Document:

Warrant Agreement

 Exhibit 4.1 
  
 WARRANT AGREEMENT 
  
 Dated as of November 4, 2003 
  
 Between 
  
 SYNTROLEUM CORPORATION

  
 and 
  
 AMERICAN STOCK TRANSFER AND TRUST COMPANY 
  
 as Warrant Agent 

 TABLE OF CONTENTS 
  

	 	  	 	  	Page

	 	  	 ARTICLE I
 ISSUANCE, FORM, EXECUTION, DELIVERY AND
 REGISTRATION OF WARRANT CERTIFICATES
	  	 
			
	 Section 1.01
	  	 Issuance of Warrants
	  	1
	 Section 1.02
	  	 Form of Warrant Certificates
	  	1
	 Section 1.03
	  	 Execution of Warrant Certificates
	  	2
	 Section 1.04
	  	 Authentication and Delivery
	  	2
	 Section 1.05
	  	 Temporary Warrant Certificates
	  	3
	 Section 1.06
	  	 Separation of Warrants and Shares
	  	3
	 Section 1.07
	  	 Registration
	  	3
	 Section 1.08
	  	 Registration of Transfers and Exchanges
	  	4
	 Section 1.09
	  	 Lost, Stolen, Destroyed, Defaced or Mutilated Warrant Certificates
	  	6
	 Section 1.10
	  	 Offices for Exercise, etc
	  	7
			
	 	  	 ARTICLE II
 DURATION, EXERCISE OF WARRANTS AND EXERCISE PRICE
	  	 
			
	 Section 2.01
	  	 Duration of Warrants
	  	7
	 Section 2.02
	  	 Exercise, Exercise Price, Settlement and Delivery.
	  	8
	 Section 2.03
	  	 Cancellation of Warrant Certificates.
	  	9
			
	 	  	 ARTICLE III
 OTHER PROVISIONS RELATING TO
 RIGHTS OF HOLDERS OF WARRANTS
	  	 
			
	 Section 3.01
	  	 Enforcement of Rights.
	  	9
			
	 	  	 ARTICLE IV
 CERTAIN COVENANTS OF THE COMPANY
	  	 
			
	 Section 4.01
	  	 Payment of Taxes.
	  	10
	 Section 4.02
	  	 Reservation of Shares.
	  	10
	 Section 4.03
	  	 Registration of Securities.
	  	10
			
	 	  	 ARTICLE V
 ADJUSTMENTS
	  	 
			
	 Section 5.01
	  	 Adjustment of Exercise Price and Number of Shares Issuable
	  	11
	 Section 5.02
	  	 Fractional Interest.
	  	17
	 Section 5.03
	  	 When Adjustment Not Required.
	  	17
	 Section 5.04
	  	 Challenge to Good Faith Determination.
	  	17
	 Section 5.05
	  	 Treasury Stock.
	  	18

	 Section 5.06
	  	 Notices to Warrant Holders.
	  	18
	 Section 5.07
	  	 Par Value of Shares of Common Stock
	  	18
			
	 	  	 ARTICLE VI
 CONCERNING THE WARRANT AGENT
	  	 
			
	 Section 6.01
	  	 Warrant Agent.
	  	19
	 Section 6.02
	  	 Conditions of Warrant Agent’s Obligations.
	  	19
	 Section 6.03
	  	 Resignation and Appointment of Successor.
	  	22
			
	 	  	 ARTICLE VII
 MISCELLANEOUS
	  	 
			
	 Section 7.01
	  	 Amendment.
	  	24
	 Section 7.02
	  	 Notices and Demands to the Company and Warrant Agent.
	  	24
	 Section 7.03
	  	 Addresses for Notices to Parties and for Transmission of Documents.
	  	24
	 Section 7.04
	  	 Notices to Holders
	  	25
	 Section 7.05
	  	 Applicable Law.
	  	25
	 Section 7.06
	  	 Obtaining of Governmental Approvals.
	  	25
	 Section 7.07
	  	 Persons Having Rights Under Agreement.
	  	25
	 Section 7.08
	  	 Headings.
	  	25
	 Section 7.09
	  	 Counterparts.
	  	25
	 Section 7.10
	  	 Inspection of Agreement.
	  	25
	 Section 7.11
	  	 Successors.
	  	26
			
	 EXHIBIT A -  
	  	 Form of Warrant Certificate
	  	 
			
	 EXHIBIT B -  
	  	 Certificate To Be Delivered upon Exchange or Registration of Transfer of Warrants
	  	 

  

 ii 

 INDEX OF DEFINED TERMS 
  

	 Defined Term

	  	Section

	 Act
	  	Recitals
	 Additional Shares of Common Stock
	  	5.01(f)
	 Agreement
	  	Recitals
	 Business Day
	  	2.01
	 Common Stock
	  	Recitals
	 Company
	  	Recitals
	 Convertible Securities
	  	5.01(e)
	 Current Market Value
	  	5.01(c)
	 Definitive Warrants
	  	1.02
	 Distribution
	  	5.01(f)
	 Effective Date
	  	Recitals
	 Election to Exercise
	  	2.02(b)
	 Excluded Shares
	  	5.01(e)
	 Exercisability Date
	  	2.02(a)
	 Exercise Date
	  	2.02(d)
	 Exercise Price
	  	2.02(a)
	 Expiration Date
	  	2.01
	 Fully Diluted Basis
	  	5.01(g)
	 Global Warrants
	  	1.02
	 Issuance Date
	  	5.01(e)
	 Majority Holders
	  	5.04
	 Market Value
	  	5.01(c)
	 Nasdaq
	  	5.01(c)
	 Officers’ Certificate
	  	1.08(f)(ii)
	 Options
	  	5.01(e)
	 Registrar
	  	1.07
	 Related Parties
	  	6.02(e)
	 SEC
	  	4.03
	 Shares
	  	1.01
	 Shelf Registration Statement
	  	4.03
	 Underwriter
	  	Recitals
	 Warrant Agent
	  	Recitals
	 Warrant Agent Office
	  	1.10
	 Warrant Certificates
	  	Recitals
	 Warrant Exercise Office
	  	2.02(b)
	 Warrant Register
	  	1.07
	 Warrants
	  	Recitals

  
  

 iii 

 WARRANT AGREEMENT 
  
 WARRANT AGREEMENT (“Agreement”), dated as of November 4, 2003 (the “Effective Date”) by Syntroleum
Corporation, a Delaware corporation (together with any successor thereto, the “Company”), and American Stock Transfer and Trust Company, a New York corporation, as warrant agent (with any successor Warrant Agent, the “Warrant
Agent”). 
  
 WHEREAS, the Company has entered into an
underwriting agreement dated October 30, 2003 with Jefferies & Company, Inc. (the “Underwriter”) in which the Company has agreed, among other things, to sell to the Underwriter in an initial public offering under the Securities Act of
1933, as amended (the “Act”), units consisting in the aggregate of (i) 5,180,000 shares of common stock, par value $.01 per share, of the Company (“Common Stock”) and (ii) 1,554,000 Warrants to purchase an aggregate of 1,554,000
shares of Common Stock of the Company (the “Warrants”), and the certificates evidencing the Warrants being hereinafter referred to as “Warrant Certificates”), in each case subject to adjustment in accordance with the terms
hereof; and 
  
 WHEREAS, the Warrants and the shares of Common
Stock comprising part of the units shall be separately transferable immediately; and 
  
 WHEREAS, the Company desires the Warrant Agent to assist the Company as warrant agent in connection with the issuance, exchange, cancellation, replacement and exercise of the Warrants, and in this Agreement wishes to
set forth, among other things, the terms and conditions on which the Warrants may be issued, exchanged, canceled, replaced and exercised; 
  
 NOW, THEREFORE, the parties hereto agree as follows: 
  
 ARTICLE I 
 ISSUANCE, FORM, EXECUTION,
DELIVERY AND 
 REGISTRATION OF WARRANT CERTIFICATES 
  
 Section 1.01 Issuance of Warrants. Each Warrant Certificate shall evidence the number of Warrants specified therein,
each Warrant evidenced thereby shall represent the right, subject to the provisions contained herein and therein, to purchase from the Company (and the Company shall issue and sell to such holder of the Warrant) one fully paid and non-assessable
share of the Company’s Common Stock (the shares of Common Stock purchasable upon exercise of a Warrant, as adjusted from time to time, being hereinafter referred to as the “Shares” and, where appropriate, such term shall also mean the
other securities or property purchasable and deliverable upon exercise of a Warrant as provided in Article V) at the price specified herein and therein, in each case subject to adjustment as provided herein and therein. 
  
 Section 1.02 Form of Warrant Certificates. Warrant Certificates shall
be issued initially in the form of one or more permanent Global Warrants (the “Global Warrants”), substantially in the form of Exhibit A hereto (including footnote 1 thereto). The Warrant Certificates evidencing the Global Warrants to be
delivered pursuant to this Agreement shall be substantially in the form set forth in Exhibit A attached hereto. Such Global Warrants shall represent such of the outstanding Warrants as shall be specified therein and each shall provide that it shall
represent the aggregate amount of outstanding Warrants from time to time endorsed thereon and that the 

 
aggregate amount of outstanding Warrants represented thereby may from time to time be reduced or increased, as appropriate. Any endorsement of a Global
Warrant to reflect the amount of any increase or decrease in the amount of outstanding Warrants represented thereby shall be made by the Warrant Agent and Depositary (as identified below) in accordance with instructions given by the holder thereof.
The Depository Trust Company shall act as the Depositary with respect to the Global Warrants until a successor shall be appointed by the Company. Upon written request, a Warrant holder may receive from the Warrant Agent definitive warrants
(“Definitive Warrants”) as set forth in Section 1.08 hereof. Definitive Warrants shall be substantially in the form set forth in Exhibit A attached hereto. 
  
 Section 1.03 Execution of Warrant Certificates. The Warrant Certificates shall be executed on behalf of the Company
by its chief executive officer, its president or any vice president and attested by its secretary or an assistant secretary. Such signatures may be the manual or facsimile signatures of the present or any future such officers. Typographical and
other minor errors or defects in any such reproduction of the signature shall not affect the validity or enforceability of any Warrant Certificate that has been duly countersigned and delivered by the Warrant Agent. 
  
 In case any officer of the Company who shall have signed any of the Warrant
Certificates shall cease to be such officer before the Warrant Certificate so signed shall be countersigned and delivered by the Warrant Agent or disposed of by the Company, such Warrant Certificate nevertheless may be countersigned and delivered or
disposed of as though the person who signed such Warrant Certificate had not ceased to be such officer of the Company; and any Warrant Certificate may be signed on behalf of the Company by such persons as, at the actual date of the execution of such
Warrant Certificate, shall be the proper officers of the Company, although at the date of the execution and delivery of this Agreement any such person was not such an officer. 
  
 Section 1.04 Authentication and Delivery. Subject to the immediately following paragraph, Warrant Certificates shall
be authenticated by manual or facsimile signature and dated the date of authentication by the Warrant Agent and shall not be valid for any purpose unless so authenticated and dated. The Warrant Certificates shall be numbered and shall be registered
in the Warrant Register (as defined in Section 1.07 hereof). 
  
 Upon the receipt by the Warrant Agent of a written order of the Company, which order shall be signed by its chief executive officer, its president or any vice president and attested by its secretary or an assistant secretary, and shall
specify the amount of Warrants to be authenticated, whether the Warrants are to be Global Warrants or Definitive Warrants, the date of such Warrants and such other information as the Warrant Agent may reasonably request, without any further action
by the Company, the Warrant Agent is authorized, upon receipt from the Company at any time and from time to time of the Warrant Certificates, duly executed as provided in Section 1.03 hereof, to authenticate the Warrant Certificates and deliver
them. Such authentication shall be by a duly authorized signatory of the Warrant Agent (although it shall not be necessary for the same signatory to sign all Warrant Certificates). 
  
 In case any authorized signatory of the Warrant Agent who shall have authenticated any of the Warrant Certificates shall
cease to be such authorized signatory before the Warrant Certificate shall be disposed of by the Company, such Warrant Certificate nevertheless may be 
  

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delivered or disposed of as though the person who authenticated such Warrant Certificate had not ceased to be such authorized signatory of the Warrant Agent;
and any Warrant Certificate may be authenticated on behalf of the Warrant Agent by such persons as, at the actual time of authentication of such Warrant Certificates, shall be the duly authorized signatories of the Warrant Agent, although at the
time of the execution and delivery of this Agreement any such person is not such an authorized signatory. 
  
 The Warrant Agent’s authentication on all Warrant Certificates shall be in substantially the form set forth in Exhibit A hereto. 
  
 Section 1.05 Temporary Warrant Certificates. Pending the preparation
of definitive Warrant Certificates, the Company may execute, and, upon receipt of an authentication order in accordance with Section 1.04 hereof, the Warrant Agent shall authenticate and deliver, temporary Warrant Certificates, which are printed,
lithographed, typewritten or otherwise produced, substantially of the tenor of the definitive Warrant Certificates in lieu of which they are issued and with such appropriate insertions, omissions, substitutions and other variations as the officers
executing such Warrant Certificates may determine, as evidenced by their execution of such Warrant Certificates. 
  
 If temporary Warrant Certificates are issued, the Company will cause definitive Warrant Certificates to be prepared without unreasonable delay. After the
preparation of definitive Warrant Certificates, the temporary Warrant Certificates shall be exchangeable for definitive Warrant Certificates upon surrender of the temporary Warrant Certificates at any office or agency maintained by the Company for
that purpose pursuant to Section 1.10 hereof. Subject to the provisions of Section 4.01 hereof, such exchange shall be without charge to the holder. Upon surrender for cancellation of any one or more temporary Warrant Certificates, the Company shall
execute, and, upon receipt of an authentication order in accordance with Section 1.04 hereof, the Warrant Agent shall authenticate and deliver in exchange therefor, one or more definitive Warrant Certificates representing in the aggregate a like
number of Warrants. Until so exchanged, the holder of a temporary Warrant Certificate shall in all respects be entitled to the same benefits under this Agreement as a holder of a definitive Warrant Certificate. 
  
 Section 1.06 Separation of Warrants and Shares. The Shares and
Warrants will be separately transferable immediately. 
  
 Section
1.07 Registration. The Company will keep, at the office or agency maintained by the Company for such purpose, a register or registers in which, subject to such reasonable regulations as it may prescribe, the Company shall provide for the
registration of, and registration of transfer and exchange of, Warrants as provided in this Article. Each person designated by the Company from time to time as a person authorized to register the transfer and exchange of the Warrants is hereinafter
called, individually and collectively, the “Registrar”. The Company hereby initially appoints the Warrant Agent as Registrar. Upon written notice to the Warrant Agent and any acting Registrar, the Company, in its sole discretion, may
appoint a successor Registrar for such purposes. 
  

 3 

 Section 1.08 Registration of Transfers and Exchanges. 
  
 (a) Transfer and Exchange of Definitive Warrants. When Definitive
Warrants are presented to the Warrant Agent with a request: 
  
 (i) to register the transfer of the Definitive Warrants; or 
  
 (ii) to exchange such Definitive Warrants for an equal number of Definitive Warrants, 
  
 the Warrant Agent shall register the transfer or make the exchange as requested if the requirements under this Warrant Agreement as set forth in this Section 1.08 hereof for such transactions are met; provided,
however, that the Definitive Warrants presented or surrendered for registration of transfer or exchange shall be duly endorsed or accompanied by a written instruction of transfer in form satisfactory to the Company and the Warrant Agent, duly
executed by the holder thereof or by his attorney, duly authorized in writing. 
  
 (b) Restrictions on Transfer of a Definitive Warrant for a Beneficial Interest in a Global Warrant. A Definitive Warrant may not be transferred for a beneficial interest in a Global Warrant except upon
satisfaction of the requirements set forth below. Upon receipt by the Warrant Agent of a Definitive Warrant, duly endorsed or accompanied by appropriate instruments of transfer, in form satisfactory to the Warrant Agent, together with written
instructions directing the Warrant Agent to make, or to direct the Depositary to make, an endorsement on the Global Warrant to reflect an increase in the aggregate amount of the Warrants represented by the Global Warrant, then the Warrant Agent
shall cancel such Definitive Warrant and cause, or direct the Depositary to cause, in accordance with the standing instructions and procedures existing between the Depositary and the Warrant Agent, the number of Warrants represented by the Global
Warrant to be increased accordingly. If no Global Warrant is then outstanding, the Company shall issue and the Warrant Agent shall authenticate a new Global Warrant in the appropriate amount. 
  
 (c) Transfer and Exchange of Global Warrants. The transfer and
exchange of Global Warrants or beneficial interests therein shall be effected through the Depositary, in accordance with this Section 1.08 and the procedures of the Depositary therefor. 
  
 (d) Transfer of a Beneficial Interest in a Global Warrant for a Definitive Warrant. 
  
 (i) Any person having a beneficial interest in a Global Warrant may upon
request transfer such beneficial interest for a Definitive Warrant. Upon receipt by the Warrant Agent of written instructions or such other form of instructions as is customary for the Depositary from the Depositary or its nominee on behalf of any
person having a beneficial interest in a Global Warrant and upon receipt by the Warrant Agent of a written order or such other form of instructions as is customary for the Depositary or the person designated by the Depositary as having such a
beneficial interest containing registration instructions then the Warrant Agent will cause, in accordance with the standing instructions and procedures existing between the Depositary and the Warrant Agent, the aggregate amount of the Global Warrant
to be reduced and, following such reduction, the Company will execute and, upon receipt of an 
  

 4 

 authentication order in the form of an Officers’ Certificate (as defined), the Warrant Agent will authenticate and
deliver to the transferee a Definitive Warrant. If such beneficial interest is being transferred to the person designated by the Depositary as being the beneficial owner, a certification from such person to that effect (in substantially the form of
Exhibit B hereto) may be required. 
  
 (ii) Definitive Warrants
issued in exchange for a beneficial interest in a Global Warrant pursuant to this Section 1.08(d) shall be registered in such names and in such authorized denominations as the Depositary, pursuant to instructions from its direct or indirect
participants or otherwise, shall instruct the Warrant Agent in writing. The Warrant Agent shall deliver such Definitive Warrants to the persons in whose names such Warrants are so registered. 
  
 (e) Restrictions on Transfer and Exchange of Global Warrants.
Notwithstanding any other provisions of this Warrant Agreement (other than the provisions set forth in subsection (h) of this Section 1.08), a Global Warrant may not be transferred as a whole except by the Depositary to a nominee of the Depositary
or by a nominee of the Depositary to the Depositary or another nominee of the Depositary or by the Depositary or any such nominee to a successor Depositary or a nominee of such successor Depositary. 
  
 (f) Authentication of Definitive Warrants in Absence of Depositary. If
at any time: 
  
 (i) the Depositary for the Warrants notifies
the Company that the Depositary is unwilling or unable to continue as Depositary for the Global Warrant and a successor Depositary for the Global Warrant is not appointed by the Company within 90 days after delivery of such notice; or 
  
 (ii) the Company, at its sole discretion, notifies the Warrant Agent in
writing that it elects to cause the issuance of Definitive Warrants under this Warrant Agreement, 
  
 then the Company will execute, and the Warrant Agent, upon receipt of an officers’ certificate signed by two officers of the Company (one of whom must be the principal executive officer, principal financial
officer or principal accounting officer) (an “Officers’ Certificate”) requesting the authentication and delivery of Definitive Warrants, will authenticate and deliver Definitive Warrants, in an aggregate number equal to the aggregate
number of warrants represented by the Global Warrant, in exchange for such Global Warrant. 
  
 (g) Cancellation and/or Adjustment of a Global Warrant. At such time as all beneficial interests in a Global Warrant have either been exchanged for Definitive Warrants, redeemed, repurchased or canceled, such
Global Warrant shall be returned to or retained and cancelled by the Warrant Agent. At any time prior to such cancellation, if any beneficial interest in a Global Warrant is exchanged for Definitive Warrants, redeemed, repurchased or cancelled, the
number of Warrants represented by such Global Warrant shall be reduced and an endorsement shall be made on such Global Warrant, by the Warrant Agent to reflect such reduction. 
  
 (h) Obligations with Respect to Transfers and Exchanges of Definitive Warrants. 
  

 5 

 (i) To permit registrations of transfers and exchanges, the Company shall execute, at the Warrant
Agent’s request, Definitive Warrants and Global Warrants. Furthermore, the Warrant Agent shall, upon receipt of an authentication order in accordance with Section 1.04 hereof, authenticate Definitive Warrants and Global Warrants. 
  
 (ii) All Definitive Warrants and Global Warrants issued upon any
registration, transfer or exchange of Definitive Warrants or Global Warrants shall be the valid obligations of the Company, entitled to the same benefits under this Warrant Agreement as the Definitive Warrants or Global Warrants surrendered upon the
registration of transfer or exchange. 
  
 (iii) Prior to due
presentment for registration of transfer of any Warrant, the Warrant Agent and the Company may deem and treat the person in whose name any Warrant is registered as the absolute owner of such Warrant, and neither the Warrant Agent nor the Company
shall be affected by notice to the contrary. 
  
 (i) Payment of
Taxes. The Company will pay all documentary stamp taxes attributable to the initial issuance of the Shares upon the exercise of Warrants; provided, however, that the Company shall not be required to pay any tax or taxes which may be payable in
respect of any transfer involved in the issue of any Warrant Certificates or any certificates for the Shares in a name other than that of the registered holder of a Warrant Certificate surrendered upon the exercise of a Warrant, and the Company
shall not be required to issue or deliver such Warrant Certificates unless or until the person or persons requesting the issuance thereof shall have paid to the Company the amount of such tax or shall have established to the satisfaction of the
Company that such tax has been paid. 
  
 Section 1.09 Lost,
Stolen, Destroyed, Defaced or Mutilated Warrant Certificates. Upon receipt by the Company and the Warrant Agent (or any agent of the Company or the Warrant Agent, if requested by the Company) of evidence satisfactory to them of the loss, theft,
destruction, defacement, or mutilation of any Warrant Certificate and of indemnity reasonably satisfactory to them and, in the case of mutilation or defacement, upon surrender thereof to the Warrant Agent for cancellation, then, in the absence of
notice to the Company or the Warrant Agent that such Warrant Certificate has been acquired by a bona fide purchaser or holder in due course, the Company shall execute, and, upon receipt of an authentication order in accordance with Section 1.04
hereof, an authorized signatory of the Warrant Agent shall manually authenticate and deliver, in exchange for or in lieu of the lost, stolen, destroyed, defaced or mutilated Warrant Certificate, a new Warrant Certificate representing a like number
of Warrants, bearing a number or other distinguishing symbol not contemporaneously outstanding. Upon the issuance of any new Warrant Certificate under this Section, the Company may require the payment from the holder of such Warrant Certificate of a
sum sufficient to cover any tax, stamp tax or other governmental charge that may be imposed in relation thereto and any other expenses (including the fees and expenses of the Warrant Agent and the Registrar) in connection therewith. Every substitute
Warrant Certificate executed and delivered pursuant to this Section in lieu of any lost, stolen or destroyed Warrant Certificate shall constitute an additional contractual obligation of the Company, whether or not the lost, stolen or destroyed
Warrant Certificate shall be at any time enforceable by anyone, and shall be entitled to the benefits of (but shall be subject to all the limitations of rights set forth in) this Agreement equally and proportionately with any 
  

 6 

 and all other Warrant Certificates duly executed and delivered hereunder. The provisions of this Section 1.09 are
exclusive with respect to the replacement of lost, stolen, destroyed, defaced or mutilated Warrant Certificates and shall preclude (to the extent lawful) any and all other rights or remedies notwithstanding any law or statute existing or hereafter
enacted to the contrary with respect to the replacement of lost, stolen, destroyed, defaced or mutilated Warrant Certificates. 
  
 The Warrant Agent is hereby authorized to authenticate in accordance with the provisions of this Agreement, and deliver the new Warrant Certificates
required pursuant to the provisions of this Section. 
  
 Section
1.10 Offices for Exercise, etc. So long as any of the Warrants remain outstanding, the Company will designate and maintain in New York City, New York: (a) an office or agency where the Warrant Certificates may be presented for exercise, (b)
an office or agency where the Warrant Certificates may be presented for registration of transfer and for exchange (including the exchange of temporary Warrant Certificates for definitive Warrant Certificates pursuant to Section 1.05 hereof), and (c)
an office or agency where notices and demands to or upon the Company in respect of the Warrants or of this Agreement may be served. The Company may from time to time change or rescind such designation, as it may deem desirable or expedient;
provided, however, that an office or agency shall at all times be maintained in New York City, New York, as provided in the first sentence of this Section. In addition to such office or offices or agency or agencies, the Company may from time to
time designate and maintain one or more additional offices or agencies within or outside of New York, where Warrant Certificates may be presented for exercise or for registration of transfer or for exchange, and the Company may from time to time
change or rescind such designation, as it may deem desirable or expedient. The Company will give to the Warrant Agent written notice of the location of any such office or agency and of any change of location thereof. The Company hereby designates
the Warrant Agent’s office at 59 Maiden Lane in the Borough of Manhattan, City of New York (the “Warrant Agent Office”), as the initial agency maintained for each such purpose. 
  
 ARTICLE II 
 DURATION, EXERCISE OF WARRANTS AND EXERCISE PRICE 
  
 Section 2.01 Duration of Warrants. Subject to the terms and conditions established herein, the Warrants shall expire at 5:00 p.m., New York City,
New York time, on November 4, 2007 (the “Expiration Date”). Each Warrant may be exercised on any Business Day (as defined below) on or after the Exercisability Date (as defined below) and on or prior to the Expiration Date. 
  
 Any Warrant not exercised on or prior to the Expiration Date relating to such
Warrant shall become void, and all rights of the holder under the Warrant Certificate evidencing such Warrant and under this Agreement shall cease. 
  
 “Business Day” shall mean any day on which (i) banks in New York City, New York are open for business, (ii) the principal national securities
exchange or market on which the Common Stock is listed or admitted to trading is open for business and (iii) the principal national securities exchange or market, if any, on which the Warrants are listed or admitted to trading are open for business.

  

 7 

 Section 2.02 Exercise, Exercise Price, Settlement and Delivery. 
  
 (a) Subject to the provisions of this Agreement, a holder of each Warrant
shall have the right to purchase from the Company on or after the Effective Date (the “Exercisability Date”) and on or prior to the Expiration Date one fully paid, registered and non-assessable Share, at the purchase price of $5.00 for
each share purchased upon the exercise of the Warrants (the “Exercise Price”), in each case subject to adjustment in accordance with Article V hereof,. 
  
 (b) Warrants may be exercised on or after the Exercisability Date by (i) surrendering at any office or agency maintained for
that purpose by the Company pursuant to Section 1.10 (each a “Warrant Exercise Office”) the Warrant Certificate evidencing such Warrants with the form of election to purchase Shares set forth on the reverse side of the Warrant Certificate
(the “Election to Exercise”) duly completed and signed by the registered holder or holders thereof or by the duly appointed legal representative thereof or by a duly authorized attorney, and (ii) paying in full the Exercise Price for each
such Warrant exercised and any other amounts required to be paid pursuant to Section 1.08(i) hereof. Each Warrant may be exercised only in whole. 
  
 (c) Simultaneously with the exercise of each Warrant, payment in full of the Exercise Price shall be made in cash or by certified or official bank check
to be delivered to the office or agency where the Warrant Certificate is being surrendered. No payment or adjustment shall be made on account of any dividends on the Shares issued upon exercise of a Warrant. 
  
 (d) Upon such surrender of a Warrant Certificate and payment and collection
of the Exercise Price at any Warrant Exercise Office (other than any Warrant Exercise Office that also is an office of the Warrant Agent), such Warrant Certificate and payment shall be promptly delivered to the Warrant Agent. The “Exercise
Date” for a Warrant shall be the date when all of the items referred to in the first sentence of paragraphs (b) and (c) of this Section 2.02 are received by the Warrant Agent at or prior to 2:00 p.m., New York City, New York time, on a Business
Day and the exercise of the Warrants will be effective as of such Exercise Date. If any items referred to in the first sentence of paragraphs (b) and (c) are received after 2:00 p.m., New York City, New York time, on a Business Day, the exercise of
the Warrants to which such item relates will be effective on the next succeeding Business Day. Notwithstanding the foregoing, in the case of an exercise of Warrants on the Expiration Date (as defined in Section 2.01), if all of the items referred to
in the first sentence of paragraphs (b) and (c) are received by the Warrant Agent at or prior to 5:00 p.m., New York City, New York time, on such Expiration Date, the exercise of the Warrants to which such items relate will be effective on the
Expiration Date. If all of the items referred to in the first sentence of paragraphs (b) and (c) are received by the Warrant Agent after 5:00 p.m., New York City time, on such Expiration Date, the exercise of the Warrants to which such items relate
will not be effective and shall be void. 
  
 (e) Upon the exercise
of a Warrant in accordance with the terms hereof, the receipt of a Warrant Certificate and payment of the Exercise Price, the Warrant Agent shall: (i) cause an amount equal to the Exercise Price to be paid to the Company by crediting the same to

  

 8 

 the account designated by the Company in writing to the Warrant Agent for that purpose; (ii) advise the Company
immediately by telephone of the amount so deposited to the Company’s account and promptly confirm such telephonic advice in writing and (iii) as soon as practicable, advise the Company in writing of the number of Warrants (giving effect to
Section 5.01(i) below) exercised in accordance with the terms and conditions of this Agreement and the Warrant Certificates, the instructions of each exercising holder of the Warrant Certificates with respect to delivery of the Shares to which such
holder is entitled upon such exercise, and such other information as the Company shall reasonably request. 
  
 (f) Subject to Section 5.02 hereof, as soon as practicable after the exercise of any Warrant or Warrants in accordance with the terms hereof, the Company
shall issue or cause to be issued to or upon the written order of the registered holder of the Warrant Certificate evidencing such exercised Warrant or Warrants, a certificate or certificates evidencing the Shares to which such holder is entitled,
in fully registered form, registered in such name or names as may be directed by such holder pursuant to the Election to Exercise, as set forth on the reverse of the Warrant Certificate. The Warrant Agent shall have no obligation to ascertain the
number of Shares to be issued with respect to the exercised Warrant or Warrants. Such certificate or certificates evidencing the Shares shall be deemed to have been issued and any persons who are designated to be named therein shall be deemed to
have become the holder of record of such Shares as of the close of business on the Exercise Date. After such exercise of any Warrant or Warrants, the Company shall also issue or cause to be issued to or upon the written order of the registered
holder of such Warrant Certificate, a new Warrant Certificate, countersigned by the Warrant Agent pursuant to the Company’s written instruction, evidencing the number of Warrants, if any, remaining unexercised unless such Warrants shall have
expired. 
  
 Section 2.03 Cancellation of Warrant
Certificates. In the event the Company shall purchase or otherwise acquire Warrants, the Warrant Certificates evidencing such Warrants may thereupon be delivered to the Warrant Agent, and if so delivered, shall be canceled by it and retired. The
Warrant Agent shall cancel all Warrant Certificates properly surrendered for exchange, substitution, transfer or exercise. The Warrant Agent shall account promptly to the Company with respect to Warrants exercised and concurrently pay to the Company
all monies received by the Warrant Agent for the purchase of Warrant Shares through the exercise of such Warrants. 
  
 ARTICLE III 
 OTHER PROVISIONS RELATING TO 
 RIGHTS OF HOLDERS OF WARRANTS 
  
 Section 3.01 Enforcement of Rights. 
  
 (a) Notwithstanding any of the provisions of this Agreement, any holder of any Warrant Certificate, without the consent of the Warrant Agent, the holder
of any Shares or the holder of any other Warrant Certificate, may, in and for his own behalf, enforce, and may institute and maintain any suit, action or proceeding against the Company suitable to enforce, his right to exercise the Warrant or
Warrants evidenced by his Warrant Certificate in the manner provided in such Warrant Certificate and in this Agreement. 
  

 9 

 (b) Neither the Warrants nor any Warrant Certificate shall entitle the holders thereof to any of the
rights of a holder of Shares, including, without limitation, the right to vote or to receive any dividends or other payments or to consent or to receive notice as stockholders in respect of the meetings of stockholders or for the election of
directors of the Company or to share in the assets of the Company in the event of the liquidation, dissolution or winding up of the Company’s affairs or any other matter, or any rights whatsoever as stockholders of the Company. 
  
 ARTICLE IV 
 CERTAIN COVENANTS OF THE COMPANY 
  
 Section 4.01 Payment of Taxes. The Company will pay all documentary stamp taxes attributable to the initial issuance of Warrants and of the Shares upon the exercise of Warrants or to the separation of the
Warrants and Shares; provided, however, that the Company shall not be required to pay any tax or other governmental charge which may be payable in respect of any transfer or exchange of any Warrant Certificates or any certificates for Shares in a
name other than the registered holder of a Warrant Certificate surrendered upon the exercise of a Warrant. In any such case, no transfer or exchange shall be made unless or until the person or persons requesting issuance thereof shall have paid to
the Company the amount of such tax or other governmental charge or shall have established to the satisfaction of the Company that such tax or other governmental charge has been paid or an exemption is available therefrom. 
  
 Section 4.02 Issuance and Reservation of Shares. The Company shall
take all actions necessary to ensure that the shares of Common Stock issuable upon exercise of the Warrants shall be duly authorized and, when issued upon exercise or exchange of any Warrant in accordance with the terms hereof, shall be validly
issued, fully paid and non-assessable, free and clear of all taxes, liens, charges and security interests and free and clear of all preemptive or similar rights. There has been reserved and the Company shall at all times keep reserved so long as the
Warrants remain outstanding, out of its authorized Common Stock, such number of shares of Common Stock as shall be subject to purchase under the Warrants. On or before taking any action that would cause an adjustment pursuant to the terms of the
Warrants resulting in an increase in the number of shares of Common Stock deliverable upon such conversion or exercise above the number thereof previously authorized, reserved and available therefore, the Company shall take all such action so
required for compliance with this Section. 
  
 Section 4.03
Registration of Securities. The Company agrees, for so long as any Warrants continue to be outstanding, to use its best efforts to (i) maintain the effectiveness of the Company’s Registration Statement on Form S-3 (Registration No.
333-62290) (the “Shelf Registration Statement”) and file any and all post effective amendments to the Shelf Registration Statement, (ii) make all required filings under applicable securities laws and regulations necessary to keep current
the Shelf Registration Statement, (iii) reserve capacity under the Shelf Registration Statement of a sufficient number of shares of Common Stock to accommodate the exercise of all outstanding Warrants, (iv) make all filings required under applicable
federal and state securities laws, as may be necessary to permit the issuance of registered shares of Common Stock upon the exercise of the Warrants at any and all times during the period the Warrants are exercisable and (v) take all actions
required to cause the exchange of Warrants for shares of Common Stock as provided below in this Section 4.03 to be exempt from the registration 
  

 10 

 requirements of the Securities Act of 1933, as amended, and state qualification requirements; provided, however,
that the Company shall not be obligated to file any general consent to service of process or to qualify as a foreign corporation or as a dealer in securities in any jurisdiction in which it is not so qualified or to subject itself to taxation in
respect of doing business in any jurisdiction in which it is not otherwise so subject. If at any time the effectiveness of the Shelf Registration Statement lapses or the Shelf Registration Statement is otherwise not available for the issuance of
shares of Common Stock upon the exercise of the Warrants, the Company shall use its best efforts to prepare and file with the Securities and Exchange Commission (the “SEC”), a registration statement and such other documents as may be
necessary and use its commercially reasonable efforts to have such registration statement declared effective as promptly thereafter as practical, in order to comply with the provisions of the Act so as to permit the registered resale of the shares
of Common Stock issuable upon exercise of the Warrants. In the event that at the time a notice of exercise is delivered to the Warrant Agent either (i) a registration statement covering issuance or resale of the shares of Common Stock issuable upon
exercise of the Warrants is not in effect or (ii) the Shelf Registration Statement is not available or qualifications under applicable state securities laws are not in effect for the issuance of shares of Common Stock upon the exercise of the
Warrants and such purchase and the resale of Warrant Shares by the Warrantholders are not exempt from the registration requirements of the Securities Act of 1933, as amended, and such state qualification requirements, then, the Company shall, if
requested by the Warrantholder giving the notice of exercise, exchange the Warrants being exercised for a number of shares of Common Stock equal to the whole number nearest to (a) the number of shares of Common Stock issuable upon exercises of such
Warrants minus (b) the number of shares of Common Stock equal to the quotient obtained by dividing (i) the product obtained by multiplying (A) the Exercise Price by (B) the number of shares of Common Stock issuable upon exercises of such Warrants by
(ii) the Current Market Value. In the event that the Shelf Registration Statement or another registration statement is not effective and available or qualifications under applicable state securities laws are not in effect for the issuance of shares
of Common Stock upon the exercise of the Warrants, a holder of a Warrant would not be permitted under applicable securities laws to purchase shares of Common Stock upon exercise of the Warrants unless such purchase or exchange is exempt from the
registration requirements of the Securities Act of 1933, as amended, and such state qualification requirements, provided that the holders would be allowed to exchange Warrants for shares of Common Stock as provided in Section 4.03. 
  
 ARTICLE V 
 ADJUSTMENTS 
  
 Section 5.01 Adjustment of Exercise Price and Number of Shares Issuable. The number and kind of Shares purchasable upon the exercise of Warrants and the Exercise Price shall be subject to adjustment from time to time upon the
happening of certain events, as follows: 
  
 (a) Stock Splits,
Combinations, etc. In case the Company after the date hereof shall (A) make or pay a dividend or make a distribution in shares of Common Stock on its Common Stock, (B) subdivide its outstanding shares of Common Stock into a greater number of
shares or (C) combine or reclassify its outstanding shares of Common Stock into a smaller number of shares, the number of Shares purchasable upon exercise of the Warrants immediately prior to such action shall be adjusted so that the holder of any
Warrant upon exercise of the 
  

 11 

 
Warrants shall be entitled to receive the number of shares of Common Stock which such holder would have owned or would have been entitled to receive
immediately following such action had the Warrants been exercised immediately prior thereto. An adjustment made pursuant to this paragraph shall become effective on the day immediately after the record date, except as provided in Section 5.03 below,
in the case of a dividend or distribution and shall become effective on the day immediately after the effective date in the case of a subdivision or combination or reclassification. Whenever the number of Shares purchasable upon the exercise of a
Warrant is adjusted as provided in this paragraph (a), the Exercise Price shall be adjusted by multiplying such Exercise Price immediately prior to such adjustment by a fraction, of which the numerator shall be the number of Shares purchasable upon
the exercise of the Warrants immediately prior to such adjustment, and of which the denominator shall be the number of Shares so purchasable immediately thereafter. 
  
 (b) In case the Company or any subsidiary of the Company after the date hereof shall distribute to all holders of Common
Stock any of its assets, evidences of indebtedness, cash or securities (excluding any distributions referred to in paragraph (a) and any dividend or distribution paid in cash out of earned surplus of the Company) then in each such case the Exercise
Price shall be adjusted so that the same shall equal the price determined by multiplying the Exercise Price in effect immediately prior to the record date of such distribution by a fraction of which the numerator shall be the then Current Market
Value per share of the Common Stock (determined as provided in paragraph (c) below) on the record date mentioned below less the then fair market value (as reasonably determined in good faith by the Board of Directors of the Company) of the portion
of the assets, evidences of indebtedness, cash or securities so distributed applicable to one share of Common Stock, and of which the denominator shall be such Current Market Value per share of the Common Stock. Such adjustment shall, except as
provided in Section 5.03, become effective on the day immediately after the record date for the determination of stockholders entitled to receive such distribution. 
  
 (c) For the purposes of this Warrant Agreement, the Current Market Value per share of Common Stock on any date shall be
deemed to be the average of the Market Value of the Common Stock for the 10 trading days before, and ending not later than, the earlier of the date in question and the date before the “‘ex’ date”, with respect to the issuance or
distribution requiring such computation. For purposes of this paragraph (c), the term “‘ex’ date,” when used with respect to any issuance or distribution, means the first date on which the Common Stock trades regular way on the
Nasdaq Stock Market (“Nasdaq”) (or, if not listed or admitted to trading thereon, then on the principal national securities exchange or automated quotation system on which the Common Stock is listed or admitted to trading and if not listed
or admitted to trading on any national securities exchange or automated quotation system, as determined in good faith by the Company’s Board of Directors) without the right to receive such issuance or distribution. “Market Value” on
any trading day shall mean (i) in the case of a security traded on the over-the-counter market and not on Nasdaq nor on any national securities exchange, the per share last sale price of the Common Stock on such trading day as reported by Nasdaq or
an equivalent generally accepted reporting service; (ii) in the case of a security traded on Nasdaq or on a national securities exchange, the per share last sale price of the Common Stock on such trading day on Nasdaq or on the principal stock
exchange on which it is listed, as the case may be or (iii) if neither clause (i) or (ii) above is applicable, then the fair value thereof as determined in good faith by the Company’s Board of Directors. For purposes of clause (i) above, if
trading 

  

 12 

 
in the Common Stock is not reported by Nasdaq, the bid price referred to in said clause shall be the lowest bid price as reported in the “pink
sheets” published by National Quotation Bureau, Incorporated. The last sale price referred to in clause (ii) above shall be the last reported sale price or, in case no such reported sale takes place on such day, the average of the reported
closing bid and asked prices, in either case on Nasdaq or on the national securities exchange on which the Common Stock is then listed. 
  
 (d) Reclassification, Combinations, Mergers, etc. In case of any reclassification or change of outstanding shares of Common Stock (other than as
set forth in Section 5.01(a) above and other than a change in par value, or from par value to no par value, or from no par value to par value, or in case of any consolidation or merger of the Company with or into another corporation (other than a
merger in which the Company is the continuing corporation and which does not result in any reclassification or change of the then outstanding shares of Common Stock (other than a change in par value, or from par value to no par value, or from no par
value to par value or as a result of a subdivision or combination)) or in case of any sale or conveyance to another corporation of all or substantially all of the assets of the Company (computed on a consolidated basis), then, as a condition of such
reclassification, change, consolidation, merger, sale or conveyance, the Company or such a successor or purchasing corporation, as the case may be, shall forthwith make lawful and adequate provision whereby the holder of such Warrant then
outstanding shall have the right thereafter to receive on exercise of such Warrant the kind and amount of shares of stock and other securities and property receivable upon such reclassification, change, consolidation, merger, sale or conveyance by a
holder of the number of shares of Common Stock issuable upon exercise of such Warrant immediately prior to such reclassification, change, consolidation, merger, sale or conveyance and enter into a supplemental warrant agreement so providing. Such
provisions shall include provision for adjustments which shall be as nearly equivalent as may be practicable to the adjustments provided for in this Article V. If the issuer of securities deliverable upon exercise of Warrants under the supplemental
warrant agreement is an affiliate of the surviving or transferee corporation, that issuer shall join in the supplemental warrant agreement. The above provisions of this paragraph (d) shall similarly apply to successive reclassifications and changes
of shares of Common Stock and to successive consolidations, mergers, sales or conveyances. 
  
 In case of any such reclassification, merger, consolidation or disposition of assets, the successor or acquiring corporation (if other than the Company) shall expressly assume the due and punctual observance and
performance of each and every covenant and condition of this Warrant Agreement to be performed and observed by the Company and all the obligations and liabilities hereunder, subject to such modifications as may be deemed appropriate (as determined
by resolution of the Board of Directors of the Company) in order to provide for adjustments of shares of the Common Stock for which this Warrant is exercisable which shall be as nearly equivalent as practicable to the adjustments provided for in
this Article V. The foregoing provisions of this Section 5.01(d) shall similarly apply to successive reorganizations, reclassifications, mergers, consolidations or disposition of assets. 
  
 If, as a result of an adjustment made pursuant to this paragraph, the holder of any Warrant thereafter exercised shall
become entitled to receive shares of two or more classes of capital stock of the Company, the Board of Directors of the Company (whose determination shall be conclusive) shall determine the allocation of the adjusted Exercise Price between or among
shares of such classes of capital stock. 
  

 13 

 (e) Issuance of Common Stock, Options or Convertible Securities. For the purposes of this Warrant
Agreement, “Additional Shares of Common Stock” shall mean all shares of Common Stock issued or deemed to be issued by the Company after the Effective Date, other than Excluded Shares (as defined below). 
  
 In the event the Company shall, at any time or from time to time after the
Effective Date, issue, sell, distribute or otherwise grant in any manner (including by assumption) shares of Common Stock or any rights to subscribe for or to purchase, or any warrants or options for the purchase of, Common Stock or any stock or
securities convertible into or exchangeable for Common Stock (any such rights, warrants or options being herein called “Options” and any such convertible or exchangeable stock or securities being herein called “Convertible
Securities”) or any Convertible Securities (other than upon exercise of any Option), whether or not such Options or the rights to convert or exchange such Convertible Securities are immediately exercisable, then the maximum number of shares of
Common Stock (as set forth in the instrument relating thereto without regard to any provision contained therein for a subsequent adjustment of such number) issuable upon the exercise and/or conversion of such Options or Convertible Securities, shall
be deemed to be Additional Shares of Common Stock. 
  
 For
purposes of this Warrant Agreement, the term “Issuance Date” shall mean (i) with respect to Additional Shares of Common Stock deemed to have been issued in connection with the issuance of an Option or Convertible Security, the date such
Option or Convertible Security is issued and (ii) in all other cases, the actual date Additional Shares of Common Stock are issued. 
  
 For the purposes of this Warrant Agreement, “Excluded Shares” shall mean: (i) shares for which the consideration per share as determined
pursuant to paragraph (f) below would be equal to or more than the Current Market Value determined on the day prior to the Issuance Date; (ii) shares for which the consideration per share as determined pursuant to (f) below is equal to or greater
than the initial Exercise Price; (iii) shares of Common Stock issuable upon the exercise of Options or conversion or payment of Convertible Securities existing as of the Effective Date; (iv) shares of Common Stock (appropriately adjusted to reflect
stock splits, stock dividends, reorganizations, consolidations and similar changes) issued pursuant to (A) any stock incentive plan existing as of the Effective Date or (B) any amendment thereto or any additional stock incentive plan adopted by the
stockholders of the Company after the Effective Date; and (v) shares issued pursuant to the adjustment provisions of this Section 5.01. The issuance of Excluded Shares shall not be an issuance of Additional Shares of Common Stock, and shall not give
rise to an adjustment or a right to purchase the securities pursuant to paragraph (f) below. 
  
 In any such case in which the Additional Shares of Common Stock are deemed to be issued, no right to receive an adjustment or to purchase securities under Section 5.01(f) below will accrue upon the subsequent issue of
shares of Common Stock upon the exercise and/or conversion or exchange of such Option or Convertible Security unless such Option or Convertible Security shall have been amended or modified prior to exercise or conversion or exchange so as to
increase the number of Additional Shares of Common Stock deemed to have been issued thereunder or decrease the exercise and/or conversion or exchange price payable thereunder to an amount less than Current Market Value as of the Issuance Date
thereof. 
  

 14 

 (f) If the price per share at which Common Stock is issued after the Effective Date or Common Stock is
issuable upon the exercise of Options or upon the conversion or exchange of Convertible Securities issued after the Effective Date, in either case other than Excluded Shares (determined by dividing (i) the aggregate amount, if any, received or
receivable by the Company as consideration for the issuance, sale, distribution or granting of such Common Stock or Options or any such Convertible Security, plus the minimum aggregate amount of additional consideration, if any, payable to the
Company upon the issuance of Common Stock or the exercise of all such Options or upon conversion or exchange of all such Convertible Securities, plus, in the case of Options to acquire Convertible Securities, the minimum aggregate amount of
additional consideration, if any, payable upon the conversion or exchange of all such Convertible Securities, by (ii) the total maximum number of shares of Common Stock to be issued or issuable upon the exercise of all such Options or upon the
conversion or exchange of all such Convertible Securities or upon the conversion or exchange of all Convertible Securities issuable upon the exercise of all Options (as set forth in the instrument relating thereto without regard to any provision
contained therein for a subsequent adjustment of such number)) shall be less than the Current Market Value per share of Common Stock (determined pursuant to Section 5.01(c)) on the Issuance Date of such Common Stock, Options or Convertible
Securities then, unless the Company offers to sell to each holder of Warrants, at the same price and on the same terms offered to all other prospective buyers (provided that the holders of Warrants shall not be required to buy any securities or
other assets in order to buy such Common Stock, Options or Convertible Securities, except in the context of an offering of units of packaged securities), a number of shares of Common Stock, Options or Convertible Securities that is equal to the
product of such holder’s portion of the Common Stock then outstanding if immediately prior thereto all the Warrants held by such holder had been exercised, multiplied by the number of shares of Common Stock, Options or Convertible Securities so
issued, sold, distributed or granted: 
  
 (i) The Exercise Price
shall be reduced to an amount equal to the product obtained by multiplying (A) the Exercise Price in effect immediately prior to such issuance or sale times (B) a fraction, (I) the numerator of which shall be the sum of (x) the product of (1) the
number of shares of Common Stock outstanding (on a Fully Diluted Basis) immediately prior to such issuance or sale times (2) the Current Market Value per share as of the date of such issuance or sale plus (y) the consideration, if any, received or
receivable by the Company upon such issuance, sale, exercise, conversion or exchange calculated in accordance with the procedures set forth above pursuant to this paragraph (f), and (II) the denominator of which shall be the product of (x) the
number of shares of Common Stock outstanding (on a Fully Diluted Basis) immediately after such issuance or sale times (y) such Current Market Value per share; and 
  
 (ii) The number of Shares issuable upon exercise of such Warrant shall be increased to the number of shares determined by
multiplying (A) the number of Shares issuable upon exercise of such Warrant immediately prior to such issuance or sale by (B) a fraction, (1) the numerator of which shall be the Exercise Price in effect immediately prior to the adjustment in clause
(i) of this paragraph (f), and (2) the denominator of which shall be the Exercise Price in effect immediately after such adjustment. 
  

 15 

 “Fully Diluted Basis” means, with respect to the Common Stock at any time of determination, the
number of shares of Common Stock that would be issued and outstanding at such time, assuming full conversion, exercise and exchange of all issued and outstanding Convertible Securities and Options that shall be (or may become) exchangeable for, or
exercisable or convertible into, Common Stock, including the Warrants. 
  
 Each holder of a Warrant may elect to buy all or any portion of the Common Stock, Options or Convertible Securities offered pursuant to this subsection (f) or may decline to purchase any such securities. 
  
 Notwithstanding the provisions of this subsection (f), in no event will the
Exercise Price be decreased pursuant to any adjustment under this subsection (f) to a price under $3.95. 
  
 (g) Consideration Received. If any shares of Common Stock, Options or Convertible Securities shall be issued, sold or distributed for a
consideration other than cash, the amount of the consideration other than cash received by the Company in respect thereof shall be deemed to be the then fair market value of such consideration (as determined in good faith by the Board of Directors
of the Company). If any Options shall be issued in connection with the issuance and sale of other securities of the Company, together comprising one integral transaction in which no specific consideration is allocated to such Options by the parties
thereto, such Options shall be deemed to have been issued without consideration; provided, however, that if such Options have an exercise price equal to or greater than the Current Market Value of the Common Stock on the date of issuance of such
Options, then such Options shall be deemed to have been issued for consideration equal to such exercise price. For purposes of determining the price per share of any Additional Shares of Common Stock, in the event that shares of Common Stock,
Options and Convertible Securities issued in a single transaction or series of related transactions, the price per share shall be determined on the basis of the aggregate consideration received and shares issued or deemed to be issued in such
transaction or series of related transactions. 
  
 (h) Changes
in Options and Convertible Securities. If the exercise price provided for in any Options referred to in Section 5.01(f) above, the additional consideration, if any, payable upon the conversion or exchange of any Convertible Securities referred
to in Section 5.01(f) above, or the rate at which any Convertible Securities referred to in Section 5.01(f) above are convertible into or exchangeable for Common Stock shall change at any time to a price which is less than the Current Market Value
thereof as of the Issuance Date, then the adjustment provisions of Section 5.01(f) above would be applicable. 
  
 (i) Statement of Warrants. Irrespective of any adjustment in the number or kind of Shares issuable upon the exercise of the Warrants, Warrants
theretofore or thereafter issued shall continue to express the same number and kind of shares as are stated in the Warrants initially issuable pursuant to this Agreement. 
  

 16 

 (j) Expiration of Rights, Warrants or Options. Upon the expiration of any Options or Convertible
Securities, to the extent the Warrants shall not have been exercised, the Exercise Price shall be adjusted to such amount as would have been received by a Warrant holder had the adjustment in such Exercise Price made upon the distribution of such
Options or Convertible Securities been made upon the basis of the distribution of only such number of Options or Convertible Securities as were actually exercised or converted. 
  
 (k) No Nominal Adjustment. No adjustment in the number of Shares purchasable pursuant to the Warrants or in the
Exercise Price shall be required unless such adjustment would require an increase or decrease of at least 1.0% of the number of Shares then purchasable upon exercise of the Warrants or in the Exercise Price; provided, however, that any adjustments
which by reason of this subsection (k) are not required to be made immediately shall be carried forward and taken into account in any subsequent adjustment. All calculations under this Section 5 shall be made to the nearest cent or to the nearest
one-hundredth of a share, as the case may be. 
  
 Section 5.02
Fractional Interest. The Company shall not be required to issue fractional shares of Common Stock on the exercise of Warrants. If more than one Warrant shall be presented for exercise in full at the same time by the same holder, the number of
full shares of Common Stock which shall be issuable upon such exercise shall be computed on the basis of the aggregate number of shares of Common Stock acquirable on exercise of the Warrants so presented. If any fraction of a share of Common Stock
would, except for the provisions of this Section, be issuable on the exercise of any Warrant (or specified portion thereof), the Company shall direct the transfer agent for the Common Stock to pay an amount in cash calculated to equal the then
Current Market Value per share (determined pursuant to Section 5.01(c)) multiplied by such fraction computed to the nearest whole cent. Holders of Warrants, by their acceptances of the Warrant Certificates, expressly waive any and all rights to
receive any fraction of a share of Common Stock or a stock certificate representing a fraction of a share of Common Stock. 
  
 Section 5.03 When Adjustment Not Required. If the Company shall take a record of the holders of its Common Stock for the purpose of entitling them
to receive a dividend or distribution or subscription or purchase rights and shall, thereafter and before the distribution to stockholders thereof, legally abandon its plan to pay or deliver such dividend, distribution, subscription or purchase
rights, then thereafter no adjustment shall be required by reason of the taking of such record and any such adjustment previously made in respect thereof shall be rescinded and annulled. 
  
 Section 5.04 Challenge to Good Faith Determination. Whenever the Board of Directors of the Company shall be required
to make a determination in good faith of the fair value of any item under this Article V, such determination may be challenged in good faith by holders holding a majority of the outstanding Warrants (the “Majority Holders”), and any
dispute shall be resolved by an investment banking firm of national standing selected by the Company. The fee of such investment banking firm shall be paid by the Company, unless such fair market value as determined by the investment banking firm is
more than 95% of the fair market value determined by the Board of Directors of the Company, in which case the challenging holders shall be jointly and severally liable for such fee. 
  

 17 

 Section 5.05 Treasury Stock. The sale or other disposition of any issued shares of Common Stock
owned or held by or for the account of the Company shall be deemed an issuance thereof and a repurchase thereof and designation of such shares as treasury stock shall be deemed to be a redemption thereof for the purposes of this Agreement.

  
 Section 5.06 Notices to Warrant Holders. In connection
with any adjustment pursuant to this Article V, the Company shall (i) promptly after such adjustment, cause to be filed with the Warrant Agent a certificate of an officer of the Company setting forth the number of shares (or portion thereof)
issuable after such adjustment, upon exercise of a Warrant and the Exercise Price after such adjustment, which certificate shall be conclusive evidence of the correctness of the matters set forth therein, and (ii) promptly after such adjustment
cause to be given to each of the registered holders of the Warrant Certificates at his address appearing on the Warrant Register written notice of such adjustments by first-class mail, postage prepaid. The Warrant Agent shall be entitled to
conclusively rely on the above-referenced officer’s certificate and shall be under no duty or responsibility with respect to any such certificate, except to exhibit the same from time to time to any holder desiring an inspection thereof during
normal business hours upon reasonable notice. The Warrant Agent shall not at any time be under any duty or responsibility to any holder to determine whether any facts exist that may require any adjustment of the number of Shares issuable on exercise
of the Warrants or the Exercise Price, or with respect to the nature or extent of any such adjustment when made, or with respect to the method employed in making such adjustment or the validity or value (or the kind or amount) of any Shares which
may be issuable on exercise of the Warrants. The Warrant Agent shall not be responsible for any failure of the Company to make any cash payment or to issue, transfer or deliver any shares of Common Stock or stock certificates or other common stock
or property upon the exercise of any Warrant. 
  
 The Company
shall, in addition, promptly notify the holders of the Warrants of any determination of its Board of Directors that any actions affecting its Common Stock will not require an adjustment to the number of Shares for which a Warrant is exercisable, and
shall specify in such notice the reasons for such determination. In the event that the Majority holders shall challenge any of the calculations set forth in such notice within 20 days after the Company’s delivery thereof, the Company shall
retain a firm of independent certified public accountants or law firm of national standing selected by the Company to prepare and execute a certificate verifying that no adjustment is required. The Company shall promptly cause a signed copy of any
certificate prepared pursuant to this Section 5.06 to be delivered to each holder at his address appearing in the Warrant Register. The Company shall keep at its office or agency designated pursuant to Section 1.10 copies of all such certificates
and cause the same to be available for inspection at said office during normal business hours upon reasonable notice by any holder or any prospective purchaser of a Warrant designated by a holder thereof. 
  
 Section 5.07 Par Value of Shares of Common Stock. Before taking any
action which would cause an adjustment effectively reducing the portion of the Exercise Price allocable to each Share below the then par value per share of the Common Stock issuable upon exercise of the Warrants, the Company will take any corporate
action which may, in the opinion of its counsel, be necessary in order that the Company may validly and legally issue fully paid and nonassessable Common Stock upon exercise of the Warrants. 
  

 18 

 ARTICLE VI 
 CONCERNING THE WARRANT AGENT 
  
 Section 6.01 Warrant Agent. The Company hereby appoints American Stock Transfer and Trust Company as warrant agent (and in all capacities in this Agreement, the “Warrant Agent”) of the Company in respect of the Warrants and
the Warrant Certificates upon the terms and subject to the conditions herein and in the Warrant Certificates set forth; and American Stock Transfer and Trust Company hereby accepts such appointment. The Warrant Agent shall have the powers and
authority specifically granted to and conferred upon it in the Warrant Certificates and hereby and such further powers and authority to act on behalf of the Company as the Company may hereafter grant to or confer upon it and it shall accept in
writing. All of the terms and provisions with respect to such powers and authority contained in the Warrant Certificates are subject to and governed by the terms and provisions hereof. 
  
 Section 6.02 Conditions of Warrant Agent’s Obligations. The Warrant Agent accepts its obligations herein set
forth upon the terms and conditions hereof and in the Warrant Certificates, including the following, to all of which the Company agrees and to all of which the rights hereunder of the holders from time to time of the Warrant Certificates shall be
subject: 
  
 (a) The Warrant Agent shall be entitled to
compensation to be agreed upon with the Company in writing for all services rendered by it and the Company agrees promptly to pay such compensation and to reimburse the Warrant Agent for its reasonable out-of-pocket expenses (including reasonable
fees and expenses of counsel) incurred without gross negligence or willful misconduct on its part in connection with the services rendered by it hereunder. The Company also agrees to indemnify the Warrant Agent, each successor Warrant Agent, and
their respective directors, officers, affiliates, agents and employees for, and to hold it and its directors, officers, affiliates, agents and employees harmless against, any loss, liability or expense of any nature whatsoever (including, without
limitation, fees and expenses of counsel) incurred without gross negligence or willful misconduct on the part of the Warrant Agent or successor Warrant Agent, arising out of or in connection with its acting as such Warrant Agent hereunder and its
exercise or failure to exercise of its rights and performance of its obligations hereunder. The obligations of the Company under this Section 6.02 shall survive the exercise and the expiration of the Warrant Certificates and the resignation and
removal of the Warrant Agent. 
  
 (b) In acting under this
Agreement and in connection with the Warrant Certificates, the Warrant Agent is acting solely as agent of the Company and does not assume any obligation or relationship of agency or trust for or with any of the owners or holders of the Warrant
Certificates. 
  
 (c) The Warrant Agent may consult with counsel
and any advice or written opinion of such counsel shall be full and complete authorization and protection in respect of any action taken, suffered or omitted by it hereunder in good faith and in accordance with such advice or opinion. 
  
 (d) The Warrant Agent shall be fully protected and shall incur no liability
for or in respect of any action taken or omitted to be taken or thing suffered by it in reliance upon any Warrant Certificate, notice, direction, consent, certificate, affidavit, opinion of counsel, instruction, statement or other paper or document
reasonably believed by it, in the absence of bad faith, to be genuine and to have been presented or signed by the proper parties. 
  

 19 

 (e) The Warrant Agent, and its officers, directors, affiliates and employees (“Related
Parties”), may become the owners of, or acquire any interest in, Warrant Certificates, shares or other obligations of the Company with the same rights that it or they would have it if were not the Warrant Agent hereunder and, to the extent
permitted by applicable law, it or they may engage or be interested in any financial or other transaction with the Company and may act on, or as depositary, trustee or agent for, any committee or body of holders of shares or other obligations of the
Company as freely as if it were not the Warrant Agent hereunder. Nothing in this Agreement shall be deemed to prevent the Warrant Agent or such Related Parties from acting in any other capacity for the Company. 
  
 (f) The Warrant Agent shall not be under any liability for interest on, and
shall not be required to invest, any monies at any time received by it pursuant to any of the provisions of this Agreement or of the Warrant Certificates. 
  
 (g) The Warrant Agent shall not be under any responsibility in respect of the validity of this Agreement (or any term or provision hereof) or the
execution and delivery hereof (except the due execution and delivery hereof by the Warrant Agent) or in respect of the validity or execution of any Warrant Certificate (except its authentication thereof). 
  
 (h) The recitals and other statements contained herein and in the Warrant
Certificates (except as to the Warrant Agent’s authentication thereon) shall be taken as the statements of the Company and the Warrant Agent assumes no responsibility for the correctness of the same. The Warrant Agent does not make any
representation as to the validity or sufficiency of this Agreement or the Warrant Certificates, except for its due execution and delivery of this Agreement; provided, however, that the Warrant Agent shall not be relieved of its duty to authenticate
the Warrant Certificates as authorized by this Agreement. The Warrant Agent shall not be accountable for the use or application by the Company of the proceeds of the exercise of any Warrant. 
  
 (i) Before the Warrant Agent acts or refrains from acting with respect to any
matter contemplated by this Warrant Agreement, it may require: 
  
 (1) an Officers’ Certificate stating that, in the opinion of the signers, all conditions precedent, if any, provided for in this Warrant Agreement relating to the proposed action have been complied with; and

  
 (2) if reasonably necessary in the sole
judgment of the Warrant Agent, an opinion of counsel for the Company stating that, in the opinion of such counsel, all such conditions precedent have been complied with. 
  
 Each Officers’ Certificate or, if requested, an opinion of counsel with respect to compliance with a condition or
covenant provided for in this Warrant Agreement shall include: 
  
 (1) a statement that the person making such certificate or opinion has read such covenant or condition; 
  

 20 

 (2) a brief statement as to the nature and scope of the examination or investigation upon
which the statements or opinions contained in such certificate or opinion are based; 
  
 (3) a statement that, in the opinion of such person, he or she has made such examination or investigation as is necessary to enable him or
her to express an informed opinion as to whether or not such covenant or condition has been complied with; and 
  
 (4) a statement as to whether or not, in the opinion of such person, such condition or covenant has been complied with. 
  
 (j) The Warrant Agent shall be obligated to perform such duties as are herein
and in the Warrant Certificates specifically set forth and no implied duties or obligations shall be read into this Agreement or the Warrant Certificates against the Warrant Agent. The Warrant Agent shall not be accountable or under any duty or
responsibility for the use by the Company of any of the Warrant Certificates authenticated by the Warrant Agent and delivered by it to the Company pursuant to this Agreement. The Warrant Agent shall have no duty or responsibility in case of any
default by the Company in the performance of its covenants or agreements contained in the Warrant Certificates or in the case of the receipt of any written demand from a holder of a Warrant Certificate with respect to such default, including,
without limiting the generality of the foregoing, any duty or responsibility to initiate or attempt to initiate any proceedings at law or otherwise or, except as provided in Section 7.02 hereof, to make any demand upon the Company. The Warrant Agent
shall not be obligated to perform any duty to the extent prohibited by law. 
  
 (k) Unless otherwise specifically provided herein, any order, certificate, notice, request, direction or other communication from the Company made or given under any provision of this Agreement shall be sufficient if
signed by its chief executive officer, its president, its treasurer, its controller or any vice president or its secretary or any assistant secretary. 
  
 (l) The Warrant Agent shall have no responsibility in respect of any adjustment pursuant to Article V hereof. 
  
 (m) The Company agrees that it will perform, execute, acknowledge and
deliver, or cause to be performed, executed, acknowledged and delivered, all such further and other acts, instruments and assurances as may reasonably be required by the Warrant Agent for the carrying out or performing by the Warrant Agent of the
provisions of this Agreement. 
  
 (n) The Warrant Agent is hereby
authorized and directed to accept written instructions with respect to the performance of its duties hereunder from any one of the chief executive officer, the president, the treasurer, the controller, any vice president or the secretary of the
Company or any other officer or official of the Company reasonably believed to be authorized to give such instructions and to apply to such officers or officials for advice or instructions in connection with its duties, and it shall not be liable
for any action taken or suffered to be taken by it in good faith in accordance with instructions with respect to any matter arising in connection with the Warrant Agent’s duties and obligations arising under this 
  

 21 

 Agreement. Such application by the Warrant Agent for written instructions from the Company may, at the option of the
Warrant Agent, set forth in writing any action proposed to be taken or omitted by the Warrant Agent with respect to its duties or obligations under this Agreement and the date on or after which such action shall be taken and the Warrant Agent shall
not be liable for any action taken or omitted in accordance with a proposal included in any such application on or after the date specified therein (which date shall be not less than 10 Business Days after the Company receives such application
unless the Company consents to a shorter period), provided that (i) such application includes a statement to the effect that it is being made pursuant to this paragraph (n) and that unless objected to prior to such date specified in the application,
the Warrant Agent will not be liable for any such action or omission to the extent set forth in such application and (ii) prior to taking or omitting any such action, the Warrant Agent has not received written instructions objecting to such proposed
action or omission. 
  
 (o) Whenever in the performance of its
duties under this Agreement the Warrant Agent shall deem it necessary or desirable that any fact or matter be proved or established by the Company prior to taking or suffering any action hereunder, such fact or matter (unless other evidence in
respect thereof be herein specifically prescribed) may be deemed to be conclusively proved and established by a certificate signed by any one of the chief executive officer, the president, the treasurer, the controller, any vice president or the
secretary of the Company or any other officer or official of the Company reasonably believed to be authorized to give such instructions and delivered to the Warrant Agent; and such certificate shall be full authorization to the Warrant Agent for any
action taken or suffered in good faith by it under the provisions of this Agreement in reliance upon such certificate. 
  
 (p) The Warrant Agent shall not be required to risk or expend its own funds in the performance of its obligations and duties hereunder. 
  
 Section 6.03 Resignation and Appointment of Successor. 
  
 (a) The Company agrees, for the benefit of the holders from time to time of
the Warrant Certificates, that there shall at all times be a Warrant Agent hereunder. 
  
 (b) The Warrant Agent may at any time resign as Warrant Agent by giving written notice to the Company of such intention on its part, specifying the date on which its desired resignation shall become effective,
provided that such date shall be at least 30 days after the date on which such notice is given unless the Company agrees to accept less notice. Upon receiving such notice of resignation, the Company shall promptly appoint a successor Warrant Agent,
qualified as provided in Section 6.03(d) hereof, by written instrument in duplicate signed on behalf of the Company, one copy of which shall be delivered to the resigning Warrant Agent and one copy to the successor Warrant Agent. As provided in
Section 6.03(d) hereof, such resignation shall become effective upon the earlier of (x) the acceptance of the appointment by the successor Warrant Agent or (y) 30 days after receipt by the Company of notice of such resignation. The Company may, at
any time and for any reason, and shall, upon any event set forth in the next succeeding sentence, remove the Warrant Agent and appoint a successor Warrant Agent by written instrument in duplicate, specifying such removal and the date on which it is
intended to become effective, signed on behalf of the Company, one copy of which shall be delivered to the Warrant Agent being removed and one copy to the successor Warrant 
  

 22 

 Agent. The Warrant Agent shall be removed as aforesaid if it shall become incapable of acting, or shall be adjudged as
bankrupt or insolvent, or a receiver of the Warrant Agent or of its property shall be appointed, or any public officer shall take charge or control of it or of its property or affairs for the purpose of rehabilitation, conservation or liquidation.
Any removal of the Warrant Agent and any appointment of a successor Warrant Agent shall become effective upon acceptance of appointment by the successor Warrant Agent as provided in Section 6.03(d). As soon as practicable after appointment of the
successor Warrant Agent, the Company shall cause written notice of the change in the Warrant Agent to be given to each of the registered holders of the Warrants in the manner provided for in Section 7.04 hereof 
  
 (c) Upon resignation or removal of the Warrant Agent, if the Company shall
fail to appoint a successor Warrant Agent within a period of 30 days after receipt of such notice of resignation or removal, then the holder of any Warrant Certificate or the Warrant Agent may apply to a court of competent jurisdiction for the
appointment of a successor to the Warrant Agent. Pending appointment of a successor to the Warrant Agent, either by the Company or by such a court, the duties of the Warrant Agent shall be carried out by the Company. 
  
 (d) Any successor Warrant Agent, whether appointed by the Company or by a
court, shall be a bank or trust company in good standing, incorporated under the laws of the United States of America or any State thereof and having, at the time of its appointment, a combined capital surplus of at least $50 million. Such successor
Warrant Agent shall execute and deliver to its predecessor and to the Company an instrument accepting such appointment hereunder and all the provisions of this Agreement, and thereupon such successor Warrant Agent, without any further act, deed or
conveyance, shall become vested with all the rights, powers, duties and obligations of its predecessor hereunder, with like effect as if originally named as Warrant Agent hereunder, and such predecessor shall thereupon become obligated to (i)
transfer and deliver, and such successor Warrant Agent shall be entitled to receive, all securities, records or other property on deposit with or held by such predecessor as Warrant Agent hereunder and (ii) upon payment of the amounts then due it
pursuant to Section 6.02(a) hereof, pay over, and such successor Warrant Agent shall be entitled to receive, all monies deposited with or held by any predecessor Warrant Agent hereunder. 
  
 (e) Any corporation or bank into which the Warrant Agent hereunder may be merged or converted, or any corporation or bank
with which the Warrant Agent may be consolidated, or any corporation or bank resulting from any merger, conversion or consolidation to which the Warrant Agent shall be a party, or any corporation or bank to which the Warrant Agent shall sell or
otherwise transfer all or substantially all of its corporate trust business, shall be the successor to the Warrant Agent under this Agreement (provided that such corporation or bank shall be qualified as aforesaid) without the execution or filing of
any document or any further act on the part of any of the parties hereto. 
  
 (f) No Warrant Agent under this Warrant Agreement shall be personally liable for any action or omission of any successor Warrant Agent or of the Company. 
  

 23 

 ARTICLE VII 
 MISCELLANEOUS 
  
 Section
7.01 Amendment. This Agreement and the terms of the Warrants may be amended by the Company and the Warrant Agent, without the consent of the holder of any Warrant Certificate, for the purpose of curing any ambiguity, or of curing, correcting
or supplementing any defective or inconsistent provision contained herein or therein or, subject to the provisions of the second paragraph of this Section 7.01, in any other manner which the Company may deem necessary or desirable and which shall
not adversely affect in any material respect the interests of the holders of the Warrant Certificates. 
  
 The Company and the Warrant Agent may modify this Agreement and the terms of the Warrants with the consent of not less than a majority in number of the
then outstanding Warrants for the purpose of adding any provision to or changing in any manner or eliminating any of the provisions of this Agreement or modifying in any manner the rights of the holders of the outstanding Warrants; provided,
however, that no such modification that increases or decreases the Exercise Price, decreases the number of shares purchasable upon exercise of the Warrants, reduces the period of time during which the Warrants are exercisable hereunder, otherwise
materially and adversely affects the exercise rights of the holders of the Warrants, reduces the percentage required for modification, or effects any change to this Section 7.01 may be made with respect to an outstanding Warrant without the consent
of the holder of such Warrant. 
  
 Any modification or amendment
made in accordance with this Agreement will be conclusive and binding on all present and future holders of Warrant Certificates whether or not they have consented to such modification or amendment or waiver and whether or not notation of such
modification or amendment is made upon such Warrant Certificates. Any instrument given by or on behalf of any holder of a Warrant Certificate in connection with any consent to any modification or amendment will be conclusive and binding on all
subsequent holders of such Warrant Certificate. 
  
 Section 7.02
Notices and Demands to the Company and Warrant Agent. If the Warrant Agent shall receive any notice or demand addressed to the Company by the holder of a Warrant Certificate pursuant to the provisions hereof or of the Warrant Certificates,
the Warrant Agent shall promptly forward such notice or demand to the Company. 
  
 Section 7.03 Addresses for Notices to Parties and for Transmission of Documents. All notices hereunder to the parties hereto shall be deemed to have been given when sent by certified or registered mail, postage
prepaid, or by telex or telecopy, confirmed by first class mail, postage prepaid, addressed to any party hereto as follows: 
  

	To the Company:	  	Syntroleum Corporation
	 	  	4322 South 49th West Avenue
	 	  	Tulsa, Oklahoma 74107
	 	  	Attention:    Chief Executive Officer
		
	To the Warrant Agent:	  	American Stock Transfer and Trust Company
	 	  	59 Maiden Lane
	 	  	New York, New York 10038
	 	  	Attention:    Corporate Trust Department

  
 or at any other address of which
either of the foregoing shall have notified the other in writing. 
  

 24 

 Section 7.04 Notices to Holders . Notices to holders of Warrants shall be mailed to such holders
at the addresses of such holders as they appear in the Warrant Register. Any such notice shall be sufficiently given if sent by first-class mail, postage prepaid. 
  
 Section 7.05 APPLICABLE LAW. THE VALIDITY, INTERPRETATION AND PERFORMANCE OF THIS AGREEMENT AND EACH WARRANT
CERTIFICATE ISSUED HEREUNDER AND OF THE RESPECTIVE TERMS AND PROVISIONS THEREOF SHALL BE GOVERNED BY THE LAWS OF THE STATE OF NEW YORK, WITHOUT GIVING EFFECT TO THE CONFLICT OF LAWS PROVISIONS THEREOF. 
  
 Section 7.06 Obtaining of Governmental Approvals. The Company will
from time to time take all action required to be taken by it which may be necessary to obtain and keep effective any and all permits, consents and approvals of governmental agencies and authorities and securities acts filings under United States
Federal and State laws, and the rules and regulations of all stock exchanges on which the Warrants are listed which may be or become requisite in connection with the issuance, sale, transfer, and delivery of the Warrant Certificates, the exercise of
the Warrants or the issuance, sale, transfer and delivery of the shares issued upon exercise of the Warrants. 
  
 Section 7.07 Persons Having Rights Under Agreement. Nothing in this Agreement expressed or implied and nothing that may be inferred from any of the
provisions hereof is intended, or shall be construed, to confer upon, or give to, any person or corporation other than the Company, the Warrant Agent and the holders of the Warrant Certificates any right, remedy or claim under or by reason of this
Agreement or of any covenant, condition, stipulation, promise or agreement hereof; and all covenants, conditions, stipulations, promises and agreements in this Agreement contained shall be for the sole and exclusive benefit of the Company and the
Warrant Agent and their successors and of the holders of the Warrant Certificates. 
  
 Section 7.08 Headings. The descriptive headings of the several Articles and Sections of this Agreement are inserted for convenience only and shall not control or affect the meaning or construction of any of the
provisions hereof. 
  
 Section 7.09 Counterparts. This
Agreement may be executed in any number of counterparts, each of which so executed shall be deemed to be an original; but such counterparts shall together constitute but one and the same instrument. 
  
 Section 7.10 Inspection of Agreement. A copy of this Agreement shall
be available at all reasonable times at the principal corporate trust office of the Warrant Agent, for inspection by the holder of any Warrant Certificate. The Warrant Agent may require such holder to submit his Warrant Certificate for inspection by
it. 
  
 Section 7.11 Successors. All the covenants and
provisions of this Agreement by or for the benefit of the Company or the Warrant Agent shall bind and inure to the benefit of their respective successors and assigns hereunder. 
  

 25 

 IN WITNESS WHEREOF, this Agreement has been duly executed by the parties hereto as of the day and year
first above written. 
  

	SYNTROLEUM CORPORATION
		
	By:	 	 /s/ Richard Edmonson

	Name:	 	Richard Edmonson
	Title:	 	Vice President, General Counsel and Secretary
	
	AMERICAN STOCK TRANSFER AND TRUST COMPANY,
as Warrant Agent
		
	By:	 	 /s/ Herbert J. Lemmer

	Name:	 	Herbert J. Lemmer
	Title:	 	Vice President

  

 27 

 EXHIBIT A 
  
 [FORM OF WARRANT CERTIFICATE] 
  
 [FACE] 
  
 [Unless and until it is exchanged in whole or in part for Warrants in certificated form, this Warrant may not be transferred except as a whole by the
Depositary to a nominee of the Depositary or by a nominee of the Depositary to the Depositary or another nominee of the Depositary or by the Depositary or any such nominee to a successor Depositary or a nominee of such successor Depositary. Unless
this certificate is presented by an authorized representative of The Depository Trust Company, a New York corporation (“DTC”), to the issuer or its agent for registration of transfer, exchange or payment, and any certificate issued is
registered in the name of Cede & Co. or such other name as requested by an authorized representative of DTC (and any payment is made to Cede & Co. or such other entity as is requested by an authorized representative of DTC), ANY TRANSFER,
PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered owner hereof, Cede & Co., has an interest herein.1 
  
 CUSIP#[  ] 
  

	 No. [  ]
	 	[  ] Warrants

  
 WARRANT CERTIFICATE

  
 SYNTROLEUM CORPORATION 
  
 This Warrant Certificate certifies that
[            ], or registered assigns, is the registered holder of [  ] Warrants (the “Warrants”) to purchase shares of Common Stock, par value $.01 per share (the
“Common Stock”), of Syntroleum Corporation a Delaware corporation (the “Company”). Each Warrant entitles the holder to purchase from the Company at any time on or after
             until 5:00 p.m., New York City, New York time, on              (the “Expiration Date”),
             fully paid and non-assessable shares of Common Stock (a “Share”, or, if adjusted, the “Shares”, which may also include any other securities or
property purchasable upon exercise of a Warrant, such adjustment and inclusion each as provided in the Warrant Agreement) at the exercise price (the “Exercise Price”) of
             per Share upon surrender of this Warrant Certificate and payment of the Exercise Price at any office or agency maintained for that purpose by the Company (the
“Warrant Agent Office”), subject to the conditions set forth herein and in the Warrant Agreement. 
  
 The Exercise Price shall be payable by cash, certified check or official bank check or by such other means as is acceptable to the Company in the lawful
currency of the United States of America which as of the time of payment is legal tender for payment of public or private debts. The Company has initially designated at its agent’s office in New York City, New York, as the initial Warrant Agent
Office. The number of Shares issuable upon exercise of the Warrants (“Exercise Rate”) is subject to adjustment upon the occurrence of certain events set forth in the Warrant Agreement. 

 1
This paragraph is to be included only if the Warrant is in global form. 
  

 A-1 

 Any Warrants not exercised on or prior to 5:00 p.m., New York City, New York time, on
             shall thereafter be void. 
  
 Reference is hereby made to the further provisions on the reverse hereof which provisions shall for all purposes have the same effect as though fully set
forth at this place. Capitalized terms used in this Warrant Certificate but not defined herein shall have the meanings ascribed thereto in the Warrant Agreement. 
  
 This Warrant Certificate shall not be valid unless authenticated by the Warrant Agent, as such term is used in the Warrant
Agreement. 
  
 THIS WARRANT CERTIFICATE SHALL BE CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK WITHOUT GIVING EFFECT TO THE CONFLICT OF LAWS PROVISIONS THEREOF. 
  
 WITNESS the facsimile seal of the Company and facsimile signatures of its duly authorized officers. 
  

	Dated:                     	  	SYNTROLEM CORPORATION
	 	  	By:	  	  

	 	  	Name:	  	  

	 	  	Title:	  	  

  

	[Seal]
	
	Attest:
		
	By:	 	  

	Name:	 	  

	Title:	 	  

	Certificate of Authentication:

  

	This is one of the Warrants referred to in the within mentioned Warrant Agreement:
	 [

	 	 
	            as Warrant Agent	 	 

  

		
	By:	 	  

	 	 	 Authorized Signatory

  

 A-2 

 EXHIBIT A 
  
 [FORM OF WARRANT CERTIFICATE] 
  
 [REVERSE] 
  
 SYNTROLEUM CORPORATION 
  
 The Warrants evidenced by this Warrant Certificate are part of a duly authorized issue of Warrants, each of which represents the right to purchase at any time on or after
            , until 5:00 p.m., New York City, New York time, on             ,
         share of Common Stock of the Company, subject to adjustment as set forth in the Warrant Agreement. The Warrants are issued pursuant to a Warrant Agreement dated as of October
    , 2003 (the “Warrant Agreement”), duly executed and delivered by the Company to             , as Warrant Agent (the “Warrant
Agent”), which Warrant Agreement is hereby incorporated by reference in and made a part of this instrument and is hereby referred to for a description of the rights, limitation of rights, obligations, duties and immunities thereunder of the
Warrant Agent, the Company and the holders (the words “holders” or “holder” meaning the registered holders or registered holder) of the Warrants. Warrants may be exercised by (1) surrendering at any Warrant Agent Office this
Warrant Certificate with the form of Election to Exercise set forth hereon duly completed and executed and (ii) paying in full the Exercise Price for each such Warrant exercised and any other amounts required to be paid pursuant to the Warrant
Agreement. 
  
 If all of the items referred to in the last
sentence of the preceding paragraph are received by the Warrant Agent at or prior to 2:00 p.m., New York City, New York time, on a Business Day, the exercise of the Warrant to which such items relate will be effective on such Business Day. If any
items referred to in the last sentence of the preceding paragraph are received after 2:00 p.m., New York City, New York time, on a Business Day, the exercise of the Warrants to which such item relates will be deemed to be effective on the next
succeeding Business Day. Notwithstanding the foregoing, in the case of an exercise of Warrants on the Expiration Date, if all of the items referred to in the last sentence of the preceding paragraph are received by the Warrant Agent at or prior to
5:00 p.m., New York City, New York time, on such Expiration Date, the exercise of the Warrants to which such items relate will be effective on the Expiration Date. 
  
 Subject to the terms of the Warrant Agreement, as soon as practicable after the exercise of any Warrant or Warrants, the
Company shall issue or cause to be issued to or upon the written order of the registered holder of this Warrant Certificate pursuant to the Election to Exercise, as set forth on the reverse of this warrant Certificate, a certificate or certificates
evidencing the Share. Such certificate or certificates evidencing the Share or Shares shall be deemed to have been issued and any persons who are designated to be named therein shall be deemed to have become the holder of record of such Share or
Shares as of the close of business on the date upon which the exercise of this Warrant was deemed to be effective as provided in the preceding paragraph. 
  
 The Company will not be required to issue fractional shares of Common Stock upon exercise of the Warrants or distribute Share certificates that evidence
fractional shares of Common Stock. In lieu of fractional shares of Common Stock, there shall be paid to the registered holder of this Warrant Certificate at the time such Warrant Certificate is exercised an amount in cash equal to the same fraction
of the Current Market Value per share as determined in accordance with the Warrant Agreement. 
  

 A-3 

 EXHIBIT A 
  
 Warrant Certificates, when surrendered at any office or agency maintained by the Company for that purpose by the registered holder thereof in person or by
legal representative or attorney duly authorized in writing, may be exchanged for a new Warrant Certificate or new Warrant Certificates evidencing in the aggregate a like number of Warrants, in the manner and subject to the limitations provided in
the Warrant Agreement, without charge except for any tax or other governmental charge imposed in connection therewith. 
  
 Upon due presentment for registration of transfer of this Warrant Certificate at any office or agency maintained by the Company for that purpose, a new
Warrant Certificate evidencing in the aggregate a like number of Warrants shall be issued to the transferee in exchange for this Warrant Certificate, subject to the limitations provided in the Warrant Agreement, without charge except for any tax or
other governmental charge imposed in connection therewith. 
  
 The
Company and the Warrant Agent may deem and treat the registered holder hereof as the absolute owner of this Warrant Certificate (notwithstanding any notation of ownership or other writing hereon made by anyone) for the purpose of any exercise hereof
and for all other purposes, and neither the Company nor the Warrant Agent shall be affected by any notice to the contrary. 
  
 The term “Business Day” shall mean any day on which (i) banks in New York City, New York are open for business, (ii) the principal national
securities exchange or market on which the Common Stock is listed or admitted to trading is open for business and (iii) the principal national securities exchange or market on which the Warrants are listed or admitted to trading are open for
business. 
  

 A-4 

 EXHIBIT A 
  
 (FORM OF ELECTION TO EXERCISE) 
  
 (To be executed upon exercise of Warrants on the Exercise Date) 
  
 The undersigned hereby irrevocably elects to exercise              of the Warrants
represented by this Warrant Certificate and purchase the whole number of Shares issuable upon the exercise of such Warrants and herewith tenders payment for such Shares in the amount of
$             in cash or by certified or official bank check, in accordance with the terms hereof The undersigned requests that a certificate representing such Shares be registered
in the name of              whose address is              and that such certificate be delivered to
             whose address is             . Any cash payments to be paid in lieu of a fractional Share should be
made to              whose address is              and the check representing payment thereof should be delivered
to              whose address is             . 
  

	 Dated:

	 	 
	Name of holder of Warrant Certificate:	 	  

	 	 	(Please Print)
		
	Tax Identification or Social Security Number:	 	  

		
	Address:	 	  

	 	 	  

	 	 	  

	 	 	  

		
	Signature:	 	  

  
 Note: The above signature must
correspond with the name as written upon the face of this Warrant Certificate in every particular, without alteration or enlargement or any change whatever. 
  

	 Dated:

	 	 

  
  

 A-1 

 EXHIBIT A 
  
 [FORM OF ASSIGNMENT] 
  
 For value received              hereby sells, assigns and transfers unto
             the within Warrant Certificate, together with all right, title and interest therein, and does hereby irrevocably constitute and appoint attorney, to transfer said
Warrant Certificate on the books of the within-named Company, with full power of substitution in the premises. 
  

	Dated:	 	  

	Signature:	 	  

  
 Note: The above signature must
correspond with the name as written upon the face of this Warrant Certificate in every particular, without alteration or enlargement or any change whatever. 
  

 A-1 

 EXHIBIT A 
  
 SCHEDULE OF EXCHANGES OF CERTIFICATED WARRANTS2 
  
 The following exchanges of a part of this Global
Warrant for certificated Warrants have been made: 
  

	 Date of
 Exchange
	 	Amount of decrease in
Number of Warrants of
this Global Warrant	 	Amount of increase
in Number of
Warrants of this
Global Warrant	  	Number of Warrants
of this Global
Warrant following
such decrease (or
increase)	  	 Signature of

 authorized officer of
Warrant Agent

 2 This is to be included only if the Warrant is in global form. 
  

 A-1 

 EXHIBIT B 
  
 CERTIFICATE TO BE DELIVERED UPON EXCHANGE 
 OR
REGISTRATION OF TRANSFER OF WARRANTS 
  

	Re:	Warrants to Purchase Common Stock (the “Warrants”) of Syntroleum Corporation. 

  
 This Certificate relates to              Warrants held in* book-entry or*
             certificated form by              (the “Transferor”). 
  
 The Transferor: * 
  

	 	 ̈	has requested the Warrant Agent by written order to deliver in exchange for its beneficial interest in the Global Warrant held by the Depositary a Warrant or Warrants in definitive,
registered form of authorized denominations and an aggregate number equal to its beneficial interest in such Global Warrant (or the portion thereof indicated above); or 

  

	 	 ̈	has requested the Warrant Agent by written order to exchange or register the transfer of a Warrant or Warrants. 

  
 In connection with such request and in respect of each such Warrant, the
Transferor does hereby certify that the Transferor is familiar with the Warrant Agreement relating to the above captioned Warrants and the restrictions on transfers thereof as provided in such Warrant Agreement, and that the transfer of this Warrant
does not require registration under the Securities Act of 1933, as amended (the “Act”). 
  

	 	 	[INSERT NAME OF TRANSFEROR]
			
	Date:	 	By:	  	  

 *Check applicable box. 
  

 B-1Employment Agreement

 Exhibit 10.1 
  
 Employment Agreement 
 CONFIDENTIAL 
  
 THIS EMPLOYMENT AGREEMENT (the
“Agreement”) is made and entered into on the 30th day of July, 2003, by and between Syntroleum Corporation, a Delaware corporation (the “Company”), and Richard Edmonson, an individual (the “Employee”). 
  
 WHEREAS, the Company desires to enter into an employment relationship with
Employee and Employee is willing to accept such employment on the terms and conditions set forth herein. 
  
 NOW, THEREFORE, in consideration of the mutual covenants and agreements hereinafter contained, the Company and Employee hereby agree as follows.

  
 1. Employment and Duties. The Company employs Employee
in the capacity of General Counsel, or in such other position and at such location as the Company may direct or desire and Employee hereby accepts such employment, on the terms and conditions hereinafter set forth. Employee agrees to perform such
services and duties (including reasonable travel) and hold such offices at such locations as may be reasonably assigned to him from time to time by the Company and to devote substantially his full business time, energies and best efforts to the
performance thereof to the exclusion of all other business activities, except any activities disclosed to the Company in advance and consented to by the Company. 
  
 2. Compensation. As compensation for the services to be rendered by Employee to the Company pursuant to this
Agreement, Employee shall be paid the following compensation and other benefits. 
  
 (a) Salary in the amount of $185,000 per year, payable in equal bi-weekly installments in arrears, or such higher compensation as may be established by the Company from time to time. Payments of salary shall be made
in accordance with the Company’s usual payroll procedures. 
  
 (b) Employee shall be eligible to participate, to the extent he may be eligible, in any group medical and hospitalization, profit sharing, retirement, life insurance or other employee benefit plans which the Company may from time to time
offer to its employees. All group insurance provided to Employee shall be in such form and provide such coverage as is provided to other employees of the Company. 
  
 (c) All compensation payments to Employee shall be made subject to normal deductions therefrom, including federal and state
social security and withholding taxes. 
  
 3. Life
Insurance. The Company, in its discretion, may apply for and procure in its own name and for its own benefit, life insurance on the life of Employee in any amount or amounts considered advisable by the Company. Employee shall submit to any
medical or other examination and execute and deliver any application or other instrument in writing, reasonably necessary for the Company to acquire such insurance. 

 Syntroleum—Employment Agreement 

CONFIDENTIAL 
  

 4. Expenses. The Company shall reimburse Employee for his actual out-of-pocket expenses
incurred in carrying out his duties hereunder in the conduct of the Company’s business, which expenses shall be limited to ordinary and necessary items and which shall be supported by vouchers, receipts or similar documentation submitted in
accordance with the Company’s expense reimburse policy and as required by law. 
  
 5. Vacations and Leave. Employee shall be entitled to vacation and leave in accordance with the Company’s policies in effect from time to time. 
  
 6. Non-Disclosure of Confidential Information. 
  
 (a) Employee acknowledges that in and as a result of his employment by the Company, he will be making use of, acquiring,
and/or adding to the Company’s Trade Secret Information. Except as required in the performance of Employee’s duties under this Agreement, Employee will not use any Trade Secret Information of the Company for Employee’s own benefit or
purposes or disclose to third parties, directly or indirectly, any Trade Secret Information of the Company, either during or after Employee’s employment with the Company. 
  
 (b) As used in this Agreement, “Trade Secret Information” means information, including, but not limited to, any
formula, pattern, compilation, program, device, method, technique or process, that: (i) derives independent economic value, actual or potential, from not being generally known to, and not being readily ascertainable by proper means by other persons
who can obtain economic value from its disclosure or use, and (ii) is the subject of efforts that are reasonable under the circumstances to maintain its secrecy. For purposes of this Agreement, “Trade Secret Information” includes both
information disclosed to Employee by the Company and information developed by Employee in the course of his employment with the Company. The types and categories of information which are considered to be Trade Secret Information include, without
limitation: (a) specifications, descriptions, designs, dimensions, content (including chemical composition) and tolerances of products, parts and components; (b) plans, blueprints, design packages construction, part and assembly drawings and
diagrams; (c) design, construction and component costs and cost estimates; (d) the existence, terms or conditions of any agreements (including license agreements) between the Company and any third party; (e) computer programs (whether in the form of
source code, object code or any other form, including software, firmware and programmable array logic), formulas, algorithms, methods, techniques, processes, designs, specifications, diagrams, flow charts, manuals, descriptions, instructions,
explanations, improvements, and the ideas, systems and methods of operation contained in such programs; (f) information concerning or resulting from research and development work performed by the Company; (g) information concerning the
Company’s management, financial condition, financial operations, purchasing activities, sales activities, marketing activities and business plans; (h) information acquired or compiled by the Company concerning actual or potential customers;

  

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and (i) all other types and categories of information (in whatever form) with respect to which, under all the circumstances, Employee knows or has reason to
know that the Company intends or expects secrecy to be maintained and as to which the Company has made reasonable efforts to maintain its secrecy. 
  
 (c) In the event that Employee is requested or required by applicable law or by deposition, interrogatory, request for documents, subpoena, civil
investigative demand or similar process to disclose any of the Company’s Trade Secret Information, Employee shall provide the Company with prompt written notice of such request or requirement prior to making the requested disclosure, and shall
cooperate with the Company so that the Company may seek to protect the proprietary nature of such Trade Secret Information through available procedures, including a protective order or other appropriate remedy. 
  
 (d) The Company may also advise Employee from time to time as to restrictions
upon the use or disclosure of specified information which has been licensed or otherwise disclosed to the Company by third parties pursuant to license or confidential disclosure agreements which contain restrictions upon the use or disclosure of
such information. Employee agrees to abide by the restrictions upon use and/or disclosure contained in such agreements. 
  
 (e) Employee has not and will not use or disclose to the Company any confidential or proprietary information belonging to others without the written
consent of the person to whom such information is confidential, and Employee represents that his employment with the Company will not require the use of such information or the violation of any confidential relationship with any third party.

  
 7. Other Property of the Company. All documents,
encoded media, and other tangible items provided to Employee by the Company or prepared, generated or created by Employee or others in connection with any business activity of the Company are the property of the Company. Upon termination of
Employee’s employment with the Company, Employee will promptly deliver to the Company all such documents, media and other items in his possession, including all complete or partial copies, recordings, abstracts, notes or reproductions of any
kind made from or about such documents, media, items or information contained therein. Employee will neither have nor claim any right, title or interest in any trademark, service mark or trade name owned or used by the Company. 
  
 8. Inventions and Works of Authorship. 
  
 (a) Employee agrees to assign and hereby irrevocably assigns to the Company
all of Employee’s right, title and interest in and to any and all Inventions and Works of Authorship made, generated or conceived by Employee during the period of his employment with the Company, and Employee agrees to and shall promptly
disclose all such Inventions and Works of Authorship to the Company in writing. As used herein, “Invention” means any 

  

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discovery, improvement, innovation, idea, formula, or shop right (whether or not patentable, whether or not put into writing and whether or not put into
practice) made, generated or conceived by Employee (whether alone or with others) while employed by the Company. For purposes of this Agreement, any discovery, improvement, innovation, idea, formula, or shop right (whether or not patentable, whether
or not put into writing and whether or not put into practice) relating directly or indirectly to the business of the Company or to the Company’s actual or demonstrably anticipated business, research or development with respect to which Employee
files a patent application within two years after termination of employment with the Company shall be presumed to be an Invention. As used herein, “Work of Authorship” means any original work of authorship within the purview of the
copyright laws of the United States of America, and both the Company and Employee intend and agree that all Works of Authorship created by Employee in the course of his employment with the Company will be and shall constitute works made for hire
within the meaning and purview of such copyright laws. 
  
 (b)
Employee will execute and assign any and all applications, assignments, and other documents and will render all assistance which may be reasonably necessary for the Company to obtain patent, copyright, or any other form of intellectual property
protection with respect to all Inventions and Works of Authorship in all countries and will cooperate with Syntroleum as reasonably necessary to enforce any such intellectual property protection. The Company will pay Employee $200 for each patent
issued to the Company upon which Employee’s name appears as an inventor. 
  
 (c) The provisions of this Paragraph 8 do not apply to an invention for which no equipment, supplies, facility or Trade Secret Information of the Company was used and which was developed entirely on Employee’s
own time, and which does not relate (i) directly or indirectly to the business, research or development of the Company, or (ii) to the Company’s actual or demonstrably anticipated business, research or development. A reasonable determination of
the applicability of this Paragraph 8(a) to an Employee’s invention shall be made by Syntroleum after the Employee submits notification in writing of the invention. Said notice shall include adequate detail for Syntroleum to evaluate the
invention. 
  
 9. Limited Covenants Against Competition;
Non-Solicitation. 
  
 (a) Employee acknowledges that the
services he is to render to the Company are of a special and unusual character with a unique value to the Company, the loss of which cannot adequately be compensated by damages in an action at law. In view of the unique value to the Company of the
services of Employee and because of the confidential Trade Secret Information to be obtained by or disclosed to Employee, as set forth above, and as a material inducement to the Company to enter into this Agreement and to pay to Employee the
compensation stated in Paragraph 2, Employee covenants and agrees that during the period of Employee’s employment within the Company and for a period of two years following 

  

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termination of Employee’s employment with the Company for any reason, voluntarily or involuntarily, Employee will not directly or indirectly: (i) start
or participate or assist (as a proprietor, partner, shareholder, lender, investor, director, employee, consultant, independent contractor or otherwise) in starting any Competing Business; (ii) assist (as a proprietor, partner, shareholder (except as
a holder of 1% or less of the outstanding voting securities or income interest), lender, investor (except as a holder of 1% or less of the outstanding voting securities or income interest), director, employee, consultant, independent contractor or
otherwise) any existing Competing Business in the design, development or manufacture of any Competing Product; (iii) sell or assist in the sale of any Competing Product to any person or organization with whom Employee had any contact while employed
with the Company; (iv) directly or indirectly solicit for employment or employ any of the Company’s employees; or (v) become employed by a former employee of the Company. Because Syntroleum actively pursues opportunities throughout the world
and is engaged in a world-wide oriented business the Employee acknowledges the reasonableness of having no geographic limitation hereunder. 
  
 (b) Employee further acknowledges that, while employed by the Company, he will have contact with and become aware of the Company’s customers and
licensees and their respective representatives, including their names and addresses, specific needs and requirements, as well as leads and references to prospective customers and licensees. Employee further acknowledges that loss of such customers
or licensees would cause the Company great and irreparable harm. Employee agrees that for a period of two years following termination of Employee’s employment with the Company for any reason, voluntarily or involuntarily, Employee will not
directly or indirectly solicit, contact, call upon, communicate with or attempt to communicate with any customer or licensee, former customer or licensee, or prospective customer or licensee of the Company for the purpose of selling, installing,
implementing, or modifying any Competing Product. This restriction shall apply only to any customer or licensee, former customer or licensee, or prospective customer or licensee of the Company with whom Employee had contact during the last two years
of Employee’s employment with the Company. 
  
 (c) The
Employee agrees that for as long as he is employed by the Company and for a period of two years after termination of Employee’s employment with the Company for any reason, voluntarily or involuntarily, Employee will not solicit, recruit, hire
or attempt to solicit, recruit or hire, directly or by assisting others, any other employee of the Company. 
  
 (d) As used in this Agreement, (i) “Competing Business” means any person, entity or organization other than the Company which is engaged in or
is about to become engaged in the design, manufacture or sale of a Competing Product, (ii) “Competing Product” means any product (including, without limitation, any chemical formula or process) which is or may be marketed in competition
with any product marketed or under development by the Company at any time, and (iii) “contact” means interaction between Employee and a customer or licensee, former customer or licensee, or prospective customer or licensee of the 

  

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CONFIDENTIAL 
  

 
Company, which takes place to further any business relationship; or performing services for the customer or licensee, former customer or licensee, or
prospective customer or licensee on behalf of the Company. 
  
 10.
Reasonableness of Restrictions. 
  
 (a) Employee expressly
acknowledges that he has carefully read and considered the provisions of Paragraphs 6, 7, 8 and 9, and, having done so, agrees that the restrictions set forth in these Paragraphs, including, but not limited to, the time periods and geographic areas
of restriction are fair and reasonable and are reasonably required for the protection of the interests of the Company and its officers, directors, shareholders and other employees. 
  
 (b) In the event that, notwithstanding the foregoing, any of the provisions of Paragraphs 6, 7, 8 and 9 shall be held to be
invalid or unenforceable, the remaining provisions thereof shall nevertheless continue to be valid and enforceable as though the invalid or unenforceable parts had not been included therein. In the event that any provision of Paragraphs 6, 7, 8 and
9 relating to the time period and/or the areas of restriction and/or related aspects shall be declared by a court of competent jurisdiction to exceed the maximum restrictiveness such court deems reasonable and enforceable, the time period and/or
areas of restriction and/or related aspects deemed reasonable and enforceable by the court shall become and thereafter be the maximum restriction in such regard, and the restriction shall remain enforceable to the fullest extent deemed reasonable by
such court. 
  
 11. Requests for Clarification. In the
event Employee is uncertain as to the meaning of any provision of this Agreement or its application to any particular information, item or activity, Employee will inquire in writing to the Company, specifying any areas of uncertainty. The Company
will respond in writing within a reasonable time and will endeavor to clarify any areas of uncertainty, including such things as whether it considers particular information to be its Trade Secret Information or whether it considers any particular
activity or employment to be in violation of this Agreement. 
  
 12. Remedies. In the event of a breach or threatened breach of any of the covenants in Paragraphs 6, 7, 8 and 9, the Company shall have the right to seek monetary damages and equitable relief, including specific performance by means
of an injunction against Employee or against Employee’s partners, agents, representatives, servants, employers, employees, family members and/or any and all persons acting directly or indirectly by or with him, to prevent or restrain any such
breach. 
  

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CONFIDENTIAL 
  

 13. Term and Termination. 
  
 (a) The term of this Agreement shall be for an initial term of 12 months from the effective date hereof, unless sooner
terminated as provided herein, and shall thereafter be automatically renewed for successive terms of 12 months each unless sooner terminated as provided herein. 
  

(b) Employment of Employee under this Agreement may be terminated: 
  
 (i) by the Company upon the death of Employee. 
  
 (ii) by the Company if Employee becomes disabled. For the
purposes of this Agreement, Employee will be deemed disabled if he (i) has been declared legally incompetent by a final court decree (the date of such decree being deemed to be the date on which the disability occurred), or (ii) receives disability
insurance benefits from any disability income insurance policy maintained by the Company for a period of three consecutive months, or (iii) has been found to be disabled pursuant to a disability determination. A “disability determination”
means a finding that Employee, because of a medically determinable disease, injury, or other mental or physical disability, is unable to perform substantially all of his regular duties to the Company and that such disability is determined or
reasonably expected to last at least six months. The disability determination shall be based upon the written opinion of the physician regularly attending Employee whose disability is in question. If the Company disagrees with the opinion of this
physician (the “First Physician”), it may engage, at its own expense, another physician of its choice (the “Second Physician”) to examine Employee. If the First and Second Physicians agree in writing that Employee is or is not
disabled, their written opinion shall, except as otherwise set forth in this subsection, be conclusive on the issue of disability. If the First and Second Physicians disagree on the disability of Employee, they shall choose a third consulting
physician (whose expense shall be borne by the Company), and the written opinion of a majority of these three physicians shall, except as otherwise provided in this subsection, be conclusive as to Employee’s disability. The date of any written
opinion conclusively finding Employee to be disabled is the date on which the disability will be deemed to have occurred. If there is a conclusive finding that Employee is not totally disabled, the Company shall have the right to request additional
disability determinations provided it agrees to pay all the expenses of the disability determinations and does not request an additional disability determination more frequently than once every three months. In connection with any disability
determination, Employee hereby consents to any required medical examination, and agrees to furnish any medical information requested by any examining physician and to waive any applicable physician-patient privilege that may arise because of such
examination. All physicians except the First Physician must be board-certified in the specialty most closely related to the nature of the disability alleged to exist. 
  
  

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 (iii) by the Company when Employee reaches mandatory retirement age under any
retirement policy applicable to all executive officers adopted by the Company. 
  
 (iv) by mutual agreement of Employee and the Company. 
  
 (v) by the Company upon the dissolution and liquidation of the Company (other than as part of a
reorganization, merger, consolidation or sale of all or substantially all of the assets of the Company whereby the business of the Company is continued). 
  
 (vi) by the Company for just cause at any time upon written notice. For purposes of this Agreement, “just cause” shall mean any
one or more of the following: (A) Employee’s material breach of his obligations, duties and responsibilities under any term or provision of this Agreement, which breach remains uncured for a period of five days after written notice by the
Company to Employee; (B) Employee’s failure to adhere to the reasonable standards of performance prescribed by the Company; (C) Employee’s act of insubordination to the Company’s Board of Directors; (D) Employee’s gross
negligence or willful misconduct in the performance of his duties under this Agreement; (E) Employee’s dishonesty, fraud, misappropriation or embezzlement in the course of, related to or connected with the business of the Company; (F)
Employee’s conviction of a felony; or (G) Employee’s failure (after written notice to Employee of such failure and Employee not correcting such failure within five days of such notice) to devote his time, attention and best efforts to the
business of the Company as provided in this Agreement. 
  
 (vii) by either the Company or Employee upon 60 days written notice. 
  
 (c) Any termination of Employee’s employment, either by the Company or Employee, shall be communicated by a written notice of termination to the other party. 
  
 (d) If Employee’s employment is terminated pursuant to the terms of this
Agreement for any reason, Employee shall be entitled to all arrearages of salary and expenses up to and including the date of termination but shall not be entitled to further compensation. Provided, that if, at any time after the first 12 months
from the date of this Agreement, Employee’s employment is terminated by the Company for any reason other than Employee’s death, disability or retirement, the Company’s dissolution or just cause as provided in Paragraphs 13(b)(i),
(ii), (iii), (v) or (vi), respectively, Employee shall be entitled to and the Company shall pay Employee all arrearages of salary and expenses up to and including the date of termination and, in addition, Employee’s monthly base salary for an
additional period of 24 months. 
  

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 (e) Upon expiration of the term of this Agreement or upon earlier termination of this Agreement,
Employee shall deliver all Trade Secret Information of the Company to an authorized representative of the Company, and the non-disclosure provisions of Paragraph 6 shall survive such expiration or termination and shall remain in full force
and effect for a period of 15 years from such expiration or termination. 
  
 14. Change of Control. 
  
 (a) In the event of a Change of Control of the Company and (i) during the one-year period immediately following any Change of Control, the Company terminates Employee’s employment for any reason other than Employee’s death,
disability, retirement or just cause as provided in Paragraphs 13(b)(i), (ii), (iii) and (vi), respectively, (ii) the Employee terminates his employment for Good Reason, or (iii) during the Window Period the Company or Employee terminates
Employee’s employment for any reason, then the Company or its successor shall pay Employee his full base salary in effect at the time of the notice of termination through the date of termination, and in lieu of any further salary payments for
periods subsequent to the date of termination, the Company or its successor shall pay Employee as severance pay an amount equal to two times Employee’s full base salary in effect on the date of termination payable in 24 equal monthly
installments beginning on the first day of the first calendar month following the date of Employee’s termination and continuing on the first day of each month thereafter until paid. 
  
 (b) Anything in this Agreement to the contrary notwithstanding, if a Change of Control occurs and if the Employee’s
employment with the Company is terminated prior to the date on which the Change of Control occurs, and if it is reasonably demonstrated by the Employee that such termination of employment (i) was at the request of a third party who has taken steps
reasonably calculated to effect the Change of Control or (ii) otherwise arose in connection with or anticipation of the Change of Control, then for all purposes of this Agreement, the “Change of Control” shall be deemed to have occurred on
the date immediately prior to the date of such termination of employment. 
  
 (c) as used in this Agreement, the terms set forth below shall have the following respective meanings: 
  
 (i) “Affiliate” shall have the meaning ascribed to such term in Rule 12b-2 of the General Rules and Regulations under the Exchange Act, as in
effect on the Agreement Effective Date. 
  
 (ii) “Agreement
Effective Date” shall mean July 30, 2003. 
  
 (iii)
“Associate” shall mean, with reference to any Person, (a) any corporation, firm, partnership, association, unincorporated organization or other entity (other than the Company or a subsidiary of the Company) of which such Person is an
officer or 

  

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general partner (or officer or general partner of a general partner) or is, directly or indirectly, the Beneficial Owner of 10% or more of any class of
equity securities, (b) any trust or other estate in which such Person has a substantial beneficial interest or as to which such Person serves as trustee or in a similar fiduciary capacity and (c) any relative or spouse of such Person, or any
relative of such spouse, who has the same home as such Person. 
  
 (iv) “Beneficial Owner” shall mean, with reference to any securities, any Person if: 
  
 (a) such Person or any of such Person’s Affiliates and Associates, directly or indirectly, is the “beneficial owner” of (as
determined pursuant to Rule 13d-3 of the General Rules and Regulations under the Exchange Act, as in effect on the Agreement Effective Date) such securities or otherwise has the right to vote or dispose of such securities, including pursuant to any
agreement, arrangement or understanding (whether or not in writing); provided, however, that a Person shall not be deemed the “Beneficial Owner” of, or to “beneficially own,” any security under this subsection (a) as a result of
an agreement, arrangement or understanding to vote such security if such agreement, arrangement or understanding: (i) arises solely from a revocable proxy or consent given in response to a public (i.e., not including a solicitation exempted
by Rule 14a-2(b)(2) of the General Rules and Regulations under the Exchange Act) proxy or consent solicitation made pursuant to, and in accordance with, the applicable provisions of the General Rules and Regulations under the Exchange Act and (ii)
is not then reportable by such Person on Schedule 13D under the Exchange Act (or any comparable or successor report); 
  
 (b) such Person or any of such Person’s Affiliates and Associates, directly or indirectly, has the right or obligation to acquire
such securities (whether such right or obligation is exercisable or effective immediately or only after the passage of time or the occurrence of an event) pursuant to any agreement, arrangement or understanding (whether or not in writing) or upon
the exercise of conversion rights, exchange rights, other rights, warrants or options, or otherwise; provided, however, that a Person shall not be deemed the Beneficial Owner of, or to “beneficially own,” (i) securities tendered pursuant
to a tender or exchange offer made by such Person or any of such Person’s Affiliates or Associates until such tendered securities are accepted for purchase or exchange or (ii) securities issuable upon exercise of Exempt Rights; or 

 
 (c) such Person or any of such Person’s Affiliates
or Associates (i) has any agreement, arrangement or understanding (whether or not in writing) with any other Person (or any Affiliate or Associate thereof) that beneficially owns such securities for the purpose of acquiring, holding, voting (except
as set forth in the proviso to subsection (a) of this definition) or disposing of such securities or (ii) is a member of a group (as that term is used in Rule 13d-5(b) of the General Rules and Regulations under the Exchange Act) that includes any
other Person that beneficially owns such securities; 
  

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 provided, however, that nothing in this definition shall cause a Person engaged in business as an underwriter of
securities to be the Beneficial Owner of, or to “beneficially own,” any securities acquired through such Person’s participation in good faith in a firm commitment underwriting until the expiration of 40 days after the date of such
acquisition. For purposes hereof, “voting” a security shall include voting, granting a proxy, consenting or making a request or demand relating to corporate action (including, without limitation, a demand for a stockholder list, to call a
stockholder meeting or to inspect corporate books and records) or otherwise giving an authorization (within the meaning of Section 14(a) of the Exchange Act) in respect of such security. 
  
 The terms “beneficially own” and “beneficially owning” shall have meanings that are correlative to this
definition of the term “Beneficial Owner.” 
  
 (v)
“Change of Control” shall mean any of the following (provided, however, that without limiting the generality of any other provision hereof, no Change of Control shall be deemed to have occurred as a result of the consummation of any of the
transactions contemplated by the Agreement and Plan of Merger dated as of March 30, 1998 by and between SLH Corporation, a Kansas corporation, and the Company (the “Merger Agreement”)): 
  
 (a) any Person (other than an Exempt Person) shall become
the Beneficial Owner of 30% or more of the shares of Common Stock then outstanding or 30% or more of the combined voting power of the Voting Stock of the Company then outstanding; provided, however, that no Change of Control shall be deemed to occur
for purposes of this subsection (a) if such Person shall become a Beneficial Owner of 30% or more of the shares of Common Stock or 30% or more of the combined voting power of the Voting Stock of the Company solely as a result of (i) an Exempt
Transaction or (ii) an acquisition by a Person pursuant to a reorganization, merger or consolidation, if, following such reorganization, merger or consolidation, the conditions described in clauses (i), (ii) and (iii) of subsection (c) of this
definition are satisfied; 
  
 (b) individuals
who, as of the Agreement Effective Date, constitute the Board (the “Incumbent Board”) cease for any reason to constitute at least a majority of the Board; provided, however, that any individual becoming a director subsequent to the
Agreement Effective Date whose election, or nomination for election by the Company’s shareholders, was approved by a vote of at least a majority of the directors then comprising the Incumbent Board shall be considered as though such individual
were a member of the Incumbent Board; provided, further, that there shall be excluded, for this purpose, any such individual whose initial assumption of office occurs as a result of any actual or threatened election contest that is subject to the
provisions of Rule 14a-11 under the Exchange Act; 
  

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 (c) approval by the shareholders of the Company of a reorganization, merger or
consolidation, in each case, unless, following such reorganization, merger or consolidation, (i) more than 80% of the then outstanding shares of common stock of the corporation resulting from such reorganization, merger or consolidation and the
combined voting power of the then outstanding Voting Stock of such corporation is then beneficially owned, directly or indirectly, by all or substantially all of the Persons who were the Beneficial Owners of the outstanding Common Stock immediately
prior to such reorganization, merger or consolidation in substantially the same proportions as their ownership, immediately prior to such reorganization, merger or consolidation, of the outstanding Common Stock, (ii) no Person (excluding any Exempt
Person or any Person beneficially owning, immediately prior to such reorganization, merger or consolidation, directly or indirectly, 30% or more of the Common Stock then outstanding or 30% or more of the combined voting power of the Voting Stock of
the Company then outstanding) beneficially owns, directly or indirectly, 30% or more of the then outstanding shares of common stock of the corporation resulting from such reorganization, merger or consolidation or the combined voting power of the
then outstanding Voting Stock of such corporation and (iii) at least a majority of the members of the board of directors of the corporation resulting from such reorganization, merger or consolidation were members of the Incumbent Board at the time
of the execution of the initial agreement or initial action by the Board providing for such reorganization, merger or consolidation; or 
  
 (d) approval by the shareholders of the Company of (i) a complete liquidation or dissolution of the Company unless such liquidation or
dissolution is approved as part of a plan of liquidation and dissolution involving a sale or disposition of all or substantially all of the assets of the Company to a corporation with respect to which, following such sale or other disposition, all
of the requirements of clauses (ii)(A), (B) and (C) of this subsection (d) are satisfied, or (ii) the sale or other disposition of all or substantially all of the assets of the Company, other than to a corporation, with respect to which, following
such sale or other disposition, (A) more than 80% of the then outstanding shares of common stock of such corporation and the combined voting power of the Voting Stock of such corporation is then beneficially owned, directly or indirectly, by all or
substantially all of the Persons who were the Beneficial Owners of the outstanding Common Stock immediately prior to such sale or other disposition in substantially the same proportion as their ownership, immediately prior to such sale or other
disposition, of the outstanding Common Stock, (B) no Person (excluding any Exempt Person and any Person beneficially owning, immediately prior to such sale or other disposition, directly or indirectly, 30% or more of the Common Stock then
outstanding or 30% or more of the combined voting power of the Voting Stock of the Company then outstanding) 
  

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CONFIDENTIAL 
  

 
beneficially owns, directly or indirectly, 30% or more of the then outstanding shares of common stock of such corporation and the combined voting power of
the then outstanding Voting Stock of such corporation and (C) at least a majority of the members of the board of directors of such corporation were members of the Incumbent Board at the time of the execution of the initial agreement or initial
action of the Board providing for such sale or other disposition of assets of the Company. 
  
 (vi) “Exchange Act” shall mean the Securities Exchange Act of 1934, as amended. 
  
 (vii) “Exempt Person” shall mean the Company, any subsidiary of the Company, any employee benefit plan of the Company or any subsidiary of the
Company, and any Person organized, appointed or established by the Company for or pursuant to the terms of any such plan. 
  
 (viii) “Exempt Rights” shall mean any rights to purchase shares of Common Stock or other Voting Stock of the Company if at the time of the
issuance thereof such rights are not separable from such Common Stock or other Voting Stock (i.e., are not transferable otherwise than in connection with a transfer of the underlying Common Stock or other Voting Stock) except upon the
occurrence of a contingency, whether such rights exist as of the Agreement Effective Date or are thereafter issued by the Company as a dividend on shares of Common Stock or other Voting Securities or otherwise. 
  
 (ix) “Exempt Transaction” shall mean an increase in the percentage
of the outstanding shares of Common Stock or the percentage of the combined voting power of the outstanding Voting Stock of the Company beneficially owned by any Person solely as a result of a reduction in the number of shares of Common Stock then
outstanding due to the repurchase of Common Stock or Voting Stock by the Company, unless and until such time as (a) such Person or any Affiliate or Associate of such Person shall purchase or otherwise become the Beneficial Owner of additional shares
of Common Stock constituting 1% or more of the then outstanding shares of Common Stock or additional Voting Stock representing 1% or more of the combined voting power of the then outstanding Voting Stock, or (b) any other Person (or Persons) who is
(or collectively are) the Beneficial Owner of shares of Common Stock constituting 1% or more of the then outstanding shares of Common Stock or Voting Stock representing 1% or more of the combined voting power of the then outstanding Voting Stock
shall become an Affiliate or Associate of such Person. 
  
 (x)
“Good Reason” shall mean: 
  
 (a) the
assignment to the Employee of any duties materially inconsistent in any respect with the Employee’s position (including status, offices, titles and reporting requirements), authority, duties or responsibilities as contemplated by Section 1 of
this Agreement, or any other action by the 
  

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Company which results in a diminution in such position, authority, duties or responsibilities, excluding for this purpose an isolated, insubstantial and
inadvertent action not taken in bad faith and which is remedied by the Company promptly after receipt of notice thereof given by the Employee; 
  
 (b) any material failure by the Company to comply with any of the provisions of this Agreement, other than an isolated, insubstantial and
inadvertent failure not occurring in bad faith and which is remedied by the Company promptly after receipt of notice thereof given by the Employee; 
  
 (c) the Company’s requiring the Employee to be based at any office outside the Tulsa metropolitan area; 
  
 (d) any purported termination by the Company of the
Employee’s employment otherwise than as expressly permitted by this Agreement; or 
  
 (xi) “Person” shall mean any individual, firm, corporation, partnership, association, trust, unincorporated organization or other entity. 
  
 (xii) “Voting Stock” shall mean, with respect to a corporation, all securities of such corporation of any class or
series that are entitled to vote generally in the election of directors of such corporation (excluding any class or series that would be entitled so to vote by reason of the occurrence of any contingency, so long as such contingency has not
occurred). 
  
 (xiii) “Window Period” shall mean the
60-day period immediately following elapse of one year after any Change of Control. 
  
 15. Resignation Upon Termination. In the event of termination of this Agreement other than for death, Employee agrees to resign from all positions held in the Company, including without limitation any position
as a director, officer, agent, trustee or consultant of the Company or any affiliate of the Company. 
  
 16. Notice to Subsequent Employers. For a period of two years after termination of Employee’s employment with the Company for any reason,
Employee will inform any new employer (before accepting employment) of the obligations of Employee under Paragraphs 6, 7, 8, 9, and 10 of this Agreement. 
  
 17. Obligations Unconditional. The obligations of the parties under this Agreement are unconditional and do not depend upon the performance of any
agreements, duties, obligations, or terms outside this Agreement. 
  

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 18. Waiver. A party’s failure to insist on compliance or enforcement of any provision of
this Agreement shall not affect the validity or enforceability or constitute a waiver of future enforcement of that provision or of any other provision of this Agreement by that party or any other party. 
  
 19. Governing Law. THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED
IN ACCORDANCE WITH THE LAWS OF THE STATE OF OKLAHOMA, UNITED STATES OF AMERICA, WITHOUT REGARD TO CONFLICT OF LAW PROVISIONS THEREOF. The Company and Employee expressly and irrevocably consent and submit to the nonexclusive jurisdiction of any state
or federal court sitting in Tulsa County, Oklahoma and agree that, to the fullest extent allowed by law, such Oklahoma state or federal courts shall have jurisdiction over any action, suit or proceeding arising out of or relating to this Agreement.
The Company and Employee each irrevocably waive, to the fullest extent allowed by law, any objection either of them may have to the laying of venue of any such suit, action or proceeding brought in any state or federal court sitting in Tulsa County,
Oklahoma based upon a claim that such court is inconvenient or otherwise an objectionable forum. Any process in any action, suit or proceeding arising out of or relating to this Agreement may, among other methods, be served upon the Company or
Employee by delivering it or mailing it to their respective addresses set forth herein. Any such delivery or mail service shall be deemed to have the same force and effect as personal service in the State of Oklahoma. 
  
 20. Severability. If for any reason any paragraph, term or provision
of this Agreement is held to be invalid or unenforceable for any reason, such invalidity or unenforceability shall not affect any other provision hereof, and this Agreement shall be construed and enforced as if such provision had not been included
herein and all other valid provisions herein shall remain in full force and effect. If for any reason the restrictions and covenants contained herein are held to cover a geographical area or be for a length of time which is unreasonable or
unenforceable, or in any other way are construed to be too broad or to any extent invalid, then to the extent the same are or would be valid or enforceable under applicable law, any court of competent jurisdiction shall construe and interpret or
reform this Agreement to provide for a covenant having the maximum area, time or other provisions (not greater than those contained herein) as shall be valid and enforceable under such applicable law. 
  
 21. Jurisdiction. The Company and Employee intend to and hereby confer
jurisdiction to enforce the provisions of this Agreement and any restrictive covenants contained herein upon the courts of any jurisdiction within the geographical scope of such covenants. If the courts of any one or more of such jurisdictions hold
the provisions of this Agreement or any of the restrictive covenants contained herein unenforceable by reason of the breadth of such scope or otherwise, it is the intention of the Company and Employee that such determination not bar or in any way
affect the Company’s right to the relief provided herein in the courts of any other jurisdiction within the geographical scope of such covenants, as to breaches of such covenants, such covenants as they relate to each jurisdiction being, for
this purpose, severable into diverse and independent covenants. 
  

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CONFIDENTIAL 
  

 22. Notice. Any and all notices required or permitted herein shall be deemed delivered if
delivered personally or if mailed by registered or certified mail to the Company at its principal place of business and to Employee at the address hereinafter set forth following Employee’s signature, or at such other address or addresses as
either party may hereafter designate in writing to the other. 
  
 23. Amendments. This Agreement may be amended at any time by mutual consent of the parties hereto, with any such amendment to be invalid unless in writing, signed by the Company and Employee. 
  
 24. Burden and Benefit. This Agreement, together with any amendments
hereto, shall be binding upon and shall inure to the benefit of the parties hereto and their respective successors, assigns, heirs and personal representatives. The Company may, in its sole discretion, assign this Agreement or its rights hereunder
to any parent, affiliate, shareholder, or successor of the Company, or to any person or entity which purchases substantially all of the assets of the Company. Employee may not transfer or assign this Agreement or any of Employee’s rights or
obligations under this Agreement. 
  
 25. References to Gender
and Number Terms. In construing this Agreement, feminine or number pronouns shall be substituted for those masculine in form and vice versa, and plural terms shall be substituted for singular and singular for plural in any place which the
context so requires. 
  
 26. Headings. The various headings
in this Agreement are inserted for convenience only and are not part of the Agreement. 
  
 27. Entire Agreement. This Agreement contains the entire understanding and agreement between the parties relating to the subject matter hereof. 
  
 28. Counterparts. This Agreement may be executed in one or more counterparts, and all such counterparts shall
constitute one and the same instrument. 
  
 29. Severance
Compensation. In the event of termination of Employee’s employment with the Company under the terms of this Agreement which provide for payment by the Company to Employee of severance compensation, the amount of such severance compensation
shall in no event be greater than the amount which would be deductible by the Company under Section 280G of the Internal Revenue Code of 1986, as amended (the “Code”), after taking into consideration all payments to Employee covered by
Code Section 280G which Employee receives or is deemed to receive (i) under this Agreement; (ii) under the Company’s 1993 Stock Option and Incentive Plan, as amended, 
  

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by reason of the acceleration of the right to exercise any options (including any related stock appreciation rights) granted thereunder or the acceleration
of the vesting of any restricted stock awards granted thereunder; or (iii) under any new plan or arrangement implemented by the Company after the date of this Agreement which would otherwise be considered a “parachute payment” under
Section 280G. In the event such payments exceed the amount which would be deductible by the Company under Code Section 280G, the timing of such payments shall be extended or otherwise modified such that such payments shall be deductible by the
Company under Code Section 280G and in a manner which, to the extent possible, provides Employee the full benefit of such payments as originally agreed to. 
  
 IN WITNESS WHEREOF, the Company and Employee have duly executed this Agreement as of the date and year first above written. 
  

	 COMPANY:

	
	 SYNTROLEUM CORPORATION

		
	 By:
	 	  

	 	 	John B. Holmes, Jr. President
		
	 	 	 Syntroleum Corporation.

	 	 	 1350 South Boulder, Suite 1100

	 	 	 Tulsa, Oklahoma 74119

	
	 EMPLOYEE:

		
	 By:
	 	  

	 	 	Richard Edmonson
		
	 	 	 Home address:

	 	 	  

	 	 	  

  

 17

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