COGNEX CORP
10-K, 1999-03-26
INDUSTRIAL INSTRUMENTS FOR MEASUREMENT, DISPLAY, AND CONTROL
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<PAGE>   1
 
                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                    FORM 10-K

(Mark One)
     [ X ] Annual report pursuant to Section 13 or 15(d) of the Securities
Exchange Act of 1934 for the fiscal year ended December 31, 1998 or

     [ ]  Transition report pursuant to Section 13 or 15(d) of the Securities
Exchange Act of 1934 for the transition period from 
to                                                  ----------------------
   -------------------------- 

                         COMMISSION FILE NUMBER 0-17869
                                                -------

                               COGNEX CORPORATION
          -------------------------------------------------------------
             (Exact name of registrant as specified in its charter)


                       MASSACHUSETTS                     04-2713778
            ------------------------------------   ----------------------
              (State or other jurisdiction of          (I.R.S. Employer
              incorporation or organization)           Identification No.)


                                ONE VISION DRIVE
                        NATICK, MASSACHUSETTS 01760-2059
                                 (508) 650-3000
           ------------------------------------------------------------
               (Address, including zip code, and telephone number,
              including area code, of principal executive offices)



Securities registered pursuant to Section 12(b) of the Act:  None

Securities registered pursuant to Section 12(g) of the Act:  Common Stock

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the registrant was
required to file such reports), and (2) has been subject to such filing
requirements for the past 90 days.

          Yes     X                                     No
             ---------                                    --------------

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405
of Regulation S-K is not contained herein, and will not be contained, to the
best of the registrant's knowledge, in definitive proxy or information
statements incorporated by reference in Part III of this Form 10-K or any
amendment to this Form 10-K. [ ]

          Aggregate market value of voting stock held by non-affiliates
                     as of February 28, 1999: $1,008,663,000

                 $.002 par value common stock outstanding as of
                      February 28, 1999: 40,346,520 shares

Documents incorporated by reference:
Specifically identified information in the Annual Report to Stockholders for the
year ended December 31, 1998, is incorporated by reference into Parts I and II
hereof.

Specifically identified information in the definitive Proxy Statement for the
Special Meeting in Lieu of the 1999 Annual Meeting of Stockholders to be held on
April 27, 1999, is incorporated by reference into Part III hereof.

A list of Exhibits to this Annual Report on Form 10-K is located on page 18.

================================================================================
<PAGE>   2


                       COGNEX CORPORATION ANNUAL REPORT ON
                 FORM 10-K FOR THE YEAR ENDED DECEMBER 31, 1998


                                      INDEX


   PART I
   ITEM 1.      BUSINESS
   ITEM 2.      PROPERTIES
   ITEM 3.      LEGAL PROCEEDINGS
   ITEM 4.      SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS
   ITEM 4A.     EXECUTIVE OFFICERS AND OTHER MEMBERS OF THE MANAGEMENT TEAM
                OF THE REGISTRANT

   PART II
   ITEM 5.      MARKET FOR THE REGISTRANT'S COMMON EQUITY AND RELATED
                STOCKHOLDER MATTERS
   ITEM 6.      SELECTED FINANCIAL DATA
   ITEM 7.      MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
                RESULTS OF OPERATION
   ITEM 7A.     QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK
   ITEM 8.      FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
   ITEM 9.      CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING
                AND FINANCIAL DISCLOSURE

   PART III
   ITEM 10.     DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT
   ITEM 11.     EXECUTIVE COMPENSATION
   ITEM 12.     SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND
                MANAGEMENT
   ITEM 13.     CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

   PART IV
   ITEM 14.     EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND REPORTS ON FORM 8-K



                                       
  
<PAGE>   3
                                   PART I

   The Company's results are subject to certain risks and uncertainties. This
   Annual Report on Form 10-K contains certain forward-looking statements within
   the meaning of the Federal Securities Laws. The Company's future results may
   differ materially from current results and actual results may differ
   materially from those projected in the forward-looking statements as a result
   of certain risk factors. Readers should pay particular attention to
   considerations described in the section captioned "Forward-Looking
   Statements" in Management's Discussion and Analysis of Financial Condition
   and Results of Operations appearing on page 18 of the Annual Report to
   Stockholders for the year ended December 31, 1998, which is Exhibit 13
   hereto, and is incorporated herein by reference, as well as considerations
   included in other documents filed with the Securities and Exchange
   Commission.

   ITEM 1.  BUSINESS

   CORPORATE PROFILE

        Cognex(R) Corporation ("Cognex" or the "Company," each of which term
   includes, unless the context indicates otherwise, Cognex Corporation and its
   subsidiaries) was incorporated in Massachusetts in 1981. Its principal
   executive offices are located at One Vision Drive, Natick, Massachusetts
   01760 and its telephone number is (508) 650-3000.
        The Company designs, develops, and markets machine vision systems that
   are used to automate a wide range of manufacturing processes where vision is
   required. Cognex machine vision systems consist of two primary elements: a
   computer, which serves as a "machine vision engine," and software that
   processes and analyzes images. When connected to a video camera, the machine
   vision system captures images and extracts information, which determines
   appropriate action for other equipment in the manufacturing process.
        Machine vision systems are used in a variety of industries including the
   semiconductor, electronics, automotive, consumer products, metals, plastics,
   and paper industries. Machine vision is important for applications in which
   human vision is inadequate due to fatigue, visual acuity, or speed, or in
   instances where substantial cost savings are obtained through the reduction
   of direct labor and improved product quality. Today, many types of
   manufacturing equipment require machine vision because of the increasing
   demands for speed and accuracy in manufacturing processes, as well as the
   decreasing size of items being manufactured.

   WHAT IS MACHINE VISION?

        In a typical machine vision application, a video camera positioned on
   the production line captures an image of the part to be inspected. The
   machine vision computer then uses sophisticated image analysis software to
   extract information from the image and provide an answer to a question.
   Cognex machine vision systems can answer four types of questions:

<TABLE>
<CAPTION>

     QUESTION              DESCRIPTION                            EXAMPLE
     --------              -----------                            -------

     GUIDANCE
     --------

     <S>                   <C>                                    <C>
     Where is it?          Determining the exact physical         Determining the position of a printed circuit board
                           location of an object.                 so that a robot can automatically be guided to
                                                                  insert electronic components.
</TABLE>

                                       1

<PAGE>   4
<TABLE>
<CAPTION>
     IDENTIFICATION
     --------------
<S>                        <C>                                    <C>
     What is it?           Identifying an object by analyzing     Identifying the serial number on an automotive
                           its shape or by reading a serial       airbag so that it can be tracked and processed
                           number.                                correctly through manufacturing.

     INSPECTION
     ----------

     How good is it?       Inspecting an object for flaws or      Inspecting the quality of printing on
                           defects.                               pharmaceutical labels and packaging.


     GAUGING      
     -------
     What size is it?      Determining the dimensions of an       Determining the diameter of a bearing prior to
                           object.                                final assembly.

</TABLE>

        Once the machine vision system has processed the image and performed any
   necessary analysis, the result is then communicated to other equipment on the
   factory floor, such as an industrial controller, a robotic arm, a deflector
   which removes the part from the line, a positioning table which moves the
   part, or alternatively, to a computer file for analysis or subsequent process
   control. This process is repeated during the manufacturing process as product
   moves into position in front of the camera. Machine vision systems can
   perform inspections quickly enough to keep pace with machines that process
   thousands of items or material feet per minute, thus increasing both quality
   and productivity.

   THE MACHINE VISION MARKET

        The machine vision market consists of two customer types: original
   equipment manufacturers (OEMs) and end users. OEMs are companies that build
   standard products sold as capital equipment for end users on the factory
   floor. These customers, most of which are in the semiconductor and
   electronics industries, have the technical expertise to build Cognex's
   programmable, board-level machine vision systems directly into their products
   which are then sold to end users.
        End users are companies that manufacture products, such as radios,
   telephones, ball-point pens, metals, and paper. While they may purchase
   capital equipment containing machine vision or hire a system integrator to
   build an inspection system, many end users choose to purchase machine vision
   directly for specific applications on their production lines. Unlike OEMs and
   system integrators, these customers typically have little or no computer
   programming or machine vision experience.
        System integrators are companies that create complete, automated
   inspection solutions for end users on the factory floor. For example, they
   combine lighting, conveyors, robotics, machine vision, and other components
   to produce custom inspection systems for various applications. Because system
   integrators encounter a broad range of automation problems, they purchase a
   variety of Cognex products, from general-purpose systems to
   application-specific systems tailored to solve particular manufacturing
   tasks. The Company includes system integrators in its definition of end
   users.

   BUSINESS STRATEGY

        The Company's goal is to expand its position as a leading worldwide
   supplier of machine vision systems for factory automation. Currently, the
   Company's products are designed for factory automation because the Company
   believes that this market offers the greatest opportunity for selling high
   value-added, standard products in high volume. Within the factory automation
   market, the Company has historically focused primarily on those customers who
   must have machine vision because of the increasing complexity of their
   products or manufacturing methods.




                                       2

<PAGE>   5

        Emphasizing high value-added products and applications is important to
   the Company's strategy because not every segment of the machine vision market
   offers opportunity for sustained profitability. High value-added is realized
   in the Company's products in several ways. The primary value-added is derived
   from offering unique vision software algorithms which solve challenging
   problems better than competing products. The other major mode of realizing
   high value-added is by offering products which are complete solutions to
   known problems, incorporating all of the necessary vision software,
   applications software, hardware, and electro-optics. Both modes of realizing
   high value-added require the Company to maintain an industry-leading level of
   investment in research, development, and engineering.
        Within the factory automation market, the Company has tailored its
   product offerings to match the characteristics of its two customer types:
   OEMs and end users. Historically, OEMs have been the source of the majority
   of the Company's sales. However, the Company believes that end users have the
   potential in the long term to generate more sales than OEMs. Consequently,
   the Company has invested in developing and acquiring products which meet the
   needs of end users and in developing a strong worldwide direct sales and
   support infrastructure. The Company will continue to invest in both customer
   types, defending its strong position in the OEM market while expanding in the
   end user market.
         The Company has historically pursued a global business strategy,
   investing in building a strong direct presence in North America, Japan,
   Europe, and Southeast Asia. In 1998, approximately 63% of the Company's
   revenue came from customers based outside of the United States. In all of
   these regions, the Company is acknowledged to be a leading machine vision
   supplier. The Company intends to continue to invest in the expansion of
   direct sales and support in these regions.
        The factory automation market for machine vision is comprised of many
   market niches defined by differing application requirements, industries, and
   cost/performance criteria. The Company's business strategy includes selective
   expansion into other industrial machine vision applications through the
   internal development of new products and the acquisition of companies and
   technologies. The Company's acquisitions to date include Acumen, Inc., a
   developer of machine vision systems for semiconductor wafer identification;
   Isys Controls, Inc., a developer of high-performance machine vision systems
   for high-speed surface inspection; Mayan Automation, Inc., a developer of
   intelligent camera-based machine vision systems for surface inspection; and
   certain technology of Rockwell Automation's Allen-Bradley machine vision
   business, which supplied machine vision systems to end users.

   PRODUCTS

        The Company designs, develops, and markets a wide range of machine
   vision products. These products include modular vision systems that are used
   to control the manufacturing of discrete items, such as semiconductor chips,
   cellular phones, and automobile wheels, by locating, identifying, inspecting,
   and measuring them during the manufacturing process. The Company's product
   offerings also include surface inspection vision systems that are used to
   inspect surfaces of materials that are manufactured in a continuous fashion,
   such as plastics, metals, and paper, to ensure that there are no flaws or
   defects on the surfaces.
        Machine vision systems sold by the Company are defined as either
   general-purpose or application-specific products. General-purpose systems
   enable customers to solve a wide range of problems by selecting the tools
   necessary to solve their vision problem from the Company's vision software
   library, and then configuring their solution by utilizing a programmable
   language or point-and-click interface. Application-specific systems are
   "packaged" combinations of software and hardware that are designed to solve
   targeted problems without any customization by the Company or its customers.

                                       3
<PAGE>   6



        GENERAL-PURPOSE SYSTEMS
        Vision Software Library
        The Company offers an extensive library of machine vision software which
   includes both low-level image processing software and high-level image
   analysis tools. The image processing software prepares the image for accurate
   analysis and the image analysis tools extract information about the image to
   locate, measure, and identify objects, characters, and codes. In 1997, the
   Company introduced PatMaxTM, a pattern location tool that can locate with
   very high accuracy objects that vary in size and orientation or whose
   appearance is degraded. In 1998, the Company introduced PatInspectTM, a
   vision software tool that combines high-accuracy part location and defect
   detection capabilities in a single vision operation and detects flaws along
   the edges or boundary regions of objects.
        MVS-8000 product family
        In 1998, the Company introduced its next generation of vision systems
   (programmable in C++ language), the MVS-8000 product family, which combines
   Cognex's unique algorithms with Intel's new MMX instruction set. Prior to
   this introduction, all of the Company's software ran only on its own
   proprietary hardware which was based on the Motorola 68k line of
   microprocessors. For host-based processing, the MVS-8100 Series features a
   PCI bus-mastering frame grabber for high-speed image transfer from the video
   camera to the host PC for processing and display. For embedded processing,
   the MVS-8200 Series of embedded CPU vision systems enable all vision
   processing to occur on-board, freeing the PC to perform other tasks. The
   MVS-8000 product family features Cognex's new Object Manager Interface (OMI),
   which provides a graphical interface to each tool in the Cognex vision
   software library.
        The MVS-8000 product family is sold primarily to OEMs located in North
   America and Japan who integrate the vision systems into manufacturing
   equipment for the semiconductor and electronics industries. These vision
   systems are also sold to system integrators located principally in North
   America, Japan, Europe, and Southeast Asia who integrate the vision systems
   into manufacturing equipment for the factory floor in industries ranging from
   automotive to consumer products.
        Checkpoint product family
        The Checkpoint(R) product family is designed for customers with little
   or no computer programming or machine vision experience. Checkpoint combines
   the Company's existing vision software and standard vision hardware platforms
   with a unique Microsoft Windows-based graphical user interface (GUI).
   Customers utilize pull-down menus and dialog boxes in the GUI to create
   customized vision applications. This easy-to-use, point-and-click programming
   environment enables the developer to focus on tasks associated with solving
   the overall vision application, freeing the developer from the detail and
   complexity of a programming language.
        Checkpoint is sold primarily to end users located in North America,
   Japan, Europe, and Southeast Asia in a wide range of general manufacturing
   industries, such as manufacturers of medical devices, automotive parts,
   disposable consumer goods, and electronic components. Although the
   application environment is designed for customers with little or no computer
   programming or machine vision experience, deployment of Checkpoint on the
   factory floor requires the services of trained system integrators to
   mechanically and electrically integrate Checkpoint into manufacturing lines.
        Other General-Purpose Systems
        The Company continues to offer vision systems (programmable in C
   language) that run on its own proprietary hardware including the Cognex 4000
   Series which plugs directly into a VME backplane, as well as the Cognex 5000
   Series which run on the PC.

                                       4
<PAGE>   7

        APPLICATION-SPECIFIC SYSTEMS
        The Company also offers a variety of application-specific systems that
   combine Cognex hardware and software to create a solution that is tailored to
   the particular requirements of certain vision applications. These products
   are sold to OEMs and end users worldwide. A partial list of
   application-specific systems is as follows:
        Surface Mount Device Placement Guidance Package (SMD/PGP), when coupled
   with a Cognex 4000, 5000, or 8000 Series vision system, quickly and
   accurately locates fiducial marks on printed circuit boards for alignment,
   inspects the quality of surface mount devices, and then guides the placement
   of those devices onto printed circuit boards. 
        acuReader/Optical Character Recognition (OCR) reads degraded serial
   numbers from semiconductor wafers with near 100% accuracy.
        acuReader/2D locates and decodes two-dimensional matrix codes. The
   two-dimensional codes are used as alternative marks for identifying wafers,
   integrated circuit packages, liquid crystal display (LCD) panels,
   pharmaceutical packages, and for small parts tracking applications.
        Ball Grid Array (BGA) Inspection Package inspects BGA devices for
   missing, misplaced, or improperly formed solder balls.
        Fiducial Finder II locates fiducial or alignment marks on printed
   circuit boards for automatic printed circuit board alignment.
        DisplayInspect software inspects the small, high resolution displays
   commonly found on cellular phones, pagers, medical test instruments, and
   other electronic devices.
        iS High Performance Inspection Systems detect and classify defects in
   the most challenging surface inspection applications. iS systems are built
   from a family of hardware and software components which include proprietary
   line-scan cameras with motorized camera mounts, specialized lighting systems,
   ultra-high performance image processing boards, Unix workstations, and
   intelligent defect detection and classification software algorithms. iS
   systems can contain from one to sixty cameras and can be used to inspect webs
   up to 25 feet wide at speeds of up to 5,000 feet per minute. iS systems are
   primarily sold to producers of metals, specialized coated paper, and
   high-value non-woven materials.
        Fine-Line(TM) Intelligent Camera Systems are complete surface
   inspection devices packaged in a compact and rugged enclosure. Each camera
   contains a line-scan charge-coupled device (CCD) sensor, image digitizer,
   digital signal processor (DSP), custom hardware for pixel processing, surface
   inspection algorithms in firmware, and a CPU for control and communications.
   In addition to the camera, the Company provides a PC-based operator
   interface, specialized lighting components, supporting mechanical components,
   and power supply/control boxes to provide customers with a complete solution
   to their surface inspection applications. Fine-Line systems can be used in a
   single-camera, "stand-alone" fashion for simple, narrow web applications, or
   they can be installed in multi-camera configurations to view wider webs.
   Fine-Line systems are targeted primarily at the plastics, non-wovens, and
   converting markets.
        SmartView(TM) Modular Camera Network (MCN), introduced in 1998, detects,
   measures, and classifies defects on products made in continuous processes.
   SmartView systems have a drag-and-drop Windows NT-based interface with some
   of the features previously only associated with high-end systems. In addition
   to providing flexibility, the systems offers more power than its predecessor,
   the Fine-Line Intelligent Camera System, and has enabled the Company to
   expand into more complex applications, including the inspection of high-end
   plastics and non-wovens.

                                       5
<PAGE>   8

   RESEARCH, DEVELOPMENT, AND ENGINEERING

        The Company engages in research, development, and engineering (R, D & E)
   to enhance its existing products and to develop new products and
   functionality to meet market opportunities. In addition to internal research
   and development efforts, the Company intends to continue its strategy of
   gaining access to new technology through strategic relationships and
   acquisitions where appropriate. The Company considers its on-going efforts in
   R, D & E to be a key component of its strategy.
        At December 31, 1998, the Company employed 152 professionals in R, D &
   E, most of whom are software developers. The Company's R, D & E expenses
   totaled $24,662,000, $22,481,000, and $19,434,000, or 20%, 14%, and 16% of
   revenue, in 1998, 1997, and 1996, respectively.

   MANUFACTURING

        The majority of the Company's vision systems are manufactured at its
   Natick, Massachusetts headquarters. The Company's Natick manufacturing
   organization utilizes a turnkey manufacturing operation whereby the majority
   of component procurement, subassembly, final assembly, and initial testing
   are performed under agreement by third-party contractors. After the
   completion of initial testing, the third-party contractors deliver the
   products to the Company to perform final testing and assembly. The products
   provided by the third-party contractors are manufactured using specified
   components and assembly and test documentation created and controlled by the
   Company. Certain components purchased by the third-party contractors are
   presently available from a single source.
        The Company's iS High Performance Inspection systems are manufactured at
   its Alameda, California facility and its Fine-Line Intelligent Camera systems
   and SmartView Modular Camera Network systems are manufactured at its
   Montreal, Canada facility. The manufacturing processes at the Alameda and
   Montreal facilities consist of systems design, configuration management and
   control, component procurement, subassembly, integration and final test,
   quality control, shipment, and installation. Certain products are
   manufactured by third-party contractors using assembly and test documentation
   created and controlled by the Company. Certain components purchased by the
   third-party contractors are presently available from a single source.

   SALES AND SUPPORT

        The Company markets its products through a direct sales force in North
   America, and through a direct sales force and distributors in Japan, Europe,
   and Southeast Asia. The Company's distributors do not have any rights of
   return and payment for products is due upon delivery. Distributors generally
   have non-exclusive distribution rights and there may be more than one
   distributor per territory.
        At December 31, 1998, the Company's direct sales and service force
   consisted of 130 professionals, including sales and application engineers.
   The majority of the Company's sales and service personnel have engineering or
   science degrees. Sales engineers call directly on targeted accounts and
   coordinate the activity of the application engineers. They focus on potential
   customers that represent possible volume purchases and long-term
   relationships. Opportunities that represent single-unit sales or turnkey
   system requirements are identified by the sales engineer and turned over to
   an independent system integrator or OEM that uses the Company's products. The
   Company sells to OEMs, many of whom have entered or are expected to enter
   into volume discount contracts with the Company. These contracts are
   typically for one year and have associated delivery schedules.
        Sales to international customers represented approximately 63%, 62%, and
   55% of revenue in 1998, 1997, and 1996, respectively. One customer based in
   Japan, Fuji America Corporation, accounted for approximately 14%, 18%, and
   11% of revenue in 1998, 1997, and 1996, respectively. Information about
   operating segments and geographic areas, as well as foreign currency and
   related

                                       6

<PAGE>   9

   risk may be found in the Notes to the Consolidated Financial Statements,
   appearing on page 37 and pages 24 through 26 of the Annual Report to
   Stockholders for the year ended December 31, 1998, which is Exhibit 13
   hereto, and is incorporated herein by reference. Although international sales
   may from time to time be subject to federal technology export regulations,
   the Company to date has not suffered delays or prohibitions in sales to any
   of its foreign customers.
        The Company's support offerings include vision solutions consulting
   services, technical support, educational services, and product services. The
   Company's vision solutions consulting services provides, for a fee, services
   which range from a specific piece of programmed functionality to a completely
   integrated machine vision application. The technical support group consists
   of a team of vision experts ready to respond to questions that may arise
   while customers are developing or deploying a Cognex machine vision
   application. The educational services group offers more than 50 different
   product courses which are held at its Customer Education Center in Natick,
   Massachusetts, and at certain of its worldwide offices, as well as at
   customer facilities when required. The product services group offers a
   variety of software and hardware maintenance programs that provide updates on
   the latest software releases and new software vision tools.
   
   PATENTS AND LICENSES

        Since the Company relies on the technical expertise, creativity, and
   knowledge of its personnel, it utilizes patent, copyright, and trade secret
   protection to safeguard its competitive position. The Company has obtained 39
   patents on various innovations in the field of machine vision technology and
   has over 100 pending patent applications. In addition, the Company makes use
   of non-disclosure agreements with customers, suppliers, employees, and
   consultants. The Company attempts to protect its intellectual property by
   restricting access to its proprietary information by a combination of
   technical and internal security measures. However, there can be no assurance
   that any of the above measures will be adequate to protect the proprietary
   technology of the Company. Effective patent, copyright, and trade secret
   protection may be unavailable in certain foreign countries.
        The Company's trademark portfolio includes various common-law and
   registered marks, including but not limited to Cognex(R) , Checkpoint(R) ,
   PatMax(TM), PatInspect(TM), Fine-Line(TM), and SmartView(TM). In addition,
   the Company has sought and obtained a number of trademark registrations
   outside of the United States. All third-party brand names, service marks, and
   trademarks referenced in this document are the property of their respective
   owners.
        The Company's software products are primarily licensed to customers
   pursuant to a license agreement that restricts the use of the products to the
   customer's purposes on a designated Cognex machine vision engine. The Company
   has made portions of the source code available to certain customers under
   very limited circumstances and for restricted uses. If source code is
   released to a customer, the customer is required by contract to maintain its
   confidentiality and, in general, to use the source code solely for internal
   purposes or for maintenance.
        Numerous users of the Company's products have received notice of patent
   infringement from the Lemelson Medical, Educational, & Research foundation,
   Limited Partnership ("Partnership") alleging that their use of the Company's
   products infringes certain patents transferred to the Partnership by the late
   Jerome H. Lemelson. Certain of these users have notified the Company that, in
   the event it is subsequently determined that their use of the Company's
   products infringes any of the Partnership's patents, they may seek
   indemnification from the Company for damages or expenses resulting from this
   matter.
        In July 1998, the Partnership filed a lawsuit against 26 semiconductor
   device manufacturers asserting infringement upon numerous Lemelson patents
   including certain machine vision patents. Several of the defendants are users
   of the Company's products that were purchased primarily from the Company's
   OEM customers whose equipment incorporate such products. As a result of this
   action and the continuing assertions against other current and potential
   Cognex customers, the Company decided to initiate action against the
   Partnership in order to preserve its right to sell machine vision products

                                       7
<PAGE>   10

   without the threat of legal action against the Company or its customers.
   Accordingly, on September 23, 1998, the Company filed a complaint against the
   Partnership seeking a declaration that Lemelson's machine vision patents are
   invalid, unenforceable, and not infringed by either Cognex or by any users of
   Cognex products. The complaint was served on the Partnership on October 14,
   1998. It will likely be several years before a decision is rendered by the
   Court. The Company cannot predict the outcome of this litigation or any
   similar litigation that may arise in the future, or the effect of such
   litigation on the financial results of the Company. The Company does not
   believe its products infringe any valid and enforceable claims of Lemelson's
   patents. Furthermore, the Partnership has stated that it is not the Company's
   products that infringe Lemelson's patents, but rather the use of those
   products by the Company's customers.

   COMPETITION

        The Company competes with other vendors of machine vision systems, the
   internal engineering efforts of the Company's current or prospective
   customers, and the manufacturers of image processing systems. Any of these
   competitors may have greater financial and other resources than the Company.
   Although the Company considers itself to be one of the leading machine vision
   companies in the world, reliable estimates of the machine vision market and
   the number of competitors are almost non-existent, primarily because of
   definitional confusion and a tendency toward double-counting of sales. The
   primary competitive factors affecting the choice of a machine vision system
   include product functionality and performance (e.g. speed, accuracy, and
   reliability) under real-world operating conditions, flexibility,
   programmability, and the availability of application support from the vendor.
   More recently, ease-of-use has become a competitive factor and product price
   has become a more significant factor with respect to simpler guidance and
   gauging applications. The Company competes with the lower-cost, software-only
   solutions being introduced by various competitors on the basis of superior
   performance and price, rather than on price alone, through its MVS-8000
   product family.

   BACKLOG

        At December 31, 1998, the Company's backlog totaled $17,216,000,
   compared to $32,618,000 at December 31, 1997. Backlog reflects purchase
   orders for products scheduled for shipment within three months. The level of
   backlog at any particular date is not necessarily indicative of future
   revenue of the Company. Delivery schedules may be extended and orders may be
   canceled at any time subject to certain cancellation penalties.

   EMPLOYEES

        At December 31, 1998, the Company employed 575 persons, including 237 in
   sales, marketing, and support activities; 152 in research, development, and
   engineering; 73 in manufacturing and quality assurance; and 113 in
   information technology, finance, and administration. Of the Company's 575
   employees, 168 are located outside of the United States. None of the
   Company's employees are represented by a labor union and the Company has
   experienced no work stoppages. The Company believes that its employee
   relations are good.


                                       8

<PAGE>   11


   ITEM 2:  PROPERTIES

        In 1994, the Company purchased and renovated a 100,000 square-foot
   building located in Natick, Massachusetts which serves as its corporate
   headquarters. In 1997, the Company completed construction of a 50,000
   square-foot addition to this building.
        In 1995, the Company purchased an 83,000 square-foot office building
   adjacent to its corporate headquarters. The building is currently occupied
   with tenants who have lease agreements that expire at various dates through
   the year 2000, at which point, the Company may take occupancy of the
   building.
        In 1997, the Company purchased a three and one-half acre parcel of land
   situated on Vision Drive, adjacent to the Company's corporate headquarters.
   This land is anticipated to be used for future expansion.

   ITEM 3:  LEGAL PROCEEDINGS

        To the Company's knowledge, there are no pending legal proceedings,
   other than as described in "Business - Patents and Licenses," which are
   material to the Company to which it is a party or to which any of its
   property is subject. From time to time, however, the Company may be subject
   to various claims and lawsuits by customers and competitors arising in the
   normal course of business, including suits charging patent infringement.

   ITEM 4:  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

        There were no matters submitted during the fourth quarter of the year
   ended December 31, 1998 to a vote of security holders through solicitation of
   proxies or otherwise.

                                       9

<PAGE>   12


   ITEM 4A:  EXECUTIVE OFFICERS AND OTHER MEMBERS OF THE MANAGEMENT TEAM OF THE
   REGISTRANT

        The following table sets forth the names, ages, and titles of the
   Company's executive officers at December 31, 1998:
<TABLE>
<CAPTION>

   NAME                          AGE           TITLE
   ----                          ---           -----

   <S>                           <C>           <C>                                                       
   Robert J. Shillman            52            President, Chief Executive Officer, and Chairman of the
                                               Board of Directors
   Patrick Alias                 53            Executive Vice President, Worldwide Sales and Marketing
   Glenn Wienkoop                51            Executive Vice President, Chief Operating Officer

</TABLE>

   Messrs. Shillman and Alias have been employed by the Company in their present
   or other capacities for no less than the past five years. 

   Mr. Wienkoop joined the Company in 1997 as Executive Vice President of
   Subsidiary Operations and was promoted to Executive Vice President and Chief
   Operating Officer in January 1999. From 1975 to 1997, he served in a number
   of capacities, most recently as Executive Vice President and Division
   President at Measurex Corporation, a supplier of computer-integrated
   measurement, control, and information systems for continuous manufacturing
   processes. 

   Executive officers are elected annually by the Board of Directors. There are
   no family relationships among the directors and the executive officers of the
   Company.

                      OTHER MEMBERS OF THE MANAGEMENT TEAM

<TABLE>
<CAPTION>
   NAME                          AGE           TITLE
   ----                          ---           -----

<S>                              <C>           <C>                                                        
   E. John McGarry               42            Vice President and General Manager - Portland Operations
   William Silver                45            Vice President and Chief Technology Officer
</TABLE>

   Mr. Silver has been employed by the Company in his present or other
   capacities for no less than the past five years. 

   Mr. McGarry joined the Company in 1995 when the company he founded in 1991,
   Acumen, Inc., was acquired by Cognex. From 1991 to 1995, he served as
   President of Acumen, Inc., a developer of machine vision systems for
   semiconductor wafer identification.

                                       10


<PAGE>   13


                                     PART II

   ITEM 5:  MARKET FOR THE REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER
   MATTERS

        Certain information with respect to this item may be found in the
   section captioned "Selected Quarterly Financial Data," appearing on page 42,
   and the section captioned "Company Information," appearing on page 43 of the
   Annual Report to Stockholders for the year ended December 31, 1998, which is
   Exhibit 13 hereto, and is incorporated herein by reference.
        The Company has never declared or paid cash dividends on shares of its
   common stock. The Company currently intends to retain all of its earnings to
   finance the development and expansion of its business and therefore does not
   intend to declare or pay cash dividends on its common stock in the
   foreseeable future. Any future declaration and payment of dividends will be
   subject to the discretion of the Company's Board of Directors, will be
   subject to applicable law, and will depend upon the Company's results of
   operations, earnings, financial condition, contractual limitations, cash
   requirements, future prospects, and other factors deemed relevant by the
   Company's Board of Directors.

   ITEM 6:  SELECTED FINANCIAL DATA

        Information with respect to this item may be found in the section
   captioned "Five-Year Summary of Selected Financial Data," appearing on page
   19 of the Annual Report to Stockholders for the year ended December 31, 1998,
   which is Exhibit 13 hereto, and is incorporated herein by reference.

   ITEM 7:  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
   RESULTS OF OPERATIONS

        Information with respect to this item may be found in the section
   captioned "Management's Discussion and Analysis of Financial Condition and
   Results of Operations," appearing on pages 12 through 18 of the Annual Report
   to Stockholders for the year ended December 31, 1998, which is Exhibit 13
   hereto, and is incorporated herein by reference.

   ITEM 7A:  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

        The Company faces exposure to financial market risks, including adverse
   movements in foreign currency exchange rates and changes in interest rates.
   These exposures may change over time as business practices evolve and could
   have a material adverse impact on the Company's financial results. The
   Company's primary exposure has been related to local currency revenue and
   operating expenses in Japan, Europe, and Southeast Asia. Historically, the
   Company has hedged currency exposures associated with certain intercompany
   payables denominated in local currencies and certain foreign currency revenue
   transactions. The goal of the Company's hedging activity is to offset the
   impact of currency fluctuations on certain local currency intercompany
   payables and foreign currency revenue transactions. The success of this
   activity depends upon forecasts of transaction activity denominated in
   various currencies. To the extent that these forecasts are overstated or
   understated during periods of currency volatility, the Company could
   experience unanticipated currency gains or losses.
        Outstanding forward foreign exchange contracts in Japanese yen at
   December 31, 1998 mature within six months. Indicators as of February 1,
   1999, show that the dollar is expected to strengthen

                                       11
<PAGE>   14

   against the yen by June 30, 1999, to approximately 128 yen/USD. The
   hypothetical gain in cash flows of these yen forward contracts is estimated
   to be $976,000 using these assumptions.
            The carrying amounts reflected in the consolidated balance sheets of
   cash and cash equivalents, trade receivables, and trade payables approximate
   fair value at December 31, 1998 due to the short maturities of these
   instruments.
        The Company maintains investment portfolio holdings of various issuers,
   types, and maturities. The Company's cash and investments include cash
   equivalents, which the Company considers to be investments purchased with
   original maturities of three months or less. Investments having original
   maturities in excess of three months are stated at amortized cost, which
   approximates fair value, and are classified as available-for-sale. Given the
   short maturities and investment grade quality of the portfolio holdings at
   December 31, 1998, a sharp rise in interest rates should not have a material
   adverse impact on the fair value of the Company's investment portfolio. As a
   result, the Company does not currently hedge these interest rate exposures.
        The following table (dollars in thousands) presents hypothetical changes
   in fair value in the Company's financial instruments at December 31, 1998
   that are sensitive to changes in interest rates. The modeling technique
   measures the change in fair value arising from selected potential changes in
   interest rates. Movements in interest rates of plus or minus 50 basis points
   ("BP") and 100 BP reflect immediate hypothetical shifts in the fair value of
   these investments. Fair value represents the market principal plus accrued
   interest and dividends of certain interest-rate-sensitive securities at
   December 31, 1998.
<TABLE>
<CAPTION>

  ------------------------- ------------------------------- ---------------- ----------------------------------------
                            Valuation of securities given    No change in       Valuation of securities given an
      Type of security        an interest rate decrease     interest rates           interest rate increase
  ------------------------- ------------------------------- ---------------- ----------------------------------------
  ------------------------- -------------- ---------------- ---------------- -------------------- -------------------
   
                              (100 BP)         (50 BP)                            50 BP               100 BP
  ------------------------- -------------- ---------------- ---------------- -------------------- -------------------
  ------------------------- -------------- ---------------- ---------------- -------------------- -------------------
<S>                           <C>             <C>              <C>                <C>              <C>
  Municipal obligations
  with contractual            $ 154,998       $ 156,016        $ 157,035          $ 158,054           $ 159,072
  maturities no greater
  than 3 years
  ------------------------- -------------- ---------------- ---------------- -------------------- -------------------
</TABLE>

        A 50 BP move in the Federal Funds Rate has occurred in nine of the last
   40 quarters. There has not been a 100 BP movement in the Federal Funds Rate
   in any of the last 40 quarters.

   ITEM 8:  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

        Information with respect to this item, which includes the consolidated
   financial statements and notes thereto, report of independent accountants,
   and supplementary data, may be found on pages 19 through 42 of the Annual
   Report to Stockholders for the year ended December 31, 1998, which is Exhibit
   13 hereto, and is incorporated herein by reference.

   ITEM 9:   CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
   FINANCIAL DISCLOSURE

        There were no changes in or disagreements with accountants on accounting
   or financial disclosure during 1998 or 1997.

                                       12


<PAGE>   15


                                    PART III

   ITEM 10:  DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT

        Information with respect to Directors of the Company may be found in the
   section captioned "Election of Directors," appearing in the definitive Proxy
   Statement for the Special Meeting in Lieu of the 1999 Annual Meeting of
   Stockholders to be held on April 27, 1999. Such information is incorporated
   herein by reference. Information with respect to Executive Officers of the
   Company may be found in the section captioned "Executive Officers and Other
   Members of the Management Team of the Registrant," appearing in Part I of
   this Annual Report on Form 10-K.

   ITEM 11:  EXECUTIVE COMPENSATION

        Information with respect to this item may be found in the sections
   captioned "Information Concerning the Board of Directors,"
   "Compensation/Stock Option Committee Report on Executive Compensation,"
   "Comparison of Five Year Cumulative Total Returns Performance Graph for
   Cognex Corporation," and "Executive Compensation," appearing in the
   definitive Proxy Statement for the Special Meeting in Lieu of the 1999 Annual
   Meeting of Stockholders to be held on April 27, 1999. Such information is
   incorporated herein by reference.

   ITEM 12:  SECURITY OWNERSHIP AND CERTAIN BENEFICIAL OWNERS AND MANAGEMENT

        Information with respect to this item may be found in the sections
   captioned "Principal Holders of Voting Securities" and "Security Ownership of
   Directors and Officers," appearing in the definitive Proxy Statement for the
   Special Meeting in Lieu of the 1999 Annual Meeting of Stockholders to be held
   on April 27, 1999. Such information is incorporated herein by reference.

   ITEM 13:  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS

        None





                                       13







<PAGE>   16


                                     PART IV

   ITEM 14:  EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND REPORTS ON FORM 8-K

   (a)   (1)    Financial Statements
                The following consolidated financial statements of Cognex
                Corporation and the report of independent accountants relating
                thereto are included in the Company's Annual Report to
                Stockholders for the year ended December 31, 1998, which is
                Exhibit 13 hereto, and is incorporated herein by reference:
                
                   Report of Independent Accountants

                   Consolidated Statements of Income for the years ended
                      December 31, 1998, 1997, and 1996
                
                   Consolidated Balance Sheets at December 31, 1998 and 1997
                
                   Consolidated Statements of Stockholders' Equity for the years
                      ended December 31, 1998, 1997, and 1996
               
                   Consolidated Statements of Cash Flows for the years ended 
                      December 31, 1998, 1997, and 1996

                Notes to Consolidated Financial Statements

         (2)    Financial Statement Schedule
                Included at the end of this report are the following:
                   Report of Independent Accountants on the Financial Statement
                   Schedule
                   Schedule II - Valuation and Qualifying Accounts
                Other schedules are omitted because of the absence of conditions
                under which they are required or because the required
                information is given in the consolidated financial statements or
                notes thereto.
         (3)    Exhibits
                The Exhibits filed as part of this Annual Report on Form 10-K
                are listed in the Exhibit Index appearing on page 18,
                immediately preceding such Exhibits.

   (b)          Reports on Form 8-K
                There were no Reports on Form 8-K filed during the fourth
                quarter of the year ended December 31, 1998.







                                       14





<PAGE>   17


                                   SIGNATURES

        Pursuant to the requirements of Section 13 or 15(d) of the Securities
   Exchange Act of 1934, the registrant has duly caused this report to be signed
   on its behalf by the undersigned, thereunto duly authorized.

                              COGNEX CORPORATION

                              /s/ Robert J. Shillman
                              ----------------------
                              Robert J. Shillman
                              (President, Chief Executive Officer,
                              and Chairman of the Board of Directors)
                              March 26, 1999

        Pursuant to the requirements of the Securities Exchange Act of 1934,
   this report has been signed below by the following persons on behalf of the
   registrant and in the capacities and on the dates indicated.
<TABLE>
<CAPTION>

   Signature                              Title                                              Date
   ---------                              -----                                              ----
<S>                                       <C>                                                <C> 
   /s/ Robert J. Shillman                 President, Chief Executive Officer,                March 26, 1999
   -------------------------------        and Chairman of the Board of Directors                     
   Robert J. Shillman                     (principal executive and financial and
                                          accounting officer) 
                                          

   /s/ Jerald Fishman                     Director                                           March 26, 1999
   -------------------------------
   Jerald Fishman

   /s/ William Krivsky                    Director                                           March 26, 1999
   -------------------------------
   William Krivsky

   /s/ Anthony Sun                        Director                                           March 26, 1999
   -------------------------------
   Anthony Sun

   /s/ Rueben Wasserman                   Director                                           March 26, 1999
   -------------------------------
   Rueben Wasserman
</TABLE>





                                       15







<PAGE>   18


                        REPORT OF INDEPENDENT ACCOUNTANTS
                       ON THE FINANCIAL STATEMENT SCHEDULE


To the Board of Directors of Cognex Corporation:

        Our audits of the consolidated financial statements referred to in our
   report dated January 26, 1999 in the 1998 Annual Report to Stockholders of
   Cognex Corporation (which report and consolidated financial statements are
   incorporated by reference in this Annual Report on Form 10-K) also included
   an audit of the financial statement schedule listed in Item 14 (a)(2) of this
   Form 10-K. In our opinion, this financial statement schedule presents fairly,
   in all material respects, the information set forth therein when read in
   conjunction with the related consolidated financial statements.

                                                  /s/ PricewaterhouseCoopers LLP
Boston, Massachusetts
January 26, 1999






                                       16





<PAGE>   19


                                                                     SCHEDULE II

                               COGNEX CORPORATION
                        VALUATION AND QUALIFYING ACCOUNTS
                             (Dollars in thousands)
<TABLE>
<CAPTION>

                                                                   ADDITIONS
                                                           -------------------------
                                                                                            
                                               BALANCE AT   CHARGED TO   CHARGED TO                       BALANCE
   DESCRIPTION                                 BEGINNING    COSTS AND     OTHER                           AT END
                                               OF PERIOD    EXPENSES     ACCOUNTS       DEDUCTIONS       OF PERIOD
- ---------------------------------------------- ---------    --------     --------    -----------------   ---------

   Allowance for Doubtful Accounts
- ----------------------------------------------
     <S>                                         <C>         <C>                     <C>                 <C>      
     1998                                        $1,940      $ 1,245           -     $   (602)(a)        $   2,583
                                              
     1997                                           968        1,268           -         (296)(a)            1,940
                                              
     1996                                           709          542           -         (283)(a)              968
                                              

                                              
   Reserve for Inventory Obsolescence
- ----------------------------------------------
     1998                                        $1,873      $   992           -     $     (5)(b)        $   2,860
                                              
     1997                                         2,273          278                     (678)(b)            1,873
                                              
     1996                                           541        4,361           -       (2,629)(b)            2,273
                                              
   (a) Specific write-offs
   (b) Specific dispositions
</TABLE>

                                       17

<PAGE>   20


                                              EXHIBIT INDEX

        EXHIBIT
         NUMBER
        =======
            2   Agreement and Plan of Merger dated as of February 29, 1996 among
                Cognex Corporation, Cognex Software Development, Inc., Isys
                Controls, Inc., and Richard Rombach (incorporated by reference
                to Exhibit 2 to the Report on Form 8-K filed on March 15, 1996)
             
           3A   Articles of Organization of the Company effective January 8,
                1981, as amended June 8, 1982, August 19, 1983, May 15, 1984,
                April 17, 1985, November 4, 1986, and January 21, 1987
                (incorporated by reference to Exhibit 3A to the Registration
                Statement Form S-1 [Registration No. 33-29020])
         
           3B   Restated Articles of Organization of the Company effective June
                27, 1989, as amended April 30, 1991, April 21, 1992, April 25,
                1995, and April 23, 1996 (filed as Exhibit 3B to the Company's
                Annual Report of Form 10-K for the year ended December 31, 1996)
         
           3C   By-laws of the Company as amended February 9, 1990 (filed as
                Exhibit 3C to the Company's Annual Report on Form 10-K for the
                year ended December 31, 1990)
         
            4   Specimen Certificate for Shares of Common Stock (incorporated by
                reference to Exhibit 4 to the Registration Statement Form S-1
                [Registration No. 33-29020])
         
          10A   Cognex Corporation Employee Stock Purchase Plan (incorporated by
                reference to Exhibit 4A to Amendment No. 1 to the Registration
                Statement Form S-8 [Registration No. 33-32815])
         
          10B   Cognex Corporation 1992 Director Stock Option Plan (filed as
                Exhibit 10I to the Company's Annual Report on Form 10-K for the
                year ended December 31, 1992) Cognex Corporation 1993 Director
                Stock Option Plan (filed as Exhibit 10J to the Company's Annual
         
          10C   Cognex Corporation 1993 Director Stock Option Plan (filed as 
                Exhibit 10J to the Company's Annual Report on Form 10-K for the
                year ended December 31, 1993)
                 
          10D   Cognex Corporation 1993 Employee Stock Option Plan, as amended
                May 28, 1996 (incorporated by reference to Exhibit 4A to the
                Registration Form S-8 [Registration No. 333-4621])
         
          10E   Cognex Corporation 1996 Long-Term Incentive Plan (incorporated
                by reference to Exhibit 4A to the Registration Statement Form
                S-8 [Registration No. 333-2151])
         
          10F   Amendment to the Cognex Corporation 1993 Director Stock Option
                Plan (filed as Exhibit 10G to the Company's Annual Report on
                Form 10-K for the year ended December 31, 1997)
         
          10G   Amendment to the Cognex Corporation 1993 Employee Stock Option
                Plan (filed as Exhibit 10H to the Company's Annual Report on
                Form 10-K for the year ended December 31, 1997)
         
          10H   Cognex Corporation 1998 Non-Employee Director Stock Option Plan
                (incorporated by reference to Exhibit 4.1 to the Registration
                Form S-8 [Registration No. 333-60807])
         
          10I   Cognex Corporation 1998 Stock Incentive Plan (incorporated by
                reference to Exhibit 4.2 to the Registration Form S-8
                [Registration No. 333-60807])
         
           13   Annual Report to Stockholders for the year ended December 31,
                1998 (which is not deemed to be "filed" except to the extent
                that portions thereof are expressly incorporated by reference in
                this Annual Report on Form 10-K) *
          
           21   Subsidiaries of the registrant *
         
           23   Consent of PricewaterhouseCoopers LLP *
         
           27   Financial Data Schedule for the year ended December 31, 1998
                (electronic filing only) *

               * Filed herewith

                                       18

<PAGE>   1

                                                                    Exhibit 13

CHAPTER 7 ----------------------------------------------------------------------

FINANCIAL CONDITION

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

Summary
- --------------------------------------------------------------------------------
The Company's results in 1998 were impacted by a reduction in capital spending
by manufacturers in the semiconductor and electronics industries, resulting in a
22% decrease in revenue from 1997. The decrease in revenue is due primarily to
decreased volume of modular vision systems sold to Original Equipment
Manufacturer (OEM) customers serving these two industries. Sales to OEM
customers decreased 34% from 1997. Sales to end-user customers, however,
increased 6% over the prior year due primarily to increased volume from
customers in general manufacturing industries.

During 1998, the Company implemented certain cost-containment measures to align
expense levels to the lower revenue trend, while also maintaining its commitment
to new product development and end-user market penetration. This continued
investment during a period of lower revenue resulted in a 50% decrease in net
income from 1997. Despite this challenging business environment, the Company
achieved a 17% net income margin in 1998.

The Company's financial position remained strong at December 31, 1998, with $248
million in total assets and $223 million in stockholders' equity. Working
capital was $184 million at December 31, 1998, representing an 8% decrease from
the prior year, as the Company used $40 million in cash to repurchase its common
stock during 1998.

The following table sets forth certain consolidated financial data as a 
percentage of revenue:

- --------------------------------------------------------------------------------
Year Ended December 31,                             1998     1997    1996
- --------------------------------------------------------------------------------
REVENUE                                             100%     100%     100%
COST OF REVENUE                                      31       27       32
- --------------------------------------------------------------------------------
GROSS MARGIN                                         69       73       68
RESEARCH, DEVELOPMENT, AND ENGINEERING EXPENSES      20       14       16
SELLING, GENERAL, AND ADMINISTRATIVE EXPENSES        31       23       21
CHARGE FOR ACQUIRED IN-PROCESS TECHNOLOGY(1)          2        2
- --------------------------------------------------------------------------------
INCOME FROM OPERATIONS                               16       34       31
INVESTMENT AND OTHER INCOME                           6        4        5
- --------------------------------------------------------------------------------
INCOME BEFORE PROVISION FOR INCOME TAXES             22       38       36
PROVISION FOR INCOME TAXES                            5       12       11
- --------------------------------------------------------------------------------
NET INCOME                                           17%      26%     25%
================================================================================

(1) CHARGE FOR ACQUIRED IN-PROCESS TECHNOLOGY IS IN CONNECTION WITH THE
ACQUISITIONS OF CERTAIN TECHNOLOGIES FROM ALLEN-BRADLEY IN 1998 AND MAYAN
AUTOMATION, INC. IN 1997.
- --------------------------------------------------------------------------------


                                       12


<PAGE>   2


Results of Operations
- --------------------------------------------------------------------------------

Year Ended December 31, 1998 Compared to Year Ended December 31, 1997

Revenue for the year ended December 31, 1998 decreased 22% to $121,844,000 from
$155,340,000 for the year ended December 31, 1997. During 1998, the Company's
results were, and continue to be, impacted by a worldwide slowdown in capital
spending by manufacturers in the semiconductor and electronics industries, which
is an important source of revenue for the Company.

The decrease in revenue of $33,496,000, or 22%, from the prior year is due
primarily to decreased volume from the Company's OEM customers. Sales to OEM
customers, most of whom make capital equipment used by manufacturers in the
semiconductor and electronics industries, decreased $36,608,000, or 34%, from
the prior year.

Sales to end-user customers, however, increased $3,112,000, or 6%, from the
prior year due primarily to increased volume from customers in general
manufacturing industries, including sales of Fine-Line(a) products which the
Company acquired from Mayan Automation, Inc. in a purchase transaction on July
31, 1997. The increased end-user volume achieved from customers in general
manufacturing industries was partially offset by decreased volume to end-user
customers in the semiconductor and electronics industries. In recent years, the
Company has devoted additional sales and marketing resources to grow its
end-user customer base. As a result of these efforts, as well as the decline in
OEM revenue, end-user revenue grew to 43% of total revenue in 1998 from 32% of
total revenue in 1997.

Geographically, revenue decreased $13,982,000, or 23%, in North America and
$20,467,000, or 30%, in Japan from the prior year, as most of the Company's
large OEM customers are based in these regions. Revenue increased $3,095,000, or
14%, in Europe from the prior year due primarily to a large general
manufacturing customer base in this region, as well as increased volume to one
customer for a cellular telephone application in 1998.

The Company anticipates that its results for the next few quarters will continue
to be impacted by the worldwide slowdown in capital equipment spending. The
Company's customers continue to have limited visibility and a high level of
uncertainty as to the timing of a sustained business recovery. However, due to a
slight sequential improvement in revenue from the third quarter to the fourth
quarter of 1998 as well as a small increase in demand from a few large OEM
customers, the Company believes that it may have reached the bottom of this
industry cycle. Although the Company now expects sequential revenue growth
throughout 1999, it believes that this growth will be small to moderate during
at least the first half of the year.

Gross margin as a percentage of revenue for the year ended December 31, 1998 was
69% compared to 73% for the year ended December 31, 1997. The decrease in gross
margin as a percentage of revenue is due primarily to the lower product revenue
in 1998. As a result, service revenue, which has a lower gross margin than
product revenue, increased as a percentage of total revenue in 1998 and lowered
the overall gross margin. Gross margin as a percentage of revenue is expected to
increase slightly from the fourth quarter level of 66% during the next few
quarters due to the anticipated moderate revenue growth.

Research, development, and engineering expenses for the year ended December 31,
1998 increased 10% to $24,662,000 from $22,481,000 for the year ended December
31, 1997. The increase in aggregate expenses is due primarily to higher
personnel-related costs, as well as higher outside service costs, to support the
Company's continued investment in the research and development of new and
existing products. Expenses as a percentage of revenue were 20% in 1998 compared
to 14% in 1997. The increase in expenses as a percentage of revenue is due
primarily to the lower revenue base in 1998. Although the Company intends to
continue its product development efforts in 1999, the level of research,
development, and engineering expenses as a percentage of revenue over the next
few quarters is not expected to exceed the 24% experienced in the fourth quarter
of 1998.

Selling, general, and administrative expenses for the year ended December 31,
1998 increased 6% to $37,973,000 from $35,810,000 for the year ended December
31, 1997. The increase in aggregate expenses is due primarily to higher
personnel-related costs to support the Company's expanding worldwide 

- --------------------------------------------------------------------------------
                                       13                               COGNEX


<PAGE>   3


- --------------------------------------------------------------------------------
MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF
OPERATIONS (CONTINUED)

operations, as well as depreciation expense for an addition to the Company's
corporate headquarters and new computer information systems, both placed in
service in January 1998. These increases were partially offset by
cost-containment measures the Company implemented during the second half of 1998
which included the elimination of employee bonuses and a two-week mandatory
shutdown in December. Expenses as a percentage of revenue were 31% in 1998
compared to 23% in 1997. The increase in expenses as a percentage of revenue is
due primarily to the lower revenue base in 1998. Although the Company intends to
continue its efforts to further penetrate the end-user market in 1999, the level
of selling, general, and administrative expenses as a percentage of revenue over
the next few quarters is not expected to exceed the 39% experienced in the
fourth quarter of 1998.

In July 1998, the Company acquired certain technology of Rockwell Automation's
Allen-Bradley machine vision business. The acquired technology related to
certain products under development. The technology was valued using a
risk-adjusted cash flow model, under which future cash flows were discounted
taking into account risks related to existing markets, the technology's life
expectancy, future target markets and potential changes thereto, and the
competitive outlook for the technology. This analysis resulted in an allocation
of $2,100,000 to in-process technology which had not reached technological
feasibility and had no alternative future use, and accordingly, was expensed
immediately.

The Company expects to incur additional costs to complete and integrate the
technology to the Company's product standards. These expenditures will be
completed in 1999 with anticipated funding from cash generated from operations
and are not expected to significantly impact the planned level of research and
development expenditures.

Investment income for the year ended December 31, 1998 increased 14% to
$6,756,000 from $5,947,000 for the year ended December 31, 1997. The increase in
investment income is due primarily to a higher average invested cash balance in
1998.

Other income for the year ended December 31, 1998 increased 2% to $733,000 from
$718,000 for the year ended December 31, 1997. Other income consists primarily
of rental income, net of related expenses, from leasing the building adjacent to
the Company's corporate headquarters.

The Company's effective tax rate for the year ended December 31, 1998 was 26%
compared to 30.5% for the year ended December 31, 1997. The decrease in the
effective tax rate is due primarily to the impact of the Company's use of
tax-free investments and the Company's lower profitability in 1998.

Year Ended December 31, 1997 Compared to Year Ended December 31, 1996

The acquisition on July 31, 1997 of Mayan Automation, Inc. (Mayan), a developer
of low-cost machine vision systems used for surface inspection, was accounted
for under the purchase method of accounting. The results of operations of Mayan
since the acquisition date are included in the Company's results.

Revenue for the year ended December 31, 1997 increased 26% to $155,340,000 from
$122,843,000 for the year ended December 31, 1996. This increase in revenue over
the prior year represents a recovery from the slowdown in the semiconductor and
electronics industries which had previously impacted the Company's business. The
increase is due primarily to increased volume from OEM customers serving these
two industries. Sales to OEM customers increased $26,221,000, or 33%, over 1996,
and grew to 68% of revenue in 1997 from 65% of revenue in 1996. Additionally,
sales to end-user customers increased $6,276,000, or 15%, over 1996 due
primarily to increased volume resulting from additional sales and marketing
resources serving customers in this market, as well as the addition of Fine-Line
products from the acquisition of Mayan in the third quarter of 1997.

                                       14


<PAGE>   4


Gross margin as a percentage of revenue for the year ended December 31, 1997 was
73% compared to 68% for 1996. Gross margin for 1996 included a $4,231,000
inventory charge to "Cost of Revenue," which reduced the margin by approximately
four percentage points. The charge reflected costs associated with excess
inventories resulting from product transition plans, as well as reduced
production plans caused by the slowdown in the semiconductor and electronics
industries. Excluding the 1996 inventory charge, the slight improvement in gross
margin as a percentage of revenue is due primarily to the Company's ability to
significantly increase the number of machine vision systems manufactured with
only small increases in manufacturing overhead expenses, thereby improving the
absorption rate of overhead expenses.

Research, development, and engineering expenses for the year ended December 31,
1997 increased 16% to $22,481,000 from $19,434,000 for the year ended December
31, 1996. The increase in aggregate expenses is due primarily to higher
personnel-related costs to support the Company's continued investment in the
research and development of new and existing products. Expenses as a percentage
of revenue were 14% in 1997 compared to 16% in 1996. The decrease in expenses as
a percentage of revenue results from demand from OEM customers increasing
revenue at a rate that outpaced the increase in expenses associated with the
addition of new engineers.

Selling, general, and administrative expenses for the year ended December 31,
1997 increased 36% to $35,810,000 from $26,261,000 for the year ended December
31, 1996. The increase in aggregate expenses is due primarily to higher
personnel-related costs, both domestically and internationally, to support the
Company's worldwide operations, as well as the reinstatement of company bonuses,
which were eliminated as part of an effort to control costs during 1996 in light
of the temporary downturn in the semiconductor and electronics industries.
Expenses as a percentage of revenue were 23% in 1997 compared to 21% in 1996.

Investment income for the year ended December 31, 1997 increased 26% to
$5,947,000 from $4,726,000 for the year ended December 31, 1996. The increase in
investment income is due primarily to an increase in the Company's invested cash
balance during 1997.

Other income for the year ended December 31, 1997 totaled $718,000 and remained
fairly consistent with other income of $678,000 in 1996. Other income consists
primarily of rental income, net of related expenses, from leasing the building
adjacent to the Company's corporate headquarters.

The Company's effective tax rate was 30.5% for each of the years ended December
31, 1997 and 1996.

Liquidity and Capital Resources
- --------------------------------------------------------------------------------

The Company's cash requirements during the year ended December 31, 1998 were met
through cash generated from operations along with existing cash and investments
balances. Cash and investments decreased $19,556,000 from December 31, 1997
primarily as a result of $39,867,000 of cash used to repurchase the Company's
common stock and $7,239,000 of capital expenditures, partially offset by
$29,670,000 of cash generated from operations.

Capital expenditures for the year ended December 31, 1998 totaled $7,239,000 and
consisted primarily of expenditures for computer hardware and software, as well
as expenditures for furniture and fixtures primarily related to the occupancy of
an addition to the Company's corporate headquarters, and expenditures for
leasehold improvements related to a new office in Japan.

As discussed in the Notes to Consolidated Financial Statements, at December 31,
1998, the Company had unconditional obligations to purchase $3,670,000 of
inventory from third-party contractors within 60 days.

On April 21, 1998, the Company's Board of Directors authorized the repurchase of
up to $20,000,000 of the Company's common stock. A total of 882,000 shares were
repurchased through May 27, 1998 amounting to $19,937,000 which completed the
Company's stock repurchases under this program. On June 3, 1998, the Board
authorized the repurchase of up to an additional 1,500,000 shares of the
Company's common stock. As of December 31, 1998, 1,320,000 shares have been
repurchased under this second program amounting to 

- --------------------------------------------------------------------------------
                                       15                               COGNEX


<PAGE>   5


- --------------------------------------------------------------------------------
MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF
OPERATIONS (CONTINUED)

$19,930,000. Funds for the stock repurchases came from the Company's existing
cash and investments balance along with cash generated from operations.

The Company believes that its existing cash and investments balance, together
with cash generated from operations, will be sufficient to meet the Company's
planned working capital and capital expenditure requirements through 1999,
including potential business acquisitions.

On June 15, 1998, the Financial Accounting Standards Board (FASB) issued
Statement of Financial Accounting Standards (SFAS) No. 133, "Accounting for
Derivative Instruments and Hedging Activities." SFAS No. 133 is effective for
all fiscal quarters of all fiscal years beginning after June 15, 1999. SFAS No.
133 requires that all derivative instruments be recorded on the balance sheet at
their fair value. Changes in the fair value of derivatives are recorded each
period in current earnings or other comprehensive income, depending on whether a
derivative is designated as part of a hedge transaction and, if it is, the type
of hedge transaction. The Company anticipates that, due to its limited use of
derivative instruments, the adoption of SFAS No. 133 will not have a material
impact on the Company's results of operations or financial position.

On January 1, 1999, eleven of the fifteen member countries of the European Union
established fixed conversion rates between their existing sovereign currencies
and the euro, making the euro their common legal currency on that date. Based on
a recent assessment, the euro conversion is not anticipated to have a material
impact on the Company's business.

Year 2000 Update
- --------------------------------------------------------------------------------

The Company is aware of the potential for industry-wide business disruption
which could occur due to problems related to the "Year 2000" issue. Management
believes that it has a prudent plan in place to address this issue within the
Company and its supply chain. The components of this plan include: an assessment
of internal systems for modification and/or replacement; communication with
external vendors to determine their state of readiness to maintain an
uninterrupted supply of goods and services to the Company; and an evaluation of
products sold by the Company to customers as to the ability of the products to
work properly after the turn of the century.

Internal Systems

The Company's process for achieving Year 2000 compliance for internal systems is
as follows:

1.   Develop an inventory of all internal systems
2.   Determine the Year 2000 compliance status of each internal system
3.   Prioritize the importance of Year 2000 compliance for each internal system
4.   Determine the method to be used to achieve compliance (modify, replace,
     cease use)
5.   Complete the planned action
6.   Test the system

The initial inventory, compliance status, and prioritization of all internal
systems in use throughout the Company have been completed. The Company has
identified five internal systems that are used for business transaction
processing as being critical to the uninterrupted operation of the business. Of
these five systems, the Company's initial assessment indicates that three are
Year 2000 compliant. The Company is on schedule to have the remaining two
systems Year 2000 compliant by June 30, 1999 through vendor-provided upgrades.
In addition, the Company has completed an initial assessment of its technology
infrastructure (servers, networks, phone systems) and expects to have all
non-compliant items remediated, replaced, or decommissioned by June 30, 1999.


                                       16


<PAGE>   6


Vendors

The Company has initiated a program to survey the Year 2000 readiness of its
major vendors. The Company has sent letters to over 250 vendors outlining its
approach towards the Year 2000 issue and asking for either their certification
that their product is Year 2000 compliant or their commitment to resolve any
issues they may have. The Company has identified vendors it views as critical to
its business. Management has defined a critical vendor as one whose inability to
continue to provide goods and services would have a serious adverse impact on
the Company's ability to produce, deliver, and collect payment for its product.
To date, the Company has received responses from all critical vendors with the
exception of two. These two vendors have been contacted by the senior management
member responsible for the business relationship and have been requested to
respond to the Company's Year 2000 letter.

Products

Product testing is now complete and has confirmed that Cognex's core vision
functionality is not date sensitive or dependent on dates in any way, and is
therefore Year 2000 compliant. The Company's Year 2000 product compliance
verification methodology consisted of a review of the source code and functional
testing of the recent releases of Cognex products, which are believed to be
representative of earlier releases as well. Year 2000 compliance verification
included examination of the 1999/2000 date rollover, date sensitive
functionality with the year 2000, and leap year compliance.

Costs

Costs incurred in the Company's Year 2000 compliance effort are expensed as
incurred and funded with cash generated from operations. These costs are
included in the normal, recurring costs incurred for product development and
systems maintenance and are not material to the Company's results of operations,
nor are they expected to be in the future.

Risks and Contingency Plan

Although the Company believes it is taking prudent action related to the
identification and resolution of issues related to the Year 2000, its assessment
is still in progress. It may never be able to know with certainty whether
certain critical vendors are compliant. Failure of critical vendors to make
their computer systems Year 2000 compliant could result in delaying deliveries
of products and services to the Company. If such delays are extensive, they
could have a material adverse effect on the Company's business.

The failure to correct a material Year 2000 problem could result in an
interruption in, or a failure of, certain normal business activities. Such
failures could materially and adversely affect the Company's results of
operations, liquidity, and financial condition. Due to the general uncertainty
inherent in the Year 2000 issue, resulting in part from the uncertainty of the
Year 2000 readiness of third-party vendors, the Company is unable to determine
at this time whether the consequences of Year 2000 failures will have a material
impact on the Company's results of operations, liquidity, or financial position.
The Year 2000 compliance project is expected to reduce, but not eliminate, the
Company's level of uncertainty about the Year 2000 issue and, in particular,
about the Year 2000 compliance and readiness of its critical vendors. The
Company believes that, with the completion of the Year 2000 compliance project
as scheduled, the possibility of significant interruptions to normal operations
should be reduced.

The Company continues to evaluate the risks associated with potential Year 2000
related failures. As management better understands the risks within the
Company's unique set of internal systems, business partners, and products, a
formal contingency plan to alleviate the impact of high potential or serious
failures will be developed. The Company anticipates having this contingency plan
outlined by June 30, 1999. The components of this plan will likely include raw
material and finished goods inventory levels, alternative vendors, and backup
systems. Until the contingency plan is completed, the Company 

- --------------------------------------------------------------------------------
                                       17                               COGNEX


<PAGE>   7


- --------------------------------------------------------------------------------
MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF
OPERATIONS (CONTINUED)

does not possess the information necessary to estimate the potential negative
impact of Year 2000 compliance issues related to internal systems, its vendors,
its customers, or other parties.

Forward-Looking Statements
- --------------------------------------------------------------------------------

Certain statements made in this report (including statements regarding the Year
2000 issue), as well as oral statements made by the Company from time to time,
which are prefaced with words such as "expects," "anticipates," "believes,"
"projects," "intends," "plans," and similar words and other statements of
similar sense, are forward-looking statements. These statements are based on the
Company's current expectations and estimates as to prospective events and
circumstances, which may or may not be in the Company's control and as to which
there can be no firm assurances given. These forward-looking statements, like
any other forward-looking statements, involve risks and uncertainties that could
cause actual results to differ materially from those projected or anticipated.
Such risks and uncertainties include: (1) the loss of, or a significant
curtailment of purchases by, any one or more principal customers; (2) the
cyclicality of the semiconductor and electronics industries; (3) the Company's
continued ability to achieve significant international revenue; (4) capital
spending trends by manufacturing companies; (5) inability to protect the
Company's proprietary technology and intellectual property; (6) inability to
attract or retain skilled employees; (7) technological obsolescence of current
products and the inability to develop new products; (8) inability to respond to
competitive technology and pricing pressures; and (9) reliance upon certain sole
source suppliers to manufacture or deliver critical components of the Company's
products. The foregoing list should not be construed as exhaustive and the
Company disclaims any obligation subsequently to revise forward-looking
statements to reflect events or circumstances after the date of such statements
or to reflect the occurrence of anticipated or unanticipated events. Further
discussions of risk factors are also available in the Company's registration
statements filed with the Securities and Exchange Commission. The Company wishes
to caution readers not to place undue reliance upon any such forward-looking
statements, which speak only as of the date made.


                                       18


<PAGE>   8


- --------------------------------------------------------------------------------
COGNEX CORPORATION -
FIVE-YEAR SUMMARY OF SELECTED FINANCIAL DATA

<TABLE>
<CAPTION>

Year Ended December 31,                         1998      1997      1996(1)(2)  1995     1994
- ----------------------------------------------------------------------------------------------
<S>                                          <C>       <C>       <C>         <C>       <C>    
(IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
STATEMENT OF INCOME DATA:
  REVENUE                                    $121,844  $155,340  $122,843    $104,543  $62,484
  COST OF REVENUE                              37,296    42,273    38,855      22,543   13,884
- ----------------------------------------------------------------------------------------------
  GROSS MARGIN                                 84,548   113,067    83,988      82,000   48,600
  RESEARCH, DEVELOPMENT, AND ENGINEERING
   EXPENSES                                    24,662    22,481    19,434      13,190    9,933
  SELLING, GENERAL, AND ADMINISTRATIVE
   EXPENSES                                    37,973    35,810    26,261      23,973   16,847
  CHARGE FOR ACQUIRED IN-PROCESS TECHNOLOGY     2,100     3,115                10,189
- ----------------------------------------------------------------------------------------------
  INCOME FROM OPERATIONS                       19,813    51,661    38,293      34,648   21,820
  INVESTMENT AND OTHER INCOME                   7,489     6,665     5,404       2,965    1,462
- ----------------------------------------------------------------------------------------------
  INCOME BEFORE PROVISION FOR INCOME TAXES     27,302    58,326    43,697      37,613   23,282
  PROVISION FOR INCOME TAXES                    7,099    17,790    13,328      14,579    7,210
- ----------------------------------------------------------------------------------------------
  NET INCOME                                 $ 20,203  $ 40,536  $ 30,369    $ 23,034  $16,072
==============================================================================================
  BASIC NET INCOME PER SHARE (3)             $    .49  $    .98  $    .75    $    .60  $   .47
==============================================================================================
  DILUTED NET INCOME PER SHARE (3)           $    .47  $    .91  $    .69    $    .55  $   .43
==============================================================================================
  BASIC WEIGHTED-AVERAGE COMMON SHARES
   OUTSTANDING (3)                             40,978    41,322    40,594      38,175   34,560
==============================================================================================
DILUTED WEIGHTED-AVERAGE COMMON SHARES
   OUTSTANDING (3)                             43,203    44,702    43,814      41,952   37,150
==============================================================================================
</TABLE>

<TABLE>
<CAPTION>

- -----------------------------------------------------------------------------------------------
  December 31,                                  1998      1997     1996         1995      1994
- -----------------------------------------------------------------------------------------------
(IN THOUSANDS)
<S>                                          <C>       <C>       <C>         <C>       <C>     
BALANCE SHEET DATA:
 WORKING CAPITAL                             $184,363  $199,570  $152,817    $119,402  $ 88,619
 TOTAL ASSETS                                 247,928   261,840   201,253     162,172   112,946
 LONG-TERM DEBT                                     -        -          -           -         -
 STOCKHOLDERS' EQUITY                         222,875   236,142   182,689     143,916   103,608

</TABLE>

(1)  1996 RESULTS INCLUDE THE FULL YEAR RESULTS OF ISYS CONTROLS, INC. (ISYS), A
     DEVELOPER OF MACHINE VISION SYSTEMS FOR HIGH-SPEED SURFACE INSPECTION
     ACQUIRED IN FEBRUARY 1996. THE ISYS ACQUISITION WAS ACCOUNTED FOR AS A
     POOLING OF INTERESTS; HOWEVER, BECAUSE THE RESULTS OF ISYS FOR PRIOR YEARS
     WERE NOT MATERIAL TO THE COMPANY'S PREVIOUSLY REPORTED RESULTS, PRIOR YEARS
     HAVE NOT BEEN RESTATED.

(2)  COST OF REVENUE INCLUDES A $4,231,000 INVENTORY CHARGE FOR COSTS ASSOCIATED
     WITH EXCESS INVENTORIES RESULTING FROM PRODUCT TRANSITION PLANS, AS WELL AS
     REDUCED PRODUCTION PLANS.

(3)  ADJUSTED FOR THE 2-FOR-1 STOCK SPLIT EFFECTIVE DECEMBER 18, 1995.

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

- --------------------------------------------------------------------------------
                                      19                                COGNEX


<PAGE>   9


- --------------------------------------------------------------------------------
COGNEX CORPORATION -
CONSOLIDATED STATEMENTS OF INCOME

<TABLE>
<CAPTION>

- --------------------------------------------------------------------------------
YEAR ENDED DECEMBER 31,                              1998      1997      1996
- --------------------------------------------------------------------------------
 (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
<S>                                              <C>        <C>       <C> 
 REVENUE                                          $121,844  $155,340  $122,843
 COST OF REVENUE                                    37,296    42,273    38,855
- --------------------------------------------------------------------------------
 GROSS MARGIN                                       84,548   113,067    83,988
 RESEARCH, DEVELOPMENT, AND ENGINEERING EXPENSES    24,662    22,481    19,434
 SELLING, GENERAL, AND ADMINISTRATIVE EXPENSES      37,973    35,810    26,261
 CHARGE FOR ACQUIRED IN-PROCESS TECHNOLOGY           2,100     3,115
- --------------------------------------------------------------------------------
 INCOME FROM OPERATIONS                             19,813    51,661    38,293
 INVESTMENT INCOME                                   6,756     5,947     4,726
 OTHER INCOME                                          733       718       678
- --------------------------------------------------------------------------------
 INCOME BEFORE PROVISION FOR INCOME TAXES           27,302    58,326    43,697
 PROVISION FOR INCOME TAXES                          7,099    17,790    13,328
- --------------------------------------------------------------------------------
 NET INCOME                                        $20,203   $40,536   $30,369
================================================================================

 NET INCOME PER COMMON AND COMMON 
 EQUIVALENT SHARE:
  BASIC                                            $   .49   $   .98   $   .75
================================================================================
  DILUTED                                          $   .47   $   .91   $   .69
================================================================================


 WEIGHTED-AVERAGE COMMON AND COMMON 
  EQUIVALENT SHARES OUTSTANDING:
   BASIC                                            40,978    41,322    40,594
================================================================================
   DILUTED                                          43,203    44,702    43,814
================================================================================
</TABLE>
THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL
STATEMENTS.

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



                                       20


<PAGE>   10


- --------------------------------------------------------------------------------
COGNEX CORPORATION -
CONSOLIDATED BALANCE SHEETS

- --------------------------------------------------------------------------------
DECEMBER 31,                                                   1998       1997
- --------------------------------------------------------------------------------
(IN THOUSANDS)
ASSETS
CURRENT ASSETS:
 CASH AND INVESTMENTS                                          $158,458 $178,014
 ACCOUNTS RECEIVABLE, LESS RESERVES OF $2,583 AND $1,940
  IN 1998 AND 1997, RESPECTIVELY                                 20,987   25,095
 REVENUE IN EXCESS OF BILLINGS                                    4,945    3,723
 INVENTORIES                                                     10,812    7,784
 DEFERRED INCOME TAXES                                            3,936    3,453
 PREPAID EXPENSES AND OTHER                                       8,141    5,937
- --------------------------------------------------------------------------------
   TOTAL CURRENT ASSETS                                         207,279  224,006
================================================================================
PROPERTY, PLANT, AND EQUIPMENT, NET                              34,255   32,995
DEFERRED INCOME TAXES                                             2,237    1,377
OTHER ASSETS                                                      4,157    3,462
- --------------------------------------------------------------------------------
                                                               $247,928 $261,840
================================================================================

LIABILITIES AND STOCKHOLDERS' EQUITY
CURRENT LIABILITIES:
 ACCOUNTS PAYABLE                                              $  2,488 $  3,332
 ACCRUED EXPENSES                                                11,653   13,712
 ACCRUED INCOME TAXES                                               916    2,684
 CUSTOMER DEPOSITS                                                4,894    3,112
 DEFERRED REVENUE                                                 2,965    1,596
- --------------------------------------------------------------------------------
   TOTAL CURRENT LIABILITIES                                     22,916   24,436
- --------------------------------------------------------------------------------
OTHER LIABILITIES                                                 2,137    1,262
COMMITMENTS (SEE NOTES TO CONSOLIDATED FINANCIAL STATEMENTS)
STOCKHOLDERS' EQUITY:
 COMMON STOCK, $.002 PAR VALUE-
  AUTHORIZED: 120,000,000 SHARES, ISSUED: 42,453,980 AND
  41,859,395 SHARES IN 1998 AND 1997, RESPECTIVELY                   85       84
 ADDITIONAL PAID-IN CAPITAL                                      97,531   91,082
 TREASURY STOCK, AT COST, 2,307,140 AND 103,139 SHARES IN 1998
    AND 1997, RESPECTIVELY                                      (41,353) (1,436)
 RETAINED EARNINGS                                              166,571  146,368
 ACCUMULATED OTHER COMPREHENSIVE INCOME                              41       44
- --------------------------------------------------------------------------------
  TOTAL STOCKHOLDERS' EQUITY                                    222,875  236,142
- --------------------------------------------------------------------------------
                                                               $247,928 $261,840
================================================================================

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL
STATEMENTS.

================================================================================
                                       21                               COGNEX
<PAGE>   11
- --------------------------------------------------------------------------------

COGNEX CORPORATION - CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY

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

<TABLE>
<CAPTION>
                                                                        COMMON STOCK         ADDITIONAL          TREASURY STOCK     
                                                                    ---------------------      PAID-IN        -------------------   
(DOLLARS IN THOUSANDS)                                              SHARES      PAR VALUE      CAPITAL        SHARES         COST   
- ------------------------------------------------------------------------------------------------------------------------------------
<S>                                                               <C>               <C>        <C>            <C>         <C>       
BALANCE AT DECEMBER 31, 1995                                      39,039,675        $78        $71,171        80,918      $   (889) 
  COMMON STOCK ISSUED TO ACQUIRE                                                                                                    
   ISYS CONTROLS, INC                                              1,331,927          3          2,469                              
  ISSUANCE OF STOCK UNDER STOCK OPTION,                                                                                             
   STOCK PURCHASE, AND BONUS PLANS                                   542,564          1          2,495                              
  TAX BENEFIT FROM EXERCISE OF STOCK                                                                                                
   OPTIONS                                                                                       1,434                              
  COMPREHENSIVE INCOME:                                                                                                             
   NET INCOME                                                                                                                       
   TRANSLATION ADJUSTMENT                                                                                                           
   COMPREHENSIVE INCOME                                                                                                             
                                                                                                                                    
                                                                  ------------------------------------------------------------------
BALANCE AT DECEMBER 31, 1996                                      40,914,166         82         77,569        80,918          (889) 
                                                                  ==================================================================
  ISSUANCE OF STOCK UNDER STOCK OPTION,                                                                                             
   STOCK PURCHASE, AND BONUS PLANS                                   945,229          2          5,504                              
  TAX BENEFIT FROM EXERCISE OF STOCK                                                                                                
   OPTIONS                                                                                       8,009                              
  COMMON STOCK RECEIVED FOR PAYMENT                                                                                                 
   OF STOCK OPTION EXERCISES                                                                                  22,221          (547) 
  COMPREHENSIVE INCOME:                                                                                                             
   NET INCOME                                                                                                                       
   TRANSLATION ADJUSTMENT                                                                                                           
   COMPREHENSIVE INCOME                                                                                                             
                                                                  ------------------------------------------------------------------
BALANCE AT DECEMBER 31, 1997                                      41,859,395         84         91,082       103,139        (1,436) 
                                                                  ==================================================================
  ISSUANCE OF STOCK UNDER STOCK OPTION,                                                                                             
   STOCK PURCHASE, AND BONUS PLANS                                   594,585          1          4,385                              
  TAX BENEFIT FROM EXERCISE OF STOCK                                                                                                
   OPTIONS                                                                                       2,064                              
  COMMON STOCK RECEIVED FOR PAYMENT                                                                                                 
   OF STOCK OPTION EXERCISES                                                                                   2,001           (50) 
  REPURCHASE OF COMMON STOCK                                                                               2,202,000       (39,867) 
  COMPREHENSIVE INCOME:                                                                                                             
   NET INCOME                                                                                                                       
   TRANSLATION ADJUSTMENT                                                                                                           
   COMPREHENSIVE INCOME                                                                                                             
                                                                  ------------------------------------------------------------------
BALANCE AT DECEMBER 31, 1998                                      42,453,980        $85        $97,531     2,307,140      $(41,353) 
                                                                  ==================================================================
</TABLE>
<TABLE>
<CAPTION>
                                                                                                  
                                                                                ACCUMULATED                       
                                                                                   OTHER                              TOTAL    
                                                                  RETAINED     COMPREHENSIVE    COMPREHENSIVE     STOCKHOLDERS'
(DOLLARS IN THOUSANDS)                                            EARNINGS         INCOME          INCOME            EQUITY
- -------------------------------------------------------------------------------------------------------------------------------
<S>                                                                 <C>           <C>                               <C>     
BALANCE AT DECEMBER 31, 1995                                        73,516        $     40                          $143,916
  COMMON STOCK ISSUED TO ACQUIRE                                                                                
   ISYS CONTROLS, INC                                                1,947                                             4,419
  ISSUANCE OF STOCK UNDER STOCK OPTION,                                                                         
   STOCK PURCHASE, AND BONUS PLANS                                                                                     2,496
  TAX BENEFIT FROM EXERCISE OF STOCK                                                                            
   OPTIONS                                                                                                             1,434
  COMPREHENSIVE INCOME:                                                                                         
   NET INCOME                                                       30,369                           $30,369          30,369
   TRANSLATION ADJUSTMENT                                                               55                55              55
                                                                                                 -----------
   COMPREHENSIVE INCOME                                                                               30,424                 
                                                                  -------------------------------===========----------------
BALANCE AT DECEMBER 31, 1996                                       105,832              95                           182,689
                                                                  ===============================           ================
  ISSUANCE OF STOCK UNDER STOCK OPTION,                                                                         
   STOCK PURCHASE, AND BONUS PLANS                                                                                     5,506
  TAX BENEFIT FROM EXERCISE OF STOCK                                                                            
   OPTIONS                                                                                                             8,009
  COMMON STOCK RECEIVED FOR PAYMENT                                                                             
   OF STOCK OPTION EXERCISES                                                                                            (547)
  COMPREHENSIVE INCOME:                                                                                         
   NET INCOME                                                       40,536                            40,536          40,536
   TRANSLATION ADJUSTMENT                                                              (51)              (51)            (51)
                                                                                                 -----------
   COMPREHENSIVE INCOME                                                                               40,485      
                                                                  -------------------------------===========----------------
BALANCE AT DECEMBER 31, 1997                                       146,368              44                           236,142
                                                                  ===============================           ================
  ISSUANCE OF STOCK UNDER STOCK OPTION,                                                                         
   STOCK PURCHASE, AND BONUS PLANS                                                                                     4,386
  TAX BENEFIT FROM EXERCISE OF STOCK                                                                            
   OPTIONS                                                                                                             2,064
  COMMON STOCK RECEIVED FOR PAYMENT                                                                             
   OF STOCK OPTION EXERCISES                                                                                             (50)
  REPURCHASE OF COMMON STOCK                                                                                         (39,867)
  COMPREHENSIVE INCOME:                                                                                         
   NET INCOME                                                       20,203                            20,203          20,203
   TRANSLATION ADJUSTMENT                                                               (3)               (3)             (3)
                                                                                                 -----------
   COMPREHENSIVE INCOME                                                                              $20,200      
                                                                  -------------------------------===========----------------
BALANCE AT DECEMBER 31, 1998                                      $166,571             $41                          $222,875
                                                                  ===============================           ================
                                                                                                              
</TABLE>
THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL
STATEMENTS.

                                       22

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

<PAGE>   12

- --------------------------------------------------------------------------------
COGNEX CORPORATION --
CONSOLIDATED STATEMENTS OF CASH FLOWS

<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------
Year Ended December 31,                                                           1998            1997            1996
- ------------------------------------------------------------------------------------------------------------------------
(IN THOUSANDS)
<S>                                                                             <C>             <C>             <C>     
CASH FLOWS FROM OPERATING ACTIVITIES:
         NET INCOME                                                             $ 20,203        $ 40,536        $ 30,369
         ADJUSTMENTS TO RECONCILE NET INCOME TO NET CASH
                  PROVIDED BY OPERATING ACTIVITIES:
                           DEPRECIATION OF PROPERTY, PLANT, AND EQUIPMENT          6,393           4,870           4,352
                           AMORTIZATION OF INTANGIBLE ASSETS                         796             938             735
                           AMORTIZATION OF INVESTMENTS                             1,525           1,399           1,426
                           TAX BENEFIT FROM EXERCISE OF STOCK OPTIONS              2,064           8,009           1,434
                           CHARGE FOR ACQUIRED IN-PROCESS TECHNOLOGY               2,100           3,115
                           INVENTORY PROVISION                                                                     4,231
                           DEFERRED INCOME TAX PROVISION                          (1,343)         (2,581)           (385)
         CHANGES IN OTHER CURRENT ASSETS AND CURRENT LIABILITIES:
                  ACCOUNTS RECEIVABLE                                              5,052          (6,603)          6,276
                  INVENTORIES                                                     (3,627)           (920)          2,523
                  ACCOUNTS PAYABLE                                                  (902)           (421)            519
                  OTHER CURRENT ASSETS AND CURRENT LIABILITIES                    (3,498)          5,080             956
         OTHER OPERATING ACTIVITIES                                                  907             314              28
- ------------------------------------------------------------------------------------------------------------------------
         NET CASH PROVIDED BY OPERATING ACTIVITIES                                29,670          53,736          52,464
- ------------------------------------------------------------------------------------------------------------------------
CASH FLOWS FROM INVESTING ACTIVITIES:
         PURCHASE OF INVESTMENTS                                                 (81,616)        (94,581)        (63,067)
         MATURITY OF INVESTMENTS                                                  89,256          38,943          42,793
         PURCHASE OF PROPERTY, PLANT, AND EQUIPMENT                               (7,239)        (10,852)        (10,154)
         CASH PAID FOR TECHNOLOGY ACQUISITIONS,
                  NET OF CASH ASSUMED, AND EQUITY INVESTMENTS                     (3,954)         (2,999)           (359)
- ------------------------------------------------------------------------------------------------------------------------
         NET CASH USED IN INVESTING ACTIVITIES                                    (3,553)        (69,489)        (30,787)
- ------------------------------------------------------------------------------------------------------------------------

CASH FLOWS FROM FINANCING ACTIVITIES:
         ISSUANCE OF STOCK UNDER STOCK OPTION,
                  STOCK PURCHASE, AND BONUS PLANS                                  4,336           4,959           2,496
         REPURCHASE OF COMMON STOCK                                              (39,867)
- ------------------------------------------------------------------------------------------------------------------------
         NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES                     (35,531)          4,959           2,496
- ------------------------------------------------------------------------------------------------------------------------
EFFECT OF EXCHANGE RATE CHANGES ON CASH                                             (977)            569             339
- ------------------------------------------------------------------------------------------------------------------------
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS                             (10,391)        (10,225)         24,512
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR                                    38,198          48,423          23,911
- ------------------------------------------------------------------------------------------------------------------------
CASH AND CASH EQUIVALENTS AT END OF YEAR                                          27,807          38,198          48,423
INVESTMENTS                                                                      130,651         139,816          85,577
- ------------------------------------------------------------------------------------------------------------------------
CASH AND INVESTMENTS                                                            $158,458        $178,014        $134,000
========================================================================================================================
</TABLE>

THE ACCOMPANYING NOTES ARE AN INTEGRAL PART OF THESE CONSOLIDATED FINANCIAL
STATEMENTS.

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


                                       23
<PAGE>   13

- --------------------------------------------------------------------------------
COGNEX CORPORATION -
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
- --------------------------------------------------------------------------------

The accompanying consolidated financial statements reflect the application of
certain accounting policies described below.

Nature of Operations

Cognex Corporation (the Company) designs, develops, and markets machine vision
systems, or computers that can "see." The Company's products are used to
automate a wide range of manufacturing processes where vision is required.

Use of Estimates in the Preparation of Financial Statements

The preparation of financial statements in conformity with generally accepted
accounting principles requires management to make estimates and assumptions that
affect the reported amounts of assets and liabilities at the balance sheet date
and the reported amounts of revenues and expenses during the year. Actual
results could differ from those estimates.

Basis of Consolidation

The consolidated financial statements include the accounts of Cognex Corporation
and its subsidiaries, all of which are wholly-owned. All intercompany accounts
and transactions have been eliminated. Certain amounts reported in prior years
have been reclassified to be consistent with the current year presentation.

Foreign Currency

The financial statements of the Company's foreign subsidiaries, where the local
currency is the functional currency, are translated using exchange rates in
effect at the end of the year for assets and liabilities and average exchange
rates during the year for results of operations. The resulting foreign currency
translation adjustments are reported as a separate component of stockholders'
equity.

Cash and Investments

Cash and investments include cash equivalents, which the Company considers to be
all investments purchased with original maturities of three months or less.
Investments having original maturities in excess of three months are stated at
amortized cost, which approximates fair value, and are classified as
available-for-sale. The Company considers all of its investments to be available
for current operations and maintains its investments in securities which are
highly liquid and would not result in significant losses if sold prior to
maturity.

Inventories

Inventories are stated at the lower of cost or market. Cost is determined on the
first-in, first-out basis.

Property, Plant, and Equipment

Property, plant, and equipment are stated at cost and depreciated using the
straight-line method over the assets' estimated useful lives. Buildings' useful
lives are 39 years, building improvements' useful lives are 10 years, and the
useful lives of computer hardware, computer software, and furniture and fixtures
range from two to seven years. Leasehold improvements are depreciated over the
shorter of the estimated useful lives or the remaining terms of the leases.
Maintenance and repairs are expensed when incurred; additions and improvements
are capitalized. Upon retirement or disposition, the cost and related
accumulated depreciation of the assets disposed of are removed from the
accounts, with any resulting gain or loss included in current operations.


                                       24
<PAGE>   14

- --------------------------------------------------------------------------------
COGNEX CORPORATION -
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
- --------------------------------------------------------------------------------

Intangible Assets

Intangible assets are stated at cost and amortized using the straight-line
method over the assets' estimated useful lives, which range from five to eight
years. The Company evaluates the possible impairment of long-lived assets,
including intangible assets, whenever events or circumstances indicate that the
carrying value of the assets may not be recoverable.

Warranty Obligations

The Company provides warranties for its products for periods ranging from six
months to two years from the date of shipment based upon the product being
purchased and the terms of the customer's contract. Estimated warranty
obligations are evaluated and recorded at the time of sale.

Revenue Recognition

Revenue from product sales and software licenses is recognized upon shipment.
Revenue from construction-type projects is recognized using the
percentage-of-completion method. Losses on projects, if any, are recognized when
identified. Service and maintenance revenue is recognized as earned.

Research and Development

Research and development costs for internally-developed products are expensed
when incurred until technological feasibility has been established for the
product. Thereafter, all software costs are capitalized until the product is
available for general release to customers. The cost of acquired software is
capitalized for products determined to have reached technological feasibility;
otherwise, the cost is expensed. Capitalized software costs are amortized using
the straight-line method over the economic life of the product, typically three
to five years, or based upon the anticipated revenues of the product.

Income Taxes

The Company accounts for income taxes under the liability method. Under this
method, a deferred tax asset or liability is determined based on the differences
between the financial statement and tax basis of assets and liabilities as
measured by the enacted tax rates which will be in effect when these differences
reverse. Tax credits are recorded as a reduction in income taxes. Valuation
allowances are provided if, based upon the weight of available evidence, it is
more likely than not that some or all of the deferred tax assets will not be
realized.

Net Income Per Share

Basic net income per share excludes dilution and is computed by dividing net
income available to common stockholders by the weighted-average number of common
shares outstanding for the period. Diluted net income per share reflects the
potential dilution that could occur if securities or other contracts to issue
common stock were issued, exercised, or converted into common stock. Dilutive
common equivalent shares consist of stock options, calculated using the treasury
stock method.

Comprehensive Income

The Company has adopted Statement of Financial Accounting Standards (SFAS) No.
130, "Reporting Comprehensive Income," for the year ended December 31, 1998,
which requires that changes in comprehensive income be shown in a financial
statement that is displayed with the same prominence as other financial
statements. The Company has presented accumulated other comprehensive income and
comprehensive income on the Consolidated Statements of Stockholders' Equity in
accordance with this standard.

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


                                       25
<PAGE>   15

- --------------------------------------------------------------------------------
COGNEX CORPORATION -
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (CONTINUED)
- --------------------------------------------------------------------------------

Segment Information

The Company has adopted SFAS No. 131, "Disclosures about Segments of an
Enterprise and Related Information," for the year ended December 31, 1998, which
requires companies to report selected information about operating segments, as
well as enterprise-wide disclosures about products and services, geographic
areas, and major customers. Operating segments are determined based on the way
that management organizes its business for making operating decisions and
assessing performance.

Financial Instruments
- --------------------------------------------------------------------------------

Fair Value

The Company's financial instruments consist primarily of cash and cash
equivalents, investments, trade receivables, trade payables, and forward
exchange contracts. The carrying amounts of cash and cash equivalents,
investments, trade receivables, and trade payables approximate fair value due to
the short maturity of these instruments. Based on year-end exchange rates and
the various maturity dates of the forward exchange contracts, the Company
estimates the aggregate contract value to be representative of the fair values
of these instruments.

Concentrations of Credit Risk

Financial instruments which potentially subject the Company to concentrations of
credit risk consist primarily of cash and cash equivalents, investments, and
trade receivables.

The Company invests in debt instruments of U.S. and state government entities.
The Company has established guidelines relative to credit ratings,
diversification, and maturities that maintain safety and liquidity. The Company
has not experienced any significant losses on its cash equivalents and
investments.

A significant portion of the Company's sales and receivables are from customers
who are either in or who serve the semiconductor and electronics industries. The
Company performs ongoing credit evaluations of its customers and maintains
allowances for potential credit losses. The Company has not experienced any
significant losses related to the collection of its accounts receivable.

Off-Balance Sheet Risk

In certain instances, the Company enters into forward exchange contracts to
hedge commitments against foreign currency fluctuations. The forward exchange
contracts are for periods consistent with its committed exposure and require the
Company to exchange foreign currencies for U.S. dollars at maturity, at rates
agreed upon at the inception of the contracts. For contracts that are designated
and effective as hedges, the gain or loss on the forward exchange contract is
deferred and included in the measurement of the related foreign currency
transaction. The Company had $8,700,000 and $7,900,000 of foreign exchange
contracts outstanding, all of which were in Japanese yen, at December 31, 1998
and 1997, respectively.

Foreign Currency Risk

The Company enters into transactions denominated in foreign currencies and
includes the exchange rate gain or loss arising from such transactions in
current operations. The Company recorded an exchange rate gain of $127,000 in
1998, and exchange rate losses of $155,000 in 1997 and $1,027,000 in 1996.


                                       26
<PAGE>   16
- --------------------------------------------------------------------------------
COGNEX CORPORATION -
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

CASH AND INVESTMENTS
- --------------------------------------------------------------------------------

Cash and investments consist of the following:

<TABLE>
<CAPTION>
- ----------------------------------------------------------------------------------
DECEMBER 31,                                                 1998           1997
- ----------------------------------------------------------------------------------
<S>                                                        <C>            <C>     
  (IN THOUSANDS)
  CASH                                                     $ 22,002       $ 19,868
  MUNICIPAL OBLIGATIONS WITH CONTRACTUAL MATURITIES:
    LESS THAN THREE MONTHS                                    5,805         18,330
- ----------------------------------------------------------------------------------
      TOTAL CASH AND CASH EQUIVALENTS                        27,807         38,198
    GREATER THAN THREE MONTHS AND LESS THAN ONE YEAR         49,345         49,216
    GREATER THAN ONE YEAR                                    81,306         90,600
- ----------------------------------------------------------------------------------
                                                           $158,458       $178,014
==================================================================================
</TABLE>

INVENTORIES
- --------------------------------------------------------------------------------
Inventories consist of the following:

- --------------------------------------------------------------------------------
DECEMBER 31,                                                  1998         1997
- --------------------------------------------------------------------------------
  (IN THOUSANDS)
  RAW MATERIALS                                             $ 6,195       $4,425
  WORK-IN-PROCESS                                             1,262        1,355
  FINISHED GOODS                                              3,355        2,004
- --------------------------------------------------------------------------------
                                                            $10,812       $7,784
================================================================================


                                       27


<PAGE>   17
- --------------------------------------------------------------------------------
COGNEX CORPORATION -
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

PROPERTY, PLANT, AND EQUIPMENT
- --------------------------------------------------------------------------------
Property, plant, and equipment consist of the following:

- -------------------------------------------------------------------
DECEMBER 31,                                1998            1997
- -------------------------------------------------------------------
  (IN THOUSANDS)
  LAND                                    $  3,051        $  3,051
  BUILDINGS                                 17,571          17,571
  BUILDING IMPROVEMENTS                      3,127           2,717
  COMPUTER HARDWARE AND SOFTWARE            24,793          19,553
  FURNITURE AND FIXTURES                     3,351           2,429
  LEASEHOLD IMPROVEMENTS                     1,542             661
- -------------------------------------------------------------------
                                            53,435          45,982
  LESS: ACCUMULATED DEPRECIATION           (19,180)        (12,987)
- -------------------------------------------------------------------
                                          $ 34,255        $ 32,995
===================================================================

ACCRUED EXPENSES
- --------------------------------------------------------------------------------
Accrued expenses consist of the following:

- -------------------------------------------------------------------
DECEMBER 31,                                1998            1997
- -------------------------------------------------------------------
  (IN THOUSANDS)
  COMPENSATION AND RELATED COSTS          $  3,749        $  6,075
  WARRANTY                                   2,761           2,407
  PROFESSIONAL FEES                          1,407           1,027
  ACQUISITION COSTS                            912           1,237
  OTHER                                      2,824           2,966
- -------------------------------------------------------------------
                                          $ 11,653        $ 13,712
===================================================================


                                       28
<PAGE>   18
- --------------------------------------------------------------------------------
COGNEX CORPORATION -
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

COMMITMENTS
- --------------------------------------------------------------------------------

The Company has agreements with third-party contractors to perform the majority
of component procurement, subassembly, final assembly, and initial testing for
the hardware portion of its vision systems. After the completion of initial
testing, the third-party contractors deliver the products to the Company to
perform final testing and assembly. At December 31, 1998, the Company had
unconditional obligations to purchase $3,670,000 of inventory from third-party
contractors within 60 days. These purchase commitments relate to expected sales
in 1999.


The Company conducts certain of its operations in leased facilities. These lease
agreements expire at various dates through the year 2003 and are accounted for
as operating leases. Annual rent expense totaled $2,366,000 in 1998, $1,637,000
in 1997, and $1,324,000 in 1996. Future minimum rental payments under these
agreements are as follows at December 31, 1998 (in thousands):


Year        Amount
- ------------------
1999        $2,459
2000         2,201
2001         1,646
2002           542
2003            23
- ------------------
            $6,871
==================
     

In June 1995, the Company purchased an 83,000 square-foot office building
adjacent to its corporate headquarters. The building is currently occupied with
tenants who have lease agreements that expire at various dates through the year
2000. Annual rental income totaled $1,499,000 in 1998, $1,428,000 in 1997, and
$1,326,000 in 1996. Rental income and related expenses are presented on the
Consolidated Statements of Income as "Other Income." Future minimum rental
receipts under non-cancelable lease agreements are as follows at December 31,
1998 (in thousands):

Year        Amount
- ------------------
1999        $1,317
2000           994
- ------------------
            $2,311
==================

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


                                       29
<PAGE>   19

- --------------------------------------------------------------------------------
COGNEX CORPORATION -
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

STOCKHOLDERS' EQUITY
- --------------------------------------------------------------------------------

Preferred Stock

The Company has 400,000 shares of authorized but unissued $.01 par value
preferred stock.

Stock Repurchase Program

On April 21, 1998, the Company's Board of Directors authorized the repurchase of
up to $20,000,000 of the Company's common stock. A total of 882,000 shares were
repurchased through May 27, 1998 amounting to $19,937,000 which completed the
Company's stock repurchases under this program. On June 3, 1998, the Board
authorized the repurchase of up to an additional 1,500,000 shares of the
Company's common stock. As of December 31, 1998, 1,320,000 shares have been
repurchased under this second program amounting to $19,930,000. Such repurchases
are part of the Company's ongoing program to replenish shares used for the
granting of stock options and are made from time to time in the open market or
in private transactions depending upon acceptable price levels and the
availability of shares.

Stock-Based Compensation Plans

The Company has adopted the disclosure requirements of SFAS No. 123, "Accounting
for Stock-Based Compensation." The Company continues to recognize compensation
costs using the intrinsic value based method described in Accounting Principles
Board Opinion No. 25, "Accounting for Stock Issued to Employees." No
compensation costs were recognized in 1998, 1997, and 1996.

Net income and net income per share as reported in these consolidated financial
statements and on a pro forma basis, as if the fair value based method described
in SFAS No. 123 had been adopted, are as follows:

<TABLE>
<CAPTION>
- -----------------------------------------------------------------------------------------------
YEAR ENDED DECEMBER 31,                                       1998          1997          1996
- -----------------------------------------------------------------------------------------------
  (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
<S>                                                         <C>           <C>           <C>    
  NET INCOME                                AS REPORTED     $20,203       $40,536       $30,369
                                            PRO FORMA        13,861        34,380        25,204
  BASIC NET INCOME PER SHARE                AS REPORTED         .49           .98           .75
                                            PRO FORMA           .34           .83           .62
  DILUTED NET INCOME PER SHARE              AS REPORTED         .47           .91           .69
                                            PRO FORMA           .29           .74           .59
</TABLE>

The effects of applying SFAS No. 123 for the purpose of providing pro forma
disclosures may not be indicative of the effects on reported net income and net
income per share for future years, as the pro forma disclosures include the
effects of only those awards granted after January 1, 1995, and the Company
expects to grant options in future years.


                                       30
<PAGE>   20
- --------------------------------------------------------------------------------
COGNEX CORPORATION -
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

STOCKHOLDERS' EQUITY (CONTINUED)
- --------------------------------------------------------------------------------

Stock Option Plans

At December 31, 1998, the Company had 10,622,000 shares approved by the Board of
Directors and stockholders for grant under the following stock option plans: the
1992 Director Plan, 352,000; the 1993 Director Plan, 320,000; the 1993 Employee
Plan, 8,000,000; the 1998 Director Plan, 250,000; and the 1998 Stock Incentive
Plan, 1,700,000. In April 1996, an amendment was adopted to increase the number
of shares of common stock reserved for issuance under the 1993 Employee Plan
from 5,000,000 shares to 8,000,000 shares.

On April 21, 1998, the stockholders approved the 1998 Stock Incentive Plan,
under which the Company may initially grant stock options and stock awards to
purchase up to 1,700,000 shares of common stock. Effective January 1, 1999 and
each January 1 thereafter during the term of the 1998 Stock Incentive Plan, the
number of shares of common stock available for grants of stock options and stock
awards shall be increased automatically to an amount equal to 4.5% of the total
number of issued shares of common stock (including shares held in treasury) as
of the close of business on December 31 of the preceding year.

In connection with the acquisition of Isys Controls, Inc. in February 1996, the
Company adopted the 1996 Long-Term Incentive Plan. This plan provided for the
grant of 321,589 shares of either restricted common stock or options to purchase
restricted stock. Other than restrictions that limit the sale and transfer of
the restricted stock within 20 years from the date of grant, participants are
entitled to all of the rights of a stockholder.

On July 30, 1996, the Company granted 1,177,830 options at the current fair
market value with similar terms and conditions to previously issued but
unexercised grants. In exchange for the new grants, employees agreed to forfeit
their prior options. On December 15, 1998, the Company granted 1,320,100 options
at the current fair market value with similar terms and conditions to previously
issued but unexercised grants. In exchange for the new grants, employees agreed
to forfeit their prior options.

Options vest over various periods, not exceeding 10 years, and expire no later
than 20 years from the date of grant.

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


                                       31
<PAGE>   21

- --------------------------------------------------------------------------------
COGNEX CORPORATION -
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

STOCKHOLDERS' EQUITY (CONTINUED)
- --------------------------------------------------------------------------------

Stock Option Plans (Continued)

The following table summarizes the status of the Company's stock option plans at
December 31, 1998, 1997, and 1996, and changes during the years then ended:

<TABLE>
<CAPTION>
- -----------------------------------------------------------------------------------------------------------------------------------
                                                           1998                       1997                         1996
- -----------------------------------------------------------------------------------------------------------------------------------
                                                                 WEIGHTED-                WEIGHTED-                       WEIGHTED-
                                                                  AVERAGE                  AVERAGE                         AVERAGE
                                                                 EXERCISE                 EXERCISE                        EXERCISE
                                                   SHARES          PRICE        SHARES      PRICE           SHARES          PRICE
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                              <C>              <C>         <C>           <C>           <C>              <C>   
OUTSTANDING AT BEGINNING OF YEAR                 7,764,907        $ 11.85     8,014,386     $ 8.34        7,699,826        $ 9.10
  GRANTED AT FAIR MARKET VALUE                   3,587,535          16.63     1,450,521      24.55          933,915         16.80
  GRANTED ABOVE FAIR MARKET VALUE                                                91,500      26.41        1,807,583         16.18
  EXERCISED                                       (604,714)          6.50      (996,965)      4.87         (518,925)         3.18
  FORFEITED                                     (2,425,393)         20.96      (794,535)     10.05       (1,908,013)        24.39
                                                ----------                   ----------                 -----------  
OUTSTANDING AT END OF YEAR                       8,322,335          11.65     7,764,907      11.85        8,014,386          8.34
                                                ==========                   ==========                 ===========
OPTIONS EXERCISABLE AT YEAR-END                  2,502,865           7.45     2,140,956       6.14        2,128,058          4.40
WEIGHTED-AVERAGE GRANT-DATE FAIR
  VALUE OF OPTIONS GRANTED DURING       
  THE YEAR AT FAIR MARKET VALUE                  $    5.65                   $    12.48                 $     11.78
WEIGHTED-AVERAGE GRANT-DATE FAIR 
  VALUE OF OPTIONS GRANTED DURING        
  THE YEAR ABOVE FAIR MARKET VALUE                                           $    11.50                 $      4.46
</TABLE>                          


                                       32
<PAGE>   22
- --------------------------------------------------------------------------------
COGNEX CORPORATION -
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

STOCKHOLDERS' EQUITY (CONTINUED)
- --------------------------------------------------------------------------------

Stock Option Plans (Continued)

The following table summarizes information about stock options outstanding at
December 31, 1998:

<TABLE>
<CAPTION>
- ---------------------------------------------------------------------------------------
                              OPTIONS OUTSTANDING                OPTIONS EXERCISABLE
- ---------------------------------------------------------------------------------------
                                WEIGHTED-AVERAGE   WEIGHTED-                  WEIGHTED-
                                    REMAINING       AVERAGE                    AVERAGE
    RANGE OF          NUMBER    CONTRACTUAL LIFE   EXERCISE      NUMBER       EXERCISE
EXERCISE PRICES    OUTSTANDING     (IN YEARS)        PRICE    EXERCISABLE       PRICE
- ---------------------------------------------------------------------------------------
<S>                 <C>               <C>           <C>        <C>              <C>  
  $.50 -  6.00      1,126,115         4.4           $ 3.48     1,077,666        $3.55
  6.06 -  7.50      2,348,965         9.5             7.46       742,465         7.39
  7.94 - 14.50      1,365,930         6.9            13.40       569,133        12.69
 14.56 - 15.88      1,149,740         9.4            15.58        22,319        14.82
     16.00          1,671,435         9.2            16.00         1,476        16.00
 16.50 - 32.81        658,150         8.5            18.97        89,606        19.60
     36.31              2,000         8.6            36.31           200        36.31
                    ---------                                  ---------
   .50 - 36.31      8,322,335         8.2            11.65     2,502,865         7.45
                    ---------                                  ---------
</TABLE>

For the purpose of providing pro forma disclosures, the fair values of options
granted were estimated using the Black-Scholes option-pricing model with the
following weighted-average assumptions used for grants in 1998, 1997, and 1996,
respectively: a risk-free interest rate of 5.1%, 6.3%, and 6.3%; an expected
life of 4.1, 5.1, and 4.4 years; expected volatility of 50%; and no expected
dividends.

Employee Stock Purchase Plan

Under the Company's Employee Stock Purchase Plan (ESPP), employees who have
completed six months of continuous employment with the Company may purchase
common stock semi-annually at the lower of 85% of the fair market value of the
stock at the beginning or end of the six-month payment period, through
accumulation of payroll deductions. Employees are required to hold stock
purchased under the ESPP for a period of one year from the date of purchase.
Common stock reserved for future sales totaled 432,864 shares at December 31,
1998. Shares purchased under the ESPP totaled 30,670 in 1998, 22,436 in 1997,
and 27,215 in 1996. The weighted-average fair value of shares purchased under
the ESPP was $7.52 in 1998, $5.08 in 1997, and $6.82 in 1996.

For the purpose of providing pro forma disclosures, the fair values of shares
purchased were estimated using the Black-Scholes option-pricing model with the
following weighted-average assumptions used for purchases in 1998, 1997, and
1996: a risk-free interest rate of 5.3%; an expected life of six months;
expected volatility of 50%; and no expected dividends.

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


                                       33
<PAGE>   23

- --------------------------------------------------------------------------------
COGNEX CORPORATION -
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

EMPLOYEE SAVINGS PLAN
- --------------------------------------------------------------------------------

Under the Company's Employee Savings Plan, a defined contribution plan,
employees who have attained age 21 may contribute 1% to 15% of their salary on a
pre-tax basis. Employer contributions are made at the discretion of management
and vest after five years of continuous employment with the Company. Employer
contributions approximated $230,000 in 1998, $400,000 in 1997, and $300,000 in
1996.

Income Taxes
- --------------------------------------------------------------------------------
The provision for income taxes consists of the following:

- -------------------------------------------------------------------
Year Ended December 31,         1998           1997           1996
- -------------------------------------------------------------------
  (IN THOUSANDS)
CURRENT:
  FEDERAL                     $ 5,468        $17,048        $13,169
  STATE                         1,617          2,850            128
  FOREIGN                       1,357            473            392
- -------------------------------------------------------------------
                                8,442         20,371         13,689
DEFERRED:                   
  FEDERAL                      (1,582)        (1,552)          (902)
  STATE                           239         (1,029)           541
- -------------------------------------------------------------------
                              $ 7,099        $17,790        $13,328
===================================================================
                    
A reconciliation of the provision for income taxes to the federal statutory rate
is as follows:

<TABLE>
<CAPTION>
- ---------------------------------------------------------------------------------------
Year Ended December 31,                                    1998        1997        1996
- ---------------------------------------------------------------------------------------
<S>                                                         <C>         <C>         <C>
PROVISION FOR INCOME TAXES AT FEDERAL STATUTORY RATE        35%         35%         35%
STATE INCOME TAXES, NET OF FEDERAL BENEFIT                   1           2         2.5
FOREIGN SALES CORPORATION BENEFIT                           (3)         (3)         (3)
TAX-EXEMPT INVESTMENT INCOME                                (8)         (3)         (3)
TAX CREDIT UTILIZATION                                                  (1)         (1)
OTHER                                                        1         0.5
- ---------------------------------------------------------------------------------------
PROVISION FOR INCOME TAXES                                  26%       30.5%       30.5%
=======================================================================================
</TABLE>


                                       34
<PAGE>   24
- --------------------------------------------------------------------------------
COGNEX CORPORATION -
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

INCOME TAXES (CONTINUED)
- --------------------------------------------------------------------------------

Deferred income taxes reflect the tax impact of temporary differences between
the amount of assets and liabilities for financial reporting purposes and such
amounts as measured by tax laws and regulations. The tax effects of the
principal items making up deferred income taxes are as follows:

- --------------------------------------------------------------------------
DECEMBER 31,                                           1998          1997
- --------------------------------------------------------------------------
(IN THOUSANDS)
CURRENT DEFERRED TAX ASSETS:
  VACATION, BAD DEBT, AND OTHER                       $1,370        $1,296
  INVENTORY, WARRANTY, AND OTHER                       2,298         1,833
  OTHER                                                  268           324
- --------------------------------------------------------------------------
TOTAL NET CURRENT DEFERRED TAX ASSET                  $3,936        $3,453
==========================================================================
NONCURRENT DEFERRED TAX ASSETS (LIABILITIES):
  STATE CREDIT CARRYFORWARDS                          $  999        $  888
  ACQUIRED COMPLETE TECHNOLOGY AND OTHER                (156)         (376)
  ACQUIRED IN-PROCESS TECHNOLOGY                       1,615         1,099
  DEPRECIATION                                          (221)         (234)
- --------------------------------------------------------------------------
TOTAL NET NONCURRENT DEFERRED TAX ASSET               $2,237        $1,377
==========================================================================

The Company's state credit carryforwards, net of federal tax impact, are
approximately $999,000, a portion of which will begin to expire in the year
2010.

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


                                       35
<PAGE>   25

- --------------------------------------------------------------------------------
COGNEX CORPORATION -
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

NET INCOME PER SHARE
- --------------------------------------------------------------------------------
Net income per share is calculated as follows:

<TABLE>
<CAPTION>
- --------------------------------------------------------------------------------------
Year Ended December 31,                              1998          1997          1996
- --------------------------------------------------------------------------------------
<S>                                                <C>           <C>           <C>    
(IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
NET INCOME                                         $20,203       $40,536       $30,369
======================================================================================
BASIC:
  WEIGHTED-AVERAGE COMMON SHARES OUTSTANDING        40,978        41,322        40,594
======================================================================================
  NET INCOME PER COMMON SHARE                      $   .49       $   .98       $   .75
======================================================================================
DILUTED:
  WEIGHTED-AVERAGE COMMON SHARES OUTSTANDING        40,978        41,322        40,594
  EFFECT OF DILUTIVE SECURITIES:
    STOCK OPTIONS                                    2,225         3,380         3,220
- --------------------------------------------------------------------------------------
  WEIGHTED-AVERAGE COMMON AND COMMON
    EQUIVALENT SHARES OUTSTANDING                   43,203        44,702        43,814
======================================================================================
  NET INCOME PER COMMON AND COMMON        
    EQUIVALENT SHARE                               $   .47       $   .91       $   .69
======================================================================================
</TABLE>
                              
Stock options to purchase 151,550, 545,386, and 66,500 shares of common stock
were outstanding during the years ended December 31, 1998, 1997, and 1996,
respectively, but were not included in the calculation of diluted EPS because
the option's exercise price was greater than the average market price of the
Company's common shares during those years. Although these options were
antidilutive in 1998, 1997, and 1996, because they were still outstanding at
December 31, 1998, they may be dilutive in future years' calculations. The
151,550 options in 1998 consisted of grants with exercise prices ranging from
$18.94 - $36.31. The 545,386 options in 1997 consisted of grants with exercise
prices ranging from $26.50 - $36.31. The 66,500 options in 1996 consisted of
grants with exercise prices ranging from $24.00 - $26.50.


                                       36
<PAGE>   26

- --------------------------------------------------------------------------------
COGNEX CORPORATION -
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

SEGMENT INFORMATION
- --------------------------------------------------------------------------------

The Company operates in a single segment: the sale of machine vision systems.

During the years ended December 31, 1998, 1997, and 1996, one customer accounted
for $17,083,000, $27,292,000, and $13,765,000, or 14%, 18%, and 11%,
respectively, of revenue. 

The following table summarizes information about geographic areas (in
thousands):

<TABLE>
<CAPTION>
                                       UNITED
YEAR ENDED DECEMBER 31, 1998           STATES         JAPAN         OTHER     ELIMINATIONS   CONSOLIDATED
- ---------------------------------------------------------------------------------------------------------
<S>                                   <C>            <C>           <C>          <C>            <C>     
REVENUE:
  UNAFFILIATED CUSTOMERS              $104,321       $17,523                                   $121,844
  INTERCOMPANY                           5,493                                  $ (5,493)              
LONG-LIVED ASSETS                       33,807         2,035       $2,570                        38,412
</TABLE>


<TABLE>
<CAPTION>
                                       UNITED
YEAR ENDED DECEMBER 31, 1997           STATES         JAPAN         OTHER     ELIMINATIONS   CONSOLIDATED
- ---------------------------------------------------------------------------------------------------------
<S>                                   <C>            <C>           <C>          <C>            <C>     
REVENUE:
  UNAFFILIATED CUSTOMERS              $137,887       $17,453                                   $155,340
  INTERCOMPANY                          10,336                                  $(10,336)              
LONG-LIVED ASSETS                       34,010           674       $1,773                        36,457
</TABLE>


                                       37
<PAGE>   27
- --------------------------------------------------------------------------------
COGNEX CORPORATION -
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

SEGMENT INFORMATION (CONTINUED)
- --------------------------------------------------------------------------------


<TABLE>
<CAPTION>
                                       UNITED
YEAR ENDED DECEMBER 31, 1996           STATES         JAPAN         OTHER     ELIMINATIONS   CONSOLIDATED
- ---------------------------------------------------------------------------------------------------------
<S>                                   <C>            <C>           <C>          <C>            <C>     
REVENUE:
  UNAFFILIATED CUSTOMERS              $107,626       $15,217                                   $122,843
  INTERCOMPANY                           9,755                                  $(9,755)
LONG-LIVED ASSETS                       30,310           528        $1,027                       31,865
</TABLE>

Revenue is presented geographically based on the country in which the sale is
recorded. Inventories are transferred to the Company's Japanese subsidiary at
previously established transfer prices, resulting in intercompany revenue and
receivables for the United States operation.

"Other" represents all long-lived assets in other countries, none of which were
significant, and certain deposits which are included in "Other Assets" on the
Consolidated Balance Sheets.

Deferred tax assets recorded in Japan are not material compared to the Company's
consolidated financial position, and therefore, are not presented.


                                       38
<PAGE>   28

- --------------------------------------------------------------------------------
COGNEX CORPORATION -
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

ACQUISITION OF ALLEN-BRADLEY TECHNOLOGY
- --------------------------------------------------------------------------------

In July 1998, the Company acquired certain technology of Rockwell Automation's
Allen-Bradley machine vision business. The acquired technology related to
certain products under development. The technology was valued using a
risk-adjusted cash flow model, under which future cash flows were discounted
taking into account risks related to existing markets, the technology's life
expectancy, future target markets and potential changes thereto, and the
competitive outlook for the technology. This analysis resulted in an allocation
of $2,100,000 to in-process technology which had not reached technological
feasibility and had no alternative future use, and accordingly, was expensed
immediately.

ACQUISITION OF MAYAN AUTOMATION, INC.
- --------------------------------------------------------------------------------

On July 31, 1997, the Company acquired selected assets and assumed selected
liabilities of Mayan Automation, Inc. (Mayan), a developer of low-cost machine
vision systems used for surface inspection, for $4,800,000 in cash. At December
31, 1998, $900,000 of the purchase price remained to be paid in cash in 1999,
contingent upon the attainment of certain performance milestones. The
acquisition was accounted for under the purchase method of accounting.
Accordingly, Mayan's results of operations have been included in the Company's
consolidated results of operations since the date of acquisition. Mayan's
historical results of operations were not material compared to the Company's
consolidated results of operations, and therefore, pro forma results are not
presented.

The purchase price was allocated among the identifiable assets of Mayan. After
allocating the purchase price to the net tangible assets, acquired technology
was valued using a risk-adjusted cash flow model, under which future cash flows
were discounted taking into account risks related to existing markets, the
technology's life expectancy, future target markets and potential changes
thereto, and the competitive outlook for the technology. This analysis resulted
in an allocation of $400,000 to complete technology, to be amortized over five
years, and $3,115,000 to in-process technology which had not reached
technological feasibility and had no alternative future use, and accordingly,
was expensed immediately. Up to an additional $900,000 of contingent
consideration will be recorded as purchase price when paid and will be allocated
to goodwill to be amortized over the remaining period of expected benefit.

ACQUISITION OF ISYS CONTROLS, INC.
- --------------------------------------------------------------------------------

On February 29, 1996, the Company acquired Isys Controls, Inc. (Isys), a
developer of machine vision systems for high-speed surface inspection. The
acquisition was accounted for as a pooling of interests, and therefore the
results of operations of Isys for the full year are included in the consolidated
financial statements of the Company for the year ended December 31, 1996.

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


                                       39
<PAGE>   29

- --------------------------------------------------------------------------------
COGNEX CORPORATION -
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

SUPPLEMENTAL STATEMENT OF CASH FLOWS DISCLOSURE
- --------------------------------------------------------------------------------

Cash paid for income taxes totaled $10,710,000 in 1998, $12,564,000 in 1997, and
$11,218,000 in 1996.

Common stock received as payment for stock option exercises totaled $50,000 in
1998 and $547,000 in 1997.

The Company retired certain fully-depreciated property, plant, and equipment
totaling $1,056,000 in 1997.

In 1996, the Company exchanged 1,078,380 shares of Cognex common stock for Isys
common shares, and 253,547 shares of Cognex common stock for Isys restricted
common shares, with similar restrictions, in connection with the acquisition of
Isys.


                                       40
<PAGE>   30

- --------------------------------------------------------------------------------
COGNEX CORPORATION --
REPORT OF INDEPENDENT ACCOUNTANTS

To the Board of Directors and Stockholders of Cognex Corporation:
- --------------------------------------------------------------------------------
In our opinion, the accompanying consolidated balance sheets and the related
consolidated statements of income, of stockholders' equity and of cash flows
present fairly, in all material respects, the financial position of Cognex
Corporation and its subsidiaries at December 31, 1998 and 1997, and the results
of their operations and their cash flows for each of the three years in the
period ended December 31, 1998, in conformity with generally accepted accounting
principles. These financial statements are the responsibility of the Company's
management; our responsibility is to express an opinion on these financial
statements based on our audits. We conducted our audits of these statements in
accordance with generally accepted auditing standards which require that we plan
and perform the audit to obtain reasonable assurance about whether the financial
statements are free of material misstatement. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements, assessing the accounting principles used and significant estimates
made by management, and evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for the opinion expressed
above.

Boston, Massachusetts                             /s/ PricewaterhouseCoopers LLP
January 26, 1999                                      PricewaterhouseCoopers LLP

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


                                       41
<PAGE>   31

- --------------------------------------------------------------------------------
COGNEX CORPORATION --
SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED)

<TABLE>
<CAPTION>
- ----------------------------------------------------------------------------------------------------------------
                                                APRIL 5,          JULY 5,          OCTOBER 4,       DECEMBER 31,
QUARTER ENDED                                     1998              1998              1998              1998
- ----------------------------------------------------------------------------------------------------------------
<S>                                             <C>               <C>               <C>               <C>    
(IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
REVENUE                                         $40,056           $32,036           $24,659           $25,093
GROSS MARGIN                                     29,129            22,562            16,382            16,475
CHARGE FOR ACQUIRED IN-PROCESS TECHNOLOGY                                             2,100
INCOME (LOSS) FROM OPERATIONS                    12,955             7,219            (1,095)              734
NET INCOME                                       10,542             6,517               951             2,193
BASIC NET INCOME PER SHARE                          .25               .16               .02               .05
DILUTED NET INCOME PER SHARE                        .24               .15               .02               .05
COMMON STOCK PRICES:
  HIGH                                           27.000            24.690            19.250            20.000
  LOW                                            19.500            15.500            11.250            10.125
- ----------------------------------------------------------------------------------------------------------------

<CAPTION>
- ----------------------------------------------------------------------------------------------------------------
                                               MARCH 30,          JUNE 29,       SEPTEMBER 28,      DECEMBER 31,
QUARTER ENDED                                     1997              1997              1997              1997
- ----------------------------------------------------------------------------------------------------------------
<S>                                             <C>               <C>               <C>               <C>    
(IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
REVENUE                                         $28,143           $36,271           $43,936           $46,990
GROSS MARGIN                                     20,448            26,331            32,476            33,812
CHARGE FOR ACQUIRED IN-PROCESS TECHNOLOGY                                             3,115
INCOME FROM OPERATIONS                            7,850            12,069            13,976            17,766
NET INCOME                                        6,491             9,372            10,941            13,732
BASIC NET INCOME PER SHARE                          .16               .23               .26               .33
DILUTED NET INCOME PER SHARE                        .15               .21               .24               .31
COMMON STOCK PRICES:
  HIGH                                           21.750            27.500            38.500            34.375
  LOW                                            17.500            19.000            26.375            22.250
- ----------------------------------------------------------------------------------------------------------------
</TABLE>

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


                                       42
<PAGE>   32

- --------------------------------------------------------------------------------
COGNEX CORPORATION --
COMPANY INFORMATION

TRANSFER AGENT
- --------------------------------------------------------------------------------
BankBoston, N.A. c/o EquiServe
P.O. Box 8040
Boston, Massachusetts 02266-8040
Telephone (800) 736-3001

GENERAL COUNSEL
- --------------------------------------------------------------------------------
Hutchins, Wheeler & Dittmar -- Boston, Massachusetts

INDEPENDENT ACCOUNTANTS
- --------------------------------------------------------------------------------
PricewaterhouseCoopers LLP -- Boston, Massachusetts

FORM 10-K
- --------------------------------------------------------------------------------
A copy of the annual report filed with the Securities and Exchange Commission on
Form 10-K is available to stockholders, without charge, upon request to:

Department of Investor Relations
Cognex Corporation
One Vision Drive
Natick, MA 01760

Additional copies of this annual report are also available, without charge, upon
request to the above address.

The Company's common stock is traded on The NASDAQ Stock Market, under the
symbol CGNX. As of February 11, 1999, there were approximately 14,000 registered
and non-registered holders of the Company's common stock.

No dividends on the Company's common stock were paid during 1998 and 1997.


                                       43

<PAGE>   1
                                                                      EXHIBIT 21

                               COGNEX CORPORATION
                         SUBSIDIARIES OF THE REGISTRANT


     At December 31, 1998, the registrant had the following subsidiaries, the
financial statements of which are all included in the consolidated financial
statements of the registrant:

<TABLE>
<CAPTION>

          NAME OF                               STATE/COUNTRY OF                PERCENT
       SUBSIDIARY                                INCORPORATION                 OWNERSHIP
- --------------------------------                ----------------               ---------
<S>                                             <C>                              <C>
Cognex Technology and Investment
  Corporation                                   California                       100%
Cognex Canada Technology, Inc.                  California                       100%
Cognex Foreign Sales Corporation                Barbados                         100%
Vision Drive, Inc.                              Delaware                         100%
Isys Controls, Inc.                             California                       100%
Cognex K.K.                                     Japan                            100%
Cognex Europe, Inc.                             Delaware                         100%
Cognex International, Inc.                      Delaware                         100%
Cognex Germany, Inc.                            Massachusetts                    100%
Cognex Singapore, Inc.                          Delaware                         100%
Cognex Korea, Inc.                              Delaware                         100%
Cognex Taiwan, Inc.                             Delaware                         100%
Cognex Canada, Inc.                             Delaware                         100%
</TABLE>
























<PAGE>   1


                                                                      EXHIBIT 23

                       CONSENT OF INDEPENDENT ACCOUNTANTS


     We consent to the incorporation by reference in the registration statements
of Cognex Corporation on Form S-8 (File Nos. 33-31657, 33-32815, 33-36263,
33-72634, 33-72636, 33-72638, 33-81150, 33-81152, 333-2151, 333-4621, and
333-60807) of our reports dated January 26, 1999, on our audits of the
consolidated financial statements and financial statement schedule of Cognex
Corporation as of December 31, 1998 and 1997, and for each of the three years in
the period ended December 31, 1998, which reports are incorporated by reference
or included in this Annual Report on Form 10-K.


Boston, Massachusetts                             /s/ PricewaterhouseCoopers LLP
March 26, 1999








<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM (A) THE
CONSOLIDATED FINANCIAL STATEMENTS OF COGNEX CORPORATION FOR THE YEAR
ENDED DECEMBER 31, 1998 AND IS QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
SUCH (B) CONSOLIDATED FINANCIAL STATEMENTS
</LEGEND>
<RESTATED> 
       
<S>                             <C>
<PERIOD-TYPE>                   12-MOS
<FISCAL-YEAR-END>                          DEC-31-1998
<PERIOD-START>                             JAN-01-1998
<PERIOD-END>                               DEC-31-1998
<CASH>                                      27,807,000
<SECURITIES>                               130,651,000
<RECEIVABLES>                               23,570,000
<ALLOWANCES>                                 2,583,000
<INVENTORY>                                 10,812,000
<CURRENT-ASSETS>                           207,279,000
<PP&E>                                      53,435,000
<DEPRECIATION>                              19,180,000
<TOTAL-ASSETS>                             247,928,000
<CURRENT-LIABILITIES>                       22,916,000
<BONDS>                                              0
                                0
                                          0
<COMMON>                                        85,000
<OTHER-SE>                                 222,790,000
<TOTAL-LIABILITY-AND-EQUITY>               247,928,000
<SALES>                                    121,844,000
<TOTAL-REVENUES>                           121,844,000
<CGS>                                       37,296,000
<TOTAL-COSTS>                               37,296,000
<OTHER-EXPENSES>                                     0
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                                   0
<INCOME-PRETAX>                             27,302,000
<INCOME-TAX>                                 7,099,000
<INCOME-CONTINUING>                         20,203,000
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                20,203,000
<EPS-PRIMARY>                                      .49
<EPS-DILUTED>                                      .47
        

</TABLE>


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