MARIMBA INC
S-1/A, 1999-04-20
PREPACKAGED SOFTWARE
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<PAGE>   1
 
   
    AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON APRIL 20, 1999.
    
 
                                                      REGISTRATION NO. 333-72353
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
 
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            ------------------------
 
   
                                AMENDMENT NO. 4
    
                                       TO
 
                                    FORM S-1
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                            ------------------------
 
                                 MARIMBA, INC.
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)
                            ------------------------
 
<TABLE>
<S>                              <C>                              <C>
            DELAWARE                           7372                          77-0422318
(STATE OR OTHER JURISDICTION OF    (PRIMARY STANDARD INDUSTRIAL           (I.R.S. EMPLOYER
 INCORPORATION OR ORGANIZATION)    CLASSIFICATION CODE NUMBER)         IDENTIFICATION NUMBER)
</TABLE>
 
                                440 CLYDE AVENUE
                        MOUNTAIN VIEW, CALIFORNIA 94043
                                 (650) 930-5282
  (ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER, INCLUDING AREA CODE, OF
                   REGISTRANT'S PRINCIPAL EXECUTIVE OFFICES)
                            ------------------------
 
                                 KIM K. POLESE
                     PRESIDENT AND CHIEF EXECUTIVE OFFICER
                                 MARIMBA, INC.
                                440 CLYDE AVENUE
                        MOUNTAIN VIEW, CALIFORNIA 94043
                                 (650) 930-5282
 (NAME, ADDRESS, INCLUDING ZIP CODE, AND TELEPHONE NUMBER, INCLUDING AREA CODE,
                             OF AGENT FOR SERVICE)
                            ------------------------
 
                                   COPIES TO:
 
<TABLE>
<S>                                                    <C>
                SCOTT C. DETTMER, ESQ.                                GORDON K. DAVIDSON, ESQ.
                 BENNETT L. YEE, ESQ.                                 DAVID K. MICHAELS, ESQ.
                BRANDI L. GALVIN, ESQ.                              CYNTHIA E. GARABEDIAN, ESQ.
                  AMY S. COHEN, ESQ.                                     FENWICK & WEST LLP
               GUNDERSON DETTMER STOUGH                                 TWO PALO ALTO SQUARE
         VILLENEUVE FRANKLIN & HACHIGIAN, LLP                       PALO ALTO, CALIFORNIA 94306
                155 CONSTITUTION DRIVE                                     (650) 494-0600
             MENLO PARK, CALIFORNIA 94025
                    (650) 321-2400
</TABLE>
 
                            ------------------------
 
        APPROXIMATE DATE OF COMMENCEMENT OF PROPOSED SALE TO THE PUBLIC:
As soon as practicable after the effective date of this Registration Statement.
 
    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, as amended, check the following box.  [ ]
 
    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 this form is a post-effective amendment filed pursuant to Rule 462(d)
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.  [ ]
                            ------------------------
 
     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 THAT SPECIFICALLY STATES THAT THIS REGISTRATION
STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF
THE SECURITIES ACT OF 1933, AS AMENDED, OR UNTIL THE REGISTRATION STATEMENT
SHALL BECOME EFFECTIVE ON SUCH DATE AS THE SECURITIES AND EXCHANGE COMMISSION,
ACTING PURSUANT TO SUCH SECTION 8(a), MAY DETERMINE.
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>   2
 
THE INFORMATION IN THIS PROSPECTUS IS NOT COMPLETE AND MAY BE CHANGED. WE MAY
NOT SELL THESE SECURITIES UNTIL THE REGISTRATION STATEMENT FILED WITH THE
SECURITIES AND EXCHANGE COMMISSION IS EFFECTIVE. THIS PROSPECTUS IS NOT AN OFFER
TO SELL THESE SECURITIES AND WE ARE NOT SOLICITING AN OFFER TO BUY THESE
SECURITIES IN ANY STATE WHERE THE OFFER OR SALE IS NOT PERMITTED.
 
PROSPECTUS (Subject to Completion)
 
   
Issued April 20, 1999
    
 
                                4,000,000 Shares
                                      LOGO
                                  COMMON STOCK
 
     MARIMBA, INC. IS OFFERING 3,548,000 SHARES OF ITS COMMON STOCK AND THE
SELLING STOCKHOLDERS LISTED ON PAGES 63 - 64 ARE OFFERING 452,000 SHARES. THIS
IS OUR INITIAL PUBLIC OFFERING AND NO PUBLIC MARKET CURRENTLY EXISTS FOR OUR
SHARES. WE ANTICIPATE THAT THE INITIAL PUBLIC OFFERING PRICE WILL BE BETWEEN $13
AND $15 PER SHARE.
 
                           -------------------------
 
     WE HAVE FILED AN APPLICATION FOR THE COMMON STOCK TO BE QUOTED ON THE
NASDAQ NATIONAL MARKET UNDER THE SYMBOL "MRBA."
 
                           -------------------------
 
     INVESTING IN THE COMMON STOCK INVOLVES RISKS. SEE "RISK FACTORS" BEGINNING
ON PAGE 5.
 
                           -------------------------
 
                           PRICE $            A SHARE
 
                           -------------------------
 
<TABLE>
<CAPTION>
                                                    UNDERWRITING                                PROCEEDS
                                 PRICE TO           DISCOUNTS AND         PROCEEDS TO          TO SELLING
                                  PUBLIC             COMMISSIONS         MARIMBA, INC.        STOCKHOLDERS
                                 --------           -------------        -------------        ------------
<S>                         <C>                  <C>                  <C>                  <C>
Per Share.................           $                    $                    $                    $
Total.....................           $                    $                    $                    $
</TABLE>
 
     The Securities and Exchange Commission and state securities regulators have
not approved or disapproved these securities or determined if this prospectus is
truthful or complete. Any representation to the contrary is a criminal offense.
 
     Marimba and the selling stockholders have granted the underwriters the
right to purchase up to an additional 600,000 shares of common stock to cover
over-allotments. Morgan Stanley & Co. Incorporated expects to deliver the shares
of common stock to purchasers on                , 1999.
 
                           -------------------------
 
MORGAN STANLEY DEAN WITTER
                 CREDIT SUISSE FIRST BOSTON
 
                                   BT ALEX. BROWN
 
                                                 HAMBRECHT & QUIST
 
               , 1999
<PAGE>   3
 
                               TABLE OF CONTENTS
 
   
<TABLE>
<CAPTION>
                                      PAGE
                                      ----
<S>                                   <C>
Prospectus Summary..................    3
Risk Factors........................    5
Special Note Regarding
  Forward-Looking Statements........   16
Use of Proceeds.....................   17
Dividend Policy.....................   17
Capitalization......................   18
Dilution............................   19
Selected Consolidated Financial
  Data..............................   20
Management's Discussion And Analysis
  of Financial Condition and Results
  of Operations.....................   21
</TABLE>
    
 
   
<TABLE>
<CAPTION>
                                      PAGE
                                      ----
<S>                                   <C>
Business............................   32
Management..........................   49
Certain Transactions................   60
Principal And Selling
  Stockholders......................   62
Description Of Capital Stock........   64
Shares Eligible For Future Sale.....   67
Underwriters........................   69
Legal Matters.......................   71
Experts.............................   71
Where You Can Find More
  Information.......................   72
Index To Consolidated Financial
  Statements........................  F-1
</TABLE>
    
 
                            ------------------------
 
     We were incorporated in Delaware in February 1996. Our principal executive
offices are located at 440 Clyde Avenue, Mountain View, California 94043, and
our telephone number is (650) 930-5282.
 
     You should rely only on the information contained in this prospectus. We
have not authorized anyone to provide you with information different from that
contained in this prospectus. We are offering to sell, and seeking offers to
buy, shares of common stock only in jurisdictions where offers and sales are
permitted. The information contained in this prospectus is accurate only as of
the date of this prospectus, regardless of the time of delivery of the
prospectus or of any sale of the common stock.
 
     Unless otherwise indicated, all information in this prospectus (1) gives
effect to the conversion of all outstanding shares of preferred stock into
shares of common stock effective upon the closing of the offering, (2) assumes
no exercise of the underwriters' over-allotment option and (3) assumes no
exercise of an outstanding warrant to purchase 16,865 shares of our common
stock.
   
                            ------------------------
    
 
     Marimba(R) and Castanet(R) are our trademarks. This prospectus also
contains trademarks of other companies.
 
                                        2
<PAGE>   4
 
                               PROSPECTUS SUMMARY
 
   
     You should read the following summary together with the more detailed
information regarding Marimba and the common stock being sold in this offering
and our financial statements and notes appearing elsewhere in this prospectus.
    
 
                                 MARIMBA, INC.
 
     Marimba is a leading provider of Internet-based software management
solutions that enable companies to expand their market reach, streamline
business processes and strengthen relationships with customers, business
partners and employees. Our Castanet product family provides an efficient and
reliable way for enterprises to distribute, update and manage applications and
related data over corporate intranets, extranets and the Internet.
 
   
     Companies are increasingly relying on the Internet to deliver business
critical applications and services to users inside and outside the enterprise.
As the Internet has evolved as a business tool, demands on its infrastructure
have grown and the enterprise computing environment is becoming more complex.
Furthermore, as business applications are increasingly being advertised and
delivered as services, companies and their customers are demanding the same high
levels of availability, ease of use and quality of service that they expect from
common utilities, including electricity and telephone systems. This has created
significant software management challenges. As a result, there is a need for a
new management solution designed specifically for the Internet.
    
 
     Marimba develops Internet services management solutions that enable
companies to deploy and manage e-business applications and services, which
encompass business-to-business, business-to-employee and business-to-consumer
communications and transactions over corporate intranets, extranets and the
Internet. Castanet centralizes and automates the ongoing distribution and
management of applications and services. We believe that by using Castanet,
organizations can leverage the Internet to reduce software management costs,
deliver greater functionality and improve customer loyalty. We intend to extend
the Castanet foundation to manage the array of infrastructure, systems and
components upon which business applications and services depend. The key
elements of our strategy are to extend our technological leadership position,
target companies and service providers conducting e-business, expand our
worldwide distribution channels and expand our professional service
capabilities.
 
   
     Our global customer base spans multiple industry segments including
financial services, insurance, retail, manufacturing and telecommunications.
Castanet customers include various industry leaders, including Bear Stearns,
Charles Schwab, EarthLink, The Home Depot, Intuit, Ingram Micro, Seagate
Technology and Sun Microsystems. We market our Castanet product worldwide
through a combination of a direct sales force, resellers and distributors.
    
                                        3
<PAGE>   5
 
                                  THE OFFERING
 
   
<TABLE>
<S>                                               <C>
Common stock offered by us......................  3,548,000 shares
Common stock offered by the selling
  stockholders..................................  452,000 shares
Common stock to be outstanding after the
  offering......................................  22,745,775 shares(1)
Over-allotment option...........................  600,000 shares
Use of proceeds.................................  Working capital and general corporate purposes.
                                                  See "Use of Proceeds."
Dividend policy.................................  We do not anticipate paying cash dividends in
                                                  the immediate future.
Proposed Nasdaq National Market symbol..........  MRBA
</TABLE>
    
 
- -------------------------
   
(1) Based on the number of shares outstanding as of March 31, 1999. Excludes
    1,959,930 shares of common stock issuable upon exercise of outstanding
    options and warrants as of March 31, 1999 at a weighted average exercise
    price of $4.099. Between March 31, 1999 and April 19, 1999, we granted
    options to purchase 1,040,000 shares of our common stock at an exercise
    price of $15.00 per share.
    
 
                      SUMMARY CONSOLIDATED FINANCIAL DATA
                     (IN THOUSANDS, EXCEPT PER SHARE DATA)
 
<TABLE>
<CAPTION>
                                                                 PERIOD FROM           YEAR ENDED
                                                              FEBRUARY 21, 1996       DECEMBER 31,
                                                               (INCEPTION) TO      ------------------
                                                              DECEMBER 31, 1996     1997       1998
                                                              -----------------    -------    -------
<S>                                                           <C>                  <C>        <C>
CONSOLIDATED STATEMENT OF OPERATIONS DATA:
Revenues....................................................       $    --         $ 5,563    $17,085
Loss from operations........................................        (1,310)         (7,902)    (6,128)
Net loss....................................................        (1,245)         (7,718)    (5,681)
Basic and diluted net loss per share........................       $  (.81)        $ (1.57)   $  (.59)
Weighted-average shares of common stock outstanding used in
  computing basic and diluted net loss per share............         1,528           4,912      9,606
Pro forma basic and diluted net loss per share
  (unaudited)...............................................                                  $  (.37)
Shares used in computing pro forma basic and diluted net
  loss per common share (unaudited).........................                                   15,359
</TABLE>
 
<TABLE>
<CAPTION>
                                                                  DECEMBER 31, 1998
                                                              --------------------------
                                                               ACTUAL     AS ADJUSTED(1)
                                                              --------    --------------
                                                                           (UNAUDITED)
<S>                                                           <C>         <C>
CONSOLIDATED BALANCE SHEET DATA:
Cash, cash equivalents and short-term investments...........  $  7,825       $ 52,109
Working capital.............................................     2,912         47,355
Total assets................................................    14,862         59,146
Long-term portion of capital lease obligations and equipment
  advances, and other long-term liabilities.................       747             95
Redeemable convertible preferred stock......................    18,953             --
Stockholders' equity (net capital deficiency)...............   (13,743)        50,305
</TABLE>
 
- -------------------------
(1) Adjusted to reflect our sale of 3,548,000 shares of common stock in this
    offering, at an assumed initial public offering price of $14.00 per share
    and after deducting estimated underwriting discounts and commissions and
    offering expenses payable by us and the application of our net proceeds from
    this offering.
 
   
RECENT DEVELOPMENTS
    
 
   
     For the three months ended March 31, 1999, we had total revenues of $6.1
million. Total revenues were comprised of $4.5 million from license revenues and
$1.6 million from service revenues. Net loss for the three months ended March
31, 1999 was $1.6 million. Revenues increased due to sales from new and existing
customers that closed during the quarter. We also increased operating expenses
during the quarter as we continued to expand our organization in all operating
areas.
    
                                        4
<PAGE>   6
 
                                  RISK FACTORS
 
     This offering and an investment in our common stock involve a high degree
of risk. You should carefully consider the following risk factors and the other
information in this prospectus before investing in our common stock. Our
business and results of operations could be seriously harmed by any of the
following risks. The trading price of our common stock could decline due to any
of these risks, and you may lose all or part of your investment.
 
RISKS RELATED TO OUR BUSINESS
 
     OUR LIMITED OPERATING HISTORY MAY PREVENT US FROM ACHIEVING SUCCESS IN OUR
BUSINESS
 
   
     We were founded in February 1996 and have a limited operating history. We
began offering our Castanet product in January 1997 and released Castanet 4.0 in
March 1999. As a result, we have a limited operating history that may prevent us
from achieving success in our business. The revenues and income potential of our
business and market are unproven. We will encounter challenges and difficulties
frequently encountered by early-stage companies in new and rapidly evolving
markets. We may not successfully address any of these challenges and the failure
to do so would seriously harm our business and operating results. In addition,
because of our limited operating history, we have limited insight into trends
that may emerge and affect our business.
    
 
     WE HAVE INCURRED LOSSES AND WE EXPECT FUTURE LOSSES
 
   
     Our failure to significantly increase our revenues would seriously harm our
business and operating results. We have experienced operating losses in each
quarterly and annual period since inception and we expect to incur significant
losses in the future. We incurred net losses of $1.2 million for the period
ended December 31, 1996, $7.7 million for the year ended December 31, 1997 and
$5.7 million for the year ended December 31, 1998. As of December 31, 1998, we
had an accumulated deficit of $14.6 million. We expect to significantly increase
our research and development, sales and marketing and general and administrative
expenses. As a result, we will need to significantly increase our quarterly
revenues to achieve and maintain profitability. We may not be able to sustain
our recent revenue growth rates. In fact, we may not have any revenue growth,
and our revenues could decline. For a more detailed description of our operating
results, please see "Selected Consolidated Financial Data" and "Management's
Discussion and Analysis of Financial Condition and Results of Operations."
    
 
     OUR QUARTERLY OPERATING RESULTS ARE VOLATILE AND FUTURE OPERATING RESULTS
REMAIN UNCERTAIN
 
   
     Our quarterly operating results have varied significantly in the past and
will likely vary significantly in the future. As a result, we believe that
period-to-period comparisons of our operating results are not meaningful and
should not be relied upon as indicators of our future performance. In the
future, our operating results will likely be below the expectations of
securities analysts and investors. Our failure to meet these expectations would
likely seriously harm the market price of our common stock.
    
 
   
     Operating results vary depending on a number of factors, many of which are
outside our control. These factors include:
    
 
   
     - The number and timing of large orders, a small number of which can
       significantly affect our revenue and potential seasonality in our sales;
    
 
     - The level of market acceptance for our products, particularly our
       newly-introduced Castanet 4.0;
 
     - The effectiveness of our reseller, systems integrator and original
       equipment manufacturing partners, particularly Tivoli Systems, Inc., in
       selling our Castanet products;
 
   
     - Changes in our customers' budgets; and
    
 
   
     - The cost of our litigation with Novadigm, Inc.
    
 
   
     In addition, we anticipate that the size of customer orders may increase as
we focus on larger business accounts. As a result, a delay in recognizing
revenue, even from just one account, could have a
    
 
                                        5
<PAGE>   7
 
significant negative impact on our operating results. In the past, a significant
portion of our sales have been realized near the end of a quarter. As a result,
a delay in an anticipated sale past the end of a particular quarter could
negatively impact our operating results.
 
   
     We expect that revenues in the first quarter of each year will be lower
than revenues in the fourth quarter of the preceding year. We believe this trend
will be primarily due to the annual nature of budgetary, purchasing and sales
cycles.
    
 
   
     Our expense levels are relatively fixed and are based, in part, on
expectations as to future revenues. As a result, if revenue levels fall below
our expectations, our net loss will increase because only a small portion of our
expenses vary with our revenues. For a more detailed description of our
quarterly results, please see "Management's Discussion and Analysis of Financial
Condition and Results of Operations."
    
 
     WE EXPECT SIGNIFICANT INCREASES IN OUR OPERATING EXPENSES
 
     We intend to substantially increase our operating expenses as we:
 
     - Increase our sales and marketing activities, including expanding our
       direct sales force;
 
     - Increase our research and development activities;
 
   
     - Expand our customer support and professional services organizations; and
    
 
     - Expand our distribution channels.
 
   
     With these additional expenses, we must significantly increase our revenues
in order to become profitable. These expenses will be incurred before we
generate any revenues by this increased spending. If we do not significantly
increase revenues from these efforts, our business and operating results would
be seriously harmed.
    
 
   
     OUR SUCCESS DEPENDS ON OUR CASTANET PRODUCT FAMILY AND NEW PRODUCT
DEVELOPMENT
    
 
   
     We expect to continue to derive substantially all of our revenues from our
Castanet software product family and related services. As a result, our success
depends on our Castanet product family and new product development. A decline in
the price of Castanet or our inability to increase sales of Castanet would
seriously harm our business and operating results. We cannot predict Castanet's
success for several reasons, including:
    
 
     - The recent emergence of the market for Internet services management
       solutions;
 
     - The level of acceptance of our new products and product enhancements;
 
     - The risk of technological changes; and
 
     - Future competition.
 
     Our strategy requires Castanet to be highly scalable -- in other words,
able to rapidly increase deployment size from a limited number of end-users to a
very large number of end-users. If we are unable to achieve this level of
scalability, the attractiveness of our products and services would be
diminished.
 
   
     In addition, to provide a comprehensive Internet services management
solution, we will need to develop and introduce new technologies and product
suites and offer functionality that we do not currently provide. We may not be
able to expand our product offerings or develop a comprehensive Internet
services management solution. In March 1999 we introduced Castanet 4.0, which is
designed to provide customers with additional functionality. Castanet 4.0 may
not provide the benefits we expect, and Castanet 4.0 could fail to meet
customers' requirements or achieve widespread market acceptance. In the past, we
have experienced delays in new product releases, and we may experience similar
delays in the future. If we fail to deploy new product releases on a timely
basis, our business and operating results could be seriously harmed.
    
 
                                        6
<PAGE>   8
 
     WE DEPEND ON THE GROWTH OF OUR CUSTOMER BASE
 
   
     Our success is substantially dependent on the continued growth of our
customer base and the retention of our current customers. If we fail to increase
our customer base, our business and operating results would be seriously harmed.
Our ability to attract new customers will depend on a variety of factors,
including the reliability, security, scalability and cost-effectiveness of our
products and services as well as our ability to effectively market our products
and services. In the past, we have lost potential customers to competitors for
various reasons, including lower prices.
    
 
     WE DEPEND ON INCREASED BUSINESS FROM OUR CURRENT CUSTOMERS
 
   
     We depend on increased business from our current customers. If we fail to
generate repeat and expanded business from our customers, our business and
operating results would be seriously harmed. Most of our current customers
initially purchase a license for a small portion of our products and services
for pilot programs. Customers may not purchase additional licenses to expand
their use of Castanet. In addition, as we deploy new versions of Castanet or
introduce new product suites, our current customers may not require the
functionality of our new products and may not ultimately license these products.
    
 
   
     The terms of our standard license arrangements provide for a one-time
license fee and a prepayment of one year of software maintenance and support
fees. The maintenance agreement is renewable at the option of the customer.
Because the total amount of maintenance and support fees we receive in any
period depends in large part on the size and number of licenses that we have
previously sold, any downturn in our software license revenues would negatively
impact our future service revenues. In addition, if customers elect not to renew
their maintenance agreements, our service revenues could be significantly
adversely affected.
    
 
     WE HAVE A LONG SALES CYCLE THAT DEPENDS UPON FACTORS OUTSIDE OUR CONTROL
 
   
     A customer's decision to purchase Castanet typically involves a significant
commitment of resources and is influenced by the customer's budget cycles. In
addition, selling Castanet requires us to educate potential customers on its use
and benefits. As a result, our products have a long sales cycle which can take
over six months. We face difficulty predicting the quarter in which sales to
expected customers may occur. The sale of our products is also subject to delays
from the lengthy budgeting, approval and competitive evaluation processes that
typically accompany significant capital expenditures. For example, customers
frequently begin by evaluating our products on a limited basis and devote time
and resources to testing our products before they decide whether or not to
purchase a license for deployment. Customers may also defer orders as a result
of anticipated releases of new products or enhancements by us or our
competitors.
    
 
     WE DEPEND ON OUR RELATIONSHIP WITH TIVOLI
 
   
     Tivoli, a subsidiary of International Business Machines Corporation, has
been a reseller of our products since 1997. Any disruption of our relationship
with Tivoli would seriously harm our business and operating results. Tivoli
accounted for $3.1 million, or approximately 18% of our revenues in 1998. This
includes $1.9 million, or approximately 40% of our revenues, in the third
quarter of 1998 and $1.1 million, or approximately 19% of our revenues, in the
fourth quarter of 1998. Because a significant amount of our revenues has been
and is expected to be derived from Tivoli, we are dependent on our relationship
with Tivoli.
    
 
     In March 1998, we entered into an original equipment manufacturer agreement
with Tivoli under which Tivoli is building upon the Castanet infrastructure to
develop a product called Cross-Site. We expect Tivoli to release Cross-Site in
1999. As a result, we expect to generate revenues from royalties on sales of
Cross-Site beginning in 1999 and expect that revenues from Tivoli's resale of
Castanet will rapidly decrease and become insignificant as Tivoli transitions
its efforts to the sale of Cross-Site. The per seat payment under our original
equipment manufacturer agreement will be less than the per seat
 
                                        7
<PAGE>   9
 
payment under our reseller agreement with Tivoli. In addition, the change in our
relationship with Tivoli from a reseller relationship to an original equipment
manufacturer relationship will require significantly increased ongoing
technological assistance to, and collaboration with Tivoli to support the
integration of Castanet into Cross-Site. This collaboration may be unsuccessful.
 
   
     Tivoli might be unable to introduce Cross-Site by its expected release
date. Furthermore, because Cross-Site is a new product, Tivoli might fail to
successfully market and sell Cross-Site. Any failure of Cross-Site to achieve
widespread market acceptance could significantly harm our business and operating
results. Our reseller agreement with Tivoli expires upon the earlier of May 1,
1999 or written notice provided to us by Tivoli. If the release of Cross-Site is
delayed beyond May 1, 1999, Tivoli would no longer resell our Castanet products
unless we and Tivoli extended the term of the reseller agreement. Furthermore,
it is possible for Tivoli to terminate the reseller agreement before the release
of Cross-Site. Because Cross-Site is built upon the Castanet infrastructure, we
expect Cross-Site to compete with our Castanet products. For a more detailed
description of our relationship with Tivoli, see "Management's Discussion and
Analysis of Financial Condition and Results of Operations," and
"Business -- Sales, Marketing and Distribution."
    
 
     NOVADIGM HAS CLAIMED THAT WE INFRINGE ITS INTELLECTUAL PROPERTY
 
   
     On March 3, 1997, Novadigm filed a complaint against us in the United
States District Court for the Northern District of California, alleging
infringement by us of a patent held by Novadigm (U.S. Patent No. 5,581,764, the
"Novadigm Patent"). Novadigm alleges that our infringement relates to methods
for updating data and software over a computer network that we use in our
Castanet products. The complaint also alleges that we have willfully infringed
the Novadigm Patent and seeks up to triple damages under the United States
Patent Act. On May 2, 1997, we filed our answer to Novadigm's complaint and
filed a counterclaim against Novadigm.
    
 
   
     Litigation is subject to inherent uncertainties. In addition, cases like
this generally involve issues of law that are evolving, presenting further
uncertainty. Our defense of this litigation, regardless of the merits of the
complaint, has been, and will likely continue to be, time-consuming, costly and
a diversion for our technical and management personnel. In addition, publicity
related to this litigation has in the past, and will likely in the future, have
a negative impact on the sale of our Castanet products.
    
 
     A failure to prevail in the litigation could result in:
 
     - Our paying monetary damages, which could be tripled if the infringement
       is found to have been willful;
 
     - The issuance of a preliminary or permanent injunction requiring us to
       stop selling Castanet in its current form;
 
   
     - Our having to redesign Castanet, which could be costly and time-consuming
       and could substantially delay Castanet shipments, assuming that a
       redesign is feasible;
    
 
     - Our having to reimburse Novadigm for some or all of its attorneys' fees;
 
     - Our having to obtain from Novadigm a license to its patent, which license
       might not be made available to us on reasonable terms, particularly
       because Novadigm is a competitor; or
 
     - Our having to indemnify our customers against any losses they may incur
       due to the alleged infringement.
 
   
     Any of these results would seriously harm our business and operating
results. Furthermore, we expect to continue to incur substantial costs in
defending against this litigation and these costs could increase significantly
if our dispute goes to trial. It is possible that these costs could
substantially exceed our expectations in future periods. For a more detailed
description of this litigation please see "Business -- Legal Proceedings."
    
 
                                        8
<PAGE>   10
 
     OUR MARKETS ARE HIGHLY COMPETITIVE
 
   
     Our markets are new, rapidly evolving and highly competitive, and we expect
this competition to persist and intensify in the future. Our failure to maintain
and enhance our competitive position could seriously harm our business and
operating results. We encounter current or potential competition from a number
of sources, including:
    
 
   
     - Sellers of enterprise-wide management systems, which include electronic
       software distribution, Tivoli, Computer Associates, Inc. and BMC
       Software, Inc.;
    
 
   
     - Companies like BackWeb Technologies, Inc., Novadigm, and Sterling
       Commerce, Inc., through its subsidiary XcelleNet, Inc., which market
       products that support the distribution of software applications; and
    
 
   
     - Desktop software management suites, like Microsoft's SMS and Intel's
       LanDesk.
    
 
     In addition, we compete with various methods of application distribution
and management, including the web browser, and with application server vendors
and others that have introduced software distribution capabilities into their
products.
 
     As new participants enter the Internet services management market, we will
face increased competition. In addition, potential competitors may bundle their
products or incorporate an Internet services management component into existing
products in a manner that discourages users from purchasing our products. For
example, we expect that future releases of Microsoft's Windows operating
systems, which manage the programs on a computer, will include components
addressing Internet services management functions. Furthermore, new competitors
or alliances among competitors may emerge and rapidly acquire significant market
share. Our competitors may be able to respond more quickly to new or emerging
technologies and changes in customer requirements than we can.
 
   
     We may not be able to maintain a competitive position against current or
future competitors. Some of our competitors have longer operating histories and
significantly greater financial, technical, marketing and other resources than
we do. Many of these companies have more extensive customer bases and broader
customer relationships that they could leverage, including relationships with
many of our current and potential customers. These companies also have
significantly more established customer support and professional services
organizations than we do. In addition, these companies may adopt aggressive
pricing policies.
    
 
     PROTECTION OF OUR INTELLECTUAL PROPERTY IS LIMITED
 
   
     We rely on a combination of patent, trademark, trade secret and copyright
law and contractual restrictions to protect the proprietary aspects of our
technology. These legal protections afford only limited protection for our
technology. Despite our efforts to protect our proprietary rights, unauthorized
parties may attempt to copy aspects of our products or to obtain and use
information that we regard as proprietary. Litigation may be necessary in the
future to enforce our intellectual property rights, to protect our trade secrets
and to determine the validity and scope of the proprietary rights of others. Any
litigation could result in substantial costs and diversion of resources and
could seriously harm our business and operating results. In addition, we sell
our products internationally, and the laws of many countries do not protect our
proprietary rights as well as the laws of the United States. Furthermore, our
competitors could independently develop similar technology.
    
 
     WE MAY BE FOUND TO INFRINGE PROPRIETARY RIGHTS OF OTHERS
 
   
     Other companies, including our competitors, may obtain patents or other
proprietary rights that would prevent, or limit or interfere with our ability to
make, use or sell our products. As a result, we may be found to infringe on the
proprietary rights of others. Furthermore, companies in the software market are
increasingly bringing suits alleging infringement of their proprietary rights,
particularly patent rights. Any parties asserting rights against us would force
us to defend ourselves or our customers against alleged
    
 
                                        9
<PAGE>   11
 
   
infringement of intellectual property rights. We could incur substantial costs
to defend any litigation, and intellectual property litigation could force us to
do one or more of the following:
    
 
     - Cease selling, incorporating or using products or services that
       incorporate the challenged intellectual property;
 
     - Obtain from the holder of the infringed intellectual property right a
       license to sell or use the relevant technology; and
 
   
     - Redesign those products or services that incorporate the relevant
       technology.
    
 
   
     In the event of a successful claim of infringement against us and our
failure or inability to license the infringed technology, our business and
operating results would be significantly harmed. Currently, we are engaged in
litigation with Novadigm concerning the alleged infringement by us of a patent
held by Novadigm. For a more detailed description of this litigation, please see
"Business -- Legal Proceedings."
    
 
     WE DEPEND UPON THIRD-PARTY DISTRIBUTION RELATIONSHIPS AND NEED TO DEVELOP
NEW RELATIONSHIPS
 
   
     Our sales strategy requires that we establish multiple indirect marketing
channels in the United States and internationally through resellers and systems
integrators, and that we increase the number of customers licensing our products
through these channels. As a result, we depend upon third-party distribution
relationships, including our relationship with Tivoli, and need to develop new
relationships. We have a limited number of agreements with companies in these
channels, and we may not be able to increase our number of distribution
relationships or maintain our existing relationships. For example, Netscape, a
reseller of our products, accounted for $1.0 million, or approximately 18% of
our revenues in 1997, and $3.8 million, or approximately 22% of our revenues in
1998. Netscape is no longer an active reseller of our products, and we do not
expect material revenues from Netscape in the future.
    
 
   
     Our current agreements with our channel partners do not prevent these
companies from selling products of other companies, including products that may
compete with our products, and do not generally require these companies to
purchase minimum quantities of our products. These distributors could give
higher priority to the products of other companies or to their own products,
than they give to our products. In addition, sales through these channels
generally have a lower price than direct sales. As a result, while the loss of,
or significant reduction in sales volume to any of our current or future
distribution partners could seriously harm our revenues and operating results, a
significant increase in sales through these channels could also negatively
impact our gross margins. For additional information regarding our third-party
distribution relationships please see "Business -- Sales, Marketing and
Distribution."
    
 
     WE NEED TO DEVELOP AND EXPAND OUR SALES, MARKETING AND DISTRIBUTION
CAPABILITIES
 
   
     We need to expand our marketing and direct sales operations in order to
increase market awareness of our products, market Castanet to a greater number
of enterprises and generate increased revenues. However, competition for
qualified sales personnel is intense. Our products and services require a
sophisticated sales effort targeted at senior management of our prospective
customers. New hires will require extensive training and typically take at least
six months or more to achieve full productivity. Our recent hires may not be as
productive as necessary, and we may not be able to hire enough qualified
individuals in the future. In addition, we have limited experience marketing our
products broadly to a large number of potential customers. For additional
information regarding our direct sales operations please see "Business -- Sales,
Marketing and Distribution."
    
 
     WE NEED TO EXPAND OUR PROFESSIONAL SERVICES
 
   
     We may not be able to attract, train or retain the number of highly
qualified services personnel that our business needs. We believe that growth in
our product sales depends on our ability to provide our customers with
professional services and to educate third-party resellers and consultants on
how to provide similar services. As a result, we plan to increase the number of
our services personnel to meet
    
 
                                       10
<PAGE>   12
 
   
these needs. However, competition for qualified services personnel is intense.
For additional information regarding our professional services please see
"Business -- Customer Support and Training."
    
 
     We expect our service revenues to increase in dollar amount as we continue
to provide support, consulting and training services that complement our
products and as our installed base of customers grows. This could negatively
impact our gross margin because margins on revenues derived from services are
generally lower than margins on revenues derived from the license of Castanet.
 
     EXPANDING INTERNATIONALLY IS EXPENSIVE, WE MAY RECEIVE NO BENEFIT FROM OUR
EXPANSION AND OUR INTERNATIONAL OPERATIONS ARE SUBJECT TO GOVERNMENTAL
REGULATION
 
   
     We plan to increase our international sales force and expand our operations
abroad. However, we may not be successful in increasing our sales to new or
current international customers. In addition, our international business
activities are subject to a variety of risks, including the adoption of laws,
actions by third parties and political and economic conditions that could
restrict or eliminate our ability to do business in foreign jurisdictions.
Although we currently transact business in U.S. dollars, if we transact business
in foreign currencies in the future, we will become subject to the risks
associated with transacting in foreign currencies, including potential negative
effects of exchange rate fluctuations. To date, we have not adopted a hedging
program to protect us from risks associated with foreign currency fluctuations.
For additional information on our foreign currency risks, please see
"Management's Discussion and Analysis of Financial Condition and Results of
Operations -- Qualitative and Quantitative Disclosure about Market Risk."
    
 
   
     Governmental regulation and requirements influence our sales
internationally. For example, export, and in some cases, import clearances must
be obtained before Castanet can be distributed internationally. Current or new
government laws and regulations, or the application of existing laws and
regulations, including those related to property ownership, content and
taxation, could expose us to significant liabilities, significantly slow our
growth or otherwise seriously harm our business and operating results.
    
 
     WE MUST MANAGE OUR GROWTH AND EXPANSION
 
   
     Our historical growth has placed, and any further growth is likely to
continue to place, a significant strain on our resources. Any failure to manage
growth effectively could seriously harm our business and operating results. We
have grown from 20 employees at December 31, 1996 to 145 employees at December
31, 1998. We have also opened seven sales offices and have significantly
expanded our operations. To be successful, we will need to implement additional
management information systems, improve our operating, administrative, financial
and accounting systems and controls, train new employees and maintain close
coordination among our executive, engineering, accounting, finance, marketing,
sales and operations organizations. In addition, our growth has resulted, and
any future growth will result, in increased responsibilities for management
personnel.
    
 
     WE MUST RETAIN AND ATTRACT KEY PERSONNEL
 
   
     Our success depends largely on the skills, experience and performance of
the members of our senior management and other key personnel, including our
President and Chief Executive Officer, Kim Polese, our Executive Vice President,
Worldwide Sales and Chief Operating Officer, Steven P. Williams and our Chief
Technical Officer, Arthur van Hoff. We may not be successful in attracting,
assimilating or retaining qualified personnel in the future. None of our senior
management or other key personnel is bound by an employment agreement. If we
lose one or more of these key employees, our business and operating results
could be seriously harmed. In addition, our future success will depend largely
on our ability to continue attracting and retaining highly skilled personnel.
Like other companies in the San Francisco Bay Area, we face intense competition
for qualified personnel. For a more detailed description of our management
personnel, please see "Management."
    
 
                                       11
<PAGE>   13
 
     WE RELY ON THIRD-PARTY SOFTWARE AND APPLICATIONS
 
   
     We integrate third-party security and encryption software and digital
certificates as a component of our software. There are inherent limitations in
the use and capabilities of much of the technology that we license from third
parties. Furthermore, this technology is relatively new and is highly complex.
As a result, we face a number of challenges in integrating these technologies
into Castanet. We would be seriously harmed if the providers from whom we
license software ceased to deliver and support reliable products, enhance their
current products or respond to emerging industry standards, third-party product
introductions and technological changes. We use third-party digital certificates
to verify the identity of the sender of data over the Internet. As digital
certificate technology evolves we will be required to make changes to our
software so that it can continue to work with these digital certificates. In
addition, the third-party software may not continue to be available to us on
commercially reasonable terms or at all. The loss of, or inability to maintain
or obtain this software, could result in shipment delays or reductions.
Furthermore, we might be forced to limit the features available in our current
or future product offerings. Either alternative could seriously harm our
business and operating results.
    
 
   
     Almost all of our products are written in Java and require a Java virtual
machine in order to operate. Although we currently ship almost all of our
products with implementations of Java virtual machines made available free of
charge by Sun Microsystems, Inc., Sun may not continue to make these
implementations available at commercially reasonable terms or at all.
Furthermore, if Sun were to make significant changes to the Java language or its
Java virtual machine implementations, or fail to correct defects and limitations
in these products, our ability to continue to improve and ship our products
could be impaired. In the future, our customers may also require the ability to
deploy our products on platforms for which technically acceptable Java
implementations either do not exist or are not available on commercially
reasonable terms. Our customers may also use particular implementations of the
Java virtual machine that may not be technically or commercially acceptable for
integration into our products.
    
 
     SOFTWARE DEFECTS IN CASTANET WOULD HARM OUR BUSINESS
 
   
     Complex software products like ours often contain errors or defects,
including errors relating to security, particularly when first introduced or
when new versions or enhancements are released. In the past, we have discovered
defects in our products and provided product updates to our customers to address
these defects. Despite internal testing and testing by current and potential
customers, Castanet and other future products may contain serious defects,
including security breaches and Year 2000 errors. These defects or errors in
current or future products, including Castanet 4.0, which was recently released,
could result in lost revenues or a delay in market acceptance, which would
seriously harm our business and operating results operations.
    
 
   
     Castanet extensively utilizes digital certificates and other complex
technology. Our use of this technology has in the past and may in the future
result in product behavior problems which may not be anticipated by us or our
customers. For example, most versions of Castanet shipped before Castanet 4.0
contain digital certificates that cause Castanet and any applications being
delivered with Castanet to stop running when the certificate used expires. We
have developed an update which avoids this problem and are in the process of
notifying customers of the issue and distributing the update. It is possible
that we may not be able to identify all affected customers and provide them with
the update. Customers that do not install the update will experience this
problem with respect to Castanet itself on June 24, 1999, and, with respect to
any applications they have deployed with Castanet and signed with a certificate,
on the date of expiration of the certificate they elected to use.
    
 
   
     Since many of our customers use our products for business-critical
applications, errors, defects or other performance problems could result in
financial or other damage to our customers and could significantly impair their
operations. Our customers could seek damages for losses related to any of these
issues. Although our license agreements typically contain provisions designed to
limit our exposure to product liability claims, existing or future laws or
unfavorable judicial decisions could negate our
    
 
                                       12
<PAGE>   14
 
limitation of liability provisions. For example, we could be subject to claims
for losses by customers that we are unable to identify and notify and, as a
result, do not install our update that avoids the digital certificate problem.
We have not experienced any product liability claims to date. However, a product
liability claim brought against us, even if not successful, would likely be time
consuming and costly to defend and could adversely affect our marketing efforts.
 
     YEAR 2000 ISSUES COULD AFFECT OUR BUSINESS
 
     We are in the process of assessing any Year 2000 issues with the computer
communications, software and security systems that we use to deliver and manage
our products and to manage our internal operations. If our systems do not
operate properly with respect to date calculations involving the Year 2000 and
subsequent dates, we could incur unanticipated expenses to remedy any problems,
which could seriously harm our business.
 
     Customers' purchasing plans could be affected by Year 2000 issues if they
need to expend significant resources to correct their existing systems. This
situation may result in reduced funds available to implement new systems based
upon our products. As a result, some customers may defer the license of our
products until after the Year 2000. A decrease in demand for our products due to
customers' Year 2000 issues would seriously harm our business and operating
results.
 
   
     We have identified one Year 2000 date-related limitation in earlier
versions of Castanet. Versions of Castanet before 3.2 display date-related data
to the user in a manner that uses only two digits to represent a year. A
two-digit display of the Year 2000 could cause a user to believe the year
represented was 1900 instead of 2000. This limitation does not affect either
computation of data in our products or operation of the products. All versions
of Castanet currently being shipped use four digits for the display of date
data. Despite our testing and correcting, our products, including Castanet 4.0,
may contain errors or faults with respect to the Year 2000. Our efforts to
address Year 2000 issues are described in more detail in "Management's
Discussion and Analysis of Financial Condition and Results of Operations -- Year
2000 Compliance."
    
 
     OUR FUTURE CAPITAL NEEDS ARE UNCERTAIN
 
   
     We expect the net proceeds from this offering and borrowings under our
credit facility to be sufficient to meet our working capital and capital
expenditure needs for at least twelve months. After that, we may need to raise
additional funds, and additional financing may not be available on favorable
terms, if at all. This could seriously harm our business and operating results.
Furthermore, if we issue additional equity securities, stockholders may
experience dilution, and the new equity securities could have rights senior to
those of existing holders of our common stock. If we cannot raise funds, if
needed, on acceptable terms, we may not be able to develop or enhance our
products, take advantage of future opportunities or respond to competitive
pressures or unanticipated requirements. For a discussion regarding our use of
proceeds from this offering, dilution or our working capital, please see "Use of
Proceeds," "Dilution" and "Management's Discussion and Analysis of Financial
Condition and Results of Operations -- Liquidity and Capital Resources."
    
 
     WE ARE CONTROLLED BY EXISTING STOCKHOLDERS
 
   
     On completion of this offering, executive officers and directors and their
affiliates will beneficially own, in the aggregate, approximately 40.8% of our
outstanding common stock. As a result, these stockholders will be able to
exercise significant control over all matters requiring stockholder approval,
including the election of directors and approval of significant corporate
transactions, which could have the effect of delaying or preventing a third
party from acquiring control over us. We plan to reserve up to 6.5% of the
shares offered in this offering under a directed share program for selected
directors, suppliers, customers and others who have a relationship with us under
which these persons would be able to purchase shares in this offering at the
initial public offering price. For information regarding the
    
 
                                       13
<PAGE>   15
 
   
ownership of our outstanding stock by our executive officers and directors and
their affiliates, please see "Principal and Selling Stockholders."
    
 
   
     WE HAVE IMPLEMENTED ANTI-TAKEOVER PROVISIONS
    
 
   
     Provisions of our certificate of incorporation and bylaws, as well as
provisions of Delaware law, could make it more difficult for a third party to
acquire us, even if doing so would be beneficial to our stockholders. For
information regarding these provisions, please see "Description of Capital
Stock."
    
 
RISKS RELATED TO OUR INDUSTRY
 
     WE FACE CHALLENGES STEMMING FROM OUR EMERGING MARKETS
 
     The market for Internet services management software has only recently
begun to develop, is rapidly evolving and will likely have an increasing number
of competitors. This market may not continue to develop and may not grow. If the
Internet services management market fails to develop, or develops more slowly
than expected, our business and operating results would be seriously harmed.
 
   
     Furthermore, in order to be successful in this emerging market, we must be
able to differentiate ourself from our competitors through our product and
service offerings and brand name recognition. Expanding our product and service
offerings and stimulating brand name recognition will also require significant
additional expenses and development, operations and management resources. We may
not be successful in differentiating ourself or achieving widespread market
acceptance of our products and services. Our failure to stimulate brand name
recognition or to generate satisfactory revenues from these expanded products or
services to offset related increased costs could seriously harm our business and
operating results. Furthermore, enterprises that have already invested
substantial resources in other methods of deploying and managing their
applications and services may be reluctant or slow to adopt a new approach that
may replace, limit or compete with their existing systems. We cannot be certain
that a viable market for our products will emerge or be sustainable.
    
 
     WE DEPEND ON CONTINUED USE OF THE INTERNET AND GROWTH OF ELECTRONIC
BUSINESS
 
     Our future revenues and profits, if any, substantially depend upon the
widespread acceptance and use of the Internet as an effective medium of business
and communication by our target customers. Rapid growth in the use of and
interest in the Internet has occurred only recently. As a result, acceptance and
use may not continue to develop at historical rates, and a sufficiently broad
base of consumers may not adopt, and continue to use, the Internet and other
online services as a medium of commerce. Demand and market acceptance for
recently introduced services and products over the Internet are subject to a
high level of uncertainty, and there exist few proven services and products.
 
   
     In addition, the Internet may not be accepted as a long-term commercial
marketplace for a number of reasons, including potentially inadequate
development of the necessary network infrastructure or delayed development of
enabling technologies and performance improvements. Our success will depend, in
large part, upon third parties maintaining the Internet infrastructure to
provide a reliable network backbone with the necessary speed, data capacity,
security and hardware necessary for reliable Internet access and services.
    
 
   
     To the extent that the Internet continues to experience increased numbers
of users, increased frequency of use or increased bandwidth requirements of
users, the Internet infrastructure may not be able to support the demands placed
on it and the performance or reliability of the Internet could be adversely
affected. In addition, the increased use of the Internet for business and
communication might be limited due to delays in the development or adoption of
new standards and protocols required to handle increased levels of Internet
activity, or due to increased governmental regulation. Furthermore, critical
issues concerning the Internet, including security, reliability, data
corruption, cost, ease of use, accessibility, quality and speed of service,
remain unresolved and could adversely affect the use of the Internet for
business applications. Changes in or insufficient availability of
telecommunications services
    
 
                                       14
<PAGE>   16
 
that support the Internet also could result in slower response times and
adversely affect usage of the Internet generally.
 
     WE MUST RESPOND TO RAPID TECHNOLOGICAL CHANGE AND EVOLVING INDUSTRY
STANDARDS
 
   
     The markets for our Internet services management solutions are marked by
rapid technological change, frequent new product introductions and enhancements,
uncertain product life cycles, changes in customer demands and evolving industry
standards. New products based on new technologies or new industry standards can
quickly render existing products obsolete and unmarketable. Any delays in our
ability to develop and release enhanced or new products could seriously harm our
business and operating results. Our technology is complex, and new products and
product enhancements can require long development and testing periods.
    
 
   
     In addition, we may not be able to timely conform to emerging standards. We
also may not be successful in developing and marketing new products or product
enhancements that respond to technological change, evolving industry standards
or customer requirements. Our failure to conform to prevailing standards could
have a negative effect on our business and operating results.
    
 
RISKS RELATED TO THIS OFFERING
 
     NO PUBLIC MARKET FOR OUR COMMON STOCK CURRENTLY EXISTS AND OUR STOCK PRICE
MAY FLUCTUATE AFTER THIS OFFERING
 
   
     An active public market for our common stock may not develop or be
sustained after this offering. Although the initial public offering price will
be determined based on several factors, the market price for our common stock
will vary from the initial offering price after this offering. The market price
of our common stock may fluctuate significantly in response to a number of
factors, some of which are beyond our control, including:
    
 
     - Quarterly variations in operating results;
 
     - Changes in financial estimates by securities analysts;
 
     - Announcements by us or our competitors of new products, significant
       contracts, acquisitions or strategic relationships;
 
     - Additions or departures of key personnel;
 
     - Any future sales of our common stock or other securities; and
 
     - Stock market price and volume fluctuations, which are particularly common
       among securities of Internet-related companies.
 
     In the past, securities class action litigation has often been brought
against a company following periods of volatility in the market price of its
securities. We may be the target of similar litigation in the future. Securities
litigation could result in substantial costs and divert management's attention
and resources, which could seriously harm our business and operating results.
 
     FUTURE SALES OF SHARES COULD AFFECT OUR STOCK PRICE
 
   
     If our stockholders sell substantial amounts of our common stock in the
public market following this offering, the market price of our common stock
could fall. Based on shares outstanding as of March 31, 1999, upon completion of
this offering, we will have outstanding 22,745,775 shares of common stock. Other
than the shares of common stock sold in this offering, no shares will be
eligible for sale in the public market immediately. Our stockholders will be
subject to agreements with the underwriters or us that restrict their ability to
transfer their stock for 180 days from the date of this prospectus. After these
agreements expire, an additional 18,745,775 shares will be eligible for sale in
the public market. For a detailed discussion of the shares eligible for future
sale, please see "Shares Eligible for Future Sale."
    
 
                                       15
<PAGE>   17
 
     NEW STOCKHOLDERS WILL INCUR SUBSTANTIAL DILUTION AS A RESULT OF THIS
OFFERING
 
   
     The initial public offering price is expected to be substantially higher
than the book value per share of our outstanding common stock. As a result,
investors purchasing common stock in this offering will incur immediate
substantial dilution. In addition, we have issued options to acquire common
stock at prices significantly below the initial public offering price. To the
extent outstanding options are ultimately exercised, there will be further
dilution to investors in this offering. For a discussion regarding dilution in
this offering, please see "Dilution."
    
 
     WE HAVE BROAD DISCRETION TO USE THE PROCEEDS FROM THIS OFFERING
 
   
     We plan to use the proceeds from this offering for general corporate
purposes. Therefore, we will have broad discretion as to how we will spend the
proceeds, and stockholders may not agree with the ways in which we use the
proceeds. We may not be successful in investing the proceeds from this offering,
in our operations or external investments, to yield a favorable return.
    
 
               SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS
 
   
     This prospectus contains forward-looking statements. These statements
relate to future events or our future financial performance. In some cases, you
can identify forward-looking statements by terminology; for instance, may, will,
should, expect, plan, anticipate, believe, estimate, predict, potential or
continue, the negative of these terms or other comparable terminology. These
statements are only predictions. Actual events or results may differ materially.
In evaluating these statements, you should specifically consider various
factors, including the risks outlined in the Risk Factors section. These factors
may cause our actual results to differ materially from any forward-looking
statement.
    
 
   
     Although we believe that the expectations reflected in the forward-looking
statements are reasonable, we cannot guarantee future results, levels of
activity, performance or achievements. Moreover, neither we nor any other person
assumes responsibility for the accuracy and completeness of the forward-looking
statements. We are under no duty to update any of the forward-looking statements
after the date of this prospectus to conform these statements to actual results
or to changes in our expectations.
    
 
                                       16
<PAGE>   18
 
                                USE OF PROCEEDS
 
   
     Our net proceeds from the sale of the 3,548,000 shares of common stock we
are offering are estimated to be $45.1 million, assuming an initial public
offering price of $14.00 per share and after deducting estimated underwriting
discounts and commissions and estimated offering expenses. If the underwriters'
over-allotment option is exercised in full, we estimate that our net proceeds
will be approximately $47.5 million. We will not receive any of the proceeds
from the sale of shares of common stock by the selling stockholders. We expect
to use $811,000 of the net proceeds to repay equipment advances outstanding
under a credit facility that currently bears interest at 7.75% per year and to
use the balance for general corporate purposes, including working capital. A
portion of the net proceeds may also be used for the acquisition of businesses,
products and technologies that are complementary to ours. We have no current
plans, agreements or commitments for acquisitions and are not currently engaged
in any negotiations for any acquisition. Pending these uses, we will invest the
net proceeds of this offering in short-term, investment grade, interest-bearing
securities.
    
 
                                DIVIDEND POLICY
 
   
     We have not paid any cash dividends since inception and do not intend to
pay any cash dividends in the immediate future. In addition, the terms of our
credit agreement prohibit the payment of dividends on our capital stock.
    
 
                                       17
<PAGE>   19
 
                                 CAPITALIZATION
 
   
     The following table presents our capitalization as of December 31, 1998 (1)
on an actual basis (2) on a pro forma basis, after giving effect to the
conversion of all outstanding shares of preferred stock into common stock and
(3) as adjusted to reflect our receipt of the estimated net proceeds from our
sale of 3,548,000 shares of common stock in this offering at an assumed initial
offering price of $14.00 per share, after deducting the estimated underwriting
discounts and commissions and estimated offering expenses, the filing of a new
certificate of incorporation after the closing of this offering and the
application of our proceeds from this offering:
    
 
   
<TABLE>
<CAPTION>
                                                                       DECEMBER 31, 1998
                                                              ------------------------------------
                                                               ACTUAL     PRO FORMA    AS ADJUSTED
                                                              --------    ---------    -----------
                                                                         (IN THOUSANDS)
<S>                                                           <C>         <C>          <C>
Long-term liabilities, less current portion(1)..............  $    747    $    747      $     95
                                                              --------    --------      --------
Redeemable convertible preferred stock, $.0001 par value,
  15,000,000 shares authorized, 5,753,566 shares outstanding
  actual; 15,000,000 shares authorized, no shares
  outstanding pro forma; 10,000,000 shares authorized, no
  shares outstanding as adjusted............................    18,953          --            --
                                                              --------    --------      --------
Stockholders' equity (net capital deficiency):
  Common Stock, $.0001 par value, 30,000,000 shares
     authorized, 13,052,262 shares outstanding actual;
     30,000,000 shares authorized, 18,805,828 shares
     outstanding pro forma; 80,000,000 shares authorized,
     22,353,828 shares outstanding as adjusted(2)...........         1           2             2
  Additional paid-in capital................................     2,182      21,134        66,229
  Note receivable from officer..............................      (160)       (160)         (160)
  Deferred compensation.....................................    (1,116)     (1,116)       (1,116)
  Translation adjustment....................................        (6)         (6)           (6)
  Accumulated deficit.......................................   (14,644)    (14,644)      (14,644)
                                                              --------    --------      --------
     Total stockholders' equity (net capital deficiency)....   (13,743)      5,210        50,305
                                                              --------    --------      --------
          Total capitalization..............................  $  5,957    $  5,957      $ 50,400
                                                              ========    ========      ========
</TABLE>
    
 
- -------------------------
(1) See Notes 3 and 4 of Notes to Consolidated Financial Statements for a
    description of our capital leases and bank arrangements.
 
(2) The share numbers exclude:
 
   - 2,192,568 shares of common stock issuable upon exercise of stock options
     outstanding as of December 31, 1998 at a weighted average exercise price of
     $3.16 per share;
 
   - 1,229,773 shares of common stock available for issuance under our 1996
     Stock Plan;
 
   - 16,865 shares of common stock issuable upon the exercise of a warrant
     outstanding as of December 31, 1998 at an exercise price of $1.48 per
     share;
 
   
   - 1,250,000 shares of common stock available for issuance under our 1999
     Omnibus Equity Incentive Plan;
    
 
   - 500,000 shares of common stock available for issuance under our 1999
     employee stock purchase plan; and
 
   - 150,000 shares of common stock available for issuance under our 1999
     Non-Employee Directors Option Plan.
 
   
     Between December 31, 1998 and April 19, 1999, we issued options to purchase
1,253,500 shares of our common stock at exercise prices ranging from $10.00 per
share to $15.00 per share.
    
 
     See "Management -- Employee Benefit Plans," and Notes 6 and 9 of "Notes to
Consolidated Financial Statements" for a description of our equity plans.
 
                                       18
<PAGE>   20
 
                                    DILUTION
 
     Our pro forma net tangible book value as of December 31, 1998 was $5.2
million, or approximately $.28 per share. Net tangible book value per share
represents the amount of stockholders' equity, less intangible assets, divided
by 18,805,828 shares of common stock outstanding after giving effect to the
conversion of all outstanding shares of preferred stock into shares of common
stock upon completion of this offering.
 
     Net tangible book value dilution per share to new investors represents the
difference between the amount per share paid by purchasers of shares of common
stock in this offering and the net tangible book value per share of common stock
immediately after completion of this offering. After giving effect to our sale
of 3,548,000 shares of common stock in this offering at an assumed initial
offering price of $14.00 per share and after deducting the estimated
underwriting discounts and commissions and estimated offering expenses, our net
tangible book value as of December 31, 1998 would have been $50.3 million or
$2.25 per share. This represents an immediate increase in net tangible book
value of $1.97 per share to existing stockholders and an immediate dilution in
net tangible book value of $11.75 per share to purchasers of common stock in the
offering, as illustrated in the following table:
 
<TABLE>
<S>                                                           <C>      <C>
Assumed initial public offering price per share.............           $14.00
Pro forma net tangible book value per share as of December
  31, 1998..................................................  $ .28
Increase per share attributable to new investors............   1.97
                                                              -----
Pro forma net tangible book value per share after the
  offering..................................................             2.25
                                                                       ------
Dilution per share to new investors.........................           $11.75
                                                                       ======
</TABLE>
 
   
     The following table presents on a pro forma basis as of December 31, 1998,
after giving effect to the conversion of all outstanding shares of preferred
stock into common stock upon completion of this offering, the differences
between the existing stockholders and the purchasers of shares in the offering
(at the assumed initial offering price of $14.00 per share) with respect to the
number of shares purchased from us, the total consideration paid and the average
price paid per share:
    
 
   
<TABLE>
<CAPTION>
                                                   SHARES PURCHASED       TOTAL CONSIDERATION      AVERAGE
                                                 --------------------    ---------------------      PRICE
                                                   NUMBER     PERCENT      AMOUNT      PERCENT    PER SHARE
                                                 ----------   -------    -----------   -------    ---------
<S>                                              <C>          <C>        <C>           <C>        <C>
Existing stockholders..........................  18,805,828     84.1%    $19,727,000     28.4%     $ 1.05
New stockholders...............................   3,548,000     15.9      49,672,000     71.6
                                                 ----------    -----     -----------    -----
          Totals...............................  22,353,828    100.0%    $69,399,000    100.0%
                                                 ==========    =====     ===========    =====
</TABLE>
    
 
   
     The following table indicates the effect of sales by selling stockholders
on existing and new stockholders:
    
 
   
<TABLE>
<CAPTION>
                                                                                           SHARES HELD ASSUMING
                                       SHARES HELD BEFORE THE     SHARES HELD AFTER THE      EXERCISE OF OVER-
                                              OFFERING                  OFFERING             ALLOTMENT OPTION
                                       -----------------------    ---------------------    ---------------------
                                         NUMBER       PERCENT       NUMBER      PERCENT      NUMBER      PERCENT
                                       -----------    --------    ----------    -------    ----------    -------
<S>                                    <C>            <C>         <C>           <C>        <C>           <C>
Existing stockholders................  18,805,828      100.0%     18,353,828      82.1%    17,941,828      79.6%
New stockholders.....................          --          0       4,000,000      17.9      4,600,000      20.4
                                       ----------      -----      ----------     -----     ----------     -----
          Total......................  18,805,828      100.0%     22,353,828     100.0%    22,541,828     100.0%
                                       ==========      =====      ==========     =====     ==========     =====
</TABLE>
    
 
     For a description of the stock owned by the selling stockholders see
"Principal and Selling Stockholders."
 
   
     As of December 31, 1998, there were options outstanding to purchase a total
of 2,192,568 shares of common stock at a weighted average exercise price of
$3.16 per share. In addition, as of December 31, 1998, there was a warrant
outstanding to purchase 16,865 shares of common stock at an exercise price of
$1.48 per share. To the extent outstanding options or warrants are exercised,
there will be further dilution to new investors. For a description of our equity
plans, please see "Management -- Employee Benefit Plans" and Note 6 of Notes to
Consolidated Financial Statements.
    
 
                                       19
<PAGE>   21
 
                      SELECTED CONSOLIDATED FINANCIAL DATA
 
   
     The following selected consolidated financial data should be read in
conjunction with our Consolidated Financial Statements and related notes and
"Management's Discussion and Analysis of Financial Condition and Results of
Operations" included elsewhere in this prospectus. The consolidated statement of
operations data for the inception period ended December 31, 1996 and the fiscal
years ended 1997 and 1998, and the consolidated balance sheet data at December
31, 1997 and 1998 are derived from audited consolidated financial statements
included elsewhere in this prospectus that have been audited by Ernst & Young
LLP, independent auditors. The consolidated balance sheet data at December 31,
1996 are derived from audited consolidated financial statements not included in
this prospectus. Historical results are not necessarily indicative of future
results. The pro forma consolidated balance sheet data as of December 31, 1998
is unaudited and reflects the assumed conversion of all outstanding shares of
preferred stock into common stock upon the consummation of this offering.
    
 
<TABLE>
<CAPTION>
                                                                 PERIOD FROM
                                                              FEBRUARY 21, 1996
                                                               (INCEPTION) TO      YEAR ENDED DECEMBER 31,
                                                                DECEMBER 31,       ------------------------
                                                                    1996              1997          1998
                                                              -----------------    ----------    ----------
                                                                  (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                                           <C>                  <C>           <C>
CONSOLIDATED STATEMENT OF OPERATIONS DATA:
Revenues:
  License...................................................       $    --          $ 5,011       $13,901
  Service...................................................            --              552         3,184
                                                                   -------          -------       -------
          Total revenues....................................            --            5,563        17,085
Cost of revenues:
  License...................................................            --               13            75
  Service...................................................            --              621         1,964
                                                                   -------          -------       -------
          Total cost of revenues............................            --              634         2,039
                                                                   -------          -------       -------
Gross profit................................................            --            4,929        15,046
                                                                   -------          -------       -------
Operating expenses:
  Research and development..................................           515            2,410         5,773
  Sales and marketing.......................................           473            8,054        12,371
  General and administrative................................           322            2,367         2,779
  Amortization of deferred compensation.....................            --               --           251
                                                                   -------          -------       -------
          Total operating expenses..........................         1,310           12,831        21,174
                                                                   -------          -------       -------
Loss from operations........................................        (1,310)          (7,902)       (6,128)
Interest income, net........................................            65              338           488
                                                                   -------          -------       -------
Loss before income taxes....................................        (1,245)          (7,564)       (5,640)
Provision for income taxes..................................            --              154            41
                                                                   -------          -------       -------
Net loss....................................................       $(1,245)         $(7,718)      $(5,681)
                                                                   =======          =======       =======
Basic and diluted net loss per share........................       $  (.81)         $ (1.57)      $  (.59)
                                                                   =======          =======       =======
Weighted-average shares of common stock outstanding used in
  computing basic and diluted net loss per share............         1,528            4,912         9,606
                                                                   =======          =======       =======
Pro forma basic and diluted net loss per share
  (unaudited)...............................................                                      $  (.37)
                                                                                                  =======
Shares used in computing pro forma basic and diluted net
  loss per share (unaudited)................................                                       15,359
                                                                                                  =======
</TABLE>
 
<TABLE>
<CAPTION>
                                                                                                  PRO FORMA AS
                                                                    DECEMBER 31,                       OF
                                                       ---------------------------------------    DECEMBER 31,
                                                             1996            1997       1998          1998
                                                       -----------------    -------    -------    ------------
                                                                   (IN THOUSANDS)
<S>                                                    <C>                  <C>        <C>        <C>
CONSOLIDATED BALANCE SHEET DATA:
Cash, cash equivalents and short-term investments....       $ 2,811         $14,402    $ 7,825      $  7,825
Working capital......................................         2,464           8,036      2,912         2,912
Total assets.........................................         3,156          21,898     14,862        14,862
Long-term portion of capital lease obligations and
  equipment advances, and other long-term
  liabilities........................................            --             211        747           747
Redeemable convertible preferred stock...............         3,963          18,953     18,953            --
Accumulated deficit..................................        (1,245)         (8,963)   (14,644)      (14,644)
Total stockholders' equity (net capital
  deficiency)........................................        (1,235)         (8,471)   (13,743)        5,210
</TABLE>
 
                                       20
<PAGE>   22
 
                      MANAGEMENT'S DISCUSSION AND ANALYSIS
                OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
 
   
     The following discussion should be read in conjunction with the
Consolidated Financial Statements and Notes appearing elsewhere in this
prospectus. The following discussion contains forward-looking statements. Our
actual results may differ significantly from those projected in the
forward-looking statements. Factors that might cause future results to differ
materially from those projected in the forward-looking statements include, but
are not limited to, those discussed below and elsewhere is this prospectus,
particularly in "Risk Factors."
    
 
OVERVIEW
 
     Marimba is a leading provider of Internet-based software management
solutions that enable companies to expand their market reach, streamline
business processes and strengthen relationships with customers, business
partners and employees. Our Castanet product family provides an efficient and
reliable way for enterprises to distribute, update and manage applications and
related data over corporate intranets, extranets and the Internet.
 
   
     We were incorporated in February 1996 and began operations in August 1996.
During the period from February 1996 through December 31, 1996, we were a
development stage enterprise and had no revenues. Our operating activities
during this period related primarily to developing our products, building our
corporate infrastructure and raising capital.
    
 
     In January 1997, we released our first version of Castanet and, to date,
have derived substantially all our revenues from the license of Castanet and
related services. We licensed Castanet in early 1997 to enterprises primarily
for pilot programs that involved limited deployments. In 1997, we grew our
organization by hiring personnel in key areas, particularly sales, research and
development and marketing. During 1998, we continued to develop and market our
Castanet products and enhanced the core Castanet infrastructure with products
that provided greater centralized management control and the ability to
distribute applications written in leading programming languages. Also in 1998,
we sold several licenses of Castanet to repeat customers for larger scale
production deployments. During this time period, we continued to make
substantial investments in our internal infrastructure by hiring employees
throughout the organization. In March 1999 we released Castanet 4.0, which
provides enhanced Internet services management capabilities.
 
     Revenues to date have been derived primarily from the license of our
Castanet products and to a lesser extent from maintenance and support,
consulting and training services. Customers who license Castanet generally
purchase maintenance contracts, typically covering a 12-month period.
Additionally, customers may purchase consulting, which is customarily billed by
us at a fixed daily rate plus out-of-pocket expenses. We also offer training
services that are billed on a per student or per class session basis.
 
     We recognize software license revenue in accordance with Statement of
Position 97-2 "Software Revenue Recognition," as amended by Statement of
Position 98-4. These statements provide guidance on applying generally accepted
accounting principles in recognizing revenue on software transactions and are
effective for our transactions entered into after January 1, 1998. The
application of SOP 97-2 has not had a material impact on our results of
operations.
 
   
     In December 1998, the AICPA issued SOP 98-9, Modification of SOP 97-2,
Software Revenue Recognition, with respect to Certain Transactions. SOP 98-9
amends SOP 97-2 and SOP 98-4 extending the deferral of the application of
provisions of SOP 97-2 amended by SOP 98-4 through fiscal years beginning on or
before March 15, 1999. All other provisions of SOP 98-9 are effective for
transactions entered into in fiscal years beginning after March 15, 1999. We
have not yet determined the effect of the final adoption of SOP 98-9 on our
financial condition or operating results. However, Marimba believes that SOP
98-9 may require more revenue to be deferred for some types of transactions.
    
 
                                       21
<PAGE>   23
 
     License revenues are comprised of perpetual or multiyear license fees which
are primarily derived from contracts with corporate customers and resellers. We
recognize license revenues after execution of a license agreement or receipt of
a definitive purchase order and delivery of the product to end-user customers,
provided that there are no uncertainties surrounding product acceptance, the
license fees are fixed and determinable, collectibility is probable and we have
no remaining obligations. Revenues on arrangements with customers who are not
the ultimate users, primarily resellers, are not recognized until the software
is sold through to the end user. If the fee due from the customer is not fixed
or determinable, revenues are recognized as payments become due from the
customer. If collectibility is not considered probable, revenues are recognized
when the fee is collected. Advance payments are recorded as deferred revenue
until the products are delivered, services are provided, or obligations are met.
Service revenues are comprised of revenues from maintenance agreements,
consulting and training fees. Revenues from maintenance agreements are
recognized on a straight-line basis over the life of the related agreement,
which is typically one year. We recognize service revenues from training and
consulting upon completion of the work to be performed.
 
   
     We market our products worldwide through a combination of a direct sales
force, resellers, system integrators and distributors. Tivoli has been a
reseller of our products and accounted for $3.1 million, or approximately 18% of
our revenues in 1998. This includes $1.9 million, or approximately 40% of our
revenues, in the third quarter of 1998 and $1.1 million, or approximately 19% of
our revenues, in the fourth quarter of 1998. Our reseller agreement with Tivoli
provides for the resale of our products at substantial discounts from list
price. Consequently, the gross margin on these sales is generally lower than the
gross margin on our direct sales.
    
 
   
     We have an original equipment manufacturer agreement with Tivoli under
which Tivoli is building upon the Castanet infrastructure to develop a product
called Cross-Site. Any revenues from Tivoli under this agreement will be from
per seat royalty payments on sales of Cross-Site that contain the Castanet
infrastructure. The per seat payments under this agreement will be less than the
per seat payments we currently have under our reseller agreement with Tivoli. We
expect to generate revenues from royalties on sales of Cross-Site beginning in
1999 and expect that revenues from the resale of Castanet under the Tivoli
reseller agreement will rapidly decrease and become insignificant. Any failure
of Cross-Site to achieve widespread market acceptance could significantly harm
our business and operating results.
    
 
     We entered into a reseller agreement with Netscape in July 1997. Sales by
Netscape accounted for $1.0 million, or approximately 18% of our revenues in
1997, and $3.8 million, or approximately 22% of our revenues in 1998. A majority
of the $3.8 million of 1998 revenues was recognized in the first half of 1998,
with only $1.3 million in revenue recognized in the second half of 1998.
Netscape is no longer an active reseller, and we do not expect any material
revenues from Netscape in the future.
 
     In 1997 and 1998, revenues attributable to customers outside of North
America accounted for approximately 22% and 7% of our total revenues. We plan to
expand our international operations significantly, particularly in Europe,
because we believe international markets represent a significant growth
opportunity. The expansion of our international operations will be subject to a
variety of risks that could significantly harm our business and results of
operations.
 
     Despite our revenue growth, we have incurred significant losses since
inception and, as of December 31, 1998, we had an accumulated deficit of
approximately $14.6 million. We believe our success depends on further
increasing our customer base and on growth in the emerging Internet services
management market. Accordingly, we intend to continue to invest heavily in
sales, marketing and research and development. Furthermore, we expect to
continue to incur substantial operating losses at least through 1999, and our
expected increase in operating expenses will require significant increases in
revenues before we become profitable.
 
                                       22
<PAGE>   24
 
     In view of the rapidly changing nature of our business and our limited
operating history, we believe that period-to-period comparisons of revenues and
operating results are not necessarily meaningful and should not be relied upon
as indications of future performance. Additionally, despite our sequential
quarterly revenue growth during 1998, we do not believe that historical growth
rates are necessarily sustainable or indicative of future growth.
 
RESULTS OF OPERATIONS
 
   
     The following table presents selected financial data for the periods
indicated as a percentage of total revenues. Data for the 1996 inception period
is not presented because we had no revenues during that period.
    
 
<TABLE>
<CAPTION>
                                                                 YEAR ENDED
                                                                DECEMBER 31,
                                                              -----------------
                                                               1997       1998
                                                              ------      -----
<S>                                                           <C>         <C>
CONSOLIDATED STATEMENT OF OPERATIONS DATA:
Revenues:
  License...................................................    90.1%      81.4%
  Service...................................................     9.9       18.6
                                                              ------      -----
Total revenues..............................................   100.0      100.0
Cost of revenues:
  License...................................................     0.2        0.4
  Service...................................................    11.2       11.5
                                                              ------      -----
Total cost of revenues......................................    11.4       11.9
                                                              ------      -----
Gross profit................................................    88.6       88.1
Operating expenses:
  Research and development..................................    43.3       33.8
  Sales and marketing.......................................   144.8       72.4
  General and administrative................................    42.5       16.3
  Amortization of deferred compensation.....................      --        1.5
                                                              ------      -----
Total operating expenses....................................   230.6      124.0
                                                              ------      -----
Loss from operations........................................  (142.0)     (35.9)
Interest income, net........................................     6.1        2.8
                                                              ------      -----
Loss before income taxes....................................  (135.9)     (33.1)
Provision for income taxes..................................    (2.8)      (0.2)
                                                              ------      -----
Net loss....................................................  (138.7)%    (33.3)%
                                                              ======      =====
</TABLE>
 
1996 INCEPTION PERIOD AND YEARS ENDED DECEMBER 31, 1997 AND 1998
 
     REVENUES
 
   
     Total revenues increased $11.5 million, or 207%, from $5.6 million in 1997
to $17.1 million in 1998. We had no revenues during the 1996 inception period.
    
 
     License Revenues. Substantially all license revenues have been derived from
sales of our Castanet products and increased $8.9 million, or 177%, from $5.0
million in 1997 to $13.9 million in 1998. We attribute the increase in license
revenues from 1997 to 1998 to:
 
     - growth in our customer base;
 
     - additional sales to existing customers; and
 
     - an increase in the average contract amount of executed license
       agreements.
 
                                       23
<PAGE>   25
 
     Service Revenues. Service revenues include maintenance and support,
consulting and training. Service revenues increased $2.6 million, or 477%, from
$552,000 in 1997 to $3.2 million in 1998. As a percentage of total revenues,
service revenues increased from 10% of total revenues in 1997 to 19% of total
revenues in 1998. The increase in service revenues was due primarily to
increased revenues from customer maintenance contracts. Also, we increased our
consulting service revenues as customers elected to utilize our consulting
organization. During 1999, we expect service revenues to increase in absolute
amount and as a percentage of total revenues. An increased shift in our revenue
mix toward services would negatively impact our gross margins because service
revenues have higher costs and therefore lower margins than license revenues.
 
     COSTS OF REVENUES
 
   
     Cost of License Revenues. Cost of license revenues consists primarily of
the fees for third-party software products integrated into our products. Cost of
license revenues increased from $13,000 in 1997 to $75,000 in 1998. We had no
cost of license revenues in 1996. The increase from 1997 to 1998 was due to a
third-party software product that we licensed on September 30, 1997 and embedded
in Castanet. Therefore, in 1997, cost of license revenues includes costs
associated with this license only for the fourth quarter, whereas 1998 includes
a full year of these costs. We expect cost of license revenues to increase in
absolute amount during 1999, but to remain a relatively small percentage of
total revenues.
    
 
     Cost of Service Revenues. Cost of service revenues includes:
 
     - salaries and related expenses of our customer support organization;
 
     - salaries and related expenses of our consultants for billable consulting
       engagements;
 
     - cost of third parties contracted to provide consulting services to our
       customers; and
 
     - an allocation of our facilities and depreciation expenses.
 
     Cost of service revenues increased from $621,000 in 1997 to $2.0 million in
1998, representing 113% and 62% of service revenue. The increase in absolute
dollars of cost of service revenues from 1997 to 1998 was due primarily to
growth in our customer support organization and an increase in consulting costs
commensurate with the increase in consulting revenues. Our customer support
organization had no employees at January 1, 1997 and grew to 12 employees at
both December 31, 1997 and December 31, 1998. We had no cost of service revenues
in 1996. We expect our cost of service revenues to increase as we continue to
expand our customer support and consulting organizations. Since service revenues
provide lower gross margins than license revenues, this expansion would
negatively impact our gross margins if our license revenues do not significantly
increase.
 
     OPERATING EXPENSES
 
     Research and Development. Research and development expenses, which are
expensed as incurred, consist primarily of:
 
     - salaries and related costs of our engineering organization;
 
     - fees paid to third-party consultants; and
 
     - an allocation of our facilities and depreciation expenses.
 
   
     We believe that our success is dependent in large part on continued
enhancement of our current products and the ability to develop new,
technologically advanced products that meet the sophisticated requirements of
our customers. Accordingly, we have increased our investment in research and
development in each of the periods since inception. Research and development
expenses increased from $515,000 in the 1996 inception period to $2.4 million in
1997 and $5.8 million in 1998. The increases in research and development
expenses were due to significant increases in engineering personnel and related
    
 
                                       24
<PAGE>   26
 
costs, as well as increases in third-party consulting costs. We expect research
and development expenses to increase in absolute amount in 1999.
 
     Sales and Marketing. Sales and marketing expenses consist primarily of:
 
     - salaries and related costs of our sales and marketing organizations;
 
     - sales commissions;
 
     - costs of our marketing programs, including public relations, advertising,
       trade shows, collateral sales materials, our customer advisory council
       and seminars;
 
     - rent and facilities costs associated with our regional and international
       sales offices; and
 
     - an allocation of our facilities and depreciation expenses.
 
   
     We have significantly increased our sales and marketing expenses since the
1996 inception period. Sales and marketing expenses increased from $473,000 in
the 1996 inception period to $8.1 million in 1997 and $12.4 million in 1998. The
increases in sales and marketing expenses are due primarily to significant
growth in our sales and marketing organizations, an increase in sales
commissions as sales have increased, an increase in the number of regional and
international sales offices and expansion of our marketing programs. We
increased the number of sales and marketing personnel from six employees at
December 31, 1996 to 45 employees at December 31, 1997 and 65 employees at
December 31, 1998. Marimba also increased the number of sales offices from one
at December 31, 1996 to two at December 31, 1997 and to seven at December 31,
1998. Sales commission expense increased by 54% from 1997 to 1998. There was no
sales commission expense in 1996. We expect to continue to invest heavily in
sales and marketing in order to grow revenues and expand our brand awareness.
Consequently, we expect to increase the absolute dollar amount of sales and
marketing expenses in 1999.
    
 
     General and Administrative. General and administrative expenses consist
primarily of:
 
     - costs of our finance, human resources and legal services organizations;
 
     - third-party legal and other professional services fees; and
 
     - an allocation of our facilities and depreciation expenses.
 
   
     General and administrative expenses increased from $322,000 in the 1996
inception period to $2.4 million in 1997 and $2.8 million in 1998. We attribute
the increases in general and administrative expenses to growth of our
administrative organizations in support of overall growth. We increased our
general and administrative personnel from 13 at December 31, 1997 to 21 at
December 31, 1998. We expect the absolute dollar amount of general and
administrative expenses to increase in 1999.
    
 
     Additionally, we have incurred significant outside legal costs in defense
of Novadigm's complaint against us alleging patent infringement filed in March
1997. We expect to incur significant additional costs related to this complaint
in the future, and these costs will increase substantially if we go to trial. A
trial is currently scheduled for September 1999.
 
     Deferred Compensation. We recorded deferred compensation of approximately
$1.4 million in 1998, representing the difference between the exercise prices of
options granted to acquire 940,500 shares of common stock during 1998 and the
deemed fair value for financial reporting purposes of our common stock on the
grant dates. We amortized deferred compensation expense of $251,000 during
fiscal 1998. This compensation expense relates to options awarded to individuals
in all operating expense categories. Total deferred compensation at December 31,
1998 of $1.1 million is being amortized over the vesting periods of the options
on a graded vesting method. The amortization of deferred compensation recorded
will approximate $592,000 for 1999, $310,000 for 2000, $159,000 for 2001 and
$55,000 for 2002.
 
                                       25
<PAGE>   27
 
     INTEREST INCOME, NET
 
   
     Interest income, net consists primarily of interest earned on our cash,
cash equivalents and short term investments offset by interest expenses
associated with our capital leases and equipment advances. Interest income, net
increased from $65,000 in the 1996 inception period to $338,000 in 1997 and
$488,000 in 1998. The increases in interest income, net relate primarily to
increased invested cash balances from our equity financings in August 1996 and
August 1997.
    
 
     PROVISION FOR INCOME TAXES
 
     Our provision for income taxes for the years ended December 31, 1997 and
1998 consists entirely of foreign withholding taxes. No provision for federal or
state income taxes has been recorded because we experienced net losses from
inception through 1998.
 
     As of December 31, 1998, we had federal net operating loss carryforwards of
approximately $11.1 million. We also had a federal research and development tax
credit carryforward of approximately $400,000 at that date. The net operating
loss and credit carryforwards will expire at various dates beginning in 2011
through 2018, if not utilized.
 
     Utilization of the net operating losses and credits may be subject to a
substantial annual limitation due to the ownership change limitations contained
in the Internal Revenue Code of 1986 and similar state provisions. The annual
limitation may result in the expiration of the net operating loss and credits
before utilization.
 
                                       26
<PAGE>   28
 
QUARTERLY RESULTS OF OPERATIONS
 
     The following table presents our unaudited quarterly operating results for
the four quarters of 1998. You should read the following table together with our
Consolidated Financial Statements and related Notes in this prospectus. We have
prepared this unaudited information on the same basis as the audited
Consolidated Financial Statements. This table includes all adjustments,
consisting only of normal recurring adjustments, that we consider necessary for
a fair presentation of our financial position and operating results for the
quarters presented. You should not draw any conclusions about our future results
from the operating results for any quarter.
 
<TABLE>
<CAPTION>
                                                              THREE MONTHS ENDED
                                                ----------------------------------------------
                                                MARCH 31,    JUNE 30,    SEPT. 30,    DEC. 31,
                                                  1998         1998        1998         1998
                                                ---------    --------    ---------    --------
                                                                (IN THOUSANDS)
<S>                                             <C>          <C>         <C>          <C>
Revenues:
  License.....................................   $ 2,491     $ 3,155      $ 3,804     $ 4,451
  Service.....................................       519         526          929       1,210
                                                 -------     -------      -------     -------
Total revenues................................     3,010       3,681        4,733       5,661
Cost of revenues:
  License.....................................        17          16           16          26
  Service.....................................       488         396          482         598
                                                 -------     -------      -------     -------
Total cost of revenues........................       505         412          498         624
                                                 -------     -------      -------     -------
Gross profit..................................     2,505       3,269        4,235       5,037
Operating expenses:
  Research and development....................     1,211       1,311        1,545       1,706
  Sales and marketing.........................     2,082       2,715        3,638       3,936
  General and administrative..................       750         527          596         906
  Amortization of deferred
     compensation.............................        --          --           73         178
                                                 -------     -------      -------     -------
Total operating expenses......................     4,043       4,553        5,852       6,726
                                                 -------     -------      -------     -------
Loss from operations..........................    (1,538)     (1,284)      (1,617)     (1,689)
Interest income, net..........................       149         128          125          86
                                                 -------     -------      -------     -------
Loss before income taxes......................    (1,389)     (1,156)      (1,492)     (1,603)
Provision for income taxes....................        --          --           (4)        (37)
                                                 -------     -------      -------     -------
Net loss......................................   $(1,389)    $(1,156)     $(1,496)    $(1,640)
                                                 =======     =======      =======     =======
</TABLE>
 
     Revenues grew in each quarter of 1998 as demand for our products and
services increased. Commensurate with revenue growth, cost of license revenues
and cost of service revenues have generally increased from quarter to quarter.
Cost of service revenues was higher in the quarter ended March 31, 1998 relative
to the following two quarters due to travel, facilities rental and equipment
costs associated with providing an off-site training course.
 
   
     From inception, we have increased the level of spending throughout the
organization. We intend to increase our sales and marketing, research and
development and general and administrative expenses. We anticipate that these
expenses could significantly precede any revenues generated by the increased
spending. If we do not experience significantly increased revenues from these
efforts, our business and operating results would be seriously harmed.
    
 
     General and administrative expenses were higher in the first and fourth
quarters of 1998 than in the second and third quarters of 1998 primarily due to
higher legal expenses incurred in defense of
 
                                       27
<PAGE>   29
 
Novadigm's complaint against us alleging patent infringement. We expect to incur
significant additional costs related to this complaint in the future, and these
costs will substantially increase if we go to trial.
 
   
     Our quarterly operating results have fluctuated significantly and we expect
that future operating results will be subject to similar fluctuations. In the
past a significant portion of our sales have been realized near the end of the
quarter. Accordingly, a delay in an anticipated sale past the end of a
particular quarter could negatively impact our results of operations for that
quarter. In addition, we generally expect that revenues in the first quarter of
each year will be lower than the fourth quarter of the preceding year. We
believe this trend will be primarily due to the annual nature of budgetary,
purchasing and sales cycles.
    
 
   
RECENT DEVELOPMENTS
    
 
   
     For the three months ended March 31, 1999, we had total revenues of $6.1
million. Total revenues were comprised of $4.5 million from license revenues and
$1.6 million from service revenues. Our net loss for the three months ended
March 31, 1999 was $1.6 million. Revenues increased due to sales from new and
existing customers that closed during the quarter. We also increased operating
expenses during the quarter as we continued to expand our organization in all
operating areas.
    
 
LIQUIDITY AND CAPITAL RESOURCES
 
     We have funded our operations primarily through the private placement of
our equity securities through which we have raised net proceeds of approximately
$19.0 million. We have also financed our operations through equipment lease
financing and bank borrowings. At December 31, 1998, our principal sources of
liquidity included approximately $7.8 million of cash, cash equivalents and
short term investments and a credit facility with a bank. This credit facility
provides us up to $6.5 million in total borrowings, of which $4.0 million of
borrowings are available for loans of up to 80% of our eligible accounts
receivable, $1.0 million is available under a non-formula based advance and $1.5
million is available for equipment advances. As of December 31, 1998, we had
$811,000 in outstanding borrowings for equipment advances. Borrowings under this
credit facility are provided at the bank's prime rate and are secured by
substantially all of our assets.
 
     The credit facility requires Marimba to maintain a minimum liquidity ratio
of not less than 1.50 to 1.00. The minimum liquidity ratio is defined as the sum
of unrestricted cash and cash equivalents divided by the aggregate amount of
equipment advances outstanding under the credit facility. We were in compliance
with the minimum liquidity ratio as of December 31, 1998 and February 28, 1999.
 
     The credit facility also requires Marimba to maintain minimum tangible net
worth of at least $10 million. Tangible net worth is defined as our tangible
assets less total liabilities, plus deferred revenue. As of December 31, 1998,
we were in compliance with the minimum tangible net worth requirement. However,
as of February 28, 1999, Marimba's tangible net worth was less than the required
$10 million. The bank granted us a waiver of this covenant for February 28,
1999. Furthermore, we expect to be in compliance with this requirement at March
31, 1999 and for the duration of the credit facility which expires on May 26,
1999. We intend to repay this credit facility using a portion of the net
proceeds from this offering.
 
   
     Cash used in operations increased from $877,000 in the 1996 inception
period to $1.5 million in 1997 and $6.1 million in 1998 primarily due to our net
losses which were partially offset by increases in deferred revenues and
accounts receivable in 1997 and decreases in deferred revenues and accounts
receivable in 1998.
    
 
   
     Cash used in investing activities increased from $285,000 in the 1996
inception period to $2.7 million in 1997 and $5.4 million in 1998. We have made
substantial investments in computer
    
 
                                       28
<PAGE>   30
 
equipment, computer software, office furniture and leasehold improvements. In
addition, cash used in investing activities during 1998 included net purchases
of short-term investments of $4.1 million.
 
   
     Net cash provided by financing activities was $4.0 million in the 1996
inception period, $15.8 million in 1997 and $861,000 in 1998. Net cash from
financing activities during the 1996 inception period resulted primarily from
the sale of preferred stock. Net cash from financing activities during 1997
resulted primarily from the sale of preferred stock and from the sale of common
stock issued upon exercise of stock options. During 1998, net cash from
financing activities resulted primarily from the sale of common stock issued
upon exercise of stock options and proceeds from equipment advances. We expect
to fund future operating expenses from revenues received from the sale of our
products and services and the proceeds of this offering.
    
 
   
     We currently anticipate that the net proceeds from this offering, together
with our current cash, cash equivalents, short-term investments and credit
facility, will be sufficient to meet our anticipated cash needs for working
capital and capital expenditures for at least the next 12 months. However, we
may need to raise additional funds in future periods through public or private
financings, or other arrangements to fund our operations and potential
acquisitions, if any, over a long-term basis until we achieve profitability, if
ever. Any additional financings, if needed, might not be available on reasonable
terms or at all. Failure to raise capital when needed could seriously harm our
business and operating results. If additional funds are raised through the
issuance of equity securities, the percentage of ownership of our stockholders
would be reduced. Furthermore, these equity securities might have rights,
preferences or privileges senior to our common stock.
    
 
YEAR 2000 COMPLIANCE
 
     BACKGROUND OF YEAR 2000 ISSUES
 
   
     Many currently installed computer and communications systems and software
products are unable to distinguish 21st century dates from 20th century dates.
This situation could result in system failures or miscalculations causing
disruptions in the operations of any business. As a result, many companies'
software and computer and communications systems may need to be upgraded or
replaced to comply with these Year 2000 requirements.
    
 
     CUSTOMER REPRESENTATIONS AND WARRANTIES
 
     We generally represent and warrant to our customers that the occurrence of
the date January 1, 2000 and any related leap-year issues will not cause our
products to fail to operate properly. In some cases, this warranty includes
representations regarding the ability of our product to store, display,
calculate, compute and otherwise process date-related data. Our warranty
generally applies only to our products and excludes failures resulting from the
combination of our products with other software or hardware or from the use of
our software in a manner not in accordance with the related documentation.
 
   
     If we breach this warranty, remedies in most cases include commercially
reasonable efforts to replace the software and to advise the customer how to
achieve substantially the same functionality through different procedures, as
well as payment of money damages, subject to limitations.
    
 
     OUR PRODUCT TESTING AND LICENSING
 
     We have tested all of our products for Year 2000 compliance. We derived our
testing method from our review and analysis of the Year 2000 testing practices
of other software vendors, relevant industry Year 2000 compliance standards and
the specific functionality and operating environment of our products. The tests
are run on all supported platforms for each release and include testing for date
calculation and internal storage of date information with test numbers starting
in 1999 and going over the
 
                                       29
<PAGE>   31
 
Year 2000 boundary. Based on these tests, we believe our products to be Year
2000 compliant with respect to date calculations and internal storage of date
information.
 
   
     We have identified one Year 2000 date-related limitation in earlier
versions of Castanet. Versions of Castanet before version 3.2 display date
information to the user in a manner that uses only two digits to represent a
year. A two-digit display of the Year 2000 could cause a user to believe the
year represented was the Year 1900 instead of the Year 2000. This limitation
does not affect either computation of data in our products or operation of the
products. All versions of Castanet currently being shipped use four digits for
the display of date data.
    
 
     INTERACTION OF OUR PRODUCTS WITH THIRD-PARTY SOFTWARE
 
   
     Our products contain, operate with and depend on third-party code that we
may not be able to independently verify is Year 2000 compliant. Substantially
all of our products interface with and depend on Sun's JVM (Java Virtual
Machine). Sun has indicated that the version of the JVM on which Castanet 3.0,
Castanet 4.0, and all later versions depend, is Year 2000 compliant, but Sun has
made no similar statement regarding earlier versions of the JVM. Our products
also contain and depend on software licensed to us from RSA Data Security, Inc.,
Netscape, VeriSign, Inc. and Phaos Technology Corporation. Although each of
those companies has made representations that the licensed code is Year 2000
compliant, we may not be able to verify this by independent testing. Finally,
our products also interact with external sources including as other software
programs and operating systems which may not be Year 2000 compliant or which may
not provide date data to our products in a manner that is Year 2000 compliant.
Any interaction with third-party software which is not Year 2000 compliant could
cause our products to fail to properly operate or to properly process date
information.
    
 
     OUR INTERNAL SYSTEMS
 
     Although we do not have a formal contingency plan to address Year 2000
issues, we are in the preliminary stages of assessing our internal risks
associated with the Year 2000 issue. We are working internally and with
third-party vendors to assure that we are prepared for the Year 2000. We have
inventoried our internal software and hardware systems, as well as products and
services provided by third-party vendors. These systems include those related to
product delivery, customer service, internal and external communications,
accounting and payroll, which we consider critical areas of our business. We are
seeking vendor certification for all third-party systems and plan to develop a
detailed risk assessment and action plan that will include testing of both
critical systems and systems for which no certification has been obtained. The
identification, certification and risk assessment phases of our Year 2000
project are expected to be completed by the end of April 1999. Subsequent phases
will include our own tests, tests conducted by third-party consultants and the
development of contingency plans and/or corrective solutions for systems which
have been identified to be noncompliant. We expect these phases will continue
through the first half of 1999.
 
     COSTS OF ADDRESSING YEAR 2000 COMPLIANCE
 
   
     To date, our costs to address Year 2000 compliance have not been
significant. Based on our preliminary evaluations, we do not believe we will
incur significant operating expenses or be required to invest heavily in
computer system improvements to be Year 2000 compliant. Although we have not yet
developed an exact estimate of these costs, we expect the total costs to be less
than $100,000. However, significant uncertainty exists concerning the potential
costs and effects associated with Year 2000 compliance. Any Year 2000 compliance
problem experienced by us or our customers could decrease demand for our
products which could seriously harm our business and operating results.
    
 
                                       30
<PAGE>   32
 
RECENT ACCOUNTING PRONOUNCEMENTS
 
   
     In March 1998, the AICPA issued SOP No. 98-1, Accounting for the Costs of
Computer Software Developed or Obtained for Internal Use. SOP No. 98-1 requires
entities to capitalize selected costs related to internal-use software once
specified criteria have been met. We expect that the adoption of SOP No. 98-1
will not have a material impact on our financial position or operating results.
We will be required to implement SOP No. 98-1 for the year ending December 31,
1999.
    
 
     In April 1998, the AICPA issued SOP No. 98-5, Reporting on the Costs of
Start-Up Activities. SOP No. 98-5 requires that all start-up costs related to
new operations must be expensed as incurred. In addition, all start-up costs
that were capitalized in the past must be written off when SOP No. 98-5 is
adopted. We expect that the adoption of SOP No. 98-5 will not have a material
impact on our financial position or results of operations. We will be required
to implement SOP No. 98-5 for the year ending December 31, 1999.
 
     In June 1998, the Financial Accounting Standards Board issued SFAS No. 133,
Accounting for Derivative Instruments and Hedging Activities. SFAS No. 133
establishes methods for derivative financial instruments and hedging activities
related to those instruments, as well as other hedging activities. Because we do
not currently hold any derivative instruments and do not engage in hedging
activities, we expect that the adoption of SFAS No. 133 will not have a material
impact on our financial position or results of operations. We will be required
to implement SFAS No. 133 for the year ending December 31, 2000.
 
QUALITATIVE AND QUANTITATIVE DISCLOSURES ABOUT MARKET RISK
 
   
     We develop products in the United States and sell in North America, Asia
and Europe. As a result, our financial results could be affected by various
factors, including changes in foreign currency exchange rates or weak economic
conditions in foreign markets. As all sales are currently made in U.S. dollars,
a strengthening of the dollar could make our products less competitive in
foreign markets. Our interest income is sensitive to changes in the general
level of U.S. interest rates, particularly since the majority of our investments
are in short-term instruments. Due to the nature of our short-term investments,
we have concluded that there is no material market risk exposure. Therefore, no
quantitative tabular disclosures are required.
    
 
     Our investment policy requires us to invest funds in excess of current
operating requirements in:
 
     - obligations of the U.S. government and its agencies;
 
     - investment grade state and local government obligations;
 
     - securities of U.S. corporations rated A1 or AA by Standard and Poors or
       the Moody's equivalent; and
 
   
     - money market funds, deposits or notes issued or guaranteed by U.S. and
       non-U.S. commercial banks meeting particular credit rating and net worth
       requirements with maturities of less than two years.
    
 
At December 31, 1998, our cash and cash equivalents consisted primarily of
demand deposits and money market funds held by large institutions in the U.S.
and our short-term investments were invested in corporate debt and equity
securities maturing in less than one year.
 
                                       31
<PAGE>   33
 
                                    BUSINESS
 
OVERVIEW
 
   
     Marimba is a leading provider of Internet-based software management
solutions that enable companies to expand their market reach, streamline
business processes and strengthen relationships with customers, business
partners and employees. Our Castanet product family provides an efficient and
reliable way for enterprises to distribute, update and manage applications and
related data over corporate intranets, extranets and the Internet. Our strategy
is to extend the Castanet foundation to manage the array of infrastructure,
systems and components upon which business applications and services depend. We
believe that, by using Castanet, companies are able to leverage the Internet
more efficiently by reducing software management costs, delivering greater
functionality and improving customer loyalty. Our global customer base spans
multiple industry segments including financial services, insurance, retail,
manufacturing and telecommunications. Castanet customers include various
industry leaders, including Bear Stearns, Charles Schwab, EarthLink, The Home
Depot, Intuit, Ingram Micro, Nortel Networks, Seagate Technology and Sun
Microsystems. We market our Castanet products worldwide through a combination of
a direct sales force, resellers and distributors.
    
 
INDUSTRY BACKGROUND
 
     In today's intensely competitive business environment, companies
aggressively seek new ways to leverage information technology for competitive
advantage. The Internet has emerged as a crucial business tool, offering the
prospect of ubiquitous, easy-to-use and cost-effective connectivity to anyone,
anywhere, internal or external to the corporate network. As the commercial use
of the Internet grows, companies are delivering increasingly sophisticated
services to a rapidly expanding audience. As a result, demands on the Internet
infrastructure have grown and the enterprise computing environment is evolving
and becoming increasingly complex. Today, companies are extending their
enterprises and starting to use the Internet to connect to their business
partners and customers in fundamentally new ways. Organizations are leveraging
the Internet to deliver services that extend their business processes to
networked, mobile and remote employees, customers, suppliers, vendors,
distributors and other partners.
 
   
     This emerging use of the Internet by businesses, which is often referred to
as "e-business," encompasses business-to-business, business-to-employee and
business-to-consumer communications and transactions. As they adopt e-business,
companies are integrating, co-locating and redistributing their business
processes with those of their strategic partners and customers. By linking these
business processes across the extended enterprise, companies are creating a new
type of service offering for their strategic partners and customers that
requires the ability to deliver business applications and information
dynamically. For example, by directly sharing the information and analysis of an
inventory management application, companies and their suppliers and distributors
can manage supply chain issues in real-time. Alternatively, by providing online
applications including financial portfolio management, companies can offer
personalized, up-to-date account information that creates immediate value for
their customers. When companies are able to offer easy-to-access, compelling,
up-to-date applications and information as services, they create closer business
relationships, new efficiencies and significant strategic advantages. As a
result of these benefits, the e-business market is large and growing rapidly.
International Data Corporation, an independent research firm, estimates that
e-commerce, the subset of e-business that encompasses the sale of goods and
services over the Internet, will grow from $32 billion in 1998 to $426 billion
in 2002.
    
 
   
     In embracing e-business, companies are extending their information
technology infrastructure beyond the organization and moving their core business
applications and processes to the Internet. Before the commercial adoption of
the Internet as a business platform, corporations primarily focused on
connecting the physical computing network infrastructure within their own
organizations and deploying application software to automate internal business
processes. As companies now extend their enterprise
    
 
                                       32
<PAGE>   34
 
   
information technology infrastructure, they face significant new challenges. In
an e-business environment where corporate information technology domains are
being extended, application availability, security and performance are dependent
on the management of a complex, heterogeneous array of systems and services. In
addition, the dynamic nature of e-business requires companies to ensure that
applications and information are up to date. As companies' e-business services
grow, they must be able to rapidly scale their services to thousands, or even
millions, of users. These users are often only intermittently connected to the
network and may be outside the corporation's control. The public nature of the
Internet also exposes the enterprise to heightened security risks. Finally, as
e-business applications are increasingly being advertised and delivered as
services, organizations and their customers are demanding the same high levels
of availability, ease of use and quality of service that they expect from common
utilities including electricity and telephone systems.
    
 
   
     The evolution of enterprise computing to an Internet-based infrastructure
is creating enormous complexity for organizations and producing significant
challenges, similar to those faced by companies as they moved from mainframe
computing to client-server environments. At that time, the need to manage
complex client-server environments gave rise to a large market for network and
systems management solutions. However, these solutions were not designed for an
Internet-based infrastructure. As a result, they do not adequately address
challenges including connectivity, management of endpoints outside of the
firewall and security requirements of a public network, and massive scalability,
all of which are critically important when delivering services across the
Internet.
    
 
   
     These challenges have created the need for a new Internet services
management solution that supports e-business services across the extended
enterprise. A complete Internet services management solution would provide not
only the management of e-business applications on an ongoing basis, but also
management of the infrastructure upon which those applications depend. For
example, an e-business platform would typically be comprised of a set of
business applications, plus a number of components, including web servers,
database management systems, application servers and software security systems.
A complete Internet services management solution will ultimately enable an
information technology department to first deploy and then manage, maintain and
monitor this e-business infrastructure across companies, domains and
geographies.
    
 
THE MARIMBA SOLUTION
 
   
     Marimba is a leading provider of Internet-based software management
solutions that enable companies to expand their market reach, streamline
business processes and strengthen relationships with customers, business
partners and employees. Our Internet services management solutions help solve
complex deployment and management problems that we believe are not adequately
addressed by existing client-server based distribution and management products.
An essential foundation of a complete Internet services management solution is
the ability to effectively deliver and manage applications and information
throughout the extended enterprise. Built from the ground up to provide a robust
Internet-based infrastructure, our Castanet software product family provides
automated distribution, transparent updates and ongoing management of e-business
applications, application-related data, business rules, documents and services
throughout the extended enterprise. Our Castanet product family is modular,
allowing organizations to plug-in functionality as their e-business requirements
expand. In addition, Castanet is designed to provide the reliability,
performance and security that organizations require for their business-critical
e-business applications and services. As a result, we believe our customers are
able to leverage their networks more efficiently and obtain greater
functionality from their business applications.
    
 
                                       33
<PAGE>   35
 
     We believe that the benefits of our Castanet solution will address the
Internet services management needs of leading corporations and service
providers. Key benefits of this solution include:
 
     Reduces Total Cost of Managing the Extended Enterprise. Castanet
facilitates the centralized management of the extended enterprise by enabling
automated, electronic distribution, installation and updates of applications and
related data. In so doing, we believe that Castanet lowers information
technology costs by reducing resources previously required to manually
distribute and customize software. Castanet can further reduce support costs by
removing the burden of software installation and management from the end-user
and by automatically synchronizing application versions across multiple users.
In addition, by replacing only the applications or data that have changed,
Castanet enables rapid and efficient updates, thereby reducing network
connection charges and enabling corporations to realize increased benefits from
their network bandwidth investment.
 
   
     Increases Efficiency of the Extended Enterprise. Castanet provides
organizations with a simple and rapid way to distribute new or updated
applications and information across a complex, distributed and heterogeneous
computing environment. Through access control and policy management, Castanet
enables the collaborative exchange of applications and data among users and
across companies. By enabling organizations to extend access to their data and
applications across the extended enterprise, we believe that Castanet can
increase the efficiency and usefulness of an organization's information and
technology assets. Employees, customers, suppliers, vendors and other partners
can receive the most recent and relevant data directly, reducing an
organization's support requirements. Mobile users can work off-line and receive
the latest updates when they connect to the network. By enabling rapid updates,
Castanet can reduce the time and frustration often associated with obtaining
software and data updates remotely. In addition, because users automatically
receive the most current information, organizations can reduce the inefficiency
caused by outdated information and applications.
    
 
   
     Provides Robust Infrastructure for Mission-Critical Applications. Castanet
enables companies to distribute and update business-critical applications
throughout the extended enterprise in a reliable and efficient manner. When
corporations transmit sensitive e-business applications and data across public
or private networks, precautions must be taken to authenticate user identity,
verify application and data integrity, and protect data confidentiality.
Castanet provides comprehensive security functionality, including digital
certificates, encryption and end-user access control. Castanet can rapidly scale
to allow organizations to distribute applications and upgrades to large numbers
of users in geographically dispersed locations. We believe this architecture
helps organizations improve application performance and reduce network traffic.
If a download is interrupted, Castanet can automatically restart at the point of
interruption when it reconnects without corrupting the original application or
file.
    
 
   
     Enhances Customer Relationships. As corporations extend their enterprise to
customers, business partners and employees worldwide, it is becoming
increasingly important to deliver personalized services, content and user
interfaces to individual customers or target groups. Castanet enables the
tailoring of services through automatic identification of target user groups, or
through server extensions which allow the automated selection of code and
content. In addition, Castanet provides the ability to create and package custom
user interfaces. Using the customization and branding functions available with
Castanet, information technology and operational managers can define and enforce
consistent application configurations and branding across the extended
enterprise. We believe that each of these capabilities allows companies to
strengthen their brand and offer more compelling Internet-based services
resulting in increased customer loyalty.
    
 
STRATEGY
 
     Our objective is to become the leading provider of Internet services
management solutions. We are pioneering this new and emerging market and have
established a foundation upon which we can build to
 
                                       34
<PAGE>   36
 
   
address the growing needs of the extended enterprise. The key elements of our
strategy to achieve our objective are:
    
 
     Extend Technological Leadership Position. We are the first company to
provide an integrated product suite that has been designed from the ground up to
provide e-business application distribution and management solutions across the
extended enterprise. We believe that our application distribution and management
solutions provide us with a first mover advantage and an essential foundation
for a comprehensive Internet services management solution. We intend to advance
our technological leadership by investing significant resources in research and
development. In addition, by implementing and actively promoting new industry
standards, we intend to facilitate widespread adoption of Castanet by
enterprises conducting e-business.
 
   
     Target Companies and Service Providers Conducting E-business. We intend to
expand adoption of Castanet by focusing our efforts on selling to large
companies in industry sectors where the deployment of e-business solutions
provides a key competitive advantage. While many large companies are now
engaging in some form of e-business, we believe that Castanet is particularly
attractive to companies in industry sectors including financial services,
insurance, health care, manufacturing, retail, technology and telecommunications
given their sophisticated technological needs. We believe that our experience in
successfully providing Castanet solutions to industry-leading companies provides
us a competitive advantage in selling Castanet to potential customers. Castanet
provides an enabling infrastructure for application service providers and
Internet service providers to distribute and remotely manage applications
services simply, efficiently and at a low cost.
    
 
     Expand Worldwide Sales. We believe that international markets represent a
significant growth opportunity as organizations seek global e-business
solutions. We currently have a direct sales presence in North America and
Europe. In the Asia/Pacific region, we sell our Castanet products through third-
party distributors. We intend to expand our direct sales force and to establish
additional sales offices domestically and internationally. In addition, we plan
to complement our current distribution channels with selected resellers, system
integrators and joint marketing partners to expand our market reach.
 
     Expand Professional Services. We believe that our experienced team of
consultants, support engineers and training staff provide a key competitive
advantage in the sale of the Castanet solution. We intend to expand this team
and continue to invest in the advanced level of training required to provide
superior service to our customer base. In addition, we believe that the complex
and strategic nature of Internet services management software provides us with a
significant opportunity to provide consulting services to customers to help them
successfully develop, deploy and maintain their e-business applications.
 
   
     Each of the elements of our strategy are ongoing efforts and we do not have
specific implementation dates.
    
 
                                       35
<PAGE>   37
 
CASTANET PRODUCT FAMILY
 
   
     The Castanet product family provides a robust framework to distribute,
update and manage applications and related data over corporate intranets,
extranets and the Internet to multiple endpoints, including servers, desktops
and mobile systems. Designed upon an open, extensible architecture, our Castanet
products automatically recover from transmission errors, provide a variety of
security features, reduce network connection time, allow personalization and are
rapidly scalable to a large number of users in geographically dispersed
locations. The Castanet product family is modular, allowing organizations to add
functionality as their e-business management requirements expand. Each
generation of Castanet has introduced additional functionality including
Castanet 4.0, released in March 1999, which added the Castanet Inventory Suite
and Castanet Subscription Suite. The Castanet product family is summarized
below:
    
 
<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------------
             CASTANET PRODUCT FAMILY                                       BENEFITS
<S>                                                   <C>
- --------------------------------------------------------------------------------------------------------
 CASTANET INFRASTRUCTURE SUITE:                       - Supports multiple applications across
                                                      heterogeneous computing environments, in one
 The Infrastructure Suite provides the foundation       integrated solution
 upon which all other Castanet product suites are
 built. It provides the components necessary to       - Provides security features to authenticate users
 distribute, manage and maintain applications         and help protect data integrity and
 across intranets, extranets and the Internet.          confidentiality
                                                      - Provides bandwidth efficiency, lowering network
                                                        connection costs
                                                      - Supports mobile and remote users, who may be
                                                      only intermittently connected to the network
                                                      - Supports personalization, making it easy to
                                                      install and manage appropriate application
                                                        versions for each user
                                                      - Rapidly scales to a large number of users in
                                                        geographically dispersed locations
                                                      - Utilizes open standards and extends to meet
                                                      changing user requirements
- --------------------------------------------------------------------------------------------------------
 CASTANET PRODUCTION SUITE:                           - Automates the application publishing process
 The Production Suite provides the ability to         - Provides easy-to-use interfaces for defining the
 package and publish custom or off-the-shelf          way applications are configured
 applications, files and documents for
 distribution by the Castanet Infrastructure          - Reduces software and platform dependencies
 Suite.
                                                      - Provides the ability to customize the
                                                      application installation process to shield end
                                                        users from software installation complexities
- --------------------------------------------------------------------------------------------------------
 CASTANET MANAGEMENT SUITE:                           - Helps trouble-shoot and test Castanet
                                                      deployments
 The Management Suite provides comprehensive
 solutions for the management, deployment and         - Streamlines application rollouts across multiple
 maintenance of enterprise-wide Castanet                organizations
 installations. The suite permits centralized
 monitoring and control of local and remote           - Provides usage reports and log files
 Castanet servers and clients. Optional extensions
 to the Management Suite also provide extensive       - Strengthens brand awareness by allowing
 client customization and branding capabilities.      information technology managers and business
                                                        organizations to customize user interfaces
- --------------------------------------------------------------------------------------------------------
</TABLE>
 
                                       36
<PAGE>   38
 
   
<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------------
             CASTANET PRODUCT FAMILY                                       BENEFITS
<S>                                                   <C>
- --------------------------------------------------------------------------------------------------------
 CASTANET INVENTORY SUITE:                            - Automates collection of inventory information,
                                                        including application, network, computer
 The Inventory Suite simplifies the discovery,          hardware and operating system information
 tracking and management of the desktop, server
 and portable computing resources within the          - Supports intermittently connected computing
 enterprise. By providing database integration and      resources, providing network managers with
 reporting capabilities, the suite is designed to       greater inventory accuracy and administrative
 allow administrators to generate up to date            control
 information on machines within their domains of
 control, even if they are only connected             - Provides the ability to view inventory
 intermittently to a network.                         information and perform searches
                                                      - Supports relational database storage for
                                                      enterprise-wide access, data consolidation and
                                                        reporting
                                                      - Enables customization of inventory parameters
                                                      and schedules
- --------------------------------------------------------------------------------------------------------
 CASTANET SUBSCRIPTION SUITE:                         - Streamlines definition of enterprise-wide
 The Subscription Suite is designed to provide        application subscription policies based on user
 corporate information technology managers with         profiles
 the ability to use existing profile information
 to define, distribute and enforce a centralized      - Automates distribution and enforcement of
 subscription policy that determines which            enterprise-wide application subscription policies
 applications should be made available, installed
 or deleted from a user's machine.                    - Integrates with user profile information from
                                                      multiple sources
                                                      - Supports multiple application subscription
                                                      modes, from notification of availability to
                                                        automatic installation
                                                      - Enables customization of subscription parameters
                                                      and schedules
- --------------------------------------------------------------------------------------------------------
</TABLE>
    
 
     We generally license the Castanet Infrastructure Suite on a per user basis
with the total fee determined, in part, by the number of end-users who can
obtain updates using Castanet. The license terms also vary depending on the
number of applications to be deployed with Castanet and whether the computer
receiving updates is a server or client computer. Separate licenses are
available for the right to customize the user interface of the client component
of Castanet and to distribute the client and/or server components of the system
to customers, partners or others outside of the customer's own organization. The
Castanet Management and the Production Suites are generally licensed on a per
user basis, based on the number of individual systems administrators who will
use the components of the suites. We intend to license the Castanet Inventory
Suite in a manner similar to the Castanet Infrastructure Suite and we intend to
license the Castanet Subscription Suite in a manner similar to the Castanet
Management and Production Suites.
 
                                       37
<PAGE>   39
 
ARCHITECTURE
 
   
     The Castanet infrastructure is designed to distribute software and data
efficiently over networks based upon TCP/IP (Transmission Control
Protocol/Internet Protocol), the basic communication protocol of the Internet.
Castanet packages an application as a channel and publishes the application to a
transmitter, which then distributes the channel and subsequent updates across a
network to tuners on client computers. The fundamental components of the
architecture are illustrated below:   LOGO
    
 
   
     Channel. A channel is the application and/or related data that is
distributed using Castanet. For example, a channel could consist of a
stock-trading application written in Java or a shrink-wrapped application,
including Microsoft Word and related documents. Each channel has an associated
list of properties that describes its features, including application type,
author, copyright notice, update schedule and entry point. Castanet's
application packager prepares the channel for distribution and inserts a channel
adapter that installs and launches the application in a platform and application
specific manner. The application packager is designed to accommodate a range of
application types, including Java applets, Java Beans, Visual Basic, C, C++ and
shrink-wrapped applications. Using OSD (Open Software Description), a format for
describing the way software programs relate to one another, the application
packager creates a description of the installation process which is based on XML
(eXtensible Markup Language), a format commonly used on the Internet to describe
data and documents. Using this technology, both shrink-wrapped and custom
applications can be installed, updated and repaired without requiring changes to
the original application and without relying on the original application
installer. After the application is packaged as a channel, it is published to
the transmitter for distribution over the network.
    
 
   
     Transmitter. The transmitter is the server component of Castanet. It
distributes channels and subsequent updates to the tuner, the Castanet client.
The tuner and transmitter communicate using the Castanet protocol which is
designed to minimize bandwidth requirements for updates over HTTP (Hyper-Text
Transfer Protocol), the protocol used to distribute web pages. The Castanet
protocol uses compression technology that compresses data and applications, and
differential updating which identifies changes in code and updates only the
changed portion. All updates are transactional, interruptible and atomic, which
means that channels on the tuner are always in a functional state even if the
most recent update failed or was interrupted. In addition, interrupted downloads
can be restarted automatically at the point of interruption. Castanet provides
functionality to identify and verify each channel resource and installed
applications. Additional transmitter features include replication,
personalization, client feedback, bandwidth management and policy
administration. Castanet implements user authentication and
    
 
                                       38
<PAGE>   40
 
   
access control using passwords or client-side certificates and by leveraging
directory services, including LDAP (Lightweight Directory Access Protocol), or
Microsoft's Active Directory.
    
 
   
     Tuner. The tuner is the client component of Castanet. The tuner subscribes
to channels located on the transmitter and downloads, installs and receives
updates of each channel. Once received from a transmitter, channels are stored
locally on the tuner, making the downloaded channel resources instantly
accessible regardless of whether the user is connected to the network. The tuner
is typically configured to run in the background and can manage multiple
channels simultaneously without end-user interaction, updating them as necessary
to present the user with the most recent version. In addition, the tuner's user
interface can be customized to include the brand, logo and other look and feel
elements desired by the customer. The tuner provides a comprehensive set of
features for modem support, bandwidth management, security controls, certificate
management, update scheduling and support for corporate network security
mechanisms.
    
 
     The Castanet distribution architecture can be scaled rapidly to a large
number of end users using replication and caching technology. The illustration
below describes an example of how applications can be deployed globally to
multiple end users:
 
                                      LOGO
 
   
     Using the Castanet protocol, tuners can be redirected automatically to
additional transmitters, serving as repeaters, in order to reduce the load on
the main transmitter and to make more efficient use of available bandwidth. By
adding repeaters, it is possible to provide faster download times and to service
thousands of simultaneous downloads. Repeaters can be added and removed
dynamically without disrupting the overall service, allowing for a high level of
scalability, improved service quality and availability. In addition, the use of
a caching proxy server, which stores frequently accessed files on a local disk,
can improve the efficiency of downloads through corporate network security
barriers in an intranet or network into the enterprise.
    
 
   
     In addition to the basic Castanet components, a variety of Castanet
features are available for reporting downloads, staging updates, application
signing, resource planning, certificate management, license installation,
transmitter administration, tuner administration and deploying tuner updates.
All of these features are distributed as Castanet channels, and together with
the basic infrastructure compo-
    
 
                                       39
<PAGE>   41
 
nents, provide all the necessary functionality to distribute, manage and
maintain mission critical applications and services. Where appropriate, we
provide programming interfaces and software development kits for customized
extensions, allowing customers to tailor the Castanet solution to their specific
needs, or to embed the Castanet technology into existing applications.
 
TECHNOLOGY
 
     We believe that our investment in engineering has resulted in technology
that provides us with a strategic advantage. Castanet has been built from the
ground up to provide a robust Internet-based solution. Castanet provides a
lightweight, cross-platform and easy-to-deploy solution that helps solve complex
application deployment and management problems which we believe are not
addressed adequately by existing client-server distribution and management
tools.
 
     Castanet makes extensive use of a broad range of technologies, including
Java, TCP/IP, HTTP, LDAP, XML, SSL (Secure Socket Layer), a protocol for secure
transmissions over the Internet, and various digital security technologies. In
addition, we have worked with partners to submit several standards proposals to
the World Wide Web Consortium, including the OSD format jointly developed with
Microsoft and the DRP protocol (HTTP Distribution and Replication Protocol), a
protocol which efficiently distributes data on the Internet, jointly developed
with Netscape, Sun Microsystems, Novell, Inc. and @Home Network.
 
   
     The Castanet protocol is designed to distribute applications and data to
multiple intermittently connected endpoints. The protocol is layered on HTTP so
that it can be used from within most secure corporate intranets and networks by
tunneling through an HTTP proxy server. When the user is on line, the tuner
initiates update requests either when requested by the user or automatically
using a predefined update schedule. When an update request is received, the
transmitter quickly determines which files in the channel have changed, and if a
change has occurred, Castanet determines exactly which bytes within those files
have changed. The tuner then downloads the resulting changes, and compression
algorithms are used to further reduce the total download overhead. The
efficiency of the Castanet protocol makes it possible to distribute frequent
updates to large applications and application files with relatively low
bandwidth utilization. The protocol also provides features for user
authentication, personalization of content, the distribution of events and data
from the tuner to the transmitter and the automatic redirection of requests to
repeaters.
    
 
     Our OSD-based software installation technology provides a cross-platform
framework for installing, updating, and verifying applications in an operating
system specific manner. Applications are delivered with an OSD file that defines
the platforms on which the software runs, as well as the libraries and resources
it requires. In addition, the OSD file contains platform specific extensions
that define the exact installation requirements. For example, on the Microsoft
Windows platform, the OSD file describes exactly which files need to be
installed, which libraries that contain application code need to be updated,
which registry entries need to be set and which system scripts need to be
updated. Once an application is installed, the OSD file can be used to upgrade,
verify and uninstall the application. OSD files are generated automatically
using an installation capture technology, which eliminates the use of the
original application installer. Information technology managers can customize
the OSD script to control the level of user involvement in the resulting
installation.
 
     We have invested significant resources in developing Castanet's security
implementation. Castanet's security features currently include end user
authentication, digital certificates to verify application authenticity and SSL
communications to help protect the integrity and confidentiality of data
transmitted via Castanet. We offer a standard 40-bit encryption implementation
for international use and a 128-bit encryption implementation for domestic use
only. Our security implementation represents a combination of software written
by us and security code licensed to us by various vendors, including encryption
modules licensed from RSA Data Security and an SSL implementation from Netscape.
To
 
                                       40
<PAGE>   42
 
further enhance the breadth of our security offerings, we also recently licensed
a Java-based security implementation. We also have an arrangement with VeriSign
for the provision of digital certificates specifically for Castanet products.
See "Risk Factors -- We Rely on Third-Party Software and Applications."
 
     Most of our products are implemented using Sun Microsystems' Java
programming language. As a result, we believe that our products are extremely
portable, easy to internationalize, easily reconfigured and efficient. The use
of Java has proven to be a major advantage in developing portable components
without significantly increasing the engineering overhead as additional platform
support is required. We believe that our use of and expertise in Java provides
us a competitive advantage. See "Risk Factors -- We Rely on Third-Party Software
and Applications."
 
CUSTOMERS
 
   
     Our customer base spans multiple industry segments including financial
services, government, insurance, retail, manufacturing and telecommunications.
The following is a representative list of companies that have purchased over
$100,000 of Castanet products and services. We do not intend the identification
of these customers to imply that these customers are actively endorsing or
promoting our products.
    
 
American Management
 Systems
Arthur Andersen
Bear Stearns & Co.
Caterpillar
Charles Schwab
Cisco Systems
   
Daimler Chrysler
    
EarthLink Network
   
Edward Jones
    
Encanto Networks
Fireman's Fund
Ford Motor Company
Fujitsu
GE Medical Systems
Guardian Life Insurance
H&R Block
Hitachi IT
The Home Depot
Ingram Micro
Instinet
Intuit
Itochu
MECA Software
Merck & Co.
Mitchell International
Morgan Stanley Dean
 Witter & Co.
Samsung SDS
Seagate Technology
SegaSoft Networks
Sony Marketing
Sun Microsystems
SBC Warburg
 Dillon Read
The Thompson Financial
 Company
Toshiba
US WEST
Wausau Insurance
 
     The following examples span intranet, extranet and Internet e-business
applications, and illustrate how organizations are relying on Castanet to
provide a management infrastructure for business-to-employee,
business-to-business, and business-to-customer networked communications and
transactions.
 
     Business-to-Employee (Intranet Applications). The Home Depot and Cytec
sought to lower cost of operations, automate application installation and
maintenance and improve controlled access to information within their intranet
environments. These organizations are utilizing Castanet to distribute, manage
and maintain critical line-of-business applications to their employees, whether
they reside in headquarter locations, remote offices or field locations. The
Home Depot selected Castanet to automate deployment of its custom design
applications to 760 stores worldwide. Cytec relies on Castanet to manage its
supply chain application accessed daily by hundreds of employees in North
America.
 
   
     Business-to-Business (Extranet Applications). Seagate Technology and Ingram
Micro rely on Castanet's built-in security, bandwidth efficiency,
personalization features and support for disconnected use for combined intranet
and extranet applications. Seagate Technology is utilizing Castanet to deliver
and update business applications, including sales forecasting and pricing
information to its internal sales management, mobile sales force and external
OEM and distributor partners. Ingram Micro is utilizing Castanet to deploy and
maintain electronic commerce services to its network of resellers.
    
 
     Business-to-Customer (Internet Applications). Intuit and OnSale were
challenged with providing Internet applications to a large number of end users
where bandwidth efficiency, cross platform support and incremental,
transactional updates are key. Intuit embedded Castanet into its Quicken 99
personal finance software to enable its installed base of 10.5 million online
users to receive software and information updates transparently. OnSale, a
leading Internet auction retailer with over one million
 
                                       41
<PAGE>   43
 
registered users, built its BidWatch application on Castanet's infrastructure in
order to collect and display real-time bid information for up to 1,000
simultaneously active users.
 
   
     Many of our customers have gained measurable cost saving benefits through
their deployment of Castanet. We engaged the Hurwitz Group, an industry analyst
and research firm, to work with us to assess the amount of time required for
Castanet to pay for itself, or achieve a break-even return on investment for
selected customers. The net payback period represents the total amount of
anticipated time needed for the organization to recoup its initial investment in
terms of monthly cost savings. The cost savings include both reductions in costs
that the customer has achieved or expects to achieve, as well as anticipated
costs that the customer expects to avoid, by deploying Castanet. These cost
saving data are based on data provided by the customers, and have not been
independently verified. The following examples demonstrate the expected payback
period for Castanet in three diverse customer deployments.
    
 
<TABLE>
<CAPTION>
 
- ------------------------------------------------------------------------------------------------------------
                        USE OF                          INITIAL   ESTIMATED MONTHLY             NET PAYBACK
CUSTOMER                CASTANET                     INVESTMENT   COST SAVINGS                   PERIOD(1)
- ------------------------------------------------------------------------------------------------------------
<S>                     <C>                          <C>          <C>                  <C>        <C>
 Major                  Distribute and manage sales  $ 200,000    People savings:      $ 21,000   2 months
 Manufacturer           productivity applications                 Hardware savings:    $  5,000
                        to its remote/mobile sales                Network bandwidth
                        force and channel partners.               utilization
                                                                  savings:             $121,800
                                                                  Total:               $147,800
- ------------------------------------------------------------------------------------------------------------
 Computer Equipment     Distribute all internal      $1,000,000   People savings:      $165,000   4 months
 Manufacturer           business applications to                  Hardware savings:    $122,000
                        employees connected to                    Total:               $287,000
                        worldwide corporate
                        network.
- ------------------------------------------------------------------------------------------------------------
 Major Retail           Distribute, update and       $2,000,000   People savings:      $ 86,000   12 months
 Corporation            manage Windows applications               Hardware savings:    $ 25,000
                        over T1 lines to global                   Support call
                        retail network.                           savings:             $ 60,000
                                                                  Total:               $171,000
- ------------------------------------------------------------------------------------------------------------
</TABLE>
 
   
SALES, MARKETING AND DISTRIBUTION
    
 
     We market our Castanet products worldwide through a combination of a direct
sales force, resellers and distributors. Our worldwide direct sales, marketing
and business development organizations consisted of 72 individuals as of March
31, 1999, 43 of whom were located at our Mountain View, California headquarters,
23 in regional offices located in California, Georgia, Illinois, Michigan, New
York and Texas and six in our European office in the United Kingdom.
 
     Our sales, marketing and distribution approaches are designed to help
customers understand both the business and technical benefits of the products.
We have built an experienced consulting services organization to facilitate the
successful deployment of our products. We intend to expand our consulting
services organization and direct sales force and to establish additional sales
offices domestically and internationally. Competition for sales personnel is
intense, and we may not be able to attract, assimilate or retain additional
qualified personnel in the future. See "Risk Factors -- We Need to Develop and
Expand Our Sales, Marketing and Distribution Capabilities."
 
   
     We conduct a variety of marketing programs worldwide to educate our target
market, create awareness and generate leads for our Castanet solutions. To
achieve these goals, we have engaged in marketing activities including
e-business seminars, direct mailings, print and online advertising campaigns and
trade shows. These programs are targeted at key information technology
executives as well as vice presidents of marketing and general managers of
business units. In addition, we conduct comprehensive public relations programs
that include establishing and maintaining relationships with key trade press,
business press and industry analysts as well as an active executive speakers'
bureau. We have established and enforced consistent branding guidelines for all
of our channel partners in order to solidify our market position. We have also
initiated a
    
 
                                       42
<PAGE>   44
 
customer advisory council which provides a communication channel for regular
feedback from key customers to facilitate the design of products that meet the
expanding requirements of our target market.
 
   
     Tivoli has been a reseller of our products since 1997. We also have an
original equipment manufacturer agreement with Tivoli under which Tivoli is
building upon the Castanet infrastructure to develop a product called
Cross-Site. Any revenues from Tivoli under this original equipment manufacturer
agreement will be from per seat royalty payments on sales of Cross-Site that
contain the Castanet infrastructure. We expect Tivoli to release Cross-Site in
1999. However, the release of Cross-Site could be subject to significant delay.
Furthermore, because Cross-Site is a new product, Tivoli might fail to
successfully market and sell Cross-Site, and the level of demand for Cross-Site
is uncertain. Our reseller agreement with Tivoli expires upon the earlier of May
1, 1999 or written notice provided to us by Tivoli. If the release of Cross-Site
is delayed beyond May 1, 1999, Tivoli would no longer resell our Castanet
product unless we and Tivoli extended the term of the reseller agreement.
Furthermore, it is possible for Tivoli to terminate the reseller agreement
before the release of Cross-Site. For a more detailed description of the risks
of our relationship with Tivoli, see "Risk Factors -- We Depend on Our
Relationship with Tivoli."
    
 
     Netscape, a reseller of our products, accounted for $1.0 million, or
approximately 18%, of our revenues in 1997, and $3.8 million, or approximately
22% of our revenues in 1998. A majority of the $3.8 million of 1998 revenues was
recognized in the first half of 1998, with only $1.3 million in revenues
recognized in the second half of 1998. Netscape is no longer an active reseller,
and we do not expect material revenues from Netscape in the future.
 
   
     Markets outside the United States are currently served by our direct sales
office in the United Kingdom as well as independent distributors and resellers
covering countries in Europe and Asia. Our distributors purchase our Castanet
products at discounts from end-user list prices. Sales under the agreements are
denominated in U.S. dollars. Foreign sales are subject to risks, including
exchange rate fluctuations, internal monetary conditions, tariffs, import
licenses, trade policies and domestic and foreign tax policies. For more
information on risks related to foreign sales see "Risk Factors -- Expanding
Internationally Is Expensive, We May Receive No Benefit from Our Expansion and
Our International Operations are Subject to Governmental Regulation."
    
 
   
     We may not be able to enter into agreements or establish relationships with
desired distribution partners on a timely basis, or at all, and our distribution
partners may not devote adequate resources to selling our products. For more
information on risks related to third-party distribution channels see "Risk
Factors -- We Need to Develop and Expand Our Sales, Marketing and Distribution
Capabilities."
    
 
CUSTOMER SUPPORT AND TRAINING
 
     Our customer support and training organization consisted of 15 employees as
of March 31, 1999. We offer a variety of customer support services to meet
specific needs including an option to purchase support on a per-question basis
or an annual subscription service that provides customers with the latest
product updates as they become available. In addition, we also offer the
following annual service packages:
 
     Bronze Service. This service provides customers with technical assistance
on installation and basic product questions via e-mail and/or telephone, as well
as access to our customer support engineers. With this service, customers also
receive the latest product updates as they become available.
 
     Silver Service. This program includes all the features of the Bronze
Service offering with the addition of coverage 24 hours a day, every day of the
week.
 
     Gold Service. Designed for mission-critical applications, the Gold Service
program provides customers with all the features of the Silver Service plus
early access to product beta releases and proactive support from designated
technical account managers.
 
                                       43
<PAGE>   45
 
   
     Customers that license our products typically engage our professional
services organization to assist with support, training and consulting. We
believe that growth in our product sales depends on our ability to provide our
customers with these services and to educate third-party resellers and
consultants on how to provide similar services. As a result, we plan to increase
the number of our service personnel to meet these needs. Please see "Risk
Factors -- We Need to Expand Our Professional Services."
    
 
RESEARCH AND DEVELOPMENT
 
     As of March 31, 1999, our engineering organization was comprised of 51
employees responsible for product development, quality assurance, documentation,
localization and porting. Our development organization is divided into four
groups: infrastructure and production tools, management tools, applications and
advanced development.
 
     - The infrastructure and production tools group is focused on enhancing the
       functionality, reliability, performance and flexibility of our products
       and expanding the ability of Castanet to operate with leading operating
       systems.
 
     - Our management tools group is focused on developing enterprise-level
       products that address additional Internet services management functions
       to complement our current product family, and to expand our coverage of
       the Internet services management market. These products are being
       developed to add functionality to our existing product family by allowing
       customers to collect system and application inventory information,
       control subscription and configuration and monitor the status of
       endpoints.
 
   
     - The applications group focuses on developing solutions including document
       management to end users and bi-directional data management between remote
       offices and stores, to address specific enterprise problems that will
       directly benefit and leverage our product line.
    
 
     - Our advanced development group defines architecture and engages in
       speculative and forward-looking engineering with the intention that the
       results may become products in the future.
 
     These four development groups are supported by the quality assurance,
documentation, localization and porting groups. The quality assurance group
implements a process designed to identify software defects through the entire
development cycle. The documentation group is responsible for end user,
administrator and developer documentation for our products. The localization
group is responsible for internationalizing our products while in development as
well as performing the language-specific localization after the English version
is produced. The porting group is responsible for any changes to the source code
required to allow a product to run on platforms other than the two core
development platforms of Solaris and Windows.
 
     We believe that our software development team and core technologies
represent a significant competitive advantage. The software development team
includes a number of key members from the engineering team that developed the
Java programming language and Java virtual machines at Sun Microsystems.
 
   
     A technically skilled, quality oriented and highly productive development
organization will be a key component of the success of new product offerings. We
must attract and retain highly qualified employees to further our research and
development efforts. Our business and operating results could be seriously
harmed if we are not able to hire and retain the required number of individuals.
    
 
   
     Research and development expenses were $2.4 million in 1997 and $5.8
million in 1998. To date, substantially all software development costs have been
expensed as incurred and developed by our employees. We believe that significant
investments in research and development are required to remain competitive. As a
consequence, we intend to continue to increase the absolute amount of our
research and development expenditures in the future. For more information on our
research and development
    
 
                                       44
<PAGE>   46
 
   
expenses, see 'Management's Discussion and Analysis of Financial Condition and
Results of Operations."
    
 
   
     We cannot be sure that existing and future development efforts will be
completed within our anticipated schedules or that they will have the features
to make them successful. Future delays or problems in the development of product
enhancements or new products could seriously harm our business and operating
results. Furthermore, despite our testing and testing by our customers, errors
might be found in our products, which we are unable to successfully correct in a
timely and cost-effective manner. If we are not able to develop new products,
enhancements to existing products or correct errors on a timely and
cost-effective basis, or if these new products or enhancements do not have the
features necessary to make them successful, our business and operating results
will be seriously harmed. Furthermore, we currently license externally developed
technology and will continue to evaluate externally developed technologies for
integration into our product lines. See "Risk Factors -- Our Success Depends on
Our Castanet Product Family and New Product Development," "-- Software Defects
in Castanet Would Harm Our Business" and "-- We Must Respond to Rapid
Technological Change and Evolving Industry Standards."
    
 
COMPETITION
 
     The market for Internet services management solutions is new, intensely
competitive and rapidly evolving. We expect competition to continue to increase
both from existing competitors and new market entrants. We believe that our
ability to compete depends on many factors both within and beyond our control,
including:
 
     - the ease of use, performance, features, price and reliability of our
       solutions as compared to those of our competitors;
 
     - the timing and market acceptance of new solutions and enhancements to
       existing solutions developed by us and our competitors;
 
     - the quality of our customer service; and
 
     - the effectiveness of our sales and marketing efforts.
 
   
     We encounter current or potential competition from a number of different
sources, including sellers of enterprise-wide management systems, which include
electronic software distribution, including Tivoli, Computer Associates and BMC
Software; companies such as BackWeb, Novadigm, and Sterling Commerce, through
its subsidiary XcelleNet, which market products that support the distribution of
software applications; and desktop software management suites, such as
Microsoft's SMS and Intel's LanDesk.
    
 
     In addition, we compete with various methods of application distribution
and management, including the web browser, and with application server vendors
and others which have introduced software distribution capabilities into their
products.
 
     Some of our competitors have longer operating histories and significantly
greater financial, technical, marketing and other resources than we do. Many of
these companies have broader customer relationships that could be leveraged,
including relationships with many of our customers. These companies also have
more established customer support and professional services organizations than
we do. In addition, these companies may adopt aggressive pricing policies. As a
result, we may not be able to maintain a competitive position against current or
future competitors.
 
     As new participants enter the Internet services management market, we will
face increased competition. Potential competitors may bundle their products or
incorporate an Internet services management component into existing products in
a manner that discourages users from purchasing our products. Furthermore, it is
possible that new competitors or alliances among competitors may emerge
 
                                       45
<PAGE>   47
 
and rapidly acquire significant market share. Our competitors may be able to
respond more quickly to new or emerging technologies and changes in customer
requirements than we can.
 
PROPRIETARY RIGHTS AND LICENSING
 
   
     Our success and ability to compete are dependent on our ability to develop
and maintain the proprietary aspects of our technology. We rely on a combination
of patent, trademark, trade secret, and copyright law and contractual
restrictions to protect the proprietary aspects of our technology. We presently
have three U.S. patent applications, and several trademark registrations and
applications in the United States and some foreign countries. Our patent and
trademark applications might not result in the issuance of any valid patents or
trademarks. We seek to protect our source code for our software, documentation
and other written materials under trade secret and copyright laws. We license
our software under signed license agreements, which impose restrictions on the
licensee's ability to utilize the software. Finally, we seek to avoid disclosure
of our intellectual property by requiring employees and consultants with access
to our proprietary information to execute confidentiality agreements with us and
by restricting access to our source code.
    
 
   
     Despite our efforts to protect our proprietary rights, unauthorized parties
may attempt to copy aspects of our products or to obtain and use information
that we regard as proprietary. In addition, we sell our products
internationally. The laws of many countries do not protect our proprietary
rights to as great an extent as do the laws of the United States. Litigation may
be necessary in the future to enforce our intellectual property rights, to
protect our trade secrets, and to determine the validity and scope of the
proprietary rights of others. Any resulting litigation could result in
substantial costs and diversion of resources and could have a material adverse
effect on our business operating results.
    
 
     Our success and ability to compete are also dependent on our ability to
operate without infringing upon the proprietary rights of others. In the event
of a successful claim of infringement against us and our failure or inability to
license the infringed technology, our business and operating results would be
significantly harmed. Currently, we are engaged in litigation with Novadigm
concerning the alleged infringement by us of a patent held by Novadigm which is
described in detail in this section under "Legal Proceedings."
 
LEGAL PROCEEDINGS
 
   
     On March 3, 1997, Novadigm filed a complaint against us in the United
States District Court for the Northern District of California, alleging
infringement by us of a patent held by Novadigm (U.S. Patent No. 5,581,764, the
"Novadigm Patent"). Novadigm alleges that our infringement relates to certain
methods for updating data and software over a computer network that we use in
our Castanet products. Novadigm later identified claims 1, 4, 5, 23, 24, 25, 31,
33 and 34 of the Novadigm Patent as being infringed. In its complaint, Novadigm
requests preliminary and permanent injunctions prohibiting us and other
specified persons from making, using or selling any infringing products, and
claims damages, costs and attorneys' fees. The complaint also alleges that we
have willfully infringed the Novadigm Patent and seeks up to triple damages
under the United States Patent Act.
    
 
   
     On May 2, 1997, we filed our answer to Novadigm's complaint and filed a
counterclaim against Novadigm. Our answer denies Novadigm's allegations and
asserts defenses to Novadigm's claim. Our counterclaim seeks a declaratory
judgment that we do not infringe the Novadigm Patent and that the Novadigm
Patent is invalid and unenforceable. On October 3, 1997, we received an opinion
from outside patent opinion counsel, Blakely, Sokoloff, Taylor & Zafman, LLP,
that Castanet 1.0 did not infringe the Novadigm Patent. Blakely, Sokoloff,
Taylor & Zafman, LLP does not serve as our patent litigation counsel in this
lawsuit and has not advised us since October 3, 1997. Since then, we have
released three new major versions of Castanet. Although we do not believe that
any changes to Castanet made in the newer versions cause Castanet to infringe
any claim of the Novadigm Patent, the opinion of Blakely,
    
 
                                       46
<PAGE>   48
 
   
Sokoloff, Taylor & Zafman, LLP did not address the three new versions of
Castanet that we have released since October 3, 1997.
    
 
   
     On August 25, 1997 and January 26, 1998, we filed motions for summary
adjudication asking the court to rule that one of the relevant claims of the
Novadigm Patent is invalid because it was anticipated by two prior art
references. In response to each motion, Novadigm argued that the motion was
premature because it pre-dated the court's claim construction proceedings,
because only limited discovery had been taken, and because our motion failed to
demonstrate that we were entitled to summary adjudication. The court denied our
motions in part because (1) discovery was ongoing, (2) the court had not had an
opportunity to construe the relevant language in the Novadigm Patent and (3) the
court found there were triable issues of fact as to the disclosures in those
references. The court stated that we could re-file our motions once discovery
has been substantially completed and after it had held a claims construction
hearing.
    
 
   
     On December 17, 1998, the court held a claims construction hearing on the
appropriate interpretation of certain terms in the Novadigm Patent, and on
December 28, 1998, the court issued an order defining those terms.
    
 
     On January 19, 1999, Novadigm detailed its position as to why Castanet
Version 1.1 infringes the asserted claims of the Novadigm Patent and contended
that the alleged comparison of file level and channel level checksums in
non-optimized updating and the comparison of channel level checksums and their
associated update commands in optimized updating infringes the claims of the
Novadigm Patent. Novadigm's claim is not limited to Version 1.1, and Novadigm
has also stated that it believes that all or some code from subsequent versions
of Castanet work substantially the same way. We do not believe that Novadigm
accurately states the functionality of Castanet Version 1.1 or establishes that
Castanet Version 1.1 infringes the Novadigm Patent. We also do not believe that
the relevant portions of other versions of Castanet work in substantially the
same way or infringe on any claim of the Novadigm Patent. However, it is
possible that Novadigm may allege additional ways in which Castanet infringes
claims of the Novadigm Patent in the future.
 
     To date, both parties have conducted substantial discovery. We expect that
in the first half of 1999, the parties will complete discovery, including the
exchange of expert reports. If the court does not enter judgment based on any
dispositive motions, a jury trial of this action is currently scheduled to begin
in September 1999.
 
   
     We believe that we have strong defenses against Novadigm's lawsuit.
Accordingly, we intend to defend this suit vigorously. However, we may not
prevail in this litigation. Litigation is subject to inherent uncertainties,
especially in cases such as this where sophisticated factual issues must be
assessed and complex technical issues must be decided. In addition, cases
similar to this involve issues of law that are evolving, presenting further
uncertainty. Our defense of this litigation, regardless of the merits of the
complaint, has been, and will likely continue to be, time-consuming, costly and
a diversion for our technical and management personnel. In addition, publicity
related to this litigation has in the past, and will likely in the future, have
a negative impact on the sale of our Castanet products.
    
 
     A failure to prevail in the litigation could result in:
 
     - our paying monetary damages, which could be tripled if the infringement
       is found to have been willful, and which may include paying an ongoing
       royalty to Novadigm for the sales of Castanet products or paying lost
       profits to Novadigm for particular sales in which we competed with
       Novadigm and closed a sale;
 
     - the issuance of a preliminary or permanent injunction requiring us to
       stop selling Castanet in its current form;
 
                                       47
<PAGE>   49
 
   
     - our having to redesign Castanet, which could be costly and time consuming
       and could substantially delay Castanet shipments, assuming that a
       redesign is feasible;
    
 
     - our having to reimburse Novadigm for some or all of its attorneys' fees;
 
     - our having to obtain from Novadigm a license to its patent, which license
       might not be made available to us on reasonable terms, particularly
       because Novadigm is a competitor; or
 
     - our having to indemnify our customers against any losses they may incur
       due to the alleged infringement.
 
   
     Any of these results would seriously harm our business and operating
results. Furthermore, we expect to continue to incur substantial costs in
defending against this litigation and these costs could increase significantly
if our dispute goes to trial. It is possible that these costs could
substantially exceed our expectations in future periods.
    
 
     EMPLOYEES
 
     At March 31, 1999, we had a total of 162 employees, 156 of whom were based
in the United States and 6 of whom were based in the United Kingdom. Of the
total, 51 were in research and development, 72 were engaged in sales, marketing
and business development, 15 were engaged in customer support and training, and
24 were in administration and finance. None of our employees is subject to a
collective bargaining agreement and we believe that our relations with our
employees are good.
 
     FACILITIES
 
   
     Our principal administrative, sales, marketing, and research and
development facility occupies approximately 47,500 square feet in Mountain View,
California under a lease which expires in April 2000. We also have regional
offices located in California, Georgia, Illinois, Michigan, New York and Texas
and a European office in the United Kingdom. We believe that our existing
facilities are adequate for our current needs and that suitable additional or
alternative space will be available in the future on commercially reasonable
terms as needed.
    
 
                                       48
<PAGE>   50
 
                                   MANAGEMENT
 
EXECUTIVE OFFICERS, KEY EMPLOYEES AND DIRECTORS
 
     Our executive officers, key employees and directors, and their ages as of
April 1, 1999, are as follows:
 
   
<TABLE>
<CAPTION>
            NAME              AGE                         POSITION
            ----              ---                         --------
<S>                           <C>   <C>
Kim K. Polese...............  37    President, Chief Executive Officer and Director
Arthur A. van Hoff..........  36    Chief Technology Officer and Director
Steven P. Williams..........  36    Executive Vice President, Worldwide Sales and
                                      Chief Operating Officer
Fred M. Gerson..............  48    Vice President, Finance and Chief Financial Officer
Thomas E. Banahan...........  40    Vice President, Business Development
Robert E. Currie............  31    Vice President, Engineering
Jacqueline Ross.............  41    Vice President, Marketing
Jonathan Payne..............  34    Senior Engineer
Sami Shaio..................  35    Senior Engineer
Aneel Bhusri................  33    Director
Raymond J. Lane.............  52    Director
Douglas J. Mackenzie........  39    Director
Stratton D. Sclavos.........  37    Director
</TABLE>
    
 
- ---------------
   
     Kim K. Polese, a founder of Marimba, has served as President, Chief
Executive Officer and a director of Marimba since our inception in February
1996. Before co-founding Marimba, Ms. Polese served in several marketing
positions at Sun Microsystems, an enterprise networking company, from January
1989 until January 1996, most recently as Senior Product Manager. From January
1986 to December 1988, Ms. Polese was a Technical Support Engineer for
Intellicorp, Inc., an expert systems software company. Ms. Polese received her
B.A. in Biophysics from the University of California at Berkeley.
    
 
   
     Arthur A. van Hoff, a founder of Marimba, has served as Chief Technology
Officer and a director of Marimba since our inception in February 1996. Before
co-founding Marimba, from February 1993 until February 1996, Mr. van Hoff held
various engineering positions at Sun Microsystems, most recently as Senior Staff
Engineer. Mr. van Hoff received his M. Phil. in Computer Science from
Strathclyde University in Glasgow, Scotland and a postgraduate degree in
Computer Science from Hogere Informatica Opleiding in Enschede, Holland.
    
 
   
     Steven P. Williams has served as Marimba's Executive Vice President,
Worldwide Sales and Chief Operating Officer since April 1999 and as our Vice
President, Worldwide Sales since November 1996. Before joining Marimba, Mr.
Williams served as Vice President, Western Sales from March 1996 to November
1996 and before that as Director, Western Sales from March 1992 to March 1996,
for Tivoli, a systems management software company. Mr. Williams received his
B.S. in Electrical Engineering from California Polytechnic State University, San
Luis Obispo.
    
 
   
     Fred M. Gerson has served as Marimba's Vice President, Finance and Chief
Financial Officer since October 1997. Before joining Marimba, Mr. Gerson served
as Vice President and Chief Financial Officer for Maxis, Inc., a consumer
entertainment software company, from November 1994 to October 1997, and from
November 1992 to November 1994, he served as Vice President and Chief Financial
Officer of Farallon Computing, Inc. (currently Netopia, Inc.), a communications
software and hardware company. Mr. Gerson received his B.A. in Economics from
City University of New York-Brooklyn College and his M.B.A. from New York
University.
    
 
                                       49
<PAGE>   51
 
     Thomas E. Banahan has served as Marimba's Vice President, Business
Development since December 1996. Mr. Banahan was Vice President, Worldwide Sales
of Spyglass, Inc., an Internet software and service provider, from August 1994
to November 1996, and from March 1988 to July 1994, he was a Vice President of
Sales of Comdisco, Inc., a technology services company. Mr. Banahan received his
B.A. in Business Economics from the University of California, Santa Barbara.
 
     Robert E. Currie has served as Marimba's Vice President, Engineering since
August 1996. From December 1988 to January 1995, Mr. Currie held various
engineering positions at Digidesign, Inc., a digital audio technology company
(currently a division of Avid Technology), most recently as Vice President,
Software Engineering. Mr. Currie received his B.S. in Electrical Engineering and
Computer Science from the University of California at Berkeley.
 
   
     Jacqueline Ross has served as Marimba's Vice President, Marketing since
August 1998. From June 1996 to July 1998, Ms. Ross served as Vice President,
Marketing for Check Point Software Technologies, Ltd., a provider of secure
enterprise networking solutions. From January 1995 to May 1996, Ms. Ross was
Vice President, Marketing of Cambio Networks Inc., an enterprise management
software company, and before that served as the Director of Field Marketing at
Hughes LAN Systems, a hardware vendor, from July 1991 to December 1994. Ms. Ross
received her B.A. and B.B.A. from Kent State University and her M.B.A. from
Stanford University.
    
 
   
     Jonathan Payne, a founder of Marimba, has served as a Senior Engineer for
Marimba since our inception in February 1996. Before co-founding Marimba, Mr.
Payne was a Senior Engineer at Starwave Corporation, an Internet services
company, from February 1995 to February 1996. From June 1988 until February
1995, Mr. Payne served in various engineering positions at Sun Microsystems. Mr.
Payne received his B.A. in Cognitive Science from the University of Rochester.
    
 
   
     Sami Shaio, a founder of Marimba, has served as a Senior Engineer of
Marimba since our inception in February 1996. Before co-founding Marimba, from
May 1989 until February 1996, Mr. Shaio held various engineering positions at
Sun Microsystems, most recently as Senior Staff Engineer. Mr. Shaio received his
A.B. and A.M. in Linguistics, as well as his B.S. in Computer Science, from
Stanford University. Mr. Shaio received his M.S. in Computer Science from the
University of Michigan.
    
 
   
     Aneel Bhusri has served as a director of Marimba since February 1999. Mr.
Bhusri has been a General Partner at Greylock Management Corporation, a national
venture capital firm, since April 1999. Mr. Bhusri has served as the Vice
Chairman of PeopleSoft since March 1999. Before his current position at
PeopleSoft, Mr. Bhusri served as the Senior Vice President of Product Strategy,
Business Development and Marketing for PeopleSoft, an enterprise software
company from April 1997 to March 1999. Before this position at PeopleSoft, Mr.
Bhusri served as Senior Vice President of Product Strategy from November 1995 to
April 1997. From April 1995 to November 1995, Mr. Bhusri served as Vice
President of Product Strategy and from August 1993 to April 1995 as Director of
Product Strategy. Before joining PeopleSoft, Mr. Bhusri was an associate at
Norwest Venture Capital from June 1992 to March 1993. From 1988 to 1991, he was
a financial analyst in Morgan Stanley's Corporate Finance Department. Mr. Bhusri
received his B.S. in Electrical Engineering and his B.A. in Economics from Brown
University, and his M.B.A. from Stanford University.
    
 
   
     Raymond J. Lane has served as a director of Marimba since October 1997. Mr.
Lane has been the President and Chief Operating Officer of Oracle Corporation, a
database software company, since January 1997. Before his position as President
and Chief Operating Officer, Mr. Lane served as the Executive Vice President of
Worldwide Operations for Oracle from October 1993 to January 1997, and has been
a Director of Oracle since June 1995. Mr. Lane served as a Senior Vice President
of Oracle USA from June 1992 to October 1993. Before joining Oracle, Mr. Lane
served as Senior Vice President and Managing Partner of the Worldwide
Information Technology Group at Booz, Allen & Hamilton, a management consulting
firm, from July 1986 to May 1992. He served on the Booz, Allen & Hamilton
    
 
                                       50
<PAGE>   52
 
Executive Committee and its Board of Directors from April 1987 to May 1992. Mr.
Lane is also a member of the Board of Trustees of Carnegie Mellon University.
Mr. Lane received his B.S. in Math from West Virginia University.
 
   
     Douglas J. Mackenzie has served as a director of Marimba since August 1996.
Since June 1989, Mr. Mackenzie has been employed with Kleiner Perkins Caufield &
Byers, a venture capital firm, of which he has been a General Partner since
1994. Before joining Kleiner Perkins, Mr. Mackenzie held senior level sales,
marketing, and operations positions in Eczel Corporation, a reseller of
microcomputer products, from October 1983 to August 1987. From March 1982 to
October 1983, Mr. Mackenzie served as a management consultant at Booz, Allen &
Hamilton. Mr. Mackenzie serves as a director of Visio Corporation, a business
drawing and diagramming software company, as well as several private
technology-based companies. Mr. Mackenzie received his A.B. in Economics and his
M.S. in Industrial Engineering from Stanford University and his M.B.A. from
Harvard University.
    
 
     Stratton D. Sclavos has served as a director of Marimba since February
1999. Mr. Sclavos has been the President, Chief Executive Officer and a director
of VeriSign since he joined VeriSign in July 1995. From October 1993 to June
1995, Mr. Sclavos was Vice President, Worldwide Marketing and Sales of Taligent,
Inc., a software development company that was a joint venture among Apple
Computer, Inc., IBM and Hewlett-Packard. From May 1992 to September 1993, Mr.
Sclavos was Vice President of Worldwide Sales and Business Development of GO
Corporation, a pen-based computer company. Mr. Sclavos is also a director and a
member of the compensation committee of Network Solutions, Inc. Mr. Sclavos
received his B.S. degree in Electrical and Computer Engineering from the
University of California, Davis.
 
BOARD COMMITTEES
 
     The board of directors has a compensation committee and an audit committee.
 
     Compensation Committee. The compensation committee of the board of
directors reviews and makes recommendations to the board regarding all forms of
compensation provided to the executive officers and directors of Marimba and our
subsidiary including stock compensation and loans. In addition, the compensation
committee reviews and makes recommendations on bonus and stock compensation
arrangements for all of our employees. As part of these responsibilities the
compensation committee also administers our 1996 Stock Plan, 1999 Omnibus Equity
Incentive Plan and 1999 employee stock purchase plan. The current members of the
compensation committee are Messrs. Lane and Mackenzie.
 
   
     Audit Committee. The audit committee of the board of directors reviews and
monitors our corporate financial reporting and our internal and external audits,
including our internal audit and control functions, the results and scope of the
annual audit and other services provided by our independent auditors and our
compliance with legal matters that have a significant impact on our financial
reports. The audit committee also consults with management and our independent
auditors before the presentation of financial statements to stockholders and, as
appropriate, initiates inquiries into aspects of our financial affairs. In
addition, the audit committee has the responsibility to consider and recommend
the appointment of, and to review fee arrangements with, our independent
auditors. The current members of the audit committee are Messrs. Bhusri,
Mackenzie and Sclavos.
    
 
DIRECTOR COMPENSATION
 
   
     Most directors who are not our employees have received grants of options to
purchase shares of our common stock. Upon and following this offering,
non-employee directors will receive automatic option grants under our 1999
Non-Employee Directors Option Plan.
    
 
                                       51
<PAGE>   53
 
COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION
 
   
     The compensation committee of the board of directors currently consists of
Messrs. Lane and Mackenzie. No interlocking relationship exists between any
member of our board of directors or our compensation committee and any member of
the board of directors or compensation committee of any other company, and no
interlocking relationship has existed in the past.
    
 
INDEMNIFICATION
 
     Our Third Amended and Restated Certificate of Incorporation, to be
effective after the closing of this offering, includes a provision that
eliminates the personal liability of our directors and officers for monetary
damages for breach of fiduciary duty as a director or officer, except for
liability:
 
     - for any breach of the director's or officer's duty of loyalty to us or
       our stockholders;
 
     - for acts or omissions not in good faith or that involve intentional
       misconduct or a knowing violation of law;
 
     - under Section 174 of the Delaware General Corporation Law regarding
       unlawful dividends and stock purchases; or
 
     - for any transaction from which the director or officer derived an
       improper personal benefit.
 
These provisions are permitted under Delaware law.
 
     Our bylaws provide that:
 
     - we must indemnify our directors and officers to the fullest extent
       permitted by Delaware law, subject to very limited exceptions;
 
     - we may indemnify our other employees and agents to the same extent that
       we indemnified our officers and directors; and
 
     - we must advance expenses, as incurred, to our directors and officers in
       connection with a legal proceeding to the fullest extent permitted by
       Delaware law, subject to very limited exceptions.
 
   
     We have also entered into indemnification agreements with our officers and
directors containing provisions that may require us to indemnify our officers
and directors against 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.
    
 
                                       52
<PAGE>   54
 
EXECUTIVE COMPENSATION
 
   
     The following table presents compensation information for 1998 paid by us
for services by our chief executive officer and our four other highest-paid
executive officers whose total salary and bonus for the fiscal year exceeded
$100,000:
    
 
                           SUMMARY COMPENSATION TABLE
 
<TABLE>
<CAPTION>
                                                                   LONG-TERM
                                                                  COMPENSATION
                                                                  ------------
                                                                     AWARDS
                                                                  ------------
                                           ANNUAL COMPENSATION     SECURITIES
                                           --------------------    UNDERLYING       ALL OTHER
       NAME AND PRINCIPAL POSITION         SALARY($)   BONUS($)    OPTIONS(#)    COMPENSATION($)
       ---------------------------         ---------   --------   ------------   ---------------
<S>                                        <C>         <C>        <C>            <C>
Kim K. Polese............................  $130,000          --          --           $930(1)
  President and Chief Executive Officer
Steven P. Williams(2)....................   125,000     125,000      50,000             --
  Executive Vice President, Worldwide
  Sales and Chief Operating Officer
Thomas E. Banahan........................   125,000    $100,000          --             --
  Vice President, Business Development
Robert E. Currie.........................   137,000          --      70,000             --
  Vice President, Engineering
Fred M. Gerson...........................   165,000          --          --             --
  Vice President, Finance and
  Chief Financial Officer
</TABLE>
 
- -------------------------
(1) Represents premiums paid by us for term life insurance.
 
(2) Mr. Williams was our Vice President, Worldwide Sales during 1998.
 
                                       53
<PAGE>   55
 
   
     The following table designates each grant of stock options during 1998 to
our chief executive officer and our four other highest-paid executive officers.
No stock appreciation rights were granted to these individuals during 1998.
    
 
   
     The figures representing percentages of total options granted to employees
in the last fiscal year are based on a total of 2,017,800 option shares granted
to our employees under our 1996 Stock Plan during 1998.
    
 
   
     The exercise price of each option granted is equal to the fair market value
of our common stock as valued by our board of directors on the date of grant.
The exercise price may be paid in cash, in shares of our common stock valued at
fair market value on the exercise date or through a cashless exercise procedure
involving a same-day sale of the purchased shares. We may also finance the
option exercise by lending the optionee sufficient funds to pay the exercise
price for the purchased shares.
    
 
   
     The potential realizable value is calculated based on the ten-year term of
the option at the time of grant. Stock price appreciation of 5% and 10% is
assumed according to rules promulgated by the Securities and Exchange Commission
and does not represent our prediction of our stock price performance. The
potential realizable value at 5% and 10% appreciation is calculated by assuming
that the exercise price on the date of grant appreciates at the indicated rate
for the entire term of the option and that the option is exercised at the
exercise price and sold on the last day of its term at the appreciated price.
    
 
   
                       OPTION GRANTS IN LAST FISCAL YEAR
    
 
<TABLE>
<CAPTION>
                                                INDIVIDUAL GRANTS                     POTENTIAL REALIZABLE
                              -----------------------------------------------------     VALUE AT ASSUMED
                              NUMBER OF                                                  ANNUAL RATES OF
                              SECURITIES                                                   STOCK PRICE
                              UNDERLYING     % OF TOTAL                                 APPRECIATION FOR
                               OPTIONS     OPTIONS GRANTED   EXERCISE                      OPTION TERM
                               GRANTED      TO EMPLOYEES       PRICE     EXPIRATION   ---------------------
            NAME                (#)(1)     IN FISCAL YEAR     ($/SH)        DATE         5%          10%
            ----              ----------   ---------------   ---------   ----------   ---------   ---------
<S>                           <C>          <C>               <C>         <C>          <C>         <C>
Kim K. Polese...............        --            --              --            --          --          --
Steven P. Williams..........    50,000           2.5            8.50      12/17/08     267,280     677,341
Thomas E. Banahan...........        --            --              --            --          --          --
Robert E. Currie............    50,000           2.5%          $3.00      08/27/08    $ 94,334    $239,061
                                20,000           1.0            1.00      01/06/08      12,578      31,875
Fred M. Gerson..............        --            --              --            --          --          --
</TABLE>
 
- -------------------------
   
(1) Each of the options listed in the table is immediately exercisable. The
    shares purchased under the options may be repurchased by us at the original
    exercise price paid per share if the optionee ceases service with us before
    vesting in these shares. For Mr. Currie's option covering 50,000 shares and
    Mr. Williams' option covering 50,000 shares, the repurchase right lapses and
    the optionee vests as to 25% of the option shares upon completion of 12
    months of service from the vesting start date, and the balance of the option
    shares vests in a series of equal monthly installments over the next three
    years of service. For Mr. Currie's option covering 20,000 shares, the
    repurchase right lapses and he vests as to 33 1/3% of the option shares upon
    completion of 12 months of service from the vesting start date, and the
    balance of the option shares vests in a series of equal monthly installments
    over the next two years of service. The option shares will fully vest if
    Marimba is acquired in a merger or asset sale, unless our repurchase right
    with respect to the unvested option shares is transferred to the acquiring
    entity. Each of the options has a ten-year term, but the term may end
    earlier if the optionee ceases service with Marimba.
    
 
                                       54
<PAGE>   56
 
   
     On April 19, 1999, our board of directors granted to the following
executive officers options to purchase shares of our common stock at an exercise
price per share of $15.00: Mr. Williams received an option to purchase 300,000
shares; Mr. Currie received an option to purchase 100,000 shares; and Mr. Gerson
received an option to purchase 50,000 option shares.
    
 
   
     The following table presents for our chief executive officer and our four
other highest-paid executive officers the number and value of securities
underlying unexercised options that are held by these executive officers as of
December 31, 1998. No options or stock appreciation rights were exercised by
these executive officers in 1998, and no stock appreciation rights were
outstanding at the end of that year.
    
 
   
     Each of the options listed in the table is immediately exercisable. The
shares purchased under the options may be repurchased by us at the original
exercise price paid per share if the optionee ceases service with us before
vesting in these shares. The heading Vested refers to shares that are no longer
subject to our repurchase right; the heading Unvested refers to shares subject
to our repurchase right as of December 31, 1998.
    
 
   
     The figures in the "value of unexercised in-the-money options at fiscal
year end" column are based on the fair market value of our common stock at the
end of 1998 of $8.50 per share, less the exercise price payable for these
shares.
    
 
                         FISCAL YEAR-END OPTION VALUES
 
<TABLE>
<CAPTION>
                                                      NUMBER OF
                                                SECURITIES UNDERLYING            VALUE OF
                                                 UNEXERCISED OPTIONS           UNEXERCISED
                                                    AT FISCAL YEAR         IN-THE-MONEY OPTIONS
                                                        END(#)            AT FISCAL YEAR END($)
                                                ----------------------    ----------------------
                     NAME                        VESTED      UNVESTED      VESTED      UNVESTED
                     ----                       --------    ----------    ---------    ---------
<S>                                             <C>         <C>           <C>          <C>
Kim K. Polese.................................       --           --            --           --
Steven P. Williams............................   19,444       80,556       155,552      244,448
Thomas E. Banahan.............................       --           --            --           --
Robert E. Currie..............................    6,667       63,333      $ 50,003     $374,998
Fred M. Gerson................................       --           --            --           --
</TABLE>
 
- -------------------------
   
EMPLOYEE BENEFIT PLANS
    
 
     1999 OMNIBUS EQUITY INCENTIVE PLAN
 
     Our 1999 Omnibus Equity Incentive Plan was adopted by our board of
directors on February 2, 1999. We will also seek stockholder approval of this
plan. We have reserved 1,250,000 shares of our common stock for issuance under
the 1999 Omnibus Equity Incentive Plan. As of January 1 of each year, starting
in 2000, the number of shares reserved for issuance under our 1999 Omnibus
Equity Incentive Plan will be increased automatically by 4% of the total number
of shares of common stock then outstanding or, if less, 1,250,000 shares. No
options have yet been granted under the 1999 Omnibus Equity Incentive Plan.
 
     Under the 1999 Omnibus Equity Incentive Plan, the individuals eligible to
receive awards are:
 
     - employees;
 
     - non-employee members of the board of directors; and
 
     - consultants.
 
     The types of awards that may be made under the 1999 Omnibus Equity
Incentive Plan are:
 
     - options to purchase shares of common stock;
 
     - stock appreciation rights;
 
                                       55
<PAGE>   57
 
     - restricted shares; and
 
     - stock units.
 
   
     Options may be incentive stock options that qualify for favorable tax
treatment for the optionee under Section 422 of the Internal Revenue Code of
1986 or nonstatutory stock options not designed to qualify for favorable tax
treatment. With limited restrictions, if shares awarded under the 1999 Omnibus
Equity Incentive Plan are forfeited, those shares will again become available
for new awards under the 1999 Omnibus Equity Incentive Plan.
    
 
     The compensation committee of our board of directors administers the 1999
Omnibus Equity Incentive Plan. The committee has complete discretion to make all
decisions relating to the interpretation and operation of our 1999 Omnibus
Equity Incentive Plan. The committee has the discretion to determine which
eligible individuals are to receive any award, and to determine the type,
number, vesting requirements and other features and conditions of each award.
 
     The exercise price for incentive stock options granted under the 1999
Omnibus Equity Incentive Plan may not be less than 100% of the fair market value
of our common stock on the option grant date. The exercise price for
non-statutory options granted under the 1999 Omnibus Equity Incentive Plan may
not be less than 85% of the fair market value of our common stock on the option
grant date.
 
     Our 1999 Omnibus Equity Incentive Plan provides that no participant may
receive options or stock appreciation rights covering more than 100,000 shares
in the same year, except that a newly hired employee may receive options or
stock appreciation rights covering up to 300,000 shares in the first year of
employment.
 
     The exercise price may be paid with:
 
     - cash;
 
     - outstanding shares of common stock;
 
     - the cashless exercise method through a designated broker;
 
     - a pledge of shares to a broker; or
 
     - a promissory note.
 
     The purchase price for newly issued restricted shares awarded under the
1999 Omnibus Equity Incentive Plan may be paid with:
 
     - cash;
 
     - a promissory note; or
 
     - the rendering of past services.
 
     The committee may reprice options and may modify, extend or assume
outstanding options and stock appreciation rights. The committee may accept the
cancellation of outstanding options or stock appreciation rights in return for
the grant of new options or stock appreciation rights. The new option or right
may have the same or a different number of shares and the same or a different
exercise price.
 
     If a change in control of Marimba occurs, an option or other award under
the 1999 Omnibus Equity Incentive Plan will become fully exercisable and fully
vested if the option or award is not assumed by the surviving corporation or its
parent or if the surviving corporation or its parent does not substitute
comparable awards for the awards granted under the 1999 Omnibus Equity Incentive
Plan.
 
     A change in control includes:
 
     - a merger or consolidation of Marimba after which our then-current
       stockholders own less than 50% of the surviving corporation;
 
     - a sale of all or substantially all of our assets;
 
                                       56
<PAGE>   58
 
     - a proxy contest that results in replacement of more than one-half of our
       directors over a 24-month period; or
 
   
     - an acquisition of 50% or more of our outstanding stock by a person other
       than a person related to Marimba, including a corporation owned by our
       stockholders.
    
 
     If a merger or other reorganization occurs, the agreement of merger or
reorganization may provide that outstanding options and other awards under the
1999 Omnibus Equity Incentive Plan shall be assumed by the surviving corporation
or its parent, shall be continued by Marimba if it is the surviving corporation,
shall have accelerated vesting and then expire early, or shall be cancelled for
a cash payment.
 
     Our board of directors may amend or terminate the 1999 Omnibus Equity
Incentive Plan at any time. If our board amends the plan, stockholder approval
of the amendment will be sought only if required by an applicable law. The 1999
Omnibus Equity Incentive Plan will continue in effect indefinitely unless the
board decides to terminate the plan earlier.
 
     1999 EMPLOYEE STOCK PURCHASE PLAN
 
     Our board of directors adopted our employee stock purchase plan on February
2, 1999. We will also seek stockholder approval of this plan. We have reserved
500,000 shares of our common stock for issuance under our 1999 employee stock
purchase plan. As of January 1 each year, starting in 2000, the number of shares
reserved for issuance under our 1999 employee stock purchase plan will be
increased automatically by 2% of the total number of shares of common stock then
outstanding or, if less, 500,000 shares. Our 1999 employee stock purchase plan
is intended to qualify under Section 423 of the Internal Revenue Code.
 
     Eligible employees may begin participating in the 1999 employee stock
purchase plan at the start of an offering period. Each offering period lasts 24
months. Two overlapping offering periods will start on May 1 and November 1 of
each calendar year. However, the first offering period will start on the
effective date of this offering and end on April 30, 2001. Purchases of our
common stock will occur on April 30 and October 31 of each calendar year during
an offering period.
 
   
     Our 1999 employee stock purchase plan will be administered by the
compensation committee of our board of directors. Each of our employees is
eligible to participate if he is employed by us for more than 20 hours per week
and for more than five months per year.
    
 
     Our 1999 employee stock purchase plan permits each eligible employee to
purchase common stock through payroll deductions. Each employee's payroll
deductions may not exceed 10% of the employee's cash compensation. The initial
period during which payroll deductions may be contributed will begin on the
effective date of this offering and end on October 31, 1999. Each participant
may purchase up to 500 shares on any purchase date.
 
     The price of each share of common stock purchased under our 1999 employee
stock purchase plan will be 85% of the lower of:
 
     - the fair market value per share of our common stock on the date
       immediately before the first date of the applicable offering period; or
 
     - the fair market value per share of our common stock on the purchase date.
 
     In the case of the first offering period, the price per share under the
plan will be 85% of the lower of:
 
     - the price offered to the public in this offering; or
 
     - the fair market value per share of our common stock on the purchase date.
 
     Employees may end their participation in the 1999 employee stock purchase
plan at any time. Participation ends automatically upon termination of
employment with Marimba.
 
                                       57
<PAGE>   59
 
     If a change in control of Marimba occurs, our 1999 employee stock purchase
plan will end, and shares will be purchased with the payroll deductions
accumulated to date by participating employees, unless this plan is assumed by
the surviving corporation or its parent. Our board of directors may amend or
terminate the 1999 employee stock purchase plan at any time. If our board of
directors increases the number of shares of common stock reserved for issuance
under the 1999 employee stock purchase plan, it must seek the approval of our
stockholders.
 
     1999 NON-EMPLOYEE DIRECTORS OPTION PLAN
 
     Our board of directors adopted our 1999 Non-Employee Directors Option Plan
on February 2, 1999. We will also seek stockholder approval of this plan. Only
the non-employee members of our board of directors will be eligible for
automatic option grants under this plan.
 
     We have reserved 150,000 shares of our common stock for issuance under our
1999 Non-Employee Directors Option Plan. As of January 1 each year, starting in
2000, the number of shares reserved for issuance under our 1999 Non-Employee
Directors Option Plan will be increased automatically to restore the total
number of shares available under this plan to 150,000 shares. No shares have yet
been issued under our 1999 Non-Employee Directors Option Plan.
 
     The compensation committee of our board of directors will make any
administrative determinations under our 1999 Non-Employee Directors Option Plan.
No discretionary decisions will be made by the compensation committee under this
plan.
 
     The exercise price for options granted under our 1999 Non-Employee
Directors Option Plan may be paid in cash or in outstanding shares of our common
stock. Options may also be exercised on a cashless basis through the same-day
sale of the purchased shares.
 
     Each individual who became a member of our board of directors as a
non-employee director before 1999 will receive a fully vested option for 7,500
shares of our common stock on the effective date of this offering. The exercise
price of this option will be the initial price offered to the public in this
offering.
 
   
     Each individual who first joins our board of directors as a non-employee
director after the effective date of this offering will receive at that time a
fully vested option for 15,000 shares of our common stock. In addition, at each
of our annual stockholders meetings, beginning in 2000, each non-employee
director who will continue to be a director after that meeting will
automatically be granted at that meeting a fully vested option for 7,500 shares
of our common stock. However, any non-employee director who receives an option
for 15,000 shares under this plan will first become eligible to receive the
annual option for 7,500 shares at the annual meeting that occurs at any time
during the year that is two calendar years after the year in which he received
the option for 15,000 shares. For example, if a director received the option for
15,000 shares at any time in 1999, the director will first become eligible to
receive the option for 7,500 shares at the annual stockholders meeting occurring
in 2001. The exercise price of each option will be equal to the fair market
value of our common stock on the option grant date.
    
 
     Our board of directors may amend or modify the 1999 Non-Employee Directors
Option Plan at any time. The 1999 Non-Employee Directors Option Plan will
terminate on February 1, 2009, unless our board of directors decides to
terminate the plan sooner.
 
CHANGE OF CONTROL ARRANGEMENTS
 
   
     We granted to Mr. Gerson options to purchase an aggregate of 300,000 shares
of our common stock at an exercise price of $.50 per share. The first option for
250,000 shares vested as to one-third of the shares subject to the option on the
first anniversary of Mr. Gerson's employment start date and the remainder vests
in equal monthly installments for twenty-four months. The second option for
50,000 shares vests in equal monthly installments for thirty-six months
commencing November 3, 1998.
    
 
     If there is a merger or asset sale of Marimba after the first twelve months
of Mr. Gerson's employment and Mr. Gerson is constructively terminated within
twelve months of the merger or asset
 
                                       58
<PAGE>   60
 
   
sale, Mr. Gerson will vest in 50% of the remaining unvested shares subject to
both options. Following the acceleration of both options, the remaining unvested
shares subject to these options will vest in accordance with the original
vesting schedules, as if the remaining shares were the only shares subject to
the options.
    
 
     All options and other awards granted under our 1996 Stock Plan and our 1999
Omnibus Equity Incentive Plan, including options granted to our executive
officers, will become fully vested if a change in control of Marimba occurs,
unless the options or awards are assumed by the surviving corporation or its
parent or if the surviving corporation or its parent substitutes comparable
options or awards for options or awards granted under our plans.
 
                                       59
<PAGE>   61
 
                              CERTAIN TRANSACTIONS
 
   
     Since our incorporation in February 1996, we have issued and sold
securities to the following persons who are our executive officers, directors or
principal stockholders. The per share purchase price for our Series A preferred
stock was $1.4824 and the per share purchase price for our Series B preferred
stock was $5.0072. For more detail on shares held by these purchasers see
"Principal and Selling Stockholders."
    
 
   
<TABLE>
<CAPTION>
                                                             SERIES A    SERIES B
                                                             PREFERRED   PREFERRED    COMMON
                        INVESTOR(1)                            STOCK       STOCK       STOCK
                        -----------                          ---------   ---------   ---------
<S>                                                          <C>         <C>         <C>
Kim K. Polese(1)...........................................         --         --    2,500,000
Arthur A. van Hoff(1)......................................         --         --    2,500,000
Steven P. Williams.........................................     67,458         --      316,000
Thomas E. Banahan..........................................         --         --      316,000
Robert E. Currie...........................................         --         --      300,000
Fred M. Gerson.............................................         --         --      300,000
Jonathan Payne(1)..........................................         --         --    2,500,000
Sami Shaio(1)..............................................         --         --    2,500,000
Raymond J. Lane............................................         --     19,971           --
Kleiner Perkins Caufield & Byers(2)........................  2,698,412    199,712           --
</TABLE>
    
 
- -------------------------
   
(1) Each of Kim K. Polese, Arthur A. van Hoff, Jonathan Payne and Sami Shaio,
    our founders, entered into a Restricted Common Stock Purchase Agreement,
    dated February 21, 1996, with us. The per share purchase price for these
    shares of common stock was $.001.
    
 
   
(2) Kleiner Perkins Caufield & Byers includes the following entities managed by
    Kleiner Perkins: KPCB Java Fund, L.P., KPCB Information Sciences Zaibatsu
    Fund II, L.P., Kleiner Perkins Caufield & Byers VIII, L.P and KPCB VIII
    Founders Fund, L.P. Douglas J. Mackenzie, a director of Marimba, is a
    general partner of Kleiner Perkins.
    
 
   
     In addition, we have granted options to some of our executive officers. See
"Management -- Executive Compensation."
    
 
SERIES A FINANCING
 
     On August 8, 1996, we issued an aggregate of 2,698,412 shares of Series A
preferred stock at a per share purchase price of $1.4824 to three investors,
each of which is an entity affiliated with Kleiner Perkins, one of our principal
stockholders. Douglas J. Mackenzie, a member of our board of directors, is a
general partner of Kleiner Perkins. On January 28, 1997, we issued 67,458 shares
of Series A preferred stock at a per share purchase price of $1.4824 to Steven
P. Williams, our Executive Vice President, Worldwide Sales and Chief Operating
Officer.
 
SERIES B FINANCING
 
     On August 25 and 28, 1997, we issued an aggregate of 2,895,829 shares of
Series B preferred stock at a per share purchase price of $5.0072 to ten
investors, including entities affiliated with Kleiner Perkins. On September 23,
October 23 and November 21, 1997, we issued an aggregate of 71,896 shares of
Series B preferred stock at a per share purchase price of $5.0072 to four
investors. On October 7, 1997, we issued 19,971 shares of Series B preferred
stock at a per share purchase price of $5.0072 to Raymond J. Lane, a member of
our board of directors.
 
                                       60
<PAGE>   62
 
   
LOANS FROM DIRECTORS AND EXECUTIVE OFFICERS
    
 
   
     Each of our founders, Kim K. Polese, Arthur A. van Hoff, Jonathan Payne,
and Sami Shaio, provided a short-term loan to us in return for a promissory
note, dated March 7, 1996, issued to each founder. Each note was in the
principal sum of $12,500 and accrued simple interest at the rate of 5.32% per
year. In addition, Mr. Shaio loaned an additional $14,000 to us in return for a
promissory note, dated July 17, 1996, which accrued simple interest at the rate
of 5.32% per year. We repaid each of these loans in August 1996.
    
 
LOAN TO EXECUTIVE OFFICER
 
   
     On November 11, 1997, we loaned $149,970 to Fred M. Gerson, secured by a
stock pledge agreement, in connection with his purchase of 300,000 shares of our
common stock. This note accrued interest at the rate of 5.69% per year. The
principal balance of this note and accrued interest was paid in full in January
1999. See "Executive Compensation -- Change of Control Arrangements."
    
 
   
STOCK OPTION GRANTS TO DIRECTORS
    
 
   
     On September 18, 1997, we granted to Raymond J. Lane an option to purchase
75,000 shares of common stock at a per share exercise price of $.50 under our
1996 Stock Plan. Mr. Lane's option is subject to three-year vesting, in which he
becomes vested in 33 1/3% of the option shares upon completion of 12 months of
service and in the balance of the option shares in a series of equal monthly
installments upon the completion of each of the next 24 months of service. On
February 2, 1999, we granted to each of Aneel Bhusri and Stratton D. Sclavos an
option to purchase 20,000 shares of common stock at a per share exercise price
of $10.00 under our 1996 Stock Plan. Messrs. Bhusri's and Sclavos' options were
fully vested upon grant.
    
 
INDEMNIFICATION
 
     We have entered into an indemnification agreement with each of our officers
and directors. See "Management -- Indemnification" for a description of the
indemnification available to our officers and directors under our Third Amended
and Restated Certificate of Incorporation, to be effective after the closing of
this offering and our bylaws.
                            ------------------------
 
     We believe that the transactions above were made on terms no less favorable
to us than could have been obtained from unaffiliated third parties. All future
transactions, including loans between us and our officers, directors, principal
stockholders and their affiliates will be approved by a majority of the board of
directors, including a majority of the independent and disinterested outside
directors on the board of directors, and will continue to be on terms no less
favorable to us than could be obtained from unaffiliated third parties.
 
                                       61
<PAGE>   63
 
                       PRINCIPAL AND SELLING STOCKHOLDERS
 
   
     The following table presents selected information regarding beneficial
ownership of our outstanding common stock as of March 31, 1999 and as adjusted
to reflect the sale of the common stock being sold in this offering for: (1)
each of our directors, our chief executive officer and our four other
highest-paid executive officers; (2) all of our directors and executive officers
as a group; and (3) each other person known by us to own beneficially more than
5% of our common stock.
    
 
   
     Beneficial ownership is determined in accordance with the rules of the
Securities and Exchange Commission and generally includes voting or investment
power with respect to securities. Common stock subject to options exercisable
within 60 days of March 31, 1999 are deemed outstanding for purposes of
computing the percentage ownership of the person holding the option but are not
deemed outstanding for purposes of computing the percentage ownership of any
other person. Except where indicated, and subject to community property laws
where applicable, we believe that the persons in the table below have sole
voting and investment power with respect to all common stock shown as
beneficially owned by them. Unless otherwise indicated, the address of each
holder of more than 5% of our common stock listed in the table is c/o Marimba,
Inc., 440 Clyde Ave., Mountain View, CA 94043.
    
   
    
 
   
<TABLE>
<CAPTION>
                                              SHARES BENEFICIALLY             SHARES BENEFICIALLY
                                                     OWNED                           OWNED
                                              BEFORE THE OFFERING   SHARES    AFTER THE OFFERING
            NAME AND ADDRESS OF               -------------------    BEING    -------------------
              BENEFICIAL OWNER                 NUMBER     PERCENT   OFFERED    NUMBER     PERCENT
            -------------------               ---------   -------   -------   ---------   -------
<S>                                           <C>         <C>       <C>       <C>         <C>
Kim K. Polese...............................  2,486,072    12.9%    124,300   2,361,772    10.4%
Steven P. Williams(1)(2)....................    483,458     2.5          --     483,458     2.1
Thomas E. Banahan...........................    316,000     1.6          --     316,000     1.4
Robert E. Currie(1).........................    370,000     1.9          --     370,000     1.6
Fred M. Gerson(3)...........................    300,000     1.6          --     300,000     1.3
Arthur A. van Hoff..........................  2,480,000    12.9     124,000   2,356,000    10.4
Aneel Bhusri(1).............................     20,000     0.1          --      20,000     .09
Raymond J. Lane(1)..........................     94,971     0.5          --      94,971     .42
Douglas J. Mackenzie(4).....................  2,898,124    15.1          --   2,898,124    12.7
  c/o Kleiner Perkins Caufield & Byers 2750
  Sand Hill Road Menlo Park, CA 94025
Stratton D. Sclavos(1)......................     20,000     0.1          --      20,000     .09
OTHER 5% STOCKHOLDERS
Jonathan Payne(5)...........................  2,476,000    12.9     123,700   2,352,300    10.3
Sami Shaio..................................  2,439,200    12.7      80,000   2,359,200    10.4
Entities affiliated with Kleiner Perkins
  Caufield & Byers..........................  2,898,124    15.1          --   2,898,124    12.7
  2750 Sand Hill Road Menlo Park, CA 94025
All directors and executive officers as a
  group (11 persons)(6).....................  9,768,625    49.4     248,300   9,520,325    40.8
</TABLE>
    
 
                                       62
<PAGE>   64
 
   
- -------------------------
    
 
   
(1) The following table indicates those people whose total number of
    beneficially owned shares include shares subject to options exercisable
    within 60 days of March 31, 1999:
    
 
<TABLE>
<CAPTION>
                                                                  Shares Subject to Options
                                                                  -------------------------
    <S>                                                           <C>
    Robert E. Currie............................................            70,000
    Steven P. Williams..........................................           100,000
    Aneel Bhusri................................................            20,000
    Raymond J. Lane.............................................            75,000
    Stratton D. Sclavos.........................................            20,000
</TABLE>
 
   
(2) Includes 1,500 shares held as custodian for Zachary P. Williams and 1,500
    shares held as custodian for Natalia J. Williams.
    
 
   
(3) Includes 5,000 shares held as custodian for Stacey B. Gerson and 5,000
    shares held as custodian for Hilary I. Gerson. Mr. Gerson disclaims
    beneficial ownership of these shares.
    
 
   
(4) Represents 1,988,745, 72,453, 76,131 and 760,795 shares of common stock held
    of record by KPCB Java Fund, L.P., KPCB Information Sciences Zaibatsu Fund
    II, L.P., KPCB VIII Founders Fund, L.P., and Kleiner Perkins Caufield &
    Byers VIII, L.P. Mr. Mackenzie, a director of Marimba, is a general partner
    of Kleiner Perkins. Mr. Mackenzie disclaims beneficial ownership of shares
    held by Kleiner Perkins except to the extent of his pecuniary interest
    arising from his interest in Kleiner Perkins.
    
 
   
(5) Includes 1,538 shares held as custodian for Madeline M. Payne.
    
 
   
(6) Includes 585,000 shares subject to options which are exercisable within 60
    days of March 31, 1999, 5,000 shares held by Mr. Gerson as custodian for
    Stacey B. Gerson and 5,000 shares held as custodian for Hilary I. Gerson,
    and 1,500 shares held by Mr. Williams as custodian for Zachary P. Williams
    and 1,500 shares held as custodian for Natalia J. Williams.
    
 
   
     If the underwriters' over-allotment option is exercised, up to an
additional 412,000 shares may be sold by selling stockholders as follows: Kim K.
Polese 124,300; Arthur A. van Hoff 124,000; Jonathan Payne 123,700; and Sami
Shaio 40,000.
    
 
   
     On April 19, 1999, our board of directors granted to the following
executive officers options to purchase shares of our common stock at an exercise
price per share of $15.00: Mr. Williams received an option to purchase 300,000
shares; Mr. Currie received an option to purchase 100,000 shares and Mr. Gerson
received an option to purchase 50,000 shares.
    
 
                                       63
<PAGE>   65
 
                          DESCRIPTION OF CAPITAL STOCK
 
   
     Our authorized capital stock consists of 80,000,000 shares of common stock,
and 10,000,000 shares of undesignated preferred stock, after giving effect to
the amendment of our Second Amended and Restated Certificate of Incorporation to
delete references to Series A preferred stock and Series B preferred stock
following conversion of our preferred stock into common stock upon the closing
of this offering.
    
 
     The following is a summary description of our capital stock. Our bylaws and
our Third Amended and Restated Certificate of Incorporation, to be effective
after the closing of this offering, provide further information about our
capital stock.
 
COMMON STOCK
 
   
     As of March 31, 1999, there were 13,444,209 shares of common stock
outstanding that were held of record by approximately 187 stockholders. There
will be 22,745,775 shares of common stock outstanding, assuming no exercise of
the underwriters' over-allotment option and assuming no exercise after March 31,
1999 of outstanding options, after giving effect to the sale of the shares of
common stock to the public offered in this prospectus and the conversion of our
preferred stock into common stock at a one-to-one ratio.
    
 
   
     The holders of common stock are entitled to one vote per share on all
matters to be voted upon by the stockholders. Holders of common stock do not
have cumulative voting rights, and, therefore, holders of the remaining shares
voting for the election of directors can elect all of the directors. Subject to
preferences that may be applicable to any outstanding preferred stock, the
holders of common stock are entitled to receive dividends, if any, as may be
declared from time to time by the board of directors out of funds legally
available. See "Dividend Policy." In the event of the liquidation, dissolution
or winding up of Marimba, the holders of common stock are entitled to share
ratably in all assets remaining after payment of liabilities, subject to prior
distribution rights of preferred stock, if any, then outstanding. The common
stock has no preemptive or conversion rights or other subscription rights. There
are no redemption or sinking fund provisions applicable to the common stock. All
outstanding shares of common stock are fully paid and nonassessable, and the
shares of common stock to be issued upon completion of this offering will be
fully paid and nonassessable.
    
 
PREFERRED STOCK
 
   
     Upon filing our Third Amended and Restated Certificate of Incorporation
after the closing of this offering, we will authorize 10,000,000 shares of
preferred stock. The board of directors has the authority to issue the preferred
stock in one or more series and to fix the rights, preferences, privileges and
related restrictions, including dividend rights, dividend rates, conversion
rights, voting rights, terms of redemption, redemption prices, liquidation
preferences and the number of shares constituting any series or the designation
of the series, without further vote or action by the stockholders. The issuance
of preferred stock may have the effect of delaying, deferring or preventing a
change in control of us without further action by the stockholders and may
adversely affect the voting and other rights of the holders of common stock. The
issuance of preferred stock with voting and conversion rights may adversely
affect the voting power of the holders of common stock, including the loss of
voting control to others. At present, we have no plans to issue any of our
preferred stock.
    
 
WARRANTS
 
     Immediately following the closing of this offering, there will be an
outstanding warrant to purchase a total of 16,865 shares of common stock at
$1.48 per share. This warrant expires on January 31, 2004.
 
                                       64
<PAGE>   66
 
ANTI-TAKEOVER EFFECTS OF PROVISIONS OF THE CERTIFICATE OF INCORPORATION, BYLAWS
AND DELAWARE LAW
 
     CERTIFICATE OF INCORPORATION AND BYLAWS
 
   
     Upon filing after the closing of this offering, our Third Amended and
Restated Certificate of Incorporation will provide that, all stockholder actions
must be effected at a duly called meeting and not by a consent in writing. The
bylaws provide that, except as otherwise required by law or by our Third Amended
and Restated Certificate of Incorporation, special meetings of the stockholders
can only be called by a resolution adopted by a majority of the board of
directors, or by the president or at the request of stockholders holding at
least 30% of our capital stock. These provisions of our Third Amended and
Restated Certificate of Incorporation and bylaws could discourage potential
acquisition proposals and could delay or prevent a change in control. These
provisions are intended to enhance the likelihood of continuity and stability in
the composition of the board of directors and in the policies formulated by the
board of directors and to discourage transactions that may involve an actual or
threatened change of control. These provisions are designed to reduce our
vulnerability to an unsolicited acquisition proposal. The provisions also are
intended to discourage tactics that may be used in proxy fights. However, these
provisions could have the effect of discouraging others from making tender
offers for our shares and, as a consequence, they also may inhibit fluctuations
in the market price of our shares that could result from actual or rumored
takeover attempts. These provisions also may have the effect of preventing
changes in our management.
    
 
     DELAWARE TAKEOVER STATUTE
 
   
     We are subject to Section 203 of the Delaware General Corporation Law,
which, subject to limited exceptions, prohibits a Delaware corporation from
engaging in any business combination with any interested stockholder for a
period of three years following the date that the stockholder became an
interested stockholder, unless:
    
 
   
     - before this date, the board of directors of the corporation approved
       either the business combination or the transaction that resulted in the
       stockholder becoming an interested stockholder;
    
 
     - upon consummation of the transaction that resulted in the stockholder
       becoming an interested stockholder, the interested stockholder owned at
       least 85% of the voting stock of the corporation outstanding at the time
       the transaction commenced, excluding for purposes of determining the
       number of shares outstanding those shares owned by persons who are
       directors and officers and by employee stock plans in which employee
       participants do not have the right to determine confidentially whether
       shares held subject to the plan will be tendered in a tender or exchange
       offer; or
 
   
     - on or after this date, the business combination is approved by the board
       of directors and authorized at an annual or special meeting of
       stockholders, and not by written consent, by the affirmative vote of at
       least 66 2/3% of the outstanding voting stock that is not owned by the
       interested stockholder.
    
 
     Section 203 defines business combination to include:
 
     - any merger or consolidation involving the corporation and the interested
       stockholder;
 
     - any sale, transfer, pledge or other disposition of 10% or more of the
       assets of the corporation involving the interested stockholder;
 
   
     - subject to limited exceptions, any transaction that results in the
       issuance or transfer by the corporation of any stock of the corporation
       to the interested stockholder;
    
 
                                       65
<PAGE>   67
 
     - any transaction involving the corporation that has the effect of
       increasing the proportionate share of the stock of any class or series of
       the corporation beneficially owned by the interested stockholder; or
 
     - the receipt by the interested stockholder of the benefit of any loans,
       advances, guarantees, pledges or other financial benefits provided by or
       through the corporation.
 
   
     In general, Section 203 defines an interested stockholder as any entity or
person beneficially owning 15% or more of the outstanding voting stock of the
corporation and any entity or person affiliated with or controlling or
controlled by this entity or person.
    
 
REGISTRATION RIGHTS
 
   
     After this offering, the holders of 15,181,300 shares of common stock will
be entitled to rights with respect to the registration of these shares under the
Securities Act. Under the terms of the agreement between us and the holders of
these registrable securities, if we propose to register any of our securities
under the Securities Act, either for our own account or for the account of other
security holders exercising registration rights, these holders are entitled to
notice of registration and are entitled to include their shares of common stock
in the registration. Holders of 5,753,566 shares of the registrable securities
are also entitled to specified demand registration rights under which they may
require us to file a registration statement under the Securities Act at our
expense with respect to our shares of common stock, and we are required to use
our best efforts to effect this registration. Further, the holders of these
demand rights may require us to file additional registration statements on Form
S-3. All of these registration rights are subject to conditions and limitations,
among them the right of the underwriters of an offering to limit the number of
shares included in the registration and our right not to effect a requested
registration within six months following the initial offering of our securities,
including this offering.
    
 
TRANSFER AGENT AND REGISTRAR
 
   
     The transfer agent and registrar for our common stock is U.S. Stock
Transfer Corporation.
    
 
                                       66
<PAGE>   68
 
                        SHARES ELIGIBLE FOR FUTURE SALE
 
     Upon completion of this offering, we will have 22,745,775 shares of common
stock outstanding, assuming no exercise of options after March 31, 1999. Of
these shares, the 4,000,000 shares sold in this offering will be freely tradable
without restriction or further registration under the Securities Act, except
that any shares held by persons that directly or indirectly control, or are
controlled by, or are under common control with us, may generally only be sold
in compliance with the limitations of Rule 144 described below.
 
SALES OF RESTRICTED SHARES
 
   
     The remaining 18,745,775 shares of common stock are deemed restricted
shares under Rule 144. The number of shares of common stock available for sale
in the public market is limited by restrictions under the Securities Act and
lock-up agreements under which the holders of the shares have agreed not to sell
or otherwise dispose of any of their shares for a period of 180 days after the
date of this prospectus without the prior written consent of Morgan Stanley &
Co. Incorporated. On the date of this prospectus, no shares other than the
4,000,000 shares being sold in this offering will be eligible for sale.
Beginning 180 days after the date of this prospectus, or earlier with the
consent of Morgan Stanley & Co. Incorporated, 18,745,775 restricted shares will
become available for sale in the public market subject to the limitations of
Rule 144 of the Securities Act.
    
 
   
     In general, under Rule 144 of the Securities Act as currently in effect,
beginning 90 days after this offering, a person, or persons whose shares are
aggregated, who has beneficially owned restricted shares for at least one year,
including a person who may be deemed an affiliate, is entitled to sell within
any three-month period a number of shares of common stock that does not exceed
the greater of 1% of the then-outstanding shares of our common stock,
approximately 227,458 shares after giving effect to this offering, and the
average weekly trading volume of our common stock on the Nasdaq National Market
during the four calendar weeks preceding this sale. Sales under Rule 144 of the
Securities Act are subject to restrictions relating to manner of sale, notice
and the availability of current public information about us. A person who is not
our affiliate at any time during the 90 days preceding a sale, and who has
beneficially owned shares for at least two years, would be entitled to sell
these shares immediately following this offering without regard to the volume
limitations, manner of sale provisions or notice or other requirements of Rule
144 of the Securities Act. However, the transfer agent may require an opinion of
counsel that a proposed sale of shares comes within the terms of Rule 144 of the
Securities Act before effecting a transfer of these shares.
    
 
   
     Before this offering, there has been no public market for our common stock
and no predictions can be made of the effect, if any, that the sale or
availability for sale of shares of additional common stock will have on the
market price of our common stock. Nevertheless, sales of substantial amounts of
these shares in the public market, or the perception that these sales could
occur, could adversely affect the market price of the common stock and could
impair our future ability to raise capital through an offering of our equity
securities.
    
 
OPTIONS
 
   
     As of March 31, 1999, options to purchase a total of 1,943,065 shares of
common stock under the 1996 Stock Plan were outstanding and exercisable. All of
the shares subject to options are subject to lock-up agreements. See "Lock-up
Agreements." An additional 1,087,329 shares of common stock were available as of
March 31, 1999 for future option grants or direct issuances under the 1996 Stock
Plan. However, as of the date of this offering, our 1996 Stock Plan terminates
and no future options will be granted under this plan. In addition, in February,
1999, 1,250,000 shares were reserved for issuance under our 1999 Omnibus Equity
Incentive Plan, 500,000 shares were reserved for issuance under our 1999
employee stock purchase plan and 150,000 shares were reserved for issuance under
our 1999 Non-
    
 
                                       67
<PAGE>   69
 
Employee Directors Option Plan. See "Management -- Employee Benefit
Plans -- 1999 Omnibus Equity Incentive Plan," "-- 1999 employee stock purchase
plan," and "-- 1999 Non-Employee Directors Option Plan" and Notes 6 and 9 of
Notes to Consolidated Financial Statements.
 
   
     Rule 701 under the Securities Act provides that shares of common stock
acquired on the exercise of outstanding options may be resold by persons other
than our affiliates, beginning 90 days after the date of this prospectus,
subject only to the manner of sale provisions of Rule 144, and by affiliates,
beginning 90 days after the date of this prospectus, subject to all provisions
of Rule 144 except its one-year minimum holding period. We intend to file one or
more registration statements on Form S-8 under the Securities Act to register
all shares of common stock subject to outstanding stock options and common stock
issued or issuable under our 1996 Stock Plan. We expect to file the registration
statement covering shares offered under the 1996 Stock Plan and the 1999
employee stock purchase plan and 1999 Omnibus Equity Incentive Plan
approximately 30 days after the closing of this offering. These registration
statements are expected to become effective upon filing. Shares covered by these
registration statements will then be eligible for sale in the public markets,
subject to the lock-up agreements, if applicable.
    
 
                                       68
<PAGE>   70
 
                                  UNDERWRITERS
 
   
     Under the terms and subject to conditions contained in an underwriting
agreement, the underwriters named below, for whom Morgan Stanley & Co.
Incorporated, Credit Suisse First Boston Corporation, BT Alex. Brown
Incorporated and Hambrecht & Quist LLC are acting as representatives, have
severally agreed to purchase, and Marimba and the selling stockholders have
agreed to sell to the underwriters, severally, the respective number of shares
of our common stock indicated opposite the names of the underwriters below:
    
 
<TABLE>
<CAPTION>
                                                               NUMBER
                            NAME                              OF SHARES
                            ----                              ---------
<S>                                                           <C>
Morgan Stanley & Co. Incorporated...........................
Credit Suisse First Boston Corporation......................
BT Alex. Brown Incorporated.................................
Hambrecht & Quist LLC.......................................
                                                              ---------
          Total.............................................  4,000,000
                                                              =========
</TABLE>
 
   
     The underwriters and the representatives are collectively referred to as
the underwriters and the representatives. The underwriters are offering the
shares of common stock subject to their acceptance of the shares from Marimba
and the selling stockholders and subject to prior sale. The underwriting
agreement provides that the obligations of the several underwriters to pay for
and accept delivery of the shares of our common stock offered by us in this
offering are subject to the approval of legal matters by their counsel. The
underwriters are obligated to take and pay for all of the shares of common stock
offered by us in this offering, other than those covered by the over-allotment
option described below, if any of those shares are taken.
    
 
   
     The underwriters initially propose to offer part of the shares of common
stock directly to the public at the public offering price on the cover page of
the prospectus and part to selected dealers at a price that represents a
concession not in excess of $     per share under the public offering price. Any
underwriter may allow, and these dealers may reallow, a concession not in excess
of $     per share to other underwriters or to some dealers. After the initial
offering of the shares of common stock, the offering price and other selling
terms may from time to time be varied by the representatives.
    
 
   
     Marimba and the selling stockholders have granted to the underwriters an
option, exercisable for 30 days from the date of this prospectus, to purchase up
to an aggregate of 600,000 additional shares of common stock at the public
offering price on the cover page of the prospectus, less underwriting discounts
and commissions. The underwriters may exercise this option solely for the
purpose of covering over-allotments, if any, made in connection with the
offering of the shares of common stock being offered. To the extent the option
is exercised, each underwriter will become obligated, subject to limited
conditions, to purchase approximately the same percentage of these additional
shares of common stock as the number next to the underwriter's name in the
preceding table bears to the total number of shares of common stock next to the
names of all underwriters in the preceding table. If the underwriters' option is
exercised in full, the total price to the public for this offering would be
$          , the total underwriters' discounts and commissions would be
$          , the total proceeds to Marimba would be $          and the total
proceeds to the selling stockholders would be $          .
    
 
   
     The underwriters have informed Marimba that each principal underwriter in
this offering may, subject to the approval of Morgan Stanley & Co. Incorporated,
sell to discretionary accounts over which the principal underwriter exercises
discretionary authority. The underwriters have further informed
    
 
                                       69
<PAGE>   71
 
   
Marimba that they estimate that these sales will not exceed in the aggregate
five percent of the total number of shares of common stock offered by them.
    
 
     Marimba has applied to list the common stock on the Nasdaq National Market
under the symbol "MRBA."
 
   
     At the request of Marimba, the underwriters will reserve up to 260,000
shares of common stock to be offered for sale, at the initial public offering
price, to directors, officers, employees, business associates and related
persons of Marimba. The number of shares of common stock available for sale to
the general public will be reduced to the extent these persons purchase the
reserved shares. Any reserved shares which are not so purchased will be offered
by the underwriters to the general public on the same basis as the other shares
being offered.
    
 
   
     Marimba, our selling stockholders, directors, executive officers, and
substantially all of our other stockholders and optionholders have each agreed
that, without the prior written consent of Morgan Stanley & Co. Incorporated on
behalf of the underwriters, he will not, during the period ending 180 days after
the date of this prospectus:
    
 
   
     - 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, lend or 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
    
 
     - enter into any swap or similar arrangement that transfers to another, in
       whole or in part, any of the economic consequences of ownership of the
       common stock;
 
   
whether any transaction described above is to be settled by delivery of common
stock or other securities, in cash or by alternative payment.
    
 
     The restrictions described in the previous paragraph do not apply to:
 
     - the sale of shares to the underwriters;
 
     - the issuance by Marimba of shares of common stock upon the exercise of an
       option or a warrant or the conversion of a security outstanding on the
       date of this prospectus of which the underwriters have been advised in
       writing;
 
     - transactions by any person other than Marimba relating to shares of
       common stock or other securities acquired in open market transactions
       after the completion of the offering of the shares;
 
   
     - the granting of stock options under the existing Marimba employee benefit
       plans, provided that these options do not become exercisable and do not
       vest during this 180-day period; or
    
 
   
     - gifts, distributions or transfers to trusts, provided that transferees in
       transactions described in this clause enter into lock-up agreements
       similar to those described in the previous paragraph.
    
 
   
     In order to facilitate the offering of the common stock, the underwriters
may engage in transactions that stabilize, maintain or otherwise affect the
price of the common stock. Specifically, the underwriters may agree to sell or
allot more shares than the 4,000,000 shares of common stock Marimba and the
selling stockholders have agreed to sell them. This over-allotment would create
a short position in the common stock for the underwriters' account. To cover any
over-allotments or to stabilize the price of the common stock, the underwriters
may bid for, and purchase, shares of common stock in the open market. Finally,
the underwriting syndicate may reclaim selling concessions allowed to an
underwriter or a dealer for distributing the common stock in the offering, if
the syndicate repurchases previously distributed common stock in transactions to
cover syndicate short positions, in stabilization transactions or in other
transactions. Any of these activities may stabilize or maintain the market price
of the common stock
    
 
                                       70
<PAGE>   72
 
above independent market levels. The underwriters are not required to engage in
these activities, and may end any of these activities at any time.
 
   
     Marimba, the selling stockholders and the underwriters have agreed to
indemnify each other against some liabilities, including liabilities under the
Securities Act.
    
 
     In October 1997, Marimba sold 2,987,696 shares of Series B preferred stock.
An affiliate of Hambrecht & Quist LLC, one of the underwriters in this offering,
purchased 39,943 shares of Series B preferred stock, which are convertible into
39,943 shares of common stock, on the same terms as the other purchasers of
Series B preferred stock.
 
PRICING OF THE OFFERING
 
   
     Before this offering, there has been no public market for the shares of
common stock. The initial public offering price will be determined by
negotiations between Marimba and the representatives. Among the factors to be
considered in determining the initial public offering price will be:
    
 
     - the future prospects of Marimba and its industry in general;
 
   
     - sales, earnings and selected other financial operating information of
       Marimba in recent periods; and
    
 
     - the price-earnings ratios, price-sales ratios, market prices of
       securities and financial and operating information of companies engaged
       in activities similar to those of Marimba.
 
   
     The estimated public offering price range presented on the cover page of
this prospectus is subject to change as a result of market conditions and
changes in the factors listed above.
    
 
                                 LEGAL MATTERS
 
   
     The validity of the common stock being offered will be passed upon for
Marimba by Gunderson Dettmer Stough Villeneuve Franklin & Hachigian, LLP, Menlo
Park, California and for the underwriters by Fenwick & West LLP, Palo Alto,
California. As of the date of this prospectus, members and employees of
Gunderson Dettmer Stough Villeneuve Franklin & Hachigian, LLP, beneficially
owned an aggregate of 23,610 shares of our common stock.
    
 
                                    EXPERTS
 
   
     Ernst & Young LLP, independent auditors, have audited our consolidated
financial statements at December 31, 1997 and 1998, for the period from February
21, 1996 (inception) to December 31, 1996, and for each of the years in the
two-year period ended December 31, 1998 as set forth in their report. We have
included our financial statements in the prospectus and elsewhere in the
registration statement in reliance on Ernst & Young LLP's report, given upon the
authority of such firm as experts in accounting and auditing.
    
 
                                       71
<PAGE>   73
 
   
                      WHERE YOU CAN FIND MORE INFORMATION
    
 
   
     We have filed with the Securities and Exchange Commission a registration
statement on Form S-1 under the Securities Act with respect to the common stock
being offered. This prospectus does not contain all of the information presented
in the registration statement and the exhibits to the registration statement.
For further information with respect to Marimba and our common stock we are
offering, reference is made to the registration statement and the exhibits filed
as a part of the registration statement. Statements contained in this prospectus
concerning the contents of any contract or any other document referred to may be
only summaries of these documents. The exhibits to this registration statement
should be referenced for the complete contents of these contracts and documents.
Each statement is qualified in all respects by reference to the exhibit. The
registration statement, including the exhibits, may be inspected without charge
at the public reference facilities maintained by the Commission in Room 1024,
450 Fifth Street, N.W., Washington, D.C. 20549, and copies of all or any part
may be obtained from this office after payment of fees prescribed by the
Commission. The Commission maintains a World Wide Web site that contains
reports, proxy and information statements and other information regarding
registrants, including us, that file electronically with the Commission. The
address of the site is http://www.sec.gov.
    
 
                                       72
<PAGE>   74
 
                                 MARIMBA, INC.
 
                   INDEX TO CONSOLIDATED FINANCIAL STATEMENTS
 
<TABLE>
<S>                                                           <C>
Report of Ernst & Young LLP, Independent Auditors...........  F-2
Consolidated Financial Statements
  Consolidated Balance Sheets...............................  F-3
  Consolidated Statements of Operations and Comprehensive
     Loss...................................................  F-4
  Consolidated Statements of Redeemable Convertible
     Preferred Stock and Stockholders' Equity (Net Capital
     Deficiency)............................................  F-5
  Consolidated Statements of Cash Flows.....................  F-6
Notes to Consolidated Financial Statements..................  F-7
</TABLE>
 
                                       F-1
<PAGE>   75
 
               REPORT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS
 
The Board of Directors and Stockholders
Marimba, Inc.
 
     We have audited the accompanying consolidated balance sheets of Marimba,
Inc. as of December 31, 1997 and 1998, and the related consolidated statements
of operations and comprehensive loss, redeemable convertible preferred stock and
stockholders' equity (net capital deficiency), and cash flows for the period
from inception (February 21, 1996) to December 31, 1996 and for the years ended
December 31, 1997 and 1998. These financial statements are the responsibility of
the Company's management. Our responsibility is to express an opinion on these
financial statements based on our audits.
 
     We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.
 
     In our opinion, the financial statements referred to above present fairly,
in all material respects, the consolidated financial position of Marimba, Inc.
at December 31, 1997 and 1998, and the consolidated results of its operations
and its cash flows for the period from inception (February 21, 1996) to December
31, 1996 and for the years ended December 31, 1997 and 1998, in conformity with
generally accepted accounting principles.
 
                                          /s/ ERNST & YOUNG LLP
Palo Alto, California
January 13, 1999
 
                                       F-2
<PAGE>   76
 
                                 MARIMBA, INC.
 
                          CONSOLIDATED BALANCE SHEETS
                     (IN THOUSANDS, EXCEPT PAR VALUE DATA)
 
   
<TABLE>
<CAPTION>
                                                                                       PRO FORMA
                                                                                     STOCKHOLDERS'
                                                                 DECEMBER 31,          EQUITY AT
                                                              -------------------    DECEMBER 31,
                                                               1997        1998          1998
                                                              -------    --------    -------------
                                                                                      (UNAUDITED)
<S>                                                           <C>        <C>         <C>
ASSETS
Current assets:
     Cash and cash equivalents..............................  $14,402    $  3,700
     Short-term investments.................................       --       4,125
     Accounts receivable, net of allowances of $49 and $70
       at December 31, 1997 and 1998........................    4,591       2,585
     Unbilled receivables...................................       --       1,036
     Prepaid expenses and other current assets..............      248         371
                                                              -------    --------
          Total current assets..............................   19,241      11,817
Property and equipment, net.................................    2,401       2,747
Other assets................................................      256         298
                                                              -------    --------
                                                              $21,898    $ 14,862
                                                              =======    ========
LIABILITIES AND STOCKHOLDERS' EQUITY (NET CAPITAL DEFICIENCY)
Current liabilities:
     Accounts payable and accrued liabilities...............  $ 1,940    $  1,396
     Accrued compensation...................................    1,535       1,704
     Current portion of capital lease obligations and
       equipment advances...................................      133         286
     Deferred revenue.......................................    7,597       5,519
                                                              -------    --------
          Total current liabilities.........................   11,205       8,905
Long-term portion of capital lease obligations and equipment
  advances, and other long-term liabilities.................      211         747
Commitments and contingencies
Redeemable convertible preferred stock, 15,000 shares
  authorized at December 31, 1997 and 1998, $.0001 par
  value, issuable in series:
     Series A redeemable convertible preferred stock, 2,800
       shares designated; 2,766 shares issued and
       outstanding at December 31, 1997 and 1998 and none
       pro forma (liquidation preference at December 31,
       1998 of $4,100)......................................    4,055       4,055      $     --
     Series B redeemable convertible preferred stock, 3,050
       shares designated; 2,987 shares issued and
       outstanding at December 31, 1997 and 1998 and none
       pro forma (liquidation preference at December 31,
       1998 of $14,960).....................................   14,898      14,898            --
Stockholders' equity (net capital deficiency):
     Common stock, 30,000 shares authorized, $.0001 par
       value; 13,067 and 13,053 shares issued and
       outstanding at December 31, 1997 and 1998, and 18,806
       shares issued and outstanding pro forma..............        2           2             2
     Additional paid-in capital.............................      640       2,181        21,134
     Note receivable from officer...........................     (150)       (160)         (160)
     Deferred compensation..................................       --      (1,116)       (1,116)
     Cumulative translation adjustment......................       --          (6)           (6)
     Accumulated deficit....................................   (8,963)    (14,644)      (14,644)
                                                              -------    --------      --------
          Stockholders' equity (net capital deficiency).....   (8,471)    (13,743)     $  5,210
                                                              -------    --------      ========
                                                              $21,898    $ 14,862
                                                              =======    ========
</TABLE>
    
 
                            See accompanying notes.
                                       F-3
<PAGE>   77
 
                                 MARIMBA, INC.
 
          CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
 
<TABLE>
<CAPTION>
                                                             PERIOD FROM
                                                              INCEPTION
                                                            (FEBRUARY 21,       YEAR ENDED
                                                              1996) TO         DECEMBER 31,
                                                            DECEMBER 31,    ------------------
                                                                1996         1997       1998
                                                            -------------   -------    -------
<S>                                                         <C>             <C>        <C>
Revenues:
     License..............................................     $    --      $ 5,011    $13,901
     Service..............................................          --          552      3,184
                                                               -------      -------    -------
Total revenues............................................          --        5,563     17,085
Cost of revenues:
     License..............................................          --           13         75
     Service..............................................          --          621      1,964
                                                               -------      -------    -------
Total cost of revenues....................................          --          634      2,039
                                                               -------      -------    -------
Gross profit..............................................          --        4,929     15,046
Operating expenses:
     Research and development.............................         515        2,410      5,773
     Sales and marketing..................................         473        8,054     12,371
     General and administrative...........................         322        2,367      2,779
     Amortization of deferred compensation................          --           --        251
                                                               -------      -------    -------
Total operating expenses..................................       1,310       12,831     21,174
                                                               -------      -------    -------
Loss from operations......................................      (1,310)      (7,902)    (6,128)
Interest income...........................................          66          350        518
Interest expense..........................................          (1)         (12)       (30)
                                                               -------      -------    -------
Loss before income taxes..................................      (1,245)      (7,564)    (5,640)
Provision for income taxes................................          --          154         41
                                                               -------      -------    -------
Net loss..................................................      (1,245)      (7,718)    (5,681)
Other comprehensive loss:
     Translation adjustment...............................          --           --         (6)
                                                               -------      -------    -------
Comprehensive loss........................................     $(1,245)     $(7,718)   $(5,687)
                                                               =======      =======    =======
Basic and diluted net loss per share......................     $  (.81)     $ (1.57)   $  (.59)
                                                               =======      =======    =======
Weighted-average shares of common stock outstanding used
  in computing basic and diluted net loss per share.......       1,528        4,912      9,606
                                                               =======      =======    =======
Pro forma basic and diluted net loss per share
  (unaudited).............................................                             $  (.37)
                                                                                       =======
Shares used in computing pro forma basic and diluted net
  loss per share (unaudited)..............................                              15,359
                                                                                       =======
</TABLE>
 
                            See accompanying notes.
 
                                       F-4
<PAGE>   78
 
                                 MARIMBA, INC.
 
       CONSOLIDATED STATEMENTS OF REDEEMABLE CONVERTIBLE PREFERRED STOCK
               AND STOCKHOLDERS' EQUITY (NET CAPITAL DEFICIENCY)
                                 (IN THOUSANDS)
   
<TABLE>
<CAPTION>
                                                               STOCKHOLDERS' EQUITY (NET CAPITAL DEFICIENCY)
                                          REDEEMABLE      --------------------------------------------------------
                                         CONVERTIBLE                                        NOTE
                                       PREFERRED STOCK     COMMON STOCK     ADDITIONAL   RECEIVABLE
                                       ----------------   ---------------    PAID-IN        FROM        DEFERRED
                                       SHARES   AMOUNT    SHARES   AMOUNT    CAPITAL      OFFICER     COMPENSATION
                                       ------   -------   ------   ------   ----------   ----------   ------------
<S>                                    <C>      <C>       <C>      <C>      <C>          <C>          <C>
Issuance of common stock to
 founders............................     --    $   --    10,000   $   1      $    9       $  --        $    --
Issuance of Series A redeemable
 convertible preferred stock to
 investors, net of issuance costs of
 $38.................................  2,699     3,963       --       --          --          --             --
Net loss.............................     --        --       --       --          --          --             --
                                       -----    -------   ------   ------     ------       -----        -------
Balances at December 31, 1996........  2,699     3,963    10,000       1           9          --             --
Issuance of Series A redeemable
 convertible preferred stock to
 officer, net of issuance costs of
 $8..................................     67        92       --       --          --          --             --
Issuance of Series B redeemable
 convertible preferred stock to
 investors, net of issuance costs of
 $62.................................  2,987    14,898       --       --          --          --             --
Issuance of common stock upon
 exercise of stock options...........     --        --    2,850        1         494          --             --
Issuance of common stock for
 services............................     --        --       67       --          10          --             --
Issuance of common stock upon
 exercise of stock options by an
 officer in exchange for a note
 receivable..........................     --        --      300       --         150        (150)            --
Repurchases of common stock..........     --        --     (150)      --         (23)         --             --
Net loss.............................     --        --       --       --                      --             --
                                       -----    -------   ------   ------     ------       -----        -------
Balances at December 31, 1997........  5,753    18,953    13,067       2         640        (150)            --
Issuance of common stock upon
 exercise of stock options...........     --        --      239       --         230          --             --
Repurchases of common stock..........     --        --     (253)      --         (56)         --             --
Translation adjustment...............     --        --       --       --                      --             --
Interest on note receivable from an
 officer.............................     --        --       --       --                     (10)            --
Deferred compensation................     --        --       --       --       1,367          --         (1,367)
Amortization of deferred
 compensation........................     --        --       --       --          --          --            251
Net loss.............................     --        --       --       --          --          --             --
                                       -----    -------   ------   ------     ------       -----        -------
Balances at December 31, 1998........  5,753    $18,953   13,053   $   2      $2,181       $(160)       $(1,116)
                                       =====    =======   ======   ======     ======       =====        =======
 
<CAPTION>
                                       STOCKHOLDERS' EQUITY (NET CAPITAL DEFICIENCY)
                                       -----------------------------------------
                                                                   STOCKHOLDERS'
                                       CUMULATIVE                     EQUITY
                                       TRANSLATION   ACCUMULATED   (NET CAPITAL
                                       ADJUSTMENT      DEFICIT      DEFICIENCY)
                                       -----------   -----------   -------------
<S>                                    <C>           <C>           <C>
Issuance of common stock to
 founders............................      $--        $     --       $     10
Issuance of Series A redeemable
 convertible preferred stock to
 investors, net of issuance costs of
 $38.................................       --              --             --
Net loss.............................       --          (1,245)        (1,245)
                                           ---        --------       --------
Balances at December 31, 1996........       --          (1,245)        (1,235)
Issuance of Series A redeemable
 convertible preferred stock to
 officer, net of issuance costs of
 $8..................................       --              --             --
Issuance of Series B redeemable
 convertible preferred stock to
 investors, net of issuance costs of
 $62.................................       --              --
Issuance of common stock upon
 exercise of stock options...........       --              --            495
Issuance of common stock for
 services............................       --              --             10
Issuance of common stock upon
 exercise of stock options by an
 officer in exchange for a note
 receivable..........................       --              --             --
Repurchases of common stock..........       --              --            (23)
Net loss.............................       --          (7,718)        (7,718)
                                           ---        --------       --------
Balances at December 31, 1997........       --          (8,963)        (8,471)
Issuance of common stock upon
 exercise of stock options...........       --              --            230
Repurchases of common stock..........       --              --            (56)
Translation adjustment...............       (6)             --             (6)
Interest on note receivable from an
 officer.............................       --              --            (10)
Deferred compensation................       --              --             --
Amortization of deferred
 compensation........................       --              --            251
Net loss.............................       --          (5,681)        (5,681)
                                           ---        --------       --------
Balances at December 31, 1998........      $(6)       $(14,644)      $(13,743)
                                           ===        ========       ========
</TABLE>
    
 
                            See accompanying notes.
                                       F-5
<PAGE>   79
 
                                 MARIMBA, INC.
 
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
                                 (IN THOUSANDS)
 
<TABLE>
<CAPTION>
                                                              PERIOD FROM
                                                               INCEPTION
                                                             (FEBRUARY 21,       YEAR ENDED
                                                               1996) TO         DECEMBER 31,
                                                             DECEMBER 31,    ------------------
                                                                 1996         1997       1998
                                                             -------------   -------    -------
<S>                                                          <C>             <C>        <C>
OPERATING ACTIVITIES
Net loss...................................................     $(1,245)     $(7,718)   $(5,681)
Adjustments to reconcile net loss to net cash used in
  operating activities:
     Depreciation and amortization.........................          21          336        934
     Amortization of deferred compensation.................          --           --        251
     Other.................................................          --           --        (16)
     Changes in operating assets and liabilities:
       Accounts receivable, net............................         (50)      (4,541)     2,006
       Unbilled receivables................................          --           --     (1,036)
       Prepaid expenses and other current assets...........         (31)        (218)      (123)
       Accounts payable and accrued liabilities............         228        1,712       (544)
       Accrued compensation................................          --        1,535        169
       Deferred revenue....................................         200        7,397     (2,078)
       Other liabilities...................................          --           34          2
                                                                -------      -------    -------
          Net cash used in operating activities............        (877)      (1,463)    (6,116)
                                                                -------      -------    -------
INVESTING ACTIVITIES
Capital expenditures.......................................        (278)      (2,479)    (1,280)
Other assets...............................................          (7)        (250)       (42)
Purchases of short-term investments........................          --           --     (7,125)
Sales of short-term investments............................          --           --      3,000
                                                                -------      -------    -------
          Net cash used in investing activities............        (285)      (2,729)    (5,447)
                                                                -------      -------    -------
FINANCING ACTIVITIES
Proceeds from issuance of redeemable convertible preferred
  stock....................................................       3,963       14,990         --
Proceeds from issuance of common stock, net of
  repurchases..............................................          10          482        174
Proceeds from sale and lease back and equipment advances...          --          378        811
Principal payments under capital lease obligations.........          --          (67)      (124)
                                                                -------      -------    -------
          Net cash from financing activities...............       3,973       15,783        861
                                                                -------      -------    -------
Net increase (decrease) in cash and cash equivalents.......       2,811       11,591    (10,702)
Cash and cash equivalents at beginning of period...........          --        2,811     14,402
                                                                -------      -------    -------
Cash and cash equivalents at end of period.................     $ 2,811      $14,402    $ 3,700
                                                                =======      =======    =======
Supplemental disclosure of cash flow information
Interest paid..............................................     $     1      $    12    $    30
                                                                =======      =======    =======
Income taxes paid..........................................     $    --      $   154    $    41
                                                                =======      =======    =======
Supplemental disclosure of noncash financing activities
Common stock issued in exchange for note receivable from
  officer..................................................     $    --      $   150    $    --
                                                                =======      =======    =======
</TABLE>
 
                            See accompanying notes.
 
                                       F-6
<PAGE>   80
 
                                 MARIMBA, INC.
 
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
  Basis of Presentation
 
     Marimba was incorporated in Delaware on February 21, 1996. Marimba develops
and markets Internet-based software management solutions ("Castanet Products"),
that distribute, update, and manage applications and related data over corporate
intranets, extranets and the Internet. Marimba markets its products worldwide
through a combination of a direct sales force and OEM/distributor partners.
Substantially all of Marimba's license revenues are derived from sales of the
Castanet Products. The Castanet Products are the subject of a patent lawsuit.
Marimba believes that it has strong defenses against the lawsuit. However, the
failure of Marimba to prevail could have a material adverse effect on Marimba's
results of operations and financial condition. Currently, no reasonable estimate
can be made of the possible loss or range of loss that may arise from this
lawsuit. See Note 8.
 
     The consolidated financial statements include the accounts of Marimba and
its wholly owned subsidiary in the United Kingdom. Intercompany accounts and
transactions have been eliminated in consolidation.
 
     Marimba has incurred operating losses to date and had an accumulated
deficit of $14,644,000 at December 31, 1998. Marimba's activities have been
primarily financed through private placements of equity securities. Marimba may
need to raise additional capital through the issuance of debt or equity
securities. Such financing may not be available on terms satisfactory to
Marimba, if at all.
 
  Use of Estimates
 
     The preparation of financial statements in conformity with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the amounts reported in the financial statements and
accompanying notes. Actual results could differ materially from those estimates.
 
  Revenue Recognition
 
     License revenues are comprised of perpetual or multiyear license fees which
are primarily derived from contracts with corporate customers and resellers.
Such revenues are recognized after execution of a license agreement or receipt
of a definitive purchase order, and delivery of the product to end-user
customers, provided that there are no uncertainties surrounding product
acceptance, the license fees are fixed and determinable, collectibility is
probable and Marimba has no remaining obligations. Revenue on arrangements with
customers who are not the ultimate users (primarily resellers) is not recognized
until the product is delivered to the end user. If the fee due from the customer
is not fixed or determinable, revenue is recognized as payments become due from
the customer. If collectibility is not considered probable, revenue is
recognized when the fee is collected. Advance payments are recorded as deferred
revenue until the products are shipped, services are provided, or obligations
are met. Marimba's products do not require significant customization.
 
     Service revenues are comprised of revenue from maintenance agreements,
consulting and training fees. Software maintenance agreements provide technical
support and the right to unspecified upgrades on an if-and-when available basis.
 
     Revenue from maintenance agreements is deferred and recognized on a
straight-line basis over the life of the related agreement, which is typically
one year. Service revenues from training and consulting are recognized upon
completion of the work to be performed.
 
                                       F-7
<PAGE>   81
                                 MARIMBA, INC.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
 
  Revenue Recognition (continued)
     In October 1997, the Accounting Standards Executive Committee issued
Statement of Position 97-2 ("SOP 97-2"), as amended by SOP 98-4 and SOP 98-9,
"Software Revenue Recognition." These statements provide guidance on applying
generally accepted accounting principles in recognizing revenue on software
transactions. SOP 97-2, as amended by SOP 98-4, is effective for Marimba's
transactions entered into subsequent to January 1, 1998. The application of SOP
97-2 and SOP 98-4 has not had a material impact on Marimba's results of
operations.
 
     SOP 98-9 amends SOP 97-2 and 98-4, extending the deferral of the
application of certain provisions of SOP 97-2 amended by SOP 98-4 through fiscal
years beginning on or before March 15, 1999. All other provisions of SOP 98-9
are effective for transactions entered into in fiscal years beginning after
March 15, 1999. Marimba has not yet determined the effect of the final adoption
of SOP 98-9 on its financial condition or results of operations. However, SOP
98-9 may require more revenue to be deferred for certain types of transactions.
 
     Unbilled receivables consist of contractually obligated amounts not yet
billable by the Company.
 
  Research and Development
 
     Research and development expenditures are generally charged to operations
as incurred. Statement of Financial Accounting Standards No. 86, "Accounting for
the Costs of Computer Software to Be Sold, Leased or Otherwise Marketed,"
requires the capitalization of certain software development costs subsequent to
the establishment of technological feasibility, which, for Marimba, is
established upon completion of a working model. Costs incurred by Marimba
between completion of the working model and the point at which the product is
ready for general release have been insignificant. Therefore, through December
31, 1998, all research and development costs have been expensed as incurred.
 
  Cash, Cash Equivalents and Short-Term Investments
 
     Cash equivalents consist of financial instruments which are readily
convertible to cash and have original maturities of three months or less at the
time of acquisition. Marimba's cash and cash equivalents as of December 31, 1998
consist primarily of demand deposits and money market funds held by large
financial institutions in the United States. The carrying value of cash and cash
equivalents approximates fair value at December 31, 1997 and 1998.
 
     Marimba classifies, at the date of acquisition, its marketable securities
into available-for-sale categories in accordance with the provisions of the
Financial Accounting Standards Board's Statement of Financial Accounting
Standards No. 115, "Accounting for Certain Investments in Debt and Equity
Securities." Currently, Marimba classifies its securities as available-for-sale
which are reported at fair market value with the related unrealized gains and
losses included in stockholders' equity. Unrealized gains and losses were not
material for all periods presented. Realized gains and losses and declines in
value of securities judged to be other than temporary are included in interest
income. Interest and dividends on all securities are included in interest
income.
 
     Investments with maturities between three and twelve months are considered
short-term investments. Short-term investments consist of corporate notes and
market auction rate preferred stocks.
 
                                       F-8
<PAGE>   82
                                 MARIMBA, INC.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
 
  Cash, Cash Equivalents and Short-Term Investments (continued)
     The cost (which approximates fair value) of Marimba's investments at
December 31, 1998 consisted of commercial paper ($500,000), corporate notes
($1,025,000) and market auction rate preferred stock ($3,100,000).
 
     The following is a reconciliation of Marimba's cash, cash equivalents and
short-term investments to the balance sheet classifications:
 
<TABLE>
<CAPTION>
                                                         DECEMBER 31,
                                                       -----------------
                                                        1997       1998
                                                       -------    ------
                                                        (IN THOUSANDS)
<S>                                                    <C>        <C>
Amounts included in cash and cash equivalents........  $    --    $  500
Short-term investments...............................       --     4,125
                                                       -------    ------
          Total investments..........................       --     4,625
Money market fund....................................   14,402     2,689
Demand deposits......................................       --       511
                                                       -------    ------
          Total cash, cash equivalents and short-term
             investments.............................  $14,402    $7,825
                                                       =======    ======
</TABLE>
 
  Property and Equipment
 
     Marimba records property and equipment at cost and calculates depreciation
using the straight-line method over the estimated useful lives of the assets,
generally three to five years. Leasehold improvements are amortized over the
term of the lease.
 
  Accounting for Stock-Based Compensation
 
     Marimba has elected to follow Accounting Principles Board Opinion No. 25,
"Accounting for Stock Issued to Employees" (APB Opinion No. 25), and related
interpretations in accounting for its employee stock options because, as
discussed in Note 6, the alternative fair value accounting provided for under
Statement of Financial Accounting Standards No. 123, "Accounting for Stock-Based
Compensation" ("FAS 123"), requires use of option valuation models that were not
developed for use in valuing employee stock options. Under APB Opinion No. 25,
when the exercise price of Marimba's employee stock options equals the market
price of the underlying stock on the date of grant, no compensation expense is
recognized. See pro forma disclosures of applying FAS 123 included in Note 6.
 
  Comprehensive Loss
 
     In June 1997, the Financial Accounting Standards Board issued Statement of
Financial Accounting Standards No. 130, "Reporting Comprehensive Income" ("FAS
130"). FAS 130 establishes standards for the reporting and display of
comprehensive income and its components in a full set of general purpose
financial statements and is effective for fiscal years beginning after December
15, 1997. Marimba adopted FAS 130 in the year ended December 31, 1998.
 
                                       F-9
<PAGE>   83
                                 MARIMBA, INC.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
  Concentrations of Credit Risk and Other Risks
 
     Financial instruments that subject Marimba to credit risk consist primarily
of uninsured cash, cash equivalents and short-term investment balances held at
commercial banks and institutions primarily in the United States and trade
receivables from Marimba's customers. Marimba sells to customers in many
different industries. Marimba extends reasonably short credit terms in most
instances and performs ongoing credit evaluations but does not require
collateral. Marimba provides reserves for potential credit losses, and such
losses have been within management's expectations. To date, Marimba's write-offs
of bad debts have not been significant. During the years ended December 31, 1997
and 1998, Marimba added approximately $50,000 and $75,000 to its bad debt
reserves. Total write-offs of uncollectible accounts were $1,000 and $54,000 in
these periods.
 
     Revenues from one reseller represented 18% and 22% of total revenues for
the years ended December 31, 1997 and 1998. However, as of December 31, 1998
this customer will no longer be an active reseller of our products. The same
reseller accounted for 57% of accounts receivable at December 31, 1997. Sales to
another reseller represented 18% of total revenues for the year ended December
31, 1998. Two other customers accounted for 48% and 16% of the combined accounts
receivable and unbilled receivables accounts at December 31, 1998.
 
  Segment Information
 
     In June 1997, the Financial Accounting Standards Board issued Statement of
Financial Accounting Standards No. 131, "Disclosures about Segments of an
Enterprise and Related Information" ("FAS 131"). FAS 131 changes the way
companies report selected segment information in annual financial statements and
requires companies to report selected segment information in interim financial
reports to stockholders. FAS 131 is effective beginning in Marimba's year ended
December 31, 1998. Marimba operates solely in one segment, the development and
marketing of network application software, and therefore there is no impact to
Marimba's financial statements of adopting FAS 131. For the years ended December
31, 1997 and 1998, sales to customers outside the United States were $1,199,000
and $1,265,000. The majority of these sales were to customers in Asia.
 
  Net Loss Per Share
 
     Basic and diluted net loss per common share are presented in conformity
with FAS No. 128, "Earnings Per Share" ("FAS 128"), for all periods presented.
Pursuant to the Securities and Exchange Commission Staff Accounting Bulletin No.
98, common stock and convertible preferred stock issued or granted for nominal
consideration prior to the anticipated effective date of Marimba's initial
public offering must be included in the calculation of basic and diluted net
loss per common share as if they had been outstanding for all periods presented.
To date, Marimba has not had any issuances or grants for nominal consideration.
 
     In accordance with FAS 128, basic and diluted net loss per share has been
computed using the weighted-average number of shares of common stock outstanding
during the period, less shares subject to repurchase. Pro forma basic and
diluted net loss per share, as presented in the statements of operations, has
been computed as described above and also gives effect, under Securities and
Exchange Commission guidance, to the conversion of the redeemable convertible
preferred stock (using the if-converted method) from the original date of
issuance.
 
                                      F-10
<PAGE>   84
                                 MARIMBA, INC.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
 
  Net Loss Per Share (continued)
     The following table presents the calculation of basic and diluted and pro
forma basic and diluted net loss per share:
 
<TABLE>
<CAPTION>
                                                         PERIOD FROM
                                                          INCEPTION           YEAR ENDED
                                                     (FEBRUARY 21, 1996)     DECEMBER 31,
                                                             TO            -----------------
                                                      DECEMBER 31, 1996     1997      1998
                                                     -------------------   -------   -------
                                                      (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                                  <C>                   <C>       <C>
Net loss...........................................        $(1,245)        $(7,718)  $(5,681)
                                                           =======         =======   =======
Basic and diluted:
     Weighted-average shares of common stock
       outstanding.................................         10,000          11,474    13,081
     Less weighted-average shares subject to
       repurchase..................................         (8,472)         (6,562)   (3,475)
                                                           -------         -------   -------
     Weighted-average shares used in computing
       basic and diluted net loss per common
       share.......................................          1,528           4,912     9,606
                                                           -------         -------   -------
     Basic and diluted net loss per common share...        $  (.81)        $ (1.57)  $  (.59)
                                                           =======         =======   =======
Pro forma:
     Shares used above.............................                                    9,606
     Pro forma adjustment to reflect
       weighted-average effect of the assumed
       conversion of redeemable convertible
       preferred stock (unaudited).................                                    5,753
                                                                                     -------
     Shares used in computing pro forma basic and
       diluted net loss per share (unaudited)......                                   15,359
                                                                                     -------
     Pro forma basic and diluted net loss per share
       (unaudited).................................                                  $  (.37)
                                                                                     =======
</TABLE>
 
     Marimba has excluded all redeemable convertible preferred stock, warrants,
outstanding stock options and shares subject to repurchase by Marimba from the
calculation of diluted loss per share because all such securities are
antidilutive for all periods presented. Weighted-average options and warrants
outstanding to purchase 375,000, 1,261,000, and 1,483,000 shares of common and
redeemable convertible preferred stock for the years ended December 31, 1996,
1997, and 1998, were not included in the computation of diluted net loss per
share because the effect would be antidilutive. Such securities, had they been
dilutive, would have been included in the computation of diluted net loss per
share using the treasury stock method.
 
  Unaudited Pro Forma Stockholders' Equity
 
     If the offering contemplated by this prospectus is consummated, all of the
redeemable convertible preferred stock outstanding will automatically be
converted into common stock. Unaudited pro forma stockholders' equity at
December 31, 1998, as adjusted for the assumed conversion of redeemable
 
                                      F-11
<PAGE>   85
                                 MARIMBA, INC.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
 
  Unaudited Pro Forma Stockholders' Equity (continued)
convertible preferred stock based on the shares of redeemable convertible
preferred stock outstanding at December 31, 1998, is disclosed on the balance
sheet.
 
  Recent Accounting Pronouncements
 
     In June 1998, the FASB issued FAS No. 133, "Accounting for Derivative
Instruments and Hedging Activities" ("FAS 133"). Marimba is required to adopt
FAS 133 for the year ending December 31, 2000. FAS 133 establishes methods of
accounting for derivative financial instruments and hedging activities related
to those instruments as well as other hedging activities. Because Marimba
currently holds no derivative financial instruments and does not currently
engage in hedging activities, adoption of FAS 133 is expected to have no
material impact on Marimba's financial condition or results of operations.
 
     In March 1998, the American Institute of Certified Public Accountants
issued SOP 98-1, "Accounting for the Costs of Computer Software Developed or
Obtained for Internal Use" ("SOP 98-1"). SOP 98-1 requires that entities
capitalize certain costs related to internal use software once certain criteria
have been met. Marimba is required to implement SOP 98-1 for the year ending
December 31, 1999. Adoption of SOP 98-1 is expected to have no material impact
on Marimba's financial condition or results of operations.
 
2. PROPERTY AND EQUIPMENT
 
     Property and equipment consist of the following:
 
<TABLE>
<CAPTION>
                                                 DECEMBER 31,
                                               -----------------
                                                1997      1998
                                               ------    -------
                                                (IN THOUSANDS)
<S>                                            <C>       <C>
Furniture and equipment......................  $1,191    $   759
Computer equipment...........................   1,440      3,036
Leasehold improvements.......................     125        241
                                               ------    -------
                                                2,756      4,036
Accumulated depreciation and amortization....    (355)    (1,289)
                                               ------    -------
Property and equipment, net..................  $2,401    $ 2,747
                                               ======    =======
</TABLE>
 
     Property and equipment at December 31, 1997 and 1998 includes assets under
capitalized leases of approximately $378,000. Accumulated amortization related
to leased assets was approximately $223,000 and $280,000 at December 31, 1997
and 1998.
 
3. LEASES AND COMMITMENTS
 
     In January 1997, as part of a sale-leaseback transaction, Marimba entered
into a $500,000 capital lease line of credit for financing of equipment, which
expired on December 31, 1997. Marimba borrowed $378,000 under the line of
credit. This amount bears interest at a rate of 3.5% and is collateralized by
the equipment purchased. Under the terms of the master lease agreement, Marimba
will have the option to purchase the leased equipment at a negotiated price at
the end of the 36-month lease term. In connection
 
                                      F-12
<PAGE>   86
                                 MARIMBA, INC.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
 3. LEASES AND COMMITMENTS (CONTINUED)
with the capital lease, Marimba issued a warrant that entitles the holder to
purchase 16,865 shares of Series A redeemable convertible preferred stock (see
Note 6).
 
     Marimba leases its office facilities under various noncancelable operating
lease agreements. Marimba's primary facility lease expires in 2000.
 
     As of December 31, 1998, future minimum lease payments under capital leases
and noncancelable operating leases are as follows:
 
<TABLE>
<CAPTION>
                                                              CAPITAL   OPERATING
                                                              LEASES     LEASES
                                                              -------   ---------
                                                                (IN THOUSANDS)
<S>                                                           <C>       <C>
Years ending December 31:
1999........................................................   $ 133     $1,370
2000........................................................      60        517
2001........................................................      --        140
2002........................................................      --        148
2003 and thereafter.........................................      --        421
                                                               -----     ------
          Total minimum lease and principal payments........     193     $2,596
                                                                         ======
Amount representing interest................................      (6)
                                                               -----
Present value of future payments............................     187
Current portion of capital lease obligations................    (127)
                                                               -----
Noncurrent portion..........................................   $  60
                                                               =====
</TABLE>
 
     Rent expense under operating leases totaled approximately $61,000,
$375,000, and $1,245,000 for the years ended December 31, 1996, 1997, and 1998.
 
4. BANK ARRANGEMENTS
 
     In May 1998, Marimba entered into a credit agreement with a bank which
provides for revolving credit loans, letters of credit, and nonformula and
equipment advance facilities aggregating up to $6,500,000. The loans and
advances are secured by substantially all of Marimba's assets. All of the credit
facilities bear interest at a rate equal to the prime rate (7.75% at December
31, 1998). The credit agreement contains certain financial and reporting
covenants, including a restriction on the payment of dividends. Marimba was in
compliance with these covenants at December 31, 1998.
 
     The amount available under the revolving credit facility is limited to the
lower of $4,000,000 and an amount equal to 80% of eligible accounts receivable,
which available amount is reduced by the amount of outstanding letters of
credit. Under the agreement, letters of credit can be drawn up to an amount not
to exceed $500,000. As of December 31, 1998, no revolving credit loans had been
borrowed or letters of credit issued.
 
     Marimba may borrow up to $1,000,000 under the nonformula-based advance. As
of December 31, 1998, no amounts have been borrowed under this facility.
 
     The equipment advance facility provides Marimba with the ability to borrow
up to $1,500,000. Principal and interest are due in monthly installments
beginning in June 1999 and ending in May 2002. As of December 31, 1998, Marimba
had $811,000 of outstanding borrowings under the facility. The fair
 
                                      F-13
<PAGE>   87
                                 MARIMBA, INC.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
4. BANK ARRANGEMENTS (CONTINUED)
value of the equipment advance is estimated based on current interest rates
available to Marimba for debt instruments with similar terms, degrees of risk,
and remaining maturities. The carrying value of the equipment advance
approximates its fair value.
 
     Principal payments under this equipment advance are as follows (in
thousands):
 
<TABLE>
<S>                                                           <C>
1999........................................................  $ 159
2000........................................................    270
2001........................................................    270
2002........................................................    112
                                                              -----
          Total payments....................................    811
Less current portion........................................   (159)
                                                              -----
Long-term portion...........................................  $ 652
                                                              =====
</TABLE>
 
5. PREFERRED STOCK
 
     Marimba is authorized to issue up to 15,000,000 shares of preferred stock,
issuable in series, with the rights and preferences of each designated series to
be determined by Marimba's Board of Directors. To date, 2,800,000 and 3,050,000
shares have been designated as Series A and Series B redeemable convertible
preferred stock (the "Series A and Series B preferred stock").
 
     Each share of Series A and Series B preferred stock is convertible, at the
option of the holder, into one share of common stock, subject to certain
adjustments for dilutive issuances. Outstanding shares of convertible preferred
stock automatically convert into common stock upon the closing of an
underwritten public offering of common stock under the Securities Act of 1933 in
which Marimba receives at least $12,500,000 in gross proceeds and the price per
share is at least $7.51.
 
     Series A and Series B preferred stockholders are entitled to noncumulative
dividends of $.12 and $.40 per share. Dividends will be paid only when declared
by the Board of Directors out of legally available funds. No dividends have been
declared as of December 31, 1998.
 
     Series A and Series B preferred stockholders are entitled to receive, upon
a liquidating event, an amount per share equal to the issuance price, plus all
declared but unpaid dividends. Thereafter, the remaining assets and funds, if
any, shall be distributed among the holders of Series A and Series B preferred
stock and common stock pro rata based on the number of shares of common stock
held by each (assuming conversion of all such Series A and Series B preferred
stock). If any assets remain after the holders of Series A and Series B
preferred stock have received an aggregate of $4.45 and $7.51 per share, the
remaining assets will be distributed to the holders of the common stock pro rata
based on the number of shares of common stock held by each.
 
     On or at any time after August 15, 2003, Marimba shall, upon written
request from the holders of a majority of the then outstanding shares of Series
A and Series B preferred stock, redeem in whole or in part the Series A and
Series B preferred stock by paying in cash a sum equal to the original issuance
prices of $1.48 and $5.01 per share.
 
     Series A and Series B preferred stockholders have voting rights equal to
the common shares issuable upon conversion of the Series A and Series B
preferred stock.
 
                                      F-14
<PAGE>   88
                                 MARIMBA, INC.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
6. STOCKHOLDERS' EQUITY
 
  Common Stock
 
   
     In February 1996, Marimba issued and sold an aggregate of 10,000,000 shares
of its common stock to the founders of Marimba under Restricted Common Stock
Purchase Agreements. The stock vests ratably over a period of three years. As of
December 31, 1998, 556,000 shares are subject to repurchase.
    
 
     At December 31, 1998, Marimba has reserved 5,770,000 shares of its common
stock for issuance upon conversion of its Series A and Series B preferred stock
and conversion of preferred shares issued upon exercise of outstanding warrants
and 3,422,341 shares of common stock for issuances upon exercise of options then
outstanding and available for grant under Marimba's 1996 Stock Option Plan.
 
     In November 1997, Marimba granted 300,000 options to purchase common stock
under Marimba's 1996 Stock Option Plan to an officer of Marimba who immediately
exercised the options in exchange for a full recourse note receivable of
$150,000. This note, which bears interest at 5.69%, was collateralized by
certain personal assets of the officer and was paid in full on January 8, 1999.
These shares are subject to a right of repurchase that lapses over three years.
 
  1996 Stock Option Plan
 
     In November 1996, the Board of Directors adopted the 1996 Stock Option Plan
(the "1996 Plan") for issuance of common stock to eligible participants.
Incentive stock options and nonstatutory stock options may be granted under the
1996 Plan at prices not less than 100% and 85% of the fair value on the date of
grant. Options expire after 10 years. Options under the plan are immediately
exercisable; however, shares issued are subject to Marimba's right to repurchase
such shares at the original issuance price, which right lapses in a series of
installments measured from the vesting commencement date of the option. As of
December 31, 1998, 1,174,000 shares are subject to repurchase. Options generally
vest and the repurchase rights lapse ratably over a period of three or four
years from the date of grant.
 
     Pro forma information regarding net loss and net loss per share is required
by FAS 123, and has been determined as if Marimba had accounted for its employee
stock options under the fair value method of that Statement. The fair value of
options was estimated at the date of grant using a minimum value option pricing
model with the following weighted-average assumptions: risk-free interest rate
of 6%, 6% and 5% in 1996, 1997 and 1998, and an expected life of four years and
no dividends for all years presented.
 
     For purposes of pro forma disclosures, the estimated fair value of the
options is amortized to expense over the vesting period of the options using a
graded vesting method. The effects of applying FAS 123 for pro forma disclosures
are not likely to be representative of the effects on reported net loss for
future years.
 
                                      F-15
<PAGE>   89
                                 MARIMBA, INC.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
6. STOCKHOLDERS' EQUITY (CONTINUED)
 
  1996 Stock Option Plan (continued)
 
<TABLE>
<CAPTION>
                                                  PERIOD FROM
                                                   INCEPTION
                                                 (FEBRUARY 21,             YEARS ENDED
                                                   1996) TO               DECEMBER 31,
                                                 DECEMBER 31,       -------------------------
                                                     1996            1997            1998
                                                 -------------      -------      ------------
                                                    (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                              <C>                <C>          <C>
Net loss:
  As reported..................................     $(1,245)        $(7,718)       $(5,681)
                                                    =======         =======        =======
  Pro forma....................................     $(1,249)        $(7,771)       $(6,123)
                                                    =======         =======        =======
Pro forma basic and diluted net loss per share:
  As reported..................................                                    $  (.37)
                                                                                   =======
  Pro forma....................................                                    $  (.40)
                                                                                   =======
</TABLE>
 
     Activity under the 1996 Stock Option Plan was as follows:
 
<TABLE>
<CAPTION>
                                                               OPTIONS OUTSTANDING
                                                  ---------------------------------------------
                                      SHARES        NUMBER          PRICE          WEIGHTED-
                                    AVAILABLE         OF             PER            AVERAGE
                                    FOR GRANT       SHARES          SHARE        EXERCISE PRICE
                                    ----------    ----------    -------------    --------------
<S>                                 <C>           <C>           <C>              <C>
Authorized........................   3,174,603            --         --             --
Granted...........................  (1,499,000)    1,499,000        $ .15            $ .15
                                    ----------    ----------
Balance at December 31, 1996......   1,675,603     1,499,000        $ .15            $ .15
Authorized........................   2,000,000            --         --             --
Granted...........................  (2,529,610)    2,529,610    $ .15 - $ .75        $ .31
Exercised.........................          --    (3,217,110)   $ .15 - $ .50        $ .20
Repurchased.......................     150,000            --         --             --
Canceled..........................      17,000       (17,000)   $ .15 - $ .75        $ .68
                                    ----------    ----------
Balance at December 31, 1997......   1,312,993       794,500    $ .15 - $ .75        $ .41
Authorized........................   1,300,000            --         --             --
Granted...........................  (2,017,800)    2,017,800    $1.00 - $8.50        $3.54
Exercised.........................          --      (238,569)   $ .50 - $2.00        $ .96
Repurchased.......................     253,417            --         --             --
Canceled..........................     381,163      (381,163)   $ .15 - $3.50        $ .84
                                    ----------    ----------
Balance at December 31, 1998......   1,229,773     2,192,568    $ .15 - $8.50        $3.16
                                    ==========    ==========
</TABLE>
 
                                      F-16
<PAGE>   90
                                 MARIMBA, INC.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
6. STOCKHOLDERS' EQUITY (CONTINUED)
 
  1996 Stock Option Plan (continued)
 
<TABLE>
<CAPTION>
                         OPTIONS OUTSTANDING AND EXERCISABLE
                       ----------------------------------------
                                                     WEIGHTED-
                                                      AVERAGE
                        NUMBER       WEIGHTED-       REMAINING
                          OF          AVERAGE       CONTRACTUAL
EXERCISE PRICE RANGE    SHARES     EXERCISE PRICE      LIFE
- --------------------   ---------   --------------   -----------
                                                    (IN YEARS)
<S>                    <C>         <C>              <C>
             $.15         72,000       $ .15           7.94
    $ .50 - $ .75        341,500       $ .54           8.77
    $1.00 - $1.50        255,818       $1.35           9.13
    $1.75 - $2.00        132,000       $1.83           9.34
    $3.00 - $3.50      1,042,000       $3.14           9.67
    $7.00 - $8.50        349,250       $8.21           9.94
                       ---------
                       2,192,568       $3.16           9.43
                       =========
</TABLE>
 
     At December 31, 1997, options to purchase 14,249 shares of common stock
were vested at a weighted-average exercise price of $.18 per share. At December
31, 1998, outstanding options to purchase 188,289 outstanding shares of common
stock were vested at a weighted-average exercise price of $.57 per share.
 
     The weighted-average fair value of options granted during 1996, 1997 and
1998 with an exercise price equal to the fair value of Marimba's common stock on
the date of grant was $.03, $.06 and $.73. The weighted-average fair value of
options granted during 1998 with an exercise price below the deemed fair value
of Marimba's common stock on the date of grant was $2.07.
 
     In connection with the grant of certain share options to employees through
December 31, 1998, Marimba recorded deferred compensation of approximately
$1,367,000 for the aggregate differences between the exercise prices of options
at their dates of grant and the deemed fair value for accounting purposes of the
common shares subject to such options. Such amount is included as a reduction of
stockholders' equity and is being amortized on a graded vesting method. The
compensation expense of $251,000 in 1998 relates to options awarded to employees
in all operating expense categories. This amount has not been separately
allocated to these categories.
 
  Warrants
 
     In January 1997, in connection with the sale-leaseback transaction, Marimba
issued a warrant that entitles the holder to purchase 16,865 shares of Series A
redeemable convertible preferred stock at an exercise price of $1.48 per share.
This warrant is exercisable through the earlier of the effective date of a
merger of Marimba or January 31, 2004. Marimba determined that the value of the
warrant was immaterial.
 
7. INCOME TAXES
 
     Marimba's provision for income taxes for the years ended December 31, 1997
and 1998 consists entirely of foreign withholding taxes.
 
                                      F-17
<PAGE>   91
                                 MARIMBA, INC.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
7. INCOME TAXES (CONTINUED)
     As of December 31, 1998, Marimba had federal net operating loss
carryforwards of approximately $11,100,000. Marimba also had federal research
and development tax credit carryforwards of approximately $400,000. The net
operating loss and credit carryforwards will expire at various dates beginning
on 2011 through 2018, if not utilized.
 
     Utilization of the net operating losses and credits may be subject to a
substantial annual limitation due to the ownership change provisions of the
Internal Revenue Code of 1986 and similar state provisions. The annual
limitation may result in the expiration of net operating losses and credits
before utilization.
 
     Significant components of Marimba's deferred tax assets are as follows:
 
<TABLE>
<CAPTION>
                                                                 DECEMBER 31,
                                                              ------------------
                                                               1997       1998
                                                              -------    -------
                                                                (IN THOUSANDS)
<S>                                                           <C>        <C>
Deferred tax assets:
  Net operating loss carryforwards..........................  $ 3,300    $ 4,400
  Research credit carryforwards.............................      200        600
  Deferred revenue..........................................      100        900
  Other.....................................................       --        200
                                                              -------    -------
          Total deferred tax assets.........................    3,600      6,100
Valuation allowance.........................................   (3,600)    (6,100)
                                                              -------    -------
Net deferred tax assets.....................................  $    --    $    --
                                                              =======    =======
</TABLE>
 
     The valuation allowance for deferred tax assets increased by approximately
$3,100,000 in the year ended December 31, 1997.
 
8. LEGAL MATTERS
 
     On March 3, 1997, Novadigm, Inc. filed a complaint against Marimba in the
United States District Court for the Northern District of California, alleging
infringement of a patent held by Novadigm. Novadigm alleges that Marimba's
infringement relates to certain methods for updating data and software over a
computer network used in the Castanet products. In its complaint, Novadigm
requests preliminary and permanent injunctions prohibiting Marimba and other
specified persons from making, using or selling any infringing products, as well
as damages, costs, and attorneys' fees. The complaint also alleges that Marimba
has willfully infringed Novadigm's Patent, and seeks up to triple damages
pursuant to the United States Patent Act. To date, both parties have conducted
substantial discovery. If the court does not enter judgment based on any
dispositive motions, a jury trial of this action is currently scheduled to begin
in September 1999.
 
     Marimba believes that it has strong defenses against Novadigm's lawsuit.
Accordingly, Marimba intends to defend this suit vigorously. However, Marimba
may not prevail in this litigation. Litigation is subject to inherent
uncertainties, especially in cases such as this where sophisticated factual
issues must be assessed and complex technical issues must be decided. In
addition, cases such as this are likely to involve issues of law that are
evolving, presenting further uncertainty. Marimba's defense of this litigation,
regardless of the merits of the complaint, has been, and will likely continue to
be, time-consuming, costly and a diversion for Marimba's technical and
management personnel. However, the
 
                                      F-18
<PAGE>   92
                                 MARIMBA, INC.
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
8. LEGAL MATTERS (CONTINUED)
failure of Marimba to prevail in this litigation could have a material adverse
effect on the Company's results of operations and financial condition.
 
9. EVENTS SUBSEQUENT TO DATE OF AUDITOR'S REPORT (UNAUDITED)
 
  1999 Employee Stock Purchase Plan
 
     On February 2, 1999, the Board of Directors approved the adoption of
Marimba's 1999 employee stock purchase plan (the "1999 Purchase Plan"), subject
to stockholder approval. A total of 500,000 shares of common stock has been
reserved for issuance under the 1999 Purchase Plan, plus, commencing on January
1, 2000, annual increases equal to the lesser of 500,000 shares, 2% of the
outstanding common shares on such date or a lesser amount determined by the
Board of Directors. The 1999 Purchase Plan permits eligible employees to acquire
shares of Marimba's common stock through periodic payroll deductions of up to
15% of base cash compensation. No more than 500 shares may be purchased by each
employee on any purchase date. Each offering period will have a maximum duration
of 24 months. The price at which the common stock may be purchased is 85% of the
lesser of the fair market value of Marimba's common stock on the first day of
the applicable offering period or on the last day of the respective purchase
period. The initial offering period will commence on the effectiveness of the
initial public offering and will end on April 30, 2001.
 
  1999 Omnibus Equity Incentive Plan
 
   
     On February 2, 1999, the Board of Directors approved the adoption of
Marimba's 1999 Omnibus Equity Incentive Plan (the "1999 Omnibus Plan"), subject
to stockholder approval. A total of 1,250,000 shares of common stock have been
reserved for issuance to eligible participants under the 1999 Omnibus Plan. The
types of awards that may be made under the 1999 Omnibus Plan are options to
purchase shares of common stock, stock appreciation rights, restricted shares
and stock units. Any shares not yet issued under Marimba's 1996 Stock Plan as of
the date of Marimba's initial public offering will be available for grant under
the 1999 Omnibus Plan. The exercise price for incentive stock options may not be
less than 100% of the fair market value of Marimba's common stock on the date of
grant (85% for nonstatutory options). In the event of a change in control of
Marimba, an option or award under the 1999 Omnibus Plan will become fully
exercisable and fully vested if the option or award is not assumed by the
surviving corporation or the surviving corporation does not substitute
comparable awards for the awards granted under the 1999 Omnibus Plan.
    
 
  1999 Non-Employee Directors Option Plan
 
     On February 2, 1999, the Board of Directors approved the adoption of
Marimba's Non-Employee Directors Option Plan (the "1999 Directors Plan"),
subject to stockholder approval. A total of 150,000 shares of common stock have
been reserved per issuance to non-employee members of the Board. Commencing
January 1, 2000, the number of shares reserved per issuance will be increased
automatically to restore the total number of shares available under this plan to
150,000 shares.
 
                                      F-19
<PAGE>   93
 
                                      LOGO
 
   
     Until                      , 1999, all dealers that buy, sell or trade our
common stock, whether or not participating in this offering, may be required to
deliver a prospectus. This is in addition to the dealers' obligation to deliver
a prospectus when acting as underwriters and with respect to their unsold
allotments or subscriptions.
    
 
   
     For investors outside the United States: Neither we nor any of the
underwriters have done anything that would permit this offering or possession or
distribution of this prospectus in any jurisdiction where action for that
purpose is required, other than in the United States. You are required to inform
yourselves about and to observe any restrictions relating to this offering and
the distribution of this prospectus.
    
<PAGE>   94
 
                                    PART II
 
                     INFORMATION NOT REQUIRED IN PROSPECTUS
 
ITEM 13. OTHER EXPENSES OF ISSUANCE AND DISTRIBUTION
 
   
     The following table presents the costs and expenses, other than
underwriting discounts and commissions, payable by us in connection with the
sale of common stock being registered. All amounts are estimates except the SEC
registration fee and the NASD filing fees.
    
 
<TABLE>
<S>                                                           <C>
SEC Registration fee........................................  $   20,461
NASD fee....................................................       7,860
Nasdaq National Market listing fee..........................      50,000
Printing and engraving expenses.............................     250,000
Legal fees and expenses.....................................     350,000
Accounting fees and expenses................................     200,000
Blue sky fees and expenses..................................      10,000
Custodian and transfer agent fees...........................      10,000
Miscellaneous fees and expenses.............................     201,679
                                                              ----------
          Total.............................................  $1,100,000
                                                              ==========
</TABLE>
 
ITEM 14. INDEMNIFICATION OF DIRECTORS AND OFFICERS
 
   
     Section 145 of the Delaware General Corporation Law authorizes a court to
award or a corporation's board of directors to grant indemnification to
directors and officers in terms sufficiently broad to permit indemnification
under limited circumstances for liabilities, including reimbursement for
expenses incurred, arising under the Securities Act of 1933, as amended (the
"Securities Act"). Article VII, Section 6, of our bylaws provides for mandatory
indemnification of our directors and officers and permissible indemnification of
employees to the maximum extent permitted by the Delaware General Corporation
Law. Our Certificate of Incorporation provides that, under Delaware law, our
officers and directors shall not be liable for monetary damages for breach of
the officers' or directors' fiduciary duty as officers or directors to us and
our stockholders. This provision in the Certificate of Incorporation does not
eliminate the officers' or directors' fiduciary duty, and in appropriate
circumstances, equitable remedies like injunctive or other forms of non-monetary
relief will remain available under Delaware law. In addition, each officer or
director will continue to be subject to liability for breach of the officer's or
director's duty of loyalty to us for acts or omissions not in good faith or
involving intentional misconduct, for knowing violations of law, for actions
leading to improper personal benefit to the officer or director, and for payment
of dividends or approval of stock repurchases or redemptions that are unlawful
under Delaware law. The provision also does not affect an officer's or
director's responsibilities under any other law, like the federal securities
laws or state or federal environmental laws. We have entered into
indemnification agreements with our officers and directors, a form of which is
attached as Exhibit 10.1 and incorporated by reference. The indemnification
agreements provide our officers and directors with further indemnification to
the maximum extent permitted by the Delaware General Corporation Law. Reference
is made to Section 9 of the underwriting agreement contained in Exhibit 1.1 to
this prospectus, indemnifying officers and directors of ours against limited
liabilities.
    
 
                                      II-1
<PAGE>   95
 
ITEM 15. RECENT SALES OF UNREGISTERED SECURITIES
 
     Since inception, we have issued and sold the following securities:
 
          1. We granted direct issuances or stock options to purchase 6,259,910
     shares of our common stock at exercise prices ranging from $.15 to $13.00
     per share to employees, consultants, directors and other service providers
     under our 1996 Stock Plan.
 
   
          2. From inception through March 31, 1999, we issued and sold an
     aggregate of 3,855,682 shares of our common stock to employees,
     consultants, directors and other service providers for aggregate
     consideration of approximately $1,640,242 under direct issuances or
     exercises of options granted under our 1996 Stock Plan.
    
 
   
          3. In February 1996, we issued and sold an aggregate of 10,000,000
     shares of our common stock (which numbers reflect the one for two and
     one-half stock split effected August 8, 1996) to each of Kim K. Polese,
     Arthur A. van Hoff, Jonathan Payne and Sami Shaio, our founders, for
     aggregate consideration of $10,000 under Restricted Common Stock Purchase
     Agreements.
    
 
          4. In August 1996 and January 1997, we issued and sold an aggregate of
     2,765,870 shares of our Series A Preferred Stock for an aggregate purchase
     price of approximately $4,100,125.
 
          5. In February 1997, we issued a warrant to purchase 16,865 shares of
     our Series A Preferred Stock at an exercise price of $1.4824 per share.
 
          6. In August, September, October and November 1997, we issued and sold
     2,987,696 shares of our Series B Preferred Stock for an aggregate purchase
     price of approximately $14,959,991.
 
   
     The sale of the above securities was deemed to be exempt from registration
under the Securities Act in reliance upon Section 4(2) of the Securities Act or
Regulation D promulgated thereunder, or Rule 701 promulgated under Section 3(b)
of the Securities Act as transactions by an issuer not involving any public
offering or transactions under compensation benefit plans and contracts relating
to compensation as provided under Rule 701. The recipients of securities in each
transaction represented their intentions to acquire the securities for
investment only and not with a view to or for sale in connection with any
distribution and appropriate legends were affixed to the share certificates
issued in these transactions. All recipients had adequate access, through their
relationships with us, to information about us.
    
 
ITEM 16. EXHIBITS AND FINANCIAL STATEMENT SCHEDULES
 
(a) EXHIBITS
 
   
<TABLE>
<CAPTION>
    EXHIBIT
      NO.                              DESCRIPTION
    -------                            -----------
    <C>        <S>
      1.1**    Form of Underwriting Agreement.
      3.1**    Amended and Restated Certificate of Incorporation of the
               Registrant.
      3.2**    Certificate of Correction to Amended and Restated
               Certificate of Incorporation.
      3.3**    Form of Third Amended and Restated Certificate of
               Incorporation to be filed upon the closing of the offering
               made pursuant to this Registration Statement.
      3.4**    Bylaws of the Registrant.
      3.5**    Amended and Restated Bylaws of the Registrant to be
               effective upon the closing of the offering made pursuant to
               this Registration Statement.
      4.1      Reference is made to Exhibits 3.1, 3.2, 3.3, 3.4 and 3.5.
      4.2**    Form of Registrant's Common Stock certificate.
      4.3**    Amended and Restated Investors' Rights Agreement dated
               August 25, 1997.
</TABLE>
    
 
                                      II-2
<PAGE>   96
 
   
<TABLE>
<CAPTION>
    EXHIBIT
      NO.                              DESCRIPTION
    -------                            -----------
    <C>        <S>
      4.4**    Form of Amendment and Waiver of Registration Rights under
               the Amended and Restated Investors' Rights Agreement.
      4.5**    Warrant to purchase shares of Series A Preferred Stock of
               the Registrant issued to Lighthouse Capital Partners II,
               L.P.
      5.1**    Opinion of Gunderson Dettmer Stough Villeneuve Franklin &
               Hachigian, LLP.
     10.1**    Form of Indemnification Agreement entered into by the
               Registrant with each of its directors and executive
               officers.
     10.2**    1999 Omnibus Equity Incentive Plan and forms of agreements
               thereunder.
     10.3**    Employee Stock Purchase Plan.
     10.4**    1999 Non-Employee Directors Option Plan.
     10.5      Assignment and Assumption of Sublease between Quickturn
               Design Systems, Inc. and ilicon, Inc. dated January 31,
               1999.
     10.6**    Loan and Security Agreement between the Registrant and
               Silicon Valley Bank dated May 27, 1998.
    10.7**+    Original Equipment Manufacturer Agreement between Tivoli
               Systems Subsidiary, Inc. and the Registrant dated March 6,
               1998.
    10.8**+    Amendment No. 1 to Original Equipment Manufacturer Agreement
               between Tivoli Systems, Inc. and the Registrant dated
               February 8, 1999.
    10.9**+    Reseller Agreement between Tivoli Systems Subsidiary, Inc.
               and the Registrant dated August 14, 1997.
    10.10**+   Amendment No. 1 to Reseller Agreement between Tivoli
               Systems, Inc. and the Registrant dated June 1, 1998.
    10.11**    Amendment No. 2 to Reseller Agreement between Tivoli
               Systems, Inc. and the Registrant dated June 30, 1998.
    10.12**    Reseller License Guide to Reseller Agreement between Tivoli
               Systems, Inc. and the Registrant dated November 23, 1998.
     10.13+    Pricing Guide to Reseller Agreement between Tivoli Systems,
               Inc. and the Registrant dated November 23, 1998.
    10.14**    Amendment No. 3 to Reseller Agreement between Tivoli
               Systems, Inc. and the Registrant dated February 9, 1999.
     23.1      Consent of Ernst & Young LLP, independent auditors.
     23.2**    Consent of Counsel. Reference is made to Exhibit 5.1.
     24.1**    Power of Attorney.
     27.1**    Financial Data Schedule.
     99.1**    Order of the United States District Court for the Northern
               District of California, San Jose Division dated December 28,
               1998.
     99.2      Consent of the Hurwitz Group.
     99.3**    Consent of Blakely, Sokoloff, Taylor & Zafman, LLP.
</TABLE>
    
 
- -------------------------
** Previously filed.
 
+ Confidential treatment requested.
 
(b) FINANCIAL STATEMENT SCHEDULES
 
   
     All schedules have been omitted because the information required to be
presented in them is not applicable or is shown in the consolidated financial
statements or related notes.
    
 
                                      II-3
<PAGE>   97
 
ITEM 17. UNDERTAKINGS
 
   
     We undertake to provide to the underwriters at the closing specified in the
underwriting agreement, certificates in the denominations and registered in the
names as required by the underwriters to permit prompt delivery to each
purchaser.
    
 
   
     Insofar as indemnification for liabilities arising under the Securities Act
may be permitted to directors, officers and controlling persons of the
Registrant under the Delaware General Corporation Law, the Certificate of
Incorporation or our bylaws, the underwriting agreement, or otherwise, we have
been advised that in the opinion of the Securities and Exchange Commission this
indemnification is against public policy as expressed in the Securities Act, and
is, therefore, unenforceable. In the event that a claim for indemnification
against these liabilities, other than the payment by us of expenses incurred or
paid by a director, officer, or controlling person of ours in the successful
defense of any action, suit or proceeding, is asserted by a director, officer or
controlling person in connection with the securities being registered in this
offering, we will, unless in the opinion of our counsel the matter has been
settled by controlling precedent, submit to a court of appropriate jurisdiction
the question of whether this indemnification by us is against public policy as
expressed in the Securities Act and will be governed by the final adjudication
of this issue.
    
 
   
     We undertake that:
    
 
   
          (1) For purposes of determining any liability under the Securities
     Act, 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 us under 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 any liability under the Securities
     Act, each post-effective amendment that contains a form of prospectus shall
     be deemed to be a new registration statement relating to the securities
     offered, and the offering of these securities at that time shall be deemed
     to be the initial bona fide offering.
    
 
                                      II-4
<PAGE>   98
 
                                   SIGNATURES
 
   
     Pursuant to the requirements of the Securities Act of 1933, the Registrant
has duly caused this Amendment No. 4 to the Registration Statement to be signed
on its behalf by the undersigned, thereunto duly authorized, in the City of
Mountain View, State of California, on this 20th day of April, 1999.
    
 
                                      MARIMBA, INC.
 
                                      By:         /s/ KIM K. POLESE
                                         ---------------------------------------
                                                      Kim K. Polese
                                          President and Chief Executive Officer
 
     Pursuant to the requirements of the Securities Act of 1933, as amended,
this Registration Statement has been signed by the following persons on behalf
of the Registrant and in the capacities and on the dates indicated:
 
   
<TABLE>
<CAPTION>
                SIGNATURE                                        TITLE                            DATE
                ---------                                        -----                            ----
<S>                                         <C>                                              <C>
 
            /s/ KIM K. POLESE               President, Chief Executive Officer (Principal    April 20, 1999
- ------------------------------------------  Executive Officer) and Director
              Kim K. Polese
 
            /s/ FRED M. GERSON              Vice President, Finance and Chief Financial      April 20, 1999
- ------------------------------------------  Officer (Principal Financial and Accounting
              Fred M. Gerson                Officer)
 
         /s/ ARTHUR A. VAN HOFF*            Chief Technology Officer and Director            April 20, 1999
- ------------------------------------------
            Arthur A. van Hoff
 
           /s/ RAYMOND J. LANE*             Director                                         April 20, 1999
- ------------------------------------------
             Raymond J. Lane
 
        /s/ DOUGLAS J. MACKENZIE*           Director                                         April 20, 1999
- ------------------------------------------
           Douglas J. Mackenzie
 
            /s/ ANEEL BHUSRI*               Director                                         April 20, 1999
- ------------------------------------------
               Aneel Bhusri
 
         /s/ STRATTON D. SCLAVOS*           Director                                         April 20, 1999
- ------------------------------------------
           Stratton D. Sclavos
 
          *By: /s/ KIM K. POLESE
  --------------------------------------
              Kim K. Polese
             Attorney-in-Fact
 
         *By: /s/ FRED M. GERSON
  --------------------------------------
              Fred M. Gerson
             Attorney-in-Fact
</TABLE>
    
 
                                      II-5
<PAGE>   99
 
                               INDEX TO EXHIBITS
 
   
<TABLE>
<CAPTION>
    EXHIBIT
      NO.                              DESCRIPTION
    -------                            -----------
    <C>        <S>
      1.1**    Form of Underwriting Agreement.
      3.1**    Amended and Restated Certificate of Incorporation of the
               Registrant.
      3.2**    Certificate of Correction to Amended and Restated
               Certificate of Incorporation.
      3.3**    Form of Third Amended and Restated Certificate of
               Incorporation to be filed upon the closing of the offering
               made pursuant to this Registration Statement.
      3.4**    Bylaws of the Registrant.
      3.5**    Amended and Restated Bylaws of the Registrant to be
               effective upon the closing of the offering made pursuant to
               this Registration Statement.
      4.1      Reference is made to Exhibits 3.1, 3.2, 3.3, 3.4 and 3.5.
      4.2**    Form of Registrant's Common Stock certificate.
      4.3**    Amended and Restated Investors' Rights Agreement dated
               August 25, 1997.
      4.4**    Form of Amendment and Waiver of Registration Rights under
               the Amended and Restated Investors' Rights Agreement.
      4.5**    Warrant to purchase shares of Series A Preferred Stock of
               the Registrant issued to Lighthouse Capital Partners II,
               L.P.
      5.1**    Opinion of Gunderson Dettmer Stough Villeneuve Franklin &
               Hachigian, LLP.
     10.1**    Form of Indemnification Agreement entered into by the
               Registrant with each of its directors and executive
               officers.
     10.2**    1999 Omnibus Equity Incentive Plan and forms of agreements
               thereunder.
     10.3**    Employee Stock Purchase Plan.
     10.4**    1999 Non-Employee Directors Option Plan.
     10.5      Assignment and Assumption of Sublease between Quickturn
               Design Systems, Inc. and ilicon, Inc. dated January 31,
               1999.
     10.6**    Loan and Security Agreement between the Registrant and
               Silicon Valley Bank dated May 27, 1998.
    10.7**+    Original Equipment Manufacturer Agreement between Tivoli
               Systems Subsidiary, Inc. and the Registrant dated March 6,
               1998.
    10.8**+    Amendment No. 1 to Original Equipment Manufacturer Agreement
               between Tivoli Systems, Inc. and the Registrant dated
               February 8, 1999.
    10.9**+    Reseller Agreement between Tivoli Systems Subsidiary, Inc.
               and the Registrant dated August 14, 1997.
    10.10**+   Amendment No. 1 to Reseller Agreement between Tivoli
               Systems, Inc. and the Registrant dated June 1, 1998.
    10.11**    Amendment No. 2 to Reseller Agreement between Tivoli
               Systems, Inc. and the Registrant dated June 30, 1998.
    10.12**    Reseller License Guide to Reseller Agreement between Tivoli
               Systems, Inc. and the Registrant dated November 23, 1998.
     10.13+    Pricing Guide to Reseller Agreement between Tivoli Systems,
               Inc. and the Registrant dated November 23, 1998.
    10.14**    Amendment No. 3 to Reseller Agreement between Tivoli
               Systems, Inc. and the Registrant dated February 9, 1999.
     23.1      Consent of Ernst & Young LLP, independent auditors.
     23.2**    Consent of Counsel. Reference is made to Exhibit 5.1.
</TABLE>
    
<PAGE>   100
 
   
<TABLE>
<CAPTION>
    EXHIBIT
      NO.                              DESCRIPTION
    -------                            -----------
    <C>        <S>
     24.1**    Power of Attorney.
     27.1**    Financial Data Schedule.
     99.1**    Order of the United States District Court for the Northern
               District of California, San Jose Division dated December 28,
               1998.
     99.2      Consent of the Hurwitz Group.
     99.3**    Consent of Blakely, Sokoloff, Taylor & Zafman, LLP.
</TABLE>
    
 
- -------------------------
** Previously filed.
 
+ Confidential treatment requested.

<PAGE>   1
                                                                    EXHIBIT 10.5


                     ASSIGNMENT AND ASSUMPTION OF SUBLEASE

                                440 Clyde Avenue
                           Mountain View, California


     THIS ASSIGNMENT AND ASSUMPTION OF SUBLEASE (this "Assignment") is made and
entered into on January 31, 1999, by and between QUICKTURN DESIGN SYSTEMS, INC.,
a Delaware Corporation ("Quickturn"), and ilicon, INC., a California corporation
("ilicon").

                                   RECITALS:

     A.   ilicon and Quickturn are parties to (1) a Standard Industrial/
Commercial Single-Tenant Lease-Net with First Addendum and Second Addendum dated
March 17, 1993, pursuant to which ilicon, as Lessor, leased to Quickturn, as
Lessee, and Quickturn leased from ilicon, a portion of the real property
commonly known as 440 Clyde Avenue, Mountain View, California, consisting of the
first floor of the two story building and the one story building located at 440
Clyde Avenue, Mountain View, California, and (2) a Standard Industrial/
Commercial Single-Tenant Lease-Net with First Addendum and Second Addendum dated
March 17, 1993, pursuant to which ilicon, as Lessor, leased to Quickturn, as
Lessee, and Quickturn leased from ilicon, a portion of the real property
commonly known as 440 Clyde Avenue, Mountain View, California, consisting of the
second floor of the two story building located at 440 Clyde Avenue, Mountain
View, California. Said Leases are referred to herein as the "440 Clyde Avenue
Leases." The two story building and the one story building at 440 Clyde Avenue,
Mountain View, California are referred to herein as the "440 Clyde Avenue
Premises."

     B.   Quickturn has subleased the 440 Clyde Avenue Premises to Marimba,
Inc., a Delaware corporation ("Marimba") pursuant to a Sublease dated September
26, 1997 between Quickturn, as Sublessor, and Marimba, as Sublessee (the
"Marimba Sublease"). A true and complete copy of the Marimba Sublease and all
amendments thereto is attached hereto as Exhibit "A."

     C.   ilicon and Quickturn are parties to an Agreement Terminating Leases
dated as of January 15, 1999 (the "Termination Agreement") pursuant to which
ilicon and Quickturn have agreed to a mutual termination of the 440 Clyde Avenue
Leases and the Lease of 441 Logue Avenue effective as of 11:59 p.m. on January
31, 1999, subject to the conditions precedent set forth therein. ilicon has


<PAGE>   2
elected to continue the Marimba Sublease in effect as a direct lease between
ilicon and Marimba following the termination of the 440 Clyde Avenue Leases.

     NOW, THEREFORE, for valuable consideration, the receipt and adequacy of
which are hereby acknowledged, the parties hereto agree as follows:

     1.   Assignment and Assumption of Marimba Sublease. Quickturn hereby
assigns to ilicon all of Quickturn's right, title and interest in, to and under
the Marimba Sublease effective as of 11:59 p.m. on January 31, 1999 (the
"Effective Date"), and ilicon hereby accepts such assignment and agrees to
perform all of the covenants, agreements, and obligations of Quickturn, as
Sublessor, under the Marimba Sublease from and after the Effective Date.
Quickturn agrees that ilicon shall collect the installment of rent and other
charges for the month of February 1999 payable by Marimba as the Sublessee under
the Marimba Sublease and all subsequent installments of rent and other charges
payable by Marimba. Quickturn hereby represents and warrants to ilicon that the
Marimba Sublease is in full force and effect and that Quickturn has neither
given nor received any notice of default thereunder. Quickturn shall deliver to
ilicon concurrently with the execution and delivery of this Assignment the
original fully executed copy of the Marimba Sublease.

     2.   Conditions Precedent. This Assignment is subject to the satisfaction,
prior to January 31, 1999, of the conditions precedent set forth in Paragraph 2
of the Termination Agreement. If said conditions precedent are not satisfied
prior to January 31, 1999, this Assignment shall be null and void and of no
force or effect.

     3.   Further Assurances. Each party hereto agrees to execute and deliver to
the other party such further documents or instruments as may be necessary or
appropriate in order to carry out the intentions of the parties as contained in
this Assignment.

     4.   Counterparts. This Assignment may be executed in counterparts, each of
which shall be deemed an original, but all of which together shall constitute
one and the same instrument.


                                       2
<PAGE>   3
     IN WITNESS WHEREOF, the parties hereto have executed this Assignment as of 
the day and year first above written.






                                                 "Quickturn"



                                                 QUICKTURN DESIGN SYSTEMS, INC.,
                                                 a Delaware corporation



                                                 By:  /s/  RAYMOND OSTBY
                                                    ----------------------------

                                                 Its: Vice President 
                                                     ---------------------------




                                                 "ilicon"


                                                 ILICON, INC.,
                                                 a California corporation


                                                 By:  /s/  DAVID FLETCHER
                                                    ----------------------------
                                                      Its Attorney in Fact
<PAGE>   4
                                                                    ATTACHMENT A

                                    SUBLEASE



1.      PARTIES. This Sublease is made and effective this 26th day of September,
        1997 ("Effective Date") by and between Quickturn Design Systems, Inc., a
        Delaware corporation ("Sublessor"), and Marimba, Inc., a Delaware
        corporation ("Sublessee").

2.      PREMISES. Sublessor hereby leases to Sublessee and Sublessee hereby
        subleases from Sublessor for the Term (as defined below in Section 3),
        at the Rent set forth in Section 4 below, and upon all of the conditions
        set forth herein, that certain property situated in the County of Santa
        Clara, State of California, commonly known as 440 Clyde Avenue, Mountain
        View, CA 94040 and described as two (2) joined buildings consisting of
        approximately Thirty Five Thousand Two Hundred Seventy Three (35,273)
        rentable square feet and Twelve Thousand Two Hundred (12,200) rentable
        square feet, respectively, for a total of approximately Forty Seven
        Thousand Four Hundred Seventy Three (47,473) rentable square feet. (See
        attached Exhibit A for further description.)

3.      TERM.

        3.1     TERM. The term of this Sublease shall be for approximately two
                (2) years and six (6) months (the "Term") commencing on or about
                November 1, 1997 ("Commencement Date") and ending on April 30,
                2000, unless sooner terminated pursuant to any provision herein
                ("Termination Date").

        3.2     DELAY IN COMMENCEMENT. If for any reason Sublessor cannot
                deliver possession of the Premises to Sublessee on November 1,
                1997, Sublessor shall not be subject to any liability therefore,
                nor shall such failure affect the validity of this Lease or the
                obligations of Sublessee hereunder or extend the term of this
                Sublease. Notwithstanding the foregoing, Sublessee shall not be
                obligated to pay rent until Sublessor tenders possession of the
                Premises to Sublessee. If Sublessor has not delivered possession
                of the Premises by January 1, 1998, Sublessee may, at its
                option, notify Sublessor in writing on or before January 10,
                1998, that Sublessee intends to cancel this Sublease. In the
                event of such cancellation, the parties shall be discharged from
                all obligations hereunder.

        3.3     EARLY COMMENCEMENT. If Sublessee occupies the Premises prior to
                November 1, 1997, such occupancy shall be subject to all
                provisions of this Sublease, such occupancy shall not advance
                the Termination Date and Sublessee shall pay rent for such
                period at the initial monthly rates set forth below.

4.      RENT; OPERATING EXPENSES AND REAL ESTATE TAXES.

        4.1     RENT FOR PREMISES. The Rent is calculated for the Premises as
                follows:

                11/1/1997 through 1/31/1999     $1.95/sq. foot/month NNN
                02/1/1999 through 4/30/2000     $2.00/sq. foot/month NNN


<PAGE>   5
        Sublessee shall pay to Sublessor as rent for the Premises equal monthly
payments of Ninety Two Thousand Five Hundred Seventy Two and 35/100 Dollars
($92,572.35), in advance, on the first day of each month for months 1 through 15
of the Term and Ninety Four Thousand Nine Hundred Forty Six and 00/100 Dollars
($94,946.00), in advance, on the first day of each month for months 16 through
30 of the Term (collectively, the "Rent"). Sublessee shall pay to Sublessor on
the Effective Date the sum of $92,572.35 as payment for the first month's Rent.
Sublessor shall apply any partial Rent payments made by Sublessee on a pro rata
basis toward the monthly Rent then due. Rent shall be payable in lawful money of
the United States to Sublessor at the address stated herein or to such other
persons or at such other places as Sublessor may designate in writing.

        4.2     OPERATING EXPENSES; REAL ESTATE TAXES. This Sublease is a
                "triple net" or "NNN" sublease and Sublessee shall be
                responsible for paying directly for services such as utilities,
                janitorial costs, all operating expenses and annual increases
                (including without limitation building and common area
                maintenance such as parking, landscaping and lighting), costs of
                insurance, repairs, operations and real property taxes.
                Sublessee shall have the right to verify all operating expenses.

5.      SECURITY DEPOSIT. Sublessee shall deposit with Sublessor on the
        Effective Date an amount equal to two (2) months Rent at the rate of
        Ninety Four Thousand Nine Hundred Forty Six and 00/100 Dollars
        ($94,946.00) per month, for a sum total of One Hundred Eighty Nine Eight
        Hundred Ninety Two and 00/100 Dollars ($189,892.00), as security for
        Sublessee's faithful performance of its obligations hereunder (the
        "Security Deposit"). If Sublessee fails to pay Rent or other charges due
        hereunder, or otherwise defaults with respect to any provision of this
        Sublease, Sublessor may use, apply or retain all or any portion of the
        Security Deposit for the payment of any Rent or other charge in default
        or for the payment of any other sum to which Sublessor may become
        obligated by reason of Sublessee's default, or to compensate Sublessor
        for any loss or damage which Sublessor may suffer thereby. If Sublessor
        so uses or applies all or any portion of the Security Deposit, Sublessee
        shall, within ten (10) days after its receipt of Sublessor's written
        demand, deposit cash with Sublessor in an amount sufficient to restore
        the Security Deposit to the full amount set forth above. Sublessee's
        failure to do so shall be a material breach of this Sublease. Sublessor
        shall not be required to keep the Security Deposit separate from its
        general accounts. If Sublessee performs all of its obligations
        hereunder, following the Termination Date and after Sublessee has
        vacated the Premises, Sublessor shall return the Security Deposit (or
        the portion thereof which has not been applied by Sublessor) to
        Sublessee (or at Sublessor's option, to the last assignee, if any, of
        Sublessee's interest in the Sublease). No trust relationship is created
        herein between Sublessor and Sublessee with respect to the Security
        Deposit. No payment of interest or other incremental charge shall be
        payable to Sublessee for Sublessor's use of the Security Deposit.

6.      USE.

        6.1     USE. The Premises shall be used and occupied by Sublessee only
                for research and development, office administration, storage and
                other legal uses approved by the City of Mountain View.


                                       2


<PAGE>   6
        6.2     COMPLIANCE WITH LAW.

                (a) SUBLESSOR'S WARRANTY RE COMPLIANCE. As of the Commencement
                Date, Sublessor warrants to Sublessee that, to the best of
                Sublessor's knowledge and without independent investigation, the
                Premises, in their existing state, do not violate any applicable
                building code regulation or ordinance; provided, however,
                Sublessor's warranty is given without regard to the use for
                which Sublessee intends to use the Premises. Sublessor shall
                rectify promptly, at its sole cost and expense, any violation of
                such warranty, after written notice from Sublessee.
                Notwithstanding the foregoing, the Premises may not meet all
                requirements of the Americans with Disabilities Act ("ADA") and
                Sublessor makes no warranty nor assumes any liability with
                respect to ADA compliance. It shall be conclusively deemed that
                no violation of Sublessor's warranty existed unless written
                notice to the contrary is received by Sublessor prior to the
                first anniversary of the Commencement Date.

                (b) SUBLESSEE'S COMPLIANCE. Except as provided in Section
                6.2(a), Sublessee shall, at its sole expense, comply promptly
                with all applicable statutes, ordinances, rules, regulations,
                orders, restrictions of record, and requirements in effect
                during the Term regulating Sublessee's use of the Premises.
                Sublessee shall not use or permit the use of the Premises in any
                manner that will tend to (i) create waste or a nuisance; or (ii)
                to disturb other tenants of the Premises, if there are multiple
                tenants in the building containing the Premises.

        6.3     CONDITION OF PREMISES; IMPROVEMENTS.

                (a) "AS IS" CONDITION OF PREMISES. Sublessor shall provide
                Sublessee with sufficient opportunity to conduct its own review
                of all operating systems prior to the Commencement Date.
                Sublessor makes no representation or gives no warranty with
                respect to the condition of such operating systems. Except as
                expressly provided in Section 6.2(a) and this Section 6.3,
                Sublessee hereby accepts (a) the Premises "AS IS" in their
                condition existing as of the Commencement Date, subject to all
                applicable zoning, municipal, county and state laws, ordinances,
                and regulations governing and regulating the use of the
                Premises; (b) this Sublease subject thereto; and (c) all matters
                disclosed thereby and in any exhibits attached to this Sublease.
                Notwithstanding the foregoing, prior to the Commencement Date
                Sublessor shall clean the carpets and floors at the Premises and
                replace defective ceiling tiles and light bulbs. All other
                improvements shall be at Sublessee's sole expense. Sublessee
                acknowledges that neither Sublessor nor Sublessor's agents have
                made any representation or warranty as to the suitability of the
                Premises for the conduct of Sublessee's business.

                (b) IMPROVEMENTS BY SUBLESSEE. Sublessee shall have the right to
                modify the building interiors of the Premises with Sublessor's
                and Master Lessor's prior written consent, which consent shall
                not be unreasonably withheld or delayed, subject to the
                appropriate provisions of the Master Lease. To the best of
                Sublessor's knowledge, there are no permit violations of
                existing building improvements.


                                       3


<PAGE>   7
        6.4     SUBLESSEE'S INDEMNIFICATION RE HAZARDOUS SUBSTANCES. Sublessee
                shall indemnify, defend and hold Sublessor and Master Lessor,
                and each of their agents, employees and lenders, harmless from
                and against any and all losses, costs, claims, damages,
                liabilities and causes of action (including attorney's fees and
                costs and consultants' fees) arising out of or in any way
                connected with any hazardous substance located on the Premises
                immediately subsequent to the Commencement Date or any
                subsequent presence of hazardous substances on or about the
                Premises, including the soils and ground waters thereof, caused
                or permitted by Sublessee. Sublessee's obligations under this
                provision shall survive the expiration or termination of the
                Sublease.

        6.5     SUBLESSOR'S INDEMNIFICATION RE HAZARDOUS SUBSTANCES. Sublessor
                shall indemnify, defend and hold Sublessee and Master Lessor,
                and each of their agents, employees and lenders, harmless from
                and against any and all losses, costs, claims, damages,
                liabilities and causes of action (including attorney's fees and
                costs and consultants' fees) arising out of or in any way
                connected with any hazardous substance brought onto the Premises
                by or for Sublessor in violation of any Applicable Law prior to
                the Commencement Date. Sublessor's obligations under this
                provision shall survive the expiration or termination of the
                Sublease.

7.      MASTER LEASE.

        7.1     MASTER LEASES; CONFLICTS; DEFINITIONS.

                (a) MASTER LEASES. Sublessor is the lessee of the Premises by
                virtue of two leases by and between Sublessor and MV440, Inc.
                ("Master Lessor"). The lease for the first floor of the
                two-story building consisting of approximately 17,637 square
                feet and the single story building consisting of approximately
                12,200 square feet (for a total of 29,837 square feet) is dated
                March 17, 1993, as amended by those certain Addenda No. 1 and
                No. 2 to Master Lease dated March 17, 1993 (collectively the
                "First Floor Master Lease"), a copy of which is attached hereto
                as Exhibit B-1 and incorporated herein by reference. The lease
                for the second floor of the two-story building consisting of
                approximately 17,636 square feet is dated March 17, 1993, as
                amended by those certain Addenda No. 1 and No. 2 to Master Lease
                dated March 17, 1993 (collectively, the "Second Floor Master
                Lease"), a copy of which is attached hereto as Exhibit B-2 and
                incorporated herein by reference. The First Floor Master Lease
                and the Second Floor Master Lease shall be referred to
                collectively herein as the "Master Lease."

                (b) CONFLICTS. This Sublease is and shall be at all times
                subject and subordinate to the Master Lease. The terms,
                conditions and respective obligations of Sublessor and Sublessee
                to each other under this Sublease shall be the terms and
                conditions of the Master Lease except for those provisions of
                the Master Lease which are expressly changed by this Sublease.
                In the event of any conflict between the terms of this Sublease
                and the terms of the Master Lease, as between Sublessor and
                Sublessee the terms of this Sublease shall control over the
                Master Lease. In the event of any conflict between the terms of
                this Sublease and the terms of the Master Lease, as between
                Master Lessor and Sublessor the terms of the Master Lease shall
                control over the Sublease.


                                       4


<PAGE>   8
                (c) DEFINITIONS. The term "Lessor" in the Master Lease shall be
                deemed in this Sublease to refer to the "Sublessor." The term
                "Lessee" in the Master Lease shall be deemed in this Sublease to
                refer to the "Sublessee." Any capitalized terms not defined in
                this Sublease shall have the meaning ascribed to them by the
                Master Lease.

        7.2     SUBLESSEE'S ASSUMPTION OF OBLIGATIONS. During the Term and for
                all periods subsequent with respect to obligations which have
                arisen prior to the Termination Date, Sublessee does hereby
                expressly assume and agree to perform and comply with, for the
                benefit of Sublessor and Master Lessor, each and every
                obligation of Sublessor under the Master Lease ("Sublessee's
                Assumed Obligations"). Sublessee shall hold Sublessor free and
                harmless of and from all liability, judgments, costs, damages,
                claims or demands, including reasonable attorney's fees, arising
                out of Sublessee's failure to comply with or perform Sublessee's
                Assumed Obligations. Notwithstanding the foregoing, Sublessee
                does not assume any obligations for removal of alterations made
                by Sublessor prior to the Commencement Date, if such removal is
                required by Master Lessor at the end of the Lease Term.

        7.3     SUBLESSOR'S COMPLIANCE WITH MASTER LEASE. Sublessor represents
                to Sublessee that as of the Effective Date the Master Lease is
                in full force and effect and that no default exists on the part
                of any party to the Master Lease.

8.      DEFAULT.

        8.1     DEFAULTS BY SUBLESSOR. Master Lessor agrees that unless and
                until Sublessor materially defaults on the Master Lease,
                Sublessor may receive, collect and enjoy the rents accruing
                under this Sublease. However, if Sublessor defaults in the
                performance of its obligations to Master Lessor, then Master
                Lessor may, at its option, receive and collect, directly from
                Sublessee, all rent owing and to be owed under this Sublease;
                provided, however, Master Lessor agrees that it shall only be
                entitled to fifty percent (50%) of the Excess Rent. Master
                Lessor shall not, by reason of this assignment of the Sublease
                nor by reason of the collection of the rents from the Sublessee,
                be deemed liable to Sublessee for any failure of the Sublessor
                to perform and comply with its obligations hereunder.

        8.2     SUBLESSEE'S PAYMENT TO MASTER LESSOR. Sublessor hereby
                irrevocably authorizes and directs Sublessee, upon receipt of
                any written notice from the Master Lessor stating that a default
                exists in the performance of Sublessor under the Master Lease,
                to pay to Master Lessor the rents due and to become due under
                the Sublease. Sublessor agrees that Sublessee shall have the
                right to rely upon any such statement and request from Master
                Lessor, and that Sublessee shall pay such rents to Master Lessor
                without any obligation or right to inquire as to whether such
                default exists and notwithstanding any notice from or claim from
                Sublessor to the contrary. Sublessor agrees that it shall have
                no right or claim against Sublessee for any such rents so paid
                by Sublessee.

        8.3     NO MODIFICATIONS WITHOUT MASTER LESSOR'S CONSENT. No changes or
                modifications shall be made to this Sublease without the prior
                written consent of Master Lessor.


                                       5


<PAGE>   9
        8.4     AGREEMENT NOT TO EXERCISE OPTION TO EXTEND. Sublessor agrees not
                to exercise its option to extend the Lease. Sublessee agrees
                that it has no right to exercise the option to extend the Lease.

9.      CONSENT OF MASTER LESSOR TO SUBLEASE.

        9.1     CONSENT; SUBLESSOR'S OBLIGATION TO PAY COSTS. Sublessor and
                Sublessee agree to present this executed Sublease to Master
                Lessor for its written approval. Master Lessor's consent to this
                Sublease will not release Sublessor from its obligation to pay
                rent and perform and comply with all of its obligations under
                the Master Lease. Sublessor agrees that it shall be responsible
                to pay any and all real estate commissions associated with this
                Sublease as a cost of sublease. Sublessor also agrees as a cost
                of sublease to pay the reasonable costs and expenses of Master
                Lessor for its fees and costs (e.g., attorney's fees) associated
                with Master Lessor's review and approval of this Sublease.

        9.2     NO WAIVER. The acceptance of rent by Master Lessor from
                Sublessee or any one else liable under the Master Lease shall
                not be deemed a waiver by Master Lessor of any provisions of the
                Master Lease. The consent to this Sublease shall not constitute
                a consent to any subsequent subletting or assignment. In the
                event of any default of Sublessor under the Master Lease, Master
                Lessor may proceed directly against Sublessor or any one else
                liable under the Master Lease or this Sublease without first
                exhausting Master Lessor's remedies against any other person or
                entity liable thereon to Master Lessor.

        9.3     SUBLESSOR'S CONSENT TO ADDITIONAL SUBLETTING. Sublessor will not
                unreasonably withhold consent to any assignment or sub-sublease
                by Sublessee, subject to consent by Master Lessor.

        9.4     ATTORNMENT. In the event that Sublessor defaults in its
                obligations under the Master Lease, then Master Lessor, at its
                option and without being obligated to do so, may require
                Sublessee to attorn to Master Lessor, in which case Sublessee
                shall attorn to Master Lessor and Sublessee shall perform all of
                the terms and conditions of this Sublease directly to Master
                Lessor, as if Sublessee and Master Lessor were Lessor and
                Lessee. In any event, Master Lessor shall allow Sublessee to
                cure any default by Sublessor within the applicable cure period
                after due notice to Sublessee of the default. In such event,
                Master Lessor shall undertake the obligations of Sublessor under
                this Sublease from the time of the exercise of said option until
                the Termination Date. Notwithstanding the foregoing, Master
                Lessor shall not be liable for any prepaid rents nor any
                security deposit paid by Sublessee, nor shall it be liable for
                any other defaults of the Sublessor under the Sublease.
                Sublessor and Sublessee acknowledge and agree that Rent due and
                payable to Master Lessor in the case of such Sublessor default,
                and Sublessee's attornment, shall be the Rent set forth in this
                Sublease, and not the Rent set forth in the Master Lease.

        9.5     MASTER LEASE IN GOOD STANDING. Master Lessor acknowledges that,
                to the best of Master Lessor's knowledge, no default presently
                exists under the Master Lease of 


                                       6


<PAGE>   10
                obligations to be performed by Sublessor and that the Master
                Lease is in full force and effect.

        9.6     COPIES OF DEFAULT NOTICES TO SUBLESSEE. In the event that
                Sublessor defaults under its obligations to be performed under
                the Master Lease, Master Lessor agrees to deliver to Sublessee a
                copy of any such notice of default. Sublessee shall have the
                right to cure any default of Sublessor described in any notice
                of default within ten days after service of such notice of
                default on Sublessee. If such default is cured by Sublessee then
                Sublessee shall have the right of reimbursement and offset from
                and against Sublessor.

        9.7     CAPITAL IMPROVEMENTS. Master Lessor agrees that any ADA upgrades
                or roof or HVAC replacement or extensive repairs to the Premises
                shall made subject to the Section 6, Expenses, Subsection C,
                Capital Leases and Capital Improvements, of the Second Addendum
                to Lease.

               IN WITNESS WHEREOF, the authorized representatives of each of the
parties duly execute this Sublease in the County of Santa Clara, California, as
of the date first written above.



SUBLESSOR:  QUICKTURN DESIGN SYSTEMS, INC.


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

Title: 
      ----------------------------

SUBLESSEE:  MARIMBA, INC.


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

Title: 
      ----------------------------


                                       7


<PAGE>   11
                      CONSENT TO SUBLEASE BY MASTER LESSOR



        The undersigned ("Master Lessor"), as owner of the real property on
which the Premises are located and Lessor under the Master Lease, subject to the
terms and conditions contained in this Consent, hereby consents to the foregoing
Sublease between Quickturn Design Systems, Inc., a Delaware corporation
("Sublessor"), and Marimba, Inc., a Delaware corporation ("Sublessee"), but
without thereby releasing Sublessor as Lessee under the Master Lease from any
liability or obligation to Master Lessor under the Master Lease, and without
waiving the provisions of the Master Lease which require Master Lessor's prior
written consent to any subsequent assignment or subletting of the Premises or
any portion thereof by Sublessor.

        Master Lessor expressly confirms and approves Paragraphs 9.5, 9.6, and
9.7 of the Sublease.

        DATED: September 30, 1997.

                                               MV 440, INC.,
                                               a California corporation


                                               By: 
                                                  ------------------------------
                                                   Its: Attorney-In-Fact



<PAGE>   12
                                    EXHIBIT A


   
[Exhibit A is a map of the property located at 440 Clyde Avenue, Mountain View,
California, 94043, which graphically depicts the floorplan of the Registrant's
leased space. The floorplan consists of fifty one rooms. In the middle of the 
plan is a shaded area titled "Training Room." Along the right side of the plan 
are two shaded areas, one titled "No Access to Sub-Sublessee," and the other is 
a room titled "Lunchroom." Above the area titled "No Access to Sub-Sublessee" 
is a caption reading "Emergency Exit" followed by an arrow pointing inside the 
building. Just above and to the right of the reference to the "Emergency Exit" 
is a caption reading "Main Building Lobby." Along the left side of the floor 
plan is a caption reading "To Clyde Avenue" followed by an arrow pointing up 
the top of the page.]
    



<PAGE>   13
                                                      ATTACHMENT B (Exhibit B-1)

                   AMERICAN INDUSTRIAL REAL ESTATE ASSOCIATION



             STANDARD INDUSTRIAL/COMMERCIAL SINGLE-TENANT LEASE--NET
                (DO NOT USE THIS FORM FOR MULTI-TENANT PROPERTY)



1.      BASIC PROVISIONS ("BASIC PROVISIONS")

        1.1 PARTIES: This Lease ("LEASE"), dated for reference purposes only,
March 17, 1993, is made by and between MV 440, INC., a California corporation
("LESSOR") and QUICKTURN SYSTEMS. INC., a California corporation ("LESSEE"),
(collectively the "PARTIES," or individually a "PARTY").

        1.2 PREMISES: That certain real property, including all improvements
therein or to be provided by Lessor under the terms of this Lease, and commonly
known by the street address of 440 Clyde Avenue, Mountain View, located in the
County of Santa Clara, State of California and generally described as (describe
briefly the nature of the property) that improved property referred to as 440
Clyde Avenue, also described as Santa Clara APN# 160-57-009, consisting of
approximately 29,837 square feet of office/R&D space located in two buildings,
First Floor (17,637 sq. ft.) of the two-story building and one 12,200 sq. ft.,
single story building ("PREMISES"). See Exhibit "A" attached hereto. (See
Paragraph 2 for further provisions.)

        1.3 TERM: seven (7) years and zero (0) months ("ORIGINAL TERM")
commencing May 1, 1993 ("COMMENCEMENT DATE"), and ending April 30, 2000
("EXPIRATION DATE"). (See Paragraph 3 for further provisions.)

        1.4 EARLY POSSESSION: March 22, 1993 ("EARLY POSSESSION DATE") (See
Paragraphs 3.2 and 3.3 for further provisions.)

        1.5 BASE RENT: $21,436.50 per month ("BASE RENT"), payable on the first
(1st) day of each month commencing May 1, 1993. (See Paragraph 4 for further
provisions.)

[ ]     If this box is checked, there are provisions in this Lease for the Base 
Rent to be adjusted.

        1.6 BASE RENT PAID UPON EXECUTION: $21,436.50 as Base Rent for the
period May 1, 1993 through May 31, 1993

        1.7 SECURITY DEPOSIT: $50,000.00 ("SECURITY DEPOSIT"). (See Paragraph 5
for further provisions.)

        1.8 PERMITTED USE: Office, administration, research and development and
all other uses legally permitted by the City of Mountain View. (See Paragraph 6
for further provisions.)

        1.9 INSURING PARTY: Lessor is the "INSURING PARTY" unless otherwise
stated herein. (See Paragraph 8 for further provisions.)

        1.10 REAL ESTATE BROKERS: The following real estate brokers
(collectively, the "BROKERS") and brokerage relationships exist in this
transaction and are consented to by the Parties (check applicable boxes):
Cornish & Carey Commercial represents

[X]   Lessor exclusively ("LESSOR'S BROKER");   [ ] both Lessor and Lessee, and
      Wayne Mascia Associates represents

[X]   Lessee exclusively ("LESSEE'S BROKER");   [ ] both Lessee and Lessor. (See
                                                    Paragraph 15 for further 
                                                    provisions.)


        1.11 GUARANTOR. The obligations of the Lessee under this Lease are to be
guaranteed by N/A ("GUARANTOR"). (See Paragraph 37 for further provisions.)

        1.12 ADDENDA. Attached hereto is an Addendum or Addenda consisting of
Paragraphs 49 through 50 and a Second Addendum to Lease all of which constitute
a part of this Lease.

2.      PREMISES.

        2.1 LETTING. Lessor hereby leases to Lessee, and Lessee hereby leases
from Lessor, the Premises, for the term, at the rental, and upon all of the
terms, covenants and conditions set forth in this Lease. Unless otherwise
provided herein, any statement of square footage set forth in this Lease, or
that may have been used in calculating rental, is an approximation which Lessor
and Lessee agree is reasonable and the rental based thereon is not subject to
revision whether or not the actual square footage is more or less.

        2.2 CONDITION. Lessor shall deliver the Premises to Lessee clean and
free of debris on the Commencement Date and warrants to Lessee that the existing
plumbing, fire sprinkler system, lighting, air conditioning, heating, roof and
loading doors, if any, in the Premises, other than those constructed by Lessee,
shall be in good operating condition on the Commencement Date. If a
non-compliance with said warranty exists as of the Commencement Date, Lessor
shall, except as otherwise provided in this Lease, promptly after receipt of
written notice from Lessee setting forth with specificity the nature and extent
of such non-compliance, rectify same at Lessor's expense. If Lessee does not
give Lessor written notice of a non-compliance with this warranty within thirty
(30) days after the Commencement Date, correction of that non-compliance shall
be the obligation of Lessee at Lessee's sole cost and expense.

        2.3 COMPLIANCE WITH COVENANTS, RESTRICTIONS AND BUILDING CODE. Lessor
warrants to Lessee that the improvements on the Premises comply with all
applicable covenants or restrictions of record and applicable building codes,
regulations and ordinances in effect on the Commencement Date. Said warranty
does not apply to the use to which Lessee will put the Premises or to any
Alterations or Utility Installations (as defined in Paragraph 7.3 (a)) made or
to be made by Lessee. If the Premises do not comply with said warranty, Lessor
shall, except as otherwise provided in this Lease, promptly after receipt of
written notice from Lessee setting forth with specificity the nature and extent
of such non-compliance, rectify the same at Lessor's expense. If Lessee does not
give Lessor written notice of a non-compliance with this warranty within six (6)
months following the Commencement Date, correction of that non-compliance shall
be the obligation of Lessee at Lessee's sole cost and expense.

        2.4 ACCEPTANCE OF PREMISES. Lessee hereby acknowledges: (a) that it has
been advised by the Brokers to satisfy itself with respect to the condition of
the Premises (including but not limited to the electrical and fire sprinkler
systems, security, environmental aspects, compliance with Applicable Law, as
defined in Paragraph 6.3) and the present and future suitability of the Premises
for Lessee's intended use, (b) that Lessee has made such investigation as it
deems necessary with reference to such matters and assumes all responsibility
therefor as the same relate to Lessee's occupancy of the Premises and/or the
term of this Lease, and (c) that neither Lessor, nor any of Lessor's agents, has
made any oral or written representations or warranties with respect to the said
matters other than as set forth in this Lease.

        2.5 LESSEE PRIOR OWNER/OCCUPANT. The warranties made by Lessor in this
Paragraph 2 shall be of no force or effect if immediately prior to the date set
forth in Paragraph 1.1 Lessee was the owner or occupant of the Premises. In such
event, Lessee shall, at Lessee's sole cost and expense, correct any
non-compliance of the Premises with said warranties.

3.      TERM.

        3.1 TERM. The Commencement Date, Expiration Date and Original Term of
this Lease are as specified in Paragraph 1.3.

        3.2 EARLY POSSESSION. If Lessee totally or partially occupies the
Premises prior to the Commencement Date, the obligation to pay Base Rent shall
be abated for the period of such early possession. All other terms of this
Lease, however, (including but not limited to the obligations to pay Real
Property Taxes and insurance premiums and to maintain the Premises) shall be in
effect during such period. Any such early possession shall not affect nor
advance the Expiration Date of the Original Term.

        3.3 DELAY IN POSSESSION. If for any reason Lessor cannot deliver
possession of the Premises to Lessee as agreed herein by the Early Possession
Date, if one is specified in Paragraph 1.4, or, if no Early Possession Date is
specified, by the Commencement Date, Lessor shall not be subject to any
liability therefor, nor shall such failure affect the validity of this Lease, or
the obligations of Lessee hereunder, or extend the term hereof, but in such
case, Lessee shall not, except as otherwise provided herein, be obligated to pay
rent or perform any other obligation of Lessee under the terms of this Lease
until Lessor delivers possession of the Premises to Lessee. If possession of the
Premises is not delivered to Lessee within sixty (60) days after the
Commencement Date, Lessee may, at its option, by notice in writing to Lessor
within ten (10) days thereafter, cancel this Lease, in which event the Parties
shall be discharged from all obligations hereunder; provided, however, that if
such written notice by Lessee is not received by Lessor within said ten (10) day
period, Lessee's right to cancel this Lease shall terminate and be of no further
force or effect. Except as may be otherwise provided, and regardless of when the
term actually commences, if possession is not tendered to Lessee when required
by this Lease and Lessee does 


<PAGE>   14
not terminate this Lease, as aforesaid, the period free of the obligation to pay
Base Rent, if any, that Lessee would otherwise have enjoyed shall run from the
date of delivery of possession and continue for a period equal to what Lessee
would otherwise have enjoyed under the terms hereof, but minus any days of delay
caused by the acts, changes or omissions of Lessee.

4.      RENT.

        4.1 BASE RENT. Lessee shall cause payment of Base Rent and other rent or
charges, as the same may be adjusted from time to time, to be received by Lessor
in lawful money of the United States, without offset or deduction, on or before
the day on which it is due under the terms of this Lease. Base Rent and all
other rent and charges for any period during the term hereof which is for less
than one (1) full calendar month shall be prorated based upon the actual number
of days of the calendar month involved. Payment of Base Rent and other charges
shall be made to Lessor at its address stated herein or to such other persons or
at such other addresses as Lessor may from time to time designate in writing to
Lessee.

5.      SECURITY DEPOSIT. Lessee shall deposit with Lessor upon execution hereof
the Security Deposit set forth in Paragraph 1.7 as security for Lessee's
faithful performance of Lessee's obligations under this Lease. If Lessee fails
to pay Base Rent or other rent or charges due hereunder, or otherwise Defaults
under this Lease (as defined in Paragraph 13.1), Lessor may use, apply or retain
all or any portion of said Security Deposit for the payment of any amount due
Lessor or to reimburse or compensate Lessor for any liability, cost, expense,
loss or damage (including attorneys' fees) which Lessor may suffer or incur by
reason thereof. If Lessor uses or applies all or any portion of said Security
Deposit, Lessee shall within ten (10) days after written request therefor
deposit moneys with Lessor sufficient to restore said Security Deposit to the
full amount required by this Lease. Any time the Base Rent increases during the
term of this Lease, Lessee shall, upon written request from Lessor, deposit
additional moneys with Lessor sufficient to maintain the same ratio between the
Security Deposit and the Base Rent as those amounts are specified in the Basic
Provisions. Lessor shall not be required to keep all or any part of the Security
Deposit separate from its general accounts. Lessor shall, at the expiration or
earlier termination of the term hereof and after Lessee has vacated the
Premises, return to Lessee (or, at Lessor's option, to the last assignee, if
any, of Lessee's interest herein), that portion of the Security Deposit not used
or applied by Lessor. Unless otherwise expressly agreed in writing by Lessor, no
part of the Security Deposit shall be considered to be held in trust, to bear
interest or other increment for its use, or to be prepayment for any moneys to
be paid by Lessee under this Lease.

6.      USE.

        6.1 USE. Lessee shall use and occupy the Premises only for the purposes
set forth in Paragraph 1.8, or any other use which is comparable thereto, and
for no other purpose. Lessee shall not use or permit the use of the Premises in
a manner that creates waste or a nuisance, or that unreasonably disturbs owners
and/or occupants of, or causes damage to, neighboring premises or properties.

        6.2 HAZARDOUS SUBSTANCES.

               (a) REPORTABLE USES REQUIRE CONSENT. The term "HAZARDOUS
SUBSTANCE" as used in this Lease shall mean any product, substance, chemical,
material or waste whose presence, nature, quantity and/or intensity of
existence, use, manufacture, disposal, transportation, spill, release or effect,
either by itself or in combination with other materials expected to be on the
Premises, is either: (i) potentially injurious to the public health, safety or
welfare, the environment or the Premises, (ii) regulated or monitored by any
governmental authority, or (iii) a basis for liability of Lessor to any
governmental agency or third party under any applicable statute or common law
theory. Hazardous Substance shall include, but not be limited to, hydrocarbons,
petroleum, gasoline, crude oil or any products, by-products or fractions
thereof. Lessee shall not engage in any activity in, on or about the Premises
which constitutes a Reportable Use (as hereinafter defined) of Hazardous
Substances without the express prior written consent of Lessor and compliance in
a timely manner (at Lessee's sole cost and expense) with all Applicable Law (as
defined in Paragraph 6.3). "REPORTABLE USE" shall mean (i) the installation or
use of any above or below ground storage tank, (ii) the generation, possession,
storage, use, transportation, or disposal of a Hazardous Substance that requires
a permit from, or with respect to which a report, notice, registration or
business plan is required to be filed with, any governmental authority.
Reportable Use shall also include Lessee's being responsible for the presence
in, on or about the Premises of a Hazardous Substance with respect to which any
Applicable Law requires that a notice be given to persons entering or occupying
the Premises or neighboring properties. Notwithstanding the foregoing, Lessee
may, without Lessor's prior consent, but in compliance with all Applicable Law,
use any ordinary and customary materials reasonably required to be used by
Lessee in the normal course of Lessee's business permitted on the Premises, so
long as such use is not a Reportable Use and does not expose the Premises or
neighboring properties to any meaningful risk of contamination or damage or
expose Lessor to any liability therefor. In addition, Lessor may (but without
any obligation to do so) condition its consent to the use or presence of any
Hazardous Substance, activity or storage tank by Lessee upon Lessee's giving
Lessor such additional assurances as Lessor, in its reasonable discretion, deems
necessary to protect itself, the public, the Premises and the environment
against damage, contamination or injury and/or liability therefrom or therefor,
including, but not limited to, the installation (and removal on or before Lease
expiration or earlier termination) of reasonably necessary protective
modifications to the Premises (such as concrete encasements) and/or the deposit
of an additional Security Deposit under Paragraph 5 hereof.

               (b) DUTY TO INFORM LESSOR. If Lessee knows, or has reasonable
cause to believe, that a Hazardous Substance, or a condition involving or
resulting from same, has come to be located in, on, under or about the Premises,
other than as previously consented to by Lessor, Lessee shall immediately give
written notice of such fact to Lessor. Lessee shall also immediately give Lessor
a copy of any statement, report, notice, registration, application, permit,
business plan, license, claim, action or proceeding given to, or received from,
any governmental authority or private party, or persons entering or occupying
the Premises, concerning the presence, spill, release, discharge of, or exposure
to, any Hazardous Substance or contamination in, on, or about the Premises
including but not limited to all such documents as may be involved in any
Reportable Uses involving the Premises.

               (c) INDEMNIFICATION. Lessee shall indemnify, protect, defend and
hold Lessor, its agents, employees, lenders and ground lessor, if any, and the
Premises, harmless from and against any and all loss of rents and/or damages,
liabilities, judgments, costs, claims, liens, expenses, penalties, permits and
attorney's and consultant's fees arising out of or involving any Hazardous
Substance or storage tank brought onto the Premises by or for Lessee or under
Lessee's control in violation of any Applicable Law. Lessee's obligations under
this Paragraph 6 shall include, but not be limited to, the effects of any
contamination or injury to person, property or the environment created or
suffered by Lessee, and the cost of investigation (including consultant's and
attorney's fees and testing), removal, remediation, restoration and/or abatement
thereof, or of any contamination therein involved, and shall survive the
expiration or earlier termination of this Lease. No termination, cancellation or
release agreement entered into by Lessor and Lessee shall release Lessee from
its obligations under this Lease with respect to Hazardous Substances or storage
tanks, unless specifically so agreed by Lessor in writing at the time of such
agreement.

        6.3 LESSEE'S COMPLIANCE WITH LAW. Except as otherwise provided in this
Lease, Lessee, shall, at Lessee's sole cost and expense, fully, diligently and
in a timely manner, comply with all "APPLICABLE LAW," which term is used in this
Lease to include all laws, rules, regulations, ordinances, directives,
covenants, easements and restrictions of record, permits, the requirements of
any applicable fire insurance underwriter or rating bureau, and the reasonable
recommendations of Lessor's engineers and/or consultants, relating in any manner
to the Premises (including but not limited to matters pertaining to (i)
industrial hygiene, (ii) environmental conditions on, in, under or about the
Premises, including soil and groundwater conditions, and (iii) the use,
generation, manufacture, production, installation, maintenance, removal,
transportation, storage, spill or release of any Hazardous Substance or storage
tank), now in effect or which may hereafter come into effect, and whether or not
reflecting a change in policy from any previously existing policy. Lessee shall,
within five (5) days after receipt of Lessor's written request, provide Lessor
with copies of all documents and information, including, but not limited to,
permits, registrations, manifests, applications, reports and certificates,
evidencing Lessee's compliance with any Applicable Law specified by Lessor, and
shall immediately upon receipt, notify Lessor in writing (with copies of any
documents involved) of any actual claim, notice, citation, warning, complaint or
report pertaining to or involving failure by Lessee or the Premises to comply
with any Applicable Law.

        6.4 INSPECTION; COMPLIANCE. Lessor and Lessor's Lender(s) (as defined in
Paragraph 8.3(a)) shall have the right to enter the Premises at any time, in the
case of an emergency, and otherwise at reasonable times, for the purpose of
inspecting the condition of the Premises and for verifying compliance by Lessee
with this Lease and all Applicable Laws (as defined in Paragraph 6.3), and to
employ experts and/or consultants in connection therewith and/or to advise
Lessor with respect to Lessee's activities including but not limited to the
installation, operation, use, monitoring, maintenance, or removal of any
Hazardous Substance or storage tank on or from the Premises. The costs and
expenses of any such inspections shall be paid by the party requesting same,
unless a Default or Breach of this Lease, violation of Applicable Law, or a
contamination, caused or materially contributed to by Lessee is found to exist
or be imminent, or unless the inspection is requested or ordered by a
governmental authority as the result of any such existing or imminent violation
or contamination. In any such case, Lessee shall upon request reimburse Lessor
or Lessor's Lender, as the case may be, for the costs and expenses of such
inspections.

7.      MAINTENANCE; REPAIRS; UTILITY INSTALLATIONS; TRADE FIXTURES AND
        ALTERATIONS.

        7.1 LESSEE'S OBLIGATIONS.

               (a) Subject to the provisions of Paragraph 2.2 (Lessor's warranty
as to condition), 2.3 (Lessor's warranty as to compliance with covenants, etc),
7.2 (Lessor's obligations to repair), 9 (damage and destruction), and 14
(condemnation), Lessee shall, at Lessee's sole cost and expense and at all
times, keep the Premises and every part thereof in good order, condition and
repair, structural and non-structural (whether or not such portion of the
Premises requiring repair, or the means of repairing the same, are reasonably or
readily accessible to Lessee, and whether or not the need for such repairs
occurs as a result of Lessee's use, any prior use, the elements or the age of
such portion of the Premises), including, without limiting the generality of the
foregoing, all equipment or facilities serving the Premises, such as plumbing,
heating, air conditioning, ventilating, electrical, lighting facilities,
boilers, fired or unfired pressure vessels, fire sprinkler and/or standpipe and
hose or other automatic fire extinguishing system, including fire alarm and/or
smoke detection systems and equipment, fire hydrants, fixtures, walls (interior
and exterior), foundations, ceilings, roofs, floors, windows, 


                                     PAGE 2
<PAGE>   15
doors, plate glass, skylights, landscaping, driveways, parking lots, fences,
retaining walls, signs, sidewalks and parkways located in, on, about, or
adjacent to the Premises. Lessee shall not cause or permit any Hazardous
Substance to be spilled or released in, on, under or about the Premises
(including through the plumbing or sanitary sewer system) and shall promptly, at
Lessee's expense, take all investigatory and/or remedial action reasonably
recommended, whether or not formally ordered or required, for the cleanup of any
contamination of, and for the maintenance, security and/or monitoring of, the
Premises, the elements surrounding same, or neighboring properties, that was
caused or materially contributed to by Lessee, or pertaining to or involving any
Hazardous Substance and/or storage tank brought onto the Premises by or for
Lessee or under its control. Lessee, in keeping the Premises in good order,
condition and repair, shall exercise and perform good maintenance practices.
Lessee's obligations shall include restorations when necessary to keep the
Premises and all improvements thereon or a part thereof in good order, condition
and state of repair. If Lessee occupies the Premises for more than seven (7)
years, Lessor may require Lessee to repaint the exterior of the buildings on the
Premises as reasonably required, but not more frequently than once every seven
(7) years.

               (b) Lessee shall, at Lessee's sole cost and expense, procure and
maintain contracts, with copies to Lessor, in customary form and substance for,
and with contractors specializing and experienced in, the inspection,
maintenance and service of the following equipment and improvements, if any,
located on the Premises: (i) heating, air conditioning and ventilation
equipment, (ii) boiler, fired or unfired pressure vessels, (iii) fire sprinkler
and/or standpipe and hose or other automatic fire extinguishing systems,
including fire alarm and/or smoke detection, (iv) landscaping and irrigation
systems, (v) roof covering and drain maintenance and (vi) asphalt and parking
lot maintenance.

        7.2 LESSOR'S OBLIGATIONS. Except for the warranties and agreements of
Lessor contained in Paragraphs 2.2 (relating to condition of the Premises) 2.3
(relating to compliance with covenants, restrictions and building code), 9
(relating to destruction of the Premises) and 14 (relating to condemnation of
the Premises), it is intended by the Parties hereto that Lessor have no
obligation, in any manner whatsoever, to repair and maintain the Premises, the
improvements located thereon, or the equipment therein, whether structural or
non structural, all of which obligations are intended to be that of the Lessee
under Paragraph 7.1 hereof. It is the intention of the Parties that the terms of
this Lease govern the respective obligations of the Parties as to maintenance
and repair of the Premises. Lessee and Lessor expressly waive the benefit of any
statute now or hereafter in effect to the extent it is inconsistent with the
terms of this Lease with respect to, or which affords Lessee the right to make
repairs at the expense of Lessor or to terminate this Lease by reason of, any
needed repairs.

        7.3 UTILITY INSTALLATIONS; TRADE FIXTURES; ALTERATIONS.

               (a) DEFINITIONS; CONSENT REQUIRED. The term "UTILITY
INSTALLATIONS" is used in this Lease to refer to all carpeting, window
coverings, air lines, power panels, electrical distribution, security, fire
protection systems, communication systems, lighting fixtures, heating,
ventilating, and air conditioning equipment, plumbing, and fencing in, on or
about the Premises. The term "TRADE FIXTURES" shall mean Lessee's machinery and
equipment that can be removed without doing material damage to the Premises. The
term "ALTERATIONS" shall mean any modification of the improvements on the
Premises from that which are provided by Lessor under the terms of this Lease,
other than Utility Installations or Trade Fixtures, whether by addition or
deletion. "LESSEE OWNED ALTERATIONS AND/OR UTILITY INSTALLATIONS" are defined as
Alterations and/or Utility Installations made by Lessee that are not yet owned
by Lessor as defined in Paragraph 7.4(a). Lessee shall not make any Alterations
or Utility Installations in, on, under or about the Premises without Lessor's
prior written consent. Lessee may, however, make non-structural Utility
Installations to the interior of the Premises (excluding the roof), as long as
they are not visible from the outside, do not involve puncturing, relocating or
removing the roof or any existing walls, and the cumulative cost thereof during
the term of this Lease as extended does not exceed $25,000.

               (b) CONSENT. Any Alterations or Utility Installations that Lessee
shall desire to make and which require the consent of the Lessor shall be
presented to Lessor in written form with proposed detailed plans. All consents
given by Lessor, whether by virtue of Paragraph 7.3(a) or by subsequent specific
consent, shall be deemed conditioned upon: (i) Lessee's acquiring all applicable
permits required by governmental authorities, (ii) the furnishing of copies of
such permits together with a copy of the plans and specifications for the
Alteration or Utility Installation to Lessor prior to commencement of the work
thereon, and (iii) the compliance by Lessee with all conditions of said permits
in a prompt and expeditious manner. Any Alterations or Utility Installations by
Lessee during the term of this Lease shall be done in a good and workmanlike
manner, with good and sufficient materials, and in compliance with all
Applicable Law. Lessee shall promptly upon completion thereof furnish Lessor
with as-built plans and specifications therefor. Lessor may (but without
obligation to do so) condition its consent to any requested Alteration or
Utility Installation that costs $10,000 or more upon Lessee's providing Lessor
with a lien and completion bond in an amount equal to one and one-quarter times
the estimated cost of such Alteration or Utility Installation and/or upon
Lessee's posting an additional Security Deposit with Lessor under Paragraph 36
hereof.

               (c) INDEMNIFICATION. Lessee shall pay, when due, all claims for
labor or materials furnished or alleged to have been furnished to or for Lessee
at or for use on the Premises, which claims are or may be secured by any
mechanics' or materialmen's lien against the Premises or any interest therein.
Lessee shall give Lessor not less than ten (10) days' notice prior to the
commencement of any work in, on or about the Premises, and Lessor shall have the
right to post notices of non-responsibility in or on the Premises as provided by
law. If Lessee shall, in good faith, content the validity of any such lien,
claim or demand, then Lessee shall, at its sole expense defend and protect
itself, Lessor and the Premises against the same and shall pay and satisfy any
such adverse judgment that may be rendered thereon before the enforcement
thereof against the Lessor or the Premises. If Lessor shall require, Lessee
shall furnish to Lessor a surety bond satisfactory to Lessor in an amount equal
to one and one quarter times the amount of such contested lien claim or demand
indemnifying Lessor against liability for the same, as required by law for the
holding of the Premises free from the effect of such lien or claim. In addition,
Lessor may require Lessee to pay Lessor's reasonable attorney's fees and costs
in participating in such action if Lessor shall decide it is to its best
interest to do so.

        7.4 OWNERSHIP; REMOVAL; SURRENDER; AND RESTORATION.

               (a) OWNERSHIP. Subject to Lessor's right to require their removal
or become the owner thereof as hereinafter provided in this Paragraph 7.4, all
Alterations and Utility Additions made to the Premises by Lessee shall be the
property of and owned by Lessee, but considered a part of the Premises. Lessor
may, at any time and at its option, elect in writing to Lessee to be the owner
of all or any specified part of the Lessee Owned Alterations, and Utility
Installations. Unless otherwise instructed per subparagraph 7.4(b) hereof, all
Lessee Owned Alterations and Utility Installations shall, at the expiration or
earlier termination of this Lease, become the property of Lessor and remain upon
and be surrendered by Lessee with the Premises.

               (b) REMOVAL. Unless otherwise agreed in writing, Lessor may
require that any or all Lessee Owned Alterations or Utility Installations be
removed by the expiration of this Lease, notwithstanding their installation may
have been consented to by Lessor. Lessor may require the removal of all or any
part of any Lessee Owned Alterations or Utility Installations made without the
required consent of Lessor only if Lessee has requested Lessor's decision on
such removal in writing.

               (c) SURRENDER/RESTORATION. Lessee shall surrender the Premises by
the end of the last day of the Lease term or any earlier termination date, with
all of the improvements, parts and surfaces thereof clean and free of debris and
in good operating order, condition and state of repair, ordinary wear and tear
excepted. "ORDINARY WEAR AND TEAR" shall not include any damage or deterioration
that would have been prevented by good maintenance practice or by Lessee
performing all of its obligations under this Lease. Except as otherwise agreed
or specified in writing by Lessor, the Premises, as surrendered, shall include
the Utility Installations. The obligation of Lessee shall include the repair of
any damage occasioned by the installation, maintenance or removal of Lessee's
Trade Fixtures, furnishings, equipment, and Alterations and/or Utility
Installations, as well as the removal of any storage tank installed by or for
Lessee, and the removal, replacement, or remediation of any soil, material or
ground water contaminated by Lessee, all as may then be required by Applicable
Law and/or good practice. Lessee's Trade Fixtures shall remain the property of
Lessee and shall be removed by Lessee subject to its obligation to repair and
restore the Premises per this Lease.

8.      INSURANCE; INDEMNITY.

        8.1 PAYMENT FOR INSURANCE. Regardless of whether the Lessor or Lessee is
the Insuring Party, Lessee shall pay for all insurance required under this
Paragraph 8 except to the extent of the cost attributable to liability insurance
carried by Lessor in excess of $1,000,000 per occurrence. Premiums for policy
periods commencing prior to or extending beyond the Lease term shall be prorated
to correspond to the Lease term. Payment shall be made by Lessee to Lessor
within ten (10) days following receipt of an invoice for any amount due.

        8.2 LIABILITY INSURANCE.

               (a) CARRIED BY LESSEE. Lessee shall obtain and keep in force
during the term of this Lease a Commercial General Liability policy of insurance
protecting Lessee and Lessor (as an additional insured) against claims for
bodily injury, personal injury and property damage based upon, involving or
arising out of the ownership, use, occupancy or maintenance of the Premises and
all areas appurtenant thereto. Such insurance shall be on an occurrence basis
providing single limit coverage in an amount not less than $1,000,000 per
occurrence with an "Additional Insured-Managers or Lessors of Premises"
Endorsement and contain the "Amendment of the Pollution Exclusion" for damage
caused by heat, smoke or fumes from a hostile fire. The policy shall not contain
any intra-insured exclusions as between insured persons or organizations, but
shall include coverage for liability assumed under this Lease as an "insured
contract" for the performance of Lessee's indemnity obligations under this
Lease. The limits of said insurance required by this Lease or as carried by
Lessee shall not, however, limit the liability of Lessee nor relieve Lessee of
any obligation hereunder. All insurance to be carried by Lessee shall be primary
to and not contributory with any similar insurance carried by Lessor, whose
insurance shall be considered excess insurance only.


                                     PAGE 3
<PAGE>   16
               (b) CARRIED BY LESSOR. Lessor shall also maintain liability
insurance described in Paragraph 8.2(a), above, in addition to, and not in lieu
of, the insurance required to be maintained by Lessee. Lessee shall not be named
as an additional insured therein.

        8.3 PROPERTY INSURANCE-BUILDING, IMPROVEMENTS AND RENTAL VALUE.

               (a) BUILDING AND IMPROVEMENTS. The Insuring Party shall obtain
and keep in force during the term of this Lease a policy or policies in the name
of Lessor, with loss payable to Lessor and to the holders of any mortgages,
deeds of trust or ground leases on the Premises ("LENDER(S)"), insuring loss or
damage to the Premises. The amount of such insurance shall be equal to the full
replacement cost of the Premises, as the same shall exist from time to time, or
the amount required by Lenders, but in no event more than the commercially
reasonable and available insurable value thereof if, by reason of the unique
nature or age of the improvements involved, such later amount is less than full
replacement cost. If Lessor is the Insuring Party, however, Lessee Owned
Alterations and Utility Installations shall be insured by Lessee under Paragraph
8.4 rather than by Lessor. If the coverage is available and commercially
appropriate, such policy or policies shall insure against all risks of direct
physical loss or damage (except the perils of flood and/or earthquake unless
required by a Lender), including coverage for any additional costs resulting
from debris removal and reasonable amounts of coverage for the enforcement of
any ordinance or law regulating the reconstruction or replacement of any
undamaged sections of the Premises required to be demolished or removed by
reason of the enforcement of any building, zoning, safety or land use laws as
the result of a covered cause of loss. Said policy or policies shall also
contain an agreed valuation provision in lieu of any coinsurance clause, waiver
of subrogation, and inflation guard protection causing an increase in the annual
property insurance coverage amount by a factor of not less than the adjusted
U.S. Department of Labor Consumer Price Index for All Urban Consumers for the
city nearest to where the Premises are located. If such insurance coverage has a
deductible clause, the deductible amount shall not exceed $1,000 per occurrence,
and Lessee shall be liable for such deductible amount in the event of an Insured
Loss, as defined in Paragraph 9.1(c).

               (b) RENTAL VALUE. The Insuring Party shall, in addition, obtain
and keep in force during the term of this Lease a policy or policies in the name
of Lessor, with loss payable to Lessor and Lender(s), insuring the loss of the
full rental and other charges payable by Lessee to Lessor under this Lease for
one (1) year (including all real estate taxes, insurance costs, and any
scheduled rental increases). Said insurance shall provide that in the event the
Lease is terminated by reason of an insured loss, the period of indemnity for
such coverage shall be extended beyond the date of the completion of repairs or
replacement of the Premises, to provide for one full year's loss of rental
revenues from the date of any such loss. Said insurance shall contain an agreed
valuation provision in lieu of any coinsurance clause, and the amount of
coverage shall be adjusted annually to reflect the projected rental income,
property taxes, insurance premium costs and other expenses, if any, otherwise
payable by Lessee, for the next twelve (12) month period. Lessee shall be liable
for any deductible amount in the event of such loss.

               (c) ADJACENT PREMISES. If the Premises are part of a larger
building, or if the Premises are part of a group of buildings owned by Lessor
which are adjacent to the Premises, the Lessee shall pay for any increase in the
premiums for the property insurance of such building or buildings if said
increase is caused by Lessee's acts, omissions, use or occupancy of the
Premises.

               (d) TENANT'S IMPROVEMENTS. If the Lessor is the Insuring Party,
the Lessor shall not be required to insure Lessee Owned Alterations and Utility
Installations unless the item in question has become the property of Lessor
under the terms of this Lease. If Lessee is the Insuring Party, the policy
carried by Lessee under this Paragraph 8.3 shall insure Lessee Owned Alterations
and Utility Installations.

        8.4 LESSEE'S PROPERTY INSURANCE. Subject to the requirements of
Paragraph 8.5, Lessee at its cost shall either by separate policy or, at
Lessor's option, by endorsement to a policy already carried, maintain insurance
coverage on all of Lessee's personal property, Lessee Owned Alterations and
Utility Installations in, on, or about the Premises similar in coverage to that
carried by the Insuring Party under Paragraph 8.3. Such insurance shall be full
replacement cost coverage with a deductible of not to exceed $1,000 per
occurrence. The proceeds from any such insurance shall be used by Lessee for the
replacement of personal property or the restoration of Lessee Owned Alterations
and Utility Installations. Lessee shall be the Insuring Party with respect to
the insurance required by this Paragraph 8.4 and shall provide Lessor with
written evidence that such insurance is in force.

        8.5 INSURANCE POLICIES. Insurance required hereunder shall be in
companies duly licensed to transact business in the state where the Premises are
located, and maintaining during the policy term a "General Policyholders Rating"
of at least B+, V, or such other rating as may be required by a Lender having a
lien on the Premises, as set forth in the most current issue of "Best's
Insurance Guide." Lessee shall not do or permit to be done anything which shall
invalidate the insurance policies referred to in this Paragraph 8. If Lessee is
the Insuring Party, Lessee shall cause to be delivered to Lessor certified
copies of policies of such insurance or certificates evidencing the existence
and amounts of such insurance with the insureds and loss payable clauses as
required by this Lease. No such policy shall be cancelable or subject to
modification except after thirty (30) days prior written notice to Lessor.
Lessee shall at least thirty (30) days prior to the expiration of such policies,
furnish Lessor with evidence of renewals or "insurance binders" evidencing
renewal thereof, or Lessor may order such insurance and charge the cost thereof
to Lessee, which amount shall be payable by Lessee to Lessor upon demand. If the
Insuring Party shall fail to procure and maintain the insurance required to be
carried by the Insuring Party under this Paragraph 8, the other Party may, but
shall not be required to, procure and maintain the same, but at Lessee's
expense.

        8.6 WAIVER OF SUBROGATION. Without affecting any other rights or
remedies, Lessee and Lessor ("WAIVING PARTY") each hereby release and relieve
the other, and waive their entire right to recover damages (whether in contract
or in tort) against the other, for loss of or damage to the Waiving Party's
property arising out of or incident to the perils required to be insured against
under Paragraph 8. The effect of such releases and waivers of the right to
recover damages shall not be limited by the amount of insurance carried or
required, or by any deductibles applicable thereto.

        8.7 INDEMNITY. Except for Lessor's negligence or that of its agents,
employees, invitees or contractors and/or breach of express warranties, Lessee
shall indemnify, protect, defend and hold harmless the Premises, Lessor and its
agents, Lessor's master or ground lessor, partners and Lenders, from and against
any and all claims, loss of rents and/or damages, costs, liens, judgments,
penalties, permits, attorney's and consultant's fees, expenses and/or
liabilities arising out of, involving, or in dealing with, the occupancy of the
Premises by Lessee, the conduct of Lessee's business, any act, omission or
neglect of Lessee, its agents, contractors, employees or invitees, and out of
any Default or Breach by Lessee in the performance in a timely manner of any
obligation on Lessee's part to be performed under this Lease. The foregoing
shall include, but not be limited to, the defense or pursuit of any claim or any
action or proceeding involved therein, and whether or not (in the case of claims
made against Lessor) litigated and/or reduced to judgment, and whether well
founded or not. In case any action or proceeding be brought against Lessor by
reason of any of the foregoing matters, Lessee upon notice from Lessor shall
defend the same at Lessee's expense by counsel reasonably satisfactory to Lessor
and Lessor shall cooperate with Lessee in such defense. Lessor need not have
first paid any such claim in order to be so indemnified.

        8.8 EXEMPTION OF LESSOR FROM LIABILITY. Except to the extent caused by
the negligence or willful misconduct of Lessor, its agents, employees,
contractors or invitees, Lessor shall not be liable for injury or damage to the
person or goods, wares, merchandise or other property of Lessee, Lessee's
employees, contractors, invitees, customers, or any other person in or about the
Premises, whether such damage or injury is caused by or results from fire,
steam, electricity, gas, water or rain, or from the breakage, leakage,
obstruction or other defects of pipes, tire sprinklers, wires, appliances,
plumbing, air conditioning or lighting fixtures, or from any other cause,
whether the said injury or damage results from conditions arising upon the
Premises or upon other portions of the building of which the Premises are a
part, or from other sources or places, and regardless of whether the cause of
such damage or injury or the means of repairing the same is accessible or not.
Lessor shall not be liable for any damages arising from any act or neglect of
any other tenant of Lessor.

9.      DAMAGE OR DESTRUCTION.

        9.1 DEFINITIONS.

               (a) "PREMISES PARTIAL DAMAGE" shall mean damage or destruction to
the improvements on the Premises, other than Lessee Owned Alterations and
Utility Installations, the repair cost of which damage or destruction is less
than 50% of the then Replacement Cost of the Premises immediately prior to such
damage or destruction, excluding from such calculation the value of the land and
Lessee Owned Alterations and Utility Installations.

               (b) "PREMISES TOTAL DESTRUCTION" shall mean damage or destruction
to the Premises, other than Lessee Owned Alterations and Utility Installations,
the repair cost of which damage or destruction is 50% or more of the then
Replacement Cost of the Premises immediately prior to such damage or
destruction, excluding from such calculation the value of the land and Lessee
Owned Alterations and Utility Installations.

               (c) "INSURED LOSS" shall mean damage or destruction to
improvements on the Premises, other than Lessee Owned Alterations and Utility
Installations, which was caused by an event required to be covered by the
insurance described in Paragraph 8.3(a), irrespective of any deductible amounts
or coverage limits Involved.

               (d) "REPLACEMENT COST" shall mean the cost to repair or rebuild
the improvements owned by Lessor at the time of the occurrence to their
condition existing immediately prior thereto, including demolition, debris
removal and upgrading required by the operation of applicable building codes,
ordinances or laws, and without deduction for depreciation.

               (e) "HAZARDOUS SUBSTANCE CONDITION" shall mean the occurrence or
discovery of a condition involving the presence of, or a contamination by, a
Hazardous Substance as defined in Paragraph 6.2(a), in, on, or under the
Premises.

        9.2 PARTIAL DAMAGE-INSURED LOSS. If a Premises Partial Damage that is an
Insured Loss occurs, then Lessor shall, at Lessor's expense, repair such damage
(but not Lessee's Trade Fixtures or Lessee Owned Alterations and Utility
Installations) as soon as reasonably possible and this Lease shall continue in
full force and effect; provided, however, that Lessee shall, at Lessor's
election, make the repair of any damage or destruction the total 


<PAGE>   17
cost to repair of which is $10,000 or less, and, in such event, Lessor shall
make the insurance proceeds available to Lessee on a reasonable basis for that
purpose. Notwithstanding the foregoing, if the required insurance was not in
force or the insurance proceeds are not sufficient to effect such repair, the
Insuring Party shall promptly contribute the shortage in proceeds (except as to
the deductible which is Lessee's responsibility) as and when required to
complete said repairs. In the event, however, the shortage in proceeds was due
to the fact that, by reason of the unique nature of the improvements, full
replacement cost insurance coverage was not commercially reasonable and
available, Lessor shall have no obligation to pay for the shortage in insurance
proceeds or to fully restore the unique aspects of the Premises unless Lessee
provides Lessor with the funds to cover same, or adequate assurance thereof,
within ten (10) days following receipt of written notice of such shortage and
request therefore. If Lessor receives said funds or adequate assurance thereof
within said ten (10) day period, the party responsible for making the repairs
shall complete them as soon as reasonably possible and this Lease shall remain
in full force and effect. If Lessor does not receive such funds or assurance
within said period, Lessor may nevertheless elect by written notice to Lessee
within ten (10) days thereafter to make such restoration and repair as is
commercially reasonable with Lessor paying any shortage in proceeds, in which
case this Lease shall remain in full force and effect. If in such case Lessor
does not so elect, then this Lease shall terminate as of the date of the
occurrence of the damage or destruction. Unless otherwise agreed, Lessee shall
in no event have any right to reimbursement from Lessor for any funds
contributed by Lessee to repair any such damage or destruction. Premises partial
Damage due to flood or earthquake shall be subject to Paragraph 9.3 rather than
Paragraph 9.2, notwithstanding that there may be some insurance coverage, but
the net proceeds of any such insurance shall be made available for the repairs
if made by either Party.

        9.3 PARTIAL DAMAGE-UNINSURED LOSS. If a Premises Partial Damage that is
not an Insured Loss occurs, unless caused by a negligent or willful act of
Lessee (in which event Lessee shall make the repairs at Lessee's expense and
this Lease shall continue in full force and effect, but subject to Lessor's
rights under Paragraph 13), Lessor may at Lessor's option, either: (i) repair
such damage as soon as reasonably possible at Lessor's expense, in which event
this Lease shall continue in full force and effect, or (ii) give written notice
to Lessee within thirty (30) days after receipt by Lessor of knowledge of the
occurrence of such damage of Lessor's desire to terminate this Lease as of the
date sixty (60) days following the giving of such notice. In the event Lessor
elects to give such notice of Lessor's intention to terminate this Lease, Lessee
shall have the right within ten (10) days after the receipt of such notice to
give written notice to Lessor of Lessee's commitment to pay for the repair of
such damage totally at Lessee's expense and without reimbursement from Lessor.
Lessee shall provide Lessor with the required funds or satisfactory assurance
thereof within thirty (30) days following Lessee's said commitment. In such
event this Lease shall continue in full force and effect, and Lessor shall
proceed to make such repairs as soon as reasonably possible and the required
funds are available. If Lessee does not give such notice and provide the funds
or assurance thereof within the times specified above, this Lease shall
terminate as of the date specified in Lessor's notice of termination.

        9.4 TOTAL DESTRUCTION. Notwithstanding any other provision hereof, if a
Premises Total Destruction occurs (including any destruction required by any
authorized public authority), this Lease shall terminate sixty (60) days
following the date of such Premises Total Destruction, whether or not the damage
or destruction is an Insured Loss or was caused by a negligent or willful act of
negligence or willful misconduct of Lessee. In the event, however, that the
damage or destruction was caused by the negligence, or willful misconduct of
Lessee, Lessor shall have the right to recover Lessor's damages from Lessee
except as released and waived in Paragraph 8.6.

        9.5 DAMAGE NEAR END OF TERM. If at any time during the last six (6)
months of the term of this Lease there is damage for which the cost to repair
exceeds one (1) month's Base Rent, whether or not an Insured Loss, Lessor may,
at Lessor's option, terminate this Lease effective sixty (60) days following the
date of occurrence of such damage by giving written notice to Lessee of Lessor's
election to do so within thirty (30) days after the date of occurrence of such
damage. Provided, however, if Lessee at that time has an exercisable option to
extend this Lease or to purchase the Premises, then Lessee may preserve this
Lease by, within twenty (20) days following the occurrence of the damage, or
before the expiration of the time provided in such option for its exercise,
whichever is earlier ("Exercise Period"), (i) exercising such option and (ii)
providing Lessor with any shortage in insurance proceeds for adequate assurance
thereof) needed to make the repairs. If Lessee duly exercises such option during
said Exercise Period and provides Lessor with funds (or adequate assurance
thereof) to cover any shortage in insurance proceeds, Lessor shall, at Lessor's
expense repair such damage as soon as reasonably possible and this Lease shall
continue in full force and effect. If Lessee fails to exercise such option and
provide such funds or assurance during said Exercise Period, then Lessor may at
Lessor's option terminate this Lease as of the expiration of said sixty (60) day
period following the occurrence of such damage by giving written notice to
Lessee of Lessor's election to do so within ten (10) days after the expiration
of the Exercise Period, notwithstanding any term or provision in the grant of
option to the contrary.

        9.6 ABATEMENT OF RENT; LESSEE'S REMEDIES.

               (a) In the event of damage described in Paragraph 9.2 (Partial
Damage--Insured), whether or not Lessor or Lessee repairs or restores the
Premises, the Base Rent, Real Property Taxes, insurance premiums, and other
charges, if any, payable by Lessee hereunder for the period during which such
damage, its repair or the restoration continues (not to exceed the period for
which rental value insurance is required under Paragraph 8.3(b)), shall be
abated in proportion to the degree to which Lessee's use of the Premises is
impaired. Except for abatement of Base Rent, Real Property Taxes, insurance
premiums, and other charges, if any, as aforesaid, all other obligations of
Lessee hereunder shall be performed by Lessee, and Lessee shall have no claim
against Lessor for any damage suffered by reason of any such repair or
restoration.

               (b) If Lessor shall be obligated to repair or restore the
Premises under the provisions of this Paragraph 9 and shall not commence, in a
substantial and meaningful way, the repair or restoration of the Premises within
ninety (90) days after such obligation shall accrue, Lessee may, at any time
prior to the commencement of such repair or restoration, give written notice to
Lessor and to any Lenders of which Lessee has actual notice of Lessee's election
to terminate this Lease on a date not less than sixty (60) days following the
giving of such notice. If Lessee gives such notice to Lessor and such Lenders
and such repair or restoration is not commenced within thirty (30) days after
receipt of such notice, this Lease shall terminate as of the date specified in
said notice. If Lessor or a Lender commences the repair or restoration of the
Premises within thirty (30) days after receipt of such notice, this Lease shall
continue in full force and effect. "COMMENCE" as used in this Paragraph shall
mean either the unconditional authorization of the preparation of the required
plans, or the beginning of the actual work on the Premises, whichever first
occurs.

        9.7 HAZARDOUS SUBSTANCE CONDITIONS. If a Hazardous Substance Condition
occurs, unless Lessee is legally responsible therefor (in which case Lessee
shall make the investigation and remediation thereof required by Applicable Law
and this Lease shall continue in full force and effect, but subject to Lessor's
rights under Paragraph 13), Lessor may at Lessor's option either (i) investigate
and remediate such Hazardous Substance Condition, if required, as soon as
reasonably possible at Lessor's expense, in which event this Lease shall
continue in full force and effect, or (ii) if the estimated cost to investigate
and remediate such condition exceeds twelve (12) times the then monthly Base
Rent or $100,000, whichever is greater, give written notice to Lessee within
thirty (30) days after receipt by Lessor of knowledge of the occurrence of such
Hazardous Substance Condition of Lessor's desire to terminate this Lease as of
the date sixty (60) days following the giving of such notice. In the event
Lessor elects to give such notice of Lessor's intention to terminate this Lease,
Lessee shall have the right within ten (10) days after the receipt of such
notice to give written notice to Lessor of Lessee's commitment to pay for the
investigation and remediation of such Hazardous Substance Condition totally at
Lessee's expense and without reimbursement from Lessor except to the extent of
an amount equal to twelve (12) times the then monthly Base Rent or $100,000,
whichever is greater. Lessee shall provide Lessor with the funds required of
Lessee or satisfactory assurance thereof within thirty (30) days following
Lessee's said commitment. In such event this Lease shall continue in full force
and effect, and Lessor shall proceed to make such investigation and remediation
as soon as reasonably possible and the required funds are available. It Lessee
does not give such notice and provide the required funds or assurance thereof
within the times specified above, this Lease shall terminate as of the date
specified In Lessor's notice of termination. If a Hazardous Substance Condition
occurs for which Lessee is not legally responsible, there shall be abatement of
Lessee's obligations under this Lease to the same extent as provided in
Paragraph 9.6(a) for a period of not to exceed twelve months.

        9.8 TERMINATION--ADVANCE PAYMENTS. Upon termination of this Lease
pursuant to this Paragraph 9, an equitable adjustment shall be made concerning
advance Base Rent and any other advance payments made by Lessee to Lessor.
Lessor shall, in addition, return to Lessee so much of Lessee's Security Deposit
as has not been, or is not then required to be, used by Lessor under the terms
of this Lease.

        9.9 WAIVE STATUTES. Lessor and Lessee agree that the terms of this Lease
shall govern the effect of any damage to or destruction of the Premises with
respect to the termination of this Lease and hereby waive the provisions of any
present or future statute to the extent inconsistent herewith.

10.     REAL PROPERTY TAXES.

        10.1 (a) PAYMENT OF TAXES. Lessee shall pay the Real Property Taxes, as
defined in Paragraph 10.2, applicable to the Premises during the term of this
Lease. Subject to Paragraph 10.1(b), all such payments shall be made at least
ten (10) days prior to the delinquency date of the applicable installment.
Lessee shall promptly furnish Lessor with satisfactory evidence that such taxes
have been paid. If any such taxes to be paid by Lessee shall cover any period of
time prior to or after the expiration or earlier termination of the term hereof,
Lessee's share of such taxes shall be equitably prorated to cover only the
period of time within the tax fiscal year this Lease is in effect, and Lessor
shall reimburse Lessee for any overpayment after such proration. If Lessee shall
fail to pay any Real Property Taxes required by this Lease to be paid by Lessee,
Lessor shall have the right to pay the same, and Lessee shall reimburse Lessor
therefor upon demand.

               (b) ADVANCE PAYMENT. In order to insure payment when due and
before delinquency of any or all Real Property Taxes, Lessor reserves the right,
at Lessor's option, to estimate the current Real Property Taxes applicable to
the Premises, and to require such current year's Real Property Taxes to be paid
in advance to Lessor by Lessee, either: (i) in a lump sum amount equal to the
installment due, at least twenty (20) days prior to the applicable delinquency
date, or (ii) monthly in advance with the payment of the Base Rent. If Lessor
elects to require payment monthly in advance, the monthly payment shall be the
equal monthly amount which, over the number of months remaining before the month
in which the applicable tax 


<PAGE>   18
installment would become delinquent (and without interest thereon), would
provide a fund large enough to fully discharge before delinquency the estimated
installment of taxes to be paid. When the actual amount of the applicable tax
bill is known, the amount of such equal monthly advance payment shall be
adjusted as required to provide the fund needed to pay the applicable taxes
before delinquency. If the amounts paid to Lessor by Lessee under the provisions
of this Paragraph are insufficient to discharge the obligations of Lessee to pay
such Real Property Taxes as the same become due, Lessee shall pay to Lessor,
upon Lessor's demand, such additional sums as are necessary to pay such
obligations. All moneys paid to Lessor under this Paragraph may be intermingled
with other moneys of Lessor and shall not bear interest.

        10.2 DEFINITION OF "REAL PROPERTY TAXES." As used herein, the term "REAL
PROPERTY TAXES" shall include any form of real estate tax or assessment,
general, special, ordinary or extraordinary, and any license fee, commercial
rental tax, improvement bond or bonds, levy or tax (other than inheritance,
personal income or estate taxes) imposed upon the Premises by any authority
having the direct or indirect power to tax, including any city, state or federal
government, or any school, agricultural, sanitary, fire, street, drainage or
other improvement district thereof, levied against any legal or equitable
interest of Lessor in the Premises or in the real property of which the Premises
are a part, Lessor's right to rent or other income therefrom, and/or Lessor's
business of leasing the Premises. The term "REAL PROPERTY TAXES" shall also
include any tax, fee, levy, assessment or charge, or any increase therein
imposed by reason of events occurring, or changes in applicable law taking
effect, during the term of this Lease, including but not limited to the
execution of this Lease, or any modification, amendment or transfer thereof, and
whether or not contemplated by the Parties.

        10.3 JOINT ASSESSMENT. If the Premises are not separately assessed,
Lessee's liability shall be an equitable proportion of the Real Property Taxes
for all of the land and improvements included within the tax parcel assessed,
such proportion to be determined by Lessor from the respective valuations
assigned in the assessor's work sheets or such other information as may be
reasonably available. Lessor's reasonable determination thereof, in good faith,
shall be conclusive.

        10.4 PERSONAL PROPERTY TAXES. Lessee shall pay prior to delinquency all
taxes assessed against and levied upon Lessee Owned Alterations, Utility
Installations, Trade Fixtures, furnishings, equipment and all personal property
of Lessee contained in the Premises or elsewhere. When possible, Lessee shall
cause its Trade Fixtures, furnishings, equipment and all other personal property
to be assessed and billed separately from the real property of Lessor. If any of
Lessee's said personal property shall be assessed with Lessor's real property,
Lessee shall pay Lessor the taxes attributable to Lessee within ten (10) days
after receipt of a written statement setting forth the taxes applicable to
Lessee's property or, at Lessor's option, as provided in Paragraph 10.1(b).

11.     UTILITIES. Lessee shall pay for all water, gas, heat, light, power,
telephone, trash disposal and other utilities and services supplied to the
Premises, together with any taxes thereon. If any such services are not
separately metered to Lessee, Lessee shall pay a reasonable proportion, to be
determined by Lessor, of all charges jointly metered with other premises.

12.     ASSIGNMENT AND SUBLETTING.

        12.1 LESSOR'S CONSENT REQUIRED.

               (a) Lessee shall not voluntarily or by operation of law assign,
transfer, mortgage or otherwise transfer or encumber (collectively,
"ASSIGNMENT") or sublet all or any part of Lessee's interest in this Lease or in
the Premises without Lessor's prior written consent given under and subject to
the terms of Paragraph 36 which consent shall not be unreasonably withheld or
delayed.

               (b) Deleted.

               (c) Deleted.

               (d) Deleted.

        12.2 TERMS AND CONDITIONS APPLICABLE TO ASSIGNMENT AND SUBLETTING.

               (a) Regardless of Lessor's consent, any assignment or subletting
shall not: (i) be effective without the express written assumption by such
assignee or sublessee of the obligations of Lessee under this Lease, (ii)
release Lessee of any obligations hereunder, or (iii) alter the primary
liability of Lessee for the payment of Base Rent and other sums due Lessor
hereunder or for the performance of any other obligations to be performed by
Lessee under this Lease.

               (b) Lessor may accept any rent or performance of Lessee's
obligations from any person other than Lessee pending approval or disapproval of
an assignment. Neither a delay in the approval or disapproval of such assignment
nor the acceptance of any rent or performance shall constitute a waiver or
estoppel of Lessor's right to exercise its remedies for the Default or Breach by
Lessee of any of the terms, covenants or conditions of this Lease.

               (c) The consent of Lessor to any assignment or subletting shall
not constitute a consent to any subsequent assignment or subletting by Lessee or
to any subsequent or successive assignment or subletting by the sublessee.
However, Lessor may consent to subsequent sublettings and assignments of the
sublease or any amendments or modifications thereto without notifying Lessee or
anyone else liable on the Lease or sublease and without obtaining their consent,
and such action shall not relieve such persons from liability under this Lease
or sublease.

               (d) In the event of any Default or Breach of Lessee's obligations
under this Lease, Lessor may proceed directly against Lessee, any Guarantors or
any one else responsible for the performance of the Lessee's obligations under
this Lease, including the sublessee, without first exhausting Lessor's remedies
against any other person or entity responsible therefor to Lessor, or any
security held by Lessor or Lessee.

               (e) Each request for consent to an assignment or subletting shall
be in writing, accompanied by information relevant to Lessor's determination as
to the financial and operational responsibility and appropriateness of the
proposed assignee or sublessee, including but not limited to the intended use
and/or required modification of the Premises. Lessee agrees to provide Lessor
with such other or additional information and/or documentation as may be
reasonably requested by Lessor.

               (f) Any assignee of, or sublessee under, this Lease shall, by
reason of accepting such assignment or entering into such sublease, be deemed,
for the benefit of Lessor, to have assumed and agreed to conform and comply with
each and every term, covenant, condition and obligation herein to be observed or
performed by Lessee during the term of said assignment or sublease, other than
such obligations as are contrary to or inconsistent with provisions of an
assignment or sublease to which Lessor has specifically consented in writing.

               (g) Deleted.

               (h) Deleted.

        12.3 ADDITIONAL TERMS AND CONDITIONS APPLICABLE TO SUBLETTING. The
following terms and conditions shall apply to any subletting by Lessee of all or
any part of the Premises and shall be deemed included in all subleases under
this Lease whether or not expressly incorporated therein:

               (a) Lessee hereby assigns and transfers to Lessor all of Lessee's
interest in all rentals and income arising from any sublease of all or a portion
of the Premises heretofore or hereafter made by Lessee, and Lessor may collect
such rent and income and apply same toward Lessee's obligations under this
Lease; provided, however, that unless a Breach (as defined in Paragraph 13.1)
shall occur in the performance of Lessee's obligations under this Lease, Lessee
may, except as otherwise provided in this Lease, receive, collect and enjoy the
rents accruing under such sublease. Lessor shall not, by reason of this or any
other assignment of such sublease to Lessor, nor by reason of the collection of
the rents from a sublessee, be deemed liable to the sublessee for any failure of
Lessee to perform and comply with any of Lessee's obligations to such sublessee
under such sublease. Lessee hereby irrevocably authorizes and directs any such
sublessee, upon receipt of a written notice from Lessor stating that a Breach
exists in the performance of Lessee's obligations under this Lease, to pay to
Lessor the rents and other charges due and to become due under the sublease.
Sublessee shall rely upon any such statement and request from Lessor and shall
pay such rents and other charges to Lessor without any obligation or right to
inquire as to whether such Breach exists and notwithstanding any notice from or
claim from Lessee to the contrary Lessee shall have no right or claim against
said sublessee, or, until the Breach has been cured, against Lessor, for any
such rents and other charges so paid by said sublessee to Lessor.

               (b) Deleted.

               (c) Any matter of thing requiring the consent of the sublessor
under the sublease shall also require the consent of Lessor herein.

               (d) No sublessee shall further assign or sublet all or any part
of the Premises without Lessor's prior written consent.

               (e) Lessor shall deliver a copy of any notice of Default or
Breach by Lessee to the sublessee, who shall have the right to cure the Default
of Lessee within the grace period, if any, specified in such notice. The
sublessee shall have a right of reimbursement and offset from and against Lessee
for any such Defaults cured by the sublessee.

13.     DEFAULT; BREACH; REMEDIES.

        13.1 DEFAULT; BREACH. Lessor and Lessee agree that if an attorney is
consulted by either party in connection with a Default or Breach (as hereinafter
defined), $350.00 is a reasonable minimum sum per such occurrence for legal
services and costs in the preparation and service of a notice 


<PAGE>   19
of Default, and that either party may include the cost of such services and
costs in said notice as due and payable to cure said Default. A "DEFAULT" is
defined as a failure by either party to observe, comply with or perform any of
the terms, covenants, conditions or rules applicable to Lessee under this Lease.
A "BREACH" is defined as the occurrence of any one or more of the following
Defaults, and, where a grace period for cure after notice is specified herein,
the failure by Lessee to cure such Default prior to the expiration of the
applicable grace period, and shall entitle Lessor to pursue the remedies set
forth in Paragraphs 13.2 and/or 13.3:

               (a) The vacating of the Premises without the intention to
reoccupy same, or the abandonment of the Premises.

               (b) Except as expressly otherwise provided in this Lease, the
failure by Lessee to make any payment of Base Rent or any other monetary payment
required to be made by Lessee hereunder, whether to Lessor or to a third party
as and when due, the failure by Lessee to provide Lessor with reasonable
evidence of insurance or surety bond required under this Lease, or the failure
of Lessee to fulfill any obligation under this Lease which endangers or
threatens life or property, where such failure continues for a period of three
(3) days following receipt or written notice thereof by or on behalf of Lessor
to Lessee.

               (c) Except as expressly otherwise provided in this Lease, the
failure by Lessee to provide Lessor with reasonable written evidence (in duly
executed original form, if applicable) of (i) compliance with applicable law per
Paragraph 6.3, (ii) the inspection, maintenance and service contracts required
under Paragraph 7.1(b), (iii) the recission of an unauthorized assignment or
subletting per Paragraph 12.1(b), (iv) a Tenancy Statement per Paragraphs 16 or
37, (v) the subordination or non-subordination of this Lease per Paragraph 30,
(vi) the guaranty of the performance of Lessee's obligations under this Lease if
required under Paragraphs 1.11 and 37, (vii) the execution of any document
requested under Paragraph 42 (easements), or (viii) any other documentation or
information, which Lessor may reasonably require of Lessee under the terms of
this Lease, where any such failure continues for a period of twenty (20) days
following receipt of written notice by or on behalf of Lessor to Lessee.

               (d) A Default by Lessee as to the terms, covenants, conditions or
provisions of this Lease, or of the rules adopted under Paragraph 40 hereof,
that are to be observed, complied with or performed by Lessee, other than those
described in subparagraphs (a), (b) or (c), above, where such Default continues
for a period of thirty (30) days after written notice thereof by or on behalf of
Lessor to Lessee; provided, however, that if the nature of Lessee's Default is
such that more than thirty (30) days are reasonably required for its cure, then
it shall not be deemed to be a Breach of this Lease by Lessee if Lessee
commences such cure within said thirty (30) day period and thereafter diligently
prosecutes such cure to completion.

               (e) The occurrence of any of the following events: (i) The making
by Lessee of any general arrangement or assignment for the benefit of creditors:
(ii) Lessee's becoming a "debtor" as defined in 11 U.S.C. Section 101 or any
successor statute thereto (unless, in the case of a petition filed against
Lessee, the same is dismissed within sixty (60) days); (iii) the appointment of
a trustee or receiver to take possession of substantially all of Lessee's assets
located at the Premises or of Lessee's interest in this Lease, where possession
is not restored to Lessee within sixty (60) days; or (iv) the attachment,
execution or other judicial seizure of substantially all of Lessee's assets
located at the Premises or of Lessee's interest in this Lease, where such
seizure is not within sixty (60) days; provided; however, in the event that any
provision of this subparagraph (e) is contrary to any applicable law, such
provision shall be of no force or effect, and not affect the validity of the
remaining provisions.

               (f) The discovery by Lessor that any financial statement given to
Lessor by Lessee of any Guarantor of Lessee's obligations hereunder was
materially false.

               (g) If the performance of Lessee's obligations under this Lease
is guaranteed: (i) the death of a guarantor, (ii) the termination of a
guarantor's liability with respect to this Lease other than in accordance with
the terms of such guaranty, (iii) a guarantor's becoming insolvent or the
subject of a bankruptcy filing, (iv) a guarantor's refusal to honor the
guaranty, or (v) a guarantor's breach of its guaranty obligation on an
anticipatory breach basis and Lessee's failure, within sixty (60) days following
written notice by or on behalf of Lessor to Lessee of any such event, to provide
Lessor with written alternative assurance or security, which, when coupled with
the then existing resources of Lessee, equals or exceeds the combined financial
resources of Lessee and the guarantors that existed at the time of execution of
this Lease.

        13.2 REMEDIES. If Lessee fails to perform any affirmative duty or
obligation of Lessee under this Lease, within ten (10) days after written notice
to Lessee (or in case of an emergency, without notice), Lessor may at its option
(but without obligation to do so), perform such duty or obligation on Lessee's
behalf, including but not limited to the obtaining of reasonably required bonds,
insurance policies, or governmental licenses, permits or approvals. The costs
and expenses of any such performance by Lessor shall be due and payable by
Lessee to Lessor upon invoice therefor. If any check given to Lessor by Lessee
shall not be honored by the bank upon which it is drawn, Lessor, at its option,
may require all future payments to be made under this Lease by Lessee to be made
only by cashier's check. In the event of a Breach of this Lease by Lessee, as
defined in Paragraph 13.1, with or without further notice or demand, and without
limiting Lessor in the exercise of any right or remedy which Lessor may have by
reason of such Breach, Lessor may:

               (a) Terminate Lessee's right to possession of the Premises by any
lawful means, in which case this Lease and the term hereof shall terminate and
Lessee shall immediately surrender possession of the Premises to Lessor. In such
event Lessor shall be entitled to recover from Lessee: (i) the worth at the time
of the award of the unpaid rent which had been earned at the time of
termination: (ii) the worth at the time of award of the amount by which the
unpaid rent which would have been earned after termination until the time of
award exceeds the amount of such rental loss that the Lessee proves could have
been reasonably avoided; (iii) the worth at the time of award of the amount by
which the unpaid rent for the balance of the term after the time of award
exceeds the amount of such rental loss that the Lessee proves could be
reasonably avoided; and (iv) any other amount necessary to compensate Lessor for
all the detriment proximately caused by the Lessee's failure to perform its
obligations under this Lease or which in the ordinary course of things would be
likely to result therefrom, including but not limited to the cost of recovering
possession of the Premises, expenses of reletting, including necessary
renovation and alteration of the Premises, reasonable attorneys' fees, and that
portion of the leasing commission paid by Lessor applicable to the unexpired
term of this Lease. The worth at the time of award of the amount referred to in
provision (iii) of the prior sentence shall be computed by discounting such
amount at the discount rate of the Federal Reserve Bank of San Francisco at the
time of award plus one percent. Efforts by Lessor to mitigate damages caused by
Lessee's Default or Breach of this Lease shall not waive Lessor's right to
recover damages under this Paragraph. If termination of this Lease is obtained
through the provisional remedy of unlawful detainer, Lessor shall have the right
to recover in such proceeding the unpaid rent and damages as are recoverable
therein, or Lessor may reserve therein the right to recover all or any part
thereof in a separate suit for such rent and/or damages. If a notice and grace
period required under subparagraphs 13.1(b), (c) or (d) was not previously
given, a notice to pay rent or quit, or to perform or quit, as the case may be,
given to Lessee under any statute authorizing the forfeiture of leases for
unlawful detainer shall also constitute the applicable notice for grace period
purposes required by subparagraphs 13.1(b), (c) or (d). In such case, the
applicable grace period under subparagraphs 13.1(b), (c) or (d) and under the
unlawful detainer statute shall run concurrently after the one such statutory
notice, and the failure of Lessee to cure the Default within the greater of the
two such grace periods shall constitute both an unlawful detainer and a Breach
of this Lease entitling Lessor to the remedies provided for in this Lease and/or
by said statute.

               (b) Continue the Lease and Lessee's right to possession in effect
(in California under California Civil Code Section 1951.4) after Lessee's Breach
and abandonment and recover the rent as It becomes due, provided Lessee has the
right to sublet or assign, subject only to reasonable limitations. See
Paragraphs 12 and 36 for the limitations on assignment and subletting which
limitations Lessee and Lessor agree are reasonable. Acts of maintenance or
preservation, efforts to relet the Premises, or the appointment of a receiver to
protect the Lessor's interest under the Lease, shall not constitute a
termination of the Lessee's right to possession.

               (c) Pursue any other remedy now or hereafter available to Lessor
under the laws or judicial decisions of the state wherein the Premises are
located.

               (d) The expiration or termination of this Lease and/or the
termination of Lessee's right to possession shall not relieve Lessee from
liability under any indemnity provisions of this Lease as to matters occurring
or accruing during the term hereof or by reason of Lessee's occupancy of the
Premises.

        13.3 INDUCEMENT RECAPTURE IN EVENT OF BREACH. Any agreement by Lessor
for free or abated rent or other charges applicable to the Premises, or for the
giving or paying by Lessor to or for Lessee of any cash or other bonus,
inducement or consideration for Lessee's entering into this Lease, all of which
concessions are hereinafter referred to as "INDUCEMENT PROVISIONS" shall be
deemed conditioned upon Lessee's full and faithful performance of all of the
terms, covenants and conditions of this Lease to be performed or observed by
Lessee during the term hereof as the same may be extended. Upon the occurrence
of a Breach of this Lease by Lessee, as defined In Paragraph 13.1, any such
Inducement Provision shall automatically be deemed deleted from this Lease and
of no further force or effect, and any rent, other charge, bonus, inducement or
consideration theretofore abated, given or paid by Lessor under such an
Inducement Provision shall be immediately due and payable by Lessee to Lessor,
and recoverable by Lessor as additional rent due under this Lease,
notwithstanding any subsequent cure of said Breach by Lessee. The acceptance by
Lessor of rent or the cure of the Breach which initiated the operation of this
Paragraph shall not be deemed a waiver by Lessor of the provisions of this
Paragraph unless specifically so stated in writing by Lessor at the time of such
acceptance.

        13.4 LATE CHARGES. Lessee hereby acknowledges that late payment by
Lessee to Lessor of rent and other sums due hereunder will cause Lessor to incur
costs not contemplated by this Lease, the exact amount of which will be
extremely difficult to ascertain. Such costs include, but are not limited to,
processing and accounting charges, and late charges which may be imposed upon
Lessor by the terms of any ground lease, mortgage or trust deed covering the
Premises. Accordingly, if any installment of rent or any other sum due from
Lessee shall not be received by Lessor or Lessor's designee within five (5) days
after receipt of notice from Lessor that such amount shall be due, then, Lessee
shall pay to Lessor a late charge equal to six percent (6%) of such overdue
amount. The parties hereby agree that such late charge represents a fair and
reasonable estimate of the costs Lessor 


<PAGE>   20
will incur by reason of late payment by Lessee. Acceptance of such late charge
by Lessor shall in no event constitute a waiver of Lessee's Default or Breach
with respect to such overdue amount, nor prevent Lessor from exercising any of
the other rights and remedies granted hereunder. In the event that a late charge
is payable hereunder, whether or not collected, for three (3) consecutive
installments of Base Rent, then notwithstanding Paragraph 4.1 or any other
provision of this Lease to the contrary, Base Rent shall, at Lessor's option,
become due and payable quarterly in advance.

        13.5 BREACH BY LESSOR. Lessor shall not be deemed in breach of this
Lease unless Lessor fails within a reasonable time to perform an obligation
required to be performed by Lessor. For purposes of this Paragraph 13.5, a
reasonable time shall in no event be less than thirty (30) days after receipt by
Lessor, and by the holders of any ground lease, mortgage or deed of trust
covering the Premises whose name and address shall have been furnished Lessee in
writing for such purpose, of written notice specifying wherein such obligation
of Lessor has not been performed; provided, however, that if the nature of
Lessor's obligation is such that more than thirty (30) days after such notice
are reasonably required for its performance, then Lessor shall not be in breach
of this Lease if performance is commenced within such thirty (30) day period and
thereafter diligently pursued to completion.

14.     CONDEMNATION. If the Premises or any portion thereof are taken under the
power of eminent domain or sold under the threat of the exercise of said power
(all of which are herein called "condemnation"), this Lease shall terminate as
to the part so taken as of the date the condemning authority takes title or
possession, whichever first occurs. If more than ten percent (10%) of the floor
area of the Premises, or more than twenty-five percent (25%) of the land area
not occupied by any building, is taken by condemnation, Lessee may, at Lessee's
option, to be exercised in writing within ten (10) days after Lessor shall have
given Lessee written notice of such taking (or in the absence of such notice,
within ten (10) days after the condemning authority shall have taken possession)
terminate this Lease as of the date the condemning authority takes such
possession. If Lessee does not terminate this Lease in accordance with the
foregoing, this Lease shall remain in full force and effect as to the portion of
the Premises remaining except that the Base Rent shall be reduced in the same
proportion as the rentable floor area of the Premises taken bears to the total
rentable floor area of the building located on the Premises. No reduction of
Base Rent shall occur if the only portion of the Premises taken is land on which
there is no building. Any award for the taking of all or any part of the
Premises under the power of eminent domain or any payment made under threat of
the exercise of such power shall be the property of Lessor whether such award
shall be made as compensation for diminution in value of the leasehold or for
the taking of the fee, or as severance damages; provided however that Lessee
shall be entitled to any compensation separately awarded to Lessee for Lessee's
relocation expenses and/or loss of Lessee's Trade Fixtures. In the event that
this Lease is not terminated by reason of such condemnation, Lessor shall to the
extent of its net severance damages received, over and above the legal and other
expenses incurred by Lessor in the condemnation matter, repair any damage to the
Premises caused by such condemnation except to the extent that Lessee has been
reimbursed therefor by the condemning authority. Lessee shall be responsible for
the payment of any amount in excess of such net severance damages required to
complete such repair.

15.     BROKERS FEE.

        15.1 The Brokers named in Paragraph 1.10 are the procuring causes of
this Lease.

        15.2 Upon execution of this Lease by both Parties, Lessor shall pay to
said Brokers jointly or in such separate shares as they may mutually designate
in writing, a fee as set forth in a separate written agreement between Lessor
and said Brokers for brokerage services rendered by said Brokers to Lessor in
this transaction.

        15.3 Deleted

        15.4 Deleted

        15.5 Lessee and Lessor each represent and warrant to the other that it
has had no dealings with any person, firm, broker or finder (other than the
Brokers, if any named in Paragraph 1.10) in connection with the negotiation of
this Lease and/or the consummation of the transaction contemplated hereby and
that no broker or other person, firm or entity other than said named Brokers is
entitled to any commission or finder's fee in connection with said transaction.
Lessee and Lessor do each hereby agree to indemnify, protect, defend, and hold
the other harmless from and against liability for compensation or charges which
may be claimed by any such unnamed broker, finder or other similar party by
reason of any dealings or actions of the indemnifying Party, including any
costs, expenses, attorneys' fees reasonably incurred with respect thereto.

        15.6 Lessor and Lessee hereby consent to and approve all agency
relationships, including any dual agencies, indicated in Paragraph 1.10.

16.     TENANCY STATEMENT.

        16.1 Each Party (as "RESPONDING PARTY") shall within ten (10) days after
written notice from the other Party (the "REQUESTING PARTY") execute,
acknowledge and deliver to the Requesting Party a statement in writing in form
similar to the then most current "TENANCY STATEMENT" form published by the
American Industrial Real Estate Association plus such additional information,
confirmation and/or statements as may be reasonably requested by the Requesting
Party.

        16.2 It Lessor desires to finance, refinance. or sell the Premises any
part thereof, or the building of which the Premises are a part, Lessee and all
Guarantors of Lessee's performance hereunder shall deliver to any potential
lender or purchaser designated by Lessor such financial statements of Lessee and
such Guarantors as may be reasonably required by such lender or purchaser,
including but not limited to Lessee's financial statements for the past three
(3) years. All such financial statements shall be received by Lessor and such
lender or purchaser in confidence and shall be used only for the purposes herein
set forth.

17.     LESSOR'S LIABILITY. The term "LESSOR" as used herein shall mean the
owner at the time in question of the fee title to the Premises, or, if this is a
sublease, of the Lessee's interest in the prior lease. In the event of a
transfer of Lessor's title or interest in the Premises or in this Lease, Lessor
shall deliver to the transferee or assignee (in cash or by credit) any unused
Security Deposit held by Lessor at the time of such transfer or assignment.
Except as provided in Paragraph 15, upon such transfer or assignment and
delivery of the Security Deposit, as aforesaid, the prior Lessor shall be
relieved of all liability with respect to the obligations and/or covenants under
this Lease thereafter to be performed by the Lessor. Subject to the foregoing,
the obligations and/or covenants in this Lease to be performed by the Lessor
shall be binding only upon the Lessor as hereinabove defined.

18.     SEVERABILITY. The invalidity of any provision of this Lease, as
determined by a court of competent jurisdiction, shall in no way affect the
validity of an other provision hereof.

19.     INTEREST ON PAST-Due Obligations. Any monetary payment due Lessor
hereunder other than late charges, not received by Lessor within thirty (30)
days following the date on which it was due, shall bear interest from the
thirty-first (31st) day after it was due at the rate of 12% per annum, but not
exceeding the maximum rate allowed by law, in addition to the late charge
provided for in Paragraph 13.4.

20.     TIME OF ESSENCE. Time is of the essence with respect to the performance
of all obligations to be performed or observed by the Parties under this Lease.

21.     RENT DEFINED. All monetary obligations of Lessee to Lessor under the
terms of this Lease are deemed to be rent.

22.     NO PRIOR OR OTHER AGREEMENTS; BROKER DISCLAIMER. This Lease contains all
agreements between the Parties with respect to any matter mentioned herein and
no other prior or contemporaneous agreement or understanding shall be effective.
Lessor and Lessee each represents and warrants to the Broker that it has made,
and is relying solely upon, its own investigation as to the nature, quality,
character and financial responsibility of the other Party to the Lease and as to
the nature, quality and character of the Premises. Brokers have no
responsibility with respect thereto or with respect to any default or breach
hereof by either Party.

23.     NOTICES.

        23.1 All notices required or permitted by this Lease shall be in writing
and may be delivered in person (by hand or by messenger or courier service) or
may be sent by regular, certified or registered mail or U.S. Postal Service
Express Mail with postage prepaid or by facsimile transmission, and shall be
deemed sufficiently given if served in a manner specified in this Paragraph 23.
The addresses noted adjacent to a Party's signature on this Lease shall be that
Party's address for delivery or mailing of notice purposes. Either Party may by
written notice to the other specify a different address for notice purposes,
except that upon Lessee's taking possession of the Premises, the Premises shall
constitute Lessee's address for the purpose of mailing or delivering notices to
Lessee. A copy of all notices required or permitted to be given to Lessor
hereunder shall be concurrently transmitted to such party or parties at such
addresses as Lessor may from time to time hereafter designate by written notice
to Lessee.

        23.2 Any notice sent by registered or certified mail, return receipt
requested, shall be deemed given on the date of delivery shown on the receipt
card or if no delivery date is shown, the postmark thereon. If sent by regular
mail the notice shall be deemed given forty-eight (48) hours after the same is
addressed as required herein and mailed with postage prepaid. Notices delivered
by United States Express Mail or overnight courier that guarantees next day
delivery shall be deemed given twenty-four (24) hours after delivery of the same
to the United States Postal Service or courier. If any notice is transmitted by
facsimile transmission or similar means, the same shall be deemed served or
delivered upon telephone confirmation of receipt of the transmission thereof,
provided a copy is also delivered via delivery or mail. If notice is received on
a Sunday or legal holiday, it shall be deemed received on the next business day.

24.     WAIVERS. No waiver by Lessor of the Default or Breach of any term,
covenant or condition hereof by Lessee, shall be deemed a waiver of any other
term, covenant or condition hereof, or of any subsequent Default or Breach by
Lessee of the same or of any other term, covenant or condition hereof. Lessor's
consent to, or approval of, any act shall not be deemed to render unnecessary
the obtaining of Lessor's consent to, or approval of, any 


<PAGE>   21
subsequent or similar act by Lessee, or be construed as the basis of an estoppel
to enforce the provision or provisions of this Lease requiring such consent.
Regardless of Lessor's knowledge of a Default or Breach at the time of accepting
rent, the acceptance of rent by Lessor shall not be a waiver of any preceding
Default or Breach by Lessee of any provision hereof, other than the failure of
Lessee to pay the particular rent so accepted. Any payment given Lessor by
Lessee may be accepted by Lessor on account of moneys or damages due Lessor,
notwithstanding any qualifying statements or conditions made by Lessee in
connection therewith, which such statements and/or conditions shall be of no
force or effect whatsoever unless specifically agreed to in writing by Lessor at
or before the time of deposit of such payment.

25.     RECORDING. Either Lessor or Lessee shall, upon request of the other,
execute, acknowledge and deliver to the other a short form memorandum of this
Lease for recording purposes. The Party requesting recordation shall be
responsible for payment of any fees or taxes applicable thereto.

26.     NO RIGHT TO HOLDOVER. Lessee has no right to retain possession of the
Premises or any part thereof beyond the expiration or earlier termination of
this Lease.

27.     CUMULATIVE REMEDIES. No remedy or election hereunder shall be deemed
exclusive but shall, wherever possible, be cumulative with all other remedies at
law or in equity.

28.     COVENANTS AND CONDITIONS. All provisions of this Lease to be observed or
performed by Lessee are both covenants and conditions.

29.     BINDING EFFECTS; CHOICE OF LAW. This lease shall be binding upon the
parties, their personal representatives, successors and assigns and be governed
by the laws of the State in which the Premises are located. Any litigation
between the Parties hereto concerning this Lease shall be initiated in the
county in which the Premises are located.

30.     SUBORDINATION; ATTORNMENT; NON-DISTURBANCE.

        30.1 SUBORDINATION. This Lease and any Option granted hereby shall be
subject and subordinate to any ground lease, mortgage, deed of trust, or other
hypothecation or security device (collectively, "SECURITY DEVICE"), now or
hereafter placed by Lessor upon the real property of which the Premises are
part, to any and all advances made on the security thereof, and to all renewals,
modifications, consolidations, replacements and extensions thereof. Lessee
agrees that the Lenders holding any such Security Device shall have no duty,
liability or obligation to perform any of the obligations of Lessee under this
Lease, but that in the event of Lessor's default with respect to any such
obligation, Lessee will give any Lender whose name and address has been
furnished Lessee in writing for such purpose notice of Lessor's default and
allow such Lender thirty (30) days following receipt of such notice, the cure of
said default before invoking any remedies Lessee may have by reason thereof. If
any Lender shall elect to have this Lease and/or any Option granted hereby
superior to the lien of its Security Device and shall give written notice
thereof to Lessee, this Lease and such Options shall be deemed prior to such
Security Device notwithstanding the relative dates of the documentation or
recordation thereof.

        30.2 ATTORNMENT. Subject to the non-disturbance provision of Paragraph
30.3, Lessee agrees to attorn to a Lender or any other party who acquires
ownership of the Premises by reason of a foreclosure of a Security Device, and
that in the event of such foreclosure such new owner shall not: (i) be liable
for any act or omission of any prior lessor or with respect to events occurring
prior to acquisition of ownership, (ii) be subject to any offsets or defenses
which Lessee might have against any prior lessor, or (iii) be bound by
prepayment of more than one month's rent.

        30.3 NON-DISTURBANCE. With respect to Security Devices entered into by
Lessor after the execution of this Lease, Lessee's subordination of this Lease
shall be subject to receiving assurance ("NON-DISTURBANCE AGREEMENT") from the
Lender that Lessee's possession and this Lease, including any option to extend
the term hereof, will not be disturbed so long as Lessee is not in Breach hereof
and attorns to the record owner of the Premises.

        30.4 SELF-EXECUTING. The agreements contained in this Paragraph 30 shall
be effective without the execution of any further documents; provided however,
that, upon written request from Lessor or a Lender or Lessee in connection with
a sale, financing or refinancing of the Premises, Lessee and Lessor shall
execute such further writings as may be reasonably required to separately
document any such subordination or non-subordination, attornment and
non-disturbance agreement as is provided for herein.

31.     ATTORNEY'S FEES. If any Party or Broker brings an action or proceeding
to enforce the terms hereof or declare rights hereunder, the Prevailing Party
(as hereafter defined) or Broker in any such proceeding, action, or appeal
thereon, shall be entitled to reasonable attorney's fees. Such fees may be
awarded in the same suit or recovered in a separate suit, whether or not such
action or proceeding is pursued to decision or judgment. The term "PREVAILING
PARTY" shall include, without limitation, a Party or Broker who substantially
obtains or defeats the relief sought, as the case may be, whether by compromise,
settlement, judgment, or the abandonment by the other Party or Broker of its
claim or defense. The attorney's fee award shall not be computed in accordance
with any court fee schedule, but shall be such as to fully reimburse all
attorney's fees reasonably incurred. Lessor shall be entitled to attorney's
fees, costs and expenses incurred in the preparation and service of notices of
Default and consultations in connection therewith only if a legal action is
subsequently commenced in connection with such Default or resulting Breach.

32.     LESSOR'S ACCESS; SHOWING PREMISES; REPAIRS. Lessor and Lessor's agents
shall have the right to enter the Premises at any time, in the case of
emergency, and otherwise at reasonable times for the purpose of showing the same
to prospective purchasers, lenders, or lessees, and making such alterations,
repairs, improvements or additions to the Premises or to the building of which
they are a part, as Lessor may reasonably deem necessary. Lessor may at any time
place on or about the Premises or building any ordinary "For Sale" signs and
Lessor may at any time during the last one hundred twenty (120) days of the term
hereof place on or about the Premises any ordinary "For Lease" signs. All such
activities of Lessor shall be without abatement of rent or liability to Lessee.

33.     AUCTIONS. Lessee shall not conduct, nor permit to be conducted, either
voluntarily or involuntarily, any auction upon the Premises without first having
obtained Lessor's prior written consent. Notwithstanding anything to the
contrary in this Lease, Lessor shall not be obligated to exercise any standard
reasonableness in determining whether to grant such consent.

34.     SIGNS. Lessee shall not place any sign upon the Premises, except that
Lessee may, with Lessor's prior written consent, install (but not on the roof)
such signs as are reasonably required to advertise Lessee's own business. The
installation of any sign on the Premises by or for Lessee shall be subject to:
provisions of Paragraph 7 (Maintenance, Repairs, Utility Installations, Trade
Fixtures and Alterations). Unless otherwise expressly agreed herein, Lessor
reserves all rights to the use of the roof and the right to install, and all
revenues from the installation of, such advertising signs on the Premises,
including the roof, as do not unreasonably interfere with the conduct of
Lessee's business.

35.     TERMINATION; MERGER. Unless specifically stated otherwise in writing by
Lessor, the voluntary or other surrender of this Lease by Lessee, the mutual
termination or cancellation hereof, or a termination hereof by Lessor for Breach
by Lessee, shall automatically terminate any sublease or lesser estate in the
Premises; provided, however, Lessor shall, in the event of any such surrender,
termination or cancellation, have the option to continue any one or all of any
existing subtenancies. Lessor's failure within ten (10) days following any such
event to make a written election to the contrary by written notice to the holder
of any lesser interest, shall constitute Lessor's election to have such event
constitute the termination of such interest.

36.     CONSENTS.

               (a) Except for Paragraph 33 hereof (Auctions) or as otherwise
provided herein, wherever in this Lease the consent of a Party is required to an
act by or for the other Party, such consent shall not be unreasonably withheld
or delayed. Lessor's actual reasonable costs and expenses (including but not
limited to architects', attorneys', engineers' or other consultants' fees)
incurred in the consideration of, or response to, a request by Lessee for a
Lessor consent pertaining to this Lease for the Premises, including but not
limited to consents to an assignment, a subletting or the presence or use of a
Hazardous Substance, practice or storage tank, shall be paid by Lessee to Lessor
upon receipt of an invoice and supporting documentation therefor. Subject to
Paragraph 12.2(e) (applicable to assignment or subletting), Lessor's consent to
any act, assignment of this Lease or subletting of the Premises by Lessee shall
not constitute an acknowledgement that no Default or Breach by Lessee of this
Lease exists, nor shall such consent be deemed a waiver of any then existing
Default or Breach, except as may be otherwise specifically stated in writing by
Lessor at the time of such consent.

               (b) The failure to specify herein any particular condition to
Lessor's consent shall not preclude the imposition by Lessor at the time of
consent of such further or other conditions as are then reasonable with
reference to the particular matter for which consent is being given.

37.     GUARANTOR.

        37.1 If there are to be any Guarantors of this Lease per Paragraph 1.11,
the form of the guaranty to be executed by each such Guarantor shall be the form
most recently published by the American Industrial Real Estate Association, and
each said Guarantor shall have the same obligations as Lessor under this Lease,
including but not limited to the obligation to provide the Tenancy Statement and
information called for by Paragraph 16.

        37.2 It shall constitute a default of the Lessee under this Lease if any
such Guarantor fails or refuses, upon reasonable request by Lessor to give (a)
evidence of the due execution of the guaranty called for by this Lease,
including the authority of the Guarantor (and of the party signing on
Guarantor's behalf) to obligate such Guarantor on said guaranty, and including
in the case of a corporate Guarantor, a certified copy of a resolution of its
board of directors authorizing the making of such guaranty, together with a
certificate of incumbency showing the signatures of the persons authorized to
sign on its behalf, (b) current financial statements of Guarantor as may from
time to time be requested by Lessor, (c) a Tenancy Statement, or (d) written
confirmation that the guaranty is still in effect.


<PAGE>   22
38.     QUIET POSSESSION. Upon payment by Lessee of the rent for the Premises
and the observance and performance of all of the covenants, conditions and
provisions on Lessee's part to be observed and performed under this Lease,
Lessee shall have quiet possession of the Premises for the entire term hereof
subject to all of the provisions of this Lease.

39.     OPTIONS.

        39.1 DEFINITION. As used in this Paragraph 39 the word "OPTION" has the
following meanings: (a) the right to extend the term of this Lease or to renew
this Lease or to extend or renew any lease that Lessee has on other property of
Lessor; (b) the right of first refusal to lease the Premises or the right of
first offer to lease the Premises or the right of first refusal to lease other
property of Lessor or the right of first offer to lease other property of
Lessor; (c) the right to purchase the Premises, or the right of first refusal to
purchase the Premises, or the right of first offer to purchase the Premises, or
the right to purchase other property of Lessor, or the right of first refusal to
purchase other property of Lessor, or the right of first offer to purchase other
property of Lessor.

        39.2 Deleted.

        39.3 MULTIPLE OPTIONS. In the event that Lessee has any multiple Options
to extend or renew this Lease, a later option cannot be exercised unless the
prior Options to extend or review this Lease have been validly exercised.

        39.4 EFFECT OF DEFAULT ON OPTIONS.

               (a) Lessee shall have no right to exercise an Option,
notwithstanding any provision in the grant of Option to the contrary: (i) during
the period commencing with the giving of any notice of Default under Paragraph
13.1 and continuing until the noticed Default is cured, or (ii) during the
period of time any monetary obligation due Lessor from Lessee is unpaid, or
(iii) during the time Lessee is in Breach of this Lease, or (iv) in the event
that Lessor has given to Lessee three (3) or more notices of Default under
Paragraph 13.1, whether or not the Defaults are cured, during the twelve (12)
month period immediately preceding the exercise of the Option.

               (b) The period of time within which an Option may be exercised
shall not be extended or enlarged by reason of Lessee's inability to exercise an
Option because of the provisions of Paragraph 39.4(a).

               (c) All rights of Lessee under the provision of an Option shall
terminate and be of no further force or effect, notwithstanding Lessee's due and
timely exercise of the Option, if, after such exercise and during the term of
this Lease, (i) Lessee fails to pay to Lessor a monetary obligation of Lessee
for a period of thirty (30) days after such obligation becomes due or (ii)
Lessor gives to Lessee three or more notices of Default under Paragraph 13.1
during any twelve month period that remain uncured.

40.     MULTIPLE BUILDINGS. If the premises are part of a group of buildings
controlled by Lessor, Lessee agrees that it will abide by, keep and observe all
reasonable rules and regulations which Lessor may make from time to time for the
management, safety, care, and cleanliness of the grounds, the parking and
unloading of vehicles and the preservation of good order, as well as for the
convenience of other occupants or tenants of such other buildings and their
invitees, and that Lessee will pay its fair share of common expenses incurred in
connection therewith.

41.     SECURITY MEASURES. Lessee hereby acknowledges that the rental payable to
Lessor hereunder does not include the cost of guard service or other security
measures, and that Lessor shall have no obligation whatsoever to provide same.
Lessee assumes all responsibility for the protection of the Premises, Lessee,
its agents and invitees, and their property from the acts of third parties.

42.     RESERVATIONS. Lessor reserves to itself the right, from time to time, to
grant, without the consent or joinder of Lessee, such easements, rights, and
dedications that Lessor deems necessary, and to cause the recordation of parcel
maps and restrictions, so long as such easements, rights, dedications, maps, and
restrictions do not unreasonably interfere with the use of the Premises by
Lessee. Lessee agrees to sign any documents reasonably requested by Lessor to
effectuate any such easement rights, dedication, map or restrictions.

43.     PERFORMANCE UNDER PROTEST. If at any time a dispute shall arise as to
any amount or sum of money to be paid by one Party to the other under the
provisions hereof, the Party against whom the obligation to pay the money is
asserted shall have the right to make payment "under protest" and such payment
shall not be regarded as voluntary payment and there shall survive the right on
the part of said Party to institute suit for recovery of such sum. If it shall
be adjudged that there was no legal obligation on the part of said Party to pay
such sum or any part thereof, said Party shall be entitled to recover such sum
or so much thereof as it was not legally required to pay under the provisions of
this Lease.

44.     AUTHORITY. If either Party hereto is a corporation, trust, or general or
limited partnership, each individual executing this lease on behalf of such
entity represents and warrants that he or she is duly authorized to execute and
deliver this Lease on its behalf. If Lessee is a corporation, trust or
partnership, Lessee shall, within thirty (30) days after request by Lessor,
deliver to Lessor evidence satisfactory to Lessor of such authority.

45.     CONFLICT. Any conflict between the printed provisions of this Lease and
the typewritten or handwritten provisions shall be controlled by the typewritten
or handwritten provisions.

46.     OFFER. Preparation of this Lease by Lessor or Lessor's agent and
submission of same to Lessee shall not be deemed an offer to lease to Lessee.
This Lease is not intended to be binding until executed by all Parties hereto.

47.     AMENDMENTS. This Lease may be modified only in writing, signed by the
parties in interest at the time of the modification. The parties shall amend
this Lease from time to time to reflect any adjustments that are made to the
Base Rent or other rent payable under this Lease. As long as they do not
materially change Lessee's obligations hereunder, Lessee agrees to make such
reasonable non-monetary modifications to this Lease as may be reasonably
required by an institutional, insurance company, or pension plan Lender in
connection with the obtaining of normal financing or refinancing of the property
of which the Premises are a part.

48.     MULTIPLE PARTIES. Except as otherwise expressly provided herein, if more
than one person or entity is named herein as either Lessor or Lessee, the
obligations of such multiple parties shall be the joint and several
responsibility of all persons or entities named herein as such Lessor or Lessee.

LESSOR AND LESSEE HAVE CAREFULLY READ AND REVIEWED THIS LEASE AND EACH TERM AND
PROVISION CONTAINED HEREIN, AND BY THE EXECUTION OF THIS LEASE, SHOW THEIR
INFORMED AND VOLUNTARY CONSENT THERETO. THE PARTIES HEREBY AGREE THAT, AT THE
TIME THIS LEASE IS EXECUTED, THE TERMS OF THIS LEASE ARE COMMERCIALLY REASONABLE
AND EFFECTUATE THE INTENT AND PURPOSE OF LESSOR AND LESSEE WITH RESPECT TO THE
PREMISES.


        IF THIS LEASE HAS BEEN FILED IN, IT HAS BEEN PREPARED FOR SUBMISSION TO
        YOUR ATTORNEY FOR HIS APPROVAL. FURTHER, EXPERTS SHOULD BE CONSULTED TO
        EVALUATE THE CONDITION OF THE PROPERTY AS TO THE POSSIBLE PRESENCE OF
        ASBESTOS, STORAGE TANKS OR HAZARDOUS SUBSTANCES. NO REPRESENTATION OR
        RECOMMENDATION IS MADE BY THE AMERICAN INDUSTRIAL REAL ESTATE
        ASSOCIATION OR BY THE REAL ESTATE BROKER(S) OR THEIR AGENTS OR EMPLOYEES
        AS TO THE LEGAL SUFFICIENCY, LEGAL EFFECT, OR TAX CONSEQUENCES OF THIS
        LEASE OR THE TRANSACTION TO WHICH IT RELATES; THE PARTIES SHALL RELY
        SOLELY UPON THE ADVICE OF THEIR OWN COUNSEL AS TO THE LEGAL AND TAX
        CONSEQUENCES OF THIS LEASE. IF THE SUBJECT PROPERTY IS LOCATED IN A
        STATE OTHER THAN CALIFORNIA, AN ATTORNEY FROM THE STATE WHERE THE
        PROPERTY IS LOCATED SHOULD BE CONSULTED.


The parties hereto have executed this Lease at the place on the dates specified
above to their respective signatures.


Executed at Palo Alto                          Executed at Palo Alto
on March 17, 1993                              on March 17, 1993

by LESSOR:                                     by LESSEE:


MV 440, INC.,                                  QUICKTURN SYSTEMS, INC.
- -------------------------------                -------------------------------

a California corporation                       a California corporation
- -------------------------------                -------------------------------


By:                                            By:
- -------------------------------                   ----------------------------
Name Printed:  William J. Hurwick              Name Printed: Dennis Favero

Title:                                         Title:       VP/CFO
      -------------------------                      -------------------------


<PAGE>   23
NOTICES TO BE SENT TO:                         By: _____________________________
Name Printed: William J. Hurwick/WJH Group     Name Printed: ___________________
Title:   Cornish & Carey Commercial            Title: __________________________
Address: 400 Hamilton Avenue                   Address: ________________________
         Palo Alto, CA  94301                           ________________________

Tel. No. (415) 688-8550 Fax No. (415) 321-0719 Tel. No. (____) ________ Fax. No.
(___) _________


<PAGE>   24
   
                                                      Attachment C (Exhibit B-1)
    


       ADDENDUM TO STANDARD INDUSTRIAL/COMMERCIAL SINGLE-TENANT LEASE-NET
                              DATED MARCH 17, 1993
                   BY AND BETWEEN MV 440, INC. ("LESSOR") AND
          QUICKTURN SYSTEMS, INC. ("LESSEE"), A CALIFORNIA CORPORATION



49. Payment of Direct           As additional rent during the term hereof,
    Expenses:                   Lessee shall pay to Lessor direct expenses
                                ("Direct Expenses") incurred by Lessor in the
                                operation and maintenance of the Premises
                                (including all direct costs of management for
                                the Project, which shall be fixed at $1,000.00
                                per month for the term of this Lease), real
                                property taxes, insurance premiums, maintenance
                                contracts for the repair and maintenance of the
                                heating, ventilating and air-conditioning system
                                and landscaping.

                                Lessor estimates that Direct Expenses for the
                                Premises (including the costs of management for
                                the Project applicable to the Premises) during
                                the first calendar year of the Lease term
                                hereunder will be the equivalent of $3,878.81
                                per month. Accordingly, during the first year of
                                the Lease term, Lessee shall pay to Lessor
                                $3,878.81 per month as additional rent
                                attributable to Direct Expenses. At the
                                commencement of each year of the term hereof,
                                Lessor will notify Lessee of the monthly amount
                                to be paid for Direct Expenses for that year.
                                Lessee shall have the right to audit Lessor's
                                books and records with respect to Direct
                                Expenses within thirty (30) days after receipt
                                from Lessor of the new calculation of Direct
                                Expenses. If the audit discloses that an
                                overpayment was required of Lessee, Lessor, as
                                soon as reasonably practical, shall refund the
                                excess amount overpaid by Lessee. If the audit
                                discloses that Lessee has underpaid the Direct
                                Expenses, Lessee shall pay the excess amount
                                owing to Lessor as soon as reasonably practical.

50. Roof and HVAC               Lessor shall be responsible for all roof
    Warranty; Building          maintenance (other than maintenance needed due
    Systems:                    to Lessee's negligence) for the period from May
                                1, 1993 through April 30, 1994. Lessor also
                                shall warrant the HVAC system to be in working
                                order and be responsible for all
                                parts/components replacement for the period from
                                May 1, 1993 through April 30, 1994.
                                Notwithstanding the foregoing, as of the
                                Commencement Date, the Premises shall be in
                                broom-clean condition, and all utilities, HVAC
                                systems, plumbing, electrical (including,
                                without limitation, outlets and light fixtures)
                                and fire and landscape sprinkler systems
                                ("Building Systems") shall be in good working
                                order and repair.


Lessor's                                           Lessee's
Initials:  ____                                    Initials:  _____


<PAGE>   25
   
                                                      Attachment D (Exhibit B-1)
    

                            SECOND ADDENDUM TO LEASE



        THIS SECOND ADDENDUM TO LEASE ("Addendum") is dated for reference
purposes only as of March 17, 1993, and is made between MV 440, INC., a
California corporation ("Lessor") and QUICKTURN SYSTEMS, INC., a California
corporation ("Lessee"), to be a part of that certain Standard
Industrial/Commercial Single-Tenant Lease-Net of even date herewith between
Lessor and Lessee (herein the "Lease Form") concerning 29,837 square feet of
space (the "Premises") within two certain buildings ("Buildings") located at 440
Clyde Avenue, Mountain View, California.

        1. LESSEE IMPROVEMENTS: The parties acknowledge that, at Lessee's sole
cost and expense, Lessee shall construct certain non-structural improvements
(the "Lessee Improvements") described in plans and specifications previously
approved by Lessor. The Lessee Improvements shall he constructed in accordance
with the plans and specifications and in a good and workmanlike manner.

        2. ACCEPTANCE OF PREMISES: Notwithstanding anything to the contrary in
the Lease, Lessee's acceptance of the Premises or Lessee's submission of a
"punch list" to Lessor not later than sixty (60) days after the Commencement
Date shall not be deemed a waiver of Lessee's right to have latent defects in
the Premises (excluding the Lessee Improvements) repaired at Lessor's sole
expense. Lessee shall give notice to Lessor whenever any latent defect (i.e.,
any defect that could not reasonably have been discovered by Lessee) becomes
reasonably apparent, and Lessor shall repair such defect as soon as practicable.
Lessor also hereby assigns to Lessee all warranties with respect to the Premises
which would reduce Lessee's maintenance obligations hereunder and shall
cooperate with Lessee to enforce all such warranties.

        3. COMPLIANCE WITH LAWS: At the Commencement Date, the Premises and the
project in which the Premises are located ("Project") shall conform to all
underwriter's requirements and all rules, regulations, statutes, ordinances,
laws and building codes (collectively "Applicable Laws") applicable thereto,
including, without limitation, all Applicable Laws governing Hazardous
Materials, as defined in the Lease. Lessee shall not be required to construct or
to pay the cost of complying with any underwriters requirements or Applicable
Laws requiring construction of improvements in the Premises which are properly
capitalized under generally accepted accounting principles, unless such
compliance is necessitated solely because of Lessee's particular use of the
Premises. Lessor represents and warrants that, to the best of its knowledge,
there are no covenants, conditions, restrictions or encumbrances ("CC&R's")
affecting the Project.

        4. USE OF PREMISES: If the Premises should become not reasonably
suitable for Lessee's use as a consequence of (i) cessation of utilities or
other services; (ii) interference with access to the Premises; or (iii) legal
restrictions, so long as items (i) through (iii) do not result from the fault
of, or are beyond the control of, Lessor and Lessee, or the presence of any
Hazardous Material which does not result from Lessee's use, storage or disposal
of such Hazardous Material in or about the Premises, and in any of the foregoing
cases the interference with Lessee's use of the Premises persists for one
hundred twenty (120) continuous days, then Lessee shall be entitled to terminate
this Lease.


<PAGE>   26
        5. ALTERATIONS, ADDITIONS AND IMPROVEMENTS: Notwithstanding anything to
the contrary in the Lease:

               A. If Lessor has not consented to Lessee's request to construct
alterations, utility installations, additions and improvements ("Alterations")
in the Premises within three (3) business days after the date of Lessee's
written request therefor, Lessor shall be deemed to have consented to the
Alteration.

               B. Lessor shall have no lien or other interest whatsoever in any
item of Lessee's trade fixtures and personal property located in the Premises,
and shall execute any document reasonably necessary to waive any lien or
interest in Lessee's trade fixtures and personal property located at the
Premises.

               C. Upon request, Lessor shall advise Lessee in writing whether it
reserves the right to require Lessee to remove any Alterations from the Premises
upon termination of the Lease.

               D. Alterations and Lessee's trade fixtures, furniture, equipment
and other personal property installed in the Premises ("Lessee's Property")
shall at all times be and remain Lessee's Property, and Lessee shall be entitled
to all depreciation, amortization and other tax benefits with respect thereto.
Except for Alterations which cannot be removed without structural injury to the
Premises, at any time Lessee may remove Lessee's Property from the Premises,
provided Lessee repairs all damage caused by such removal.

        6. EXPENSES: Notwithstanding anything to the contrary in the Lease, in
no event shall Lessee have any obligation to perform, to pay directly, or to
reimburse Lessor for, all or any portion of the following repairs, maintenance,
improvements, replacements, premiums, claims, losses, fees, commissions,
charges, disbursements, attorneys' fees, experts' fees, costs and expenses
(collectively "Costs"):

               A. LOSSES CAUSED BY OTHERS, CONSTRUCTION DEFECTS AND FAILURE TO
BUILD IN COMPLIANCE WITH LAW: Costs to correct any construction defect in the
Premises (other than in the Lessee Improvements) or the Project, or Costs
arising out of a failure to construct the Building or common areas in accordance
with all Applicable Laws and private restrictions.

               B. CASUALTIES, CONDEMNATIONS AND INSURANCE COSTS: Costs
occasioned by fire, acts of God, or other casualties or by the exercise of the
power of eminent domain or Costs for insurance coverage not customarily paid by
tenants of similar projects in the vicinity of the Premises and/or co-insurance
payments.

               C. CAPITAL LEASES AND CAPITAL IMPROVEMENTS: Lease payments and
other Direct Expenses to acquire, install or replace capital machinery and
equipment (such as air conditioners, elevators, and the like), and Costs which
would properly be capitalized under generally accepted accounting principles and
which relate to repairs, alterations, improvements, equipment and tools to the
extent that Lessee's share of the total Cost of such capital item exceed (i) the
reduction in other expenses payable by Lessee under the Lease which results from
the capital repair or installation of the capital item; or (ii) in any year, the
annual amortized cost of 


                                       2


<PAGE>   27
the item based on its useful life determined in accordance with generally
accepted accounting principles.

               D. STRUCTURAL REPAIRS: Costs relating to the replacement of the
structural elements of the Building and Project.

               E. REIMBURSABLE EXPENSES: Costs for which Lessor has a right of
reimbursement from others or Costs which Lessee pays directly to a third person.

               F. RESERVES: Depreciation, amortization or other expense
reserves.

               G. MORTGAGES: Interest, charges and fees incurred on debt,
payments on mortgagees and rent under ground leases.

               H. HAZARDOUS MATERIALS: Costs incurred to investigate the
presence of any Hazardous Material, Costs to respond to any claim of Hazardous
Material contamination or damage, Costs to remove any Hazardous Material from
the Project or to remediate any Hazardous Material contamination and any
judgments or other Costs incurred in connection with any Hazardous Material
exposure or release, except to the extent the Cost is caused by the storage, use
or disposal of the Hazardous Material in question by Lessee. (Lessee shall have
no liability to Lessor or any of its officers, agents, partners or tenants as a
consequence of the presence of Hazardous Materials in or about the Premises that
were not used, stored, treated or disposed of in or about the Premises in
violation of Applicable Law by Lessee or Lessee's agents, employees or
contractors.)

               I. REAL ESTATE TAXES: Taxes, assessments, all other governmental
levies, and any increases in the foregoing occasioned by or relating to a
voluntary or involuntary change of ownership or other conveyance of the
Premises.

        7. SURRENDER: Notwithstanding anything to the contrary in the Lease,
Lessee's obligations to surrender the Premises shall be fulfilled if Lessee
surrenders possession of the Premises in the condition existing at the
commencement of the Lease, except for ordinary wear and tear, acts of God,
casualties, condemnation, Hazardous Materials (other than those stored, used or
disposed of by Lessee in or about the Premises), and Alterations concerning
which Lessor has not reserved the right to require removal, or if it has
reserved the right the require removal, it does not elect to have Lessee remove
from the Premises at the end of the term.

        8. INDEMNITY: Notwithstanding anything to the contrary in the Lease,
Lessor shall not be released from, and shall indemnify, defend, protect, and
hold harmless Lessee from, all damages, liabilities, judgments, actions, claims,
attorneys' fees, consultants' fees, payments, costs and expenses arising from
the negligence or willful misconduct of Lessor or its employees, agents,
contractors or invitees, Lessor's violation of Applicable Law, or a breach of
Lessor's obligations or representations under this Lease.

        9. ASSIGNMENT AND SUBLETTING: Lessee may, without Lessor's prior written
consent, sublet the Premises or assign the Lease to: (i) a subsidiary,
affiliate, franchise, division or corporation controlled or under common control
with Lessee; (ii) a successor corporation related to Lessee by merger,
consolidation, non-bankruptcy reorganization, or government action; or 


                                       3


<PAGE>   28
(iii) a purchaser of substantially all of Lessee's assets located at the
Premises, so long as the purchaser, at the time of the purchase, has a net worth
substantially the same as that of Lessee as of the date of its execution of the
Lease. For the purpose of the Lease, sale of Lessee's capital stock through any
public exchange shall not be deemed an assignment, subletting, or any other
transfer of the Lease or the Premises.

        10. RULES AND REGULATIONS: Lessor shall not require Lessee's compliance
with any rule or regulation applicable to the Premises that unreasonably
interferes with Lessee's use of the Premises or materially changes Lessee's
rights under the Lease.

        11. DEFAULT AND LATE CHARGE: Notwithstanding anything to the contrary in
the Lease, Lessee shall not be deemed to be in default, Lessor shall not be
entitled to cure any breach by Lessee under the Lease, nor shall any late charge
or interest be imposed, on account of (i) Lessee's failure to pay money to
Lessor, unless Lessee's failure to pay continues for five (5) days after
Lessee's actual receipt of written notice of delinquency; or (ii) Lessee's
failure to perform any covenant of this Lease (other than a covenant to pay
money to Lessor), unless Lessee's failure to perform such covenant continues
after Lessee's actual receipt of written notice for a period of thirty (30) days
or such longer time as may reasonably be required to cure the default. Further,
Lessee shall not be in default of this Lease solely because (a) it abandons or
vacates the Premises; or (b) as a consequence of the filing of an involuntary
bankruptcy petition, the appointment of a receiver, the attachment of any
interest in the Lease or of Lessee's other assets or the exercise by any third
party of any other remedy with respect to Lessee, Lessee's interest in this
Lease or Lessee's other assets, unless the petition, receiver, attachment or
other remedy is not discharged within sixty (60) days.

        12. LESSOR'S ENTRY: Notwithstanding anything to the contrary in the
Lease, Lessor and Lessor's agents, except in the case of emergency, shall
provide Lessee with twenty-four (24) hours' notice prior to entry of the
Premises. Such entry by Lessor and Lessor's agents shall not impair Lessee's
operations more than reasonably necessary, and Lessor and Lessor's agents shall
be accompanied at all times by an employee of Lessor.

        13. APPROVALS: Whenever the Lease requires an approval, consent,
designation, determination or judgment by either Lessor or Lessee, such
approval. consent, designation, determination or judgment (including, without
limiting the generality of the foregoing, those required in connection with
assignment and subletting) shall not be unreasonably withheld or delayed and in
exercising any right or remedy hereunder, each party shall at all times act
reasonably and in good faith.

        14. REASONABLE EXPENDITURES: Any expenditure by a party permitted or
required under the Lease, for which such party is entitled to demand and does
demand reimbursement from the other party, shall be limited to the fair market
value of the goods and services involved, shall be reasonably incurred, and
shall be substantiated by documentary evidence available for inspection and
review by the other party or its representative during normal business hours.


                                       4


<PAGE>   29
        15. OPTION TO EXTEND: Notwithstanding anything to the contrary in the
Lease:

               A. GRANT OF OPTION: Lessor hereby grants to Lessee one option(s)
(the "Option(s)" to extend the term of the Lease, each for an additional term
five (5) years, commencing on May 1, 2000, upon the terms and conditions set
forth in this Paragraph 15.

               B. EXERCISE OF OPTION: Lessee shall exercise such option by
giving Lessor written notice of its intention not less than twelve (12) months
prior to the expiration of the then-existing term of this Lease.

               C. EXTENDED TERM RENT: If this Option is exercised, the basic
rent for the Premises shall be ninety-five percent (95%) of the then-current
fair market monthly rent ("Fair Market Rent") for the Premises as of the
commencement date of the applicable extended term, as determined by the
agreement of the parties, or, if the parties cannot agree, then the Fair Market
Rent shall be determined by three appraisers selected and governed by the Rules
of the American Arbitration Association. All other terms and conditions
contained in the Lease and this Addendum, as the same may be amended from time
to time by the parties in accordance with the provisions of the Lease, shall
remain in full force and effect and shall apply during the Option term.

               D. RESCISSION: Notwithstanding anything to the contrary contained
in this paragraph, if the basic rent during the Option period is determined by
appraisal and if Lessee does not, in its discretion, approve the rental amount
established by such appraisal, Lessee may rescind its exercise of the Option not
later than six (6) months prior to the last day of the Term by giving Lessor
written notice of such election to rescind. If Lessee timely rescinds its
exercise of the Option, then Lessee shall pay all costs and expenses of the
appraisal.

        16. DAMAGE AND DESTRUCTION OF PREMISES: Notwithstanding anything to the
contrary contained in the Lease:

               A. Lessor shall not have the right to terminate the Lease if
damage to or destruction of the Premises or the building in which the Premises
is located, or both, results from a casualty ordinarily covered by insurance
required to be carried by Lessor under the Lease.

               B. In the event of damage to the Premises which is not required
to be covered by insurance, and is not covered by insurance actually carried,
Lessor shall not have the right to terminate the Lease (i) if the damage is
relatively minor (e.g., repair or restoration would take fewer than sixty (60)
days or it would cost less than ten percent (10%) of the replacement cost of the
Premises) or (ii) if Lessee agrees to pay the cost of repair in excess of ten
percent (10%) of the then replacement cost of the Premises.

               C. If the Premises are damaged by any peril ant Lessor does not
elect to terminate the Lease or is not entitled to terminate the Lease pursuant
to its terms, then as soon as reasonably practicable, Lessor shall furnish
Lessee with a written opinion of Lessor's architect or construction consultant
as to when the restoration work required of Lessor may be completed. Lessee
shall have the option to terminate the Lease in the event any of the following
occurs, which option may be exercised by delivery to Lessor of a written notice
of election to terminate within thirty (30) days after Lessee receives from
Lessor the estimate of the time needed to 


                                       5


<PAGE>   30
complete such restoration: (i) the Premises, with reasonable diligence, cannot
be fully repaired by Lessor within one hundred twenty (120) days after the
damage or destruction; or (ii) if the Premises are damaged by any peril within
twelve (12) months of the last day of term, and cannot be substantially restored
within sixty (60) days after the date of such damage.

               D. If the Lease is not terminated by Lessor or Lessee as provided
herein, Lesser shall restore the Premises and all tenant improvements installed
by Lessor to the condition in which they existed immediately prior to the
casualty.

        17. TAXES AND ASSESSMENTS: Notwithstanding anything to the contrary
contained in the Lease, if any assessments are levied against the Project or
Premises, Lessor may elect to either pay the assessment in full or allow the
assessment to go to bond and pay it in installments. In either case, however,
Lessee shall only be obligated to pay to Lessor with regard to such assessment,
a sum equal to that which would have been payable by Lessee with respect to
installments of principal and interest which would have become due during the
Lease term had Lessor allowed the assessment to go to bond.

        18. LESSEE'S RIGHT TO BRING TAX PROCEEDING: Lessee shall have the right
to contest, in good faith, the validity or the amount of any tax or assessment
levied against the entire demised premises by such appellate or other
proceedings as may be appropriate in the jurisdiction, and may defer payment of
such obligation, pay same under protest, or take such steps as Lessee may deem
appropriate. Lessor shall cooperate in the institution and prosecution of any
such proceedings, including permitting the action to be brought in the name of
the Lessor, and will execute any documents required therefor. The expense of
such proceedings shall be borne by the Lessee and any refunds or rebates secured
shall belong to the Lessee.

        19. LESSOR'S REPRESENTATIONS: To the best of Lessor's knowledge: (i) the
Premises and the operations conducted thereon prior to the Commencement Date are
in compliance with all Applicable Laws regarding Hazardous Materials; and (ii)
handling, transportation, storage, treatment, disposal, release or use of
Hazardous Materials that has occurred on or about the Premises or the Project or
the soil, groundwater or surface water thereof prior to the Commencement Date
have been in compliance with all Applicable Laws. Also to the best of Lessor's
knowledge, no litigation has been brought or threatened, nor any settlements
reached with any governmental or private party, concerning the actual or alleged
presence or Hazardous Materials on or about the Premises or Project, or the
soil, groundwater or surface water thereof, nor has Lessor received any notice
of any violation or alleged violation of any Applicable Laws, pending claims or
pending investigations with respect to the presence of Hazardous Materials on or
about the Premises or Project, or the soil, groundwater or surface water
thereof. Lessee, its agents, employees, contractors, officers, directors,
shareholders, successors or assigns shall not be responsible for, and Lessor
shall indemnify, defend with counsel reasonably acceptable to Lessee and hold
Lessee harmless against, (i) any claim, remediation obligation, investigation
obligation, liability, cause of action, penalty, attorneys' fee, consultants'
cost, expense or damage owing or alleged to be owing with respect to any
Hazardous Materials present on or about the Premises or the Project, or the
soil, groundwater or surface water thereof; or (ii) the removal, investigation,
monitoring or remediation of any Hazardous Material present on or about the
Premises or the Project, or the soil, groundwater or surface water thereof with
respect to the Premises or the Project and caused by any source, including third
parties, other than Lessee, prior 


                                       6


<PAGE>   31
the Commencement Date. Lessor's representations under this Paragraph shall
survive the termination of the Lease.

        20. RECOGNITION: Lessor hereby represents that as of the date of both
parties' execution of the Lease, there is no loan, mortgage, deed of trust or
ground lease affecting the Premises or Project other than a first deed of trust
in favor of Home Savings & Loan ("Lender"). As a condition to Lessee's
obligations under this Lease, Lessor, within a reasonable period of time after
the date of execution of this Lease by both parties, but in any event not later
than ninety (90) days after that execution date, shall provide Lessee with a
recognition and non-disturbance agreement, in form reasonably satisfactory to
Lender, Lessor and Lessee, from Lender providing for recognition of Lessee's
interests hereunder in the event of a foreclosure of Lender's security interest.

        21. CAPITAL IMPROVEMENTS: Any replacement or repair by Lessor of any
items of a capital nature located within the Premises shall be of Substantially
the same quality as the item to be repaired or replaced.

        22. EXCESS RENTS: Notwithstanding anything to the contrary in the Lease,
if Lessee enters a permissible assignment or sublet pursuant to the Lease as
amended by Paragraph 9 of this Second Addendum, Lessee shall deliver to Lessor
fifty percent (50%) of any consideration payable to Lessee thereunder in excess
of the Rent payable by Lessee under the Lease, after deducting therefrom all
reasonable costs necessary to effect the assignment or sublet, including,
without limitation, brokerage and attorneys' fees, advertising costs,
redecorating costs, and the cost to Lessee of the installation of the Lessee
Improvements in the Premises.

        23. EFFECT OF SECOND ADDENDUM: In the event of any inconsistency between
this Second Addendum and/or the Exhibits hereto and the Lease Form, and any of
the other addenda, riders, exhibits, rules, regulations, covenants, attachments,
conditions, and restrictions referred to in the Lease Form and the Addendum, the
terms of this Second Addendum and the Exhibits hereto shall prevail. As used
herein, the term "Lease" shall mean the Lease Form, the Addendum, this Second
Addendum and all addenda, riders, exhibits, rules, regulations, covenants,
conditions and restrictions referred to in the Lease Form or this Addendum.


                                       7


<PAGE>   32
LESSOR:                                        LESSEE:

MV 440, INC.,                                  QUICKTURN SYSTEMS, INC.
a California corporation                       a California corporation


By: /s/ William J. Hurwick                     By: /s/ Dennis Favero
   -------------------------------                ------------------------------
Printed                                        Printed 
Name:  William J. Hurwick                      Name: Dennis Favero
     -----------------------------                  ----------------------------
Title:                                         Title: VP/CFO
      ----------------------------                   ---------------------------
Date:  3/17/93                                 Date:  3/17/93
     -------------------------------                ----------------------------


                                       8


<PAGE>   33
   
                                                      Attachment E (Exhibit B-2)
    

                   AMERICAN INDUSTRIAL REAL ESTATE ASSOCIATION



             STANDARD INDUSTRIAL/COMMERCIAL SINGLE-TENANT LEASE--NET
                (DO NOT USE THIS FORM FOR MULTI-TENANT PROPERTY)



1.      BASIC PROVISIONS ("BASIC PROVISIONS")

        1.1 PARTIES: This Lease ("LEASE"), dated for reference purposes only,
March 17, 1993, is made by and between MV 440, INC,. a California corporation
("LESSOR") and QUICKTURN SYSTEMS. INC., a California corporation ("LESSEE"),
(collectively the "PARTIES," or individually a "PARTY").

        1.2 PREMISES: That certain real property, including all improvements
therein or to be provided by Lessor under the terms of this Lease, and commonly
known by the street address of 440 Clyde Avenue, Mountain View, located in the
County of Santa Clara, State of California and generally described as (describe
briefly the nature of the property) that improved property referred to as 440
Clyde Avenue, also described as APN# 160-57-009, consisting of the second floor
of a two-story building, which is approximately 17,636 square feet of office/R&D
space ("PREMISES"). (See Paragraph 2 for further provisions.)

        1.3 TERM: six (6) years and four (4) months ("ORIGINAL TERM") commencing
January 1, 1994 ("COMMENCEMENT DATE"), and ending April 30, 2000 ("EXPIRATION
DATE"). (See Paragraph 3 for further provisions.)

        1.4 EARLY POSSESSION: N/A ("Early Possession Date") (See Paragraphs 3.2
and 3.3 for further provisions.)

        1.5 BASE RENT: $12,663.50 per month ("BASE RENT"), payable on the first
(1st) day of each month commencing January 1, 1994. (See Paragraph 4 for further
provisions.)

[X]     If this box is checked, there are provisions in this Lease for the Base 
Rent to be adjusted.

        1.6 BASE RENT PAID UPON EXECUTION: N/A

        1.7 SECURITY DEPOSIT: N/A ("SECURITY DEPOSIT"). (See Paragraph 5 for
further provisions.)

        1.8 PERMITTED USE: Office, administration, research and development and
all other uses legally permitted by City of Mountain View. (See Paragraph 6 for
further provisions.)

        1.9 INSURING PARTY: Lessor is the "INSURING PARTY" unless otherwise
stated herein. (See Paragraph 8 for further provisions.)

        1.10 REAL ESTATE BROKERS: The following real estate brokers
(collectively, the "BROKERS") and brokerage relationships exist in this
transaction and are consented to by the Parties (check applicable boxes):
Cornish & Carey Commercial represents

[X] Lessor exclusively ("LESSOR'S BROKER");   [ ] both LESSOR and LESSEE, and
    Wayne Mascia Associates represents

[X] Lessee exclusively ("LESSEE'S BROKER");   [ ] both LESSEE and LESSOR. (See
                                                  Paragraph 15 for further 
                                                  provisions.)


        1.11 GUARANTOR. The obligations of the Lessee under this Lease are to be
guaranteed by N/A ("GUARANTOR"). (See Paragraph 37 for further provisions.)

        1.12 ADDENDA. Attached hereto is an Addendum or Addenda consisting of
Paragraphs 49 through 50 and a Second Addendum to Lease all of which constitute
a part of this Lease.

2.      PREMISES.

        2.1 LETTING. Lessor hereby leases to Lessee, and Lessee hereby leases
from Lessor, the Premises, for the term, at the rental, and upon all of the
terms, covenants and conditions set forth in this Lease. Unless otherwise
provided herein, any statement of square footage set forth in this Lease, or
that may have been used in calculating rental, is an approximation which Lessor
and Lessee agree is reasonable and the rental based thereon is not subject to
revision whether or not the actual square footage is more or less.

        2.2 CONDITION. Lessor shall deliver the Premises to Lessee clean and
free of debris on the Commencement Date and warrants to Lessee that the existing
plumbing, fire sprinkler system, lighting, air conditioning, heating, roof and
loading doors, if any, in the Premises, other than those constructed by Lessee,
shall be in good operating condition on the Commencement Date. If a
non-compliance with said warranty exists as of the Commencement Date, Lessor
shall, except as otherwise provided in this Lease, promptly after receipt of
written notice from Lessee setting forth with specificity the nature and extent
of such non-compliance, rectify same at Lessor's expense. If Lessee does not
give Lessor written notice of a non-compliance with this warranty within thirty
(30) days after the Commencement Date, correction of that non-compliance shall
be the obligation of Lessee at Lessee's sole cost and expense.

        2.3 COMPLIANCE WITH COVENANTS, RESTRICTIONS AND BUILDING CODE. Lessor
warrants to Lessee that the improvements on the Premises comply with all
applicable covenants or restrictions of record and applicable building codes,
regulations and ordinances in effect on the Commencement Date. Said warranty
does not apply to the use to which Lessee will put the Premises or to any
Alterations or Utility Installations (as defined in Paragraph 7.3 (a)) made or
to be made by Lessee. If the Premises do not comply with said warranty, Lessor
shall, except as otherwise provided in this Lease, promptly after receipt of
written notice from Lessee setting forth with specificity the nature and extent
of such non-compliance, rectify the same at Lessor's expense. If Lessee does not
give Lessor written notice of a non-compliance with this warranty within six (6)
months following the Commencement Date, correction of that non-compliance shall
be the obligation of Lessee at Lessee's sole cost and expense.

        2.4 ACCEPTANCE OF PREMISES. Lessee hereby acknowledges: (a) that it has
been advised by the Brokers to satisfy itself with respect to the condition of
the Premises (including but not limited to the electrical and fire sprinkler
systems, security, environmental aspects, compliance with Applicable Law, as
defined in Paragraph 6.3) and the present and future suitability of the Premises
for Lessee's intended use, (b) that Lessee has made such investigation as it
deems necessary with reference to such matters and assumes all responsibility
therefor as the same relate to Lessee's occupancy of the Premises and/or the
term of this Lease, and (c) that neither Lessor, nor any of Lessor's agents, has
made any oral or written representations or warranties with respect to the said
matters other than as set forth in this Lease.

        2.5 LESSEE PRIOR OWNER/OCCUPANT. The warranties made by Lessor in this
Paragraph 2 shall be of no force or effect if immediately prior to the date set
forth in Paragraph 1.1 Lessee was the owner or occupant of the Premises. In such
event, Lessee shall, at Lessee's sole cost and expense, correct any
non-compliance of the Premises with said warranties.

3.      TERM.

        3.1 TERM. The Commencement Date, Expiration Date and Original Term of
this Lease are as specified in Paragraph 1.3.

        3.2 EARLY POSSESSION. If Lessee totally or partially occupies the
Premises prior to the Commencement Date, the obligation to pay Base Rent shall
be abated for the period of such early possession. All other terms of this
Lease, however, (including but not limited to the obligations to pay Real
Property Taxes and insurance premiums and to maintain the Premises) shall be in
effect during such period. Any such early possession shall not affect nor
advance the Expiration Date of the Original Term.

        3.3 DELAY IN POSSESSION. If for any reason Lessor cannot deliver
possession of the Premises to Lessee as agreed herein by the Early Possession
Date, if one is specified in Paragraph 1.4, or, if no Early Possession Date is
specified, by the Commencement Date, Lessor shall not be subject to any
liability therefor, nor shall such failure affect the validity of this Lease, or
the obligations of Lessee hereunder, or extend the term hereof, but in such
case, Lessee shall not, except as otherwise provided herein, be obligated to pay
rent or perform any other obligation of Lessee under the terms of this Lease
until Lessor delivers possession of the Premises to Lessee. If possession of the
Premises is not delivered to Lessee within sixty (60) days after the
Commencement Date, Lessee may, at its option, by notice in writing to Lessor
within ten (10) days thereafter, cancel this Lease, in which event the Parties
shall be discharged from all obligations hereunder; provided, however, that if
such written notice by Lessee is not received by Lessor within said ten (10) day
period, Lessee's right to cancel this Lease shall terminate and be of no further
force or effect. Except as may be otherwise provided, and regardless of when the
term actually commences, if possession is not tendered to Lessee when required
by this Lease and Lessee does 


<PAGE>   34
not terminate this Lease, as aforesaid, the period free of the obligation to pay
Base Rent, if any, that Lessee would otherwise have enjoyed shall run from the
date of delivery of possession and continue for a period equal to what Lessee
would otherwise have enjoyed under the terms hereof, but minus any days of delay
caused by the acts, changes or omissions of Lessee.

4.      RENT.

        4.1 BASE RENT. Lessee shall cause payment of Base Rent and other rent or
charges, as the same may be adjusted from time to time, to be received by Lessor
in lawful money of the United States, without offset or deduction, on or before
the day on which it is due under the terms of this Lease. Base Rent and all
other rent and charges for any period during the term hereof which is for less
than one (1) full calendar month shall be prorated based upon the actual number
of days of the calendar month involved. Payment of Base Rent and other charges
shall be made to Lessor at its address stated herein or to such other persons or
at such other addresses as Lessor may from time to time designate in writing to
Lessee.

5.      SECURITY DEPOSIT. Lessee shall deposit with Lessor upon execution hereof
the Security Deposit set forth in Paragraph 1.7 as security for Lessee's
faithful performance of Lessee's obligations under this Lease. If Lessee fails
to pay Base Rent or other rent or charges due hereunder, or otherwise Defaults
under this Lease (as defined in Paragraph 13.1), Lessor may use, apply or retain
all or any portion of said Security Deposit for the payment of any amount due
Lessor or to reimburse or compensate Lessor for any liability, cost, expense,
loss or damage (including attorneys' fees) which Lessor may suffer or incur by
reason thereof. If Lessor uses or applies all or any portion of said Security
Deposit, Lessee shall within ten (10) days after written request therefor
deposit moneys with Lessor sufficient to restore said Security Deposit to the
full amount required by this Lease. Any time the Base Rent increases during the
term of this Lease, Lessee shall, upon written request from Lessor, deposit
additional moneys with Lessor sufficient to maintain the same ratio between the
Security Deposit and the Base Rent as those amounts are specified in the Basic
Provisions. Lessor shall not be required to keep all or any part of the Security
Deposit separate from its general accounts. Lessor shall, at the expiration or
earlier termination of the term hereof and after Lessee has vacated the
Premises, return to Lessee (or, at Lessor's option, to the last assignee, if
any, of Lessee's interest herein), that portion of the Security Deposit not used
or applied by Lessor. Unless otherwise expressly agreed in writing by Lessor, no
part of the Security Deposit shall be considered to be held in trust, to bear
interest or other increment for its use, or to be prepayment for any moneys to
be paid by Lessee under this Lease.

6.      USE.

        6.1 USE. Lessee shall use and occupy the Premises only for the purposes
set forth in Paragraph 1.8, or any other use which is comparable thereto, and
for no other purpose. Lessee shall not use or permit the use of the Premises in
a manner that creates waste or a nuisance, or that unreasonably disturbs owners
and/or occupants of, or causes damage to, neighboring premises or properties.

        6.2 HAZARDOUS SUBSTANCES.

               (a) REPORTABLE USES REQUIRE CONSENT. The term "HAZARDOUS
SUBSTANCE" as used in this Lease shall mean any product, substance, chemical,
material or waste whose presence, nature, quantity and/or intensity of
existence, use, manufacture, disposal, transportation, spill, release or effect,
either by itself or in combination with other materials expected to be on the
Premises, is either: (i) potentially injurious to the public health, safety or
welfare, the environment or the Premises, (ii) regulated or monitored by any
governmental authority, or (iii) a basis for liability of Lessor to any
governmental agency or third party under any applicable statute or common law
theory. Hazardous Substance shall include, but not be limited to, hydrocarbons,
petroleum, gasoline, crude oil or any products, by-products or fractions
thereof. Lessee shall not engage in any activity in, on or about the Premises
which constitutes a Reportable Use (as hereinafter defined) of Hazardous
Substances without the express prior written consent of Lessor and compliance in
a timely manner (at Lessee's sole cost and expense) with all Applicable Law (as
defined in Paragraph 6.3). "REPORTABLE USE" shall mean (i) the installation or
use of any above or below ground storage tank, (ii) the generation, possession,
storage, use, transportation, or disposal of a Hazardous Substance that requires
a permit from, or with respect to which a report, notice, registration or
business plan is required to be filed with, any governmental authority.
Reportable Use shall also include Lessee's being responsible for the presence
in, on or about the Premises of a Hazardous Substance with respect to which any
Applicable Law requires that a notice be given to persons entering or occupying
the Premises or neighboring properties. Notwithstanding the foregoing, Lessee
may, without Lessor's prior consent, but in compliance with all Applicable Law,
use any ordinary and customary materials reasonably required to be used by
Lessee in the normal course of Lessee's business permitted on the Premises, so
long as such use is not a Reportable Use and does not expose the Premises or
neighboring properties to any meaningful risk of contamination or damage or
expose Lessor to any liability therefor. In addition, Lessor may (but without
any obligation to do so) condition its consent to the use or presence of any
Hazardous Substance, activity or storage tank by Lessee upon Lessee's giving
Lessor such additional assurances as Lessor, in its reasonable discretion, deems
necessary to protect itself, the public, the Premises and the environment
against damage, contamination or injury and/or liability therefrom or therefor,
including, but not limited to, the installation (and removal on or before Lease
expiration or earlier termination) of reasonably necessary protective
modifications to the Premises (such as concrete encasements) and/or the deposit
of an additional Security Deposit under Paragraph 5 hereof.

               (b) DUTY TO INFORM LESSOR. If Lessee knows, or has reasonable
cause to believe, that a Hazardous Substance, or a condition involving or
resulting from same, has come to be located in, on, under or about the Premises,
other than as previously consented to by Lessor, Lessee shall immediately give
written notice of such fact to Lessor. Lessee shall also immediately give Lessor
a copy of any statement, report, notice, registration, application, permit,
business plan, license, claim, action or proceeding given to, or received from,
any governmental authority or private party, or persons entering or occupying
the Premises, concerning the presence, spill, release, discharge of, or exposure
to, any Hazardous Substance or contamination in, on, or about the Premises
including but not limited to all such documents as may be involved in any
Reportable Uses involving the Premises.

               (c) INDEMNIFICATION. Lessee shall indemnify, protect, defend and
hold Lessor, its agents, employees, lenders and ground lessor, if any, and the
Premises, harmless from and against any and all loss of rents and/or damages,
liabilities, judgments, costs, claims, liens, expenses, penalties, permits and
attorney's and consultant's fees arising out of or involving any Hazardous
Substance or storage tank brought onto the Premises by or for Lessee or under
Lessee's control in violation of any Applicable Law. Lessee's obligations under
this Paragraph 6 shall include, but not be limited to, the effects of any
contamination or injury to person, property or the environment created or
suffered by Lessee, and the cost of investigation (including consultant's and
attorney's fees and testing), removal, remediation, restoration and/or abatement
thereof, or of any contamination therein involved, and shall survive the
expiration or earlier termination of this Lease. No termination, cancellation or
release agreement entered into by Lessor and Lessee shall release Lessee from
its obligations under this Lease with respect to Hazardous Substances or storage
tanks, unless specifically so agreed by Lessor in writing at the time of such
agreement.

        6.3 LESSEE'S COMPLIANCE WITH LAW. Except as otherwise provided in this
Lease, Lessee, shall, at Lessee's sole cost and expense, fully, diligently and
in a timely manner, comply with all "APPLICABLE LAW," which term is used in this
Lease to include all laws, rules, regulations, ordinances, directives,
covenants, easements and restrictions of record, permits, the requirements of
any applicable fire insurance underwriter or rating bureau, and the reasonable
recommendations of Lessor's engineers and/or consultants, relating in any manner
to the Premises (including but not limited to matters pertaining to (i)
industrial hygiene, (ii) environmental conditions on, in, under or about the
Premises, including soil and groundwater conditions, and (iii) the use,
generation, manufacture, production, installation, maintenance, removal,
transportation, storage, spill or release of any Hazardous Substance or storage
tank), now in effect or which may hereafter come into effect, and whether or not
reflecting a change in policy from any previously existing policy. Lessee shall,
within five (5) days after receipt of Lessor's written request, provide Lessor
with copies of all documents and information, including, but not limited to,
permits, registrations, manifests, applications, reports and certificates,
evidencing Lessee's compliance with any Applicable Law specified by Lessor, and
shall immediately upon receipt, notify Lessor in writing (with copies of any
documents involved) of any actual claim, notice, citation, warning, complaint or
report pertaining to or involving failure by Lessee or the Premises to comply
with any Applicable Law.

        6.4 INSPECTION; COMPLIANCE. Lessor and Lessor's Lender(s) (as defined in
Paragraph 8.3(a)) shall have the right to enter the Premises at any time, in the
case of an emergency, and otherwise at reasonable times, for the purpose of
inspecting the condition of the Premises and for verifying compliance by Lessee
with this Lease and all Applicable Laws (as defined in Paragraph 6.3), and to
employ experts and/or consultants in connection therewith and/or to advise
Lessor with respect to Lessee's activities including but not limited to the
installation, operation, use, monitoring, maintenance, or removal of any
Hazardous Substance or storage tank on or from the Premises. The costs and
expenses of any such inspections shall be paid by the party requesting same,
unless a Default or Breach of this Lease, violation of Applicable Law, or a
contamination, caused or materially contributed to by Lessee is found to exist
or be imminent, or unless the inspection is requested or ordered by a
governmental authority as the result of any such existing or imminent violation
or contamination. In any such case, Lessee shall upon request reimburse Lessor
or Lessor's Lender, as the case may be, for the costs and expenses of such
inspections.

7.      MAINTENANCE; REPAIRS; UTILITY INSTALLATIONS; TRADE FIXTURES AND
ALTERATIONS.

        7.1 LESSEE'S OBLIGATIONS.

               (a) Subject to the provisions of Paragraph 2.2 (Lessor's warranty
as to condition), 2.3 (Lessor's warranty as to compliance with covenants, etc),
7.2 (Lessor's obligations to repair), 9 (damage and destruction), and 14
(condemnation), Lessee shall, at Lessee's sole cost and expense and at all
times, keep the Premises and every part thereof in good order, condition and
repair, structural and non-structural (whether or not such portion of the
Premises requiring repair, or the means of repairing the same, are reasonably or
readily accessible to Lessee, and whether or not the need for such repairs
occurs as a result of Lessee's use, any prior use, the elements or the age of
such portion of the Premises), including, without limiting the generality of the
foregoing, all equipment or facilities serving the Premises, such as plumbing,
heating, air conditioning, ventilating, electrical, lighting facilities,
boilers, fired or unfired pressure vessels, fire sprinkler and/or standpipe and
hose or other automatic fire extinguishing system, including fire alarm and/or
smoke detection systems and equipment, fire hydrants, fixtures, walls (interior
and exterior), foundations, ceilings, roofs, floors, windows, 



                                     PAGE 2
<PAGE>   35
doors, plate glass, skylights, landscaping, driveways, parking lots, fences,
retaining walls, signs, sidewalks and parkways located in, on, about, or
adjacent to the Premises. Lessee shall not cause or permit any Hazardous
Substance to be spilled or released in, on, under or about the Premises
(including through the plumbing or sanitary sewer system) and shall promptly, at
Lessee's expense, take all investigatory and/or remedial action reasonably
recommended, whether or not formally ordered or required, for the cleanup of any
contamination of, and for the maintenance, security and/or monitoring of, the
Premises, the elements surrounding same, or neighboring properties, that was
caused or materially contributed to by Lessee, or pertaining to or involving any
Hazardous Substance and/or storage tank brought onto the Premises by or for
Lessee or under its control. Lessee, in keeping the Premises in good order,
condition and repair, shall exercise and perform good maintenance practices.
Lessee's obligations shall include restorations when necessary to keep the
Premises and all improvements thereon or a part thereof in good order, condition
and state of repair. If Lessee occupies the Premises for more than seven (7)
years, Lessor may require Lessee to repaint the exterior of the buildings on the
Premises as reasonably required, but not more frequently than once every seven
(7) years.

               (b) Lessee shall, at Lessee's sole cost and expense, procure and
maintain contracts, with copies to Lessor, in customary form and substance for,
and with contractors specializing and experienced in, the inspection,
maintenance and service of the following equipment and improvements, if any,
located on the Premises: (i) heating, air conditioning and ventilation
equipment, (ii) boiler, fired or unfired pressure vessels, (iii) fire sprinkler
and/or standpipe and hose or other automatic fire extinguishing systems,
including fire alarm and/or smoke detection, (iv) landscaping and irrigation
systems, (v) roof covering and drain maintenance and (vi) asphalt and parking
lot maintenance.

        7.2 LESSOR'S OBLIGATIONS. Except for the warranties and agreements of
Lessor contained in Paragraphs 2.2 (relating to condition of the Premises) 2.3
(relating to compliance with covenants, restrictions and building code), 9
(relating to destruction of the Premises) and 14 (relating to condemnation of
the Premises), it is intended by the Parties hereto that Lessor have no
obligation, in any manner whatsoever, to repair and maintain the Premises, the
improvements located thereon, or the equipment therein, whether structural or
non structural, all of which obligations are intended to be that of the Lessee
under Paragraph 7.1 hereof. It is the intention of the Parties that the terms of
this Lease govern the respective obligations of the Parties as to maintenance
and repair of the Premises. Lessee and Lessor expressly waive the benefit of any
statute now or hereafter in effect to the extent it is inconsistent with the
terms of this Lease with respect to, or which affords Lessee the right to make
repairs at the expense of Lessor or to terminate this Lease by reason of, any
needed repairs.

        7.3 UTILITY INSTALLATIONS; TRADE FIXTURES; ALTERATIONS.

               (a) DEFINITIONS; CONSENT REQUIRED. The term "UTILITY
INSTALLATIONS" is used in this Lease to refer to all carpeting, window
coverings, air lines, power panels, electrical distribution, security, fire
protection systems, communication systems, lighting fixtures, heating,
ventilating, and air conditioning equipment, plumbing, and fencing in, on or
about the Premises. The term "TRADE FIXTURES" shall mean Lessee's machinery and
equipment that can be removed without doing material damage to the Premises. The
term "ALTERATIONS" shall mean any modification of the improvements on the
Premises from that which are provided by Lessor under the terms of this Lease,
other than Utility Installations or Trade Fixtures, whether by addition or
deletion. "LESSEE OWNED ALTERATIONS AND/OR UTILITY INSTALLATIONS" are defined as
Alterations and/or Utility Installations made by Lessee that are not yet owned
by Lessor as defined in Paragraph 7.4(a). Lessee shall not make any Alterations
or Utility Installations in, on, under or about the Premises without Lessor's
prior written consent. Lessee may, however, make non-structural Utility
Installations to the interior of the Premises (excluding the roof), as long as
they are not visible from the outside, do not involve puncturing, relocating or
removing the roof or any existing walls, and the cumulative cost thereof during
the term of this Lease as extended does not exceed $25,000.

               (b) CONSENT. Any Alterations or Utility Installations that Lessee
shall desire to make and which require the consent of the Lessor shall be
presented to Lessor in written form with proposed detailed plans. All consents
given by Lessor, whether by virtue of Paragraph 7.3(a) or by subsequent specific
consent, shall be deemed conditioned upon: (i) Lessee's acquiring all applicable
permits required by governmental authorities, (ii) the furnishing of copies of
such permits together with a copy of the plans and specifications for the
Alteration or Utility Installation to Lessor prior to commencement of the work
thereon, and (iii) the compliance by Lessee with all conditions of said permits
in a prompt and expeditious manner. Any Alterations or Utility Installations by
Lessee during the term of this Lease shall be done in a good and workmanlike
manner, with good and sufficient materials, and in compliance with all
Applicable Law. Lessee shall promptly upon completion thereof furnish Lessor
with as-built plans and specifications therefor. Lessor may (but without
obligation to do so) condition its consent to any requested Alteration or
Utility Installation that costs $10,000 or more upon Lessee's providing Lessor
with a lien and completion bond in an amount equal to one and one-quarter times
the estimated cost of such Alteration or Utility Installation and/or upon
Lessee's posting an additional Security Deposit with Lessor under Paragraph 36
hereof.

               (c) INDEMNIFICATION. Lessee shall pay, when due, all claims for
labor or materials furnished or alleged to have been furnished to or for Lessee
at or for use on the Premises, which claims are or may be secured by any
mechanics' or materialmen's lien against the Premises or any interest therein.
Lessee shall give Lessor not less than ten (10) days' notice prior to the
commencement of any work in, on or about the Premises, and Lessor shall have the
right to post notices of non-responsibility in or on the Premises as provided by
law. If Lessee shall, in good faith, content the validity of any such lien,
claim or demand, then Lessee shall, at its sole expense defend and protect
itself, Lessor and the Premises against the same and shall pay and satisfy any
such adverse judgment that may be rendered thereon before the enforcement
thereof against the Lessor or the Premises. If Lessor shall require, Lessee
shall furnish to Lessor a surety bond satisfactory to Lessor in an amount equal
to one and one quarter times the amount of such contested lien claim or demand
indemnifying Lessor against liability for the same, as required by law for the
holding of the Premises free from the effect of such lien or claim. In addition,
Lessor may require Lessee to pay Lessor's reasonable attorney's fees and costs
in participating in such action if Lessor shall decide it is to its best
interest to do so.

        7.4 OWNERSHIP; REMOVAL; SURRENDER; AND RESTORATION.

               (a) OWNERSHIP. Subject to Lessor's right to require their removal
or become the owner thereof as hereinafter provided in this Paragraph 7.4, all
Alterations and Utility Additions made to the Premises by Lessee shall be the
property of and owned by Lessee, but considered a part of the Premises. Lessor
may, at any time and at its option, elect in writing to Lessee to be the owner
of all or any specified part of the Lessee Owned Alterations, and Utility
Installations. Unless otherwise instructed per subparagraph 7.4(b) hereof, all
Lessee Owned Alterations and Utility Installations shall, at the expiration or
earlier termination of this Lease, become the property of Lessor and remain upon
and be surrendered by Lessee with the Premises.

               (b) REMOVAL. Unless otherwise agreed in writing, Lessor may
require that any or all Lessee Owned Alterations or Utility Installations be
removed by the expiration of this Lease, notwithstanding their installation may
have been consented to by Lessor. Lessor may require the removal of all or any
part of any Lessee Owned Alterations or Utility Installations made without the
required consent of Lessor only if Lessee has requested Lessor's decision on
such removal in writing.

               (c) SURRENDER/RESTORATION. Lessee shall surrender the Premises by
the end of the last day of the Lease term or any earlier termination date, with
all of the improvements, parts and surfaces thereof clean and free of debris and
in good operating order, condition and state of repair, ordinary wear and tear
excepted. "ORDINARY WEAR AND TEAR" shall not include any damage or deterioration
that would have been prevented by good maintenance practice or by Lessee
performing all of its obligations under this Lease. Except as otherwise agreed
or specified in writing by Lessor, the Premises, as surrendered, shall include
the Utility Installations. The obligation of Lessee shall include the repair of
any damage occasioned by the installation, maintenance or removal of Lessee's
Trade Fixtures, furnishings, equipment, and Alterations and/or Utility
Installations, as well as the removal of any storage tank installed by or for
Lessee, and the removal, replacement, or remediation of any soil, material or
ground water contaminated by Lessee, all as may then be required by Applicable
Law and/or good practice. Lessee's Trade Fixtures shall remain the property of
Lessee and shall be removed by Lessee subject to its obligation to repair and
restore the Premises per this Lease.

8.      INSURANCE; INDEMNITY.

        8.1 PAYMENT FOR INSURANCE. Regardless of whether the Lessor or Lessee is
the Insuring Party, Lessee shall pay for all insurance required under this
Paragraph 8 except to the extent of the cost attributable to liability insurance
carried by Lessor in excess of $1,000,000 per occurrence. Premiums for policy
periods commencing prior to or extending beyond the Lease term shall be prorated
to correspond to the Lease term. Payment shall be made by Lessee to Lessor
within ten (10) days following receipt of an invoice for any amount due.

        8.2 LIABILITY INSURANCE.

               (a) CARRIED BY LESSEE. Lessee shall obtain and keep in force
during the term of this Lease a Commercial General Liability policy of insurance
protecting Lessee and Lessor (as an additional insured) against claims for
bodily injury, personal injury and property damage based upon, involving or
arising out of the ownership, use, occupancy or maintenance of the Premises and
all areas appurtenant thereto. Such insurance shall be on an occurrence basis
providing single limit coverage in an amount not less than $1,000,000 per
occurrence with an "Additional Insured-Managers or Lessors of Premises"
Endorsement and contain the "Amendment of the Pollution Exclusion" for damage
caused by heat, smoke or fumes from a hostile fire. The policy shall not contain
any intra-insured exclusions as between insured persons or organizations, but
shall include coverage for liability assumed under this Lease as an "insured
contract" for the performance of Lessee's indemnity obligations under this
Lease. The limits of said insurance required by this Lease or as carried by
Lessee shall not, however, limit the liability of Lessee nor relieve Lessee of
any obligation hereunder. All insurance to be carried by Lessee shall be primary
to and not contributory with any similar insurance carried by Lessor, whose
insurance shall be considered excess insurance only.



                                     PAGE 3
<PAGE>   36
               (b) CARRIED BY LESSOR. Lessor shall also maintain liability
insurance described in Paragraph 8.2(a), above, in addition to, and not in lieu
of, the insurance required to be maintained by Lessee. Lessee shall not be named
as an additional insured therein.

        8.3 PROPERTY INSURANCE-BUILDING, IMPROVEMENTS AND RENTAL VALUE.

               (a) BUILDING AND IMPROVEMENTS. The Insuring Party shall obtain
and keep in force during the term of this Lease a policy or policies in the name
of Lessor, with loss payable to Lessor and to the holders of any mortgages,
deeds of trust or ground leases on the Premises ("LENDER(S)"), insuring loss or
damage to the Premises. The amount of such insurance shall be equal to the full
replacement cost of the Premises, as the same shall exist from time to time, or
the amount required by Lenders, but in no event more than the commercially
reasonable and available insurable value thereof if, by reason of the unique
nature or age of the improvements involved, such later amount is less than full
replacement cost. If Lessor is the Insuring Party, however, Lessee Owned
Alterations and Utility Installations shall be insured by Lessee under Paragraph
8.4 rather than by Lessor. If the coverage is available and commercially
appropriate, such policy or policies shall insure against all risks of direct
physical loss or damage (except the perils of flood and/or earthquake unless
required by a Lender), including coverage for any additional costs resulting
from debris removal and reasonable amounts of coverage for the enforcement of
any ordinance or law regulating the reconstruction or replacement of any
undamaged sections of the Premises required to be demolished or removed by
reason of the enforcement of any building, zoning, safety or land use laws as
the result of a covered cause of loss. Said policy or policies shall also
contain an agreed valuation provision in lieu of any coinsurance clause, waiver
of subrogation, and inflation guard protection causing an increase in the annual
property insurance coverage amount by a factor of not less than the adjusted
U.S. Department of Labor Consumer Price Index for All Urban Consumers for the
city nearest to where the Premises are located. If such insurance coverage has a
deductible clause, the deductible amount shall not exceed $1,000 per occurrence,
and Lessee shall be liable for such deductible amount in the event of an Insured
Loss, as defined in Paragraph 9.1(c).

               (b) RENTAL VALUE. The Insuring Party shall, in addition, obtain
and keep in force during the term of this Lease a policy or policies in the name
of Lessor, with loss payable to Lessor and Lender(s), insuring the loss of the
full rental and other charges payable by Lessee to Lessor under this Lease for
one (1) year (including all real estate taxes, insurance costs, and any
scheduled rental increases). Said insurance shall provide that in the event the
Lease is terminated by reason of an insured loss, the period of indemnity for
such coverage shall be extended beyond the date of the completion of repairs or
replacement of the Premises, to provide for one full year's loss of rental
revenues from the date of any such loss. Said insurance shall contain an agreed
valuation provision in lieu of any coinsurance clause, and the amount of
coverage shall be adjusted annually to reflect the projected rental income,
property taxes, insurance premium costs and other expenses, if any, otherwise
payable by Lessee, for the next twelve (12) month period. Lessee shall be liable
for any deductible amount in the event of such loss.

               (c) ADJACENT PREMISES. If the Premises are part of a larger
building, or if the Premises are part of a group of buildings owned by Lessor
which are adjacent to the Premises, the Lessee shall pay for any increase in the
premiums for the property insurance of such building or buildings if said
increase is caused by Lessee's acts, omissions, use or occupancy of the
Premises.

               (d) TENANT'S IMPROVEMENTS. If the Lessor is the Insuring Party,
the Lessor shall not be required to insure Lessee Owned Alterations and Utility
Installations unless the item in question has become the property of Lessor
under the terms of this Lease. If Lessee is the Insuring Party, the policy
carried by Lessee under this Paragraph 8.3 shall insure Lessee Owned Alterations
and Utility Installations.

        8.4 LESSEE'S PROPERTY INSURANCE. Subject to the requirements of
Paragraph 8.5, Lessee at its cost shall either by separate policy or, at
Lessor's option, by endorsement to a policy already carried, maintain insurance
coverage on all of Lessee's personal property, Lessee Owned Alterations and
Utility Installations in, on, or about the Premises similar in coverage to that
carried by the Insuring Party under Paragraph 8.3. Such insurance shall be full
replacement cost coverage with a deductible of not to exceed $1,000 per
occurrence. The proceeds from any such insurance shall be used by Lessee for the
replacement of personal property or the restoration of Lessee Owned Alterations
and Utility Installations. Lessee shall be the Insuring Party with respect to
the insurance required by this Paragraph 8.4 and shall provide Lessor with
written evidence that such insurance is in force.

        8.5 INSURANCE POLICIES. Insurance required hereunder shall be in
companies duly licensed to transact business in the state where the Premises are
located, and maintaining during the policy term a "General Policyholders Rating"
of at least B+, V, or such other rating as may be required by a Lender having a
lien on the Premises, as set forth in the most current issue of "Best's
Insurance Guide." Lessee shall not do or permit to be done anything which shall
invalidate the insurance policies referred to in this Paragraph 8. If Lessee is
the Insuring Party, Lessee shall cause to be delivered to Lessor certified
copies of policies of such insurance or certificates evidencing the existence
and amounts of such insurance with the insureds and loss payable clauses as
required by this Lease. No such policy shall be cancelable or subject to
modification except after thirty (30) days prior written notice to Lessor.
Lessee shall at least thirty (30) days prior to the expiration of such policies,
furnish Lessor with evidence of renewals or "insurance binders" evidencing
renewal thereof, or Lessor may order such insurance and charge the cost thereof
to Lessee, which amount shall be payable by Lessee to Lessor upon demand. If the
Insuring Party shall fail to procure and maintain the insurance required to be
carried by the Insuring Party under this Paragraph 8, the other Party may, but
shall not be required to, procure and maintain the same, but at Lessee's
expense.

        8.6 WAIVER OF SUBROGATION. Without affecting any other rights or
remedies, Lessee and Lessor ("WAIVING PARTY") each hereby release and relieve
the other, and waive their entire right to recover damages (whether in contract
or in tort) against the other, for loss of or damage to the Waiving Party's
property arising out of or incident to the perils required to be insured against
under Paragraph 8. The effect of such releases and waivers of the right to
recover damages shall not be limited by the amount of insurance carried or
required, or by any deductibles applicable thereto.

        8.7 INDEMNITY. Except for Lessor's negligence or that of its agents,
employees, invitees or contractors and/or breach of express warranties, Lessee
shall indemnify, protect, defend and hold harmless the Premises, Lessor and its
agents, Lessor's master or ground lessor, partners and Lenders, from and against
any and all claims, loss of rents and/or damages, costs, liens, judgments,
penalties, permits, attorney's and consultant's fees, expenses and/or
liabilities arising out of, involving, or in dealing with, the occupancy of the
Premises by Lessee, the conduct of Lessee's business, any act, omission or
neglect of Lessee, its agents, contractors, employees or invitees, and out of
any Default or Breach by Lessee in the performance in a timely manner of any
obligation on Lessee's part to be performed under this Lease. The foregoing
shall include, but not be limited to, the defense or pursuit of any claim or any
action or proceeding involved therein, and whether or not (in the case of claims
made against Lessor) litigated and/or reduced to judgment, and whether well
founded or not. In case any action or proceeding be brought against Lessor by
reason of any of the foregoing matters, Lessee upon notice from Lessor shall
defend the same at Lessee's expense by counsel reasonably satisfactory to Lessor
and Lessor shall cooperate with Lessee in such defense. Lessor need not have
first paid any such claim in order to be so indemnified.

        8.8 EXEMPTION OF LESSOR FROM LIABILITY. Except to the extent caused by
the negligence or willful misconduct of Lessor, its agents, employees,
contractors or invitees, Lessor shall not be liable for injury or damage to the
person or goods, wares, merchandise or other property of Lessee, Lessee's
employees, contractors, invitees, customers, or any other person in or about the
Premises, whether such damage or injury is caused by or results from fire,
steam, electricity, gas, water or rain, or from the breakage, leakage,
obstruction or other defects of pipes, tire sprinklers, wires, appliances,
plumbing, air conditioning or lighting fixtures, or from any other cause,
whether the said injury or damage results from conditions arising upon the
Premises or upon other portions of the building of which the Premises are a
part, or from other sources or places, and regardless of whether the cause of
such damage or injury or the means of repairing the same is accessible or not.
Lessor shall not be liable for any damages arising from any act or neglect of
any other tenant of Lessor.

9.      DAMAGE OR DESTRUCTION.

        9.1 DEFINITIONS.

               (a) "PREMISES PARTIAL DAMAGE" shall mean damage or destruction to
the improvements on the Premises, other than Lessee Owned Alterations and
Utility Installations, the repair cost of which damage or destruction is less
than 50% of the then Replacement Cost of the Premises immediately prior to such
damage or destruction, excluding from such calculation the value of the land and
Lessee Owned Alterations and Utility Installations.

               (b) "PREMISES TOTAL DESTRUCTION" shall mean damage or destruction
to the Premises, other than Lessee Owned Alterations and Utility Installations,
the repair cost of which damage or destruction is 50% or more of the then
Replacement Cost of the Premises immediately prior to such damage or
destruction, excluding from such calculation the value of the land and Lessee
Owned Alterations and Utility Installations.

               (c) "INSURED LOSS" shall mean damage or destruction to
improvements on the Premises, other than Lessee Owned Alterations and Utility
Installations, which was caused by an event required to be covered by the
insurance described in Paragraph 8.3(a), irrespective of any deductible amounts
or coverage limits Involved.

               (d) "REPLACEMENT COST" shall mean the cost to repair or rebuild
the improvements owned by Lessor at the time of the occurrence to their
condition existing immediately prior thereto, including demolition, debris
removal and upgrading required by the operation of applicable building codes,
ordinances or laws, and without deduction for depreciation.

               (e) "HAZARDOUS SUBSTANCE CONDITION" shall mean the occurrence or
discovery of a condition involving the presence of, or a contamination by, a
Hazardous Substance as defined in Paragraph 6.2(a), in, on, or under the
Premises.

        9.2 PARTIAL DAMAGE-INSURED LOSS. If a Premises Partial Damage that is an
Insured Loss occurs, then Lessor shall, at Lessor's expense, repair such damage
(but not Lessee's Trade Fixtures or Lessee Owned Alterations and Utility
Installations) as soon as reasonably possible and this Lease shall continue in
full force and effect; provided, however, that Lessee shall, at Lessor's
election, make the repair of any damage or destruction the total 



                                     PAGE 4
<PAGE>   37
cost to repair of which is $10,000 or less, and, in such event, Lessor shall
make the insurance proceeds available to Lessee on a reasonable basis for that
purpose. Notwithstanding the foregoing, if the required insurance was not in
force or the insurance proceeds are not sufficient to effect such repair, the
Insuring Party shall promptly contribute the shortage in proceeds (except as to
the deductible which is Lessee's responsibility) as and when required to
complete said repairs. In the event, however, the shortage in proceeds was due
to the fact that, by reason of the unique nature of the improvements, full
replacement cost insurance coverage was not commercially reasonable and
available, Lessor shall have no obligation to pay for the shortage in insurance
proceeds or to fully restore the unique aspects of the Premises unless Lessee
provides Lessor with the funds to cover same, or adequate assurance thereof,
within ten (10) days following receipt of written notice of such shortage and
request therefore. If Lessor receives said funds or adequate assurance thereof
within said ten (10) day period, the party responsible for making the repairs
shall complete them as soon as reasonably possible and this Lease shall remain
in full force and effect. If Lessor does not receive such funds or assurance
within said period, Lessor may nevertheless elect by written notice to Lessee
within ten (10) days thereafter to make such restoration and repair as is
commercially reasonable with Lessor paying any shortage in proceeds, in which
case this Lease shall remain in full force and effect. If in such case Lessor
does not so elect, then this Lease shall terminate as of the date of the
occurrence of the damage or destruction. Unless otherwise agreed, Lessee shall
in no event have any right to reimbursement from Lessor for any funds
contributed by Lessee to repair any such damage or destruction. Premises partial
Damage due to flood or earthquake shall be subject to Paragraph 9.3 rather than
Paragraph 9.2, notwithstanding that there may be some insurance coverage, but
the net proceeds of any such insurance shall be made available for the repairs
if made by either Party.

        9.3 PARTIAL DAMAGE-UNINSURED LOSS. If a Premises Partial Damage that is
not an Insured Loss occurs, unless caused by a negligent or willful act of
Lessee (in which event Lessee shall make the repairs at Lessee's expense and
this Lease shall continue in full force and effect, but subject to Lessor's
rights under Paragraph 13), Lessor may at Lessor's option, either: (i) repair
such damage as soon as reasonably possible at Lessor's expense, in which event
this Lease shall continue in full force and effect, or (ii) give written notice
to Lessee within thirty (30) days after receipt by Lessor of knowledge of the
occurrence of such damage of Lessor's desire to terminate this Lease as of the
date sixty (60) days following the giving of such notice. In the event Lessor
elects to give such notice of Lessor's intention to terminate this Lease, Lessee
shall have the right within ten (10) days after the receipt of such notice to
give written notice to Lessor of Lessee's commitment to pay for the repair of
such damage totally at Lessee's expense and without reimbursement from Lessor.
Lessee shall provide Lessor with the required funds or satisfactory assurance
thereof within thirty (30) days following Lessee's said commitment. In such
event this Lease shall continue in full force and effect, and Lessor shall
proceed to make such repairs as soon as reasonably possible and the required
funds are available. If Lessee does not give such notice and provide the funds
or assurance thereof within the times specified above, this Lease shall
terminate as of the date specified in Lessor's notice of termination.

        9.4 TOTAL DESTRUCTION. Notwithstanding any other provision hereof, if a
Premises Total Destruction occurs (including any destruction required by any
authorized public authority), this Lease shall terminate sixty (60) days
following the date of such Premises Total Destruction, whether or not the damage
or destruction is an Insured Loss or was caused by a negligent or willful act of
negligence or willful misconduct of Lessee. In the event, however, that the
damage or destruction was caused by the negligence, or willful misconduct of
Lessee, Lessor shall have the right to recover Lessor's damages from Lessee
except as released and waived in Paragraph 8.6.

        9.5 DAMAGE NEAR END OF TERM. If at any time during the last six (6)
months of the term of this Lease there is damage for which the cost to repair
exceeds one (1) month's Base Rent, whether or not an Insured Loss, Lessor may,
at Lessor's option, terminate this Lease effective sixty (60) days following the
date of occurrence of such damage by giving written notice to Lessee of Lessor's
election to do so within thirty (30) days after the date of occurrence of such
damage. Provided, however, if Lessee at that time has an exercisable option to
extend this Lease or to purchase the Premises, then Lessee may preserve this
Lease by, within twenty (20) days following the occurrence of the damage, or
before the expiration of the time provided in such option for its exercise,
whichever is earlier ("Exercise Period"), (i) exercising such option and (ii)
providing Lessor with any shortage in insurance proceeds for adequate assurance
thereof) needed to make the repairs. If Lessee duly exercises such option during
said Exercise Period and provides Lessor with funds (or adequate assurance
thereof) to cover any shortage in insurance proceeds, Lessor shall, at Lessor's
expense repair such damage as soon as reasonably possible and this Lease shall
continue in full force and effect. If Lessee fails to exercise such option and
provide such funds or assurance during said Exercise Period, then Lessor may at
Lessor's option terminate this Lease as of the expiration of said sixty (60) day
period following the occurrence of such damage by giving written notice to
Lessee of Lessor's election to do so within ten (10) days after the expiration
of the Exercise Period, notwithstanding any term or provision in the grant of
option to the contrary.

        9.6 ABATEMENT OF RENT; LESSEE'S REMEDIES.

               (a) In the event of damage described in Paragraph 9.2 (Partial
Damage--Insured), whether or not Lessor or Lessee repairs or restores the
Premises, the Base Rent, Real Property Taxes, insurance premiums, and other
charges, if any, payable by Lessee hereunder for the period during which such
damage, its repair or the restoration continues (not to exceed the period for
which rental value insurance is required under Paragraph 8.3(b)), shall be
abated in proportion to the degree to which Lessee's use of the Premises is
impaired. Except for abatement of Base Rent, Real Property Taxes, insurance
premiums, and other charges, if any, as aforesaid, all other obligations of
Lessee hereunder shall be performed by Lessee, and Lessee shall have no claim
against Lessor for any damage suffered by reason of any such repair or
restoration.

               (b) If Lessor shall be obligated to repair or restore the
Premises under the provisions of this Paragraph 9 and shall not commence, in a
substantial and meaningful way, the repair or restoration of the Premises within
ninety (90) days after such obligation shall accrue, Lessee may, at any time
prior to the commencement of such repair or restoration, give written notice to
Lessor and to any Lenders of which Lessee has actual notice of Lessee's election
to terminate this Lease on a date not less than sixty (60) days following the
giving of such notice. If Lessee gives such notice to Lessor and such Lenders
and such repair or restoration is not commenced within thirty (30) days after
receipt of such notice, this Lease shall terminate as of the date specified in
said notice. If Lessor or a Lender commences the repair or restoration of the
Premises within thirty (30) days after receipt of such notice, this Lease shall
continue in full force and effect. "COMMENCE" as used in this Paragraph shall
mean either the unconditional authorization of the preparation of the required
plans, or the beginning of the actual work on the Premises, whichever first
occurs.

        9.7 HAZARDOUS SUBSTANCE CONDITIONS. If a Hazardous Substance Condition
occurs, unless Lessee is legally responsible therefor (in which case Lessee
shall make the investigation and remediation thereof required by Applicable Law
and this Lease shall continue in full force and effect, but subject to Lessor's
rights under Paragraph 13), Lessor may at Lessor's option either (i) investigate
and remediate such Hazardous Substance Condition, if required, as soon as
reasonably possible at Lessor's expense, in which event this Lease shall
continue in full force and effect, or (ii) if the estimated cost to investigate
and remediate such condition exceeds twelve (12) times the then monthly Base
Rent or $100,000, whichever is greater, give written notice to Lessee within
thirty (30) days after receipt by Lessor of knowledge of the occurrence of such
Hazardous Substance Condition of Lessor's desire to terminate this Lease as of
the date sixty (60) days following the giving of such notice. In the event
Lessor elects to give such notice of Lessor's intention to terminate this Lease,
Lessee shall have the right within ten (10) days after the receipt of such
notice to give written notice to Lessor of Lessee's commitment to pay for the
investigation and remediation of such Hazardous Substance Condition totally at
Lessee's expense and without reimbursement from Lessor except to the extent of
an amount equal to twelve (12) times the then monthly Base Rent or $100,000,
whichever is greater. Lessee shall provide Lessor with the funds required of
Lessee or satisfactory assurance thereof within thirty (30) days following
Lessee's said commitment. In such event this Lease shall continue in full force
and effect, and Lessor shall proceed to make such investigation and remediation
as soon as reasonably possible and the required funds are available. It Lessee
does not give such notice and provide the required funds or assurance thereof
within the times specified above, this Lease shall terminate as of the date
specified In Lessor's notice of termination. If a Hazardous Substance Condition
occurs for which Lessee is not legally responsible, there shall be abatement of
Lessee's obligations under this Lease to the same extent as provided in
Paragraph 9.6(a) for a period of not to exceed twelve months.

        9.8 TERMINATION--ADVANCE PAYMENTS. Upon termination of this Lease
pursuant to this Paragraph 9, an equitable adjustment shall be made concerning
advance Base Rent and any other advance payments made by Lessee to Lessor.
Lessor shall, in addition, return to Lessee so much of Lessee's Security Deposit
as has not been, or is not then required to be, used by Lessor under the terms
of this Lease.

        9.9 WAIVE STATUTES. Lessor and Lessee agree that the terms of this Lease
shall govern the effect of any damage to or destruction of the Premises with
respect to the termination of this Lease and hereby waive the provisions of any
present or future statute to the extent inconsistent herewith.

10.     REAL PROPERTY TAXES.

        10.1 (a) PAYMENT OF TAXES. Lessee shall pay the Real Property Taxes, as
defined in Paragraph 10.2, applicable to the Premises during the term of this
Lease. Subject to Paragraph 10.1(b), all such payments shall be made at least
ten (10) days prior to the delinquency date of the applicable installment.
Lessee shall promptly furnish Lessor with satisfactory evidence that such taxes
have been paid. If any such taxes to be paid by Lessee shall cover any period of
time prior to or after the expiration or earlier termination of the term hereof,
Lessee's share of such taxes shall be equitably prorated to cover only the
period of time within the tax fiscal year this Lease is in effect, and Lessor
shall reimburse Lessee for any overpayment after such proration. If Lessee shall
fail to pay any Real Property Taxes required by this Lease to be paid by Lessee,
Lessor shall have the right to pay the same, and Lessee shall reimburse Lessor
therefor upon demand.

               (b) ADVANCE PAYMENT. In order to insure payment when due and
before delinquency of any or all Real Property Taxes, Lessor reserves the right,
at Lessor's option, to estimate the current Real Property Taxes applicable to
the Premises, and to require such current year's Real Property Taxes to be paid
in advance to Lessor by Lessee, either: (i) in a lump sum amount equal to the
installment due, at least twenty (20) days prior to the applicable delinquency
date, or (ii) monthly in advance with the payment of the Base Rent. If Lessor
elects to require payment monthly in advance, the monthly payment shall be the
equal monthly amount which, over the number of months remaining before the month
in which the applicable tax 


                                     PAGE 5
<PAGE>   38
installment would become delinquent (and without interest thereon), would
provide a fund large enough to fully discharge before delinquency the estimated
installment of taxes to be paid. When the actual amount of the applicable tax
bill is known, the amount of such equal monthly advance payment shall be
adjusted as required to provide the fund needed to pay the applicable taxes
before delinquency. If the amounts paid to Lessor by Lessee under the provisions
of this Paragraph are insufficient to discharge the obligations of Lessee to pay
such Real Property Taxes as the same become due, Lessee shall pay to Lessor,
upon Lessor's demand, such additional sums as are necessary to pay such
obligations. All moneys paid to Lessor under this Paragraph may be intermingled
with other moneys of Lessor and shall not bear interest.

        10.2 DEFINITION OF "REAL PROPERTY TAXES." As used herein, the term "REAL
PROPERTY TAXES" shall include any form of real estate tax or assessment,
general, special, ordinary or extraordinary, and any license fee, commercial
rental tax, improvement bond or bonds, levy or tax (other than inheritance,
personal income or estate taxes) imposed upon the Premises by any authority
having the direct or indirect power to tax, including any city, state or federal
government, or any school, agricultural, sanitary, fire, street, drainage or
other improvement district thereof, levied against any legal or equitable
interest of Lessor in the Premises or in the real property of which the Premises
are a part, Lessor's right to rent or other income therefrom, and/or Lessor's
business of leasing the Premises. The term "REAL PROPERTY TAXES" shall also
include any tax, fee, levy, assessment or charge, or any increase therein
imposed by reason of events occurring, or changes in applicable law taking
effect, during the term of this Lease, including but not limited to the
execution of this Lease, or any modification, amendment or transfer thereof, and
whether or not contemplated by the Parties.

        10.3 JOINT ASSESSMENT. If the Premises are not separately assessed,
Lessee's liability shall be an equitable proportion of the Real Property Taxes
for all of the land and improvements included within the tax parcel assessed,
such proportion to be determined by Lessor from the respective valuations
assigned in the assessor's work sheets or such other information as may be
reasonably available. Lessor's reasonable determination thereof, in good faith,
shall be conclusive.

        10.4 PERSONAL PROPERTY TAXES. Lessee shall pay prior to delinquency all
taxes assessed against and levied upon Lessee Owned Alterations, Utility
Installations, Trade Fixtures, furnishings, equipment and all personal property
of Lessee contained in the Premises or elsewhere. When possible, Lessee shall
cause its Trade Fixtures, furnishings, equipment and all other personal property
to be assessed and billed separately from the real property of Lessor. If any of
Lessee's said personal property shall be assessed with Lessor's real property,
Lessee shall pay Lessor the taxes attributable to Lessee within ten (10) days
after receipt of a written statement setting forth the taxes applicable to
Lessee's property or, at Lessor's option, as provided in Paragraph 10.1(b).

11.     UTILITIES. Lessee shall pay for all water, gas, heat, light, power,
telephone, trash disposal and other utilities and services supplied to the
Premises, together with any taxes thereon. If any such services are not
separately metered to Lessee, Lessee shall pay a reasonable proportion, to be
determined by Lessor, of all charges jointly metered with other premises.

12.     ASSIGNMENT AND SUBLETTING.

        12.1 LESSOR'S CONSENT REQUIRED.

               (a) Lessee shall not voluntarily or by operation of law assign,
transfer, mortgage or otherwise transfer or encumber (collectively,
"ASSIGNMENT") or sublet all or any part of Lessee's interest in this Lease or in
the Premises without Lessor's prior written consent given under and subject to
the terms of Paragraph 36 which consent shall not be unreasonably withheld or
delayed.

               (b) Deleted.

               (c) Deleted.

               (d) Deleted.

        12.2 TERMS AND CONDITIONS APPLICABLE TO ASSIGNMENT AND SUBLETTING.

               (a) Regardless of Lessor's consent, any assignment or subletting
shall not: (i) be effective without the express written assumption by such
assignee or sublessee of the obligations of Lessee under this Lease, (ii)
release Lessee of any obligations hereunder, or (iii) alter the primary
liability of Lessee for the payment of Base Rent and other sums due Lessor
hereunder or for the performance of any other obligations to be performed by
Lessee under this Lease.

               (b) Lessor may accept any rent or performance of Lessee's
obligations from any person other than Lessee pending approval or disapproval of
an assignment. Neither a delay in the approval or disapproval of such assignment
nor the acceptance of any rent or performance shall constitute a waiver or
estoppel of Lessor's right to exercise its remedies for the Default or Breach by
Lessee of any of the terms, covenants or conditions of this Lease.

               (c) The consent of Lessor to any assignment or subletting shall
not constitute a consent to any subsequent assignment or subletting by Lessee or
to any subsequent or successive assignment or subletting by the sublessee.
However, Lessor may consent to subsequent sublettings and assignments of the
sublease or any amendments or modifications thereto without notifying Lessee or
anyone else liable on the Lease or sublease and without obtaining their consent,
and such action shall not relieve such persons from liability under this Lease
or sublease.

               (d) In the event of any Default or Breach of Lessee's obligations
under this Lease, Lessor may proceed directly against Lessee, any Guarantors or
any one else responsible for the performance of the Lessee's obligations under
this Lease, including the sublessee, without first exhausting Lessor's remedies
against any other person or entity responsible therefor to Lessor, or any
security held by Lessor or Lessee.

               (e) Each request for consent to an assignment or subletting shall
be in writing, accompanied by information relevant to Lessor's determination as
to the financial and operational responsibility and appropriateness of the
proposed assignee or sublessee, including but not limited to the intended use
and/or required modification of the Premises. Lessee agrees to provide Lessor
with such other or additional information and/or documentation as may be
reasonably requested by Lessor.

               (f) Any assignee of, or sublessee under, this Lease shall, by
reason of accepting such assignment or entering into such sublease, be deemed,
for the benefit of Lessor, to have assumed and agreed to conform and comply with
each and every term, covenant, condition and obligation herein to be observed or
performed by Lessee during the term of said assignment or sublease, other than
such obligations as are contrary to or inconsistent with provisions of an
assignment or sublease to which Lessor has specifically consented in writing.

               (g) Deleted.

               (h) Deleted.

        12.3 ADDITIONAL TERMS AND CONDITIONS APPLICABLE TO SUBLETTING. The
following terms and conditions shall apply to any subletting by Lessee of all or
any part of the Premises and shall be deemed included in all subleases under
this Lease whether or not expressly incorporated therein:

               (a) Lessee hereby assigns and transfers to Lessor all of Lessee's
interest in all rentals and income arising from any sublease of all or a portion
of the Premises heretofore or hereafter made by Lessee, and Lessor may collect
such rent and income and apply same toward Lessee's obligations under this
Lease; provided, however, that unless a Breach (as defined in Paragraph 13.1)
shall occur in the performance of Lessee's obligations under this Lease, Lessee
may, except as otherwise provided in this Lease, receive, collect and enjoy the
rents accruing under such sublease. Lessor shall not, by reason of this or any
other assignment of such sublease to Lessor, nor by reason of the collection of
the rents from a sublessee, be deemed liable to the sublessee for any failure of
Lessee to perform and comply with any of Lessee's obligations to such sublessee
under such sublease. Lessee hereby irrevocably authorizes and directs any such
sublessee, upon receipt of a written notice from Lessor stating that a Breach
exists in the performance of Lessee's obligations under this Lease, to pay to
Lessor the rents and other charges due and to become due under the sublease.
Sublessee shall rely upon any such statement and request from Lessor and shall
pay such rents and other charges to Lessor without any obligation or right to
inquire as to whether such Breach exists and notwithstanding any notice from or
claim from Lessee to the contrary Lessee shall have no right or claim against
said sublessee, or, until the Breach has been cured, against Lessor, for any
such rents and other charges so paid by said sublessee to Lessor.

               (b) Deleted.

               (c) Any matter of thing requiring the consent of the sublessor
under the sublease shall also require the consent of Lessor herein.

               (d) No sublessee shall further assign or sublet all or any part
of the Premises without Lessor's prior written consent.

               (e) Lessor shall deliver a copy of any notice of Default or
Breach by Lessee to the sublessee, who shall have the right to cure the Default
of Lessee within the grace period, if any, specified in such notice. The
sublessee shall have a right of reimbursement and offset from and against Lessee
for any such Defaults cured by the sublessee.

13.     DEFAULT; BREACH; REMEDIES.

        13.1 DEFAULT; BREACH. Lessor and Lessee agree that if an attorney is
consulted by either party in connection with a Default or Breach (as hereinafter
defined), $350.00 is a reasonable minimum sum per such occurrence for legal
services and costs in the preparation and service of a notice 



                                     PAGE 6
<PAGE>   39
of Default, and that either party may include the cost of such services and
costs in said notice as due and payable to cure said Default. A "DEFAULT" is
defined as a failure by either party to observe, comply with or perform any of
the terms, covenants, conditions or rules applicable to Lessee under this Lease.
A "BREACH" is defined as the occurrence of any one or more of the following
Defaults, and, where a grace period for cure after notice is specified herein,
the failure by Lessee to cure such Default prior to the expiration of the
applicable grace period, and shall entitle Lessor to pursue the remedies set
forth in Paragraphs 13.2 and/or 13.3:

               (a) The vacating of the Premises without the intention to
reoccupy same, or the abandonment of the Premises.

               (b) Except as expressly otherwise provided in this Lease, the
failure by Lessee to make any payment of Base Rent or any other monetary payment
required to be made by Lessee hereunder, whether to Lessor or to a third party
as and when due, the failure by Lessee to provide Lessor with reasonable
evidence of insurance or surety bond required under this Lease, or the failure
of Lessee to fulfill any obligation under this Lease which endangers or
threatens life or property, where such failure continues for a period of three
(3) days following receipt or written notice thereof by or on behalf of Lessor
to Lessee.

               (c) Except as expressly otherwise provided in this Lease, the
failure by Lessee to provide Lessor with reasonable written evidence (in duly
executed original form, if applicable) of (i) compliance with applicable law per
Paragraph 6.3, (ii) the inspection, maintenance and service contracts required
under Paragraph 7.1(b), (iii) the recission of an unauthorized assignment or
subletting per Paragraph 12.1(b), (iv) a Tenancy Statement per Paragraphs 16 or
37, (v) the subordination or non-subordination of this Lease per Paragraph 30,
(vi) the guaranty of the performance of Lessee's obligations under this Lease if
required under Paragraphs 1.11 and 37, (vii) the execution of any document
requested under Paragraph 42 (easements), or (viii) any other documentation or
information, which Lessor may reasonably require of Lessee under the terms of
this Lease, where any such failure continues for a period of twenty (20) days
following receipt of written notice by or on behalf of Lessor to Lessee.

               (d) A Default by Lessee as to the terms, covenants, conditions or
provisions of this Lease, or of the rules adopted under Paragraph 40 hereof,
that are to be observed, complied with or performed by Lessee, other than those
described in subparagraphs (a), (b) or (c), above, where such Default continues
for a period of thirty (30) days after written notice thereof by or on behalf of
Lessor to Lessee; provided, however, that if the nature of Lessee's Default is
such that more than thirty (30) days are reasonably required for its cure, then
it shall not be deemed to be a Breach of this Lease by Lessee if Lessee
commences such cure within said thirty (30) day period and thereafter diligently
prosecutes such cure to completion.

               (e) The occurrence of any of the following events: (i) The making
by Lessee of any general arrangement or assignment for the benefit of creditors:
(ii) Lessee's becoming a "debtor" as defined in 11 U.S.C. Section 101 or any
successor statute thereto (unless, in the case of a petition filed against
Lessee, the same is dismissed within sixty (60) days); (iii) the appointment of
a trustee or receiver to take possession of substantially all of Lessee's assets
located at the Premises or of Lessee's interest in this Lease, where possession
is not restored to Lessee within sixty (60) days; or (iv) the attachment,
execution or other judicial seizure of substantially all of Lessee's assets
located at the Premises or of Lessee's interest in this Lease, where such
seizure is not within sixty (60) days; provided; however, in the event that any
provision of this subparagraph (e) is contrary to any applicable law, such
provision shall be of no force or effect, and not affect the validity of the
remaining provisions.

               (f) The discovery by Lessor that any financial statement given to
Lessor by Lessee of any Guarantor of Lessee's obligations hereunder was
materially false.

               (g) If the performance of Lessee's obligations under this Lease
is guaranteed: (i) the death of a guarantor, (ii) the termination of a
guarantor's liability with respect to this Lease other than in accordance with
the terms of such guaranty, (iii) a guarantor's becoming insolvent or the
subject of a bankruptcy filing, (iv) a guarantor's refusal to honor the
guaranty, or (v) a guarantor's breach of its guaranty obligation on an
anticipatory breach basis and Lessee's failure, within sixty (60) days following
written notice by or on behalf of Lessor to Lessee of any such event, to provide
Lessor with written alternative assurance or security, which, when coupled with
the then existing resources of Lessee, equals or exceeds the combined financial
resources of Lessee and the guarantors that existed at the time of execution of
this Lease.

        13.2 REMEDIES. If Lessee fails to perform any affirmative duty or
obligation of Lessee under this Lease, within ten (10) days after written notice
to Lessee (or in case of an emergency, without notice), Lessor may at its option
(but without obligation to do so), perform such duty or obligation on Lessee's
behalf, including but not limited to the obtaining of reasonably required bonds,
insurance policies, or governmental licenses, permits or approvals. The costs
and expenses of any such performance by Lessor shall be due and payable by
Lessee to Lessor upon invoice therefor. If any check given to Lessor by Lessee
shall not be honored by the bank upon which it is drawn, Lessor, at its option,
may require all future payments to be made under this Lease by Lessee to be made
only by cashier's check. In the event of a Breach of this Lease by Lessee, as
defined in Paragraph 13.1, with or without further notice or demand, and without
limiting Lessor in the exercise of any right or remedy which Lessor may have by
reason of such Breach, Lessor may:

               (a) Terminate Lessee's right to possession of the Premises by any
lawful means, in which case this Lease and the term hereof shall terminate and
Lessee shall immediately surrender possession of the Premises to Lessor. In such
event Lessor shall be entitled to recover from Lessee: (i) the worth at the time
of the award of the unpaid rent which had been earned at the time of
termination: (ii) the worth at the time of award of the amount by which the
unpaid rent which would have been earned after termination until the time of
award exceeds the amount of such rental loss that the Lessee proves could have
been reasonably avoided; (iii) the worth at the time of award of the amount by
which the unpaid rent for the balance of the term after the time of award
exceeds the amount of such rental loss that the Lessee proves could be
reasonably avoided; and (iv) any other amount necessary to compensate Lessor for
all the detriment proximately caused by the Lessee's failure to perform its
obligations under this Lease or which in the ordinary course of things would be
likely to result therefrom, including but not limited to the cost of recovering
possession of the Premises, expenses of reletting, including necessary
renovation and alteration of the Premises, reasonable attorneys' fees, and that
portion of the leasing commission paid by Lessor applicable to the unexpired
term of this Lease. The worth at the time of award of the amount referred to in
provision (iii) of the prior sentence shall be computed by discounting such
amount at the discount rate of the Federal Reserve Bank of San Francisco at the
time of award plus one percent. Efforts by Lessor to mitigate damages caused by
Lessee's Default or Breach of this Lease shall not waive Lessor's right to
recover damages under this Paragraph. If termination of this Lease is obtained
through the provisional remedy of unlawful detainer, Lessor shall have the right
to recover in such proceeding the unpaid rent and damages as are recoverable
therein, or Lessor may reserve therein the right to recover all or any part
thereof in a separate suit for such rent and/or damages. If a notice and grace
period required under subparagraphs 13.1(b), (c) or (d) was not previously
given, a notice to pay rent or quit, or to perform or quit, as the case may be,
given to Lessee under any statute authorizing the forfeiture of leases for
unlawful detainer shall also constitute the applicable notice for grace period
purposes required by subparagraphs 13.1(b), (c) or (d). In such case, the
applicable grace period under subparagraphs 13.1(b), (c) or (d) and under the
unlawful detainer statute shall run concurrently after the one such statutory
notice, and the failure of Lessee to cure the Default within the greater of the
two such grace periods shall constitute both an unlawful detainer and a Breach
of this Lease entitling Lessor to the remedies provided for in this Lease and/or
by said statute.

               (b) Continue the Lease and Lessee's right to possession in effect
(in California under California Civil Code Section 1951.4) after Lessee's Breach
and abandonment and recover the rent as It becomes due, provided Lessee has the
right to sublet or assign, subject only to reasonable limitations. See
Paragraphs 12 and 36 for the limitations on assignment and subletting which
limitations Lessee and Lessor agree are reasonable. Acts of maintenance or
preservation, efforts to relet the Premises, or the appointment of a receiver to
protect the Lessor's interest under the Lease, shall not constitute a
termination of the Lessee's right to possession.

               (c) Pursue any other remedy now or hereafter available to Lessor
under the laws or judicial decisions of the state wherein the Premises are
located.

               (d) The expiration or termination of this Lease and/or the
termination of Lessee's right to possession shall not relieve Lessee from
liability under any indemnity provisions of this Lease as to matters occurring
or accruing during the term hereof or by reason of Lessee's occupancy of the
Premises.

        13.3 INDUCEMENT RECAPTURE IN EVENT OF BREACH. Any agreement by Lessor
for free or abated rent or other charges applicable to the Premises, or for the
giving or paying by Lessor to or for Lessee of any cash or other bonus,
inducement or consideration for Lessee's entering into this Lease, all of which
concessions are hereinafter referred to as "INDUCEMENT PROVISIONS" shall be
deemed conditioned upon Lessee's full and faithful performance of all of the
terms, covenants and conditions of this Lease to be performed or observed by
Lessee during the term hereof as the same may be extended. Upon the occurrence
of a Breach of this Lease by Lessee, as defined In Paragraph 13.1, any such
Inducement Provision shall automatically be deemed deleted from this Lease and
of no further force or effect, and any rent, other charge, bonus, inducement or
consideration theretofore abated, given or paid by Lessor under such an
Inducement Provision shall be immediately due and payable by Lessee to Lessor,
and recoverable by Lessor as additional rent due under this Lease,
notwithstanding any subsequent cure of said Breach by Lessee. The acceptance by
Lessor of rent or the cure of the Breach which initiated the operation of this
Paragraph shall not be deemed a waiver by Lessor of the provisions of this
Paragraph unless specifically so stated in writing by Lessor at the time of such
acceptance.

        13.4 LATE CHARGES. Lessee hereby acknowledges that late payment by
Lessee to Lessor of rent and other sums due hereunder will cause Lessor to incur
costs not contemplated by this Lease, the exact amount of which will be
extremely difficult to ascertain. Such costs include, but are not limited to,
processing and accounting charges, and late charges which may be imposed upon
Lessor by the terms of any ground lease, mortgage or trust deed covering the
Premises. Accordingly, if any installment of rent or any other sum due from
Lessee shall not be received by Lessor or Lessor's designee within five (5) days
after receipt of notice from Lessor that such amount shall be due, then, Lessee
shall pay to Lessor a late charge equal to six percent (6%) of such overdue
amount. The parties hereby agree that such late charge represents a fair and
reasonable estimate of the costs Lessor 


                                     Page 7



<PAGE>   40
will incur by reason of late payment by Lessee. Acceptance of such late charge
by Lessor shall in no event constitute a waiver of Lessee's Default or Breach
with respect to such overdue amount, nor prevent Lessor from exercising any of
the other rights and remedies granted hereunder. In the event that a late charge
is payable hereunder, whether or not collected, for three (3) consecutive
installments of Base Rent, then notwithstanding Paragraph 4.1 or any other
provision of this Lease to the contrary, Base Rent shall, at Lessor's option,
become due and payable quarterly in advance.

        13.5 BREACH BY LESSOR. Lessor shall not be deemed in breach of this
Lease unless Lessor fails within a reasonable time to perform an obligation
required to be performed by Lessor. For purposes of this Paragraph 13.5, a
reasonable time shall in no event be less than thirty (30) days after receipt by
Lessor, and by the holders of any ground lease, mortgage or deed of trust
covering the Premises whose name and address shall have been furnished Lessee in
writing for such purpose, of written notice specifying wherein such obligation
of Lessor has not been performed; provided, however, that if the nature of
Lessor's obligation is such that more than thirty (30) days after such notice
are reasonably required for its performance, then Lessor shall not be in breach
of this Lease if performance is commenced within such thirty (30) day period and
thereafter diligently pursued to completion.

14.     CONDEMNATION. If the Premises or any portion thereof are taken under the
power of eminent domain or sold under the threat of the exercise of said power
(all of which are herein called "condemnation"), this Lease shall terminate as
to the part so taken as of the date the condemning authority takes title or
possession, whichever first occurs. If more than ten percent (10%) of the floor
area of the Premises, or more than twenty-five percent (25%) of the land area
not occupied by any building, is taken by condemnation, Lessee may, at Lessee's
option, to be exercised in writing within ten (10) days after Lessor shall have
given Lessee written notice of such taking (or in the absence of such notice,
within ten (10) days after the condemning authority shall have taken possession)
terminate this Lease as of the date the condemning authority takes such
possession. If Lessee does not terminate this Lease in accordance with the
foregoing, this Lease shall remain in full force and effect as to the portion of
the Premises remaining except that the Base Rent shall be reduced in the same
proportion as the rentable floor area of the Premises taken bears to the total
rentable floor area of the building located on the Premises. No reduction of
Base Rent shall occur if the only portion of the Premises taken is land on which
there is no building. Any award for the taking of all or any part of the
Premises under the power of eminent domain or any payment made under threat of
the exercise of such power shall be the property of Lessor whether such award
shall be made as compensation for diminution in value of the leasehold or for
the taking of the fee, or as severance damages; provided however that Lessee
shall be entitled to any compensation separately awarded to Lessee for Lessee's
relocation expenses and/or loss of Lessee's Trade Fixtures. In the event that
this Lease is not terminated by reason of such condemnation, Lessor shall to the
extent of its net severance damages received, over and above the legal and other
expenses incurred by Lessor in the condemnation matter, repair any damage to the
Premises caused by such condemnation except to the extent that Lessee has been
reimbursed therefor by the condemning authority. Lessee shall be responsible for
the payment of any amount in excess of such net severance damages required to
complete such repair.

15.     BROKERS FEE.

        15.1 The Brokers named in Paragraph 1.10 are the procuring causes of
this Lease.

        15.2 Upon execution of this Lease by both Parties, Lessor shall pay to
said Brokers jointly or in such separate shares as they may mutually designate
in writing, a fee as set forth in a separate written agreement between Lessor
and said Brokers for brokerage services rendered by said Brokers to Lessor in
this transaction.

        15.3 Deleted

        15.4 Deleted

        15.5 Lessee and Lessor each represent and warrant to the other that it
has had no dealings with any person, firm, broker or finder (other than the
Brokers, if any named in Paragraph 1.10) in connection with the negotiation of
this Lease and/or the consummation of the transaction contemplated hereby and
that no broker or other person, firm or entity other than said named Brokers is
entitled to any commission or finder's fee in connection with said transaction.
Lessee and Lessor do each hereby agree to indemnify, protect, defend, and hold
the other harmless from and against liability for compensation or charges which
may be claimed by any such unnamed broker, finder or other similar party by
reason of any dealings or actions of the indemnifying Party, including any
costs, expenses, attorneys' fees reasonably incurred with respect thereto.

        15.6 Lessor and Lessee hereby consent to and approve all agency
relationships, including any dual agencies, indicated in Paragraph 1.10.

16.     TENANCY STATEMENT.

        16.1 Each Party (as "RESPONDING PARTY") shall within ten (10) days after
written notice from the other Party (the "REQUESTING PARTY") execute,
acknowledge and deliver to the Requesting Party a statement in writing in form
similar to the then most current "TENANCY STATEMENT" form published by the
American Industrial Real Estate Association plus such additional information,
confirmation and/or statements as may be reasonably requested by the Requesting
Party.

        16.2 It Lessor desires to finance, refinance. or sell the Premises any
part thereof, or the building of which the Premises are a part, Lessee and all
Guarantors of Lessee's performance hereunder shall deliver to any potential
lender or purchaser designated by Lessor such financial statements of Lessee and
such Guarantors as may be reasonably required by such lender or purchaser,
including but not limited to Lessee's financial statements for the past three
(3) years. All such financial statements shall be received by Lessor and such
lender or purchaser in confidence and shall be used only for the purposes herein
set forth.

17.     LESSOR'S LIABILITY. The term "LESSOR" as used herein shall mean the
owner at the time in question of the fee title to the Premises, or, if this is a
sublease, of the Lessee's interest in the prior lease. In the event of a
transfer of Lessor's title or interest in the Premises or in this Lease, Lessor
shall deliver to the transferee or assignee (in cash or by credit) any unused
Security Deposit held by Lessor at the time of such transfer or assignment.
Except as provided in Paragraph 15, upon such transfer or assignment and
delivery of the Security Deposit, as aforesaid, the prior Lessor shall be
relieved of all liability with respect to the obligations and/or covenants under
this Lease thereafter to be performed by the Lessor. Subject to the foregoing,
the obligations and/or covenants in this Lease to be performed by the Lessor
shall be binding only upon the Lessor as hereinabove defined.

18.     SEVERABILITY. The invalidity of any provision of this Lease, as
determined by a court of competent jurisdiction, shall in no way affect the
validity of an other provision hereof.

19.     INTEREST ON PAST-Due Obligations. Any monetary payment due Lessor
hereunder other than late charges, not received by Lessor within thirty (30)
days following the date on which it was due, shall bear interest from the
thirty-first (31st) day after it was due at the rate of 12% per annum, but not
exceeding the maximum rate allowed by law, in addition to the late charge
provided for in Paragraph 13.4.

20.     TIME OF ESSENCE. Time is of the essence with respect to the performance
of all obligations to be performed or observed by the Parties under this Lease.

21.     RENT DEFINED. All monetary obligations of Lessee to Lessor under the
terms of this Lease are deemed to be rent.

22.     NO PRIOR OR OTHER AGREEMENTS; BROKER DISCLAIMER. This Lease contains all
agreements between the Parties with respect to any matter mentioned herein and
no other prior or contemporaneous agreement or understanding shall be effective.
Lessor and Lessee each represents and warrants to the Broker that it has made,
and is relying solely upon, its own investigation as to the nature, quality,
character and financial responsibility of the other Party to the Lease and as to
the nature, quality and character of the Premises. Brokers have no
responsibility with respect thereto or with respect to any default or breach
hereof by either Party.

23.     NOTICES.

        23.1 All notices required or permitted by this Lease shall be in writing
and may be delivered in person (by hand or by messenger or courier service) or
may be sent by regular, certified or registered mail or U.S. Postal Service
Express Mail with postage prepaid or by facsimile transmission, and shall be
deemed sufficiently given if served in a manner specified in this Paragraph 23.
The addresses noted adjacent to a Party's signature on this Lease shall be that
Party's address for delivery or mailing of notice purposes. Either Party may by
written notice to the other specify a different address for notice purposes,
except that upon Lessee's taking possession of the Premises, the Premises shall
constitute Lessee's address for the purpose of mailing or delivering notices to
Lessee. A copy of all notices required or permitted to be given to Lessor
hereunder shall be concurrently transmitted to such party or parties at such
addresses as Lessor may from time to time hereafter designate by written notice
to Lessee.

        23.2 Any notice sent by registered or certified mail, return receipt
requested, shall be deemed given on the date of delivery shown on the receipt
card or if no delivery date is shown, the postmark thereon. If sent by regular
mail the notice shall be deemed given forty-eight (48) hours after the same is
addressed as required herein and mailed with postage prepaid. Notices delivered
by United States Express Mail or overnight courier that guarantees next day
delivery shall be deemed given twenty-four (24) hours after delivery of the same
to the United States Postal Service or courier. If any notice is transmitted by
facsimile transmission or similar means, the same shall be deemed served or
delivered upon telephone confirmation of receipt of the transmission thereof,
provided a copy is also delivered via delivery or mail. If notice is received on
a Sunday or legal holiday, it shall be deemed received on the next business day.

24.     WAIVERS. No waiver by Lessor of the Default or Breach of any term,
covenant or condition hereof by Lessee, shall be deemed a waiver of any other
term, covenant or condition hereof, or of any subsequent Default or Breach by
Lessee of the same or of any other term, covenant or condition hereof. Lessor's
consent to, or approval of, any act shall not be deemed to render unnecessary
the obtaining of Lessor's consent to, or approval of, any 


                                     PAGE 8
<PAGE>   41
subsequent or similar act by Lessee, or be construed as the basis of an estoppel
to enforce the provision or provisions of this Lease requiring such consent.
Regardless of Lessor's knowledge of a Default or Breach at the time of accepting
rent, the acceptance of rent by Lessor shall not be a waiver of any preceding
Default or Breach by Lessee of any provision hereof, other than the failure of
Lessee to pay the particular rent so accepted. Any payment given Lessor by
Lessee may be accepted by Lessor on account of moneys or damages due Lessor,
notwithstanding any qualifying statements or conditions made by Lessee in
connection therewith, which such statements and/or conditions shall be of no
force or effect whatsoever unless specifically agreed to in writing by Lessor at
or before the time of deposit of such payment.

25.     RECORDING. Either Lessor or Lessee shall, upon request of the other,
execute, acknowledge and deliver to the other a short form memorandum of this
Lease for recording purposes. The Party requesting recordation shall be
responsible for payment of any fees or taxes applicable thereto.

26.     NO RIGHT TO HOLDOVER. Lessee has no right to retain possession of the
Premises or any part thereof beyond the expiration or earlier termination of
this Lease.

27.     CUMULATIVE REMEDIES. No remedy or election hereunder shall be deemed
exclusive but shall, wherever possible, be cumulative with all other remedies at
law or in equity.

28.     COVENANTS AND CONDITIONS. All provisions of this Lease to be observed or
performed by Lessee are both covenants and conditions.

29.     BINDING EFFECTS; CHOICE OF LAW. This lease shall be binding upon the
parties, their personal representatives, successors and assigns and be governed
by the laws of the State in which the Premises are located. Any litigation
between the Parties hereto concerning this Lease shall be initiated in the
county in which the Premises are located.

30.     SUBORDINATION; ATTORNMENT; NON-DISTURBANCE.

        30.1 SUBORDINATION. This Lease and any Option granted hereby shall be
subject and subordinate to any ground lease, mortgage, deed of trust, or other
hypothecation or security device (collectively, "SECURITY DEVICE"), now or
hereafter placed by Lessor upon the real property of which the Premises are
part, to any and all advances made on the security thereof, and to all renewals,
modifications, consolidations, replacements and extensions thereof. Lessee
agrees that the Lenders holding any such Security Device shall have no duty,
liability or obligation to perform any of the obligations of Lessee under this
Lease, but that in the event of Lessor's default with respect to any such
obligation, Lessee will give any Lender whose name and address has been
furnished Lessee in writing for such purpose notice of Lessor's default and
allow such Lender thirty (30) days following receipt of such notice, the cure of
said default before invoking any remedies Lessee may have by reason thereof. If
any Lender shall elect to have this Lease and/or any Option granted hereby
superior to the lien of its Security Device and shall give written notice
thereof to Lessee, this Lease and such Options shall be deemed prior to such
Security Device notwithstanding the relative dates of the documentation or
recordation thereof.

        30.2 ATTORNMENT. Subject to the non-disturbance provision of Paragraph
30.3, Lessee agrees to attorn to a Lender or any other party who acquires
ownership of the Premises by reason of a foreclosure of a Security Device, and
that in the event of such foreclosure such new owner shall not: (i) be liable
for any act or omission of any prior lessor or with respect to events occurring
prior to acquisition of ownership, (ii) be subject to any offsets or defenses
which Lessee might have against any prior lessor, or (iii) be bound by
prepayment of more than one month's rent.

        30.3 NON-DISTURBANCE. With respect to Security Devices entered into by
Lessor after the execution of this Lease, Lessee's subordination of this Lease
shall be subject to receiving assurance ("NON-DISTURBANCE AGREEMENT") from the
Lender that Lessee's possession and this Lease, including any option to extend
the term hereof, will not be disturbed so long as Lessee is not in Breach hereof
and attorns to the record owner of the Premises.

        30.4 SELF-EXECUTING. The agreements contained in this Paragraph 30 shall
be effective without the execution of any further documents; provided however,
that, upon written request from Lessor or a Lender or Lessee in connection with
a sale, financing or refinancing of the Premises, Lessee and Lessor shall
execute such further writings as may be reasonably required to separately
document any such subordination or non-subordination, attornment and
non-disturbance agreement as is provided for herein.

31.     ATTORNEY'S FEES. If any Party or Broker brings an action or proceeding
to enforce the terms hereof or declare rights hereunder, the Prevailing Party
(as hereafter defined) or Broker in any such proceeding, action, or appeal
thereon, shall be entitled to reasonable attorney's fees. Such fees may be
awarded in the same suit or recovered in a separate suit, whether or not such
action or proceeding is pursued to decision or judgment. The term "PREVAILING
PARTY" shall include, without limitation, a Party or Broker who substantially
obtains or defeats the relief sought, as the case may be, whether by compromise,
settlement, judgment, or the abandonment by the other Party or Broker of its
claim or defense. The attorney's fee award shall not be computed in accordance
with any court fee schedule, but shall be such as to fully reimburse all
attorney's fees reasonably incurred. Lessor shall be entitled to attorney's
fees, costs and expenses incurred in the preparation and service of notices of
Default and consultations in connection therewith only if a legal action is
subsequently commenced in connection with such Default or resulting Breach.

32.     LESSOR'S ACCESS; SHOWING PREMISES; REPAIRS. Lessor and Lessor's agents
shall have the right to enter the Premises at any time, in the case of
emergency, and otherwise at reasonable times for the purpose of showing the same
to prospective purchasers, lenders, or lessees, and making such alterations,
repairs, improvements or additions to the Premises or to the building of which
they are a part, as Lessor may reasonably deem necessary. Lessor may at any time
place on or about the Premises or building any ordinary "For Sale" signs and
Lessor may at any time during the last one hundred twenty (120) days of the term
hereof place on or about the Premises any ordinary "For Lease" signs. All such
activities of Lessor shall be without abatement of rent or liability to Lessee.

33.     AUCTIONS. Lessee shall not conduct, nor permit to be conducted, either
voluntarily or involuntarily, any auction upon the Premises without first having
obtained Lessor's prior written consent. Notwithstanding anything to the
contrary in this Lease, Lessor shall not be obligated to exercise any standard
reasonableness in determining whether to grant such consent.

34.     SIGNS. Lessee shall not place any sign upon the Premises, except that
Lessee may, with Lessor's prior written consent, install (but not on the roof)
such signs as are reasonably required to advertise Lessee's own business. The
installation of any sign on the Premises by or for Lessee shall be subject to:
provisions of Paragraph 7 (Maintenance, Repairs, Utility Installations, Trade
Fixtures and Alterations). Unless otherwise expressly agreed herein, Lessor
reserves all rights to the use of the roof and the right to install, and all
revenues from the installation of, such advertising signs on the Premises,
including the roof, as do not unreasonably interfere with the conduct of
Lessee's business.

35.     TERMINATION; MERGER. Unless specifically stated otherwise in writing by
Lessor, the voluntary or other surrender of this Lease by Lessee, the mutual
termination or cancellation hereof, or a termination hereof by Lessor for Breach
by Lessee, shall automatically terminate any sublease or lesser estate in the
Premises; provided, however, Lessor shall, in the event of any such surrender,
termination or cancellation, have the option to continue any one or all of any
existing subtenancies. Lessor's failure within ten (10) days following any such
event to make a written election to the contrary by written notice to the holder
of any lesser interest, shall constitute Lessor's election to have such event
constitute the termination of such interest.

36.     CONSENTS.

               (a) Except for Paragraph 33 hereof (Auctions) or as otherwise
provided herein, wherever in this Lease the consent of a Party is required to an
act by or for the other Party, such consent shall not be unreasonably withheld
or delayed. Lessor's actual reasonable costs and expenses (including but not
limited to architects', attorneys', engineers' or other consultants' fees)
incurred in the consideration of, or response to, a request by Lessee for a
Lessor consent pertaining to this Lease for the Premises, including but not
limited to consents to an assignment, a subletting or the presence or use of a
Hazardous Substance, practice or storage tank, shall be paid by Lessee to Lessor
upon receipt of an invoice and supporting documentation therefor. Subject to
Paragraph 12.2(e) (applicable to assignment or subletting), Lessor's consent to
any act, assignment of this Lease or subletting of the Premises by Lessee shall
not constitute an acknowledgement that no Default or Breach by Lessee of this
Lease exists, nor shall such consent be deemed a waiver of any then existing
Default or Breach, except as may be otherwise specifically stated in writing by
Lessor at the time of such consent.

               (b) The failure to specify herein any particular condition to
Lessor's consent shall not preclude the imposition by Lessor at the time of
consent of such further or other conditions as are then reasonable with
reference to the particular matter for which consent is being given.

37.     GUARANTOR.

        37.1 If there are to be any Guarantors of this Lease per Paragraph 1.11,
the form of the guaranty to be executed by each such Guarantor shall be the form
most recently published by the American Industrial Real Estate Association, and
each said Guarantor shall have the same obligations as Lessor under this Lease,
including but not limited to the obligation to provide the Tenancy Statement and
information called for by Paragraph 16.

        37.2 It shall constitute a default of the Lessee under this Lease if any
such Guarantor fails or refuses, upon reasonable request by Lessor to give (a)
evidence of the due execution of the guaranty called for by this Lease,
including the authority of the Guarantor (and of the party signing on
Guarantor's behalf) to obligate such Guarantor on said guaranty, and including
in the case of a corporate Guarantor, a certified copy of a resolution of its
board of directors authorizing the making of such guaranty, together with a
certificate of incumbency showing the signatures of the persons authorized to
sign on its behalf, (b) current financial statements of Guarantor as may from
time to time be requested by Lessor, (c) a Tenancy Statement, or (d) written
confirmation that the guaranty is still in effect.


                                     PAGE 9
<PAGE>   42
38.     QUIET POSSESSION. Upon payment by Lessee of the rent for the Premises
and the observance and performance of all of the covenants, conditions and
provisions on Lessee's part to be observed and performed under this Lease,
Lessee shall have quiet possession of the Premises for the entire term hereof
subject to all of the provisions of this Lease.

39.     OPTIONS.

        39.1 DEFINITION. As used in this Paragraph 39 the word "OPTION" has the
following meanings: (a) the right to extend the term of this Lease or to renew
this Lease or to extend or renew any lease that Lessee has on other property of
Lessor; (b) the right of first refusal to lease the Premises or the right of
first offer to lease the Premises or the right of first refusal to lease other
property of Lessor or the right of first offer to lease other property of
Lessor; (c) the right to purchase the Premises, or the right of first refusal to
purchase the Premises, or the right of first offer to purchase the Premises, or
the right to purchase other property of Lessor, or the right of first refusal to
purchase other property of Lessor, or the right of first offer to purchase other
property of Lessor.

        39.2 Deleted.

        39.3 MULTIPLE OPTIONS. In the event that Lessee has any multiple Options
to extend or renew this Lease, a later option cannot be exercised unless the
prior Options to extend or review this Lease have been validly exercised.

        39.4 EFFECT OF DEFAULT ON OPTIONS.

               (a) Lessee shall have no right to exercise an Option,
notwithstanding any provision in the grant of Option to the contrary: (i) during
the period commencing with the giving of any notice of Default under Paragraph
13.1 and continuing until the noticed Default is cured, or (ii) during the
period of time any monetary obligation due Lessor from Lessee is unpaid, or
(iii) during the time Lessee is in Breach of this Lease, or (iv) in the event
that Lessor has given to Lessee three (3) or more notices of Default under
Paragraph 13.1, whether or not the Defaults are cured, during the twelve (12)
month period immediately preceding the exercise of the Option.

               (b) The period of time within which an Option may be exercised
shall not be extended or enlarged by reason of Lessee's inability to exercise an
Option because of the provisions of Paragraph 39.4(a).

               (c) All rights of Lessee under the provision of an Option shall
terminate and be of no further force or effect, notwithstanding Lessee's due and
timely exercise of the Option, if, after such exercise and during the term of
this Lease, (i) Lessee fails to pay to Lessor a monetary obligation of Lessee
for a period of thirty (30) days after such obligation becomes due or (ii)
Lessor gives to Lessee three or more notices of Default under Paragraph 13.1
during any twelve month period that remain uncured.

40.     MULTIPLE BUILDINGS. If the premises are part of a group of buildings
controlled by Lessor, Lessee agrees that it will abide by, keep and observe all
reasonable rules and regulations which Lessor may make from time to time for the
management, safety, care, and cleanliness of the grounds, the parking and
unloading of vehicles and the preservation of good order, as well as for the
convenience of other occupants or tenants of such other buildings and their
invitees, and that Lessee will pay its fair share of common expenses incurred in
connection therewith.

41.     SECURITY MEASURES. Lessee hereby acknowledges that the rental payable to
Lessor hereunder does not include the cost of guard service or other security
measures, and that Lessor shall have no obligation whatsoever to provide same.
Lessee assumes all responsibility for the protection of the Premises, Lessee,
its agents and invitees, and their property from the acts of third parties.

42.     RESERVATIONS. Lessor reserves to itself the right, from time to time, to
grant, without the consent or joinder of Lessee, such easements, rights, and
dedications that Lessor deems necessary, and to cause the recordation of parcel
maps and restrictions, so long as such easements, rights, dedications, maps, and
restrictions do not unreasonably interfere with the use of the Premises by
Lessee. Lessee agrees to sign any documents reasonably requested by Lessor to
effectuate any such easement rights, dedication, map or restrictions.

43.     PERFORMANCE UNDER PROTEST. If at any time a dispute shall arise as to
any amount or sum of money to be paid by one Party to the other under the
provisions hereof, the Party against whom the obligation to pay the money is
asserted shall have the right to make payment "under protest" and such payment
shall not be regarded as voluntary payment and there shall survive the right on
the part of said Party to institute suit for recovery of such sum. If it shall
be adjudged that there was no legal obligation on the part of said Party to pay
such sum or any part thereof, said Party shall be entitled to recover such sum
or so much thereof as it was not legally required to pay under the provisions of
this Lease.

44.     AUTHORITY. If either Party hereto is a corporation, trust, or general or
limited partnership, each individual executing this lease on behalf of such
entity represents and warrants that he or she is duly authorized to execute and
deliver this Lease on its behalf. If Lessee is a corporation, trust or
partnership, Lessee shall, within thirty (30) days after request by Lessor,
deliver to Lessor evidence satisfactory to Lessor of such authority.

45.     CONFLICT. Any conflict between the printed provisions of this Lease and
the typewritten or handwritten provisions shall be controlled by the typewritten
or handwritten provisions.

46.     OFFER. Preparation of this Lease by Lessor or Lessor's agent and
submission of same to Lessee shall not be deemed an offer to lease to Lessee.
This Lease is not intended to be binding until executed by all Parties hereto.

47.     AMENDMENTS. This Lease may be modified only in writing, signed by the
parties in interest at the time of the modification. The parties shall amend
this Lease from time to time to reflect any adjustments that are made to the
Base Rent or other rent payable under this Lease. As long as they do not
materially change Lessee's obligations hereunder, Lessee agrees to make such
reasonable non-monetary modifications to this Lease as may be reasonably
required by an institutional, insurance company, or pension plan Lender in
connection with the obtaining of normal financing or refinancing of the property
of which the Premises are a part.

48.     MULTIPLE PARTIES. Except as otherwise expressly provided herein, if more
than one person or entity is named herein as either Lessor or Lessee, the
obligations of such multiple parties shall be the joint and several
responsibility of all persons or entities named herein as such Lessor or Lessee.

LESSOR AND LESSEE HAVE CAREFULLY READ AND REVIEWED THIS LEASE AND EACH TERM AND
PROVISION CONTAINED HEREIN, AND BY THE EXECUTION OF THIS LEASE, SHOW THEIR
INFORMED AND VOLUNTARY CONSENT THERETO. THE PARTIES HEREBY AGREE THAT, AT THE
TIME THIS LEASE IS EXECUTED, THE TERMS OF THIS LEASE ARE COMMERCIALLY REASONABLE
AND EFFECTUATE THE INTENT AND PURPOSE OF LESSOR AND LESSEE WITH RESPECT TO THE
PREMISES.


        IF THIS LEASE HAS BEEN FILED IN, IT HAS BEEN PREPARED FOR SUBMISSION TO
        YOUR ATTORNEY FOR HIS APPROVAL. FURTHER, EXPERTS SHOULD BE CONSULTED TO
        EVALUATE THE CONDITION OF THE PROPERTY AS TO THE POSSIBLE PRESENCE OF
        ASBESTOS, STORAGE TANKS OR HAZARDOUS SUBSTANCES. NO REPRESENTATION OR
        RECOMMENDATION IS MADE BY THE AMERICAN INDUSTRIAL REAL ESTATE
        ASSOCIATION OR BY THE REAL ESTATE BROKER(S) OR THEIR AGENTS OR EMPLOYEES
        AS TO THE LEGAL SUFFICIENCY, LEGAL EFFECT, OR TAX CONSEQUENCES OF THIS
        LEASE OR THE TRANSACTION TO WHICH IT RELATES; THE PARTIES SHALL RELY
        SOLELY UPON THE ADVICE OF THEIR OWN COUNSEL AS TO THE LEGAL AND TAX
        CONSEQUENCES OF THIS LEASE. IF THE SUBJECT PROPERTY IS LOCATED IN A
        STATE OTHER THAN CALIFORNIA, AN ATTORNEY FROM THE STATE WHERE THE
        PROPERTY IS LOCATED SHOULD BE CONSULTED.


The parties hereto have executed this Lease at the place on the dates specified
above to their respective signatures.


Executed at Palo Alto                          Executed at Palo Alto
on March 17, 1993                              on March 17, 1993

by LESSOR:                                     by LESSEE:

MV 440, INC.,                                  QUICKTURN SYSTEMS, INC.
- -------------------------------                -------------------------------
a California corporation                       a California corporation
- -------------------------------                -------------------------------

By:                                            By:
   ----------------------------                   -----------------------------
Name Printed: William J. Hurwick               Name Printed: Dennis Favero

Title:                                         Title:       VP/CFO
      -------------------------                      ---------------------------



                                    PAGE 10
<PAGE>   43
NOTICES TO BE SENT TO:                       By:
                                                 -------------------------------

Name Printed: William J. Hurwick/WJH Group   Name Printed:
                                                          ----------------------
Title:   Cornish & Carey Commercial          Title:       
                                                   -----------------------------
Address: 400 Hamilton Avenue                 Address:                         
                                                     ---------------------------
         Palo Alto, CA  94301

Tel. No. (415) 688-8550 Fax No.              Tel. No. (____) ________ Fax. No.
(415) 321-0719 (___)__________




                                    PAGE 11
<PAGE>   44
   
                                                      Attachment F (Exhibit B-2)
    

       ADDENDUM TO STANDARD INDUSTRIAL/COMMERCIAL SINGLE-TENANT LEASE-NET
                              DATED MARCH 17, 1993
                   BY AND BETWEEN MV 440, INC. ("LESSOR") AND
          QUICKTURN SYSTEMS, INC. ("LESSEE"), A CALIFORNIA CORPORATION



49. Payment of Direct           As additional rent during the term hereof,
    Expenses:                   Lessee shall pay to Lessor direct expenses
                                ("Direct Expenses") incurred by Lessor in the
                                operation and maintenance of the Premises
                                (including all direct costs of management for
                                the Project, which shall be fixed at $1,000.00
                                per month for the term of this Lease), real
                                property taxes, insurance premiums, maintenance
                                contracts for the repair and maintenance of the
                                heating, ventilating and air-conditioning system
                                and landscaping.

                                Lessor estimates that Direct Expenses for the
                                Premises (including the costs of management for
                                the Project applicable to the Premises) during
                                the first calendar year of the Lease term
                                hereunder will be the equivalent of $3,878.81
                                per month. Accordingly, during the first year of
                                the Lease term, Lessee shall pay to Lessor
                                $3,878.81 per month as additional rent
                                attributable to Direct Expenses. At the
                                commencement of each year of the term hereof,
                                Lessor will notify Lessee of the monthly amount
                                to be paid for Direct Expenses for that year.
                                Lessee shall have the right to audit Lessor's
                                books and records with respect to Direct
                                Expenses within thirty (30) days after receipt
                                from Lessor of the new calculation of Direct
                                Expenses. If the audit discloses that an
                                overpayment was required of Lessee, Lessor, as
                                soon as reasonably practical, shall refund the
                                excess amount overpaid by Lessee. If the audit
                                discloses that Lessee has underpaid the Direct
                                Expenses, Lessee shall pay the excess amount
                                owing to Lessor as soon as reasonably practical.

50. Roof and HVAC               Lessor shall be responsible for all roof
    Warranty; Building          maintenance (other than maintenance needed due
    Systems:                    to Lessee's negligence) for the period from May
                                1, 1993 through April 30, 1994. Lessor also
                                shall warrant the HVAC system to be in working
                                order and be responsible for all
                                parts/components replacement for the period from
                                May 1, 1993 through April 30, 1994.
                                Notwithstanding the foregoing, as of the
                                Commencement Date, the Premises shall be in
                                broom-clean condition, and all utilities, HVAC
                                systems, plumbing, electrical (including,
                                without limitation, outlets and light fixtures)
                                and fire and landscape sprinkler systems
                                ("Building Systems") shall be in good working
                                order and repair.



Lessor's                                           Lessee's
Initials:  ____                                    Initials:  _____


<PAGE>   45
   
                                                      Attachment G (Exhibit B-2)
    

                            SECOND ADDENDUM TO LEASE



        THIS SECOND ADDENDUM TO LEASE ("Addendum") is dated for reference
purposes only as of March 17, 1993, and is made between MV 440, INC., a
California corporation ("Lessor") and QUICKTURN SYSTEMS, INC., a California
corporation ("Lessee"), to be a part of that certain Standard
Industrial/Commercial Single-Tenant Lease-Net of even date herewith between
Lessor and Lessee (herein the Please Form "Lease Form") concerning 17,636 square
feet of space (the "Premises") located on the second floor of the two-story
building ("Building") located at 440 Clyde Avenue, Mountain View, California.

        1. LESSEE IMPROVEMENTS: The parties acknowledge that, at Lessee's sole
cost and expense, Lessee shall construct certain non-structural improvements
(the "Lessee Improvements") described in plans and specifications previously
approved by Lessor. The Lessee Improvements shall be constructed in accordance
with the plans and specifications and in a good and workmanlike manner.

        2. ACCEPTANCE OF PREMISES: Notwithstanding anything to the contrary in
the Lease, Lessee's sole acceptance of the Premises or Lessee's submission of a
"punch list" to Lessor not later than sixty (60) days after the Commencement
Date shall not be deemed a waiver of Lessee's right to have latent defects in
the Premises (excluding the Lessee Improvements) repaired at Lessor's sole
expense. Lessee shall give notice to Lessor whenever any latent defect (i.e.,
any defect that could not reasonably have been discovered by Lessee) becomes
reasonably apparent, and Lessor shall repair such defect as soon as practicable.
Lessor also hereby assigns to Lessee all warranties with respect to the Premises
which would reduce Lessee's maintenance obligations hereunder and shall
cooperate with Lessee to enforce all such warranties.

        3. COMPLIANCE WITH LAWS: At the Commencement Date, the Premises and the
project in which the Premises are located ("Project") shall conform to all
underwriter's requirements and all rules, regulations, statutes, ordinances,
laws and building codes (collectively "Applicable Laws") applicable thereto,
including, without limitation, all Applicable Laws governing Hazardous
Materials, as defined in the Lease. Lessee shall not be required to construct or
to pay the cost of complying with any underwriters requirements or Applicable
Laws requiring construction of improvements in the Premises which are properly
capitalized under generally accepted accounting principles, unless such
compliance is necessitated solely because of Lessee's particular use of the
Premises. Lessor represents and warrants that, to the best of its knowledge,
there are no covenants, conditions, restrictions or encumbrances ("CC&R's")
affecting the Project.

        4. USE OF PREMISES: If the Premises should become not reasonably
suitable for Lessee's use as a consequence of (i) cessation of utilities or
other services; (ii) interference with access to the Premises; or (iii) legal
restrictions, so long as items (i) through (iii) do not result from the fault
of, or are beyond the control of, Lessor and Lessee, or the presence of any
Hazardous Material which does not result form Lessee's use, storage or disposal
of such Hazardous Material in or about the Premises, and in any of the foregoing
cases the interference with Lessee's use of the Premises persists for one
hundred twenty (120) continuous days, then Lessee shall be entitled to terminate
this Lease.


<PAGE>   46
        5. ALTERATIONS, ADDITIONS AND IMPROVEMENTS: Notwithstanding anything to
the contrary in the Lease:

               A. If Lessor has not consented to Lessee's request to construct
alterations, utility installations, additions and improvements ("Alterations")
in the Premises within three (3) business days after the date of Lessee's
written request therefor, Lessor shall be deemed to have consented to the
Alteration.

               B. Lessor shall have no lien or other interest whatsoever in any
item of Lessee's trade fixtures and personal property located in the Premises,
and shall execute any document reasonably necessary to waive any lien or
interest in Lessee's trade fixtures and personal property located at the
Premises.

               C. Upon request, Lessor shall advise Lessee in writing whether it
reserves the right to require Lessee to remove any Alterations from the Premises
upon termination of the Lease.

               D. Alterations and Lessee's trade fixtures, furniture, equipment
and other personal property installed in the Premises ("Lessee's Property")
shall at all times be and remain Lessee's Property, and Lessee shall be entitled
to all depreciation, amortization and other tax benefits with respect thereto.
Except for Alterations which cannot be removed without structural injury to the
Premises, at any time Lessee may remove Lessee's Property from the Premises,
provided Lessee repairs all damage caused by such removal.

        6. EXPENSES: Notwithstanding anything to the contrary in the Lease, in
no event shall Lessee have any obligation to perform, to pay directly, or to
reimburse Lessor for, all or any portion of the following repairs, maintenance,
improvements, replacements, premiums, claims, losses, fees, commissions,
charges, disbursements, attorneys' fees, experts' fees, costs and expenses
(collectively "Costs"):

               A. Losses Caused By Others, Construction Defects and Failure to
Build In Compliance With Law: Costs to correct any construction defect in the
Premises (other than in the Lessee Improvements) or the Project, or Costs
arising out of a failure to construct the Building or common areas in accordance
with all Applicable Laws and private restrictions.

               B. Casualties, Condemnations and Insurance Costs: Costs
occasioned by fire, acts of God, or other casualties or by the exercise of the
power of eminent domain or Costs for insurance coverage not customarily paid by
tenants of similar projects in the vicinity of the Premises and/or co-insurance
payments.

               C. Capital Leases and Capital Improvements: Lease payments and
other Direct Expenses to acquire, install or replace capital machinery and
equipment (such as air conditioners, elevators, and the like), and Costs which
would properly be capitalized under generally accepted accounting principles and
which relate to repairs, alterations, improvements, equipment and tools to the
extent that Lessee's share of the total Cost of such capital item exceed (i) the
reduction in other expenses payable by Lessee under the Lease which results from
the capital repair or installation of the capital item; or (ii) in any year, the
annual amortized cost of 


                                       2


<PAGE>   47
the item based on its useful life determined in accordance with generally
accepted accounting principles.

               D. Structural Repairs: Costs relating to the replacement of the
structural elements of the Building and Project.

               E. Reimbursable Expenses: Costs for which Lessor has a right of
reimbursement from others or Costs which Lessee pays directly to a third person.

               F. Reserves: Depreciation, amortization or other expense
reserves.

               G. Mortgages: Interest, charges and fees incurred on debt,
payments on mortgages and rent under ground leases.

               H. Hazardous Materials: Costs incurred to investigate the
presence of any Hazardous Materials, Costs to respond to any claim of Hazardous
Material contamination or damage, Costs to remove any Hazardous Material from
the Project or to remediate any Hazardous Material contamination and any
judgments or other Costs incurred in connection with any Hazardous Material
exposure or release, except to the extent the Cost is caused by the storage, use
or disposal of the Hazardous Material in question by Lessee. (Lessee shall have
no liability to Lessor or any of its officers, agents, partners or tenants as a
consequence of the presence of Hazardous Materials in or about the Premises that
were not used, stored, treated or disposed of in or about the Premises in
violation of Applicable Law by Lessee or Lessee's agents, employees or
contractors.)

               I. Real Estate Taxes: Taxes, assessments, all other governmental
levies, and any increases in the foregoing occasioned by or relating to a
voluntary or involuntary change of ownership or other conveyance of the
Premises.

        7. SURRENDER: Notwithstanding anything to the contrary in the Lease,
Lessee's obligations to surrender the Premises shall be fulfilled if Lessee
surrenders possession of the Premises in the condition existing at the
commencement of the Lease, except for ordinary wear and tear, acts of God,
casualties, condemnation, Hazardous Materials (other than those stored, used or
disposed of by Lessee in or about the Premises), and alterations concerning
which Lessor has not reserved the right to require removal, or if it has
reserved the right of removal, it does not elect to have Lessee remove from the
Premises at the end of the term.

        8. INDEMNITY: Notwithstanding anything to the contrary in the Lease,
Lessor shall not be released from, and shall indemnify, defend, protect, and
hold harmless Lessee from, all damages, liabilities, judgments, actions, claims,
attorneys' fees, consultants' fees, payments, costs and expenses arising from
the negligence or willful misconduct of Lessor or its employees, agents,
contractors or invitees, Lessor's violation of Applicable Law, or a breach of
Lessor's obligations or representations under this Lease.

        9. ASSIGNMENT AND SUBLETTING: Lessee may, without Lessor's prior written
consent, sublet the Premises or assign the Lease to: (i) a subsidiary,
affiliate, franchisee, division or corporation controlled or under common
control with Lessee; (ii) a successor corporation related to Lessee by merger,
consolidation, non-bankruptcy reorganization, or government  


                                       3


<PAGE>   48
action; or (iii) a purchaser of substantially all of Lessee's assets located at
the Premises, so long as the purchaser, at the time of the purchase, has a net
worth substantially the same as that of Lessee as of the date of its execution
of the Lease. For the purpose of the Lease, sale of Lessee's capital stock
through any public exchange shall not be deemed an assignment, subletting, or
any other transfer of the Lease or the Premises.

        10. RULES AND REGULATIONS: Lessor shall not require Lessee's compliance
with any rule or regulation applicable to the Premises that unreasonably
interferes with Lessee's use of the Premises or materially changes Lessee's
rights under the Lease.

        11. DEFAULT AND LATE CHARGE: Notwithstanding anything to the contrary in
the Lease, Lessee shall not be deemed to be in default, Lessor shall not be
entitled to cure any breach by Lessee under the Lease, nor shall any late charge
or interest be imposed, on account of (i) Lessee's failure to pay money to
Lessor, unless Lessee's failure to pay continues for five (5) days after
Lessee's actual receipt of written notice of delinquency; or (ii) Lessee's
failure to perform any covenant of this Lease (other than a covenant to pay
money to Lessor), unless Lessee's failure to perform such covenant continues
after Lessee's actual receipt of written notice for a period of thirty (30) days
or such longer time as may reasonably be required to cure the default. Further,
Lessee shall not be in default of this Lease solely because (a) it abandons or
vacates the Premises; or (b) as a consequence of the filing of an involuntary
bankruptcy petition, the appointment of a receiver, the attachment of any
interest in the Lease or of Lessee's other assets or the exercise by any third
party of any other remedy with respect to Lessee, Lessee's interest in this
Lease or Lessee's other assets, unless the petition, receiver, attachment or
other remedy is not discharged within sixty (60) days.

        12. LESSOR'S ENTRY: Notwithstanding anything to the contrary in the
Lease, Lessor and Lessor's agents, except in the case of emergency, shall
provide Lessee with twenty-four (24) hours' notice prior to entry of the
Premises. Such entry by Lessor and Lessor's agents shall not impair Lessee's
operations more than reasonably necessary, and Lessor and Lessor's agents shall
be accompanied at all times by an employee of Lessee.

        13. APPROVALS: Whenever the Lease requires an approval, consent,
designation, determination or judgment by either Lessor or Lessee, such
approval, consent, designation, determination or judgment (including, without
limiting the generality of the foregoing, those required in connection with
assignment and subletting) shall not be unreasonably withheld or delayed and in
exercising any right or remedy hereunder, each party shall at all times act
reasonably and in good faith.

        14. REASONABLE EXPENDITURES: Any expenditure by a party permitted or
required under the Lease, for which such party is entitled to demand and does
demand reimbursement from the other party, shall be limited to the fair market
value of the goods and services involved, shall be reasonably incurred, and
shall be substantiated by documentary evidence available for inspection and
review by the other party or its representative during normal business hours.

        15. OPTION TO EXTEND: Notwithstanding anything to the contrary in the
Lease:




                                       4


<PAGE>   49
               A. Grant of Option: Lessor hereby grants to Lessee one option(s)
(the "Option(s)") to extend the term of the Lease, each for an additional term
five (5) years, commencing on May 1, 2000, upon the terms and conditions set
forth in this Paragraph 15.

               B. Exercise of Option: Lessee shall exercise such option by
giving Lessor written notice of its intention not less than twelve (12) months
prior to the expiration of the then-existing term of the Lease.

               C. Extended Term Rent: If this Option is exercised, the basic
rent for the Premises shall be ninety-five percent (95%) of the then-current
fair market monthly rent ("Fair Market Rent") for the Premises as of the
commencement date of the applicable extended term, as determined by the
agreement of the parties, or, if the parties cannot agree, then the Fair Market
Rent shall be determined by three appraisers selected and governed by the Rules
of the American Arbitration Association. All other terms and conditions
contained in the Lease and this Addendum, as the same may be amended from time
to time by the parties in accordance with the provisions of the Lease, shall
remain in full force and effect and shall apply during the Option term.

               D. Rescission: Notwithstanding anything to the contrary contained
in this paragraph, if the basic rent during the Option period is determined by
appraisal and if Lessee does not, in its discretion, approve the rental amount
established by such appraisal, Lessee may rescind its exercise of the Option not
later than six (6) months prior to the last day of the Term by giving Lessor
written notice of such election to rescind. If Lessee timely rescinds its
exercise of the Option, then Lessee shall pay all costs and expenses of the
appraisal.

        16. DAMAGE AND DESTRUCTION OF PREMISES: Notwithstanding anything to the
contrary contained in the Lease:

               A. Lessor shall not have the right to terminate the Lease if
damage to or destruction of the Premises or the building in which the Premises
is located, or both, results from a casualty ordinarily covered by insurance
required to be carried by Lessor under the Lease.

               B. In the event of damaged to the Premises which is not required
to be covered by insurance, and is not covered by insurance actually carried,
Lessor shall not have the right to terminate the Lease (i) if the damage is
relatively minor (e.g., repair or restoration would take fewer than sixty (60)
days or it would cost less than ten percent (10%) of the replacement cost of the
Premises) or (ii) if Lessee agrees to pay the cost of repair in excess of ten
percent (10%) of the then replacement cost of the Premises.

               C. If the Premises are damaged by any peril and Lessor does not
elect to terminate the Lease or is not entitled to terminate the Lease pursuant
to its terms, then as soon as reasonably practicable, Lessor shall furnish
Lessee with a written opinion of Lessor's architect or construction consultant
as to when the restoration work required of Lessor may be completed. Lessee
shall have the option to terminate the Lease in the event any of the following
occurs, which option may be exercised by delivery to Lessor of a written notice
of election to terminate within thirty (30) days after Lessee receives from
Lessor the estimate of the time needed to complete such restoration: (i) the
Premises, with reasonable diligence, cannot be fully repaired


                                       5


<PAGE>   50
by Lessor within one hundred twenty (120) days after the damage or destruction;
or (ii) if the Premises are damaged by any peril within twelve (12) months of
the last day of term, and cannot be substantially restored within sixty (60)
days after the date of such damage.

               D. If the Lease is not terminated by Lessor or Lessee as provided
herein, Lessor shall restore the Premises and all tenant improvements installed
by Lessor to the condition in which they existed immediately prior to the
casualty.

        17. TAXES AND ASSESSMENTS: Notwithstanding anything to the contrary
contained in the Lease, if any assessments are levied against the Project or
Premises, Lessor may elect to either pay the assessment in full or allow the
assessment to go to bond and pay it in installments. In either case, however,
Lessee shall only be obligated to pay to Lessor with regard to such assessment,
a sum equal to that which would have been payable by Lessee with respect to
installments of principal and interest which would have become due during the
Lease term had Lessor allowed the assessment to go to bond.

        18. LESSEE'S RIGHT TO BRING TAX PROCEEDING: Lessee shall have the right
to consent, in good faith, the validity or the amount of any tax or assessment
levied against the entire demised premises by such appellate or other
proceedings as may be appropriate in the jurisdiction, and may defer payment of
such obligation, pay same under protest, or take such steps as Lessee may deem
appropriate. Lessor shall cooperate in the institution and prosecution of any
such proceedings, including permitting the action to be brought in the name of
the Lessor, and will execute any documents required therefor. The expense of
such proceedings shall be borne by the Lessee and any refunds or rebates secured
shall belong to the Lessee.

        19. LESSOR'S REPRESENTATIONS: To the best of Lessor's knowledge: (i) the
Premises and the operations conducted thereon prior to the Commencement Date are
in compliance with all Applicable Laws regarding Hazardous Materials; and (ii)
handling, transportation, storage, treatment, disposal, release or use of
Hazardous Materials that has occurred on or about the Premises or the Project or
the soil, groundwater or surface water thereof prior to the Commencement Date
have been in compliance with all Applicable Laws. Also to the best of Lessor's
knowledge, no litigation has been brought or threatened, nor any settlements
reached with any governmental or private party, concerning the actual or alleged
presence or Hazardous Materials on or about the Premises or Project, or the
soil, groundwater or surface water thereof, nor has Lessor received any notice
of any violation or alleged violation of any Applicable Laws, pending claims or
pending investigations with respect to the presence of Hazardous Materials on or
about the Premises or Project, or the soil, groundwater or surface water
thereof. Lessee, its agents, employees, contractors, officers, directors,
shareholders, successors or assigns shall not be responsible for, and Lessor
shall indemnify, defend with counsel reasonably acceptable to Lessee and hold
Lessee harmless against, (i) any claim, remediation obligation, investigation
obligation, liability, cause of action, penalty, attorneys' fee, consultants'
cost, expense or damage owing or alleged to be owing with respect to any
Hazardous Material present on or about the Premises or the Project, or the soil,
groundwater or surface water thereof; or (ii) the removal, investigation,
monitoring or remediation of any Hazardous Material present on or about the
Premises or the Project, or the soil, groundwater or surface water thereof with
respect to the Premises or the Project and caused by any source, including third
parties, other than Lessee, prior 


                                       6


<PAGE>   51
the Commencement Date. Lessor's representations under this Paragraph shall
survive the termination of the Lease.

        20. RECOGNITION: Lessor hereby represents that as of the date of both
parties' execution of the Lease, there is no loan, mortgage, deed of trust or
ground lease affecting the Premises or Project other than a first deed of trust
in favor of Home Savings & Loan ("Lender"). As a condition to Lessee's
obligations under this Lease, Lessor, within a reasonable period of time after
the date of execution of this Lease by both parties, but in any event not later
than ninety (90) days after that execution date, shall provide Lessee with a
recognition and non-disturbance agreement, in form reasonably satisfactory to
Lender, Lessor and Lessee, from Lender providing for recognition of Lessee's
interests hereunder in the event of a foreclosure of Lender's security interest.


   
LESSOR:                                        LESSEE:

MV 440, INC.,                                  QUICKTURN SYSTEMS, INC.
a California corporation                       a California corporation


By: /s/ William J. Hurwick                     By: /s/ Dennis Favero
   -------------------------------                ------------------------------
Printed                                        Printed 
Name:  William J. Hurwick                      Name: Dennis Favero
     -----------------------------                  ----------------------------
Title:                                         Title: VP/CFO
      ----------------------------                   ---------------------------
Date:  3/17/93                                 Date:  3/17/93
     -------------------------------                ----------------------------
    


                                       7



<PAGE>   1
                                                                   EXHIBIT 10.13



PRICING INTRODUCTION

The following pricing guide is intended to help select the correct product,
configuration, and pricing to meet the different needs of your customer.

Marimba uses a concept called value based pricing. A Licensee who receives more
value from Castanet will pay more than those where the value of Castanet is
less. "Value" is determined by the number of Applications, the number of
Endpoints deployed, and whether the Tuner is customized to the Licensee's
specific needs.

For the Infrastructure Suite, there are two primary pricing models to work from:
Enterprise pricing and Internet pricing.

INFRASTRUCTURE SUITE PRICING MODELS

ENTERPRISE PRICING: The Enterprise pricing model refers to any use of Castanet
in a business to business application. The Endpoints for distribution are known
to the Licensee and can include employees, customers, business partners, etc.
Examples include all intra-company uses and other business to business uses such
as car manufacturer to supplier or car dealer, or an airline to its travel
agents.

Most sales opportunities will be priced based on Enterprise pricing; thus this
pricing should be discussed first as a matter of practice. While there are many
indexes upon which to determine value for the Enterprise, Marimba has chosen
scalability and the ability to customize as the value indexes for pricing for
the Enterprise. Enterprise pricing is based first on the number of access
licenses required, and second, on whether the Licensee will customize the Tuner
for use by third-parties.

Scalability:

Access licenses are the basic building block for determining pricing. Any
computer ("Endpoint") receiving updates from Castanet must be licensed with an
access license. One benefit of this pricing is that there is no pricing impact
of architecture decisions on how to install Castanet Enterprise Transmitters.
These servers (Transmitters) do not receive Castanet updates as Endpoints and
thus are not charged for. The cost is placed on the Endpoint access license and
not the support infrastructure. There are two primary categories of access
licenses: User Access License (UAL) and Application Access License (AAL).

        User Access Licenses: A User Access License permits use of the Castanet
        Infrastructure Suite to deploy and manage applications or other data for
        use by one user on one Endpoint.

        Application Access Licenses: An Application Access License permits use
        of the Castanet Infrastructure Suite to deploy and manage a Single
        Application for use by one user on one Endpoint. A "Single Application"
        is one Castanet channel containing data or an application with one
        specific purpose or related set of functionality. By way of example
        only, a word-processor and a spreadsheet program would not constitute a
        Single Application even if both were run as a single Castanet channel or
        were incorporated into the same general suite of applications. The name
        and primary function of each Single Application must be designated in
        the Order Form.


                                                                          Page 1




<PAGE>   2

        With both UALs and AALs, an additional license is required for each
        individual user of an Endpoint.

The concept of Access Licenses also applies to computer servers which act as
Endpoints.

        Castanet Server Access License (SAL): A Server Access License permits
        use of the Castanet Infrastructure Suite to deploy and manage
        applications or other data on one Endpoint computer server. An Endpoint
        computer server licensed with an SAL may not deploy or manage
        applications or other data on Endpoints for which Licensee has not
        purchased an Access License. Some examples of Endpoint computer servers
        are Database Servers, Web Servers, Production Line Servers, File Servers
        and Point of Sale Servers.

        Castanet Server Application Access License (SAAL): A Server Application
        Access License permits use of the Castanet Infrastructure Suite to
        deploy and manage a Single Application on one Endpoint computer server.
        An Endpoint computer server licensed with an SAAL may not deploy or
        manage applications or other data on Endpoints for which Licensee has
        not purchased an Access License. A "Single Application" is defined
        above.

The Ability to Customize:

There is significant value in customizing the Tuner and thereafter distributing
the customized Tuner to employees or third parties, and therefore, the Licensee
must pay a premium for such usage. If the Licensee has a need to customize the
Tuner for internal deployment, they must purchase a Tuner Customization Kit. If
the deployment will be external, the Licensee is required to customize the Tuner
and must purchase a Custom Redistribution License. Page 3 of this guide provides
examples of when you would need either of these licenses.

INTERNET PRICING: The Internet pricing model may only be used when the Endpoint
is unknown and uncontrolled by the Licensee. Examples include a news service and
its readers or a stock price tracker and its users.

To qualify for an Internet Edition Transmitter, a channel:

1.   Must be on a publicly available Transmitter. That is, any Internet user can
     access the Transmitter and its channels.
2.   Must not require identification or registration of any kind.
3.   Must not require payment for access to or use of the channels.


        Infrastructure Suite - Internet Edition (NET): Internet pricing is based
        upon the number of Castanet Internet Edition Transmitters required to
        serve the user base. An Internet Edition Transmitter is governed by the
        computing hardware and the bandwidth of the network connection and not
        limited by the Transmitter software.

        Infrastructure Suite - Internet Single Application Edition (ISA): This
        is similar to the Infrastructure Suite - Internet Single Edition except
        that the Internet Single Application Edition Transmitter may make only
        one Single Application available through the Internet.


MANAGEMENT AND PRODUCTION SUITE PRICING MODEL:




                                                                          Page 2

<PAGE>   3

MANAGEMENT SUITE PRICING: The Management Suite pricing model is per "User". Each
"User" who has any access to any of the components of the Management Suite must
have a separate license.

PRODUCTION SUITE PRICING: The Production Suite pricing model is per "User". Each
"User" who has any access to any of the components of the Production Suite must
have a separate license.



                                                                          Page 3

<PAGE>   4
ISSUE #1   SELLING REQUIREMENTS


        What products are required when selling a Castanet solution?

                              Employee/Non-Employee

                                    REQUIRED:
                            Infrastructure Suite and
                                Management Suite

A Management Suite (CMS) must be part of every CIS order. This is because the
Tuner Packager (part of the CMS) is required to generate a Tuner that updates
from the Licensee's own Transmitter, thus providing full control of when updates
occur.



ISSUE #2  DISTRIBUTING TUNERS


        What does the Licensee need in order to distribute Tuners?

             
               To: Employee                   To: Non-Employee

                 REQUIRED:                        REQUIRED:

                 nothing                            CRL
                                           (Custom Redistribution
                                                  License)


In other words, if your customer is going to be deploying Tuners outside of
their organization, they need a CRL. In addition, it is important to note that
the Licensee is required to re-brand the Tuner when deploying to non-employees
(see below for further explanation).


ISSUE #3  BRANDING TUNERS


              To: Employee                   To: Non-Employee

               REQUIRED:                        REQUIRED:

                nothing                            CRL
                                          (Custom Redistribution
               OPTIONAL:                        License)

        Tuner Customization Kit


                                                                          Page 4
<PAGE>   5


What is the CUSTOM REDISTRIBUTION LICENSE or CRL?

        The CRL consists of

                A.      a written CRL license which permits a customer to
                        redistribute a Tuner to non-employees (sometimes
                        referred to as "third-parties") and

                B.      the Tuner Customization Kit.

        A.  What is in the CRL license?

                1.      a license grant which permits distribution of customized
                        Tuners,

                2.      user interface branding guidelines

                3.      additional provisions which protect Marimba from any
                        liability which might arise from distribution of the
                        Tuner

                        For example, if the customer is a brokerage house
                        distributing a trading application as a channel in the
                        Tuner, we need to protect Marimba from any potential
                        liability arising from failure of that application, such
                        as if it fails to properly execute trades.

        B. What is the Tuner Customization Kit?

                1.      a set of documentation which provides "how to" technical
                        guidance on how to customize or "brand" the user
                        interface of the Tuner.

                2.      additional Castanet software components which are used
                        when publishing the customized Tuner.

The Tuner Customization Kit is included with the CRL and is available for sale
separately to customers who do not need a CRL because they are deploying Tuners
only to employees.

Branding Guidelines are required with the CRL, what are they?

The CRL license contains user interface requirements (sometimes referred to as
"branding guidelines") which require that certain changes be made to the user
interface of the Tuner before it may be deployed to a non-employee. These user
interface requirements are necessary so that users of the Tuner know who
provided the software they are using and who to call when they have trouble with
their application. (For example, if the brokerage house customer has trouble
launching their application, that customer will know to call the brokerage house
and not Marimba.) In addition, the branding guidelines serve to protect
Marimba's own branding and user-interface quality.

Is the CRL a term license?

Yes. A CRL limits the time the licensee can redistribute tuners to third-party
endpoints for a three year term. After expiration of the term, the customer
either needs to renew the CRL or cease distribution of additional Tuners to
third-parties. Termination of the CRL will not affect any Tuners which have
already been deployed by the customer.



                                                                          Page 5


<PAGE>   6
                            MARIMBA PRICE LIST NOTES

================================================================================
                              INFRASTRUCTURE SUITES
================================================================================

Enterprise Editions:

All business to business applications of Castanet are to be priced under the
Enterprise pricing model. Some examples of business to business applications
are: A supplier to a business customer, a car manufacturer to car dealer, and
all intra-company uses.

Internet Editions:
Use the Internet pricing model only if the Licensee's channel:

1.      Is made publicly available (i.e., any Internet user can access the
        Transmitter and its channels)

2.      Does not require identification or registration of any kind

3.      Does not require payment for access to or use of the channels


                               ENTERPRISE EDITIONS


CASTANET INFRASTRUCTURE SUITE - USER ACCESS LICENSE (CIS-UAL-3.2-U):
Components include:

    o   Castanet Enterprise Transmitter

    o   Castanet Tuner

    o   Transmitter Administrator

    o   Publisher

    o   Channel Copier

    o   License Installer

    o   Certificate Manager

    o   Gateway

    o   Proxy

NOTE: Includes the right to install and deploy as many copies of the Castanet
Infrastructure Suite components (for use only by Licensee's employees) as
necessary to support the purchased Access Licenses.

SUPPORTED PLATFORMS: Windows 95 (except for Proxy and Gateway), Windows NT 4.0,
and Solaris 2.6 and 2.5.1, HP-UX, AIX*

PRODUCT STATUS: Shipping, *Will ship when available.

PRE-REQUISITES: Castanet Management Suite

US MINIMUM ORDER REQUIREMENTS: First order must be for a minimum of 200 User
Access Licenses.

CASTANET INFRASTRUCTURE SUITE - APPLICATION ACCESS LICENSE (CIS-AAL-3.2-U):
Components include:

    o   Castanet Enterprise Transmitter

    o   Castanet Tuner

    o   Transmitter Administrator

    o   Publisher

    o   Channel Copier

    o   License Installer

    o   Certificate Manager

    o   Gateway

    o   Proxy



                                                                          Page 6

<PAGE>   7

NOTE: Includes the right to install and deploy as many copies of the Castanet
Infrastructure Suite components (for use only by Licensee's employees) as
necessary to support the purchased Access Licenses.

SUPPORTED PLATFORMS: Windows 95 (except for Proxy and Gateway), Windows NT 4.0,
and Solaris 2.6 and 2.5.1, HP-UX, AIX*

PRODUCT STATUS: Shipping, *Will ship when available.

PRE-REQUISITES: Castanet Management Suite

US MINIMUM ORDER REQUIREMENTS: First order must be for a minimum of 500
Application Access Licenses.

CASTANET INFRASTRUCTURE SUITE - SERVER ACCESS LICENSE (CIS-SAL-3.2-U):
Components include:
    o   Castanet Enterprise Transmitter

    o   Castanet Tuner

    o   Transmitter Administrator

    o   Publisher

    o   Channel Copier

    o   License Installer

    o   Certificate Manager

    o   Gateway

    o   Proxy

NOTE: Includes the right to install and deploy as many copies of the Castanet
Infrastructure Suite components (for use only by Licensee's employees) as
necessary to support the purchased Access Licenses. A Server Access License
permits use of the Castanet Infrastructure Suite to deploy and manage
applications or other data to one Endpoint computer server. An Endpoint computer
server licensed with an SAL may not deploy or manage applications or other data
on Endpoints for which Licensee has not purchased an Access License. Some
examples of Endpoint computer servers are Database Servers, Web Servers,
Production Line Servers, File Servers and Point of Sale Servers.

SUPPORTED PLATFORMS: Windows 95 (except for Proxy and Gateway), Windows NT 4.0,
and Solaris 2.6 and 2.5.1, HP-UX, AIX*

PRODUCT STATUS: Shipping, *Will ship when available.

PRE-REQUISITES: Castanet Management Suite 

US MINIMUM ORDER REQUIREMENTS: First order must be for a minimum of 20 Server
Access Licenses.

CASTANET INFRASTRUCTURE SUITE - SERVER APPLICATION ACCESS LICENSE
(CIS-SAAL-3.2-U):
Components include:

    o   Castanet Enterprise Transmitter

    o   Castanet Tuner

    o   Transmitter Administrator

    o   Publisher

    o   Channel Copier

    o   License Installer

    o   Certificate Manager

    o   Gateway

    o   Proxy

NOTE: Includes the right to install and deploy as many copies of the Castanet
Infrastructure Suite components (for use by Licensee's employees) as necessary
to support the purchased Access Licenses. A Server Access License permits use of
the Castanet Infrastructure Suite to deploy and manage a Single Application on
one Endpoint computer server. An Endpoint computer server licensed with an SAAL
may not deploy or manage applications or other data on Endpoints for which
Licensee has not purchased an Access License. Some examples of Endpoint computer



                                                                          Page 7
<PAGE>   8

servers are Database Servers, Web Servers, Production Line Servers, File Servers
and Point of Sale Servers. 

SUPPORTED PLATFORMS: Windows 95 (except for Proxy and Gateway), Windows NT 4.0,
and Solaris 2.6 and 2.5.1, HP-UX, AIX* 

PRODUCT STATUS: Shipping, *Will ship when available. 

PRE-REQUISITES: Castanet Management Suite


US MINIMUM ORDER REQUIREMENTS: First order must be for a minimum of 20 Server
Application Access Licenses.


                                INTERNET EDITIONS


CASTANET INFRASTRUCTURE SUITE - INTERNET EDITION (CIS-NET-3.2-U):
Components include;

    o   One Castanet Internet Edition Transmitter

    o   Castanet Tuner

    o   Transmitter Administrator

    o   Publisher

    o   Channel Copier

    o   License Installer

    o   Certificate Manager

    o   Gateway

    o   Proxy

NOTE: This Suite includes one Castanet Internet Edition Transmitter. However,
the Licensee may make as many copies of the Proxy and Gateway components as
necessary to support the use of the Internet Edition Transmitter. The users of
the application must be "unknown" and this must not represent a
business-to-business relationship. In addition, the Applications published on
this Transmitter must be publicly available, not require any kind of access
control, and be free to users. Reporting of the internet address to Marimba is
required. 

SUPPORTED PLATFORMS: Windows 95 (except for Proxy and Gateway), Windows NT 4.0,
and Solaris 2.6 and 2.5.1, HP-UX, AIX* 

PRODUCT STATUS: Shipping, *Will ship when available.

CASTANET INFRASTRUCTURE SUITE - INTERNET SINGLE APPLICATION EDITION
(CIS-ISA-3.2-U) includes:
Components include:

    o   One Castanet Internet Transmitter

    o   Transmitter Administrator

    o   Publisher

    o   Channel Copier

    o   License Installer

    o   Certificate Manager

    o   Gateway

    o   Proxy

NOTE: This Suite includes one Castanet Internet Edition Transmitter to serve the
Internet with respect to a Single Application; however, the Licensee may make as
many copies of the Proxy and Gateway components as necessary to support the use
of the Internet Single Application Edition Transmitter. The users of the
application must be "unknown" and this must not represent a business-to-business
relationship. In addition, the Application published on this Transmitter must be
publicly available, not require any kind of access control, and be free to
users. Reporting of the internet address to Marimba is required, and the name
and primary functionality of the Single Application must be designated in the
Order Form. 

SUPPORTED PLATFORMS: Windows 95 (except for Proxy and Gateway), Windows NT 4.0, 
and Solaris 2.6 and 2.5.1, HP-UX, AIX* 



                                                                          Page 8
<PAGE>   9

PRODUCT STATUS: Shipping, *Will ship when available.


                                                                          Page 9
<PAGE>   10
================================================================================
                        MANAGEMENT AND PRODUCTION SUITES
================================================================================

CASTANET MANAGEMENT SUITE (CMS-3.2-U):
Components include:

    o   Tuner Packager
 
    o   Channel Copier

    o   Transmitter Administrator Pro

    o   Transmitter Reporter

NOTE: This Suite is licensed on a per "User" basis; any employee with access to
the software is a "User". Administrators who wish to package Tuners, copy
channels, create administrative reports or perform administration of a
Transmitter would each use one Suite. IMPORTANT: The Tuner Packager may only be
used to package Tuners for distribution to Licensee's employees. (A Custom
Redistribution License would be needed to distribute a packaged Tuner to third
parties)

SUPPORTED PLATFORMS: Windows 95, Windows NT 4.0, and Solaris 2.6 and 2.5.1,
HP-UX, AIX*

PRODUCT STATUS: Licensee must accept partial shipments. *Will ship when
available

PRE-REQUISITES: Must have purchased a Castanet Infrastructure Suite


CASTANET PRODUCTION SUITE (CPS-3.2-U):
Components include:
    o   Publisher

    o   Application Packager

        o  Application Packager for Microsoft Windows(TM) Applications

        o  Application Packager for Microsoft Visual Basic(TM) Applications

        o  File Packager

NOTE: This Suite is licensed on a per "User" basis; any employee with access to
the software is a "User". Developers who wish to create and publish Channels for
either Java or native code would each use one Suite.

SUPPORTED PLATFORMS: Windows 95, Windows NT 4.0, and Solaris 2.6 and 2.5.1,
HP-UX, AIX* (except for the Packager for Windows(TM) and Visual Basic(TM)
Applications)

PRODUCT STATUS: Licensee must accept partial shipments. *Will ship when
available

PRE-REQUISITES: Must have purchased a Castanet Infrastructure Suite



                                                                         Page 10
<PAGE>   11
================================================================================
                             REDISTRIBUTION LICENSES
================================================================================

CASTANET CUSTOM REDISTRIBUTION LICENSE (CRL-3.2-U):
Includes:

    o   Tuner Customization Guide

    o   License to modify the Castanet-branded UI and redistribute a customized
        or packaged Tuner to Endpoints who are not employees.

    o   Available only pursuant to a special separate written Marimba License
        Agreement.

    o   For 3 year term only

NOTE: Licensee must adhere to certain important branding and end-user licensing
guidelines when redistributing customized Tuners.

SUPPORTED PLATFORMS: N/A

PRODUCT STATUS: Shipping

PRE-REQUISITES: Must have purchased a Castanet Infrastructure Suite, Castanet
Management Suite, and Maintenance.


CASTANET REPEATER REDISTRIBUTION LICENSE (RRL-3.2-U):

    o   Allows Licensee to redistribute one limited Transmitter outside its
        firewall.

    o   Available only pursuant to a special separate written Marimba License
        Agreement.

NOTE: This limited Transmitter is for use on third-party premises to replicate
Castanet channels from the Licensee's organization to Tuners within the
third-party domain. The RRL provides third-party control over deployed
applications and reduces third-party cross-firewall traffic. The Castanet
Repeater Redistribution License is not available for Internet Edition
Transmitters.

SUPPORTED PLATFORMS: Windows 95, Windows NT 4.0, and Solaris 2.6 and 2.5.1,
HP-UX, AIX*

PRODUCT STATUS: Shipping, *Will ship when available.

PRE-REQUISITES: Must have purchased a Castanet Infrastructure Suite



                                                                         Page 11
<PAGE>   12
================================================================================
                                 OTHER PRODUCTS
================================================================================


CASTANET TUNER CUSTOMIZATION KIT (TCK-3.2-U):
Includes:

    o   Tuner Customization Guide

    o   License to modify the Castanet-branded UI for internal use only.

    o   Available only pursuant to a special separate written Marimba License
        Agreement.

NOTE: Licensee must adhere to certain important branding and end-user licensing
guidelines when redistributing customized Tuners.

SUPPORTED PLATFORMS: N/A

PRODUCT STATUS: Shipping

PRE-REQUISITES: Must have purchased a Castanet Infrastructure Suite, Castanet
Management Suite, and Bronze/Silver/Gold Maintenance.


CASTANET MEDIA KIT (MED-CAST-3.2-U):

    o   Media and documentation for Castanet

SUPPORTED PLATFORMS: Windows 95, Windows NT 4.0, and Solaris 2.6 and 2.5.1,
HP-UX, AIX*

PRODUCT STATUS: Shipping, *Will ship when available.

CASTANET QUICKSTART PAK (NON-PRODUCTION KIT) (QKS-3.2-U):
Components include:

    o   One Infrastructure Suite License

        o   License for One Developer and Ten User Access Licenses 
            (Non-production use only)

    o   One Production Suite License

    o   One Management Suite License

    o   Five Technical Support Incidents

    o   License term is for one year. No Maintenance or upgrades available.

NOTE: Licensee may use only for development (pre-production) purposes. The
Licensee cannot extend this license or upgrade it for use in full production.

SUPPORTED PLATFORMS: Windows 95, Windows NT 4.0, and Solaris 2.6 and 2.5.1,
HP-UX, AIX*

PRODUCT STATUS: Shipping, *Will ship when available.

US MINIMUM ORDER REQUIREMENT: None.



                                                                         Page 12

<PAGE>   13
================================================================================
                                       SDK
================================================================================


CASTANET UPDATENOW SDK (UPDSDK-3.2-U):
Components include:

    o   Technical documentation, examples, UpdateNow SDK libraries

        o    Unlimited number of developers

        o    Limit to embed SDK in only one application

        o    One year development only license for UpdateNow SDK for Java and
             C implementations

        o    Includes Maintenance for one year

        o    One year term only for use of SDK and distribution of SDK enabled
             copies to third parties

NOTE: Licensee may only use the UpdateNow SDK for development of one
application. Licensee must purchase Castanet UpdateNow SDK AALs (rather than
Infrastructure Suite - User Access Licenses or Application Access Licenses) in
order to distribute the application developed. 

SUPPORTED PLATFORMS: Windows 95 and Windows NT 4.0 (Native and Java), and
Solaris 2.6 and 2.5.1(Java only), HP-UX, AIX*

PRODUCT STATUS: Shipping

PRE-REQUISITES: Must have purchased a QuickStart Pak (for Pilot use) or an SDK
AAL (as opposed to a regular AAL or UAL to distribute each program).



                                                                         Page 13

<PAGE>   14
BELOW ARE THE MINIMUM ORDER GUIDELINES WHEN A CUSTOMER BUYS DIRECT FROM MARIMBA.
SHOULD YOUR CUSTOMER NEED TO PURCHASE LOWER QUANTITIES, PLEASE CALL YOUR MARIMBA
CHANNEL REP.

NOTES:

o   Initial purchase of the Castanet Infrastructure Suite - User Access Licenses
    must be purchased in blocks of 200 UALs at a time. Additional purchases must
    be in blocks of 100 UALs.

o   Initial purchase of the Castanet Infrastructure Suite - Server Access
    Licenses must be purchased in blocks of 20 Licenses at a time. Additional
    purchases must be in blocks of 5 Server Licenses.

o   Initial minimum purchase requirements apply to the entire order and
    therefore it is only necessary to fulfill one (i.e. Server or UAL) of the US
    Minimum Order requirements per order.

o   Initial purchase of the Castanet Infrastructure Suite - Application Access
    Licenses must be purchased in of 500 Access Licenses at a time. Additional
    purchases must be in blocks of 100 Application Access Licenses.

o   Initial purchase of the Castanet Infrastructure Suite - Server Application
    Access Licenses must be purchased in blocks of 20 SAALs at a time.
    Additional purchases must be in blocks of 5 SAALs.

SHIPPING
Licensee must accept partial shipments and is responsible for all costs incurred
from shipping taxes and any customs fees.



                                                                         Page 14

<PAGE>   15
                                    GLOSSARY

Application Access License (AAL): An Application Access License permits use of
the Castanet Infrastructure Suite to deploy and manage a Single Application for
use by one user on one Endpoint. A separate AAL is required for each individual
user of an Endpoint computer.

Castanet Custom Redistribution License (CRL): The Castanet Custom Redistribution
License consists of three parts: (1) technical documentation which explains how
to configure the UI of the Tuner, and (2) a paper license which allows the
Licensee to redistribute modified or configured Tuners to Endpoints which are
not operated by employees, and (3) templates for Channel Manager and graphics.
Licensee must adhere to certain important branding and end-user licensing
guidelines when redistributing customized Tuners. Remember: the right to
redistribute a standard Tuner will expire in 3 years.

Castanet Tuner Customization Kit (TCK): The Tuner Customization Kit consists of
three parts: (1) technical documentation which explains how to configure the UI
of the Tuner, (2) a paper license which allows the Licensee to deploy modified
or configured Tuners to Endpoints which are operated by employees, and (3)
templates for Channel Manager and graphics. Licensee must adhere to certain
important branding and end-user licensing guidelines when deploying customized
Tuners.

Repeater Redistribution License (RRL): Repeaters are limited functionality
Transmitters which may be redistributed by Licensee. They are limited because
they may only be used to repeat or re-transmit data received by the Repeater
directly from Licensee. They are used to replicate and redirect Castanet
channels to Tuners as well as to allow Castanet to scale. Repeaters are not
available for Internet Edition Transmitters. Licensee needs a Repeater only when
they want to place a transmitter on some third-party's premises.

Castanet Gateway: The Castanet Transmitter Gateway allows a Transmitter and HTTP
web server to share the same port.

Castanet Infrastructure Suite: The Castanet Infrastructure Suite consists of a
Castanet Enterprise Transmitter, a Castanet Tuner, and other related Castanet
software components. Licensee may make as many copies (for use by employees
only) of the components of the Castanet Infrastructure Suite.

Castanet Management Suite (CMS): This Suite includes a set of components that
are licensed per "User". Administrators (aka "Users") who wish to package
Tuners, Copy Channels, Create Administrative Reports or perform administration
of a Transmitter would use this Suite.

Castanet Production Suite (CPS): This Suite includes a set of components that
are licensed per "User". Developers (aka "Users") who wish to publish and create
Channels in either Java or native code would use this Suite.

Castanet Proxy: The Castanet Proxy runs on a company's Internet firewall machine
and reduces the load on the firewall. The Proxy caches frequently requested
channel files while allowing Tuners within the company to continue communicating
with Transmitters.

Endpoint: "Endpoint" means any computer or other device executing a Castanet
Tuner or other software capable of operating with a Castanet Enterprise
Transmitter. Remember: A separate Access License is required for each individual
user of an Endpoint.

Enterprise Transmitter: The Castanet Enterprise Transmitter is software that
runs on a computer server and serves Castanet channels to Tuners.


                                                                         Page 15

<PAGE>   16

Internet Edition Transmitter: The Castanet Internet Edition Transmitter is
software that runs on a computer server and serves Castanet channels to Tuners
on the general Internet. Such channels must be accessible by any Internet user,
not require identification or registration of any kind, and not require payment
for access to or use of the channels. Unlike the Enterprise Transmitter, the
Licensee must pay Marimba for each copy of the Castanet Internet Edition
Transmitter it needs to support its channels. If the Licensee purchases the
Castanet Infrastructure Suite-Internet Single Application Edition, then it may
only make a Single Application generally available through the Internet.

Castanet QuickStart Pak: QuickStart Pak is a non-production version of Castanet
that is geared toward developers looking for a supported evaluation experience.

Server Access License (SAL): A Server Access License permits use of the Castanet
Infrastructure Suite to deploy and manage applications or other data on one
Endpoint computer server. An Endpoint computer server licensed with an SAL may
not deploy or manage applications or other data on Endpoints for which Licensee
has not purchased an Access License. Examples of Endpoint computer servers
include factory process controllers, Point of Sale servers, database servers,
workgroup servers, etc.

Server Application Access License (SAAL): A Server Application Access License
permits use of the Castanet Infrastructure Suite to deploy and manage a Single
Application on one Endpoint computer server. An Endpoint computer server
licensed with an SAAL may not deploy or manage applications or other data on
Endpoints for which Licensee has not purchased an Access License.

Single Application: . A "Single Application" is one Castanet channel containing
data or an application with one specific purpose or related set of
functionality. By way of example only, a word-processor and a spreadsheet
program would not constitute a Single Application even if both were run as a
single Castanet channel or were incorporated into the same general suite of
applications. The name of each Single Application and its primary function must
be designated in the Order Form or ELA.

UpdateNow SDK: A Licensee who is interested in embedding Castanet capabilities
directly into their application should be directed to the UpdateNow SDK. The
UpdateNow SDK is a development kit which includes technical documentation,
examples, and an UpdateNow library. The library is available as Java class files
or as a Windows DLL (dynamic link library). Once the library is integrated into
a C/C++ or Java application, that program then inherits tuner-like functionality
and works directly with the Transmitters. (The same Transmitter can also
communicate with Castanet Tuners.) The UpdateNow SDK is available as a 32-bit
Windows DLL as well as a Java library. Memory and hard-disk requirements will
depend on the application. A Licensee must purchase a separate UpdateNow SDK for
each program into which the SDK is embedded. At the time of purchase in addition
to buying the UpdateNow SDK, a Licensee must purchase either a QuickStart Pak
(for Pilot use) or the minimum number of SDK AALs (as opposed to a regular AAL
or UAL) to distribute each program. A separate SDK AAL is required for each copy
of an SDK enabled application which is either being used by the Licensee or
distributed by the Licensee to third parties. The SDK is licensed on a one year
term basis only, which means the Licensee may not continue to use the SDK itself
or distribute the SDK enabled applications beyond the expiration of the term.

User Access License (UAL): A User Access License permits use of the Castanet
Infrastructure Suite to deploy and manage applications or other data for use by
one user on one Endpoint.



                                                                         Page 16
<PAGE>   17
SUMMARY OF CHANGES IN THE MARIMBA 3.2 PRICE LIST

1.  Effective with the Castanet 3.2 release, Bongo will no longer be offered as
    part of the Production Suite, QuickStart Pak or as a standalone product.
    Instead it will be publicly available at www.freebongo.org. This public site
    will contain the source and object code for Bongo and its Widget Set. In
    this way, Bongo will evolve according to the needs of the developer
    community, making it an even more powerful GUI-building tool.

2.  The Castanet Customization License name has been changed to the Tuner
    Customization Kit The new part number is TCK-3.2. This change was made in
    order to avoid confusion between the Customization License and the Custom
    Redistribution License. In addition, the TCK is considered to be a "kit" not
    a "license" and thus we felt a name change could best describe the product.

3.  Given cost increases in providing top-quality services, the following prices
    are in effect:

          o    Pricing for US Castanet Architectural Design Services has been
               changed to [$***]+.

          o    Pricing for US Castanet Implementation Services has been changed
               to [$***]+.

          o    Pricing for US Onsite Training has been changed to [$***]+.

4.  To simplify the licensing of Castanet, the Standard Redistribution License
    is no longer available as a product from Marimba, Inc.



- --------
+ CONFIDENTIAL TREATMENT REQUESTED. CONFIDENTIAL PORTION HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.



                                                                         Page 17
<PAGE>   18
<TABLE>
<CAPTION>
PRICE LIST VERSION 3.2 A EFFECTIVE NOVEMBER 23, 1998 WORLDWIDE RESELLERS                       MARIMBA, INC.
                                                                          VERSION      PART NUMBER         PRICE*
DOMESTIC
<S>                                                                       <C>          <C>                 <C>
ENTERPRISE LICENSES

CASTANET INFRASTRUCTURE SUITE-USER ACCESS LICENSE
Castanet Infrastructure Suite-User Access License                           3.2        CIS-UAL-3.2-U       [$ ***]*
                                                                                                           ------

CASTANET INFRASTRUCTURE SUITE-SERVER ACCESS LICENSE
Castanet Infrastructure Suite-Server Access License                         3.2        CIS-SAL-3.2-U       [$ ***]*
                                                                                                           ------

CASTANET INFRASTRUCTURE SUITE-APPLICATION ACCESS LICENSE
Castanet Infrastructure Suite-Application Access License                    3.2        CIS-AAL-3.2-U       [$ ***]*
                                                                                                           ------

CASTANET INFRASTRUCTURE SUITE-SERVER APPLICATION ACCESS LICENSE
Castanet Infrastructure Suite-Server Application Access License             3.2        CIS-SAAL-3.2-U      [$ ***]*
                                                                                                           ------

INTERNET LICENSES

Castanet Infrastructure Suite-Internet  Edition                             3.2        CIS-NET-3.2-U       [$ ***]*
                                                                                                           ------
Castanet Infrastructure Suite- Internet  Single Application Edition         3.2        CIS-ISA-3.2-U       [$ ***]*
                                                                                                           ------

CASTANET MANAGEMENT SUITE
Castanet Management Suite                                                   3.2        CMS-3.2-U           [$ ***]*
                                                                                                           ------

CASTANET PRODUCTION SUITE
Castanet Production Suite                                                   3.2        CPS-3.2-U           [$ ***]*
                                                                                                           ------

CASTANET CUSTOMIZATION
Castanet Tuner Customization Kit                                            3.2        CRL-3.2-U           [$ ***]* Must obtain a  
                                                                                                           ------   signed Marimba 
                                                                                                                    Enterprise     
                                                                                                                    License        
                                                                                                                    Agreement      
                                                                                                                    
Castanet Customization License                                              3.2        TCK-3.2-U           [$ ***]* Must obtain a  
                                                                                                           ------   signed Marimba 
                                                                                                                    Enterprise     
CASTANET QUICKSTART PAK                                                                                             License        
Castanet QuickStart Pak                                                     3.2        QKS-3.2-U           [$ ***]* Agreement      
                                                                                                           ------   

CASTANET REPEATER REDISTRIBUTION LICENSE
Castanet Repeater Redistribution License                                    3.2        RRL-3.2-U           [$ ***]* Must obtain a 
                                                                                                           ------   signed Marimba
                                                                                                                    Enterprise
                                                                                                                    License
                                                                                                                    Agreement

CASTANET MEDIA KIT
Castanet Media Kit                                                          3.2        MED-CAST-3.2-U      [$ ***]*
                                                                                                           ------
</TABLE>



* CONFIDENTIAL TREATMENT REQUESTED. CONFIDENTIAL PORTION HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.



<PAGE>   19
<TABLE>
<CAPTION>
PRICE LIST VERSION 3.2 A EFFECTIVE NOVEMBER 23, 1998 WORLDWIDE RESELLERS                 MARIMBA, INC.
                                                                VERSION   PART NUMBER         PRICE*
<S>                                                             <C>       <C>                 <C>
DOMESTIC MAINTENANCE

SUBSCRIPTION SERVICE
Subscription Service                                                      SUBSCRIPTION-U      [*% of PRODUCT PRICE]*
                                                                                              ------
BRONZE SERVICE (MINIMUM $5,000)
Bronze Service                                                            BRONZE-U            [*% of PRODUCT PRICE]*
                                                                                              ------
Bronze Extra Point of Contact                                             BRZ-POC-U           [$ ***]*
                                                                                              ------
SILVER SERVICE (MINIMUM $25,000)
Silver Service                                                            SILVER-U            [*% of PRODUCT PRICE]*
                                                                                              ------
Silver Extra Point of Contact                                             SLV-POC-U           [$ ***]*
                                                                                              ------
GOLD SERVICE (MINIMUM $150,000)
Gold Service                                                              GOLD-U              [*% of PRODUCT PRICE]*
                                                                                              ------
Gold Extra Point of Contact                                               GLD-POC-U           [$ ***]*
                                                                                              ------

SUPPORT AND SERVICES

MARIMBA CONSULTING SERVICES

1 Day of Castanet Implementation Services                                 CON-IMP-U           [$ ***]* (Plus Expenses)
                                                                                              ------
1 Day of Architectural Design Services                                    CON-ARC-U           [$ ***]* (Plus Expenses)
                                                                                              ------
MARIMBA PAY PER CASE SUPPORT
Pay-Per-Case 10 Pak                                                       PPC-10-U            [$ ***]* 
                                                                                              ------
Pay-Per-Case 1 Call for Tuner only                                        PPC-TU-U            [$ ***]* 
                                                                                              ------
Pay-Per-Case  1 Call                                                      PPC-1-U             [$ ***]* 
                                                                                              ------
Pay-Per-Case 3 Call                                                       PPC-3-U             [$ ***]* 
                                                                                              ------
TRAINING

Castanet 3.x Upgrade Training Kit                                         UPG-TNG-3.2-U       [$ ***]* 
                                                                                              ------
1 Day of Training                                                         TNG-U               [$ ***]* 
                                                                                              ------
On-site Training Per day  for up to 12 students                           TNG-ONSTE-U         [$ ***]* (Plus Expenses)
                                                                                              ------
</TABLE>




* CONFIDENTIAL TREATMENT REQUESTED. CONFIDENTIAL PORTION HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.

<PAGE>   20
<TABLE>
<CAPTION>
PRICE LIST VERSION 3.2 A EFFECTIVE NOVEMBER 23, 1998 WORLDWIDE RESELLERS                 MARIMBA, INC.
                                                                       VERSION      PART NUMBER          PRICE*
<S>                                                                    <C>          <C>                  <C>
INTERNATIONAL (NON-U.S.)
CASTANET INFRASTRUCTURE SUITE-USER ACCESS LICENSE (INTL VERSION)

Castanet Infrastructure Suite-User Access License (Intl Version)          3.2        CIS-UAL-3.2-I       [$ ***]*
                                                                                                         ------

CASTANET INFRASTRUCTURE SUITE-SERVER ACCESS LICENSE (INTL VERSION)

Castanet Server Access License (Intl Version)                             3.2        CIS-SAL-3.2-I       [$ ***]*
                                                                                                         ------

CASTANET INFRASTRUCTURE SUITE-APPLICATION ACCESS LICENSE 
(INTL VERSION)
Castanet Infrastructure Suite-Application Access License 
(Intl Version)                                                            3.2        CIS-AAL-3.2-I       [$ ***]*
                                                                                                         ------

CASTANET INFRASTRUCTURE SUITE-SERVER APPLICATION ACCESS LICENSE 
(INTL VERSION)
Castanet Server Application Access License (Intl Version)                 3.2        CIS-SAAL-3.2-I      [$ ***]*
                                                                                                         ------

CASTANET INFRASTRUCTURE SUITE-INTERNET  EDITION (INTL VERSION)

Castanet Infrastructure Suite-Internet  Edition (Intl Version)            3.2        CIS-NET-3.2-I       [$ ***]*
                                                                                                         ------
Castanet Infrastructure Suite-Internet Single Application 
Edition (Intl Version)                                                    3.2        CIS-ISA-3.2-I       [$ ***]*
                                                                                                         ------

CASTANET MANAGEMENT SUITE-(INTL VERSION)
Castanet Management Suite-(Intl Version)                                  3.2        CMS-3.2-I           [$ ***]*
                                                                                                         ------
CASTANET PRODUCTION SUITE-(INTL VERSION)
Castanet Production Suite-(Intl Version)                                  3.2        CPS-3.2-I           [$ ***]*
                                                                                                         ------
CASTANET CUSTOMIZATION  (INTL VERSION)
Castanet Custom Redistribution License (Intl Version)                     3.2        CRL-3.2-I           [$ ***]* Must obtain a 
                                                                                                         ------   Marimba Enterprise
                                                                                                                  License Agreement


Castanet Tuner Customization Kit (Intl Version)                           3.2        TCK-3.2-I           [$ ***]* Must obtain a     
                                                                                                         ------   Marimba Enterprise
                                                                                                                  License Agreement 
                                                                                                                  
CASTANET QUICKSTART PAK (INTL VERSION)
Castanet QuickStart Pak (Intl Version)                                    3.2        QKS-3.2-I           [$ ***]*
                                                                                                         ------
CASTANET REPEATER REDISTRIBUTION LICENSE (INTL VERSION)
Castanet Repeater Redistribution License (Intl Version)                   3.2        RRL-3.2-I           [$ ***]* Must obtain a     
                                                                                                         ------   Marimba Enterprise
                                                                                                                  License Agreement 
                                                                                                                  
CASTANET MEDIA KIT (INTL VERSION)
Castanet Media Kit (Intl Version)                                         3.2        MED-CAST-3.2-I      [$ ***]*
                                                                                                         ------
</TABLE>



* CONFIDENTIAL TREATMENT REQUESTED. CONFIDENTIAL PORTION HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.

<PAGE>   21
<TABLE>
<CAPTION>
PRICE LIST VERSION 3.2 A EFFECTIVE NOVEMBER 23, 1998 WORLDWIDE RESELLERS                 MARIMBA, INC.
                                                    VERSION      PART NUMBER          PRICE*
<S>                                                 <C>          <C>                  <C>
INTERNATIONAL MAINTENANCE

SUBSCRIPTION SERVICE

Subscription Service                                              SUBSCRIPTION-I      [*% of PRODUCT PRICE]*
                                                                                      ------
BRONZE SERVICE (MINIMUM $5,000)

Bronze Service                                                    BRONZE-I            [*% of PRODUCT PRICE]*
                                                                                      ------
Bronze Extra Point of Contact                                     BRZ-POC-I           [$ ***]*
                                                                                      ------
SILVER SERVICE (MINIMUM $25,000)

Silver Service                                                    SILVER-I            [*% of PRODUCT PRICE]*
                                                                                      ------
Silver Extra Point of Contact                                     SLV-POC-I           [$ ***]*
                                                                                      ------

GOLD SERVICE (MINIMUM $150,000)

Gold Service                                                      GOLD-I              [*% of PRODUCT PRICE]*
                                                                                      ------
Gold Extra Point of Contact                                       GLD-POC-I           [$ ***]*
                                                                                      ------
SUPPORT AND SERVICES

MARIMBA CONSULTING SERVICES

1 Day of Castanet Implementation Services                         CON-IMP-I           [$ ***]* (Plus Expenses)
                                                                                      ------
1 Day of Architectural Design Services                            CON-ARC-I           [$ ***]* (Plus Expenses)
                                                                                      ------
TRAINING
Castanet 3.0 Upgrade Training Kit                                 UPG-TNG-3.2-I       [$ ***]* 
                                                                                      ------
1 Day of Training                                                 TNG-I               [$ ***]* 
                                                                                      ------
On-site Training Per day  for up to 12 students                   TNG-ONSTE-I         [$ ***]* (Plus Expenses)
                                                                                      ------
</TABLE>




* CONFIDENTIAL TREATMENT REQUESTED. CONFIDENTIAL PORTION HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.

<PAGE>   22
<TABLE>
<CAPTION>
PRICE LIST VERSION 3.2 A EFFECTIVE NOVEMBER 23, 1998 WORLDWIDE RESELLERS                 MARIMBA, INC.
                                                             VERSION        PART NUMBER            PRICE*
<S>                                  <C>                     <C>            <C>                    <C>
SDK - SOLD BY SPECIAL AGREEMENT ONLY

CASTANET UPDATENOW SDK

Castanet UpdateNow SDK                                            3.2        UPDSDK-3.2-U          Contact Marimba for Price
UPDATENOW SDK AAL
Castanet UpdateNow SDK AAL                                      UNITS
                                           10,000 to 14,999       3.2        UP-AAL-1-3.2-U        Contact Marimba for Price
                                           15,000 to 24,999       3.2        UP-AAL-2-3.2-U        Contact Marimba for Price
                                           25,000 to 49,999       3.2        UP-AAL-3-3.2-U        Contact Marimba for Price
                                           50,000 to 99,999       3.2        UP-AAL-4-3.2-U        Contact Marimba for Price
                                         100,000 to 249,999       3.2        UP-AAL-5-3.2-U        Contact Marimba for Price
                                         250,000 to 499,999       3.2        UP-AAL-6-3.2-U        Contact Marimba for Price
                                         500,000 to 749,999       3.2        UP-AAL-7-3.2-U        Contact Marimba for Price
                                         750,000 to 999,999       3.2        UP-AAL-8-3.2-U        Contact Marimba for Price
                                     1,000,000 to 4,999,999       3.2        UP-AAL-9-3.2-U        Contact Marimba for Price
                                          5,000,000 or more       3.2        UP-AAL-10-3.2-U       Contact Marimba for Price
</TABLE>


* CONFIDENTIAL TREATMENT REQUESTED. CONFIDENTIAL PORTION HAS BEEN FILED
SEPARATELY WITH THE SECURITIES AND EXCHANGE COMMISSION.

<PAGE>   1
 
                                                                    EXHIBIT 23.1
 
               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS
 
   
     We consent to the references to our firm under the captions "Selected
Consolidated Financial Data" and "Experts" and to the use of our report dated
January 13, 1999, in Amendment No. 4 to the Registration Statement (Form S-1)
and related Prospectus of Marimba, Inc. for the registration of 4,600,000 shares
of its common stock.
    
 
                                      /s/ Ernst & Young LLP
Palo Alto, California
   
April 19, 1999
    

<PAGE>   1
                                                                    Exhibit 99.2




March 24, 1999


Mr. Steven Foote
Hurwitz Group
11 Speen Street
Framingham, MA 01701


Dear Mr. Foote:

     As you may or may not be aware, Marimba, Inc. (the "Company"), our client,
is proposing an initial public offering of its Common Stock ("IPO"). In
connection with the IPO, the Company filed a registration statement on Form S-1
with the Securities and Exchange Commission (the "SEC"), containing certain
information from the report you prepared for the Company assessing the
break-even return on investment for certain of the Company's customers. In
response to SEC comments to the registration statement, the Company is hereby
requesting your consent to reference selected portions of your report in their
registration statement and to file such consent as an amendment to the
registration statement. The relevant portions of the report are attached for 
your review.


<PAGE>   2

Page 2


     To acknowledge your consent to the foregoing, please execute the signature 
block below and fax this letter back to me at (650) 321-2800. The Company is 
filing an amendment to its registration statement on Wednesday, March 31, 1999 
with its responses to the SEC comments and would therefore appreciate your 
feedback on this matter by the end of the week if possible. We appreciate your 
immediate attention to this matter. If you have any questions or would like 
additional information, please call me at (650) 463-5373.


                                        Best Regards,


                                        /s/ AMY S. COHEN
                                        ----------------
                                        Amy S. Cohen


ACKNOWLEDGED AND CONSENTED:
- --------------------------

HURWITZ GROUP


By: /s/ STEVEN D. FOOTE
   ----------------------------------
   Signature

Steven D. Foote
- -------------------------------------
Please print name

Senior Vice President
- -------------------------------------
Title, if applicable

3/26/99
- -------------------------------------
Date
<PAGE>   3
                                   EXHIBIT A
<PAGE>   4
                                   EXHIBIT A

     Many of our customers have gained measurable cost saving benefits through 
their deployment of Castanet. We engaged the Hurwitz Group, an industry analyst 
and research firm, to work with us to assess the amount of time required for 
Castanet to pay for itself, or achieve a break-even return on investment for 
selected customers. The cost savings include both reductions in costs that the 
customer has achieved or expects to achieve, as well as anticipated costs that 
the customer expects to avoid, by deploying Castanet. These cost saving data 
are based on data provided by the customers, and have not been independently 
verified. The following examples demonstrate the expected payback period for 
Castanet in three diverse customer deployments.

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------------------------------
                                               Initial                                            Net Payback
  Customer        Use of Castanet            Investment     Estimated Monthly Cost-Savings          Period
- --------------------------------------------------------------------------------------------------------------
<S>            <C>                            <C>            <C>                      <C>          <C>
Major          Distribute and manage           $200,000      People savings:          $ 21,000     2 months
Manufacturer   sales productivity                            Hardware savings:        $  5,000
               applications to its                           Network bandwidth
               remote/mobile sales force                       utilization savings:   $121,800
               and channel partners                                                   --------
                                                             Total:                   $147,800    
- --------------------------------------------------------------------------------------------------------------
Computer       Distribute all internal       $1,000,000      People savings:          $165,000     4 months
Equipment      business applications to                      Hardware savings:        $122,000
Manufacturer   employees connected to                                                 --------
               worldwide corporate                           Total:                   $287,000
               network.
- --------------------------------------------------------------------------------------------------------------
Major Retail   Distribute, update and        $2,000,000      People savings:          $ 86,000     12 months
Corporation    manage Windows                                Hardware savings:        $ 25,000
               applications over T1 lines                    Support call savings:    $ 60,000
               to global retail network.                                              --------
                                                             Total:                   $171,000
- --------------------------------------------------------------------------------------------------------------
</TABLE>

(1)  Represents the total amount of anticipated time needed for the 
     organization to recoup initial investment in terms of monthly 
     cost savings.








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