EXPONENT INC
S-8, 2000-03-06
MANAGEMENT CONSULTING SERVICES
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<PAGE>

           As filed with the Securities and Exchange Commission on March 6, 2000
                                                     Registration No. 333-______
- --------------------------------------------------------------------------------
                      SECURITIES AND EXCHANGE COMMISSION
                             Washington, DC  20549
                                   FORM S-8
                            Registration Statement
                                     Under
                          The Securities Act of 1933
                                  __________

                                EXPONENT, INC.

     A Delaware Corporation     I.R.S. Employer Corporation No. 77-0218904
                                                                ----------

             149 Commonwealth Drive, Menlo Park, California  94025
                                 650-326-9400

                                 EXPONENT, INC

                      1998 NONSTATUTORY STOCK OPTION PLAN
                            1999 STOCK OPTION PLAN
                          RESTRICTED STOCK AWARD PLAN
                         EMPLOYEE STOCK PURCHASE PLAN


<TABLE>
<CAPTION>
===================================================================================================================================
                                                 CALCULATION OF REGISTRATION FEE
===================================================================================================================================
                                                                          Proposed Maximum    Proposed Maximum
                                                            Amount to be   Offering Price         Aggregate          Amount of
           Title of Securities to be Registered              Registered       Per Share        Offering Price     Registration Fee
<S>                                                         <C>           <C>                <C>                  <C>
Common Stock                                                   1,355,000        $   8.0630        $ 9,807,000            $2,589.05
1998 Stock Nonstatutory Stock Option Plan
    - Shares subject to outstanding options                      347,386        $   5.5725(1)     $ 1,935,808            $  511.05
    - Shares reserved for issuance                               107,614        $   8.0630        $   867,692(2)         $  229.07
1999 Stock Option Plan
 -Shares subject to outstanding options                          300,000        $    7.219        $ 2,165,700            $  571.74
 -Shares reserve for issuance                                    100,000        $   8.0630        $   806,300(2)         $  212.86
Restricted Stock  Award Plan                                     100,000        $   8.0630        $   806,300(2)         $  212.86
Employee Stock Purchase Plan                                     400,000        $   8.0630        $ 3,225,200(2)         $  851.45
</TABLE>

     (1)  Calculated based upon the weighted average exercise price of the
          options outstanding in accordance with Rule 457.

     (2)  Estimated in accordance with Rule 457(h) solely for the purpose of
          computing the amount of the registration fee based on the prices of
          the Company's Common Stock as reported on the Nasdaq National Market
          on March 2, 2000.

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

                                    PART II

              INFORMATION REQUIRED IN THE REGISTRATION STATEMENT


Item 3. INCORPORATION OF DOCUMENTS BY REFERENCE

        The following documents filed or to be filed with the Commission by the
registrant are incorporated by reference in this registration statement:

        (a) The registrant's latest Annual Report on Form 10-K for the fiscal
year ended January 1, 1999 filed pursuant to Section 13(a) or 15(d) of the
Securities Exchange Act of 1934, as amended (the "Exchange Act");

        (b) The registrant's Quarterly Report on Form 10-Q for the quarters
ended October 1, 1999, July 2, 1999 and April 2, 1999;

        (c) All other reports filed pursuant to Section 13(a) or 15(d) of the
Securities Exchange Act of 1934, as amended (the "Exchange Act") since the end
of the fiscal year covered by the registrants Annual Report referred to in (a)
above;

        (d) The description of the Common Stock of the registrant contained in
the registrant's registration statement on Form 8-A filed on June 25th, 1990
pursuant to Section 12 of the Exchange Act, including any amendment or report
filed for the purpose of updating such description;

        (e) All documents subsequently filed by the registrant pursuant to
Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act, prior to the filing of
a post-effective amendment which indicates that all securities offered hereby
have been sold or which deregisters all securities then remaining unsold, shall
be deemed to be incorporated by reference herein and made a part hereof from
their respective dates of filing (such documents, and the documents enumerated
above, being hereinafter referred to as "Incorporated Documents"); PROVIDED,
HOWEVER, that the documents enumerated above or subsequently filed by Exponent,
Inc pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act in each
year during which the offering made hereby is in effect prior to the filing with
the SEC of Exponent, Inc.'s Annual Report on Form 10-K covering such year shall
not be Incorporated Documents or be incorporated by reference herein or be a
part hereof from and after the filing of such Annual Report on Form 10-K.

        Any statement contained in an Incorporated Document or deemed to be
incorporated by reference herein shall be deemed to be modified or superseded
for purposes hereof to the extent that a statement contained herein or in any
other subsequently filed Incorporated Document modifies or supersedes such
statement.  Any such statement so modified or superseded shall not be deemed,
except as so modified or superseded, to constitute a par hereof.

Item 4. DESCRIPTION OF SECURITIES.

  Not Applicable.

Item 5. INTERESTS OF NAMED EXPERTS AND COUNSEL.

  Not Applicable.

Item 6.  INDEMNIFICATION OF DIRECTORS AND OFFICERS.

Article VII of the Amended and Restated Bylaws of Exponent, Inc. provides that
the Corporation shall, to the maximum extent and in the manner permitted by the
General Corporation Law of Delaware, indemnify any person  against expenses
(including attorney's fee), judgements, fines, and amounts paid in  settlement
actually and reasonable incurred in connection with any threatened, pending, or
completed action, suit, or
<PAGE>

proceeding in which sure person was or is a party or is threatened to be made a
party by reason of the fact that such person is or was a director or officer of
the corporation.

The Corporation is required to indemnify a director or officer in connection
with an action, suit, or proceeding initiated by such director or officer only
if the initiation of such action, suit, or proceeding by the director or officer
was authorized by the board of Directors of the Corporation.

The Corporation will pay the expenses incurred by a director or officer of the
Corporation entitled to indemnification in defending any action, suit, or
proceeding in advance of its final disposition; provided that payment of
expenses incurred by a director or officer of the Corporation will be repaid if
it is determined that the director or officer is not entitled to be indemnified.

The right conferred on any person by these Articles shall not be exclusive of
any other rights which such person may have or hereafter acquired under any
statue, provision of the Corporation's Certificate of Incorporation, these
bylaws, agreement, vote of the stockholders or disinterested directors.

The Corporation may purchase and maintain insurance on behalf of any person who
is or was a director or officer, for any liability asserted against him or her
and incurred by him or her in any such capacity, or arising out of his or her
status as such, whether or not the Corporation would have the power to indemnify
him or her against such liability under the provisions of the General
Corporation Law of Delaware.

Item 7. EXEMPTION FROM REGISTRATION CLAIMED.

     Not Applicable.

Item 8. EXHIBITS

5.1       Opinion of counsel as to the legality of the securities being
          registered

23.1      Consent of Wilson Sonsini Goodrich & Rosati (contained in Exhibit 5.1)

23.2      Consent of KPMG LLP

99.1      The 1998 Nonstatutory Stock Option Plan

99.2      The 1999 Stock Option Plan

99.3      Restricted Stock Award Plan

Item 9. UNDERTAKINGS

     A. Rule 415 Offering. The undersigned registrant hereby undertakes:
        -----------------

        (1) To file, during any period in which offers or sales are being made,
a post-effective amendment to this registration statement;

            (i)   To include any prospectus required by Section 10(a)(3) of the
Securities Act of 1933, as amended (the "Securities Act");

            (ii)  To reflect in the prospectus any facts or events arising after
the effective date of the registration statement (or the most recent post-
effective amendment thereof) which, individually or in the aggregate, represent
a fundamental change in the information set forth in the registration statement;

            (iii) To include any material information with respect to the plan
of distribution not previously disclosed in the registration statement or any
material change to such information in the registration statement.

Provided, however, that paragraphs (a)(1)(i) and (a)(1)(ii) do not apply if the
registration statement is on
<PAGE>

Form S-3 ((S)239.13 of this chapter) or Form S-8 ((S)239.16(b) of this chapter),
and the information required to be included in a post-effective amendment by
those paragraphs is contained in periodic reports filed by the registrant
pursuant to section 13 or section 15(d) of the Exchange Act that are
incorporated by reference in the registration statement.

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

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

     B. Filing incorporating subsequent Exchange Act documents by reference
        -------------------------------------------------------------------

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

     C. Request for acceleration of effective date or filing of registration
        --------------------------------------------------------------------
statement on Form S-8
- ---------------------

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


SIGNATURES

The Registrant

     Pursuant to the requirements of the Securities Act of 1933, as amended, the
registrant certifies that it has reasonable grounds to believe that it meets all
of the requirements for filing on Form S-8 and has duly caused this registration
statement or amendment thereto to be signed on its behalf by the undersigned,
thereunto duly authorized, in Menlo Park, California, on the 6th day of March
2000.

                        EXPONENT, INC.


                        Michael R. Gaulke

                        /s/  Michael R. Gaulke
                        Title: President, Chief Executive Officer, and Director
                                                    March 6, 2000
<PAGE>

                               POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints Michael Gaulke and Richard Schlenker, jointly and
severally, his attorneys-in-fact, each with the power of substitution, for him
in any and all capacities, to sign any amendments to this Registration Statement
on Form S-8, and to file the same, with exhibits thereto and other documents in
connection therewith, with the Securities and Exchange Commission, hereby
ratifying and confirming all that each of said attorneys-in-fact, or his
substitute or substitutes, may do or cause to be done by virtue hereof.

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

<TABLE>
<CAPTION>
               Signature                                        Title                                 Date
- ----------------------------------       ------------------------------------------------    -----------------------
<S>                                      <C>                                                  <C>
/s/ Edward J. Keith                      Chairman of the Board                                March 6, 2000
- -------------------

/s/ Michael R. Gaulke                    President, Chief Executive Officer, and Director     March 6, 2000
- ---------------------
                                         (Principal Executive Officer)

/s/ Richard L. Schlenker                 Chief Financial Officer and Secretary (Principal     March 6, 2000
- ------------------------
                                         Financial and Accounting Officer)

/s/ Samuel H. Armacost                   Director                                             March 6, 2000
- ----------------------

/s/ Barbara M. Barrett                   Director                                             March 6, 2000
- ----------------------

/s/ Jon  R. Katzenbach                   Director                                             March 6, 2000
- ----------------------

/s/ Subbaiah V. Malladi, Ph.D            Director                                             March 6, 2000
- -----------------------------

/s/ Roger L. McCarthy, Ph.D              Director                                             March 6, 2000
- ---------------------------

/s/ George T. Van Gilder                 Director                                             March 6, 2000
- ------------------------
</TABLE>
<PAGE>

                                 EXHIBIT INDEX
Exhibit
Number
  5.1    Opinion of counsel as to legality of securities being registered
 23.1    Consent of Wilson Sonsini Goodrich & Rosati (contained in Exhibit 5.1)
 23.2    Consent of KPMG LLP
 99.1    1998 Nonstatutory Stock Option Plan
 99.2    1999 Stock Option Plan
 99.3    Restricted Stock Award Plan

<PAGE>

                                                           EXHIBITS 5.1 and 23.1


                                 March 3, 2000

Exponent, Inc.
149 Commonwealth Drive
Menlo Park, California 94025

     Re:  Registration Statement on Form S-8
          ----------------------------------

To our client, Exponent, Inc.:

     We have examined the Registration Statement on Form S-8 to be filed by you
with the Securities and Exchange Commission on or about March 6, 2000 (the
"Registration Statement") in connection with the registration under the
Securities Act of 1933, as amended, of an aggregate of 455,000 shares of your
Common Stock reserved for issuance under the 1998 Nonstatutory Stock Option
Plan, 400,000 shares of your Common Stock reserved for issuance under the 1999
Stock Option Plan, 100,000 shares of your Common Stock reserved for issuance
under the Restricted Stock Award Plan, and 400,000 shares of your Common Stock
reserved for issuance under the Employee Stock Purchase Plan (collectively, the
"Plans"). We have examined the proceedings taken and are familiar with the
proceedings proposed to be taken by you in connection with the sale and issuance
of such Common Stock under the Plans.  This opinion is an opinion and not a
guaranty or warranty of the matters to which this opinion relates.

     Based upon the foregoing, it is our opinion that, when issued and sold in
the manner referred to in the Plans and pursuant to the agreements which
accompany the Plans, the Common Stock issued and sold thereby will be legally
and validly issued, fully paid and non-assessable.

We consent to the use of this opinion as an exhibit to the Registration
Statement and further consent to the use of our name wherever appearing in the
Registration Statement, including any Prospectus constituting a part thereof,
and any amendments thereto.  This opinion may be incorporated by reference in
any abbreviated registration statement filed pursuant to Item E under the
general instructions to Form S-8  under the Securities Act of 1933 with respect
to the Registration Statement.

                                    Very truly yours,
                                    WILSON SONSINI GOODRICH & ROSATI
                                    Professional Corporation
                                    /s/ Wilson Sonsini Goodrich & Rosati

<PAGE>

                                                                    EXHIBIT 23.2

                        CONSENT OF INDEPENDENT AUDITORS


The Board of Directors and Stockholders
Exponent, Inc.:

We consent to incorporation herein by reference of our report dated January 26,
1999, relating to the consolidated balance sheets of Exponent, Inc. and
subsidiaries as of January 1, 1999 and January 2, 1998, and the related
consolidated statements of operations, comprehensive income (loss),
stockholders' equity and cash flows for each of the years in the three-year
period ended January 1, 1999, and the related schedule, which report appears in
the January 1, 1999, annual report on Form 10-K of Exponent, Inc.

KPMG LLP

/s/ KPMG LLP

Mountain View, California
March 3, 2000

<PAGE>

                                                                    EXHIBIT 99.1

                                EXPONENT, INC.

                      1998 NONSTATUTORY STOCK OPTION PLAN


     1.   Purposes of the Plan.  The purposes of this Nonstatutory Stock
          --------------------
Option Plan are:

          .    to attract and retain the best available personnel for positions
               of substantial responsibility,

          .    to provide additional incentive to Employees and Consultants, and

          .    to promote the success of the Company's business.

          Options granted under the Plan will be Nonstatutory Stock Options.
     Stock Purchase Rights may also be granted under the Plan.

     2.   Definitions.  As used herein, the following definitions shall apply:
          -----------

          (a)  "Administrator" means the Board or any of its Committees as shall
                -------------
be administering the Plan, in accordance with Section 4 of the Plan.

          (b)  "Applicable Laws" means the requirements relating to the
                ---------------
administration of stock option plans under U.S. state corporate laws, U.S.
federal and state securities laws, the Code, any stock exchange or quotation
system on which the Common Stock is listed or quoted and the applicable laws of
any foreign country or jurisdiction where Options or Stock Purchase Rights are,
or will be, granted under the Plan.

          (c)  "Board" means the Board of Directors of the Company.
                -----

          (d)  "Code" means the Internal Revenue Code of 1986, as amended.
                ----

          (e)  "Committee" means a committee of Directors appointed by the Board
                ---------
in accordance with Section 4 of the Plan.

          (f)  "Common Stock" means the Common Stock of the Company.
                ------------

          (g)  "Company" means Exponent, Inc., a Delaware corporation.
                -------

          (h)  "Consultant" means any person, including an advisor, engaged by
                ----------
the Company or a Parent or Subsidiary to render services to such entity.

          (i)  "Director" means a member of the Board.
                --------
<PAGE>

          (j)  "Disability" means total and permanent disability as defined in
                ----------
Section 22(e)(3) of the Code.

          (k)  "Employee" means any person, excluding Directors, employed by the
                --------
Company or any Parent or Subsidiary of the Company.  A Service Provider shall
not cease to be an Employee in the case of (i) any leave of absence approved by
the Company or (ii) transfers between locations of the Company or between the
Company, its Parent, any Subsidiary, or any successor.  Neither service as a
Director nor payment of a director's fee by the Company shall be sufficient to
constitute "employment" by the Company.

          (l)  "Exchange Act" means the Securities Exchange Act of 1934, as
                ------------
amended.

          (m)  "Fair Market Value" means, as of any date, the value of Common
                -----------------
Stock determined as follows:

               (i)    If the Common Stock is listed on any established stock
exchange or a national market system, including without limitation the Nasdaq
National Market or The Nasdaq SmallCap Market of The Nasdaq Stock Market, its
Fair Market Value shall be the mean between the opening and closing sales prices
for such stock (or the mean between the high bid and low asked, if no sales were
reported) as quoted on such exchange or system for the last market trading day
prior to the time of determination, as reported in The Wall Street Journal or
such other source as the Administrator deems reliable;

               (ii)   If the Common Stock is regularly quoted by a recognized
securities dealer but selling prices are not reported, the Fair Market Value of
a Share of Common Stock shall be the mean between the high bid and low asked
prices for the Common Stock on the last market trading day prior to the day of
determination, as reported in The Wall Street Journal or such other source as
the Administrator deems reliable; or

               (iii)  In the absence of an established market for the Common
Stock, the Fair Market Value shall be determined in good faith by the
Administrator.

          (n)  "Notice of Grant" means a written or electronic notice evidencing
                ---------------
certain terms and conditions of an individual Option or Stock Purchase Right
grant.  The Notice of Grant is part of the Option Agreement or Restricted Stock
Purchase Agreement, as the case may be.

          (o)  "Officer" means a person who is an officer of the Company within
                -------
the meaning of Section 16 of the Exchange Act and the rules and regulations
promulgated thereunder.

          (p)  "Option" means a nonstatutory stock option granted pursuant to
                ------
the Plan, that is not intended to qualify as an incentive stock option within
the meaning of Section 422 of the Code and the regulations promulgated
thereunder.

          (q)  "Option Agreement" means an agreement between the Company and an
                ----------------
Optionee evidencing the terms and conditions of an individual Option grant.  The
Option Agreement is subject to the terms and conditions of the Plan.

                                      -2-
<PAGE>

          (r)  "Option Exchange Program" means a program whereby outstanding
                -----------------------
options are surrendered in exchange for options with a lower exercise price.

          (s)  "Optioned Stock" means the Common Stock subject to an Option or
                --------------
Stock Purchase Right.

          (t)  "Optionee" means the holder of an outstanding Option or Stock
                --------
Purchase Right granted under the Plan.

          (u)  "Parent" means a "parent corporation," whether now or hereafter
                ------
existing, as defined in Section 424(e) of the Code.

          (v)  "Plan" means this 1998 Nonstatutory Stock Option Plan.
                ----

          (w)  "Restricted Stock" means shares of Common Stock acquired pursuant
                ----------------
to a grant of a Stock Purchase Right under Section 11 below.

          (x)  "Restricted Stock Purchase Agreement" means a written agreement
                -----------------------------------
between the Company and the Optionee evidencing the terms and restrictions
applying to stock purchased under a Stock Purchase Right.  The Restricted Stock
Purchase Agreement is subject to the terms and conditions of the Plan and the
Notice of Grant.

          (y)  "Service Provider" means an Employee, excluding a Director.
                ----------------

          (z)  "Share" means a share of the Common Stock, as adjusted in
                -----
accordance with Section 13 of the Plan.

          (aa) "Stock Purchase Right" means a right to purchase Common Stock
                --------------------
pursuant to Section 11 below.

          (bb) "Subsidiary" means a "subsidiary corporation," whether now or
                ----------
hereafter existing, as defined in Section 424(f) of the Code.

     3.   Stock Subject to the Plan.  Subject to the provisions of Section 13 of
          -------------------------
the Plan, the maximum aggregate number of Shares which may be optioned and sold
under the Plan is 455,000 Shares.  The Shares may be authorized, but unissued,
or reacquired Common Stock.

          If an Option or Stock Purchase Right expires or becomes unexercisable
without having been exercised in full, or is surrendered pursuant to an Option
Exchange Program, the unpurchased Shares which were subject thereto shall become
available for future grant or sale under the Plan (unless the Plan has
terminated).  However, Shares that have actually been issued under the Plan,
upon exercise of either an Option or Stock Purchase Right, shall not be returned
to the Plan and shall not become available for future distribution under the
Plan, except that if Shares of Restricted Stock are repurchased by the Company
at their original purchase price, such Shares shall become available for future
grant under the Plan.

                                      -3-
<PAGE>

     4.   Administration of the Plan.
          --------------------------

          (a)  Administration.  The Plan shall be administered by (i) the Board
               --------------
or (ii) a Committee, which committee shall be constituted to satisfy Applicable
Laws.

          (b)  Powers of the Administrator.  Subject to the provisions of the
               ---------------------------
Plan, and in the case of a Committee, subject to the specific duties delegated
by the Board to such Committee, the Administrator shall have the authority, in
its discretion:

               (i)    to determine the Fair Market Value of the Common Stock;

               (ii)   to select the Service Providers to whom Options and Stock
Purchase Rights may be granted hereunder;

               (iii)  to determine whether and to what extent Options and Stock
Purchase Rights are granted hereunder;

               (iv)   to determine the number of shares of Common Stock to be
covered by each Option and Stock Purchase Right granted hereunder;

               (v)    to approve forms of agreement for use under the Plan;

               (vi)   to determine the terms and conditions, not inconsistent
with the terms of the Plan, of any award granted hereunder. Such terms and
conditions include, but are not limited to, the exercise price, the time or
times when Options or Stock Purchase Rights may be exercised (which may be based
on performance criteria), any vesting acceleration or waiver of forfeiture
restrictions, and any restriction or limitation regarding any Option or Stock
Purchase Right or the shares of Common Stock relating thereto, based in each
case on such factors as the Administrator, in its sole discretion, shall
determine;

               (vii)  to reduce the exercise price of any Option to the then
current Fair Market Value if the Fair Market Value of the Common Stock covered
by such Option shall have declined since the date the Option was granted;

               (viii) to institute an Option Exchange Program;

               (ix)   to construe and interpret the terms of the Plan and awards
granted pursuant to the Plan;

               (x)    to prescribe, amend and rescind rules and regulations
relating to the Plan, including rules and regulations relating to sub-plans
established for the purpose of qualifying for preferred tax treatment under
foreign tax laws;

               (xi)   to modify or amend each Option or Stock Purchase Right
(subject to Section 15(b) of the Plan), including the discretionary authority to
extend the post-termination

                                      -4-
<PAGE>

exercisability period of Options or Stock Purchase Rights longer than is
otherwise provided for in the Plan;

               (xii)  to authorize any person to execute on behalf of the
Company any instrument required to effect the grant of an Option or Stock
Purchase Right previously granted by the Administrator;

               (xiii) to determine the terms and restrictions applicable to
Options or Stock Purchase Rights;

               (xiv)  to allow Optionees to satisfy withholding tax obligations
by electing to have the Company withhold from the Shares to be issued upon
exercise of an Option or Stock Purchase Right that number of Shares having a
Fair Market Value equal to the amount required to be withheld. The Fair Market
Value of the Shares to be withheld shall be determined on the date that the
amount of tax to be withheld is to be determined. All elections by an Optionee
to have Shares withheld for this purpose shall be made in such form and under
such conditions as the Administrator may deem necessary or advisable; and

               (xv)   to make all other determinations deemed necessary or
advisable for administering the Plan.

          (c)  Effect of Administrator's Decision.  The Administrator's
               ----------------------------------
decisions, determinations and interpretations shall be final and binding on all
Optionees and any other holders of Options.

     5.   Eligibility.  Options and Stock Purchase Rights may be granted to
          -----------
Service Providers; provided, however, that notwithstanding anything to the
contrary contained in the Plan, an Option or Stock Purchase Right may only be
granted to an Officer as an inducement essential to his or her initial
employment with the Company.

     6.   Limitation.  Neither the Plan nor any Option or Stock Purchase Right
          ----------
shall confer upon an Optionee any right with respect to continuing the
Optionee's relationship as a Service Provider with the Company, nor shall they
interfere in any way with the Optionee's right or the Company's right to
terminate such relationship at any time, with or without cause.

     7.   Term of Plan.  The Plan shall become effective upon its adoption by
          ------------
the Board.  It shall continue in effect for ten (10) years, unless sooner
terminated under Section 15 of the Plan.

     8.   Term of Option.  The term of each Option shall be stated in the Option
          --------------
Agreement.

     9.   Option Exercise Price and Consideration.
          ---------------------------------------

          (a)  Exercise Price. The per share exercise price for the Shares to be
               --------------
issued pursuant to exercise of an Option shall be determined by the
Administrator.

                                      -5-
<PAGE>

          (b)  Waiting Period and Exercise Dates.  At the time an Option is
               ---------------------------------
granted, the Administrator shall fix the period within which the Option may be
exercised and shall determine any conditions which must be satisfied before the
Option may be exercised.

          (c)  Form of Consideration.  The Administrator shall determine the
               ---------------------
acceptable form of consideration for exercising an Option, including the method
of payment.  Such consideration may consist entirely of:

               (i)    cash;

               (ii)   check;

               (iii)  promissory note;

               (iv)   other Shares which (A) in the case of Shares acquired upon
exercise of an option, have been owned by the Optionee for more than six months
on the date of surrender, and (B) have a Fair Market Value on the date of
surrender equal to the aggregate exercise price of the Shares as to which said
Option shall be exercised;

               (v)    consideration received by the Company under a cashless
exercise program implemented by the Company in connection with the Plan;

               (vi)   a reduction in the amount of any Company liability to the
Optionee, including any liability attributable to the Optionee's participation
in any Company-sponsored deferred compensation program or arrangement;

               (vii)  such other consideration and method of payment for the
issuance of Shares to the extent permitted by Applicable Laws; or

               (viii) any combination of the foregoing methods of payment.

     10.  Exercise of Option.
          ------------------

          (a)  Procedure for Exercise; Rights as a Shareholder. Any Option
               -----------------------------------------------
granted hereunder shall be exercisable according to the terms of the Plan and at
such times and under such conditions as determined by the Administrator and set
forth in the Option Agreement.  An Option may not be exercised for a fraction of
a Share.

               An Option shall be deemed exercised when the Company receives:
(i) written or electronic notice of exercise (in accordance with the Option
Agreement) from the person entitled to exercise the Option, and (ii) full
payment for the Shares with respect to which the Option is exercised. Full
payment may consist of any consideration and method of payment authorized by the
Administrator and permitted by the Option Agreement and the Plan. Shares issued
upon exercise of an Option shall be issued in the name of the Optionee or, if
requested by the Optionee, in the name of the Optionee and his or her spouse.
Until the Shares are issued (as evidenced by the appropriate entry on the books
of the Company or of a duly authorized transfer agent of the Company), no right

                                      -6-
<PAGE>

to vote or receive dividends or any other rights as a shareholder shall exist
with respect to the Optioned Stock, notwithstanding the exercise of the Option.
The Company shall issue (or cause to be issued) such Shares promptly after the
Option is exercised. No adjustment will be made for a dividend or other right
for which the record date is prior to the date the Shares are issued, except as
provided in Section 13 of the Plan.

               Exercising an Option in any manner shall decrease the number of
Shares thereafter available, both for purposes of the Plan and for sale under
the Option, by the number of Shares as to which the Option is exercised.

          (b)  Termination of Relationship as a Service Provider. If an Optionee
               -------------------------------------------------
ceases to be a Service Provider, other than upon the Optionee's death or
Disability, the Optionee may exercise his or her Option, but only within such
period of time as is specified in the Option Agreement, and only to the extent
that the Option is vested on the date of termination (but in no event later than
the expiration of the term of such Option as set forth in the Option Agreement).
In the absence of a specified time in the Option Agreement, the Option shall
remain exercisable for three (3) months following the Optionee's termination.
If, on the date of termination, the Optionee is not vested as to his or her
entire Option, the Shares covered by the unvested portion of the Option shall
revert to the Plan. If, after termination, the Optionee does not exercise his or
her Option within the time specified by the Administrator, the Option shall
terminate, and the Shares covered by such Option shall revert to the Plan.

          (c)  Disability of Optionee.  If an Optionee ceases to be a Service
               ----------------------
Provider as a result of the Optionee's Disability, the Optionee may exercise his
or her Option within such period of time as is specified in the Option
Agreement, to the extent the Option is vested on the date of termination (but in
no event later than the expiration of the term of such Option as set forth in
the Option Agreement).  In the absence of a specified time in the Option
Agreement, the Option shall remain exercisable for twelve (12) months following
the Optionee's termination.  If, on the date of termination, the Optionee is not
vested as to his or her entire Option, the Shares covered by the unvested
portion of the Option shall revert to the Plan.  If, after termination, the
Optionee does not exercise his or her Option within the time specified herein,
the Option shall terminate, and the Shares covered by such Option shall revert
to the Plan.

          (d)  Death of Optionee.  If an Optionee dies while a Service Provider,
               -----------------
the Option may be exercised within such period of time as is specified in the
Option Agreement (but in no event later than the expiration of the term of such
Option as set forth in the Notice of Grant), by the Optionee's estate or by a
person who acquires the right to exercise the Option by bequest or inheritance,
but only to the extent that the Option is vested on the date of death.  In the
absence of a specified time in the Option Agreement, the Option shall remain
exercisable for twelve (12) months following the Optionee's termination.  If, at
the time of death, the Optionee is not vested as to his or her entire Option,
the Shares covered by the unvested portion of the Option shall immediately
revert to the Plan.  The Option may be exercised by the executor or
administrator of the Optionee's estate or, if none, by the person(s) entitled to
exercise the Option under the Optionee's will or the laws of descent or
distribution.  If the Option is not so exercised within the time specified
herein, the Option shall terminate, and the Shares covered by such Option shall
revert to the Plan.

                                      -7-
<PAGE>

          (e)  Buyout Provisions. The Administrator may at any time offer to buy
               -----------------
out for a payment in cash or Shares, an Option previously granted based on such
terms and conditions as the Administrator shall establish and communicate to the
Optionee at the time that such offer is made.

     11.  Stock Purchase Rights.
          ---------------------

          (a)  Rights to Purchase.  Stock Purchase Rights may be issued either
               ------------------
alone, in addition to, or in tandem with other awards granted under the Plan
and/or cash awards made outside of the Plan.  After the Administrator determines
that it will offer Stock Purchase Rights under the Plan, it shall advise the
offeree in writing or electronically of the terms, conditions and restrictions
related to the offer, including the number of Shares that such person shall be
entitled to purchase, the price to be paid, and the time within which such
person must accept such offer.  The offer shall be accepted by execution of a
Restricted Stock Purchase Agreement in the form determined by the Administrator.

          (b)  Repurchase Option. Unless the Administrator determines otherwise,
               -----------------
the Restricted Stock Purchase Agreement shall grant the Company a repurchase
option exercisable upon the voluntary or involuntary termination of the
purchaser's service with the Company for any reason (including death or
disability). The purchase price for Shares repurchased pursuant to the
Restricted Stock Purchase Agreement shall be the original price paid by the
purchaser and may be paid by cancellation of any indebtedness of the purchaser
to the Company. The repurchase option shall lapse at such rate as the
Administrator may determine.

          (c)  Other Provisions.  The Restricted Stock Purchase Agreement shall
               ----------------
contain such other terms, provisions and conditions not inconsistent with the
Plan as may be determined by the Administrator in its sole discretion.

          (d)  Rights as a Shareholder.  Once the Stock Purchase Right is
               -----------------------
exercised, the purchaser shall have rights equivalent to those of a shareholder
and shall be a shareholder when his or her purchase is entered upon the records
of the duly authorized transfer agent of the Company.  No adjustment shall be
made for a dividend or other right for which the record date is prior to the
date the Stock Purchase Right is exercised, except as provided in Section 13 of
the Plan.

     12.  Non-Transferability of Options and Stock Purchase Rights.  Unless
          --------------------------------------------------------
determined otherwise by the Administrator, Options and Stock Purchase Rights may
not be sold, pledged, assigned, hypothecated, transferred, or disposed of in any
manner other than by will or by the laws of descent or distribution and may be
exercised, during the lifetime of the Optionee, only by the Optionee.  If the
Administrator makes an Option or Stock Purchase Right transferable, such Option
or Stock Purchase Right shall contain such additional terms and conditions as
the Administrator deems appropriate.

     13.  Adjustments Upon Changes in Capitalization, Dissolution, Merger or
          ------------------------------------------------------------------
Asset Sale.
- ----------

          (a)  Changes in Capitalization.  Subject to any required action by the
               -------------------------
shareholders of the Company, the number of shares of Common Stock covered by
each outstanding Option or

                                      -8-
<PAGE>

Stock Purchase Right, and the number of shares of Common Stock which have been
authorized for issuance under the Plan but as to which no Options have yet been
granted or which have been returned to the Plan upon cancellation or expiration
of an Option or Stock Purchase Right, as well as the price per share of Common
Stock covered by each such outstanding Option or Stock Purchase Right, shall be
proportionately adjusted for any increase or decrease in the number of issued
shares of Common Stock resulting from a stock split, reverse stock split, stock
dividend, combination or reclassification of the Common Stock, or any other
increase or decrease in the number of issued shares of Common Stock effected
without receipt of consideration by the Company; provided, however, that
conversion of any convertible securities of the Company shall not be deemed to
have been "effected without receipt of consideration." Such adjustment shall be
made by the Board, whose determination in that respect shall be final, binding
and conclusive. Except as expressly provided herein, no issuance by the Company
of shares of stock of any class, or securities convertible into shares of stock
of any class, shall affect, and no adjustment by reason thereof shall be made
with respect to, the number or price of shares of Common Stock subject to an
Option or Stock Purchase Right.

          (b)  Dissolution or Liquidation.  In the event of the proposed
               --------------------------
dissolution or liquidation of the Company, the Administrator shall notify each
Optionee as soon as practicable prior to the effective date of such proposed
transaction.  The Administrator in its discretion may provide for an Optionee to
have the right to exercise his or her Option until ten (10) days prior to such
transaction as to all of the Optioned Stock covered thereby, including Shares as
to which the Option would not otherwise be exercisable.  In addition, the
Administrator may provide that any Company repurchase option applicable to any
Shares purchased upon exercise of an Option or Stock Purchase Right shall lapse
as to all such Shares, provided the proposed dissolution or liquidation takes
place at the time and in the manner contemplated.  To the extent it has not been
previously exercised, an Option or Stock Purchase Right will terminate
immediately prior to the consummation of such proposed action.

          (c)  Merger or Asset Sale.  In the event of a merger of the Company
               --------------------
with or into another corporation, or the sale of substantially all of the assets
of the Company, each outstanding Option or Stock Purchase Right shall be assumed
or an equivalent option or right substituted by the successor corporation or a
Parent or Subsidiary of the successor corporation.  In the event that the
successor corporation refuses to assume or substitute for the Option or Stock
Purchase Right, the Optionee shall fully vest in and have the right to exercise
the Option or Stock Purchase Right as to all of the Optioned Stock, including
Shares as to which it would not otherwise be vested or exercisable.  If an
Option or Stock Purchase Right becomes fully vested and exercisable in lieu of
assumption or substitution in the event of a merger or sale of assets, the
Administrator shall notify the Optionee in writing or electronically that the
Option or Stock Purchase Right shall be fully vested and exercisable for a
period of fifteen (15) days from the date of such notice, and the Option or
Stock Purchase Right shall terminate upon the expiration of such period.  For
the purposes of this paragraph, the Option or Stock Purchase Right shall be
considered assumed if, following the merger or sale of assets, the option or
right confers the right to purchase or receive, for each Share of Optioned
Stock, immediately prior to the merger or sale of assets, the consideration
(whether stock, cash, or other securities or property) received in the merger or
sale of assets by holders of Common Stock for each Share held on the effective
date of the transaction (and if holders were offered a

                                      -9-
<PAGE>

choice of consideration, the type of consideration chosen by the holders of a
majority of the outstanding Shares); provided, however, that if such
consideration received in the merger or sale of assets is not solely common
stock of the successor corporation or its Parent, the Administrator may, with
the consent of the successor corporation, provide for the consideration to be
received upon the exercise of the Option or Stock Purchase Right, for each Share
of Optioned Stock to be solely common stock of the successor corporation or its
Parent equal in fair market value to the per share consideration received by
holders of Common Stock in the merger or sale of assets.

     14.  Date of Grant.  The date of grant of an Option or Stock Purchase Right
          -------------
shall be, for all purposes, the date on which the Administrator makes the
determination granting such Option or Stock Purchase Right, or such other later
date as is determined by the Administrator.  Notice of the determination shall
be provided to each Optionee within a reasonable time after the date of such
grant.

     15.  Amendment and Termination of the Plan.
          -------------------------------------

          (a)  Amendment and Termination.  The Board may at any time amend,
               -------------------------
alter, suspend or terminate the Plan.

          (b)  Effect of Amendment or Termination.  No amendment, alteration,
               ----------------------------------
suspension or termination of the Plan shall impair the rights of any Optionee,
unless mutually agreed otherwise between the Optionee and the Administrator,
which agreement must be in writing and signed by the Optionee and the Company.
Termination of the Plan shall not affect the Administrator's ability to exercise
the powers granted to it hereunder with respect to options granted under the
Plan prior to the date of such termination.

     16.  Conditions Upon Issuance of Shares.
          ----------------------------------

          (a)  Legal Compliance.  Shares shall not be issued pursuant to the
               ----------------
exercise of an Option or Stock Purchase Right unless the exercise of such Option
and the issuance and delivery of such Shares shall comply with Applicable Laws
and shall be further subject to the approval of counsel for the Company with
respect to such compliance.

          (b)  Investment Representations.  As a condition to the exercise of an
               --------------------------
Option or Stock Purchase Right the Company may require the person exercising
such Option or Stock Purchase Right to represent and warrant at the time of any
such exercise that the Shares are being purchased only for investment and
without any present intention to sell or distribute such Shares if, in the
opinion of counsel for the Company, such a representation is required.

     17.  Inability to Obtain Authority.  The inability of the Company to obtain
          -----------------------------
authority from any regulatory body having jurisdiction, which authority is
deemed by the Company's counsel to be necessary to the lawful issuance and sale
of any Shares hereunder, shall relieve the Company of any liability in respect
of the failure to issue or sell such Shares as to which such requisite authority
shall not have been obtained.

                                      -10-
<PAGE>

     18.  Reservation of Shares.  The Company, during the term of this Plan,
          ---------------------
will at all times reserve and keep available such number of Shares as shall be
sufficient to satisfy the requirements of the Plan.

                                      -11-
<PAGE>

                                EXPONENT, INC.

                      1998 NONSTATUTORY STOCK OPTION PLAN

                            STOCK OPTION AGREEMENT

     Unless otherwise defined herein, the terms defined in the Plan shall have
the same defined meanings in this Option Agreement.

I.   NOTICE OF STOCK OPTION GRANT
     ----------------------------

     [Optionee's Name and Address]

     You have been granted an option to purchase Common Stock of the Company,
subject to the terms and conditions of the Plan and this Option Agreement, as
follows:

     Grant Number                       _________________________

     Date of Grant                      _________________________

     Vesting Commencement Date          _________________________

     Exercise Price per Share           $________________________

     Total Number of Shares Granted     _________________________

     Total Exercise Price               $________________________

     Type of Option:                    Nonstatutory Stock Option

     Term/Expiration Date:              _________________________

     Vesting Schedule:
     ----------------

     Subject to the Optionee continuing to be a Service Provider on such dates,
this Option shall vest and become exercisable in accordance with the following
schedule:

     25% of the Shares subject to the Option shall vest each year on the Vesting
Commencement Date.

     Termination Period:
     ------------------

     This Option may be exercised for three (3) months after Optionee ceases to
be a Service Provider.  Upon the death or Disability of the Optionee, this
Option may be exercised for such longer period as provided in the Plan.  In no
event shall this Option be exercised later than the Term/Expiration Date as
provided above.

                                      -12-
<PAGE>

II.  AGREEMENT
     ---------

     1.   Grant of Option.  The Plan Administrator of the Company hereby grants
          ---------------
to the Optionee named in the Notice of Grant attached as Part I of this
Agreement (the "Optionee") an option (the "Option") to purchase the number of
Shares, as set forth in the Notice of Grant, at the exercise price per share set
forth in the Notice of Grant (the "Exercise Price"), subject to the terms and
conditions of the Plan, which is incorporated herein by reference.  Subject to
Section 15(b) of the Plan, in the event of a conflict between the terms and
conditions of the Plan and the terms and conditions of this Option Agreement,
the terms and conditions of the Plan shall prevail.

     2.   Exercise of Option.
          ------------------

          (a)  Right to Exercise.  This Option is exercisable during its term in
               -----------------
accordance with the Vesting Schedule set out in the Notice of Grant and the
applicable provisions of the Plan and this Option Agreement.

          (b)  Method of Exercise.  This Option is exercisable by delivery of an
               ------------------
exercise notice, in the form attached as Exhibit A (the "Exercise Notice"),
which shall state the election to exercise the Option, the number of Shares in
respect of which the Option is being exercised (the "Exercised Shares"), and
such other representations and agreements as may be required by the Company
pursuant to the provisions of the Plan.  The Exercise Notice shall be completed
by the Optionee and delivered to the Company.  The Exercise Notice shall be
accompanied by payment of the aggregate Exercise Price as to all Exercised
Shares.  This Option shall be deemed to be exercised upon receipt by the Company
of such fully executed Exercise Notice accompanied by such aggregate Exercise
Price.

          No Shares shall be issued pursuant to the exercise of this Option
unless such issuance and exercise complies with Applicable Laws.  Assuming such
compliance, for income tax purposes the Exercised Shares shall be considered
transferred to the Optionee on the date the Option is exercised with respect to
such Exercised Shares.

     3.   Method of Payment.  Payment of the aggregate Exercise Price shall be
          -----------------
by any of the following, or a combination thereof, at the election of the
Optionee:

          (a)  cash;

          (b)  check;

          (c)  consideration received by the Company under a cashless exercise
program implemented by the Company in connection with the Plan; or

          (d)  surrender of other Shares which (i) in the case of Shares
acquired upon exercise of an option, have been owned by the Optionee for more
than six (6) months on the date of surrender, and (ii) have a Fair Market Value
on the date of surrender equal to the aggregate Exercise Price of the Exercised
Shares.

                                      -13-
<PAGE>

     4.   Non-Transferability of Option.  This Option may not be transferred in
          -----------------------------
any manner otherwise than by will or by the laws of descent or distribution and
may be exercised during the lifetime of Optionee only by the Optionee.  The
terms of the Plan and this Option Agreement shall be binding upon the executors,
administrators, heirs, successors and assigns of the Optionee.

     5.   Term of Option.  This Option may be exercised only within the term set
          --------------
out in the Notice of Grant, and may be exercised during such term only in
accordance with the Plan and the terms of this Option Agreement.

     6.   Tax Consequences.  Some of the federal tax consequences relating to
          ----------------
this Option, as of the date of this Option, are set forth below.  THIS SUMMARY
IS NECESSARILY INCOMPLETE, AND THE TAX LAWS AND REGULATIONS ARE SUBJECT TO
CHANGE.  THE OPTIONEE SHOULD CONSULT A TAX ADVISER BEFORE EXERCISING THIS OPTION
OR DISPOSING OF THE SHARES.

          (a)  Exercising the Option.  The Optionee may incur regular federal
               ---------------------
income tax liability upon exercise of an NSO.  The Optionee will be treated as
having received compensation income (taxable at ordinary income tax rates) equal
to the excess, if any, of the Fair Market Value of the Exercised Shares on the
date of exercise over their aggregate Exercise Price.  If the Optionee is an
Employee or a former Employee, the Company will be required to withhold from his
or her compensation or collect from Optionee and pay to the applicable taxing
authorities an amount in cash equal to a percentage of this compensation income
at the time of exercise, and may refuse to honor the exercise and refuse to
deliver Shares if such withholding amounts are not delivered at the time of
exercise.

          (b)  Disposition of Shares.  If the Optionee holds NSO Shares for at
               ---------------------
least one year, any gain realized on disposition of the Shares will be treated
as long-term capital gain for federal income tax purposes.

     7.   Entire Agreement; Governing Law.  The Plan is incorporated herein by
          -------------------------------
reference.  The Plan and this Option Agreement constitute the entire agreement
of the parties with respect to the subject matter hereof and supersede in their
entirety all prior undertakings and agreements of the Company and Optionee with
respect to the subject matter hereof, and may not be modified adversely to the
Optionee's interest except by means of a writing signed by the Company and
Optionee.  This agreement is governed by the internal substantive laws, but not
the choice of law rules, of California.

     8.   NO GUARANTEE OF CONTINUED SERVICE.  OPTIONEE ACKNOWLEDGES AND AGREES
          ---------------------------------
THAT THE VESTING OF SHARES PURSUANT TO THE VESTING SCHEDULE HEREOF IS EARNED
ONLY BY CONTINUING AS A SERVICE PROVIDER AT THE WILL OF THE COMPANY (AND NOT
THROUGH THE ACT OF BEING HIRED, BEING GRANTED AN OPTION OR PURCHASING SHARES
HEREUNDER).  OPTIONEE FURTHER ACKNOWLEDGES AND AGREES THAT THIS AGREEMENT, THE
TRANSACTIONS CONTEMPLATED HEREUNDER AND THE VESTING SCHEDULE SET FORTH HEREIN DO
NOT CONSTITUTE AN EXPRESS OR IMPLIED PROMISE OF CONTINUED ENGAGEMENT AS A
SERVICE PROVIDER FOR THE VESTING PERIOD, FOR ANY PERIOD, OR AT ALL,

                                      -14-
<PAGE>

AND SHALL NOT INTERFERE WITH OPTIONEE'S RIGHT OR THE COMPANY'S RIGHT TO
TERMINATE OPTIONEE'S RELATIONSHIP AS A SERVICE PROVIDER AT ANY TIME, WITH OR
WITHOUT CAUSE.

          By your signature and the signature of the Company's representative
below, you and the Company agree that this Option is granted under and governed
by the terms and conditions of the Plan and this Option Agreement.  Optionee has
reviewed the Plan and this Option Agreement in their entirety, has had an
opportunity to obtain the advice of counsel prior to executing this Option
Agreement and fully understands all provisions of the Plan and Option Agreement.
Optionee hereby agrees to accept as binding, conclusive and final all decisions
or interpretations of the Administrator upon any questions relating to the Plan
and Option Agreement.  Optionee further agrees to notify the Company upon any
change in the residence address indicated below.



OPTIONEE                            EXPONENT, INC.


_________________________           ____________________________
Signature                           By

_________________________           ____________________________
Print Name                          Title

_________________________
Residence Address

_________________________

                                      -15-
<PAGE>

                                   EXHIBIT A
                                   ---------

                                EXPONENT, INC.

                      1998 NONSTATUTORY STOCK OPTION PLAN

                                EXERCISE NOTICE

Exponent, Inc.
149 Commonwealth Drive
Menlo Park, California 94025

Attention: [Title]

     1.   Exercise of Option.  Effective as of today, ________________, 199__,
          ------------------
the undersigned ("Purchaser") hereby elects to purchase ______________ shares
(the "Shares") of the Common Stock of Exponent, Inc. (the "Company") under and
pursuant to the 1998 Nonstatutory Stock Option Plan (the "Plan") and the Stock
Option Agreement dated, 19___ (the "Option Agreement").  The purchase price for
the Shares shall be $, as required by the Option Agreement.

     2.   Delivery of Payment.  Purchaser herewith delivers to the Company the
          -------------------
full purchase price for the Shares.

     3.   Representations of Purchaser.  Purchaser acknowledges that Purchaser
          ----------------------------
has received, read and understood the Plan and the Option Agreement and agrees
to abide by and be bound by their terms and conditions.

     4.   Rights as Shareholder.  Until the issuance (as evidenced by the
          ---------------------
appropriate entry on the books of the Company or of a duly authorized transfer
agent of the Company) of the Shares, no right to vote or receive dividends or
any other rights as a shareholder shall exist with respect to the Optioned
Stock, notwithstanding the exercise of the Option.  The Shares so acquired shall
be issued to the Optionee as soon as practicable after exercise of the Option.
No adjustment will be made for a dividend or other right for which the record
date is prior to the date of issuance, except as provided in Section 13 of the
Plan.

     5.   Tax Consultation.  Purchaser understands that Purchaser may suffer
          ----------------
adverse tax consequences as a result of Purchaser's purchase or disposition of
the Shares.  Purchaser represents that Purchaser has consulted with any tax
consultants Purchaser deems advisable in connection with the purchase or
disposition of the Shares and that Purchaser is not relying on the Company for
any tax advice.

     6.   Entire Agreement; Governing Law.  The Plan and Option Agreement are
          -------------------------------
incorporated herein by reference.  This Agreement, the Plan and the Option
Agreement constitute the entire agreement of the parties with respect to the
subject matter hereof and supersede in their entirety all prior undertakings and
agreements of the Company and Purchaser with respect to the subject matter

                                      -16-
<PAGE>

hereof, and may not be modified adversely to the Purchaser's interest except by
means of a writing signed by the Company and Purchaser.  This agreement is
governed by the internal substantive laws, but not the choice of law rules, of
California.

Submitted by:                       Accepted by:

PURCHASER                           EXPONENT, INC.

_________________________           ____________________________
Signature                           By

_________________________           ____________________________
Print Name                          Title

                                    ____________________________
                                    Date Received

Address:_________________       Address: 149 Commonwealth Drive
- -------                         -------
        _________________                Menlo Park, California  94025

        _________________


                                      -17-

<PAGE>

                                                                    EXHIBIT 99.2

                                EXPONENT, INC.

                            1999 STOCK OPTION PLAN


     1.   Purposes of the Plan. The purposes of this 1999 Stock Option Plan are:
          --------------------

          .    to attract and retain the best available personnel for positions
               of substantial responsibility,

          .    to provide additional incentive to Employees, Directors and
               Consultants, and

          .    to promote the success of the Company's business.

     Options granted under the Plan may be Incentive Stock Options or
Nonstatutory Stock Options, as determined by the Administrator at the time of
grant.  Stock Purchase Rights may also be granted under the Plan.

     2.   Definitions.  As used herein, the following definitions shall apply:
          -----------

          (a)  "Administrator" means the Board or any of its Committees as shall
                -------------
be administering the Plan, in accordance with Section 4 of the Plan.

          (b)  "Applicable Laws" means the requirements relating to the
                ---------------
administration of stock option plans under U. S. state corporate laws, U.S.
federal and state securities laws, the Code, any stock exchange or quotation
system on which the Common Stock is listed or quoted and the applicable laws of
any foreign country or jurisdiction where Options or Stock Purchase Rights are,
or will be, granted under the Plan.

          (c)  "Board" means the Board of Directors of the Company.
                -----

          (d)  "Code" means the Internal Revenue Code of 1986, as amended.
                ----

          (e)  "Committee"  means a committee of Directors appointed by the
                ---------
Board in accordance with Section 4 of the Plan.

          (f)  "Common Stock" means the common stock of the Company.
                ------------

          (g)  "Company" means Exponent, Inc., a Delaware corporation.
                -------

                                       1
<PAGE>

          (h)  "Consultant" means any person, including an advisor, engaged by
                ----------
the Company or a Parent or Subsidiary to render services to such entity.

          (i)  "Director" means a member of the Board.
                --------

          (j)  "Disability" means total and permanent disability as defined in
                ----------
Section 22(e)(3) of the Code.

          (k)  "Employee" means any person, including Officers and Directors,
                --------
employed by the Company or any Parent or Subsidiary of the Company.  A Service
Provider shall not cease to be an Employee in the case of (i) any leave of
absence approved by the Company or (ii) transfers between locations of the
Company or between the Company, its Parent, any Subsidiary, or any successor.
For purposes of Incentive Stock Options, no such leave may exceed ninety days,
unless reemployment upon expiration of such leave is guaranteed by statute or
contract.  If reemployment upon expiration of a leave of absence approved by the
Company is not so guaranteed, on the 181st day of such leave any Incentive Stock
Option held by the Optionee shall cease to be treated as an Incentive Stock
Option and shall be treated for tax purposes as a Nonstatutory Stock Option.
Neither service as a Director nor payment of a director's fee by the Company
shall be sufficient to constitute "employment" by the Company.

          (l)  "Exchange Act" means the Securities Exchange Act of 1934, as
                ------------
amended.

          (m)  "Fair Market Value" means, as of any date, the value of Common
                -----------------
Stock determined as follows:

               (i)    If the Common Stock is listed on any established stock
exchange or a national market system, including without limitation the Nasdaq
National Market or The Nasdaq SmallCap Market of The Nasdaq Stock Market, its
Fair Market Value shall be the mean between the closing high bid and the low
asked prices for the Common stock as quoted on such exchange or system for the
last market trading day prior to the time of determination, as reported in The
Wall Street Journal or such other source as the Administrator deems reliable;

               (ii)   If the Common Stock is regularly quoted by a recognized
securities dealer but selling prices are not reported, the Fair Market Value of
a Share of Common Stock shall be the mean between the closing high bid and low
asked prices for the Common Stock on the last market trading day prior to the
day of determination, as reported in The Wall Street Journal or such other
source as the Administrator deems reliable; or

               (iii)  In the absence of an established market for the Common
Stock, the Fair Market Value shall be determined in good faith by the
Administrator.

                                       2
<PAGE>

          (n)  "Incentive Stock Option" means an Option intended to qualify as
                ----------------------
an incentive stock option within the meaning of Section 422 of the Code and the
regulations promulgated thereunder.

          (o)  "Nonstatutory Stock Option" means an Option not intended to
                -------------------------
qualify as an Incentive Stock Option.

          (p)  "Notice of Grant" means a written or electronic notice evidencing
                ---------------
certain terms and conditions of an individual Option or Stock Purchase Right
grant.  The Notice of Grant is part of the Option Agreement.

          (q)  "Officer" means a person who is an officer of the Company within
                -------
the meaning of Section 16 of the Exchange Act and the rules and regulations
promulgated thereunder.

          (r)  "Option" means a stock option granted pursuant to the Plan.
                ------

          (s)  "Option Agreement" means an agreement between the Company and an
                ----------------
Optionee evidencing the terms and conditions of an individual Option grant.  The
Option Agreement is subject to the terms and conditions of the Plan.

          (t)  "Option Exchange Program" means a program whereby outstanding
                -----------------------
Options are surrendered in exchange for Options with a lower exercise price.

          (u)  "Optioned Stock" means the Common Stock subject to an Option or
                --------------
Stock Purchase Right.

          (v)  "Optionee" means the holder of an outstanding Option or Stock
                --------
Purchase Right granted under the Plan.

          (w)  "Parent" means a "parent corporation," whether now or hereafter
                ------
existing, as defined in Section 424(e) of the Code.

          (x)  "Plan" means this 1999 Stock Plan.
                ----

          (y)  "Restricted Stock" means shares of Common Stock acquired pursuant
                ----------------
to a grant of Stock Purchase Rights under Section 11 of the Plan.

          (z)  "Restricted Stock Purchase Agreement" means a written agreement
                -----------------------------------
between the Company and the Optionee evidencing the terms and restrictions
applying to stock purchased under a Stock Purchase Right.  The Restricted Stock
Purchase Agreement is subject to the terms and conditions of the Plan and the
Notice of Grant.

                                       3
<PAGE>

          (aa) "Rule 16b-3" means Rule 16b-3 of the Exchange Act or any
                ----------
successor to Rule 16b-3, as in effect when discretion is being exercised with
respect to the Plan.

          (bb) "Section 16(b)" means Section 16(b) of the Exchange Act.
                -------------

          (cc) "Service Provider" means an Employee, Director or Consultant.
                ----------------

          (dd) "Share" means a share of the Common Stock, as adjusted in
                -----
accordance with Section 13 of the Plan.

          (ee) "Stock Purchase Right" means the right to purchase Common Stock
                --------------------
pursuant to Section 11 of the Plan, as evidenced by a Notice of Grant.

          (ff) "Subsidiary" means a "subsidiary corporation", whether now or
                ----------
hereafter existing, as defined in Section 424(f) of the Code.

     3.   Stock Subject to the Plan.  Subject to the provisions of Section 13 of
          -------------------------
the Plan, the maximum aggregate number of Shares which may be optioned and sold
under the Plan is 400,000 Shares, plus an annual increase to be added on each
anniversary date of the adoption of the Plan equal to the lesser of (i) 300,000
Shares, (ii)  3% of the outstanding Shares on such date, or (iii) a lesser
amount determined by the Board.  The Shares may be authorized, but unissued, or
reacquired Common Stock.

          If an Option or Stock Purchase Right expires or becomes unexercisable
without having been exercised in full, or is surrendered pursuant to an Option
Exchange Program, the unpurchased Shares which were subject thereto shall become
available for future grant or sale under the Plan (unless the Plan has
terminated); provided, however, that Shares that have actually been issued under
             --------
the Plan, whether upon exercise of an Option or Right, shall not be returned to
the Plan and shall not become available for future distribution under the Plan,
except that if Shares of Restricted Stock are repurchased by the Company at
their original purchase price, such Shares shall become available for future
grant under the Plan.

     4.   Administration of the Plan.
          --------------------------

          (a)  Procedure.
               ---------

               (i)  Multiple Administrative Bodies. The Plan may be administered
                    ------------------------------
by different Committees with respect to different groups of Service Providers.

               (ii) Section 162(m).  To the extent that the Administrator
                    --------------
determines it to be desirable to qualify Options granted hereunder as
"performance-based compensation" within the

                                       4
<PAGE>

meaning of Section 162(m) of the Code, the Plan shall be administered by a
Committee of two or more "outside directors" within the meaning of Section
162(m) of the Code.

               (iii)  Rule 16b-3. To the extent desirable to qualify
                      ----------
transactions hereunder as exempt under Rule 16b-3, the transactions contemplated
hereunder shall be structured to satisfy the requirements for exemption under
Rule 16b-3.

               (iv)   Other Administration.  Other than as provided above, the
                      --------------------
Plan shall be administered by (A) the Board or (B) a Committee, which committee
shall be constituted to satisfy Applicable Laws.

          (b)  Powers of the Administrator.  Subject to the provisions of the
               ---------------------------
Plan, and in the case of a Committee, subject to the specific duties delegated
by the Board to such Committee, the Administrator shall have the authority, in
its discretion:

               (i)    to determine the Fair Market Value;

               (ii)   to select the Service Providers to whom Options and Stock
Purchase Rights may be granted hereunder;

               (iii)  to determine the number of shares of Common Stock to be
covered by each Option and Stock Purchase Right granted hereunder;

               (iv)   to approve forms of agreement for use under the Plan;

               (v)    to determine the terms and conditions, not inconsistent
with the terms of the Plan, of any Option or Stock Purchase Right granted
hereunder. Such terms and conditions include, but are not limited to, the
exercise price, the time or times when Options or Stock Purchase Rights may be
exercised (which may be based on performance criteria), any vesting acceleration
or waiver of forfeiture restrictions, and any restriction or limitation
regarding any Option or Stock Purchase Right or the shares of Common Stock
relating thereto, based in each case on such factors as the Administrator, in
its sole discretion, shall determine;

               (vi)   to reduce the exercise price of any Option or Stock
Purchase Right to the then current Fair Market Value if the Fair Market Value of
the Common Stock covered by such Option or Stock Purchase Right shall have
declined since the date the Option or Stock Purchase Right was granted;

               (vii)  to institute an Option Exchange Program;

               (viii) to construe and interpret the terms of the Plan and awards
granted pursuant to the Plan;

                                       5
<PAGE>

               (ix)   to prescribe, amend and rescind rules and regulations
relating to the Plan, including rules and regulations relating to sub-plans
established for the purpose of qualifying for preferred tax treatment under
foreign tax laws;

               (x)    to modify or amend each Option or Stock Purchase Right
(subject to Section 15(c) of the Plan), including the discretionary authority to
extend the post-termination exercisability period of Options longer than is
otherwise provided for in the Plan;

               (xi)   to allow Optionees to satisfy withholding tax obligations
by electing to have the Company withhold from the Shares to be issued upon
exercise of an Option or Stock Purchase Right that number of Shares having a
Fair Market Value equal to the amount required to be withheld. The Fair Market
Value of the Shares to be withheld shall be determined on the date that the
amount of tax to be withheld is to be determined. All elections by an Optionee
to have Shares withheld for this purpose shall be made in such form and under
such conditions as the Administrator may deem necessary or advisable;

               (xii)  to authorize any person to execute on behalf of the
Company any instrument required to effect the grant of an Option or Stock
Purchase Right previously granted by the Administrator;

               (xiii) to make all other determinations deemed necessary or
advisable for administering the Plan.

          (c)  Effect of Administrator's Decision.  The Administrator's
               ----------------------------------
decisions, determinations and interpretations shall be final and binding on all
Optionees and any other holders of Options or Stock Purchase Rights.

     5.   Eligibility.  Nonstatutory Stock Options and Stock Purchase Rights may
          -----------
be granted to Service Providers.  Incentive Stock Options may be granted only to
Employees.

     6.   Limitations.
          -----------

          (a)  Each Option shall be designated in the Option Agreement as either
an Incentive Stock Option or a Nonstatutory Stock Option. However,
notwithstanding such designation, to the extent that the aggregate Fair Market
Value of the Shares with respect to which Incentive Stock Options are
exercisable for the first time by the Optionee during any calendar year (under
all plans of the Company and any Parent or Subsidiary) exceeds $100,000, such
Options shall be treated as Nonstatutory Stock Options. For purposes of this
Section 6(a), Incentive Stock Options shall be taken into account in the order
in which they were granted. The Fair Market Value of the Shares shall be
determined as of the time the Option with respect to such Shares is granted.

                                       6
<PAGE>

          (b)  Neither the Plan nor any Option or Stock Purchase Right shall
confer upon an Optionee any right with respect to continuing the Optionee's
relationship as a Service Provider with the Company, nor shall they interfere in
any way with the Optionee's right or the Company's right to terminate such
relationship at any time, with or without cause.

          (c)  The following limitations shall apply to grants of Options:

               (i)    No Service Provider shall be granted, in any fiscal year
of the Company, Options to purchase more than 500,000 Shares.

               (ii)   In connection with his or her initial service, a Service
Provider may be granted Options to purchase up to an additional 500,000 Shares
which shall not count against the limit set forth in subsection (i) above.

               (iii)  The foregoing limitations shall be adjusted
proportionately in connection with any change in the Company's capitalization as
described in Section 13.

               (iv)   If an Option is cancelled in the same fiscal year of the
Company in which it was granted (other than in connection with a transaction
described in Section 13), the cancelled Option will be counted against the
limits set forth in subsections (i) and (ii) above.  For this purpose, if the
exercise price of an Option is reduced, the transaction will be treated as a
cancellation of the Option and the grant of a new Option.

     7.   Term of Plan. Subject to Section 19 of the Plan, the Plan shall become
          ------------
effective upon its adoption by the Board.  It shall continue in effect for a
term of ten (10) years unless terminated earlier under Section 15 of the Plan.

     8.   Term of Option.  The term of each Option shall be stated in the Option
          --------------
Agreement.  In the case of an Incentive Stock Option, the term shall be ten (10)
years from the date of grant or such shorter term as may be provided in the
Option Agreement.  Moreover, in the case of an Incentive Stock Option granted to
an Optionee who, at the time the Incentive Stock Option is granted, owns stock
representing more than ten percent (10%) of the total combined voting power of
all classes of stock of the Company or any Parent or Subsidiary, the term of the
Incentive Stock Option shall be five (5) years from the date of grant or such
shorter term as may be provided in the Option Agreement.

     9.   Option Exercise Price and Consideration.
          ---------------------------------------

          (a)  Exercise Price. The per share exercise price for the Shares to be
               --------------
issued pursuant to exercise of an Option shall be determined by the
Administrator, subject to the following:

               (i)    In the case of an Incentive Stock Option

                                       7
<PAGE>

                      (A)   granted to an Employee who, at the time the
Incentive Stock Option is granted, owns stock representing more than ten percent
(10%) of the voting power of all classes of stock of the Company or any Parent
or Subsidiary, the per Share exercise price shall be no less than 110% of the
Fair Market Value per Share on the date of grant.

                      (B)   granted to any Employee other than an Employee
described in paragraph (A) immediately above, the per Share exercise price shall
be no less than 100% of the Fair Market Value per Share on the date of grant.

               (ii)   In the case of a Nonstatutory Stock Option, the per Share
exercise price shall be determined by the Administrator.  In the case of a
Nonstatutory Stock Option intended to qualify as "performance-based
compensation" within the meaning of Section 162(m) of the Code, the per Share
exercise price shall be no less than 100% of the Fair Market Value per Share on
the date of grant.

               (iii)  Notwithstanding the foregoing, Options may be granted with
a per Share exercise price of less than 100% of the Fair Market Value per Share
on the date of grant pursuant to a merger or other corporate transaction.

          (b)  Waiting Period and Exercise Dates.  At the time an Option is
               ---------------------------------
granted, the Administrator shall fix the period within which the Option may be
exercised and shall determine any conditions which must be satisfied before the
Option may be exercised.

          (c)  Form of Consideration.  The Administrator shall determine the
               ---------------------
acceptable form of consideration for exercising an Option, including the method
of payment.  In the case of an Incentive Stock Option, the Administrator shall
determine the acceptable form of consideration at the time of grant.  Such
consideration may consist entirely of:

               (i)    cash;

               (ii)   check;

               (iii)  promissory note;

               (iv)   other Shares which (A) in the case of Shares acquired upon
exercise of an option, have been owned by the Optionee for more than six months
on the date of surrender, and (B) have a Fair Market Value on the date of
surrender equal to the aggregate exercise price of the Shares as to which said
Option shall be exercised;

               (v)    consideration received by the Company under a cashless
exercise program implemented by the Company in connection with the Plan;

                                       8
<PAGE>

               (vi)   a reduction in the amount of any Company liability to the
Optionee, including any liability attributable to the Optionee's participation
in any Company-sponsored deferred compensation program or arrangement;

               (vii)  any combination of the foregoing methods of payment; or

               (viii) such other consideration and method of payment for the
issuance of Shares to the extent permitted by Applicable Laws.

     10.  Exercise of Option.
          ------------------

          (a)  Procedure for Exercise; Rights as a Shareholder.  Any Option
               -----------------------------------------------
granted hereunder shall be exercisable according to the terms of the Plan and at
such times and under such conditions as determined by the Administrator and set
forth in the Option Agreement. Unless the Administrator provides otherwise,
vesting of Options granted hereunder shall be tolled during any unpaid leave of
absence. An Option may not be exercised for a fraction of a Share.

               An Option shall be deemed exercised when the Company receives:
(i) written or electronic notice of exercise (in accordance with the Option
Agreement) from the person entitled to exercise the Option, and (ii) full
payment for the Shares with respect to which the Option is exercised. Full
payment may consist of any consideration and method of payment authorized by the
Administrator and permitted by the Option Agreement and the Plan. Shares issued
upon exercise of an Option shall be issued in the name of the Optionee or, if
requested by the Optionee, in the name of the Optionee and his or her spouse.
Until the Shares are issued (as evidenced by the appropriate entry on the books
of the Company or of a duly authorized transfer agent of the Company), no right
to vote or receive dividends or any other rights as a shareholder shall exist
with respect to the Optioned Stock, notwithstanding the exercise of the Option.
The Company shall issue (or cause to be issued) such Shares promptly after the
Option is exercised. No adjustment will be made for a dividend or other right
for which the record date is prior to the date the Shares are issued, except as
provided in Section 13 of the Plan.

               Exercising an Option in any manner shall decrease the number of
Shares thereafter available, both for purposes of the Plan and for sale under
the Option, by the number of Shares as to which the Option is exercised.

          (b)  Termination of Relationship as a Service Provider. If an Optionee
               -------------------------------------------------
ceases to be a Service Provider, other than upon the Optionee's death or
Disability, the Optionee may exercise his or her Option within such period of
time as is specified in the Option Agreement to the extent that the Option is
vested on the date of termination (but in no event later than the expiration of
the term of such Option as set forth in the Option Agreement).  In the absence
of a specified time in the Option Agreement, the Option shall remain exercisable
for three (3) months following the Optionee's

                                       9
<PAGE>

termination. If, on the date of termination, the Optionee is not vested as to
his or her entire Option, the Shares covered by the unvested portion of the
Option shall revert to the Plan. If, after termination, the Optionee does not
exercise his or her Option within the time specified by the Administrator, the
Option shall terminate, and the Shares covered by such Option shall revert to
the Plan.

                                       10
<PAGE>

          (c)  Disability of Optionee.  If an Optionee ceases to be a Service
               ----------------------
Provider as a result of the Optionee's Disability, the Optionee may exercise his
or her Option within such period of time as is specified in the Option Agreement
to the extent the Option is vested on the date of termination (but in no event
later than the expiration of the term of such Option as set forth in the Option
Agreement).  In the absence of a specified time in the Option Agreement, the
Option shall remain exercisable for twelve (12) months following the Optionee's
termination.  If, on the date of termination, the Optionee is not vested as to
his or her entire Option, the Shares covered by the unvested portion of the
Option shall revert to the Plan.  If, after termination, the Optionee does not
exercise his or her Option within the time specified herein, the Option shall
terminate, and the Shares covered by such Option shall revert to the Plan.

          (d)  Death of Optionee.  If an Optionee dies while a Service Provider,
               -----------------
the Option may be exercised within such period of time as is specified in the
Option Agreement (but in no event later than the expiration of the term of such
Option as set forth in the Notice of Grant), by the Optionee's estate or by a
person who acquires the right to exercise the Option by bequest or inheritance,
but only to the extent that the Option is vested on the date of death.  In the
absence of a specified time in the Option Agreement, the Option shall remain
exercisable for twelve (12) months following the Optionee's termination.  If, at
the time of death, the Optionee is not vested as to his or her entire Option,
the Shares covered by the unvested portion of the Option shall immediately
revert to the Plan.  The Option may be exercised by the executor or
administrator of the Optionee's estate or, if none, by the person(s) entitled to
exercise the Option under the Optionee's will or the laws of descent or
distribution.  If the Option is not so exercised within the time specified
herein, the Option shall terminate, and the Shares covered by such Option shall
revert to the Plan.

          (e)  Buyout Provisions. The Administrator may at any time offer to buy
               -----------------
out for a payment in cash or Shares an Option previously granted based on such
terms and conditions as the Administrator shall establish and communicate to the
Optionee at the time that such offer is made.

     11.  Stock Purchase Rights.
          ---------------------

          (a)  Rights to Purchase.  Stock Purchase Rights may be issued either
               ------------------
alone, in addition to, or in tandem with other awards granted under the Plan
and/or cash awards made outside of the Plan.  After the Administrator determines
that it will offer Stock Purchase Rights under the Plan, it shall advise the
offeree in writing or electronically, by means of a Notice of Grant, of the
terms, conditions and restrictions related to the offer, including the number of
Shares that the offeree shall be entitled to purchase, the price to be paid, and
the time within which the offeree must accept such offer.  The offer shall be
accepted by execution of a Restricted Stock Purchase Agreement in the form
determined by the Administrator.

                                       11
<PAGE>

          (b)  Repurchase Option. Unless the Administrator determines otherwise,
               -----------------
the Restricted Stock Purchase Agreement shall grant the Company a repurchase
option exercisable upon the voluntary or involuntary termination of the
purchaser's service with the Company for any reason (including death or
Disability).  The purchase price for Shares repurchased pursuant to the
Restricted Stock Purchase Agreement shall be the original price paid by the
purchaser and may be paid by cancellation of any indebtedness of the purchaser
to the Company.  The repurchase option shall lapse at a rate determined by the
Administrator.

          (c)  Other Provisions.  The Restricted Stock Purchase Agreement shall
               ----------------
contain such other terms, provisions and conditions not inconsistent with the
Plan as may be determined by the Administrator in its sole discretion.

          (d)  Rights as a Shareholder.  Once the Stock Purchase Right is
               -----------------------
exercised, the purchaser shall have the rights equivalent to those of a
shareholder, and shall be a shareholder when his or her purchase is entered upon
the records of the duly authorized transfer agent of the Company.  No adjustment
will be made for a dividend or other right for which the record date is prior to
the date the Stock Purchase Right is exercised, except as provided in Section 13
of the Plan.

     12.  Non-Transferability of Options and Stock Purchase Rights.  Unless
          --------------------------------------------------------
determined otherwise by the Administrator, an Option or Stock Purchase Right may
not be sold, pledged, assigned, hypothecated, transferred, or disposed of in any
manner other than by will or by the laws of descent or distribution and may be
exercised, during the lifetime of the Optionee, only by the Optionee.  If the
Administrator makes an Option or Stock Purchase Right transferable, such Option
or Stock Purchase Right shall contain such additional terms and conditions as
the Administrator deems appropriate.

     13.  Adjustments Upon Changes in Capitalization, Dissolution, Merger or
          ------------------------------------------------------------------
Asset Sale.
- ----------

          (a)  Changes in Capitalization.  Subject to any required action by the
               -------------------------
shareholders of the Company, the number of shares of Common Stock covered by
each outstanding Option and Stock Purchase Right, and the number of shares of
Common Stock which have been authorized for issuance under the Plan but as to
which no Options or Stock Purchase Rights have yet been granted or which have
been returned to the Plan upon cancellation or expiration of an Option or Stock
Purchase Right, as well as the price per share of Common Stock covered by each
such outstanding Option or Stock Purchase Right, shall be proportionately
adjusted for any increase or decrease in the number of issued shares of Common
Stock resulting from a stock split, reverse stock split, stock dividend,
combination or reclassification of the Common Stock, or any other increase or
decrease in the number of issued shares of Common Stock effected without receipt
of consideration by the Company; provided, however, that conversion of any
convertible securities of the Company shall not be deemed to have been "effected
without receipt of consideration."  Such adjustment shall be made by the Board,
whose determination in that respect shall be final, binding and conclusive.
Except as

                                       12
<PAGE>

expressly provided herein, no issuance by the Company of shares of stock of any
class, or securities convertible into shares of stock of any class, shall
affect, and no adjustment by reason thereof shall be made with respect to, the
number or price of shares of Common Stock subject to an Option or Stock Purchase
Right.

          (b)  Dissolution or Liquidation.  In the event of the proposed
               --------------------------
dissolution or liquidation of the Company, the Administrator shall notify each
Optionee as soon as practicable prior to the effective date of such proposed
transaction.  The Administrator in its discretion may provide for an Optionee to
have the right to exercise his or her Option until ten (10) days prior to such
transaction as to all of the Optioned Stock covered thereby, including Shares as
to which the Option would not otherwise be exercisable.  In addition, the
Administrator may provide that any Company repurchase option applicable to any
Shares purchased upon exercise of an Option or Stock Purchase Right shall lapse
as to all such Shares, provided the proposed dissolution or liquidation takes
place at the time and in the manner contemplated.  To the extent it has not been
previously exercised, an Option or Stock Purchase Right will terminate
immediately prior to the consummation of such proposed action.

          (c)  Merger or Asset Sale.  In the event of a merger of the Company
               --------------------
with or into another corporation, or the sale of substantially all of the assets
of the Company, each outstanding Option and Stock Purchase Right shall be
assumed or an equivalent option or right substituted by the successor
corporation or a Parent or Subsidiary of the successor corporation. In the event
that the successor corporation refuses to assume or substitute for the Option or
Stock Purchase Right, the Optionee shall fully vest in and have the right to
exercise the Option or Stock Purchase Right as to all of the Optioned Stock,
including Shares as to which it would not otherwise be vested or exercisable. If
an Option or Stock Purchase Right becomes fully vested and exercisable in lieu
of assumption or substitution in the event of a merger or sale of assets, the
Administrator shall notify the Optionee in writing or electronically that the
Option or Stock Purchase Right shall be fully vested and exercisable for a
period of fifteen (15) days from the date of such notice, and the Option or
Stock Purchase Right shall terminate upon the expiration of such period. For the
purposes of this paragraph, the Option or Stock Purchase Right shall be
considered assumed if, following the merger or sale of assets, the option or
right confers the right to purchase or receive, for each Share of Optioned Stock
subject to the Option or Stock Purchase Right immediately prior to the merger or
sale of assets, the consideration (whether stock, cash, or other securities or
property) received in the merger or sale of assets by holders of Common Stock
for each Share held on the effective date of the transaction (and if holders
were offered a choice of consideration, the type of consideration chosen by the
holders of a majority of the outstanding Shares); provided, however, that if
such consideration received in the merger or sale of assets is not solely common
stock of the successor corporation or its Parent, the Administrator may, with
the consent of the successor corporation, provide for the consideration to be
received upon the exercise of the Option or Stock Purchase Right, for each Share
of Optioned Stock subject to the Option or Stock Purchase Right, to be solely
common stock of the successor corporation or its Parent equal in fair market
value to the per share consideration received by holders of Common Stock in the
merger or sale of assets.

                                       13
<PAGE>

     14.  Date of Grant.  The date of grant of an Option or Stock Purchase Right
          -------------
shall be, for all purposes, the date on which the Administrator makes the
determination granting such Option or Stock Purchase Right, or such other later
date as is determined by the Administrator.  Notice of the determination shall
be provided to each Optionee within a reasonable time after the date of such
grant.

     15.  Amendment and Termination of the Plan.
          -------------------------------------

          (a)  Amendment and Termination.  The Board may at any time amend,
               -------------------------
alter, suspend or terminate the Plan.

          (b)  Shareholder Approval.  The Company shall obtain shareholder
               --------------------
approval of any Plan amendment to the extent necessary and desirable to comply
with Applicable Laws.

          (c)  Effect of Amendment or Termination.  No amendment, alteration,
               ----------------------------------
suspension or termination of the Plan shall impair the rights of any Optionee,
unless mutually agreed otherwise between the Optionee and the Administrator,
which agreement must be in writing and signed by the Optionee and the Company.
Termination of the Plan shall not affect the Administrator's ability to exercise
the powers granted to it hereunder with respect to Options granted under the
Plan prior to the date of such termination.

     16.  Conditions Upon Issuance of Shares.
          ----------------------------------

          (a)  Legal Compliance.  Shares shall not be issued pursuant to the
               ----------------
exercise of an Option or Stock Purchase Right unless the exercise of such Option
or Stock Purchase Right and the issuance and delivery of such Shares shall
comply with Applicable Laws and shall be further subject to the approval of
counsel for the Company with respect to such compliance.

          (b)  Investment Representations.  As a condition to the exercise of an
               --------------------------
Option or Stock Purchase Right, the Company may require the person exercising
such Option or Stock Purchase Right to represent and warrant at the time of any
such exercise that the Shares are being purchased only for investment and
without any present intention to sell or distribute such Shares if, in the
opinion of counsel for the Company, such a representation is required.

     17.  Inability to Obtain Authority.  The inability of the Company to obtain
          -----------------------------
authority from any regulatory body having jurisdiction, which authority is
deemed by the Company's counsel to be necessary to the lawful issuance and sale
of any Shares hereunder, shall relieve the Company of any liability in respect
of the failure to issue or sell such Shares as to which such requisite authority
shall not have been obtained.

                                       14
<PAGE>

     18.  Reservation of Shares. The Company, during the term of this Plan, will
          ---------------------
at all times reserve and keep available such number of Shares as shall be
sufficient to satisfy the requirements of the Plan.

     19.  Shareholder Approval.  The Plan shall be subject to approval by the
          --------------------
shareholders of the Company within twelve (12) months after the date the Plan is
adopted.  Such shareholder approval shall be obtained in the manner and to the
degree required under Applicable Laws.

                                       15

<PAGE>

                                                                    EXHIBIT 99.3

                                EXPONENT, INC.

                          RESTRICTED STOCK AWARD PLAN

     1.   Purposes of the Plan.  The purposes of this Plan are:
          --------------------

          .    to provide additional incentive to Employees, and

          .    to promote the success of the Company's business.

     Restricted Stock Awards granted under the Plan.

     2.   Definitions. As used herein, the following definitions shall apply:
          -----------

          (a)  "Administrator" means the Board or any of its Committees as shall
                -------------
be administering the Plan, in accordance with Section 4 of the Plan.

          (b)  "Applicable Laws" means the requirements relating to the
                ---------------
administration of restricted stock award plans under U. S. state corporate laws,
U.S. federal and state securities laws, the Code, any stock exchange or
quotation system on which the Common Stock is listed or quoted and the
applicable laws of any foreign country or jurisdiction where Restricted Stock
Awards are, or will be, granted under the Plan.

          (c)  "Award" means the holder of an outstanding Restricted Stock Award
                -----
granted under the Plan.

          (d)  "Board" means the Board of Directors of the Company.
                -----

          (e)  "Code" means the Internal Revenue Code of 1986, as amended.
                ----

          (f)  "Committee" means a committee of Directors appointed by the Board
                ---------
in accordance with Section 4 of the Plan.

          (g)  "Common Stock" means the common stock of the Company.
                ------------

          (h)  "Company" means Exponent, Inc., a Delaware corporation.
                -------

          (i)  "Consultant" means any person, including an advisor, engaged by
                ----------
the Company or a Parent or Subsidiary to render services to such entity.

          (j)  "Director" means a member of the Board.
                --------

          (k)  "Disability" means total and permanent disability as defined in
                ----------
Section 22(e)(3) of the Code.
<PAGE>

          (l)  "Employee" means any person, including Officers and Directors,
                --------
employed by the Company or any Parent or Subsidiary of the Company.  A Service
Provider shall not cease to be an Employee in the case of (i) any leave of
absence approved by the Company or (ii) transfers between locations of the
Company or between the Company, its Parent, any Subsidiary, or any successor.
Neither service as a Director nor payment of a director's fee by the Company
shall be sufficient to constitute "employment" by the Company.

          (m)  "Exchange Act" means the Securities Exchange Act of 1934, as
                ------------
amended.

          (n)  "Fair Market Value" means, as of any date, the value of Common
                -----------------
Stock determined as follows:

               (i)   If the Common Stock is listed on any established stock
exchange or a national market system, including without limitation the Nasdaq
National Market or The Nasdaq SmallCap Market of The Nasdaq Stock Market, its
Fair Market Value shall be the closing sales price for such stock (or the
closing bid, if no sales were reported) as quoted on such exchange or system for
the last market trading day prior to the time of determination, as reported in
The Wall Street Journal or such other source as the Administrator deems
reliable;

               (ii)  If the Common Stock is regularly quoted by a recognized
securities dealer but selling prices are not reported, the Fair Market Value of
a Share of Common Stock shall be the mean between the high bid and low asked
prices for the Common Stock on the last market trading day prior to the day of
determination, as reported in The Wall Street Journal or such other source as
the Administrator deems reliable; or

               (iii) In the absence of an established market for the Common
Stock, the Fair Market Value shall be determined in good faith by the
Administrator.

          (o)  "Notice of Grant" means a written or electronic notice evidencing
                ---------------
certain terms and conditions of an individual Restricted Stock Award grant.  The
Notice of Grant is part of the Restricted Stock Award Agreement.

          (p)  "Officer" means a person who is an officer of the Company within
                -------
the meaning of Section 16 of the Exchange Act and the rules and regulations
promulgated thereunder.

          (q)  "Optioned Stock" means the Common Stock subject to a Restricted
                --------------
Stock Award.

          (r)  "Parent" means a "parent corporation," whether now or hereafter
                ------
existing, as defined in Section 424(e) of the Code.

          (s)  "Plan" means this Restricted Stock Award Plan.
                ----

          (t)  "Restricted Stock Award" means shares of Common Stock granted
                ----------------------
pursuant to Section 7 of the Plan.

                                      -2-
<PAGE>

          (u)  "Restricted Stock Award Agreement" means a written agreement
                --------------------------------
between the Company and the Optionee evidencing the terms and restrictions
applying to stock awarded under a Restricted Stock Award.  The Restricted Stock
Award Agreement is subject to the terms and conditions of the Plan and the
Notice of Grant.

          (v)  "Rule 16b-3" means Rule 16b-3 of the Exchange Act or any
                ----------
successor to Rule 16b-3, as in effect when discretion is being exercised with
respect to the Plan.

          (w)  "Section 16(b) " means Section 16(b) of the Exchange Act.
                -------------

          (x)  "Service Provider" means an Employee, Director or Consultant.
                ----------------

          (y)  "Share" means a share of the Common Stock, as adjusted in
                -----
accordance with Section 13 of the Plan.

          (z)  "Subsidiary" means a "subsidiary corporation", whether now or
                ----------
hereafter existing, as defined in Section 424(f) of the Code.

          3.   Stock Subject to the Plan. Subject to the provisions of Section 9
               -------------------------
of the Plan, the maximum aggregate number of Shares which may be optioned and
granted under the Plan is 100,000 Shares. The Shares may be authorized, but
unissued, or reacquired Common Stock.

          If a Restricted Stock Award expires or becomes unexercisable without
having been acquired in full, the unacquired Shares which were subject thereto
shall become available for future grant under the Plan (unless the Plan has
terminated); provided, however, that Shares that have actually been issued under
             --------
the Plan shall not be returned to the Plan and shall not become available for
future distribution under the Plan, except Shares that are reacquired by the
Company shall become available for future grant under the Plan.

          4.   Administration of the Plan.
               --------------------------

               (a)  Procedure.
                    ---------

                    (i)   Multiple Administrative Bodies. The Plan may be
                          ------------------------------
administered by different Committees with respect to different groups of Service
Providers.

                    (ii)  Rule 16b-3. To the extent desirable to qualify
                          ----------
transactions hereunder as exempt under Rule 16b-3, the transactions contemplated
hereunder shall be structured to satisfy the requirements for exemption under
Rule 16b-3.

                    (iii) Other Administration. Other than as provided above,
                          --------------------
the Plan shall be administered by (A) the Board or (B) a Committee, which
committee shall be constituted to satisfy Applicable Laws.

                                      -3-
<PAGE>

          (b)  Powers of the Administrator.  Subject to the provisions of the
               ---------------------------
Plan, and in the case of a Committee, subject to the specific duties delegated
by the Board to such Committee, the Administrator shall have the authority, in
its discretion:

               (i)    to determine the Fair Market Value;

               (ii)   to select the Service Providers to whom Restricted Stock
Awards may be granted hereunder;

               (iii)  to determine the number of shares of Common Stock to be
covered by each Restricted Stock Award granted hereunder;

               (iv)   to approve forms of agreement for use under the Plan;

               (v)    to determine the terms and conditions, not inconsistent
with the terms of the Plan, of any Restricted Stock Awards granted hereunder.
Such terms and conditions include, but are not limited to, the time or times
when Restricted Stock Awards may be exercised (which may be based on performance
criteria), any vesting acceleration or waiver of forfeiture restrictions, and
any restriction or limitation regarding any Restricted Stock Award or the shares
of Common Stock relating thereto, based in each case on such factors as the
Administrator, in its sole discretion, shall determine;

               (vi)   to construe and interpret the terms of the Plan and awards
granted pursuant to the Plan;

               (vii)  to prescribe, amend and rescind rules and regulations
relating to the Plan, including rules and regulations relating to sub-plans
established for the purpose of qualifying for preferred tax treatment under
foreign tax laws;

               (viii) to modify or amend each Restricted Stock Award (subject to
Section 11(c) of the Plan);

               (ix)   to authorize any person to execute on behalf of the
Company any instrument required to effect the grant of a Restricted Stock Award
previously granted by the Administrator;

               (x)    to allow employees receiving Restricted Stock to satisfy
withholding tax obligations by electing to have the Company withhold from the
Shares to be issued or purchase from the Shares issued that number of Shares
having a Fair Market Value equal to the amount required to be withheld.  The
Fair Market Value of the Shares to be withheld shall be determined on the date
that the amount of tax to be withheld is to be determined.  All elections by an
employee to have Shares withheld for this purpose shall be made in such form and
under such conditions as the Administrator may deem necessary or advisable;

               (xi)   to make all other determinations deemed necessary or
advisable for administering the Plan.

                                      -4-
<PAGE>

          (c)  Effect of Administrator's Decision.  The Administrator's
               ----------------------------------
decisions, determinations and interpretations shall be final and binding on all
Optionees and any other holders of Restricted Stock Awards.

     5.   Eligibility. Restricted Stock Awards may be granted to Employees;
          -----------
provided, however, that Employees who own at least three percent (3%) of the
Company's outstanding Common Stock may not receive Restricted Stock Awards under
the Plan. Neither the Plan nor any Restricted Stock Award shall confer upon an
Optionee any right with respect to continuing the Optionee's relationship as a
Service Provider with the Company, nor shall they interfere in any way with the
Optionee's right or the Company's right to terminate such relationship at any
time, with or without cause.

     6.   Term of Plan.  Subject to Section 15 of the Plan, the Plan shall
          ------------
become effective upon its adoption by the Board.  It shall continue in effect
for a term of ten (10) years unless terminated earlier under Section 11 of the
Plan.

     7.   Terms of Restricted Stock Awards.
          --------------------------------

          (a)  Rights to Acquire. Restricted Stock Awards may be issued
               -----------------
either alone, in addition to, or in tandem with cash awards made outside of the
Plan. After the Administrator determines that it will offer Restricted Stock
Awards under the Plan, it shall advise the offeree in writing or electronically,
by means of a Notice of Grant, of the terms, conditions and restrictions related
to the offer, including the number of Shares that the offeree shall be entitled
to acquire and the time within which the offeree must accept such offer. The
offer shall be accepted by execution of a Restricted Stock Award Agreement in
the form determined by the Administrator.

          (b)  Reacquisition Option.  Unless the Administrator determines
               --------------------
otherwise, the Restricted Stock Award Agreement shall grant the Company a
reacquisition option exercisable upon the voluntary or involuntary termination
of the participant's service with the Company for any reason (including death or
Disability).  The reacquisition option shall lapse at a rate determined by the
Administrator.

          (c)  Other Provisions. The Restricted Stock Award Agreement shall
               ----------------
contain such other terms, provisions and conditions not inconsistent with the
Plan as may be determined by the Administrator in its sole discretion.

          (d)  Rights as a Shareholder.  Once the Restricted Stock Award is
               -----------------------
exercised, the participant shall have the rights equivalent to those of a
shareholder, and shall be a shareholder when his or her acquisition is entered
upon the records of the duly authorized transfer agent of the Company. No
adjustment will be made for a dividend or other right for which the record date
is prior to the date the Restricted Stock Award is exercised, except as provided
in Section 9 of the Plan.

     8.   Put Right.  Issues:
          ---------

                         (1)  Accounting - additional Compensation Expense

                                      -5-
<PAGE>

                         (2)  Tax - avoid deemed dividend treatment

                         (3)  Section 16 - additional derivative security

                         (4)  Corporate - to the extent Company legally allowed
                              to redeem its shares


     9.   Non-Transferability of Restricted Stock Awards.  Unless determined
          ----------------------------------------------
otherwise by the Administrator, a Restricted Stock Award may not be sold,
pledged, assigned, hypothecated, transferred, or disposed of in any manner other
than by will or by the laws of descent or distribution and may be exercised,
during the lifetime of the Optionee, only by the Optionee. If the Administrator
makes a Restricted Stock Award transferable, such Restricted Stock Award shall
contain such additional terms and conditions as the Administrator deems
appropriate.

     10.  Adjustments Upon Changes in Capitalization, Dissolution, Merger
          ---------------------------------------------------------------
or Asset Sale.
- -------------

          (a)  Changes in Capitalization.  Subject to any required action by the
               -------------------------
shareholders of the Company, the number of shares of Common Stock covered by
each outstanding Restricted Stock Award, and the number of shares of Common
Stock which have been authorized for issuance under the Plan but as to which no
Restricted Stock Awards have yet been granted or which have been returned to the
Plan upon cancellation or expiration of a Restricted Stock Award, shall be
proportionately adjusted for any increase or decrease in the number of issued
shares of Common Stock resulting from a stock split, reverse stock split, stock
dividend, combination or reclassification of the Common Stock, or any other
increase or decrease in the number of issued shares of Common Stock effected
without receipt of consideration by the Company; provided, however, that
conversion of any convertible securities of the Company shall not be deemed to
have been "effected without receipt of consideration." Such adjustment shall be
made by the Board, whose determination in that respect shall be final, binding
and conclusive. Except as expressly provided herein, no issuance by the Company
of shares of stock of any class, or securities convertible into shares of stock
of any class, shall affect, and no adjustment by reason thereof shall be made
with respect to, the number of shares of Common Stock subject to a Restricted
Stock Award.

          (b)  Dissolution or Liquidation.  In the event of the proposed
               --------------------------
dissolution or liquidation of the Company, the Administrator shall notify each
Awardee and holder of Restricted Stock as soon as practicable prior to the
effective date of such proposed transaction. The Administrator may provide that
any Company reacquisition right applicable to any Shares acquired upon exercise
of a Restricted Stock Award shall lapse as to all such Shares, provided the
proposed dissolution or liquidation takes place at the time and in the manner
contemplated. To the extent it has not been previously exercised, a Restricted
Stock Award will terminate immediately prior to the consummation of such
proposed action.

          (c)  Merger or Asset Sale.  [In the event of a merger of the Company
               --------------------
with or into another corporation, or the sale of substantially all of the assets
of the Company, the new substituted or additional securities received for the
Restricted Stock shall be subject to the same reacquisition right by the Company
or the successor corporation. In the event that the successor corporation

                                      -6-
<PAGE>

refuses to assume or substitute for options issued by the Company, the holders
of Restricted Stock shall fully vest in and the Company's reacquisition shall
fully lapse as to all the Restricted Stock. If a Restricted Stock becomes fully
vested in the event of a merger or sale of assets, the Administrator shall
notify the holder of Restricted Stock in writing or electronically that the
Restricted Stock shall be fully vested as of the date of the transaction.]

          11.  Date of Grant.  The date of grant of a Restricted Stock Award
               -------------
shall be, for all purposes, the date on which the Administrator makes the
determination granting such Restricted Stock Award, or such other later date as
is determined by the Administrator.  Notice of the determination shall be
provided to each Optionee within a reasonable time after the date of such grant.

          12.  Amendment and Termination of the Plan.
               -------------------------------------

               (a)  Amendment and Termination.  The Board may at any time amend,
                    -------------------------
alter, suspend or terminate the Plan.

               (b)  Shareholder Approval.  The Company shall obtain shareholder
                    --------------------
approval of any Plan amendment to the extent necessary and desirable to comply
with Applicable Laws.

               (c)  Effect of Amendment or Termination. No amendment,
                    ----------------------------------
alteration, suspension or termination of the Plan shall impair the rights of any
Optionee, unless mutually agreed otherwise between the Optionee and the
Administrator, which agreement must be in writing and signed by the Optionee and
the Company. Termination of the Plan shall not affect the Administrator's
ability to exercise the powers granted to it hereunder with respect to
Restricted Stock Awards granted under the Plan prior to the date of such
termination.

     13.  Conditions Upon Issuance of Shares.
          ----------------------------------

          (a)  Legal Compliance.  Shares shall not be issued pursuant to the
               ----------------
exercise of a Restricted Stock Award unless the exercise of such Restricted
Stock Award and the issuance and delivery of such Shares shall comply with
Applicable Laws and shall be further subject to the approval of counsel for the
Company with respect to such compliance.

          (b)  Investment Representations.  As a condition to the exercise of a
               --------------------------
Restricted Stock Award, the Company may require the person exercising such
Restricted Stock Award to represent and warrant at the time of any such exercise
that the Shares are being acquired only for investment and without any present
intention to sell or distribute such Shares if, in the opinion of counsel for
the Company, such a representation is required.

     14.  Inability to Obtain Authority.  The inability of the Company to
          -----------------------------
obtain authority from any regulatory body having jurisdiction, which authority
is deemed by the Company's counsel to be necessary to the lawful issuance and
sale of any Shares hereunder, shall relieve the Company of any liability in
respect of the failure to issue or sell such Shares as to which such requisite
authority shall not have been obtained.

                                      -7-
<PAGE>

     15.  Reservation of Shares.  The Company, during the term of this
          ---------------------
Plan, will at all times reserve and keep available such number of Shares as
shall be sufficient to satisfy the requirements of the Plan.

     16.  Shareholder Approval.  The Plan shall be subject to approval by
          --------------------
the shareholders of the Company within twelve (12) months after the date the
Plan is adopted. Such shareholder approval shall be obtained in the manner and
to the degree required under Applicable Laws.

                                      -8-
<PAGE>

                                EXPONENT, INC.

                          RESTRICTED STOCK AWARD PLAN

                   NOTICE OF GRANT OF RESTRICTED STOCK AWARD

     Unless otherwise defined herein, the terms defined in the Plan shall have
the same defined meanings in this Notice of Grant.

     [Grantee's Name and Address]

     You have been granted the right to acquire Common Stock of the Company,
subject to the Company's Reacquisition Option and your ongoing status as a
Service Provider (as described in the Plan and the attached Restricted Stock
Award), as follows:

     Grant Number                       _________________________

     Date of Grant                      _________________________

     Total Number of Shares Subject     _________________________
     to This Restricted Stock Award

     Expiration Date:                   _________________________

     YOU MUST EXERCISE THIS RESTRICTED STOCK AWARD BEFORE THE EXPIRATION DATE OR
IT WILL TERMINATE AND YOU WILL HAVE NO FURTHER RIGHT TO ACQUIRE THE SHARES. By
your signature and the signature of the Company's representative below, you and
the Company agree that this Restricted Stock Award is granted under and governed
by the terms and conditions of the Restricted Stock Award Plan and the
Restricted Stock Award Agreement, attached hereto as Exhibit A, both of which
are made a part of this document. You further agree to execute the attached
Restricted Stock Award Agreement as a condition to acquiring any shares under
this Restricted Stock Award Right.

GRANTEE:                            EXPONENT, INC.

_____________________               _______________________________
Signature                           By

_____________________               _______________________________
Print Name                          Title
<PAGE>

                                   EXHIBIT A
                                   ---------

                                EXPONENT, INC.

                               STOCK AWARD PLAN

                       RESTRICTED STOCK AWARD AGREEMENT

     Unless otherwise defined herein, the terms defined in the Plan shall have
the same defined meanings in this Restricted Stock Award Agreement.

     WHEREAS the Participant named in the Notice of Grant, (the "Participant")
is a Service Provider, and the Participant's continued participation is
considered by the Company to be important for the Company's continued growth;
and

     WHEREAS in order to give the Participant an opportunity to acquire an
equity interest in the Company as an incentive for the Participant to
participate in the affairs of the Company, the Administrator has granted to the
Participant a Restricted Stock Award subject to the terms and conditions of the
Plan and the Notice of Grant, which are incorporated herein by reference, and
pursuant to this Restricted Stock Award Agreement (the "Agreement").

     NOW THEREFORE, the parties agree as follows:

     1.   Transfer of Stock.  The Company hereby agrees to award to the
          -----------------
Participant and the Participant hereby agrees to accept shares of the Company's
Common Stock (the "Shares").

     2.   Reacquisition Option.
          --------------------

          (a)  In the event the Participant ceases to be a Service Provider for
any or no reason (including death or disability) before all of the Shares are
released from the Company's Reacquisition Option (see Section 3), the Company
shall, upon the date of such termination (as reasonably fixed and determined by
the Company) have an irrevocable, exclusive option (the "Reacquisition Option")
for a period of sixty (60) days from such date to receive, without payment or
future consideration, up to that number of shares which constitute the
Unreleased Shares (as defined in Section 3). The Reacquisition Option shall be
exercised by the Company by delivering written notice to the Participant or the
Participant's executor (with a copy to the Escrow Holder). Upon delivery of such
notice, the Company shall become the legal and beneficial owner of the Shares
being reacquired and all rights and interests therein or relating thereto, and
the Company shall have the right to retain and transfer to its own name the
number of Shares being reacquired by the Company.

          (b)  Whenever the Company shall have the right to reacquire Shares
hereunder, the Company may designate and assign one or more employees, officers,
directors or shareholders of the
<PAGE>

Company or other persons or organizations to exercise all or a part of the
Company's acquisition rights under this Agreement.

     3.   Release of Shares From Reacquisition Option.
          -------------------------------------------

          (a)  One-third of the Shares shall be released from the Company's
Reacquisition Option each year on the anniversary of the Date of Grant provided
that the Participant does not cease to be a Service Provider prior to the date
of any such release.

          (b)  Any of the Shares that have not yet been released from the
Reacquisition Option are referred to herein as "Unreleased Shares."

          (c)  The Shares that have been released from the Reacquisition Option
shall be delivered to the Participant at the Participant's request (see Section
5).

     4.   Restriction on Transfer.  Except for the escrow described in Section 6
          -----------------------
or the transfer of the Shares to the Company or its assignees contemplated by
this Agreement, none of the Shares or any beneficial interest therein shall be
transferred, encumbered or otherwise disposed of in any way until such Shares
are released from the Company's Reacquisition Option in accordance with the
provisions of this Agreement, other than by will or the laws of descent and
distribution.

     5.   Escrow of Shares.
          ----------------

          (a)  To ensure the availability for delivery of the Participant's
Unreleased Shares upon reacquisition by the Company pursuant to the Repurchase
Option, the Participant shall, upon execution of this Agreement, deliver and
deposit with an escrow holder designated by the Company (the "Escrow Holder")
the share certificates representing the Unreleased Shares, together with the
stock assignment duly endorsed in blank, attached hereto as Exhibit A-2.  The
Unreleased Shares and stock assignment shall be held by the Escrow Holder,
pursuant to the Joint Escrow Instructions of the Company and Participant
attached hereto as Exhibit A-3, until such time as the Company's Reacquisition
Option expires.  As a further condition to the Company's obligations under this
Agreement, the Company may require the spouse of Participant, if any, to execute
and deliver to the Company the Consent of Spouse attached hereto as Exhibit A-4.

          (b)  The Escrow Holder shall not be liable for any act it may do or
omit to do with respect to holding the Unreleased Shares in escrow while acting
in good faith and in the exercise of its judgment.

          (c)  If the Company or any assignee exercises the Reacquisition Option
hereunder, the Escrow Holder, upon receipt of written notice of such exercise
from the proposed transferee, shall take all steps necessary to accomplish such
transfer.

          (d)  When the Reacquisition Option has been exercised or expires
unexercised or a portion of the Shares has been released from the Reacquisition
Option, upon request the Escrow Holder shall promptly cause a new certificate to
be issued for the released Shares and shall deliver the certificate to the
Company or the Participant, as the case may be.

                                     -2-
<PAGE>

          (e)  Subject to the terms hereof, the Participant shall have all the
rights of a shareholder with respect to the Shares while they are held in
escrow, including without limitation, the right to vote the Shares and to
receive any cash dividends declared thereon. If, from time to time during the
term of the Reacquisition Option, there is (i) any stock dividend, stock split
or other change in the Shares, or (ii) any merger or sale of all or
substantially all of the assets or other acquisition of the Company, any and all
new, substituted or additional securities to which the Participant is entitled
by reason of the Participant's ownership of the Shares shall be immediately
subject to this escrow, deposited with the Escrow Holder and included thereafter
as "Shares" for purposes of this Agreement and the Reacquisition Option.

     6.   Legends.  The share certificate evidencing the Shares, if any,  issued
          -------
hereunder shall be endorsed with the following legend (in addition to any legend
required under applicable state securities laws):

     THE SHARES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO CERTAIN
RESTRICTIONS UPON TRANSFER AND RIGHTS OF REACQUISITION AS SET FORTH IN AN
AGREEMENT BETWEEN THE COMPANY AND THE SHAREHOLDER, A COPY OF WHICH IS ON FILE
WITH THE SECRETARY OF THE COMPANY.

     7.   Adjustment for Stock Split.  All references to the number of Shares in
          --------------------------
this Agreement shall be appropriately adjusted to reflect any stock split, stock
dividend or other change in the Shares which may be made by the Company after
the date of this Agreement.

     8.   Tax Consequences.  The Participant has reviewed with the Participant's
          ----------------
own tax advisors the federal, state, local and foreign tax consequences of this
investment and the transactions contemplated by this Agreement. The Participant
is relying solely on such advisors and not on any statements or representations
of the Company or any of its agents. The Participant understands that the
Participant (and not the Company) shall be responsible for the Participant's own
tax liability that may arise as a result of the transactions contemplated by
this Agreement. The Participant understands that Section 83 of the Internal
Revenue Code of 1986, as amended (the "Code"), taxes as ordinary income the
difference between the Fair Market Value of the Shares on the date of
acquisition and the Fair Market Value of the Shares as of the date any
restrictions on the Shares lapse. In this context, "restriction" includes the
right of the Company to reacquire the Shares pursuant to the Reacquisition
Option. The Participant understands that the Participant may elect to be taxed
at the time the Shares are acquired rather than when and as the Reacquisition
Option expires by filing an election under Section 83(b) of the Code with the
IRS within 30 days from the date of purchase. The form for making this election
is attached as Exhibit A-5 hereto.

     THE PARTICIPANT ACKNOWLEDGES THAT IT IS THE PARTICIPANT'S SOLE
RESPONSIBILITY AND NOT THE COMPANY'S TO FILE TIMELY THE ELECTION UNDER SECTION
83(b), EVEN IF THE PARTICIPANT REQUESTS THE COMPANY OR ITS REPRESENTATIVES TO
MAKE THIS FILING ON THE PARTICIPANT'S BEHALF.

                                      -3-
<PAGE>

     9.   General Provisions.
          ------------------

          (a)  This Agreement shall be governed by the internal substantive
laws, but not the choice of law rules of California. This Agreement, subject to
the terms and conditions of the Plan and the Notice of Grant, represents the
entire agreement between the parties with respect to the acquisition of the
Shares by the Participant. Subject to Section 11(c) of the Plan, in the event of
a conflict between the terms and conditions of the Plan and the terms and
conditions of this Agreement, the terms and conditions of the Plan shall
prevail. Unless otherwise defined herein, the terms defined in the Plan shall
have the same defined meanings in this Agreement.

          (b)  Any notice, demand or request required or permitted to be given
by either the Company or the Participant pursuant to the terms of this Agreement
shall be in writing and shall be deemed given when delivered personally or
deposited in the U.S. mail, First Class with postage prepaid, and addressed to
the parties at the addresses of the parties set forth at the end of this
Agreement or such other address as a party may request by notifying the other in
writing.

     Any notice to the Escrow Holder shall be sent to the Company's address with
a copy to the other party hereto.

          (c)  The rights of the Company under this Agreement shall be
transferable to any one or more persons or entities, and all covenants and
agreements hereunder shall inure to the benefit of, and be enforceable by the
Company's successors and assigns. The rights and obligations of the Participant
under this Agreement may only be assigned with the prior written consent of the
Company.

          (d)  Either party's failure to enforce any provision of this Agreement
shall not in any way be construed as a waiver of any such provision, nor prevent
that party from thereafter enforcing any other provision of this Agreement.  The
rights granted both parties hereunder are cumulative and shall not constitute a
waiver of either party's right to assert any other legal remedy available to it.

          (e)  The Participant agrees upon request to execute any further
documents or instruments necessary or desirable to carry out the purposes or
intent of this Agreement.

          (f)  PARTICIPANT ACKNOWLEDGES AND AGREES THAT THE VESTING OF SHARES
PURSUANT TO SECTION 3 HEREOF IS EARNED ONLY BY CONTINUING SERVICE AS A SERVICE
PROVIDER AT THE WILL OF THE COMPANY (AND NOT THROUGH THE ACT OF BEING HIRED OR
ACQUIRING SHARES HEREUNDER). PARTICIPANT FURTHER ACKNOWLEDGES AND AGREES THAT
THIS AGREEMENT, THE TRANSACTIONS CONTEMPLATED HEREUNDER AND THE VESTING SCHEDULE
SET FORTH HEREIN DO NOT CONSTITUTE AN EXPRESS OR IMPLIED PROMISE OF CONTINUED
ENGAGEMENT AS A SERVICE PROVIDER FOR THE VESTING PERIOD, FOR ANY PERIOD, OR AT
ALL, AND SHALL NOT INTERFERE WITH PARTICIPANT'S RIGHT OR THE COMPANY'S RIGHT TO
TERMINATE PARTICIPANT'S RELATIONSHIP AS A SERVICE PROVIDER AT ANY TIME, WITH OR
WITHOUT CAUSE.

                                      -4-
<PAGE>

     By Participant's signature below, Participant represents that he or she is
familiar with the terms and provisions of the Plan, and hereby accepts this
Agreement subject to all of the terms and provisions thereof.  Participant has
reviewed the Plan and this Agreement in their entirety, has had an opportunity
to obtain the advice of counsel prior to executing this Agreement and fully
understands all provisions of this Agreement.  Participant agrees to accept as
binding, conclusive and final all decisions or interpretations of the
Administrator upon any questions arising under the Plan or this Agreement.
Participant further agrees to notify the Company upon any change in the
residence indicated in the Notice of Grant.

DATED:  _____________________

PARTICIPANT:                            EXPONENT, INC.


__________________________________      _______________________________________
Signature                               By


__________________________________      _______________________________________
Print Name                              Title

                                      -5-
<PAGE>

                                  EXHIBIT A-2
                                  -----------

                     ASSIGNMENT SEPARATE FROM CERTIFICATE

     FOR VALUE RECEIVED I, __________________________, hereby sell, assign and
transfer unto ____________________________________________ (__________) shares
of the Common Stock of Exponent, Inc. standing in my name of the books of said
corporation represented by Certificate No. _____ herewith and do hereby
irrevocably constitute and appoint ______________________ to transfer the said
stock on the books of the within named corporation with full power of
substitution in the premises.

     This Stock Assignment may be used only in accordance with the Restricted
Stock Award Agreement (the "Agreement") between Exponent, Inc. and the
undersigned dated ______________, 19__.

Dated: _______________, 19__


                                       Signature: ______________________________
<PAGE>

INSTRUCTIONS: Please do not fill in any blanks other than the signature line.
The purpose of this assignment is to enable the Company to exercise the
Reacquisition Option, as set forth in the Agreement, without requiring
additional signatures on the part of the Participant.

                                      -2-
<PAGE>

                                  EXHIBIT A-3
                                  -----------

                           JOINT ESCROW INSTRUCTIONS
                           -------------------------

                                                                __________, 19__

Corporate Secretary
Exponent, Inc.
[Address]

Dear ___________:

     As Escrow Agent for both Exponent, Inc., a Delaware corporation (the
"Company"), and the undersigned participant (the "Participant"), you are hereby
authorized and directed to hold the documents delivered to you pursuant to the
terms of that certain Restricted Stock Award Agreement ("Agreement") between the
Company and the undersigned, in accordance with the following instructions:

     1.   In the event the Company and/or any assignee of the Company (referred
to collectively as the "Company") exercises the Company's Reacquisition Option
set forth in the Agreement, the Company shall give to Participant and you a
written notice specifying the number of shares of stock to be reacquired and the
time for a closing hereunder at the principal office of the Company. Participant
and the Company hereby irrevocably authorize and direct you to close the
transaction contemplated by such notice in accordance with the terms of said
notice.

     2.   At the closing, you are directed (a) to date the stock assignments
necessary for the transfer in question, (b) to fill in the number of shares
being transferred, and (c) to deliver same, together with the certificate
evidencing the shares of stock to be transferred, to the Company or its assignee
pursuant to the exercise of the Company's Reacquisition Option.

     3.   Participant irrevocably authorizes the Company to deposit with you any
certificates evidencing shares of stock to be held by you hereunder and any
additions and substitutions to said shares as defined in the Agreement.
Participant does hereby irrevocably constitute and appoint you as Participant's
attorney-in-fact and agent for the term of this escrow to execute with respect
to such securities all documents necessary or appropriate to make such
securities negotiable and to complete any transaction herein contemplated,
including but not limited to the filing with any applicable state blue sky
authority of any required applications for consent to, or notice of transfer of,
the securities.  Subject to the provisions of this paragraph 3, Participant
shall exercise all rights and privileges of a shareholder of the Company while
the stock is held by you.

     4.   Upon written request of the Participant, but no more than once per
calendar year, unless the Company's Reacquisition Option has been exercised, you
shall deliver to Participant a certificate or certificates representing so many
shares of stock as are not then subject to the
<PAGE>

Company's Reacquisition Option. Within 90 days after Participant ceases to be a
Service Provider, you shall deliver to Participant a certificate or certificates
representing the aggregate number of shares held or issued pursuant to the
Agreement and not acquired by the Company or its assignees pursuant to exercise
of the Company's Reacquisition Option.

     5.   If at the time of termination of this escrow you should have in your
possession any documents, securities, or other property belonging to
Participant, you shall deliver all of the same to Participant and shall be
discharged of all further obligations hereunder.

     6.   Your duties hereunder may be altered, amended, modified or revoked
only by a writing signed by all of the parties hereto.

     7.   You shall be obligated only for the performance of such duties as are
specifically set forth herein and may rely and shall be protected in relying or
refraining from acting on any instrument reasonably believed by you to be
genuine and to have been signed or presented by the proper party or parties.
You shall not be personally liable for any act you may do or omit to do
hereunder as Escrow Agent or as attorney-in-fact for Participant while acting in
good faith, and any act done or omitted by you pursuant to the advice of your
own attorneys shall be conclusive evidence of such good faith.

     8.   You are hereby expressly authorized to disregard any and all warnings
given by any of the parties hereto or by any other person or corporation,
excepting only orders or process of courts of law, and are hereby expressly
authorized to comply with and obey orders, judgments or decrees of any court.
In case you obey or comply with any such order, judgment or decree, you shall
not be liable to any of the parties hereto or to any other person, firm or
corporation by reason of such compliance, notwithstanding any such order,
judgment or decree being subsequently reversed, modified, annulled, set aside,
vacated or found to have been entered without jurisdiction.

     9.   You shall not be liable in any respect on account of the identity,
authorities or rights of the parties executing or delivering or purporting to
execute or deliver the Agreement or any documents or papers deposited or called
for hereunder.

     10.  You shall not be liable for the outlawing of any rights under the
statute of limitations with respect to these Joint Escrow Instructions or any
documents deposited with you.

     11.  You shall be entitled to employ such legal counsel and other experts
as you may deem necessary properly to advise you in connection with your
obligations hereunder, may rely upon the advice of such counsel, and may pay
such counsel reasonable compensation therefor.

     12.  Your responsibilities as Escrow Agent hereunder shall terminate if you
shall cease to be an officer or agent of the Company or if you shall resign by
written notice to each party.  In the event of any such termination, the Company
shall appoint a successor Escrow Agent.

     13.  If you reasonably require other or further instruments in connection
with these Joint Escrow Instructions or obligations in respect hereto, the
necessary parties hereto shall join in furnishing such instruments.

                                      -2-
<PAGE>

     14.  It is understood and agreed that should any dispute arise with respect
to the delivery and/or ownership or right of possession of the securities held
by you hereunder, you are authorized and directed to retain in your possession
without liability to anyone all or any part of said securities until such
disputes shall have been settled either by mutual written agreement of the
parties concerned or by a final order, decree or judgment of a court of
competent jurisdiction after the time for appeal has expired and no appeal has
been perfected, but you shall be under no duty whatsoever to institute or defend
any such proceedings.

     15.  Any notice required or permitted hereunder shall be given in writing
and shall be deemed effectively given upon personal delivery or upon deposit in
the United States Post Office, by registered or certified mail with postage and
fees prepaid, addressed to each of the other parties thereunto entitled at the
following addresses or at such other addresses as a party may designate by ten
days' advance written notice to each of the other parties hereto.

     COMPANY:                           Exponent, Inc.
                                          [Address]

     PARTICIPANT:                  _______________________

                                   _______________________

                                   _______________________



     ESCROW AGENT:                 Corporate Secretary
                                   Exponent, Inc.
                                   [Address]

     17.  By signing these Joint Escrow Instructions, you become a party hereto
only for the purpose of said Joint Escrow Instructions; you do not become a
party to the Agreement.

                                      -3-
<PAGE>

     18.  This instrument shall be binding upon and inure to the benefit of the
parties hereto, and their respective successors and permitted assigns.

     19.  These Joint Escrow Instructions shall be governed by, and construed
and enforced in accordance with, the internal substantive laws, but not the
choice of law rules, of California.

                                         Very truly yours,

                                         EXPONENT, INC.

                                         _____________________________________
                                         By

                                         _____________________________________
                                         Title

                                         PARTICIPANT:

                                         _____________________________________
                                         Signature

                                         _____________________________________
                                         Print Name

ESCROW AGENT:

_____________________________________
Corporate Secretary

                                      -4-
<PAGE>

                                  EXHIBIT A-4
                                  -----------

                               CONSENT OF SPOUSE
                               -----------------

     I, ____________________, spouse of ___________________, have read and
approve the foregoing Restricted Stock Award Agreement (the "Agreement").  In
consideration of the Company's grant to my spouse of the right to acquire shares
of Exponent, Inc., as set forth in the Agreement, I hereby appoint my spouse as
my attorney-in-fact in respect to the exercise of any rights under the Agreement
and agree to be bound by the provisions of the Agreement insofar as I may have
any rights in said Agreement or any shares issued pursuant thereto under the
community property laws or similar laws relating to marital property in effect
in the state of our residence as of the date of the signing of the foregoing
Agreement.

Dated: _______________, 19__

                                        _______________________________________
                                        Signature of Spouse
<PAGE>

                                  EXHIBIT A-5
                                  -----------

                         ELECTION UNDER SECTION 83(b)
                         ----------------------------
                     OF THE INTERNAL REVENUE CODE OF 1986
                     ------------------------------------

The undersigned taxpayer hereby elects, pursuant to Section 83(b) of the
Internal Revenue Code of 1986, as amended, to include in taxpayer's gross income
for the current taxable year the amount of any compensation taxable to taxpayer
in connection with his or her receipt of the property described below:

1.   The name, address, taxpayer identification number and taxable year of the
     undersigned are as follows:

     NAME:                  TAXPAYER:                 SPOUSE:

     ADDRESS:

     IDENTIFICATION NO.:    TAXPAYER:                 SPOUSE:

     TAXABLE YEAR:

2.   The property with respect to which the election is made is described as
     follows: _____ shares (the "Shares") of the Common Stock of Exponent, Inc.
     (the "Company").

3.   The date on which the property was transferred is: ____________, 19__.

4.   The property is subject to the following restrictions:

     The Shares may be reacquired by the Company, or its assignee, upon certain
     events. This right lapses with regard to a portion of the Shares based on
     the continued performance of services by the taxpayer over time.

5.   The fair market value at the time of transfer, determined without regard to
     any restriction other than a restriction which by its terms will never
     lapse, of such property is:

     $_______________.

6.   The amount (if any) paid for such property is:

     $0.00            .
     ------------------

The undersigned has submitted a copy of this statement to the person for whom
the services were performed in connection with the undersigned's receipt of the
above-described property.  The transferee of such property is the person
performing the services in connection with the transfer of said property.

The undersigned understands that the foregoing election may not be revoked
- --------------------------------------------------------------------------
except with the consent of the Commissioner.
- -------------------------------------------

Dated: _________, 19__                  _____________________________________
                                        Taxpayer

The undersigned spouse of taxpayer joins in this election.

Dated: ________, 19__                   _____________________________________
                                        Spouse of Taxpayer



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