Document:

Amendment No. 2 to Promissory Note

 Exhibit 10.1 
 AMENDMENT NO. 2 TO PROMISSORY NOTE 
 THIS AMENDMENT
NO. 2 TO PROMISSORY NOTE (this “Amendment”) is made and entered into as of June 12, 2007, by and between CELUNOL CORP.,
a Delaware corporation (the “Company”) and DIVERSA CORPORATION, a Delaware corporation (“Holder”). 
 WHEREAS, the Company has executed and delivered to Holder that certain Promissory Note dated as of February 12,
2007 wherein the Company has promised to pay to Holder up to an aggregate principal amount of twenty million dollars ($20,000,000) subject to the terms and conditions set forth in such Promissory Note (as amended, the
“Note”); and 
 WHEREAS, the Company and Holder each desire to amend the Note in accordance
with paragraph 12 of the Note. 
 NOW, THEREFORE, in consideration of the foregoing premises and the
mutual covenants and conditions set forth below, and for other good and valuable consideration, the receipt of which is hereby acknowledged, the parties to this Amendment hereby agree as follows: 
 AMENDMENT 
 1. Amendment of the
Note. 
 1.1 The header of the Note is hereby amended and restated such that the “Maximum aggregate principle amount” is
stated as “$27,500,000”. 
 1.2 The first sentence of the introductory paragraph of the Note is hereby amended and restated
to read as follows: 
 “For value received Celunol Corp., a Delaware corporation (the
“Company”), promises to pay to Diversa Corporation, a Delaware corporation, or its assigns (“Holder”) up to an aggregate principal amount of twenty-seven million five hundred thousand dollars
($27,500,000), subject to the provisions of paragraph 2 below.” 
 1.3 Paragraph 2 of the Note is hereby amended and restated in
its entirety to read as follows: 
 “2. Borrowing Requests. Each time prior to the Maturity Date that the Company
desires to borrow available amounts under this Note, the Company shall deliver to Holder a written borrowing request that (i) specifies the amount of the borrowing requested under this Note, (ii) indicates that it is a request pursuant to
this Note, and (iii) is executed by an authorized officer of the Company (a “Borrowing Request”). Holder shall only be obligated to loan amounts to the Company under this Note prior to the termination of the Merger
Agreement and in an aggregate principal amount of up to twenty-seven million five hundred thousand dollars ($27,500,000). Subject to the foregoing, each time the Company delivers a Borrowing Request to Holder, Holder shall endorse Schedule A
of this Note to reflect the amount of such Borrowing Request, attach the applicable Borrowing Request to Schedule A of this Note, and deliver to the 

  

 1. 

 
Company within three (3) business days of the date of receipt of the applicable Borrowing Request the amount requested in such Borrowing Request. The
principal amount payable by the Company to Holder on the Maturity Date shall equal the applicable principal amount (the “Maturity Date Principal Amount”) set forth on Schedule A hereto at the Maturity
Date. If at any time the Company desires to borrow funds from any Person in excess of the total of twenty-seven million five hundred thousand dollars ($27,500,000) in principal amount provided for pursuant to this Note and the Company has at such
time already borrowed the total of twenty-seven million five hundred thousand dollars ($27,500,000) in principal amount provided for pursuant to this Note, the Company hereby agrees that Holder shall have the right to fund such additional amounts
prior to the Company borrowing such funds from any other party. If the Company desires to pursue such borrowing, it will provide Holder notice of the proposed borrowing and the proposed terms and if Holder does not indicate within ten
(10) business days that it is willing to lend on such terms, the Company shall be free to obtain financing from a third party on terms that are no less favorable to the Company than such proposed terms (any such third party financing, a
“Third Party Loan”).” 
 2. No Other Amendment. Except as amended by this Amendment, the Note shall remain in full force
and effect without any modification. By executing and acknowledging, respectively, this Amendment below, the Company and Holder, respectively, each certify that this Amendment has been executed and delivered in compliance with the terms of paragraph
12 of the Note. 
 3. Governing Law. This Amendment shall be governed by and construed under the laws of the State of New York, without giving effect
to any conflicts of laws principles that would result in the application of the laws of another jurisdiction. 
 4. Effect of Amendment. In the event
of a conflict between this Amendment and the Note, this Amendment shall govern. 
 5. Severability. If any term or provision of this Amendment is held
by a court of competent jurisdiction or other authority to be invalid, void or unenforceable, the remainder of the terms and provisions of this Amendment shall remain in full force and effect. 
 6. Counterparts. This Amendment may be executed in several counterparts, each of which shall constitute an original and all of which, when taken together, shall
constitute one agreement. 
 [REMAINER OF PAGE INTENTIONALLY LEFT BLANK] 
  

 2. 

 The parties hereto have caused this Amendment to be executed and delivered as of the date first set forth
above. 
  

			
	CELUNOL CORP.,
	  a Delaware corporation
		
	By:	 	 /s/ John A. McCarthy, Jr.

	Name:	 	 John A. McCarthy, Jr.

	Title:	 	 EVP & CFO

  

			
	ACKNOWLEDGED AND AGREED:
	
	 DIVERSA CORPORATION,
   a Delaware corporation

		
	 By:
	 	 /s/ Anthony E. Altig

	 Name:
	 	 Anthony E. Altig

	 Title:
	 	 SVP & CFO

 [SIGNATURE PAGE TO AMENDMENT
NO. 2 TO PROMISSORY NOTE]Summary of Executive Compensation

 Exhibit 10.19 
 Summary of Executive Officer Compensation 
 The following named executive officers of ABIOMED, Inc.
are at will employees of ABIOMED and have not entered into a formal employment agreement with ABIOMED. The current understanding between each employee and ABIOMED with respect to the employee’s compensation is as follows: 
  

									
	 Name
	  	Base salary	  	Bonus target
for fiscal
2008
	 Dr. Karim Benali
	  	$	  174,624	  		  	$	75,000
	 Andrew Greenfield
	  	$	163,710	  		  	$	50,000
	 Christopher D. Macdonald
	  	$	199,614	  		  	$	100,000

 These officers are also eligible to receive grants of stock options and other awards at the discretion of
ABIOMED’s Compensation Committee. 
 We have an employment agreement with our Chief Executive Officer, Michael R. Minogue, that sets
forth the terms of his employment. Mr. Minogue’s current salary is $351,900 and his target bonus for fiscal 2008 is $351,900. We have an offer letter with our Chief Financial Officer, Daniel J. Sutherby, that sets forth the terms of his
employment. Mr. Sutherby’s current salary is $229,500 and his target bonus for fiscal 2008 is $100,000.Summary of Director Compensation

 Exhibit 10.20 
 Summary of Director Compensation 
 Directors of ABIOMED who are not our employees receive an annual
retainer of $15,000 or an equivalent value of our Common Stock, at the individual’s option, and $1,200 for attendance at in-person meetings of our Board of Directors, $1,000 for attendance at meetings of Committees of our Board of Directors and
$600 for attendance at all telephonic meetings. The Chair of our Audit Committee receives $1,500 for attendance at meetings of our Audit Committee. In addition, our Lead Director, receives additional compensation of $20,000. 
 These directors are also eligible to receive stock options and other awards under our stock incentive plans. It is currently our policy to grant
each non-employee director who continues to be a director following our annual meeting of stockholders, a stock option to purchase 8,000 shares of our common stock, with an exercise price of the fair market value of our common stock on the date of
grant, and vesting in full one year after the date of grant. It is also currently our policy to grant a stock option to purchase 25,000 shares of our common stock upon the appointment of new non-employee directors, with an exercise price of the fair
market value of our common stock on the date of grant, and vesting annually over five years. 
 Our directors are also eligible for
additional compensation in the event that they perform additional services for ABIOMED in excess of the normal time commitments we expect of our directors.Employment Agreement - Christopher J. Moreton

 Exhibit 10.1 
 [PNA GROUP LETTERHEAD] 
 PRIVATE & CONFIDENTIAL 
 September 12, 2006 
 Christopher J. Moreton 
 PNA Group, Inc. 
 400 Northridge Road, Suite 850 
 Atlanta, Georgia 30350 
 Dear Chris: 
 Reference is made to the letter agreement dated February __, 2004 from Preussag North America, Inc. to you, as amended by the letter dated
January 24, 2006 from PNA Group, Inc. to you (collectively, the “Agreement”). 
 Section 2(C) of the Agreement is
hereby amended by extending the initial term of your employment for an additional six month period, though June 30, 2009. 
 Except as
specifically modified hereby, the Agreement is in all respects confirmed, ratified and approved. 
 Please sign both copies of this letter
below, retain one for your records and return the other to the undersigned using the Federal Express Airbill that is enclosed. 
  

	
	Very truly yours,
	
	PNA GROUP, INC.
	
	/s/ Eva M. Kalawski
	 Eva M. Kalawski
 Vice President and
Secretary

  

					
	AGREED AND ACCEPTED:	 		 	
			
	/s/ Christopher J. Moreton	 		 	Date: 9/18/06
	Christopher J. Moreton	 		 	

 [PNA GROUP LETTERHEAD] 
 Mr. C J Moreton 
 PNA Group 
 400
Northridge Road 
 Suite 850 
 Atlanta, GA 30350 USA 

24 January 2006 
 Dear Chris, 
 I am pleased to advise you that pursuant to Clause 3(B) of your contract your basic salary has been revised to US$ 275,000 with effect from 1 January 2006.

  

	
	Yours sincerely,
	
	/s/ V H Sher
	 V H Sher
 President
 PNA Group Inc

 [PNA GROUP LETTERHEAD] 
 PNA GROUP INC 
 DIRECTORS’ COMMITTEE 
 SALARY REVIEW - C J MORETON 
 Review Due December 2005, Effective 1 January 2006 
 Under Clause 3(B) of Chris Moreton’s contract of Employment, his salary is due for review with effect from the 1 January 2006. 
 Since the end of 2003 (when Chris’ salary was last set) the market for persons occupying a similar position to Chris has moved ahead fairly firmly. From the 2004
accounts of three public companies who are competitors we can see that the basic salaries of the CFO’s for that year were in the range of US$ 295,000 to US$ 314,000 an average of US$ 303,000 compared to an average of US$ 234,000 in
2002. 
 Chris has performed well in his role and after making due allowance for the level of Directors Fees paid to Chris (US$ 34,500) it is proposed that
his basic salary be increased from US$ 225,000 to US$ 275,000 with effect from 1 January 2006. 
 Approved in writing on 24 January 2006.

  

					
	/s/ Mr. r Feuerhake	 		 	/s/ Mr. V H Sher
	Mr. r Feuerhake	 		 	Mr. V H Sher

 PRIVATE & CONFIDENTIAL 
 February __, 2004 
 Chris J. Moreton 
 505 Water Shadow Lane 
 Alpharetta, GA 30022 
 Dear
Chris: 
 We are pleased to extend to you an offer to continue your employment with Preussag North America, Inc. and PNA Group, Inc. (referred to herein
collectively as “PNA” or the “Company”) as its Chief Financial Officer. This letter sets forth your duties and responsibilities, compensation, benefits, and other terms of employment. 
  

	1.	Position of Employment 

 Your position with
the Company will be Chief Financial Officer. You will report to the President of PNA. 
  

	2.	Duties and Responsibilities 

  

	A)	Your responsibilities will include those normally associated with a Chief Financial Officer, including, among other things: 

 Providing Consolidated Financial information on actual and budgeted performance to the President of PNA in a form suitable to enable him to effectively
manage the business. 
 Manage PNA’s relationships with its banks in the U.S., negotiate the general terms of borrowing facilities and
revise/amend when necessary. 
 Supervise the cash management system for PNA and its subsidiaries. 
 Maintain relations with auditors and negotiate audit fees. Prepare annual Consolidated Financial Statements in accordance with US GAAP for audit.

 Supervise Tax Manager and ensure Federal and State Tax returns are submitted on a timely basis and the Corporation maximizes its use of
Federal Net Operating Losses. 
 Prepare reports for the PNA Board on the performance of PNA and its subsidiaries and other matters when
necessary. 

 Review work of subsidiary Financial Controllers and advise President of necessary action to maintain
satisfactory control standards 
  

	B)	At the discretion of the appropriate Boards of Directors, you will also serve as a Director of the operating subsidiary companies and of PNA and will be paid directors fees for
services rendered in addition to the compensation referred to in Paragraph 3 below. 

  

	C)	The initial term of your employment by the Company shall be for a period of five (5) years commencing on January 1st, 2004 and extending through December 31st, 2008.
This initial term and agreement will automatically extend in successive twelve (12) month increments subject to earlier termination as hereinafter provided. 

  

	3.	Compensation 

  

	A)	You shall receive an annual base salary of US$ TWO HUNDRED AND TWENTY FIVE THOUSAND ($225,000) to be paid in equal monthly installments. 

  

	B)	Your base salary will be reviewed in December 2005, and then annually thereafter. 

  

	C)	You will also be entitled to receive an annual performance-based bonus to be determined by the President of PNA, and approved by the Board. 

  

	4.	Benefits 

 You will be entitled to
participate in the Company’s employee benefit programs that are applicable to its management, including, but not limited to those set forth below and in the attached description of benefits: 
  

	A)	Life, Disability, Medical, and Dental Insurance. You will receive a comprehensive insurance benefits package including group life insurance, short and long-term disability
insurance, and medical and dental insurance. 

  

	B)	Retirement Programs. You shall be eligible to participate in the Company’s 401(k) plan as well as any deferred compensation or supplemental retirement program offered by
the Company immediately upon the commencement of your employment term. You shall receive a credit against the plan’s vesting period for all of your years of employment with the TUI Group. 

  

	C)	 Vacation. You shall be entitled to seven (7) weeks of paid vacation per year, of which no more than two weeks may be taken at any one time 

  

 Page 2 

	 	 
without prior approval, and shall be entitled to carry over any vacation which was unused or unpaid during any year up to fifteen (15) days unless
otherwise approved in writing by the President, in respect of service with PNA. 

  

	D)	Relocation Costs. You shall be assigned to the Company’s offices in Atlanta, Georgia. In the event of the Company requiring you to relocate, the Company shall reimburse
you for all reasonable costs associated with your relocation, including disposing of your current home, househunting trips, acquiring a new home, and relocating your personnel possessions and household goods. These relocation benefits will be
“grossed up” to protect you from any tax liability you may incur as a result. 

  

	E)	Professional Costs. The Company will pay the fees, dues, costs and other expenses associated with maintaining or renewing your membership of The Institute of Chartered
Accountants in England and Wales. 

  

	F)	Automobile. The Company will provide you with an automobile to be used in the interest of the Company’s business. You may also use the automobile for private purposes.
You shall bear the tax, if any, for this personal use. The automobile shall be selected in accordance with the Company’s guidelines and appropriate for your position as agreed by the President of PNA. The Company shall reimburse you in
accordance with its policies for all reasonable expenses incurred with the operation and maintenance of the automobile. 

  

	G)	Return Air Fares. The Company will pay for business class return air fares to Europe for you and your spouse once per annum. You are encouraged to combine such trip with
business but are not compelled to do so. 

  

	5.	Duration of Employment and Severance 

  

	A)	The Company may, at any time, terminate or discontinue your employment upon ninety (90) days written notice. Upon such notice, if the termination is for any reason other than
cause (i.e. gross and willful negligence of duties, malfeasance or substance abuse that causes interference in any way with your performance of your duties), you shall be entitled to a continuation of your salary, bonuses, incentives and other
benefits for the following period: (i) from the date of your termination or discontinuation until the expiration of the then current term of your employment, or (ii) twelve (12) months from the date of your termination or
discontinuation, whichever is greater. 

  

 Page 3 

	6.	Other Provisions 

  

	A)	Reference to the employee herein shall include legal representatives and beneficiaries in the event of employee’s death. 

  

	B)	Reference to the Company shall include Preussag North America, Inc., PNA Group, Inc. and their successors, if any. 

  

	C)	This agreement supersedes any and all prior agreements, understandings, negotiations, or discussions concerning your continued employment with the Company. 

Chris, we very much look forward to working with you to continue to develop and enhance the business and activities of Preussag North America, Inc. 
  

	
	Sincerely,
	
	PREUSSAG NORTH AMERICA, INC.
	
	/s/ V. H. Sher
	 V. H. Sher
 President

  

					
	AGREED AND ACCEPTED	 		 	
			
	/s/ C. J. Moreton	 		 	Date: 3/5/04
		 		 	

  

 Page 4 

 Chris J. Moreton 
 Description of Benefits 
 This is to confirm that the employment benefits offered by Preussag North America, Inc. to you as of the date
hereof are as follows: 
  

	1.	Life Insurance. Term life insurance for the period of employment is provided with a face amount of $1 million. Premiums are paid 100% by the Company.

 Employees are eligible to purchase additional coverage for themselves and their dependents. 
  

	2.	Disability. The Company provides long-term disability insurance to cover 60% of an employee’s base salary. 

  

	3.	Medical and Dental Insurance. Medical and dental insurance is provided to the employees and their dependents. Premiums are paid 100% by the Company. Employees are responsible
for co-pays and deductibles. 

  

	4.	401(k) Retirement Plan. PNA pays up to a 5% match of the employee’s contribution. There is a maximum Company contribution as may be established from time to time by the
Internal Revenue Service. The vesting period for Company contributions is 5 years. 

  

	5.	Deferred Compensation Plan. The Company shall contribute an amount equal to ten percent (10%) of employee’s base salary to a non-qualified deferred compensation
plan. 

  

 Page 5

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