<PAGE>

                                                                   EXHIBIT 10.19

                               COMMERCE ONE, INC.

                       STAND-ALONE STOCK OPTION AGREEMENT

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

         Robert M. Kimmitt

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

         Date of Grant                               February 11, 2000

         Vesting Commencement Date                   February 2, 2000

         Exercise Price per Share                    $150.13

         Total Number of Shares Granted              855,000

         Total Exercise Price                        $128,361,150.00

         Term/Expiration Date:                       February 2, 2010

         VESTING SCHEDULE:

         Subject to the accelerated vesting provisions set forth in Section 4 of
this Agreement, this Option shall vest and may be exercised, in whole or in
part, in accordance with the following schedule:

         12.5% of the Shares subject to the Option shall vest six (6) months
after the Vesting Commencement Date, and 1/48th of the Shares subject to the
Option shall vest on the same day of the month as the Vesting Commencement Date,
so that the Option shall be fully vested four (4) years from the Vesting
Commencement Date, subject to the Optionee continuing to be a Service Provider
on such dates.

         TERMINATION PERIOD

         This Option may be exercised for three (3) months after Optionee ceases
to be a Service Provider in accordance with Section 8 of this Agreement. Upon
the death or Disability of the Optionee, this Option may be exercised for one
year after the Optionee ceases to be a Service Provider in accordance with
Sections 9 and 10 of this Agreement. In no event shall this Option be exercised
later than the Term/Expiration Date provided.

<PAGE>

II.      AGREEMENT

     1. DEFINITIONS. As used herein, the following definitions shall apply:

                  (a) "AGREEMENT" means this stock option agreement between the
Company and Optionee evidencing the terms and conditions of this Option.

                  (b) "APPLICABLE LAWS" means the requirements relating to the
administration of stock options under U.S. state corporate laws, U.S. federal
and state securities laws, the Code, any stock exchange or quotation system on
which the Common Stock is listed or quoted and the applicable laws of any
foreign country or jurisdiction that may apply to this Option.

                  (c) "BOARD" means the Board of Directors of the Company or any
committee of the Board that has been designated by the Board to administer this
Agreement.

                  (d) "CAUSE" means (i) any act of personal dishonesty taken by
Optionee in connection with his responsibilities as an employee and intended to
result in substantial personal enrichment to Employee, (ii) Optionee's
conviction of a felony, (iii) a willful act by Optionee that constitutes gross
misconduct and that is injurious to the Company, or (iv) for a period of not
less than thirty (30) days following the delivery to Optionee of a written
demand for performance from the Company that describes the basis for the
Company's belief that Optionee has not substantially performed his duties,
continued violations by Optionee of Optionee's obligations to the Company that
are demonstrably willful and deliberate on Optionee's part. Any dismissal for
Cause must be approved by the Board prior to the dismissal date.

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

                  (f) "COMMON STOCK" means the common stock of the Company.

                  (g) "COMPANY" means Commerce One, Inc., a Delaware
corporation.

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

                  (i) "DIRECTOR" means a member of the Board.

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

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

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

                                      -2-
<PAGE>


                  (m) "FAIR MARKET VALUE" means, as of any date, the value of
Common Stock determined as the low sale price for such stock as quoted on the
Nasdaq National Market for day of determination, as reported in THE WALL STREET
JOURNAL or such other source as the Administrator deems reliable.

                  (n) "NONSTATUTORY STOCK OPTION" means an Option not intended
to qualify as an incentive stock option within the meaning of Section 422 of the
Code and the regulations promulgated thereunder.

                  (o) "NOTICE OF GRANT" means a written notice, in Part I of
this Agreement, evidencing certain the terms and conditions of this Option
grant. The Notice of Grant is part of the Option Agreement.

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

                  (q) "OPTION" means this stock option.

                  (r) "OPTIONED STOCK" means the Common Stock subject to this
Option.

                  (s) "OPTIONEE" means the person named in the Notice of Grant
or such person's successor.

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

                  (u) "SERVICE PROVIDER" means an Employee, Director or
Consultant.

                  (v) "SHARE" means a share of the Common Stock, as adjusted in
accordance with Section 11 of this Agreement.

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

         2. GRANT OF OPTION. The Board hereby grants to the Optionee named in
the Notice of Grant attached as Part I of this Agreement the Option to purchase
the number of Shares, as set forth in the Notice of Grant, at the exercise price
per share set forth in the Notice of Grant (the "Exercise Price"), subject to
the terms and conditions of this Agreement.

         3. EXERCISE OF OPTION.

                  (a) RIGHT TO EXERCISE.

                                    (1) Subject to subsections 3(a)(2) and
3(a)(3) below, this Option is exercisable during its term in accordance with the
Vesting Schedule set out in the Notice of Grant. Vested Shares shall not be
subject to the Company's repurchase right (as set forth in the Restricted Stock
Purchase Agreement, attached hereto as EXHIBIT B-1.


                                      -3-
<PAGE>


                                    (2) As a condition to exercising this Option
for unvested Shares, the Optionee shall execute the Restricted Stock Purchase
Agreement.

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

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

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

         4. DEATH OR DISABILITY, OR TERMINATION FOR OTHER THAN CAUSE WITHIN
FIRST YEAR OF EMPLOYMENT. If Optionee's employment with the Company is
terminated by the Company, within one (1) year from his date of hire for other
than Cause, or if Optionee dies or is disabled during this period, Optionee
shall immediately vest in and have the right to exercise this Option as to that
number of Shares which would have vested had Optionee continued to be employed
for twelve (12) months following the date of such termination.

         5. METHOD OF PAYMENT. Payment of the aggregate Exercise Price shall be
by any of the following, or a combination thereof, at the election of the
Optionee:

                  (a) cash or check;

                  (b) consideration received by the Company under a cashless
exercise program implemented by the Company; or

                  (c) surrender of other Shares, provided Shares acquired
directly from the Company, (i) have been owned by the Optionee for more than six
(6) months on the date of surrender, AND (ii) have a Fair Market Value on the
date of surrender equal to the aggregate Exercise Price of the Exercised Shares.

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

         7. TERM OF OPTION. This Option may be exercised only within the term
set out in the Notice of Grant, and may be exercised during such term only in
accordance with the terms of this Agreement.

                                      -4-
<PAGE>

         8. TERMINATION OF RELATIONSHIP AS A SERVICE PROVIDER. If the Optionee
ceases to be a Service Provider (other than for death or Disability), this
Option may be exercised for a period of three (3) months after the date of such
termination (but in no event later than the expiration date of this Option as
set forth in the Notice of Grant) to the extent that the Option is vested on the
date of such termination. To the extent that the Optionee does not exercise this
Option within the time specified herein, the Option shall terminate.

         9. DISABILITY OF OPTIONEE. If the Optionee ceases to be a Service
Provider as a result of the Optionee's Disability, this Option may be exercised
for a period of twelve (12) months after the date of such termination (but in no
event later than the expiration date of this Option as set forth in the Notice
of Grant) to the extent that the Option is vested on the date of such
termination. To the extent that Optionee does not exercise this Option within
the time specified herein, the Option shall terminate.

         10. DEATH OF OPTIONEE. If the Optionee dies while a Service Provider,
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 this Option as
set forth in the Notice of Grant), 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 that the Optionee was entitled to exercise the Option at the date of
death. If, after death, the Optionee's estate or a person who acquired the right
to exercise the Option by bequest or inheritance does not exercise the Option
within the time specified herein, the Option shall terminate.

         11. ADJUSTMENTS UPON CHANGES IN CAPITALIZATION, DISSOLUTION, MERGER OR
ASSET SALE.

                  (a) CHANGES IN CAPITALIZATION. Subject to any required action
by the stockholders of the Company, the number of shares of Common Stock covered
by this Option, as well as the price per share of Common Stock covered by this
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 this Option.

                  (b) DISSOLUTION OR LIQUIDATION. In the event of the proposed
dissolution or liquidation of the Company, the Board shall notify Optionee as
soon as practicable prior to the effective date of such proposed transaction.
The Board in its discretion may provide for the Optionee to have the right to
exercise this Option until ten (10) days prior to such transaction as to all of
the Optioned Stock covered thereby, including Shares as to which the Option
would not otherwise be exercisable. To the extent it has not been previously
exercised, the Option will terminate immediately prior to the consummation of
such proposed transaction.

                                      -5-
<PAGE>

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

         12. NOTICES. Any notice to be given to the Company hereunder shall be
in writing and shall be addressed to the Company. at its then current principal
executive office or to such other address as the Company may hereafter designate
to the Optionee by notice as provided in this Section. Any notice to be given to
the Optionee hereunder shall be addressed to the Optionee at the address set
forth beneath his signature hereto, or at such other address as the Optionee may
hereafter designate to the Company by notice as provided herein. A notice shall
be deemed to have been duly given when personally delivered or mailed by
registered or certified mail to the party entitled to receive it.

         13. WITHHOLDING TAXES. Optionee agrees to make appropriate arrangements
with the Company (or the Parent or Subsidiary employing or retaining Optionee)
for the satisfaction of all Federal, state, and local income and employment tax
withholding requirements applicable to the Option exercise. Optionee
acknowledges and agrees that the Company may refuse to honor the exercise and
refuse to deliver Shares if such withholding amounts are not delivered at the
time of exercise.

         14. ENTIRE AGREEMENT; GOVERNING LAW. This Agreement constitutes the
entire agreement of the parties with respect to the subject matter hereof and
supersedes in its entirety all prior undertakings and agreements of the Company
and Optionee with respect to the subject matter hereof, and may not be modified
adversely to the Optionee's interest except by means of a writing signed by the
Company and Optionee. This agreement is governed by the internal substantive
laws, but not the choice of law rules, of California.

                                      -6-
<PAGE>

         15. NO GUARANTEE OF CONTINUED SERVICE. OPTIONEE ACKNOWLEDGES AND AGREES
THAT THE VESTING OF SHARES PURSUANT TO THE VESTING SCHEDULE HEREOF IS EARNED
ONLY BY CONTINUING AS A SERVICE PROVIDER AT THE WILL OF THE COMPANY (AND NOT
THROUGH THE ACT OF BEING HIRED, BEING GRANTED AN OPTION OR PURCHASING SHARES
HEREUNDER). OPTIONEE FURTHER ACKNOWLEDGES AND AGREES THAT THIS AGREEMENT, THE
TRANSACTIONS CONTEMPLATED HEREUNDER AND THE VESTING SCHEDULE SET FORTH HEREIN DO
NOT CONSTITUTE AN EXPRESS OR IMPLIED PROMISE OF CONTINUES ENGAGEMENT AS A
SERVICE PROVIDER FOR THE VESTING PERIOD, FOR ANY PERIOD, OR AT ALL, AND SHALL
NOT INTERFERE WITH OPTIONEE'S RIGHT OR THE COMPANY'S RIGHT TO TERMINATE
OPTIONEE'S RELATIONSHIP AS A SERVICE PROVIDER AT ANY TIME, WITH OR WITHOUT
CAUSE.

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

OPTIONEE                               COMMERCE ONE, INC.

   /S/ ROBERT M. KIMMITT                 PETER F. PERVERE
-----------------------------          ------------------------------
Signature                              By

      ROBERT M. KIMMITT                  SENIOR VICE PRESIDENT & CFO
-----------------------------          ------------------------------
Print Name                             Title

                                      -7-
<PAGE>



                                    EXHIBIT A
                                    ---------

                               COMMERCE ONE, INC.

                                 EXERCISE NOTICE

Commerce One, Inc.
4440 Rosewood Drive
Pleasanton, CA 94588

Attention: General Counsel

         1. EXERCISE OF OPTION. Effective as of today, ________________, 20__,
the undersigned ("Purchaser") hereby elects to purchase ______________ shares
(the "Shares") of the Common Stock of Commerce One, Inc. (the "Company") under
and pursuant to the Stock Option Agreement dated _____________ (the "Option
Agreement"). The purchase price for the Shares shall be $_______, as required by
the Option Agreement.

         2. DELIVERY OF PAYMENT. Purchaser herewith delivers to the Company the
full purchase price for the Shares.

         3. REPRESENTATIONS OF PURCHASER. Purchaser acknowledges that Purchaser
has received, read and understood the Option Agreement and agrees to abide by
and be bound by their terms and conditions.

         4. RIGHTS AS SHAREHOLDER. Until the issuance (as evidenced by the
appropriate entry on the books of the Company or of a duly authorized transfer
agent of the Company) of the Shares, no right to vote or receive dividends or
any other rights as a stockholder shall exist with respect to the Optioned
Stock, notwithstanding the exercise of the Option. The Shares so acquired shall
be issued to the Optionee as soon as practicable after exercise of the Option.
No adjustment will be made for a dividend or other right for which the record
date is prior to the date of issuance, except as provided in Section 10 of the
Option Agreement.

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

         6. SUCCESSORS AND ASSIGNS. The Company may assign any of its rights
under this Exercise Notice to single or multiple assignees, and this Exercise
Notice shall inure to the benefit of the successors and assigns of the Company.
Subject to the restrictions on transfer herein set forth, this Exercise Notice
shall be binding upon Optionee and Optionee's heirs, executors, administrators,
successors and assigns.


<PAGE>

         7. INTERPRETATION. Any dispute regarding the interpretation of this
Exercise Notice shall be submitted by Optionee or by the Company forthwith to
the Board which shall review such dispute at its next regular meeting. The
resolution of such a dispute by the Board shall be final and binding on all
parties.

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

Submitted by:                       Accepted by:

OPTIONEE                            COMMERCE ONE, INC.

----------------------------        ----------------------------------
Signature                           By

----------------------------        ----------------------------------
Print Name                          Its

Address:                            Address:

                                    Date Received: ___________________

                                      -2-
<PAGE>


                                  EXHIBIT B-1
                                  -----------

                               COMMERCE ONE, INC.

                       RESTRICTED STOCK PURCHASE AGREEMENT

          THIS AGREEMENT is made between Robert M. Kimmitt (the "Purchaser") and
Commerce One, Inc. (the "Company") as of __________________, ____.

                                    RECITALS

         (A) Pursuant to the exercise of the stock option granted to Purchaser
pursuant to the Stand-Alone Stock Option Agreement (the "Option Agreement")
dated ___________ by and between the Company and Purchaser with respect to such
grant, which Option Agreement is hereby incorporated by reference, Purchaser has
elected to purchase _________ of those shares which have not become vested under
the vesting schedule set forth in the Option Agreement ("Unvested Shares"). The
Unvested Shares and the shares subject to the Option Agreement which have become
vested are sometimes collectively referred to herein as the "Shares".

         (B) As required by the Option Agreement, as a condition to Purchaser's
election to exercise the Option, Purchaser must execute this Restricted Stock
Purchase Agreement, which sets forth the rights and obligations of the parties
with respect to Shares acquired upon exercise of the Option.

         1.   REPURCHASE OPTION.

                  (a) If Purchaser's status as a Service Provider is terminated
for any reason, including for death or Disability, the Company shall have the
right and option to purchase from Purchaser, or Purchaser's personal
representative, as the case may be, all of the Purchaser's Unvested Shares as of
the date of such termination at the price paid by the Purchaser for such Shares
(the "Repurchase Option").

                  (b) Upon the occurrence of a termination, the Company may
exercise its Repurchase Option by delivering personally or by registered mail,
to Purchaser (or his transferee or legal representative, as the case may be),
within ninety (90) days of the termination, a notice in writing indicating the
Company's intention to exercise the Repurchase Option and setting forth a date
for closing not later than thirty (30) days from the mailing of such notice. The
closing shall take place at the Company's office. At the closing, the holder of
the certificates for the Unvested Shares being transferred shall deliver the
stock certificate or certificates evidencing the Unvested Shares, and the
Company shall deliver the purchase price therefor.

                  (c) At its option, the Company may elect to make payment for
the Unvested Shares to a bank selected by the Company. The Company shall avail
itself of this option by a notice in writing to Purchaser stating the name and
address of the bank, date of closing, and waiving the closing at the Company's
office.


<PAGE>

                  (d) If the Company does not elect to exercise the Repurchase
Option conferred above by giving the requisite notice within ninety (90) days
following the termination, the Repurchase Option shall terminate.

                  (e) The Repurchase Option shall terminate in accordance with
the Vesting Schedule in Optionee's Option Agreement.

         2. TRANSFERABILITY OF THE SHARES; ESCROW.

                  (a) Purchaser hereby authorizes and directs the secretary of
the Company, or such other person designated by the Company, to transfer the
Unvested Shares as to which the Repurchase Option has been exercised from
Purchaser to the Company.

                  (b) To insure the availability for delivery of Purchaser's
Unvested Shares upon repurchase by the Company pursuant to the Repurchase Option
under Section 1, Purchaser hereby appoints the secretary, or any other person
designated by the Company as escrow agent, as its attorney-in-fact to sell,
assign and transfer unto the Company, such Unvested Shares, if any, repurchased
by the Company pursuant to the Repurchase Option and shall, upon execution of
this Agreement, deliver and deposit with the secretary of the Company, or such
other person designated by the Company, the share certificates representing the
Unvested Shares, together with the stock assignment duly endorsed in blank,
attached hereto as EXHIBIT B-2. The Unvested Shares and stock assignment shall
be held by the secretary in escrow, pursuant to the Joint Escrow Instructions of
the Company and Purchaser attached as EXHIBIT B-3 hereto, until the Company
exercises its purchase right as provided in Section 1, until such Unvested
Shares are vested, or until such time as this Agreement no longer is in effect.
As a further condition to the Company's obligations under this Agreement, the
spouse of the Purchaser, if any, shall execute and deliver to the Company the
Consent of Spouse attached hereto as EXHIBIT B-4. Upon vesting of the Unvested
Shares, the escrow agent shall promptly deliver to the Purchaser the certificate
or certificates representing such Shares in the escrow agent's possession
belonging to the Purchaser, and the escrow agent shall be discharged of all
further obligations hereunder; provided, however, that the escrow agent shall
nevertheless retain such certificate or certificates as escrow agent if so
required pursuant to other restrictions imposed pursuant to this Agreement.

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

                  (d) Transfer or sale of the Shares is subject to restrictions
on transfer imposed by any applicable state and federal securities laws. Any
transferee shall hold such Shares subject to all the provisions hereof and the
Exercise Notice executed by the Purchaser with respect to any Unvested Shares
purchased by Purchaser and shall acknowledge the same by signing a copy of this
Agreement.

         3. OWNERSHIP, VOTING RIGHTS, DUTIES. This Agreement shall not affect in
any way the ownership, voting rights or other rights or duties of Purchaser,
except as specifically provided herein.

                                      -2-
<PAGE>


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

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

         5. ADJUSTMENT FOR STOCK SPLIT. All references to the number of Shares
and the purchase price of the Shares in this Agreement shall be appropriately
adjusted to reflect any stock split, stock dividend or other change in the
Shares which may be made by the Company after the date of this Agreement.

         6. NOTICES. Notices required hereunder shall be given in person or by
registered mail to the address of Purchaser shown on the records of the Company,
and to the Company at their respective principal executive offices.

         7. SURVIVAL OF TERMS. This Agreement shall apply to and bind Purchaser
and the Company and their respective permitted assignees and transferees, heirs,
legatees, executors, administrators and legal successors.

         8. SECTION 83(B) ELECTION. Purchaser hereby acknowledges that he or she
has been informed that, with respect to the exercise of an Option for unvested
Shares, an election may be filed by the Purchaser with the Internal Revenue
Service, within 30 days of the purchase of the Shares, electing pursuant to
Section 83(b) of the Code to be taxed currently on any difference between the
purchase price of the Shares and their Fair Market Value on the date of
purchase. Purchaser is strongly encouraged to seek the advice of Optionee's own
tax consultants in connection with the purchase of the Shares and the
advisability of filing of the Election under Section 83(b) of the Code. A form
of Election under Section 83(b) is attached hereto as EXHIBIT B-5 for reference.

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

         9. REPRESENTATIONS. Purchaser has reviewed with his own tax advisors
the federal, state, local and foreign tax consequences of this investment and
the transactions contemplated by this Agreement. Purchaser is relying solely on
such advisors and not on any statements or representations of the Company or any
of its agents. Purchaser understands that he (and not the Company) shall be
responsible for his own tax liability that may arise as a result of this
investment or the transactions contemplated by this Agreement.

         10. GOVERNING LAW. This Agreement shall be governed by the internal
substantive laws, but not the choice of law rules, of California.

                                      -3-
<PAGE>

         Purchaser represents that he has read this Agreement and is familiar
with its terms and provisions. Purchaser hereby agrees to accept as binding,
conclusive and final all decisions or interpretations of the Board upon any
questions arising under this Agreement.

         IN WITNESS WHEREOF, this Agreement is deemed made as of the date first
set forth above.

                                    COMMERCE ONE, INC.

                                    -------------------------------
                                    By

                                    -------------------------------
                                    Title

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

                                    PURCHASER

                                    -------------------------------
                                    Signature

                                    -------------------------------
                                    Printed Name

                                    -------------------------------
                                    Soc. Sec. No.

                                    ADDRESS:

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

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


                                      -4-
<PAGE>


                                   EXHIBIT B-2
                                   -----------

                      ASSIGNMENT SEPARATE FROM CERTIFICATE

         FOR VALUE RECEIVED I, Robert M. Kimmitt, hereby sell, assign and
transfer unto Commerce One, Inc. _____________ shares of the Common Stock of
Commerce One, Inc. standing in my name of the books of said corporation
represented by Certificate No. _____ herewith and do hereby irrevocably
constitute and appoint _____________________________ to transfer the said stock
on the books of the within named corporation with full power of substitution in
the premises.

          This Stock Assignment may be used only in accordance with the
Restricted Stock Purchase Agreement between Commerce One, Inc. and the
undersigned dated ______________, ____.

Dated: _______________, ____

                                Signature:______________________________




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


<PAGE>


                                   EXHIBIT B-3
                                   -----------

                            JOINT ESCROW INSTRUCTIONS

------------, ----

Corporate Secretary
Commerce One, Inc.
4440 Rosewood Drive
Pleasanton, CA 94588

Attention:  Secretary

Dear ____________:

         As Escrow Agent for both Commerce One, Inc. (the "Company"), and the
undersigned purchaser of stock of the Company (the "Purchaser"), you are hereby
authorized and directed to hold the documents delivered to you pursuant to the
terms of that certain Restricted Stock Purchase Agreement ("Agreement") between
the Company and the undersigned, in accordance with the following instructions:

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

         2. At the closing, you are directed (a) to date the stock assignments
necessary for the transfer in question, (b) to fill in the number of shares
being transferred, and (c) to deliver same, together with the certificate
evidencing the shares of stock to be transferred, to the Company or its
assignee, against the simultaneous delivery to you of the purchase price (by
cash, a check, or some combination thereof) for the number of shares of stock
being purchased pursuant to the exercise of the Company's repurchase option.

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


<PAGE>

Subject to the provisions of this paragraph 3, Purchaser shall
exercise all rights and privileges of a stockholder of the Company while the
stock is held by you.

         4. Upon written request of the Purchaser, but no more than once per
calendar year, unless the Company's repurchase option has been exercised, you
will deliver to Purchaser a certificate or certificates representing so many
shares of stock as are not then subject to the Company's repurchase option.
Within 120 days after cessation of Purchaser's continuous employment by or
services to the Company, or any parent or subsidiary of the Company, you will
deliver to Purchaser a certificate or certificates representing the aggregate
number of shares held or issued pursuant to the Agreement and not purchased by
the Company or its assignees pursuant to exercise of the Company's repurchase
option.

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

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

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

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

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

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

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


                                      -2-
<PAGE>

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

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

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

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

                  COMPANY:          Commerce One, Inc.
                                    4440 Rosewood Drive
                                    Pleasanton, CA 94588

                  Attention:        General Counsel

                  PURCHASER:        Robert M. Kimmitt

                  ESCROW AGENT:     Corporate Secretary
                                    Commerce One, Inc.
                                    4440 Rosewood Drive
                                    Pleasanton, CA 94588
                                    Attention: Robert M. Tarkoff

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

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


                                      -3-
<PAGE>


         17. These Joint Escrow Instructions shall be governed by the internal
substantive laws, but not the choice of law rules, of California.

                                 COMMERCE ONE, INC.

                                 --------------------------------
                                 By

                                 --------------------------------
                                 Title

                                 PURCHASER

                                 --------------------------------
                                 Signature

                                 --------------------------------
                                 Robert M. Kimmitt

                                 ESCROW AGENT

                                 --------------------------------
                                 Corporate Secretary

                                      -4-
<PAGE>


                                   EXHIBIT B-4
                                   -----------

                                CONSENT OF SPOUSE

         I, Holly S. Kimmitt, spouse of Robert M. Kimmitt, have read and approve
the foregoing Agreement. In consideration of granting of the right to my spouse
to purchase shares of Commerce One, Inc., as set forth in the Agreement, I
hereby appoint my spouse as my attorney-in-fact in respect to the exercise of
any rights under the Agreement and agree to be bound by the provisions of the
Agreement insofar as I may have any rights in said Agreement or any shares
issued pursuant thereto under the community property laws or similar laws
relating to marital property in effect in the state of our residence as of the
date of the signing of the foregoing Agreement.

Dated: _______________, ____             ______________________________
                                          HOLLY S. KIMMITT


<PAGE>


JDB:P:\SFO\2377SFO0\ORIG3\INSERT_H_-_10-Q_6_30_00.DOC

                                   EXHIBIT B-5
                                   -----------

                          ELECTION UNDER SECTION 83(B)

                      OF THE INTERNAL REVENUE CODE OF 1986

         The undersigned taxpayer hereby elects, pursuant to Sections 55 and
83(b) of the Internal Revenue Code of 1986, as amended, to include in taxpayer's
gross income or alternative minimum taxable income, as the case may be, for the
current taxable year the amount of any compensation taxable to taxpayer in
connection with taxpayer's receipt of the property described below:

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

<TABLE>


<S>                                <C>                         <C>
         NAME:                      TAXPAYER:                    SPOUSE:

         ADDRESS:

         IDENTIFICATION NO.:        TAXPAYER:                    SPOUSE:

         TAXABLE YEAR:

</TABLE>


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

3. The date on which the property was transferred is: __________________, ____.

4. The property is subject to the following restrictions:

         The Shares may not be transferred and are subject to forfeiture under
         the terms of an agreement between the taxpayer and the Company. These
         restrictions lapse upon the satisfaction of certain conditions
         contained in such agreement.

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

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

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

   THE UNDERSIGNED UNDERSTANDS THAT THE FOREGOING ELECTION MAY NOT BE REVOKED
EXCEPT WITH THE CONSENT OF THE COMMISSIONER.

<TABLE>

<S>                                                  <C>


Dated: ________________________, _____               _______________________________________
                                                              Taxpayer

The undersigned spouse of taxpayer joins in this election.

Dated: ________________________, _____               _______________________________________
                                                              Spouse of Taxpayer
</TABLE>