Document:

DEFINITIVE AGREEMENT

This Definitive Agreement dated as of the 11th day of April 2002

BETWEEN:

               DURO ENZYME SOLUTIONS INC., a corporation formed under the laws
               of the State of Nevada having an address at 20436 Fraser Highway,
               Langley, BC, Canada, V3A 4G2

AND:

               APC EXPORT, INC., a company formed under the laws of Alaska
               having an address at 300 54th Avenue, Anchorage, Alaska, USA,
               99518

WHEREAS:

Duro Enzyme Solutions, Inc. ("DESI") and APC Export, Inc, ("APC")(each a "Party"
and  collectively  the "Parties") enter into a Definitive Agreement in which the
Parties  agree to form a Limited Liability Corporation ("Alaska LLC"), under the
laws  of  the  State of Alaska, to be jointly owned, 50% by DESI and 50% by APC.

This  Definitive  Agreement  is  based upon the following conditions between the
Parties.  The  parties  reserve  the right to include additional representations
further  in  this  process,  if  additional  information becomes known to either
party.

a)     DESI and APC will form and incorporate Alaska LLC, a joint venture
partnership, with 50% ownership by DESI and 50% ownership by APC.

b)     DESI will provide three (3) Directors of Alaska LLC.

c)     APC will provide three (3) Directors of Alaska LLC.

d)     The Directors of Alaska LLC will appoint Officers of Alaska LLC.

e)     APC will provide one load of bulk, pure Alaskan humus ("Humus") for
transport by barge from Alaska to a port of choice of Alaska LLC.

f)     APC will be responsible for all activities involved and costs incurred
in the acquisition and delivery of one load of Humus to the designated barge in
Alaska for transport to port of choice of Alaska LLC.

g)     DESI will provide the financing for all transportation costs of one load
of Humus to be transported by barge from Alaska to port of choice of Alaska LLC.

h)     DESI will provide the expertise  to market and sell the barge of Humus.

                                                                               1
<PAGE>
i)     Alaska LLC will have full ownership of the aforementioned load of Humus.

j)     Alaska LLC will market and sell the Humus following delivery by barge to
port of choice of Alaska LLC. Upon successful selling the product, proceeds from
the  sale  will be used by Alaska LLC to finance additional barge loads of Humus
to  be acquired and transported from Alaska to port of choice of Alaska LLC, for
subsequent  marketing  and  sale  by  Alaska  LLC.

k)     Subsequent loads of Humus will be fully owned by Alaska LLC and will be
provided,  marketed  and  sold  by  Alaska  LLC.

l)     The management of Alaska  LLC  will  choose,  organize,  and implement
strategies to arrange financing to launch the business plan of Alaska LLC.

m)     APC will transfer all ownership of rights to all know-how, expertise,
studies, humus extraction rights, excavation rights, exclusive rights for use of
port  facilities,  marketing  rights, real estate, leases, facilities, products,
technologies,  permits,  licenses,  agreements,  letters of  intent,  letters of
understanding,  contracts,  and  any  and  all  other APC assets, as well as all
benefits  of  any  and  all  strategic  alliances,  to  Alaska  LLC.

n)     DESI and APC will  sign  non-compete  and  non-circumvent  agreements
protecting  the exclusive rights of Alaska LLC to each members rights, resources
and  knowledge  which  are dedicated to, acquired by and developed by Alaska LLC
throughout  the  life  of  Alaska  LLC.

o)     DESI will allocate US$10-million  to Alaska LLC subject to the business
potential,  profitability,  truth,  and success of the business plan and the due
diligence  provided  and  represented  by  APC  to  DESI.

Based  on  the  foregoing  conditions,  the Parties will execute this Definitive
Agreement.

DESI represents and warrants that:

       i. It is duly organized and in good standing;
      ii. It has the authority to enter in to this Definitive Agreement;
     iii. It requires no consents or approvals and this Definitive Agreement is
          not  in violation of any other agreements; and
      iv. It is in compliance with all applicable permits and laws,

APC shall represent and warrant that:

       i. It is duly organized and in good standing;

                                                                               2
<PAGE>
      ii. It has the authority to enter in to this Definitive Agreement
     iii. It requires no consents or approvals and this Definitive Agreement is
          not in violation of any other agreements;
      iv. It is not a party to any legal proceeding; and
       v. It is in compliance with all applicable permits and laws.

This Letter of Agreement is valid through 5:00pm PST on April 11, 2002.

Agreed to by:

/s/ Perry Smith
------------------------------------------------
Perry Smith,
President, Duro Enzyme Solutions Inc.

Agreed to by:

/s/ Richard Strahl
------------------------------------------------
Richard Strahl
President, APC Export, Inc.

Agreed to by:

/s/ Ray L. Smith
------------------------------------------------
Richard Strahl
Vice President of Operations, APC Export, Inc.

                                                                               3
<PAGE>Prepared by R.R. Donnelley Financial -- Amended and Restated 1997 Stock Incentive Plan

 EXHIBIT 4.1 
  
 PROLONG INTERNATIONAL CORPORATION 
 AMENDED AND RESTATED 1997 
 STOCK INCENTIVE PLAN 
 (February 12, 2002) 
  
 This AMENDED AND RESTATED 1997 STOCK INCENTIVE PLAN (the “Plan”) is hereby established by PROLONG INTERNATIONAL CORPORATION, a Nevada corporation (the “Company”), and adopted by its Board of Directors as
of the 4th day of June, 1997 (the “Effective Date”). 
  
 ARTICLE 1. 
  
 PURPOSES OF THE PLAN 
  
 1.1  Purposes.    The purposes of the Plan are (a) to enhance the Company’s ability to attract and retain the services of qualified employees, officers and directors (including
non-employee officers and directors), and consultants and other service providers upon whose judgment, initiative and efforts the successful conduct and development of the Company’s business largely depends, and (b) to provide additional
incentives to such persons or entities to devote their utmost effort and skill to the advancement and betterment of the Company, by providing them an opportunity to participate in the ownership of the Company and thereby have an interest in the
success and increased value of the Company. 
  
 ARTICLE 2.  

 
 DEFINITIONS 
  
 For purposes of this Plan, the following terms shall have the meanings indicated: 
  
 2.1  Administrator.    “Administrator” means the Board or, if the Board delegates responsibility for any matter to the Committee, the
term Administrator shall mean the Committee. 
  
 2.2  Affiliated
Company.    “Affiliated Company” means any “parent corporation” or “subsidiary corporation” of the Company, whether now existing or hereafter created or acquired, as
those terms are defined in Sections 424(e) and 424(f) of the Code, respectively. 
  
 2.3  Board.    “Board” means the Board of Directors of the Company. 
  
 2.4  Cause.    “Cause” means, with respect to a Participant’s Continuous Service, the termination
by the Company of such Continuous Service for any of the following reasons: 
  
 (a)  The
continued, unreasonable refusal or omission by the Participant to perform any material duties required of him by the Company if such duties are consistent with duties customary for the position held with the Company; 
  
 (b)  Any material act or omission by the Participant involving malfeasance or gross negligence in the
performance of Participant’s duties to, or material deviation from any of the policies or directives of, the Company; 
  
 (c)  Conduct on the part of Participant which constitutes the breach of any statutory or common law duty of loyalty to the Company; or 
 

 1 

  
 (d)  Any illegal act by Participant which materially
and adversely affects the business of the Company or any felony committed by Participant, as evidenced by conviction thereof, provided that the Company may suspend Participant with pay while any allegation of such illegal or felonious act is
investigated. 
  
 2.5  Change in
Control.    “Change in Control” shall mean (i) the acquisition, directly or indirectly, by any person or group (within the meaning of Section 13(d)(3) of the Securities Exchange Act of 1934, as amended)
of the beneficial ownership of securities of the Company possessing more than fifty percent (50%) of the total combined voting power of all outstanding securities of the Company; (ii) a merger or consolidation in which the Company is not the
surviving entity, except for a transaction in which the holders of the outstanding voting securities of the Company immediately prior to such merger or consolidation hold, in the aggregate, securities possessing more than fifty percent (50%) of the
total combined voting power of all outstanding voting securities of the surviving entity immediately after such merger or consolidation; (iii) a reverse merger in which the Company is the surviving entity but in which securities possessing more than
fifty percent (50%) of the total combined voting power of all outstanding voting securities of the Company are transferred to or acquired by a person or persons different from the persons holding those securities immediately prior to such merger;
(iv) the sale, transfer or other disposition (in one transaction or a series of related transactions) of all or substantially all of the assets of the Company; or (v) the approval by the shareholders of a plan or proposal for the liquidation or
dissolution of the Company. 
  
 2.6  Code.    “Code” means the Internal Revenue Code of 1986, as amended from time to time. 
  
 2.7  Committee.    “Committee” means a committee of two or more members of the Board appointed to
administer the Plan, as set forth in Section 7.1 hereof. 
  
 2.8  Common
Stock.    “Common Stock” means the Common Stock, $0.001 par value of the Company, subject to adjustment pursuant to Section 4.2 hereof. 
  
 2.9  Disability.    “Disability” means permanent and total disability as defined in Section
22(e)(3) of the Code. The Administrator’s determination of a Disability or the absence thereof shall be conclusive and binding on all interested parties. 
  
 2.10  Effective Date.    “Effective Date” means the date on which the Plan is adopted by the Board, as set forth on the first
page hereof. 
  
 2.11  Exercise
Price.    “Exercise Price” means the purchase price per share of Common Stock payable upon exercise of an Option. 
  
 2.12  Fair Market Value.    “Fair Market Value” on any given date means the value of one share of Common Stock, determined as
follows: 
  
 (a)  If the Common Stock is then listed or admitted to trading on a NASDAQ
market system or a stock exchange which reports closing sale prices, the Fair Market Value shall be the closing sale price on the date of valuation on such NASDAQ market system or principal stock exchange on which the Common Stock is then listed or
admitted to trading, or, if no closing sale price is quoted on such day, then the Fair Market Value shall be the closing sale price of the Common Stock on such NASDAQ market system or such exchange on the next preceding day for which a closing sale
price is reported. 
 

 2 

  
 (b)  If the Common Stock is not then listed or admitted
to trading on a NASDAQ market system or a stock exchange which reports closing sale prices, the Fair Market Value shall be the average of the closing bid and asked prices of the Common Stock in the over-the-counter market on the date of valuation.

  
 (c)  If neither (a) nor (b) is applicable as of the date of valuation, then the Fair
Market Value shall be determined by the Administrator in good faith using any reasonable method of evaluation, which determination shall be conclusive and binding on all interested parties. 
  
 2.13  Good Reason.    “Good Reason” means with respect to a Participant’s voluntary
termination of Continuous Service if such termination is the result of any of the following: 
  
 (a)  A reduction in the amount of his base compensation pay in effect at the time of a Change in Control; 
  
 (b)  The taking of any action by the Company that would substantially diminish the aggregate value of the benefits provided the Participant under the Participant’s medical, health,
accident, disability insurance, life insurance, thrift and retirement plans in which he was participating on the date of a Change in Control, other than any such reduction which is (i) required by law, (ii) implemented in connection with a general
concessionary arrangement affecting all employees or affecting the group of employees (of which the Participant is a member) or (iii) generally applicable to all beneficiaries of such plans; 
  
 (c)  A reduction in duties and responsibilities which results in the Participant no longer having duties customary for the position held with the
Company at the time of a Change in Control; or 
  
 (d)  The Company materially breaches any
provision of the Participant’s Stock Option Agreement or Stock Purchase Agreement. 
  
 2.14  Incentive Option.    “Incentive Option” means any Option designated and qualified as an “incentive stock option” as defined in Section 422 of
the Code. 
  
 2.15  Incentive Option
Agreement.    “Incentive Option Agreement” means an Option Agreement with respect to an Incentive Option. 
  
 2.16  NASD Dealer.    “NASD Dealer” means a broker-dealer that is a member of the National Association of Securities Dealers,
Inc. 
  
 2.17  Nonqualified
Option.    “Nonqualified Option” means any Option that is not an Incentive Option. To the extent that any Option designated as an Incentive Option fails in whole or in part to qualify as an Incentive
Option, including, without limitation, for failure to meet the limitations applicable to a 10% Shareholder or because it exceeds the annual limit provided for in Section 5.6 below, it shall to that extent constitute a Nonqualified Option.

  
 2.18  Nonqualified Option
Agreement.    “Nonqualified Option Agreement” means an Option Agreement with respect to a Nonqualified Option. 
  
 2.19  Offeree.    “Offeree” means a Participant to whom a Right to Purchase has been offered or who has acquired Restricted
Stock under the Plan. 
 

 3 

  
 2.20  Option.    “Option” means any option to purchase Common Stock granted pursuant to the Plan. 
  
 2.21  Option Agreement.    “Option Agreement” means the written agreement entered into between
the Company and the Optionee with respect to an Option granted under the Plan. 
  
 2.22  Optionee.    “Optionee” means a Participant who holds an Option. 
  
 2.23  Participant.    “Participant” means an individual or entity who holds an Option, a Right to Purchase or Restricted Stock
under the Plan. 
  
 2.24  Purchase
Price.    “Purchase Price” means the purchase price per share of Restricted Stock payable upon acceptance of a Right to Purchase. 
  
 2.25  Restricted Stock.    “Restricted Stock” means shares of Common Stock issued pursuant to
Article 6 hereof, subject to any restrictions and conditions as are established pursuant to such Article 6. 
  
 2.26  Right to Purchase.    “Right to Purchase” means a right to purchase Restricted Stock granted to an Offeree pursuant to Article 6 hereof. 

 
 2.27  Service Provider.    “Service Provider” means
a consultant or other person or entity who provides services to the Company or an Affiliated Company and who the Administrator authorizes to become a Participant in the Plan. 
  
 2.28  Stock Purchase Agreement.    “Stock Purchase Agreement” means the written agreement entered
into between the Company and the Offeree with respect to a Right to Purchase offered under the Plan. 
  
 2.29  10% Shareholder.    “10% Shareholder” means a person who, as of a relevant date, owns or is deemed to own (by reason of the attribution rules applicable
under Section 424(d) of the Code) stock possessing more than 10% of the total combined voting power of all classes of stock of the Company or of an Affiliated Company. 
  
 ARTICLE 3. 
  
 ELIGIBILITY 

 
 3.1  Incentive Options.    Officers and other key employees of
the Company or of an Affiliated Company (including members of the Board if they are employees of the Company or of an Affiliated Company) are eligible to receive Incentive Options under the Plan. 
  

3.2  Nonqualified Options and Rights to Purchase.    Officers and other key employees of the Company
or of an Affiliated Company, members of the Board (whether or not employed by the Company or an Affiliated Company), and Service Providers are eligible to receive Nonqualified Options or Rights to Purchase under the Plan. 
  
 3.3  Limitation on Shares.    In no event shall any Participant be
granted Options or Rights to Purchase in any one calendar year pursuant to which the aggregate number of shares of Common Stock that may be acquired thereunder exceeds 500,000 shares. 
 

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 ARTICLE 4. 
  

PLAN SHARES 
  
 4.1  Shares Subject to the Plan.    A total of 4,000,000 shares of Common Stock may be issued under the Plan, subject to adjustment as to the number and kind of shares
pursuant to Section 4.2 hereof. For purposes of this limitation, in the event that (a) all or any portion of any Option or Right to Purchase granted or offered under the Plan can no longer under any circumstances be exercised, or (b) any shares of
Common Stock are reacquired by the Company pursuant to an Incentive Option Agreement, Nonqualified Option Agreement or Stock Purchase Agreement, the shares of Common Stock allocable to the unexercised portion of such Option or such Right to
Purchase, or the shares so reacquired, shall again be available for grant or issuance under the Plan. 
  
 4.2  Changes in Capital Structure.    In the event that the outstanding shares of Common Stock are hereafter increased or decreased or changed into or exchanged for a
different number or kind of shares or other securities of the Company by reason of a recapitalization, stock split, combination of shares, reclassification, stock dividend, or other change in the capital structure of the Company, then appropriate
adjustments shall be made by the Administrator to the aggregate number and kind of shares subject to this Plan, and the number and kind of shares and the price per share subject to outstanding Option Agreements, Rights to Purchase and Stock Purchase
Agreements in order to preserve, as nearly as practical, but not to increase, the benefits to Participants. 
  
 ARTICLE 5. 
  
 OPTIONS 
  

5.1  Option Agreement.    Each Option granted pursuant to this Plan shall be evidenced by an Option
Agreement which shall specify the number of shares subject thereto, the Exercise Price per share, and whether the Option is an Incentive Option or Nonqualified Option. As soon as is practical following the grant of an Option, an Option Agreement
shall be duly executed and delivered by or on behalf of the Company to the Optionee to whom such Option was granted. Each Option Agreement shall be in such form and contain such additional terms and conditions, not inconsistent with the provisions
of this Plan, as the Administrator shall, from time to time, deem desirable, including, without limitation, the imposition of any rights of first refusal and resale obligations upon any shares of Common Stock acquired pursuant to an Option
Agreement. Each Option Agreement may be different from each other Option Agreement. 
  
 5.2  Exercise Price.    The Exercise Price per share of Common Stock covered by each Option shall be determined by the Administrator, subject to the following: (a) the
Exercise Price of an Incentive Option shall not be less than 100% of Fair Market Value on the date the Incentive Option is granted, (b) the Exercise Price of a Nonqualified Option shall not be less than 85% of Fair Market Value on the date the
Nonqualified Option is granted, and (c) if the person to whom an Incentive Option is granted is a 10% Shareholder on the date of grant, the Exercise Price shall not be less than 110% of Fair Market Value on the date the Option is granted.

  
 5.3  Payment of Exercise Price.    Payment of
the Exercise Price shall be made upon exercise of an Option and may be made, in the discretion of the Administrator, subject to any legal restrictions, by: (a) cash; (b) check; (c) the surrender of shares of Common Stock owned by the Optionee that
have been held by the Optionee for at least six (6) months, which surrendered shares shall be valued at Fair Market Value as of the date of such exercise; (d) the Optionee’s promissory note in a form and on terms acceptable to the
Administrator; (e) the cancellation of indebtedness of 
 

 5 

  
 the Company to the Optionee; (f) the waiver of compensation due or accrued to the Optionee for services
rendered; (g) provided that a public market for the Common Stock exists, a “same day sale” commitment from the Optionee and an NASD Dealer whereby the Optionee irrevocably elects to exercise the Option and to sell a portion of the shares
so purchased to pay for the Exercise Price and whereby the NASD Dealer irrevocably commits upon receipt of such shares to forward the Exercise Price directly to the Company; (h) provided that a public market for the Common Stock exists, a
“margin” commitment from the Optionee and an NASD Dealer whereby the Optionee irrevocably elects to exercise the Option and to pledge the shares so purchased to the NASD Dealer in a margin account as security for a loan from the NASD
Dealer in the amount of the Exercise Price, and whereby the NASD Dealer irrevocably commits upon receipt of such shares to forward the Exercise Price directly to the Company; or (i) any combination of the foregoing methods of payment or any other
consideration or method of payment as shall be permitted by applicable corporate law. 
  
 5.4  Term and Termination of Options.    The term and provisions for termination of each Option shall be as fixed by the Administrator, but no Option may be exercisable
more than ten (10) years after the date it is granted. An Incentive Option granted to a person who is a 10% Shareholder on the date of grant shall not be exercisable more than five (5) years after the date it is granted. 
  
 5.5  Vesting and Exercise of Options.    Each Option shall vest and
become exercisable in one or more installments at such time or times and subject to such conditions, including without limitation the achievement of specified performance goals or objectives, as shall be determined by the Administrator.

  
 5.6  Annual Limit on Incentive Options.    To
the extent required for “incentive stock option” treatment under Section 422 of the Code, the aggregate Fair Market Value (determined as of the time of grant) of the Common Stock shall not, with respect to which Incentive Options granted
under this Plan and any other plan of the Company or any Affiliated Company become exercisable for the first time by an Optionee during any calendar year, exceed $100,000. 
  
 5.7  Nontransferability of Options.    No Option shall be assignable or transferable except by will or the
laws of descent and distribution, and during the life of the Optionee shall be exercisable only by such Optionee; provided, however, that, in the discretion of the Administrator, any Option may be assigned or transferred in any manner which an
“incentive stock option” is permitted to be assigned or transferred under the Code. 
  
 5.8  Rights as Shareholder.    An Optionee or permitted transferee of an Option shall have no rights or privileges as a shareholder with respect to any shares covered
by an Option until such Option has been duly exercised and certificates representing shares purchased upon such exercise have been issued to such person. 
 

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 ARTICLE 6. 
  

RIGHTS TO PURCHASE 
  
 6.1  Nature of Right to Purchase.    A Right to Purchase granted to an Offeree entitles the Offeree to purchase, for a Purchase Price determined by the Administrator,
shares of Common Stock subject to such terms, restrictions and conditions as the Administrator may determine at the time of grant (“Restricted Stock”). Such conditions may include, but are not limited to, continued employment or the
achievement of specified performance goals or objectives. 
  
 6.2  Acceptance of Right
to Purchase.    An Offeree shall have no rights with respect to the Restricted Stock subject to a Right to Purchase unless the Offeree shall have accepted the Right to Purchase within ten (10) days (or such longer
or shorter period as the Administrator may specify) following the grant of the Right to Purchase by making payment of the full Purchase Price to the Company in the manner set forth in Section 6.3 hereof and by executing and delivering to the Company
a Stock Purchase Agreement. Each Stock Purchase Agreement shall be in such form, and shall set forth the Purchase Price and such other terms, conditions and restrictions of the Restricted Stock, not inconsistent with the provisions of this Plan, as
the Administrator shall, from time to time, deem desirable. Each Stock Purchase Agreement may be different from each other Stock Purchase Agreement. 
  
 6.3  Payment of Purchase Price.    Subject to any legal restrictions, payment of the Purchase Price upon acceptance of a Right to
Purchase Restricted Stock may be made, in the discretion of the Administrator, by: (a) cash; (b) check; (c) the surrender of shares of Common Stock owned by the Offeree that have been held by the Offeree for at least six (6) months, which
surrendered shares shall be valued at Fair Market Value as of the date of such exercise; (d) the Offeree’s promissory note in a form and on terms acceptable to the Administrator; (e) the cancellation of indebtedness of the Company to the
Offeree; (f) the waiver of compensation due or accrued to the Offeree for services rendered; or (g) any combination of the foregoing methods of payment or any other consideration or method of payment as shall be permitted by applicable corporate
law. 
  
 6.4  Rights as a Shareholder.    Upon
complying with the provisions of Section 6.2 hereof, an Offeree shall have the rights of a shareholder with respect to the Restricted Stock purchased pursuant to the Right to Purchase, including voting and dividend rights, subject to the terms,
restrictions and conditions as are set forth in the Stock Purchase Agreement. Unless the Administrator shall determine otherwise, certificates evidencing shares of Restricted Stock shall remain in the possession of the Company until such shares have
vested in accordance with the terms of the Stock Purchase Agreement. 
  
 6.5  Restrictions.    Shares of Restricted Stock may not be sold, assigned, transferred, pledged or otherwise encumbered or disposed of except as specifically provided
in the Stock Purchase Agreement. In the event of termination of a Participant’s employment, service as a director of the Company or Service Provider status for any reason whatsoever (including death or disability), the Stock Purchase Agreement
may provide, in the discretion of the Administrator, that the Company shall have the right, exercisable at the discretion of the Administrator, to repurchase (i) at the original Purchase Price, any shares of Restricted Stock which have not vested as
of the date of termination, and (ii) at Fair Market Value, any shares of Restricted Stock which have vested as of such date, on such terms as may be provided in the Stock Purchase Agreement. 
 

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 6.6  Vesting of Restricted
Stock.    The Stock Purchase Agreement shall specify the date or dates, the performance goals or objectives which must be achieved, and any other conditions on which the Restricted Stock may vest. 

 
 6.7  Dividends.    If payment for shares of Restricted Stock
is made by promissory note, any cash dividends paid with respect to the Restricted Stock may be applied, in the discretion of the Administrator, to repayment of such note. 
  
 6.8  Nonassignability of Rights.    No Right to Purchase shall be assignable or transferable except by will
or the laws of descent and distribution or as otherwise provided by the Administrator. 
  
 ARTICLE 7.

  
 ADMINISTRATION OF THE PLAN 
  
 7.1  Administrator.    Authority to control and manage the operation and administration of the Plan shall
be vested in the Board, which may delegate such responsibilities in whole or in part to a committee consisting of two (2) or more members of the Board (the “Committee”). Members of the Committee may be appointed from time to time by, and
shall serve at the pleasure of, the Board. As used herein, the term “Administrator” means the Board or, with respect to any matter as to which responsibility has been delegated to the Committee, the term Administrator shall mean the
Committee. 
  
 7.2  Powers of the
Administrator.    In addition to any other powers or authority conferred upon the Administrator elsewhere in the Plan or by law, the Administrator shall have full power and authority: (a) to determine the persons
to whom, and the time or times at which, Incentive Options or Nonqualified Options shall be granted and Rights to Purchase shall be offered, the number of shares to be represented by each Option and Right to Purchase and the consideration to be
received by the Company upon the exercise thereof; (b) to interpret the Plan; (c) to create, amend or rescind rules and regulations relating to the Plan; (d) to determine the terms, conditions and restrictions contained in, and the form of, Option
Agreements and Stock Purchase Agreements; (e) to determine the identity or capacity of any persons who may be entitled to exercise a Participant’s rights under any Option or Right to Purchase under the Plan; (f) to correct any defect or supply
any omission or reconcile any inconsistency in the Plan or in any Option Agreement or Stock Purchase Agreement; (g) to accelerate the vesting of any Option or release or waive any repurchase rights of the Company with respect to Restricted Stock;
(h) to extend the exercise date of any Option or acceptance date of any Right to Purchase; (i) to provide for rights of first refusal and/or repurchase rights; (j) to amend outstanding Option Agreements and Stock Purchase Agreements to provide for,
among other things, any change or modification which the Administrator could have provided for upon the grant of an Option or Right to Purchase or in furtherance of the powers provided for herein; and (k) to make all other determinations necessary
or advisable for the administration of the Plan, but only to the extent not contrary to the express provisions of the Plan. Any action, decision, interpretation or determination made in good faith by the Administrator in the exercise of its
authority conferred upon it under the Plan shall be final and binding on the Company and all Participants. 
  
 7.3  Limitation on Liability.    No employee of the Company or member of the Board or Committee shall be subject to any liability with respect to duties under the Plan
unless the person acts fraudulently or in bad faith. To the extent permitted by law, the Company shall indemnify each member of the Board or Committee, and any employee of the Company with duties under the Plan, who was or is a party, or is
threatened to be made a party, to any threatened, pending or completed 
 

 8 

 proceeding, whether civil, criminal, administrative or investigative, by reason of such person’s conduct in the performance of duties under
the Plan. 
  
 ARTICLE 8. 
  
 CHANGE IN CONTROL 
  
 8.1  Change in Control.    In order to preserve a Participant’s rights in the event of a Change in Control of the Company, (i) the time period relating to the
exercise or realization of all outstanding Options, Rights to Purchase and Restricted Stock shall automatically accelerate immediately prior to the consummation of such Change in Control, if the Administrator does not take the action described in
subitem (C) of this Section 8.1, and if such action is taken, such automatic acceleration shall then occur if, within twelve (12) months of the consummation of a Change in Control, a Participant’s Continuous Service is terminated without Cause
or pursuant to the Participant’s voluntary termination for Good Reason, and (ii) with respect to Options and Rights to Purchase, the Administrator in its discretion may, at any time an Option or Right to Purchase is granted, or at any time
thereafter, take one or more of the following actions: (A) provide for the purchase or exchange of each Option or Right to Purchase for an amount of cash or other property having a value equal to the difference, or spread, between (x) the value of
the cash or other property that the Participant would have received pursuant to such Change in Control transaction in exchange for the shares issuable upon exercise of the Option or Right to Purchase had the Option or Right to Purchase been
exercised immediately prior to such Change in Control transaction and (y) the Exercise Price of such Option or the Purchase Price under such Right to Purchase, (B) adjust the terms of the Options and Rights to Purchase in a manner determined by the
Administrator to reflect the Change in Control, (C) cause the Options and Rights to Purchase to be assumed, or new rights substituted therefor, by another entity, through the continuance of the Plan and the assumption of outstanding Options and
Rights to Purchase, or the substitution for such Options and Rights to Purchase of new options and new rights to purchase of comparable value covering shares of a successor corporation, with appropriate adjustments as to the number and kind of
shares and Exercise Prices, in which event the Plan and such Options and Rights to Purchase, or the new options and rights to purchase substituted therefor, shall continue in the manner and under the terms so provided, or (D) make such other
provision as the Administrator may consider equitable. If the Administrator does not take any of the forgoing actions, all Options and Rights to Purchase shall terminate upon the consummation of the Change in Control and the Administrator shall
cause written notice of the proposed transaction to be given to all Participants not less than fifteen (15) days prior to the anticipated effective date of the proposed transaction. 
  
 ARTICLE 9. 
  
 AMENDMENT AND
TERMINATION OF THE PLAN 
  
 9.1  Amendments.    The Board may from time to time alter, amend, suspend or terminate the Plan in such respects as the Board may deem advisable. No such alteration,
amendment, suspension or termination shall be made which shall substantially affect or impair the rights of any Participant under an outstanding Option Agreement or Stock Purchase Agreement without such Participant’s consent. The Board may
alter or amend the Plan to comply with requirements under the Code relating to Incentive Options or other types of options which give Optionees more favorable tax treatment than that applicable to Options granted under this Plan as of the date of
its adoption. Upon any such alteration or amendment, any outstanding Option granted hereunder may, if the Administrator so determines and if permitted by applicable law, be subject to the more favorable tax treatment afforded to an Optionee pursuant
to such terms and conditions. 
 

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 9.2    Plan
Termination.    Unless the Plan shall theretofore have been terminated, the Plan shall terminate on the tenth (10th) anniversary of the Effective Date and no Options or Rights to Purchase may be granted under the
Plan thereafter, but Option Agreements, Stock Purchase Agreements and Rights to Purchase then outstanding shall continue in effect in accordance with their respective terms. 
  
 ARTICLE 10. 
  
 TAX WITHHOLDING

  
 10.1    Withholding.    The
Company shall have the power to withhold, or require a Participant to remit to the Company, an amount sufficient to satisfy any applicable Federal, state, and local tax withholding requirements with respect to any Options exercised or Restricted
Stock issued under the Plan. To the extent permissible under applicable tax, securities and other laws, the Administrator may, in its sole discretion and upon such terms and conditions as it may deem appropriate, permit a Participant to satisfy his
or her obligation to pay any such tax, in whole or in part, up to an amount determined on the basis of the highest marginal tax rate applicable to such Participant, by (a) directing the Company to apply shares of Common Stock to which the
Participant is entitled as a result of the exercise of an Option or as a result of the purchase of or lapse of restrictions on Restricted Stock or (b) delivering to the Company shares of Common Stock owned by the Participant. The shares of Common
Stock so applied or delivered in satisfaction of the Participant’s tax withholding obligation shall be valued at their Fair Market Value as of the date of measurement of the amount of income subject to withholding. 
  
 ARTICLE 11. 
  
 MISCELLANEOUS 
  
 11.1    Benefits Not
Alienable.    Other than as provided above, benefits under the Plan may not be assigned or alienated, whether voluntarily or involuntarily. Any unauthorized attempt at assignment, transfer, pledge or other
disposition shall be without effect. 
  
 11.2    No Enlargement of Employee
Rights.    This Plan is strictly a voluntary undertaking on the part of the Company and shall not be deemed to constitute a contract between the Company and any Participant to be consideration for, or an inducement
to, or a condition of, the employment of any Participant. Nothing contained in the Plan shall be deemed to give the right to any Participant to be retained as an employee of the Company or any Affiliated Company or to limit the right of the Company
or any Affiliated Company to discharge any Participant at any time. 
  
 11.3    Application of Funds.    The proceeds received by the Company from the sale of Common Stock pursuant to Option Agreements and Stock Purchase
Agreements, except as otherwise provided herein, will be used for general corporate purposes. 
 

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