LYNUXWORKS INC
S-1, EX-10.3, 2000-10-25
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<PAGE>

                                                                    Exhibit 10.3

                     LYNX REAL-TIME SYSTEMS, INCORPORATED

                                1992 STOCK PLAN


     1.   Purposes of the Plan.  The purposes of this 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 non-statutory 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 paragraph (a) of Section 4 of the Plan.

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

          (f) "Company" means Lynx Real-Time Systems, Incorporated, a California
               -------
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 provided that if and in the event the
Company registers any class of any equity security pursuant to the Exchange Act,
the term Consultant shall thereafter not include directors who are not
compensated for their services or are paid only a director's fee by the Company.
<PAGE>

          (h) "Continuous Status as an Employee" means the absence of any
               --------------------------------
interruption or termination of the employment relationship by the Company or any
Subsidiary.  Continuous Status as an Employee shall not be considered
interrupted in the case of:  (i) sick leave; (ii) military leave; (iii) any
other leave of absence approved by the Board, 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 its successor.

          (i) "Employee" means any person, including officers and directors,
               --------
employed by the Company or any Parent or Subsidiary of the Company.  The payment
of a director's fee by the Company shall not be sufficient to constitute
"employment" 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 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 System 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 System 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 and low asked prices for the Common Stock 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.

                                      -2-
<PAGE>

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

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

          (o) "Optioned Stock" means the Common Stock subject to an Option.
               --------------

          (p) "Optionee" means an Employee or Consultant who receives an Option.
               --------

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

          (r) "Plan" means this 1992 Stock Plan.
               ----

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

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

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

     3.   Stock Subject to the Plan.  Subject to the provisions of Section 13 of
          -------------------------
the Plan, the maximum aggregate number of shares which may be optioned and sold
under the Plan is 3,981,274 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 which were subject
thereto shall, unless the Plan shall have been terminated, become available for
future grant under the Plan.

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

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

               (i)  Administration With Respect to Directors and Officers.  With
                    -----------------------------------------------------
respect to grants of Options or Stock Purchase Rights to Employees who are also
officers or directors of the Company, the Plan shall be administered by (A) the
Board if the Board may administer the Plan in compliance with Rule 16b-3
promulgated under the Exchange Act or any successor thereto

                                      -3-
<PAGE>

("Rule 16b-3") with respect to a plan intended to qualify thereunder as a
discretionary plan, or (B) a Committee designated by the Board to administer the
Plan, which Committee shall be constituted in such a manner as to permit the
Plan to comply with Rule 16b-3 with respect to a plan intended to qualify
thereunder as a discretionary plan. 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 administer the
Plan, all to the extent permitted by Rule 16b-3 with respect to a plan intended
to qualify thereunder as a discretionary plan.

          (ii)  Multiple Administrative Bodies.  If permitted by Rule 16b-3, the
                ------------------------------
Plan may be administered by different bodies with respect to directors, non-
director officers and Employees who are neither directors nor officers.

          (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 neither directors nor officers of the Company, 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 and of the Code (the
"Applicable Laws").  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 administer the Plan, all to the extent
permitted by the Applicable Laws.

      (b) 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, 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 officers, Consultants and Employees to whom
Options and Stock Purchase Rights may from time to time be granted hereunder;

                                      -4-
<PAGE>

          (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 (including, but not
limited to, the share price and any restriction or limitation, or waiver of
forfeiture restrictions regarding any Option or other award and/or the shares of
Common Stock relating thereto, based in each case on such factors as the
Administrator shall determine, in its sole discretion);

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

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

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

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

     5.   Eligibility.
          -----------

          (a) Nonstatutory Stock Options 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 may, if he is otherwise
eligible, be granted an additional Option or Options.

          (b) 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 the

                                      -5-
<PAGE>

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.

          (c) For purposes of 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 shall be determined as of the time the Option with respect
to such Shares is granted.

          (d) 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 his right or the Company's right to terminate
his 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
shareholders of the Company as described in Section 19 of the Plan.  It shall
continue in effect for a term of ten (10) years unless sooner terminated under
Section 15 of the Plan.

     7.   Term of Option.  The term of each Option shall be the term stated in
          --------------
the Option Agreement; provided, however, that in the case of an Incentive Stock
Option, 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.
However, in the case of an Option granted to an Optionee who, at the time the
Option is granted, owns stock representing more than ten percent (10%) of the
voting power of all classes of stock of the Company or any Parent or Subsidiary,
the 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 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, but
shall be subject to the following:

              (i)  In the case of an Incentive Stock Option

                         (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 voting power of all classes of stock of the Company or any
Parent or Subsidiary, the

                                      -6-
<PAGE>

per Share exercise price shall be no less than 110% of the Fair Market Value per
Share on the date of grant.

                         (B) granted to any Employee, 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

                      (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 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 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, (4) other Shares which (x) in the case of Shares
acquired upon exercise of an Option either have been owned by the Optionee for
more than six months on the date of surrender or were not acquired, directly or
indirectly, from the Company, and (y) have a Fair Market Value on the date of
surrender equal to the aggregate exercise price of the Shares as to which said
Option shall be exercised, (5) authorization from the Company to retain from the
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 irrevocable instructions to
a broker to promptly deliver to the Company the amount of sale or loan proceeds
required to pay the exercise price, (7) by delivering an irrevocable
subscription agreement for the Shares which 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, (9) or 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 Board shall
consider if acceptance of such consideration may be reasonably expected to
benefit the Company (Section 315(b) of the California Corporation law).

                                      -7-
<PAGE>

     9.   Exercise of Option.
          ------------------

          (a) Procedure for Exercise; Rights as a Shareholder. Any Option
              -----------------------------------------------
granted hereunder shall be exercisable at such times and under such conditions
as determined by the Board, including performance criteria with respect to the
Company and/or the Optionee, and as shall be permissible under the terms of the
Plan.

              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 full payment for the
Shares with respect to which the Option is exercised has been received by the
Company. 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 rights as a shareholder shall exist with respect to the Optioned Stock,
notwithstanding the exercise of the Option. The Company shall issue (or cause to
be issued) such stock certificate promptly upon exercise of the Option. No
adjustment will be made for a dividend or other right for which the record date
is prior to the date the stock certificate is issued, except as provided in
Section 11 of the Plan.

              Exercise of an Option in any manner shall result in a decrease in
the number of Shares which 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. In the event of termination of an
              -------------------------
Optionee's consulting relationship or Continuous Status as an Employee with the
Company (as the case may be), such Optionee may, but only within ninety (90)
days (or such other period of time as is determined by the Board, with such
determination in the case of an Incentive Stock Option being made at the time of
grant of the Option and not exceeding ninety (90) days) 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 Option to the extent
that 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.

                                      -8-
<PAGE>

          (c) Disability of Optionee.  Notwithstanding the provisions of Section
              ----------------------
9(b) above, in the event of termination of an Optionee's Consulting relationship
or Continuous Status as an Employee as a result of his total and permanent
disability (as defined in 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.

          (d) Death of Optionee.  In the event of the death of an Optionee, the
              -----------------
Option may be exercised, at any time within twelve (12) 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 the Optionee's estate or
by a person who acquired the right to exercise the Option by bequest or
inheritance, but only to the extent the Optionee was entitled to exercise the
Option at the date of death.  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.

          (e) Rule 16b-3.  Options granted to persons subject to Section 16(b)
              ----------
of the Exchange Act must comply with Rule 16b-3 and shall contain such
additional conditions or restrictions as may be required thereunder to qualify
for the maximum exemption from Section 16 of the Exchange Act with respect to
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.  Non-Transferability of Options.  The Option may not be sold, pledged,
          ------------------------------
assigned, hypothecated, transferred, or disposed of in any manner other than by
will or by the laws of descent or distribution and may be exercised, during the
lifetime of the Optionee, only by the Optionee.

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

          (a) Rights to Purchase.  Stock Purchase Rights may be issued either
              ------------------
alone, in addition to, or in tandem with other awards granted under the Plan
and/or cash awards made outside of the Plan.

                                      -9-
<PAGE>

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 100% of Fair Market Value of the Shares as of the date of offer in
the case of any offeree who owns, either at the time of the grant of a right or
at the consummation of its purchase, stock possessing more than ten percent
(10%) of the total combined voting power of all classes of stock of Company or
its subsidiaries), 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 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 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 Committee
may determine.

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

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

     12.  Stock Withholding to Satisfy Withholding Tax Obligations.  At the
          --------------------------------------------------------
discretion of the Administrator, Optionees may satisfy

                                      -10-
<PAGE>

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
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. 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").

     All elections by an Optionee to have Shares withheld for this purpose 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 Right as to which the election is made;

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

          (d) if the Optionee is subject to Rule 16b-3, the election must comply
with the applicable provisions of Rule 16b-3 and shall be subject to such
additional conditions or restrictions as may be required thereunder to qualify
for the maximum exemption from Section 16 of the Exchange Act with respect to
Plan transactions.

     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.

     13.  Adjustments Upon Changes in Capitalization or Merger. Subject to any
          ----------------------------------------------------
required action by the shareholders of the Company, the number of shares of
Common Stock covered by each outstanding Option, and the number of shares of
Common Stock which have been authorized for issuance under the Plan but as to
which no Options have yet been granted or which have been returned to the Plan
upon

                                      -11-
<PAGE>

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

          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 will terminate immediately prior to the consummation of such proposed
action.  In the event of a merger of the Company with or into another
corporation, the Option shall be assumed or an equivalent option shall be
substituted by such successor corporation or a parent or subsidiary of such
successor corporation.

     14.  Time of Granting Options.  The date of grant of an Option shall, for
          ------------------------
all purposes, be the date on which the Administrator makes the determination
granting such Option, or such other date as is determined by the Board.  Notice
of the determination shall be given to each Employee or Consultant to whom an
Option is so granted within a reasonable time after the date of such grant.

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

          (a) Amendment and Termination.  The Board may at any time amend,
              -------------------------
alter, suspend or discontinue the Plan, but no amendment, alteration, suspension
or discontinuation shall be made which 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 under the Exchange
Act or with Section 422 of the Code (or any other applicable law or regulation,
including the requirements of the NASD or an established stock exchange), the
Company shall obtain shareholder approval of any Plan amendment in such a manner
and to such a degree as required.

                                      -12-
<PAGE>

          (b) Effect of Amendment or Termination.  Any such amendment or
              ----------------------------------
termination of the Plan shall not affect Options already granted and such
Options shall remain in full force and effect as if this Plan had not been
amended or terminated, 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 unless the exercise of such Option 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 upon which the Shares may
then be listed, and shall be further subject to the approval of counsel for the
Company with respect to such compliance.

          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 any of
the aforementioned relevant provisions of 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 Board shall approve from time to time.

     19.  Shareholder Approval.  Continuance of the Plan shall be subject to
          --------------------
approval by the shareholders of the Company within twelve (12) months before or
after the date the Plan is adopted.  Such shareholder approval shall be obtained
in the degree and manner required under applicable state and federal law.

                                      -13-
<PAGE>

     20.  Information to Optionees.  The Company shall at least annually provide
          ------------------------
to each Optionee, during the period for which such Optionee has one or more
Options outstanding, a balance sheet and income statement.  The Company shall
not be required to provide such information to key employees whose duties in
connection with the Company assure their access to equivalent information.

                                      -14-
<PAGE>

                     LYNX REAL-TIME SYSTEMS, INCORPORATED

                         NOTICE OF STOCK OPTION GRANT



     You have been granted an option to purchase Common Stock of Lynx Real-Time
Systems, Incorporated (the "Company") as follows:

     Grant Number                            _____________________________

     Date of Grant                           _____________________________

     Vesting Commencement Date               _____________________________

     Option Price Per Share                  $
                                             -----------------------------

     Total Number of Shares Granted          _____________________________

     Total Price of Shares Granted           $
                                             -----------------------------

     Type of Option:                    ___ Incentive Stock Option
                                        ___ Nonstatutory Stock Option

     Term/Expiration Date:              _________________

     Exercise Schedule:
     -----------------

     This Option may be exercised, in whole or in part, in accordance with the
Vesting Schedule set out below.

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

     On the first anniversary of the Vesting Commencement Date (as set forth
above) the option shall become exercisable as to twenty-five percent (25%) of
the total number of shares granted (as set forth above); thereafter, the option
shall become exercisable to the extent of one forty-eighth (1/48th) of the total
number of shares granted for each month that has expired from the Vesting
Commencement Date.

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

____________________

*    Note that for California permit plans, vesting must occur at a rate of no
     less than 20% per year.
<PAGE>

     Option may be exercised for 90 days after termination of employment or
consulting relationship except as set out in Sections 7 and 8 of the Stock
Option Agreement (but in no event late than the Expiration Date).

     By your signature and the signature of the Company's representative below,
you and the Company agree that this option is granted under and governed by the
terms and conditions of the 1992 Stock Plan and the Stock Option Agreement, all
of which are attached and made a part of this document.

Optionee:                                    Lynx Real-Time Systems,
                                             Incorporated


_______________________________              By: _______________________________
Signature


_______________________________              Title: ____________________________
Print Name

                                      -2-
<PAGE>

                     LYNX REAL-TIME SYSTEMS, INCORPORATED

                       INCENTIVE STOCK OPTION AGREEMENT

     1.   Grant of Option.  Lynx Real-Time Systems, Incorporated, a California
          ---------------
corporation (the "Company"), hereby grants to the Optionee named in the Notice
of Grant (the "Optionee"), an option (the "Option") to purchase a total number
of shares of Common Stock (the" Shares") set forth in the Notice of Grant, at
the exercise price per share set forth in the Notice of Grant (the "Exercise
Price") subject to the terms, definitions and provisions of the 1992 Stock Plan
(the "Plan") adopted by the Company, which is incorporated herein by reference.
Unless otherwise defined herein, the terms defined in the Plan shall have the
same defined meanings in this Option.

          This Option is designated an Incentive Stock Option and is intended to
qualify as an Incentive Stock Option as defined in Section 422 of the Code.

     2.   Exercise of Option. This Option shall be exercisable during its term
          ------------------
in accordance with the Exercise Schedule set out in the Notice of Grant and with
the provisions of Section 9 of the Plan as follows:

          (i)  Right to Exercise.
               -----------------

               (a)  This Option may not be exercised for a fraction of a share.

               (b)  In the event of Optionee's death, disability or other
termination of employment, the exercisability of the Option is governed by
Sections 6, 7 and 8 below, subject to the limitation contained in subsection
2(i) (c).

               (c)  In no event may this Option be exercised after the date of
expiration of the term of this Option as set forth in the Notice of Grant.

          (ii) Method of Exercise. This Option shall be exercisable by written
               ------------------
notice (in the form attached as Exhibit A) which shall state the election to
exercise the Option, the number of Shares in respect of which the Option is
being exercised, and such other representations and agreements as to the
holder's investment intent with respect to such shares of Common Stock as may be
required by the Company pursuant to the provisions of the Plan. Such written
notice shall be signed by the Optionee and shall be delivered in person or by
certified mail to the Secretary of the Company. The written notice shall be
accompanied by payment of the Exercise Price. This Option shall be deemed to be
exercised



<PAGE>

upon receipt by the Company of such written notice accompanied by the Exercise
Price.

          No Shares will be issued pursuant to the exercise of an Option unless
such issuance and such exercise shall comply with all relevant provisions of law
and the requirements of any stock exchange upon which the Shares may then be
listed. Assuming such compliance, for income tax purposes the Shares shall be
considered transferred to the Optionee on the date on which the Option is
exercised with respect to such Shares.

     3.  Optionee's Representations. In the event the Shares purchasable
         --------------------------
pursuant to the exercise of this Option have not been registered under the
Securities Act of 1933, as amended, at the time this Option is exercised,
Optionee shall, if required by the Company, concurrently with the exercise of
all or any portion of this Option, deliver to the Company his Investment
Representation Statement in the form attached hereto as Exhibit B, and shall
read the applicable rules of the Commissioner of Corporations attached to such
Investment Representation Statement.

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

          i.   cash; or

          ii.  check; or

          iii. surrender of other shares of Common Stock of the Company which
(A) either have been owned by the Optionee for more than six (6) months on the
date of surrender or were not acquired, directly or indirectly, from the
Company and (B) have a fair market value on the date of surrender equal to the
Exercise Price of the Shares as to which the Option is being exercised; or

          iv.  delivery of a promissory note (the "Note") of Optionee in the
amount of the Exercise Price together with the execution and delivery by the
Optionee of the Security Agreement attached hereto as Exhibit C. The Note shall
be in the form attached hereto as Exhibit D, shall contain the terms and be
payable as set forth herein, shall bear interest at a rate no less than the
"applicable federal rate" prescribed under the Code and its regulations at time
of purchase, and shall be secured by a pledge of the Shares purchased by the
Note pursuant to the Security Agreement.

                                      -2-
<PAGE>

     5.   Restrictions on Exercise.  This Option may not be exercised until such
          ------------------------
time as the Plan has been approved by the shareholders of the Company, or if the
issuance of such Shares upon such exercise or the method of payment of
consideration for such shares would constitute a violation of any applicable
federal or state securities or other law or regulation, including any rule under
Part 207 of Title 12 of the Code of Federal Regulations ("Regulations G") as
promulgated by the Federal Reserve Board. As a condition to the exercise of this
Option, the Company may require Optionee to make any representation and warranty
to the Company as may be required by any applicable law or regulation.

     6.   Termination of Relationship. In the event of termination of Optionee's
          ---------------------------
consulting relationship or Continuous Status as an Employee, Optionee may, to
the extent otherwise so entitled at the date of such termination (the
"Termination Date"), exercise this Option during the Termination Period set out
in the Notice of Grant. To the extent that Optionee was not entitled to exercise
this Option at the date of such termination, or if Optionee does not exercise
this Option within the time specified herein, the Option shall terminate.

     7.   Disability of Optionee. Notwithstanding the provisions of Section 6
          ----------------------
above, in the event of termination of Optionee's Continuous Status as an
Employee as a result of total and permanent disability (as defined in Section 22
(e) (3) of the Code), Optionee may, but only within twelve (12) months from the
date of termination of employment (but in no event later than the date of
expiration of the term of this Option as set forth in Section 10 below),
exercise the Option to the extent otherwise so entitled 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 otherwise so entitled) within the time specified herein, the Option shall
terminate.

     8.   Death of Optionee. In the event of the death of Optionee, the Option
          -----------------
may be exercised at any time within twelve (12) months following the date of
death (but in no event later than the date of expiration of the term of this
Option as set forth in Section 10 below), 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 the Optionee could exercise the Option at the date of death.

     9.   Non-Transferability of Option. This Option may not be transferred in
          -----------------------------
any manner otherwise than by will or by the laws of descent or distribution and
may be exercised during the lifetime of

                                      -3-

<PAGE>

Optionee only by him. The terms of this Option shall be binding upon the
executors, administrators, heirs, successors and assigns of the Optionee.

     10.  Term of Option. This Option may be exercised only within the terms set
          --------------
out in the Notice of Grant, and may be exercised during such term only in
accordance with the Plan and the terms of this Option. The limitations set out
in Section 7 of the Plan regarding Options designated as Incentive Stock Options
and Options granted to more than ten percent (10%) shareholders shall apply to
this Option.

     11.  Tax Consequences. Set forth below is a brief summary as of the date of
          ----------------
this Option of some of the federal and California tax consequences of exercise
of this Option and disposition of the Shares. THIS SUMMARY IS NECESSARILY
INCOMPLETE, AND THE TAX LAWS AND REGULATIONS ARE SUBJECT TO CHANGE. OPTIONEE
SHOULD CONSULT A TAX ADVISER BEFORE EXERCISING THIS OPTION OR DISPOSING OF THE
SHARES.

          (i)   Exercise of ISO. This Option is intended to qualify as an ISO.
                ---------------
There is be no regular federal income tax liability or California income tax
liability upon the exercise of an ISO, although the excess, if any, of the fair
market value of the Shares on the date of exercise over the Exercise Price will
be treated as an adjustment to the alternative minimum tax for federal tax
purposes and may subject the Optionee to the alternative minimum tax in the year
of exercise.

          (ii)  Disposition of Shares. If Shares transferred pursuant to an ISO
                ---------------------
are held for at least one year after exercise and are disposed of at least two
years after the Date of Grant, any gain realized on disposition of the Shares
will be treated as long-term capital gain for federal and California income tax
purposes. If Shares purchased under an ISO are disposed of within such one-year
period or within two years after the Date of Grant, any gain realized on such
disposition will be treated as compensation income (taxable at ordinary income
rates) to the extent of the excess, if any, of the fair market value of the
Shares on the date of exercise over the Exercise Price.

          (iii) Notice of Disqualifying Disposition of ISO Shares. If Optionee
                -------------------------------------------------
sells or otherwise disposes of any of the Shares acquired pursuant to this
Option on or before the later of (1) the date two years after the Date of Grant,
or (2) the date one year after transfer of such Shares to the Optionee upon
exercise of the Option, the Optionee shall immediately notify the Company in

                                      -4-

<PAGE>

writing of such disposition. Optionee agrees that Optionee may be subject to
income tax withholding by the Company on the

                                      -5-

<PAGE>

compensation income recognized by the Optionee from the early disposition by
payment in cash or out of the current earnings paid to the Optionee.

                                           Lynx Real-Time Systems, Incorporated,
                                           a California corporation


                                           By:__________________________________

                                           Title:_______________________________

     OPTIONEE ACKNOWLEDGES AND AGREES THAT THE VESTING OF SHARES PURSUANT TO THE
OPTION HEREOF IS EARNED ONLY BY CONTINUING CONSULTANCY OR EMPLOYMENT AT THE WILL
OF THE COMPANY (NOT THROUGH THE ACT OF BEING HIRED, BEING GRANTED THIS OPTION OR
ACQUIRING SHARES HEREUNDER). OPTIONEE FURTHER ACKNOWLEDGES AND AGREES THAT
NOTHING IN THIS AGREEMENT, NOR IN THE COMPANY'S STOCK OPTION PLAN WHICH IS
INCORPORATED HEREIN BY REFERENCE, SHALL CONFER UPON OPTIONEE ANY RIGHT WITH
RESPECT TO CONTINUATION OF EMPLOYMENT OR CONSULTANCY BY THE COMPANY, NOR SHALL
IT INTERFERE IN ANY WAY WITH HIS RIGHT OR THE COMPANY'S RIGHT TO TERMINATE HIS
EMPLOYMENT OR CONSULTANCY AT ANY TIME, WITH OR WITHOUT CAUSE.

     Optionee acknowledges receipt of a copy of the Plan and certain information
related thereto and represents that he is familiar with the terms and provisions
thereof, and herby accepts this Option subject to all of the terms and
provisions thereof. Optionee has reviewed the Plan and this Option in their
entirety, has had an opportunity to obtain the advice of counsel prior to
executing this Option and fully understands all provisions of the Option.
Optionee hereby agrees to accept as binding, conclusive and final all decisions
or interpretations of the Board upon any questions arising under the Plan.


Date:_____________________         ____________________________________________
                                   Optionee

                                      -6-
<PAGE>

 Exercise Notice
1992 Stock Plan

                                   EXHIBIT A
                                   ---------

                  EXERCISE NOTICE FOR INCENTIVE STOCK OPTIONS
                  -------------------------------------------

Lynx Real-Time Systems, Incorporated
2239 Samaritan Drive
San Jose, CA 95124

Attention: Secretary

     1.   Exercise of Option. Effective as of today, ___________, 19__, the
          ------------------
undersigned ("Optionee") hereby elects to exercise Optionee's option to purchase
              --------
_____________ shares of the Common Stock (the "Shares") of Lynx Real-Time
                                               ------
Systems, Incorporated (the "Company") under and pursuant to the Company's 1992
                            -------
Stock Plan (the "Plan") and the Incentive Stock Option Agreement dated _________
                 ----
(the "Option Agreement").
      ----------------

     2.   Representations of Optionee. Optionee acknowledges that Optionee has
          ---------------------------
received, read and understood the Plan and the Option Agreement and agrees to
abide by and be bound by their terms and conditions. Optionee represents that
Optionee is purchasing the Shares for Optionee's own account for investment and
not with a view to, or for sale in connection with, a distribution of any of
such Shares.

     3.   Compliance with Securities Laws. Optionee understands and acknowledges
          -------------------------------
that the Shares have not been registered under the Securities Act of 1933, as
amended (the "1933 Act"), and, notwithstanding any other provision of the Option
              --------
Agreement to the contrary, the exercise of any rights to purchase any Shares is
expressly conditioned upon compliance with the 1933 Act, all applicable state
securities laws and all applicable requirements of any stock exchange or over
the counter market on which the Company's Common Stock may be listed or traded
at the time of exercise and transfer. Optionee agrees to cooperate with the
Company to ensure compliance with such laws.

     4.   Federal Restrictions on Transfer. Optionee understands that the Shares
          --------------------------------
have not been registered under the 1933 Act and therefore cannot be resold and
must be held indefinitely unless they are registered under the 1933 Act or
unless an exemption from such registration is available and that the
certificate(s) representing the Shares may bear a legend to that effect.
Optionee understands that the Company is under no obligation to register the
Shares and that an exemption may not be available or may not permit Optionee to
transfer Shares in the amounts or at the times proposed by Optionee.
Specifically, Optionee has been advised that Rule 144 promulgated under the 1933
Act, which permits certain resales of


<PAGE>

unregistered securities, is not presently available with respect to the Shares
and, in any event requires that the Shares be paid for and then be held for at
least two years (and in some cases three years) before they may be resold under
Rule 144.

     5.   Rights as Shareholder. Subject to the terms and conditions of this
          ---------------------
Agreement, Optionee shall have all of the rights of a shareholder of the Company
with respect to the Shares from and after the date that Optionee delivers full
payment of the Exercise Price until such time as Optionee disposes of the Shares
or the Company and/or its assignee(s) exercises the Right of First Refusal
hereunder and pays the Purchase Price as set forth in Section 6(d) hereof. Upon
such exercise, Optionee shall have no further rights as a holder of the Shares
so purchased, and Optionee shall forthwith cause the certificate(s) evidencing
the Shares so purchased to be surrendered to the Company for transfer or
cancellation.

     6.   Company's Right of First Refusal. Before any Shares held by Optionee
          --------------------------------
or any transferee (either being sometimes referred to herein as the "Holder")
                                                                     ------
may be sold or otherwise transferred (including transfer by gift or operation of
law), the Company or its assignee(s) shall have a right of first refusal to
purchase the Shares on the terms and conditions set forth in this Section (the
"Right of First Refusal").
 ----------------------

     (a)  Notice of Proposed Transfer. The Holder of the Shares shall deliver to
          ---------------------------
the Company a written notice (the "Notice") stating: (i) the Holder's bona fide
                                   ------
intention to sell or otherwise transfer such Shares; (ii) the name of each
proposed purchaser or other transferee ("Proposed Transferee"); (iii) the number
                                         -------------------
of Shares to be transferred to each Proposed Transferee; and (iv) the bona fide
cash price or other consideration for which the Holder proposes to transfer the
Shares (the "Offered Price"), and the Holder shall offer the Shares at the
             -------------
Offered Price to the Company or its assignee(s).

     (b)  Exercise of Right of First Refusal. At any time within thirty (30)
          ----------------------------------
days after receipt of the Notice, the Company and/or its assignee(s) may, by
giving written notice to the Holder, elect to purchase all, but not less than
all, of the Shares proposed to be transferred to any one or more of the Proposed
Transferees, at the purchase price determined in accordance with subsection (c)
below. Notwithstanding the foregoing, if there is more than one Proposed
Transferee, and if the Notice states that no Shares will be sold to a particular
Proposed Transferee unless a specified number of other Shares are simultaneously
sold to one or more other specifically identified Proposed Transferees (all of

                                      -2-

<PAGE>
such Shares that will not be sold other than simultaneously collectively
referred to as the "Related Shares"), the Company and/or its assignee(s) may not
elect to purchase fewer than all of the Related Shares.

     (c)  Purchase Price. The purchase price ("Purchase Price") for the Shares
          --------------                       --------------
purchased by the Company or its assignee(s) under this Section shall be the
Offered Price. If the Offered Price includes consideration other than cash, the
cash equivalent value of the non-cash consideration shall be determined by the
Board of Directors of the Company in good faith.

     If the Holder or Holder's executor disputes the price as set by the Board
of Directors by giving notice to the Company within ten (10) days after being
informed of the price, the price of the Shares shall be determined by an
independent financial analyst selected by the Board of Directors of the Company
and acceptable to the Holder, with the cost of such determination to be divided
equally between the Company and the Holder. The Board of Directors shall select
such analyst within thirty (30) days after receipt of notice that the Holder is
disputing the price set by the Board of Directors. If the Board is not notify of
any such dispute within such ten (10) day period, the decision of the Board of
Directors as to the purchase price shall be final. Any time required to
determine a purchase price or to resolve a dispute shall be added to the thirty
(30) days period in which the Company may exercise its right to purchase.

     (d)  Payment. Payment of the Purchase Price shall be made, at the option of
          -------
the Company or its assignee(s), in cash (by check), by cancellation of all or a
portion of any outstanding indebtedness of the Holder to the Company (or, in the
case of repurchase by an assignee, to the assignee), or by any combination
thereof within 30 days after receipt to the Notice or in the manner and at the
times set forth in the Notice.

     (e)  Holder's Right to Transfer. If all of the Shares proposed in the
          --------------------------
Notice to be transferred to all of the Proposed Transferees are not purchased by
the Company and/or its assignee(s) as provided in this Section, then the Holder
may sell or otherwise transfer such Shares to such Proposed Transferees at the
Offered Price or at a higher price, provided that such sale or other transfer is
consummated within 120 days after the date of the Notice and provided further
that any such sale or other transfer is effected in accordance with any
applicable securities laws and the Proposed Transferees agree in writing that
the provisions of this Section shall continue to apply to the Shares in the
hands of such Proposed Transferees. If the Shares described in the Notice are
not trans-

                                      -3-

<PAGE>

ferred to the Proposed Transferees within such period, a new Notice shall be
given to the Company, and the Company and/or its assignees shall again be
offered the Right of First Refusal before any Shares held by the Holder may be
sold or otherwise transferred.

     (f)  Exception for Certain Family Transfers. Anything to the contrary
          --------------------------------------
contained in this Section notwithstanding, the transfer of any or all of the
Shares during the Optionee's lifetime or on the Optionee's death by will or
intestacy to the Optionee's immediate family or a trust for the benefit of the
Optionee's immediate family shall be exempt from the provisions of this Section.
"Immediate Family" as used herein shall mean spouse, lineal descendant or
 ----------------
antecedent, farther, mother, brother or sister. In such case, the transferee or
other recipient shall receive and hold the Shares so transferred subject to the
provisions of this Section, and there shall be no further transfer of such
Shares except in accordance with the terms of this Section.

     (g)  Termination of Right of First Refusal. The Right of First Refusal
          -------------------------------------
shall terminate as to any Shares 90 days after the first sale of Common Stock of
the Company to the general public pursuant to a registration statement filed
with and declared effective by the Securities and Exchange Commission under the
19 Act.

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

     8.   Restrictive Legends and Stop-Transfer Orders.
          --------------------------------------------

          (a)  Legends. Optionee understands and agrees that the Company shall
               -------
cause the legends set forth below or legends substantially equivalent thereto,
to be placed upon any certificate(s) evidencing ownership of the Shares together
with any other legends that may be required by state or federal securities laws:

          THE SECURITIES REPRESENTED HEREBY HAVE NOT BEEN
          REGISTERED UNDER THE SECURITIES ACT OF 1933
          (THE "ACT) AND MAY NOT BE OFFERED, SOLD OR
          OTHERWISE TRANSFERRED, PLEDGED OR HYPOTHECATED
          UNLESS AND UNTIL REGISTERED UNDER THE ACT OR,
          IN THE OPINION OF COUNSEL IN FORM AND SUBSTANCE,
          SATISFACTORY TO THE ISSUER OF THESE SECURITIES,

                                      -4-

<PAGE>

          SUCH OFFER, SALE OR TRANSFER, PLEDGE OR
          HYPOTHECATION IS IN COMPLIANCE THEREWITH.

          THE SHARES REPRESENTED BY THIS CERTIFICATE ARE
          SUBJECT TO CERTAIN RESTRICTIONS ON TRANSFER AND
          RIGHT OF FIRST REFUSAL OPTIONS HELD BY THE
          ISSUER OR ITS ASSIGNEE(S) AS SET FORTH IN THE
          EXERCISE NOTICE BETWEEN THE ISSUER AND THE
          ORIGINAL HOLDER OF THESE SHARES, A COPY OF
          WHICH MAY BE OBTAINED AT THE PRINCIPAL OFFICE
          OF THE ISSUER. SUCH TRANSFER RESTRICTIONS AND
          RIGHT OF FIRST REFUSAL ARE BINDING ON
          TRANSFEREES OF THESE SHARES.

          IT IS UNLAWFUL TO CONSUMMATE A SALE OR TRANSFER
          OF THIS SECURITY, OR ANY INTEREST THEREIN, OR
          TO RECEIVE ANY CONSIDERATION THEREFORE, WITHOUT
          THE PRIOR WRITTEN CONSENT OF THE COMMISSIONER
          OF CORPORATIONS OF THE STATE OF CALIFORNIA,
          EXCEPT AS PERMITTED IN THE COMMISSIONER'S
          RULES.

          Optionee understands that transfer of the Shares may be restricted by
Section 260.141.11 of the Rules of the California Corporations Commissioner, a
copy of which is attached to Exhibit B, the Investment Representation Statement.

          (b)  Stop-Transfer Notices. Optionee agrees that, in order to ensure
               ---------------------
compliance with the restrictions referred to herein, the Company may issue
appropriate "stop transfer" instructions to its transfers agent, if any, and
that, if the Company transfers its own securities, it may make appropriate
notations to the same effect in its own records.

          (c)  Refusal to Transfer. The Company shall not be required (i) to
               -------------------
transfer on its books any Shares that have been sold or otherwise transferred in
violation of any of the provisions of this Agreement or (ii) to treat as owner
of such Shares or to accord the right to vote or pay dividends to any purchaser
or other transferee to whom such Shares shall have been so transferred.

          9.   Market Standoff Agreement. Optionee hereby agrees that if so
               -------------------------
requested by the Company or any representative of the underwriters in connection
with any registration of the offering of any securities of the Company under the
1993 Act, Optionee shall not sell or otherwise transfer any Shares or other
securities of the Company during the 180-day period following the effective date
of the registration statement of the Company filed under the 1933 Act;

                                      -5-

<PAGE>

provided, however, that such restriction shall only apply to the first two
registration statements of the Company to become effective under the 1993 Act
which include securities to be sold on behalf of the Company to the public in an
underwritten public offering under the 1993 Act. The Company may impose stop-
transfer instructions with respect to securities subject to the foregoing
restrictions until the end of such 180-day period.

     10.  Successors and Assigns. The Company may assign any of its rights under
          ----------------------
this Agreement to single or multiple assignees, and this Agreement shall inure
to the benefit of the successors and assigns of the Company. Subject to the
restrictions on transfer herein set forth, this Agreement shall be binding upon
Optionee and his or her heirs, executors, administrators, successors and
assigns.

     11.  Interpretation. Any dispute regarding the interpretation of this
          --------------
Agreement shall be submitted by Optionee or by the Company forthwith to the
Company's Board of Directors or the committee thereof that administers the Plan,
which shall review such dispute at its next regular meeting. The resolution of
such a dispute by the Board or committee shall be final and binding on the
Company and on Optionee.

     12.  Governing Law; Severability. This Agreement shall be governed by and
          ---------------------------
construed in accordance with the laws of the State of California excluding that
body of law pertaining to conflicts of law. Should any provision of this
Agreement be determined by a court of law to be illegal or unenforceable, the
other provisions shall nevertheless remain effective and shall remain
enforceable.

     13.  Notices. Any notice required or permitted hereunder shall be given in
          -------
writing and shall be deemed effectively given upon personal delivery or upon
deposit in the United States mail by certified mail, with postage and fees
prepaid, addressed to the other party at its address as shown below beneath its
signature, or to such other address as such party may designate in writing from
time to time to the other party.

     14.  Further Instruments. The parties agree to execute such further
          -------------------
instruments and to take such further action as may be reasonably necessary to
carry out the purposes and intent of this Agreement.

     15.  Delivery of Payment. Optioneee herewith delivers to the Company the
          -------------------
full Exercise Price for the Shares.

                                      -6-

<PAGE>

     16. Entire Agreement. The Plan and Notice of Grant/Option Agreement are
         ----------------
incorporated herein by reference. This Agreement, the Plan and the Notice of
Grant/Stock Option Agreement constitute the entire agreement of the parties and
supersede in their entirety all prior undertakings and agreements of the Company
and Optionee with respect to the subject matter hereof, and is governed by
California law except for that body of law pertaining to conflict of laws.


Submitted by:                                Accepted by:

                                                  Lynx Real-Time Systems,
                                                  Incorporated


                                             By:______________________________

                                             Its:_____________________________
___________________________
        (Signature)


Address:                                     Address:
-------                                      -------

____________________________                 2239 Samaritan Drive
                                             San Jose, CA 95124
____________________________

                                      -7-
<PAGE>

                EXERCISE NOTICE FOR NONSTATUTORY STOCK OPTIONS
                ----------------------------------------------

Lynx Real-Time Systems, Incorporated
2239 Samaritan Dr.
San Jose, CA 95124

Attention:     Secretary

     1.   Exercise of Option. Effective as of today, ____________, 19__, the
          ------------------
undersigned ("Optionee") hereby elects to exercise Optionee's option to purchase
              --------
__________ shares of the Common Stock (the "Shares") of Lynx Real-Time Systems,
                                             ------
Incorporated (the "Company") under and pursuant to the Company's 1992 Stock Plan
                   -------
(the "Plan") and the Nonstatutory Stock Option Agreement dated ____________ (the
      ----
"Option Agreement").
 ----------------

     2.   Representations of Optionee. Optionee acknowledges that Optionee has
          ---------------------------
received, read and understood the Plan and the Option Agreement and agrees to
abide by and be bound by their terms and conditions. Optionee represents that
Optionee is purchasing the Shares for Optionee's own account for investment and
not with a view to, or for sale in connection with, a distribution of any of
such Shares.

     3.   Compliance with Securities Laws. Optionee understands and acknowledges
          -------------------------------
that the Shares have not been registered under the Securities Act of 1933, as
amended (the "1933 Act"), and, notwithstanding any other provision of the Option
              --------
Agreement to the contrary, the exercise of any rights to purchase any Shares is
expressly conditioned upon compliance with the 1933 Act, all applicable state
securities laws and all applicable requirements of any stock exchange or over
the counter market on which the Company's Common Stock may be listed or traded
at the time of exercise and transfer. Optionee agrees to cooperate with the
Company to ensure compliance with such laws.

     4.   Federal Restrictions on Transfer. Optionee understands that the Shares
          --------------------------------
have not been registered under the 1933 Act and therefore cannot be resold and
must be held indefinitely unless they are registered under the 1933 Act or
unless an exemption from such registration is available and that the
certificate(s) representing the Shares may bear a legend to that effect.
Optionee understands that the Company is under no obligation to register the
Shares and that an exemption may not be available or may not permit Optionee to
transfer Shares in the amounts or at the times proposed by Optionee.
Specifically, Optionee has been advised that Rule 144 promulgated under the 1933
Act, which permits certain resales of unregistered securities, is not presently
available with respect to the Shares and, in any event requires that the Shares
be paid for
<PAGE>

and then be held for at least two years (and in some cases three years) before
they may be resold under Rule 144.

     5.   Rights as Shareholder. Subject to the terms and conditions of this
          ---------------------
Agreement, Optionee shall have all of the rights of a shareholder of the Company
with respect to the Shares from and after the date that Optionee delivers full
payment of the Exercise Price until such time as Optionee disposes of the Shares
or the Company and/or its assignee(s) exercises the Right of First Refusal
hereunder and pays the Purchase Price as set forth in Section 6(d) hereof. Upon
such exercise, Optionee shall have no further rights as a holder of the Shares
so purchased, and Optionee shall forthwith cause the certificate(s) evidencing
the Shares so purchased to be surrendered to the Company for transfer or
cancellation.

     6.   Company's Right of First Refusal. Before any Shares held by Optionee
          --------------------------------
or any transferee (either being sometimes referred to herein as the "Holder")
                                                                     ------
may be sold or otherwise transferred (including transfer by gift or operation of
law), the Company or its assignee(s) shall have a right of first refusal to
purchase the Shares on the terms and conditions set forth in this Section (the
"Right of First Refusal").
 ----------------------

          (a)  Notice of Proposed Transfer. The Holder of the Shares shall
               ---------------------------
deliver to the Company a written notice (the "Notice") stating: (i) the Holder's
                                              ------
bona fide intention to sell or otherwise transfer such Shares; (ii) the name of
each proposed purchaser or other transferee ("Proposed Transferee"); (iii) the
                                              -------------------
number of Shares to be transferred to each Proposed Transferee; and (iv) the
bona fide cash price or other consideration for which the Holder proposes to
transfer the Shares (the "Offered Price"), and the Holder shall offer the Shares
                          -------------
at the Offered Price to the Company or its assignee(s).

          (b)  Exercise of Right of First Refusal. At any time within thirty
               ----------------------------------
(30) days after receipt of the Notice, the Company and/or its assignee(s) may,
by giving written notice to the Holder, elect to purchase all, but not less than
all, of the Shares proposed to be transferred to any one or more of the Proposed
Transferees, at the purchase price determined in accordance with subsection (c)
below. Notwithstanding the foregoing, if there is more than one Proposed
Transferee, and if the Notice states that no Shares will be sold to a particular
Proposed Transferee unless a specified number of other Shares are simultaneously
sold to one or more other specifically identified Proposed Transferees (all of
such Shares that will not be sold other than simultaneously collectively
referred to as the "Related Shares"), the Company and/or its assignee(s) may not
elect to purchase newer than all of the Related Shares.


                                      -2-
<PAGE>

          (c)  Purchase Price. The purchase price ("Purchase Price") for the
               --------------                       --------------
Shares purchased by the Company or its assignee(s) under this Section shall be
the Offered Price. If the Offered Price includes consideration other than cash,
the cash equivalent value of the non-cash consideration shall be determined by
the Board of Directors of the Company in good faith.

     If the Holder or Holder's executor disputes the price as set by the Board
of Directors by giving notice to the Company within ten (10) days after being
informed of the price, the price of the Shares shall be determined by an
independent financial analyst selected by the Board of Directors of the Company
and acceptable to the Holder, with the cost of such determination to be divided
equally between the Company and the Holder. The Board of Directors shall select
such analyst within thirty (30) days after receipt of notice that the Holder is
disputing the price set by the Board of Directors. If the Board is not notified
of any such dispute within such ten (10) day period, the decision of the Board
of Directors as to the purchase price shall be final. Any time required to
determine a purchase price or to resolve a dispute shall be added to the thirty
(30) day period in which the Company may exercise its right to purchase.

          (d)  Payment. Payment of the Purchase Price shall be made, at the
               -------
option of the Company or its assignee(s), in cash (by check), by cancellation of
all or a portion of any outstanding indebtedness of the Holder to the Company
(or, in the case of repurchase by an assignee, to the assignee), or by any
combination thereof within 30 days after receipt of the Notice or in the manner
and at the times set forth in the Notice.

          (e)  Holder's Right to Transfer. If all of the Shares proposed in the
               --------------------------
Notice to be transferred to all of the Proposed Transferees are not purchased by
the Company and/or its assignee(s) as provided in this Section, then the Holder
may sell or otherwise transfer such shares to such Proposed Transferees at the
Offered Price or at a higher price, provided that such sale or other transfer is
consummated within 120 days after the date of the Notice and provided further
that any such sale or other transfer is effected in accordance with any
applicable securities laws and the Proposed Transferees agree in writing that
the provisions of this Section shall continue to apply to the Shares in the
hands of such Proposed Transferees. If the Shares described in the Notice are
not transferred to the Proposed Transferees within such period, a new Notice
shall be given to the Company, and the Company and/or its assignees shall again
be offered the Right of First Refusal before any Shares held by the Holder may
be sold or otherwise transferred.

          (f)  Exception for Certain Family Transfers. Anything to the contrary
               --------------------------------------
contained in this Section notwithstanding, the transfer of any or all of the
shares during the Optionee's lifetime or

                                     -3-

<PAGE>

on the Optionee's death by will or intestacy to the Optionee's immediate family
or a trust for the benefit of the Optionee's immediate family shall be exempt
from the provisions of this Section. "Immediate Family" as used herein shall
                                      ----------------
mean spouse, lineal descendant or antecedent, father, mother, brother or sister.
In such case, the transferee or other recipient shall receive and hold the
Shares so transferred subject to the provisions of this Section, and there shall
be no further transfer of such Shares except in accordance with the terms of
this Section.

          (g)  Termination of Right of First Refusal. The Right of First Refusal
               -------------------------------------
shall terminate as to any Shares 90 days after the first sale of Common Stock of
the Company to the general public pursuant to a registration statement filed
with and declared effective by the Securities and Exchange Commission under the
1933 Act.

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

     8.   Restrictive Legends and Stop-Transfer Orders.
          --------------------------------------------

          (a)  Legends. Optionee understands and agrees that the Company shall
               -------
cause the legends set forth below or legends substantially equivalent thereto,
to be placed upon any certificate(s) evidencing ownership of the Shares
together with any other legends that may be required by state or federal
securities laws:

          THE SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED
          UNDER THE SECURITIES ACT OF 1933 (THE "ACT") AND MAY NOT BE
          OFFERED, SOLD OR OTHERWISE TRANSFERRED, PLEDGED OR
          HYPOTHECATED UNLESS AND UNTIL REGISTERED UNDER THE ACT OR,
          IN THE OPINION OF COUNSEL IN FORM AND SUBSTANCE SATISFACTORY
          TO THE ISSUER OF THESE SECURITIES, SUCH OFFER, SALE OR
          TRANSFER, PLEDGE OR HYPOTHECATION IS IN COMPLIANCE
          THEREWITH.

          THE SHARES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO
          CERTAIN RESTRICTIONS ON TRANSFER AND RIGHT OF FIRST REFUSAL
          OPTIONS HELD BY THE ISSUER OR ITS ASSIGNEE(S) AS SET FORTH
          IN THE EXERCISE NOTICE BETWEEN THE ISSUER AND THE ORIGINAL
          HOLDER OR THESE SHARES, A COPY OF WHICH MAY BE OBTAINED AT
          THE PRINCIPAL OFFICE OF THE ISSUER. SUCH TRANSFER
          RESTRICTIONS AND

                                          -4-

<PAGE>

          RIGHT OF FIRST REFUSAL ARE BINDING ON
          TRANSFEREES OF THESE SHARES.

          IT IS UNLAWFUL TO CONSUMMATE A SALE OR TRANSFER
          OF THIS SECURITY, OR ANY INTEREST THEREIN, OR
          TO RECEIVE ANY CONSIDERATION THEREFOR, WITHOUT
          THE PRIOR WRITTEN CONSENT OF THE COMMISSIONER
          OF CORPORATIONS OF THE STATE OF CALIFORNIA,
          EXCEPT AS PERMITTED IN THE COMMISSIONER'S RULES.

          Optionee understands that transfer of the Shares may be restricted by
Section 260.141.11 of the Rules of the California Corporations Commissioner, a
copy of which is attached to Exhibit B, the Investment Representation Statement.

          (b)  Stop-Transfer Notices. Optionee agrees that, in order to ensure
               ---------------------
compliance with the restrictions referred to herein, the Company may issue
appropriate "stop transfer" instructions to its transfer agent, if any, and
that, if the Company transfers its own securities, it may appropriate notations
to the same effect in its own records.

          (c)  Refusal to Transfer. The Company shall not be required (i) to
               -------------------
transfer on its books any Shares that may have been sold or otherwise
transferred in violation of any of the provisions of this Agreement or (ii) to
treat as owner of such Shares or to accord the right to vote or pay dividends to
any purchaser or other transferee to whom such Shares shall have been so
transferred.

     9.   Market Standoff Agreement. Optionee hereby agrees that if so requested
          -------------------------
by the Company or any representative of the underwriters in connection with any
registration of the offering of any securities of the company under the 1933
Act, Optionee shall not sell or otherwise transfer any Shares or other
securities of the Company during the 180-day period following the effective date
of a registration statement of the Company filed under the 1933 Act; provided,
however, that such restriction shall only apply to the first two registration
statements of the Company to become effective under the 1933 Act which include
securities to be sold on behalf of the Company to the public in an underwritten
public offering under the 1933 Act. The Company may impose stop-transfer
instructions with respect to securities subject to the foregoing restrictions
until the end of such 180-day period.

     10.  Successors and Assigns. The Company may assign any of its rights under
          ----------------------
this Agreement to single or multiple assignees, and this Agreement shall inure
to the benefit of the successors and assigns of the Company. Subject to the
restrictions on transfer herein set forth, this Agreement shall be binding upon
Optionee and

                                     -5-
<PAGE>

his or her heirs, executors, administrators, successors and assigns.

     11.  Interpretation. Any dispute regarding the interpretation of this
          --------------
Agreement shall be submitted by Optionee or by the Company forthwith to the
Company's Board of Directors or the committee thereof that administers the Plan,
which shall review such dispute at its next regular meeting. The resolution of
such a dispute by the Board or committee shall be final and binding on the
Company and on Optionee.

     12.  Governing Law; Severability. This Agreement shall be governed by and
          ---------------------------
construed in accordance with the laws of the State of California excluding that
body of law pertaining to conflicts of law. Should any provision of this
Agreement be determined by a court of law to be illegal or unenforceable, the
other provisions shall nevertheless remain effective and shall remain
enforceable.

     13.  Notices. Any notice required or permitted hereunder shall be given in
          -------
writing and shall be deemed effectively given upon personal delivery or upon
deposit in the United States mail by certified mail, with postage and fees
prepaid, addressed to the other party at its address as shown below beneath its
signature, or to such other address as such party may designate in writing from
time to time to the other party.

     14.  Further Instruments. The parties agree to execute such further
          -------------------
instruments and to take such further action as may be reasonably necessary to
carry out the purposes and intent of this Agreement.

     15.  Delivery of Payment. Optionee herewith delivers to the Company the
          -------------------
full Exercise Price for the Shares.

                                      -6-

<PAGE>

     16. Entire Agreement. The Plan and Notice of Grant/Option Agreement are
         ----------------
incorporated herein by reference. This Agreement, the Plan and the Notice of
Grant/Stock Option Agreement constitute the entire agreement of the parties and
supersede in their entirety all prior undertakings and agreements of the Company
and Optionee with respect to the subject matter hereof, and is governed by
California law except for that body of law pertaining to conflict of laws.

Submitted by:                              Accepted by:

OPTIONEE:                                  Lynx Real-Time Systems,
                                           Incorporated


                                           By:_____________________________

                                           Its:____________________________

___________________________
       (Signature)

Address:                                   Address:
-------                                    -------

____________________________               2239 Samaritan Dr.
                                           San Jose, CA 95124
____________________________

                                      -7-

<PAGE>

                                   EXHIBIT B
                                   ----------

                     INVESTMENT REPRESENTATION STATEMENT
OPTIONEE:

COMPANY:    LYNX REAL-TIME SYSTEMS, INCORPORATED

SECURITY:   COMMON STOCK

AMOUNT:

DATE:

In connection with the purchase of the above-listed Securities, the undersigned
Optionee represents to the Company the following:

          (a) Optionee is aware of the Company's business affairs and financial
condition and has acquired sufficient information about the Company to reach an
informed and knowledgeable decision to acquire Securities. Optionee is acquiring
these securities for investment for Optionee's own account only and not with a
view to, or for resale in connection with, any "distribution" thereof within the
meaning of the Securities Act of 1933, as amended (the "Securities Act").

          (b) Optionee acknowledges and understands that the securities
constitute "restricted securities" under the Securities Act and have not been
registered under the Securities Act in reliance upon a specific exemption
therefrom, which exemption depends upon, among other things, the bona fide
nature of Optionee's investment intent as expressed herein. In this connection,
Optionee understands that, in the view of the Securities and Exchange
Commission, the statutory basis for such exemption may be unavailable if
Optionee's representation was predicted solely upon a present intention to hold
these Securities for the minimum capital gains period specified under tax
statutes, for a deferred sale, for or until an increase or decrease in the
market price of the Securities, or for a period of one year or any other fixed
period in the future. Optionee further understands that the Securities must be
held indefinitely unless they are subsequently registered under the Securities
Act or an exemption from such registration is available. Optionee further
acknowledges and understands that the Company is under no obligation to
register the securities. Optionee understands that the certificate evidencing
the securities will be imprinted with a legend which prohibits the transfer of
the Securities unless they are registered or such registration is not required
in the opinion of counsel satisfactory to the Company, a legend prohibiting
their transfer without the consent of the Commissioner of Corporations of the
State of California and any other legend required under applicable state
securities laws.

<PAGE>

          (c)  Optionee is familiar with the provisions of Rule 701 and Rule
144, each promulgated under the Securities Act, which, in substance, permit
limited public resale of "restricted securities" acquired, directly or
indirectly from the issuer thereof, in a non-public offering subject to the
satisfaction of certain conditions. Rule 701 provides that if the issuer
qualifies under Rule 701 at the time of exercise of the Option by the Optionee,
such exercise will be exempt from registration under the Securities Act. In the
event the Company later becomes subject to the reporting requirements of Section
13 or 15(d) of the Securities Exchange Act of 1934, one hundred eighty (180)
days thereafter the securities exempt under Rule 701 may be resold, subject to
the satisfaction of certain of the conditions specified by Rule 144, including
among other things: (1) the sale being made through a broker in an unsolicited
"broker's transaction" or in transactions directly with a market maker (as said
term is defined under the Securities Exchange Act of 1934); and, in the case of
an affiliate, (2) the availability of certain public information about Company,
and the amount of securities being sold during any three month period not
exceeding the limitations specified in Rule 144(e), if applicable.

     In the event that the Company does not qualify under Rule 701 at the time
of exercise of the Option, then the securities may be resold in certain limited
circumstances subject to the provisions of Rule 144, which requires among other
things: (1) the resale occurring not less than two years after the party has
purchased, and made full payment for, within the meaning of Rule 144, the
securities to be sold; and, in the case of an affiliate, or of a non-affiliate
who has held the securities less than three years, (2) the availability of
certain public information about the Company, (3) the sale being made through a
broker in an unsolicited "broker's transaction" or in transactions directly with
a market maker (as said term is defined under the Securities Exchange Act of
1934), and (4) the amount of securities being sold during any three month period
not exceeding the specified limitations stated therein, if applicable.

          (d)  Optionee agrees, in connection with the Company's initial
underwritten public offering of the Company's securities, (1) not to sell, make
short sale of, loan, grant any options for the purchase of, or otherwise dispose
of any shares of Common Stock of the Company held by Optionee (other than those
shares included in the registration) without the prior written consent of the
Company or the underwriters managing such initial underwritten public offering
of the Company's securities for one hundred eighty (180) days from the effective
date of such registration, and (2) further agrees to execute any agreement
reflecting (1) above as may be requested by the underwriters at the time of the
public offering; provided however that the officers and directors of the
                 -------- -------

                                      -2-

<PAGE>

Company who own the stock of the Company also agree to such restrictions.

          (e)  Optionee further understands that in the event all of the
applicable requirements of Rule 701 or 144 are not satisfied, registration under
the Securities Act, compliance with Regulation A, or some other registration
exemption will be required; and that, notwithstanding the fact that Rules 144
and 701 are not exclusive, the Staff of the Securities and Exchange Commission
has expressed its opinion that persons proposing to sell private placement
securities other than in a registered offering and otherwise than pursuant to
Rules 144 or 701 will have a substantial burden of proof in establishing that an
exemption from registration is available for such offers or sales, and that such
persons and their respective brokers who participate in such transactions do so
at their own risk. Optionee understands that no assurances can be given that any
such other registration exemption will be available in such event.

          (f)  Optionee understands that the certificate evidencing the
Securities will be imprinted with a legend which prohibits the transfer of the
Securities without the consent of the Commissioner of Corporations of
California. Optionee has read the applicable Commissioner's Rules with respect
to such restriction, a copy of which is attached.

                                    Signature of Optionee:

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

                                    Date:_________________, 19__

                                      -3-


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