ELECTRO SCIENTIFIC INDUSTRIES INC
DEF 14A, 1998-08-28
MISCELLANEOUS ELECTRICAL MACHINERY, EQUIPMENT & SUPPLIES
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<PAGE>
                            SCHEDULE 14A INFORMATION
 
                  Proxy Statement Pursuant to Section 14(a) of
            the Securities Exchange Act of 1934 (Amendment No.    )
 
    Filed by the Registrant / /
    Filed by a Party other than the Registrant / /
 
    Check the appropriate box:
    / /  Preliminary Proxy Statement
    / /  Confidential, for Use of the Commission Only (as permitted by Rule
         14a-6(e)(2))
    /X/  Definitive Proxy Statement
    / /  Definitive Additional Materials
    / /  Soliciting Material Pursuant to Section240.14a-11(c) or
         Section240.14a-12
 
                            ELECTRO SCIENTIFIC INDUSTRIES, INC.
- --------------------------------------------------------------------------------
                (Name of Registrant as Specified In Its Charter)
 
- --------------------------------------------------------------------------------
    (Name of Person(s) Filing Proxy Statement, if other than the Registrant)
 
Payment of Filing Fee (Check the appropriate box):
 
/X/  No fee required.
/ /  Fee computed on table below per Exchange Act Rules 14a-6(i)(1)
     and 0-11.
     (1) Title of each class of securities to which transaction applies:
         -----------------------------------------------------------------------
     (2) Aggregate number of securities to which transaction applies:
         -----------------------------------------------------------------------
     (3) Per unit price or other underlying value of transaction computed
         pursuant to Exchange Act Rule 0-11 (set forth the amount on which the
         filing fee is calculated and state how it was determined):
         -----------------------------------------------------------------------
     (4) Proposed maximum aggregate value of transaction:
         -----------------------------------------------------------------------
     (5) Total fee paid:
         -----------------------------------------------------------------------
/ /  Fee paid previously with preliminary materials.
/ /  Check box if any part of the fee is offset as provided by Exchange Act Rule
     0-11(a)(2) and identify the filing for which the offsetting fee was paid
     previously. Identify the previous filing by registration statement number,
     or the Form or Schedule and the date of its filing.
     (1) Amount Previously Paid:
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<PAGE>
                                     [LOGO]
 
                            ------------------------
 
                    NOTICE OF ANNUAL MEETING OF SHAREHOLDERS
 
                             ---------------------
 
TO THE SHAREHOLDERS OF ELECTRO SCIENTIFIC INDUSTRIES, INC.:
 
    The Annual Meeting of Shareholders of Electro Scientific Industries, Inc.
(ESI) will be held at ESI's Offices, 14000 NW Science Park Drive, Portland,
Oregon, on Friday, September 25, 1998 at 1:00 p.m. Pacific time, for the
following purposes:
 
    1.  Electing three directors for a term of three years, one director for a
       term of two years and one director for a term of one year.
 
    2.  Amending the 1989 Stock Option Plan.
 
    3.  Amending the 1990 Employee Stock Purchase Plan.
 
    4.  Amending the 1996 Stock Incentive Plan.
 
    5.  Voting on the selection of independent auditors for the Company.
 
    6.  Transacting such other business as may properly come before the meeting.
 
    Only shareholders of record at the close of business on July 31, 1998 will
be entitled to vote at the annual meeting.
 
    You are requested to date and sign the enclosed proxy and return it by mail.
You may attend the meeting in person even though you have sent in your proxy,
since retention of the proxy is not necessary for admission to or identification
at the meeting.
 
                                          By Order of the Board of Directors
 
                                          Joseph L. Reinhart
                                          VICE PRESIDENT AND CORPORATE SECRETARY
 
Portland, Oregon
August 24, 1998
<PAGE>
                      ELECTRO SCIENTIFIC INDUSTRIES, INC.
                                PROXY STATEMENT
 
    The mailing address of the principal executive offices of the Company is
13900 NW Science Park Drive, Portland, Oregon 97229-5497. The approximate date
this proxy statement and the accompanying proxy form are first being mailed to
shareholders is August 24, 1998.
 
                     SOLICITATION AND REVOCABILITY OF PROXY
 
    The enclosed proxy is solicited on behalf of the Board of Directors of
Electro Scientific Industries, Inc., an Oregon corporation, for use at the
Annual Meeting of Shareholders to be held on September 25, 1998. The Company
will bear the cost of preparing and mailing the proxy, proxy statement and any
other material furnished to the shareholders by the Company in connection with
the annual meeting. Proxies will be solicited by use of the mails, and officers
and employees of the Company may, without additional compensation, also solicit
proxies by telephone or personal contact. Copies of solicitation materials will
be furnished to fiduciaries, custodians and brokerage houses for forwarding to
beneficial owners of the stock held in their names.
 
    Any person giving a proxy in the form accompanying this proxy statement has
the power to revoke it at any time before its exercise. The proxy may be revoked
by filing an instrument of revocation or a duly executed proxy bearing a later
date with the Corporate Secretary of the Company. The proxy may also be revoked
by affirmatively electing to vote in person while in attendance at the meeting.
However, a shareholder who attends the meeting need not revoke the proxy and
vote in person unless he or she wishes to do so. All valid, unrevoked proxies
will be voted at the Annual Meeting in accordance with the instructions given.
 
                  VOTING SECURITIES AND PRINCIPAL SHAREHOLDERS
 
    The Common Stock is the only outstanding authorized voting security of the
Company. The record date for determining holders of Common Stock entitled to
vote at the Annual Meeting is July 31, 1998. On that date there were 11,460,812
shares of Common Stock outstanding, entitled to one vote per share. The Common
Stock does not have cumulative voting rights.
 
    The following table shows ownership of the Common Stock of the Company on
May 31, 1998 by each person who, to the knowledge of the Company, owned
beneficially more than 5 percent of the Common Stock.
 
<TABLE>
<CAPTION>
                                                           AMOUNT AND NATURE OF
NAME AND ADDRESS                                                BENEFICIAL          APPROXIMATE
OF BENEFICIAL OWNER                                            OWNERSHIP(1)           PERCENT
- --------------------------------------------------------  ----------------------  ---------------
<S>                                                       <C>                     <C>
J & W Seligman & Co., Incorporated .....................          1,400,800(2)            12.2%
100 Park Avenue, New York, NY 10017
 
EQSF Advisor Incorporated ..............................            673,500(3)             5.9%
767 Third Avenue, New York, NY 10017
</TABLE>
 
- ------------------------
 
(1) Shares are held directly with sole investment and voting power unless
    otherwise indicated.
 
(2) Based solely on information provided as of February 13, 1998 in a Schedule
    13G filed by the shareholder.
 
(3) Based solely on information provided as of February 12, 1998 in a Schedule
    13G filed by the shareholder.
 
                                       2
<PAGE>
    The following table, which was prepared on the basis of information
furnished by the persons described, shows ownership of the Company's Common
Stock as of May 31, 1998, by each Director, each Executive Officer named in the
Summary Compensation Table, and by all Directors and Executive Officers as a
group.
 
<TABLE>
<CAPTION>
                                                           AMOUNT AND NATURE OF
                                                                BENEFICIAL           APPROXIMATE
NAME OF BENEFICIAL OWNER                                       OWNERSHIP(1)            PERCENT
- --------------------------------------------------------  ----------------------  -----------------
<S>                                                       <C>                     <C>
Robert Belter...........................................             5,046(2)             *
David F. Bolender.......................................            55,550(3)             *
Larry L. Hansen.........................................            12,987(4)             *
Barry L. Harmon.........................................            41,963(5)             *
Jonathan C. Howell......................................            31,282(6)             *
W. Arthur Porter........................................             3,000(4)             *
Joseph Z. Rivlin........................................            17,511(7)             *
Vernon B. Ryles, Jr.....................................             3,000(4)             *
Douglas C. Strain.......................................           153,833(8)(4)            1.3%
Gerald F. Taylor........................................                 0                *
Keith L. Thomson........................................             3,400(4)             *
Jon D. Tompkins.........................................                 0                *
Donald R. VanLuvanee....................................            95,767(9)             *
22 Directors and executive officers as a group..........           541,417(10)              4.7%
</TABLE>
 
- ------------------------
 
   * Less than 1 percent.
 
 (1) Shares are held directly with sole investment and voting power unless
     otherwise indicated. Includes shares awarded as performance-based
     restricted stock and time-based restricted stock that are subject to
     forfeiture in certain circumstances.
 
 (2) Includes 2,500 shares that are subject to stock options currently
     exercisable.
 
 (3) Includes 23,000 shares owned by Mr. Bolender's wife, as to which he
     disclaims beneficial ownership and includes 5,612 shares that are subject
     to stock options currently exercisable.
 
 (4) Includes 3,000 shares that are subject to stock options currently
     exercisable.
 
 (5) Includes 16,141 shares that are subject to stock options currently
     exercisable.
 
 (6) Includes 15,740 shares that are subject to stock options currently
     exercisable.
 
 (7) Includes 4,311 shares that are subject to stock options currently
     exercisable.
 
 (8) Includes 10,297 shares owned by Mr. Strain's wife and 216 shares owned by
     Douglas C. Strain and Leila Cleo Strain Charitable Remainder Trust, as to
     which he disclaims beneficial ownership.
 
 (9) Includes 61,050 shares that are subject to stock options currently
     exercisable.
 
 (10) Includes 144,714 shares that are subject to stock options currently
      exercisable or exercisable within 60 days of May 31, 1998.
 
                       PROPOSAL 1: ELECTION OF DIRECTORS
 
    Pursuant to the Company's Bylaws, the Board of Directors is divided into
three classes, and the term of office of one class expires each year. The terms
of Larry L. Hansen, Vernon B. Ryles and Donald R. VanLuvanee expire in 1998 and
they are nominees for re-election to three year terms. In January 1998, Jon D.
Tompkins was appointed as a director. Under current Oregon law Mr. Tompkins must
be re-elected by the shareholders to serve the remaining two years of his term.
In June 1998, Gerald F. Taylor was appointed as a director. Under current Oregon
law, Mr. Taylor must be re-elected by the shareholders to
 
                                       3
<PAGE>
serve the remaining one year of his term. Under Oregon law, if a quorum of
shareholders is present at the 1998 Annual Meeting, the five nominees for
election as Directors who receive the greatest number of votes cast at the
meeting shall be elected Directors. Abstentions and broker non-votes will have
no effect on the results of the vote. Unless otherwise instructed, proxy holders
will vote the proxies they receive for Mr. Hansen, Mr. Ryles, Mr. VanLuvanee,
Mr. Tompkins and Mr. Taylor. If any of the nominees for Director at the 1998
Annual Meeting becomes unavailable for election for any reason (none being
known), the proxy holders will have discretionary authority to vote pursuant to
the proxy for a suitable substitute or substitutes.
 
    The following table briefly describes the Company's nominees for Directors
and the Directors whose terms will continue. Except as otherwise noted, each has
held his principal occupation for at least five years.
 
<TABLE>
<CAPTION>
                                                                                                 DIRECTOR     TERM
NAME, AGE, PRINCIPAL OCCUPATION, AND OTHER DIRECTORSHIPS                                           SINCE     EXPIRES
- -----------------------------------------------------------------------------------------------  ---------  ---------
<S>                                                                                              <C>        <C>
NOMINEES
 
LARRY L. HANSEN, 69, retired in 1992 from the position of Executive Vice President of Tylan        1986       1998
  General Inc., a manufacturer of high technology components for industrial processes located
  in San Diego, California. Prior to December 1988 he was Executive Vice President and a
  Director of Varian Associates, Inc., an electronics manufacturer located in Palo Alto,
  California. Mr. Hansen is also a Director of Signal Technology Corp., and Micrel, Inc. Mr.
  Hansen is a member of the Compensation Committee of the Board of Directors.
 
VERNON B. RYLES, JR., 60, President and CEO of Poppers Supply Co., a manufacturer of popcorn       1995       1998
  snacks and jobber/distributor of recreational food and equipment. In addition, Mr. Ryles is
  on the Board of Directors of Northwest Pipe and Casing, a manufacturer of steel pipe. He is a
  Director and former Board Chairman of the National Association of Concessionaires and on the
  Advisory Council of the Oregon State University Agricultural Trade and Marketing Program. Mr.
  Ryles is a member of the Compensation Committee of the Board of Directors.
 
GERALD F. TAYLOR, 58, retired in 1998 as Senior Vice President and CFO of Applied Materials, a     1998       1998
  manufacturer of semi-conductor equipment. In addition, Mr. Taylor is on the Board of
  Directors of Integrated Sensor Solutions, Inc.
 
JON D. TOMPKINS, 58, Chairman of the Board of Directors of KLA-Tencor, a manufacturer of           1998       1998
  semiconductor equipment. In addition, Mr. Tompkins is on the Board of Directors of Varian
  Associates, Inc., an electronics manufacturer located in Palo Alto, California. Mr. Tompkins
  is a member of the Audit Committee of the Board of Directors.
 
DONALD R. VANLUVANEE, 54, President and CEO of ESI since July 1992. From 1991 to July 1992, Mr.    1992       1998
  VanLuvanee was President, Chief Executive Officer, and a Director at Mechanical Technology
  Incorporated (MTI), a supplier of contract research and development services and a
  manufacturer of technologically advanced equipment. Mr. VanLuvanee is also a Director of FEI
  Company, which designs, manufactures and markets focused ion beam workstations, and Micro
  Component Technology, Inc., a leading manufacturer of automated test handling equipment.
</TABLE>
 
                                       4
<PAGE>
<TABLE>
<CAPTION>
                                                                                                 DIRECTOR     TERM
NAME, AGE, PRINCIPAL OCCUPATION, AND OTHER DIRECTORSHIPS                                           SINCE     EXPIRES
- -----------------------------------------------------------------------------------------------  ---------  ---------
<S>                                                                                              <C>        <C>
DIRECTORS WHOSE TERMS CONTINUE
 
DAVID F. BOLENDER, 66, in March 1998, Mr. Bolender became CEO and Chairman of the Board of         1988       2000
  Directors of Protocol Systems, Inc., a manufacturer of vital sign monitoring equipment for
  the medical industry. Mr. Bolender retired in 1991 from the position of President of the
  Electric Operations Group of PacifiCorp, a diversified public utility located in Portland,
  Oregon. In January 1992, Mr. Bolender became Chairman of the Board of the Company. Mr.
  Bolender is a member of the Audit Committee of the Board of Directors.
 
W. ARTHUR PORTER, 57, in July 1998, Dr. Porter was appointed the Dean of the College of            1980       1999
  Engineering at the University of Oklahoma. He was formerly the President of the Houston
  Advanced Research Center. Dr. Porter is a Director of Stewart Information Services
  Corporation, and Medici Medical Group Inc. Dr. Porter, formerly Chairman of the Board of
  Directors, serves as Chairman of the Audit Committee of the Board of Directors.
 
DOUGLAS C. STRAIN, 78, Vice Chairman of the Board of Directors, formerly Chairman of the Board.    1949       1999
  Mr. Strain founded ESI. Mr. Strain is also a Director of Lattice Semiconductor Corporation.
  Mr. Strain is a member of the Audit Committee of the Board of Directors.
 
KEITH L. THOMSON, 59, retired as Vice President of Intel Corporation and Oregon Site Manager in    1994       2000
  1998. Mr. Thomson joined Intel in 1969 and moved to the Intel, Oregon operation in 1978.
  Prior to that he worked for Lockheed Missiles and Space Corporation, and the Semiconductor
  Division of Fairchild Camera and Instruments. Mr. Thomson was elected to the Board of
  Directors in 1994 and is the Chairman of the Compensation Committee of the Board of
  Directors.
</TABLE>
 
                               BOARD COMPENSATION
 
    The Board of Directors met eight times during the last fiscal year, of which
four were telephone meetings. Each Director attended at least 75 percent of the
aggregate of the meetings of the Board of Directors and the committees of which
he was a member. Each Director who is not an employee of the Company receives an
annual retainer of $10,000, plus $1,000 for each board meeting attended, $500
for each committee meeting attended and $500 for telephone meetings when formal
business is conducted. Non-employee directors are also automatically granted an
option for 3,000 shares of Common Stock on July 31 of each year, with an option
price equal to the closing market price on the date of grant, a ten-year term
and a four-year vesting schedule.
 
                                BOARD COMMITTEES
 
    The Board of Directors has standing Audit and Compensation Committees. The
Compensation Committee makes recommendations to the Board of Directors
concerning officers' compensation and has been delegated authority to grant
options and other awards under the Company's stock option plan and stock
incentive plan. It met four times in fiscal year 1998. The Audit Committee meets
with management, and with representatives of ESI's outside auditing firm, Arthur
Andersen LLP, including meetings without the presence of management. The Audit
Committee met four times in fiscal year 1998 to review the scope, timing and
fees for the annual audit and the results of the audit.
 
    Shareholders who wish to submit names for consideration for Board membership
should do so in writing addressed to the Board of Directors, c/o Chairman of the
Board, Electro Scientific Industries, Inc., 13900 NW Science Park Drive,
Portland, Oregon 97229-5497.
 
                                       5
<PAGE>
                             EXECUTIVE COMPENSATION
 
    The following table shows, as to the Chief Executive Officer and each of the
next four most highly compensated executive officers of the Company, information
concerning compensation paid for services to the Company in all capacities
during the fiscal year ended May 31, 1998, as well as total compensation paid to
each such individual for the Company's two previous fiscal years (if such person
was the Chief Executive Officer or an executive officer, as the case may be,
during any part of such fiscal year):
 
I. SUMMARY COMPENSATION TABLE
 
<TABLE>
<CAPTION>
                                                                               LONG-TERM COMPENSATION
                                                                               -----------------------
                                                      ANNUAL COMPENSATION      RESTRICTED
                                          FISCAL  ---------------------------     STOCK      OPTIONS       ALL OTHER
NAME & PRINCIPAL POSITION                  YEAR      SALARY          BONUS(1)   AWARDS(2)   GRANTED(#)  COMPENSATION(3)
- ----------------------------------------  ------  ------------       --------  -----------  ----------  ---------------
<S>                                       <C>     <C>                <C>       <C>          <C>         <C>
Donald R. VanLuvanee ...................   1998   $    312,750          --         --          26,900   $       4,000
Chief Executive Officer                    1997   $    285,000       $243,000  $  494,000       6,674   $       2,098
and President                              1996   $    281,212       $235,001      --           5,681   $         950
 
Barry L. Harmon ........................   1998   $    188,333          --         --           6,100   $       4,000
Chief Financial Officer                    1997   $    171,250       $ 56,285  $  454,800       3,430   $       2,098
and Sr. Vice President, Finance            1996   $    156,189       $107,633      --           3,974   $       2,022
 
Robert Belter(4) .......................   1998   $    177,083          --         --           2,400   $       4,000
Vice President                             1997   $      3,125       $    211      --          10,000
                                           1996        --               --         --          --
 
Joseph Z. Rivlin(5) ....................   1998   $    215,619(6)       --         --           2,400   $       4,000
Vice President                             1997   $    228,379(7)    $  3,698  $   64,500       3,430   $       2,098
                                           1996   $    152,424       $ 27,394      --           3,974   $      10,437  (8)
 
Jonathan C. Howell .....................   1998   $    166,667          --         --           6,100   $       4,000
Vice President                             1997   $    145,760       $ 43,296  $  300,000       3,430   $       2,098
                                           1996   $    128,881       $ 63,563      --           3,974   $       1,922
</TABLE>
 
- ------------------------
 
(1) Bonus for fiscal year 1998 performance has not yet been determined.
 
(2) Represents the closing market price of the Company's Common Stock on the
    date of grant multiplied by the number of shares awarded plus cash bonus to
    cover the tax obligation due at the time of vesting. Messrs. VanLuvanee,
    Harmon, Belter, Rivlin and Howell were awarded stock grants in the amount of
    11,500, 10,600, 0, 1,500 and 7,000 restricted shares in fiscal year 1997,
    respectively. Each award vested for 50% of the shares in April 1997 and for
    the remaining balance in April 1998. Performance-based restricted stock
    awards are not shown above, but instead are reported in the Long-Term
    Incentive Plans table below.
 
(3) Except as otherwise indicated, represents 401(k) matching contributions made
    by the Company.
 
(4) Mr. Belter was paid $255,000 for intellectual property, including a pending
    patent. This intellectual property was developed independently by Mr. Belter
    prior to his joining the Company.
 
(5) Mr. Rivlin resigned from the Company in July 1998.
 
(6) Includes $51,452 in commissions.
 
(7) Includes $75,046 in commissions.
 
(8) Includes $8,172 in relocation expenses
 
                                       6
<PAGE>
II. OPTIONS TABLE
 
    The following table sets forth details regarding stock options granted to
the named executive officers in fiscal year 1998. In addition, there are shown
the hypothetical gains or "option spreads" that would exist for the respective
options, assuming rates of annual compound stock appreciation of 5% and 10% from
the date the options were granted over the full option term.
 
<TABLE>
<CAPTION>
                                                                                                     POTENTIAL REALIZABLE
                                                      OPTION GRANTS IN LAST FISCAL YEAR                    VALUE AT
                                            ------------------------------------------------------   ASSUMED ANNUAL RATES
                                                            % OF TOTAL                                     OF STOCK
                                                              OPTIONS      EXERCISE                 PRICE APPRECIATION FOR
                                                            GRANTED TO      OR BASE                      OPTION TERM
                                               OPTIONS     EMPLOYEES IN      PRICE     EXPIRATION   ----------------------
NAME                                        GRANTED(1)(#)   FISCAL YEAR     ($/SH)        DATE          5%         10%
- ------------------------------------------  -------------  -------------  -----------  -----------  ----------  ----------
<S>                                         <C>            <C>            <C>          <C>          <C>         <C>
Donald R. VanLuvanee......................       17,000          15.6%     $   31.50      01/9/08   $  336,773  $  853,449
                                                  9,900           9.1%     $   37.81     04/03/08      235,407     596,568
 
Barry L. Harmon...........................        3,000           2.8%     $   31.50      01/9/08   $   59,431  $  150,609
                                                  3,100           2.8%     $   37.81     04/03/08       73,713     186,804
 
Robert Belter.............................        2,400           2.2%     $   37.81     04/03/08   $   57,068  $  144,623
 
Joseph Z. Rivlin..........................        2,400           2.2%     $   37.81     04/03/08   $   57,068  $  144,623
 
Jonathan C. Howell........................        3,000           2.8%     $   31.50      01/9/08   $   59,431  $  150,609
                                                  3,100           2.8%     $   37.81     04/03/08       73,713     186,804
</TABLE>
 
- ------------------------
 
(1) All options become exercisable for 25 percent of the shares covered by the
    option on each of the first four anniversaries of the grant date. The grant
    dates for the options shown in the table above were January 9, 1998 and
    April 3, 1998. All options become fully exercisable upon termination of the
    Optionee's employment within one year after a "change in control" of the
    Company as defined in the Stock Option Plan. Unless the transaction is
    approved by the Board of Directors, a "change in control" generally includes
    (a) the acquisition by any person of 20 percent or more of the Company's
    Common Stock and (b) the election of a new majority of the Company's
    directors without the approval of the incumbent directors.
 
III. OPTION EXERCISES AND FISCAL YEAR-END OPTION VALUE TABLE
 
    The following table sets forth information with respect to the named
executive officers concerning options exercised and the status of exercisable
and unexercisable options held as of May 31, 1998.
 
<TABLE>
<CAPTION>
                                          OPTIONS EXERCISED DURING
                                                    YEAR
                                             ENDED MAY 31, 1998                                    VALUE OF UNEXERCISED
                                          ------------------------    NUMBER OF UNEXERCISED       IN-THE-MONEY OPTIONS AT
                                            SHARES                   OPTIONS AT MAY 31, 1998           MAY 31, 1998
                                           ACQUIRED       VALUE     --------------------------  ---------------------------
NAME                                      ON EXERCISE   REALIZED    EXERCISABLE  UNEXERCISABLE  EXERCISABLE   UNEXERCISABLE
- ----------------------------------------  -----------  -----------  -----------  -------------  ------------  -------------
<S>                                       <C>          <C>          <C>          <C>            <C>           <C>
Donald R. VanLuvanee....................      15,000    $ 498,750       61,050        37,435    $  1,455,134   $   135,485
 
Barry L. Harmon.........................       5,240    $ 153,270       16,141        11,813    $    301,573   $    64,155
 
Robert Belter...........................      --           --            2,500         9,900    $      8,125   $    24,375
 
Joseph Z. Rivlin........................       5,912    $ 262,634        2,823         9,421    $     30,104   $    90,669
 
Jonathan C. Howell......................      --           --           15,740        11,294    $    321,316   $    59,221
</TABLE>
 
                                       7
<PAGE>
IV. LONG TERM INCENTIVE PLANS--AWARDS IN LAST FISCAL YEAR
 
    The following table sets forth information with respect to performance-based
restricted stock awards made to named executive officers in fiscal year 1998.
 
<TABLE>
<CAPTION>
                                                                        PERFORMANCES OR OTHER
                                                                               PERIOD
                                                                         UNTIL MATURATION OR
NAME                                             NUMBER OF SHARES             PAYOUT(1)
- ----------------------------------------------  -------------------  ---------------------------
<S>                                             <C>                  <C>
Donald R. VanLuvanee..........................           9,200                3 to 5 Years
 
Barry L. Harmon...............................           2,900                3 to 5 Years
 
Robert Belter.................................           2,300                3 to 5 Years
 
Joseph Z. Rivlin..............................           2,300                3 to 5 Years
 
Jonathan C. Howell............................           2,900                3 to 5 Years
</TABLE>
 
- ------------------------
 
(1) The base price for these awards is $37.81 per share, the closing market
    price of the Company's Common stock on April 3, 1998, the date of grant.
    Awards are subject to forfeiture unless (i) the market price of the Common
    Stock increases at a rate in excess of 15% per year, compounded annually,
    over a minimum 3-year period following the grant as measured based on the
    average closing price of the Company's Common Stock during any one of the
    eight fiscal quarters of the Company between June 1, 2001 and May 31, 2003
    and (ii) the award recipient is employed by the Company at the time the
    performance measure is achieved.
 
V. SEVERANCE AGREEMENTS
 
    In July 1991, the Board of Directors of the Company approved the Company's
entry into severance agreements with executive officers of the Company. These
agreements generally provide for the payment upon the termination of the
employee's employment by the Company without cause or by the employee for "good
reason" (as defined in the severance agreement) within two years following a
change of control of the Company of an amount equal to three times the
employee's annual salary and three years continued coverage under life, accident
and health plans. The benefit is capped as necessary to prevent any portion of
the benefit from being subject to excise tax. Each employee is obligated under
the severance agreement to remain in the employ of the Company for a period of
270 days following a "potential change in control" (as defined in the severance
agreements). All executive officers of the Company have executed severance
agreements.
 
                                       8
<PAGE>
VI.  PERFORMANCE GRAPH
 
EDGAR REPRESENTATION OF DATA POINTS USED IN PRINTED GRAPHIC
 
<TABLE>
<CAPTION>
INDEXED STOCK PRICE PERFORMANCE
 
<S>                              <C>        <C>              <C>
                                      ESIO    S&P 500 Index    S&P High Tech Index
5/31/1993                            100.0            100.0                  100.0
5/31/1994                            110.5            103.4                  110.7
5/31/1995                            256.6            118.5                  157.9
5/31/1996                            278.9            148.6                  207.7
5/30/1997                            400.0            188.4                  291.7
5/29/1998                            331.6            242.3                  368.3
</TABLE>
 
    Assumes that $100.00 was invested on May 31, 1993 in Electro Scientific
Industries, Inc. (ESIO) Common Stock, the S&P 500 and the S&P High Tech Index,
and that all dividends were reinvested.
 
<TABLE>
<CAPTION>
                                   ESIO       INDEX     S&P 500     INDEX     S&P HIGH TECH     INDEX
                                 ---------  ---------  ---------  ---------  ---------------  ---------
<S>                              <C>        <C>        <C>        <C>        <C>              <C>
5/31/1993......................  $    9.50      100.0     450.19      100.0        224.22         100.0
5/31/1994......................  $   10.50      110.5     465.50      103.4        248.29         110.7
5/31/1995......................  $   24.38      256.6     533.40      118.5        354.09         157.9
5/31/1996......................  $   26.50      278.9     669.12      148.6        465.73         207.7
5/30/1997......................  $   38.00      400.0     848.28      188.4        653.99         291.7
5/29/1998......................  $   31.50      331.6    1090.82      242.3        825.86         368.3
</TABLE>
 
            COMPENSATION COMMITTEE REPORT ON EXECUTIVE COMPENSATION
 
    The Compensation Committee of the Board of Directors makes recommendations
to the Board regarding the general compensation policies for ESI, including
salaries and incentives for executive officers. The Committee also has general
authority to make option grants and other awards under the Company's 1989 Stock
Option Plan and 1996 Stock Incentive Plan. The Committee is composed of three
directors.
 
    The Compensation Committee's executive compensation recommendations and
actions during the 1998 fiscal year were in three areas: (1) compensation
adjustments for the chief executive and other executive officers of the Company;
(2) the key employee cash incentive bonus program; and (3) the key employee long
term incentive program.
 
    The Compensation Committee policies for compensation of ongoing executive
officers are designed to fairly compensate the Company's executives and to
provide incentives for the officers to manage and operate the Company for long
term success. The Compensation Committee recommends, and the Board of Directors
determines based on such recommendation, compensation for the Chief Executive
Officer. The Compensation Committee also recommends compensation levels for the
remaining executive officers of the Company based on the recommendations of the
Chief Executive Officer.
 
                                       9
<PAGE>
    The total compensation of the executive officers takes into account several
factors, including competitive compensation in the electronics industry,
individual experience and performance, and the performance of the Company. The
Committee does not assign a specific weight to these factors. The Company
operates in marketplaces which are global, cyclical and subject to technology
shifts. The Committee's evaluations of individual performance considers the
leadership of each individual's contribution toward achieving the Company's
corporate objectives. The objectives include: (1) adequate return on, and
efficient use of, invested capital and (2) generating positive earnings
throughout the entire range of business conditions.
 
    The methodology used in determining salary, cash incentive bonus and
long-term incentive grants is as follows:
 
    Target compensation for each executive is set annually by the Compensation
Committee. These targets are based on the results of periodic salary surveys of
comparable-sized companies in the electronics industries conducted by the
Company's independent compensation consultants and on the level of individual
responsibility and job complexity. The Company's target is to pay executives at
the mid-point based on the surveys.
 
    Base salaries are determined annually for each executive officer with
reference to the target level for the individual. Salary increases are given
when warranted by individual performance and when base salary levels are
relatively low as compared to companies that compete with the Company for
executive talent to keep base salaries competitive.
 
    The Chief Executive's base salary was $312,750 during the fiscal year,
representing an increase of $27,750 from the prior year and a level at
approximately the mid-point of salary survey data.
 
    Cash incentives in the form of cash bonuses are paid at the discretion of
the Compensation Committee to executive officers who the Committee determines
have made substantial contributions to the profits of the Company in the
preceding fiscal year. At the beginning of each fiscal year, the Board of
Directors approves the business plan for the year, including sales and pre-tax
profit goals. At the same time, the Board of Directors approves a target bonus
percentage for executive officers if the established goals are met. If the goals
are met, the Compensation Committee determines, on an individual basis, the
extent to which the officer will be awarded the target bonus. Factors considered
include individual performance, responsibility and contribution to profits.
 
    The amounts of bonuses for officers for fiscal year 1998 have not been
determined, but are expected to be determined by the Compensation Committee and
approved by the Board of Directors in September 1998.
 
    The Company uses stock options and performance-based restricted stock grants
to reward senior management and to link executive compensation to shareholder
interests reflected in increases in share value. By using a combination of
annual options and restricted stock awards, the Company intends to provide a
potential level of incentive compensation to executive officers equal to
approximately 90% of competitive levels as determined by the Company's
compensation consultant, without excessive shareholder dilution. In determining
the size of option grants and restricted stock awards, the Compensation
Committee takes into account the executive's position and job responsibilities.
All options are granted at an exercise price equal to the fair market value of
the shares on the date of grant, and vest in 25 percent annual increments during
the four year period following the date of grant. The number of options granted
to executive officers in fiscal year 1998 was 80,200 including 26,900 to Donald
R. VanLuvanee. The number of shares of performance-based restricted stock
granted to executive officers in fiscal year 1998, was 30,000 including 9,200 to
Mr. VanLuvanee.
 
    DEDUCTIBILITY OF COMPENSATION.  Section 162(m) of the Internal Revenue Code
of 1986 limits to $1,000,000 per person the amount that the Company may deduct
for compensation paid to any of its most highly compensated officers in any
year. The levels of salary and bonus generally paid by the Company do not exceed
this limit. Substantially all of the options granted under the Company's 1989
Stock Option Plan have been Incentive Stock Options. The Company receives no tax
deduction from the exercise of an Incentive Stock Option unless the optionee
disposes of the acquired shares before satisfying certain
 
                                       10
<PAGE>
holding periods. Under IRS regulations, the $1,000,000 cap on deductibility
applies to compensation recognized by an optionee upon such an early
disposition, as well as compensation recognized upon the exercise of a
Nonstatutory Stock Option, unless the option meets certain requirements. It is
the Company's policy generally to grant options that meet the requirements of
the IRS regulations so that any such compensation recognized by an optionee will
be fully deductible. The Committee believes that the grant of Incentive Stock
Options, despite the general nondeductibility, benefits the Company by
encouraging the long-term ownership of Company stock by officers and other
employees. Performance-based restricted stock awards are also intended to be
granted in compliance with the IRS regulations so that any compensation
recognized on vesting of such awards will be fully deductible.
 
    By the Compensation Committee: Keith L. Thomson, Chairman; Larry L. Hansen,
and Vernon B. Ryles, Jr.
 
          COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION
 
    The Compensation Committee consists of Directors Keith L. Thomson, Larry L.
Hansen, and Vernon B. Ryles, Jr. No Compensation Committee member is or has been
an employee of the Company.
 
                PROPOSAL 2: AMENDMENT OF 1989 STOCK OPTION PLAN
 
    The Board of Directors has adopted, subject to shareholder approval, an
amendment to the Company's 1989 Stock Option Plan (the "Option Plan"). A copy of
the Option Plan, marked to show the proposed amendments, is attached to this
Proxy Statement as Appendix A.
 
PROPOSED AMENDMENT
 
    At May 31, 1998, only 93,263 shares of the Company's Common Stock were
available for future grants under the Option Plan. The Board of Directors
believes that additional shares must be reserved for use under the Option Plan
to enable the Company to attract and retain key employees and to provide an
incentive for them to exert their best efforts for the Company. Stock options
have historically been the principal long-term incentive compensation element of
the Company's officer and key employee compensation. Accordingly, the Board of
Directors has approved, subject to shareholder approval, a 500,000 share
increase in the number of shares reserved for issuance under the Option Plan to
a total of 2,200,000 shares. In addition, shareholder approval of Proposal 2
will constitute reapproval of the per-employee limit on grants of options under
the Option Plan of 250,000 shares annually. This reapproval is required every
five years for continued compliance with regulations under Section 162(m) of the
Internal Revenue Code of 1986. See "Tax Consequences."
 
DESCRIPTION OF THE OPTION PLAN
 
    ADMINISTRATION.  The Option Plan is administered by the Board of Directors,
which has general responsibility to interpret and administer the Option Plan. No
director may vote on any action relating to any award to that director. The
Board of Directors may delegate authority to administer the Option Plan to a
committee of the Board of Directors or specified officers of the Company, or
both, except that only the Board of Directors may amend, modify or terminate the
Option Plan. The Board of Directors has delegated to the Compensation Committee
of the Board (the "Committee") general authority for making option grants. The
Committee determines individuals to whom option grants are made under the Option
Plan and the price and terms of any such grants. The Board of Directors has also
delegated to the Chief Executive Officer of the Company authority to grant
options to employees who are not executive officers of the Company and to
establish the terms of such options, provided that such authority is limited to
option grants of no more than 5,000 shares per employee and 25,000 shares in the
aggregate per quarter.
 
    ELIGIBILITY.  Only employees of the Company or its subsidiaries (including
employees who are directors) are eligible to receive option grants under the
Option Plan. In addition, non-employee directors are eligible only for the
automatic annual option grants discussed herein.
 
                                       11
<PAGE>
    SHARES AVAILABLE.  The Option Plan currently provides that not more than
1,700,000 shares of Common Stock may be issued pursuant to the Option Plan. The
proposed amendments will increase the number of shares of Common Stock issuable
under the Option Plan by 500,000 shares to a total of 2,200,000 shares. Any
shares of Common Stock subject to an option that is canceled or expires will
again be available for award under the Option Plan.
 
    TERM OF PLAN.  The Option Plan will remain in effect indefinitely until
options have been granted and exercised with respect to all reserved shares.
 
    INCENTIVE STOCK OPTIONS.  The Option Plan authorizes the Board of Directors
to grant Incentive Stock Options, as defined in Section 422 of the Internal
Revenue Code of 1986, on terms and conditions it deems appropriate, subject to
the following: (1) the option price per share may not be less than 100 percent
of the fair market value of the Common Stock on the date the option is granted,
(2) the term of the option may not exceed 10 years from the date the option is
granted, (3) the purchase price of Common Stock on exercise of an option will be
paid in cash or by surrender to the Company of shares of previously acquired
Common Stock valued at fair market value on the date of the option exercise, (4)
an option will expire on the earlier of (i) the expiration of the term for which
it was granted, (ii) one year after termination of an Optionee's employment due
to death or physical disability, or (iii) three months after termination of an
Optionee's employment for any reason other than death or physical disability,
and (5) no Optionee may be granted Incentive Stock Options for Common Stock such
that the aggregate fair market value (determined on the date of grant) of shares
with respect to which Incentive Stock Options are exercisable for the first time
by that Optionee during any calendar year under the Option Plan or any other
stock option plan of the Company or any subsidiary of the Company exceeds
$100,000.
 
    NONSTATUTORY STOCK OPTIONS.  The Board of Directors may authorize the grant
of Nonstatutory Stock Options. The option price may not be less than 100 percent
of the fair market value of the Common Stock on the date the option is granted,
the term of the option may not exceed 10 years plus seven days, the purchase
price must be paid as described in clause (3) above and the period of time for
exercise is as referred to in clause (4) above.
 
    In the case of both Incentive Stock Options and Nonstatutory Stock Options,
upon termination of an Optionee's employment following a change of control, any
option held by the Optionee may be exercised for all the remaining shares
subject to the option, free of any limitation on the number of shares for which
the option may be exercised in any one year. In such a case, the option may be
exercised at any time before its expiration or the expiration of three months
after the date of termination of employment, whichever period is shorter. A
change of control is defined to include a change of control of a nature that
would be required to be reported in response to Item 6(e) of Schedule 14A of
Regulation 14A, including but not limited to the following events: the
acquisition by any person of 20 percent or more of the Company's outstanding
voting securities or the replacement within a two-year period of a majority of
the members of the Company's Board of Directors by persons other than incumbent
directors or persons approved by the incumbent directors.
 
    In addition, no employee may be granted options (Incentive or Nonstatutory)
for more than 250,000 shares in any fiscal year.
 
    NON-EMPLOYEE DIRECTOR OPTIONS.  Each director who is not a full-time
employee of the Company is automatically granted an option to purchase 3,000
shares of Company Common Stock on July 31 of each year. These automatic options
have an exercise price equal to 100% of fair market value on the date of grant
and a term of 10 years, and become exercisable for 25% of the shares on each of
the first four anniversaries of the grant date.
 
    STOCK APPRECIATION RIGHTS.  The Board of Directors may grant a stock
appreciation right (SAR) in connection with an option, or portion thereof, which
can be exercised when and to the same extent as the related option. Each SAR
will entitle the Optionee to surrender to the Company, unexercised, the related
option, or any portion thereof, and to receive in exchange consideration in cash
or shares of Common
 
                                       12
<PAGE>
Stock equal in value to the amount by which the fair market value of one share
of Common Stock exceeds the option price per share of the related option,
multiplied by the number of shares of the related option, or portion thereof,
being surrendered. The existence of SARs would require charges to income over
the life of the right based upon the amount of appreciation, if any, in the
market value of the Common Stock of the Company over the exercise price of
shares subject to SARs. No SARs have been granted under the Option Plan.
 
TAX CONSEQUENCES
 
    Certain options authorized to be granted under the Option Plan are intended
to qualify as Incentive Stock Options for federal income tax purposes. Under
federal income tax law currently in effect, the Optionee will recognize no
income upon grant or upon a proper exercise of an Incentive Stock Option. If an
employee exercises an Incentive Stock Option and does not dispose of any of the
option shares within two years following the date of grant and within one year
following the date of exercise, then any gain realized upon subsequent
disposition of the shares will be treated as income from the sale or exchange of
a capital asset. If an employee disposes of shares acquired upon exercise of an
Incentive Stock Option before the expiration of either the one-year holding
period or the two-year waiting period, any amount realized will be taxable as
ordinary compensation income in the year of such disqualifying disposition to
the extent that the lesser of the fair market value of the shares on the
exercise date or the fair market value of the shares on the date of disposition
exceeds the exercise price. The Company will not be allowed any deduction for
federal income tax purposes at either the time of the grant or exercise of an
Incentive Stock Option. Upon any disqualifying disposition by an employee, the
Company will generally be entitled to a deduction to the extent the employee
realized ordinary income.
 
    Certain options authorized to be granted under the Option Plan will be
treated as Nonstatutory Stock Options for federal income tax purposes. Under
federal income tax law presently in effect, no income is realized by the grantee
of a Nonstatutory Stock Option until the option is exercised. At the time of
exercise of a Nonstatutory Stock Option, the Optionee will realize ordinary
compensation income, and the Company will generally be entitled to a deduction,
in the amount by which the market value of the shares subject to the option at
the time of exercise exceeds the exercise price. The Company is required to
withhold on the income amount. Upon sale of shares acquired upon exercise of a
Nonstatutory Stock Option, the excess of the amount realized from the sale over
the market value of the shares on the date of exercise will be taxable.
 
    Under federal income tax law presently in effect, no income is realized by
the grantee of a SAR until the SAR is exercised. At the time of exercise of a
SAR, the grantee will realize ordinary compensation income, and the Company will
generally be entitled to a deduction, in an amount equal to the market value of
the shares or cash received. The Company is required to withhold on the income
amount.
 
    Section 162(m) of the Internal Revenue Code of 1986 limits to $1,000,000 per
person the amount that the Company may deduct for compensation paid to any of
its most highly compensated officers in any year. Under IRS regulations,
compensation received through the exercise of an option will not be subject to
the $1,000,000 limit if the option and the plan meet certain requirements. One
such requirement is shareholder approval at least once every five years of
per-employee limits on the number of shares as to which options may be granted.
Approval of this Proposal 2 will constitute reapproval of the per-employee
limits under the Option Plan previously approved by the shareholders. Other
requirements are that the option be granted by a committee of at least two
outside directors and that the exercise price of the option be not less than
fair market value of the Common Stock on the date of grant. Accordingly, the
Company believes that if this proposal is approved by shareholders, compensation
received on exercise of options granted under the Option Plan in compliance with
all of the above requirements will continue to be exempt from the $1,000,000
deduction limit.
 
                                       13
<PAGE>
RECOMMENDATION BY THE BOARD
 
    The Board of Directors recommends that the amendment to the Option Plan be
approved. The affirmative vote of the holders of a majority of the shares of
Common Stock present and entitled to vote on the matter is required to approve
this Proposal 2. Abstentions have the same effect as "no" votes in determining
whether the amendment is approved. Broker non-votes are counted for purposes of
determining whether a quorum exists at the Annual Meeting but are not counted
and have no effect on the results of the vote on Proposal 2. The proxies will be
voted for or against the amendment, or as an abstention, in accordance with the
instructions specified on the proxy form. If no instructions are given, proxies
will be voted for approval of the amendment to the Option Plan.
 
           PROPOSAL 3: AMENDMENT OF 1990 EMPLOYEE STOCK PURCHASE PLAN
 
    The Board of Directors has adopted, subject to shareholder approval, an
amendment to the Company's 1990 Employee Stock Purchase Plan (the "ESPP"). The
ESPP is intended to qualify as an "employee stock purchase plan" under Section
423 of the Internal Revenue Code of 1986. The ESPP permits all full-time
employees of the Company to acquire Common Stock through regular payroll
deductions of up to 15% of base pay plus commissions. A copy of the ESPP, marked
to show the proposed amendment, is attached to this Proxy Statement as Appendix
B.
 
PROPOSED AMENDMENT
 
    At May 31, 1998, 38,795 shares of Common Stock were available for purchase
under the ESPP out of the 300,000 shares reserved for issuance. In order to
provide additional opportunities for employees to participate in this benefit
and to be competitive with compensation plans provided by other companies in the
electronics industry, the Board of Directors has approved, subject to
shareholder approval, a 150,000 share increase in the shares reserved for the
ESPP to a total of 450,000 shares.
 
DESCRIPTION OF THE ESPP
 
    The essential features of the ESPP are outlined below.
 
    ELIGIBILITY.  Except as described below, all full-time employees of the
Company and designated subsidiaries, including employees who are officers or
directors, are eligible to participate in the ESPP. Any employee who owns or
would be deemed to own 5 percent or more of the voting power or value of all
classes of stock of the Company is ineligible to participate in the ESPP.
 
    PLAN OFFERINGS AND PURCHASE OF SHARES.  The ESPP provides for a series of
annual offerings ("Offerings"), with a new Offering commencing on January 8 of
each year and ending on January 7 of the following year. On the first trading
day of each Offering (the "Offering Date"), each eligible employee will
automatically be granted an option to purchase shares of Common Stock to be
automatically exercised on the last trading day of the Offering (the "Purchase
Date"). The ESPP includes special rules for participation by persons who become
eligible employees during an Offering. No option shall permit an employee to
purchase more than 3,000 shares or permit an employee's right to purchase shares
under the ESPP to accrue at a rate that exceeds $25,000 of fair market value
(determined at the Offering Date) for each calendar year that the option is
outstanding. Each eligible employee may elect to participate in the ESPP by
filing a subscription and payroll deduction authorization. Shares may be
purchased under the ESPP only through payroll deductions of not more than 15% of
an employee's base pay plus commissions. On the Purchase Date the amounts
withheld will be applied to purchase shares for the employee from the Company.
The purchase price will be the lesser of 85 percent of the closing market price
of the Common Stock on the Offering Date or on the Purchase Date.
 
    An employee may terminate participation in the ESPP by written notice to the
Company at least 10 days before the Purchase Date. The employee will then
receive all funds withheld from his or her pay and not yet used to purchase
shares. No interest will be paid on funds withheld from employees unless
otherwise determined by the Board of Directors. An employee may reinstate
participation in the ESPP, but
 
                                       14
<PAGE>
only after the first Purchase Date following termination. The rights of
employees under the ESPP are not transferable.
 
    ADMINISTRATION.  The ESPP is administered by the Board of Directors. The
Board of Directors may promulgate rules and regulations for the operation of the
ESPP, adopt forms for use in connection with the ESPP, decide any question of
interpretation of the ESPP or rights arising thereunder and generally supervise
the administration of the ESPP. The Company will pay all expenses of the ESPP
other than commissions on sales of shares for employees' accounts by the
custodian.
 
    CUSTODIAN.  An independent custodian maintains the records under the ESPP.
Shares purchased by employees under the ESPP are delivered to and held by the
custodian on behalf of the employees. By appropriate instructions from an
employee, all or part of the shares may be sold or transferred into the
employee's own name and delivered to the employee.
 
    AMENDMENTS.  The Board of Directors may amend the ESPP, except that without
the approval of the shareholders of the Company, the ESPP may not be amended to
increase the number of reserved shares or decrease the purchase price of shares.
The Board of Directors may terminate the ESPP at any time, except that
termination will not affect outstanding options.
 
TAX CONSEQUENCES
 
    The ESPP is intended to qualify as an "employee stock purchase plan" within
the meaning of Section 423 of the Internal Revenue Code of 1986. Under the
Internal Revenue Code of 1986, employees are not taxed on income or gain with
respect to the ESPP either at the Offering Date or at the Purchase Date. If an
employee disposes of the shares purchased under the ESPP more than two years
after the Offering Date, the employee will be required to report as ordinary
compensation income for the taxable year of disposition an amount equal to the
lesser of (1) the excess of the fair market value of the shares at the time of
disposition over the purchase price or (2) 15 percent of the fair market value
of the shares on the Offering Date. Any gain on the disposition in excess of the
amount treated as ordinary compensation income will be capital gain. In the case
of such a disposition, the Company will not be entitled to any deduction from
income.
 
    If an employee disposes of shares purchased under the ESPP within two years
after the Offering Date, the employee will be required to report the excess of
the fair market value of the shares on the Purchase Date over the purchase price
as ordinary compensation income for the year of disposition. Any difference
between the fair market value of the shares on the Purchase Date and the
disposition price will be capital gain or loss, either short-term or long-term
depending upon the employee's holding period for the shares. In the event of a
disposition within two years after the Offering Date, the Company will be
entitled to a deduction from income in the year of such disposition equal to the
amount that the employee is required to report as ordinary compensation income.
 
RECOMMENDATION BY THE BOARD
 
    The Board of Directors recommends that the amendment to the ESPP be
approved. If a quorum is present at the annual meeting, the amendment to the
ESPP will be approved if the votes cast in favor of the proposal exceed the
votes cast against the proposal. Abstentions and broker non-votes are counted
for purposes of determining whether a quorum exists at the Annual Meeting but
are not counted and have no effect on the results of the vote on Proposal 3. The
proxies will be voted for or against the amendment, or as an abstention, in
accordance with the instructions specified on the proxy form. If no instructions
are given, proxies will be voted for approval of the amendments to the ESPP.
 
               PROPOSAL 4: AMENDMENT OF 1996 STOCK INCENTIVE PLAN
 
    The Board of Directors has adopted, subject to shareholder approval, an
amendment to the Company's 1996 Stock Incentive Plan (the "Incentive Plan"). A
copy of the Incentive Plan, marked to show the proposed amendment, is attached
to this Proxy Statement as Appendix C.
 
                                       15
<PAGE>
PROPOSED AMENDMENT
 
    At May 31, 1998, only 25,831 shares of the Company's Common Stock were
available for future grants under the Incentive Plan. The Board of Directors
believes that additional shares must be reserved for issuance under the
Incentive Plan to enable the Company to attract and retain employees, officers
and directors and to provide an added incentive for them to exert their best
efforts on behalf of the Company. The Incentive Plan provides the Company with
the flexibility to make compensation arrangements, including awards of
restricted stock, that the Board of Directors believes are needed to compete
with other companies in the electronics industry. Accordingly, the Board of
Directors has approved, subject to shareholder approval, a 100,000 share
increase in the number of shares reserved for issuance under the Incentive Plan
to an aggregate of 250,000. In addition, shareholder approval of Proposal 4 will
constitute reapproval of the performance criteria on which Performance-Based
Awards may be based and the per-employee limits on Performance-Based Awards, as
described below under "Description of the Incentive Plan--Performance Based
Awards." This reapproval is required every five years for continued compliance
with regulations under Section 162(m) of the Internal Revenue Code of 1986. See
"Tax Consequences."
 
DESCRIPTION OF THE INCENTIVE PLAN
 
    ELIGIBILITY.  All employees, officers and directors of the Company and its
subsidiaries are eligible to receive awards under the Incentive Plan.
 
    SHARES AVAILABLE.  The Incentive Plan provides that not more than 150,000
shares of Common Stock may be issued pursuant to the Incentive Plan. The
proposed amendment will increase the number of shares issuable under the
Incentive Plan by 100,000 shares, to an aggregate of 250,000 shares.
 
    ADMINISTRATION.  The Incentive Plan is administered by the Board of
Directors, which may adopt rules and regulations for the operation of the
Incentive Plan and generally supervises the administration of the Incentive
Plan. The Board of Directors may delegate to a committee of the Board of
Directors or specified officers of the Company, or both, authority to administer
the Incentive Plan, except that only the Board of Directors may amend, modify or
terminate the Incentive Plan. The Board of Directors has delegated to the
Compensation Committee of the Board (the "Committee") general authority for
making awards under the Incentive Plan. The Committee determines individuals to
whom awards are made under the Incentive Plan and the terms of any such awards.
 
    TERM OF PLAN.  The Incentive Plan will continue until all shares available
for issuance under the Incentive Plan have been issued and all restrictions on
such shares have lapsed. The Board of Directors may suspend or terminate the
Incentive Plan at any time.
 
    STOCK BONUS AWARDS.  The Committee may award Common Stock as a stock bonus
under the Incentive Plan. The Committee may determine the persons to receive
awards, the number of shares to be awarded and the time of the award. No cash
consideration (other than tax withholding amounts) will be paid by employees to
the Company in connection with stock bonuses. Stock received as a stock bonus is
subject to the terms, conditions and restrictions determined by the Committee at
the time the stock is awarded. Restrictions may include restrictions concerning
transferability and forfeiture of the shares. Stock bonus shares which are
forfeited to the Company are again available for issuance under the Incentive
Plan.
 
    RESTRICTED STOCK.  The Incentive Plan provides that the Company may issue
restricted shares in such amounts, for such consideration (including promissory
notes and services), subject to such restrictions and on such terms as the
Committee may determine. Restrictions may include restrictions concerning
transferability, repurchase by the Company and forfeiture of the shares.
Restricted shares which are forfeited to or repurchased by the Company are again
available for issuance under the Incentive Plan.
 
    PERFORMANCE-BASED AWARDS.  The Committee may grant Performance-based Awards
denominated either in Common Stock or in dollar amounts. All or part of the
awards will be earned if performance goals established by the Committee for the
period covered by the award are met and the employee satisfies any other
restrictions established by the Committee. The performance goals may be
expressed as one or more
 
                                       16
<PAGE>
targeted levels of performance with respect to one or more of the following
objective measures with respect to the Company or any subsidiary, division or
other unit of the Company: earnings, earnings per share, stock price increase,
total shareholder return (stock price increase plus dividends), return on
equity, return on assets, economic value added, revenues, operating income,
inventories, inventory turns, cash flows or any of the foregoing before the
effect of acquisitions, divestitures, accounting changes, and restructuring and
special charges. Economic value added means operating income after taxes minus a
charge for the cost of capital. Performance-based Awards may be paid in cash or
Common Stock and may be made as awards of restricted shares subject to
forfeiture if performance goals are not satisfied, as determined by the
Committee. No employee may receive in any fiscal year Performance-based Awards
denominated in Common Stock under which more than 100,000 shares may be issued
or Performance-based Awards denominated in dollars under which more than
$750,000 may be paid. The payment of a Performance-based Award in cash will not
reduce the number of shares reserved under the Incentive Plan.
 
    CHANGES IN CAPITAL STRUCTURE.  The Incentive Plan provides that if the
outstanding Common Stock is increased or decreased or changed into or exchanged
for a different number or kind of shares or other securities of the Company by
reason of any stock split, stock dividend or recapitalization, appropriate
adjustment will be made by the Committee in the number and kind of shares
available for awards under the Incentive Plan.
 
TAX CONSEQUENCES
 
    An employee who receives stock in connection with the performance of
services will generally realize taxable income at the time of receipt unless the
shares are substantially nonvested for purposes of Section 83 of the Internal
Revenue Code of 1986. Absent an election under Section 83(b), an employee who
receives substantially nonvested stock in connection with performance of
services will realize taxable income in each year in which a portion of the
shares substantially vest. The Company will generally be entitled to a tax
deduction in the amount includible as income by the employee at the same time or
times as the employee recognizes income with respect to the shares.
 
    Section 162(m) of the Internal Revenue Code of 1986 limits to $1,000,000 per
person the amount that the Company may deduct for compensation paid to any of
its most highly compensated officers in any year. Under IRS regulations,
compensation received through a performance-based award will not be subject to
the $1,000,000 limit if the performance-based award and the plan meet certain
requirements. One such requirement is shareholder approval at least once every
five years of the performance criteria upon which award payouts will be based
and the maximum amount payable under awards, both of which are set forth in
Section 8 of the Incentive Plan. Approval of this Proposal 4 will constitute
reapproval of the performance criteria and limits on awards under the Incentive
Plan previously approved by the shareholders. Other requirements are that
objective performance goals and the amounts payable upon achievement of the
goals be established by a committee of at least two outside directors and that
no discretion be retained to increase the amount payable under the awards. The
Company believes that, if this proposal is approved by the shareholders,
compensation received on vesting of Performance-based Awards granted under the
Incentive Plan in compliance with all of the above requirements will not be
subject to the $1,000,000 deduction limit.
 
RECOMMENDATION BY THE BOARD
 
    The Board of Directors recommends that the amendment to the Incentive Plan
be approved. The affirmative vote of the holders of a majority of the shares of
Common Stock present and entitled to vote on the matter is required to approve
this Proposal 4. Abstentions have the same effect as "no" votes in determining
whether the amendment is approved. Broker non-votes are counted for purposes of
determining whether a quorum exists at the Annual Meeting but are not counted
and have no effect on the results of the vote on Proposal 4. The proxies will be
voted for or against the amendment, or as an abstention, in accordance with the
instructions specified on the proxy form. If no instructions are given, proxies
will be voted for approval of the amendment to the Incentive Plan.
 
                                       17
<PAGE>
                 PROPOSAL 5: APPROVAL OF SELECTION OF AUDITORS
 
    The Board of Directors has selected Arthur Andersen LLP as the Company's
independent auditors for the fiscal year ending May 31, 1999 and is submitting
the selection to shareholders for approval. Arthur Andersen LLP are independent
certified public accountants and have audited the accounts of the Company and
its subsidiaries since 1983. Proxies will be voted in accordance with the
instructions specified in the proxy form. If no instructions are given, proxies
will be voted for approval of Arthur Andersen LLP as independent auditors.
Representatives of Arthur Andersen LLP are expected to be present at the Annual
Meeting, will be given the opportunity to make a statement if they desire to do
so, and will be available to respond to appropriate questions.
 
            SECTION 16(a) BENEFICIAL OWNERSHIP REPORTING COMPLIANCE
 
    Section 16(a) of the Securities Exchange Act of 1934 requires the Company's
executive officers, directors and persons who own more than ten percent of the
Common Stock to file reports of ownership and changes in ownership with the
Securities and Exchange Commission ("SEC"). Executive officers, directors and
beneficial owners of more than ten percent of the Common Stock are required by
SEC regulations to furnish the Company with copies of all Section 16(a) forms
they file. Based solely on a review of the copies of such forms received by the
Company and on written representations from certain reporting persons that they
have complied with the relevant filing requirements, the Company believes that
all Section 16(a) filing requirements applicable to its executive officers and
directors for transactions during fiscal 1998 were complied with, except that,
due to a clerical error, Joseph Z. Rivlin was late in reporting one transaction
during fiscal year 1998.
 
                            DISCRETIONARY AUTHORITY
 
    While the Notice of Annual Meeting of Shareholders provides for transaction
of such other business as may properly come before the meeting, the Board of
Directors has no knowledge of any matters to be presented at the meeting other
than those referred to herein. However, the enclosed proxy gives discretionary
authority to the proxy holders to vote in accordance with the recommendation of
management if any other matters are presented.
 
                             SHAREHOLDER PROPOSALS
 
    Any shareholder proposals to be considered for inclusion in proxy material
for the Company's next annual meeting in September 1999 must be received at the
principal executive office of the Company no later than April 26, 1999. In
connection with any matter proposed by a shareholder at the 1999 annual meeting,
but not proposed for inclusion in Company proxy material, the Company may
exercise discretionary voting authority with respect to proxies solicited for
that meeting if appropriate notice of the shareholder proposal is not received
by the Company at its principal executive office by July 9, 1999.
 
                                          By Order of the Board of Directors
 
                                          Joseph L. Reinhart
                                          VICE PRESIDENT AND CORPORATE SECRETARY
 
Portland, Oregon
August 24, 1998
 
                                       18
<PAGE>
                                   APPENDIX A
                      ELECTRO SCIENTIFIC INDUSTRIES, INC.
                            1989 STOCK OPTION PLAN*
 
    1.  PURPOSE.  The purpose of this 1989 Stock Option Plan (the "Plan") is to
enable Electro Scientific Industries, Inc. (the "Company") to attract and retain
people of training, experience, and ability, and to provide additional incentive
to employees and non-employee directors by giving them an opportunity to
participate in the ownership of the Company, thereby stimulating their efforts
on the Company's behalf and strengthening their desire to remain with the
Company.
 
    2.  SHARES SUBJECT TO THE PLAN.  Except as provided in Paragraph 15, the
total number of shares of the Company's Common Stock, without par value ("Common
Stock"), covered by all options granted under the Plan shall not exceed
2,200,000 [1,700,000] authorized but unissued or reacquired shares. In the event
any option under the Plan expires or is canceled or terminated and is
unexercised in whole or in part, the shares allocable to the unexercised portion
shall again become available for options under the Plan.
 
    3.  DURATION OF THE PLAN.  The Plan shall continue in effect until options
have been granted and exercised with respect to all of the shares available for
the Plan under paragraph 2 (subject to any adjustments under paragraph 15),
unless sooner terminated by action of the Board of Directors of the Company (the
"Board of Directors"). The Board of Directors shall have the right to suspend or
terminate the Plan at any time except with respect to options then outstanding
under the Plan.
 
    4.  ADMINISTRATION.  The Plan shall be administered by the Board of
Directors of the Company, which shall determine and designate from time to time
the employees to whom options shall be granted and the number of shares, the
option price, the period of each option, and the time or times at which options
may be exercised. Subject to the provisions of the Plan, the Board of Directors
may from time to time adopt rules and regulations relating to administration of
the Plan, and the interpretation and construction of the provisions of the Plan
by the Board of Directors shall be final and conclusive. No director who holds
or is eligible to hold an option under the Plan, other than an option under
Paragraph 16, shall vote upon any action taken by the Board of Directors
involving such matter. The Board of Directors, if it so determines, may delegate
to a committee of the Board of Directors, or specified officers of the Company,
or both (the "Committee") any or all authority for administration of the Plan.
If authority is delegated to a Committee, all references to the Board of
Directors in the Plan shall mean and relate to the Committee except (i) as
otherwise provided by the Board of Directors, and (ii) that only the Board of
Directors may terminate or amend the Plan as provided in paragraphs 3 and 19.
 
    5.  GRANTS.
 
    (a) Options granted under the Plan may be Incentive Stock Options, as
defined in Section 422 of the Internal Revenue Code of 1986, as amended (the
"Code"), or Non-Statutory Stock Options. For the purpose of the Plan, a
Non-Statutory Stock Option means an option other than an Incentive Stock Option.
The Board of Directors or Committee, as the case may be, has the sole discretion
to determine which options shall be Incentive Stock Options and which options
shall be Non-Statutory Stock Options, and shall specifically designate each
option granted under the Plan as an Incentive Stock Option or Non-Statutory
Stock Option. No Incentive Stock Option may be granted under the Plan on or
after the tenth anniversary of the last action by the Board of Directors
approving an increase in the number of shares available for issuance under the
Plan, which action was subsequently approved within 12 months by the
shareholders.
 
    (b) No employee may be granted Incentive Stock Options under the Plan such
that the aggregate fair market value, on the date of grant, of the stock with
respect to which Incentive Stock Options are exercisable for the first time by
the employee during any calendar year under the Plan and under any other
 
- ------------------------
 
*   NOTE: Underlined matter is new; matter in [BRACKETS AND ITALICS] is to be
    deleted.
 
                                      A-1
<PAGE>
incentive stock option plan (within the meaning of Section 422 of the Code) of
the Company or any parent or subsidiary of the Company exceeds $100,000.
 
    (c) No employee may be granted options under the Plan for more than 250,000
shares of Common Stock in any fiscal year.
 
    6.  ELIGIBILITY.  Incentive Stock Options and Non-Statutory Stock Options
may be granted under the Plan to employees of the Company or any parent or
subsidiary of the Company (including employees who are directors). Directors who
are not employees shall only be eligible to receive options granted pursuant to
paragraph 16.
 
    7.  OPTION PRICE.  The option price per share under each option granted
under the Plan shall be determined by the Board of Directors at the time of
grant. Except as provided in paragraph 9, the option price shall be not less
than 100 percent of the fair market value of the shares covered by the option on
the date the option is granted. The fair market value of shares covered by an
option shall be deemed to be the last price for the Common Stock as reported to
NASDAQ and published in the Wall Street Journal for the day preceding the date
of grant, or such other value of the Common Stock as shall be determined by the
Board of Directors of the Company.
 
    8.  DURATION OF OPTIONS.  Subject to paragraphs 9 and 13, each option
granted under the Plan shall continue in effect for the period fixed by the
Board of Directors, except that no Incentive Stock Option shall be exercisable
after ten years from the date it is granted and no Non-Statutory Stock Option
shall be exercisable after the expiration of 10 years plus seven days from the
date it is granted.
 
    9.  LIMITATIONS ON GRANTS TO 10 PERCENT SHAREHOLDERS.  An Incentive Stock
Option may be granted under the Plan to an employee possessing more than 10
percent of the total combined voting power of all classes of stock of the
Company or of any parent or subsidiary of the Company only if the option price
is at least 110 percent of the fair market value of the stock subject to the
option on the date it is granted, as described in paragraph 7, and the Incentive
Stock Option by its terms is not exercisable after the expiration of five years
from the date it is granted.
 
    10.  EXERCISE OF OPTIONS.  Options granted under the Plan may be exercised
from time to time over the period stated in each option in such amounts and at
such times as shall be prescribed by the Board of Directors. If the optionee
does not exercise an option in any one year with respect to the full number of
shares to which the optionee is entitled in that year, the optionee's rights
shall be cumulative and the optionee may purchase those shares in any subsequent
year during the term of the option.
 
    11.  LIMITATION ON RIGHTS TO EXERCISE.  Except as provided in paragraph 13
or as otherwise approved by the Board of Directors, no option granted under the
Plan may be exercised unless at the time of such exercise the optionee is
employed by or a director of the Company or any parent or subsidiary of the
Company and shall have been so employed or engaged continuously since the date
such option was granted. Absence on leave or on account of illness or disability
under rules established by the Board of Directors shall not, however, be deemed
an interruption of employment for this purpose.
 
    12.  NONASSIGNABILITY.  Each option granted under the Plan by its terms
shall be nonassignable and nontransferable by the optionee except by will or by
the laws of descent and distribution of the state or country of the optionee's
domicile at the time of death, and each such option by its terms shall be
exercisable during the optionee's domicile at the time of death, and each such
option by its terms shall be exercisable during the optionee's lifetime only by
the optionee.
 
    13.  TERMINATION OF EMPLOYMENT.
 
    (a) In the event the employment of an optionee by the Company or by any
parent or subsidiary of the Company is terminated by retirement or for any
reason, voluntarily or involuntarily with or without cause, other than in the
circumstances specified in subsection (b) or (c) below, any option held by such
optionee may be exercised at any time prior to its expiration date or the
expiration of three months after the date of
 
                                      A-2
<PAGE>
such termination of employment, whichever is the shorter period, but only if and
to the extent the optionee was entitled to exercise the option on the date of
such termination.
 
    (b) In the event an optionee's employment by the Company or by any parent or
subsidiary of the Company is terminated because of death or physical disability
(within the meaning of Section 22(e)(3) of the Code), any option held by such
optionee may be exercised with respect to all remaining shares subject thereto,
free of any limitation on the number of shares with respect to which the option
may be exercised in any one year, at any time prior to its expiration date or
the expiration of one year after the date of such termination, whichever is the
shorter period. If an optionee's employment is terminated by death, any option
held by the optionee shall be exercisable only by the person or persons to whom
such optionee's rights under such option shall pass by the optionee's will or by
the laws of descent and distribution of the state or country of the optionee's
domicile at the time of death.
 
    (c) In the event an optionee's employment by the Company or by any parent or
subsidiary of the Company terminates within one year after a change in control
of the Company for any reason other than retirement, death, or physical
disability (within the meaning of Section 22(e)(3) of the Code), any option held
by such optionee may be exercised with respect to all remaining shares subject
thereto, free of any limitation on the number of shares with respect to which
the option may be exercised in any one year, at any time prior to its expiration
date or the expiration of three months after the date of such termination of
employment, whichever is the shorter period. A "change in control of the
Company" shall mean a change in control of a nature that would be required to be
reported in response to item 6(e) of Schedule 14A of Regulation 14A promulgated
under the Securities Exchange Act of 1934, as amended ("Exchange Act"); provided
that, without limitation, such a change in control shall be deemed to have
occurred if (1) any "person" (as such term is used in Sections 13(d) or 14(d)(2)
of the Exchange Act) is or becomes the beneficial owner, directly or indirectly,
of securities of the Company representing 20 percent or more of the combined
voting power of the Company's then outstanding securities; or (2) during any
period of two consecutive years, individuals who at the beginning such period
constitute the Board of Directors of the Company cease for any reason to
constitute at least a majority thereof unless the election, or the nomination
for election by the Company's shareholders, of each new director was approved by
a vote of at least two-thirds of the directors then still in office who were
directors at the beginning of the period. A change in control of the Company
shall not include any change in control pursuant to a written agreement between
the Company and another person, which agreement is approved and adopted by the
Board of Directors of the Company or pursuant to any tender offer or exchange
offer which the Board of Directors has in any manner recommended acceptance of
to the shareholders of the Company.
 
    (d) Unless otherwise approved by the Board of Directors, to the extent an
option held by any deceased optionee or by any optionee whose employment is
terminated shall not have been exercised within the limited periods provided
above, all further rights to purchase shares pursuant to such option shall cease
and terminate at the expiration of such periods.
 
    14.  PURCHASE OF SHARES.  Shares may be purchased or acquired pursuant to an
option granted under the Plan only upon receipt by the Company of notice in
writing from the optionee of the optionee's intention to exercise, specifying
the number of shares as to which the optionee desires to exercise the option and
the date on which the optionee desires to complete the transaction, which shall
not be more than 30 days after receipt of the notice, and, unless in the opinion
of counsel for the Company such a representation is not required in order to
comply with the Securities Act of 1933, as amended, containing a representation
that it is the optionee's present intention to acquire the shares for investment
and not with a view to distribution. On or before the date specified for
completion of the purchase of shares pursuant to an option, the optionee must
have paid the Company the full purchase price of such shares in cash (including
cash which may be the proceeds of a loan from the Company), in shares of Common
Stock of the Company previously acquired and held for not less than one year by
the optionee, valued at fair market value as defined in paragraph 7, or in any
combination of cash and shares of Common Stock of the Company. No shares shall
be issued until full payment therefor has been made, and an optionee shall have
 
                                      A-3
<PAGE>
none of the rights of a shareholder until a certificate for shares is issued to
such optionee. Each optionee who has exercised an option shall, upon
notification of the amount due, if any, and prior to or concurrently with
delivery of the certificates representing the shares with respect to which the
option was exercised, pay to the Company amounts necessary to satisfy any
applicable federal, state and local withholding tax requirements. If additional
withholding becomes required beyond any amount deposited before delivery of the
certificates, the optionee shall pay such amount to the Company on demand.
 
    15.  CHANGES IN CAPITAL STRUCTURE.  In the event that the outstanding shares
of Common Stock of the Company are hereafter increased or decreased or changed
into or exchanged for a different number or kind of shares or other securities
of the Company or another corporation, by reason of any reorganization, merger,
consolidation, recapitalization, reclassification, stock split-up, combination
of shares, or dividend payable in shares, appropriate adjustment shall be made
by the Board of Directors in the number and kind of shares for the purchase of
which options may be granted under the Plan. In addition, the Board of Directors
shall make appropriate adjustment in the number and kind of shares as to which
outstanding options, or portions thereof then unexercised, shall be exercisable,
to the end that each optionee's proportionate interest shall be maintained as
before the occurrence of such event. Such adjustment in outstanding options
shall be made without change in the total price applicable to the unexercised
portion of any option and with a corresponding adjustment in the option price
per share. Any such adjustment made by the Board of Directors shall be
conclusive. In the event of dissolution or liquidation of the Company or a
merger or consolidation in which the Company is not the surviving corporation,
in lieu of providing for options as provided for above in this paragraph 15, the
Board of Directors may, in its sole discretion, provide a 30-day period
immediately prior to such event during which optionees shall have the right to
exercise options in whole or in part without any limitation on exercisability.
 
    16.  OPTION GRANTS TO NON-EMPLOYEE DIRECTORS.
 
    (a)  ANNUAL GRANTS.  Each Non-Employee Director shall be automatically
granted an option to purchase 3,000 shares of Common Stock on July 31 of each
year, provided the Non-Employee Director is a director on such date. A
"Non-Employee Director" is a director who is not a full-time employee of the
Company or any of its subsidiaries and has not been a full-time employee of the
Company or any of its subsidiaries within one year of any date as of which a
determination of eligibility is made. The increase in the number of shares
covered by options automatically granted under this paragraph 16 as of July 31,
1996 from 1,000 to 3,000 shares shall be subject to and conditioned upon
approval by the shareholders at the 1996 annual meeting of shareholders of the
amendment to this paragraph 16 to the Plan.
 
    (b)  EXERCISE PRICE.  The exercise price of the options granted pursuant to
this paragraph 16 shall be equal to 100 percent of the fair market value of the
Common Stock determined pursuant to paragraph 7.
 
    (c)  TERM OF OPTION.  The term of each option granted pursuant to this
paragraph 16 shall be 10 years from the date of grant.
 
    (d)  EXERCISABILITY.  Until an option expires or is terminated and except as
provided in paragraphs 16(e) and 15, an option granted under this paragraph 16
shall be exercisable according to the following schedule:
 
<TABLE>
<CAPTION>
PERIOD OF NON-EMPLOYEE DIRECTORS' CONTINUOUS SERVICE AS A                 PORTION OF TOTAL OPTION
DIRECTOR OF THE COMPANY FROM THE DATE THE OPTION IS GRANTED                WHICH IS EXERCISABLE
- -----------------------------------------------------------------------  -------------------------
<S>                                                                      <C>
Less than 1 year.......................................................                  0%
After 1 year...........................................................                 25%
After 2 years..........................................................                 50%
After 3 years..........................................................                 75%
After 4 years..........................................................                100%
</TABLE>
 
    (e)  TERMINATION AS A DIRECTOR.  If an optionee ceases to be a director of
the Company for any reason, other than death or physical disability (within the
meaning of Section 22(e)(3) of the Code), the option
 
                                      A-4
<PAGE>
may be exercised at any time prior to the expiration date of the option or the
expiration of three months after the last day the optionee served as a director,
whichever is the shorter period, but only if and to the extent the optionee was
entitled to exercise the option as of the last day the optionee served as a
director. If an optionee ceases to be a director of the Company as a result of
death or physical disability (within the meaning of Section 22(e)(3) of the
Code), the option may be exercised with respect to all remaining shares subject
thereto, free of any limitation on the number of shares with respect to which
the option may be exercised in any one year, at any time prior to the expiration
date of the option or the expiration of one year after the last day the optionee
served as a director, whichever is the shorter period.
 
    (f)  EXERCISE OF OPTIONS.  Options may be exercised upon payment of cash or
shares of Common Stock of the Company in accordance with paragraph 14.
 
    17.  STOCK APPRECIATION RIGHTS.
 
    (a)  GRANT.  Stock appreciation rights may be granted under the Plan by the
Board of Directors, subject to such rules, terms and conditions as the Board of
Directors may prescribe; provided, however, that stock appreciation rights may
only be granted in connection with an option grant or in connection with an
outstanding option previously granted under the Plan and shall not be assignable
other than in conjunction with assignment of the related option pursuant to
paragraph 12.
 
    (b)  EXERCISE.
 
        (i) A stock appreciation right shall be exercisable only at the time or
    times established by the Board of Directors and only to the extent and on
    the same conditions that the related option could be exercised. Upon
    exercise of a stock appreciation right, the option or portion thereof to
    which the stock appreciation right relates must be surrendered. No stock
    appreciation right may be exercised during the six-month period following
    the date it is granted. Option shares with respect to which a stock
    appreciation right has been exercised may not again be subjected to options
    under the Plan.
 
        (ii) The Board of Directors may withdraw any stock appreciation right
    granted under the Plan at any time and may impose any conditions upon the
    exercise of a stock appreciation right or adopt rules and regulations from
    time to time affecting the rights of holders of stock appreciation rights.
    Such rules and regulations may govern the right to exercise stock
    appreciation rights prior to the adoption or amendment of such rules and
    regulations as well as stock appreciation rights granted thereafter.
 
       (iii) Each stock appreciation right shall entitle the holder, upon
    exercise, to receive from the Company in exchange therefor an amount equal
    in value to the excess of the fair market value on the date of exercise of
    one share of Common Stock of the Company over the option price per share to
    which the stock appreciation right relates, times the number of shares
    covered by the option, or portion thereof, which is surrendered. No stock
    appreciation right shall be exercisable at a time that the amount determined
    under this subparagraph is negative. Payment upon exercise of a stock
    appreciation right by the Company may be made in Common Stock valued at its
    fair market value, or in cash, or partly in shares and partly in cash, all
    as shall be determined by the Board of Directors.
 
        (iv) The fair market value of the Common Stock shall be determined as
    specified in paragraph 7.
 
        (v) Shares issued upon exercise of a stock appreciation right may
    consist either in whole or in part of authorized and unissued Common Stock
    or issued Common Stock held as treasury shares. No fractional shares shall
    be issued upon exercise of a stock appreciation right. In lieu thereof, cash
    may be paid in an amount equal to the value of the fraction or, if the Board
    of Directors shall determine, the number of shares may be rounded downward
    to the next whole share.
 
        (vi) In the event of any adjustment, pursuant to paragraph 15, in the
    number of shares of Common Stock subject to an option granted under the
    Plan, the stock appreciation rights granted hereunder in connection with
    such option shall be proportionately adjusted.
 
                                      A-5
<PAGE>
    18.  CORPORATE MERGERS, ACQUISITION, ETC.  The Board of Directors may also
grant options and stock appreciation rights having terms and provisions which
vary from those specified in this Plan provided that any options and stock
appreciation rights granted pursuant to this section are granted in substitution
for, or in connection with the assumption of, existing options and stock
appreciation rights granted by another corporation and assumed or otherwise
agreed to be provided for by the Company pursuant to or by reason of a
transaction involving a corporate merger, consolidation, acquisition of property
or stock, separation, reorganization or liquidation to which the Company or a
subsidiary is a party.
 
    19.  AMENDMENT OF PLAN.  The Board of Directors may at any time and from
time to time modify or amend the Plan in such respects as it shall deem
advisable because of changes in the law while the Plan is in effect or for any
other reason. Except as provided in paragraph 15, however, no change in an
option already granted to an employee shall be made without the written consent
of such employee. Furthermore, unless approved by the shareholders at an annual
meeting or a special meeting, no amendment or change shall be made in the Plan
(a) increasing the total number of shares which may be purchased under the Plan,
(b) changing the minimum option price specified in the Plan, (c) increasing the
maximum option period, or (d) materially modifying the requirements for
eligibility for participation in the Plan.
 
    20.  APPROVALS.  The obligations of the Company under the Plan shall be
subject to the approval of such state or federal authorities or agencies, if
any, as may have jurisdiction in the matter. The Company will use its best
efforts to take such steps as may be required by state or federal law or
applicable regulations, including rules and regulations of the Securities and
Exchange Commission and any stock exchange in which the Company's shares may
then be listed, in connection with the granting of any option under the Plan,
the issuance or sale of any shares purchased upon exercise of any option under
the Plan, or the listing of such shares on said exchange. The foregoing
notwithstanding, the Company shall not be obligated to issue or deliver shares
of Common Stock under the Plan if the Company is advised by the legal counsel
that such issuance or delivery would violate applicable state of federal
securities laws.
 
    21.  EMPLOYMENT RIGHTS.  Nothing in the Plan or any option granted pursuant
to the Plan shall confer upon any optionee any right to be continued in the
employment of the Company or any parent or subsidiary of the Company, or to
interfere in any way with the right of the Company or any parent or subsidiary
of the Company by whom such optionee is employed to terminate such optionee's
employment at any time, with or without cause.
 
                                      A-6
<PAGE>
                                   APPENDIX B
                      ELECTRO SCIENTIFIC INDUSTRIES, INC.
                       1990 EMPLOYEE STOCK PURCHASE PLAN*
 
    1.  PURPOSE OF THE PLAN.  Electro Scientific Industries, Inc. (the
"Company") believes that ownership of shares of its common stock by employees of
the Company and its Participating Subsidiaries (hereinafter defined) is
desirable as an incentive to better performance and improvement of profits, and
as a means by which employees may share in the rewards of growth and success.
The purpose of the Company's 1990 Employee Stock Purchase Plan (the "Plan") is
to provide a convenient means by which employees of the Company and
Participating Subsidiaries may purchase the Company's shares through payroll
deductions and a method by which the Company may assist and encourage such
employees to become share owners.
 
    2.  SHARES RESERVED FOR THE PLAN.  There are 450,000 [300,000] shares of the
Company's authorized but unissued or reacquired Common Stock, no par value,
reserved for purposes of the Plan. The number of shares reserved for the Plan is
subject to adjustment in the event of any stock dividend, stock split,
combination of shares, recapitalization or other change in the outstanding
Common Stock of the Company. The determination of whether an adjustment shall be
made and the manner of any such adjustment shall be made by the Board of
Directors of the Company, which determination shall be conclusive.
 
    3.  ADMINISTRATION OF THE PLAN.  The Plan shall be administered by the Board
of Directors. The Board of Directors may promulgate rules and regulations for
the operation of the Plan, adopt forms for use in connection with the Plan, and
decide any question of interpretation of the Plan or rights arising thereunder.
The Board of Directors may consult with counsel for the Company on any matter
arising under the Plan. All determinations and decisions of the Board of
Directors shall be conclusive. Notwithstanding the foregoing, the Board of
Directors, if it so desires, may delegate to the Compensation Committee of the
Board the authority for general administration of the Plan.
 
    4.  ELIGIBLE EMPLOYEES.  Except as indicated below, all full-time employees
of the Company and all full-time employees of each of the Company's subsidiary
corporations which is designated by the Board of Directors of the Company as a
participant in the Plan (such participating subsidiary being hereinafter called
a "Participating Subsidiary") are eligible to participate in the Plan. Any
employee who would, after a purchase of shares under the Plan, own or be deemed
(under Section 424(d) of the Internal Revenue Code of 1986, as amended (the
"Code")) to own stock (including stock subject to any outstanding options held
by the employee) possessing 5 percent or more of the total combined voting power
or value of all classes of stock of the Company or any parent or subsidiary of
the Company, shall be ineligible to participate in the Plan. A "full-time
employee" is one who is in the active service of the Company or a Participating
Subsidiary excluding, however, any employee whose customary employment is 20
hours or less per week or whose customary employment is for not more than five
months per calendar year.
 
    5.  OFFERINGS.  The Plan shall be implemented by a series of one-year
offerings ("Offerings"), with a new Offering commencing on January 8 of each
year and ending on January 7 of the following year. The first trading day of
each Offering is the "Offering Date" and the last trading day of each Offering
is the "Purchase Date" for the Offering. On each Offering Date, each eligible
employee shall be granted an option under the Plan to purchase shares of Common
Stock on the Purchase Date for the price determined under paragraph 7 of the
Plan exclusively through payroll deductions authorized under paragraph 6 of the
Plan; provided, however, that (a) no option shall permit the purchase of more
than 3,000 shares, and (b) no option may be granted under the Plan that would
allow an employee's right to purchase shares under all stock purchase plans of
the Company and its parents and subsidiaries to which Section 423 of the Code
applies to accrue at a rate that exceeds $25,000 of fair market value of shares
(determined at the date of grant) for each calendar year in which such option is
outstanding.
 
- ------------------------
 
*   NOTE: Underlined matter is new; matter in [BRACKETS AND ITALICS] is to be
    deleted.
 
                                      B-1
<PAGE>
    6.  PARTICIPATION IN THE PLAN.
 
    (a)  INITIATING PARTICIPATION.  An eligible employee may participate in an
Offering under the Plan by filing with the Company no later than 10 days prior
to the Offering Date, on forms furnished by the Company, a subscription and
payroll deduction authorization. Once filed, a subscription and payroll
deduction authorization shall remain in effect for subsequent Offerings unless
amended or terminated. The payroll deduction authorization will authorize the
employing corporation to make payroll deductions from each of the participant's
paychecks during an Offering the participant is participating in. Payroll
deductions from any paycheck may not exceed 15 percent of the gross amount of
base pay plus commissions, if any, payable to the participant for the period
covered by the paycheck. If payroll deductions are made by a Participating
Subsidiary, that corporation will promptly remit the amount of the deductions to
the Company.
 
    (b)  AMENDING OR TERMINATING PARTICIPATION.  After a participant has begun
participating in the Plan by initiating payroll deductions, the participant may
not amend the payroll deduction authorization except for an amendment effective
for the first paycheck following a Purchase Date, but may terminate
participation in the Plan at any time prior to the tenth day before a Purchase
Date by written notice to the Company. A permitted change in payroll deductions
shall be effective for any pay period only if written notice is received by the
Company at least three business days prior to the payroll effective date
published by the Company for that pay period. Participation in the Plan shall
also terminate when a participant ceases to be an eligible employee for any
reason, including death or retirement. A participant may not reinstate
participation in the Plan with respect to a particular Offering after once
terminating participation in the Plan with respect to that Offering. Upon
termination of a participant's participation in the Plan, all amounts deducted
from the participant's pay and not previously used to purchase shares under the
Plan shall be returned to the participant.
 
    7.  OPTION PRICE.  The price at which shares shall be purchased in an
Offering shall be the lower of (a) 85% of the fair market value of a share of
Common Stock on the Offering Date of the Offering or (b) 85% of the fair market
value of a share of Common Stock on the Purchase Date of the Offering. The fair
market value of a share of Common Stock on any date shall be the closing price
of the Common Stock for such date as reported by NASDAQ or, if the Common Stock
is not reported on NASDAQ, such other reported value of the Common Stock as
shall be specified by the Board of Directors.
 
    8.  SPECIAL RULES FOR NEW EMPLOYEES.  If a person becomes a full-time
employee after the last day on which the person could otherwise have elected
under paragraph 6(a) to participate in an Offering under the Plan and before
November 1 during that Offering, the new employee may nevertheless elect to
participate in that Offering, but the "Offering Date" on which the new
employee's option under the Plan is granted shall be the first trading day of
the second calendar month following the month in which the new employee became a
full-time employee. The "Purchase Date" for the new employee shall be the same
day as it is for all other employees participating in the current Offering. To
participate in the current Offering, a new employee must submit a subscription
and payroll deduction authorization as provided for in paragraph 6(a) no later
than 10 days prior to the new employee's Offering Date. For purposes of
determining under paragraph 7 the price at which shares shall be purchased in an
Offering by a new employee, "the fair market value of a share of Common Stock on
the Offering Date" shall be deemed to be the higher of the fair market value of
a share of Common Stock on the new employee's Offering Date or the fair market
value of a share of Common Stock on the initial Offering Date for the current
Offering.
 
    9.  PURCHASE OF SHARES.  All amounts withheld from the pay of a participant
shall be credited to his or her account under the Plan by the Custodian
appointed under paragraph 10. No interest will be paid on such accounts, unless
otherwise determined by the Board of Directors. On each Purchase Date, the
amount of the account of each participant will be applied to the purchase of
whole shares by such participant from the Company at the price determined under
paragraph 7. Any cash balance remaining in a participant's account after a
Purchase Date because it was less than the amount required to purchase a
 
                                      B-2
<PAGE>
full share shall be retained in the participant's account for the next Offering
Period; any excess amount will be repaid to the participant.
 
    10.  DELIVERY AND CUSTODY OF SHARES.  Shares purchased by participants
pursuant to the Plan will be delivered to and held in the custody of such
investment or financial firm (the "Custodian") as shall be appointed by the
Board of Directors. The Custodian may hold in nominee or street name
certificates for shares purchased pursuant to the Plan, and may commingle shares
in its custody pursuant to the Plan in a single account without identification
as to individual participants. By appropriate instructions to the Custodian on
forms to be provided for that purpose, a participant may from time to time
obtain (a) transfer into the participant's own name of all or part of the shares
held by the Custodian for the participant's account and delivery of such shares
to the participant; (b) transfer of all or part of the shares held for the
participant's account by the Custodian to a regular individual brokerage account
in the participant's own name, either with the firm then acting as Custodian or
with another firm, or (c) sale of all or part of the shares held by the
Custodian for the participant's account at the market price at the time the
order is executed and remittance of the net proceeds of sale to the participant.
Upon termination of participation in the Plan, the participant may elect to have
the shares held by the Custodian for the account of the participant transferred
and delivered in accordance with (a) above, transferred to a brokerage account
in accordance with (b), or sold in accordance with (c).
 
    11.  RECORDS AND STATEMENTS.  The Custodian will maintain the records of the
Plan. As soon as practicable after each Purchase Date each participant will
receive a statement showing the activity of his account since the preceding
Purchase Date and the balance on the Purchase Date as to both cash and shares.
Participants will be furnished such other reports and statements, and at such
intervals, as the Board of Directors shall determine from time to time.
 
    12.  EXPENSE OF THE PLAN.  The Company will pay all expenses incident to
operation of the Plan, including costs of record keeping, accounting fees, legal
fees, commissions and issue or transfer taxes on purchases pursuant to the Plan
and on delivery of shares to a participant or into his or her brokerage account.
The Company will not pay expenses, commissions or taxes incurred in connection
with sales of shares by the Custodian at the request of a participant. Expenses
to be paid by a participant will be deducted from the proceeds of sale prior to
remittance.
 
    13.  RIGHTS NOT TRANSFERABLE.  The right to purchase shares under this Plan
is not transferable by a participant, and such right is exercisable during the
participant's lifetime only by the participant. Upon the death of a participant,
any shares held by the Custodian for the participant's account shall be
transferred to the persons entitled thereto under the laws of the state of
domicile of the participant upon a proper showing of authority.
 
    14.  DIVIDENDS AND OTHER DISTRIBUTIONS.  Cash dividends and other cash
distributions, if any, on shares held by the Custodian will be paid currently to
the participants entitled thereto unless the Company subsequently adopts a
dividend reinvestment plan and the participant directs that his or her cash
dividends be invested in accordance with such plan. Stock dividends and other
distributions in shares of the Company on shares held by the Custodian shall be
issued to the Custodian and held by it for the account of the respective
participants entitled thereto.
 
    15.  VOTING AND SHAREHOLDER COMMUNICATIONS.  In connection with voting on
any matter submitted to the shareholders of the Company, the Custodian will
furnish to each participant a proxy authorizing the participant to vote the
shares held by the custodian for his account. Copies of all general
communications to shareholders of the Company will be sent to participants in
the Plan.
 
    16.  TAX WITHHOLDING.  Each participant who has purchased shares under the
Plan shall immediately upon notification of the amount due, if any, pay to the
Company in cash amounts necessary to satisfy any applicable federal, state and
local tax withholding determined by the Company to be required. If the Company
determines that additional withholding is required beyond any amount deposited
at the time of
 
                                      B-3
<PAGE>
purchase, the participant shall pay such amount to the Company on demand. If the
participant fails to pay the amount demanded, the Company may withhold that
amount from other amounts payable by the Company to the participant, including
salary, subject to applicable law.
 
    17.  RESPONSIBILITY AND INDEMNITY.  Neither the Company, its Board of
Directors, the Custodian, any Participating Subsidiary, nor any member, officer,
agent, or employee of any of them, shall be liable to any participant under the
Plan for any mistake of judgment or for any omission or wrongful act unless
resulting from gross negligence, willful misconduct or intentional misfeasance.
The Company will indemnify and save harmless its Board of Directors, the
Custodian and any such member, officer, agent or employee against any claim,
loss, liability or expense arising out of the Plan, except such as may result
from the gross negligence, willful misconduct or intentional misfeasance of such
entity or person.
 
    18.  CONDITIONS AND APPROVALS.  The obligations of the Company under the
Plan shall be subject to compliance with all applicable state and federal laws
and regulations, compliance with the rules of any stock exchange on which the
Company's securities may be listed, and approval of such federal and state
authorities or agencies as may have jurisdiction over the Plan or the Company.
The Company will use its best effort to comply with such laws, regulations and
rules and to obtain such approvals.
 
    19.  AMENDMENT OF THE PLAN.  The Board of Directors of the Company may from
time to time amend the Plan in any and all respects, except that without the
approval of the shareholders of the Company, the Board of Directors may not
increase the number of shares reserved for the Plan or decrease the purchase
price of shares offered pursuant to the Plan.
 
    20.  TERMINATION OF THE PLAN.  The Plan shall terminate when all of the
shares reserved for purposes of the Plan have been purchased, provided that the
Board of Directors in its sole discretion may at any time terminate the Plan
without any obligation on account of such termination, except as hereinafter in
this paragraph provided. Upon termination of the Plan, the cash and shares, if
any, held in the account of each participant shall forthwith be distributed to
the participant or to the participant's order, provided that if prior to the
termination of the Plan, the Board of Directors and shareholders of the Company
shall have adopted and approved a substantially similar plan, the Board of
Directors may in its discretion determine that the account of each participant
under this Plan shall be carried forward and continued as the account of such
participant under such other plan, subject to the right of any participant to
request distribution of the cash and shares, if any, held for his account.
 
    21.  EFFECTIVE DATE OF AMENDMENTS TO THE PLAN.  If the amendments to the
Plan submitted to the shareholders of the Company for approval at the 1996
annual meeting of shareholders are approved by the shareholders, (a) the
amendments shall become effective, and the first Offering under the amended Plan
shall commence, on January 8, 1997, and (b) a final purchase under the prior
version of the Plan shall occur on January 7, 1997.
 
                                      B-4
<PAGE>
                                   APPENDIX C
                      ELECTRO SCIENTIFIC INDUSTRIES, INC.
                           1996 STOCK INCENTIVE PLAN*
 
    1.  PURPOSE.  The purpose of this Stock Incentive Plan (the "Plan") is to
enable Electro Scientific Industries, Inc. (the "Company") to attract and retain
the services of selected employees, officers and directors of the Company or of
any subsidiary of the Company.
 
    2.  SHARES SUBJECT TO THE PLAN.  Subject to adjustment as provided below and
in paragraph 9, the shares to be offered under the Plan shall consist of Common
Stock of the Company, and the total number of shares of Common Stock that may be
issued under the Plan shall not exceed 250,000 [150,000] shares. The shares
issued under the Plan may be authorized and unissued shares or reacquired
shares. If a Performance-based Award granted under the Plan expires, terminates
or is canceled, the unissued shares subject to such Performance-based Award
shall again be available under the Plan. If shares sold or issued as a bonus or
Performance-based Award under the Plan are forfeited to the Company or
repurchased by the Company, the number of shares forfeited or repurchased shall
again be available under the Plan.
 
    3.  EFFECTIVE DATE AND DURATION OF PLAN.
 
    (a)  EFFECTIVE DATE.  The Plan shall become effective as of April 12, 1996.
However, all awards under the Plan shall be conditioned on and subject to
approval of the Plan by the shareholders of the Company. Subject to this
limitation, Performance-based Awards may be granted and shares may be awarded as
bonuses or sold under the Plan at any time after the effective date and before
termination of the Plan.
 
    (b)  DURATION.  The Plan shall continue in effect until all shares available
for issuance under the Plan have been issued and all restrictions on such shares
have lapsed. The Board of Directors may suspend or terminate the Plan at any
time except with respect to Performance-based Awards and shares subject to
restrictions then outstanding under the Plan. Termination shall not affect any
right of the Company to repurchase shares or the forfeitability of shares issued
under the Plan.
 
    4.  ADMINISTRATION.
 
    (a)  BOARD OF DIRECTORS.  The Plan shall be administered by the Board of
Directors of the Company, which shall determine and designate from time to time
the individuals to whom awards shall be made, the amount of the awards and the
other terms and conditions of the awards. Subject to the provisions of the Plan,
the Board of Directors may from time to time adopt and amend rules and
regulations relating to administration of the Plan, advance the lapse of any
waiting period, accelerate any exercise date, waive or modify any restriction
applicable to shares (except those restrictions imposed by law) and make all
other determinations in the judgment of the Board of Directors necessary or
desirable for the administration of the Plan. The interpretation and
construction of the provisions of the Plan and related agreements by the Board
of Directors shall be final and conclusive. The Board of Directors may correct
any defect or supply any omission or reconcile any inconsistency in the Plan or
in any related agreement in the manner and to the extent it shall deem expedient
to carry the Plan into effect, and it shall be the sole and final judge of such
expediency.
 
    (b)  COMMITTEE.  The Board of Directors may delegate to a committee of the
Board of Directors or specified officers of the Company, or both (the
"Committee") any or all authority for administration of the Plan. If authority
is delegated to a Committee, all references to the Board of Directors in the
Plan shall mean and relate to the Committee except (i) as otherwise provided by
the Board of Directors, and (ii) that only the Board of Directors may amend or
terminate the Plan as provided in paragraphs 3 and 10.
 
    5.  TYPES OF AWARDS; ELIGIBILITY.  The Board of Directors may, from time to
time, take the following action, separately or in combination, under the Plan:
(i) award stock bonuses as provided in paragraph 6;
 
- ------------------------
 
*   NOTE: Underlined matter is new; matter in [BRACKETS AND ITALICS] is to be
    deleted.
 
                                      C-1
<PAGE>
(ii) sell shares subject to restrictions as provided in paragraph 7; and (iii)
grant Performance-based Awards as provided in paragraph 8. An award may be made
to any employee, officer or director of the Company or any subsidiary of the
Company. The Board of Directors shall select the individuals to whom awards
shall be made and shall specify the action taken with respect to each individual
to whom an award is made. At the discretion of the Board of Directors, an
individual may be given an election to surrender an award in exchange for the
grant of a new award.
 
    6.  STOCK BONUSES.  The Board of Directors may award shares under the Plan
as stock bonuses. Shares awarded as a bonus shall be subject to the terms,
conditions, and restrictions determined by the Board of Directors. The
restrictions may include restrictions concerning transferability and forfeiture
of the shares awarded, together with such other restrictions as may be
determined by the Board of Directors. The Board of Directors may require the
recipient to sign an agreement as a condition of the award, but may not require
the recipient to pay any monetary consideration other than amounts necessary to
satisfy tax withholding requirements. The agreement may contain any terms,
conditions, restrictions, representations and warranties required by the Board
of Directors. The certificates representing the shares awarded shall bear any
legends required by the Board of Directors. The Company may require any
recipient of a stock bonus to pay to the Company in cash upon demand amounts
necessary to satisfy any applicable federal, state or local tax withholding
requirements. If the recipient fails to pay the amount demanded, the Company may
withhold that amount from other amounts payable by the Company to the recipient,
including salary or fees for services, subject to applicable law. With the
consent of the Board of Directors, a recipient may deliver Common Stock to the
Company to satisfy this withholding obligation. The number of shares reserved
for issuance under the Plan shall be reduced by the number of shares issued as a
stock bonus, less the number of shares surrendered or withheld to satisfy
withholding obligations.
 
    7.  RESTRICTED STOCK.  The Board of Directors may issue shares under the
Plan for such consideration (including promissory notes and services) as
determined by the Board of Directors. Shares issued under the Plan shall be
subject to the terms, conditions and restrictions determined by the Board of
Directors. The restrictions may include restrictions concerning transferability,
repurchase by the Company and forfeiture of the shares issued, together with
such other restrictions as may be determined by the Board of Directors. All
Common Stock issued pursuant to this paragraph 7 shall be subject to a purchase
agreement, which shall be executed by the Company and the prospective recipient
of the shares prior to the delivery of certificates representing such shares to
the recipient. The purchase agreement may contain any terms, conditions,
restrictions, representations and warranties required by the Board of Directors.
The certificates representing the shares shall bear any legends required by the
Board of Directors. The Company may require any purchaser of restricted stock to
pay to the Company in cash upon demand amounts necessary to satisfy any
applicable federal, state or local tax withholding requirements. If the
purchaser fails to pay the amount demanded, the Company may withhold that amount
from other amounts payable by the Company to the purchaser, including salary,
subject to applicable law. With the consent of the Board of Directors, a
purchaser may deliver Common Stock to the Company to satisfy this withholding
obligation. The number of shares reserved for issuance under the Plan shall be
reduced by the number of shares issued as restricted stock, less the number of
shares surrendered or withheld to satisfy withholding obligations.
 
    8.  PERFORMANCE-BASED AWARDS.  The Board of Directors may grant awards
intended to qualify as performance-based compensation under Section 162(m) of
the Internal Revenue Code of 1986, as amended, and the regulations thereunder
("Performance-based Awards"). Performance-based Awards shall be denominated at
the time of grant either in Common Stock ("Stock Performance Awards") or in
dollar amounts ("Dollar Performance Awards"). Payment under a Stock Performance
Award or a Dollar Performance Award shall be made, at the discretion of the
Board of Directors, in Common Stock
 
                                      C-2
<PAGE>
("Performance Shares"), or in cash or in any combination thereof.
Performance-based Awards shall be subject to the following terms and conditions:
 
    (a)  AWARD PERIOD.  The Board of Directors shall determine the period of
time for which a Performance-based Award is made (the "Award Period").
 
    (b)  PERFORMANCE GOALS AND PAYMENT.  The Board of Directors shall establish
in writing objectives ("Performance Goals") that must be met by the Company or
any subsidiary, division or other unit of the Company ("Business Unit") during
the Award Period as a condition to payment being made under the
Performance-based Award. The Performance Goals for each award shall be one or
more targeted levels of performance with respect to one or more of the following
objective measures with respect to the Company or any Business Unit: earnings,
earnings per share, stock price increase, total shareholder return (stock price
increase plus dividends), return on equity, return on assets, return on capital,
economic value added, revenues, operating income, inventories, inventory turns,
cash flows or any of the foregoing before the effect of acquisitions,
divestitures, accounting changes, and restructuring and special charges
(determined according to criteria established by the Board of Directors). The
Board of Directors shall also establish the number of Performance Shares or the
amount of cash payment to be made under a Performance-based Award if the
Performance Goals are met or exceeded, including the fixing of a maximum payment
(subject to paragraph 8(d)). The Board of Directors may establish other
restrictions to payment under a Performance-based Award, such as a continued
employment requirement, in addition to satisfaction of the Performance Goals.
Some or all of the Performance Shares may be issued at the time of the award as
restricted shares subject to forfeiture in whole or in part if Performance Goals
or, if applicable, other restrictions are not satisfied.
 
    (c)  COMPUTATION OF PAYMENT.  During or after an Award Period, the
performance of the Company or Business Unit, as applicable, during the period
shall be measured against the Performance Goals. If the Performance Goals are
not met, no payment shall be made under a Performance-based Award. If the
Performance Goals are met or exceeded, the Board of Directors shall certify that
fact in writing and certify the number of Performance Shares earned or the
amount of cash payment to be made under the terms of the Performance-based
Award.
 
    (d)  MAXIMUM AWARDS.  No participant may receive Stock Performance Awards in
any fiscal year under which the maximum number of shares of Common Stock
issuable under the award exceeds 100,000 shares or Dollar Performance Awards in
any fiscal year under which the maximum amount of cash payable under the award
exceeds $750,000.
 
    (e)  TAX WITHHOLDING.  Each participant who has received Performance Shares
shall, upon notification of the amount due, pay to the Company in cash amounts
necessary to satisfy any applicable federal, state and local tax withholding
requirements. If the participant fails to pay the amount demanded, the Company
may withhold that amount from other amounts payable by the Company to the
participant, including salary, subject to applicable law. With the consent of
the Board of Directors, a participant may satisfy this obligation, in whole or
in part, by having the Company withhold from any shares to be issued that number
of shares that would satisfy the withholding amount due or by delivering shares
of Common Stock to the Company to satisfy the withholding amount.
 
    (f)  EFFECT ON SHARES AVAILABLE.  The payment of a Performance-based Award
in cash shall not reduce the number of shares of Common Stock reserved for
issuance under the Plan. The number of shares of Common Stock reserved for
issuance under the Plan shall be reduced by the number of shares issued upon
payment of an award, less the number of shares surrendered or withheld to
satisfy withholding obligations.
 
    9.  CHANGES IN CAPITAL STRUCTURE.  If the outstanding Common Stock of the
Company is hereafter increased or decreased or changed into or exchanged for a
different number or kind of shares or other securities of the Company by reason
of any stock split, combination of shares or dividend payable in shares,
recapitalization or reclassification, appropriate adjustment shall be made by
the Board of Directors in the
 
                                      C-3
<PAGE>
number and kind of shares available for grants under the Plan. In addition, the
Board of Directors shall make appropriate adjustment in the number and kind of
shares subject to outstanding Performance-based Awards so that the recipient's
proportionate interest before and after the occurrence of the event is
maintained. Notwithstanding the foregoing, the Board of Directors shall have no
obligation to effect any adjustment that would or might result in the issuance
of fractional shares, and any fractional shares resulting from any adjustment
may be disregarded or provided for in any manner determined by the Board of
Directors. Any such adjustments made by the Board of Directors shall be
conclusive.
 
    10.  AMENDMENT OF PLAN.  The Board of Directors may at any time, and from
time to time, modify or amend the Plan in such respects as it shall deem
advisable because of changes in the law while the Plan is in effect or for any
other reason. Except as provided in paragraph 9, however, no change in an award
already granted shall be made without the written consent of the holder of such
award.
 
    11.  APPROVALS.  The obligations of the Company under the Plan are subject
to the approval of state and federal authorities or agencies with jurisdiction
in the matter. The Company will use its best efforts to take steps required by
state or federal law or applicable regulations, including rules and regulations
of the Securities and Exchange Commission and any stock exchange on which the
Company's shares may then be listed, in connection with the grants under the
Plan. The foregoing notwithstanding, the Company shall not be obligated to issue
or deliver Common Stock under the Plan if such issuance or delivery would
violate applicable state or federal securities laws.
 
    12.  EMPLOYMENT AND SERVICE RIGHTS.  Nothing in the Plan or any award
pursuant to the Plan shall (i) confer upon any employee any right to be
continued in the employment of the Company or any subsidiary or interfere in any
way with the right of the Company or any subsidiary by whom such employee is
employed to terminate such employee's employment at any time, for any reason,
with or without cause, or to decrease such employee's compensation or benefits,
or (ii) confer upon any person engaged by the Company any right to be retained
or employed by the Company or to the continuation, extension, renewal, or
modification of any compensation, contract, or arrangement with or by the
Company.
 
    13.  RIGHTS AS A SHAREHOLDER.  The recipient of any award under the Plan
shall have no rights as a shareholder with respect to any Common Stock until the
date of issue to the recipient of a stock certificate for such shares. Except as
otherwise expressly provided in the Plan, no adjustment shall be made for
dividends or other rights for which the record date occurs prior to the date
such stock certificate is issued.
 
                                      C-4
<PAGE>

                     ELECTRO SCIENTIFIC INDUSTRIES, INC.

P                     ANNUAL MEETING SEPTEMBER 25, 1998
R
O                  PROXY SOLICITED BY THE BOARD OF DIRECTORS
X
Y    The undersigned hereby appoints David F. Bolender, Donald R. VanLuvanee 
     and Joseph L. Reinhart, and each of them, proxies with power of 
     substitution to vote on behalf of the undersigned all shares which the 
     undersigned may be entitled to vote at the Annual Meeting of 
     Shareholders of Electro Scientific Industries, Inc. on September 25, 
     1998 and any adjournments thereof, with all powers that the undersigned 
     would possess if personally present, with respect to the matters 
     referred to on this proxy. A majority of the proxies or substitutes 
     present at the meeting may exercise all powers granted hereby.

     Election of Directors - Nominees:             CHANGE OF ADDRESS
     3 year term: Larry L. Hansen,
                  Vernon B. Ryles, Jr.,     -----------------------------------
                  Donald R. VanLuvanee      -----------------------------------
     2 year term: Jon D. Tompkins           -----------------------------------
     1 year term: Gerald F. Taylor          -----------------------------------
                                            (If you have written in the space,
                                            please mark the corresponding box 
                                            on the reverse side of this card)

     THE PROXIES WILL VOTE THE SHARES REPRESENTED BY THIS PROXY AS SPECIFIED 
     BY YOU ON THE REVERSE SIDE, BUT IF NO SPECIFICATION IS MADE, THE PROXIES 
     WILL VOTE THE SHARES FOR THE ELECTION OF DIRECTORS AND FOR APPROVAL OF ALL 
     PROPOSALS.
                                                                     -----------
                                                                     SEE REVERSE
                                                                         SIDE
                                                                     -----------

<PAGE>
<TABLE>
<S>                            <C>                                         <C>
     Please mark your
 X   votes as in this
     example.

                FOR  WITHHELD                       FOR  AGAINST  ABSTAIN                           FOR  AGAINST  ABSTAIN
1. Election of                 2. Amending the 1989                        4. Amending the 1996
   Directors                      Stock Option Plan                           Stock Incentive Plan
(see reverse)
For, except vote withheld from 
the following nominee(s):
                               3. Amending the 1990                        5. Voting on the selection
                                  Employee Stock                              of independent auditors
                                  Purchase Plan                               for the Company
- -------------------------------

                                                                                           Change of address on
                                                                                           reverse side


                                                                           The proxies may vote in their discretion as to other
                                                                           matters which may come before the meeting.
                                                                           Please date and sign exactly as name is imprinted 
                                                                           hereon, including the designation as executor, trustee,
                                                                           etc., if applicable. A Corporation may sign in its name
                                                                           by the president or other authorized officer. All co-
                                                                           owners must sign.


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

                                                                           -------------------------------------------------------
                PLEASE SIGN AND RETURN IMMEDIATELY                           SIGNATURE(S)                                  DATE
</TABLE>


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