Document:

<PAGE>
                                 EXHIBIT 10.15

         CHANGE OF CONTROL AGREEMENTS IN EFFECT AS OF JANUARY 28, 2003

1 YEAR AGREEMENTS
Eric Q. Broderson
John Chamberlain
Lisa A. Clarke
Dave Fox
Randall Hollis
Lynn Jacobs
Mark W. Matson
Jonathan E. Otis
Scott A. Roza
Paul G. Rutherford
Richard S. Sato
F. James Vaughan
Christopher S. Willis
William Yaman

2 YEAR AGREEMENTS
William C. Britts
Jon W. Gacek
John W. Powell III
Said Rahmani-Khezri
Linda A. Schoemaker

3 YEAR AGREEMENTS
Charles H. Stonecipher
Peter H. van Oppen<PAGE>

                                                                   EXHIBIT 4.13

                                                        No. of Rights:

                                                          CUSIP No. 412552 12 7

   VOID IF NOT RECEIVED BY THE SUBSCRIPTION AGENT BEFORE 5:00 P.M. NEW YORK
CITY TIME ON               , 2003 (UNLESS EXTENDED BY THE COMPANY)

                                 [LOGO] HARKEN
                               Energy Corporation
                     Subscription Rights for Common Stock

Dear Stockholder:

   As the registered owner of this Subscription Certificate, you are the owner
of the number of subscription rights shown above. The subscription rights
entitle you to subscribe for shares of common stock, par value $0.01 per share,
of Harken Energy Corporation (the "Company"). Each subscription right will
entitle the holder to purchase        shares of our common stock at the
subscription price of $       per right (or $       per share) (the
"Subscription Price"). For a more complete description of the terms and
conditions of the rights offering, please refer to the enclosed Prospectus.

   You have been issued one subscription right for each share of common stock
that you held on January 30, 2003 and one subscription right for each share of
common stock issuable upon the conversion of the Series G1 preferred stock and
the Series G2 preferred stock that you held on January 30, 2003.

                THESE SUBSCRIPTION RIGHTS ARE NON-TRANSFERABLE

   You have three choices:

    1. You can subscribe for all of the new shares, based on the number of
       rights listed at the top of the page;

    2. You can subscribe for less than the number of new shares based on the
       number of rights listed above, and allow the rest of your subscription
       rights to expire; or

    3. If you do not want to purchase any additional shares, you can disregard
       this material.

To subscribe, full payment of the Subscription Price is required for each share
of common stock. You must complete the reverse side of this form to subscribe
for new shares.

<TABLE>
<S>                                       <C>
ATTEST:                                   HARKEN ENERGY CORPORATION

By: ----------------------------------    By: ----------------------------------
</TABLE>

                                      1

<PAGE>

                                                        No. of Rights: ________

                                                          CUSIP No. 412552 12 7

                 DELIVERY OPTIONS FOR SUBSCRIPTION CERTIFICATE

                 By mail, by hand or by overnight courier to:
                    American Stock Transfer & Trust Company
                            Attention: Rights Agent

                          59 Maiden Lane, Plaza Level

                             New York, N.Y. 10038

                                (800) 937-5449

Delivery to an address other than the address listed above will not constitute
                                valid delivery.
           Delivery by facsimile will not constitute valid delivery.

               Please print all information clearly and legibly.

<TABLE>
<S>                                                        <C>
-------------------------------------------------------------------------------------------------------------
  If you wish to subscribe for shares pursuant to your Subscription Rights in full or a portion thereof:

    I subscribe for ____________ Rights   x   $ ________ =   $ ___________________________________________
                                                                                         (Amount enclosed)
-------------------------------------------------------------------------------------------------------------
   To subscribe. I acknowledge that I have                 You must have your signature guaranteed if
received the Prospectus for this offer and I hereby        you wish to have your shares delivered to an
irrevocably subscribe for the number of shares             address other than that shown on the front.
indicated above on the terms and conditions specified      Your signature must be guaranteed by: (a) a
in the Prospectus. I hereby agree that if I fail to pay    commercial bank or trust company, (b) a member
for the shares of common stock for which I have            firm of a domestic stock exchange, or (c) a credit
subscribed, the Company may exercise its legal             union.
remedies against me.
                                                           Medallion Stamp/Signature Guaranteed:
Signature(s) of Subscriber(s):
                                                           ------------------------------------
--------------------------------------                                   (Name of Bank or Firm)

Please give your telephone number:                         By: ______________________________________________
(     ) _______________________________________________                  (Signature of Officer)

Address for delivery of shares if other than shown on
front:

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

--------------------------------------
If permanent change of address, check here [_].

Important: The signature(s) must correspond in
every particular, without alteration, with the name(s)
as printed on the reverse of this Subscription
Certificate.
</TABLE>

                                      2

<PAGE>

--------------------------------------------------------------------------------
                         Method of Payment (Check One)

   [_] Uncertified personal check, payable to American Stock Transfer & Trust
       Company as Subscription Agent for the Company. Please note that funds
       paid by uncertified personal check may take at least five business days
       to clear. Accordingly, subscription rights holders who wish to pay the
       purchase price by means of an uncertified personal check are urged to
       make payment sufficiently in advance of the expiration date to ensure
       that such payment is received and clears by the expiration date, and are
       urged to consider payment by means of a certified or bank check, money
       order or wire transfer of immediately available funds.

   [_] Certified check or bank check drawn on a U.S. bank or money order,
       payable to American Stock Transfer & Trust Company as Subscription Agent
       for the Company.

   [_] Wire transfer directed to the account maintained by American Stock
       Transfer & Trust Company at:

          JP Morgan Chase

          55 Water Street

          New York, NY 10005

          ABA #021000021,
          Credit Account No. 323-113060

          Account Name: American Stock Transfer & Trust Company

                        Subscription Agent

   If the amount enclosed or transmitted is not sufficient to pay the purchase
price for all shares of common stock that are to be subscribed for, or if the
number of shares of common stock being subscribed for is not specified, the
number of shares of common stock subscribed for will be assumed to be the
maximum number that could be subscribed for upon payment of such amount. If the
amount enclosed or transmitted exceeds the purchase price for all shares of
common stock that the undersigned has the right to subscribe for (such excess
amount, the "Subscription Excess"), the Subscription Agent shall return the
Subscription Excess to the subscriber without interest or deduction.

Stock certificates for the shares subscribed for pursuant to the rights
offering will be delivered as soon as practicable after the expiration date.
Any refund in connection with your subscription will be delivered as soon as
practicable thereafter.

                                      31997 NONSTATUTORY STOCK OPTION PLAN

  
 EXHIBIT 10.4 
 PARAMETRIC TECHNOLOGY CORPORATION 
  
 1997 NONSTATUTORY STOCK OPTION PLAN

  
 1.    Purpose 
  
 The purpose of the Parametric Technology Corporation 1997 Nonstatutory Stock Option Plan (the “Plan”) is to attract and retain key employees and consultants of
the Company and its Affiliates, to provide an incentive for them to achieve long-range performance goals, and to enable them to participate in the long-term growth of the Company. 
  
 2.    Definitions 
  
 “Affiliate” means any business entity in which the Company owns directly or indirectly 50% or more of the total voting power or has a significant financial interest as determined by the Committee. 
  
 “Board” means the Board of Directors of the Company. 
  
 “Committee” means one or more committees appointed by the Board to administer the Plan or a specified portion thereof. 
  
 “Common Stock” or “Stock” means the Common Stock, $.01 par value, of the Company. 
  
 “Company” means Parametric Technology Corporation. 
  
 “Designated Beneficiary” means the beneficiary designated by a Participant, in a manner determined by the Committee, to receive amounts due or exercise rights of
the Participant in the event of the Participant’s death. In the absence of an effective designation by a Participant, “Designated Beneficiary” means the Participant’s estate. 
  

“Fair Market Value” means, with respect to Common Stock or any other property, the fair market value of such property as determined by the Committee in good
faith or in the manner established by the Committee from time to time. 
  
 “Nonstatutory Stock
Option”—See Section 6(a). 
  
 “Option”—A Nonstatutory Stock Option. 
  
 “Participant” means a person selected by the Committee to receive an Option under the Plan. 

  
 3.    Administration 
  
 The Plan shall be administered by the Committee, provided that the Board may in any instance perform any of the functions of the
Committee. The Committee shall have authority to adopt, alter and repeal such administrative rules, guidelines and practices governing the operation of the Plan as it shall from time to time consider advisable, and to interpret the provisions of the
Plan. The Committee’s decisions shall be final and binding. 
  
 4.    Eligibility 

 
 All employees and consultants of the Company or any Affiliate, capable of contributing significantly to the successful
performance of the Company, other than any person who has irrevocably elected not to be eligible and any person subject to Section 16 of the Exchange Act of 1934, as amended from time to time, or any successor law, are eligible to be Participants in
the Plan. 
  
 5.    Stock Available for Options 
  
 (a)    Amount.  Subject to adjustment under subsection (b), Options may be granted under the Plan for up to 63,000,000 shares of
Common Stock. If any Option expires or is terminated unexercised or is forfeited or settled in a manner that results in fewer shares outstanding than were granted, the shares subject to such Option, to the extent of such expiration, termination,
forfeiture or decrease, shall again be available for grant under the Plan. Common Stock issued through the assumption or substitution of outstanding grants from an acquired company shall not reduce the shares available for grant under the Plan.
Shares issued under the Plan may consist in whole or in part of authorized but unissued shares or treasury shares. 
  
 (b)    Adjustment.  In the event of any stock dividend, extraordinary cash dividend, recapitalization, reorganization, merger, consolidation, split-up, spin-off, combination, exchange of
shares, or other transaction affecting the Common Stock, then (subject in the case of Incentive Stock Options to any limitation required under the Code) (i) the number and kind of shares in respect of which Options may be granted under the Plan,
(ii) the number and kind of shares subject to outstanding Options, and (iii) the exercise price with respect to any of the foregoing shall be proportionately adjusted to the extent required equitably to preserve the benefits available hereunder,
provided that the number of shares subject to any Option shall always be a whole number, and if considered appropriate, the Committee may make provision for a cash payment with respect to an outstanding Option. 
  
 6.    Stock Options 
  
 (a)    Grant of Options.  Subject to the provisions of the Plan, the Committee may grant options (“Nonstatutory Stock Options”) to purchase shares
of Common Stock that are not intended to be “incentive stock options” complying with the requirements of Section 422 of the Internal Revenue Code of 1986, as amended from time to time (the “Code”), or any successor
provision. The Committee shall determine the number of shares subject to each Option and the exercise price therefor, which shall not be less than 100% of the Fair Market Value of the Common Stock on the date of grant. 

 
 2 

  
 (b)    Terms and Conditions.  Each
Option shall have a term no longer than ten years from the date of grant and shall be exercisable at the time(s) and subject to the terms and conditions set forth in the form of option certificate included in Appendix I hereto or as the Committee
may otherwise specify in the applicable grant or thereafter. The Committee may impose such conditions with respect to the exercise of Options, including conditions relating to applicable federal or state securities laws, as it considers necessary or
advisable. 
  
 (c)    Payment.  No shares shall be delivered pursuant to
any exercise of an Option until payment in full of the exercise price therefor is received by the Company. Such payment may be made in whole or in part in cash or, to the extent permitted by the Committee at or after the grant of the Option, by
delivery of a note or shares of Common Stock owned by the Participant or by retaining shares otherwise issuable pursuant to the Option, in each case valued at their Fair Market Value on the date of delivery or retention, or such other lawful
consideration, including a payment commitment of a financial or brokerage institution, as the Committee may determine. 
  
 7.    Termination of Employment or Engagement 
  
 If the
Optionholder’s status as an employee or consultant of (a) the Company, (b) an Affiliate, or (c) a corporation (or parent or subsidiary corporation of such corporation) issuing or assuming a stock option in a transaction to which section 424(a)
of the Code applies, is terminated for any reason (voluntary or involuntary) and the period of exercisability for a particular Option following such termination has not been specified by the Board, each such Option then held by that Participant
shall expire to the extent not previously exercised ninety (90)1 calendar days after such
Participant’s employment or engagement is terminated, except that— 
  
 (a)    If
the Participant is on military, sick leave or other bona fide leave of absence (such as temporary employment by the federal government), his or her employment or engagement with the Company will be treated as continuing intact if the period
of such leave does not exceed ninety (90) days, or, if longer, so long as the Participant’s right to reemployment or the survival of his or her service arrangement with the Company is guaranteed either by statute or by contract; otherwise, the
Participant’s employment or engagement will be deemed to have terminated on the 91st day of such leave. 
  
 (b)    If the Participant’s employment is terminated by reason of his or her retirement from the Company at normal retirement age, each Option then held by the Participant, to the extent exercisable at
retirement, may be exercised by the Participant at any time within three (3) months after such retirement unless terminated earlier by its terms. 
  
 (c)    If the Participant’s employment or engagement is terminated by reason of his or her death, each Option then held by the Participant, to the extent exercisable at the
date of death, may be exercised at any time within one year after that date (unless terminated earlier by its terms) by the person(s) to whom the Participant’s option rights pass by will or by the applicable laws of descent and distribution.

 

	1
	 
	(i) Effective November 15, 2001 the post termination exercisability period
was amended to be ninety (90) calendar days. Only those Options granted on or after November 15, 2001 have this ninety (90) day post termination exercisability period. The previous ten (10) day period remains in effect for all Options granted
prior to November 15, 2001. 
 

 
 3 

  
 (d)    If the Participant’s employment or engagement is
terminated by reason of his or her becoming permanently and totally disabled, each Option then held by the Participant, to the extent exercisable upon the occurrence of permanent and total disability, may be exercised by the Participant at any time
within one (1) year after such occurrence unless terminated earlier by its terms. For purposes hereof, an individual shall be deemed to be “permanently and totally disabled” if he or she is unable to engage in any substantial gainful
activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or which has lasted or can be expected to last for a continuous period of not less than twelve (12) months. Any determination of
permanent and total disability shall be made in good faith by the Company on the basis of a report signed by a qualified physician. 
  
 8.    General Provisions Applicable to Options 
  
 (a)    Limitations on Transferability.  Options shall not be transferable by the recipient other than by will or the laws of descent and distribution and are exercisable during such
person’s lifetime only by such person or by such person’s guardian or legal representative; provided that the Committee may in its discretion waive such restriction in any case. 
  
 (b)    Documentation.  Each Option under the Plan shall be evidenced by a written stock option certificate delivered to the
Participant specifying the terms and conditions thereof and containing such other terms and conditions not inconsistent with the provisions of the Plan as the Committee considers necessary or advisable to achieve the purposes of the Plan or to
comply with applicable tax and regulatory laws and accounting principles. 
  
 (c)    Committee Discretion.  Options may be granted alone, in addition to or in relation to any other Option. The terms of each Option need not be identical, and the Committee need not
treat Participants uniformly. Except as otherwise provided by the Plan or a particular Option, any determination with respect to an Option may be made by the Committee at the time of grant or at any time thereafter. 
  
 (d)    Dividends and Cash Options.  In the discretion of the Committee, any Option under the
Plan may provide the Participant with (i) dividends or dividend equivalents payable (in cash or in the form of Options under the Plan) currently or deferred with or without interest, and (ii) cash payments in lieu of or in addition to an Option.

  
 (e)    Change in Control.  In order to preserve a Participant’s
rights under an Option in the event of a change in control (as defined by the Committee) of the Company, the Committee in its discretion may, at the time an Option is granted or at any time thereafter, take one or more of the following actions: (i)
provide for the acceleration of any time period relating to the exercise of the Option, (ii) provide for payment to the Participant of cash or other property with a Fair Market Value equal to the value that would have been received upon the exercise
of the Option had the Option been exercised upon the change in control, (iii) adjust the terms of the Option in a manner determined by the Committee to reflect the change in control, (iv) cause the Option to be assumed, or new rights substituted
therefor, by another entity, or (v) make such other provision as the Committee may consider equitable to Participants and in the best interests of the Company. 

 
 4 

  
 (f)    Loans.  The Committee may
authorize the making of loans or cash payments to Participants in connection with the grant or exercise of any Option under the Plan, which loans may be secured by any security, including Common Stock, underlying such Option (provided that the loan
shall not exceed the Fair Market Value of the security subject to such Option), and which may be forgiven upon such terms and conditions as the Committee may establish at the time of such loan or at any time thereafter. 
  
 (g)    Withholding Taxes.  The Participant shall pay to the Company, or make provision
satisfactory to the Committee for payment of, any taxes required by law to be withheld in respect of Options under the Plan no later than the date of the event creating the tax liability. The Company and its Affiliates may, to the extent permitted
by law, deduct any such tax obligations from any payment of any kind otherwise due to the Participant. In the Committee’s discretion, the Participant may pay any taxes due with respect to an Option in whole or in part in shares of Common Stock,
including shares retained from the Option creating the tax obligation, valued at their Fair Market Value on the date of retention or delivery. 
  
 (h)    Foreign Nationals.  Options may be granted to Participants who are foreign nationals or employed outside the United States on such terms and
conditions different from those specified in the Plan as the Committee considers necessary or advisable to achieve the purposes of the Plan or to comply with applicable laws. 
  
 (i)    Amendment of Option.  The Committee may amend, modify or terminate any outstanding Option in any respect, provided that
the Participant’s consent to such action shall be required unless the Committee determines that the action, taking into account any related action, would not materially and adversely affect the Participant. In no event shall any issued and
outstanding option be repriced to a lower option price at any time during the term of such option, without the prior affirmative vote of a majority of shares of stock of the Company present at a stockholders meeting in person or by proxy and
entitled to vote thereon. Any amendment or repeal of this provision shall require the affirmative vote of a majority of shares of stock of the Company present at a stockholders meeting in person or by proxy and entitled to vote thereon.

  
 9.    Miscellaneous 
  
 (a)    No Right To Employment.  No person shall have any claim or right to be granted an Option. Each employee of the Company or
any of its Affiliates is an employee-at-will (that is to say that either the Participant or the Company or any Affiliate may terminate the employment relationship at any time for any reason or no reason at all) unless, and only to the extent,
provided in a written employment agreement for a specified term executed by the chief executive officer of the Company or his duly authorized designee or the authorized signatory of any Affiliate. Neither the adoption, maintenance, nor operation of
the Plan nor any Option hereunder shall confer upon any employee of the Company or of any Affiliate any right with respect to the continuance of his/her employment by the Company or any such Affiliate nor shall they interfere with the right of the
Company (or Affiliate) to terminate any employee at any time or otherwise change the terms of employment, including, without limitation, the right to promote, demote or otherwise re-assign any employee from one position to another within the Company
or any Affiliate. 
  

	

  

 
 5 

  
 (b)    Effect of
Grant.  Participant shall not earn any Options granted hereunder until such time as all the conditions put forth herein which are required to be met in order to exercise the Option have been fully satisfied. 

 
 (c)    No Rights As Stockholder.  Subject to the provisions of the applicable
Option, no Participant or Designated Beneficiary shall have any rights as a stockholder with respect to any shares of Common Stock to be distributed under the Plan until he or she becomes the holder thereof. 
  
 (d)    Amendment of Plan.  The Board may amend, suspend or terminate the Plan or any portion
thereof at any time. 
  
 (e)    Governing Law.  The provisions of the
Plan shall be governed by and interpreted in accordance with the laws of Massachusetts. 
  
 (f)    Complete Agreement.  The Plan constitutes the complete understanding of the parties regarding the subject matter hereof and supersedes all prior contemporaneous agreements of the
parties, whether written or oral. This Plan may be amended, altered, or modified only by a writing, specifying such amendment, alteration or modification, signed by both parties. 
  

 
 6 

  
 APPENDIX I 
  
 
	 No.                     
 	 	  	 	                     
Shares
 

 
  
 PARAMETRIC TECHNOLOGY CORPORATION 
 1997 Nonstatutory Stock Option Plan 
  
 Non
statutory Stock Option Certificate 
  
 Parametric Technology Corporation (the “Company”), a Massachusetts
corporation, hereby grants to the person named below an option to purchase shares of Common Stock, $0.01 par value, of the Company (the “Option”) under and subject to the Company’s 1997 Nonstatutory Stock Option Plan (the
“Plan”) exercisable on the following terms and conditions set forth below and those attached hereto and in the Plan: 
  
 
	 Name of Optionholder:     
 	    	                                      
                    
 
	 Address:
 	    	                                      
                    
 
	  	    	                                      
                    
 
	 
	 Social Security No.     
 	    	                                      
                    
 
	 
	 Number of Shares:
 	    	                                     
               
 
	 Option Price:     
 	    	  
	                                     
                                        
                                        
     
 	    	                                     
               
 
	 Date of Grant:     
 	    	                                       
          
 

 
  
 
	 Exercisability Schedule: After
 	 	 ,          , as to
             shares,
 	 	  
	                         after
 	 	 ,          , as to
             additional shares,
 	 	  
	                         after
 	 	 ,          , as to
             additional shares,
 	 	  
	                         after
 	 	 ,          , as to
             additional shares,
 	 	  
	                         after
 	 	 ,          , as to
             additional shares,
 	 	  
	 Expiration Date:     
 	 	  	 	                                      
                                        
  
 

 
  
 provided that Optionee’s employment by the Company or by a parent or subsidiary
corporation of the Company, in the case of the employees, or consulting arrangement, in the case of consultants, has not terminated at or prior to the opening of business on the date discussed above and provided that this Option may not be exercised
as to any shares after the expiration of ten years from the date of grant. 
  
 This Option shall not be treated as an
Incentive Stock Option under section 422 of the Internal Revenue Code of 1986, as amended (the “Code”). 
  
 By acceptance of this Option and returning one signed copy to the Company, the Optionholder agrees to the terms and conditions set forth herein and those attached hereto and in the Plan. 
  
 Optionee hereby consents to the processing and transfer of all personal data relating to him/her, including data relating to this
option grant, by and between the Company, its subsidiaries and certain outside vendors as may be needed in the operation of the Company’s or its subsidiaries’ business. 
  
 
	 OPTIONHOLDER
 	 	  	 	 PARAMETRIC TECHNOLOGY CORPORATION
 
	 
	 By:
 	 	  	 	  	 	 By:
 	 	  
	  	 	 
	 	  	 	  	 	 

	  	 	  	 	  	 	  	 	  

 

  
 PARAMETRIC TECHNOLOGY CORPORATION 1997 NONSTATUTORY STOCK OPTION PLAN

  
 Nonstatutory Stock Option Terms And Conditions 
  
 1.    Plan Incorporated by Reference.  This Option is issued pursuant to the terms of the Plan and may be amended as provided in the
Plan. Capitalized terms used and not otherwise defined in this certificate have the meanings given to them in the Plan. This certificate does not set forth all of the terms and conditions of the Plan, which are incorporated herein by reference. The
Committee administers the Plan and its determinations regarding the operation of the Plan are final and binding. Copies of the Plan may be obtained upon written request without charge from the Corporate Counsel of the Company. 

 
 2.    Option Price.  The price to be paid for each share of Common Stock issued upon
exercise of the whole or any part of this Option is the Option Price set forth on the face of this certificate. 
  
 3.    Exercisability Schedule.  This Option may be exercised at any time and from time to time for the number of shares and in accordance with the exercisability schedule set forth on the face of
this certificate, but only for the purchase of whole shares. This Option may not be exercised as to any shares after the Expiration Date. 
  
 4.    Method of Exercise.  To exercise this Option, the Optionholder shall deliver written notice of exercise to the Company specifying the number of shares with respect to which the
Option is being exercised accompanied by payment of the Option Price for such shares in cash, by certified check or in such other form, including shares of Common Stock of the Company valued at their Fair Market Value on the date of delivery or a
payment commitment of a financial or brokerage institution, as the Committee may approve. Promptly following such notice, the Company will deliver to the Optionholder a certificate representing the number of shares with respect to which the Option
is being exercised. 
  
 5.    No Right To Employment.  No person shall have any
claim or right to be granted an Option. Each employee of the Company or any of its Affiliates is an employee-at-will (that is to say that either the Participant or the Company or any Affiliate may terminate the employment relationship at any time
for any reason or no reason at all) unless, and only to the extent, provided in a written employment agreement for a specified term executed by the chief executive officer of the Company or his duly authorized designee or the authorized signatory of
any Affiliate. Neither the adoption, maintenance, nor operation of the Plan nor any Option hereunder shall confer upon any employee of the Company or of any Affiliate any right with respect to the continuance of his/her employment by the Company or
any such Affiliate nor shall they interfere with the right of the Company (or Affiliate) to terminate any employee at any time or otherwise change the terms of employment, including, without limitation, the right to promote, demote or otherwise
re-assign any employee from one position to another within the Company or any Affiliate. 
  
 6.    Effect of Grant.  Participant shall not earn any Options granted hereunder until such time as all the conditions put forth herein and in the Plan which are required to be met in order to
exercise the Option have been fully satisfied. 
  
 7.    Recapitalization, Mergers,
Etc.  As provided in the Plan, in the event of corporate transactions affecting the Company’s outstanding Common Stock, the number and kind of shares subject to this Option and the exercise price hereunder shall be equitably
adjusted. If such transaction involves a consolidation or merger of the Company with another entity, the sale or exchange of all or substantially all of the assets of the Company or a reorganization or liquidation of the Company, then in lieu of the
foregoing, the Committee may upon written notice to the Optionholder provide that this Option shall terminate on a date not less than 20 days after the date of such notice unless theretofore exercised. In connection with such notice, the Committee
may in its discretion accelerate or waive any deferred exercise period. 
  
 8.    Option Not
Transferable.  This Option is not transferable by the Optionholder otherwise than by will or the laws of descent and distribution, and is exercisable, during the Optionholder’s lifetime, only by the Optionholder. The naming of a
Designated Beneficiary does not constitute a transfer. 
  
 9.    Termination of Employment or
Engagement.  If the Optionholder’s status as an employee or consultant of (a) the Company, (b) an Affiliate, or (c) a corporation (or parent or subsidiary corporation of such corporation) issuing or assuming a stock option in a
transaction to which section 424(a) of the Code applies, is terminated for any reason (voluntary or involuntary) and the period of exercisability for a particular Option following such termination has not been specified by the Board, each such
Option then held 

  
 by that Participant shall expire to the extent not previously exercised ninety (90) calendar days after
such Participant’s employment or engagement is terminated, except that— 
  
 (a)    If the Participant is on military, sick leave or other bona fide leave of absence (such as temporary employment by the federal government), his or her employment or engagement with the Company will
be treated as continuing intact if the period of such leave does not exceed ninety (90) days, or, if longer, so long as the Participant’s right to reemployment or the survival of his or her service arrangement with the Company is guaranteed
either by statute or by contract; otherwise, the Participant’s employment or engagement will be deemed to have terminated on the 91st day of such leave. 
  
 (b)    If the Participant’s employment is terminated by reason of his or her retirement from the Company at normal retirement age,
each Option then held by the Participant, to the extent exercisable at retirement, may be exercised by the Participant at any time within three (3) months after such retirement unless terminated earlier by its terms. 
  
 (c)    If the Participant’s employment or engagement is terminated by reason of his or her death,
each Option then held by the Participant, to the extent exercisable at the date of death, may be exercised at any time within one year after that date (unless terminated earlier by its terms) by the person(s) to whom the Participant’s option
rights pass by will or by the applicable laws of descent and distribution. 
  
 (d)    If the Participant’s employment or engagement is terminated by reason of his or her becoming permanently and totally disabled, each Option then held by the Participant, to the extent exercisable upon
the occurrence of permanent and total disability, may be exercised by the Participant at any time within one (1) year after such occurrence unless terminated earlier by its terms. For purposes hereof, an individual shall be deemed to be
“permanently and totally disabled” if he or she is unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or which has lasted or
can be expected to last for a continuous period of not less than twelve (12) months. Any determination of permanent and total disability shall be made in good faith by the Company on the basis of a report signed by a qualified physician.

  
 10.    Compliance with Securities Laws.  It shall be a condition to the
Optionholder’s right to purchase shares of Common Stock hereunder that the Company may, in its discretion, require (a) that the shares of Common Stock reserved for issuance upon the exercise of this Option shall have been duly listed, upon
official notice of issuance, upon any national securities exchange or automated quotation system on which the Company’s Common Stock may then be listed or quoted, (b) that either (i) a registration statement under the Securities Act of 1933
with respect to the shares shall be in effect, or (ii) in the opinion of counsel for the Company, the proposed purchase shall be exempt from registration under that Act and the Optionholder shall have made such undertakings and agreements with the
Company as the Company may reasonably require, and (c) that such other steps, if any, as counsel for the Company shall consider necessary to comply with any law applicable to the issue of such shares by the Company shall have been taken by the
Company or the Optionholder, or both. The certificates representing the shares purchased under this Option may contain such legends as counsel for the Company shall consider necessary to comply with any applicable law. 
  
 11.    Payment of Taxes.  The Optionholder shall pay to the Company, or make provision satisfactory
to the Company for payment of, any taxes required by law to be withheld with respect to the exercise of this Option. The Committee may, in its discretion, require any other Federal or state taxes imposed on the sale of the shares to be paid by the
Optionholder. In the Committee’s discretion, such tax obligations may be paid in whole or in part in shares of Common Stock, including shares retained from the exercise of this Option, valued at their Fair Market Value on the date of delivery.
The Company and its Affiliates may, to the extent permitted by law, deduct any such tax obligations from any payment of any kind otherwise due to the Optionholder. 
  
 Adopted February 13, 1997

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