ULTRATECH STEPPER INC
S-8, 2000-03-27
SPECIAL INDUSTRY MACHINERY, NEC
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<PAGE>   1
          As filed with the Securities and Exchange Commission on March 27, 2000
                                                 Registration No. 333-__________
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  -----------

                                    FORM S-8
                             REGISTRATION STATEMENT
                                      Under
                           The Securities Act of 1933

                                  -----------

                             ULTRATECH STEPPER, INC.
             (Exact name of registrant as specified in its charter)

                DELAWARE                                 94-3169580
    (State or other jurisdiction               (IRS Employer Identification No.)
 of incorporation or organization)

                  3050 ZANKER ROAD, SAN JOSE, CALIFORNIA 95134
               (Address of principal executive offices) (Zip Code)

                             ULTRATECH STEPPER, INC.
                      1993 STOCK OPTION/STOCK ISSUANCE PLAN
                            (Full title of the Plan)

                                  -----------

                              ARTHUR W. ZAFIROPOULO
                CHAIRMAN OF THE BOARD AND CHIEF EXECUTIVE OFFICER
                             ULTRATECH STEPPER, INC.
                  3050 ZANKER ROAD, SAN JOSE, CALIFORNIA 95134
                     (Name and address of agent for service)

                                 (408) 321-8835
          (Telephone number, including area code, of agent for service)

                                  -----------

<TABLE>
<CAPTION>

                                    CALCULATION OF REGISTRATION FEE
===============================================================================================================
                                                                Proposed           Proposed
               Title of                                         Maximum            Maximum
              Securities                      Amount            Offering           Aggregate          Amount of
                 to be                         to be              Price            Offering         Registration
              Registered                    Registered(1)      per Share(2)        Price(2)              Fee
              ----------                   --------------      ------------        --------              ---

<S>                                        <C>                 <C>                 <C>              <C>
1993 Stock Option/Stock Issuance Plan      299,490 shares       $15.82             $4,737,931.80    $1,250.81
Common Stock, $0.001 par value
===============================================================================================================
</TABLE>

(1)    This Registration Statement shall also cover any additional shares of
       Common Stock which become issuable under the Ultratech Stepper, Inc. 1993
       Stock Option/Stock Issuance Plan by reason of any stock dividend, stock
       split, recapitalization or other similar transaction effected without the
       Registrant's receipt of consideration which results in an increase in the
       number of the outstanding shares of Registrant's Common Stock.

(2)    Calculated solely for purposes of this offering under Rule 457(h) of the
       Securities Act of 1933, as amended, (the "1933 Act"), on the basis of the
       average of the high and low selling prices per share of Registrant's
       Common Stock on March 22, 2000 as reported by the Nasdaq National Market.
================================================================================



<PAGE>   2

                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT


Item 3. Incorporation of Documents by Reference

               Ultratech Stepper, Inc. (the "Registrant") hereby incorporates by
reference into this Registration Statement the following documents previously
filed with the Securities and Exchange Commission (the "Commission"):

               (a)    The Registrant's Annual Report on Form 10-K for the fiscal
                      year ended December 31, 1999, filed with the Commission on
                      March 27, 2000, pursuant to Section 13 of the Securities
                      Exchange Act of 1934, as amended (the "1934 Act");

               (b)    The Registrant's Registration Statement No. 0-22248 on
                      Form 8-A, filed with the Commission on August 13, 1993 and
                      subsequently amended on February 27, 1997, pursuant to
                      Section 12 of the Securities and Exchange Act of 1934, as
                      amended (the "1934 Act"), in which there is described the
                      terms, rights and provisions applicable to the
                      Registrant's outstanding Common Stock.

               All reports and definitive proxy or information statements filed
pursuant to Section 13(a), 13(c), 14 or 15(d) of the 1934 Act after the date of
this Registration Statement and 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 into this Registration Statement and to be a part
hereof from the date of filing of such documents. Any statement contained in a
document incorporated or deemed to be incorporated by reference herein shall be
deemed to be modified or superseded for purposes of this Registration Statement
to the extent that a statement contained in any subsequently filed document
which also is deemed to be incorporated by reference herein 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 part of this
Registration Statement.

Item 4. Description of Securities

               Not applicable.

Item 5. Interests of Named Experts and Counsel

               Not applicable.

Item 6. Indemnification of Directors and Officers

               The Registrant's Amended and Restated Certificate of
Incorporation limits the liability of directors to the maximum extent permitted
by the Delaware General Corporation Law ("Delaware Law"). Delaware Law provides
that directors of a corporation will not be personally liable for monetary
damages for breach of their fiduciary duties as directors, except for liability
for (i) any breach of their duty of loyalty to the corporation or its
stockholders, (ii) acts or omissions not in good faith or that involve
intentional misconduct or a knowing violation of law, (iii) unlawful payments of
dividends or unlawful stock repurchases or redemptions as provided in Section
174 of the Delaware General Corporation Law or (iv) any transaction from which
the director derives an improper personal benefit.

                                      II-1

<PAGE>   3




               The Registrant's Bylaws provide that the Registrant shall
indemnify its directors and may indemnify its officers, employees and other
agents to the fullest extent permitted by law. The Registrant believes that
indemnification under its Bylaws covers at least negligence and gross negligence
on the part of an indemnified party in connection with the defense of any action
or proceeding arising out of such party's status or service as a director,
officer, employee or other agent of the Registrant upon an undertaking by such
party to repay such advances if it is ultimately determined that such party is
not entitled to indemnification.

               The Registrant has entered into separate indemnification
agreements with each of its directors and officers. These agreements require the
Registrant, among other things, to indemnify such director or officer against
certain expenses (including attorneys' fees), judgments, fines and settlement
amounts paid by such individual in connection with any action, suit or
proceeding arising out of such individual's status or service as a director or
officer of the Registrant (other than expenses arising from willful misconduct
or conduct that is knowingly fraudulent or deliberately dishonest) and to
advance expenses incurred by such individual in connection with any proceeding
against such individual with respect to which such individual may be entitled to
indemnification by the Registrant. The Registrant believes that its Certificate
of Incorporation and Bylaw provisions and indemnification agreements are
necessary to attract and retain qualified persons as directors and officers.

Item 7. Exemption from Registration Claimed

               Not applicable.

Item 8. Exhibits

<TABLE>
<CAPTION>
 Exhibit Number    Exhibit
 --------------    -------
 <S>               <C>
       4           Instruments Defining Rights of Shareholders.  Reference is
                   made to Registrant's Registration Statement No. 0-22248 on
                   Form 8-A which is
                   incorporated herein by reference pursuant to Item 3(b).
       5           Opinion and Consent of Brobeck, Phleger & Harrison LLP.
       23.1        Consent of Ernst & Young LLP, Independent Auditors.
       23.2        Consent of Brobeck, Phleger & Harrison LLP is contained in
                   Exhibit 5.
       24          Power of Attorney.  Reference is made to page II-4 of this
                   Registration Statement.
       99.1        Ultratech Stepper, Inc. 1993 Stock Option/Stock Issuance Plan
                   (Amended and Restated as of January 3, 2000).
</TABLE>

Item 9. Undertakings

               A. 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 1933 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, and (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 clauses (1)(i) and (1)(ii) shall not apply if
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 1934 Act that are incorporated by reference
into the Registration Statement; (2) that for the purpose of determining any
liability under the 1933 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; and (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 Registrant's 1993 Stock Option/Stock
Issuance Plan.

               B. The undersigned Registrant hereby undertakes that, for
purposes of determining any liability under the 1933 Act, each filing of the
Registrant's annual report pursuant to Section 13(a) or Section 15(d) of the
1934 Act that is incorporated by reference into the Registration Statement shall
be deemed to be a new

                                      II-2
<PAGE>   4

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. Insofar as indemnification for liabilities arising under the
1933 Act may be permitted to directors, officers or controlling persons of the
Registrant pursuant to the indemnification provisions summarized in Item 6 above
or otherwise, the Registrant has been informed that, in the opinion of the
Commission, such indemnification is against public policy as expressed in the
1933 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 1933 Act and
will be governed by the final adjudication of such issue.



                                      II-3
<PAGE>   5



                                   SIGNATURES

               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 to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of San Jose, State of California, on this 27th day
of March, 2000.


                                        ULTRATECH STEPPER, INC.


                                        By: /s/ ARTHUR W. ZAFIROPOULO
                                           -------------------------------------
                                           Arthur W. Zafiropoulo
                                           Chairman of the Board and
                                           Chief Executive Officer


                                POWER OF ATTORNEY

KNOW ALL MEN BY THESE PRESENTS:

               That the undersigned officers and directors of Ultratech Stepper,
Inc., a Delaware corporation, do hereby constitute and appoint Arthur W.
Zafiropoulo and Bruce R. Wright, and each of them, the lawful attorneys and
agents, with full power and authority to do any and all acts and things and to
execute any and all instruments which said attorneys and agents, and any one of
them, determine may be necessary or advisable or required to enable said
corporation to comply with the Securities Act of 1933, as amended, and any rules
or regulations or requirements of the Securities and Exchange Commission in
connection with this Registration Statement. Without limiting the generality of
the foregoing power and authority, the powers granted include the power and
authority to sign the names of the undersigned officers and directors in the
capacities indicated below to this Registration Statement, to any and all
amendments, both pre-effective and post-effective, and supplements to this
Registration Statement, and to any and all instruments or documents filed as
part of or in conjunction with this Registration Statement or amendments or
supplements thereof, and each of the undersigned hereby ratifies and confirms
all that said attorneys and agents, or any of them, shall do or cause to be done
by virtue hereof. This Power of Attorney may be signed in several counterparts.

               IN WITNESS WHEREOF, each of the undersigned has executed this
Power of Attorney as of the date indicated.

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

<TABLE>
<CAPTION>

SIGNATURES                              TITLE                                         DATE
- ------------------------------------    -----------------------------------    --------------------

<S>                                     <C>                                    <C>
/s/ Arthur W. Zafiropoulo               Chairman of the Board and Chief        March 27, 2000
- -----------------------------------     Executive Officer (Principal
Arthur W. Zafiropoulo                   Executive Officer)




/s/ BRUCE R. WRIGHT                     Senior Vice President, Finance,        March 27, 2000
- -----------------------------------     Chief Financial Officer, Secretary
Bruce R. Wright                         and Treasurer (Principal Financial
                                        and Accounting Officer)

</TABLE>



                                      II-4
<PAGE>   6

<TABLE>
<CAPTION>

SIGNATURES                              TITLE                                         DATE
- ------------------------------------    -----------------------------------    --------------------

<S>                                     <C>                                    <C>

/s/ GREGORY HARRISON                    Director                               March 27, 2000
- --------------------------------------
Gregory Harrison



/s/ KENNETH LEVY                        Director                               March 27, 2000
- --------------------------------------
Kenneth Levy


/s/ LARRY R. CARTER                     Director                               March 27, 2000
- --------------------------------------
Larry R. Carter


/s/ JOEL F. GEMUNDER                    Director                               March 27, 2000
- --------------------------------------
Joel F. Gemunder


                                        Director
- --------------------------------------
Tommy George
</TABLE>


                                      II-5
<PAGE>   7


                       SECURITIES AND EXCHANGE COMMISSION
                                WASHINGTON, D.C.


                                    EXHIBITS

                                       TO

                                    FORM S-8

                                      UNDER

                             SECURITIES ACT OF 1933


                             ULTRATECH STEPPER, INC.


<PAGE>   8



                                  EXHIBIT INDEX

<TABLE>
<CAPTION>
Exhibit Number    Exhibit
- --------------    -------
<S>               <C>
     4            Instruments Defining Rights of Shareholders.  Reference is
                  made to Registrant's Registration Statement No. 0-22248 on
                  Form 8-A which is incorporated herein by reference pursuant
                  to Item 3(b).
     5            Opinion and Consent of Brobeck, Phleger & Harrison LLP.
     23.1         Consent of Ernst & Young LLP, Independent Auditors.
     23.2         Consent of Brobeck, Phleger & Harrison LLP is contained in
                  Exhibit 5.
     24           Power of Attorney.  Reference is made to page II-4 of this
                  Registration Statement.
     99.1         Ultratech Stepper, Inc. 1993 Stock Option/Stock Issuance Plan
                  (Amended and Restated as of January 3, 2000).
</TABLE>


<PAGE>   1




                                       EXHIBIT 5

                Opinion and Consent of Brobeck, Phleger & Harrison LLP



                                 March 27, 2000



Ultratech Stepper, Inc.
3050 Zanker Road
San Jose, California 95134

        Re:    Ultratech Stepper, Inc. - Registration Statement for
               Registration of 299,490 Shares of Common Stock


Ladies and Gentlemen:

               We have acted as counsel to Ultratech Stepper, Inc., a Delaware
corporation (the "Company"), in connection with the registration on Form S-8
(the "Registration Statement") under the Securities Act of 1933, as amended, of
299,490 shares of the Company's common stock reserved for issuance (the
"Shares") under the Company's 1993 Stock Option/Stock Issuance Plan (the "Option
Plan").

               This opinion is being furnished in accordance with the
requirements of Item 8 of Form S-8 and Item 601(b)(5)(i) of Regulation S-K.

               We have reviewed the Company's charter documents and the
corporate proceedings taken by the Company in connection with the establishment
and amendment of the Option Plan. Based on such review, we are of the opinion
that if, as and when the Shares are issued and sold (and the consideration
therefor received) pursuant to (a) the provisions of option agreements duly
authorized under the Option Plan, and in accordance with the Registration
Statement or (b) duly authorized direct stock issuances in accordance with the
provisions of the Option Plan and the Registration Statement, such Shares will
be duly authorized, legally issued, fully paid and non-assessable.

               We consent to the filing of this opinion letter as Exhibit 5 to
the Registration Statement.

               This opinion letter is rendered as of the date first written
above and we disclaim any obligation to advise you of facts, circumstances,
events or developments which hereafter may be brought to our attention and which
may alter, affect or modify the opinion expressed herein. Our opinion is
expressly limited to the matters set forth above, and we render no opinion,
whether by implication or otherwise, as to any other matters relating to the
Company, the Option Plan or the Shares.



                                            Very truly yours,

                                            /s/ BROBECK, PHLEGER & HARRISON LLP

                                            Brobeck, Phleger & Harrison LLP

<PAGE>   1

                                     EXHIBIT 23.1

                  Consent of Ernst & Young LLP, Independent Auditors


We consent to the incorporation by reference in the Registration Statement on
Form S-8 pertaining to the 1993 Stock Option/Stock Issuance Plan of Ultratech
Stepper, Inc of our report dated January 25, 2000, with respect to the
consolidated financial statements of Ultratech Stepper, Inc. incorporated by
reference in its Annual Report on Form 10-K for the year ended December 31,
1999, and the related financial statement schedule included therein, filed with
the Securities and Exchange Commission.


                                             /s/ Ernst & Young LLP


San Jose, California
March 23, 2000

<PAGE>   1




                                  EXHIBIT 99.1

                      1993 Stock Option/Stock Issuance Plan

<PAGE>   2

                            ULTRATECH STEPPER, INC.
                      1993 STOCK OPTION/STOCK ISSUANCE PLAN

                  (Amended and Restated as of January 4, 1999)



                                   ARTICLE ONE

                                     GENERAL

        I. PURPOSE OF THE PLAN

               This 1993 Stock Option/Stock Issuance Plan ("Plan") is intended
to promote the interests of Ultratech Stepper, Inc., a Delaware corporation (the
"Corporation"), by providing (i) key employees (including officers) of the
Corporation (or its parent or subsidiary corporations) who are responsible for
the management, growth and financial success of the Corporation (or its parent
or subsidiary corporations), (ii) the non-employee members of the Corporation's
Board of Directors and (iii) independent consultants and other advisors who
provide valuable services to the Corporation (or its parent or subsidiary
corporations) with the opportunity to acquire a proprietary interest, or
otherwise increase their proprietary interest, in the Corporation as an
incentive for them to remain in the service of the Corporation (or its parent or
subsidiary corporations).

               A. The Plan became effective on September 29, 1993, the date on
which the shares of the Corporation's Common Stock were registered under Section
12(g) of the Securities Exchange Act of 1934, as amended (the "1934 Act"). Such
date is hereby designated as the Effective Date for the Plan.

               B. This Plan shall serve as the successor to the Corporation's
existing 1993 Stock Option and 1993 Stock Issuance Plans (the "Predecessor
Plans"), and no further option grants or share issuances shall be made under the
Predecessor Plans from and after the Effective Date of this Plan. All
outstanding stock options and unvested share issuances under the Predecessor
Plans on the Effective Date are hereby incorporated into this Plan and shall
accordingly be treated as outstanding stock options and unvested share issuances
under this Plan. However, each outstanding option grant and unvested share
issuance so incorporated shall continue to be governed solely by the express
terms and conditions of the instrument evidencing such grant or issuance, and no
provision of this Plan shall be deemed to affect or otherwise modify the rights
or obligations of the holders of such incorporated options with respect to their
acquisition of shares of Common Stock thereunder. All unvested shares of Common
Stock outstanding under the Predecessor Plans on the Effective Date shall
continue to be governed solely by the express terms and conditions of the
instruments evidencing such issuances, and no provision of this Plan shall be
deemed to affect or modify the rights or obligations of the holders of such
unvested shares.

<PAGE>   3




        II.    DEFINITIONS

               A. For purposes of the Plan, the following definitions shall be
in effect:

               BOARD: the Corporation's Board of Directors.

               CODE: the Internal Revenue Code of 1986, as amended.

               COMMITTEE: the committee of two (2) or more non-employee Board
members appointed by the Board to administer the Plan.

               COMMON STOCK:  shares of the Corporation's common stock.

               CHANGE IN CONTROL: a change in ownership or control of the
Corporation effected through either of the following transactions:

                      a. any person or related group of persons (other than the
Corporation or a person that directly or indirectly controls, is controlled by,
or is under common control with, the Corporation) directly or indirectly
acquires beneficial ownership (within the meaning of Rule 13d-3 of the 1934 Act)
of securities possessing more than fifty percent (50%) of the total combined
voting power of the Corporation's outstanding securities pursuant to a tender or
exchange offer made directly to the Corporation's stockholders; or

                      b. there is a change in the composition of the Board over
a period of thirty-six (36) consecutive months or less such that a majority of
the Board members ceases, by reason of one or more proxy contests for the
election of Board members, to be comprised of individuals who either (A) have
been Board members continuously since the beginning of such period or (B) have
been elected or nominated for election as Board members during such period by at
least a majority of the Board members described in clause (A) who were still in
office at the time such election or nomination was approved by the Board.

               CORPORATE TRANSACTION: any of the following stockholder-approved
transactions to which the
Corporation is a party:

                      a. a merger or consolidation in which the Corporation is
not the surviving entity, except for a transaction the principal purpose of
which is to change the State in which the Corporation is incorporated,

                      b. the sale, transfer or other disposition of all or
substantially all of the assets of the Corporation in complete liquidation or
dissolution of the Corporation, or

                      c. any reverse merger in which the Corporation is the
surviving entity but in which securities possessing more than fifty percent
(50%) of the total combined voting power of the Corporation's outstanding
securities are transferred to person or persons different from the persons
holding those securities immediately prior to such merger.


                                       2.
<PAGE>   4

               EMPLOYEE: an individual who performs services while in the employ
of the Corporation or one or more parent or subsidiary corporations, subject to
the control and direction of the employer entity not only as to the work to be
performed but also as to the manner and method of performance.

               FAIR MARKET VALUE: the Fair Market Value per share of Common
Stock determined in accordance with the following provisions:

                      a. If the Common Stock is not at the time listed or
admitted to trading on any national stock exchange but is traded on the Nasdaq
National Market, the Fair Market Value shall be the closing selling price per
share on the date in question, as such price is reported by the National
Association of Securities Dealers on the Nasdaq National Market or any successor
system. If there is no reported closing selling price for the Common Stock on
the date in question, then the closing selling price on the last preceding date
for which such quotation exists shall be determinative of Fair Market Value.

                      b. If the Common Stock is at the time listed or admitted
to trading on any national stock exchange, then the Fair Market Value shall be
the closing selling price per share on the date in question on the exchange
determined by the Plan Administrator to be the primary market for the Common
Stock, as such price is officially quoted in the composite tape of transactions
on such exchange. If there is no reported sale of Common Stock on such exchange
on the date in question, then the Fair Market Value shall be the closing selling
price on the exchange on the last preceding date for which such quotation
exists.

               HOSTILE TAKE-OVER: the acquisition, directly or indirectly, by
any person or related group of persons (other than the Corporation or a person
that directly or indirectly controls, is controlled by, or is under common
control with, the Corporation) of beneficial ownership (within the meaning of
Rule 13d-3 of the 1934 Act) of securities possessing more than fifty percent
(50%) of the total combined voting power of the Corporation's outstanding
securities pursuant to a tender or exchange offer made directly to the
Corporation's stockholders which the Board does not recommend such stockholders
to accept.

               OPTIONEE: any person to whom an option is granted under the
Discretionary Option Grant or Automatic Option Grant Program in effect under the
Plan.

               PARTICIPANT: any person who receives a direct issuance of Common
Stock under the Stock Issuance Program in effect under the Plan.

               PLAN ADMINISTRATOR: the Committee in its capacity as the
administrator of the Plan.

               PERMANENT DISABILITY or PERMANENTLY DISABLED: the inability of
the Optionee or the Participant to engage in any substantial gainful activity by
reason of any medically determinable physical or mental impairment expected to
result in death or to be of continuous duration of twelve (12) months or more.


                                       3.
<PAGE>   5




               SERVICE: the performance of services on a periodic basis to the
Corporation (or any parent or subsidiary corporation) in the capacity of an
Employee, a non--employee member of the board of directors or an independent
consultant or advisor, except to the extent otherwise specifically provided in
the applicable stock option or stock issuance agreement.

               TAKE-OVER PRICE: the greater of (a) the Fair Market Value per
share of Common Stock on the date the option is surrendered to the Corporation
in connection with a Hostile Take-Over or (b) the highest reported price per
share of Common Stock paid by the tender offeror in effecting such Hostile
Take-Over. However, if the surrendered option is an Incentive Option, the
Take-Over Price shall not exceed the clause (a) price per share.

               B. The following provisions shall be applicable in determining
the parent and subsidiary corporations of the Corporation:

               Any corporation (other than the Corporation) in an unbroken chain
of corporations ending with the Corporation shall be considered to be a PARENT
of the Corporation, provided each such corporation in the unbroken chain (other
than the Corporation) owns, at the time of the determination, stock possessing
fifty percent (50%) or more of the total combined voting power of all classes of
stock in one of the other corporations in such chain.

               Each corporation (other than the Corporation) in an unbroken
chain of corporations which begins with the Corporation shall be considered to
be a SUBSIDIARY of the Corporation, provided each such corporation (other than
the last corporation) in the unbroken chain owns, at the time of the
determination, stock possessing fifty percent (50%) or more of the total
combined voting power of all classes of stock in one of the other corporations
in such chain.

        III.   STRUCTURE OF THE PLAN

               A. Stock Programs. The Plan shall be divided into three separate
components: the Discretionary Option Grant Program specified in Article Two, the
Automatic Option Grant Program specified in Article Three and the Stock Issuance
Program specified in Article Four. Under the Discretionary Option Grant Program,
eligible individuals may, at the discretion of the Plan Administrator, be
granted options to purchase shares of Common Stock in accordance with the
provisions of Article Two. Under the Automatic Option Grant Program,
non-employee Board members will receive a series of automatic option grants over
their period of continued Board service to purchase shares of Common Stock in
accordance with the provisions of Article Three. Under the Stock Issuance
Program, eligible individuals may be issued shares of Common Stock directly,
either through the immediate purchase of such shares at Fair Market Value at the
time of issuance or as a bonus tied to the performance of services or the
Corporation's attainment of financial objectives, without any cash payment
required of the recipient.

               B. General Provisions. Unless the context clearly indicates
otherwise, the provisions of Articles One and Five shall apply to the
Discretionary Option Grant Program, the Automatic Option Grant Program and the
Stock Issuance Program and shall accordingly govern the interests of all
individuals under the Plan.



                                       4.
<PAGE>   6



        IV.    ADMINISTRATION OF THE PLAN

               A. Both the Discretionary Option Grant Program and the Stock
Issuance Program shall be administered by a committee ("Committee") of two or
more non-employee Board members. Members of the Committee shall serve for such
period of time as the Board may determine and shall be subject to removal by the
Board at any time.

               B. The Committee as Plan Administrator shall have full power and
authority (subject to the express provisions of the Plan) to establish rules and
regulations for the proper administration of the Discretionary Option Grant and
Stock Issuance Programs and to make such determinations under, and issue such
interpretations of, the provisions of such programs and any outstanding option
grants or stock issuances thereunder as it may deem necessary or advisable.
Decisions of the Plan Administrator shall be final and binding on all parties
who have an interest in the Discretionary Option Grant or Stock Issuance Program
or any outstanding option or share issuance thereunder.

               C. Administration of the Automatic Option Grant Program shall be
self-executing in accordance with the express terms and conditions of Article
Three, and the Committee as Plan Administrator shall exercise no discretionary
functions with respect to option grants made pursuant to that program.

        V.     OPTION GRANTS AND STOCK ISSUANCES

               A. The persons eligible to participate in the Discretionary
Option Grant Program under Article Two or the Stock Issuance Program under
Article Four shall be limited to the following:

                      1. officers and other key employees of the Corporation
(or its parent or subsidiary corporations) who render services which contribute
to the management, growth and financial success of the Corporation (or its
parent or subsidiary corporations);

                      2. non-employee members of the Board; and

                      3. those independent consultants or other advisors who
provide valuable services to the Corporation (or its parent or subsidiary
corporations).

               B. The Plan Administrator shall have full authority to determine,
(I) with respect to the option grants made under the Discretionary Option Grant
Program, which eligible individuals are to receive option grants, the time or
time when such grants are to be made, the number of shares to be covered by each
such grant, the status of the granted option as either an incentive stock option
("Incentive Option") which satisfies the requirements of Section 422 of the Code
or a non-statutory option not intended to meet such requirements, the time or
times at which each granted option is to become exercisable and the maximum term
for which the option may remain outstanding and (II), with respect to stock
issuances under the Stock Issuance Program, the number of shares to be issued to
each Participant, the vesting schedule (if any) to be applicable to the issued
shares, and the consideration to be paid by the individual for such shares.



                                       5.
<PAGE>   7



        VI.    STOCK SUBJECT TO THE PLAN

               A. Shares of Common Stock shall be available for issuance under
the Plan and shall be drawn from either the Corporation's authorized but
unissued shares of Common Stock or from reacquired shares of Common Stock,
including shares repurchased by the Corporation on the open market. The maximum
number of shares of Common Stock reserved for issuance over the term of the Plan
shall be limited to 5,826,739 shares(1). Such share reserve includes (i) the
initial number of shares incorporated into this Plan from the Predecessor Plans
on the Effective Date, (ii) an additional 600,000-share increase authorized by
the Board on March 21, 1996 and approved by the stockholders at the 1996 Annual
Stockholders Meeting, (iii) an additional 277,239 shares attributable to the
automatic annual share increase for fiscal 1996 which was effected on January 2,
1996, (iv) an additional 284,346 shares attributable to the automatic annual
share increase for fiscal 1997 which was effected on January 2, 1997, (v) an
additional 450,000 shares authorized by the Board on March 18, 1997 and approved
by the stockholders at the 1997 Annual Meeting, (vi) an additional 291,008
shares attributable to the automatic annual share increase for fiscal 1998 which
was effected on January 2, 1998 and (vii) an additional 295,480 shares
attributable to the automatic annual share increase for fiscal 1999 which was
effected on January 4, 1999. Such share reserve shall automatically increase on
the first trading day in fiscal year 2000 by an amount equal to 1.4% of the
total number of shares of Common Stock outstanding on the last trading day of
December in the immediately preceding fiscal year. The share reserve in effect
from time to time under the Plan shall be subject to periodic adjustment in
accordance with the provisions of this Section VI. To the extent one or more
outstanding options under the Predecessor Plans which have been incorporated
into this Plan are subsequently exercised, the number of shares issued with
respect to each such option shall reduce, on a share-for-share basis, the number
of shares available for issuance under this Plan.

               B. In no event may the aggregate number of shares of Common Stock
for which any one individual participating in the Plan may be granted stock
options, separately-exercisable stock appreciation rights and direct stock
issuances exceed 400,000 shares per fiscal year, beginning with the 1995 fiscal
year. However, for the fiscal year in which an individual receives his or her
initial stock option grant or direct stock issuance under the Plan, the limit
shall be increased to 600,000 shares. Such limitations shall be subject to
adjustment from time to time in accordance with the provisions of this Section
VI.

               C. Should one or more outstanding options under this Plan
(including outstanding options under the Predecessor Plans incorporated into
this Plan) expire or terminate for any reason prior to exercise in full
(including any option cancelled in accordance with the cancellation-regrant
provisions of Section IV of Article Two of the Plan), then the shares subject to
the portion of each option not so exercised shall be available for subsequent
issuance under the Plan. Unvested shares issued under the Plan and subsequently
repurchased by the Corporation, at the original exercise or issue price paid per
share, pursuant to the Corporation's repurchase rights under the Plan shall be
added back to the number of shares of Common Stock reserved for issuance under
the Plan and shall accordingly be available for reissuance through one or more

- --------
     (1) All figures have been adjusted to reflect the 2:1 stock split the
Corporation effected May 10, 1995.



                                       6.
<PAGE>   8



subsequent option grants or direct stock issuances under the Plan. Shares
subject to any option or portion thereof surrendered or cancelled in accordance
with Section V of Article Two shall reduce on a share-for-share basis the number
of shares of Common Stock available for subsequent issuance under the Plan. In
addition, should the exercise price of an outstanding option under the Plan
(including any option incorporated from the Predecessor Plans) be paid with
shares of Common Stock or should shares of Common Stock otherwise issuable under
the Plan be withheld by the Corporation in satisfaction of the withholding taxes
incurred in connection with the exercise of an outstanding option under the Plan
or the vesting of a direct share issuance made under the Plan, then the number
of shares of Common Stock available for issuance under the Plan shall be reduced
by the gross number of shares for which the option is exercised or which vest
under the share issuance, and not by the net number of shares of Common Stock
actually issued to the holder of such option or share issuance.

               D. Should any change be made to the Common Stock issuable under
the Plan by reason of any stock split, stock dividend, recapitalization,
combination of shares, exchange of shares or other change affecting the
outstanding Common Stock as a class without the Corporation's receipt of
consideration, then appropriate adjustments shall be made to (i) the maximum
number and/or class of securities issuable under the Plan, (ii) the maximum
number and/or class of securities for which any one person may be granted stock
options, separately exercisable stock appreciations rights and direct stock
issuances under this Plan per calendar year, (iii) the number and/or class of
securities for which automatic option grants are to be subsequently made per
eligible non-employee Board member under the Automatic Option Grant Program,
(iv) the number and/or class of securities and price per share in effect under
each option outstanding under either the Discretionary Option Grant or Automatic
Option Grant Program and (v) the number and/or class of securities and price per
share in effect under each outstanding option incorporated into this Plan from
the Predecessor Plans. Such adjustments to the outstanding options are to be
effected in a manner which shall preclude the enlargement or dilution of rights
and benefits under such options. The adjustments deter-mined by the Plan
Administrator shall be final, binding and conclusive.


                                       7.
<PAGE>   9


                                   ARTICLE TWO

                       DISCRETIONARY OPTION GRANT PROGRAM

        I.     TERMS AND CONDITIONS OF OPTIONS

               Options granted pursuant to the Discretionary Option Grant
Program shall be authorized by action of the Plan Administrator and may, at the
Plan Administrator's discretion, be either Incentive Options or non-statutory
options. Individuals who are not Employees of the Corporation or its parent or
subsidiary corporations may only be granted non-statutory options. Each granted
option shall be evidenced by one or more instruments in the form approved by the
Plan Administrator; provided, however, that each such instrument shall comply
with the terms and conditions specified below. Each instrument evidencing an
Incentive Option shall, in addition, be subject to the applicable provisions of
Section II of this Article Two.

               A. Option Price.

                      1. The option price per share shall be fixed by the Plan
Administrator and shall in no event be less than one hundred percent (100%) of
the fair market value of such Common Stock on the grant date.

                      2. The option price shall become immediately due upon
exercise of the option and, subject to the provisions of Section I of Article
Four and the instrument evidencing the grant, shall be payable in one of the
following alternative forms specified below:

                         - full payment in cash or check drawn to the
     Corporation's order; or

                         - full payment in shares of Common Stock held for the
     requisite period necessary to avoid a charge to the Corporation's earnings
     for financial reporting purposes and valued at Fair Market Value on the
     Exercise Date (as such term is defined below); or

                         - full payment in a combination of shares of Common
     Stock held for the requisite period necessary to avoid a charge to the
     Corporation's earnings for financial reporting purposes and valued at Fair
     Market Value on the Exercise Date and cash or check drawn to the
     Corporation's order; or

                         - full payment through a broker-dealer sale and
     remittance procedure pursuant to which the Optionee (I) shall provide
     irrevocable written instructions to a Corporation-designated brokerage firm
     to effect the immediate sale of the purchased shares and remit to the
     Corporation, out of the sale proceeds available on the settlement date,
     sufficient funds to cover the aggregate option price payable for the
     purchased shares plus all applicable

                                       8.
<PAGE>   10


     Federal and State income and employment taxes required to be withheld by
     the Corporation in connection with such purchase and (II) shall provide
     written directives to the Corporation to deliver the certificates for the
     purchased shares directly to such brokerage firm in order to complete the
     sale transaction.

               For purposes of this subparagraph (2), the Exercise Date shall be
the date on which written notice of the option exercise is delivered to the
Corporation. Except to the extent the sale and remittance procedure is utilized
in connection with the exercise of the option, payment of the option price for
the purchased shares must accompany such notice.

               B. Term and Exercise of Options. Each option granted under this
Discretionary Option Grant Program shall be exercisable at such time or times
and during such period as is determined by the Plan Administrator and set forth
in the instrument evidencing the grant. No such option, however, shall have a
maximum term in excess of ten (10) years from the grant date.

               C. Limited Transferability. During the lifetime of the Optionee,
Incentive Options shall be exercisable only by the Optionee and shall not be
assignable or transferable other than by will or by the laws of descent and
distribution following the Optionee's death. However, non-statutory options may,
in connection with the Optionee's estate plan, be assigned in whole or in part
during the Optionee's lifetime to one or more members of the Optionee's
immediate family or to a trust established exclusively for one or more such
family members. The assigned portion may only be exercised by the person or
persons who acquire a proprietary interest in the option pursuant to the
assignment. The terms applicable to the assigned portion shall be the same as
those in effect for the option immediately prior to such assignment and shall be
set forth in such documents issued to the assignee as the Plan Administrator may
deem appropriate.

               D. Termination of Service.

                      1. The following provisions shall govern the exercise
period applicable to any outstanding options held by the Optionee at the time of
cessation of Service or death.

                         - Should an Optionee cease Service for any reason
     (including death or Permanent Disability) while holding one or more
     outstanding options under this Article Two, then none of those options
     shall (except to the extent otherwise provided pursuant to subparagraph
     D.(3) below) remain exercisable for more than a thirty-six (36)-month
     period (or such shorter period determined by the Plan Administrator and set
     forth in the instrument evidencing the grant) measured from the date of
     such cessation of Service.

                         - Any option held by the Optionee under this Article
     Two and exercisable in whole or in part on the date of his or her death may
     be subsequently exercised by the personal representative of the Optionee's
     estate or by the person or persons to whom the option is transferred
     pursuant to the Optionee's will or in accordance with the laws of descent
     and distribution. Such

                                       9.
<PAGE>   11


     exercise, however, must occur prior to the earlier of (i) the first
     anniversary of the date of the Optionee's death or (ii) the specified
     expiration date of the option term. Upon the occurrence of the earlier
     event, the option shall terminate.

                         - Under no circumstances shall any such option be
     exercisable after the specified expiration date of the option term.

                         - During the applicable post-Service exercise period,
     the option may not be exercised in the aggregate for more than the number
     of shares (if any) in which the Optionee is vested at the time of his or
     her cessation of Service. Upon the expiration of the limited post-Service
     exercise period or (if earlier) upon the specified expiration date of the
     option term, each such option shall terminate and cease to be outstanding
     with respect to any vested shares for which the option has not otherwise
     been exercised. However, each outstanding option shall, immediately upon
     the Optionee's cessation of Service for any reason, terminate and cease to
     be outstanding with respect to any shares for which the option is not
     otherwise at that time exercisable or in which the Optionee is not
     otherwise at that time vested.

                         - Should (i) the Optionee's Service be terminated for
     misconduct (including, but not limited to, any act of dishonesty, willful
     misconduct, fraud or embezzlement) or (ii) the Optionee make any
     unauthorized use or disclosure of confidential information or trade secrets
     of the Corporation or its parent or subsidiary corporations, then in any
     such event all outstanding options held by the Optionee under this Article
     Two shall terminate immediately and cease to be outstanding.

               2. The Plan Administrator shall have complete discretion,
exercisable either at the time the option is granted or at any time while the
option remains outstanding, to permit one or more options held by the Optionee
under this Article Two to be exercised, during the limited post-Service exercise
period applicable under subparagraph (1) above, not only with respect to the
number of vested shares of Common Stock for which each such option is
exercisable at the time of the Optionee's cessation of Service but also with
respect to one or more subsequent installments of the option shares in which the
Optionee would have otherwise vested had such cessation of Service not occurred.

               3. The Plan Administrator shall also have full power and
authority to extend the period of time for which the option is to remain
exercisable following the Optionee's cessation of Service or death from the
limited period in effect under subparagraph (1) above to such greater period of
time as the Plan Administrator shall deem appropriate. In no event, however,
shall such option be exercisable after the specified expiration date of the
option term.


                                      10.
<PAGE>   12

               E.     Stockholder Rights.

               An Optionee shall have no stockholder rights with respect to any
shares covered by the option until such individual shall have exercised the
option and paid the option price for the purchased shares.

               F.     Repurchase Rights.

               The shares of Common Stock acquired upon the exercise of any
Article Two option grant may be subject to repurchase by the Corporation in
accordance with the following provisions:

                      (a) The Plan Administrator shall have the discretion to
authorize the issuance of unvested shares of Common Stock under this Article
Two. Should the Optionee cease Service while holding such unvested shares, the
Corporation shall have the right to repurchase any or all of those unvested
shares at the option price paid per share. The terms and conditions upon which
such repurchase right shall be exercisable (including the period and procedure
for exercise and the appropriate vesting schedule for the purchased shares)
shall be established by the Plan Administrator and set forth in the instrument
evidencing such repurchase right.

                      (b) All of the Corporation's outstanding repurchase
rights under this Article Two shall automatically terminate, and all shares
subject to such terminated rights shall immediately vest in full, upon the
occurrence of a Corporate Transaction, except to the extent: (i) any such
repurchase right is expressly assigned to the successor corporation (or parent
thereof) in connection with the Corporate Transaction or (ii) such accelerated
vesting is precluded by other limitations imposed by the Plan Administrator at
the time the repurchase right is issued.

                      (c) The Plan Administrator shall have the discretionary
authority, exercisable either before or after the Optionee's cessation of
Service, to cancel the Corporation's outstanding repurchase rights with respect
to one or more shares purchased or purchasable by the Optionee under this Option
Grant Program and thereby accelerate the vesting of such shares in whole or in
part at any time.

        II.    INCENTIVE OPTIONS

               The terms and conditions specified below shall be applicable to
all Incentive Options granted under this Article Two. Incentive Options may only
be granted to individuals who are Employees of the Corporation. Options which
are specifically designated as "non-statutory" options when issued under the
Plan shall not be subject to such terms and conditions.

               A. Dollar Limitation. The aggregate fair market value (determined
as of the respective date or dates of grant) of the Common Stock for which one
or more options granted to any Employee after December 31, 1986 under this Plan
(or any other option plan of the Corporation or its parent or subsidiary
corporations) may for the first time become exercisable as incentive stock
options under the Federal tax laws during any one calendar year shall not exceed
the sum of One Hundred Thousand Dollars ($100,000). To the extent the Employee
holds two

                                      11.
<PAGE>   13


(2) or more such options which become exercisable for the first time in the same
calendar year, the foregoing limitation on the exercisability of such options as
incentive stock options under the Federal tax laws shall be applied on the basis
of the order in which such options are granted. Should the number of shares of
Common Stock for which any Incentive Option first becomes exercisable in any
calendar year exceed the applicable One Hundred Thousand Dollar ($100,000)
limitation, then that option may nevertheless be exercised in that calendar year
for the excess number of shares as a non-statutory option under the Federal tax
laws.

               B. 10% Stockholder. If any individual to whom an Incentive Option
is granted is the owner of stock (as determined under Section 424(d) of the
Code) possessing ten percent (10%) or more of the total combined voting power of
all classes of stock of the Corporation or any one of its parent or subsidiary
corporations, then the option price per share shall not be less than one hundred
and ten percent (110%) of the fair market value per share of Common Stock on the
grant date, and the option term shall not exceed five (5) years, measured from
the grant date.

               Except as modified by the preceding provisions of this Section
II, the provisions of Articles One, Two and Five of the Plan shall apply to all
Incentive Options granted hereunder.

        III.   CORPORATE TRANSACTIONS/CHANGES IN CONTROL

               A. In the event of any Corporate Transaction, each option which
is at the time outstanding under this Article Two shall automatically accelerate
so that each such option shall, immediately prior to the specified effective
date for the Corporate Transaction, become fully exercisable with respect to the
total number of shares of Common Stock at the time subject to such option and
may be exercised for all or any portion of such shares as fully-vested shares.
However, an outstanding option under this Article Two shall NOT so accelerate if
and to the extent: (i) such option is, in connection with the Corporate
Transaction, either to be assumed by the successor corporation or parent thereof
or to be replaced with a comparable option to purchase shares of the capital
stock of the successor corporation or parent thereof, (ii) such option is to be
replaced with a cash incentive program of the successor corporation which
preserves the option spread existing at the time of the Corporate Transaction
and provides for subsequent payout in accordance with the same vesting schedule
applicable to such option, or (iii) the acceleration of such option is subject
to other limitations imposed by the Plan Administrator at the time of the option
grant. The determination of option comparability under clause (i) above shall be
made by the Plan Administrator, and its determination shall be final, binding
and conclusive.

               B. Immediately following the consummation of the Corporate
Transaction, all outstanding options under this Article Two shall terminate and
cease to be outstanding, except to the extent assumed by the successor
corporation or its parent company.

               C. Each outstanding option under this Article Two which is
assumed in connection with the Corporate Transaction or is otherwise to continue
in effect shall be appropriately adjusted, immediately after such Corporate
Transaction, to apply and pertain to the number and class of securities which
would have been issued to the option holder, in consummation of such Corporate
Transaction, had such person exercised the option immediately

                                      12.
<PAGE>   14


prior to such Corporate Transaction. Appropriate adjustments shall also be made
to the option price payable per share, provided the aggregate option price
payable for such securities shall remain the same. In addition, appropriate
adjustments to reflect the Corporate Transaction shall be made to (i) the class
and number of securities available for issuance over the remaining term of the
Plan, (ii) the maximum number and/or class of securities for which any one
person may be granted stock options, separately exercisable stock appreciation
rights and direct stock issuances under this Plan per calendar year and (iii)
the maximum number and/or class of securities which may be issued pursuant to
Incentive Options granted under the Plan.

               D. The Plan Administrator shall have the discretion, exercisable
either at the time the option is granted or at any time while the option remains
outstanding, to provide (upon such terms as it may deem appropriate) for the
automatic acceleration of one or more outstanding options which are assumed or
replaced in the Corporate Transaction and do not otherwise accelerate at that
time, in the event the Optionee's Service should subsequently terminate within a
designated period following the effective date of such Corporate Transaction.

               E. The grant of options under this Article Two shall in no way
affect the right of the Corporation to adjust, reclassify, reorganize or
otherwise change its capital or business structure or to merge, consolidate,
dissolve, liquidate or sell or transfer all or any part of its business or
assets.

               F. The Plan Administrator shall have the discretionary authority,
exercisable either at the time the option is granted or at any time while the
option remains outstanding, to provide for the automatic acceleration of one or
more outstanding options under this Article Two (and the termination of one or
more of the Corporation's outstanding repurchase rights under this Article Two)
upon the occurrence of any Change in Control. The Plan Administrator shall also
have full power and authority to condition any such option acceleration (and the
termination of any outstanding repurchase rights) upon the subsequent
termination of the Optionee's Service within a specified period following the
Change in Control.

               G. Any options accelerated in connection with the Change in
Control shall remain fully exercisable until the expiration or sooner
termination of the option term.

               H. The exercisability as incentive stock options under the
Federal tax laws of any options accelerated under this Section III in connection
with a Corporate Transaction or Change in Control shall remain subject to the
dollar limitation of Section II of this Article Two. To the extent such dollar
limitation is exceeded, the accelerated option shall be exercisable as a
non-statutory option under the Federal tax laws.

        IV.    CANCELLATION AND REGRANT OF OPTIONS

               The Plan Administrator shall have the authority to effect, at any
time and from time to time, with the consent of the affected optionees, the
cancellation of any or all outstanding options under this Article Two (including
outstanding options under the Predecessor Plans incorporated into this Plan) and
to grant in substitution new options under the Plan covering the same or
different numbers of shares of Common Stock but with an option price per share
not less than the Fair Market Value of the Common Stock on the new grant date.



                                      13.
<PAGE>   15



        V.     STOCK APPRECIATION RIGHTS

               A. Provided and only if the Plan Administrator determines in its
discretion to implement the stock appreciation right provisions of this Section
V, one or more Optionees may be granted the right, exercisable upon such terms
and conditions as the Plan Administrator may establish, to surrender all or part
of an unexercised option under this Article Two in exchange for a distribution
from the Corporation in an amount equal to the excess of (i) the Fair Market
Value (on the option surrender date) of the number of shares in which the
Optionee is at the time vested under the surrendered option (or surrendered
portion thereof) over (ii) the aggregate option price payable for such vested
shares.

               B. No surrender of an option shall be effective hereunder unless
it is approved by the Plan Administrator. If the surrender is so approved, then
the distribution to which the Optionee shall accordingly become entitled under
this Section V may be made in shares of Common Stock valued at Fair Market Value
on the option surrender date, in cash, or partly in shares and partly in cash,
as the Plan Administrator shall in its sole discretion deem appropriate.

               C. If the surrender of an option is rejected by the Plan
Administrator, then the Optionee shall retain whatever rights the Optionee had
under the surrendered option (or surrendered portion thereof) on the option
surrender date and may exercise such rights at any time prior to the later of
(i) five (5) business days after the receipt of the rejection notice or (ii) the
last day on which the option is otherwise exercisable in accordance with the
terms of the instrument evidencing such option, but in no event may such rights
be exercised more than ten (10) years after the date of the option grant.

               D. One or more officers of the Corporation subject to the
short-swing profit restrictions of the Federal securities laws may, in the Plan
Administrator's sole discretion, be granted limited stock appreciation rights in
tandem with their outstanding options under the Plan. Upon the occurrence of a
Hostile Take-Over effected at any time when the Corporation's outstanding Common
Stock is registered under Section 12(g) of the 1934 Act, the officer shall have
a thirty (30)-day period in which he or she may surrender any outstanding option
with such a limited stock appreciation right to the Corporation, to the extent
such option is at the time exercisable for fully-vested shares of Common Stock.
The officer shall in return be entitled to a cash distribution from the
Corporation in an amount equal to the excess of (i) the Take-Over Price of the
vested shares of Common Stock at the time subject to each surrendered option (or
surrendered portion of such option) over (ii) the aggregate exercise price
payable for such shares. The cash distribution payable upon such option
surrender shall be made within five (5) days following the consummation of the
Hostile Take-Over. The Plan Administrator shall pre-approve, at the time the
limited stock appreciation right is granted, the subsequent exercise of that
right in accordance with the terms of the grant and the provisions of this
Section V.D. No additional approval of the Plan Administrator or the Board shall
be required at the time of the actual option surrender and distribution. Any
unsurrendered portion of the option shall continue to remain outstanding and
become exercisable in accordance with the terms of the instrument evidencing
such grant.



                                      14.
<PAGE>   16



               E. The shares of Common Stock subject to any option surrendered
for an appreciation distribution pursuant to this Section V shall NOT be
available for subsequent issuance under the Plan.

                                      15.
<PAGE>   17

                                  ARTICLE THREE

                         AUTOMATIC OPTION GRANT PROGRAM

        I.     ELIGIBILITY

               The provisions of the Automatic Option Grant Program were
revised, effective March 1, 1996, to eliminate the special one-time option grant
for 28,800 shares of Common Stock to each newly-elected or newly-appointed
non-employee Board member and to implement a new program of periodic option
grants to all eligible non-employee Board members. Under the revised Automatic
Option Grant Program, the following individuals shall be eligible to receive
automatic option grants over their period of Board service: (i) those
individuals who were serving as non-employee Board members on the date of the
1996 Annual Stockholders Meeting but who first joined the Board after September
29, 1993, (ii) those individuals who first join the Board as non-employee Board
members after the date of the 1996 Annual Stockholders Meeting and (iii) those
individuals who first joined the Board prior to September 30, 1993 and continue
to serve as non-employee Board members through one or more Annual Stockholders
Meetings, beginning with the 1996 Annual Meeting. However, a non-employee Board
member who has previously been in the employ of the Corporation (or any Parent
or Subsidiary) shall not be eligible to receive a 12,000-share option grant at
the time of his or her initial election or appointment to the Board, but such
individual shall be eligible to receive one or more 4,000-share annual option
grants over his or her period of continued Board service. Each non-employee
Board member eligible to participate in the Automatic Option Grant Program
pursuant to the foregoing criteria shall be designated an Eligible Director for
purposes of the Plan.

        II.    TERMS AND CONDITIONS OF AUTOMATIC OPTION GRANTS

               A. Grant Date.

                      1. Each individual serving as a non-employee Board
member on the date of the 1996 Annual Stockholders Meeting shall be granted on
that date a non-statutory stock option to purchase 12,000 shares of Common Stock
upon the terms and conditions of this Article Three, provided such individual
(i) has not previously been in the employ of the Corporation (or any Parent or
Subsidiary) and (ii) did not join the Board prior to September 30, 1993. If any
such individual previously received an automatic option grant for 28,800 shares
of Common Stock at the time of his or her initial election or appointment to the
Board, then that option was automatically cancelled upon stockholder approval of
the revised Automatic Option Grant Program at the 1996 Annual Meeting.

                      2. Each individual who is first elected or appointed as
a non-employee Board member after the date of the 1996 Annual Stockholders
Meeting shall automatically be granted, on the date of such initial election or
appointment, a non-statutory stock option to purchase 12,000 shares of Common
Stock upon the terms and conditions of this Article Three, provided such
individual has not previously been in the employ of the Corporation (or any
Parent or Subsidiary).


                                      16.
<PAGE>   18



                      3. On the date of each Annual Stockholders Meeting,
beginning with the 1996 Annual Stockholders Meeting, each individual who is to
continue to serve as a non-employee Board member, whether or not he or she is
standing for re-election to the Board at that particular Annual Meeting, shall
automatically be granted a Non-Statutory Option to purchase 4,000 shares of
Common Stock, provided such individual did not receive any other option grants
under this Automatic Option Grant Program within the preceding six (6) months.
There shall be no limit on the number of such 4,000-share option grants any one
Eligible Director may receive over his or her period of Board service, and
individuals who have previously been in the employ of the Corporation (or any
Parent or Subsidiary) shall be eligible to receive such annual option grants
over their period of continued Board service.

               B. Exercise Price. The exercise price per share of Common Stock
subject to each automatic option grant made under this Article Three shall be
equal to one hundred percent (100%) of the Fair Market Value per share of Common
Stock on the automatic grant date.

               C. Payment.

               The exercise price shall be payable in one of the alternative
forms specified below:

                      (i) full payment in cash or check made payable to the
Corporation's order; or

                      (ii) full payment in shares of Common Stock held for
the requisite period necessary to avoid a charge to the Corporation's reported
earnings and valued at Fair Market Value on the Exercise Date (as such term is
defined below); or

                      (iii) full payment in a combination of shares of Common
Stock held for the requisite period necessary to avoid a charge to the
Corporation's reported earnings and valued at Fair Market Value on the Exercise
Date and cash or check payable to the Corporation's order; or

                      (iv) to the extent the option is exercised for vested
shares, full payment through a sale and remittance procedure pursuant to which
the non-employee Board member (I) shall provide irrevocable written instructions
to a Corporation-designated brokerage firm to effect the immediate sale of the
purchased shares and remit to the Corporation, out of the sale proceeds
available on the settlement date, sufficient funds to cover the aggregate
exercise price payable for the purchased shares and shall (II) concurrently
provide written directives to the Corporation to deliver the certificates for
the purchased shares directly to such brokerage firm in order to complete the
sale transaction.

               For purposes of this subparagraph C, the Exercise Date shall be
the date on which written notice of the option exercise is delivered to the
Corporation. Except to the extent the sale and remittance procedure specified
above is utilized in connection with the exercise of the option for vested
shares, payment of the option price for the purchased shares must accompany the
exercise notice. However, if the option is exercised for any unvested shares,
then the optionee must also execute and deliver to the Corporation a stock
purchase agreement for those unvested shares which provides the Corporation with
the right to repurchase, at the exercise price paid per


                                      17.
<PAGE>   19


share, any unvested shares held by the optionee at the time of cessation of
Board service and which precludes the sale, transfer or other disposition of any
shares purchased under the option, to the extent those shares are subject to the
Corporation's repurchase right.

               D. Option Term. Each automatic grant under this Article Three
shall have a maximum term of ten (10) years measured from the automatic grant
date.

               E. Exercisability/Vesting. Each automatic grant shall be
immediately exercisable for any or all of the option shares. However, any shares
purchased under the option shall be subject to repurchase by the Corporation, at
the exercise price paid per share, upon the Optionee's cessation of Board
service prior to vesting in those shares. The shares subject to each
12,000-share initial automatic option grant shall vest as follows: (i) fifty
percent (50%) of the shares shall vest upon the optionee's completion of one (1)
year of Board service measured from the grant date, and (ii) the remaining
shares shall vest in three (3) successive equal annual installments upon the
optionee's completion of each of the next three (3) years of Board service
thereafter. The shares subject to each 4,000-share annual automatic option grant
shall vest upon the optionee's completion of one (1) year of Board service
measured from the grant date. Vesting of the option shares shall be subject to
acceleration as provided in Section II.G and Section III of this Article Three.

               F. Limited Transferability. Each option granted under this
Automatic Option Grant Program prior to the 1997 Annual Stockholders Meeting
shall, during the lifetime of the optionee, be exercisable only by the optionee
and shall not be assignable or transferable by the optionee otherwise than by
will or the by the laws of descent and distribution following the optionee's
death. However, each option granted under this Automatic Option Grant Program on
or after the 1997 Annual Stockholders Meeting shall be assignable in whole or in
part by the optionee during his or her lifetime, but only to the extent such
assignment is made in connection with the optionee's estate plan to one or more
members of the optionee's immediate family or to a trust established exclusively
for one or more such family members. The assigned portion may only be exercised
by the person or persons who acquire a proprietary interest in the option
pursuant to the assignment. The terms applicable to the assigned portion shall
be the same as those in effect for the option immediately prior to such
assignment and shall be set forth in such documents issued to the assignee as
the Plan Administrator may deem appropriate.

               G. Effect of Termination of Board Service.

                      1. Should the Optionee cease to serve as a Board member
for any reason (other than death or Permanent Disability) while holding an
automatic option grant under this Article Three, then such individual shall have
a six (6)--month period following the date of such cessation of Board service in
which to exercise such option for any or all of the option shares in which the
Optionee is vested at the time of such cessation of Board service. The option
shall immediately terminate and cease to be outstanding, at the time of such
cessation of Board service, with respect to any option shares in which the
Optionee is not otherwise at that time vested.


                                      18.
<PAGE>   20

                      2. Should the Optionee die within six (6) months after
cessation of Board service, then any automatic option grant held by the Optionee
at the time of death may subsequently be exercised, for any or all of the option
shares in which the Optionee is vested at the time of his or her cessation of
Board service (less any vested option shares subsequently purchased by the
Optionee prior to death), by the personal representative of the Optionee's
estate or by the person or persons to whom the option is transferred pursuant to
the Optionee's will or in accordance with the laws of descent and distribution.
Any such exercise must occur within twelve (12) months after the date of the
Optionee's death.

                      3. Should the Optionee die or become Permanent Disabled
while serving as a Board member, then the shares of Common Stock at the time
subject to each automatic option grant held by such Optionee under this Article
Three shall immediately vest in full, and the Optionee (or the representative of
the Optionee's estate or the person or persons to whom the option is transferred
upon the Optionee's death) shall have a twelve (12)-month period following the
date of the Optionee's cessation of Board service in which to exercise such
option for any or all of those vested shares of Common Stock.

                      4. In no event shall any automatic grant under this
Article Three remain exercisable after the expiration date of the ten (10)-year
option term. Upon the expiration of the applicable post-service exercise period
under subparagraph 1, 2 or 3 above or (if earlier) upon the expiration of the
ten (10)--year option term, the automatic grant shall terminate and cease to be
outstanding for any option shares in which the Optionee was vested at the time
of his or her cessation of Board service but which were not otherwise purchased
thereunder.

               H. Stockholder Rights. The holder of an automatic option grant
under this Article Three shall have none of the rights of a stockholder with
respect to any shares subject to such option until such individual shall have
exercised the option and paid the exercise price for the purchased shares.

               I. Remaining Terms. The remaining terms and conditions of each
automatic option grant shall be as set forth in the form Non-statutory Stock
Option Agreement attached as Exhibit A.

        III.   CORPORATE TRANSACTION/CHANGE IN CONTROL/HOSTILE TAKE-OVER

               A. In the event of any Corporate Transaction, the shares of
Common Stock at the time subject to each outstanding option under this Article
Three but not otherwise vested shall automatically vest in full so that each
such option shall, immediately prior to the specified effective date for the
Corporate Transaction, become fully exercisable for all of the shares of Common
Stock at the time subject to that option and may be exercised for all or any
portion of such shares as fully-vested shares of Common Stock. Immediately
following the consummation of the Corporate Transaction, all automatic option
grants under this Article Three shall terminate and cease to be outstanding,
unless assumed by the successor corporation or its parent company.

                                      19.
<PAGE>   21


               B. In connection with any Change in Control of the Corporation,
the shares of Common Stock at the time subject to each outstanding option under
this Article Three but not otherwise vested shall automatically vest in full so
that each such option shall, immediately prior to the specified effective date
for the Change in Control, become fully exercisable for all of the shares of
Common Stock at the time subject to that option and may be exercised for all or
any portion of such shares as fully-vested shares of Common Stock. Each such
option shall remain fully exercisable for the option shares which vest in
connection with the Change in Control until the expiration or sooner termination
of the option term.

               C. Upon the occurrence of a Hostile Take-Over, the Optionee shall
have a thirty (30)-day period in which to surrender each option held by him or
her under this Article Three to the Corporation. The Optionee shall in return be
entitled to a cash distribution from the Corporation in an amount equal to the
excess of (i) the Take-Over Price of the shares of Common Stock at the time
subject to the surrendered option (whether or not the Optionee is otherwise at
the time vested in those shares) over (ii) the aggregate exercise price payable
for such shares. Such cash distribution shall be paid within five (5) days
following the consummation of the Hostile Take-Over. Stockholder approval of
this March 1997 restatement of the Plan shall constitute pre-approval of each
option subsequently granted with a surrender provision and the subsequent
surrender of that option in accordance with the terms and provisions of this
Section III.C. No additional approval of the Plan Administrator or the Board
shall be required at the time of the actual option cancellation and cash
distribution.

               D. The shares of Common Stock subject to each option surrendered
in connection with the Hostile Take-Over shall NOT be available for subsequent
issuance under this Plan.

               E. The automatic option grants outstanding under this Article
Three shall in no way affect the right of the Corporation to adjust, reclassify,
reorganize or otherwise change its capital or business structure or to merge,
consolidate, dissolve, liquidate or sell or transfer all or any part of its
business or assets.

                                      20.
<PAGE>   22

                                  ARTICLE FOUR

                             STOCK ISSUANCE PROGRAM

        I.     TERMS AND CONDITIONS OF STOCK ISSUANCES

               Shares may be issued under the Stock Issuance Program through
direct and immediate purchases without any intervening stock option grants. The
issued shares shall be evidenced by a Stock Issuance Agreement ("Issuance
Agreement") that complies with the terms and conditions of this Article Four.

               A. Consideration.

                      1. Shares of Common Stock drawn from the Corporation's
authorized but unissued shares of Common Stock ("Newly Issued Shares") shall be
issued under the Stock Issuance Program for one or more of the following items
of consideration which the Plan Administrator may deem appropriate in each
individual instance:

                         (i) cash or cash equivalents (such as a personal check
or bank draft) paid the Corporation;

                         (ii) a promissory note payable to the Corporation's
order in one or more installments, which may be subject to cancellation in whole
or in part upon terms and conditions established by the Plan Administrator; or

                         (iii) past services rendered to the Corporation or any
parent or subsidiary corporation.

                      2. The consideration for any Newly Issued Shares issued
under this Stock Issuance Program shall have a value determined by the Plan
Administrator to be not less than one-hundred percent (100%) of the Fair Market
Value of those shares at the time of issuance.

                      3. Shares of Common Stock reacquired by the Corporation
and held as treasury shares ("Treasury Shares") may be issued under the Stock
Issuance Program for such consideration (including one or more of the items of
consideration specified in subparagraph 1. above) as the Plan Administrator may
deem appropriate, whether such consideration is in an amount less than, equal
to, or greater than the Fair Market Value of the Treasury Shares at the time of
issuance. Treasury Shares may, in lieu of any cash consideration, be issued
subject to such vesting requirements tied to the Participant's period of future
Service or the Corporation's attainment of specified performance objectives as
the Plan Administrator may establish at the time of issuance.


                                      21.
<PAGE>   23



               B. Vesting Provisions.


                      1. Shares of Common Stock issued under the Stock
Issuance Program may, in the absolute discretion of the Plan Administrator, be
fully and immediately vested upon issuance or may vest in one or more
installments over the Participant's period of Service. The elements of the
vesting schedule applicable to any unvested shares of Common Stock issued under
the Stock Issuance Program, namely:

                         (i) the Service period to be completed by the
Participant or the performance objectives to be achieved by the Corporation,

                         (ii) the number of installments in which the shares are
to vest,

                         (iii) the interval or intervals (if any) which are to
lapse between installments, and

                         (iv) the effect which death, Permanent Disability or
other event designated by the Plan Administrator is to have upon the vesting
schedule,

shall be determined by the Plan Administrator and incorporated into the Issuance
Agreement executed by the Corporation and the Participant at the time such
unvested shares are issued.

                      2. The Participant shall have full stockholder rights
with respect to any shares of Common Stock issued to him or her under the Plan,
whether or not his or her interest in those shares is vested. Accordingly, the
Participant shall have the right to vote such shares and to receive any regular
cash dividends paid on such shares. Any new, additional or different shares of
stock or other property (including money paid other than as a regular cash
dividend) which the Participant may have the right to receive with respect to
his or her unvested shares by reason of any stock dividend, stock split,
reclassification of Common Stock or other similar change in the Corporation's
capital structure or by reason of any Corporate Transaction shall be issued,
subject to (i) the same vesting requirements applicable to his or her unvested
shares and (ii) such escrow arrangements as the Plan Administrator shall deem
appropriate.

                      3. Should the Participant cease to remain in Service
while holding one or more unvested shares of Common Stock under the Plan, then
those shares shall be immediately surrendered to the Corporation for
cancellation, and the Participant shall have no further stockholder rights with
respect to those shares. To the extent the surrendered shares were previously
issued to the Participant for consideration paid in cash or cash equivalent
(including the Participant's purchase-money promissory note), the Corporation
shall repay to the Participant the cash consideration paid for the surrendered
shares and shall cancel the unpaid principal balance of any outstanding
purchase-money note of the Participant attributable to such surrendered shares.
The surrendered shares may, at the Plan Administrator's discretion, be retained
by the Corporation as Treasury Shares or may be retired to authorized but
unissued share status.

                                      22.
<PAGE>   24



                      4. The Plan Administrator may in its discretion elect
to waive the surrender and cancellation of one or more unvested shares of Common
Stock (or other assets attributable thereto) which would otherwise occur upon
the non-completion of the vesting schedule applicable to such shares. Such
waiver shall result in the immediate vesting of the Participant's interest in
the shares of Common Stock as to which the waiver applies. Such waiver may be
effected at any time, whether before or after the Participant's cessation of
Service or the attainment or non-attainment of the applicable performance
objectives.

        II.    CORPORATE TRANSACTIONS/CHANGE IN CONTROL

               A. Upon the occurrence of any Corporate Transaction, all unvested
shares of Common Stock at the time outstanding under the Stock Issuance Program
shall immediately vest in full, except to the extent the Plan Administrator
imposes limitations in the Issuance Agreement which preclude such accelerated
vesting in whole or in part.

               B. The Plan Administrator shall have the discretionary authority,
exercisable either in advance of any actually-anticipated Change in Control or
at the time of an actual Change in Control, to provide for the immediate and
automatic vesting of one or more unvested shares outstanding under the Stock
Issuance Program at the time of such Change in Control. The Plan Administrator
shall also have full power and authority to condition any such accelerated
vesting upon the subsequent termination of the Participant's Service within a
specified period following the Change in Control.

        III.   TRANSFER RESTRICTIONS/SHARE ESCROW

               A. Unvested shares may, in the Plan Administrator's discretion,
be held in escrow by the Corporation until the Participant's interest in such
shares vests or may be issued directly to the Participant with restrictive
legends on the certificates evidencing such unvested shares. To the extent an
escrow arrangement is utilized, the unvested shares and any securities or other
assets issued with respect to such shares (other than regular cash dividends)
shall be delivered in escrow to the Corporation to be held until the
Participant's interest in such shares (or other securities or assets) vests.
Alternatively, if the unvested shares are issued directly to the Participant,
the restrictive legend on the certificates for such shares shall read
substantially as follows:

        "THE SHARES REPRESENTED BY THIS CERTIFICATE ARE UNVESTED AND ARE
        ACCORDINGLY SUBJECT TO (I) CERTAIN TRANSFER RESTRICTIONS AND (II)
        CANCELLATION OR REPURCHASE IN THE EVENT THE REGISTERED HOLDER (OR
        HIS/HER PREDECESSOR IN INTEREST) CEASES TO REMAIN IN THE CORPORATION'S
        SERVICE. SUCH TRANSFER RESTRICTIONS AND THE TERMS AND CONDITIONS OF SUCH
        CANCELLATION OR REPURCHASE ARE SET FORTH IN A STOCK ISSUANCE AGREEMENT
        BETWEEN THE CORPORATION AND THE REGISTERED HOLDER (OR HIS/HER
        PREDECESSOR IN INTEREST) DATED _____________, 199__, A COPY OF WHICH IS
        ON FILE AT THE PRINCIPAL OFFICE OF THE CORPORATION."



                                      23.
<PAGE>   25



               B. The Participant shall have no right to transfer any unvested
shares of Common Stock issued to him or her under the Stock Issuance Program.
For purposes of this restriction, the term "transfer" shall include (without
limitation) any sale, pledge, assignment, encumbrance, gift, or other
disposition of such shares, whether voluntary or involuntary. Upon any such
attempted transfer, the unvested shares shall immediately be cancelled, and
neither the Participant nor the proposed transferee shall have any rights with
respect to those shares. However, the Participant shall have the right to make a
gift of unvested shares acquired under the Stock Issuance Program to his or her
spouse or issue, including adopted children, or to a trust established for such
spouse or issue, provided the donee of such shares delivers to the Corporation a
written agreement to be bound by all the provisions of the Stock Issuance
Program and the Issuance Agreement applicable to the gifted shares.



                                      24.
<PAGE>   26

                                  ARTICLE FIVE

                                  MISCELLANEOUS

        I.     LOANS OR INSTALLMENT PAYMENTS

               A. The Plan Administrator may, in its discretion, assist any
Optionee or Participant (including an Optionee or Participant who is an officer
of the Corporation) in the exercise of one or more options granted to such
Optionee under the Discretionary Option Grant Program or the purchase of one or
more shares issued to such Participant under the Stock Issuance Program,
including the satisfaction of any Federal and State income and employment tax
obligations arising therefrom, by (i) authorizing the extension of a loan from
the Corporation to such Optionee or Participant or (ii) permitting the Optionee
or Participant to pay the option price or purchase price for the purchased
Common Stock in installments over a period of years. The terms of any loan or
installment method of payment (including the interest rate and terms of
repayment) shall be upon such terms as the Plan Administrator specifies in the
applicable option or issuance agreement or otherwise deems appropriate under the
circumstances. Loans or installment payments may be authorized with or without
security or collateral. However, the maximum credit available to the Optionee or
Participant may not exceed the option or purchase price of the acquired shares
(less the par value of such shares) plus any Federal and State income and
employment tax liability incurred by the Optionee or Participant in connection
with the acquisition of such shares.

               B. The Plan Administrator may, in its absolute discretion,
determine that one or more loans extended under this financial assistance
program shall be subject to forgiveness by the Corporation in whole or in part
upon such terms and conditions as the Plan Administrator may deem appropriate.

        II.    AMENDMENT OF THE PLAN AND AWARDS

               A. The Board has complete and exclusive power and authority to
amend or modify the Plan (or any component thereof) in any or all respects
whatsoever. However, no such amendment or modification shall adversely affect
rights and obligations with respect to options at the time outstanding under the
Plan, nor adversely affect the rights of any Participant with respect to Common
Stock issued under the Stock Issuance Program prior to such action, unless the
Optionee or Participant consents to such amendment. In addition, certain
amendments may require stockholder approval pursuant to applicable laws or
regulations.

               B. (i) Options to purchase shares of Common Stock may be granted
under the Discretionary Option Grant Program and (ii) shares of Common Stock may
be issued under the Stock Issuance Program, which are in both instances in
excess of the number of shares then available for issuance under the Plan,
provided any excess shares actually issued under the Discretionary Option Grant
Program or the Stock Issuance Program are held in escrow until stockholder
approval is obtained for a sufficient increase in the number of shares available
for issuance under the Plan. If such stockholder approval is not obtained within
twelve (12) months

                                      25.
<PAGE>   27


after the date the first such excess option grants or excess share issuances are
made, then (I) any unexercised excess options shall terminate and cease to be
exercisable and (II) the Corporation shall promptly refund the purchase price
paid for any excess shares actually issued under the Plan and held in escrow,
together with interest (at the applicable Short Term Federal Rate) for the
period the shares were held in escrow.

        III.   TAX WITHHOLDING

               The Corporation's obligation to deliver shares of Common Stock
upon the exercise of stock options for such shares or the vesting of such shares
under the Plan shall be subject to the satisfaction of all applicable Federal,
State and local income tax and employment tax withholding requirements.

               The Plan Administrator may, in its discretion and in accordance
with the provisions of this Section III of Article Five and such supplemental
rules as the Plan Administrator may from time to time adopt (including the
applicable safe-harbor provisions of SEC Rule 16b-3), provide any or all holders
of non-statutory options (other than the automatic grants made pursuant to
Article Three of the Plan) or unvested shares under the Plan with the right to
use shares of Common Stock in satisfaction of all or part of the Federal, State
and local income and employment withholding taxes to which such holders may
become subject in connection with the exercise of their options or the vesting
of their shares (the "Withholding Taxes"). Such right may be provided to any
such holder in either or both of the following formats:

                      (a) Stock Withholding: The holder of the non-statutory
option or unvested shares may be provided with the election to have the
Corporation withhold, from the shares of Common Stock otherwise issuable upon
the exercise of such non-statutory option or the vesting of such shares, a
portion of those shares with an aggregate Fair Market Value equal to the
percentage of the applicable Withholding Taxes (not to exceed one hundred
percent (100%)) designated by the holder.

                      (b) Stock Delivery: The Plan Administrator may, in its
discretion, provide the holder of the non-statutory option or the unvested
shares with the election to deliver to the Corporation, at the time the
non-statutory option is exercised or the shares vest, one or more shares of
Common Stock previously acquired by such individual (other than in connection
with the option exercise or share vesting triggering the Withholding Taxes) with
an aggregate Fair Market Value equal to the percentage of the Withholding Taxes
incurred in connection with such option exercise or share vesting (not to exceed
one hundred percent (100%)) designated by the holder.

        IV.    EFFECTIVE DATE AND TERM OF PLAN

               A. The Plan was adopted by the Board on July 23, 1993, and was
approved by the stockholders on the same date. The Plan became effective on
September 29, 1993, the date on which the shares of the Corporation's Common
Stock were first registered under the 1934 Act. No further option grants or
stock issuances shall be made under the Predecessor Plans from and after the
Effective Date.



                                      26.
<PAGE>   28



               B. Each stock option grant outstanding under the Predecessor
Plans immediately prior to the Effective Date of the Discretionary Option Grant
Program shall be incorporated into this Plan and treated as an outstanding
option under this Plan, but each such option shall continue to be governed
solely by the terms and conditions of the instrument evidencing such grant, and
nothing in this Plan shall be deemed to affect or otherwise modify the rights or
obligations of the holders of such options with respect to their acquisition of
shares of Common Stock thereunder. Each unvested share of Common Stock
outstanding under the Predecessor Plans on the Effective Date of the Stock
Issuance Program shall continue to be governed solely by the terms and
conditions of the instrument evidencing such share issuance, and nothing in this
Plan shall be deemed to affect or otherwise modify the rights or obligations of
the holder of such unvested shares.

               C. The option/vesting acceleration provisions of Section III of
Article Two and Section II of Article Four relating to Corporate Transactions
and Changes in Control may, in the Plan Administrator's discretion, be extended
to one or more stock options or unvested share issuances which are outstanding
under the Predecessor Plans on the Effective Date of the Discretionary Option
Grant and Stock Issuance Programs but which do not otherwise provide for such
acceleration.

               D. On March 16, 1995, the Board adopted an amendment to the Plan
which (i) increased the number of shares of Common Stock available for issuance
under the Plan by an additional 600,000 shares (as adjusted for the May 1995
stock split), (ii) provided for an automatic annual increase to the existing
share reserve on the first trading day in each of the next five (5) fiscal
years, beginning with the 1996 fiscal year and continuing through fiscal year
2000, equal to 1.4% of the total number of shares of Common Stock outstanding on
the last trading day of the fiscal year immediately preceding the fiscal year of
each such share increase and (iii) imposed certain limitations required under
applicable Federal tax laws with respect to Incentive Option grants. The
amendment was approved by the stockholders at the 1995 Annual Meeting on May 17,
1995.

               E. On March 21, 1996, the Board adopted an amendment to the Plan
which (i) increased the number of shares of Common Stock available for issuance
under the Plan by an additional 600,000 shares, (ii) increased the limit on the
maximum number of shares of Common Stock issuable under the 1993 Plan prior to
the required cessation of further Incentive Option grants to 3,780,000 shares
plus an additional increase of 277,000 shares per fiscal year over each of the
next four (4) fiscal years, beginning with the 1997 fiscal year, (iii) revised
the Automatic Option Grant Program to eliminate the special one-time option
grant for 28,800 shares of Common Stock to each newly-elected or newly-appointed
non-employee Board member and implement a new option grant program pursuant to
which all eligible non-employee Board members will receive a series of automatic
option grants over their period of continued Board service. The amendment was
approved by the stockholders at the 1996 Annual Meeting.

               F. On March 18, 1997, the Board adopted a series of amendments to
the Plan which (i) increased the number of shares of Common Stock reserved for
issuance over the term of the Plan by an additional 450,000 shares, (ii)
rendered all non-employee Board members eligible to receive option grants and
direct stock issuances under the Discretionary Option Grant and Stock Issuance
Programs, (iii) allowed unvested shares issued under the Plan and

                                      27.
<PAGE>   29


subsequently repurchased by the Corporation at the option exercise price or
direct issue price paid per share to be reissued under the Plan, (iv) eliminated
the plan limitation which precluded the grant of additional Incentive Options
once the number of shares of Common Stock issued under the Plan, whether as
vested or unvested shares, exceeded a certain level, (v) removed certain
restrictions on the eligibility of non-employee Board members to serve as Plan
Administrator, and (vi) effected a series of additional changes to the
provisions of the Plan (including the stockholder approval requirements) in
order to take advantage of the recent amendments to Rule 16b-3 of the 1934 Act
which exempts certain officer and director transactions under the Plan from the
short-swing liability provisions of the federal securities laws. The March 18,
1997 amendments were approved by the stockholders at the 1997 Annual Meeting.

               G. The Plan shall terminate upon the earlier of (i) June 30, 2003
or (ii) the date on which all shares available for issuance under the Plan shall
have been issued as vested shares or cancelled pursuant to the exercise of stock
appreciation or other cash-out rights granted under the Plan. If the date of the
plan termination is determined under clause (i) above, then all option grants
and unvested share issuances outstanding on such date shall thereafter continue
to have force and effect in accordance with the provisions of the instruments
evidencing such grants or issuances.

        V.     USE OF PROCEEDS

               Any cash proceeds received by the Corporation from the sale of
shares pursuant to option grants or share issuances under the Plan shall be used
for general corporate purposes.

        VI.    REGULATORY APPROVALS

               A. The implementation of the Plan, the granting of any option
under the Plan, the issuance of any shares under the Stock Issuance Program, and
the issuance of Common Stock upon the exercise or surrender of the option grants
made hereunder shall be subject to the Corporation's procurement of all
approvals and permits required by regulatory authorities having jurisdiction
over the Plan, the options granted under it, and the Common Stock issued
pursuant to it.

               B. No shares of Common Stock or other assets shall be issued or
delivered under this Plan unless and until there shall have been compliance with
all applicable requirements of Federal and State securities laws, including the
filing and effectiveness of the Form S-8 registration statement for the shares
of Common Stock issuable under the Plan, and all applicable listing requirements
of any securities exchange (or the Nasdaq National Market, if applicable) on
which shares of the Common Stock are then listed for trading.

        VII.   NO EMPLOYMENT/SERVICE RIGHTS

               Neither the action of the Corporation in establishing the Plan,
nor any action taken by the Plan Administrator hereunder, nor any provision of
the Plan shall be construed so as to grant any individual the right to remain in
the employ or service of the Corporation (or any


                                      28.
<PAGE>   30

parent or subsidiary corporation) for any period of specific duration, and the
Corporation (or any parent or subsidiary corporation retaining the services of
such individual) may terminate such individual's employment or service at any
time and for any reason, with or without cause.

        VIII.  MISCELLANEOUS PROVISIONS

               A. The right to acquire Common Stock or other assets under the
Plan may not be assigned, encumbered or otherwise transferred by any Optionee or
Participant.

               B. The provisions of the Plan relating to the exercise of options
and the vesting of shares shall be governed by the laws of the State of
California, as such laws are applied to contracts entered into and performed in
such State.

               C. The provisions of the Plan shall inure to the benefit of, and
be binding upon, the Corporation and its successors or assigns, whether by
Corporate Transaction or otherwise, and the Participants and Optionees and the
legal representatives, heirs or legatees of their respective estates.


                                      29.




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