CLARENT CORP/CA
S-8, EX-99.1, 2000-08-02
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                                                                    EXHIBIT 99.1

                             Clarent Corporation

               1999 Amended and Restated Equity Incentive Plan

                            Adopted April 8, 1999
                   Approved By Stockholders June 22, 1999
            Amended by Stockholder Approval on February 15, 2000
               Amended by the Board of Directors April 7, 2000
                    Approved by Stockholders June 7, 2000
                       Termination Date: April 7, 2009

  This Clarent Corporation 1999 Amended and Restated Equity Incentive Plan
amends and restates, in its entirety, the Clarent Corporation 1996 Stock
Option Plan adopted October 11, 1996, and amended on May 29, 1997, May 29,
1998 and October 22, 1998.

1. Purposes.

  (a) Eligible Stock Award Recipients. The persons eligible to receive Stock
      Awards are the Employees, Directors and Consultants of the Company and
      its Affiliates.

  (b) Available Stock Awards. The purpose of the Plan is to provide a means
      by which selected Employees, Directors and Consultants may be given an
      opportunity to benefit from increases in value of the Common Stock
      through the granting of: (i) Incentive Stock Options, (ii) Nonstatutory
      Stock Options, (iii) stock bonuses, (iv) rights to acquire restricted
      stock and (v) Stock Appreciation Rights.

  (c) General Purpose. The Company, by means of the Plan, seeks to retain the
      services of persons who are now Employees, Directors or Consultants, to
      secure and retain the services of new Employees, Directors and
      Consultants and to provide incentives for such persons to exert maximum
      efforts for the success of the Company and its Affiliates.

2. Definitions.

  (a) "Affiliate" means any parent corporation or subsidiary corporation of
      the Company, whether now or hereafter existing, as those terms are
      defined in Sections 424(e) and (f), respectively, of the Code.

  (b) "Board" means the Board of Directors of the Company.

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

  (d) "Committee" means a Committee appointed by the Board in accordance with
      subsection 3(c).

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

  (f) "Company" means Clarent Corporation, a California corporation.

  (g) "Concurrent Stock Appreciation Right" or "Concurrent Right" means a
      right granted pursuant to subsection 8(b)(ii) of the Plan.

  (h) "Consultant" means any person, including an advisor, (1) engaged by the
      Company or an Affiliate to render consulting or advisory services and
      who is compensated for such services or (2) who is a member of the
      Board of Directors of an Affiliate. However, the term "Consultant"
      shall not include either Directors of the Company who are not
      compensated by the Company for their services as Directors or Directors
      of the Company who are merely paid a director's fee by the Company for
      their services as Directors.

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  (i) "Continuous Service" means that the Participant's service with the
      Company or an Affiliate, whether as an Employee, Director or
      Consultant, is not interrupted or terminated. The Participant's
      Continuous Service shall not be deemed to have terminated merely
      because of a change in the capacity in which the Participant renders
      service to the Company or an Affiliate as an Employee, Consultant or
      Director or a change in the entity for which the Participant renders
      such service, provided that there is no interruption or termination of
      the Participant's Continuous Service. For example, a change in status
      from an Employee of the Company to a Consultant of an Affiliate or a
      Director of the Company will not constitute an interruption of
      Continuous Service. The Board or the chief executive officer of the
      Company, in that party's sole discretion, may determine whether
      Continuous Service shall be considered interrupted in the case of any
      leave of absence approved by that party, including sick leave, military
      leave or any other personal leave.

  (j) "Covered Employee" means the chief executive officer and the four (4)
      other highest compensated officers of the Company for whom total
      compensation is required to be reported to stockholders under the
      Exchange Act, as determined for purposes of Section 162(m) of the Code.

  (k) "Director" means a member of the Board.

  (l) "Disability" means (i) before the Listing Date, the inability of a
      person, in the opinion of a qualified physician acceptable to the
      Company, to perform the major duties of that person's position with the
      Company or an Affiliate of the Company because of the sickness or
      injury of the person and (ii) after the Listing Date, the permanent and
      total disability of a person within the meaning of Section 22(e)(3) of
      the Code.

  (m) "Employee" means any person employed by the Company or an Affiliate.
      Neither service as a Director nor payment of a director's fee by the
      Company or an Affiliate shall be sufficient to constitute "employment"
      by the Company or an Affiliate.

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

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

    (i) If the Common Stock is listed on any established stock exchange or
        traded on the NASDAQ National Market System or the NASDAQ SmallCap
        Market, the Fair Market Value of a share of Common Stock shall be
        the closing sales price for such stock (or the closing bid, if no
        sales were reported) as quoted on such exchange or market (or the
        exchange or market with the greatest volume of trading in the
        Common Stock) on the last market trading day prior to the time of
        determination (which may be the same calendar day), as reported in
        The Wall Street Journal or such other source as the Board deems
        reliable.

    (ii) In the absence of such markets for the Common Stock, the Fair
         Market Value shall be determined in good faith by the Board.

    (iii) Prior to the Listing Date, the value of the Common Stock shall be
       determined in a manner consistent with Section 260.140.50 of Title
       10 of the California Code of Regulations.

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

  (q) "Independent Stock Appreciation Right" or "Independent Right" means a
      right granted pursuant to subsection 8(b)(iii) of the Plan.

  (r) "Listing Date" means the first date upon which any security of the
      Company is listed (or approved for listing) upon notice of issuance on
      any securities exchange or designated (or approved for designation)
      upon notice of issuance as a national market security on an interdealer
      quotation system if

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     such securities exchange or interdealer quotation system has been
     certified in accordance with the provisions of Section 25100(o) of the
     California Corporate Securities Law of 1968.

  (s) "Non-Employee Director" means a Director who either (i) is not a
      current Employee or Officer of the Company or its parent or a
      subsidiary, does not receive compensation (directly or indirectly) from
      the Company or its parent or a subsidiary for services rendered as a
      consultant or in any capacity other than as a Director (except for an
      amount as to which disclosure would not be required under Item 404(a)
      of Regulation S-K promulgated pursuant to the Securities Act
      ("Regulation S-K")), does not possess an interest in any other
      transaction as to which disclosure would be required under Item 404(a)
      of Regulation S-K and is not engaged in a business relationship as to
      which disclosure would be required under Item 404(b) of Regulation S-K;
      or (ii) is otherwise considered a "non-employee director" for purposes
      of Rule 16b-3.

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

  (u) "Officer" means (i) before the Listing Date, any person designated by
      the Company as an officer and (ii) on and after the Listing Date, a
      person who is an officer of the Company within the meaning of Section
      16 of the Exchange Act and the rules and regulations promulgated
      thereunder.

  (v) "Option" means an Incentive Stock Option or a Nonstatutory Stock Option
      granted pursuant to the Plan.

  (w) "Option Agreement" means a written agreement between the Company and an
      Optionholder evidencing the terms and conditions of an individual
      Option grant. Each Option Agreement shall be subject to the terms and
      conditions of the Plan.

  (x) "Optionholder" means a person to whom an Option is granted pursuant to
      the Plan or, if applicable, such other person who holds an outstanding
      Option.

  (y) "Outside Director" means a Director of the Company who either (i) is
      not a current employee of the Company or an "affiliated corporation"
      (within the meaning of Treasury Regulations promulgated under Section
      162(m) of the Code), is not a former employee of the Company or an
      "affiliated corporation" receiving compensation for prior services
      (other than benefits under a tax qualified pension plan), was not an
      officer of the Company or an "affiliated corporation" at any time and
      is not currently receiving direct or indirect remuneration from the
      Company or an "affiliated corporation" for services in any capacity
      other than as a Director or (ii) is otherwise considered an "outside
      director" for purposes of Section 162(m) of the Code.

  (z) "Participant" means a person to whom a Stock Award is granted pursuant
      to the Plan or, if applicable, such other person who holds an
      outstanding Stock Award.

  (aa) "Plan" means this Clarent Corporation 1999 Equity Incentive Plan.

  (bb) "Rule 16b-3" means Rule 16b-3 promulgated under the Exchange Act or
     any successor to Rule 16b-3, as in effect from time to time.

  (cc) "Securities Act" means the Securities Act of 1933, as amended.

  (dd) "Stock Appreciation Right" means any of the various types of rights
     which may be granted under Section 8 of the Plan.

  (ee) "Stock Award" means any right granted under the Plan, including an
     Option, a stock bonus, any right to acquire restricted stock and any
     Stock Appreciation Right.


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  (ff) "Stock Award Agreement" means a written agreement between the Company
     and a holder of a Stock Award evidencing the terms and conditions of an
     individual Stock Award grant. Each Stock Award Agreement shall be
     subject to the terms and conditions of the Plan.

  (gg) "Tandem Stock Appreciation Right" or "Tandem Right" means a right
     granted pursuant to subsection 8(b)(1) of the Plan.

  (hh) "Ten Percent Stockholder" means a person who owns (or is deemed to own
     pursuant to Section 424(d) of the Code) stock possessing more than ten
     percent (10%) of the total combined voting power of all classes of stock
     of the Company or of any of its Affiliates.

3. Administration.

  (a) Administration by Board. The Board will administer the Plan unless and
      until the Board delegates administration to a Committee, as provided in
      subsection 3(c).

  (b) Powers of Board. The Board shall have the power, subject to, and within
      the limitations of, the express provisions of the Plan:

    (i) To determine from time to time which of the persons eligible under
        the Plan shall be granted Stock Awards; when and how each Stock
        Award shall be granted; what type or combination of types of Stock
        Award shall be granted; the provisions of each Stock Award granted
        (which need not be identical), including the time or times when a
        person shall be permitted to receive stock pursuant to a Stock
        Award; and the number of shares with respect to which a Stock Award
        shall be granted to each such person.

    (ii) To construe and interpret the Plan and Stock Awards granted under
         it, and to establish, amend and revoke rules and regulations for
         its administration. The Board, in the exercise of this power, may
         correct any defect, omission or inconsistency in the Plan or in
         any Stock Award Agreement, in a manner and to the extent it shall
         deem necessary or expedient to make the Plan fully effective.

    (iii) To amend the Plan or a Stock Award as provided in Section 13.

    (iv) Generally, to exercise such powers and to perform such acts as the
         Board deems necessary or expedient to promote the best interests
         of the Company which are not in conflict with the provisions of
         the Plan.

  (c) Delegation to Committee.

    (i) General. The Board may delegate administration of the Plan to a
        Committee or Committees of one or more members of the Board, and
        the term "Committee" shall apply to any person or persons to whom
        such authority has been delegated. If administration is delegated
        to a Committee, the Committee shall have, in connection with the
        administration of the Plan, the powers theretofore possessed by the
        Board, including the power to delegate to a subcommittee any of the
        administrative powers the Committee is authorized to exercise (and
        references in this Plan to the Board shall thereafter be to the
        Committee or subcommittee), subject, however, to such resolutions,
        not inconsistent with the provisions of the Plan, as may be adopted
        from time to time by the Board. The Board may abolish the Committee
        at any time and revest in the Board the administration of the Plan.

    (ii) Committee Composition when Common Stock is Publicly Traded. At
         such time as the Common Stock is publicly traded, in the
         discretion of the Board, a Committee may consist solely of two or
         more Outside Directors, in accordance with Section 162(m) of the
         Code, and/or solely of two or more Non-Employee Directors, in
         accordance with Rule 16b-3. Within the scope of such

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       authority, the Board or the Committee may (i) delegate to a committee
       of one or more members of the Board who are not Outside Directors,
       the authority to grant Stock Awards to eligible persons who are
       either (a) not then Covered Employees and are not expected to be
       Covered Employees at the time of recognition of income resulting from
       such Stock Award or (b) not persons with respect to whom the Company
       wishes to comply with Section 162(m) of the Code and/or (ii) delegate
       to a committee of one or more members of the Board who are not Non-
       Employee Directors the authority to grant Stock Awards to eligible
       persons who are not then subject to Section 16 of the Exchange Act.

4. Shares Subject to the Plan.

  (a) Share Reserve. Subject to the provisions of Section 12 relating to
      adjustments upon changes in stock, the stock that may be issued
      pursuant to Stock Awards shall not exceed in the aggregate Sixteen
      Million Seven Hundred Ninety Two Thousand Four Hundred Sixty Five
      (16,792,465) shares of Common Stock, such number to be increased each
      year on, respectively, January 31, 2001, January 31, 2002, January 31,
      2003, and January 31, 2004, by that number of shares equal to two and
      one-half percent (2.5%) of the Company's outstanding shares, measured
      as of such date. Notwithstanding the foregoing (and subject to the
      provisions of Section 12), the stock that may be issued pursuant to
      Incentive Stock Options shall not exceed in the aggregate Sixteen
      Million Seven Hundred Ninety Two Thousand Four Hundred Sixty Five
      (16,792,465) shares of Common Stock, and the stock that may be issued
      pursuant to stock bonuses or restricted stock agreements shall not
      exceed thirty percent (30%) of the Share Reserve.

  (b) Reversion of Shares to the Share Reserve. If any Stock Award shall for
      any reason expire or otherwise terminate, in whole or in part, without
      having been exercised in full (or vested in the case of restricted
      stock), the stock not acquired under such Stock Award shall revert to
      and again become available for issuance under the Plan. If any Common
      Stock acquired pursuant to the exercise of an Option shall for any
      reason be repurchased by the Company under an unvested share repurchase
      option provided under the Plan, the stock repurchased by the Company
      under such repurchase option shall revert to and again become available
      for issuance, pursuant to Stock Awards other than Incentive Stock
      Options, under the Plan. Shares subject to Stock Appreciation Rights
      exercised in accordance with Section 8 of the Plan shall not be
      available for subsequent issuance under the Plan.

  (c) Source of Shares. The stock subject to the Plan may be unissued shares
      or reacquired shares, bought on the market or otherwise.

  (d) Share Reserve Limitation. Prior to the Listing Date, at no time shall
      the total number of shares issuable upon exercise of all outstanding
      Options and the total number of shares provided for under any stock
      bonus or similar plan of the Company exceed the applicable percentage
      as calculated in accordance with the conditions and exclusions of
      Section 260.140.45 of Title 10 of the California Code of Regulations,
      based on the shares of the Company which are outstanding at the time
      the calculation is made.

5. Eligibility.

  (a) Eligibility for Specific Stock Awards. Incentive Stock Options and
      Stock Appreciation Rights appurtenant thereto may be granted only to
      Employees. Stock Awards other than Incentive Stock Options and Stock
      Appreciation Rights thereto may be granted to Employees, Directors and
      Consultants.

  (b) Ten Percent Stockholders. No Ten Percent Stockholder shall be eligible
      for the grant of an Incentive Stock Option unless the exercise price of
      such Option is at least one hundred ten percent (110%) of the Fair
      Market Value of the Common Stock at the date of grant and the Option is
      not exercisable after the expiration of five (5) years from the date of
      grant.


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    Prior to the Listing Date, no Ten Percent Stockholder shall be eligible
    for the grant of a Nonstatutory Stock Option unless the exercise price
    of such Option is at least one hundred ten percent (110%) of the Fair
    Market Value of the Common Stock at the date of grant.

    Prior to the Listing Date, no Ten Percent Stockholder shall be eligible
    for a restricted stock award unless the purchase price of the
    restricted stock is at least one hundred percent (100%) of the Fair
    Market Value of the Common Stock at the date of grant.

  (c) Section 162(m) Limitation. Subject to the provisions of Section 12
      relating to adjustments upon changes in stock, no employee shall be
      eligible to be granted Options and Stock Appreciation Rights covering
      more than seven hundred twenty thousand (720,000) shares of the Common
      Stock during any calendar year. This subsection 5(c) shall not apply
      prior to the Listing Date and, following the Listing Date, this
      subsection 5(c) shall not apply until (i) the earliest of: (1) the
      first material modification of the Plan (including any increase in the
      number of shares reserved for issuance under the Plan in accordance
      with Section 4); (2) the issuance of all of the shares of Common Stock
      reserved for issuance under the Plan; (3) the expiration of the Plan;
      or (4) the first meeting of stockholders at which Directors of the
      Company are to be elected that occurs after the close of the third
      calendar year following the calendar year in which occurred the first
      registration of an equity security under Section 12 of the Exchange
      Act; or (ii) such other date required by Section 162(m) of the Code and
      the rules and regulations promulgated thereunder.

  (d) Consultants.

    (i) Prior to the Listing Date, a Consultant shall not be eligible for
        the grant of a Stock Award if, at the time of grant, either the
        offer or the sale of the Company's securities to such Consultant is
        not exempt under Rule 701 of the Securities Act ("Rule 701")
        because of the nature of the services that the Consultant is
        providing to the Company, or because the Consultant is not a
        natural person, or as otherwise provided by Rule 701, unless the
        Company determines that such grant need not comply with the
        requirements of Rule 701 and will satisfy another exemption under
        the Securities Act as well as comply with the securities laws of
        all other relevant jurisdictions.

    (ii) From and after the Listing Date, a Consultant shall not be
         eligible for the grant of a Stock Award if, at the time of grant,
         a Form S-8 Registration Statement under the Securities Act ("Form
         S-8") is not available to register either the offer or the sale of
         the Company's securities to such Consultant because of the nature
         of the services that the Consultant is providing to the Company,
         or because the Consultant is not a natural person, or as otherwise
         provided by the rules governing the use of Form S-8, unless the
         Company determines both (i) that such grant (A) shall be
         registered in another manner under the Securities Act (e.g., on a
         Form S-3 Registration Statement) or (B) does not require
         registration under the Securities Act in order to comply with the
         requirements of the Securities Act, if applicable, and (ii) that
         such grant complies with the securities laws of all other relevant
         jurisdictions.

    (iii) As of April 7, 1999 Rule 701 and Form S-8 generally are available
          to consultants and advisors only if (i) they are natural persons;
          (ii) they provide bona fide services to the issuer, its parents,
          its majority-owned subsidiaries or majority-owned subsidiaries of
          the issuer's parent; and (iii) the services are not in connection
          with the offer or sale of securities in a capital-raising
          transaction, and do not directly or indirectly promote or
          maintain a market for the issuer's securities.

6. Option Provisions.

  Each Option shall be in such form and shall contain such terms and
  conditions as the Board shall deem appropriate. All Options shall be
  separately designated Incentive Stock Options or Nonstatutory Stock Options
  at the time of grant, and a separate certificate or certificates will be
  issued for shares purchased on exercise of each type of Option. The
  provisions of separate Options need not be identical, but each Option

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  shall include (through incorporation of provisions hereof by reference in
  the Option or otherwise) the substance of each of the following provisions:

  (a) Term. Subject to the provisions of subsection 5(b) regarding Ten
      Percent Stockholders, no Incentive Stock Option shall be exercisable
      after the expiration of ten (10) years from the date it was granted.

  (b) Exercise Price of an Incentive Stock Option. Subject to the provisions
      of subsection 5(b) regarding Ten Percent Stockholders, the exercise
      price of each Incentive Stock Option shall be not less than one hundred
      percent (100%) of the Fair Market Value of the stock subject to the
      Option on the date the Option is granted. Notwithstanding the
      foregoing, an Incentive Stock Option may be granted with an exercise
      price lower than that set forth in the preceding sentence if such
      Option is granted pursuant to an assumption or substitution for another
      option in a manner satisfying the provisions of Section 424(a) of the
      Code.

  (c) Exercise Price of a Nonstatutory Stock Option. Subject to the
      provisions of subsection 5(b) regarding Ten Percent Stockholders, the
      exercise price of each Nonstatutory Stock Option granted prior to the
      Listing Date shall be not less than one hundred percent (100%) of the
      Fair Market Value of the stock subject to the Option on the date the
      Option is granted. The exercise price of each Nonstatutory Stock Option
      granted on or after the Listing Date shall be not less than one hundred
      percent (100%) of the Fair Market Value of the stock subject to the
      Option on the date the Option is granted. Notwithstanding the
      foregoing, a Nonstatutory Stock Option may be granted with an exercise
      price lower than that set forth in the preceding sentence if such
      Option is granted pursuant to an assumption or substitution for another
      option in a manner satisfying the provisions of Section 424(a) of the
      Code.

  (d) Consideration. The purchase price of stock acquired pursuant to an
      Option shall be paid, to the extent permitted by applicable statutes
      and regulations, either (i) in cash at the time the Option is exercised
      or (ii) at the discretion of the Board at the time of the grant of the
      Option (or subsequently in the case of a Nonstatutory Stock Option) by
      delivery to the Company of other Common Stock, according to a deferred
      payment or other arrangement (which may include, without limiting the
      generality of the foregoing, the use of other Common Stock) with the
      Participant or in any other form of legal consideration that may be
      acceptable to the Board; provided, however, that at any time that the
      Company is incorporated in Delaware, payment of the Common Stock's "par
      value," as defined in the Delaware General Corporation Law, shall not
      be made by deferred payment.

    In the case of any deferred payment arrangement, interest shall be
    compounded at least annually and shall be charged at the minimum rate
    of interest necessary to avoid the treatment as interest, under any
    applicable provisions of the Code, of any amounts other than amounts
    stated to be interest under the deferred payment arrangement.

  (e) Transferability of an Incentive Stock Option. An Incentive Stock Option
      shall not be transferable except by will or by the laws of descent and
      distribution and shall be exercisable during the lifetime of the
      Optionholder only by the Optionholder. Notwithstanding the foregoing
      provisions of this subsection 6(e), the Optionholder may, by delivering
      written notice to the Company, in a form satisfactory to the Company,
      designate a third party who, in the event of the death of the
      Optionholder, shall thereafter be entitled to exercise the Option.

  (f) Transferability of a Nonstatutory Stock Option. Except to the extent
      permitted by law, a Nonstatutory Stock Option granted prior to the
      Listing Date shall not be transferable except by will or by the laws of
      descent and distribution and shall be exercisable during the lifetime
      of the Optionholder only by the Optionholder. A Nonstatutory Stock
      Option granted on or after the Listing Date shall be transferable to
      the extent provided in the Option Agreement. If the Nonstatutory Stock
      Option does not provide for transferability, then the Nonstatutory
      Stock Option shall not be transferable except by will or by the laws of
      descent and distribution and shall be exercisable during the lifetime
      of the Optionholder only

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     by the Optionholder. Notwithstanding the foregoing provisions of this
     subsection 6(f), the Optionholder may, by delivering written notice to
     the Company, in a form satisfactory to the Company, designate a third
     party who, in the event of the death of the Optionholder, shall
     thereafter be entitled to exercise the Option.

  (g) Vesting Generally. The total number of shares of Common Stock subject
      to an Option may, but need not, vest and therefore become exercisable
      in periodic installments which may, but need not, be equal. The Option
      may be subject to such other terms and conditions on the time or times
      when it may be exercised (which may be based on performance or other
      criteria) as the Board may deem appropriate. The vesting provisions of
      individual Options may vary. The provisions of this subsection 6(g) are
      subject to any Option provisions governing the minimum number of shares
      as to which an Option may be exercised.

  (h) Minimum Vesting Prior to the Listing Date. Notwithstanding the
      foregoing subsection 6(g), Options granted prior to the Listing Date
      shall provide for vesting of the total number of shares at a rate of at
      least twenty percent (20%) per year over five (5) years from the date
      the Option was granted, subject to reasonable conditions such as
      continued employment. However, in the case of such Options granted to
      Officers, Directors or Consultants, the Option may become fully
      exercisable, subject to reasonable conditions such as continued
      employment, at any time or during any period established by the
      Company; for example, the vesting provision of the Option may provide
      for vesting of less than twenty percent (20%) per year of the total
      number of shares subject to the Option.

  (i) Termination of Continuous Service. In the event an Optionholder's
      Continuous Service terminates (other than upon the Optionholder's death
      or Disability), the Optionholder may exercise his or her Option (to the
      extent that the Optionholder was entitled to exercise it as of the date
      of termination) but only within such period of time ending on the
      earlier of (i) the date three (3) months following the termination of
      the Optionholder's Continuous Service (or such longer or shorter period
      specified in the Option Agreement, which, for Options granted prior to
      the Listing Date, shall not be less than thirty (30) days, unless such
      termination is for cause) or (ii) the expiration of the term of the
      Option as set forth in the Option Agreement. If, after termination, the
      Optionholder does not exercise his or her Option within the time
      specified in the Option Agreement, the Option shall terminate.

  (j) Extension of Termination Date. An Optionholder's Option Agreement may
      also provide that if the exercise of the Option following the
      termination of the Optionholder's Continuous Service (other than upon
      the Optionholder's death or Disability) would be prohibited at any time
      solely because the issuance of shares would violate the registration
      requirements under the Securities Act, then the Option shall terminate
      on the earlier of (i) the expiration of the term of the Option set
      forth in subsection 6(a) or (ii) the expiration of a period of three
      (3) months after the termination of the Optionholder's Continuous
      Service during which the exercise of the Option would not be in
      violation of such registration requirements.

  (k) Disability of Optionholder. In the event an Optionholder's Continuous
      Service terminates as a result of the Optionholder's Disability, the
      Optionholder may exercise his or her Option (to the extent that the
      Optionholder was entitled to exercise it as of the date of
      termination), but only within such period of time ending on the earlier
      of (i) the date twelve (12) months following such termination (or such
      longer or shorter period specified in the Option Agreement, which, for
      Options granted prior to the Listing Date, shall not be less than six
      (6) months) or (ii) the expiration of the term of the Option as set
      forth in the Option Agreement. If, after termination, the Optionholder
      does not exercise his or her Option within the time specified herein,
      the Option shall terminate.

  (l) Death of Optionholder. In the event (i) an Optionholder's Continuous
      Service terminates as a result of the Optionholder's death or (ii) the
      Optionholder dies within the period (if any) specified in the Option
      Agreement after the termination of the Optionholder's Continuous
      Service for a reason other

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     than death, then the Option may be exercised (to the extent the
     Optionholder was entitled to exercise the Option as of the date of
     death) by the Optionholder's estate, by a person who acquired the right
     to exercise the Option by bequest or inheritance or by a person
     designated to exercise the option upon the Optionholder's death pursuant
     to subsection 6(e) or 6(f), but only within the period ending on the
     earlier of (1) the date eighteen (18) months following the date of death
     (or such longer or shorter period specified in the Option Agreement,
     which, for Options granted prior to the Listing Date, shall not be less
     than six (6) months) or (2) the expiration of the term of such Option as
     set forth in the Option Agreement. If, after death, the Option is not
     exercised within the time specified herein, the Option shall terminate.

  (m) Early Exercise. The Option may, but need not, include a provision
      whereby the Optionholder may elect at any time before the
      Optionholder's Continuous Service terminates to exercise the Option as
      to any part or all of the shares subject to the Option prior to the
      full vesting of the Option. Subject to the "Repurchase Limitation" in
      subsection 11(h), any unvested shares so purchased may be subject to an
      unvested share repurchase option in favor of the Company or to any
      other restriction the Board determines to be appropriate.

  (n) Right of Repurchase. Subject to the "Repurchase Limitation" in
      subsection 11(h), the Option may, but need not, include a provision
      whereby the Company may elect, prior to the Listing Date, to repurchase
      all or any part of the vested shares acquired by the Optionholder
      pursuant to the exercise of the Option.

  (o) Right of First Refusal. The Option may, but need not, include a
      provision whereby the Company may elect, prior to the Listing Date, to
      exercise a right of first refusal following receipt of notice from the
      Optionholder of the intent to transfer all or any part of the shares
      exercised pursuant to the Option. Except as expressly provided in this
      subsection 6(o), such right of first refusal shall otherwise comply
      with any applicable provisions of the Bylaws of the Company.

  (p) Re-Load Options. Without in any way limiting the authority of the Board
      to make or not to make grants of Options hereunder, the Board shall
      have the authority (but not an obligation) to include as part of any
      Option Agreement a provision entitling the Optionholder to a further
      Option (a "Re-Load Option") in the event the Optionholder exercises the
      Option evidenced by the Option Agreement, in whole or in part. Any such
      Re-Load Option shall (i) provide for a number of shares equal to the
      number of shares acquired upon exercise of such Option; (ii) have an
      expiration date which is the same as the expiration date of the Option
      the exercise of which gave rise to such Re-Load Option; and (iii) have
      an exercise price which is equal to one hundred percent (100%) of the
      Fair Market Value of the Common Stock subject to the Re-Load Option on
      the date of exercise of the original Option. Notwithstanding the
      foregoing, a Re-Load Option shall be subject to the same exercise price
      and term provisions heretofore described for Options under the Plan,
      including the provisions of Section 5(b) applicable to Ten Percent
      Stockholders.

    Any such Re-Load Option may be an Incentive Stock Option or a
    Nonstatutory Stock Option, as the Board may designate at the time of the
    grant of the original Option; provided, however, that the designation of
    any Re-Load Option as an Incentive Stock Option shall be subject to the
    one hundred thousand dollars ($100,000) annual limitation on
    exercisability of Incentive Stock Options described in subsection 11(d)
    and in Section 422(d) of the Code. There shall be no Re-Load Options on
    a Re-Load Option. Any such Re-Load Option shall be subject to the
    availability of sufficient shares under subsection 4(a) and the "Section
    162(m) Limitation" on the grants of Options under subsection 5(c) and
    shall be subject to such other terms and conditions as the Board may
    determine which are not inconsistent with the express provisions of the
    Plan regarding the terms of Options.

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<PAGE>

7. Provisions of Stock Awards other than Options.

  (a) Stock Bonus Awards. Each stock bonus agreement shall be in such form
      and shall contain such terms and conditions as the Board shall deem
      appropriate. The terms and conditions of stock bonus agreements may
      change from time to time, and the terms and conditions of separate
      stock bonus agreements need not be identical, but each stock bonus
      agreement shall include (through incorporation of provisions hereof by
      reference in the agreement or otherwise) the substance of each of the
      following provisions:


    (i) Consideration. A stock bonus shall be awarded in consideration for
        past services actually rendered to the Company for its benefit.

    (ii) Vesting. Subject to the "Repurchase Limitation" in subsection
         11(h), shares of Common Stock awarded under the stock bonus
         agreement may, but need not, be subject to a share repurchase
         option in favor of the Company in accordance with a vesting
         schedule to be determined by the Board.

    (iii) Termination of Participant's Continuous Service. Subject to the
          "Repurchase Limitation" in subsection 11(h), in the event a
          Participant's Continuous Service terminates, the Company may
          reacquire any or all of the shares of Common Stock held by the
          Participant which have not vested as of the date of termination
          under the terms of the stock bonus agreement.

    (iv) Transferability. Shares of Common Stock granted pursuant to a
         stock bonus agreement shall not be transferable prior to the time
         they become vested.

  (b) Restricted Stock Awards. Each restricted stock purchase agreement shall
      be in such form and shall contain such terms and conditions as the
      Board shall deem appropriate. The terms and conditions of the
      restricted stock purchase agreements may change from time to time, and
      the terms and conditions of separate restricted stock purchase
      agreements need not be identical, but each restricted stock purchase
      agreement shall include (through incorporation of provisions hereof by
      reference in the agreement or otherwise) the substance of each of the
      following provisions:

    (i) Purchase Price. Subject to the provisions of subsection 5(b)
        regarding Ten Percent Stockholders, the purchase price under each
        restricted stock purchase agreement shall be such amount as the
        Board shall determine and designate in such restricted stock
        purchase agreement. For restricted stock awards made prior to the
        Listing Date, the purchase price shall not be less than one hundred
        percent (100%) of the stock's Fair Market Value on the date such
        award is made or at the time the purchase is consummated. For
        restricted stock awards made on or after the Listing Date, the
        purchase price shall not be less than eighty-five percent (85%) of
        the stock's Fair Market Value on the date such award is made or at
        the time the purchase is consummated.

    (ii) Consideration. The purchase price of stock acquired pursuant to
         the restricted stock purchase agreement shall be paid either: (i)
         in cash at the time of purchase; (ii) at the discretion of the
         Board, according to a deferred payment or other arrangement with
         the Participant; or (iii) in any other form of legal consideration
         that may be acceptable to the Board in its discretion; provided,
         however, that at any time that the Company is incorporated in
         Delaware, payment of the Common Stock's "par value," as defined in
         the Delaware General Corporation Law, shall not be made by
         deferred payment.

    (iii) Vesting. Subject to the "Repurchase Limitation" in subsection
          11(h), shares of Common Stock acquired under the restricted stock
          purchase agreement may, but need not, be subject to a share
          repurchase option in favor of the Company in accordance with a
          vesting schedule to be determined by the Board.

                                      10
<PAGE>

    (iv) Termination of Participant's Continuous Service. Subject to the
         "Repurchase Limitation" in subsection 11(h), in the event a
         Participant's Continuous Service terminates, the Company may
         repurchase or otherwise reacquire any or all of the shares of
         Common Stock held by the Participant which have not vested as of
         the date of termination under the terms of the restricted stock
         purchase agreement.

    (v) Transferability. Except to the extent permitted by law, for a
        restricted stock award made before the Listing Date, rights to
        acquire shares under the restricted stock purchase agreement shall
        not be transferable except by will or by the laws of descent and
        distribution and shall be exercisable during the lifetime of the
        Participant only by the Participant. For a restricted stock award
        made on or after the Listing Date, rights to acquire shares under
        the restricted stock purchase agreement shall be transferable by
        the Participant only upon such terms and conditions as are set
        forth in the restricted stock purchase agreement, as the Board
        shall determine in its discretion, so long as stock awarded under
        the restricted stock purchase agreement remains subject to the
        terms of the restricted stock purchase agreement.

8. Stock Appreciation Rights.

  (a) The Board or Committee shall have full power and authority, exercisable
      in its sole discretion, to grant Stock Appreciation Rights under the
      Plan to Employees or Directors of or Consultants to, the Company or its
      Affiliates. To exercise any outstanding Stock Appreciation Right, the
      holder must provide written notice of exercise to the Company in
      compliance with the provisions of the Stock Award Agreement evidencing
      such right. Except as provided in subsection 5(c), no limitation shall
      exist on the aggregate amount of cash payments the Company may make
      under the Plan in connection with the exercise of a Stock Appreciation
      Right.

  (b) Three types of Stock Appreciation Rights shall be authorized for
      issuance under the Plan:

    (i) Tandem Stock Appreciation Rights. Tandem Stock Appreciation Rights
        will be granted appurtenant to an Option (other than an Incentive
        Stock Option), and shall, except as specifically set forth in this
        Section 8, be subject to the same terms and conditions applicable
        to the particular Option grant to which it pertains. Tandem Stock
        Appreciation Rights will require the holder to elect between the
        exercise of the underlying Option for shares of stock and the
        surrender, in whole or in part, of such Option for an appreciation
        distribution. The appreciation distribution payable on the
        exercised Tandem Right shall be in cash (or, if so provided, in an
        equivalent number of shares of stock based on Fair Market Value on
        the date of the Option surrender) in an amount up to the excess of
        (A) the Fair Market Value (on the date of the Option surrender) of
        the number of shares of stock covered by that portion of the
        surrendered Option in which the Optionholder is vested over (B) the
        aggregate exercise price payable for such vested shares.

    (ii) Concurrent Stock Appreciation Rights. Concurrent Rights will be
         granted appurtenant to an Option and may apply to all or any
         portion of the shares of stock subject to the underlying Option
         and shall, except as specifically set forth in this Section 8, be
         subject to the same terms and conditions applicable to the
         particular Option grant to which it pertains. A Concurrent Right
         shall be exercised automatically at the same time the underlying
         Option is exercised with respect to the particular shares of stock
         to which the Concurrent Right pertains. The appreciation
         distribution payable on an exercised Concurrent Right shall be in
         cash (or, if so provided, in an equivalent number of shares of
         stock based on Fair Market Value on the date of the exercise of
         the Concurrent Right) in an amount equal to such portion as shall
         be determined by the Board or the Committee at the time of the
         grant of the excess of (A) the aggregate Fair Market Value (on the
         date of the exercise of the Concurrent Right) of the vested shares
         of stock purchased under the underlying Option which have
         Concurrent Rights appurtenant to them over (B) the aggregate
         exercise price paid for such shares.


                                      11
<PAGE>

    (iii) Independent Stock Appreciation Rights. Independent Rights will be
          granted independently of any Option and shall, except as
          specifically set forth in this Section 8, be subject to the same
          terms and conditions applicable to Nonstatutory Stock Options as
          set forth in Section 6. They shall be denominated in share
          equivalents. The appreciation distribution payable on the
          exercised Independent Right shall be not greater than an amount
          equal to the excess of (A) the aggregate Fair Market Value (on
          the date of the exercise of the Independent Right) of a number of
          shares of Company stock equal to the number of share equivalents
          in which the holder is vested under such Independent Right, and
          with respect to which the holder is exercising the Independent
          Right on such date, over (B) the aggregate Fair Market Value (on
          the date of the grant of the Independent Right) of such number of
          shares of Company stock. The appreciation distribution payable on
          the exercised Independent Right shall be in cash or, if so
          provided, in an equivalent number of shares of stock based on
          Fair Market Value on the date of the exercise of the Independent
          Right.

9. Covenants of the Company.

  (a) Availability of Shares. During the terms of the Stock Awards, the
      Company shall keep available at all times the number of shares of
      Common Stock required to satisfy such Stock Awards.

  (b) Securities Law Compliance. The Company shall seek to obtain from each
      regulatory commission or agency having jurisdiction over the Plan such
      authority as may be required to grant Stock Awards and to issue and
      sell shares of Common Stock upon exercise of the Stock Awards;
      provided, however, that this undertaking shall not require the Company
      to register under the Securities Act the Plan, any Stock Award or any
      stock issued or issuable pursuant to any such Stock Award. If, after
      reasonable efforts, the Company is unable to obtain from any such
      regulatory commission or agency the authority which counsel for the
      Company deems necessary for the lawful issuance and sale of stock under
      the Plan, the Company shall be relieved from any liability for failure
      to issue and sell stock upon exercise of such Stock Awards unless and
      until such authority is obtained.

10. Use of Proceeds from Stock.

  Proceeds from the sale of stock pursuant to Stock Awards shall constitute
  general funds of the Company.

11. Miscellaneous.

  (a) Acceleration of Exercisability and Vesting. The Board shall have the
      power to accelerate the time at which a Stock Award may first be
      exercised and/or the time during which a Stock Award or any part
      thereof will vest in accordance with the Plan, notwithstanding the
      provisions in the Stock Award stating the time at which it may first be
      exercised or the time during which it will vest.

  (b) Stockholder Rights. No Participant shall be deemed to be the holder of,
      or to have any of the rights of a holder with respect to, any shares
      subject to an Option unless and until such Participant has satisfied
      all requirements for exercise of the Option pursuant to its terms.

  (c) No Employment or Other Service Rights. Nothing in the Plan or any
      instrument executed or Stock Award granted pursuant thereto shall
      confer upon any Participant or other holder of Stock Awards any right
      to continue to serve the Company or an Affiliate in the capacity in
      effect at the time the Stock Award was granted or shall affect the
      right of the Company or an Affiliate to terminate (i) the employment of
      an Employee with or without notice and with or without cause, for any
      reason, (ii) the service of a Consultant pursuant to the terms of such
      Consultant's agreement with the Company or an Affiliate or (iii) the
      service of a Director pursuant to the Bylaws of the Company or an
      Affiliate, and any applicable provisions of the corporate law of the
      state in which the Company or the Affiliate is incorporated, as the
      case may be.

                                      12
<PAGE>

  (d) Incentive Stock Option $100,000 Limitation. To the extent that the
      aggregate Fair Market Value (determined at the time of grant) of stock
      with respect to which Incentive Stock Options are exercisable for the
      first time by any Optionholder during any calendar year (under all
      plans of the Company and its Affiliates) exceeds one hundred thousand
      dollars ($100,000), the Options or portions thereof which exceed such
      limit (according to the order in which they were granted) shall be
      treated as Nonstatutory Stock Options.

  (e) Investment Assurances. The Company may require a Participant, as a
      condition of exercising or acquiring stock under any Stock Award, (i)
      to give written assurances satisfactory to the Company as to the
      Participant's knowledge and experience in financial and business
      matters and/or to employ a purchaser representative reasonably
      satisfactory to the Company who is knowledgeable and experienced in
      financial and business matters and that he or she is capable of
      evaluating, alone or together with the purchaser representative, the
      merits and risks of exercising the Stock Award; and (ii) to give
      written assurances satisfactory to the Company stating that the
      Participant is acquiring the stock subject to the Stock Award for the
      Participant's own account and not with any present intention of selling
      or otherwise distributing the stock. The foregoing requirements, and
      any assurances given pursuant to such requirements, shall be
      inoperative if (i) the issuance of the shares upon the exercise or
      acquisition of stock under the Stock Award has been registered under a
      then currently effective registration statement under the Securities
      Act or (ii) as to any particular requirement, a determination is made
      by counsel for the Company that such requirement need not be met in the
      circumstances under the then applicable securities laws. The Company
      may, upon advice of counsel to the Company, place legends on stock
      certificates issued under the Plan as such counsel deems necessary or
      appropriate in order to comply with applicable securities laws,
      including, but not limited to, legends restricting the transfer of the
      stock.

  (f) Withholding Obligations. To the extent provided by the terms of a Stock
      Award Agreement, the Participant may satisfy any federal, state or
      local tax withholding obligation relating to the exercise or
      acquisition of stock under a Stock Award by any of the following means
      (in addition to the Company's right to withhold from any compensation
      paid to the Participant by the Company) or by a combination of such
      means: (i) tendering a cash payment; (ii) authorizing the Company to
      withhold shares from the shares of the Common Stock otherwise issuable
      to the Participant as a result of the exercise or acquisition of stock
      under the Stock Award; or (iii) delivering to the Company owned and
      unencumbered shares of the Common Stock.

  (g) Information Obligation. Prior to the Listing Date, to the extent
      required by Section 260.140.46 of Title 10 of the California Code of
      Regulations, the Company shall deliver financial statements to
      Participants at least annually. This subsection 11(g) shall not apply
      to key Employees whose duties in connection with the Company assure
      them access to equivalent information.

  (h) Repurchase Limitation. The terms of any repurchase option shall be
      specified in the Stock Award and may be either at Fair Market Value at
      the time of repurchase or at not less than the original purchase price.
      To the extent required by Section 260.140.41 and Section 260.140.42 of
      Title 10 of the California Code of Regulations, any repurchase option
      contained in a Stock Award granted prior to the Listing Date to a
      person who is not an Officer, Director or Consultant shall be upon the
      terms described below:

    (i) Fair Market Value. If the repurchase option gives the Company the
        right to repurchase the shares upon termination of employment at
        not less than the Fair Market Value of the shares to be purchased
        on the date of termination of Continuous Service, then (i) the
        right to repurchase shall be exercised for cash or cancellation of
        purchase money indebtedness for all but not less than all of the
        shares within ninety (90) days of termination of Continuous Service
        (or in the case of shares issued upon exercise of Stock Awards
        after such date of termination, within ninety (90) days after the
        date of the exercise) or such longer period as may be agreed to by
        the Company and the

                                      13
<PAGE>

       Participant (for example, for purposes of satisfying the requirements
       of Section 1202(c)(3) of the Code regarding "qualified small business
       stock") and (ii) the right terminates when the shares become publicly
       traded.

    (ii) Original Purchase Price. If the repurchase option gives the Company
         the right to repurchase the shares upon termination of Continuous
         Service at the original purchase price, then (i) the right to
         repurchase at the original purchase price shall lapse at the rate
         of at least twenty percent (20%) of the shares per year over five
         (5) years from the date the Stock Award is granted (without respect
         to the date the Stock Award was exercised or became exercisable)
         and (ii) the right to repurchase shall be exercised for cash or
         cancellation of purchase money indebtedness for all but not less
         than all of the shares within ninety (90) days of termination of
         Continuous Service (or in the case of shares issued upon exercise
         of Options after such date of termination, within ninety (90) days
         after the date of the exercise) or such longer period as may be
         agreed to by the Company and the Participant (for example, for
         purposes of satisfying the requirements of Section 1202(c)(3) of
         the Code regarding "qualified small business stock").

12. Adjustments upon Changes in Stock.

  (a) Capitalization Adjustments to Stock Subject to the Plan. If any change
      is made in the stock subject to the Plan due to a change in corporate
      capitalization and without the receipt of consideration by the Company
      (through reincorporation, stock dividend, stock split, reverse stock
      split, combination or reclassification of shares), the Plan will be
      appropriately adjusted in the class(es) and maximum number of
      securities subject to the Plan pursuant to subsection 4(a). Such
      adjustments shall be made by the Board, the determination of which
      shall be final, binding and conclusive.

  (b) Capitalization and Transaction Adjustments to Outstanding Stock
      Awards. If any change is made in the stock subject to any outstanding
      Stock Award without the receipt of consideration by the Company
      (through merger, consolidation, reorganization, recapitalization,
      reincorporation, separation, stock dividend, dividend in property other
      than cash, stock split, reverse stock split, liquidating dividend,
      combination of shares, exchange of shares, change in corporate
      structure or other transaction not involving the receipt of
      consideration by the Company), such outstanding Stock Awards shall be
      appropriately adjusted in the classes and number of securities and
      price per share of stock subject to such outstanding Stock Awards. Such
      adjustments shall be made by the Board, the determination of which
      shall be final, binding and conclusive.

  (c) Capitalization and Transaction Adjustments (Section 162(m)). If any
      change is made in the stock subject to the Plan, or subject to any
      Stock Award, without the receipt of consideration by the Company
      (through merger, consolidation, reorganization, recapitalization,
      reincorporation, separation, stock dividend, dividend in property other
      than cash, stock split, reverse stock split, liquidating dividend,
      combination of shares, exchange of shares, change in corporate
      structure or other transaction not involving the receipt of
      consideration by the Company), the Plan will be appropriately adjusted
      in the maximum number of securities subject to award to any person
      pursuant to subsection 5(c). (The conversion of any convertible
      securities of the Company shall not be treated as a transaction
      "without receipt of consideration" by the Company.) Such adjustments
      shall be made by the Board, the determination of which shall be final,
      binding and conclusive.

  (d) Change in Control--Dissolution or Liquidation. In the event of a
      dissolution or liquidation of the Company, then such Stock Awards shall
      be terminated if not exercised (if applicable) prior to such event.

  (e) Change in Control--Asset Sale, Merger, Consolidation or Reverse
      Merger. In the event of (1) a sale of all or substantially all of the
      assets of the Company, (2) a merger or consolidation in which the
      Company is not the surviving corporation or (3) a reverse merger in
      which the Company is the

                                       14
<PAGE>

     surviving corporation but the shares of Common Stock outstanding
     immediately preceding the merger are converted by virtue of the merger
     into other property, whether in the form of securities, cash or
     otherwise, then any surviving corporation or acquiring corporation shall
     assume or continue any Stock Awards outstanding under the Plan or shall
     substitute similar stock awards (including an award to acquire the same
     consideration paid to the stockholders in the transaction described in
     this subsection 12(e) for those outstanding under the Plan. In the event
     any surviving corporation or acquiring corporation refuses to assume or
     continue such Stock Awards or to substitute similar stock awards for
     those outstanding under the Plan, then with respect to Stock Awards held
     by Participants whose Continuous Service has not terminated, the vesting
     of such Stock Awards (and, if applicable, the time during which such
     Stock Awards may be exercised) shall be accelerated in full prior to
     such event, and the Stock Awards shall terminate if not exercised (if
     applicable) at or prior to such event. With respect to any other Stock
     Awards outstanding under the Plan, such Stock Awards shall terminate if
     not exercised (if applicable) prior to such event.

  (f) Change in Control--Securities Acquisition. After the Listing Date, in
      the event of an acquisition by any person, entity or group within the
      meaning of Section 13(d) or 14(d) of the Exchange Act, or any
      comparable successor provisions (excluding any employee benefit plan,
      or related trust, sponsored or maintained by the Company or an
      Affiliate) of the beneficial ownership (within the meaning of Rule 13d-
      3 promulgated under the Exchange Act, or comparable successor rule) of
      securities of the Company representing at least fifty percent (50%) of
      the combined voting power entitled to vote in the election of
      Directors, then with respect to Stock Awards held by Participants whose
      Continuous Service has not terminated, the vesting of such Stock Awards
      (and, if applicable, the time during which such Stock Awards may be
      exercised) shall be accelerated in full.

13. Amendment of the Plan and Stock Awards.

  (a) Amendment of Plan. The Board at any time, and from time to time, may
      amend the Plan. However, except as provided in Section 12 relating to
      adjustments upon changes in stock, no amendment shall be effective
      unless approved by the stockholders of the Company to the extent
      stockholder approval is necessary to satisfy the requirements of
      Section 422 of the Code, Rule 16b-3 or any NASDAQ or securities
      exchange listing requirements.

  (b) Stockholder Approval. The Board may, in its sole discretion, submit any
      other amendment to the Plan for stockholder approval, including, but
      not limited to, amendments to the Plan intended to satisfy the
      requirements of Section 162(m) of the Code and the regulations
      thereunder regarding the exclusion of performance-based compensation
      from the limit on corporate deductibility of compensation paid to
      certain executive officers.

  (c) Contemplated Amendments. It is expressly contemplated that the Board
      may amend the Plan in any respect the Board deems necessary or
      advisable to provide eligible Employees with the maximum benefits
      provided or to be provided under the provisions of the Code and the
      regulations promulgated thereunder relating to Incentive Stock Options
      and/or to bring the Plan and/or Incentive Stock Options granted under
      it into compliance therewith.

  (d) No Impairment of Rights. Rights under any Stock Award granted before
      amendment of the Plan shall not be impaired by any amendment of the
      Plan unless (i) the Company requests the consent of the Participant and
      (ii) the Participant consents in writing.

  (e) Amendment of Stock Awards. The Board at any time, and from time to
      time, may amend the terms of any one or more Stock Awards; provided,
      however, that the rights under any Stock Award shall not be impaired by
      any such amendment unless (i) the Company requests the consent of the
      Participant and (ii) the Participant consents in writing.

                                      15
<PAGE>

14. Termination or Suspension of the Plan.

  (a) Plan Term. The Board may suspend or terminate the Plan at any time.
      Unless sooner terminated, the Plan shall terminate on the day before
      the tenth (10th) anniversary of the date the Plan is adopted by the
      Board or approved by the stockholders of the Company, whichever is
      earlier. No Stock Awards may be granted under the Plan while the Plan
      is suspended or after it is terminated. Notwithstanding the foregoing,
      all Incentive Stock Options shall be granted, if at all, no later than
      the last day preceding the tenth (10th) anniversary of the earlier of
      (i) the date on which the latest increase in the maximum number of
      shares issuable under the Plan was approved by the stockholders of the
      Company or (ii) the date such amendment was adopted by the Board.

  (b) No Impairment of Rights. Rights and obligations under any Stock Award
      granted while the Plan is in effect shall not be impaired by suspension
      or termination of the Plan, except with the written consent of the
      Participant.

15. Effective Date of Plan.

  The Plan shall become effective as of the date on which it is adopted by
  the Board, but no Stock Award shall be exercised (or, in the case of a
  stock bonus, shall be granted) unless and until the Plan has been approved
  by the stockholders of the Company, which approval shall be within twelve
  (12) months before or after the date the Plan is adopted by the Board.

16. Choice of Law.

  All questions concerning the construction, validity and interpretation of
  this Plan shall be governed by the law of the State of California, without
  regard to such state's conflict of laws rules.

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