Document:

Form of Incentive Stock Option Agreement

 Exhibit 10.4 
 RADYNE CORPORATION 
 INCENTIVE STOCK OPTION AGREEMENT 
 This Incentive Stock Option Agreement (“Agreement”) is between Radyne Corporation (“Company”) and
                                 (the “Optionee”), and is
effective as of the      day of             , 2007 (“Date of Grant”). 
 RECITALS 
 A. The Company has adopted the Radyne Corporation 2007 Stock
Incentive Plan (“Plan”) to provide incentives to attract and retain those individuals whose services are considered unusually valuable by providing them an opportunity to own stock in the Company. 
 B. The Company believes that entering into this Agreement with the Optionee is consistent with those purposes. Any capitalized term not defined in this
Agreement will have the meaning as set forth in the Plan. 
 NOW, THEREFORE, the Company and Optionee agree as follows: 
 AGREEMENT 
 1. GRANT OF
OPTION. Subject to the terms of this Agreement and Article 7 of the Plan, the Company grants to the Optionee the right and option to purchase from the Company for cash all or any part of an aggregate of
         shares of Common Stock (“Option”) of the Company (“Stock”). The delivery of any document evidencing the Option is subject to the provisions of
Section 7.1(e) of the Plan. The Option granted under this Agreement is intended to be an “incentive stock option” (“ISO”) under Section 422 of the Internal Revenue Code of 1986, as amended (the
“Code”). 
 2. PURCHASE PRICE. The purchase price under this Agreement is
$             per share of Stock, as determined by the Committee, which shall not be less than the Fair Market Value of a share of Stock on the Date of Grant. 
 3. VESTING OF OPTION. The Option shall vest and be exercisable according to the following schedule: 
 [insert vesting schedule] 
 4.
EXERCISE OF OPTION. This Option may be exercised, to the extent vested (under 3 above), in whole or in part at anytime before the Option expires by delivery of a written notice of exercise (under 5 below) and payment of the purchase
price. The purchase price may be paid in cash or such other method permitted by the Committee under Section 7.1(d) of the Plan and communicated to the Optionee before the date the Optionee exercises the Option. 

 5. METHOD OF EXERCISING OPTION. Subject to the terms of this Agreement, the Option may be
exercised by timely delivery to the Company of written notice, which notice shall be effective on the date received by the Company. The notice shall state the Optionee’s election to exercise the Option and the number of underlying shares in
respect of which an election to exercise has been made. Such notice shall be signed by the Optionee, or if the Option is exercised by a person or persons other than the Optionee because of the Optionee’s death, such notice must be signed by
such other person or persons and shall be accompanied by proof acceptable to the Company of the legal right of such person or persons to exercise the Option. 
 6. TERM OF OPTION. The Option granted under this Agreement expires, unless sooner
terminated, ten (10) years from the Date of Grant, through and including the normal close of business of the Company on the tenth (10th) anniversary of the Date of Grant (“Expiration Date”). 
 7. TERMINATION OF EMPLOYMENT
OR SERVICE. 
 a. If the Optionee’s employment with, or service to, the Company terminates for any reason other
than death or Disability, the Optionee may at any time within the 90-day period after the date of his or her termination of employment or service exercise the Option to the extent that the Optionee was entitled to exercise the Option at the date of
termination, provided that in no event shall the Option be exercisable after the Expiration Date. For purposes of this Agreement, the Optionee’s service will be deemed to continue if the Optionee ceases to provide services as an employee of the
Company or any subsidiary, but continues to provide services immediately after his or her termination of employment as a non-employee director, consultant or independent contractor. If the Optionee dies or becomes Disabled while in the service of
the Company or within three months following termination of such service the Option to the extent it is then exercisable may nevertheless be exercised by the Optionee or the Optionee’s personal representative within the three-month period
following the date of death or Disability of the Optionee, provided that in no event shall the Option be exercisable after the Expiration Date. 
 b. If the Optionee ceases to be employed by or to provide services to the Company by reason of his death or Disability the Option will lapse on the earlier of (i) the Option’s expiration date, or
(ii) one year after the date the Participant terminates employment on account of Disability or death. 
 8. NON-TRANSFERABILITY OF
RIGHTS. Optionee may not assign or transfer Optionee’s rights under this Agreement, nor may Optionee subject such rights (or any of them) to execution, attachment, garnishment, or similar process, except as permitted under
Section 13.4 of the Plan. Any such impermissible attempted assignment or transfer by Optionee shall be null and void and shall not be recognized by the Company. 
 9. RIGHTS OF OPTIONEE. The Optionee will have no rights as a shareholder of the Company with respect to the grant of the Option under this Agreement until and to the extent the Option is exercised and
the Company issues shares of Stock to the Optionee. 
  

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 10. NO RIGHT TO CONTINUED EMPLOYMENT OR SERVICE. This Option shall not confer upon
Optionee any right with respect to continuance of employment or service with the Company or any Subsidiary, nor shall it interfere in any way with the right of the Company to terminate his or her employment or service at any time. 
 11. FEDERAL AND STATE TAXES. Optionee may incur certain liabilities for Federal, state, or local taxes in connection with the exercise of
the Option hereunder, and the Company may be required by law to withhold such taxes. Upon determination of the year in which such taxes are due and the determination by the Company of the amount of taxes required to be withheld, Optionee shall pay
an amount equal to the amount of Federal, state, or local taxes required to be withheld to the Company. If Optionee fails to make such payment in a timely manner, the Company may withhold and set-off against compensation and any other amounts
payable to the Optionee the amount of such required payment. 
 12. ADJUSTMENT OF SHARES. The number of shares of Stock issued
to Optionee pursuant to this Agreement shall be adjusted by the Committee pursuant to Article 14 of the Plan, in its discretion, in the event of a change in the Company’s capital structure. 
 13. AMENDMENT OF AGREEMENT. This Agreement may only be amended with the written approval of Optionee and the Company. 
 14. GOVERNING LAW. This Agreement shall be governed in all respects, whether as to validity, construction, capacity, performance, or
otherwise, by the laws of the state of Delaware, without regard to conflicts-of-laws principles that would require the application of any other law. 
 15. SEVERABILITY. If any provision of this Agreement, or the application of any such provision to any person or circumstance, is held to be unenforceable or invalid by any court of competent jurisdiction
or under any applicable law, the parties hereto shall negotiate an equitable adjustment to the provisions of this Agreement with the view to effecting, to the greatest extent possible, the original purpose and intent of this Agreement, and in any
event, the validity and enforceability of the remaining provisions of this Agreement shall not be affected thereby. 
 16. ENTIRE
AGREEMENT. This Agreement constitutes the entire, final, and complete agreement between the parties hereto with respect to the subject matter hereof and supersedes all prior agreements, promises, understandings, negotiations,
representations, and commitments, both written and oral, between the parties hereto with respect to the subject matter hereof. Neither party hereto shall be bound by or be liable for any statement, representation, promise, inducement, commitment, or
understanding of any kind whatsoever not expressly set forth in this Agreement. 
 17. TAX INFORMATION AND NOTICE OF DISQUALIFYING
DISPOSITION. This Option is intended to be eligible for treatment as an Incentive Stock Option under Section 422 of the Code. Whether this Option will receive such tax treatment will depend, in part, on the actions by the Optionee after
exercise of this Option. For example, if the Optionee disposes of any of the Stock acquired under this Option within two years after the Date 

  

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of Grant and within one year of the date of exercise of this Option, the Optionee may lose the benefits of Section 422 of the Code. Accordingly, the
Company makes no representations by way of the Plan, this Agreement, or otherwise, with respect to the actual tax consequences of the grant or exercise of this Option or the subsequent disposition of the Stock acquired under this Option. 

If the Optionee sells or makes a disposition (within the meaning of Section 422 of the Code) of any of the Stock acquired under this Option prior
to the later of (i) one year from the date of exercise of such Stock, or (ii) two years from the Date of Grant, the Optionee agrees to give written notice to the Company of such disposition. The notice shall include the Optionee’s
name, the number, exercise price and exercise date of the shares of Stock disposed of, and the date of disposition. 
 IN WITNESS WHEREOF,
the Company has caused this Agreement to be executed by its duly authorized representative and Optionee has signed this Agreement, and this Agreement shall be effective as of the day and year first written above. 
  

					
	RADYNE CORPORATION
		
	 By:
	 	  

		 	 Its:
	 	  

	
	OPTIONEE:
	
	  

  

 4Form of Subscription Agreement

 Exhibit 4.2 
 LIBERTY RENEWABLE FUELS LLC 
 SUBSCRIPTION AGREEMENT 
 Limited Liability Company Membership Units 
 $5,000 PER UNIT 
 MINIMUM INVESTMENT OF 4 UNITS ($20,000) 
 1 UNIT INCREMENTS THEREAFTER ($5,000) 
 The undersigned subscriber, desiring to become a member
of Liberty Renewable Fuels LLC (“Liberty”), a Delaware limited liability company, with its principal place of business at 3508 E. M-21, Corunna, Michigan 48817, hereby subscribes for the purchase of the membership interests of
Liberty and agrees to pay the related purchase price, identified below. 
  

	A.	SUBSCRIBER INFORMATION. Please print your individual or entity name and address. Joint subscribers should provide their respective names. Your name and address will be
recorded exactly as printed below. 

  

					
	1.	  	Subscriber’s Printed Name:	  	  

			
	2.	  	Title, if applicable:	  	  

			
	3.	  	Subscriber’s Address:	  	
			
		  	 Street
	  	  

			
		  	 City, State, Zip Code:
	  	  

			
	4.	  	Email Address:	  	  

  

	B.	NUMBER OF UNITS PURCHASED. You must purchase at least 4 units. Your ownership interest may not exceed 20% of all our outstanding membership units. We presently have
             units outstanding. Therefore, the maximum number of units you may own is              units if we sell
the minimum offering and              units if we sell the maximum. 

  

	
	 

 (“Number of Units”) 
  

	C.	PURCHASE PRICE. Indicate the dollar amount of your investment (minimum investment is $20,000). 

  

									
	 1. Total Purchase Price
 ($5,000.00 Per Unit multiplied
 by the Number in box B above.)
	 	    =    	  	 2. 1st Installment
 (20% of the Total Purchase
 Price)
	 	    +    	  	 3. 2nd Installment
 (80% of the Total Purchase
 Price)

	 	 		  		 		  	 
	  	 	    =    	  	  	 	    +    	  	  
	(“Subscription Price”)	 		  		 		  	 

  

	D.	ESCROW PROCEDURES. Proceeds from subscriptions for the units will be deposited in an interest-bearing escrow account that we have established with Fifth Third Bank, as escrow
agent under a written escrow agreement. When (1) the proceeds deposited in the escrow account equal at least $10,000,000 in subscription proceeds (exclusive of interest) and (2) we have received written debt financing commitments providing for
sufficient debt financing which, combined with the subscribed for offering proceeds and funds we raised in previous private placement offerings, are equal to at least our then estimated total ethanol plant project cost, we will mail written notice
to all subscribers that the payment of the remainder of the purchase price is due to be paid to the escrow agent within 15 days. The escrow agent will not release funds from the escrow account to Liberty until (1) the total subscription proceeds for
fully-paid units deposited in the escrow account equals or exceeds $50,000,000 (exclusive of interest) and (2) the escrow agent receives a copy of Liberty’s written debt financing commitments. When these conditions are met (the “Escrow
Release Date”), the escrow account will close and all proceeds will be distributed to Liberty. 

  

	E.	GENERAL INSTRUCTION FOR SUBSCRIBERS: You should read Liberty’s Prospectus dated
                     (the “Prospectus”) in its entirety, including exhibits, for a complete explanation of an investment in
Liberty Renewable Fuels LLC. 

 INSTRUCTIONS — YOU MUST FOLLOW STEPS 1 THROUGH 3 BELOW: 

 

	 	1.	Complete all information required in this Subscription Agreement, and date and sign the Subscription Agreement on page 5 and the Member Signature Page to our Company Agreement
attached to this Subscription Agreement as Exhibit A. 

  

	 	2.	Immediately provide your personal (or business) check for twenty percent (20%) of the amount of your investment (as determined in Subscription Price and Number of Units purchased on
page 1) made payable to “Fifth Third Bank, Escrow Agent for Liberty Renewable Fuels LLC.” 

  

	 	3.	If this Subscription Agreement is submitted following the Escrow Release Date, immediately provide your personal (or business) check for one hundred percent (100%) of the amount of
your investment (as determined in Subscription Price and Number of Units purchased on page 1) made payable to “Liberty Renewable Fuels, LLC.” 

  

	 	4.	Deliver the original executed documents referenced in Item 1 of these Instructions, together with your personal or business check described in Item 2 or Item 3, as
applicable, of these Instructions to the following: 

  

 1 

					
		 	 Liberty Renewable Fuels LLC
 3508 E. M-21

Corunna, Michigan 48817
 Attention: David Skjaerlund
	 	

 If we accept your investment, your funds will be at-risk upon the initial closing as described in the Prospectus.
Liberty may, in its sole discretion, reject or accept any part or all of your subscription. If Liberty rejects your subscription, your Subscription Agreement and investment will be returned to your promptly. Liberty may not consider the acceptance
or rejection of your subscription until a future date near the end of this offering. 
 YOU MAY DIRECT YOUR QUESTIONS TO ONE OF OUR MANAGERS LISTED BELOW
AT (989) 743-1042, OR AT OUR BUSINESS ADDRESS LIBERTY RENEWABLE FUELS LLC, 3508 E. M-21, CORUNNA, MICHIGAN 48817: 
  

			
	 NAME
	  	 POSITION

	David Skjaerlund	  	Manager, President & Chief Executive Officer
	Tom Pumford	  	Manager, Chief Financial Officer and Secretary
	Wilson Lauer	  	Manager & Vice President
	Dennis Muchmore	  	Manager & Vice President
	Bob Kennedy	  	Manager & Vice President
	Matt Dutcher	  	Manager & Vice President

  

	F.	ADDITIONAL SUBSCRIBER INFORMATION. The subscriber, named above, certifies the following under the penalties of perjury: 

  

	 	1.	FORM OF OWNERSHIP. Check the appropriate box (one only) to indicate the form of ownership. If the subscriber is a Custodian, Corporation, Partnership or Trust, please provide
the additional information requested. 

  

	 	 ̈	Individual. 

  

	 	 ̈	Joint Tenants with Right of Survivorship (Both signatures must appear on page 5). 

  

	 	 ̈	Corporation, Limited Liability Company or Partnership (Corporate Resolutions, Operating Agreement or Partnership Agreement must be enclosed). 

  

	 	 ̈	Trust. 

  

	 	  	Trustee’s Name:
                                        
                         Trust Date:
                     

  

	 	 ̈	Other: Provide detailed information in the space immediately below. 

  

	 	  	                                      
                                        
                                        
                   

  

	 	  	                                      
                                        
                                        
                   

  

	 	  	                                      
                                        
                                        
                   

  

	 	2.	SUBSCRIBER’S TAXPAYER INFORMATION. Check the appropriate box if you are a non-resident alien, a U.S. citizen residing outside the United States or subject to backup
withholding. Trusts should provide their taxpayer identification number. Custodians should provide the minor’s Social Security Number. All individual subscribers should provide their Social Security Number. Other entities should provide their
taxpayer identification number. 

  

	 	 ̈	Check this box if you are non-resident alien. 

  

	 	 ̈	Check this box if you are U.S. citizen residing outside of the United States. 

  

	 	 ̈	Check this box if you are subject to back-up withholding. 

  

 2 

			
	          Subscriber’s Social Security Number:
	 	  
		
	          Joint Subscriber’s Social Security Number:
	 	  
		
	          Taxpayer Identification Number:
	 	  

  

	 	3.	MEMBER REPORT ADDRESS. If you would like duplicate copies of member reports sent to an address that is different than the address identified in Section A on Page 1, please
complete this section. 

  

	 	  	Address: 

  

					
	 Street
	 	  	 	
			
	City, State, Zip Code:	 	  	 	

  

	 	4.	STATE OF RESIDENCE. 

  

							
		 	 State of Principal Residence:
	  	  	 	
				
		 	 State where driver’s license is issued:
	  	  	 	
				
		 	 State where resident income taxes are filed:
	  	  	 	
		
		 	State(s) in which you have maintained your principal residence during the past three (3) years:

  

											
	 a.
	 	  	  	b.	  	  	  	c.	  	  

  

	 	5.	SUBSCRIBER’S REPRESENTATIONS, WARRANTIES AND COVENANTS. You must read and certify your representations and warranties and sign and date this Subscription Agreement.

 By signing below the subscriber represents and warrants to Liberty that he, she or it: 
  

	 	a.	has received a copy of Liberty’s Prospectus and the exhibits thereto; 

  

	 	b.	has been informed that the units of Liberty are offered and sold in reliance upon a federal securities registration, state securities registration in certain states and securities
registration exemptions in various states, and understands that the units to be issued pursuant to this Subscription Agreement can only be sold to a person meeting requirements of suitability; 

  

	 	c.	has been informed that the securities purchased pursuant to this Subscription Agreement have not been registered under the securities laws of any state other than as described
herein and that Liberty is relying in part upon the representations of the undersigned Subscriber contained herein; 

  

	 	d.	has been informed that the securities subscribed for have not been approved or disapproved by any regulatory authority, nor has any regulatory authority passed upon the accuracy or
adequacy of the Prospectus; 

  

	 	e.	intends to acquire the units for his/her/its own account without a view to public distribution or resale and that he/she/it has no contract, undertaking, agreement or arrangement to
sell or otherwise transfer or dispose of any units or any portion thereof to any other person; 

  

	 	f.	understands that there is no present market for Liberty’s membership units, that the membership units will not trade on an exchange or automatic quotation system, that no such
market is expected to develop in the future and that there are significant restrictions to the transferability of the membership units; 

  

	 	g.	has been encouraged to rely upon the advice of his legal counsel and accountants or other financial advisers with respect to the tax and other considerations relating to the
purchase of units; 

  

	 	h.	has received a copy of the Liberty Company Agreement and understands that acceptance upon financial closing, the subscriber and the membership units subscriber purchases will be
bound by the provisions of the Company Agreement which contains, among other things, provisions that restrict the transfer of membership units; 

  

 3 

	 	i.	understands that the units are subject to substantial restrictions on transfer under state securities laws along with restrictions in the Liberty Company Agreement and agrees that
if the membership units or any part thereof are sold or distributed in the future, the subscriber shall only sell or distribute them pursuant to the terms of Liberty’s Company Agreement, the requirements of the Securities Act of 1933, as
amended, and applicable state securities laws; 

  

	 	j.	is capable of bearing the economic risk of this investment, including the possible total loss of the investment; 

  

	 	k.	understands that Liberty will place a restrictive legend on any certificate representing any unit containing substantially the following language as the same may be amended by the
Managers of Liberty in their sole discretion: 

 THE TRANSFERABILITY OF THE UNITS REPRESENTED BY THIS CERTIFICATE IS
RESTRICTED. SUCH UNITS MAY NOT BE SOLD, ASSIGNED, OR TRANSFERRED, NOR WILL ANY ASSIGNEE, VENDEE, TRANSFEREE, OR ENDORSEE THEREOF BE RECOGNIZED AS HAVING ACQUIRED ANY SUCH UNITS FOR ANY PURPOSES, UNLESS AND TO THE EXTENT SUCH SALE, TRANSFER,
HYPOTHECATION, OR ASSIGNMENT IS PERMITTED BY, AND IS COMPLETED IN STRICT ACCORDANCE WITH, APPLICABLE STATE AND FEDERAL LAW AND THE TERMS AND CONDITIONS SET FORTH IN LIBERTY’S COMPANY AGREEMENT AS AGREED TO BY EACH MEMBER. 
 THE UNITS REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED, OR OTHERWISE
TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT OR AN OPINION OF COUNSEL, SATISFACTORY TO THE COMPANY AND ITS COUNSEL, THAT SUCH REGISTRATION IS NOT REQUIRED. 
  

	 	l.	understands that to enforce the above legend, Liberty may place a stop transfer order with its registrar and stock transfer agent (if any) covering all certificates representing any
of the membership units; 

  

	 	m.	has knowledge and experience in business and financial matters as to be able to evaluate the merits and risks of an investment in the units, believes that the investment in units is
suitable for the subscriber and can bear the economic risk of the purchase of units including the total loss of the undersigned’s investment; 

  

	 	n.	may not transfer or assign this Subscription Agreement, or any of the subscriber’s interest herein; 

  

	 	o.	has written his, her, or its correct taxpayer identification number under Item 3 on this Subscription Agreement; and 

  

	 	p.	is not subject to back-up withholding either because he, she or it has not been notified by the Internal Revenue Services (“IRS”) that he, she or it is subject to
back-up withholding as a result of a failure to report all interest or dividends, or the IRS has notified him, her or it that he, she or it is no longer subject to back-up withholding (Note this clause (p) should be crossed out if the back-up
withholding box in Item 2 is checked. 

  

	 	6.	TENNESSEE RESIDENTS ONLY. Check the appropriate box (one only) to indicate the your qualification to purchase in this offering: 

  

	 	 ̈	Net worth exclusive of your home, home furnishings and automobiles of at least $250,000 and gross income during the last tax year of at least $65,000 with an expectation of at least
$65,000 in gross income during the current tax year; or 

  

	 	 ̈	Net worth exclusive of your home, home furnishings and automobiles of at least $500,000 

 [Remainder of page intentionally left blank] 
  

 4 

 SIGNATURE OF SUBSCRIBER/JOINT SUBSCRIBER: 
  

					
	DATE:                     	  		  	
			
	  
	  		  	  

	INDIVIDUALS:	  		  	ENTITIES:
			
	  
	  		  	  

	Name of Individual Subscriber (Please Print)	  		  	Name of Entity (Please Print)
			
	  
	  		  	  

	Signature of Individual	  		  	Print Name and Title
			
	  
	  		  	  

	Name of Joint Individual Subscriber (Please Print)	  		  	Signature of Officer
			
	  
	  		  	
	Signature of Joint Individual	  		  	

 ACCEPTANCE OF SUBSCRIPTION BY LIBERTY RENEWABLE FUELS LLC: 
  

					
	Liberty Renewable Fuels LLC hereby accepts the subscription for the above Units.
		
	Dated this      day of                     ,
200    .	 	
		
	LIBERTY RENEWABLE FUELS LLC	 	
			
	By:	 	  
	 	
			
	Its:	 	  
	 	

  

 5 

 EXHIBIT A  
 MEMBER SIGNATURE PAGE 
 ADDENDA TO THE COMPANY AGREEMENT OF LIBERTY RENEWABLE FUELS LLC

 The undersigned does hereby represent and warrant that the undersigned, as a condition to becoming a Member in Liberty Renewable Fuels LLC, has
received a copy of the Company Agreement, and, if applicable, all amendments and modifications thereto, and does hereby agree that the undersigned, along with the other parties to the Company Agreement, shall be subject to and comply with all terms
and conditions of said Company Agreement in all respects as if the undersigned had executed said Company Agreement on the original date thereof and that the undersigned is and shall be bound by all of the provisions of said Company Agreement from
and after the date of execution hereof. 
  

					
	DATE:                     	  		  	
			
	  
	  		  	  

	INDIVIDUALS:	  		  	ENTITIES:
			
	  
	  		  	  

	Name of Individual Subscriber (Please Print)	  		  	Name of Entity (Please Print)
			
	  
	  		  	  

	Signature of Individual	  		  	Print Name and Title
			
	  
	  		  	  

	Name of Joint Individual Subscriber (Please Print)	  		  	Signature of Officer
			
	  
	  		  	
	Signature of Joint Individual	  		  	

 AGREED AND ACCEPTED ON BEHALF OF THE COMPANY AND ITS MEMBERS: 
  

			
	LIBERTY RENEWABLE FUELS LLC
		
	By:	 	  

		
	Its:	 	  

  

 6

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