whenever the Conversion Rate is
adjusted, the Company shall promptly mail to Holders a notice of the adjustment.
The Company shall file with the Trustee and the Conversion Agent such notice.
The certificate shall, absent manifest error, be conclusive evidence that the
adjustment is correct. Neither the Trustee nor any Conversion Agent shall be
under any duty or responsibility with respect to any such certificate except to
exhibit the same to any Holder desiring inspection thereof.

        SECTION 11.12. VOLUNTARY INCREASE. The Company may make such increases
in the Conversion Rate, in addition to those required by Sections 11.06, 11.07
and 11.08, as the Board of Directors considers to be advisable to avoid or
diminish any income tax to holders of Common Stock or rights to purchase Common
Stock resulting from any dividend or distribution of stock (or rights to acquire
stock) or from any event treated as such for income tax purposes. To the extent
permitted by applicable law, the Company may from time to time increase the
Conversion Rate by any amount for any period of time if the period is at least
20 days, the increase is irrevocable during the period and the Board of
Directors shall have made a determination that such increase would be in the
best interests of the Company, which determination shall be conclusive. Whenever
the Conversion Rate is so increased, the Company shall mail to Holders and file
with the Trustee and the Conversion Agent a notice of such increase. Such
Company shall mail the notice at least 15 days before the date the increased
Conversion Rate takes effect. The notice shall state the increased Conversion
Rate and the period it will be in effect.

        SECTION 11.13. NOTICE OF CERTAIN TRANSACTIONS. If:

             (1) the Company makes any distribution or dividend that would
require an adjustment in the Conversion Rate pursuant to Section 11.06, 11.07 or
11.08; or

             (2) the Company takes any action that would require a supplemental
indenture pursuant to Section 11.14; or

             (3) there is a liquidation, dissolution or winding up of the
Company;

then the Company shall mail to Holders and file with the Trustee and the
Conversion Agent a notice stating the proposed record date for a dividend or
distribution or the proposed effective date of a subdivision, combination,
reclassification, consolidation, merger, sale, transfer, dissolution,




                                      -62-

<PAGE>   69





liquidation or winding-up. The Company shall file and mail the notice at least
15 days before such date. Failure to file or mail the notice or any defect in it
shall not affect the validity of the transaction.

        SECTION 11.14. EFFECT OF RECLASSIFICATION, CONSOLIDATION, MERGER OR
SALE. If any of the following events occur, namely (i) any reclassification or
change of outstanding shares of Common Stock (other than a change in par value,
or from par value to no par value, or from no par value to par value, or as a
result of a subdivision or combination), (ii) any consolidation, merger or
combination of the Company with another corporation as a result of which holders
of Common Stock shall be entitled to receive stock, securities or other property
or assets (including cash) with respect to or in exchange for such Common Stock,
or (iii) any sale or conveyance of the properties and assets of the Company as,
or substantially as, an entirety to any other corporation as a result of which
holders of Common Stock shall be entitled to receive stock, securities or other
property or assets (including cash) with respect to or in exchange for such
Common Stock, then the Company or the successor or purchasing corporation, as
the case may be, shall execute with the Trustee a supplemental indenture,
providing that each Security shall be convertible into the kind and amount of
shares of stock and other securities or property or assets (including cash)
receivable upon such reclassification, change, consolidation, merger,
combination, sale or conveyance by a holder of a number of shares of Common
Stock issuable upon conversion of such Securities immediately prior to such
reclassification, change, consolidation, merger, combination, sale or
conveyance. Such supplemental indenture shall provide for adjustments which
shall be as nearly equivalent as may be practicable to the adjustments provided
for in this Article.

       The Company shall cause notice of the execution of such supplemental
indenture to be mailed to each Holder at such Holder's address appearing on the
Security register provided for in Section 2.03 of this Indenture.

       The above provisions of this Section shall similarly apply to successive
reclassifications, consolidations, mergers, combinations, and sales.

       If this Section 11.14 applies, neither Section 11.06, 11.07 nor 11.08
applies.

       SECTION 11.15. COMPANY DETERMINATION FINAL. Any determination that the
Company or the Board of Directors must make pursuant to Section 11.03, 11.06,
11.07, 11.08, 11.09, 11.10, 11.14 or 11.17 is conclusive.

       SECTION 11.16. TRUSTEE'S ADJUSTMENT DISCLAIMER. The Trustee has no duty
to determine when an adjustment under this Article 11 should be made, how it
should be made or what it should be. The Trustee has no duty to determine
whether a supplemental indenture under Section 11.14 need be entered into or
whether any provisions of any supplemental indenture are correct. The Trustee
shall not be accountable for and makes no representation as to the validity or
value of any securities or assets issued upon conversion of Securities. The
Trustee shall not be responsible for the Company's failure to comply with this
Article 11, and shall not be deemed to have knowledge of any adjustment unless
and until it shall have received a notice of adjustment pursuant to 

                                      -63-



<PAGE>   70

Section 11.11. Each Conversion Agent shall have the same protection under this
Section 11.16 as the Trustee.

       SECTION 11.17. SIMULTANEOUS ADJUSTMENTS. In the event that this Article
11 requires adjustments to the Conversion Rate under more than one of Sections
11.06, 11.07, 11.08(a) or 11.08(b), and the record dates for the distributions
giving rise to such adjustments shall occur on the same date, then such
adjustments shall be made by applying, first, the provisions of Section
11.08(a), second, the provisions of Section 11.08(b), third the provisions of
Section 11.06 and, fourth, the provisions of Section 11.07.

       SECTION 11.18. SUCCESSIVE ADJUSTMENTS. After an adjustment to the
Conversion Rate under this Article 11, any subsequent event requiring an
adjustment under this Article 11 shall cause an adjustment to the Conversion
Rate as so adjusted.

       SECTION 11.19. RIGHTS ISSUED IN RESPECT OF COMMON STOCK ISSUED UPON
CONVERSION. Rights or warrants distributed by the Company to all holders of
Common Stock entitling the holders thereof to subscribe for or purchase shares
of the Company's capital stock (either initially or under certain
circumstances), which rights or warrants, until the occurrence of a specified
event or events ("Trigger Event"):

                      (i) are deemed to be transferred with such shares of
Common Stock,

                      (ii) are not exercisable, and

                      (iii) are also issued in respect of future issuances of
Common Stock,

shall not be deemed distributed for purposes of Section 11.08(a) until the
occurrence of the earliest Trigger Event. In addition, in the event of any
distribution of rights or warrants, or any Trigger Event with respect thereto,
that shall have resulted in an adjustment to the Conversion Rate under Section
11.08(a), (1) in the case of any such rights or warrants which shall all have
been redeemed or repurchased without exercise by any holders thereof, the
Conversion Rate shall be readjusted upon such final redemption or repurchase to
give effect to such distribution or Trigger Event, as the case may be, as
thought it were a cash distribution, equal to the per share redemption or
repurchase price received by a holder of Common Stock with respect to such
rights or warrants (assuming such holder had retained such rights or warrants),
made to all holders of Common Stock as of the date of such redemption or
repurchase, and (2) in the case of any such rights or warrants all of which
shall have expired without exercise by any holder thereof, the Conversion Rate
shall be readjusted as if such issuance had not occurred.

       SECTION 11.20. GENERAL CONSIDERATIONS. Whenever successive adjustments to
the Conversion Rate are called for pursuant to this Article 11, such adjustments
shall be made to the Current Market Price as may be necessary or appropriate to
effectuate the intent of this Article 11 and to avoid unjust or inequitable
results as determined in good faith by the Board of Directors.

                                      -64-
<PAGE>   71

                                   ARTICLE 12

                                  MISCELLANEOUS


       SECTION 12.01. TRUST INDENTURE ACT. This Indenture is hereby made subject
to, and shall be governed by, the provisions of the TIA required to be part of
and to govern indentures qualified under the TIA; provided, however that this
Section 12.01 shall not require this Indenture or the Trustee to be qualified
under the TIA prior to the time such qualification is in fact required under the
terms of the TIA, nor shall it constitute any admission or acknowledgment by any
party that any such qualification is required prior to the time such
qualification is in fact required under the terms of the TIA. If any provision
hereof limits, qualifies or conflicts with another provision hereof which is
required to be included in an indenture qualified under the TIA, such required
provision shall control.

       SECTION 12.02. NOTICES. Any request, demand, authorization, notice,
waiver, consent or communication shall be in writing and delivered in Person or
mailed by first class mail, postage prepaid, addressed as follows or transmitted
by facsimile transmission (confirmed by overnight courier) to the following
facsimile numbers:

       if to the Company:

             Networks Associates, Inc.
             2805 Bowers Avenue
             Santa Clara, California 95051
             Attn: Prabhat K. Goyal

             Telephone Number: (408) 988-3832
             Facsimile Number: (408) 346-3175

       if to the Trustee:

             State Street Bank and Trust Company of California, N.A.
             633 West 5th Street
             12th Floor
             Los Angeles, California  90071
             (Attention: Networks Associates, Inc.,
                Zero Coupon Convertible Subordinated
             Debentures due 2018)

             Telephone Number: (213) 362-7338
             Facsimile Number: (213) 362-7357

       The Company or the Trustee by notice to the other may designate
additional or different addresses for subsequent notices or communications.


                                      -65-


<PAGE>   72

       Any notice or communication given to a Securityholder shall be mailed to
the Securityholder, by first class mail, postage prepaid, at the
Securityholder's address as it appears on the registration books of the
Registrar and shall be sufficiently given if so mailed within the time
prescribed.

       Failure to mail a notice or communication to a Securityholder or any
defect in it shall not affect its sufficiency with respect to other Holders. If
a notice or communication is mailed in the manner provided above, it is duly
given, whether or not received by the addressee.

       If the Company mails a notice or communication to the Holders, it shall
mail a copy to the Trustee and each Registrar, Paying Agent, Conversion Agent or
co-registrar.

       SECTION 12.03. COMMUNICATION BY HOLDERS WITH OTHER HOLDERS. Holders may
communicate pursuant to TIA Section 312(b) with other Holders with respect to
their rights under this Indenture or the Securities. The Company, the Trustee,
the Registrar, the Paying Agent, the Conversion Agent and anyone else shall have
the protection of TIA Section 312(c).

       SECTION 12.04. CERTIFICATE AND OPINION AS TO CONDITIONS PRECEDENT. Upon
any request or application by the Company to the Trustee to take any action
under this Indenture, the Company shall furnish to the Trustee:

             (1) an Officers' Certificate stating that, in the opinion of the
signers, all conditions precedent, if any, provided for in this Indenture
relating to the proposed action have been complied with; and

             (2) an Opinion of Counsel stating that, in the opinion of such
counsel, all such conditions precedent have been complied with.

       SECTION 12.05. STATEMENTS REQUIRED IN CERTIFICATE OR OPINION. Each
Officers' Certificate or Opinion of Counsel with respect to compliance with a
covenant or condition provided for in this Indenture shall include:

             (1) a statement that each individual making such Officers'
Certificate or Opinion of Counsel has read such covenant or condition;

             (2) a brief statement as to the nature and scope of the examination
or investigation upon which the statements or opinions contained in such
Officers' Certificate or Opinion of Counsel are based;

             (3) a statement that, in the opinion of each such individual, he or
she has made such examination or investigation as is necessary to enable him or
her to express an informed opinion as to whether or not such covenant or
condition has been complied with; and

             (4) a statement that, in the opinion of such individual, such
covenant or condition has been complied with.



                                      -66-

<PAGE>   73

       SECTION 12.06. SEPARABILITY CLAUSE. In case any provision in this
Indenture or in the Securities shall be invalid, illegal or unenforceable, the
validity, legality and enforceability of the remaining provisions shall not in
any way be affected or impaired thereby.

       SECTION 12.07. RULES BY TRUSTEE, PAYING AGENT, CONVERSION AGENT AND
REGISTRAR. The Trustee may make reasonable rules for action by or a meeting of
Holders. The Registrar, Conversion Agent and the Paying Agent may make
reasonable rules for their functions.

       SECTION 12.08. GOVERNING LAW. THE LAWS OF THE STATE OF NEW YORK SHALL
GOVERN THIS INDENTURE AND THE SECURITIES, WITHOUT REGARD TO THE PRINCIPLES OF
CONFLICTS OF LAWS.

       SECTION 12.09. NO RECOURSE AGAINST OTHERS. A director, officer, employee
or stockholder, as such, of the Company shall not have any liability for any
obligations of the Company under the Securities or this Indenture or for any
claim based on, in respect of or by reason of such obligations or their
creation. By accepting a Security, each Securityholder shall waive and release
all such liability. The waiver and release shall be part of the consideration
for the issue of the Securities.

       SECTION 12.10. SUCCESSORS. All agreements of the Company in this
Indenture and the Securities shall bind its successor. All agreements of the
Trustee in this Indenture shall bind its successor.

       SECTION 12.11. MULTIPLE ORIGINALS. The parties may sign any number of
copies of this Indenture. Each signed copy shall be an original, but all of them
together represent the same agreement. One signed copy is enough to prove this
Indenture.


                                      -67-

<PAGE>   74



       IN WITNESS WHEREOF, the undersigned, being duly authorized, has executed
this Indenture on behalf of the respective parties hereto as of the date first
written above.

                                    Networks Associates, Inc.


                                    By
                                       -----------------------------------------
                                       Title:



                                    State Street Bank and Trust Company of 
                                    California, N.A.



                                    By
                                       -----------------------------------------
                                       Authorized Signatory






                                      -68-

<PAGE>   75



                                    EXHIBIT A

                           [FORM OF FACE OF SECURITY]

FOR UNITED STATES FEDERAL INCOME TAX PURPOSES, THIS SECURITY BEARS ORIGINAL
ISSUE DISCOUNT. INFORMATION INCLUDING THE ISSUE PRICE, AMOUNT OF ORIGINAL ISSUE
DISCOUNT, THE ISSUE DATE, AND THE YIELD TO MATURITY WILL BE MADE AVAILABLE TO
HOLDERS UPON REQUEST TO PRABHAT K. GOYAL, CHIEF FINANCIAL OFFICER, AT (408)
988-3832.


                      [FORM OF LEGEND FOR GLOBAL SECURITY]

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE
DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), TO THE COMPANY OR ITS
AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT, AND ANY CERTIFICATE
ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS
REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO
CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF DTC) , ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR
OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER
HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.]

       THE SECURITY EVIDENCED HEREBY HAS NOT BEEN REGISTERED UNDER THE UNITED
STATES SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"), OR ANY STATE
SECURITIES LAWS, AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD WITHIN THE UNITED
STATES OR TO, OR FOR THE ACCOUNT OR BENEFIT OF, U.S. PERSONS EXCEPT AS SET FORTH
IN THE FOLLOWING SENTENCE. BY ITS ACQUISITION HEREOF, THE HOLDER (1) REPRESENTS
THAT (A) IT IS A "QUALIFIED INSTITUTIONAL BUYER" (AS DEFINED IN RULE 144A UNDER
THE SECURITIES ACT) OR (B) IT IS NOT A U.S. PERSON AND IS ACQUIRING THE SECURITY
EVIDENCED HEREBY IN AN OFFSHORE TRANSACTION; (2) AGREES THAT IT WILL NOT, PRIOR
TO EXPIRATION OF THE HOLDING PERIOD APPLICABLE TO SALES OF THE SECURITY
EVIDENCED HEREBY UNDER RULE 144(K) UNDER THE SECURITIES ACT (OR ANY SUCCESSOR
PROVISION), RESELL OR OTHERWISE TRANSFER THE SECURITY EVIDENCED HEREBY OR THE
COMMON STOCK ISSUABLE UPON CONVERSION OF SUCH SECURITY WITHIN THE UNITED STATES
OR TO, OR FOR THE ACCOUNT OR BENEFIT OF, U.S. PERSONS EXCEPT (A) TO NETWORKS
ASSOCIATES, INC. OR ANY SUBSIDIARY THEREOF, (B) TO A QUALIFIED INSTITUTIONAL
BUYER IN COMPLIANCE WITH RULE 144A UNDER THE SECURITIES ACT, (C) PURSUANT TO THE
EXEMPTION FROM REGISTRATION PROVIDED BY RULE 144 UNDER THE SECURITIES ACT (IF
AVAILABLE) OR (D) PURSUANT TO A REGISTRATION STATEMENT WHICH HAS BEEN DECLARED
EFFECTIVE UNDER THE SECURITIES ACT (AND WHICH CONTINUES TO BE EFFECTIVE AT THE
TIME OF SUCH TRANSFER); (3) PRIOR TO SUCH TRANSFER (OTHER THAN A TRANSFER
PURSUANT TO CLAUSE 2(D) ABOVE), IT WILL FURNISH TO STATE STREET BANK AND TRUST
COMPANY OF CALIFORNIA, N.A., AS TRUSTEE (OR A SUCCESSOR TRUSTEE, AS APPLICABLE),
SUCH CERTIFICATIONS, LEGAL OPINIONS OR OTHER INFORMATION AS THE TRUSTEE MAY
REASONABLY REQUIRE TO CONFIRM THAT SUCH 



<PAGE>   76



TRANSFER IS BEING MADE PURSUANT TO AN EXEMPTION FROM, OR IN A TRANSACTION NOT
SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND (4) AGREES
THAT IT WILL DELIVER TO EACH PERSON TO WHOM THE SECURITY EVIDENCED HEREBY IS
TRANSFERRED A NOTICE SUBSTANTIALLY TO THE EFFECT OF THIS LEGEND. IN CONNECTION
WITH ANY TRANSFER OF THE SECURITY EVIDENCED HEREBY PRIOR TO THE EXPIRATION OF
THE HOLDING PERIOD APPLICABLE TO SALES OF THE SECURITY EVIDENCED HEREBY UNDER
RULE 144(K) UNDER THE SECURITIES ACT (OR ANY SUCCESSOR PROVISION), THE HOLDER
MUST CHECK THE APPROPRIATE BOX SET FORTH ON THE REVERSE HEREOF RELATING TO THE
MANNER OF SUCH TRANSFER AND SUBMIT THIS CERTIFICATE TO STATE STREET BANK AND
TRUST COMPANY OF CALIFORNIA, N.A., AS TRUSTEE (OR A SUCCESSOR TRUSTEE, AS
APPLICABLE). IF THE PROPOSED TRANSFEREE IS A PURCHASER WHO IS NOT A U.S. PERSON,
THE HOLDER MUST, PRIOR TO SUCH TRANSFER, FURNISH TO STATE STREET BANK AND TRUST
COMPANY OF CALIFORNIA, N.A., AS TRUSTEE (OR A SUCCESSOR TRUSTEE, AS APPLICABLE),
SUCH CERTIFICATIONS, LEGAL OPINIONS OR OTHER INFORMATION AS IT MAY REASONABLY
REQUIRE TO CONFIRM THAT SUCH TRANSFER IS BEING MADE PURSUANT TO AN EXEMPTION
FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE
SECURITIES ACT. THIS LEGEND WILL BE REMOVED UPON THE EARLIER OF THE TRANSFER OF
THE SECURITY EVIDENCED HEREBY PURSUANT TO CLAUSE 2(D) ABOVE OR UPON ANY TRANSFER
OF THE SECURITY EVIDENCED HEREBY UNDER RULE 144(K) UNDER THE SECURITIES ACT (OR
ANY SUCCESSOR PROVISION).


                                       A-2

<PAGE>   77



                            NETWORKS ASSOCIATES, INC.

             ZERO COUPON CONVERTIBLE SUBORDINATED DEBENTURE DUE 2018

No.
Issue Date: February 13, 1998                   Original Issue Discount: $608.94
Issue Price:  $391.06                         (for each $1,000 Principal Amount)
(for each $1,000 Principal Amount)
                                                                 CUSIP: ________

       Networks Associates, Inc., a Delaware corporation, promises to pay to   
or registered assigns, on February 13, 2018 [the Principal Amount of          
Dollars ($         )].(1)

       This Security shall not bear interest except as specified on the other
side of this Security. Original Issue Discount will accrue as specified on the
other side of this Security. This Security is convertible as specified on the
other side of this Security.

       Additional provisions of this Security are set forth on the other side of
this Security.

       IN WITNESS WHEREOF, Networks Associates, Inc. has caused this instrument
to be duly executed under its corporate seal.

                            NETWORKS ASSOCIATES, INC.

                            By:
                                ------------------------------------------------
                                     Title:

                            By:
                                ------------------------------------------------
                                     Title:
[SEAL]

Dated: ________

TRUSTEE'S CERTIFICATE OF AUTHENTICATION

STATE STREET BANK AND TRUST COMPANY OF CALIFORNIA, N.A., as Trustee, certifies
that this is one of the Securities referred to in the within-mentioned
Indenture.

By
- ------------------------------------
       Authorized Signatory

- --------

       (1)  The global Security will read instead: "The Principal Amount then 
shown on Schedule A hereto."


                                       A-3

<PAGE>   78



                       [FORM OF REVERSE SIDE OF SECURITY]

                            NETWORKS ASSOCIATES, INC.

             ZERO COUPON CONVERTIBLE SUBORDINATED DEBENTURE DUE 2018

1. INTEREST

       This Security shall not bear interest, except that if the Principal
hereof or any portion of such Principal is not paid when due (whether upon
acceleration pursuant to Section 6.02 of the Indenture, upon the date set for
payment of the Redemption Price pursuant to paragraph 5 hereof, upon the date
set for payment of a Purchase Price or Fundamental Change Redemption Price
pursuant to paragraph 6 hereof or upon the Stated Maturity of this Security),
then in each such case the overdue amount shall bear interest at the rate of
4.75% per annum, compounded semiannually (to the extent that the payment of such
interest shall be legally enforceable), which interest shall accrue from the
date such overdue amount was due to the date payment of such amount, including
interest thereon, has been made or duly provided for. All such interest shall be
payable on demand. The accrual of such interest on overdue amounts shall be in
lieu of, and not in addition to, the continued accrual of Original Issue
Discount.

       The Original Issue Discount (the difference between the Issue Price and
the Principal Amount of the Security) in the period during which a Security
remains outstanding, shall accrue at 4.75% per annum, on a semiannual bond
equivalent basis using a 360-day year composed of twelve 30-day months,
commencing on the Issue Date of this Security.

2. METHOD OF PAYMENT

       Subject to the terms and conditions of the Indenture, the Company will
make payments in respect of the Securities to the Persons who are registered
Holders of Securities at the close of business on the Business Day preceding the
Redemption Date or Stated Maturity, as the case may be, or at the close of
business on a Purchase Date or Fundamental Change Redemption Date, as the case
may be. Holders must surrender Securities to the Paying Agent to collect such
payments in respect of the Securities. The Company will pay cash amounts in
money of the United States that at the time of payment is legal tender for
payment of public and private debts. However, the Company may make such cash
payments by check payable in such money.

3. PAYING AGENT, CONVERSION AGENT AND REGISTRAR

       Initially, State Street Bank and Trust Company of California, N.A., a
national banking association organized under the laws of the United States of
America (the "Trustee"), will act as Paying Agent, Conversion Agent and
Registrar. The Company may appoint and change any Paying Agent, Conversion
Agent, Registrar or co-registrar without notice, other than notice to the
Trustee. The Company or any of its Subsidiaries or any of their Affiliates may
act as Paying Agent, Conversion Agent, Registrar or co-registrar.



                                       A-4

<PAGE>   79



4. INDENTURE

       The Company issued the Securities under an Indenture (the "Indenture"),
dated as of February 13, 1998, between the Company and the Trustee. Capitalized
terms used herein and not defined herein have the meanings ascribed thereto in
the Indenture. The Securities are subject to all such terms, and Holders are
referred to the Indenture for a statement of those terms.

       The Securities are general unsecured obligations of the Company limited
to $885,500,000 aggregate Principal Amount (subject to Sections 2.02 and 2.07 of
the Indenture). The Indenture does not limit other indebtedness of the Company,
secured or unsecured, including Senior Indebtedness of the Company.

5. REDEMPTION AT THE OPTION OF THE COMPANY

       No sinking fund is provided for the Securities. The Securities are
redeemable as a whole, or from time to time in part, at any time at the option
of the Company at the Redemption Prices set forth below, provided that the
Securities are not redeemable prior to February 13, 2003.

       The table below shows Redemption Prices of a Security per $1,000
Principal Amount on the dates shown below and at Stated Maturity, which prices
reflect accrued Original Issue Discount calculated to each such date. The
Redemption Price of a Security redeemed between such dates would include an
additional amount reflecting the additional Original Issue Discount accrued
since the next preceding date in the table to the actual Redemption Date.
<TABLE>
<CAPTION>

                                                                 ACCRUED
                                                                 ORIGINAL
                                                                  ISSUE          REDEMPTION
                                                 SECURITY         DISCOUNT          PRICE
  REDEMPTION DATE                               ISSUE PRICE       AT 4.75%        (1) + (2)
  ---------------                               -----------       --------        ---------
<S>                                             <C>              <C>             <C>    
February 13, 2003...........................      $391.06          $103.46         $494.52
February 13, 2004...........................       391.06           127.23          518.29
February 13, 2005...........................       391.06           152.14          543.20
February 13, 2006...........................       391.06           178.25          569.31
February 13, 2007...........................       391.06           205.61          596.67
February 13, 2008...........................       391.06           234.29          625.35
February 13, 2009...........................       391.06           264.34          655.40
February 13, 2010...........................       391.06           295.85          686.91
February 13, 2011...........................       391.06           328.86          719.92
February 13, 2012...........................       391.06           363.46          754.52
February 13, 2013...........................       391.06           399.73          790.79
February 13, 2014...........................       391.06           437.74          828.80
February 13, 2015...........................       391.06           477.57          868.63
February 13, 2016...........................       391.06           519.32          910.38
February 13, 2017...........................       391.06           563.08          954.14
At maturity.................................       391.06           608.94        1,000.00
</TABLE>



                                       A-5

<PAGE>   80



6. PURCHASE BY THE COMPANY AT THE OPTION OF THE HOLDER; REDEMPTION AT THE OPTION
   OF THE HOLDER UPON A FUNDAMENTAL CHANGE

             (a) Subject to the terms and conditions of the Indenture, the
Company shall become obligated to purchase, at the option of the Holder, the
Securities held by such Holder on the following Purchase Dates and at the
following Purchase Prices per $1,000 Principal Amount, upon delivery of a
Purchase Notice containing the information set forth in the Indenture, from the
opening of business on the date that is 20 Business Days prior to such Purchase
Date until the close of business on such Purchase Date and upon delivery of the
Securities to the Paying Agent by the Holder as set forth in the Indenture. Such
Purchase Prices may be paid, at the option of the Company, in cash or by the
issuance and delivery of shares of Common Stock of the Company, or in any
combination thereof.

<TABLE>
<CAPTION>
PURCHASE DATE                                              PURCHASE PRICE
- -------------                                              --------------
<S>                                                        <C>    
February 13, 2003.......................................       $494.52
February 13, 2008.......................................        625.35
February 13, 2013.......................................        790.79
</TABLE>

Securities in denominations larger than $1,000 of Principal Amount may be
purchased in part, but only in multiples of $1,000 of Principal Amount.

             (b) At the option of the Holder and subject to the terms and
conditions of the Indenture, the Company shall become obligated to redeem the
Securities held by such Holder 45 days after the date of the Company's notice of
such Fundamental Change occurring on or prior to February 13, 2018 for a
Fundamental Change Redemption Price equal to the Issue Price plus accrued
Original Issue Discount to the Fundamental Change Redemption Date, which
Fundamental Change Redemption Price shall be paid in Cash. Securities in
denominations larger than $1,000 of Principal Amount may be redeemed in part in
connection with a Fundamental Change, but only in multiples of $1,000 of
Principal Amount.

             (c) Holders have the right to withdraw any Purchase Notice or
Fundamental Change Redemption Notice, as the case may be, by delivering to the
Paying Agent a written notice of withdrawal in accordance with the provisions of
the Indenture.

             (d) If Cash (and/or securities if permitted under the Indenture)
sufficient to pay a Purchase Price or Fundamental Change Redemption Price, as
the case may be, of all Securities or portions thereof to be purchased as of the
Purchase Date or the Fundamental Change Redemption Date, as the case may be, is
deposited with the Paying Agent on the Business Day following the Purchase Date
or the Fundamental Change Redemption Date, as the case may be, Original Issue
Discount ceases to accrue on such Securities (or portions thereof) on and after
such date, and the Holder thereof shall have no other rights as such (other than
the right to receive the Purchase Price or Fundamental Change Redemption Price,
as the case may be, upon surrender of such Security).


                                      A-6

<PAGE>   81

7. NOTICE OF REDEMPTION AT THE OPTION OF THE COMPANY

       Notice of redemption at the option of the Company will be mailed at least
30 days but not more than 60 days before the Redemption Date to each Holder of
Securities to be redeemed at the Holder's registered address. If money
sufficient to pay the Redemption Price of all Securities (or portions thereof)
to be redeemed on the Redemption Date is deposited with the Paying Agent prior
to or on the Redemption Date, on and after such date Original Issue Discount
ceases to accrue on such Securities or portions thereof. Securities in
denominations larger than $1,000 of Principal Amount may be redeemed in part but
only in multiples of $1,000 of Principal Amount.

8. SUBORDINATION

       The Securities are subordinated to all existing and future Senior
Indebtedness. To the extent provided in the Indenture, Senior Indebtedness must
be paid before the Securities may be paid. The Indenture does not limit the
present or future amount of Senior Indebtedness that the Company may have. The
Company agrees, and each Securityholder by accepting a Security agrees, to the
subordination and authorizes the Trustee to give it effect and appoints the
Trustee as attorney-in-fact for such purpose.

9. CONVERSION

       Subject to the next two succeeding sentences, a Holder of a Security may
convert this Security for Common Stock at any time after 90 days following the
Issue Date of the Securities and before the close of business on February 13,
2018. If this Security is called for redemption, the Holder may convert it at
any time before the close of the last Trading Day prior to the Redemption Date.
A Security in respect of which a Holder has delivered a notice of exercise of
the option to require the Company to purchase such Security or to redeem such
Security in the event of a Fundamental Change may be converted only if the
notice of exercise is withdrawn in accordance with the terms of the Indenture.

       The initial Conversion Rate is 5.692 shares of Common Stock per $1,000
Principal Amount, subject to adjustment in certain events described in the
Indenture. The Company will deliver Cash or a check in lieu of any fractional
share of Common Stock.

       To convert this Security a Holder must (1) complete and manually sign the
conversion notice on the back of this Security (or complete and manually sign a
facsimile of such notice) and deliver such notice to the Conversion Agent, (2)
surrender this Security to the Conversion Agent, (3) furnish appropriate
endorsements and transfer documents if required by the Conversion Agent, the
Company or the Trustee and (4) pay any transfer or similar tax, if required.

       A Holder may convert a portion of this Security if the Principal Amount
of such portion is $1,000 or a multiple of $1,000. No payment or adjustment will
be made for dividends on the Common Stock except as provided in the Indenture.
On conversion of this Security, that portion of accrued Original Issue Discount
attributable to the period from the Issue Date to the Conversion Date with
respect to the converted portion of this Security shall not be canceled,
extinguished or forfeited, but rather shall be deemed to be paid in full to the
Holder thereof through the delivery of the Common Stock (together 


                                      A-7
<PAGE>   82

with any cash payment in lieu of fractional shares) in exchange for the portion
of this Security being converted pursuant to the terms hereof.

10. CONVERSION ARRANGEMENT ON CALL FOR REDEMPTION

       Any Securities called for redemption, unless surrendered for conversion
before the close of business on the last Trading Day prior to the Redemption
Date, may be deemed to be purchased from the Holders of such Securities at an
amount not less than the Redemption Price, by one or more investment bankers or
other purchasers who may agree with the Company to purchase such Securities from
the Holders, to convert them for Common Stock and to make payment for such
Securities to the Trustee in trust for such Holders.

11. REGISTRATION RIGHTS

       The Holder of this Security and the Common Stock issuable upon conversion
thereof is entitled to the benefits of a Registration Rights Agreement (subject
to the provisions thereof), dated as of February 13, 1998, between the Company
and the Initial Purchaser.

12. DENOMINATIONS; TRANSFER; EXCHANGE

       The Securities are in registered form, without coupons, in denominations
of $1,000 of Principal Amount and multiples of $1,000. A Holder may transfer or
convert Securities in accordance with the Indenture. The Registrar may require a
Holder, among other things, to furnish appropriate endorsements and transfer
documents and to pay any taxes and fees required by law or permitted by the
Indenture. The Registrar need not transfer or exchange any Securities selected
for redemption (except, in the case of a Security to be redeemed in part, the
portion of the Security not to be redeemed) or any Securities in respect of
which a Purchase Notice or Fundamental Change Redemption Notice has been given
and not withdrawn (except, in the case of a Security to be purchased in part,
the portion of the Security not to be purchased) or any Securities for a period
of 15 days before a selection of Securities to be redeemed.

13. PERSONS DEEMED OWNERS

       The registered Holder of this Security may be treated as the owner of
this Security for all purposes.

14. UNCLAIMED MONEY OR SECURITIES

       The Trustee and the Paying Agent shall return to the Company upon written
request any money or securities held by them for the payment of any amount with
respect to the Securities that remains unclaimed for two years; provided,
however, that the Trustee or such Paying Agent, before being required to make
any such return, shall at the expense of the Company cause to be published once
in a newspaper of general circulation in The City of New York or mail to each
Holder notice that such money or securities remains unclaimed and that, after a
date specified therein, which shall not be less than 30 days from the date of
such publication or mailing, any unclaimed money or securities then remaining
will be returned to the Company. After return to the Company, Holders entitled
to the money 


                                      A-8

<PAGE>   83

or securities must look to the Company for payment as general
creditors unless an applicable abandoned property law designates another Person.

15. AMENDMENT; WAIVER

       Subject to certain exceptions set forth in the Indenture, (i) the
Indenture or the Securities may be amended with the written consent of the
Holders of at least a majority in aggregate Principal Amount of the Securities
at the time outstanding and (ii) certain Defaults and Events of Defaults may be
waived with the written consent of the Holders of a majority in aggregate
Principal Amount of the Securities at the time outstanding. Subject to certain
exceptions set forth in the Indenture, without the consent of any
Securityholder, the Company and the Trustee may amend the Indenture or the
Securities to cure any ambiguity, defect or inconsistency, or to comply with
Article 5 or Section 11.14 of the Indenture, to provide for uncertificated
Securities in addition to or in place of certificated Securities or to make any
change that does not adversely affect the rights of any Securityholder or to
comply with any requirement of the SEC in connection with the qualification of
the Indenture under the TIA.

16. DEFAULTS AND REMEDIES

       Under the Indenture, Events of Default include (i) default in payment of
the Principal Amount, Issue Price, accrued Original Issue Discount, accrued
Liquidated Damages, if any, Redemption Price, Purchase Price or Fundamental
Change Redemption Price, as the case may be, in respect of the Securities when
the same becomes due and payable, provided that in the case of any failure to
pay Liquidated Damages, such failure to pay continues for a period of 30 days;
(ii) failure by the Company to comply with other agreements in the Indenture or
the Securities, subject to notice and lapse of time; and (iii) certain events of
bankruptcy or insolvency. If an Event of Default occurs and is continuing, the
Trustee, or the Holders of at least 25% in aggregate Principal Amount of the
Securities at the time outstanding, may declare all the Securities to be due and
payable immediately. Certain events of bankruptcy or insolvency are Events of
Default which will result in the Securities being declared due and payable
immediately upon the occurrence of such Events of Default.

       Holders may not enforce the Indenture or the Securities except as
provided in the Indenture. The Trustee may refuse to enforce the Indenture or
the Securities unless it receives reasonable indemnity or security. Subject to
certain limitations, Holders of a majority in aggregate Principal Amount of the
Securities at the time outstanding may direct the Trustee in its exercise of any
trust or power. The Trustee may withhold from Holders notice of any continuing
Default (except a Default in payment of amounts specified in clause (i) above)
if it determines that withholding notice is in their interests.

17. TRUSTEE DEALINGS WITH THE COMPANY

       The Trustee under the Indenture, in its individual or any other capacity,
may become the owner or pledgee of Securities and may otherwise deal with and
collect obligations owed to it by the Company or its Affiliates and may
otherwise deal with the Company or its Affiliates with the same rights it would
have if it were not Trustee.


                                      A-9

<PAGE>   84

18. NO RECOURSE AGAINST OTHERS

       A director, officer, employee or stockholder, as such, of the Company
shall not have any liability for any obligations of the Company under the
Securities or the Indenture or for any claim based on, in respect of or by
reason of such obligations or their creation. By accepting a Security, each
Securityholder waives and releases all such liability. The waiver and release
are part of the consideration for the issue of the Securities.

19. AUTHENTICATION

       This Security shall not be valid until an authorized officer of the
Trustee manually signs the Trustee's Certificate of Authentication on the other
side of this Security.

20. ABBREVIATIONS

       Customary abbreviations may be used in the name of a Securityholder or an
assignee, such as TEN COM (=tenants in common), TENANT (=tenants by the
entireties), JT TEN (=joint tenants with right of survivorship and not as
tenants in common), CUST (=custodian), and U/G/M/A (=Uniform Gift to Minors
Act).

21. GOVERNING LAW

       THE LAWS OF THE STATE OF NEW YORK SHALL GOVERN THE INDENTURE AND
THIS SECURITY.

       The Company will furnish to any Securityholder upon written request and
without charge a copy of the Indenture which has in it the text of this Security
in larger type. Requests may be made to:

       Networks Associates, Inc.
       2805 Bowers Avenue
       Santa Clara, California 95051
       Attn: Prabhat K. Goyal



                                      A-10

<PAGE>   85



                           [FORM OF CONVERSION NOTICE]

                                CONVERSION NOTICE

To: Networks Associates, Inc.

       The undersigned registered holder of this Security hereby irrevocably
exercises the option to convert this Security, or portion hereof (which is
$1,000 principal amount or a multiple thereof) below designated, for shares of
Common Stock of Networks Associates, Inc. in accordance with the terms of the
Indenture referred to in this Security, and directs that the shares issuable and
deliverable upon such conversion, together with any check in payment for
fractional shares and any Securities representing any unconverted principal
amount hereof, be issued and delivered to the registered holder hereof unless a
different name has been indicated below. If shares or any portion of this
Security not converted are to be issued in the name of a Person other than the
undersigned, the undersigned will pay all transfer taxes payable with respect
thereto.

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

                                 -----------------------------------------------
                                       Signature (s)

Fill in for registration of shares if to be delivered,
and Securities if to be issued other than to and in
 the name of the registered holder:

- -------------------------------------
(Name)

- -------------------------------------
(Street Address)

- -------------------------------------
(City, state and zip code)

Please print name and address

                                 Principal amount to be converted
                                 (if less than all):

                                 $___,000

                                 -----------------------------------------------
                                 Social Security or Other Taxpayer 
                                 Identification Number



                                      A-11

<PAGE>   86



                       [FORM OF OPTION TO ELECT REDEMPTION
                           UPON A FUNDAMENTAL CHANGE]


To:  Networks Associates, Inc.

       The undersigned registered holder of this Security hereby acknowledges
receipt of a notice from Networks Associates, Inc. (the "Company") as to the
occurrence of a Fundamental Change with respect to the Company and requests and
instructs the Company to redeem this Security, or the portion hereof (which is
$1,000 Principal Amount or a multiple thereof) below designated, in accordance
with the terms of the Indenture referred to in this Security.



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


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

                                 -----------------------------------------------
                                       Signature(s)



                                 Principal amount to be redeemed
                                 (if less than all):

                                 $
                                  ------------


                                 -----------------------------------------------
                                 Social Security or Other Taxpayer 
                                 Identification Number




                                      A-12

<PAGE>   87



                                   ASSIGNMENT

For value received ___________________ hereby sell(s), assign(s) and transfer(s)
unto __________________ (Please insert social security or other Taxpayer
Identification Number of assignee) the within Security, and hereby irrevocably
constitutes and appoints ________________ attorney to transfer the said Security
on the books of the Company, with full power of substitution in the premises.

       In connection with any transfer of the Security within the period prior
to the expiration of the holding period applicable to sales thereof under Rule
144(k) (other than any transfer pursuant to a registration statement that has
been declared effective under the Securities Act), under the Securities Act (or
any successor provision), the undersigned confirms that such Security is being
transferred:

        o   To Networks Associates, Inc. or a subsidiary thereof; or

        o   Pursuant to and in compliance with Rule 144A under the Securities
            Act of 1933, as amended; or

        o   Pursuant to and in compliance with Regulation S under the Securities
            Act of 1933, as amended; or

        o   Pursuant to and in compliance with Rule 144 under the Securities Act
            of 1933, as amended;

and unless the box below is checked, the undersigned confirms that to its
knowledge such Security is not being transferred to an "affiliate" of the
Company as defined in Rule 144 under the Securities Act of 1933, as amended (an
"Affiliate").

        o   The transferee is an Affiliate of the Company.

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

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

                                 -----------------------------------------------
                                                Signature(s)

                                 Signature(s) must be guaranteed by a commercial
                                 bank or trust company or a member firm of a
                                 major stock exchange if shares of Common Stock
                                 are to be issued, or Securities to be
                                 delivered, other than to or in the name of the
                                 registered holder.

                                 -----------------------------------------------
                                             Signature Guarantee

NOTICE: The above signatures of the holder(s) hereof must correspond with the
name as written upon the face of the Security in every particular without
alteration or enlargement or any change whatever.


                                      A-13

<PAGE>   88


              [FORM OF SCHEDULE FOR ENDORSEMENTS ON GLOBAL SECURITY
                     TO REFLECT CHANGES IN PRINCIPAL AMOUNT]


                                   Schedule A

                 Changes to Principal Amount of Global Security


<TABLE>
<CAPTION>

                               PRINCIPAL AMOUNT OF SECURITIES           
                              BY WHICH THIS GLOBAL SECURITY IS                       
                                TO BE REDUCED OR INCREASED, AND        
                                          REASON FOR                      REMAINING PRINCIPAL AMOUNT OF        NOTATION
          DATE                       REDUCTION OR INCREASE                   THIS GLOBAL SECURITY              MADE BY 
- --------------------      -----------------------------------------      ------------------------------       --------
<S>                       <C>                                            <C>                                  <C>

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

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

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

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

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

- --------------------      -----------------------------------------      ------------------------------       --------
</TABLE>


                                      A-14

<PAGE>   1

                                   EXHIBIT 5-1

                   Opinion of Wilson Sonsini Goodrich & Rosati

<PAGE>   2

                                                                     EXHIBIT 5.1


                                  May __, 1998


Networks Associates, Inc.
3965 Freedom Circle
Santa Clara, California 95054

        RE: REGISTRATION STATEMENT ON FORM S-3

Ladies and Gentlemen:

        We have examined the Registration Statement on Form S-3 filed by you
with the Securities and Exchange Commission on May __, 1998 (Registration No.
333- ) as amended (the "Registration Statement"), in connection with the
registration under the Securities Act of 1933, as amended, of a total of
$885,000,000 Zero Coupon Convertible Subordinated Debentures due 2018 (the
"Debentures"). We understand that the Debentures are to be sold from time to
time on the Portal Market at prevailing prices or as otherwise described in the
Registration Statement. As your legal counsel, we have examined the proceedings
taken by you in connection with the sale of the Debentures.

        It is our opinion that the Debentures are legally and validly issued,
fully paid and nonassessable.

        We consent to the use of this opinion as an exhibit to the Registration
Statement and further consent to the use of our name wherever appearing in the
Registration Statement, including the Prospectus constituting a part thereof,
and any amendments thereto.

                                       Very truly yours,

                                       WILSON SONSINI GOODRICH & ROSATI
                                       Professional Corporation


<PAGE>   1

                                  EXHIBIT 23.3

                       Consent of Coopers & Lybrand L.L.P.

<PAGE>   2

                                                                    Exhibit 23.3


                       CONSENT OF INDEPENDENT ACCOUNTANTS


        We consent to the incorporation by reference in this registration
statement on Form S-3 (File No. _______) of our report dated January 20,1998,
except for the matters discussed in Notes 14 and 16 as to which the date is
February 13, 1998, on our audits of the financial statements of Network
Associates, Inc. We also consent to the references to our firm under the caption
"Experts."

                                        /s/ COOPERS & LYBRAND L.L.P.
                                        ----------------------------------------
                                        COOPERS & LYBRAND L.L.P.

San Jose, California
May 1, 1998


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