Document:

Exhibit 4.1

 Exhibit 4.1 
 AMENDED AND RESTATED 
 CERTIFICATE OF INCORPORATION 
 OF 
 ICF INTERNATIONAL, INC.

 Pursuant to Section 242 and 245 of the General Corporation Law of the State of Delaware, ICF International, Inc., a Delaware
corporation originally formed as ICF Consulting Group Holdings, LLC on April 21, 1999 and converted to a corporation formerly named ICF Consulting Group Holdings, Inc. by the filing of a Certificate of Conversion and its original Certificate of
Incorporation in the Office of the Secretary of State of the State of Delaware on April 7, 2003 and renamed ICF International, Inc. by the filing of a Certificate of Ownership and Merger in the Office of the Secretary of State of the State of
Delaware on April 21, 2006, hereby amends and restates its Certificate of Incorporation by its President and Chief Executive Officer and hereby certifies as follows: 
 FIRST: Name. The name of this corporation is ICF International, Inc. (the “Corporation”). 
 SECOND: Registered Office and Agent. The address of the Corporation’s registered office in the State of Delaware is to be located at 2711 Centerville Road, Suite 400 in the City of Wilmington, County of New Castle, State
of Delaware 19808. Its registered agent at such address is Corporation Service Company. 
 THIRD: Purpose. The purpose of the
Corporation is to engage in any lawful act or activity for which corporations may be organized under the Delaware General Corporation Law, as amended from time to time (the “DGCL”). 
 FOURTH: Capital Stock. 
 Section 4.1. Authorized Shares. The total number of shares of stock which the Corporation shall have authority to issue is seventy-five million (75,000,000), seventy million (70,000,000) of which shall be shares of Common
Stock with a par value of $0.001 per share and five million (5,000,000) of which shall be shares of Preferred Stock with a par value of $0.001 per share. 
 Section 4.2. Reclassification of Common Stock. Each share of authorized Common Stock, par value $0.01 per share, issued and outstanding or standing in the name of the Corporation at the close of business
on the date of filing in the Office of the Secretary of State of the State of Delaware of this Amended and Restated Certificate of Incorporation shall thereupon automatically, and without further action by the Corporation or the holders thereof, be
reclassified and changed into one (1) validly issued, fully paid and nonassessable share of Common Stock, par value $0.001 per share. 
 Section 4.3. Preferred Stock. 
 (a) Board Authorized to Fix Terms. The Board of Directors is
authorized, subject to limitations prescribed by law, by resolution or resolutions to provide for the issuance of shares of Preferred Stock in one or more series, and, by filing a certificate when 

 
required by the applicable law of the State of Delaware, to establish from time to time the number of shares to be included in each such series and to fix
the designation, powers, preferences and rights of the shares of each such series and the qualifications, limitations or restrictions thereof. The authority of the Board with respect to each series shall include, but not be limited to, determination
of the following: 
 (i) the number of shares constituting that series, including the authority to increase or decrease such
number, and the distinctive designation of that series; 
 (ii) the dividend rate on the shares of that series, whether
dividends shall be cumulative, and, if so, the date or dates from which they shall be cumulative and the relative rights of priority, if any, in the payment of dividends on shares of that series; 
 (iii) the voting rights, if any, of the shares of that series in addition to the voting rights provided by law and the terms of any such
voting rights; 
 (iv) the terms and conditions, if any, upon which shares of that series shall be convertible or exchangeable
for shares of any other class or classes of stock of the Corporation or other entity, including provision for adjustment of the conversion or exchange rate upon the occurrence of such events as the Board of Directors shall determine; 
 (v) the right, if any, of the Corporation to redeem shares of that series and the terms and conditions of such redemption, including the
date or dates upon or after which they shall be redeemable and the amount per share payable in case of redemption, which amount may vary according to different conditions and different redemption dates; 
 (vi) the obligation, if any, of the Corporation to retire shares of that series pursuant to a retirement or sinking fund or fund of a
similar nature for the redemption or purchase of shares of that series and the terms and conditions of such obligation; 
 (vii) the rights of the shares of that series in the event of voluntary or involuntary liquidation, dissolution or winding up of the Corporation, and the relative rights of priority, if any, in the payment of shares of that series; and

 (viii) any other rights, preferences and limitations of the shares of that series as may be permitted by law. 

(b) Dividend Preference. Dividends, if any, on outstanding shares of Preferred Stock shall be paid or declared and set apart
for payment before any dividends shall be paid or declared and set apart for payment on shares of Common Stock with respect to the same dividend period. 
  

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 (c) Relative Liquidation Preference. If, upon any voluntary or involuntary
liquidation, dissolution or winding up of the Corporation, the assets available for distribution to holders of shares of Preferred Stock of all series shall be insufficient to pay such holders the full preferential amount to which they are entitled,
then such assets shall be distributed ratably among the shares of all series of preferred stock in accordance with their respective priorities and preferential amounts (including unpaid cumulative dividends, if any) payable with respect thereto.

 (d) Reissuance of Preferred Stock. Subject to the conditions or restrictions on issuance set forth in the resolution
or resolutions adopted by the Board of Directors providing for the issue of any series of shares of Preferred Stock, shares of Preferred Stock of any series that have been redeemed or repurchased by the Corporation (whether through the operation of
a sinking fund or otherwise) or that, if convertible or exchangeable, have been converted or exchanged in accordance with their terms, shall be retired and have the status of authorized and unissued shares of Preferred Stock of the same series and
may be reissued as a part of the series of which they were originally a part or may, upon the filing of an appropriate certificate with the Delaware Secretary of State, be reissued as part of a new series of shares of Preferred Stock to be created
by resolution or resolutions of the Board of Directors or as part of any other series of shares of Preferred Stock. 
 FIFTH:
Elimination of Certain Liability of Directors. No director of the Corporation shall be personally liable to the Corporation or its stockholders for monetary damages for breach of fiduciary duty as a director except (a) for any breach of
the director’s duty of loyalty to the Corporation or its stockholders, (b) for acts or omissions not in good faith or which involve intentional misconduct or a knowing violation of law, (c) under Section 174 of the DGCL or
(d) for any transaction from which the director derived an improper personal benefit. If the DGCL is hereafter amended to permit a corporation to further eliminate or limit the liability of a director of a corporation, then the liability of a
director of the Corporation, in addition to the circumstances in which a director is not personally liable as set forth in the preceding sentence, shall, without further action of the directors or stockholders, be further eliminated or limited to
the fullest extent permitted by the DGCL as so amended. Neither any amendment, repeal, or modification of this Article Fifth, nor the adoption or amendment of any other provision of this Certificate of Incorporation or the bylaws of the Corporation
inconsistent with this Article Fifth, shall adversely affect any right or protection provided hereby with respect to any act or omission occurring prior to the date when such amendment, repeal, modification, or adoption became effective. 

SIXTH: Indemnification. 
 Section 6.1. Right to Indemnification. Each person who was or is a party or is threatened to be made a party to or is involved in any threatened, pending or completed action, suit, proceeding or alternative dispute resolution
procedure, whether (a) civil, criminal, administrative, investigative or otherwise, (b) formal or informal or (c) by or in the right of the Corporation (collectively, a “proceeding”), by reason of the fact that he or she, or
a person of whom he or she is the legal representative, is or was a director, officer, employee or agent of the 

  

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Corporation or is or was serving at the request of the Corporation as a director, manager, officer, partner, trustee, employee or agent of another foreign or
domestic corporation or of a foreign or domestic limited liability company, partnership, joint venture, trust or other enterprise, including service with respect to employee benefit plans, whether the basis of such proceeding is alleged action in an
official capacity as such a director, officer, employee or agent of the Corporation or in any other capacity while serving as such other director, manager, officer, partner, trustee, employee or agent, shall be indemnified and held harmless by the
Corporation against all judgments, penalties and fines incurred or paid, and against all expenses (including attorneys’ fees) and settlement amounts incurred or paid, in connection with any such proceeding, except in relation to matters as to
which the person did not act in good faith and in a manner the person reasonably believed to be in or not opposed to the best interests of the Corporation, and, with respect to any criminal action or proceeding, had reasonable cause to believe the
person’s conduct was unlawful. The termination of any proceeding by judgment, order, settlement, conviction, or upon a plea of nolo contendere or its equivalent, shall not, of itself, create a presumption that (a) the person did not act in
good faith and in a manner which the person reasonably believed to be in or not opposed to the best interests of the Corporation, (b) with respect to any criminal action or proceeding, the person had reasonable cause to believe that the
person’s conduct was unlawful or (c) the person was not successful on the merits or otherwise in defense of the proceeding or of any claim, issue or matter therein. If the DGCL is hereafter amended to provide for indemnification rights
broader than those provided by this Section 6.1, then the persons referred to in this Section 6.1 shall be indemnified and held harmless by the Corporation to the fullest extent permitted by the DGCL as so amended (but, in the case of any
such amendment, only to the extent that such amendment permits the Corporation to provide broader indemnification rights than permitted prior to such amendment). 
 Section 6.2. Determination of Entitlement to Indemnification. A determination as to whether a person who is a director or officer of the Corporation at the time of the determination is entitled to be
indemnified and held harmless under Section 6.1 shall be made (a) by a majority vote of the directors who are not parties to such proceeding, even though less than a quorum, (b) by a committee of such directors designated by majority
vote of such directors, even though less than a quorum, (c) if there are no such directors, or if such directors so direct, by independent legal counsel in a written opinion, or (d) by the stockholders. A determination as to whether a
person who is not a director or officer of the Corporation at the time of the determination is entitled to be indemnified and held harmless under Section 6.1 shall be made by or as directed by the Board of Directors of the Corporation.

 Section 6.3. Mandatory Advancement of Expenses. The right to indemnification conferred in this Article Sixth shall include the
right to require the Corporation to pay the expenses (including attorneys’ fees) incurred in defending any such proceeding in advance of its final disposition; provided, however, that, if the Board of Directors so determines, an
advancement of expenses incurred by an indemnitee in his or her capacity as a director or officer of the Corporation (but not in any other capacity in which service was or is rendered by such indemnitee, including, without limitation, service to an
employee benefit plan) shall be made only upon delivery to the Corporation of an undertaking, by or on behalf of such indemnitee, to repay all amounts so advanced if it shall be finally determined that such indemnitee is not entitled to be
indemnified for such expenses under Section 6.1 or otherwise. 
  

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 Section 6.4. Non-Exclusivity of Rights. The right to indemnification and the advancement of
expenses conferred in this Article Sixth shall not be exclusive of any other right which any person may have or hereafter acquire under any statute, any provision of this Certificate of Incorporation or of any bylaw, agreement, or insurance policy
or arrangement, or any vote of stockholders or disinterested directors, or otherwise. The Board of Directors is expressly authorized to adopt and enter into indemnification agreements with, and obtain insurance for, directors and officers.

 Section 6.5. Effect of Amendment. Neither any amendment, repeal, or modification of this Article Sixth, nor the adoption or
amendment of any other provision of this Certificate of Incorporation or the bylaws of the Corporation inconsistent with this Article Sixth, shall adversely affect any right or protection provided hereby with respect to any act or omission occurring
prior to the date when such amendment, repeal, modification, or adoption became effective. 
 SEVENTH: Miscellaneous. The
following provisions are inserted for the management of the business and for the conduct of the affairs of the Corporation and for the purpose of creating, defining, limiting and regulating powers of the Corporation and its directors and
stockholders: 
 Section 7.1 Classification, Election and Term of Office of Directors. The directors, other than those who may be
elected by the holders of any class or series of stock having a preference over the Common Stock as to dividends or upon liquidation, shall be classified with respect to the time for which they severally hold office into three classes, as nearly
equal in number as possible. At each annual meeting of stockholders successors to the class of directors whose term expires at that meeting shall be elected by plurality vote of all votes cast at such meeting to hold office for a term expiring at
the annual meeting of stockholders held in the third year following the year of their election, subject, however, to their prior death, resignation or removal from office as provided by law. If the number of directors is changed, any increase or
decrease shall be apportioned among the classes so as to maintain a number of directors in each class as nearly equal as possible. Any additional director of any class elected to fill a vacancy resulting from an increase in such class shall hold
office for a term that shall coincide with the remaining term of such class. No decrease in the number of directors shall change the term of any director in office at the time of such decrease. A director shall hold office until the annual meeting
for the year in which the director’s term expires and such director’s successor shall be elected and qualified, subject, however, to such director’s prior death, resignation or removal from office. 
 Section 7.2 No Preemptive Rights. The holders of the Corporation’s capital stock shall have no preemptive rights to subscribe for any
shares of any class of stock of the Corporation whether now or hereafter authorized. 
 Section 7.3 Manner of Election of
Directors. Elections of directors need not be by written ballot unless the bylaws of the Corporation shall so provide. 
  

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 Section 7.4 Adoption and Amendment of Bylaws. The Board of Directors shall have power to make
and adopt bylaws with respect to the organization, operation and government of the Corporation and, subject to such restrictions as may be set forth in the bylaws, from time to time to change, alter, amend or repeal the same, but the stockholders of
the Corporation may make and adopt additional bylaws and, subject to such restrictions as may be set forth in the bylaws, may change, alter, amend or repeal any bylaw whether adopted by them or otherwise. 
 Section 7.5 Consents of Stockholders Must Be Unanimous. Any action required or permitted to be taken at any annual or special meeting of the
stockholders may be taken without a meeting, without prior notice and without a vote, in accordance with Section 228 of the DGCL, provided that one or more consents in writing, setting forth the action so taken, shall be signed by the
holders of all of the outstanding stock entitled to vote thereon in accordance with the bylaws, provided that any action permitted by this Certificate of Incorporation to be taken by the holders of any class or series of stock having
preference over the Common Stock as to dividends or upon liquidation, voting separately as a class, may be taken by one or more consents in writing signed by the holders of such stock having such number of votes sufficient to take such action in
accordance with the applicable terms of such stock. 
 Section 7.6 Vote Required to Amend Certificate of Incorporation.
Notwithstanding any other provision of this Certificate of Incorporation or the bylaws of the Corporation or any provision of law which might otherwise permit a lesser vote, but in addition to any affirmative vote of the holders of any particular
class or series of stock required by law, this Certificate of Incorporation, the terms of any class or series of stock having preference over the Common Stock as to dividends or upon liquidation, or the bylaws, the affirmative vote of the holders of
capital stock representing at least 66 2/3% of the Corporation’s voting power entitled to vote generally in the election of directors, voting as a single class, shall be required to alter, amend, adopt any provision inconsistent with or
repeal Articles Fifth and Sixth and Section 7.1 of this Certificate of Incorporation. 
 Section 7.7 Severability. In
the event any provision (or portion thereof) of this Certificate of Incorporation shall be found to be invalid, prohibited, or unenforceable for any reason, the remaining provisions (or portions thereof) of this Certificate of Incorporation shall be
deemed to remain in full force and effect, and shall be construed as if such invalid, prohibited, or unenforceable provision had been stricken herefrom or otherwise rendered inapplicable, it being the intent of the Corporation and its stockholders
that each such remaining provision (or portion thereof) of this Certificate of Incorporation remain, to the fullest extent permitted by law, applicable and enforceable as to all stockholders, notwithstanding any such finding. 
 Section 7.8 Reservation of Right to Amend Certificate of Incorporation. The Corporation reserves the right to amend, alter, change or repeal
any provision contained in this Certificate of Incorporation, in the manner now or hereafter prescribed by statute or herein, and all rights conferred upon stockholders herein are granted subject to this reservation. 
  

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 IN WITNESS WHEREOF, the Corporation has caused this Amended and Restated Certificate of Incorporation to
be signed by Sudhakar Kesavan, President and Chief Executive Officer, as of the 23rd day of September, 2006. 
  

			
	
	   /s/ Sudhakar Kesavan

	 By:
	 	 Sudhakar Kesavan

	 Its:
	 	 President and Chief Executive Officer

  

 - 7 -Stock Compensation Plan Agreement

 EXHIBIT 10.1 
 STOCK COMPENSATION PLAN AGREEMENT 
 This Stock Compensation Plan Agreement (the
“Agreement”) dated as of October 6, 2006 by and between North American Technologies Group, Inc., a Delaware corporation (the “Company”) and Neal Kaufman, its chief executive officer (“Executive”), each of whom is
separately referred to as a “Party” and together as the “Parties” 
 WITNESSETH 
 WHEREAS, effective as of January 1, 2006, the Parties entered into an Employment Agreement (the “Employment Agreement”) whereby the
Company agreed to employ Executive, and Executive agreed to serve, as chief executive officer of the Company, on the terms and subject to the conditions set forth therein; 
 WHEREAS, pursuant to Section 5(b) of the Employment Agreement, Executive was granted options under the Company’s 2005 Stock Option Plan
(the “Plan”) to purchase an aggregate of 4.8 million shares of the Company’s common stock (the “January Options”), 2.4 million shares of which had an exercise price of $0.18 per share and 2.4 million shares of
which had an exercise price of $0.30 per share (the “January Exercise Prices”), which January Options are subject to the vesting schedule and other terms and conditions set forth in the Employment Agreement; 
 WHEREAS, it was the agreement and intent of the Parties that Executive receive options to purchase a number of shares equal to four percent of the
outstanding shares of common stock of the Company on a fully diluted basis as of the effective date of the Employment Agreement, which should have resulted in the grant to Executive of options to purchase an aggregate of 9 million shares of the
Company’s common stock on the basis of the approximately 225 million shares of common stock outstanding on a fully diluted basis at that time; 
 WHEREAS, the Company has corrected this error in calculation in part by granting to Executive options to purchase an additional 4.2 million shares of the Company’s common stock (the “October
Options”) on October 6, 2006 (the “October Options Grant Date”), which October Options have been granted under the Plan and have the same terms and provisions and are subject to the same vesting schedule as the January Options,
but which have an exercise price equal to 100% of the fair market value of the Company’s common stock on the October Options Grant Date (the “October Exercise Price”); 
 WHEREAS, the October Exercise Price is greater than the January Exercise Prices, and thus in order for Executive to exercise options to purchase an
aggregate of 9 million shares of the Company’s common stock, Executive will need to pay an additional amount above that which was originally contemplated by the Parties, which additional amount is equal to the difference between the
October Exercise Price and the January Exercise Prices multiplied by the number of October Options (the “Delta”), as calculated in Section 1 below; 
 WHEREAS, the Company has agreed to reimburse Executive for the extra costs associated with the Delta on prescribed dates set forth in Section 3 hereof by issuing the number of shares of Company common
stock equal in value to that portion of the Delta which is payable on such dates (the “Restricted Shares”) divided by the closing price per share of the Company’s common stock as quoted on the securities trading market on which the
Company’s common stock is then publicly traded which has the greatest average daily trading volume (the “Share Price”) on such respective dates or, if no Share Price is quoted for such date, then on the next day upon which a Share
Price is so quoted; and 
 WHEREAS, Executive has agreed to accept the October Options and the Restricted Shares on the terms and
subject to the conditions set forth herein and in the Plan and related Stock Option Agreement, and to release the Company from any further claim related to the failure by the Company to issue options in January 2006 sufficient to allow Executive to
purchase an aggregate of 9 million shares of the Company’s common stock; 
 NOW THEREFORE, in consideration of the mutual
promises and consideration herein expressed, and agreeing to be lawfully bound hereby, the Parties do hereby agree as follows: 
 1.
Calculation of Delta. The amount of the Delta is $420,000, calculated as set forth below: 
  

															
	Vesting
Date	 	No. of Option
Shares	 	January Exercise
Price	 	October Exercise
Price	 	Difference Per
Share	 	Amount of
Delta
	10/06/06	 	2,100,000	 	$	0.18	 	$	0.34	 	$	0.16	 	$	336,000
	12/31/07	 	1,050,000	 	$	0.30	 	$	0.34	 	$	0.04	 	 	42,000
	12/31/08	 	1,050,000	 	$	0.30	 	$	0.34	 	$	0.04	 	 	42,000
	TOTAL	 	4,200,000	 			 			 			 	$	420,000

 The Company hereby grants, issues and awards to Executive, at no cost to Executive, and Executive hereby
accepts, the amount of the Delta payable in Restricted Shares at the Share Price on the Payment Dates as set forth below. 
 2. Vesting of
Restricted Shares. Subject to Section 4 hereof, Executive shall be entitled to receive Restricted Shares representing that portion of the Delta becoming vested pursuant to the vesting schedule set forth below but payable on the Payment
Date. Vesting of the right to receive the Delta shall be contingent upon the vesting of the right to receive an equal percentage of the October Options. Unless provided otherwise in this Agreement, upon Executive’s termination of employment
with the Company for any reason, including without limitation, death, disability, retirement, termination by the Company with or without cause, or voluntary resignation by Executive for any reason or no reason, the right to receive payment of
the outstanding Delta in any form, including Restricted Shares, shall immediately terminate as to any portion which has not vested. 
  

				
	 Vesting Date
	  	% of Delta Vested	 
	 October Options Grant Date
	  	80	%
	 December 31, 2007
 December 31, 2008
	  	10
10	%
%

 3. Payment of Restricted Shares. The Company shall issue the Restricted Shares to Executive
on the earlier to occur of: (1) the predetermined scheduled dates set forth in Section 3(i) below (each a “Scheduled Payment Date”) or (2) any of the events listed in Section 3(ii) below (each an “Early Payment
Date,” and together with the Scheduled Payment Dates, the “Payment Dates”). 
 (i) If no Early Payment Date has occurred, the
Restricted Shares shall be issued on each Scheduled Payment Date in the amounts calculated as set forth below: 
 (A) on the first trading day
of each calendar quarter beginning with January 1, 2008 and ending with October 1, 2008, the Company shall issue a number of Restricted Shares equal to (x) the greater of 6.25% of the Delta or $25,000, (y) divided by the Share Price
on each such Scheduled Payment Date, rounded to the nearest whole Restricted Share; 
 (B) on the first trading day of each of the first
three calendar quarters beginning with January 1, 2009 and ending with July 1, 2009, the Company shall issue a number of Restricted Shares equal to (x) the greater of $25,000 or 25% of the remaining balance of the Delta as of
January 1, 2009, divided by (y) the Share Price on each such Scheduled Payment Date, rounded to the nearest whole Restricted Share; and 
 (C) on October 1, 2009, the Company shall issue a number of Restricted Shares equal to the remaining balance of the Delta divided by the Share Price on that Payment Date, rounded to the nearest whole Restricted Share. 
 (ii) Upon an Early Payment Date, Executive, Executive’s estate or any person who acquires the right to receive the Restricted Shares as a
conservator or guardian or otherwise, will be entitled to receive Restricted Shares equal to (x) the full amount of the Delta that has vested pursuant to Section 2 less any amounts that have already been distributed pursuant to
Section 3(i), divided by (y) the Share Price on such Early Payment Date, rounded to the nearest whole Restricted Share. An Early Payment Date shall be any of the following: 

 (A) the date upon which a “change in the ownership or effective control of the Company or a change
in the ownership of a substantial portion of the assets of the Company” occurs (as defined in Section 1.409A-3(g)(5) of the Code of Federal Regulations); 
 (B) the date which is six months following the Executive’s “Separation From Service” (as defined in Section 1.409A-1(h)(1) of the Code of Federal Regulations); 
 (C) the date of Executive’s death; 
 (D) the date upon which Executive becomes “Disabled” (as defined in Section 409A(a)(2)(C) of the Code); or 
 (E) an
“Unforeseeable Emergency” (as defined in Section 409A(a)(2)(B)(ii) of the Code); provided, however, that the value of the amount of Restricted Shares that may be issued may not exceed the amount allowed under
Section 409A(a)(2)(B)(ii)(II) of the Code and the regulations issued thereunder relating to limitation on the amount of distributions in the case of an Unforeseeable Emergency. 
 (iii) If an Early Payment Date occurs prior to the Delta becoming fully vested such that the Delta cannot be fully distributed to Executive on such Early
Payment Date, then Executive shall be entitled to receive, on the first Payment Date following the vesting of any portion of the Delta (the “Closest Payment Date”), Restricted Shares equal to (x) the amount of the Delta that has
become vested since the Early Payment Date, divided by (y) the Share Price on such Closest Payment Date, rounded to the nearest whole Restricted Share. Any portion of the Delta that still remains unvested and thus undistributed on the Closest
Payment Date shall continue to be distributed in accordance with this Section 3(iii). 
 Except for the convention of rounding to the
nearest whole Restricted Share described in this Section 3, in no event shall the Company issue Restricted Shares having a value in excess of the amount of the Delta which is vested as of the applicable Payment Date. The Restricted Shares, when
so issued, shall be the duly authorized, validly issued, fully paid and nonassessable shares of the Company’s common stock outstanding, with no further restrictions on transfer placed on them by the Company, but subject to those restrictions
imposed by federal and state securities laws. 
 4. Termination of Employment by Vesting Date. In the event Executive is not the
President and Chief Executive Officer of the Company for any reason on a vesting date set forth in Section 2, the portion of the Delta to be vested on that vesting date shall not vest and shall lapse. Notwithstanding the foregoing, nothing in
this Section or in this Agreement shall be interpreted as relieving the Company of its obligation to pay any portion of the Delta that has vested pursuant to Section 2 but which remains unpaid for any reason. 
 5. Registration of Restricted Shares. The Restricted Shares may be issued only if they are duly registered under the Securities Act of 1933 and
applicable state securities laws, or unless their issuance is exempt from such registrations. The Company will register the sale of the Restricted Shares on a registration statement on Form S-8 filed by it with the Securities and Exchange
Commission, which registration statement shall cover both the Restricted Shares and all of the shares issuable under the Plan, and will use its best efforts to maintain that registration statement effective for so long as Executive holds the
Restricted Shares or unexercised options (including but not limited to the January Options and the October Options). 
 6. No Employment
Commitment. Executive acknowledges that neither the grant of the Restricted Shares nor the execution of this Agreement by the Company shall be interpreted or construed as imposing upon the Company an obligation to retain his services for any
stated period of time, which employment shall continue to be governed by the terms of Executive’s Employment Agreement. 
 7.
Employment Tax. The Company shall reimburse to Executive in cash (i) the amount of employment taxes due and payable by him on that portion of the Delta which vests on each vesting date as set forth in Section 2 hereof, and
(ii) the amount of taxes payable by Executive on such reimbursed amount (including, without limitation, any income tax, employment tax or excise tax), assuming that Executive is liable to pay such applicable taxes based on the highest marginal
rate for each such tax, up to a maximum of $15,000 in the aggregate. The parties intend as a 

 result of the application of this Section 7, that Executive shall not be responsible for bearing up to $15,000 of
the costs in employment taxes on the value of the Delta which he is entitled to receive. The amount of reimbursement due Executive hereunder shall be remitted by the Company to the relevant tax authorities for the benefit of Executive at such times
required by applicable law governing the Company’s withholding obligations, and any remaining amount shall be paid to Executive no later than ten business days thereafter. 
 8. 10b5-1 Plan. The Company shall cooperate in the establishment by Executive of a plan for the sale by Executive of the Restricted Shares, and
any other shares desired to be disposed of by Executive, in an orderly manner and at predetermined dates and amounts under the provisions of Rule 10b5-1 of the Securities Exchange Act of 1934. Executive acknowledges and agrees that the establishment
of such a plan, and any amendment or termination thereof, must be made while he is not in possession of material, inside information regarding the Company. 
 9. Release. Executive, on behalf of himself and his heirs, successors and assigns, does hereby forever release, discharge and acquit the Company, and each of its affiliates, officers, directors, attorneys,
agents and employees and their respective successors, heirs, and assigns, of and from any and all claims, demands, obligations, liabilities, breaches of contract and breaches of duty of every type or character which in any way arise out of, are
connected with or related to the failure by the Company to issue options in January 2006 sufficient to allow Executive to purchase an aggregate of 9 million shares of the Company’s common stock. The foregoing release shall not apply to
breaches of any covenants made by the Parties in this Agreement, the Employment Agreement, any Stock Option Award Agreement documenting the grant of the January Options, the October Options or otherwise, or any other document delivered in connection
with any of the foregoing. 
 10. Non-Transferability. The rights granted to Executive hereunder are transferable and assignable by
Executive only to the extent Executive’s rights under Executive’s Stock Option Award Agreement for the January Options or October Options are transferable or assignable. 
 IN WITNESS WHEREOF, this Agreement is executed and entered into effective on the day and year first above expressed. 
  

			
	NORTH AMERICAN TECHNOLOGIES GROUP, INC.
		
	By:	 	 /s/ John T. Corcia

		 	 John T. Corcia,
 Chairman of the Compensation
Committee

	
	EXECUTIVE
		
		 	 /s/ Neal P. Kaufman

		 	Neal P. Kaufman

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