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                                                                     EXHIBIT 4.3

                            SILICON INVESTOR, INC.

                                1996 STOCK PLAN

     1.   Purposes of the Plan. The purposes of this 1996 Stock Plan are to
attract and retain the best available personnel for positions of substantial
responsibility, to provide additional incentive to Employees and Consultants of
the Company and its Subsidiaries and to promote the success of the Company's
business. Options granted under the Plan may be incentive stock options (as
defined under Section 422 of the Code) or nonstatutory stock options, as
determined by the Administrator at the time of grant of an option and subject to
the applicable provisions of Section 422 of the Code, as amended, and the
regulations promulgated thereunder. Stock purchase rights may also be granted
under the Plan.

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

                    (a)  "Administrator" means the Board or any of its
               Committees appointed pursuant to Section 4 of the Plan.

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

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

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

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

                    (f)  "Company" means Silicon Investor, Inc., a Delaware
               corporation.

                    (g)  "Consultant" means any person, including an advisor,
               who is engaged by the Company or any Parent or Subsidiary to
               render services and is compensated for such services, and any
               director of the Company whether compensated for such services or
               not.

                    (h)  "Continuous Status as an Employee or Consultant" means
               the absence of any interruption or termination of service as an
               Employee or Consultant. Continuous Status as an Employee or
               Consultant shall not be considered interrupted in the case of (i)
               sick leave; (ii) military leave-(iii) any other leave of absence
               approved by the Administrator, provided that such leave is for a
               period of not more than ninety (90) days, unless reemployment
               upon the expiration of such leave is guaranteed by contract or
               statute, or unless provided otherwise pursuant to Company policy
               adopted from time to time; or (iv) in the case of transfers
               between locations of the Company or between the Company, its
               Subsidiaries or their respective successors. For purposes of this
               Plan, a change in
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               status from an Employee to a Consultant or from a Consultant to
               an Employee will not constitute an interruption of Continuous
               Status as an Employee or Consultant.

                    (i)  "Employee" means any person, including officers and
               directors, employed by the Company or any Parent or Subsidiary of
               the Company, with the status of employment determined based upon
               such minimum number of hours or periods worked as shall be
               determined by the Administrator in its discretion, subject to any
               requirements of the Code. The payment by the Company of a
               director's fee to a Director shall not be sufficient to
               constitute "employment" of such Director by the Company.

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

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

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

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

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

                    (l)  "Incentive Stock Option" means an Option intended to
               qualify as an incentive stock option within the meaning of
               Section 422 of the Code, as designated in the applicable written
               option agreement.

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                    (m)  "Nonstatutory Stock Option" means an Option not
               intended to qualify as an Incentive Stock Option, as designated
               in the applicable written option agreement.

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

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

                    (p)  "Optionee" means an Employee or Consultant who receives
               an Option or a Stock Purchase Right.

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

                    (r)  "Plan," means this 1996 Stock Plan.

                    (s)  "Reporting Person" means an officer, director, or
               greater than ten percent stockholder of the Company within the
               meaning of Rule 16a-2 under the Exchange Act, who is required to
               file reports pursuant to Rule l6a-3 under the Exchange Act.

                    (t)  "Restricted Stock" means shares of Common Stock
               acquired pursuant to a grant of a Stock Purchase Right under
               Section 10 below.

                    (u)  "Rule 16b-3" means Rule 16b-3 promulgated under the
               Exchange Act, as the same may be amended from time to time, or
               any successor provision.

                    (v)  "Share" means a share of the Common Stock, as adjusted
               in accordance with Section 12 of the Plan.

                    (w)  "Stock Exchange" means any stock exchange or
               consolidated stock price reporting system on which prices for the
               Common Stock are quoted at any given time.

                    (x)  "Stock Purchase Right" means the right to purchase
               Common Stock pursuant to Section 10 below.

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

     3.   Stock Subject to the Plan.  Subject to the provisions of Section 12 of
the Plan, the maximum aggregate number of Shares that may be optioned and sold
under the Plan is 1,500,000 shares of Common Stock. The Shares may be
authorized, but unissued, or reacquired Common Stock. If an Option should expire
or become unexercisable for any reason without having been exercised in full,
the unpurchased Shares that were subject thereto shall, unless the Plan shall
have

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been terminated, become available for future grant under the Plan. In addition,
any Shares of Common Stock which are retained by the Company upon exercise of an
Option or Stock Purchase Right in order to satisfy the exercise or purchase
price for such Option or Stock Purchase Right or any withholding taxes due with
respect to such exercise shall be treated as not issued and shall continue to be
available under the Plan. Shares repurchased by the Company pursuant to any
repurchase right which the Company may have shall not be available for future
grant under the Plan.

     4.   Administration of the Plan.

                    (a)  Initial Plan Procedure. Prior to the date, if any, upon
               which the Company becomes subject to the Exchange Act, the Plan
               shall be administered by the Board or a committee appointed by
               the Board.

                    (b)  Plan Procedure After the Date, if any, Upon Which the
               Company Becomes Subject to the Exchange Act.

                           (i)    Multiple Administrative Bodies. If permitted
                     by Rule 16b-3, grants under the Plan may be made by
                     different bodies with respect to directors, non-director
                     officers and Employees or Consultants who are not Reporting
                     Persons.

                           (ii)   Administration With Respect to Reporting
                     Persons. With respect to grants of Options or Stock
                     Purchase Rights to Employees who are Reporting Persons,
                     such grants shall be made by (A) the Board if the Board may
                     make grants to Reporting Persons under the Plan in
                     compliance with Rule 16b-3, or (B) a committee designated
                     by the Board to make such grants under the Plan, which
                     committee shall be constituted in such a manner as to
                     permit grants under the Plan to comply with Rule 16b-3.
                     Once appointed, such committee shall continue to serve in
                     its designated capacity until otherwise directed by the
                     Board. From time to time the Board may increase the size of
                     the committee and appoint additional members thereof,
                     remove members (with or without cause) and appoint new
                     members in substitution therefor, fill vacancies, however
                     caused, and remove all members of the committee and
                     thereafter directly make grants to Reporting Persons under
                     the Plan, all to the extent permitted by Rule 16b-3.

                         (iii)    Administration With Respect to Consultants and
                     Other Employees. With respect to grants of Options or Stock
                     Purchase Rights to Employees or Consultants who are not
                     Reporting Persons, the Plan shall be administered by (A)
                     the Board or (B) a committee designated by the Board, which
                     committee shall be constituted in such a manner as to
                     satisfy the legal requirements relating to the
                     administration of incentive stock option plans, if any, of
                     California corporate and securities laws, of the Code and
                     of any applicable Stock Exchange (the "Applicable Laws").
                     Once appointed, such Committee shall continue to serve in
                     its

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                     designated capacity until otherwise directed by the Board.
                     From time to time the Board may increase the size of the
                     Committee and appoint additional members thereof, remove
                     members (with or without cause) and appoint new members in
                     substitution therefor, fill vacancies, however caused, and
                     remove all members of the Committee and thereafter directly
                     administer the Plan, all to the extent permitted by the
                     Applicable Laws.

                    (c)  Powers of the Administrator. Subject to the provisions
               of the Plan and in the case of a Committee, the specific duties
               delegated by the Board to such Committee, and subject to the
               approval of any relevant authorities, including the approval, if
               required, of any Stock Exchange, the Administrator shall have the
               authority, in its discretion:

                           (i)    to determine the Fair Market Value of the
                     Common Stock, in accordance with Section 2(k) of the Plan;

                           (ii)   to select the Consultants and Employees to
                     whom Options and Stock Purchase Rights may from time to
                     time be granted hereunder,

                           (iii)  to determine whether and to what extent
                     Options and Stock Purchase Rights or any combination
                     thereof are granted hereunder,

                           (iv)   to determine the number of shares of Common
                     Stock to be covered by each such award granted hereunder;

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

                           (vi)   to determine the terms and conditions, not
                     inconsistent with the terms of the Plan, of any award
                     granted hereunder;

                           (vii)  to determine whether and under what
                     circumstances an Option may be settled in cash under
                     Section 9(f) instead of Common Stock;

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

                           (ix)   to determine the terms and restrictions
                     applicable to Stock Purchase Rights and the Restricted
                     Stock purchased by exercising such Stock Purchase Rights,
                     and

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

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                           (xi)   in order to fulfill the purposes of the Plan
                     and without amending the Plan, to modify grants of Options
                     or Stock Purchase Rights to participants who are foreign
                     nationals or employed outside of the United States in order
                     to recognize differences in local law, tax policies or
                     customs.

                    (d)  Effect of Administrator's Decision. All decisions,
               determinations and interpretations of the Administrator shall be
               final and binding on all holders of Options or Stock Purchase
               Rights.

     5.   Eligibility.

                    (a)  Recipients of Grants. Nonstatutory Stock Options and
               Stock Purchase Rights may be granted to Employees and
               Consultants. Incentive Stock Options may be granted only to
               Employees. An Employee or Consultant who has been granted an
               Option or Stock Purchase Right may, if he or she is otherwise
               eligible, be granted additional Options or Stock Purchase Rights.

                    (b)  Type of Option. Each Option shall be designated in the
               written option agreement as either an incentive Stock Option or a
               Nonstatutory Stock Option. However, notwithstanding such
               designations, to the extent that the aggregate Fair Market Value
               of Shares with respect to which Options designated as Incentive
               Stock Options are exercisable for the first time by any Optionee
               during any calendar year (under all plans of the Company or any
               Parent or Subsidiary) exceeds $100,000, such excess Options shall
               be treated as Nonstatutory Stock Options. For purposes of this
               Section 5(b), Incentive Stock Options shall be taken into account
               in the order in which they were granted, and the Fair Market
               Value of the Shares subject to an Incentive Stock Option shall be
               determined as of the date of the grant of such Option.

                    (c)  The Plan shall not confer upon any Optionee any right
               with respect to continuation of employment or consulting
               relationship with the Company, nor shall it interfere in any way
               with such Optionee's right or the Company's right to terminate
               his or her employment or consulting relationship at any time,
               with or without cause.

     6.   Term of Plan.  The Plan shall become  effective  upon the earlier to
occur of its adoption by the Board of Directors or its approval by the
stockholders of the Company as described in Section 19 of the Plan. It shall
continue in effect for a term of ten (IO) years unless sooner terminated under
Section 15 of the Plan.

     7.   Term of 0ption.  The term of each Option shall be the term stated in
the Option Agreement; provided, however, that the term shall be no more than ten
(10) years from the date of grant thereof or such shorter term as may be
provided in the Option Agreement and provided further that, in the case of an
Incentive Stock Option granted to an Optionee who, at the time the Option is
granted, owns stock representing more than ten percent (10%) of the total
combined voting power of

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all classes of stock of the Company or any Parent or Subsidiary, the term of the
Option shall be five (5) years from the date of grant thereof or such shorter
term as may be provided in the written option agreement.

     8.   Option Exercise Price and Consideration.

                    (a)  The per share exercise price for the Shares to be
               issued pursuant to exercise of an Option shall be such price as
               is determined by the Board and set forth in the applicable
               agreement, but shall be subject to the following:

                              (i)  In the case of an Incentive Stock Option that
                     is:

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

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

                              (ii) In the case of a Nonstatutory Stock Option
                     that is:

                                        (A)  granted to a person who, at the
                                time of the grant of such Option, owns stock
                                representing more than ten percent (10%) of the
                                total combined voting power of all classes of
                                stock of the Company or any Parent or
                                Subsidiary, the per Share exercise price shall
                                be no less than I 10% of the Fair Market Value
                                per Share on the date of the grant.

                                        (B)  granted to any person, the per
                                Share exercise price shall be no less than 85%
                                of the Fair Market Value per Share on the date
                                of grant.

                    (b)  The consideration to be paid for the Shares to be
               issued upon exercise of an Option, including the method of
               payment, shall be determined by the Administrator (and, in the
               case of an Incentive Stock Option, shall be determined at the
               time of grant) and may consist entirely of (1) cash, (2) check,
               (3) promissory note (subject to the provisions of Section 153 of
               the Delaware General Corporation Law), (4) other Shares that (x)
               in the case of Shares acquired upon exercise of an Option, have
               been owned by the Optionee for more than six months on the date
               of surrender or such other period as may be required to avoid a
               charge to the Company's earnings, and (y) have a Fair Market
               Value on the date of surrender equal to the aggregate exercise
               price of the Shares as to which such Option shall be exercised,
               (5) authorization for the Company to retain from the

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               total number of Shares as to which the Option is exercised that
               number of Shares having a Fair Market Value on the date of
               exercise equal to the exercise price for the total number of
               Shares as to which the Option is exercised, (6) delivery of a
               properly executed exercise notice together with such other
               documentation as the Administrator and the broker, if applicable,
               shall require to effect an exercise of the Option and delivery to
               the Company of the sale or loan proceeds required to pay the
               exercise price and any applicable income or employment taxes, (7)
               delivery of an irrevocable subscription agreement for the Shares
               that irrevocably obligates the option holder to take and pay for
               the Shares not more than twelve months after the date of delivery
               of the subscription agreement, (8) any combination of the
               foregoing methods of payment, or (9) such other consideration and
               method of payment for the issuance of Shares to the extent
               permitted under Applicable Laws. In making its determination as
               to the type of consideration to accept, the Administrator shall
               consider if acceptance of such consideration may be reasonably
               expected to benefit the Company.

     9.   Exercise of Option.

                    (a)  Procedure for Exercise; Rights as a Stockholder. Any
               Option granted hereunder shall be exercisable at such times and
               under such conditions as determined by the Administrator, and
               reflected in the written option agreement, which may include
               vesting requirements and/or performance criteria with respect to
               the Company and/or the Optionee; provided that such Option shall
               become exercisable at the rate of at least twenty percent (20%)
               per year over five (5) years from the date the Option is granted.
               In the event that any of the Shares issued upon exercise of an
               Option should be subject to a right of repurchase in the
               Company's favor, such repurchase right shall lapse at the rate of
               at least twenty percent (20%) per year over five (5) years from
               the date the Option is granted. An Option may not be exercised
               for a fraction of a Share.

                    An Option shall be deemed to be exercised when written
               notice of such exercise has been given to the Company in
               accordance with the terms of the Option by the person entitled to
               exercise the Option and the Company has received full payment for
               the Shares with respect to which the Option is exercised. Full
               payment may, as authorized by the Board, consist of any
               consideration and method of payment allowable under Section 8(b)
               of the Plan. Until the issuance (as evidenced by the appropriate
               entry on the books of the Company or of a duly authorized
               transfer agent of the Company) of the stock certificate
               evidencing such Shares, no right to vote or receive dividends or
               any other fights as a stockholder shall exist with respect to the
               Optioned Stock, not withstanding the exercise of the Option. The
               Company shall issue (or cause to be issued) such stock
               certificate promptly upon exercise of the Option. No adjustment
               will be made for a dividend or other fight for which the record
               date is prior to the date the stock certificate is issued, except
               as provided in Section 12 of the Plan.

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

                    (b)  Termination of Employment or Consulting Relationship.
               Subject to Section 9(c), in the event of termination of an
               Optionee's Continuous Status as an Employee or Consultant with
               the Company, such Optionee may, but only within three (3) months
               (or such other period of time not less than thirty (30) days as
               is determined by the Administrator, with such determination in
               the case of an Incentive Stock Option being made at the time of
               grant of the Option and not exceeding three (3) months) after the
               date of such termination (but in no event later than the
               expiration date of the term of such Option as set forth in the
               Option Agreement), exercise his or her Option to the extent that
               the Optionee was entitled to exercise it at the date of such
               termination. To the extent that Optionee was not entitled to
               exercise the Option at the date of such termination, or if
               Optionee does not exercise such Option to the extent so entitled
               within the time specified herein, the Option shall terminate. No
               termination shall be deemed to occur and this Section 9(b) shall
               not apply if (i) the Optionee is a Consultant who becomes an
               Employee; or (ii) the Optionee is an Employee who becomes a
               Consultant.

                    (c)  Disability of Optionee.

                              (i)   Notwithstanding Section 9(b) above, in the
                     event of termination of an Optionee's Continuous Status as
                     an Employee or Consultant as a result of his or her total
                     and permanent disability (within the meaning of Section
                     22(e)(3) of the Code), Optionee may, but only within twelve
                     (12) months from the date of such termination (but in no
                     event later than the expiration date of the term of such
                     Option as set forth in the Option Agreement), exercise the
                     Option to the extent otherwise entitled to exercise it at
                     the date of such termination. To the extent that Optionee
                     was not entitled to exercise the Option at the date of
                     termination, or if Optionee does not exercise such Option
                     to the extent so entitled within the time specified herein,
                     the Option shall terminate.

                              (ii)  In the event of termination of an Optionee's
                     Continuous Status as an Employee or Consultant as a result
                     of a disability which does not fall within the meaning of
                     total and permanent disability (as set forth in Section
                     22(e)(3) of the Code), Optionee may, but only within six
                     (6) months from the date of such termination (but in no
                     event later than the expiration date of the term of such
                     Option as set forth in the Option Agreement), exercise the
                     Option to the extent otherwise entitled to exercise it at
                     the date of such termination. However, to the extent that
                     such Optionee fails to exercise an Option which is an
                     Incentive Stock Option ("ISO") (within the meaning of
                     Section 422 of the Code) within three (3) months of the
                     date of such termination, the Option will not

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                     qualify for ISO treatment under the Code. To the extent
                     that Optionee was not entitled to exercise the Option at
                     the date of termination, or if Optionee does not exercise
                     such Option to the extent so entitled within six months (6)
                     from the date of termination, the Option shall terminate.

                    (d)  Death of 0ptionee. In the event of the death of an
               Optionee during the period of Continuous Status as an Employee or
               Consultant since the date of grant of the Option, or within
               thirty (30) days following termination of Optionee's Continuous
               Status as an Employee or Consultant, the Option may be exercised,
               at any time within six (6) months following the date of death
               (but in no event later than the expiration date of the term of
               such Option as set forth in the Option Agreement), by Optionee's
               estate or by a person who acquired the right to exercise the
               Option by bequest or inheritance, but only to the extent of the
               right to exercise that had accrued at the date of death or, if
               earlier, the date of termination of Optionee's Continuous Status
               as an Employee or Consultant. To the extent that Optionee was not
               entitled to exercise the Option at the date of death or
               termination, as the case may be, or if Optionee does not exercise
               such Option to the extent so entitled within the time specified
               herein, the Option shall terminate.

                    (e)  Rule 16b-3. Options granted to Reporting Persons shall
               comply with Rule 16b-3 and shall contain such additional
               conditions or restrictions as may be required thereunder to
               qualify for the maximum exemption for Plan transactions.

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

     10.  Stock Purchase Rights.

                    (a)  Rights to Purchase.  Stock Purchase Rights may be
               issued either alone, in addition to, or in tandem with other
               awards granted under the Plan and/or cash awards made outside of
               the Plan, After the Administrator determines that it will offer
               Stock Purchase Rights under the Plan, it shall advise the offeree
               in writing of the terms, conditions and restrictions related to
               the offer, including the number of Shares that such person shall
               be entitled to purchase, the price to be paid (which price shall
               not be less than 85% of the Fair Market Value of the Shares as of
               the date of the offer, or, in the case of a person owning stock
               representing more than ten percent (10%) of the total combined
               voting power of all classes of stock of the Company or any Parent
               or Subsidiary, the price shall not be less than one hundred
               percent (100%) of the Fair Market Value of the Shares as of the
               date of the offer), and the time within which such person must
               accept such offer, which shall in no event exceed thirty (30)
               days from the date upon which the Administrator made the
               determination to grant the Stock Purchase Right. The offer shall
               be accepted by execution of a Restricted Stock purchase agreement
               in the form determined by the Administrator. Shares purchased

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               pursuant to the grant of a Stock Purchase Right shall be referred
               to herein as "Restricted Stock."

                    (b)  Repurchase Option. Unless the Administrator determines
               otherwise, the Restricted Stock purchase agreement shall grant
               the Company a repurchase option exercisable upon the voluntary or
               involuntary termination of the purchaser's employment with the
               Company for any reason (including death or disability). The
               purchase price for Shares repurchased pursuant to the Restricted
               Stock purchase agreement shall be the original purchase price
               paid by the purchaser and may be paid by cancellation of any
               indebtedness of the purchaser to the Company. The repurchase
               option shall lapse at such rate as the Administrator may
               determine, but at a minimum rate of 20% per year.

                    (c)  Other Provisions. The Restricted Stock purchase
               agreement shall contain such other terms, provisions and
               conditions not inconsistent with the Plan as may be determined by
               the Administrator in its sole discretion. In addition, the
               provisions of Restricted Stock purchase agreements need not be
               the same with respect to each purchaser.

                    (d)  Rights as a Stockholder. Once the Stock Purchase Right
               is exercised, the purchaser shall have the rights equivalent to
               those of a stockholder, and shall be a stockholder when his or
               her purchase is entered upon the records of the duly authorized
               transfer agent of the Company. No adjustment will be made for a
               dividend or other right for which the record date is prior to the
               date the Stock Purchase Right is exercised, except as provided in
               Section 12 of the Plan.

     11.  Stock Withholding to Satisfy Withholding Tax Obligations. At the
discretion of the Administrator, Optionees may satisfy withholding obligations
as provided in this paragraph. When an Optionee incurs tax liability in
connection with an Option or Stock Purchase Right, which tax liability is
subject to tax withholding under applicable tax laws, and the Optionee is
obligated to pay the Company an amount required to be withheld under applicable
tax laws, the Optionee may satisfy the withholding tax obligation by one or some
combination of the following methods: (a) by cash payment, or (b) out of
Optionee's current compensation, (c) if permitted by the Administrator, in its
discretion, by surrendering to the Company Shares that (i) in the case of Shares
previously acquired from the Company, have been owned by the Optionee for more
than six months on the date of surrender, and (ii) have a fair market value on
the date of surrender equal to or less than Optionee's marginal tax rate times
the ordinary income recognized, or (d) by electing to have the Company withhold
from the Shares to be issued upon exercise of the Option, or the Shares to be
issued in connection with the Stock Purchase Right, if any, that number of
Shares having a fair market value equal to the amount required to be withheld.
For this purpose, the fair market value of the Shares to be withheld shall be
determined on the date that the amount of tax to be withheld is to be determined
(the "Tax Date").

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     Any surrender by a Reporting Person of previously owned Shares to satisfy
tax withholding obligations arising upon exercise of this Option must comply
with the applicable provisions of Rule 16b-3.

     All elections by an Optionee to have Shares withheld to satisfy tax
withholding obligations shall be made in writing in a form acceptable to the
Administrator and shall be subject to the following restrictions:

                    (a)  the election must be made on or prior to the applicable
               Tax Date;

                    (b)  once made, the election shall be irrevocable as to the
               particular Shares of the Option or Stock Purchase Right as to
               which the election is made; and

                    (c)  all elections shall be subject to the consent or
               disapproval of the Administrator.

     In the event the  election to have Shares  withheld is made by an Optionee
and the Tax Date is deferred under Section 83 of the Code because no election is
filed under Section 83(b) of the Code, the Optionee shall receive the full
number of Shares-with respect to which the Option or Stock Purchase Right is
exercised but such Optionee shall be unconditionally obligated to tender back to
the Company the proper number of Shares on the Tax Date.

     12.  Adjustments Upon Changes in Capitalization, Merger or Certain Other
Transactions.

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

                                                                            -12-
<PAGE>

                    (b)  Dissolution or Liquidation. In the event of the
               proposed dissolution or liquidation of the Company, the Board
               shall notify the Optionee at least fifteen (15) days prior to
               such proposed action. To the extent it has not been previously
               exercised, the Option or Stock Purchase Right will terminate
               immediately prior to the consummation of such proposed action.

                    (c)  Merger or Sale of Assets. In the event of a proposed
               sale of all or substantially all of the Company's assets or a
               merger of the Company with or into another corporation where the
               successor corporation issues its securities to the Company's
               stockholders, each outstanding Option or Stock Purchase Right
               shall be assumed or an equivalent option or right shall be
               substituted by such successor corporation or a parent or
               subsidiary of such successor corporation, unless the successor
               corporation does not agree to assume the Option or Stock Purchase
               Right or to substitute an equivalent option or fight, in which
               case such Option or Stock Purchase Right shall terminate upon the
               consummation of the merger or sale of assets.

                    (d)  Certain Distributions. In the event of any distribution
               to the Company's stockholders of securities of any other entity
               or other assets (other than dividends payable in cash or stock of
               the Company) without receipt of consideration by the Company, the
               Administrator may, in its discretion, appropriately adjust the
               price per share of Common Stock covered by each outstanding
               Option or Stock Purchase Right to reflect the effect of such
               distribution.

     13.  Non-Transferability  of Options and Stock Purchase Rights. Options and
Stock Purchase Rights may not be sold, pledged, assigned, hypothecated,
transferred, or disposed of in any manner other than by will or by the laws of
descent or distribution and may be exercised or purchased during the lifetime of
the Optionee or Stock Purchase Rights Holder only by the Optionee or Stock
Purchase Rights Holder.

     14.  Time of Granting Options and Stock Purchase Rights. The date of grant
of an Option or Stock Purchase Right shall, for all purposes, be the date on
which the Administrator makes the determination granting such Option or Stock
Purchase Right, or such other date as is determined by the Board; provided
however that in the case of any Incentive Stock Option, the grant date shall be
the later of the date on which the Administrator makes the determination
granting such Incentive Stock Option or the date of commencement of the
Optionee's employment relationship with the Company. Notice of the determination
shall be given to each Employee or Consultant to whom an Option or Stock
Purchase Right is so granted within a reasonable time after the date of such
grant.

     15.  Amendment and Termination of the Plan.

                    (a)  Authority to Amend or Terminate. The Board may at any
               time amend, alter, suspend or discontinue the Plan, but no
               amendment, alteration, suspension or discontinuation shall be
               made that would impair the rights of any Optionee under any grant
               theretofore made, without his or her consent. In addition, to the
               extent necessary and desirable to comply with Rule 16b-3 or with
               Section 422 of

                                                                            -13-
<PAGE>

               the Code (or any other applicable law or regulation, including
               the requirements of any Stock Exchange), the Company shall obtain
               stockholder approval of any Plan amendment in such a manner and
               to such a degree as required.

                    (b)  Effect of Amendment or Termination. No amendment or
               termination of the Plan shall adversely affect Options already
               granted, unless mutually agreed otherwise between the Optionee
               and the Board, which agreement must be in writing and signed by
               the Optionee and the Company.

     16.  Conditions Upon Issuance of Shares. Shares shall not be issued
pursuant to the exercise of an Option or Stock Purchase Right unless the
exercise of such Option or Stock Purchase Right and the issuance and delivery of
such Shares pursuant thereto shall comply with all relevant provisions of law,
including, without limitation, the Securities Act of 1933, as amended, the
Exchange Act, the rules and regulations promulgated thereunder, and the
requirements of any Stock Exchange. As a condition to the exercise of an Option,
the Company may require the person exercising such Option to represent and
warrant at the time of any such exercise that the Shares are being purchased
only for investment and without any present intention to sell or distribute such
Shares if, in the opinion of counsel for the Company, such a representation is
required by law.

     17.  Reservation of Shares. The Company, during the term of this Plan, will
at all times reserve and keep available such number of Shares as shall be
sufficient to satisfy the requirements of the Plan. The inability of the Company
to obtain authority from any regulatory body having jurisdiction, which
authority is deemed by the Company's counsel to be necessary to the lawful
issuance and sale of any Shares hereunder, shall relieve the Company of any
liability in respect of the failure to issue or sell such Shares as to which
such requisite authority shall not have been obtained.

     18.  Agreements.  Options and Stock Purchase Rights shall be evidenced by
written agreements in such form as the Administrator shall approve from time to
time.

     19.  Stockholder Approval. Continuance of the Plan shall be subject to
approval by the stockholders of the Company within twelve (12) months before or
after the date the Plan is adopted. Such stockholder approval shall be obtained
in the degree and manner required under applicable state and federal law and the
rules of any Stock Exchange upon which the Common Stock is listed. All Options
and Stock Purchase Rights issued under the Plan shall become void in the event
such approval is not obtained.

     20.  Information and Documents to Optionees and Purchasers. The Company
shall provide financial statements at least annually to each Optionee and to
each individual who acquired Shares Pursuant to the Plan, during the period such
Optionee or purchaser has one or more Options or Stock Purchase Rights
outstanding, and in the case of an individual who acquired Shares pursuant to
the Plan, during the period such individual owns such Shares. The Company shall
not be required to provide such information if the issuance of Options or Stock
Purchase Rights under the Plan is limited to key employees whose duties in
connection with the Company assure their access to equivalent information. In
addition, at the time of issuance of any securities under the Plan, the

                                                                            -14-
<PAGE>

Company shall provide to the Optionee or the Purchaser a copy of the Plan and
any agreement(s) pursuant to which securities under the Plan are issued.

                                                                            -15-<PAGE>

                                                                     EXHIBIT 4.4

                            WEB21 STOCK OPTION PLAN

          1.  Purpose of the Plan. Under this Stock Option Plan (the "Plan") of
WEB21, a California corporation (the "Company"), options may be granted to
eligible employees to purchase shares of the Company's capital stock. The Plan
is designed to enable the Company to attract, retain and motivate its employees
by providing for increasing the proprietary interests of such employees in the
Company. The Plan provides for options which qualify as incentive stock options
("Incentive Options") under Section 422 of the Internal Revenue Code of 1986, as
amended, as well as options which do not so qualify.

          2.  Stock Subject to Plan. The maximum number of shares of stock
subject to this Plan and for which options granted hereunder may therefore be
exercised shall be One Million (1,000,000) shares of the Company's common stock
without par value, subject to the adjustments provided in Sections 6 and 12.
Shares of stock subject to the unexercised portions of any options granted under
this Plan which expire or terminate or are canceled may again be subject to
options under the Plan. When the exercise price for an option granted under this
Plan is paid with previously outstanding shares or with shares as to which the
option is being exercised, as permitted in Section 9, the total number of shares
of stock for which options granted under this Plan may thereafter be exercised
shall be irrevocably reduced by the total number of shares for which such option
is thus exercised, without regard to the number of shares received or retained
by the Company in connection with the exercise.

          3.  Eligible Employees. The employees eligible to be considered for
the grant of options hereunder are any persons regularly employed by the Company
on a full-time basis.

          4.  Minimum Exercise Price. The exercise price for each option granted
hereunder shall be not less than 100% of the Fair Market Value (defined
hereinbelow) of the stock being optioned at the date of the grant of the option.

          5.  Nontransferability. Any option granted under this Plan shall be
its terms be nontransferable by the optionee other than by will or the laws of
descent and distribution and shall be exercisable during the optionee's lifetime
only by the optionee or by the optionee's guardian or legal representative,
except that an option which is not intended to be an Incentive Option may, if
the instrument evidencing it so provides, also be transferable to members of the
optionee's Immediate Family (defined hereinbelow), to a partnership whose
members are only he optionee and/or members of the Optionee's Immediate Family,
or to a trust for the benefit of only the optionee and/or members of the
optionee's Immediate family.

          6.  Adjustments. If the outstanding shares of stock of the class then
subject to this plan are increased or decreased, or are changed into or
exchanged for a different number or kind of shares or securities or other forms
of property (including cash) or rights, as a result of one or more
reorganizations, recapitalizations, spin-offs, stock splits, reverse stock
splits, stock dividends or the like, appropriate adjustments shall be made in
the number and/or kind of shares or securities or other forms of property
(including cash) or rights for which options may thereafter be granted under
this Plan may thereafter be exercised. Any such adjustment in outstanding
options shall be made without changing the aggregate exercise price applicable
to the unexercised portions of such options.
<PAGE>

     In connection with any reorganization, recapitalization, spin-off or other
transaction in which the outstanding shares of stock of the class then subject
to options outstanding under this Plan are changed into or exchanged for
property (including cash), rights and/or securities other than, or in addition
to, stock of the Company's issue, an outstanding option may under this Section
entitled "Adjustments" be adjusted to become exercisable for either: (a) the
property (including cash), rights and/or securities receivable in that
transaction by a holder of the number and king of outstanding shares of stock
subject to the option immediately prior to the transaction; or (b) stock of the
Company or of a successor employer corporation, or a parent or subsidiary
thereof, provided, that (i) such adjustment may preserve but may not increase
any amount by which the Fair Market Value of the stock subject to the option
exceeds the option exercise price, comparing such excess immediately before and
immediately after the transaction, and (ii) such adjustment may preserve but may
not reduce the ratio of the option exercise price to the Fair Market Value of
the stock subject to the option, comparing such ration immediately before and
immediately after the transaction.

          7.  Maximum Option Term. No option granted under this Plan may be
exercised in whole or in part more than ten years after its date of grant.

          8.  Plan Duration. Options may not be granted under this Plan after
ten years after the adoption of the Plan, or stockholder approval thereof,
whichever is earlier.

          9.  Payment. Payment for sock purchased upon any exercise of an option
granted under this Plan shall be made in full in cash (including payment by
check) concurrently with such exercise, except that, if and to the extent the
instrument evidencing the option so provides and the Company is not the
prohibited from purchasing or acquiring shares of such stock, such payment may
be made in whole or in part with shares of the same call of stock as that then
subject to the option, delivered in lieu of cash concurrently with such
exercise, the shares so delivered to be valued on the basis of the Fair Market
Value of the stock on the date of exercise. If and while payment with stock is
permitted for the exercise of an option granted under this Plan in accordance
with the foregoing provision, the instrument evidencing the option may also
permit the person then entitled to exercise that option, in lieu of using
previously outstanding shares therefor, to use some of the shares as to which
the option is then being exercised.

          10. Administration. The Plan shall be administered by the Company's
board of directors (the "Board") or, at the discretion of the Board, by a
committee (the "Committee") of not less than two members of the Board. The
interpretation and construction by the Committee of any term or provision of the
Plan or of any option granted under it, including without limitation any
determination of adjustments required pursuant to Section 6 hereof, shall be
conclusive, unless otherwise determined by the Board in which event such action
by the Board shall be conclusive, and such interpretation and construction shall
be binding upon all those who hold or are eligible to receive options under the
Plan, and all persons claiming under them. The Board or Committee may from time
to time adopt rules and regulations for carrying out this Plan and, subject to
the provisions of this Plan, may prescribe the form or forms of the instruments
evidencing any option granted under this Plan. Subject to the provisions of this
Plan, the Board, or, by delegation from the Board, the Committee, shall have
full and final authority in its discretion to select the employees to be granted

                                                                             -2-
<PAGE>

options, to authorize granting such options and to determine the number of
shares to be subject thereto, the exercise prices, the terms of exercise,
expiration dates and other pertinent provision thereof.

     11.  Other Option Provisions. Options granted under this Plan shall contain
such other terms and provisions which are not inconsistent with this Plan as the
Board or Committee may authorize, including but not limited to (a) vesting
schedules governing the exercisability of such options, (b) provisions for
acceleration of such vesting schedules in certain events, (c) arrangements
whereby the Company may fulfill any tax withholding obligations it may have in
connection with the exercise of such options, (d) provisions imposing
restrictions upon the transferability of stock acquired on exercise of such
option, whether required by this Plan or applicable securities laws or imposed
for other reasons, and (e) provisions regarding the termination or survival of
any such option upon the optionee's death, retirement of other terminations of
employment and the extent, if any, to which any such option may be exercised
after such event. Incentive Options shall contain the terms an provisions
required of them under the Internal Revenue Code.

     12.  Corporate Reorganizations. Upon the dissolution or liquidation of the
Company, or upon a reorganization, merger or consolidation of the Company as a
result of which the outstanding securities of the class then subject to options
hereunder are changed into or exchanged for property (including cash), rights or
securities not of the Company's issue, or any combination thereof, or upon a
sale of substantially all the property of the Company to, or the acquisition of
stock representing more than eighty percent (80%) of the voting power of the
stock of the Company then outstanding by, another corporation or person, the
Plan shall terminate, and all options theretofore granted hereunder shall
terminate, unless provision be made in writing in connection with such
transaction for the continuance of the Plan and/or for the assumption of options
theretofore granted, or the substitution for such option of options covering the
stock of a successor employer corporation, or a parent or a subsidiary thereof,
with appropriate adjustments in accordance with Section 6 hereof as to the
number and kind of shares optioned and their exercise prices, in which event the
Plan and options theretofore granted shall continue in the manner and under the
terms so provided. The instrument evidencing any option may also provide for the
acceleration of otherwise unexercisable portions of the option (a) if the option
shall terminate pursuant to the foregoing sentence, such acceleration to become
effective at such time prior to the consummation of the transaction causing such
termination as the Company shall designate, and (b) upon other specified events
or occurrences, such as involuntary terminations of the option holder's
employment following certain changes in the control of the Company.

     13.  Financial Assistance. The Company is vested with authority under this
Plan to assist any employee to whom an option is granted hereunder (including
any director or officer of the Company or any of its subsidiaries who is also an
employee) in the payment of the purchase price payable on exercise of that
option, by lending the amount of such purchase price to such employee on such
terms and at such rates of interest and upon such security (or unsecured) as
shall have been authorized by or under authority of the Board.

     14.  Company's Right of First Purchase. While and so long as the stock of
the class subject to this Plan has not been Publicly Traded for at least ninety
days, any stock issued on exercise of any option granted under the Plan shall be
subject to the Company's right of first purchase. By virtue of

                                                                             -3-
<PAGE>

that right, (a) such stock may not be transferred during the optionee's lifetime
to any person other than members of the optionee's Immediate Family, a
partnership whose members are the optionee and/or members of the optionee's
Immediate Family, or a trust for the benefit of the optionee and/or members of
the optionee's Immediate Family, unless such transfer occurs within fifteen days
following the expiration of thirty days after the Company has been given a
written notice which correctly identified the prospective transferee or
transferees and which offered the Company an opportunity to purchase such stock
at its Fair Market Value in cash, and such offer was not accepted within thirty
days after the Company's receipt of the notice; and (b) upon the optionee's
death, the Company shall have the right to purchase all or some of such stock at
its Fair Market Value within nine months after the date of death. This right of
first purchase shall continue to apply to any such stock after the transfer
during the optionee's lifetime of that stock to a member of the optionee's
Immediate Family or to a family partnership or trust as aforesaid, and after any
transfer of that stock with respect to which the Company expressly waived its
right of first purchase without also waiving it as to any subsequent transfers
thereof, but it shall not apply after a transfer of that stock with respect to
which the Company was offered but did not exercise or waive its right of first
purchase or more than nine months after the death. The Company may assign all or
any portion of its right of first purchase to any one or more of its
stockholders, or to a pension or retirement plan or trust for employees of the
Company, who may then exercise the right so assigned. Stock certificates
evidencing stock subject to this right of first purchase shall be appropriately
legended to reflect that right.

   15.   Limitations of Rights of Participants.

                    (a)  A person to whom an option is granted under this Plan
      shall not have any interest in the optioned shares or in any dividends
      paid thereon, and shall not have any of the rights or privileges of a
      stockholder with respect to such shares, until the certificates therefor
      have been issued and delivered to him or her.

                    (b)  No shares of stock issuable under the Plan shall be
      issued and no certificate therefor delivered unless and until, in the
      opinion of legal counsel for the Company, such securities may be issued
      and delivered without causing the Company to be in violation of or to
      incur any liability under any federal, state or other securities law, or
      any other requirement of law or of any regulatory body having jurisdiction
      over the Company.

                    (c)  The receipt of an option does not give the optionee any
      right to continued employment by the Company or a subsidiary for any
      period, nor shall the granting of the option or the issuance of shares on
      exercise thereof give the Company or any subsidiary any right to the
      continued services of the optionee for any period.

                    (d)  Nothing contained in this Plan shall constitute the
      granting of an option hereunder, which shall occur only pursuant to
      express authorization by the Board or the Committee.

   16. Amendment and Termination. The Board may alter, amend, suspend or
terminate this Plan, provided that no such action shall deprive an optionee who
has not consented thereto of any option granted to the optionee pursuant to this
Plan or of any of the optionee's rights under such

                                                                             -4-
<PAGE>

option. Except as herein provided, no such action of the Board, unless taken
with the approval of the stockholders of the Company, may:

          (a)  increase the maximum number of shares for which options granted
      under this Plan may be exercised; (b) reduce the minimum permissible
      exercise price; (c) extend the ten-year duration of the Plan set forth
      herein; (d) alter the class of employees eligible to receive options under
      the Plan; or (e) amend the Plan in any other manner which the Board, in
      its discretion, determines should become effective only if approved by the
      stockholders even though such stockholder approval is not expressly
      required by this Plan.

     17. Certain Definitions. The terms "Board," "Committee," and "Incentive
Options" have been defined hereinabove. In addition, as used in this Plan, the
following terms shall have the following meanings:

          (a)  The "Fair Market Value" of corporate stock shall mean:

                    (1)  If the stock is then Publicly Trades: The closing price
          of stock of that class as of the day in question (or, if such day is
          not a trading day in the principal securities market or markets for
          such stock, on the nearest preceding trading day), as reported with
          respect to the market (or the composite of markets, if more than one)
          in which shares of such stock are then traded, or, if no such closing
          prices are reported, on the basis of the mean between the high bid and
          low asked prices that day on the principal market or quotation system
          on which shares of such stock are then quoted, or, if not so quoted,
          as furnished by a professional securities dealer making a market in
          such stock selected by the Board or the Committee.

                    (2)  If the stock is then not Publicly Traded: The price at
          which one could reasonably expect such stock to be sold in an arm's
          length transaction, for cash, other than on an installment basis, to a
          person not employed by, controlled by, in control of or under common
          control with the issuer of such stock. Such Fair Market Value shall be
          that which has currently or most recently been determined for this
          purpose by the Board, or at the discretion of the Board by an
          independent appraiser or appraisers selected by the Board, in either
          case giving due consideration to recent transactions involving shares
          of such stock, if any, the issuer's net worth, prospective earning
          power and dividend-paying capacity, the goodwill of the issuer's
          business, the issuer's industry position and its management, that
          industry's economic outlook, the values of securities of issuers whose
          stock is Publicly Traded and which are engaged in similar businesses,
          the effect of transfer restrictions to which such stock may be subject
          under law and under the applicable terms of any contract governing
          such stock, the absence of a public market for such stock and such
          other matters as the Board or its appraiser or appraisers of the Fair
          Market Value shall, if not unreasonable, be conclusive and binding
          notwithstanding the possibility that other person might make a
          different, and also reasonable, determination. If the Fair Market
          Value to be used was thus fixed more than sixteen months prior to the
          day as of which Fair Market

                                                                             -5-
<PAGE>

          Value is being determined, it shall in any event be no less than the
          book value of the stock being valued at the end of the most recent
          period for which financial statements of the issuer are available.

          (b) An individual's "Immediate Family" includes only his or her
      spouse, parents or other ancestors, and children and other direct
      descendants of that individual or of his or her spouse (including such
      ancestors and descendants by adoption).

          (c) Corporate stock is "Publicly Traded" if stock of that class is
      listed or admitted to unlisted trading privileges on a national securities
      exchange or designated as a national market system security on an
      interdealer quotation system by the National Association of Securities
      Dealers, Inc. ("NASD") or if sales or bid and offer quotations are
      reported for that class of stock in the automated quotation system
      ("NASDAQ") operated by the NASD.

                                                                             -6-

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