ASYST TECHNOLOGIES INC /CA/
S-3/A, 1999-10-29
SPECIAL INDUSTRY MACHINERY, NEC
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<PAGE>


 As filed with the Securities and Exchange Commission on October 29, 1999

                                                Registration No. 333-89489
- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549

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

                             AMENDMENT NO. 1

                                    TO
                                   FORM S-3
                            REGISTRATION STATEMENT
                                     Under
                          The Securities Act of 1933

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

                           ASYST TECHNOLOGIES, INC.
            (Exact name of registrant as specified in its charter)
<TABLE>
<S>                                            <C>
                 California                                      94-2942251
          (State of Incorporation)                  (I.R.S. Employer Identification No.)
</TABLE>

                                48761 Kato Road
                               Fremont, CA 94538
                                (510) 661-5000
         (Address, including zip code, and telephone number, including
            area code of Registrant's principal executive offices)

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

                             Douglas J. McCutcheon
                           Asyst Technologies, Inc.
                                48761 Kato Road
                               Fremont, CA 94538
                                (510) 661-5000
      (Name, address, including zip code, and telephone number, including
                       area code, of agent for service)

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

                                  Copies to:
<TABLE>
<S>                                            <C>
            James C. Kitch, Esq.                           Bruce Alan Mann, Esq.
           Michael L. Weiner, Esq.                          James H. Laws, Esq.
             Cooley Godward LLP                           Morrison & Foerster LLP
            Five Palo Alto Square                            425 Market Street
             3000 El Camino Real                          San Francisco, CA 94105
             Palo Alto, CA 94306                               (415) 268-7000
               (650) 843-5000
</TABLE>

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

       Approximate date of commencement of proposed sale to the public:
     As soon as practicable after the effective date of this Registration
                                  Statement.

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

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

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

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

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

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

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

- -------------------------------------------------------------------------------
- -------------------------------------------------------------------------------
<PAGE>

++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+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 is not soliciting an offer to buy these   +
+securities, in any state where the offer or sale is not permitted.            +
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
                             Subject to Completion

               Preliminary Prospectus dated October 29, 1999

PROSPECTUS

                                2,000,000 Shares

                       [LOGO OF ASYST TECHNOLOGIES, INC.]

                                  Common Stock

                                  -----------

    We are selling 2,000,000 shares of our common stock. Our shares are listed
for trading on the Nasdaq National Market under the symbol "ASYT." On October
28, 1999, the last reported sale price for our common stock was $38 1/8.

    Investing in our common stock involves risks which are described in the
"Risk Factors" section beginning on page 5 of this prospectus.

                                  -----------

<TABLE>
<CAPTION>
                                                              Per Share Total
                                                              --------- -----
     <S>                                                      <C>       <C>
     Public offering price..................................     $       $

     Underwriting discount..................................     $       $

     Proceeds, before expenses, to Asyst Technologies.......     $       $
</TABLE>

    The underwriters may also purchase up to an additional 300,000 shares at
the public offering price, less the underwriting discount, within 30 days from
the date of this prospectus to cover over-allotments.

    Neither the Securities and Exchange Commission nor any state securities
commission has approved or disapproved of these securities or determined if
this prospectus is truthful or complete. Any representation to the contrary is
a criminal offense.

                                  -----------

Merrill Lynch & Co.                                             Lehman Brothers
                          Adams, Harkness & Hill, Inc.
                                                         Needham & Company, Inc.

                                  -----------

                The date of this prospectus is           , 1999.
<PAGE>

EDGAR colorwork description:

Inside front cover of prospectus:

Set of pictures of Asyst products. The Asyst logo covers the left-hand side of
the page. The title is "Increased Productivity and Value Assurance." The text
in the upper middle of the page is as follows:

"We are the leading provider of Standard Mechanical InterFace-based (SMIF)
minienvironment and manufacturing automation systems that enable semiconductor
integrated circuit manufacturers to increase their manufacturing productivity
and protect their investment in silicon wafers during the manufacturing of
integrated circuits.

We offer a broad range of products that enable us to provide semiconductor
manufacturers and original equipment manufacturers (OEMs) with automated
solutions for the transfer of wafers and information between the process
equipment and the rest of the facility."

Inside gatefold:

Semiconductor manufacturing facility layout labeled "Semiconductor
Manufacturing Facility" with pictures of Asyst products and product names
incorporated into the facility layout to show where Asyst's products fit in
the semiconductor manufacturing process. The caption for the upper left hand
corner product picture is "Plus-Portal System." The caption for the upper
middle product picture is "Work-in-Process Materials Management." The caption
for the upper right hand corner product picture is "Isolation Systems." The
caption for the lower right hand corner product picture is "Connectivity
Automation Software." The caption for the lower middle product picture is
"Substrate-Handling Robotics." The caption for the lower left hand corner
product picture is "Automated Transport and Loading Systems." The Asyst logo
covers the left hand side of the gatefold.

Inside back cover of prospectus:

The Asyst logo.

<PAGE>

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                          Page
                                                                          ----
<S>                                                                       <C>
Prospectus Summary.......................................................   1
Risk Factors.............................................................   5
Forward-Looking Statements...............................................  14
Use of Proceeds..........................................................  15
Dividend Policy..........................................................  15
Price Range of Our Common Stock..........................................  16
Capitalization...........................................................  17
Dilution.................................................................  18
Selected Consolidated Financial Data.....................................  19
Management's Discussion and Analysis of Financial Condition and Results
 of Operations...........................................................  20
Business.................................................................  32
Management...............................................................  43
Certain Transactions with Related Parties................................  45
Principal Shareholders...................................................  47
Underwriting.............................................................  48
Legal Matters............................................................  49
Experts..................................................................  50
Where You Can Get More Information.......................................  50
</TABLE>

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

      You should rely only on the information contained in this prospectus. We
have not, and the underwriters have not, authorized any other person to provide
you with different information. If anyone provides you with different or
inconsistent information, you should not rely on it. We are not, and the
underwriters are not, making an offer to sell these securities in any
jurisdiction where the offer or sale is not permitted. You should assume that
the information appearing in this prospectus is accurate as of the date on the
front cover of this prospectus only. Our business, financial condition, results
of operations and prospects may have changed since that date.

      Asyst is our registered trademark. Asyst-SMIF System, SMART-Traveler
System, SMIF-Pod, SMIF-Arms, SMIF-Indexer, SMIF-LPI, SMIF-LPO, SMIF-LPT, SMIF-
E, SMART-Tag, SMART-Comm, SMART-Storage Manager, SMART-Fab, Global Lot Server,
FlouroTrac Auto ID System and SMART-Station, are our trademarks. This
prospectus also contains registered trademarks of other entities.
<PAGE>

                               PROSPECTUS SUMMARY

      This summary does not contain all of the information that may be
important to you. You should read the entire prospectus carefully, including
the financial data and related notes, before making an investment decision. The
terms "we," "us," "our" and "Asyst" mean Asyst Technologies, Inc. Unless
otherwise indicated, all information in this prospectus assumes that the
underwriters do not exercise their over-allotment option.

                            Asyst Technologies, Inc.

      We are the leading provider of Standard Mechanical InterFace-based, or
SMIF, minienvironment and manufacturing automation systems that enable
semiconductor integrated circuit manufacturers, or semiconductor manufacturers,
to increase their manufacturing productivity and protect their investment in
silicon wafers during the manufacturing of integrated circuits. We offer a
broad range of products that enable us to provide semiconductor manfacturers
and original equipment manufacturers of process equipment, or OEMs, with
automated solutions for the transfer of wafers and information between the
process equipment and the rest of the facility. We are the only supplier with
expertise in what we believe are the five key elements required to provide the
semiconductor manufacturing industry with integrated facility automation
solutions. We believe these elements are:

      .isolation systems;
      .work-in-process materials management;
      .substrate-handling robotics;
      .automated transport and loading systems; and
      .connectivity automation software.

      Currently, we believe we offer the most comprehensive product line in the
portal automation market. Portal automation systems use a standard interface to
transfer wafers and information between the process equipment minienvironment
and sealed contamination controlled containers, often referred to as pods.

      We believe that semiconductor manufacturers, the end users of our
products, are able to obtain a higher level of productivity from their
equipment by integrating our products into the semiconductor manufacturing
process. Our products protect valuable wafers throughout the manufacturing
process by providing semiconductor manufacturers with efficient contamination
control, wafer level identification, and tracking and logistics management.

      Semiconductor manufacturers face challenges in achieving and maintaining
high production yields, improving utilization of facilities and managing the
logistics of the increasingly complex semiconductor manufacturing process. In
order to meet these challenges, these manufacturers must continue to invest in
new technology and reduce operating costs. Semiconductor manufacturers are
currently making, and are expected to continue to make, significant investments
in manufacturing capacity through the construction of new 200mm wafer
facilities and the upgrade of existing 150mm and 200mm wafer facilities.
Additional investments are expected to occur as the industry transitions to
300mm wafer facilities.

      We have achieved success in serving the 150mm and 200mm wafer markets by
applying our extensive experience in isolation technology, material tracking
and factory automation. Our strategy is to continue to build upon our success
and further capitalize on the accelerating demand for our technology. The
principal elements of our strategy are:

    .  Capitalize on Demand for New 200mm Facilities and Existing
       Facility Upgrades. Increased demand for advanced integrated
       circuits, or ICs, is fueling the construction of new 200mm

                                       1
<PAGE>

       facilities and upgrades of existing facilities. We intend to
       continue to enhance our leadership position and our technical
       expertise in this market by developing increasingly efficient
       automation solutions in the 200mm market.

    .  Focus on Portal Automation. Our portal automation solutions allow
       OEMs to improve productivity and decrease their total cost and
       time to market. We believe that by leveraging our existing
       relationships with OEMs and semiconductor manufacturers, we will
       be in a position to capitalize on the increasing demand for a
       standard interface between the process tool and the factory
       environment.

    .  Increase Penetration of the Japanese Market. We believe Japanese
       semiconductor manufacturers will continue to build 200mm
       facilities, continue to upgrade existing facilities and begin to
       build 300mm facilities. We intend to augment our ability to
       directly supply our products to Japanese customers by increasing
       our local presence in Japan. In September 1999, we entered into
       an alliance with MECS Corporation, a Japanese engineering and
       robotics company, that will increase our presence in Japan and
       give us the ability to provide local engineering support.

    .  Leverage Success in 200mm to Capitalize on the Transition to
       300mm. We believe our experience and market leadership in portal
       automation and SMIF for the 200mm wafer market provide us with a
       unique platform from which to transition our existing technology
       to 300mm wafer processing equipment.

    .  Build on Strong End User Relationships to Increase Demand for our
       Products from OEMs. The demand for our products has been enhanced
       by the strong relationships we have developed with semiconductor
       manufacturers, our end users. By working closely with these
       semiconductor manufacturers, we are able to better understand
       their specific process requirements and, in turn, educate them on
       the benefits of our products. Ultimately, this process encourages
       our semiconductor manufacturer customers to specify our products
       to OEMs as the preferred solution, thereby increasing demand for
       our products.

      We are a California corporation. Our principal offices are located at
48761 Kato Road, Fremont, California 94538, and our telephone number is (510)
661-5000. Our corporate Website is www.asyst.com. The information in our
Website is not incorporated by reference in this prospectus.

                              Recent Developments

      In June 1999, we acquired all of the shares of Progressive System
Technologies, Inc., a Texas corporation, or PST, which manufactures wafer-
sorting equipment used by semiconductor manufacturers.

      In August 1999, we acquired all of the shares of Palo Alto Technologies,
Inc., a California corporation, or PAT, which is in the process of developing a
continuous flow transport system for use in semiconductor manufacturing
facilities.

      In September 1999, we entered into an alliance with MECS Corporation, a
Japanese engineering and robotics company, which provides that MECS will sell
our products and provide local customer support in the Japanese market. In
October 1999, we purchased approximately 9 2/3 percent of the common stock of
MECS in exchange for approximately $1.5 million. We also have an option to
purchase at least 66 2/3 percent of the common stock of MECS. If we exercise
this option we will use at least $8.4 million of the net proceeds from this
offering.

                                       2
<PAGE>

                                  The Offering

<TABLE>
 <C>                                         <S>
 Common stock offered by Asyst.............. 2,000,000 shares

 Common stock to be outstanding
  after this offering....................... 14,955,886 shares. The number of shares of
                                             our common stock to be outstanding after
                                             this offering is based on the number of
                                             shares outstanding as of September 30,
                                             1999. This excludes 3,823,723 shares of
                                             common stock issuable upon exercise of
                                             outstanding stock options with a weighted
                                             average exercise price of approximately
                                             $14.22 per share. This number also excludes
                                             241,337 additional shares reserved for
                                             future issuance under our stock option
                                             plans and 208,717 additional shares
                                             reserved for sale under our employee stock
                                             purchase plan.

 Use of proceeds............................ For capital expenditures, working capital
                                             and other general corporate purposes. If we
                                             exercise our option to purchase at least 66
                                             2/3 percent of the common stock of MECS, we
                                             will use at least $8.4 million of the net
                                             proceeds.

 Risk factors............................... See "Risk Factors" for a discussion of
                                             factors you should carefully consider
                                             before deciding to invest in our common
                                             stock.

 Nasdaq National Market symbol.............. ASYT
</TABLE>


                                       3
<PAGE>

                      Summary Consolidated Financial Data

      The information under "As Adjusted" in the consolidated balance sheet
data below reflects the receipt of the estimated net proceeds from the sale by
us of the 2,000,000 shares of common stock in this offering at an assumed
public offering price of $38 1/8 per share.

<TABLE>
<CAPTION>
                                                                        Six Months Ended
                                     Year Ended March 31,                September 30,
                          --------------------------------------------  -----------------
                           1995     1996     1997      1998     1999      1998     1999
                          ------- -------- --------  -------- --------  --------  -------
                                     (in thousands, except per share data)
<S>                       <C>     <C>      <C>       <C>      <C>       <C>       <C>
Consolidated Statement
 of Operations Data:
Net sales...............  $41,184 $107,223 $152,303  $182,290 $ 92,948  $ 56,341  $67,782
Gross profit............   19,899   44,221   60,702    79,898   33,053    21,167   29,615
In-process research and
 development of acquired
 businesses and product
 line...................       --       --    1,335        --    7,100     7,100    4,000
Operating income
 (loss).................    5,908   12,561   16,579    25,673  (39,475)  (20,696)  (6,761)
Income (loss) from
 continuing operations..    4,992    8,858    9,990    17,202  (26,931)  (13,239)  (5,634)
Net income (loss).......    2,422    6,455   (4,675)   15,362  (26,931)  (13,239)  (5,634)
Basic Earnings Per
 Share:
Income (loss) per share
 from continuing
 operations.............  $  0.81 $   0.89 $   0.96  $   1.51 $  (2.30) $  (1.11) $ (0.45)
Net income (loss) per
 share..................  $  0.32 $   0.65 $  (0.45) $   1.34 $  (2.30) $  (1.11) $ (0.45)
Shares used in per share
 calculation............    7,540    9,956   10,363    11,429   11,730    11,944   12,532
Diluted Earning Per
 Share:
Income (loss) per share
 from continuing
 operations.............  $  0.75 $   0.83 $   0.94  $   1.41 $  (2.30) $  (1.11) $ (0.45)
Net income (loss) per
 share..................  $  0.30 $   0.61 $  (0.44) $   1.26 $  (2.30) $  (1.11) $ (0.45)
Shares used in per share
 calculation............    8,209   10,667   10,643    12,228   11,730    11,944   12,532
</TABLE>

<TABLE>
<CAPTION>
                                                             September 30, 1999
                                                             -------------------
                                                             Actual  As Adjusted
                                                             ------- -----------
<S>                                                          <C>     <C>
Consolidated Balance Sheet Data:
Cash, cash equivalents and short-term investments........... $30,706  $101,681
Working capital.............................................  80,586   151,561
Total assets................................................ 139,084   210,059
Total shareholders' equity.................................. 112,674   183,649
</TABLE>

                                       4
<PAGE>

                                  RISK FACTORS

      You should carefully consider the risks described below before making a
decision to invest in our common stock. If any of the following risks actually
occur, our business, prospects, financial condition and results of operations
could be materially adversely affected. This could cause the trading price of
our stock to decline, and you may lose all or part of your investment.

      This prospectus contains forward-looking statements that involve risks
and uncertainties, including statements about our future plans, objectives,
intentions and expectations. Many factors, including those described below,
could cause actual results to differ materially from those discussed in any
forward-looking statements.

Our quarterly operating results are subject to variability which could
negatively impact our financial results and our stock price

      Our revenues and operating results can fluctuate substantially from
quarter to quarter depending on factors such as:

    .  the timing of significant customer orders;

    .  the timing of product shipments;

    .  variations in the mix of products sold;

    .  the introduction of new products;

    .  changes in customer buying patterns;

    .  fluctuations in the semiconductor equipment market;

    .  the availability of key components; and

    .  general trends in the economy.

      Our sales cycle is typically six to twelve months or longer from initial
inquiry to placement of an order, making the timing of customer orders uneven
and difficult to predict. This process may also involve competing capital
budget considerations for our customers. A significant portion of the net sales
in any quarter is typically derived from a small number of long-term, multi-
million dollar customer projects involving upgrades of existing facilities or
the construction of new facilities. We typically cannot ship products until the
customer's facility or the process tools housed in its facility are ready.
Generally, our customers may cancel or reschedule shipments with limited or no
penalty. These factors increase the risk of unplanned fluctuations in net
sales. Moreover, a shortfall in planned net sales in a quarter as a result of
these factors could negatively impact our operating results for the quarter.
Given these factors, we expect quarter to quarter performance to fluctuate for
the foreseeable future and, consequently, that quarter to quarter comparisons
may not be meaningful. In one or more future quarters, our operating results
are likely to be below the expectations of public market analysts and
investors. If this occurs, the price of our stock will decline.

Because the semiconductor manufacturing industry is subject to rapid demand
shifts which are difficult to predict, our inability to efficiently manage our
manufacturing capacity in response to these rapid shifts may cause a reduction
in our gross margins, profitability and market share

      Our ability to meet increases in demand depends in part upon our ability
to increase manufacturing capacity for our products in a timely manner. Our
manufacturing capacity is currently being strained by an increase in orders for
our products. If we are unable to expand our production on a timely basis or to
manage expansion effectively, we could lose customers to competitors and our
market share could be reduced. Even if we are able to expand our capacity
sufficiently, we may not be able to manage this expansion efficiently, in which
case, our gross margins and profitability would be negatively impacted.
Additionally, capacity expansion will increase our fixed operating expenses and
make us more vulnerable to a downturn in the semiconductor manufacturing
market.

                                       5
<PAGE>

We depend on large purchases from a few significant customers, and any loss,
cancellation, reduction or delay in purchases by these customers could harm our
business

      A small number of customers have accounted for a significant portion of
our revenues. Our success will depend on our continued ability to develop and
manage relationships with significant customers. In fiscal 1999, Worldwide
Semiconductor Manufacturing Company accounted for approximately 11 percent of
our net sales. For the six months ended September 30, 1999, Taiwan
Semiconductor Manufacturing Company accounted for approximately 11 percent of
our net sales. Although we are attempting to expand our customer base, we
expect that significant customer concentration will continue for the
foreseeable future.

      The markets in which we sell our products are comprised of a relatively
small number of OEMs and semiconductor manufacturers. Our dependence on large
orders from a relatively small number of customers makes our relationship with
each customer critical to our business. It is not certain that we will be able
to retain our largest customers, that we will be able to attract additional
customers or that our OEM customers will be successful in selling our products.
We have in the past experienced delays and reductions in orders from some of
our major customers. In addition, our customers have in the past sought price
concessions from us and may continue to do so in the future. Further, some of
our customers may in the future shift their purchases of products from us to
our competitors. The loss of one or more of our largest customers, any
reduction or delay in sales to these customers, the inability to successfully
develop relationships with additional customers or the need to provide future
price concessions would have a negative impact on our business.

      If we are unable to collect a receivable from a large customer, our
financial results will be negatively impacted. In addition, since each customer
represents a significant percentage of net sales, the timing of the completion
of an order can lead to a fluctuation in our quarterly results. As we complete
projects for a customer, business from that customer will decline substantially
unless it undertakes additional projects incorporating our products.

Because we do not have long-term contracts with our customers, our customers
may cease purchasing our products at any time if we fail to meet their needs

      We do not have long-term contracts with our customers. As a result, our
agreements with our customers do not provide any assurance of future sales.
Accordingly:

    .  our customers can cease purchasing our products at any time without
       penalty;

    .  our customers are free to purchase products from our competitors;

    .  we are exposed to competitive price pressure on each order; and

    .  our customers are not required to make minimum purchases.

      Sales are typically made pursuant to individual purchase orders and often
occur with extremely short lead times. If we are unable to fulfill these orders
in a timely manner, we will lose sales and customers.

Continued rapid growth will strain our operations and require us to incur costs
to upgrade our infrastructure

      During the last three years, we have experienced extremely rapid growth
in our operations, the number of our employees, our product offerings and the
geographic area of our operations. Our growth has been driven by an increase in
our customer base, the size of our installed base of products and acquisitions
of new operations. With the recent increase in demand for semiconductor
manufacturing equipment, we will have to grow even faster to meet customer
demands. Our growth places a significant strain on our management, operations
and financial systems. Our future operating results will be dependent in part
on our ability to

                                       6
<PAGE>

continue to implement and improve our operating and financial controls and
management information systems. In order to succeed, we must train and manage
our employees to cope with growth and change. Failure to manage our growth
effectively could negatively impact our financial condition, results of
operations and profitability.

Because of intense competition for highly skilled personnel, we may not be able
to recruit and retain necessary personnel

      Our future performance depends substantially on the continued service of
our senior management team, in particular Dr. Mihir Parikh, our Chairman of the
Board and Chief Executive Officer, and Anthony Bonora, our Senior Vice
President, Research and Development and Chief Technical Officer. We do not have
long term employment agreements with any of our senior management team, except
Dr. Parikh, and we do not maintain any key-man life insurance policies.

      Our future success will depend in large part upon our ability to recruit
and retain highly skilled technical, manufacturing, managerial, financial and
marketing personnel, all of whom are in great demand. A failure to retain,
acquire or adequately train key personnel could have a material adverse impact
on our performance. Due to the cyclical nature of the demand for our products,
we have had to reduce our workforce and then rebuild our workforce as our
business has gone through downturns followed by upturns. For the fiscal year
ended March 31, 1999, because of the industry downturn, we restructured our
operations and as a result, we terminated the employment of approximately 110
employees in the United States and approximately 30 employees internationally.
In the current upturn, we will need to hire a number of highly skilled
employees, especially in manufacturing, to meet customer demand. The labor
markets in which we operate are highly competitive and as a result, this type
of employment cycle increases our risk of not being able to retain and recruit
key personnel. Moreover, our failure to maintain good employee relations could
negatively impact our operations.

The semiconductor manufacturing industry is highly volatile, and our operating
results are affected to a large extent by events in this industry

      Our business is entirely dependent upon the capital expenditures of
semiconductor manufacturers, which in turn are dependent on the current and
anticipated market demand for integrated circuits as well as products utilizing
ICs. The semiconductor industry is cyclical and has historically experienced
periodic downturns. These downturns, whether the result of general economic
changes or capacity growth temporarily exceeding growth in demand for ICs, are
difficult to predict and have often had a severe adverse effect on the
semiconductor industry's demand for semiconductor processing equipment. During
downturns, some of our customers typically implement substantial reductions in
capital expenditures, and, as a result, drastically reduce their orders with
us. For example, in the fiscal year ended March 31, 1998, we had net sales of
$182.3 million which declined to $92.9 million for the year ended March 31,
1999. This sharp decrease in net sales was due to the reduction in industry
capital spending resulting from the downturn in the Asian economies and in
worldwide demand for semiconductors. In contrast, because of the recent demand
for new 200mm facilities and upgrades of existing facilities, our net sales for
the six months ended September 30, 1999 were $67.8 million, an increase of 20.3
percent over the same period in 1998. We believe that our future performance
will continue to be affected by the cyclical nature of the semiconductor
industry and, as a result, be adversely affected from time to time by such
industry downturns.

We may not be able to efficiently integrate the operations of our acquisitions

      We have recently acquired several companies in order to expand our
product lines including Hine Design Incorporated, or HDI, PST and PAT. We have
also entered into a strategic alliance with MECS which gives us an option to
buy a controlling interest in MECS. We are likely to make additional
acquisitions of, or significant investments in, businesses that offer
complementary products, services, technologies or market

                                       7
<PAGE>

access. If we are to realize the anticipated benefits of these acquisitions,
the operations of these companies must be integrated and combined efficiently.
The process of integrating supply and distribution channels, computer and
accounting systems and other aspects of operations, while managing a larger
entity, will present a significant challenge to our management. In addition, it
is not certain that we will be able to incorporate different technologies into
our integrated solution. There can be no assurance that the integration process
will be successful or that the anticipated benefits of the business
combinations will be fully realized. The dedication of management resources to
such integration may detract attention from the day-to-day business, and we may
need to hire additional management personnel to successfully rationalize our
acquisitions. The difficulties of integration may be increased by the necessity
of combining personnel with disparate business backgrounds and combining
different corporate cultures. There can be no assurance that there will not be
substantial costs associated with such activities or that there will not be
other material adverse effects of these integration efforts. Such effects could
materially reduce our short-term earnings. Consideration for future
acquisitions could be in the form of cash, common stock, rights to purchase
stock or a combination thereof. Dilution to existing stockholders and to
earnings per share may result to the extent that shares of common stock or
other rights to purchase common stock are issued in connection with any future
acquisitions.

We may not be able to realize the benefits of our alliance with MECS

      In September 1999, we entered into an alliance with MECS which provides
that MECS will sell our products and provide local customer support in the
Japanese market. In October 1999, we purchased approximately 9 2/3 percent of
the common stock of MECS. We also have an option to purchase at least 66 2/3
percent of the common stock of MECS. If we exercise this option, we intend to
operate MECS largely as a stand-alone entity. In order to realize the
anticipated benefits of this relationship, our senior management will need to
work effectively with the senior management of MECS despite the geographic
distance between the two companies and the different languages and cultures. If
we are unable to work effectively with the senior management of MECS, then we
may not be able to realize the anticipated benefits of the alliance. If we do
not exercise our option, then we would incur a delay in establishing a greater
presence in Japan, and our position in that market could be negatively
impacted.

      In addition, if we exercise this option, MECS may continue to have
minority shareholders, including its current majority owner and Chief Executive
Officer. Being a majority owner of a corporation with minority shareholders
would place responsibilities on us as the majority owner to consider the needs
and benefits of the minority shareholders, which may be different from ours. If
we exercise this option, the operating results and assets and liabilities of
MECS will be consolidated into our financial statements and our balance sheet,
even though MECS will not be a wholly-owned subsidiary. As of March 31, 1999,
MECS owed approximately $34.0 million in unsecured loans from banks and secured
bonds with interest rates ranging between 1.4 percent to 1.8 percent per annum.
Finally, if MECS performs poorly, this could materially and adversely affect
our financial results.

Shortages of components necessary for our product assembly can delay our
shipments and can lead to increased costs which may negatively impact our
financial results

      With the recent increased demand for semiconductor manufacturing
equipment, our suppliers are straining to provide components on a timely basis
and, in some cases, on an expedited basis at our request. Although to date, we
have experienced only minimal delays in receiving goods from our key suppliers,
disruption or termination of these sources could have a temporary adverse
effect on our operations. Many of the components and subassemblies used in our
products are obtained from a single supplier or a limited group of suppliers.
We believe that, in time, alternative sources could be obtained and qualified
to supply these products in the ordinary course of business, but a prolonged
inability to obtain some components could have an adverse effect on our
operating results and could result in damage to our customer relationships.
Shortages of components may also result in price increases for components and
as a result, could decrease our margins and negatively impact our financial
results.

                                       8
<PAGE>

Our efforts to be responsive to customers may lead to the incurrence of costs
that are not readily recoverable

      We may incur manufacturing overhead and other costs, many of which are
fixed, to meet anticipated customer demand. We often require long lead times
for development of our products; during these periods we must expend
substantial funds and management effort. We may incur significant development
and other expenses as we develop our products without realizing corresponding
revenue in the same period, or at all.

We may not be able to effectively compete in a highly competitive semiconductor
equipment industry

      The markets for our products are highly competitive and subject to rapid
technological change. We currently face direct competition with respect to all
of our products. Some of our competitors may have greater name recognition,
more extensive engineering, manufacturing and marketing capabilities and
substantially greater financial, technical and personnel resources than those
available to us.

      Several companies, including Brooks Automation, Inc. through its
acquisition of Jenoptik Infab, Inc., offer one or more products that compete
with our Asyst-SMIF System and SMART-Traveler System products. We compete
primarily with Entegris, Inc. in the area of SMIF-Pods. We also compete with
several competitors in the robotics area, including, but not limited to, PRI
Automation, Inc. and Kensington Laboratories Inc. With our recent acquisition
of PAT, we have acquired technology in the area of transport automation systems
which we expect to allow us to develop products in this area. By entering this
market, our transport products will face competition from the main product line
of PRI, as well as from Daifuku Co., Ltd. and Murata Manufacturing Co., Ltd.
With our acquisition of PST, we have acquired products in the area of the
storage and management of wafers and reticles. We compete primarily with Irvine
Optical Corporation in this area.

      In addition, the conversion to 300mm wafers is likely to draw new
competitors to the facility automation market. In the 300mm wafer market, we
expect to face intense competition from a number of companies such as PRI and
Brooks, as well as potential competition from semiconductor equipment and
cleanroom construction companies.

      We expect that our competitors will continue to develop new products in
direct competition with ours, improve the design and performance of their
products and introduce new products with enhanced performance characteristics.
In order to remain competitive, we need to continue to improve and expand our
product offerings. In addition, we need to maintain a high level of investment
in research and development and expand our sales and marketing efforts,
particularly in Japan. Ultimately, we may not be able to make the technological
advances and investments necessary to remain competitive.

      New products developed by our competitors or more efficient production of
their products could increase pricing pressure on our products. In addition,
companies in the semiconductor capital equipment industry have been facing
pressure to reduce costs. Either of these factors may require us to make
significant price reductions to avoid losing orders. Further, our current and
prospective customers continuously exert pressure on us to lower prices,
shorten delivery times and improve the capabilities of our products. Failure to
respond adequately to such pressures could result in a loss of customers or
orders.

If we are unable to develop and introduce new products and technologies in a
timely manner, our business could be negatively impacted

      Semiconductor equipment and processes are subject to rapid technological
changes. The development of more complex ICs has driven the need for new
facilities, equipment and processes to produce these devices at an acceptable
cost. We believe that our future success will depend in part upon our ability
to continue to enhance our existing products to meet customer needs and to
develop and introduce new products in a timely manner. There can be no
assurance that our product development efforts will be successful or that we
will be able to respond effectively to technological change.

                                       9
<PAGE>

If we are unable to convince our customers of the advantages of the Plus-Portal
System our growth prospects could be negatively impacted

      We recently introduced our Plus-Portal System for sale to our OEM
customers as a complete, automated interface between the OEM's tool and the
facility. Currently, many OEMs design and manufacture automated equipment
front-ends for their tools utilizing purchased components and in-house
engineering and manufacturing resources. The Plus-Portal System offers OEMs a
standard, outsourced alternative. Although we anticipate that the Plus-Portal
System will not be widely adopted by OEMs until the market begins the
transition to 300mm wafers, we believe that our growth prospects in this area
depend in large part upon our ability to gain acceptance of the Plus-Portal
System by a broader group of OEM customers. Notwithstanding our solution, OEMs
may purchase components to assemble interfaces or invest in the development of
their own complete interfaces. The decision by an OEM to adopt the system for a
large product line involves significant organizational, technological and
financial commitments by this OEM. The market may not accept the Plus-Portal
System.

If we are unable to transition our 200mm technologies to meet the standards
required by the new 300mm wafer size, our business will be adversely affected

      The semiconductor manufacturing industry is anticipated to undergo a
shift in wafer size from 200mm to 300mm over the next few years. As the market
shifts, new products and technologies will be needed to manufacture the larger
wafers. The introduction of new products to service the 300mm market utilizing
new technologies and the emergence of new industry standards could render our
products obsolete. Our success depends on our ability to adapt to rapidly
changing technologies and to improve the performance, features and reliability
of our services in response to changing customer and industry demands.
Furthermore, we may experience difficulties that could delay or prevent the
successful design, development, testing, introduction or marketing of new
products to meet the requirements of the 300mm market.

We may be unable to protect our intellectual property rights and we may become
involved in litigation concerning the intellectual property rights of others

      We rely on a combination of patent, trade secret and copyright protection
to establish and protect our intellectual property. While we intend to protect
our patent rights vigorously, there can be no assurance that our patents will
not be challenged, invalidated or avoided, or that the rights granted
thereunder will provide us with competitive advantages. We also rely on trade
secrets that we seek to protect, in part, through confidentiality agreements
with employees, consultants and other parties. There can be no assurance that
these agreements will not be breached, that we will have adequate remedies for
any breach, or that our trade secrets will not otherwise become known to, or
independently developed by, others.

      Intellectual property rights are uncertain and involve complex legal and
factual questions. We have in the past, and may in the future, unknowingly
infringe on the intellectual property rights of others and may be liable for
that infringement, which could result in significant liability for us. If we do
infringe the intellectual property rights of others, we could be forced to
either seek a license to intellectual property rights of others or alter our
products so that they no longer infringe the intellectual property rights of
others. A license could be very expensive to obtain or may not be available at
all. Similarly, changing our products or processes to avoid infringing the
rights of others may be costly or impractical or could detract from the value
of our product.

      There has been substantial litigation regarding patent and other
intellectual property rights in semiconductor-related industries. Litigation
may be necessary to enforce our patents, to protect our trade secrets or know-
how, to defend Asyst against claimed infringement of the rights of others or to
determine the scope and validity of the patents or intellectual property rights
of others. Any litigation could result in substantial cost to us and divert the
attention of our management, which by itself could have an adverse material
effect on our financial condition and operating results. Further, adverse
determinations in any litigation could result in our

                                       10
<PAGE>

loss of intellectual property rights, subject us to significant liabilities to
third parties, require us to seek licenses from third parties or prevent us
from manufacturing or selling our products. Any of these effects could have a
negative impact on our financial condition and results of operations.

We face significant risks because a majority of our net sales are from sales
outside the United States

      A majority of our net sales for the years ended March 31, 1997, 1998 and
1999 and the six months ended September 30, 1999, were attributable to sales
outside the United States, primarily in Japan, Singapore, Taiwan, and Europe.
We expect that international sales will continue to represent a significant
portion of our total revenues in the future. In particular, net sales to Taiwan
represented 30.8% of our total net sales for the six months ended September 30,
1999. This concentration increases our exposure to any risks in this area.
Sales to customers outside the United States are subject to various risks,
including:

     .  exposure to currency fluctuations;

     .  the imposition of governmental controls;

     .  the need to comply with a wide variety of foreign and U.S. export
  laws;

     .  political and economic instability;

     .  trade restrictions;

     .  changes in tariffs and taxes;

     .  longer payment cycles typically associated with foreign sales;

     .  the greater difficulty of administering business overseas; and

     .  general economic conditions.

      As of March 31, 1997 and 1998 and 1999 and the six months ended September
30, 1999, a majority of our accounts receivable, net, were due from
international customers located primarily in Japan, Singapore, Taiwan and
Europe. Receivable collection and credit evaluation in new geographies and
countries challenge our ability to avert international risks. In addition, the
laws of certain foreign countries may not protect our intellectual property to
the same extent as do the laws of the United States. Although we invoice
substantially all of our international sales in United States dollars, there
can be no assurance that our future results of operations will not be adversely
affected by currency fluctuations. If we exercise our option to purchase at
least 66 2/3 percent of the common stock of MECS, we will increase our exposure
to currency fluctuations.

We could lose revenues and incur significant costs if our systems, products or
third-party systems are not Year 2000 compliant

      Many currently installed computer systems and software products are coded
to accept or recognize only two digit entries in the date code field. These
systems and software products will need to accept four digit entries to
distinguish 21st century dates from 20th century dates. As a result, computer
systems and software used by many companies and governmental agencies may need
to be upgraded to comply with such Year 2000 requirements or risk system
failure or miscalculations causing disruptions of normal business activities.
The failure of our internal systems, or any material third-party systems, to be
Year 2000 compliant could have a material adverse effect on our business. With
respect to our internal business systems, we are working with the third party
vendors of these systems to ensure Year 2000 compliance either exists today or
will be achieved through a vendor supplied upgrade in a timely manner. Our
products have been, and will continue to be,

                                       11
<PAGE>


evaluated for Year 2000 compliance. Many of our products have been found to be
compliant today and others have been found to require modification to be
compliant. Programs are in place and are being further developed to complete
such modifications, for both future shipments and in the customer installed
base. Our total incremental cost of assessing and remediating our systems and
product Year 2000 compliance issues is estimated to be between $0.5 million
and $1.0 million. Approximately $0.2 million has been spent as of March 31,
1999, with between $0.2 million and $0.4 million in capital expenditures
planned for the first nine months of fiscal year 2000. Also being addressed is
the potential impact on us of non-compliance by suppliers, subcontractors,
business partners and customers. Even if our internal systems and products are
Year 2000 compliant, any failure of these third party systems to become Year
2000 compliant could adversely affect our systems and cause disruption in our
normal operations. There can be no assurance that the Year 2000 issue will not
materially and adversely affect us in the future.

Anti-takeover provisions in our articles of incorporation, bylaws and our
shareholder rights plan may prevent or delay an acquisition of Asyst that
might be beneficial to our shareholders

     Our Articles of Incorporation and Bylaws include provisions that may have
the effect of deterring hostile takeovers or delaying changes in control or
management of Asyst. These provisions include certain advance notice
procedures for nominating candidates for election to our Board of Directors, a
provision eliminating shareholder actions by written consent and a provision
under which only our Board of Directors, our Chairman of the Board, our
President or shareholders holding at least 10 percent of the outstanding
common stock may call special meetings of the shareholders. We have entered
into agreements with our officers and directors indemnifying them against
losses they may incur in legal proceedings arising from their service to
Asyst.

     We have adopted a share purchase rights plan, pursuant to which we have
granted to our shareholders rights to purchase shares of junior participating
preferred stock. Upon the earlier of (1) the date of a public announcement
that a person, entity, or group of associated persons has acquired 15 percent
of our common stock or (2) 10 business days following the commencement of, or
announcement of, a tender after or exchange offer, the rights granted to our
shareholders will become exercisable to purchase our common stock at a price
substantially discounted from the then applicable market price of our common
stock. These rights could generally discourage a merger or tender offer
involving the securities of Asyst that is not approved by our Board of
Directors by increasing the cost of effecting any such transaction and,
accordingly, could have an adverse impact on shareholders who might want to
vote in favor of such merger or participate in such tender offer.

     In addition, our Board of Directors has authority to issue up to
4,000,000 shares of preferred stock and to fix the rights, preferences,
privileges and restrictions, including voting rights, of those shares without
any future vote or action by the shareholders. The issuance of preferred stock
while providing desirable flexibility in connection with possible acquisition
and other corporate purposes, could have the effect of making it more
difficult for a third party to acquire a majority of our outstanding voting
stock, thereby delaying, deferring or preventing a change in control of Asyst.
Furthermore, such preferred stock may have other rights, including economic
rights senior to the common stock, and as a result, the issuance thereof could
have a material adverse effect on the market value of the common stock. We
have no present plans to issue shares of preferred stock.

Our stock price may fluctuate significantly which could be detrimental to our
shareholders

     Our stock price has in the past fluctuated and will fluctuate in the
future in response to a variety of factors, including the following:

     .quarterly fluctuations in results of operations;

     .announcements of new products by Asyst or its competitors;

     .changes in either our earnings estimates or investment recommendations
by stock market analysts;

                                      12
<PAGE>

      .announcements of technological innovations;

      .conditions or trends in the semiconductor manufacturing industry;

    .announcements by Asyst or our competitors of acquisitions, strategic
      partnerships or joint ventures;

      .additions or departures of senior management; and

      .other events or factors many of which are beyond our control.

      In addition, in recent years, the stock market in general and shares of
technology companies in particular have experienced extreme price fluctuations,
and such extreme price fluctuations may continue. These broad market and
industry fluctuations may adversely affect the market price of our common
stock.

We may not be able to secure additional financing to meet our future capital
needs

      We currently anticipate that our available cash resources combined with
the net proceeds from this offering will be sufficient to meet our anticipated
needs for working capital and capital expenditures for at least twelve months
following the date of this prospectus. If we are unable to generate sufficient
cash flows from operations to meet our anticipated needs for working capital
and capital expenditures, we will need to raise additional funds after twelve
months to develop new or enhanced products, respond to competitive pressures or
make acquisitions. We may be unable to obtain any required additional financing
on terms favorable to us, if at all. If adequate funds are not available on
acceptable terms, we may be unable to fund our expansion, successfully develop
or enhance products, respond to competitive pressures or take advantage of
acquisition opportunities, any of which could have a material adverse effect on
our business. If we raise additional funds through the issuance of equity
securities, our shareholders may experience dilution of their ownership
interest, and the newly-issued securities may have rights superior to those of
the common stock. If we raise additional funds by issuing debt, we may be
subject to limitations on our operations.

Investors will suffer immediate and substantial dilution from this offering

      The public offering price per share will significantly exceed the net
tangible book value per share. Accordingly, investors purchasing shares in this
offering will suffer immediate and substantial dilution investment of $27.09
per share.

                                       13
<PAGE>

                           FORWARD-LOOKING STATEMENTS

      This prospectus includes forward-looking statements within the meaning of
Section 27A of the Securities Act of 1933, and Section 21E of the Securities
Exchange Act of 1934. We intend such forward-looking statements to be covered
by the safe harbor provisions for forward-looking statements contained in the
Private Securities Litigation Reform Act of 1995, and we are including this
statement for purposes of complying with these safe harbor provisions. We have
based these forward-looking statements on our current expectations and
projections about future events. These forward-looking statements are not
guarantees of future performance and are subject to risks, uncertainties and
assumptions, including those set forth under "Risk Factors."

      Words such as "expect," "anticipate," "intend," "plan," "believe,"
"estimate" and variations of such words and similar expressions are intended to
identify such forward-looking statements. We undertake no obligation to
publicly update or revise any forward-looking statements, whether as a result
of new information, future events or otherwise. In light of these risks,
uncertainties and assumptions, the forward-looking events discussed in this
prospectus might not occur.

                                       14
<PAGE>

                                USE OF PROCEEDS

      We estimated that the net proceeds from the sale of the 2,000,000 shares
of common stock that we are offering at an assumed public offering price of $38
1/8 will be approximately $71.0 million after deducting the underwriting
discounts and commissions and estimated offering expenses payable by us. If the
underwriters exercise their over-allotment option in full, we estimate the net
proceeds from this offering will be approximately $81.7 million.

      We expect to use the net proceeds from this offering for capital
expenditures, working capital and general corporate purposes. If we exercise
our option to purchase at least 66 2/3 percent of the common stock of MECS, we
will use at least $8.4 million of the net proceeds. We may use a portion of the
net proceeds to acquire other complementary products, technologies or
businesses when the opportunity arises; however, we currently have no
commitments or agreements other than with MECS and are not involved in any
other negotiations with respect to any such transactions. As of the date of
this prospectus, we cannot specify with certainty the particular uses for the
net proceeds we will receive in this offering. Accordingly, our management will
have broad discretion in applying our net proceeds of this offering. Pending
such uses, the net proceeds of this offering will be primarily invested in
investment grade, interest-bearing instruments.

                                DIVIDEND POLICY

      We have never declared or paid any cash dividends on our capital stock.
We currently intend to retain earnings, if any, to support the development of
our business and do not anticipate paying cash dividends for the foreseeable
future. Payment of future dividends, if any, will be at the discretion of our
Board of Directors after taking into account various factors, including our
financial condition, operating results and current and anticipated cash needs.

                                       15
<PAGE>

                        PRICE RANGE OF OUR COMMON STOCK

      Our common stock has been traded on the Nasdaq National Market under the
symbol ASYT since September 22, 1994. The following table sets forth for the
period indicated the high and low sale prices for our common stock, as reported
by the Nasdaq National Market, adjusted for a two for one stock dividend in
August 1997.

<TABLE>
<CAPTION>
                                                               High       Low
                                                            ---------- ---------
<S>                                                         <C>        <C>
Year ended March 31, 1998
First Quarter.............................................. $22        $ 9 1/2
Second Quarter............................................. $47 1/4    $21 5/8
Third Quarter.............................................. $44 1/4    $20
Fourth Quarter............................................. $32        $18 5/8
Year ended March 31, 1999
First Quarter.............................................. $25 3/4    $12 1/2
Second Quarter............................................. $15        $ 7
Third Quarter.............................................. $21 11/16  $ 6 3/16
Fourth Quarter............................................. $28 3/16   $13 3/4
Year ending March 31, 2000
First Quarter.............................................. $30 1/2    $13 3/8
Second Quarter............................................. $35        $23 13/16
Third Quarter (through October 28, 1999)................... $39 1/4    $28 7/8
</TABLE>

      On October 28, 1999, the last reported sale price of our common stock on
the Nasdaq National Market was $38 1/8. As of September 30, 1999 there were
12,955,886 shares of our common stock outstanding held by approximately 210
holders of record.


                                       16
<PAGE>

                                 CAPITALIZATION

      The following table sets forth on an unaudited basis our capitalization
as of September 30, 1999 and as adjusted to reflect the sale of the 2,000,000
shares of common stock we are offering at an assumed public offering price of
$38 1/8 per share and the receipt of the estimated net proceeds, after
deducting the underwriting discounts and our estimated offering expenses. You
should read this table in conjunction with the consolidated financial
statements and notes incorporated by reference and "Selected Consolidated
Financial Data" included elsewhere in this prospectus.

<TABLE>
<CAPTION>
                                                               September 30,
                                                                   1999
                                                             ------------------
                                                                          As
                                                              Actual   adjusted
                                                             --------  --------
                                                              (in thousands)
<S>                                                          <C>       <C>
Current portion of long-term debt..........................  $    --   $    --
Long-term debt.............................................       --        --
Shareholders' equity:
  Preferred stock, no par value, 4,000,000 shares
   authorized; no shares issued and outstanding............       --        --
  Common stock, no par value, 50,000,000 shares authorized;
   12,955,886 shares issued and outstanding................   135,716   206,691
  Accumulated deficit......................................   (23,042)  (23,042)
                                                             --------  --------
   Total shareholders' equity..............................   112,674   183,649
                                                             --------  --------
     Total capitalization..................................  $112,674  $183,649
                                                             ========  ========
</TABLE>
- --------
The table above excludes:

    .  3,823,723 shares of common stock issuable upon exercise of options
       outstanding at September 30, 1999 at a weighted average exercise
       price of $14.22 per share; and

    .  450,054 shares of common stock reserved for future grant or issuance
       under our option plans and employee stock purchase plan.


                                       17
<PAGE>

                                    DILUTION

      As of September 30, 1999, our net tangible book value was $94.1 million
in the aggregate, or $7.27 per share. Net tangible book value per share
represents our total tangible assets less total liabilities, divided by the
number of outstanding shares of common stock. Dilution per share represents the
difference between the amount per share paid by investors in this offering of
common stock and the net tangible book value per share after the offering.
After giving effect to the sale of 2,000,000 shares of common stock and after
our application of the estimated net proceeds from the offering, our net
tangible book value as of September 30, 1999 would have been $165.1 million in
the aggregate, or $11.04 per share. This represents an immediate increase in
net tangible book value of $3.77 per share to existing shareholders and an
immediate dilution in net tangible book value of $27.09 per share to new
investors purchasing shares of common stock in the offering. If the public
offering price is higher or lower, the dilution to the new investors will
increase or decrease accordingly. The following table illustrates this per
share dilution:

<TABLE>
     <S>                                                         <C>   <C>
     Public offering price per share............................       $38.13
       Net tangible book value per share before the offering.... $7.27
       Increase attributable to new investors...................  3.77
                                                                 -----
     Pro forma net tangible book value per share after the
      offering..................................................        11.04
                                                                       -------
     Dilution per share to new investors........................       $27.09
                                                                       =======
</TABLE>

                                       18
<PAGE>

                      SELECTED CONSOLIDATED FINANCIAL DATA

      The selected consolidated financial data set forth below should be read
together with "Management's Discussion and Analysis of Financial Condition and
Results of Operations" and our financial statements and the related notes
incorporated by reference. The selected consolidated statement of operations
data set forth below for the years ended March 31, 1995 and 1996 and the
selected consolidated balance sheet data as of March 31, 1995, 1996 and 1997
are derived from unaudited financial statements that are not included in this
prospectus or incorporated by reference. The selected consolidated financial
data set forth below for the years ended March 31, 1997, 1998, and 1999 have
been derived from our audited financial statements incorporated by reference.
The selected consolidated financial data as of September 30, 1999 and for the
six months ended September 30, 1998 and 1999 are derived from unaudited
financial statements incorporated by reference. These unaudited consolidated
financial statements have been prepared on the same basis as the audited
financial statements and, in our opinion, contain all adjustments consisting of
normal recurring adjustments necessary for a fair presentation of our financial
position and results of operations. Our historical results are not necessarily
indicative of results to be expected for any future period.
<TABLE>
<CAPTION>
                                                                           Six Months Ended
                                     Year Ended March 31,                   September 30,
                          --------------------------------------------  -----------------------
                           1995     1996     1997      1998     1999      1998        1999
                          ------- -------- --------  -------- --------  --------  -------------
                                        (in thousands, except per share data)
<S>                       <C>     <C>      <C>       <C>      <C>       <C>       <C>
Consolidated Statement
 of Operations Data:
Net sales...............  $41,184 $107,223 $152,303  $182,290 $ 92,948  $ 56,341    $ 67,782
Gross profit............   19,899   44,221   60,702    79,898   33,053    21,167      29,615
In-process research and
 development of acquired
 businesses and product
 line...................       --       --    1,335        --    7,100     7,100       4,000
Operating income
 (loss).................    5,908   12,561   16,579    25,673  (39,475)  (20,696)     (6,761)
Income (loss) from
 continuing operations..    4,992    8,858    9,990    17,202  (26,931)  (13,239)     (5,634)
Net income (loss).......    2,422    6,455   (4,675)   15,362  (26,931)  (13,239)     (5,634)
Basic earnings per
 share:
 Income (loss) per share
  from continuing
  operations............  $  0.81 $   0.89 $   0.96  $   1.51 $  (2.30) $  (1.11)   $  (0.45)
 Net income (loss) per
  share.................  $  0.32 $   0.65 $  (0.45) $   1.34 $  (2.30) $  (1.11)   $  (0.45)
 Shares used in per
  share calculation.....    7,540    9,956   10,363    11,429   11,730    11,944      12,532
Diluted earnings per
 share:
 Income (loss) per share
  from continuing
  operations............  $  0.75 $   0.83 $   0.94  $   1.41 $  (2.30) $  (1.11)   $  (0.45)
 Net income (loss) per
  share.................  $  0.30 $   0.61 $  (0.44) $   1.26 $  (2.30) $  (1.11)   $  (0.45)
 Shares used in per
  share calculation.....    8,209   10,667   10,643    12,228   11,730    11,944      12,532
<CAPTION>
                                           March 31,                              September 30,
                          --------------------------------------------            -------------
                           1995     1996     1997      1998     1999                  1999
                          ------- -------- --------  -------- --------            -------------
<S>                       <C>     <C>      <C>       <C>      <C>       <C>       <C>
Consolidated Balance
 Sheet Data:
Cash, cash equivalents
 and short-term
 investments............  $39,183 $ 14,249 $ 14,739  $ 85,493 $ 35,762              $ 30,706
Working capital.........   53,051   56,077   56,835   122,535   72,484                80,586
Total assets............   77,316  101,021   98,828   166,502  124,288               139,084
Total shareholders'
 equity.................   58,868   68,146   68,376   129,250   96,634               112,674
</TABLE>

                                       19
<PAGE>

                    MANAGEMENT'S DISCUSSION AND ANALYSIS OF
                 FINANCIAL CONDITION AND RESULTS OF OPERATIONS

      The following discussion of our financial condition and results of
operations should be read in conjunction with our consolidated financial
statements and the related notes included elsewhere in this prospectus. This
discussion contains forward-looking statements which involve risks and
uncertainties. Our actual results could differ materially from those
anticipated in the forward-looking statements as a result of certain factors,
including but not limited to those discussed in "Risk Factors" and elsewhere in
this prospectus.

Overview

      Our sales are tied to capital expenditures at wafer fabrication
facilities. The majority of our revenues in any single quarter are typically
derived from relatively few large customers, and our revenues will therefore
fluctuate based on a number of factors, including:

    .  the timing of significant customer orders;

    .  the timing of product shipments;

    .  variations in the mix of products sold;

    .  the introduction of new products;

    .  changes in customer buying patterns;

    .  fluctuations in the semiconductor equipment market;

    .  the availability of key components; and

    .  general trends in the economy.

      In addition, due to production cycles and customer requirements, we often
ship significant quantities of products in the last month of the quarter. This
factor increases the risk of unplanned fluctuations in net sales since we have
limited opportunity to take corrective actions should a customer reschedule a
shipment or otherwise delay an order during the last month of the quarter.

      Fiscal year 1999 was significantly and adversely impacted by the
worldwide drop in demand for semiconductor devices. The drop in demand resulted
from a dramatic slowdown in the Asian economies and over-capacity of memory
chip manufacturing. In response, many of our customers slashed capital
expenditure budgets by 40 percent or more. Net sales decreased 49.0 percent
from $182.3 million for the year ended March 31, 1998 to $92.9 million for the
year ended March 31, 1999. In addition, in fiscal year 1999, we acquired the
FluoroTrac Auto-ID product line from Flouroware, Inc. and HDI, enhancing our
wafer tracking and robotics capabilities. The significant decline in net sales
and the new acquisitions required us to undertake substantial restructuring
activities to reduce costs and eliminate low margin products. Nevertheless, we
experienced a net loss in fiscal year 1999 of $26.9 million compared to a
record net income of $15.4 million in fiscal year 1998.

      In contrast, net sales for each of the quarters ended June 30, 1999 and
September 30, 1999 have increased sequentially by over 45 percent over the
prior quarter. Our book to bill ratios have improved and are higher than those
reported for the industry. Whereas for most of the year ended March 31, 1999 we
were dependent upon orders received and shipped during the same quarter, our
current backlog of orders exceeds our manufacturing capacity for the quarter
ended December 31, 1999. Many of our customers have announced significantly
increased capital expenditure spending plans.

      In June 1999, we acquired all of the shares of PST, which manufactures
wafer-sorting equipment used by semiconductor manufacturers. The acquisition
was accounted for as a pooling of interests. Accordingly, our consolidated
financial statements for all periods presented have been restated to include
the financial statements of PST.

                                       20
<PAGE>

      In August 1999, we acquired all of the shares of PAT, which is in the
process of developing a continuous flow transport system for use in
semiconductor manufacturing facilities. The transaction was accounted for as a
purchase.

      In September 1999, we entered into an alliance with MECS to sell our
products and provide local customer support in the Japanese market. In October
1999, we purchased approximately 9 2/3 percent of the common stock of MECS in
exchange for approximately $1.5 million. We also have an option to purchase at
least 66 2/3 percent of the common stock of MECS, once MECS meets various
operating performance levels and disposes of its non-core subsidiaries. If we
were to acquire 66 2/3 percent of the common stock of MECS, then we will spend
approximately $8.4 million. If we were to acquire 100 percent of the common
stock of MECS, then we will spend approximately $13.4 million. As of March 31,
1999, MECS had long-term debt and bonds, including the current portions,
totaling approximately $34.0 million with interest rates ranging between 1.4
percent to 1.8 percent per annum.

Three and Six Months Ended September 30, 1998 and 1999

      The following table sets forth the percentage of net sales represented by
consolidated statements of operations data for the periods indicated:

<TABLE>
<CAPTION>
                                   Three Months Ended     Six Months Ended
                                     September 30,          September 30,
                                   ---------------------  -------------------
                                     1998        1999       1998       1999
                                   ---------   ---------  --------   --------
<S>                                <C>         <C>        <C>        <C>
Net sales.........................     100.0 %    100.0 %    100.0 %    100.0 %
Cost of sales.....................      81.8       54.9       62.4       56.3
                                   ---------   --------   --------   --------
  Gross profit....................      18.2       45.1       37.6       43.7
                                   ---------   --------   --------   --------
Operating expenses:
  Research and development........      23.6       11.0       16.0       12.8
  Selling, general and
   administrative.................      65.1       30.3       40.5       34.9
  In-process research and
   development of acquired
   businesses and product line....      31.2        9.8       12.6        5.9
  Restructuring charge............      15.4         --        5.2         --
                                   ---------   --------   --------   --------
    Total operating expenses......     135.3       51.1       74.3       53.6
                                   ---------   --------   --------   --------
    Operating income (loss).......    (117.1)      (6.0)     (36.7)      (9.9)
Other income, net.................       6.0        0.7        2.6        0.4
                                   ---------   --------   --------   --------
Income (loss) before provision
 (benefit) for income taxes.......    (111.1)      (5.3)     (34.1)      (9.5)
Provision (benefit) for income
 taxes............................     (36.3)       1.5      (10.6)      (1.2)
                                   ---------   --------   --------   --------
Net income (loss).................     (74.8)%     (6.8)%    (23.5)%     (8.3)%
                                   =========   ========   ========   ========
</TABLE>

Results of Operations

      Net Sales. Net sales increased 115.3 percent from $18.9 million for the
three months ended September 30, 1998, to $40.7 million for the three months
ended September 30, 1999. Net sales increased 20.3 percent from $56.3 million
for the six months ended September 30, 1998 to $67.8 million for the six months
ended September 30, 1999. The increase in net sales for the three and six
months ended September 30, 1999 is due to increased demand for our products as
capital expenditures of semiconductor manufacturers have increased to add
capacity.

      International sales have increased in terms of dollars of net sales but
decreased as a percent of net sales for the six months ended September 30, 1999
compared to the six month ended September 30, 1998. This is partly due to the
influence of the acquisition of HDI in August 1998 which sells primarily to
OEMs in the

                                       21
<PAGE>

United States. International sales by region for the six months ended September
30, 1998 and 1999, are summarized as follows:

<TABLE>
<CAPTION>
                        Six Months Ended September  Six Months Ended September
                                 30, 1998                    30, 1999
                        --------------------------- ---------------------------
     Geographic           Net Sales   Percentage of   Net Sales   Percentage of
       Region           (in millions)   Net Sales   (in millions)   Net Sales
     ----------         ------------- ------------- ------------- -------------
     <S>                <C>           <C>           <C>           <C>
     Taiwan............     $23.1         41.0%         $20.9         30.8%
     Japan.............       6.6         11.7           10.8         15.9
     Singapore.........       1.5          2.7            4.3          6.4
     Europe............       3.0          5.3            2.2          3.2
                            -----         ----          -----         ----
                            $34.2         60.7%         $38.2         56.3%
                            =====         ====          =====         ====
</TABLE>

Our results of operations have not been adversely affected by currency exchange
rates because we have invoiced substantially all of our international sales in
United States dollars. However, there can be no assurance that our results of
operations will not be adversely affected by such fluctuations in the future.

      We have experienced cancellations and delays of orders in the past,
particularly during fiscal year 1999, while the industry was undergoing a
significant downturn. During the six months ended September 30, 1999,
cancellation and delays were not significant. Given the cyclical nature of the
semiconductor industry, we can give no assurance that there will not be future
cancellations or delays in orders.

      Gross Margin. Gross margin increased from 18.2 percent of net sales for
the three months ended September 30, 1998, to 45.1 percent of net sales for the
three months ended September 30, 1999. Gross margin increased from 37.6 percent
of net sales for the six months ended September 30, 1998 to 43.7 percent of net
sales for the six months ended September 30, 1999. The primary contributor to
the increase in the gross margin for the three and six months ended September
30, 1999 was the increase in net sales without increasing indirect
manufacturing costs at the rate net sales increased. Gross margin also improved
as a result of the impact of cost reduction efforts we undertook during the
past year, offset somewhat by lower gross margins in our robotics products
added to our portfolio of products by the acquisition of HDI in August 1998. It
remains our goal to improve gross margins as a percentage of net sales in the
future through reduction of direct manufacturing costs and increase the
leverage of the indirect manufacturing through higher net sales.

      Research and Development. Research and development expenses were $4.5
million for the three months ended September 30, 1998 and 1999. Research and
development expenses decreased 3.4 percent from $9.0 million for the six months
ended September 30, 1998, to $8.7 million for the six months ended
September 30, 1999. The dollar decrease for the six months ended September 30,
1999 from the six months ended September 30, 1998 is because of our cost
reduction efforts in response to a sharp decline in sales. Research and
development expenses decreased as a percentage of net sales from 23.6 percent
for the three months ended September 30, 1998 to 10.9 percent for the three
months ended September 30, 1999 and decreased as a percentage of net sales from
16.0 percent for the six months ended September 30, 1998 to 12.8 percent for
the six months ended September 30, 1999. The decrease in research and
development expenses as a percentage of net sales for the comparative three and
six month periods is due primarily to the increase in our net sales. We expect
that our research and development expenses may increase in future periods, but
will fluctuate as a percentage of net sales.

      Selling, General and Administrative. Selling, general and administrative
expenses were $12.3 million for the three months ended September 30, 1998 and
1999. Selling, general, and administrative expenses increased 3.7 percent from
$22.8 million for the six months ended September 30, 1998, to $23.7 million for
the six months ended September 30, 1999. Selling, general and administrative
expenses have increased because of

                                       22
<PAGE>

the impact of the acquisition of HDI in August 1998, staffing additions in
response to the increase in our sales and higher commission expenses related to
our increase in net sales. The decrease in selling, general and administrative
expenses as a percentage of net sales is due primarily to the increase in net
sales in both the three and six month comparative periods. We expect that
selling, general and administrative expenses may increase in future periods,
although the spending may vary as a percentage of net sales.

      In-process Research and Development of Acquired Businesses and Product
Line. In April 1998, we completed the acquisition of the FluoroTrac product
line from Fluoroware. The transaction was completed in the three months ended
June 30, 1998. In connection with the acquisition of FluoroTrac, we recorded a
write-off of $1.2 million of in-process research and development for the three
months ended June 30, 1998. The remaining excess cost of purchase price over
net assets acquired, approximately $0.3 million, is being amortized over
periods of three to five years.

      In July 1998, we acquired HDI using the purchase method of accounting. In
connection with the acquisition of HDI, we recorded a write-off of $5.9 million
of purchased in-process research and development costs for the three months
ended September 30, 1998. In addition, approximately $18.4 million of the
purchase price in excess of the value of net liabilities we assumed were
allocated to various intangible assets, which are being amortized over periods
of four to fourteen years, with a dollar average life of ten years. For the
three months ended September 30, 1999, a charge for amortization relating to
these intangibles, approximately $0.6 million, was included in our selling,
general and administrative expenses.

      In August 1999, we acquired PAT using the purchase method of accounting.
In connection with the acquisition of PAT, we recorded a write off of $4.0
million of purchased in-process research and development costs for the three
months ended September 30, 1999. In addition, approximately $0.6 million of the
purchase price in excess of the value of the net liabilities we assumed were
allocated to goodwill, which is being amortized over five years. The purchased
in-process research and development and goodwill do not result in a tax
benefit.

      Restructuring Charge. For the three months ended September 30, 1998, in
response to the reductions in capital spending by semiconductor manufacturers,
we undertook a formal plan to lower our cost structure and reorganize to more
effectively manufacture, market and sell our portfolio of products and value
added services. The restructuring effort consisted of the closure of two of our
facilities in the United States during the three months ended December 31, 1998
and the closure and downsizing of certain facilities in Europe for the three
months ended March 31, 1999. In addition, management of the software product
line was streamlined eliminating one level of management and administrative
activities, which were deemed redundant.

      Other Income, Net. Other income, net, includes interest income, interest
expense, foreign exchange gain and loss, which has not been material, and
royalty income. Other income, net, decreased from $1.1 million for the three
months ended September 30, 1998 to $0.3 million for the three months ended
September 30, 1999. Other income, net, decreased from $1.5 million for the six
months ended September 30, 1998 to $0.3 million for the six months ended
September 30, 1999. Our average cash, cash equivalents and short-term
investments balance for the six months ended September 30, 1998 was
approximately $67.0 million compared to $33.2 million for the six months ended
September 30, 1999. Our average current and long-term debt balance was $5.8
million for the six months ended September 30, 1998, while we had no debt
outstanding for the six months ended September 30, 1999.

      Provision (Benefit) for Income Taxes. We reported a benefit for income
taxes of $6.9 million and a provision for income taxes of $0.6 million for the
three months ended September 30, 1998 and 1999, respectively. For the six
months ended September 30, 1998 and 1999, we reported a benefit for income
taxes of $6.0 million and $0.8 million, respectively. The effective income tax
rates for the three and six month periods in 1998 were impacted by the
acquisition of PST. The annual effective tax rates and benefits recorded for
the three and six months ended September 30, 1998 do not recognize the full
deferred benefits of the utilization of

                                       23
<PAGE>

net operating losses of PST because there was uncertainty as to PST's ability
to generate future taxable income. Absent the restatement of earnings to
reflect the pooling of interests related to PST for the three and six months
ended September 30, 1998, our effective tax rate would have been 34.0 percent.
The provision for income taxes for the three months ended September 30, 1999
reflects the non-deductible charge of $4.0 million related to the acquisition
of PAT in August 1999. The annual estimated effective tax rate and benefit
recorded for the six months ended September 30, 1999, reflect the nondeductible
charge of $4.0 million related to the acquisition of PAT in August 1999.
Additionally, the benefit for income taxes was impacted by foreign income and
withholding taxes in excess of the statutory rates, the lack of Foreign Sales
Corporation benefit due to net operating losses for the six months ended
September 30, 1999 and limitations on state net operating loss carryforwards.

Fiscal Years Ended March 31, 1997, 1998 and 1999

      The following table sets forth the percentage of net sales represented by
certain consolidated statements of operations data for the periods indicated:

<TABLE>
<CAPTION>
                                              Fiscal Year Ended March 31
                                              ------------------------------
                                                1997       1998       1999
                                              --------   --------   --------
<S>                                           <C>        <C>        <C>
Net sales....................................    100.0 %    100.0 %    100.0 %
Cost of sales................................     60.1       56.2       64.4
                                              --------   --------   --------
  Gross profit...............................     39.9       43.8       35.6
                                              --------   --------   --------
Operating expenses:
  Research and development...................      7.5        9.1       19.4
  Selling, general and administrative........     20.6       20.6       45.0
  In-process research and development of
   acquired businesses and product line......      0.9         --        7.7
  Restructuring charge.......................       --         --        6.0
                                              --------   --------   --------
  Total operating expenses...................     29.0       29.7       78.1
                                              --------   --------   --------
  Operating income (loss)....................     10.9       14.1      (42.5)
Other income (expense), net..................      0.4        1.0        1.9
                                              --------   --------   --------
Income (loss) from continuing operations
 before provision (benefit) for income
 taxes.......................................     11.3       15.1      (40.6)
Provision (benefit) for income taxes.........      4.7        5.6      (11.6)
                                              --------   --------   --------
Income (loss) from continuing operations.....      6.6        9.5      (29.0)
                                              --------   --------   --------
Loss from operations of Asyst Automation,
 Inc., net of applicable income taxes........     (4.0)        --         --
Loss on closure of Asyst Automation, Inc.,
 net of applicable income taxes..............     (5.6)      (1.0)        --
                                              --------   --------   --------
Net income (loss)............................     (3.0)%      8.5 %    (29.0)%
                                              ========   ========   ========
</TABLE>

      Net Sales. Net sales in the year ended March 31, 1999 decreased by 49.0
percent to $92.9 million from $182.3 million for the year ended March 31, 1998.
Net sales for the year ended March 31, 1997 were approximately $152.3 million.
The decrease in sales was consistent across all of our products. Both the OEM
channel and direct fabrication end user channel were impacted by the worldwide
reduction in capital spending of the major semiconductor manufacturers. Net
sales would have been over $6.3 million less had we not acquired the FluoroTrac
product line and HDI for the fiscal year ended March 31, 1999.

      For the three months ended March 31, 1999, our ending backlog was greater
than our net sales for that quarter. We can give no assurance that orders may
not be cancelled in the future.

                                       24
<PAGE>

      International sales, including the local revenues recorded at the foreign
locations, were as follows, dollars in millions:

<TABLE>
<CAPTION>
                                         Fiscal Year Ended March 31
                             ---------------------------------------------------
                                   1997             1998              1999
                             ---------------- ----------------- ----------------
                               $   % of Sales   $    % of Sales   $   % of Sales
                             ----- ---------- ------ ---------- ----- ----------
<S>                          <C>   <C>        <C>    <C>        <C>   <C>
Taiwan...................... $48.8    32.1%   $ 79.3    43.5%   $31.1    33.5%
Singapore...................   9.4     6.2      13.6     7.5      3.4     3.7
Thailand....................   6.6     4.3        --      --       --      --
Korea.......................   6.1     4.0        --      --      0.5     0.5
Japan.......................  10.3     6.7      15.9     8.7      8.1     8.7
Other.......................    .4     0.3       0.5     0.3      0.3     0.3
                             -----    ----    ------    ----    -----    ----
  Total Asia................  81.6    53.6     109.3    60.0     43.4    46.7
Europe......................   5.1     3.3       6.5     3.5      4.1     4.4
                             -----    ----    ------    ----    -----    ----
  Total International....... $86.7    56.9%   $115.8    63.5%   $47.5    51.1%
                             =====    ====    ======    ====    =====    ====
</TABLE>

      Direct sales to international customers remain a substantial portion of
our sales. During fiscal year 1999, international sales as a percent of net
sales decreased to 51.0 percent from 63.0 percent of net sales in fiscal year
1998. The drop in international net sales as a percent of net sales resulted in
part due to the acquisition of HDI on July 31, 1998, as HDI had a lower
percentage of sales than Asyst. International net sales of robots, the primary
product of HDI represented less than 10 percent of the $6.3 million of our
robot sales of Asyst during fiscal year 1999. In addition, in fiscal year 1999,
we experienced a sharp decline in our Asia foundry sales in response to the
slowdown in worldwide demand for semiconductors. For example, our largest
customer in fiscal year 1998 reduced its purchases of our products from $53.0
million to just $6.3 million in fiscal year 1999, representing our second
largest customer. In fiscal year 1999, our largest customer purchased $10.3
million of products. The largest customers as measured in net sales, in the
fiscal years 1997, 1998 and 1999, were Asia based foundries.

      The net sales by product or service categories comprising our net sales,
were as follows:

<TABLE>
<CAPTION>
                                                        Fiscal Year Ended March
                                                                  31,
                                                       -------------------------
                                                         1997     1998    1999
                                                       -------- -------- -------
                                                            (in thousands)
<S>                                                    <C>      <C>      <C>
SMIF Systems.......................................... $118,647 $145,702 $66,609
NON-SMIF Systems......................................   14,783   16,827   8,794
SMART Traveler Systems................................   11,145   14,533   6,227
Robotics..............................................       --       --   6,323
Services and other....................................    7,728    5,228   4,995
                                                       -------- -------- -------
  Total............................................... $152,303 $182,290 $92,948
                                                       ======== ======== =======
</TABLE>

      Gross Margin. Our gross margin was 39.9 percent of net sales in fiscal
year 1997, 43.8 percent of net sales in fiscal year 1998, and 35.6 percent of
net sales in fiscal year 1999. The decrease in the gross margin in fiscal year
1999 resulted because of the 49.0 percent drop in net sales from fiscal year
1998 and our inability to reduce our manufacturing overhead to compensate for
the lower revenues. We also increased our inventory reserves by $2.3 million
during the fiscal year ended March 31, 1999. In addition, significant orders
were received and shipped near the end of each quarter requiring higher levels
of overtime by our employees. Competition continued to put pressure on gross
margins in spite of continuing efforts to reduce costs through design changes
and manufacturing overhead reductions process improvements. In fiscal year
1998, gross margin was benefited by record net revenues and changes in our
product mix. Our load port product line, or

                                       25
<PAGE>


LPP, which has a higher gross margin than its other products, increased from
19.9 percent of net sales in fiscal 1997 to 43.7 percent of net sales in fiscal
1998. Gross margin on the LPP line in fiscal 1998 improved over the gross
margin in fiscal 1997 because of design improvements directed at reducing
manufacturing costs. We expect gross margin to improve and return to historical
levels as net sales increase to those achieved in fiscal years 1997 and 1998.
During fiscal year 1999, we operated a single shift in our manufacturing
operations. Given the level of net sales, we were only using about 60 percent
of our manufacturing capacity during that shift. We expect gross margins to
fluctuate because of pricing pressures from:

    .competition;

    .changes in product mix;

    .the rate of change in net sales;

    .changes in sales activities; and

    .customer demands for shorter lead times and the introduction of new
    products.

      Research and Development. Research and development expenses were $11.4
million, $16.6 million and $18.0 million for the years ended March 31, 1997,
1998 and 1999, respectively, representing 7.5 percent, 9.1 percent and 19.4
percent of net sales in those periods. The increase in research and development
expenses in fiscal year 1999, were due to increased spending for our new 300mm
products, the acquisition of HDI and continuing enhancements and additions to
its 200mm product line due to the transition to 300mm facilities by the
semiconductor industry. Research and development expenses consist of salaries,
project materials and other expenses related to our commitment to ongoing
product development efforts. We capitalize certain legal cost related to its
patents. To date, we have not capitalized costs associated with software
development because the costs incurred to date that are eligible for
capitalization have not been material. We expect our research and development
activities and related expenditures to increase in future periods.

      Selling, General and Administrative. Selling, general and administrative
expenses were $31.4 million or 20.6 percent of net sales, $37.7 million or 20.6
percent of net sales, and $41.9 million or 45.0 percent of net sales for the
year ended March 31, 1997, 1998 and 1999, respectively. Selling and marketing
expenses were $11.7 million or 7.7 percent of net sales, $14.1 million or 7.7
percent of net sales, and $14.7 million or 15.8 percent of net sales for the
same periods. The growth in selling and marketing expenses in fiscal year 1998
and 1999 is the result of our increased global presence and the development of
new customer relationships presented by the emerging 300mm technology. The
growth in selling and marketing expenses in fiscal year 1999 resulted primarily
from the acquisition of the FluoroTrac product line and HDI.

      General and administrative expenses were $19.7 million or 12.9 percent of
net sales, $23.6 million or 13.0 percent of net sales, and $27.2 million or
29.2 percent of net sales for fiscal years 1997, 1998 and 1999, respectively.
In fiscal year 1999, general and administrative expenses increased $3.5 million
over the prior year even though net sales decreased 49.0 percent, due largely
to the acquisition of the FluoroTrac product line and HDI. We incurred goodwill
amortization related to the two acquisitions of approximately $1.7 million.

      Other general and administrative expenses related to the acquisitions of
the FluoroTrac product line and HDI added another $1.9 million in the year
ended March 31, 1999. In addition, we incurred an additional $4.3 million of
legal expenses in connection with our patent infringement lawsuit that we
incurred in the prior year. We believe we will incur substantially lower legal
fees in connection with this lawsuit during the year ending March 31, 2000.
These increases in general and administrative expenses were offset by $2.0
million of expenses charged to our warranty reserves for warranty labor in
fiscal year 1999. In prior years, expenses related to warranty activities were
charged to general and administrative expenses. In response to the 49.0 percent
reduction in net sales, we reduced general and administrative expenses by an
additional $2.9 million.

      Restructuring Charge. In the year ended March 31, 1999, we underwent
significant restructuring of our operations to reduce our cost structure in
response to the 49.0 percent reduction in net sales. We restructured activities
in Japan and Europe to reposition our activities to compete more effectively.
In addition,

                                       26
<PAGE>

we repositioned our product offerings to eliminate low gross margin products or
software services that have high risks of failure. The following table
summarizes restructuring charges by geographic region:

<TABLE>
<CAPTION>
                                                    Cash outlays  Ending Accrual
                                                      through         as of
                                          Expensed March 31, 1999 March 31, 1999
                                          -------- -------------- --------------
                                                      (in thousands)
     <S>                                  <C>      <C>            <C>
     Europe
       Severance.........................  $1,732      $1,050         $  682
       Facilities........................     336         235            101
       Other.............................     437         130            307
     Japan
       Severance.........................     150          75             75
       Other.............................      35          --             35
     United States
       Severance.........................     700         500            200
       Facilities........................     550         300            250
       Other.............................   1,002         102            900
     Non-cash............................     600         n/a            n/a
                                           ------      ------         ------
       Total.............................  $5,542      $2,392         $2,550
                                           ======      ======         ======
</TABLE>

These restructurings resulted in the termination of the employment of 110 U.S.
employees and 30 international employees. Management had formal plans for each
of the activities undertaken and all affected employees were notified of the
actions. Other costs include expenses incurred for consultants and legal
services, equipment or service buy-out cost and any estimated incremental costs
associated with the closure of facilities or completion of other contractual
obligations.

      In-process Research and Development of Acquired Businesses and Product
Line. During the year ended March 31, 1999, we completed the acquisition of the
FluoroTrac product line and HDI. We acquired HDI using the purchase method of
accounting during the three months ended September 30, 1998. In connection with
the purchase price allocation related to the FluoroTrac product line and HDI,
we recorded write-offs of approximately $1.2 and $5.9 million, respectively, of
in-process research and development costs in the three months ended June 30,
1998 and September 30, 1998, respectively. The decision to write-off these
costs was primarily due to the fact that the acquired in-process research and
development related to the FluoroTrac product line and HDI had not yet reached
technological feasibility and had no perceived alternative future uses. This
technology is still being developed. Additionally, in November 1996, we
completed the acquisition of Radiance Systems, Inc., which was accounted for
using the purchase method of accounting. In connection with the purchase price
allocation, we recorded a write-off of $1.3 million of in-process research and
development in the three months ended December 31, 1996, as the acquired in-
process research and development had not yet reached technological feasibility
and had no perceived alternative future uses.

      Other Income (expense), Net. Other income (expense), net includes
interest income, interest expense, foreign exchange gain and loss, which has
not been material, and royalty income. The primary components are interest
income and royalties. In fiscal year 1997, other income (expense), net was less
than 1.0 percent of net sales. In fiscal year 1998, other income (expense), net
increased to 1.0 percent of net sales primarily because of the increase in
interest income on our significantly higher cash position throughout the year.
The improved cash and short-term investment position was the result of improved
receivable collection and a private placement of 1,000,000 shares of our common
stock in September 1997. In fiscal year 1999, other income (expense), net was
1.9 percent of net sales. The increase as a percentage of net sales was due
largely to the 49.0 percent decrease in net sales in 1999.

                                       27
<PAGE>

      Provision (Benefit) for Income Taxes. In fiscal years 1997, 1998 and 1999
the effective tax rates were 42 percent, 37 percent and 29 percent,
respectively. In fiscal year 1999, we experienced a net operating loss, which
generated a tax benefit of approximately $10.8 million. The benefit for income
taxes was impacted by foreign income and withholding taxes in excess of the
statutory rates, the lack of Foreign Sales Corporation benefit due to net
operating losses during the current year and limitations on State net operating
loss carryforwards. We have recorded a deferred tax asset of approximately
$19.1 million, of which $10.8 million relates to net operating losses and tax
credits generated during the current year. We will be able to realize in cash
approximately $5.0 million of the deferred tax asset immediately following the
filing of carryback claims with Federal and various State taxing authorities,
which will be completed in the near future. Realization of the remaining
deferred tax asset is dependent on generating sufficient future taxable income.
Although realization is not assured, management believes that it is more likely
than not that the deferred tax assets will be realized. Although the deferred
tax asset is considered realizable, actual amounts could be reduced if
sufficient future taxable income is not achieved. In fiscal 1998, we were able
to recognize certain tax benefits related to Foreign Sales Corporation benefit
and tax exempt income. The effective rate in fiscal 1997 was impacted by the
write-off of the in-process research and development expenses related to the
acquisition of Radiance Systems.

      Our provision for income taxes differs from the expected tax expense
(benefit) amount by applying the statutory Federal income tax rate of 35
percent to income (loss) before income taxes as a result of state income taxes,
permanent items and the application of the valuation allowance associated with
the deferred tax assets generated by PST acquisition.

      Prior to the acquisition of PST, PST provided a valuation allowance to
offset the deferred tax asset in the amount of $3.1 million due to
uncertainties regarding the future realization of net operating loss
carryforwards and other deferred tax assets. As of March 31, 1999, PST had
Federal net operating loss carryforwards of approximately $5.3 million, which
will expire beginning in fiscal 2012. The utilization of the net operating
losses may be subject to a substantial annual limitation due to the "change in
ownership" and consolidated loss provisions of the Internal Revenue Code.
Subsequent to the acquisition, PST will be included in our consolidated income
tax return.

      Discontinued Operations. In January 1997, we adopted a formal plan to
close Asyst Automation Inc. by the end of September 1997, which was accounted
for in the three months ended December 31, 1996. In December 1997, it was
determined that an additional reserve of $1.8 million, net of a tax benefit of
$1.0 million, was necessary. All of the amounts reserved in connection with the
closure of Asyst Automation have been used as of March 31, 1999. In September
1997, we entered into an asset purchase agreement with PAT, pursuant to which
we sold to PAT, a related party, some intellectual property rights and office
equipment which were owned or licensed by Asyst Automation.

Selected Quarterly Financial Data

      The following table presents unaudited consolidated quarterly financial
information for each of the six quarters ended September 30, 1999. In the
opinion of management, this information has been prepared on the same basis as
the audited consolidated financial statements incorporated by reference in this
registration statement and includes all adjustments, consisting only of normal
recurring adjustments, necessary to present fairly the unaudited quarterly
results of operations set forth herein. Significant fluctuations have occurred
in the results of operations for each of the three months ended September 30,
1998, June 30, 1999 and September 30, 1999, principally due to the conditions
discussed in the preceding sections. Due to the decrease in our sales volume in
fiscal 1999 that resulted from world-wide reductions in capital spending of the
major semiconductor manufacturers, we were unable to reach economies of scale
needed to reduce overhead and other spending to be consistent with the rates
associated with the larger sales volume that we experienced during comparable
quarters in the prior fiscal year. As our quarterly results have been subject
to fluctuation in the past, the operating results for any quarter are not
necessarily indicative of results for any future period. The first three

                                       28
<PAGE>

quarters of our fiscal year end on a Saturday, and thus the actual date of the
quarter-end is usually different from the month-end dates used throughout this
registration statement.

<TABLE>
<CAPTION>
                                         Fiscal Quarter Ended
                           ----------------------------------------------------
                            Jun.              Dec.     Mar.     Jun.     Sept.
                             30,   Sep. 30,    31,      31,      30,      30,
                            1998     1998     1998     1999     1999     1999
                           ------- --------  -------  -------  -------  -------
                                            (in thousands)
<S>                        <C>     <C>       <C>      <C>      <C>      <C>
Net sales................  $37,441 $ 18,900  $17,911  $18,695  $27,086  $40,696
Cost of sales............   19,724   15,450   11,577   13,143   15,840   22,327
                           ------- --------  -------  -------  -------  -------
  Gross profit...........   17,717    3,450    6,334    5,552   11,246   18,369
Operating expenses:
  Research and
   development...........    4,540    4,459    4,523    4,505    4,235    4,456
  Selling, general and
   administrative........   10,545   12,297   10,409    8,608   11,342   12,343
  In-process research and
   development of
   acquired businesses
   and product line......    1,200    5,900      --       --       --     4,000
  Restructuring charge...      --     2,922      --     2,620      --       --
                           ------- --------  -------  -------  -------  -------
  Total operating
   expenses..............   16,285   25,578   14,932   15,733   15,577   20,799
                           ------- --------  -------  -------  -------  -------
  Operating income (loss)
   ......................    1,432  (22,128)  (8,598) (10,181)  (4,331)  (2,430)
Other income (expense),
 net.....................      355    1,131      361     (110)     (14)     299
                           ------- --------  -------  -------  -------  -------
Income (loss) before
 income taxes............    1,787  (20,997)  (8,237) (10,291)  (4,345)  (2,131)
Provision (benefit) for
 income taxes............      887   (6,858)  (2,042)  (2,794)  (1,477)     635
                           ------- --------  -------  -------  -------  -------
Net income (loss)........  $   900 $(14,139) $(6,195) $(7,497) $(2,868) $(2,766)
                           ======= ========  =======  =======  =======  =======
Basic earnings (loss) per
 share...................  $  0.07 $  (1.20) $ (0.54) $ (0.65) $ (0.23) $ (0.22)
                           ======= ========  =======  =======  =======  =======
Shares used in basic per
 share calculation.......   12,148   11,746   11,455   11,602   12,228   12,828
                           ======= ========  =======  =======  =======  =======
Diluted earnings (loss)
 per share...............  $  0.07 $  (1.20) $ (0.54) $ (0.65) $ (0.23) $ (0.22)
                           ======= ========  =======  =======  =======  =======
Shares used in diluted
 per share calculation...   12,761   11,746   11,455   11,602   12,228   12,828
                           ======= ========  =======  =======  =======  =======
</TABLE>

Liquidity and Capital Resources

      Since inception, we have funded our operations primarily through the sale
of equity securities and public stock offerings, customer pre-payments, bank
borrowings and cash generated by our operations. As of September 30, 1999, we
had approximately $30.7 million in cash, cash equivalents and short-term
investments and approximately $80.6 million of working capital. In June 1998,
our Board of Directors authorized a stock repurchase program to repurchase up
to 2,000,000 shares of our common stock. In May 1999, we announced the
cancellation of the repurchase program and subsequently completed a sale of
625,000 shares of our common stock to eight institutional investors. At the
time of the cancellation, we had repurchased a total of 865,800 shares of
common stock at an aggregate cost of approximately $11.5 million. The sale was
priced at $18.00 per share and generated proceeds of approximately $11.3
million. The purpose of this transaction was to remove the tainted shares of
common stock to obtain pooling-of-interests accounting treatment for the
acquisition of PST. Additionally, during the third and forth quarters of fiscal
1999 and the first quarter of fiscal 2000, we reissued the remaining 240,800
shares of acquired common stock in connection with our employee stock programs,
which generated net proceeds of approximately $3.2 million. The proceeds from
the recent capital stock transactions will be used for general corporate
purposes.

      Under two separate working lines of credit agreements with a bank, PST
was able to borrow up to $7.0 million conditioned upon meeting certain
financial covenants. In June 1999, in conjunction with the acquisition of PST,
all borrowings against the line of credit agreements were repaid. Subsequently,
the line of credit agreements expired and in light of our working capital
position and in efforts to reduce overhead costs, we decided not to renew the
line of credit agreements.

                                       29
<PAGE>


      In September 1999, we entered into an alliance with MECS to sell our
products and provide local customer support in the Japanese market. In October
1999, we purchased approximately 9 2/3 percent of the common stock of MECS in
exchange for approximately $1.5 million. We also have an option to purchase at
least 66 2/3 percent of the common stock of MECS once MECS meets various
operating performance levels and disposes of its non-core subsidiaries. If we
were to acquire 66 2/3 percent of the common stock of MECS, then we will spend
approximately $8.4 million. If we were to acquire 100 percent of the common
stock of MECS, then we will spend approximately $13.4 million. As of March 31,
1999, MECS had long-term debt and bonds, including the current portions,
totaling approximately $34.0 million with interest rates ranging between 1.4
percent to 1.8 percent per annum.

      The nature of the semiconductor industry, combined with the current
economic environment, makes it very difficult for us to predict future
liquidity requirements with certainty. We believe that our existing cash and
cash equivalents, cash generated from operations and existing sources of
working capital will be adequate to finance our operations through March 31,
2000.

Year 2000 Compliance Initiative

      What is commonly referred to as the Year 2000 issue arises because many
computer systems use only two digits to represent the year portion of a date.
As a result, these systems may fail to properly calculate dates and date-
related computations at, around or after January 1, 2000, resulting in
erroneous results or system failures.

      In conjunction with third-party expert consultants, we have launched a
comprehensive program to assess and address our potential exposures. The
program is substantially complete with the exception of PST as noted below.

      With respect to our internal business systems, we are working with the
third party vendors of such systems to ensure Year 2000 compliance either
exists today or will be achieved through vendor supplied upgrades in a timely
manner. Our principal enterprise resource planning system has been certified
Year 2000 compliant by its manufacturer and has passed in-house compliance
testing. We believe that except for a systematic failure outside our control,
such as a prolonged loss of electrical power or telephone service, Year 2000
problems of these third parties will not have a material impact on operations.

      Our products have been, and will continue to be, evaluated for Year 2000
compliance. Many products have been found to be compliant today and others have
been found to require modest modification to be compliant. Programs are in
place and are being further developed to complete such modifications, for both
future shipments and in the customer installed base.

      Also being assessed is the potential impact on Asyst of non-compliance by
suppliers, subcontractors, business partners and customers. As part of that
assessment, we have requested, in writing, assurances from these third parties
that they are Year 2000 compliant. Some of these third parties have indicated
that they are Year 2000 compliant. Others are still in the process of their own
compliance reviews. If we identify that a third party has a material Year 2000
compliance issue, we will work with the third party to resolve the issue or
identify another supplier or service provider that is Year 2000 compliant.

      With the acquisition of PST in June 1999, additional products and systems
must be integrated into our Year 2000 compliance program. These efforts are
still underway but we expect to complete the necessary elements of the program
prior to December 31, 1999.

      Our total incremental cost of assessing and remediating our systems and
product Year 2000 issues is estimated to be between $0.5 million and $1.0
million. Approximately $0.2 million has been spent as of March 31, 1999, with
between $0.2 million and $0.4 million in capital expenditures planned for the
first nine months of fiscal year 2000.


                                       30
<PAGE>

      While we are engaged in an ongoing Year 2000 assessment, we have not
developed any contingency plans at this time. The completion of the ongoing
assessment will include a determination of the need for, and nature and extent
of any contingency plans.

Quantitative and Qualitative Disclosures About Market Risk

      Although we operate and sell products in various global markets,
substantially all sales are denominated in the U.S. dollar therefore reducing
the foreign currency risk. To date, the foreign currency transactions and
exposure to exchange rate volatility have not been significant. We cannot
anticipate with certainty the effect of inflation on our operations. To date,
inflation has not had a material impact on our net sales or results of
operations, however, with the industry's upturn currently underway; labor
markets are tightening thus putting upward pressure on current labor costs. Our
exposure to market risk for changes in interest rates relate primarily to the
investment portfolio. Our investment portfolio consists of short-term, fixed
income securities and by policy is limited by the amount of credit exposure to
any one issuer. Fixed rate securities have their fair market value adversely
affected due to rise in interest rates. To date, the change in interest rate
markets has not had a material impact on our results of operations or the
market value of our investments. There can be no assurance that foreign
currency risk, inflation or interest rate risk will not have a material impact
on our financial position, results of operations or cash flow in the future.

                                       31
<PAGE>

                                    BUSINESS

Overview

      We are the leading provider of SMIF-based minienvironment and
manufacturing automation systems that enable semiconductor manufacturers to
increase their manufacturing productivity and protect their investment in
silicon wafers during the manufacturing of integrated circuits. We offer a
broad range of products that enable us to provide semiconductor manufacturers
and OEMs with automated solutions for the transfer of wafers and information
between the process equipment and the rest of the facility. We are the only
supplier with expertise in what we believe are the key elements required to
provide the semiconductor manufacturing industry with integrated facility
automation solutions. We provide facility automation solutions in the areas of
isolation systems, work-in-process materials management, substrate-handling
robotics, automated transport and loading systems, and connectivity automation
software.

      Currently, we believe we offer the most comprehensive product line
addressing the needs of the portal automation market. Portal automation systems
use a standard interface to transfer wafers and information between the process
equipment minienvironment and pods. We believe we are uniquely positioned to
provide OEMs with a comprehensive solution for automation-enabling process
equipment front ends.

      We believe that semiconductor manufacturers are able to obtain a higher
level of productivity from their equipment by integrating our products into the
semiconductor manufacturing process. Our products protect valuable wafers
throughout the manufacturing process by providing semiconductor manufacturers
with efficient contamination control, wafer level identification, and tracking
and logistics management.

Industry Background

      Advances in electronics technology have resulted in the development of
increasingly sophisticated ICs based on submicron geometries and complex
manufacturing processes. Modern IC design and verification techniques have
enabled semiconductor companies to rapidly design and manufacture semi-custom
and custom products addressing specific customer requirements. Thus, in
addition to producing high volumes of a limited number of standard products,
many large semiconductor manufacturing facilities produce varying volumes of a
wide range of products and are required to adapt readily to changing customer
and market requirements.

      Semiconductor manufacturers face challenges in achieving and maintaining
high production yields, improving utilization of expensive facilities and
equipment and managing the logistics of increasingly complex semiconductor
fabrication processes. In order to meet these challenges these manufacturers
must improve their productivity and reduce their operating costs while
continuing to invest in new technology.

      Semiconductor manufacturers are currently making, and are expected to
continue to make, significant investments in manufacturing capacity through the
construction of new 200mm wafer facilities and the upgrade of existing 150mm
and 200mm wafer facilities. Additional investments are expected to occur as the
industry transitions to 300mm wafer facilities. Dataquest, an independent
research group, estimates that in 1999 semiconductor manufacturers will spend
$14.6 billion on the construction of new 200mm wafer facilities and upgrades to
existing 150mm and 200mm wafer facilities and that this spending will grow to
$30.0 billion in 2002. This represents a compound annual growth rate of 27
percent. Dataquest also estimates that spending on 300mm wafer facilities will
grow from $530 million in 1999 to $3.3 billion in 2002, representing a compound
annual growth rate of 84 percent.

      Semiconductor manufacturers are seeking to improve the production yields
of their facilities by utilizing minienvironment technology and manufacturing
automation systems to minimize wafer mishandling, misprocessing and
contamination. Minienvironment technology focuses on control of the environment
in the immediate vicinity of the in-process wafers and the processing
equipment. Minienvironment systems consist of

                                       32
<PAGE>


enclosures with engineered airflows that encapsulate process equipment, pods
that hold wafers and robotics systems that transfer wafers into and out of
process equipment through a portal. Manufacturing automation systems increase
productivity by managing the flow of wafers throughout the production process
and are segmented by function as follows:

    .  Facility Automation Systems. These systems use robotics to manage the
       transportation of wafers throughout the facility as they move between
       process equipment, referred to as tools. Facility automation systems
       also provide work-in-process management systems that track and store
       wafers throughout the manufacturing process. These systems include
       overhead rail systems, automated storage and retrieval systems, hoist
       systems and system control software.

    .  Portal Automation Systems. These systems use a standard interface,
       such as SMIF, to transfer wafers and information between the process
       equipment minienvironment and pods. The wafers are then transported,
       in pods, to storage systems or to other process equipment. An
       integrated portal automation system includes atmospheric robots,
       environmental control systems, integrated input/output interfaces,
       automated identification and tracking systems, pods and connectivity
       automation software.

    .  Tool-centric Automation Systems. These systems manage the movement of
       wafers in the vacuum environment within the process equipment. Tool-
       centric automation systems include robots, wafer handling systems,
       environmental control software and thermal conditioning modules.

      A growing portion of the semiconductor capital equipment spending is
attributable to manufacturing automation systems. Dataquest estimates that in
1999, semiconductor manufacturers will spend $906 million on manufacturing
automation and control systems and that this will grow to $2.3 billion by 2002,
representing a compound annual growth rate of 36 percent.

      The increased complexity of semiconductor manufacturing combined with the
availability of more efficient processes is acting as a catalyst for
significant investment in flexible and scalable solutions that meet customer
requirements while improving manufacturer profitability. Semiconductor
manufacturers are embracing integrated systems in order to avoid designing
systems themselves and to secure consistent maintenance and standard
operational interfaces. OEMs are purchasing integrated systems to allow them to
focus on their core competency of process implementation. In addition,
integrated solutions reduce the complexity of combining multiple systems and
serve to optimize processes. The trend towards process productivity
optimization places a premium on integrated automation systems.

The Asyst Solution

      We are the leading provider of SMIF-based minienvironment and
manufacturing automation systems that enable semiconductor manufacturers to
increase their manufacturing productivity and protect their investment in
wafers. We offer a broad range of products that enable us to provide
semiconductor manufacturers and OEMs with automated solutions for the transfer
of wafers and information between the process equipment and the rest of the
facility. Our products provide the following key benefits to semiconductor
manufacturers:

      Comprehensive Solution. We are the only supplier with expertise in what
we believe are the five key elements required to provide the semiconductor
manufacturing industry with integrated facility automation solutions. We
believe these elements are:

      .isolation systems;

      .work-in-process materials management;

                                       33
<PAGE>

      .substrate-handling robotics;

      .automated transport and loading systems; and

      .connectivity automation software.

      Currently, we believe we offer the most comprehensive product line
addressing the needs of the portal automation market. Our comprehensive product
line allows semiconductor manufacturers to source their entire portal
automation needs from one vendor. Our integrated solutions provide
semiconductor manufacturers with several advantages, including standard
maintenance and training, uniform user interface and single vendor
accountability.

      Increased Productivity of the Manufacturing Process. We believe that
semiconductor manufacturers are able to attain a higher level of productivity
and performance from their equipment by integrating our products into their
manufacturing process. In addition, our connectivity software provides
semiconductor manufacturers with facility ready automation capabilities,
resulting in faster implementation times and more efficient operational
productivity. With automated transportation and loading solutions, yield loss
associated with mishandling is reduced and the semiconductor manufacturer
receives the benefit of timely wafer delivery, thereby realizing significantly
improved equipment utilization and productivity over non-automated transport
and equipment loading. Our products provide flexibility by allowing
semiconductor manufacturers the ability to add capacity while minimizing
disruption of ongoing production in the facility.

      Value Assurance Through Wafer Protection. Increasingly sophisticated ICs
based on smaller geometries have resulted in an increase in the value of a
container of wafers. Today, a container of wafers can be worth in excess of
$500,000. Our isolation technology and robotics solutions provide semiconductor
manufacturers with efficient contamination control throughout the semiconductor
manufacturing process, effectively protecting valuable wafers from
contamination. This improved environmental control allows semiconductor
manufacturers to increase yields faster as well as attain higher eventual
yields. Using our work-in-process materials management and connectivity
software, the IC manufacturer receives the benefits of wafer level
identification, tracking and logistics management, as well as the ability to
minimize yield loss associated with misprocessing.

Strategy

      We have achieved success in serving the 150mm and 200mm wafer markets by
applying our extensive experience in isolation technology, material tracking
and factory automation to enable highly efficient semiconductor manufacturing.
Our strategy is to continue to build upon our success and further capitalize on
the accelerating demand for our technology. The principal elements of our
strategy are:

    .  Capitalize on Demand for New 200mm Facilities and Existing Facility
       Upgrades .  Increased demand for advanced ICs is fueling the
       construction of new 200mm facilities and upgrades of existing
       facilities. Semiconductor manufacturers are incorporating integrated
       SMIF-based automation systems in their facilities in order to
       optimize manufacturing productivity. We intend to continue to
       enhance our leadership position and our technical expertise in this
       market by developing increasingly efficient automation solutions for
       the 200mm market.

    .  Focus on Portal Automation. Our portal automation solutions
       integrate atmospheric robots, environmental control systems,
       integrated input/output interfaces, auto identification and tracking
       systems, pods and connectivity software. Our portal automation
       solutions allow equipment manufacturers to improve productivity and
       decrease their total cost and time to market. We believe the
       increased rate of acceptance of SMIF and minienvironment solutions
       in 200mm facilities indicates that equipment manufacturers are more
       likely to adopt our more advanced tool portal automation systems. We
       believe that by leveraging our existing relationships with OEMs and
       semiconductor manufacturers we will be in a position to capitalize
       on the increasing demand for a standardized interface between the
       tool and the factory environment.

                                       34
<PAGE>


    .  Increase Penetration of the Japanese Market. According to Dataquest,
       in 1999 Japan will account for 29 percent of worldwide semiconductor
       production. We believe Japanese semiconductor manufacturers will
       continue to build 200mm facilities, continue to upgrade existing
       facilities and begin to build 300mm facilities. As a result, we
       believe that a significant opportunity exists for our products in
       the Japanese market. We intend to augment our ability to directly
       supply our products to Japanese customers by increasing our local
       presence in Japan. In September 1999, we entered into an alliance
       with MECS, a Japanese engineering and robotics company that will
       increase our presence in Japan and give us the ability to provide
       local engineering support, which we believe is critical to gaining
       market share in Japan.

    .  Leverage Success in 200mm to Capitalize on the Transition to
       300mm. We have achieved market leadership in SMIF-based systems for
       the 200mm wafer market. We believe that new 300mm wafer facilities
       will incorporate portal automation using similar technology. We
       intend to leverage our success in 200mm manufacturing automation
       technology to capitalize on the 300mm market. Our experience in
       portal automation and SMIF technology provides us with a unique
       platform from which to transition our existing technology to 300mm
       wafer tools. Our 300mm products are currently being used in 300mm
       pilot lines.

    .  Build on Strong End User Relationships to Increase Demand for our
       Products from OEMs. The demand for our products has been enhanced by
       the strong relationships we have developed with semiconductor
       manufacturers, the end users of our products. By working closely
       with these semiconductor manufacturers, we are able to better
       understand their specific process requirements and, in turn, educate
       them on the benefits of our products. Ultimately, this process
       encourages our end users to specify our products to OEMs as the
       preferred solution, thereby creating additional demand for our
       products.

Products

      Our products enable semiconductor manufacturers to increase yield and
production efficiency. We offer products in the areas of isolation systems,
work-in-process materials management, substrate-handling robotics, automated
transport and loading systems, and connectivity automation software. We have
incorporated the technologies from these areas to create our Plus-Portal System
which we offer to OEMs.

Isolation Systems

      The Asyst-SMIF System is designed to provide a continuous, ultraclean
environment for semiconductor wafers as they move through the manufacturing
facility. Asyst-SMIF Systems can significantly reduce contamination by using
minienvironments to protect the in-process wafers and processing equipment from
exposure to contaminants caused by the human handling of cassettes and the
migration of contaminants from elsewhere in the cleanroom.

      The Asyst-SMIF System consists of three main components:

    .  SMIF-Pods, used for storage and transport of 200mm wafers, and
       front-opening unified pods, or FOUPs, used for storage and
       transportation of 300mm wafers;

    .  SMIF-Enclosures, which provide custom minienvironment chambers built
       around processing equipment to reduce contamination; and

    .  input/output systems including SMIF-Arms, SMIF-Indexers, SMIF-LPIs,
       SMIF-LPOs, SMIF-LPTs and related products, which transfer the wafers
       from the SMIF-Pod into the process tool or SMIF-Enclosure thereby
       preventing the mishandling of wafers. In addition to our standard
       Asyst-SMIF System products, we also offer our advanced SMIF-E
       System, which provides the capability to store, transport and
       transfer the product in a controlled environment to reduce
       contamination by water vapor, oxygen and airborne molecular
       contaminants.

                                       35
<PAGE>

      We also offer the Asyst-SMIF System for the handling and isolation of
reticles, a template used to transfer the circuit pattern onto the wafer
surface.

Work-in-Process Materials Management

      The Asyst SMART-Traveler System allows semiconductor manufacturers to
reduce manufacturing errors by significantly decreasing the opportunities for
operator-associated misprocessing during the production process. The Asyst
SMART-Traveler System includes SMART-Tag, an electronic memory device that
combines display, logic and communication technologies to provide information
regarding the wafers inside the carrier, and the FluoroTrac Auto ID System,
which uses a radio-frequency based identification tag that can be attached to
or embedded into wafer carriers or storage boxes.

      The Asyst SMART-Traveler System also includes the SMART-Comm, a
multiplexing and communication protocol converting device that increases
operator and tool efficiency in semiconductor facilities by optimizing
communications and minimizing hardware and software layers, and the SMART-
Storage Manager, an interactive system built around a personal computer and a
network of controllers and communication probes that provides work-in-process
control and management of wafers in storage racks or automated stockers.

      Our substrate management systems, or sorters, are used to rearrange
wafers and reticles between manufacturing processes without operator handling,
which helps to increase a facility's yields. Sorters avoid the mishandling of
wafers by enabling the tracking and verification of each wafer throughout the
production process. Sorters also reduce scratches by automating the handling of
wafers. Substrate management systems utilize our input/output systems, auto
identification systems, robots, prealigners and minienvironment technology.

Substrate-Handling Robotics

      We offer comprehensive robotic wafer handling solutions to the
semiconductor industry. Our products are incorporated by OEMs for use outside
of the semiconductor process tool to move wafers up to 300mm in diameter
between input/output systems and process stations. These products include
robots specifically designed for atmospheric, harsh chemical or wet chemical
process applications and prealigners used to orient the wafer. We also use our
robots and prealigners in our Plus-Portal System and wafer sorter products.

      Our Axys robot family includes atmospheric robots used in metrology and
other clean room tools and harsh chemical robots used in chemical mechanical
polishing and plating processes. The Hine 4.3A robot family consists of
atmospheric and harsh chemical robots used in chemical mechanical polishing
tools to transport wafers through the entire processing sequence from input
cassettes through multiple polishing stages, wafer cleaning steps and back to
output cassettes. Our prealigners are used to locate the exact center of a
wafer and to locate and orient a feature on the circumference of the wafer,
important steps in processing wafers.

Automated Transport and Loading Systems

      Automated transport and loading systems move wafer containers into and
out of tools and between process locations in semiconductor facilities. Our
automated transport and loading systems employ a unique concept referred to as
continuous flow. Competing systems use monorail vehicles or cars that can cause
delays in the facility when a monorail vehicle is not available at the correct
location to move material. Continuous flow transport, on the other hand, offers
significant improvements in factory efficiency by eliminating the need for
monorail vehicles to move wafers. Continuous flow transport loads SMIF-Pods or
FOUPs asynchronously onto our system and conveys them to the vicinity of the
next process location. Automated loading systems remove SMIF-Pods or FOUPs from
the transport system and deliver them to the tool loadport. The result is more
predictable wafer delivery times, which make process equipment loading more
efficient.

                                       36
<PAGE>

Connectivity Automation Software

     Software services for equipment automation solutions provide improved
material control, line yield and cycle time abilities, as well as increased
overall equipment effectiveness. In addition to automating the processing of
each wafer lot during the manufacturing cycle, the customizable software links
directly to the facility host system, thereby providing users with the ability
to pre-schedule material movement to specific process equipment. Our SMART-Fab
suite of Windows NT-based products focuses on the unique requirements of the
semiconductor fab. This suite includes SMART-Station, which uses workflow and
distributed object technology to rapidly automate fab equipment. Other SMART-
Fab products include SMART-Storage Manager and Global Lot Server. These
products provide material staging, work-in-process materials management and
global wafer lot location.

Plus-Portal System

     Our Plus-Portal System combines our expertise in isolation systems, work-
in-process materials management, substrate handling robotics and connectivity
automation software to provide a complete front end to a process tool. This
system use a standard interface, such as SMIF, to transfer wafers and
information between the process equipment minienvironment and pods. The wafers
are then transported, in pods, to storage systems or to other process
equipment. An integrated portal automation system includes atmospheric robots,
environmental control systems, integrated input/output interfaces, automated ID
and tracking systems, pods and connectivity automation software.

                         Asyst Plus-Portal System

                                   [GRAPHIC]

Customers

     Historically, our customers have primarily been semiconductor
manufacturers who are either building new manufacturing facilities or upgrading
existing facilities. Semiconductor manufacturers represent over 60 percent of
our net sales. We expect that semiconductor manufacturers will continue to
represent a majority of

                                       37
<PAGE>


our net sales because of the high number of 150mm and 200mm upgrade projects
anticipated during the next several years. As the industry migrates to 300mm
wafer facilities, we expect that a majority of our net sales will shift from
semiconductor manufacturers to OEMs. We believe that our historical
relationships with semiconductor manufacturers, coupled with our existing
relationship with OEMs, will enhance our ability to be designed into the OEM's
300mm products.

      Our net sales to a particular semiconductor manufacturer customer are
dependent on the number of facilities a semiconductor manufacturer is
constructing and the number of facility upgrades a semiconductor manufacturer
undertakes. As major projects are completed, the amount of sales to these
customers will decline unless new projects are undertaken by them.

      In fiscal year 1999, Worldwide Semiconductor Manufacturing Company
accounted for approximately 11 percent of our net sales and was the only
customer that accounted for more than 10 percent of net sales. For the six
months ended September 30, 1999, Taiwan Semiconductor Manufacturing Company
accounted for approximately 11 percent of net sales.

      Our ten largest U.S. and international customers based on cumulative
sales during fiscal 1997, 1998 and 1999, arranged alphabetically, were:

<TABLE>
     <S>                                       <C>
     Chartered Semiconductor Manufacturing,
      Ltd.                                     Submicron Technology Public Co.
     International Business Machines
      Corporation                              Taiwan Semiconductor Manufacturing Co. Ltd.
     Lam Research Corporation                  Tokyo Electron Ltd.
     Macronix International                    WaferTech LLC
                                               Worldwide Semiconductor Manufacturing Com-
     National Semiconductor                    pany
</TABLE>

Sales and Marketing

      We sell our products principally through a direct sales force in the
United States and the Asia/Pacific region. We market our products to
semiconductor manufacturers in Japan through our distribution relationship with
Innotech and to OEM customers through a direct sales force. We have notified
Innotech that we intend to terminate this relationship with them. Instead, we
intend to service the Japanese market through our strategic alliance with MECS.
Our sales organization is based in Northern California, and domestic field
sales personnel are stationed in Minnesota, Colorado, Arizona, Vermont,
Washington and Texas. The European market is supported through offices in the
vicinity of Horsham and Newport in the United Kingdom and Dresden, Germany. The
Asia/Pacific region is supported through sales and service offices in Hsin-Chu,
Taiwan; Singapore; Yokohama, Japan and Seoul, South Korea.

      International sales, which consist mainly of export sales from the U.S.,
accounted for approximately 51 percent, 64 percent and 57 percent of total
sales for fiscal 1997, 1998 and 1999, respectively. International sales
accounted for approximately 56 percent of total sales in the six months ended
September 30, 1999. International sales are invoiced in U.S. dollars and,
accordingly, have not historically been subject to fluctuating currency
exchange rates.

      The sales cycle for our products ranges from six months to as long as 12
months from initial inquiry to placement of an order, depending on the
complexity of the project. For sales to semiconductor manufacturers, the sales
cycle is relatively short for repeat customers and much longer for new
customers. In the case of a new customer, time is required to educate the
client as to the nature of SMIF technology and the related benefits. The sales
cycle involves many elements of Asyst including, sales, marketing, technology
and senior management.

      The sales cycle for an OEM customer is typically paced by the development
of new tools by the OEM customer. Our involvement in the tool's design cycle
begins in the very early stages, particularly for our Plus-Portal System, since
our products represent a major portion of the tool's architecture.

                                       38
<PAGE>


      An important part of our marketing strategy has been participation in key
industry organizations such as SEMATECH and SEMI, as well as attendance at
events coordinated by the Semiconductor Industry Association. In addition, we
actively participate in industry trade shows and conferences and have sponsored
symposiums with technology and business experts from the semiconductor
industry.

Systems Integration

      After a sales contract for our Asyst-SMIF System is finalized, our
systems integration and OEM applications organizations are responsible for the
engineering, procurement and manufacturing of SMIF-Enclosures and interfaces
necessary to integrate that system with the processing equipment. Our systems
integration organization provides integration, installation, qualification of
the Asyst-SMIF System and other services associated with the facility-wide
integration of an Asyst-SMIF System.

      Our systems integration and OEM applications organizations focus on
understanding our customer's manufacturing methodology and anticipated
production applications to develop customer-specific solutions. For
retrofitting and upgrading existing facilities with the minienvironment and
SMIF solution, our systems integration organization works with our customer's
facilities and manufacturing personnel to develop programs, schedules and
solutions to minimize disruption during the installation of our products into
our customer's facility. In the case of a new facility or tool design, our OEM
applications and systems integration organizations work with our customer's
facility planners and operations personnel, as well as with cleanroom
designers, architects and engineers.

      In the case of OEM integration, our OEM applications organization designs
and integrates the SMIF components directly into the processing equipment. Our
OEM applications organization works very closely with the OEM to understand the
process equipment and the processing requirements to provide our customer with
an optimized solution.

Research and Development

      Research and development efforts are focused on enhancing our existing
products and developing and introducing new products in order to maintain
technological leadership and meet a wider range of customer needs. Our research
and development expenses were approximately $11.4 million, $16.6 million and
$18.0 million during fiscal 1997, 1998, and 1999, respectively. Our research
and development expenses were approximately $9.0 million and $8.7 million for
the six months ended September 30, 1998, and September 30, 1999, respectively.

      Our research and development employees are involved in mechanical and
electrical engineering, software development, micro-contamination control,
product documentation and support. Our central research and development
facilities include a prototyping lab and a cleanroom used for product research,
development and equipment demonstration purposes. These research and
development facilities are located in Northern California. In addition, we
maintain a research and development facility in Austin, Texas, used for our new
efforts in the area of wafer sorting and reticle handling.

      Development efforts have intensified on the spectrum of products and
technologies needed to support both OEM and semiconductor manufacturer
customers. We have recently introduced the Plus-Portal Systems to meet the
needs of our OEM customers. In the area of transport systems, we are developing
systems based on the concept of continuous flow. This system makes process
equipment loading more efficient. Additionally, our development efforts in
robotics have resulted in a new robotic wafer transfer system that offers high
reliability and faster wafer transfer speeds.

      Semiconductor equipment and processes are subject to rapid technological
change including the anticipated shift in wafer size from 200mm to 300mm. As
the market shifts, new products and technologies

                                       39
<PAGE>

will be needed to manufacture the larger wafers. In addition, the development
of more complex ICs drives the need for new facilities, equipment and processes
to produce these devices at an acceptable cost and yield. We believe that our
future success will depend in part upon our ability to continue to enhance our
existing products to meet customer needs and to develop and introduce new
products which maintain technological leadership.

Manufacturing

      Our manufacturing activities consist of assembling and testing components
and sub-assemblies, which are then integrated into finished products. Once
completed, we perform final tests on all electronic and electromechanical sub-
assemblies and cycle products before shipment. Much of the cleaning, assembly
and packaging of our SMIF-Pods is conducted in cleanroom environments where
manufacturing personnel are clothed in cleanroom gowns to reduce particle
contamination.

      We currently maintain manufacturing facilities for our Asyst-SMIF
Systems, SMART-Traveler System products, Plus-Portal Systems and software
products and services in Fremont, California. We fabricate our custom SMIF-
Enclosures at both the Fremont facility and, in the case of large system
orders, near customer sites, where we lease temporary space for the manufacture
of SMIF-Enclosures. Our robotic products are manufactured in our Sunnyvale,
California facility. Our wafer management handling systems products and reticle
handling systems are assembled and integrated in our Austin, Texas facility.

      While we use standard components whenever possible, most mechanical
parts, metal fabrications and castings are made to our specifications. With the
recent increased demand for semiconductor manufacturing equipment, our
suppliers are straining to provide components on a timely basis and, in some
cases, on an expedited basis at our request. Although to date, we have
experienced only minimal delays in receiving goods from our key suppliers,
disruption or termination of these sources could have a temporary adverse
effect on our operations. Many of the components and subassemblies used in our
products are obtained from a single supplier or a limited group of suppliers.
We believe that, in time, alternative sources could be obtained and qualified
to supply these components in the ordinary course of business. However, a
prolonged inability to obtain these components could have an adverse effect on
our operating results and could result in damage to our customer relationships.
Shortages in components may result in price increases for components that could
decrease our margins and negatively impact our financial results.

Competition

      We currently face direct competition in all of our products. Many of
these competitors have extensive engineering, manufacturing and marketing
capabilities and potentially greater financial resources than those available
to us. Most competitors remain dedicated to a single product line in which we
compete. Our ability to provide a more complete automation and wafer isolation
solution provides a significant competitive advantage with respect to these
competitors. The markets for our products are highly competitive and subject to
rapid technological change. Several companies, including Brooks through its
acquisition of Jenoptik Infab, Inc., offer one or more products that compete
with our Asyst-SMIF System and SMART-Traveler System products. We compete
primarily with Entegris, Inc. in the area of SMIF-Pods. We also compete with
several competitors in the robotics area, including, but not limited to, PRI
and Kensington Labs. While price is a competitive factor in the sale of robots,
our ability to deliver quality, reliability and on time shipments are the
factors which will largely impact our success over our competition. With our
recent acquisition of PAT, we have acquired technology in the area of transport
automation systems which we expect to allow us to develop products in this
area. By entering this market, our transport products will face competition
from the main product line of PRI, as well as from Daifuku Co., Ltd. and Murata
Co., Ltd. With our acquisition of PST, we have acquired products in the area of
the storage and management of wafers and reticles. We compete primarily with
Irvine Optical Corporation in this area.

      In addition, the conversion to 300mm wafers is likely to draw new
competitors to the facility automation market. In the 300mm wafer market, we
expect to face intense competition from a number of

                                       40
<PAGE>

companies such as PRI and Brooks, as well as potential competition from
semiconductor equipment and cleanroom construction companies.

      We believe that the principal competitive factors in our market are the
technical capabilities and characteristics of systems and products offered,
technological experience and "know-how," product breadth, proven product
performance, quality and reliability, ease of use, flexibility, a global,
trained, skilled field service support organization, the effectiveness of
marketing and sales, and price. We believe that we compete favorably with
respect to the foregoing factors.

      We expect that our competitors will continue to improve the design and
performance of their products and to introduce new products with competitive
performance characteristics. We believe we will be required to maintain a high
level of investment in research and development and sales and marketing in
order to remain competitive.

Intellectual Property

      We primarily pursue patent, trademark and copyright protection for our
minienvironment and Asyst-SMIF System technology, our SMART-Traveler products,
our software products and our robotics technology. We currently hold fifty
patents in the United States, have eighteen pending patent applications in
process in the United States and intend to file additional patent applications
as appropriate. There can be no assurance that patents will be issued from any
of these pending applications or that any claims in existing patents, or
allowed from pending patent applications, will be sufficiently broad to protect
our technology.

      There has been substantial litigation regarding patent and other
intellectual property rights in semiconductor-related industries. While we
intend to protect our intellectual property rights vigorously, there can be no
assurance that any of our patents will not be challenged, invalidated or
avoided, or that the rights granted thereunder will provide us with competitive
advantages. Litigation may be necessary to enforce our patents, to protect our
trade secrets or know-how or to defend us against claimed infringement of the
rights of others or to determine the scope and validity of the patents or other
intellectual rights of others. Any such litigation could result in substantial
cost and divert the attention of management, which by itself could have a
material adverse effect on our financial condition and operating results.
Further, adverse determinations in such litigation could result in our loss of
intellectual property rights, subject us to significant liabilities to third
parties, require us to seek licenses from third parties or prevent us from
manufacturing or selling our products, any of which could have a negative
impact on our financial condition and results of operations.

      In October 1996, we filed a lawsuit against a number of defendants
including Jenoptik-Infab, Inc. alleging infringement of two patents related to
our SMART Traveler System and alleging breach of fiduciary duty and
misappropriation of trade secrets and unfair business practices. The defendants
filed counter claims alleging the patents invalid, unenforceable and not
infringed and alleging that we had violated federal antitrust laws and engaged
in unfair competition. In November 1998, the court granted defendants' motion
for partial summary judgment as to most of the patent infringement claims. In
January 1999, the court granted our motion for leave to seek reconsideration of
the November 1998 summary judgment order and also, pursuant to a stipulation of
the parties, dismissed without prejudice two of the three antitrust counter
claims brought by the defendants. Since then, the parties stipulated to the
dismissal with prejudice of the defendants' unfair competition and remaining
antitrust counter claim, and our breach of fiduciary duty, misappropriation of
trade secrets and unfair business practices claims. In June 1999, the court
granted our motion for reconsideration in the sense that it considered the
merits of our arguments, but did not change its prior summary judgment ruling
and also granted summary judgment for defendants on the remaining patent
infringement claim. We intend to take an appeal.

      We also rely on trade secrets and proprietary technology that we seek to
protect, in part, through confidentiality agreements with employees,
consultants and other parties. There can be no assurance that these agreements
will not be breached, that we will have adequate remedies for any breach, or
that our trade secrets

                                       41
<PAGE>

will not otherwise become known to or independently developed by others. Also,
the laws of some foreign countries do not protect our intellectual property
rights to the same extent as the laws of the United States.

Backlog

      Our backlog was approximately $51.4 million, $52.5 million and $32.3
million as of March 31, 1997, 1998 and 1999, respectively and was $58.8 million
as of September 30, 1999. During 1998 and 1999, our orders moved to more of a
turns business, orders placed to be shipped during the next two to three
months, as customers delayed orders until they were ready to take delivery,
apparently due to uncertainty in the near term capacity situation of the
semiconductor industry. By the end of fiscal year 1999, the backlog was greater
than sales for the current quarter which is more consistent with our past
experience. Ten customers with orders on backlog totaling between $0.6 million
to $7.3 million comprised 67 percent of the total backlog as of March 31, 1999.
We include in our backlog only orders for which a customer's purchase order has
been received and a delivery date within 12 months has been specified. Because
purchase orders are generally subject to cancellation or delay by customers
with limited or no penalty, our backlog is not necessarily indicative of future
revenues or earnings.

Employees

      As of September 30, 1999, we employed 623 persons on a full-time basis,
including 88 in research and development, 36 in software development, 192 in
manufacturing operations, 29 in system integration, 157 in sales and marketing,
which includes customer service, 59 in finance and administration and 62 in
international operations. Additionally, we employed 193 persons on a temporary
basis, including 170 in manufacturing operations. Many of our employees have
specialized skills of value to Asyst, and our future success will depend, in
large part, upon our ability to attract and retain highly skilled technical,
managerial, manufacturing, financial and marketing personnel, who are in great
demand. In particular, the Fremont, California and Hsin-Chu, Taiwan locations
have tight labor markets for the skilled employees we seek. We have never had a
work stoppage or strike and no employees are represented by a labor union or
covered by a collective bargaining agreement. We consider our employee
relations to be good. During fiscal year 1999, we restructured certain domestic
and international operations in response to the drop in our net sales. As a
result of these restructuring activities, we terminated the employment of
approximately 110 employees from our U.S. operations and approximately
30 employees from our international operations.

Facilities

      Our headquarters and principal manufacturing and research and development
activities are located in Northern California in four leased facilities. Our
headquarters in Fremont, California is approximately 91,300 square feet and is
pursuant to a lease expiring in October 2005. We have an option to extend this
lease for an additional five years. Our robotics facility in Sunnyvale,
California is approximately 45,100 square feet pursuant to a lease expiring in
August 2005. We also lease two adjoining manufacturing and research and
development facilities in Fremont, California the first of which is
approximately 35,400 square feet and is pursuant to a lease expiring in January
2005 and the second of which is approximately 17,700 square feet pursuant to a
lease expiring in January 2002. We have a right of first refusal to lease
additional space under the first lease and we have an option to renew the
second lease for an additional five years. We also have manufacturing and
research development activities located in Austin, Texas in a leased facility
of approximately 81,000 square feet. This lease expires in November 2005. We
have a right to lease additional space under this lease, and we have an option
to renew it for an additional term of five years. We have subleased
approximately 21,600 square feet of the premises under this lease to a third
party. The sublease expires in January 2000. In addition, we lease offices in
Arizona, Colorado, Maine, Massachusetts, Texas and Washington, for sales and
service support, as well as maintain one small regional manufacturing facility
in Vermont. Overseas, we have sales and service support offices in leased
facilities located in Germany, Japan, Singapore, South Korea, Taiwan and the
United States. We are currently looking for additional space to meet our needs
for additional capacity.

                                       42
<PAGE>

                                   MANAGEMENT

Executive Officers and Directors

      Our executive officers and directors, and their ages as of September 30,
1999, are as follows:

<TABLE>
<CAPTION>
Name                     Age Position(s)
- ----                     --- ----------
<S>                      <C> <C>
Mihir Parikh............  52 Chairman of the Board and Chief Executive Officer
Terry L. Moshier........  50 President and Chief Operating Officer
Anthony C. Bonora.......  56 Senior Vice President, Research and Development and Chief
                              Technical Officer
Douglas J. McCutcheon...  51 Senior Vice President, Chief Financial Officer
Dennis R. Riccio........  48 Senior Vice President, Global Customer Operations
Stanley Grubel..........  57 Director
Tsuyoshi Kawanishi......  70 Director
Ashok K. Sinha..........  55 Director
Walter W. Wilson........  55 Director
</TABLE>

      Mihir Parikh has served as Chairman of the Board and Chief Executive
Officer of the Company since July 1992. He has been a director of the Company
since he founded the Company in 1984 and served as the Company's President and
Chief Executive Officer from its inception to July 1992. From 1974 to 1984, he
held various management positions with Hewlett-Packard and International
Business Machines Corporation. In 1999, SEMI honored Dr. Parikh for his
pioneering work and outstanding contribution to semiconductor manufacturing
technology. Dr. Parikh received his Ph.D in Engineering-Physics from UC
Berkeley.

      Terry L. Moshier has served as President and Chief Operating Officer of
the Company since May 1997. From July 1996 to May 1997, Mr. Moshier served as
Executive Vice President and Chief Operating Officer of the Company. From June
1995 to June 1996, Mr. Moshier was on the Advisory Board of the Arizona
Technology Incubator Fund, a non-profit organization assisting start-up
technology companies. Prior to such time, Mr. Moshier was Senior Vice President
of Technology and Operations for Telxon Corporation, a designer and
manufacturer of hand-held wireless computers, from November 1993 to June 1995.
From June 1990 to October 1993, Mr. Moshier was Director of Operations of the
Motorola Computer Group, a wholly-owned subsidiary of Motorola.

      Anthony C. Bonora joined Asyst in 1984 and has been Senior Vice
President, Research and Development of the Company since 1986 and Chief
Technical Officer since January 1996. From 1975 to 1984, he held various
management positions at Siltec Corporation, a manufacturer of products for the
semiconductor industry, including Vice President, Research and Development and
General Manager of its Cybeq equipment division. In 1999, SEMI honored Mr.
Bonora for his pioneering work and outstanding contribution to semiconductor
manufacturing technology.

      Douglas J. McCutcheon joined the Company in January 1996 as Senior Vice
President, Chief Financial Officer. From January 1991 to November 1995, Mr.
McCutcheon was Vice President, Corporate Finance at Cadence Design Systems,
Inc., a design automation software company. Prior to 1991, Mr. McCutcheon was
President of Toshiba America Medical Credit, a captive financing subsidiary of
Toshiba America.

      Dennis R. Riccio joined the Company in August 1998. From January 1997 to
August 1998, Mr. Riccio served as President, USA Operations of Novellus
Systems, Inc., a semiconductor equipment manufacturer. From 1989 to January
1997, Mr. Riccio held various senior management positions at Applied Materials
Inc., a semiconductor equipment manufacturer.

                                       43
<PAGE>

      Stanley Grubel has served as a director of the Company since January
1997. Mr. Grubel has served as Chief Executive Officer of MiCRUS, a
manufacturer of CMOS wafers since September 1994. Between January 1990 and
September 1994, he was a Director of Procurement and Capital Planning for
International Business Machines Corporation. Mr. Grubel serves on the board of
directors of Central Hudson Gas & Electric Corporation.

      Tsuyoshi Kawanishi has served as a director of the Company since February
1996. He has served as Senior Adviser of Toshiba Corporation, a manufacturer of
electronic machinery and semiconductors, since June 1994. He previously held
the position of Senior Executive Vice President at Toshiba from June 1990 to
June 1994. Mr. Kawanishi also sits on the board of directors of Applied
Materials, Inc. and World Wide Semiconductor Manufacturing Ltd. (Taiwan). He is
also president of Japan's Society for Electronics Packaging and Chairman of the
Board of Singapore's Institute for Microelectronics.

      Ashok K. Sinha has served as a director of the Company since January
1997. Dr. Sinha has served as Group Vice President of Applied Materials, Inc.,
a semiconductor equipment manufacturer, since 1990 and is President of the
Metal Deposition Product Business Group of Applied Materials, Inc.

      Walter W. Wilson has served as a director of the Company since January
1995. Mr. Wilson serves as Senior Vice President, Business Integration and
Information Technology of Solectron Corporation, a provider of manufacturing
services to the electronics industry. Since joining Solectron in 1989, Mr.
Wilson has held numerous management positions including President of Solectron
California, President of Solectron North America and President of Solectron
Americas. Mr. Wilson also serves on the board of directors of Mylex
Corporation.

                                       44
<PAGE>

                   CERTAIN TRANSACTIONS WITH RELATED PARTIES

      In September 1997, we entered into an asset purchase agreement with PAT
pursuant to which we sold to PAT intellectual property rights and office
equipment which were owned or licensed by Asyst Automation, Inc., a
discontinued operation, in consideration for quarterly earn-out payments, up to
an aggregate of $2.0 million. In addition, PAT granted us the non-exclusive,
worldwide right to distribute and sell any of PAT's products on PAT's most
favorable distributor terms and conditions; provided that PAT could grant
exclusive distribution rights to particular markets so long as such rights were
first offered to Asyst and we did not accept the offer. We agreed that Mihir
Parikh, our Chairman of the Board and Chief Executive Officer, and Anthony
Bonora, our Senior Vice President, Research and Development and Chief
Technology Officer, could serve as the Chairman of PAT and an advisor to PAT,
respectively, provided they continued to meet their obligations as full time
employees of Asyst. In August 1999, we acquired all of the equity of PAT in a
stock purchase transaction for approximately $3.7 million and the repayment of
$0.8 million of debt and earn-out payments to certain PAT security holders
based on future transport automation product revenue in excess of certain
defined threshold amounts. Dr. Parikh received approximately $1.4 million in
proceeds from the sale of his shares of PAT for which he had paid approximately
$0.7 million. In addition Dr. Parikh received approximately $0.8 million for
the repayment of a loan he had made to PAT. Mr. Bonora received approximately
$0.2 million in proceeds from the sale of his shares of PAT for which he had
paid approximately $0.1 million. Neither Dr. Parikh nor Mr. Bonora participated
in the consideration or negotiation of this transaction by Asyst, nor are they
eligible to participate in any earn-out payments to the former PAT
shareholders.

      In April 1999, we entered into an employment agreement with Dr. Parikh.
The term of employment commenced on April 1, 1999, and extends for three years,
renewing daily, so that, absent notice by either party of an intent not to
continue the term, the term shall always be three years. The employment
agreement set Dr. Parikh's initial base salary at a minimum of $325,000
annually. Pursuant to the agreement, our Compensation Committee is obligated to
review his base salary for increase no less often than annually. In addition,
during the employment term, Dr. Parikh is eligible to receive annual bonuses
and to participate in our stock award/option grant plans. Also, he is eligible
to participate in any benefit plans maintained by Asyst for our employees. If
we terminate Dr. Parikh's employment without cause or if he terminates his
employment for good reason, either before or within six months following a
change in control he will be entitled to receive a lump-sum cash payment equal
to the present value of the sum of (1) three times his then annual base salary
and (2) three times an annual average bonus amount, determined under a formula
set forth in the employment agreement. Dr. Parikh will also be entitled to all
benefits that were payable to him at the time of termination and to continued
participation for 18 months thereafter, in the health and life insurance plans
of Asyst in which he was then a participant. In addition, during the term of
employment and for one year thereafter, unless his employment terminates
without cause or for good reason, he may not solicit our employees or customers
away from Asyst.

      In February 1999, we loaned Dennis Riccio, our Senior Vice President,
Global Customer Operations, $450,000 in order to facilitate his relocation to
California. This loan has an interest rate of 4.64 percent and is secured by a
second deed of trust on Mr. Riccio's California residence. This loan terminates
and shall be immediately due and payable upon the earlier of (1) January 31,
2004, (2) 30 days after the termination of Mr. Riccio's employment for cause or
after Mr. Riccio's resignation, or (3) the insolvency of Mr. Riccio.

      In November 1998, we entered into a severance agreement with William R.
Leckonby, the former President and Chief Operating Officer of Asyst Software,
Inc. Under the terms of this severance agreement, Mr. Leckonby resigned his
position with us and agreed to provide consulting services to us until July 16,
2000. From October 16, 1998 through June 30, 1999, Mr. Leckonby received
payment in the amount equal to his then current base salary. From June 30, 1999
through July 16, 2000, we will pay Mr. Leckonby consulting fees in the amount
of $250 per hour and up to $10,000 for outplacement assistance. In addition,
the vesting of Mr. Leckonby's options to purchase common stock of Asyst was
accelerated by 12 months.

                                       45
<PAGE>


      In November 1998, we loaned $350,000 to Mr. Riccio in order to assist Mr.
Riccio with the purchase of a new residence as part of his relocation to
California. The loan has an interest rate of 4.47 percent per annum. This loan
is secured by a deed of trust on real property owned by Mr. Riccio in Texas.
This loan terminates and shall be immediately due and payable upon the earlier
of (1) May 31, 2000, (2) 30 days after the termination of Mr. Riccio's
employment for cause or after Mr. Riccio's resignation, or (3) the insolvency
of Mr. Riccio.


                                       46
<PAGE>

                             PRINCIPAL SHAREHOLDERS

      Information with respect to beneficial ownership provided in the
following table is as of September 30, 1999, and is based upon information
furnished by each director and executive officer or contained in filings made
with the SEC. Beneficial ownership is determined in accordance with the rules
of the SEC and generally includes voting or investment power with respect to
securities. Beneficial ownership also includes shares of stock subject to
options and warrants currently exercisable or convertible, or subject to
community property laws where applicable, to our knowledge all persons named in
the table below have sole voting and investment power with respect to all
shares of common stock, shown as beneficially owned by them. Percentage of
beneficial ownership is based on 12,955,886 shares of common stock outstanding
as of September 30, 1999, and 14,955,886 shares of common stock outstanding
after completion of this offering.

<TABLE>
<CAPTION>
                                                                  Percent
                                                               Beneficially
                                                 Number of         Owned
                                                   Shares    -----------------
                                                Beneficially  Before   After
Name and Address of Beneficial Owner               Owned     Offering Offering
- ------------------------------------            ------------ -------- --------
<S>                                             <C>          <C>      <C>
Mihir Parikh(1)................................    879,056     6.47%    5.64%
 48761 Kato Rd.
 Fremont, CA 94538
J.&W. Seligman & Co., Incorporated.............    743,000     5.73%    4.97%
 100 Park Avenue
 New York, NY 10017
Terry L. Moshier(2)............................    136,391      *        *
Douglas J. McCutcheon(3).......................     97,776      *        *
Anthony C. Bonora(4)...........................     57,646      *        *
Dennis R. Riccio(5)............................     33,928      *        *
Walter W. Wilson(6)............................     29,582      *        *
Tsuyoshi Kawanishi(7)..........................     22,582      *        *
Stanley Grubel(8)..............................     17,082      *        *
Ashok K. Sinha(9)..............................     17,082      *        *
All directors and officers as a group (9
 persons)(10)..................................  1,291,125     9.23%    8.08%
</TABLE>
- --------
*   Less than one percent.

 (1) Includes 194,900 shares held of record by Mihir & Nancy Parikh Living
     Trust, dated April 3, 1986, of which Dr. Parikh is a trustee. Also
     includes 46,600 shares held by a custodian for the benefit of Dr. Parikh's
     minor children, of which Dr. Parikh disclaims beneficial ownership.
     Includes 637,556 shares subject to stock options exercisable within 60
     days of September 30, 1999.

 (2) Includes 136,391 shares subject to stock options exercisable within 60
     days of September 30, 1999.

 (3) Includes 95,739 shares subject to stock options exercisable within 60 days
     of September 30, 1999.

 (4) Includes 50,886 shares subject to stock options exercisable within 60 days
     of September 30, 1999

 (5) Includes 33,928 shares subject to stock options exercisable within 60 days
     of September 30, 1999.

 (6) Includes 27,000 shares subject to stock options exercisable within 60 days
     of September 30, 1999.

 (7) Includes 20,000 shares subject to stock options exercisable within 60 days
     of September 30, 1999.

 (8) Includes 14,500 shares subject to stock options exercisable within 60 days
     of September 30, 1999.

 (9) Includes 14,500 shares subject to stock options exercisable within 60 days
     of September 30, 1999.

(10) Includes an aggregate of 1,030,500 shares held by all directors and
     executive officers that are subject to options exercisable within 60 days
     of September 30, 1999. See Notes (1) through (9), above.

                                       47
<PAGE>

                                  UNDERWRITING

General

      Merrill Lynch, Pierce, Fenner & Smith Incorporated, Lehman Brothers,
Inc., Adams, Harkness & Hill, Inc. and Needham & Company, Inc., are acting as
representatives of each of the underwriters named below. Under the Purchase
Agreement among us and the underwriters, we have agreed to sell to each of the
underwriters, and each of the underwriters, severally and not jointly, has
agreed to purchase from us the number of shares of common stock stated opposite
its name below.

<TABLE>
<CAPTION>
                                                                        Number
     Underwriter                                                       of Shares
     -----------                                                       ---------
     <S>                                                               <C>
     Merrill Lynch, Pierce, Fenner & Smith
          Incorporated................................................
     Lehman Brothers, Inc.............................................
     Adams, Harkness & Hill, Inc......................................
     Needham & Company, Inc...........................................

                                                                       ---------
           Total...................................................... 2,000,000
                                                                       =========
</TABLE>

      Under the Purchase Agreement, the several underwriters have agreed to
purchase all of the shares of common stock being sold under the Purchase
Agreement if any shares of common stock are purchased. Under the Purchase
Agreement, the commitments of the non-defaulting underwriters may in some
circumstances be increased or the Purchase Agreement may be terminated.

      Under the Purchase Agreement, we have agreed to indemnify the several
underwriters against some liabilities, including some liabilities under the
Securities Act, or to contribute to payments the underwriters may be required
to make.

      The underwriters offer the shares of common stock, when as and if issued
to and accepted by them, subject to approval of some legal matters by counsel
for the underwriters and some other conditions. The underwriters reserve the
right to withdraw, cancel or modify such offer and to reject orders in whole or
in part.

Commissions and Discounts

      The representatives have advised us that they propose initially to offer
the shares of common stock to the public at the public offering price stated on
the cover page of this prospectus, and to some dealers at such price less a
concession not in excess of $    per share. The underwriters may allow, and
such dealers may reallow, a discount not in excess of $   per share on sales to
some other dealers. After the public offering, the public offering price,
concession and discount may be changed by the representatives.

      The following table shows the per share and total underwriting discounts
that we will pay to the underwriters. This information is presented assuming
either no exercise or full exercise by the underwriters of their over-allotment
options.

<TABLE>
<CAPTION>
                                                                  Without  With
                                                        Per Share Option  Option
                                                        --------- ------- ------
<S>                                                     <C>       <C>     <C>
Public offering price..................................    $        $      $
Underwriting discount..................................    $        $      $
Proceeds, before expenses, to Asyst....................    $        $      $
</TABLE>

      We will pay the expenses of the offering, estimated at $700,000.

                                       48
<PAGE>

Over-allotment Option

    We have granted to the underwriters an option exercisable for 30 days after
the date of this prospectus, to purchase up to an aggregate of an additional
300,000 shares of common stock at the public offering price stated on the cover
of this prospectus, less the underwriting discount. The underwriters may
exercise this option solely to cover over-allotments, if any, made on the sale
of the common stock offered by this prospectus. To the extent that the
underwriters exercise this option, each underwriter will be obligated, subject
to some conditions, to purchase a number of additional shares of common stock
proportionate to such underwriter's initial amount reflected in the table
above.

No Sales of Similar Securities

    We and our executive officers and directors have agreed for a period of 90
days after the date of this prospectus, subject to exceptions, not to directly
or indirectly issue, sell, or otherwise dispose of or transfer any shares of
common stock or securities convertible into or exchangeable or exercisable for
common stock, without the prior written consent of Merrill Lynch on behalf of
the underwriters.

Price Stabilization

    Until the distribution of the common stock is completed, rules of the
Securities and Exchange Commission may limit the ability of the underwriters
and some selling group members to bid for and purchase the common stock. As an
exception to these rules, the representatives are permitted to engage in some
transactions that stabilize the price of the common stock in connection with
this offering. Such transactions consist of bids or purchases for the purpose
of pegging, fixing or maintaining the price of the common stock.

    If the underwriters create a short position, i.e., sell more shares of
common stock than stated on the cover page of this prospectus, the
representatives may reduce that short position by purchasing common stock in
the open market. The representatives may also elect to reduce any short
position by exercising all or part of the over-allotment option described
above.

    Neither we nor any of the underwriters make any representation or
prediction as to the direction or magnitude of any effect that the transactions
described above may have on the price of the common stock. In addition, neither
we nor any of the underwriters make any representation that the representatives
will engage in such transactions or that such transactions, once commenced,
will not be discontinued without notice.

Other Relationships

    Some of the underwriters and their affiliates engage in transactions with,
and perform services for, our company in the ordinary course of business and
have engaged, and may in the future engage, in commercial banking and
investment banking transactions with our company, for which they have received
or may receive customary compensation.

                                 LEGAL MATTERS

    The validity of the issuance of the common stock offered hereby will be
passed upon for Asyst by Cooley Godward LLP, Palo Alto, California, and for the
underwriters by Morrison & Foerster LLP, San Francisco, California.

                                       49
<PAGE>

                                    EXPERTS

    The audited financial statements incorporated by reference in this
prospectus and elsewhere in the registration statement have been audited by
Arthur Andersen LLP, independent public accountants, as set forth in their
reports. In those reports, Arthur Andersen LLP states that with respect to
certain subsidiaries its opinion is based on the reports of other independent
public accountants, namely Ernst & Young LLP. The financial statements referred
to above have been incorporated by reference herein in reliance upon the
authority of Arthur Andersen LLP as experts in giving their reports.

    The consolidated financial statements of Progressive System Technologies,
Inc. and its subsidiary, which are not presented separately or incorporated by
reference in this Registration Statement have been audited by Ernst & Young
LLP, independent auditors, as stated in their report, which report is
incorporated herein by reference from the Asyst Technologies, Inc. Current
Report on Form 8-K/A dated August 16, 1999, and has been so incorporated in
reliance upon the report of such firm given upon their authority as experts in
accounting and auditing.

                       WHERE YOU CAN GET MORE INFORMATION

    We are a reporting company and file annual, quarterly and current reports,
proxy statements and other information with the Securities and Exchange
Commission, or the SEC. You may read and copy these reports, proxy statements
and other information at the SEC's public reference rooms in Washington, DC,
New York, NY and Chicago, IL. You can request copies of these documents by
writing to the SEC and paying a fee for the copying cost. Please call the SEC
at 1-800-SEC-0330 for more information about the operation of the public
reference rooms. Our SEC filings are also available at the SEC's web site at
"http://www.sec.gov." In addition, you can read and copy our SEC filings at the
office of the National Association of Securities Dealers, Inc. at 1735 "K"
Street, Washington, DC 20006.

      The SEC allows us to "incorporate by reference" information that we file
with them, which means that we can disclose important information to you by
referring you to those documents. The information incorporated by reference is
an important part of this prospectus, and information that we file later with
the SEC will automatically update and supersede this information. We
incorporate by reference the documents listed below and any future filings we
will make with the SEC under Section 13(a), 13(c), 14 or 15(d) of the
Securities Exchange Act of 1934:

    .  Annual Report on Form 10-K for the year ended March 31, 1999;

    .  Proxy Statement for the annual meeting of shareholders to be held on
       September 2, 1999;

    .  Current Report on Form 8-K filed June 18, 1999, as amended;

    .  Quarterly Report on Form 10-Q for the periods ended June 30, 1999 and
       September 30, 1999, as amended; and

    .  The description of the common stock contained in Asyst's Registration
       Statement on Form S-1, as filed on February 21, 1995 with the SEC.

      You may request a copy of these filings at no cost, by writing,
telephoning or e-mailing us at the following address:

                            Asyst Technologies, Inc.
                                48761 Kato Road
                               Fremont, CA 94538
                                 (510) 661-5000

    This prospectus is part of a Registration Statement we filed with the SEC.
You should rely only on the information incorporated by reference or provided
in this prospectus and the Registration Statement.

                                       50
<PAGE>




                [LOGO OF ASYST TECHNOLOGIES, INC. APPEARS HERE]
<PAGE>

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

                                2,000,000 Shares

                       [LOGO OF ASYST TECHNOLOGIES, INC.]

                                  Common Stock

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

                              P R O S P E C T U S

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

                              Merrill Lynch & Co.

                                Lehman Brothers

                          Adams, Harkness & Hill, Inc.

                            Needham & Company, Inc.

                                       , 1999

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
<PAGE>

                                    PART II

                     INFORMATION NOT REQUIRED IN PROSPECTUS

Item 14. Other Expenses of Issuance and Distribution

      The following table sets forth all expenses, other than the underwriting
discounts and commissions, payable by Asyst in connection with the sale of the
common stock being registered. All the amounts shown are estimates except for
the registration fee.

<TABLE>
   <S>                                                                 <C>
   SEC Registration fee............................................... $ 19,604
   NASD Filing fee....................................................    7,552
   Nasdaq additional listing fee......................................   17,500
   Printing and engraving expenses....................................  200,000
   Legal fees and expenses............................................  200,000
   Accounting fees and expenses.......................................  100,000
   Transfer Agent and Registrar Fees and expenses.....................   25,000
   Blue Sky Fees and expenses.........................................    5,000
   Miscellaneous......................................................  125,344
                                                                       --------
     Total............................................................ $700,000
                                                                       ========
</TABLE>

Item 15. Indemnification of Officers and Directors.

      The Company's Bylaws provide that Asyst will indemnify its directors and
officers to the fullest extent not prohibited by California law. The Company is
also empowered under its Articles of Incorporation and Bylaws to enter into
indemnification contracts with its directors, officers, employees and agents
and to purchase insurance on behalf of any person whom it is required or
permitted to indemnify. Pursuant to this provision, Asyst has entered into
indemnity agreements with each of its directors and officers.

      In addition, Asyst's Articles of Incorporation provide that, to the
fullest extent permitted by California law, Asyst's directors will not be
liable for monetary damages for breach of the directors' fiduciary duty of care
to Asyst and its shareholders. This provision in the Articles of Incorporation
does not eliminate the duty of care, and in appropriate circumstances,
equitable remedies such as an injunction or other forms of non- monetary relief
would remain available under California law. Each director will continue to be
subject to liability for breach of the director's duty of loyalty to Asyst, for
acts or omissions not in good faith or involving intentional misconduct or
knowing and culpable violations of law, that the director believes to be
contrary to the best interests of Asyst or its shareholders, involving a
reckless disregard for the director's duty to Asyst or its shareholders when
the director was aware or should have been aware of a risk of serious injury to
Asyst or its shareholders, or an unexcused pattern of inattention that amounts
to an abdication of the director's duty to Asyst or its shareholders, for
improper transactions between the director and Asyst and for improper
distributions to shareholders and loans to directors and officers or for acts
or omissions by the director as an officer. This provision also does not affect
a director's responsibilities under any other laws, such as the federal
securities laws or state or federal environmental laws.

      There is no pending litigation or proceeding involving a director,
officer, employee or other agent of Asyst as to which indemnification is being
sought, nor is Asyst aware of any pending or threatened litigation that may
result in claims for indemnification by any director, officer, employee or
other agent.

                                      II-1
<PAGE>

                               INDEX TO EXHIBITS

<TABLE>
<CAPTION>
    Exhibit
    Number                          Description of Document
 -------------                      -----------------------
 <C>           <S>
  1.1+         Underwriting Agreement.
  2.1(iv)      Stock Purchase Agreement among the Company, Hine Design
               Incorporated and the Shareholders of Hine Design Incorporated,
               dated July 2, 1998.
  2.2(vi)      Agreement and Plan of Merger and Reorganization among the
               Company, PSTI Merger Sub Acquisition Corp., Progressive System
               Technologies, Inc., Advent International Investor II, Envirotech
               Fund I and Global Private Equity II, dated as of June 2, 1999.
  2.3(xii)     Stock Purchase Agreement among the Company, Palo Alto
               Technologies, Inc. ("PAT"),
               the shareholders of PAT and the optionholders of PAT, dated
               August 27, 1999.
  2.4          Agreement for Sale and Purchase of Common Stock between MECS
               Corporation and the Company, dated September 27, 1999.
  3.1(i)       Amended and Restated Articles of Incorporation of the Company.
  3.2(xii)     Certificate of Amendment of the Amended and Restated Articles of
               Incorporation.
  3.3(i)       Bylaws of the Company.
  4.1(iii)     Common Stock Purchase Agreement, dated September 25, 1997.
  4.2(v)       Rights Agreement among the Company and Bank of Boston, N. A., as
               Rights Agents, dated June 25, 1995.
  4.3(vi)      Common Stock Purchase Agreement, dated as of May 26, 1999.
  5.1          Opinion of Cooley Godward LLP.
 10.1(i)       Form of Indemnity Agreement entered into between the Company and
               its directors and officers.
 10.2(i)(x)    Company's 1993 Stock Option Plan and related form of stock
               option agreement.
 10.3(i)(x)    Company's 1993 Employee Stock Purchase Plan and related offering
               document.
 10.4(i)(x)    Company's 1993 Non-Employee Directors' Stock Option Plan and
               related offering document.
 10.5(i)       Hewlett-Packard SMIF License Agreement dated June 6, 1984.
 10.6(viii)    Lease Agreement between the Company and the Kato Road Partners
               dated February 16, 1995.
 10.7(viii)    Sublease Agreement between the Company and the Kato Road
               Partners dated February 16, 1995.
 10.8(vii)     Asset Purchase Agreement between Palo Alto Technologies, Inc.,
               the Company and Asyst Automation, Inc., dated September 30,
               1997.
 10.9(ix)(x)   Loan Agreement A and Promissory Note Secured by Deed of Trust
               between the Company and Terry Moshier, all dated August 1, 1997.
 10.10(ix)(x)  Loan Agreement B, Promissory Note, and Loan Pledge Agreement
               between the Company and Terry Moshier, all dated August 1, 1997.
 10.11(x)(xiv) Secured Promissory Note between the Company and Dennis Riccio,
               dated November 16, 1998.
 10.12(x)(xiv) Secured Promissory Note between the Company and Dennis Riccio,
               dated February 1, 1999.
 10.13(xi)     Employment and Compensation Agreement between the Company and
               Mihir Parikh dated April 1, 1999.
 10.14(xii)    Lease Agreement between Aetna Life Insurance Company and Hine
               Design, Inc., dated August 4, 1995.
 10.15(xii)    Industrial Space Lease Agreement between PEN Associates and the
               Company, dated November 13, 1995, as amended.
 10.16(xii)    Lease Agreement between SL-6 Partners, Ltd. and Progressive
               System Technologies, Inc., dated November 20, 1995, as amended.
 10.17(xii)    Sublease Agreement between Progressive System Technologies, Inc.
               and Group, Inc., dated December 3, 1996.
</TABLE>

                                      II-2
<PAGE>

<TABLE>
<CAPTION>
 Exhibit Number                     Description of Document
 --------------                     -----------------------
 <C>            <S>
 10.18(xii)     Industrial Space Lease Agreement between PEN Associates and the
                Company, dated December 14, 1997.
 10.19(xii)     Separation Agreement between the Company and William R.
                Leckonby, dated November 9, 1998.
 10.20(xii)     Amendment to Lease between Kato Road Partners and the Company,
                dated July 30, 1999.
 10.21(xii)     Cooperation Agreement between MECS Corporation and the Company,
                dated August 5, 1999.
 10.22(x)(xiii) Long-term Incentive Compensation Plan.
 21.1*          Subsidiaries of the Company.
 23.1           Consent of Arthur Andersen LLP.
 23.2           Consent of Ernst & Young LLP.
 23.3           Consent of Cooley Godward LLP is contained in Exhibit 5.1 to
                this registration statement.
 24.1*          Power of Attorney is contained on the signature pages to this
                registration statement.
</TABLE>
- --------
 +To be filed by amendment.

 *Previously filed.
(i) Incorporated by reference to the Company's Registration Statement on Form
    S-1 (No. 33-66184), as amended.
(ii) Incorporated by reference to the Company's Registration Statement on Form
     S-1 (No. 33-88246), as amended.
(iii) Incorporated by reference to the Company's 8-K filed with the Securities
      Exchange Commission on October 10, 1997.
(iv) Incorporated by reference to the Company's 8-K filed with the Securities
     Exchange Commission on August 14, 1998.
(v) Incorporated by reference to the Company's 8-K filed with the Securities
    Exchange Commission on June 29, 1998.
(vi) Incorporated by reference to the Company's 8-K filed with the Securities
     Exchange Commission on June 18, 1999.
(vii) Incorporated by reference to the Company's 10-Q; quarter ended September
      30, 1997 (Confidential treatment granted).
(viii) Incorporated by reference to the Company's Annual Report on Form 10-K
       for the fiscal year ended March 31, 1995.
(ix) Incorporated by reference to the Company's Annual Report on Form 10-K for
     the fiscal year ended March 31, 1998.
(x) Management contract/compensation plan, contract or arrangement.
(xi) Incorporated by reference to the Company's Form 10-Q for the quarter ended
     June 30, 1999.
(xii) Incorporated by reference to the Company's Form 10-Q for the quarter
      ended September 30, 1999.
(xiii) Incorporated by reference to the Company's DEF 14A filed with the SEC on
       July 29, 1998.
(xiv) Incorporated by reference to the Company's Annual Report on Form 10-K405
      for the fiscal year ended March 31, 1999.

Item 17. Undertakings.

      The undersigned registrant hereby undertakes to deliver or cause to be
delivered with the prospectus, to each person to whom the prospectus is sent or
given, the latest annual report to security holders that is incorporated by
reference in the prospectus and furnished pursuant to and meeting the
requirements of Rule 14-3

                                      II-3
<PAGE>


or Rule 14c-3 under the Securities Exchange Act of 1934; and, where interim
financial information required to be presented by Article 3 of Regulation S-X
are not set forth in the prospectus, to deliver, or cause to be delivered to
each person to whom the prospectus is sent or given, the latest quarterly
report that is specifically incorporated by reference in the prospectus to
provide such interim financial information.



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

The undersigned registrant hereby undertakes that:

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

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

                                      II-4
<PAGE>

                                   SIGNATURES

      Pursuant to the requirements of the Securities Act of 1933, as amended,
Asyst duly certifies that it has reasonable grounds to believe that it meets
all of the requirements for filing on Form S-3 and has duly caused this
Registration Statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Fremont, County of Alameda, State of
California, on October 29, 1999.

                                          Asyst Technologies, Inc.

                                              /s/ Douglas J. McCutcheon
                                          By: _________________________________

                                                Douglas J. McCutcheon

                                              Senior Vice President and

                                               Chief Financial Officer

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

<TABLE>
<CAPTION>
             Signature                           Title                  Date
             ---------                           -----                  ----

<S>                                  <C>                           <C>
                 *                   Chairman of the Board, Chief    October 29,
____________________________________ Executive Officer and              1999
            Mihir Parikh             Director (Principal
                                     Executive Officer)

    /s/ Douglas J. McCutcheon        Senior Vice President and       October 29,
____________________________________ Chief Financial Officer            1999
       Douglas J. McCutcheon         (Principal Financial and
                                     Accounting Officer)

                 *                   Director                        October 29,
____________________________________                                    1999
          Walter W. Wilson

                                     Director
____________________________________
         Tsuyoshi Kawanishi

                 *                   Director                        October 29,
____________________________________                                    1999
           Stanley Grubel

                 *                   Director                        October 29,
____________________________________                                    1999
           Ashok K. Sinha

                                     Director
____________________________________
          Robert McNamara
    */s/ Douglas J. McCutcheon
____________________________________
       Douglas J. McCutcheon
          Attorney-in-Fact
</TABLE>

                                      II-5
<PAGE>

                                 EXHIBIT INDEX

<TABLE>
<CAPTION>
                                                                     Sequential
    Exhibit                                                             Page
    Number                     Document Description                    Number
    -------                    --------------------                  ----------
 <C>           <S>                                                   <C>
  1.1+         Underwriting Agreement.
  2.1(iv)      Stock Purchase Agreement among the Company, Hine
               Design Incorporated and the Shareholders of Hine
               Design Incorporated, dated July 2, 1998.
  2.2(vi)      Agreement and Plan of Merger and Reorganization
               among the Company, PSTI Merger Sub Acquisition
               Corp., Progressive System Technologies, Inc.,
               Advent International Investor II, Envirotech Fund I
               and Global Private Equity II, dated as of June 2,
               1999.
  2.3(xii)     Stock Purchase Agreement among the Company, Palo
               Alto Technologies, Inc. ("PAT"), the shareholders
               of PAT and the optionholders of PAT, dated August
               27, 1999.
  2.4          Agreement for Sale and Purchase of Common Stock
               between MECS Corporation and the Company, date
               September 27, 1999.
  3.1(i)       Amended and Restated Articles of Incorporation of
               the Company.
  3.2(xii)     Certificate of Amendment of the Amended and
               Restated Articles of Incorporation.
  3.3(i)       Bylaws of the Company.
  4.1(iii)     Common Stock Purchase Agreement, dated September
               25, 1997.
  4.2(v)       Rights Agreement among the Company and Bank of
               Boston, N. A., as Rights Agents, dated June 25,
               1995.
  4.3(vi)      Common Stock Purchase Agreement, dated as of May
               26, 1999.
  5.1          Opinion of Cooley Godward LLP.
 10.1(i)       Form of Indemnity Agreement entered into between
               the Company and its directors and officers.
 10.2(i)(x)    Company's 1993 Stock Option Plan and related form
               of stock option agreement.
 10.3(i)(x)    Company's 1993 Employee Stock Purchase Plan and
               related offering document.
 10.4(i)(x)    Company's 1993 Non-Employee Directors' Stock Option
               Plan and related offering document.
 10.5(i)       Hewlett-Packard SMIF License Agreement dated June
               6, 1984.
 10.6(viii)    Lease Agreement between the Company and the Kato
               Road Partners dated February 16, 1995.
 10.7(viii)    Sublease Agreement between the Company and the Kato
               Road Partners dated February 16, 1995.
 10.8(vii)     Asset Purchase Agreement between Palo Alto
               Technologies, Inc., the Company and Asyst
               Automation, Inc., dated September 30, 1997.
 10.9(ix)(x)   Loan Agreement A and Promissory Note Secured by
               Deed of Trust between the Company and Terry
               Moshier, all dated August 1, 1997.
 10.10(ix)(x)  Loan Agreement B, Promissory Note, and Loan Pledge
               Agreement between the Company and Terry Moshier,
               all dated August 1, 1997.
 10.11(x)(xiv) Secured Promissory Note between the Company and
               Dennis R. Riccio, dated November 16, 1998.
 10.12(x)(xiv) Secured Promissory Note between the Company and
               Dennis R. Riccio, dated February 1, 1999.
</TABLE>
<PAGE>

<TABLE>
<CAPTION>
                                                                     Sequential
                                                                        Page
 Exhibit Number                Document Description                    Number
 --------------                --------------------                  ----------
 <C>            <S>                                                  <C>
 10.13(xi)      Employment and Compensation Agreement between the
                Company and Mihir Parikh dated April 1, 1999.
 10.14(xii)     Lease Agreement between Aetna Life Insurance
                Company and Hine Design, Inc., dated August 4,
                1995.
 10.15(xii)     Industrial Space Lease Agreement between PEN
                Associates and the Company, dated November 13,
                1995, as amended.
 10.16(xii)     Lease Agreement between SL-6 Partners, Ltd. and
                Progressive System Technologies, Inc., dated
                November 20, 1995, as amended.
 10.17(xii)     Sublease Agreement between Progressive System
                Technologies, Inc. and Group, Inc., dated December
                3, 1996.
 10.18(xii)     Industrial Space Lease Agreement between PEN
                Associates and the Company, dated December 14,
                1997.
 10.19(xii)     Separation Agreement between the Company and
                William R. Leckonby, dated November 9, 1998.
 10.20(xii)     Amendment to Lease between Kato Road Partners and
                the Company, dated July 30, 1999.
 10.21(xii)     Cooperation Agreement between MECS Corporation and
                the Company, dated August 5, 1999.
 10.22(x)(xiii) Long-term Incentive Compensation Plan.
 21.1*          Subsidiaries of the Company.
 23.1           Consent of Arthur Andersen LLP.
 23.2           Consent of Ernst & Young LLP.
 23.3           Consent of Cooley Godward LLP is contained in
                Exhibit 5.1 to this registration statement.
 24.1*          Power of Attorney is contained on the signature
                pages to this registration statement.
</TABLE>
- --------
 +  To be filed by amendment.

 *  Previously filed.
(i) Incorporated by reference to the Company's Registration Statement on Form
    S-1 (No. 33-66184), as amended.
(ii) Incorporated by reference to the Company's Registration Statement on Form
     S-1 (No. 33-88246) as amneded.
(iii) Incorporated by reference to the Company's 8-K filed with the Securities
      Exchange Commission on October 10, 1997.
(iv) Incorporated by reference to the Company's 8-K filed with the Securities
     Exchange Commission on August 14, 1998.
(v) Incorporated by reference to the Company's 8-K filed with the Securities
    Exchange Commission on June 29, 1998.
(vi) Incorporated by reference to the Company's 8-K filed with the Securities
     Exchange Commission on June 18, 1999.
(vii) Incorporated by reference to the Company's 10-Q; quarter ended September
      30, 1997 (Confidential treatment granted).
(viii) Incorporated by reference to the Company's Annual Report on Form 10-K
       for the fiscal year ended March 31, 1995.
<PAGE>

(ix) Incorporated by reference to the Company's Annual Report on Form 10-K for
     the fiscal year ended March 31, 1998.
(x) Management contract/compensation plan, contract or arrangement.
(xi) Incorporated by reference to the Company's Form 10-Q for the quarter ended
     June 30, 1999.
(xii) Incorporated by reference to the Company's Form 10-Q for the quarter
      ended September 30, 1999.
(xiii) Incorporated by reference to the Company's DEF 14A filed with the SEC on
       July 29, 1998.
(xiv) Incorporated by reference to the Company's Annual Report on Form 10-K405
      for the fiscal year ended March 31, 1999.

<PAGE>

                                                                     Exhibit 2.4


                        AGREEMENT FOR SALE AND PURCHASE
                                OF COMMON STOCK

          This Agreement For Sale And Purchase Of Common Stock ("Agreement") is
made and entered into as of this 27/th/ day of September 1999, by and among MECS
Corporation, a kabushiki kaisha organized under the laws of Japan (the
"Company"), Mr. Kazuo Kimata (the "Selling Shareholder"), and Asyst
Technologies, Inc., a corporation organized under the laws of California
("Asyst").

                                   RECITALS

          Whereas, the Company develops, manufactures, installs, sells and
services certain robotics systems and related products; and

          Whereas, the Selling Shareholder owns individually, and controls
through his family members, 4,063,000 shares of the issued and outstanding
common stock of the Company (the "Selling Shareholder Shares");

          Whereas, Asyst desires to acquire all of the Selling Shareholder
Shares and up to 100% of the remaining shares of common stock of the Company
(the "Other Shares") through a series of transactions on the terms and
conditions set forth in this Agreement; and

          Whereas, as a condition to Asyst's acquisition of all of the Selling
Shareholder Shares and the Other Shares, the Company agrees to undertake certain
restructuring and other steps as set forth in this Agreement; and

          Whereas, the Selling Shareholder agrees to cause the Company to
undertake such restructuring and other steps;

          Now, Therefore, in consideration of the mutual covenants, agreements,
representations and warranties contained in this Agreement, the parties hereby
agree as follows:

                                   ARTICLE 1

                                  DEFINITIONS

     As used in this Agreement, the following terms shall have the following
meanings:

     1.1     Affiliate means a person or entity that directly, or indirectly,
             ---------
through one or more intermediaries, controls or is controlled by, or is under
common control with, the person or entity specified.  For purposes of this
Section 1.1, "control" shall be defined as (a) fifty percent,(50%) or more
common equity ownership, or (b) the ability to direct the management or policies
of a person or entity, whether by contract or otherwise.

     1.2   Asyst is defined in the introductory paragraph.
           -----

                                       1
<PAGE>

     1.3   Business Plan means the business plan, in the form attached as
           --------------
Schedule 1.3 hereto, as agreed to among the Company, Asyst and the Selling
Shareholder.

     1.4   Company is defined in the introductory paragraph.
           -------

     1.5   Company Intellectual Property Rights is defined in Section 3.15
           ------------------------------------
             below.


     1.6   Company Records means the Company's teikan, tokibo tohon and other
           ---------------
organizational documents and all amendments thereto, the board or directors
meeting regulations, all minutes of board of directors' or shareholders'
meetings and all other documents relating to its organization and maintenance.

     1.7   Core Subsidiaries means MECS Engineering Co., a kabushiki kaisha
           -----------------
organized and existing under the laws of Japan, MECS Material Inc., a kabushiki
kaisha organized and existing under the laws of Japan, MECS Robotech USA Inc., a
California corporation, and MECS Korea Inc., a corporation organized and
existing under the laws of The Republic of South Korea.

     1.8   Financial Statements is defined in Section 3.9 below.
           --------------------

     1.9   Fiscal Year means, for each of the Company, MECS Engineering Co.,
           -----------
and MECS Material Inc., the fiscal year commencing on April I of each calendar
year and ending on March 31 of the following calendar year, for MECS Robotech
USA Inc., the fiscal year commencing on January I and ending on December 31 of
such calendar year and for MECS Korea Inc., the fiscal year commencing on
January I each calendar year and ending on December 31 of such calendar year.

     1.10  Fixed Assets is defined in Section 3.14 below.
           ------------

     1.11  GAAP means generally accepted accounting principles.
           ----

     1.12  Hazardous Materials Law means any law, order, rule or regulation
           -----------------------
relating to pollution, worker safety, public safety, human health, natural
resources, the environment, or relating to the discharge, remediation, removal,
manufacture, processing, distribution, use, treatment, storage, disposal,
transport or handling of Hazardous Substances.

     1.13  Hazardous Substance means any substance, material, chemical or
           -------------------
waste, the presence of which requires investigation or remediation under, or
which is or becomes regulated by, any governmental authority, due to its
properties of being toxic, hazardous, explosive, corrosive, flammable,
infectious, radioactive, carcinogenic or mutagenic.

     1.14  Indemnified Parties is defined in Section 11.1(a) below.
           -------------------

     1.15  Intellectual Property Rights is defined in Section 3.15 below.
           ----------------------------

     1.16  Leases is defined in Section 3.12 below.
           ------

     1.17  Liabilities is defined in Section 3.21 below.
           -----------

                                       2
<PAGE>

     1.18  Licenses is defined in Section 3.17 below.
           --------

     1.19  Other Shares is defined in the third recital.
           ------------

     1.20  Material Contracts is defined in Section 3.19 below.
           ------------------

     1.21  Participating, Shareholder and Participating Shareholders are
           --------------------------     --------------------------
defined in Section 2.5 below.

     1.22  Phase One Closing means the consummation of the Phase One Purchase.
           -----------------

     1.23  Phase Two Closing means the consummation of the Phase Two Purchase.
           -----------------

     1.24  Phase Three Closing means the consummation of the Phase Three
           -------------------
Purchase.

     1.25  Phase One Purchase is defined in Section 2.1 (a) below.
           ------------------

     1.26  Phase Two Purchase is defined in Section 2.1 (b) below.
           ------------------

     1.27  Phase Three Purchase is defined in Section 2.1 (c) below.
           --------------------

     1.28  Premises means any real property and all improvements thereon which
           --------
are owned, operated or leased by the Company.

     1.29  Purchase Price means the amount calculated pursuant to Section 2.3
           --------------
below.

     1.30  Schedules means all schedules and exhibits to this Agreement.
           ---------

     1.31  Shares means the Selling Shareholder Shares and the Other Shares.

     1.32  System is defined in Section 3.16 below.
           ------

     1.33  Tax Returns and Statements is defined in Section 3.7 below.
           --------------------------

     1.34  Year 2000 Compliant is defined in Section 3.16 below.
           -------------------

                                   ARTICLE 2

                        PURCHASE AND SALE OF THE SHARES

     2.1  Purchase and Sale of the Shares.  Upon the terms and subject to the
          -------------------------------
conditions set forth in this Agreement, Asyst agrees to purchase the Selling
Shareholder Shares from the Selling Shareholder and all of the Other Shares from
those other shareholders of the Company that elect to sell Other Shares (each a
"Participating Shareholder" and collectively "Participating Shareholders").  The
Selling Shareholder agrees to sell, assign, transfer and convey to Asyst the
Selling Shareholder Shares and to use his best efforts to convince each of the
other shareholders of the Company to sell, assign, transfer and convey the Other
Shares to Asyst and become Participating Shareholders.  The purchase and sale of
the Shares shall be effected in three phases as follows:

                                       3
<PAGE>

          (a) upon the completion, to Asyst's satisfaction, of the conditions
set forth in Sections 7.1, 7.3 and 7.4 below, or upon Asyst's election made at
its sole discretion prior to that time, Asyst shall acquire up to 10% of the
Shares, all of which shall be acquired from the Selling Shareholder Shares (the
"Phase One Purchase");

          (b) upon the completion, to Asyst's satisfaction, of the conditions
set forth in Sections 7.2, 7.3 and 7.4 below, or upon Asyst's election made at
its sole discretion prior to that time, Asyst shall acquire additional Shares,
such that immediately following such acquisition Asyst shall own not less than
66.7% of the Shares (the "Phase Two Purchase"); and

          (c) within 12 months following the consummation of the Phase Two
Closing, subject to the conditions set forth in Section 7.4 below, Asyst shall
acquire any then remaining Selling Shareholder Shares and any Other Shares then
offered by the Participating Shareholders (the "Phase Three Purchase").

     The Shares to be acquired by Asyst in each of the Phase Two Purchase and
the Phase Three Purchase shall, to the extent reasonably possible and except as
contemplated in Section 2.2, be acquired from the Selling Shareholder and from
the Participating Shareholders on a pro rata basis.  Without limiting any other
provision of this Agreement, Asyst may elect, in its sole discretion, to permit
certain parties, including, but not limited to, the Company's management,
employees and lenders, to acquire or retain such portion of the Shares as Asyst
deems appropriate in the Phase Two Purchase or the Phase Three Purchase.  In no
event, however, shall Asyst be obligated to permit any party to acquire or
retain any of the Shares.

     2.2  Solicitation of Other Shares.  Asyst and the Selling Shareholder shall
          ----------------------------
cooperate in determining the appropriate means to solicit the other shareholders
of the Company to become Participating Shareholders and sell the Other Shares in
the Phase Two Purchase and the Phase Three Purchase.  If any one or more of the
other shareholders of the Company refuses to sell its relevant portion of the
Other Shares as contemplated hereunder, the Selling Shareholder shall, upon
request by Asyst, meet with such refusing shareholders and attempt to convince
such refusing shareholders to become Participating Shareholders and sell their
relevant Other Shares to Asyst.  If such refusing shareholders nevertheless
refuse to sell their relevant Other Shares, Asyst shall have the right, in its
discretion, to allow the refusing shareholders to retain their Shares, or take
such other steps as Asyst may deem necessary or advisable in relation to the
refusing shareholders.  In no event shall the presence of any such refusing
shareholders relieve the Selling Shareholder of his obligation to sell the
Selling Shareholder Shares.  Without limiting the foregoing, if the refusal of
any other shareholder to sell its pro rata portion of the Other Shares will
result in Asyst not being able to achieve the percentage threshold for the Phase
Two Purchase, at the option of Asyst exercised at any time prior to the Phase
Two Closing, the Selling Shareholder shall sell at the Phase Two Closing (on the
terms and conditions provided herein) such additional Selling Shareholder Shares
as may be necessary to allow Asyst to meet such percentage threshold.

     2.3  The Purchase Price.  The Purchase Price for the Selling Shareholder
          ------------------
Shares shall be (Yen)300 per share, whether purchased in the Phase One Purchase,
the Phase Two Purchase or the Phase Three Purchase.

                                       4
<PAGE>

     2.4  Payment to Selling Shareholder.  The Purchase Price for the Selling
          ------------------------------
Shareholder Shares, whether purchased in the Phase One Purchase, the Phase Two
Purchase or the Phase Three Purchase, shall be paid in full by wire transfer in
immediately available yen funds to a single account at The Tokai Bank, Ltd.,
Bizai Branch, Account no. 814823 for the benefit of the Selling Shareholder.
Such payment shall constitute full performance of Asyst's obligation to pay the
Purchase Price in relation to the Selling Shareholder Shares then purchased, and
the Selling Shareholder shall be solely responsible for distribution of the
Purchase Price to his family members.

     2.5  Payment for Other Shares.  If any Participating Shareholder agrees to
          ------------------------
sell all or some portion of its Other Shares to Asyst, Asyst and such
Participating Shareholder shall agree upon the purchase price and method of
payment for the Other Shares sold by such Participating Shareholder.

     2.6  Sales and Transfer Taxes.  All applicable stamp, sales, transfer or
          ------------------------
other taxes or duties (other than taxes on or measured by the net income of
Asyst) that may be due or payable in Japan as a result of the purchase and sale
of the Selling Shareholder Shares shall be borne by the Selling Shareholder,
without regard to the party against which such taxes may be assessed.
Notwithstanding the foregoing, the Selling Shareholder may elect, at his
expense, to contest the validity or amount of such taxes, provided, however,
                                                          -----------------
that, as a condition to his election to contest such taxes, the Selling
Shareholder shall provide such assurances and undertakings as may be necessary
or appropriate to ensure that neither Asyst nor the Company, nor any of their
respective assets or properties, becomes liable for or subject to any penalty,
fine, lien or other assessment as a result of such contest.

                                   ARTICLE 3

                       REPRESENTATIONS AND WARRANTIES OF
                    THE SELLING SHAREHOLDER AND THE COMPANY

     As a material inducement to Asyst to enter into this Agreement and to
purchase the Shares, the Selling Shareholder and the Company, after due inquiry
and investigation, make the representations and warranties set forth in this
Article 3.  For the avoidance of doubt, such representations and warranties
shall be deemed to be repeated on each of the date of this Agreement, the date
of the Phase One Closing and the date of the Phase Two Closing.

     3.1  Corporate Organization.  The Company is a kabushiki kaisha duly
          ----------------------
organized and validly existing under the laws of Japan.  Each of the Core
Subsidiaries is a corporation duly organized, validly existing and in good
standing under the laws of its state or country of formation.  Except as set
forth on Schedule 3.1, the Company and each of the Core Subsidiaries is
         ------------
qualified to do business as a foreign corporation in each state or country where
so required in connection with their respective business, operations, properties
or assets, and the failure of any of the Company or the Core Subsidiaries to be
so qualified in any jurisdiction does not give rise to any material adverse
effect on any of their respective business, operations, properties or assets.
Each of the Company and the Core Subsidiaries has all necessary corporate power
and authority required in connection with its present and contemplated business,
operations, properties and assets.

                                       5
<PAGE>

     3.2  No Other Subsidiaries.  Except as set forth on Schedule 3.2, neither
          ---------------------                          ------------
the Company nor any of the Core Subsidiaries, directly or indirectly, owns or
controls any interest or investment (whether equity or debt) in any corporation,
company, joint venture, business organization, trust or other entity.

     3.3  Capital Structure.  Schedule 3.3 sets forth:
          -----------------   ------------

          (a) the names of the shareholders of the Company and of each of the
Core Subsidiaries,

          (b) their respective percentage shareholding in the Company or in the
Core Subsidiaries, as the case may be,

          (c) the names of each holder of notes, warrants, options or other
instruments convertible into common stock or any other equity interest of the
Company or of any of the Core Subsidiaries,

          (d) the numbers of shares of common stock or other equity interests
covered by such notes, warrants, options or other instruments for each such
holder and the exercise or conversion price thereof, and

          (e) the capitalization, including authorized capital and total issued
and outstanding capital, for each of the Core Subsidiaries.

     Except for the rights conferred to Asyst hereunder and except as set forth
of Schedule 3.3, there are no options, agreements, arrangements, commitments,
   ------------
understandings or other rights pursuant to which any third party has the right
or ability to acquire any interest in the Company or in any of the Core
Subsidiaries.  The authorized capital of the Company is 21,081,600 shares of
common stock of par value (Yen)50 each, of which 5,270,400 shares are issued and
outstanding, and the paid-in capital of the Company is (Yen)928,700,000.  Except
as set forth above, there are no notes, warrants, options or other instruments
convertible into, or any other rights to acquire, any shares of common stock of
or other ownership interest in the Company or in any of the Core Subsidiaries or
any agreement otherwise relating to the issued or unissued common stock or other
ownership interest in the Company or in any of the Core Subsidiaries.  The
Company is not subject to any obligation (contingent or otherwise) to repurchase
or otherwise acquire or retire any Shares.  The Shares are duly and validly
issued, fully paid and nonassessable, and have been issued in compliance with
all relevant laws.

     3.4  Title to Selling Shareholder Shares.  The Selling Shareholder Shares,
          -----------------------------------
when acquired by Asyst, shall be free and clear of any liens, encumbrances,
security interests, restrictions or claims whatsoever.

     3.5  Authorization and Approvals.  This Agreement is the legal, valid and
          ---------------------------
binding obligation of the Selling Shareholder and the Company, enforceable in
accordance with its terms, subject to judicial discretion regarding specific
performance or other equitable remedies, and except as may be limited by
bankruptcy, reorganization, insolvency, moratorium or other laws relating to or
affecting the enforcement of creditors' rights and remedies generally.  This
Agreement has been duly and validly authorized by the Selling Shareholder and
the Company,

                                       6
<PAGE>

including all actions reasonably necessary to permit the Selling Shareholder to
sell the Selling Shareholder Shares held by his family and all necessary
corporate action by the Company. No approvals or consents by, or filing with,
any court, governmental or administrative body, agency or any other third party
is required in connection with the execution and delivery by the Selling
Shareholder or the Company of this Agreement or the consummation by the Selling
Shareholder and the Company of the transactions contemplated hereby.

     3.6  No Violations.  Neither the execution and delivery of this Agreement,
          -------------
nor the consummation of the transactions contemplated hereby will:

          (a) violate any provision of the charter or organizational documents
of the Company;

          (b) violate, or be in conflict with, or constitute a default (or an
event which, with the giving of notice or lapse of time or both, would
constitute a default), or, except as set forth on Schedule 3.6, give rise to any
right of termination, cancellation or acceleration under any of the terms,
conditions or provisions of Material Contract to which the Selling Shareholder,
the Company or any of the Core Subsidiaries is a party or by which the Selling
Shareholder, the Company, any of the Core Subsidiaries or any of their
respective properties or assets may be bound, which would result in a material
adverse effect on the business, operations, prospects, properties or assets of
the Company or any of the Core Subsidiaries; or

          (c) violate any law or statute or any order, writ or injunction of any
court or governmental authority applicable to the Selling Shareholder, the
Company, any of the Core Subsidiaries, or any of their respective properties or
assets, which would result in a material adverse effect on the business,
operations, prospects, properties or assets of the Company or any of the Core
Subsidiaries.

     3.7  Tax Returns.
          -----------

     The Company and each of the Core Subsidiaries has:

          (a) timely filed all national, regional and foreign franchise, income,
consumption, sales, gross receipts and all other tax returns and statements
which are required to be filed and which were due prior to the date hereof ("Tax
Returns and Statements"); and

          (b) paid within the time and in the manner prescribed by law or
established reasonable reserves as reflected on the Financial Statements for the
payment of all taxes, levies, assessments and other governmental charges accrued
or payable by the Company or by any of the Core Subsidiaries, and any fees,
penalties or interest thereon, for all periods ending on or prior to the date
hereof. The Tax Returns and Statements are complete and accurate in all material
respects, and no tax assessment or deficiency which has not been paid or for
which an adequate reserve has not been set aside, has been made or, to the best
knowledge of the Selling Shareholder and the Company, threatened against the
Company or any of the Core Subsidiaries, nor are any of the Tax Returns and
Statements now being or, to the best knowledge of the Selling Shareholder and
the Company, threatened to be examined or audited, and no consents waiving or
extending any applicable statute of limitations for the Tax Returns and
Statements, or any taxes required to be paid thereunder, have been filed.

                                       7
<PAGE>

     3.8  Transactions with Affiliates.  Schedule 3.8 attached hereto lists and
          ----------------------------
generally describes the terms of all agreements, loans, services or other
arrangements among or between the Company, any of the Core Subsidiaries and the
Selling Shareholder.  Except as set forth on Schedule 3.8, there are no
agreements, loans, services or other arrangements among or between the Company,
any of the Core Subsidiaries and the Selling Shareholder, and none are
contemplated.

     3.9  Financial Statements.  True and complete copies of the financial
          --------------------
statements of the Company and each of the Core Subsidiaries as of and for their
respective 1996 through 1999 Fiscal Years (including, without limitation, the
related balance sheets, statements of financial condition, statements of
operations, statements of changes in shareholders' equity and profit and loss
statements of the Company and all notes, schedules and exhibits thereto), having
been compiled by Deloitte Touche Tohmatsu (collectively, "Financial
Statements"), have been delivered to Asyst prior to the date hereof, and no
changes have been made thereto since the date of delivery.  The Financial
Statements:

          (a) present fairly and accurately the financial position of the
Company or the relevant Core Subsidiary as of the end of such periods and the
results of operations and changes in financial position of the Company or the
relevant Core Subsidiary for the periods then ended;

          (b) were prepared in accordance with GAAP consistently applied in the
relevant jurisdiction; and

          (c) reflect that the Company or the relevant Core Subsidiary has set
aside adequate reserves for all taxes, national, regional, foreign or otherwise,
with respect to the period then ended and all prior periods.

     3.10 Title to Properties.  The Company and each of the Core Subsidiaries
          -------------------
has good, valid and marketable title to all of the properties and assets
(personal and mixed, tangible and intangible) which it purports to own,
including, without limitation, all the properties and assets listed on Schedules
                                                                       ---------
3.11, 3.12, 3.14 and 3.17 attached hereto, except as specifically noted in such
- -------------------------
Schedules.  All such properties and assets of the Company and each of the Core
Subsidiaries are free and clear of all title defects, liens, claims, charges,
security interests or other encumbrances of any kind or nature except for the
following, the nature and details of which have been previously fully disclosed
to Asyst and approved in writing by Asyst:

          (a) minor imperfections of title, none of which materially detract
from the value, or materially impair the use, of the property or assets subject
thereto or materially impair the business, operations or prospects of the
Company or the relevant Core Subsidiary;

          (b) liens for taxes not yet due; and

          (c) liens set forth on Schedule 3.10.

     3.11 Real Property.  Schedule 3.11 attached hereto contains a complete,
          -------------
current and correct list of all real property owned by the Company or any of the
Core Subsidiaries.  Except as set forth on Schedule 3.11, there are no
violations of law or other rights affecting such real property or the use
thereof by the Company or any of the Core Subsidiaries.

                                       8
<PAGE>

     3.12 Leases.  Schedule 3.12 attached hereto contains a complete, current
          ------
and correct list of all leases pursuant to which the Company or any of the Core
Subsidiaries leases real or personal property that is material to the business,
operations or prospects of the Company or any of the Core Subsidiaries
("Leases").  Each of the Leases is valid, binding and enforceable in accordance
with its terms, there are no existing material defaults thereunder and no event
has occurred which would constitute a default (or any event which, with the
giving of notice or lapse of time or both, would constitute a default)
thereunder.

     3.13 Zoning.  The Company and each of the Core Subsidiaries presently is in
          ------
compliance with all laws, statutes, ordinances, rules, regulations and orders
relating to zoning and land use restrictions which are applicable to any portion
of their respective business or operations, other than events of non-compliance
which would not individually or in the aggregate have a material adverse effect
on the Company or any of the Core Subsidiaries.

     3.14 Fixed Assets.  Schedule 3.14 attached hereto contains a complete,
          ------------
current and correct list of all material plants, buildings, fixtures,
structures, furniture and equipment owned or used, or contemplated to be owned,
leased or used, by the Company or any of the Core Subsidiaries ("Fixed Assets"),
and except as set forth on Schedule 3.14, there are no other material Fixed
Assets required in connection with business and operations of the Company or any
of the Core Subsidiaries.  All of the Fixed Assets are in good operating
condition and repair, normal wear and tear excepted, free from defects other
than minor defects that do not interfere with the use or value of the Fixed
Assets.

     3.15 Intellectual Property.  The term "Intellectual Property Rights" means:
          ---------------------

          (a) all inventions (whether patentable or unpatentable and whether or
not reduced to practice), all improvements thereon, and all patents, patent
applications and patent disclosures, together with all reissuances,
continuations, continuations-in-part, revisions, extensions and reexaminations
thereof;

          (b) all trademarks, service marks, trade dress, logos, trade names,
domain names and corporate names, together with all translations, adaptations,
derivations, and combinations thereof and including all goodwill associated
therewith, and all applications, registrations and renewals in connection
therewith;

          (c) all copyrightable works, all copyrights, and all applications,
registrations and renewals in connection therewith;

          (d) all mask works and all applications, registrations and renewals in
connection therewith;

          (e) all trade secrets and confidential business information (including
ideas, research and development, know-how, formulas, compositions, manufacturing
and production processes and techniques, technical data, designs, drawings,
specifications, customer and supplier lists, pricing and cost information and
business and marketing plans and proposals);

          (f) all computer software (including data and related documentation);

                                       9
<PAGE>

          (g) all other proprietary rights; and

          (h) all copies and tangible embodiments of any of the foregoing (in
whatever form or medium).

     Except as set forth on Schedule 3.15, the Company and the Core Subsidiaries
                            -------------
either are the sole and exclusive owners of, with all right, title and interest
in and to (free and clear of any encumbrances), all Intellectual Property Rights
used in or necessary to the conduct of the business and operations of the
Company or any of the Core Subsidiaries as currently conducted or as currently
contemplated to be conducted (the "Company Intellectual Property Rights"), or
have sole and exclusive perpetual rights to the use of all Company Intellectual
Property Rights (and are not contractually obligated to pay any compensation or
grant any rights to any third party in respect thereof), or have the right to
require the applicant of any Intellectual Property Rights which constitutes an
application for registration, including, but not limited to, all patent
applications, trademark applications, service mark applications, copyright
applications, or mask work applications, to transfer ownership to the Company or
the relevant Core Subsidiary of the application and of the registration once it
issues.  All Company Intellectual Property Rights which are registrations,
including, but not limited to, all registered patents, trademarks, service marks
and copyrights, are valid and in full force and effect.  No claims have been
asserted or, to the best of the Selling Shareholder's and the Company's
knowledge, are threatened by any person, nor, to the best of the Selling
Shareholder's and the Company's knowledge, is there any basis for any bona fide
claims, to the effect that the manufacture, sale, licensing or use of any
product as now used, manufactured, sold or licensed or proposed for use,
manufacture, sale or license by the Company or any of the Core Subsidiaries
infringes on, interferes with, misappropriates or otherwise comes in conflict
with, any Intellectual Property Rights of others, against the use by the Company
or any of the Core Subsidiaries of any Intellectual Property Rights, or
challenging the ownership, legality, use, validity, enforceability or
effectiveness of any of the Intellectual Property Rights used in the business
and operations of the Company or any of the Core Subsidiaries as currently
conducted or as proposed to be conducted.  To the best of the Selling
Shareholder's and the Company's knowledge, there is no unauthorized use,
infringement or misappropriation of, or conflict with, any of the Company
Intellectual Property Rights by any third party, including any employee or
former employee of the Company or of any of the Core Subsidiaries.  The conduct
of the business and the operations of the Company and each of the Core
Subsidiaries as currently conducted and as currently proposed to be conducted
does not and will not infringe on, interfere with, misappropriate or otherwise
come into conflict with any Intellectual Property Right of any other person.
Except as set forth on Schedule 3.15, neither the Company nor any of the Core
Subsidiaries has granted any licenses of Company Intellectual Property Rights to
any person.  The execution, delivery and performance by the Company of this
Agreement and the consummation of the transactions contemplated hereby will not
alter or impair or result in the loss of any rights or interests of the Company
or any of the Core Subsidiaries in any Intellectual Property Right.  None of the
Company Intellectual Property Rights are subject to any outstanding order or
agreement restricting in any manner the use thereof by the Company or any of the
Core Subsidiaries.  The Company and the Core Subsidiaries have taken all
necessary and desirable action to maintain and protect each Company Intellectual
Property Right.  Except as set forth on Schedule 3.15, neither the Company nor
any of the Core Subsidiaries has entered into any agreement to indemnify any
other person against

                                       10
<PAGE>

any charge of infringement or misappropriation of, or interference or conflict
with, any of the Company Intellectual Property Rights.

     3.16 Year 2000 Compliance.  The Company and each of the Core Subsidiaries
          --------------------
has taken commercially reasonable steps to assess and ensure that each system of
the Company and of each of the Core Subsidiaries, including, without limitation,
software, hardware, databases or embedded control systems, that constitutes any
part of, or is used in connection with the use, operation or enjoyment of, any
tangible or intangible assets or property of the Company or any of the Core
Subsidiaries, whether used by the Company or any of the Core Subsidiaries
individually or forming part of the products or services sold or furnished to
others (collectively, a "System"):

          (a) has been modified to be used from and after January 1, 2000;

          (b) will operate without material error arising from the creation,
recognition, acceptance, calculation, display, storage, retrieval, accessing,
comparison, sorting, manipulation, processing or other use of dates or date-
based, date-dependent or date-related data, including but not limited to century
recognition, day-of-the-week recognition, leap years, date values and interfaces
of data functionalities; and

          (c) will not be materially adversely affected by the advent of the
year 2000, the advent of the twenty-first century or the transition from the
twentieth century through the year 2000 and into the twenty-first century
(collectively, items (a) through (c) are referred to herein as "Year 2000
Compliant").

     Except as set forth on Schedule 3.16, neither the Company nor any of the
                            -------------
Core Subsidiaries has received notice, or otherwise based on third party
information available to the Company or any of the Core Subsidiaries has any
reason to believe, that any System receives data from or communicates with any
component or system external to itself (whether or not such component or system
belongs to, or was made or developed by, the Company or any of the Core
Subsidiaries) that is not itself Year 2000 Compliant.

     3.17 Licenses and Permits.  Schedule 3.17 attached hereto contains a
          --------------------
complete, current and correct list of all licenses, permits, franchises, rights
and privileges required for the business and operations of the Company and each
of the Core Subsidiaries ("Licenses").  The Company and each of the Core
Subsidiaries possess all Licenses necessary for the present conduct of its
respective business and operations, including, without limitation, any and all
Licenses issued by any governmental or administrative agency or body.  Each of
the Licenses is in full force and effect, and there are no pending or, to the
best knowledge of the Selling Shareholder and the Company, threatened claims or
proceedings challenging the validity of or seeking to revoke, discontinue or
materially and adversely modify, any of the Licenses.  None of the transactions
contemplated by this Agreement nor any of prior acts or omissions of any of the
Company or the Core Subsidiaries affects the validity of or gives rise to any
basis upon which to revoke, discontinue or materially and adversely modify any
of the Licenses.

     3.18 Insurance.  Schedule 3.18 attached hereto contains a complete, current
          ---------   -------------
and correct description of all existing policies of fire, liability, worker's
compensation and all other forms of

                                       11
<PAGE>

insurance maintained by, or otherwise applicable to, the Company and the Core
Subsidiaries. All such policies are in full force and effect, all premiums with
respect thereto covering all periods up to and including the date hereof have
been paid, have not been assigned or pledged, are unencumbered, and no notice of
cancellation, termination or denial of coverage has been received with respect
to any such policy. Such policies:

          (a) comply with all requirements of law and of all agreements or
instruments to which the Company or any of the Core Subsidiaries is a party, or
pursuant to which any of their respective properties or assets may be subject;

          (b) are valid, outstanding and enforceable policies;

          (c) provide commercially reasonable insurance coverage for the
properties, assets, business and operations of the Company and of each of the
Core Subsidiaries as presently conducted and as contemplated, relative to
similarly situated companies conducting similar operations in the relevant
jurisdictions; and

          (d) will remain in full force and effect through the respective dates
set forth on Schedule 3.18 without the payment of additional premiums.
             -------------

     Except as set forth on Schedule 3.18, since January 1, 1994, neither the
Company nor any of the Core Subsidiaries has asserted any claims under such
insurance policies, and neither the Selling Shareholders nor the Company is
aware of any event, condition or other occurrence which could reasonably be
expected to give rise to any claim thereunder.  Except as set forth on Schedule
                                                                       --------
3.18, neither the Company nor any of the Core Subsidiaries has been refused any
- ----
insurance with respect to their respective properties, assets, business or
operations, nor has their respective coverage been limited by any insurance
carrier to which they have applied for or from which they have obtained any such
insurance.

     3.19 Compliance with Material Contracts.  Schedule 3.19 attached hereto
          ----------------------------------   -------------
contains a complete, current and correct list of all material contracts,
commitments, obligations or agreements of the Company and each of the Core
Subsidiaries, whether written or oral, including, without limitation, all
licenses, sublicenses or other agreements relating to the Company Intellectual
Property Rights (collectively, "Material Contracts").  All of the Material
Contracts are unencumbered, have not been assigned or pledged by the Company or
any of the Core Subsidiaries, and no event has occurred which would constitute a
default (or any event which, with the giving of notice or lapse of time or both,
would constitute a default) by the Company or any of the Core Subsidiaries under
any term or provision of any of the Material Contracts, and to the best
knowledge of the Selling Shareholder and the Company no event has occurred which
would constitute a default (or any event which, with the giving of notice or
lapse of time or both, would constitute a default) by any other parties to any
of the Material Contracts.  Each of the Material Contracts is in full force and
effect, is the legal, valid and binding obligation of the Company or the
relevant Core Subsidiary parties thereto, and to the best knowledge of the
Selling Shareholder and the Company, is the legal, valid and binding obligation
of the other parties to each of the Material Contracts, and is enforceable in
accordance with its terms, subject to judicial discretion regarding specific
performance or other equitable

                                       12
<PAGE>

remedies, and except as may be limited by bankruptcy, reorganization,
insolvency, moratorium or other laws relating to or affecting the enforcement of
creditors' rights and remedies generally.

     3.20 Compliance with Laws.  The business and operations of the Company and
          --------------------
each of the Core Subsidiaries have been conducted in compliance with all
applicable laws, statutes, ordinances, rules, regulations, orders and other
requirements of all governmental authorities and agencies to which they are
subject, including, without limitation, all such laws, regulations, ordinances
and requirements relating to environmental, antitrust, consumer protection,
labor and employment, zoning and land use, immigration, health, occupational
safety, pension and securities matters, except for violations that individually,
or in the aggregate, will have no material adverse effect on the business,
operations, prospects, assets, properties or financial condition of the Company
or any of the Core Subsidiaries.  Neither the Selling Shareholder nor the
Company has received any notification of any asserted present or past failure by
the Company or any of the Core Subsidiaries to comply with such laws, statutes,
ordinances, rules, regulations, orders or other requirements.

     3.21 No Undisclosed Liabilities.  Schedule 3.21 attached hereto contains a
          --------------------------   -------------
complete, current and correct list of all obligations, debts and liabilities of
the Company and each of the Core Subsidiaries, whether contractual or non-
contractual, accrued or unaccrued, contingent or absolute, direct or indirect,
recorded or unrecorded, potential or realized which are not reflected on the
Financial Statements (collectively, "Liabilities") as of August 31, 1999.
Neither the Company nor any of the Core Subsidiaries has incurred any
Liabilities since August 31, 1999, except for Liabilities which would not, in
the aggregate, have a material adverse effect upon the business, operations,
prospects, assets, properties or financial condition of the Company or any of
the Core Subsidiaries.

     3.22 Litigation.  Except as set forth in Schedule 3.22 attached hereto:
          ----------                          -------------

          (a) There is no pending or, to the best knowledge of the Selling
Shareholder and the Company, threatened action, suit, arbitration proceeding,
investigation or inquiry before any court or governmental or administrative body
or agency, or any private arbitration tribunal, against, relating to or
affecting the Company or any of the Core Subsidiaries, or any director, officer,
agent or employee of the Company or any of the Core Subsidiaries in his or her
capacity as such, or the assets, properties, prospects, business or operations
of the Company or any of the Core Subsidiaries, or the transactions contemplated
by this Agreement, nor is the Selling Shareholder or the Company aware of any
facts or circumstances which could reasonably lead to or provide the basis for
any such threatened action, suit, arbitration proceeding, investigation or
inquiry;

          (b) There is no order, judgment or decree of any court or governmental
or administrative body or agency enjoining or otherwise limiting the Company or
any of the Core Subsidiaries, or any officer, director, employee or agent of the
Company or any of the Core Subsidiaries, from conducting or engaging in any
aspect of the business or operations of the Company or any of the Core
Subsidiaries, or requiring the Company or any of the Core Subsidiaries, or any
officer, director, employee or agent of the Company or any of the Core
Subsidiaries, to take certain action which could reasonably be anticipated to
have a material



                                       13
<PAGE>

adverse effect on the business, operations, prospects, assets, properties or
financial condition of the Company or any of the Core Subsidiaries; and

          (c) Neither the Company nor any of the Core Subsidiaries is in
violation of or in default under any order, judgment, writ, injunction or decree
of any court or governmental or administrative body or agency, the effect of
which violation or default could reasonably be anticipated to have a material

adverse effect on the business, operations, prospects, assets, properties or
financial condition of the Company or any of the Core Subsidiaries.

     3.23 Environmental Compliance.  Except as disclosed in Schedule 3.23
          ------------------------                          -------------
attached hereto:

          (a) The Company and each of the Core Subsidiaries has obtained, and is
in substantial compliance with, all Licenses which are required under any
Hazardous Materials Laws for the business and operations of the Company and each
of the Core Subsidiaries;

          (b) Neither the Selling Shareholder nor the Company is aware of any
past or present events, settlements, consent decrees, conditions, practices or
incidents which may adversely affect, interfere with or prevent the continued
substantial compliance with Hazardous Materials Laws by the Company or any of
the Core Subsidiaries;

          (c) Neither the Selling Shareholder nor the Company has discovered or
caused, and to the best knowledge of the Selling Shareholder and the Company, no
other person has discovered or caused, any discharge, emission, disposal or
release of Hazardous Substances, or any occurrence or condition on or in the
vicinity of the premises of the Company or any of the Core Subsidiaries, which
could make those premises subject to restrictions on the ownership, occupancy,
transferability or use, or otherwise subject the Company or any of the Core
Subsidiaries to any liabilities, under any Hazardous Materials Laws;

          (d) Neither the Selling Shareholders, the Company nor any of the Core
Subsidiaries has manufactured, stored or disposed of Hazardous Substances at any
location which was not in compliance with Hazardous Materials Laws;

          (e) No underground storage tanks or surface impoundments are now, or
to the best knowledge of the Selling Shareholder or the Company, ever have been,
located on the premises of the Company or any of the Core Subsidiaries; and

         (f) No lien in favor of any governmental authority for liability under
or resulting from Hazardous Materials Laws, or damages arising from, or costs
incurred by such governmental authority in response to, a release of Hazardous
Substances, has ever been filed against the Company or any of the Core
Subsidiaries.

     3.24 Employment Matters.  Schedule 3.24 attached hereto contains a
          ------------------   -------------
complete, current and correct list of all employees of the Company and each of
the Core Subsidiaries and includes the job position and compensation payable
(including bonuses and perquisites) for each employee.  Except to the extent set
forth in Schedule 3.24 attached hereto:



                                       14
<PAGE>

          (a) The Company and each of the Core Subsidiaries are in substantial
compliance with all laws, statutes, ordinances, rules, regulations, orders and
other requirements relating to the employment of their respective employees,
including, without limitation, all provisions thereof relating to wages, hours,
safety, working conditions, overtime, collective bargaining and the payment of
social security and similar taxes;

          (b) There are no charges, complaints, allegations, applications or
other processes or claims pending or, to the best knowledge of the Selling
Shareholder and the Company, threatened against the Company or any of the Core
Subsidiaries before any governmental or administrative agency or other entity
relating in any way to any of the employees; and

          (c) None of the Company, any of the Core Subsidiaries or any of their
respective employees is a party or subject to any collective bargaining
agreement and there is no labor dispute, strike, slowdown, work stoppage, union
organizing campaign or other job action pending or, to the best knowledge of the
Selling Shareholder or the Company, threatened against the Company or any of the
Core Subsidiaries.

  3.25    Brokers and Finders.  Except for accountants and attorneys acting as
          -------------------
such (and not as brokers, finders or in other like capacity), all negotiations
on behalf of the Selling Shareholder and the Company relating to this Agreement
and the transactions contemplated hereby have been carried on directly by the
Selling Shareholder and the Company with Asyst without the intervention of any
broker, finder, investment banker or other third party representing the Selling
Shareholder or the Company.  Neither the Selling Shareholder nor the Company has
engaged or authorized any broker, finder, investment banker or other third party
to act on its or their behalf, directly or indirectly, as a broker, finder,
investment banker or in any other like capacity in connection with this
Agreement or the transactions contemplated hereby, or has consented to or
acquiesced in anyone so acting, and neither the Selling Shareholder nor the
Company is aware of any claim for compensation from any such broker, finder,
investment banker or other third party for so acting or of any basis for such a
claim.

  3.26    Accuracy of Representations and Warranties.  No representation or
          ------------------------------------------
warranty made in this Agreement by or on behalf of the Selling Shareholder or
the Company to Asyst contains any untrue statement of a material fact or omits
to state a material fact necessary in order to make the statements so made, in
light of the circumstances under which they are made, not misleading.

                                   ARTICLE 4

                    REPRESENTATIONS AND WARRANTIES OF ASYST

     As a material inducement to the Selling Shareholder and the Company to
enter into this Agreement and to sell the Selling Shareholder Shares, Asyst,
after due inquiry and investigation, makes the representations and warranties
set forth in this Article 4 to each of the Selling Shareholder and the Company.

                                       15
<PAGE>

     4.1  Organization of Asyst.  Asyst is a corporation duly organized and
          --------------------
validly existing under the laws of California.

     4.2  Authorization and Approvals.  This Agreement is the legal, valid and
          ---------------------------
binding obligation of Asyst, enforceable in accordance with its terms, subject
to judicial discretion regarding specific performance or other equitable
remedies, and except as may be limited by bankruptcy, reorganization,
insolvency, moratorium or other laws relating to or affecting the enforcement of
creditors' rights and remedies generally.  This Agreement has been duly and
validly authorized by all necessary corporate action of Asyst, and, except for
the kabushiki mochibun no shutoku ni kansuru houkokusho to be filed by Asyst
following the acquisition of the Selling Shareholder Shares and the Other
Shares, no approvals or consents by, or filing with, any court or governmental
or administrative body or agency is required in connection with the execution
and delivery by Asyst of this Agreement, or the consummation by Asyst of the
transactions contemplated hereby.

     4.3  No Violations.  Neither the execution and delivery of this Agreement,
          -------------
nor the consummation of the transactions contemplated hereby, will:

          (a) violate any provision of the applicable constitutional documents
of Asyst;

          (b) violate, or be in conflict with, or constitute a default (or any
event which, with the giving of notice or lapse of time or both, would
constitute a default) under any material agreement or instrument to which Asyst
is a party or by which Asyst is bound; or

          (c) violate any law or statute or any order, writ or injunction of any
court or governmental authority applicable to Asyst.

     4.4  Brokers and Finders.  Except for Deutsche Securities Limited and
          -------------------
except for accountants and attorneys acting as such (and not as brokers, finders
or in other like capacity), all negotiations on behalf of Asyst relating to this
Agreement and the transactions contemplated hereby have been carried on directly
by Asyst with the Selling Shareholder and the Company without the intervention
of any broker, finder, investment banker or other third party representing
Asyst.  Neither the Selling Shareholder nor the Company shall be liable for any
success fee or other finders' fee to Deutsche Securities Limited or any other
broker, finder, investment banker or other third party representing or
purporting to represent Asyst.

     4.5  Accuracy of Representations and Warranties.  No representation or
          ------------------------------------------
warranty made in this Agreement by Asyst to the Selling Shareholder and the
Company contains any untrue statement of a material fact or omits to state a
material fact necessary in order to make the statements so made, in light of the
circumstances under which they are made, not misleading.

                                   ARTICLE 5

             COVENANTS OF THE SELLING SHAREHOLDER AND THE COMPANY

     5.1  General Covenants.  Prior to each of the Phase One Closing, the Phase
          -----------------
Two Closing and the Phase Three Closing, the Selling Shareholder shall, and
shall cause the Company to:

                                       16
<PAGE>

          (a) advise Asyst promptly of all developments relating to the Company
and each of the Core Subsidiaries and their respective business, operations,
prospects, properties, assets and financial condition;

          (b) advise Asyst promptly upon becoming aware of any fact, event,
circumstance or condition which constitutes, or with the passage of time or the
giving of notice, or both would constitute, a breach or default by the Company
or the Selling Shareholder under the terms of this Agreement; and

          (c) regularly consult with Asyst, and provide Asyst with an
opportunity to participate, with respect to any material decisions concerning
the Company and each of the Core Subsidiaries and their respective business,
operations, prospects, properties, assets and financial condition.

     5.2  Conduct of Business - Negative Covenants.  Prior to each of the Phase
          ----------------------------------------
One Closing and the Phase Two Closing, the Selling Shareholder shall not, and
shall cause the Company and the Core Subsidiaries not to, without first
obtaining Asyst's prior written consent in each instance, which consent shall
not be withheld unreasonably:

          (a) Issue, sell, transfer, pledge, encumber or otherwise dispose of
grant, permit or otherwise authorize any option, agreement, arrangement,
commitment, understanding or other right pursuant to which any third party has
the right or ability to acquire, split, reclassify, or change the rights and
privileges of, or redeem, repurchase or otherwise acquire (whether pursuant to
any employee stock option plan or otherwise), any interest in the Company,
including, without limitation, any Shares, or in any of the Core Subsidiaries;

          (b) Settle any lawsuit or any other claim in excess of (Yen)10,000,000
asserted against the Company or any of the Core Subsidiaries or any of their
respective officers, directors, shareholders, employees, representatives or
agents in their capacity as such;

          (c) Prepay any indebtedness, or pledge or subject to any lien, charge,
security interest or otherwise encumber any properties or assets of the Company
or any of the Core Subsidiaries;

          (d) Permit the third party long and short term indebtedness, bonds and
toza karikoshi (collectively, the "Indebtedness") of the Company to exceed a
maximum of (Yen)2,800,000,000, permit the Indebtedness of MECS Engineering Co.
to exceed a maximum of (Yen)35,000,000, or permit the Indebtedness of MECS
Material Inc. to exceed a maximum of (Yen)567,000,000;

          (e) Amend the charter documents of the Company or any of the Core
Subsidiaries or amend the Business Plan;

          (f) Violate any law, statute, ordinance, rule, regulation, order or
other requirement applicable to the conduct of business or operations of the
Company or any of the Core Subsidiaries, or relinquish, suffer, terminate or
agree to the suspension of any rights, or (except where the same are not
required) the termination or suspension of any of the Licenses, which,
individually or in the aggregate, could reasonably be expected to have a
material adverse

                                       17
<PAGE>

effect on the Company or any of the Core Subsidiaries or any of their respective
properties, assets, prospects, business, operations or financial condition;

     (g) Except as set forth on Schedule 3.8, cause or permit the Company or any
of the Core Subsidiaries to purchase or in any other manner, acquire for
consideration any properties or assets of the Selling Shareholder or any of
their respective Affiliates, or enter into any other agreement of any kind with
the Selling Shareholder or any of their respective Affiliates;

     (h) Make any distribution with respect to any of the equity interests of
the Company or any of the Core Subsidiaries;

     (i) Sell, assign or otherwise transfer any of the material properties or
assets of the Company or any of the Core Subsidiaries, including, without
limitation, any Fixed Assets or Intellectual Property Rights;

     (j) Borrow any funds or incur any other Liabilities (contingent or
otherwise) or guarantee any loans or any other obligations of others or
indemnify others;

     (k) Except as contemplated in Schedule 3.12, purchase or lease any interest
                                   -------------
in real property;

     (l) Consent to the extension of the statute of limitations applicable to
the examination of the tax returns of the Company or any of the Core
Subsidiaries;

     (m) Enter into any contracts or commitments for the purchase of materials,
supplies or equipment for amounts in excess of (Yen)10,000,000 in the aggregate;

     (n) Take any action or omit to take any action that would result in a
cancellation or breach of, or with notice or lapse of time or both would
constitute an event of default under, any Material Contract to which the Company
or any of the Core Subsidiaries is a party or by which any of its properties or
assets may be bound;

     (o) Merge or consolidate with, or purchase all or substantially all of the
shares of capital stock (or other equity securities) or assets of, any
corporation, company, association or any other business organization;

     (p) Adopt or implement any material change in the operating policies or
procedures of the Company or any of the Core Subsidiaries;

     (q) Take any action or omit to take any action that would cause any
representation made by the Selling Shareholder or the Company under Article 3
above to be made untrue, or would result in the breach of any warranty made by
the Selling Shareholder or the Company under Article 3 above;

     (r) Materially change or alter the manner of keeping the books, accounts or
records of the Company or any of the Core Subsidiaries, or in the accounting
practices of the Company or any of the Core Subsidiaries;

                                       18
<PAGE>

          (s) Make any payment or distribution of any nature whatsoever, whether
on account of special bonus, severance or retirement payment, or otherwise, to
any employee or director of the Company or any of the Core Subsidiaries, except
as specifically required by the express terms of applicable law or the express
terms of any employment agreement or service agreement applicable to such
employee (and in any such case only to the minimum extent required by such law
or agreement);

          (t) Take any actions which are reasonably likely to have a material
adverse effect on the operations, business, financial condition, assets,
properties or prospects of the Company or any of the Core Subsidiaries; or

          (u) Commit the Company or any of the Core Subsidiaries to do any of
the things described in this Section 5.2.

     5.3  Conduct of Business - Affirmative Covenants.  Prior to each of the
          -------------------------------------------
Phase One Closing and the Phase Two Closing, the Selling Shareholder will cause
the Company, and the Company shall, and shall cause each of the Core
Subsidiaries to, take any and all actions which may be necessary to conduct the
business and operations of the Company and each of the Core Subsidiaries in the
ordinary course of business and consistent with past practices, including,
without limitation, actions to:

          (a) Maintain their respective good standing and qualification to do
business in all jurisdictions where required to be qualified to do business;

          (b) Maintain the Company's aggregate cash and deposits, as reflected
on the Company's Financial Statements, at not less than (Yen)100,000,000
including restricted cash (betsudan yokin);

          (c) Maintain all the Licenses which are necessary for the conduct of
the business and operations of the Company and each of the Core Subsidiaries;

          (d) Continue to maintain its properties and assets in customary
repair, order and working condition, reasonable wear and use excepted;

          (e) Duly and substantially comply with all laws, statutes, rules and
regulations which are applicable to the Company or any of the Core Subsidiaries,
or any of their respective business, operations, properties or assets;

          (f) Duly and substantially comply with the terms, conditions or
provisions of all Material Contracts and Licenses to which the Company or any of
the Core Subsidiaries is a party or by which their respective business,
operations, properties or assets may be bound;

          (g) Maintain in force and effect insurance with respect to the conduct
of the business, operations, properties and assets of the Company or any of the
Core Subsidiaries to at least the same extent as set forth on Schedule 3.18;
                                                              -------------

                                       19
<PAGE>

          (h) Pay and discharge, before the same shall become delinquent, all
taxes, assessments and governmental charges imposed on or against the income or
profits or any of the business, operations, properties or assets of the Company
or any of the Core Subsidiaries;

          (i) Pay all costs and expenses of the Company and of the Core
Subsidiaries as they become due and payable in the ordinary course of business
and consistent with past practices;

          (j) Timely file tax returns and statements which are required to be
filed by the Company or any of the Core Subsidiaries;

          (k) Maintain the books, records and accounts of the Company, including
the Company Records, and of the Core Subsidiaries with completeness and accuracy
in the ordinary course of business and consistent with past practices;

          (l) Timely file or cause to be timely filed any and all reports,
statements or filings with all court or governmental or administrative bodies or
agencies;

          (m) Promptly furnish to Asyst a copy of any notice received by the
Selling Shareholder or the Company from any governmental authority of any
violation of any rule, regulation or ordinance applicable to the Company or any
of the Core Subsidiaries; and

          (n) Engage a qualified consultant to undertake a comprehensive review
of the Systems of the Company and the Core Subsidiaries, and the principal
products sold by the Company and the Core Subsidiaries, to assess the steps
required to make such Systems and products Year 2000 Compliant.

     5.4  Business Plan.  Without limiting any other provision of this Article
          -------------
5, promptly following the Phase One Closing and through the completion of the
Phase Two Closing, the Selling Shareholder shall, and shall cause the Company
to, implement the Business Plan and complete the various steps required
thereunder in a timely manner, including, without limitation, to:

          (a) Divest or otherwise dispose of all subsidiaries and affiliates of
the Company other than the Core Subsidiaries, on terms approved in advance in
writing by Asyst;

          (b) Use the proceeds of the divestiture or other disposal of such
subsidiaries and affiliates to reduce the indebtedness of the Company or for
such other purposes as may be approved from time to time by Asyst;

          (c) Obtain and maintain the unconditional release of the Company and
each of the Core Subsidiaries and their respective assets and properties from
any obligation or liability of any nature, including guaranties and security
interests, arising in connection with any divested or otherwise disposed of
subsidiaries or affiliates of the Company;

          (d) Use commercially reasonable efforts to persuade the lenders to the
Company and any of the Core Subsidiaries to continue and maintain their
respective levels of

                                       20
<PAGE>

lending to the Company and the Core Subsidiaries on at least the same levels as
were committed prior to the Phase One Closing, on terms and conditions
acceptable to Asyst; and

          (e) Use commercially reasonable efforts to ensure that the Company and
the Core Subsidiaries attain or exceed the financial performance targets set
forth in Schedule 7.2(a).
         ---------------

     5.5  Governance and Incentives.  Promptly following the Phase One Closing
          -------------------------
and through the Phase Two Closing, the Selling Shareholder shall, and shall
cause the Company to:

          (a) elect Douglas J. McCutcheon or such other replacement as may from
time to time be nominated by Asyst as a member of the Board of Directors of the
Company;

          (b) take commercially reasonable steps to retain employees and senior
management of the Company and of the Core Subsidiaries;

          (c) establish and implement technical assistance and support programs
by which Asyst employees are seconded to the Company and the Core Subsidiaries
and employees of the Company and the Core Subsidiaries are seconded to Asyst on
terms mutually agreed between the Company and Asyst;

          (d) establish and implement an incentive program for the Company and
the Core Subsidiaries in consultation with and approved by Asyst (such approval
not to be withheld unreasonably), which program shall include, without
limitation, stock options, bonuses and such other performance-based incentives
as may be agreed; and

          (e) register in the records of the Company any and all transfers of
Shares acquired by Asyst hereunder, whether in the name of Asyst or its
Affiliate.

     5.6  Access to Information and Personnel.  At reasonable times before each
          -----------------------------------
of the Phase One Closing, the Phase Two Closing, and the Phase Three Closing,
the Selling Shareholder shall cause the Company to, and the Company shall,
permit Asyst, through its representatives and agents, during normal business
hours, to speak with, interview and discuss the business and operations of the
Company and the Core Subsidiaries with the directors, officers, employees,
attorneys and agents of the Company and the Core Subsidiaries, and to visit the
premises of the Company and the Core Subsidiaries to examine any and all
records, books, contracts, files, working papers and drafts pertaining to the
business, operations, prospects, properties and assets of the Company and the
Core Subsidiaries, and to undertake such other steps as Asyst considers
appropriate to familiarize Asyst with the business, operations, prospects,
properties and assets or the Company and of the Core Subsidiaries.  The Selling
Shareholder shall, and shall cause the Company to, and the Company shall cause
the Core Subsidiaries to, cooperate fully with Asyst with respect to the
foregoing, and to furnish any and all financial, legal, technical and operating
data and other information pertaining to the business, operations, prospects,
properties and assets of the Company and of the Core Subsidiaries as Asyst may
reasonably request from time to time.

     5.7  Disclosure of Sale.  Prior to each of the Phase One Closing, the Phase
          ------------------
Two Closing, and the Phase Three Closing, except as may be required to comply
with the requirements of applicable securities laws after written notice to
Asyst, neither the Selling

                                       21
<PAGE>

Shareholder nor the Company shall make any statement to the press, press release
or other public announcement regarding this Agreement or the transactions
contemplated hereby, unless the text, timing and medium of the release of any
such statement have been approved by Asyst in writing.

     5.8  Confidentiality.  Neither the Selling Shareholder nor the Company
          ---------------
shall, without the prior written consent of Asyst, disclose or acquiesce in the
disclosure by any person or entity, including without limitation any of the Core
Subsidiaries, or use or enable a third party including without limitation any of
the Core Subsidiaries, to use to the competitive detriment of Asyst, any non-
public information regarding Asyst or its business or financial condition,
contained in any documents or otherwise furnished at any time to the Selling
Shareholder or the Company by or on behalf of Asyst; provided, however, that the
Selling Shareholder and the Company may disclose such information to their legal
counsel, accountants, financial advisors, investment bankers and their other
authorized agents and representatives, but only to the extent required for
activities directly related to the transactions contemplated by this Agreement.
The obligations of the Selling Shareholder and the Company under this Section
5.8 shall not extend to any information that has been publicly disclosed or is
otherwise in the public domain through no fault of the Selling Shareholder, the
Company, the Core Subsidiaries or their representatives, or that is required to
be disclosed by law or by a court of competent jurisdiction.

     5.9  Supplements to Schedules.  From time to time prior to each of the
          ------------------------
Phase One Closing and the Phase Two Closing, the Selling Shareholder and the
Company will promptly supplement or amend the Schedules attached hereto with
respect to any matter hereafter arising which, if existing or occurring at the
date hereto, would have been required to be set forth or described on the
Schedules.  Any such supplements or amendments to the Schedules shall be subject
to the review and approval of Asyst (such approval not to be withheld
unreasonably), and Asyst's approval of such supplements or amendments, if any,
shall be a condition precedent to Asyst's obligation to acquire the Selling
Shareholder Shares at the Phase One Closing, or the Selling Shareholder Shares
or the Other Shares at the Phase Two Closing.

                                   ARTICLE 6

                              COVENANTS OF ASYST

     6.1  Disclosure of Sale.  Prior to the Phase One Closing, except as may be
          ------------------
required to comply with applicable securities laws after written notice to the
Company, and except where a public announcement by Asyst is made necessary by
the rules of the NASDAQ National Market System in response to "leaks, innuendo
or other market moving forces" (in which case Asyst shall use reasonable efforts
to apprise the Company of an impending announcement), Asyst shall not make any
statement to the press, press release or other public announcement regarding
this Agreement or the transactions contemplated hereby, unless the text, time
and medium of the release of any such statement have been approved by the
Selling Shareholder in writing.

     6.2  Confidentiality.  Asyst shall not, without the prior written consent
          ---------------
of the Selling Shareholder, disclose or acquiesce in the disclosure by any
person or entity, or use or enable use to the competitive detriment of the
Selling Shareholder or the Company, any non-public information regarding any of
the Selling Shareholder, the Company, or their respective business or financial
condition contained in any documents or otherwise furnished at any time to Asyst
by

                                       22
<PAGE>

or on behalf of the Selling Shareholder, including without limitation Company
Intellectual Property Rights, provided, however, that Asyst may disclose such
information to its legal counsel, accountants, financial advisors, investment
bankers and its other authorized agents and representatives, but only to the
extent required for activities directly related to the transactions contemplated
by this Agreement.  The obligations of Asyst under this Section 6.2 shall not
extend to any information that has been publicly disclosed or is otherwise in
the public domain through no fault of Asyst or its representatives or that is
required to be disclosed by law or by a court of competent jurisdiction.

                                   ARTICLE 7

                  CONDITIONS PRECEDENT TO ASYST'S PERFORMANCE

     7.1  Conditions Precedent Specific to the Phase One Closing.  The specific
          ------------------------------------------------------
conditions precedent for Asyst to consummate the Phase One Closing, unless
otherwise waived by Asyst, are as follows:

          (a) The Selling Shareholder shall have, and shall have caused the
Company to, deliver Schedules 3.1, 3.2, 3.3, 3.6, 3.8, 3.10, 3.11, 3.12, 3.14,
                    ---------------------------------------------------------
3.15, 3.16, 3.17, 3.18, 3.19, 3.21, 3.22, 3.23 and 3.24 to Asyst, and all such
- -------------------------------------------------------
Schedules shall be in form and substance acceptable to Asyst;

          (b) The Selling Shareholder, the Company and Asyst shall have mutually
agreed upon the form and content of the Business Plan; and

          (c) The Selling Shareholder shall have delivered Selling Shareholder
Shares for sale to Asyst in an amount up to 10% of the total issued and
outstanding Shares.

     7.2  Conditions Precedent Specific to the Phase Two Closing.  The specific
          ------------------------------------------------------
conditions precedent to Asyst to consummate the Phase Two Closing, unless
otherwise waived by Asyst, are as follows:

          (a) The Company and the Core Subsidiaries shall have achieved or
otherwise satisfied the performance targets set forth on Schedule 7.2(a),
provided, however, that the costs and expenses in relation to the Company's
assessment of its Year 2000 compliance pursuant to Section 5.3(n) hereof
including the consultant costs, shall be excluded from the assessment of the
Company's and the Core Subsidiaries' achievement of such performance targets up
to a maximum of (Yen)20,000,000;

          (b) The Company and each of the Core Subsidiaries shall have retained
at least 90% of their respective full-time employees employed as of the Phase
One Closing, subject to adjustments for mutually agreed revisions in staffing
and personnel deployment, and the senior management of the Company listed on
Schedule 7.2(b) shall remain employed by the Company;
- ---------------

          (c) The Company shall have achieved the requirements set forth in the
Business Plan to the reasonable satisfaction of Asyst;

                                       23
<PAGE>

     (d) The Company shall have disposed of its interests in each of Intertech
K.K, MECS Ryu K.K., MECS Medical K.K., MECS Systems K.K., Technowave K.K. and
any other non Core Subsidiary; provided, however, that Asyst will reasonably
assess the possibility of allowing the Company to retain some or all of the
Company's interest in Technowave K.K., but Asyst shall not be obligated to do so
unless it determines to do so in its sole discretion;

     (e) The Company shall have received unconditional releases of the Company
and each of the Core Subsidiaries and their respective assets and properties
from any obligation or liability of any nature, including guaranties and
security interests, arising in connection with any divested or otherwise
disposed of subsidiaries or affiliates of the Company; provided, however, that
Asyst acknowledges that the Company may be required to maintain certain existing
guaranties, not to exceed (Yen)50,000,000, for each of MECS Ryu K.K. and MECS
Medical K.K., and provided, further, that if the Company incurs any liability
under such retained guaranties, Asyst shall have the right to seek appropriate
adjustments to the Purchase Price with respect to the Selling Shareholders
Shares;

     (f) The Company and Asyst shall have reached mutual agreement on the form
of incentives or other benefits that may be offered to the non-director
employees of the Company in relation to the Other Shares held by such non-
director employees of the Company;

     (g) The Company's Indebtedness shall not exceed a maximum of
(Yen)2,637,000,000, the Indebtedness of MECS Engineering Co. shall not exceed a
maximum of (Yen)35,000,000, the Indebtedness of MECS Material Inc. shall not
exceed a maximum of (Yen)567,000,000;

     (h) The Company's aggregate cash and deposits, as reflected on the
Company's Financial Statements, shall be not less than (Yen)385,000,000, of
which not more than (Yen)116,000,000 shall constitute restricted cash (betsudan
yokin);

     (i) All patents presently used or contemplated to be used in the business
or operations of the Company or of any of the Core Subsidiaries that are
presently owned or registered in the name of the Selling Shareholder or his
family members shall have been registered in the name of the Company;

     (j) The Company shall have reached agreement with its lenders and any
lenders to the Core Subsidiaries to continue and maintain their respective
levels of lending to the Company and the Core Subsidiaries on at least the same
levels as were committed prior to the Phase One Closing or such other levels as
may be acceptable to Asyst, on terms and conditions acceptable to Asyst;
provided, that Asyst acknowledges that it may be required to provide guaranties
or other accommodations to such lenders;

     (k) The Company and the Core Subsidiaries shall have implemented, to the
reasonable satisfaction of Asyst, all commercially reasonable steps recommended
by the consultant pursuant to Section 5.3(n) hereof;

     (l) The Company shall have resolved, to the satisfaction of Asyst, any
potential license rights, restrictions or other limitations in relation to the
Company's business, operations and Company Intellectual Property Rights arising
in connection with the Company's

                                       24
<PAGE>

prior transactions with Applied Materials Japan K.K. and the Company's patent
disputes with Rorze Co., Ltd.; and

     (m) The Selling Shareholder and the Participating Shareholders shall have
delivered on a pro rata basis Selling Shareholder Shares and Other Shares for
sale to Asyst in an amount equal to at least 66 2/3% of the total issued and
outstanding Shares.

     7.3  Conditions Precedent Specific to the Phase One Closing and the Phase
          --------------------------------------------------------------------
Two Closing.  The specific conditions precedent for Asyst to consummate each of
- -----------
the Phase One Closing and the Phase Two Closing, unless otherwise waived by
Asyst, are as follows:

        (a) The representations and warranties of the Selling Shareholder and
the Company contained in Article 3 above shall be true, correct and complete as
of the date when made, and on and as of the relevant closing, with the same
force and effect as if such representations and warranties had been made on the
relevant closing; and

        (b) The Selling Shareholder shall have delivered to Asyst a certificate
dated as of the relevant closing, signed by the Selling Shareholder, certifying
the truth and correctness of each of the representations and warranties of the
Selling Shareholder and the Company set forth in Article 3 above and the
fulfillment of the covenants of the Selling Shareholder and the Company set
forth in Article 5 above which are required by this Agreement to be performed
and satisfied on or prior to the relevant closing.

        (c) The Selling Shareholder shall certify to Asyst in a form and in a
manner reasonably satisfactory to Asyst and its counsel that, to the best
knowledge of the Selling Shareholder, since the execution date of this
Agreement, there has not been:

            (1) Any material adverse change in the financial condition,
business, operations, properties, assets or prospects of the Company or of any
of the Core Subsidiaries;

            (2) Any damage, destruction or loss, whether or not covered by
insurance, which has had or may have a material adverse effect on any of the
financial condition, business, operations, properties, assets or prospects of
the Company or of any of the Core Subsidiaries; or

            (3) The occurrence of any other event or the development of any
other condition which has had or is reasonably likely to have a material adverse
effect on the financial condition, business, operations, properties, assets or
prospects of the Company or of any of the Core Subsidiaries.

     7.4  Conditions Precedent to All of the Phase One Closing, the Phase Two
          -------------------------------------------------------------------
Closing and the Phase Three Closing.  The conditions precedent for Asyst to
- -----------------------------------
consummate each of the Phase One Closing, the Phase Two Closing and the Phase
Three Closing, unless otherwise waived by Asyst, are as follows:

          (a) It shall not have become illegal, on or prior to the Phase One
Closing, the Phase Two Closing or the Phase Three Closing, under any statute,
rule, order or regulation of Japan, the United States or any other relevant
jurisdiction for Asyst, the Selling Shareholder or

                                       25
<PAGE>

the Company to perform the transactions contemplated by this Agreement, provided
that such illegality shall not have arisen by reason of any wrongful act or
omission to act by Asyst;

          (b) Any and all necessary approvals and consents from all governmental
agencies and other third parties to complete the transactions contemplated
hereby shall have been obtained, and such approvals and consents shall not have
expired or been withdrawn as of the relevant closing;

          (c) There shall be no litigation, action, investigation, inquiry,
proceeding, order, writ, injunction, judgment or decree pending or threatened
relating to or affecting any of Asyst, the Selling Shareholder, the Company or
any of the Core Subsidiaries in any court, governmental agency or regulatory
authority prohibiting or challenging the consummation of the purchase and sale
of the Selling Shareholder Shares or the Other Shares or any of the other
transactions specified in or required by the terms of this Agreement, which, in
the reasonable opinion of legal counsel for Asyst, would make it necessary not
to consummate such transactions;

          (d) The form and substance of all certificates, instruments and other
documents delivered to Asyst under this Agreement shall be satisfactory in all
respects to Asyst and its legal counsel; and

          (e) The Selling Shareholder and, to the extent relevant, the
Participating Shareholders shall have delivered certificates evidencing the
Selling Shareholder Shares or the Other Shares, as applicable, in all cases duly
endorsed for transfer to Asyst or its Affiliate.

                                   ARTICLE 8

                          CONDITIONS PRECEDENT TO THE
              SELLING SHAREHOLDER'S AND THE COMPANY'S PERFORMANCE

     8.1  Conditions Precedent Specific to the Phase One Closing.  The specific
          ------------------------------------------------------
conditions precedent for the Selling Shareholder and the Company to consummate
the Phase One Closing, unless otherwise waived by the Selling Shareholder and
the Company, are as follows:

          (a) Asyst shall have delivered Schedules 7.2(a) and 7.2(b) to the
Selling Shareholder and the Company, and such Schedules shall be in form and
substance acceptable to the Selling Shareholder and the Company;

          (b) The Selling Shareholder, the Company and Asyst shall have mutually
agreed upon the form and content of the Business Plan; and

          (c) Asyst shall have delivered to the Selling Shareholder the Purchase
Price for the Selling Shareholder Shares to be sold by the Selling Shareholder
at the Phase One Closing, which number of Selling Shareholder Shares shall not
exceed 10% of the total issued and outstanding Shares.

                                       26
<PAGE>

  8.2     Conditions Precedent Specific to the Phase Two Closing.  The specific
          ------------------------------------------------------
conditions precedent to the Selling Shareholder and the Company to consummate
the Phase Two Closing, unless otherwise waived by the Selling Shareholder and
the Company, are as follows:

          (a) The Company and Asyst shall have obtained the release, on terms
and conditions satisfactory to the Selling Shareholder, of the guaranty issued
by the Selling Shareholder in favor of the Company's lenders, or, in the absence
of such release, such other accommodation as may be acceptable to the Selling
Shareholder in its reasonable discretion; and

          (b) Asyst shall have delivered to the Selling Shareholder the Purchase
Price for the Selling Shareholder Shares to be sold by the Selling Shareholder
at the Phase Two Closing, which number of Selling Shareholder Shares shall be at
least 66 2/3% of the total issued and outstanding Shares, inclusive of any Other
Shares delivered by Participating Shareholders and any Selling Shareholder
Shares delivered at the Phase One Closing.

  8.3     Condition Precedent Specific to the Phase Three Closing.  The specific
          -------------------------------------------------------
condition precedent to the Selling Shareholder and the Company to consummate the
Phase Three Closing, unless otherwise waived by the Selling Shareholder and the
Company, is that Asyst shall have delivered to the Selling Shareholder the
Purchase Price for the Selling Shareholder Shares to be sold by the Selling
Shareholder at the Phase Three Closing.

  8.4     Conditions Precedent to All of the Phase One Closing, the Phase Two
          -------------------------------------------------------------------
Closing the Phase Three Closing.  The conditions precedent for the Selling
- -------------------------------
Shareholder and the Company to consummate each of the Phase One Closing, the
Phase Two Closing and the Phase Three Closing, unless otherwise waived by the
Selling Shareholder and the Company, are as follows:

          (a) The representations and warranties of Asyst contained in Article 4
above shall be true, correct and complete as of the date when made, and on and
as of the relevant closing, with the same force and effect as if such
representations and warranties had been made on the relevant closing;

          (b) Asyst shall have delivered to the Selling Shareholder a
certificate dated as of the relevant closing, signed by Asyst, certifying the
truth and correctness of each of the representations and warranties of Asyst set
forth in Article 4 above and the fulfillment of the covenants of Asyst set forth
in Article 6 above which are required by this Agreement to be performed and
satisfied on or prior to the relevant closing;

          (c) It shall not have become illegal, on or prior to the Phase One
Closing, the Phase Two Closing or the Phase Three Closing, under any statute,
rule, order or regulation of Japan, the United States or any other relevant
jurisdiction for Asyst, the Selling Shareholder or the Company to perform the
transactions contemplated by this Agreement, provided that such illegality shall
not have arisen by reason of any wrongful act or omission to act by the Selling
Shareholder or the Company;

          (d) Any and all necessary approvals and consents from all governmental
agencies and other third parties to complete the transactions contemplated
hereby shall have been obtained, and such approvals and consents shall not have
expired or been withdrawn as of the relevant closing;

                                      27
<PAGE>

          (e) There shall be no litigation, action, investigation, inquiry,
proceeding, order, writ, injunction, judgment or decree pending or threatened
relating to or affecting any of Asyst, the Selling Shareholder, the Company or
any of the Core Subsidiaries in any court, governmental agency or regulatory
authority prohibiting or challenging the consummation of the purchase and sale
of the Shares or any of the other transactions specified in or required by the
terms of this Agreement, which, in the reasonable opinion of legal counsel for
the Selling Shareholder or the Company, would make it necessary not to
consummate such transactions; and

          (f) The form and substance of all certificates, instruments and other
documents delivered to the Selling Shareholder and the Company under this
Agreement shall be satisfactory in all respects to the Selling Shareholder and
its legal counsel.

                                   ARTICLE 9

                               CLOSING PROCEDURES

  9.1     The Phase One Closing.  The consummation of the Phase One Purchase and
          ---------------------
payment of any applicable installment of the Purchase Price shall be consummated
at the Phase One Closing, which shall take place on October 4, 1999, or as may
be extended by mutual written agreement of the parties, following fulfillment or
waiver, in accordance with this Agreement, of all conditions to the Phase One
Closing.  The Phase One Closing shall occur at the offices of the Company.

  9.2     Obligations of the Selling Shareholder.  At the Phase One Closing, the
          --------------------------------------
Selling Shareholder shall deliver, or shall cause to the Company to deliver, to
Asyst:

          (a) The certificates required by Sections 7.3(b) and 7.3(c) above;

          (b) Stock certificates duly endorsed for transfer to, Asyst or its
Affiliate (as directed by Asyst), representing the Selling Shareholder Shares
then being sold by the Selling Shareholder.

  9.3     Obligations of Asyst.  At the Phase One Closing, and against delivery
          --------------------
of each of the items required to be delivered by the Selling Shareholder under
Section 9.2 above, Asyst shall deliver to the Selling Shareholder:

          (a) The certificate required by Section 8.4(b) above; and

          (b) The Purchase Price payable in accordance with Section 2.4 for the
Selling Shareholder Shares delivered in the Phase One Closing.

  9.4     Subsequent Closings.  At the Phase Two Closing, subject to
          -------------------
satisfaction or waiver of all relevant conditions precedent, the Selling
Shareholder shall deliver the items required pursuant to Section 9.2(a).  At
each of the Phase Two Closing and the Phase Three Closing, subject to
satisfaction or waiver of all relevant conditions precedent, the Selling
Shareholder shall deliver the items required pursuant to Section 9.2(b), as
applicable to the relevant Closing, and Asyst shall deliver the items required
pursuant to Sections 9.3(a) and (b), as applicable to the

                                      28
<PAGE>

relevant closing. Nothing in this Section 9.4 shall preclude the parties from
mutually agreeing to add, delete or otherwise change any of the items required
for any subsequent closing.

  9.5     Further Assurances.  Each of the parties hereto agrees that, at any
          ------------------
time and from time to time after each relevant closing, it will take any and all
actions and execute and deliver to any other party such further instruments or
documents as may reasonably be required to give effect to the transactions
contemplated under this Agreement.

                                   ARTICLE 10

                          TERMINATION PRIOR TO CLOSING

  10.1    Events Permitting Termination.  This Agreement and the transactions
          -----------------------------
contemplated hereby may be terminated at any time prior to any of the Phase One
Closing, the Phase Two Closing or the Phase Three Closing upon the occurrence of
any of the following:

          (a) By the mutual consent in writing of Asyst and the Selling
Shareholder;

          (b) By Asyst, upon written notice to the other parties to this
Agreement, if any of the Selling Shareholder, the Company or any of the Core
Subsidiaries commences a voluntary proceeding of any nature, or any of them has
commenced against it an involuntary proceeding of any nature, seeking
liquidation, dissolution, reorganization or any other form of relief under any
bankruptcy, insolvency or other similar law now or hereafter in effect, or
seeking the appointment of a trustee, custodian, receiver, liquidator or other
similar entity for any of them or any substantial portion of any of their
assets, or if any of the Selling Shareholder, the Company or any of the Core
Subsidiaries makes an assignment for the benefit of creditors, or fails to pay
its material debts when due, or takes any corporate action to authorize any of
the foregoing;

          (c) by the Selling Shareholder and the Company, upon written notice to
the other parties to this Agreement, if Asyst commences a voluntary proceeding
of any nature, or Asyst has commenced against it an involuntary proceeding of
any nature, seeking liquidation, dissolution, reorganization or any other form
of relief under any bankruptcy, insolvency or other similar law now or hereafter
in effect, or seeking the appointment of a trustee, custodian, receiver,
liquidator or other similar entity for Asyst or any substantial portion of its
assets, or if Asyst makes an assignment for the benefit of creditors, or fails
to pay its material debts when due, or takes any corporate action to authorize
any of the foregoing;

          (d) By Asyst, upon 20 days' prior written notice to the other parties
to this Agreement, in the event of a material default in the due and timely
performance by the Selling Shareholder or the Company of any of their respective
warranties, covenants, agreements or obligations under this Agreement; provided,
however, that the defaulting party shall have a period of time in which to cure
such default, which period shall expire at the end of such 20 day prior notice
period; or

          (e) By the Selling Shareholder, upon 20 days' prior written notice to
the other parties to this Agreement, in the event of a material default in the
due and timely performance by Asyst of any of its warranties, covenants,
agreements or obligations under this Agreement;

                                      29
<PAGE>

provided, however, that Asyst shall have a period of time in which to cure such
default, which period shall expire at the end of such 20 day prior notice
period;

          (f) By either Asyst or the Selling Shareholder, on 30 days' prior
written notice to the other parties to this Agreement, if the Phase One Closing
has not occurred on or prior to October 31, 1999, provided that during such 30
day notice period, the parties shall discuss in good faith the feasibility of
extending the date for the Phase One Closing, or

          (g) By Asyst, on 10 days' prior written notice, if the conditions
precedent to the Phase Two Closing have not been satisfied on or before June 30,
2000, provided that during such 10 day notice period, the parties shall discuss
in good faith the feasibility of extending the date for the Phase Two Closing.

  10.2    General Procedures Upon Termination.  In the event of termination of
          -----------------------------------
this Agreement pursuant to Section 10.1 above, the party electing to terminate
this Agreement shall give notice of such election to terminate this Agreement to
the other parties hereto in the manner specified in Section 13.2 below, and the
transactions contemplated hereby shall be terminated without further action by
any party.  If the transactions are terminated as provided above:

          (a) Each party will return all documents, work papers and other
material of any other party relating to the transactions contemplated hereby,
and all copies thereof, whether so obtained before or after the execution
hereof, to the party furnishing the same, or at the option of the returning
party, destroy such documents, work papers and other material and copies
thereof;

          (b) All confidential information received by any party hereto with
respect to the business of any other party shall be treated in accordance with
Sections 5.8 and 6.2 above; and

          (c) No party hereto shall have any liability or further obligation to
any other party to this Agreement except as stated in this Section 10.2, Section
10.3 and Article 11.

  10.3    Specific Rights of the Selling Shareholder.  Upon any termination of
          ------------------------------------------
this Agreement prior to the consummation of the Phase Two Closing or if the
Phase Two Closing has not occur-red by December 31, 2000, the Selling
Shareholder shall have the right, but not the obligation, to require Asyst to
sell back to the Selling Shareholder and the Participating Shareholders, if any,
all but not less than all, of the Shares then held by Asyst.  If the Shares then
held by Asyst consist of both Selling Shareholder Shares and Other Shares, Asyst
agrees that such repurchase obligation' may be exercised by the Selling
Shareholder and the Participating Shareholders on a pro rata basis; provided
that the Selling Shareholder shall be obligated to repurchase any Other Shares
not so repurchased by the Participating Shareholders.  The price for such
repurchased Shares shall be the same price as Asyst paid for such Shares, and
the repurchase shall be completed within 15 days after written notice from the
Selling Shareholder and the Participating Shareholders, if any, of their
election to exercise the repurchase rights hereunder.  The repurchase price
shall be paid by wire transfer to an account designated by Asyst and such sale
shall be "AS IS, WHERE IS." For the avoidance of doubt, the rights of the
Selling

                                      30
<PAGE>

Shareholder and the Participating Shareholders under this Section 10.3
shall expire and be of no further force and effect upon the occurrence of the
Phase Two Closing.

                                   ARTICLE 11

                                INDEMNIFICATION

  11.1    Indemnification by the Selling Shareholder.  The Selling Shareholder
          ------------------------------------------
shall defend, indemnify and hold Asyst and its Affiliates and their respective
officers, directors, shareholders, employees and agents (the "Indemnified
Parties"), harmless from and against any and all claims, demands, damages,
liabilities, losses, costs, interest, penalties and expenses (including
attorneys' fees) of any kind or nature whatsoever which may be asserted against,
or sustained or incurred by the Indemnified Parties or any of them, as a result
of a breach of any representation, warranty or covenant contained in this
Agreement, or in any documents delivered pursuant hereto, including, without
limitation, any Schedule delivered pursuant hereto.  The obligations of the
Selling Shareholder pursuant to this Section 11.1 shall survive each of the
Phase One Closing, the Phase Two Closing and the Phase Three Closing.  No claims
may be asserted against the Selling Shareholder hereunder until the aggregate
amount of such claims exceeds (Yen)10,000,000, and in no event shall the Selling
Shareholder be liable hereunder for any amounts in excess of the total Purchase
Price paid by Asyst for all of the Selling Shareholder Shares.

  11.2    Indemnification by Asyst.  Asyst shall defend, indemnify and hold the
          ------------------------
Selling Shareholder harmless from and against any and all claims, demands,
damages, liabilities, losses, costs and expenses (including attorneys' fees) of
any kind or nature whatsoever which may be asserted against the Selling
Shareholder or sustained or suffered by the Selling Shareholder based upon or
related to a breach of any representation, warranty or covenant contained in
Articles 4 and 6 above.  The liability of Asyst under this Section 11.2 shall
survive each of the Phase One Closing, the Phase Two Closing and the Phase Three
Closing.

                                   ARTICLE 12

                   SURVIVAL OF REPRESENTATIONS AND WARRANTIES

     The respective representations and warranties of the parties contained
herein or in any certificates or the documents delivered prior to or at each
relevant closing shall not be deemed waived or otherwise affected by any
investigation made by any party hereto, and shall survive each relevant closing
for a period of three years.

                                   ARTICLE 13

                                 MISCELLANEOUS

  13.1    Expenses.  Asyst shall bear its own expenses in connection with the
          --------
transactions contemplated by this Agreement, including the fees of attorneys,
accountants, advisors, brokers, investment bankers and other representatives.
The Company shall bear the expenses incurred by the Selling Shareholder and the
Company in connection with the transactions contemplated by

                                      31
<PAGE>

this Agreement, including the fees of attorneys, accountants, advisors, brokers,
investment bankers and other representatives, up to a maximum of
(Yen)10,000,000, and all expenses in excess of such amount shall be borne by
the Selling Shareholder and the Company on a 50/50 basis.

  13.2    Notices.  Except as otherwise provided in this Agreement, all notices
          -------
and other communications shall be in writing and shall be personally delivered,
transmitted by telecopier, or transmitted by international air courier, as
elected by the party giving such notice, addressed as set forth on Schedule
13.2.

  Notices shall be deemed to have been given: (A) on the date of receipt, if
delivered personally, (B) on the next business day after transmission, if
transmitted by telecopier (and appropriate answerbacks have been received), or
(C) on the date of receipt, if transmitted by international air courier. Any
party hereto may change its address or telecopier number specified above by
giving written notice to the other parties hereto in the same manner as
specified in this Section 13.2.

  13.3    Counterparts.  This Agreement may be executed in any number of
          ------------
counterparts, each of which shall be an original, and all of which together
shall constitute but one and the same instrument.

  13.4    Waiver and Amendment.  Any party may by written instrument extend the
          --------------------
time for the performance of any of the obligations or other acts of any other
party hereunder and may waive (A) any inaccuracies of any other party in the
representations or warranties contained in this Agreement or in any document
delivered pursuant hereto, (B) compliance with any of the covenants,
undertakings or agreements of any other party, or satisfaction of any of the
conditions to its or their obligations, contained in this Agreement, or (C) the
performance (including performance to the satisfaction of a party or its legal
counsel) by any other party of any of its obligations set out herein.  Any
waiver, amendment or supplement hereof shall be in writing and signed by the
parties.

  13.5    Entire Agreement.  Unless otherwise specifically agreed in writing and
          ----------------
except for the Cooperation Agreement dated August 5, 1999 between Asyst and the
Company, this Agreement and the Schedules and Exhibits attached hereto represent
the entire understanding of the parties with reference to the transactions set
forth herein, and supersede all prior representations, warranties,
understandings and agreements heretofore made by the parties, and neither this
Agreement nor any provisions hereof may be amended, waived, modified or
discharged except by an agreement in writing signed by the parties.

  13.6    Binding, Agreement.  This Agreement shall be binding upon and inure to
          ------------------
the benefit of the parties hereto and their respective heirs, successors and
assigns.  The Selling Shareholder may not transfer or assign their respective
rights or obligations under this Agreement without obtaining the prior written
consent of Asyst.  Asyst shall have the right, exercisable in its sole
discretion at any time, to transfer or assign its rights or obligations under
this Agreement to any one or more of its Affiliates without obtaining the prior
consent of the Selling Shareholder, and upon such transfer or assignment, all
references herein to Asyst shall, to the extent applicable, be deemed to include
such Affiliate, except for the representation and warranty set forth in Section
4.1 which shall at all times refer to Asyst.  Notwithstanding any

                                      32
<PAGE>

transfer or assignment hereof by Asyst to any Affiliate, Asyst shall remain
primarily liable for the performance of the obligations hereunder.

  13.7    Governing Law and Attorneys' Fees.  This Agreement shall be governed
          ---------------------------------
by, and construed in accordance with, the laws of Japan, exclusive of its
conflicts of laws doctrine.  In the event of any action at law or suit in equity
in relation to this Agreement or any Schedule, Exhibit or other instrument or
agreement required hereunder, the prevailing party in such action or suit shall
be entitled to receive its attorneys' fees and all other costs and expenses of
such action or suit.

  13.8    Captions.  The captions of the various Sections and subsections hereof
          --------
and on the Exhibits and Schedules attached hereto are for convenience of
reference only, and shall not affect the meaning or construction of any
provision hereof or of any such Exhibits or Schedules.

  13.9    Parties in Interest.  Nothing in this Agreement, whether express or
          -------------------
implied, is intended to confer any rights or remedies under or by reason of this
Agreement on any persons other than the parties to it and their respective
successors and permitted assigns, nor is anything in this Agreement intended to
relieve or discharge the obligation or liability of any third persons to any
party to this Agreement, nor shall any provision give any third persons any
right of subrogation or action over or against any party to this Agreement.

  13.10   Severability: Construction.  In the event any provision hereof is
          --------------------------
determined to be invalid or unenforceable, the remaining provisions hereof shall
be deemed severable therefrom and shall remain in full force and effect.  Words
and phrases defined in the plural shall also be used in the singular and vice
versa and be construed in the plural or singular as appropriate and apparent in
the context used.

  13.11   Confidentiality of Agreement.  Each of Asyst, the Company and the
          ----------------------------
Selling Shareholder expressly acknowledge and agree that the existence and terms
and conditions of this Agreement and the Schedules, Exhibits and other documents
delivered pursuant hereto are confidential and proprietary and that substantial
harm may result from any disclosure hereof or thereof.  The parties, and each of
them, further acknowledge and agree that no party shall disclose the existence
or terms and conditions of this Agreement or any of the Schedules and other
documents delivered pursuant hereto without the prior written consent of the
other parties hereto, except as may be required in relation to securities law
compliance or unless and until a specific order or other decree has been issued
by a court of competent jurisdiction, and such order or other decree shall
specifically limit any and all disclosures to the counsel and the independent
accountants for the party obtaining such order or other decree.

                                      33
<PAGE>

     In Witness Whereof, the parties hereto have executed this Agreement as of
the day and year first written above.

Asyst Technologies, Inc.               MECS Corporation

By: /s/ Mihir Parikh                    By:  /s/ Kazuo Kimata
   ------------------------------           ------------------------------
Name: Mihir Parikh                       Name:  Kazuo Kimata
     ----------------------------             ----------------------------
Title: Chairman & CEO                    Title: CEO
      ---------------------------              ---------------------------


Selling Shareholder

 /s/ Kazuo Kimata
- ---------------------------------
Mr. Kazuo Kimata

                                      34

<PAGE>

                                                                     Exhibit 5.1

October 28, 1999

Asyst Technologies, Inc.
48761 Kato Road
Fremont, California 94538

Ladies and Gentlemen:

      You have requested our opinion with respect to certain matters in
connection with the filing by Asyst Technologies, Inc., a California
corporation (the "Company"), of a Registration Statement on Form S-3 (the
"Registration Statement") with the Securities and Exchange Commission, which
Registration Statement covers the underwritten public offering of up to
2,300,000 shares of the Company's common stock, with no par value (the
"Shares") (including 300,000 shares of Common Stock for which the underwriters
will be granted as over-allotment option). All of the shares are to be sold by
the Company as described in the Registration Statement.

      In connection with this opinion, we have examined and relied upon the
Registration Statement and related Prospectus included therein, the Company's
Amended and Restated Articles of Incorporation, as amended, and Bylaws, and the
originals or copies certified to our satisfaction of such records, documents,
certificates, memoranda and other instruments as in our judgment are necessary
or appropriate to enable us to render the opinion below. We have assumed the
genuineness and authenticity of all documents submitted to us as originals and
the conformity to originals of all documents where due execution and delivery
are a prerequisite to the effectiveness thereof. We have assumed that the
shares will be sold at a price established by the Pricing Committee of the
Board of Directors of the Company.

      On the basis of the foregoing, and in reliance thereon, we are of the
opinion that the Shares, when sold in accordance with the Registration
Statement and related Prospectus, will be validly issued, fully paid, and
nonassessable.

      We consent to the reference to our firm under the caption "Legal Matters"
in the Prospectus included in the Registration Statement and to the filing of
this opinion as an exhibit to the Registration Statement.

                                          Very truly yours,

                                          Cooley Godward LLP

                                          By:     /s/ James C. Kitch
                                            -----------------------------------
                                                      James C. Kitch

<PAGE>

                                                                    Exhibit 23.1

                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS

      As independent public accountants, we hereby consent to the incorporation
by reference in this registration statement of our report dated August 12, 1999
included in Asyst Technologies, Inc.'s Form 8-K/A for the year ended March 31,
1999 and to all references to our Firm included in this registration statement.

                                          /s/ Arthur Andersen LLP

San Jose, California

October 28, 1999

<PAGE>

                                                                    Exhibit 23.2

               CONSENT OF ERNST & YOUNG LLP, INDEPENDENT AUDITORS

      We consent to the reference to our firm under the caption "Experts" and
to the use of our report dated May 7, 1999, with respect to the financial
statements and schedules of Progressive System Technologies, Inc. incorporated
by reference from the Asyst Technologies, Inc. Current Report on Form 8-K/A
dated August 16, 1999 in Amendment No. 1 to the Registration Statement (Form S-
3 No. 333-89489) and related Prospectus of Asyst Technologies, Inc. for the
registration of 2,000,000 shares of its common stock.

                                          /s/ Ernst & Young LLP

Austin, Texas

October 29, 1999


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