Document:

Second Amendment to the Ingersoll-Rand Company Estate Enhancement Program

 Exhibit 10.26 
 SECOND AMENDMENT 
 TO THE INGERSOLL-RAND COMPANY 
 ESTATE ENHANCEMENT PROGRAM 
 WHEREAS, Ingersoll-Rand Company, a New Jersey corporation, adopted the Ingersoll-Rand Company Estate Enhancement Program (the “Plan”) which was originally effective on September 2, 1997, and subsequently amended and
restated effective 1998; and 
 WHEREAS, effective July 1, 2009, a corporate reorganization was effected pursuant to arrangements
under Bermuda law which will result in a new parent company, Ingersoll-Rand plc (“IR plc”) (“Irish Reorganization”); and 
 WHEREAS, Ingersoll-Rand Company preserved the right at any time and from time to time to amend the Plan in accordance with Section 16.01 of the Plan; and 
 WHEREAS, Ingersoll-Rand Company desires to amend the Plan to reflect that the Irish Reorganization shall not be deemed a “Change in
Control” for purposes of the Plan and that on and after the effective date of the Irish Reorganization, a “Change in Control” shall refer solely to Ingersoll-Rand plc. 
 NOW THEREFORE, the Plan is hereby amended, effective July 1, 2009, as set forth below: 
 1. Section 2.05 of the Plan, “Change in Control”, is hereby amended by adding the following to the end thereof: 
 “Further notwithstanding the foregoing provisions of this Section 2.05, or any other provision in this Plan or the
Company’s Incentive Stock Plans of 1995 and 1998, as amended, or the Ingersoll-Rand Company Limited Incentive Stock Plan of 2007, none of the transactions contemplated by the Irish Reorganization that are undertaken by (i) Ingersoll-Rand
Company Limited or its affiliates prior to, or as of, the effective date of the Irish Reorganization or (ii) Ingersoll-Rand plc or its affiliates on and after the effective date of the Irish Reorganization shall trigger, constitute or be deemed
a ‘Change in Control.’ On and after the effective date of the Irish Reorganization, the term ‘Change in Control’ shall refer solely to a ‘Change in Control’ of Ingersoll-Rand plc.” 
 2. Except as specifically set forth herein, all other terms of the Plan shall remain in full force and effective and are hereby ratified in all respects.

  

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 IN WITNESS WHEREOF, the Company has had its duly authorized representative sign
this Amendment as of July 1, 2009 
  

			
	INGERSOLL-RAND COMPANY
		
	By:	 	/s/ Barbara A. Santoro
	Name:	 	Barbara A. Santoro
	Title:	 	Vice President & Secretary

  

 2Form of Amended and Restated Change of Control Agreement

 EXHIBIT 10.1 
 MAXYGEN, INC. 
 AMENDED AND RESTATED
CHANGE OF CONTROL AGREEMENT 
 This CHANGE
OF CONTROL AGREEMENT (the “Agreement”), originally made by and between MAXYGEN, INC., a Delaware corporation (the “Company”),
and [                                ] (the “Executive”) on
[            ], as amended and restated May 7, 2008 and December     , 2008 (the “Prior Agreement”), is hereby amended and restated in its entirety as set
forth below. 
 WHEREAS, the Company is concurrently with the execution of this Agreement entering into
a Master Joint Venture Agreement with Haley Pharma Inc. and Comet Private Company (the “Transaction”), the closing of which Transaction (the “Closing”) will constitute a Change in Control for purposes of this Agreement (as
amended and restated); 
 WHEREAS, the Executive’s employment with the Company will terminate following the
Executive’s provision of services for a specified period following the Closing; 
 WHEREAS, over
the past several years, the Executive has foregone other employment opportunities and assisted in successfully implementing the Company’s strategic direction, as periodically revised; 
 WHEREAS, the Board has determined that appropriate steps should be taken to reward the Executive for successfully
discharging his duties in assisting with implementing the Company’s strategic direction, as periodically revised, recognizing that implementing other Company strategies would have likely resulted in benefits under this Agreement being
triggered, and to reinforce and encourage the continued attention and dedication of the Executive to his assigned duties following the consummation of the Closing. 
 NOW, THEREFORE, in consideration of the premises and the mutual covenants herein contained, the Company and the Executive agree as follows: 
 1. Introduction; Purposes and Effectiveness. 

 (a) The purpose of this Agreement is to provide the Executive with certain benefits due to the
termination of his or her employment with the Company in connection with a Change of Control of the Company. 
 (b) The Company, by means of
the Agreement, seeks to (i) retain the services of the Executive, (ii) reward the Executive for the successful discharge of his duties, and (iii) provide incentives for the Executive to exert maximum efforts for the success of the
Company during a transition period following the Closing. 
 (c) This Agreement, which shall be binding immediately upon its execution by the
parties, shall go into effect if and only if the Closing occurs on or prior to December 31, 2009. The date of the Closing shall be the “Effective Date” of this Agreement and, upon this Agreement becoming effective at the Closing, the
Prior Agreement shall terminate. Prior to the Effective Date of this Agreement, as well as following termination of this Agreement without its having become effective as set forth in this paragraph, the Prior Agreement shall remain in full force and
effect. 
 2. Definitions. 
 (a) “Agreement” means this Amended and Restated Change of Control Agreement. 
 (b) “Board” means the Board of
Directors of the Company. 
 (c) “Cause” means the Executive’s: (i) willful and continued failure to substantially
perform the Executive’s duties with the Company (other than as a result of physical or mental disability or death) after a written demand for substantial performance is delivered to the Executive by the Company, which demand specifically
identifies the manner in which the Company believes that the Executive has not substantially performed the Executive’s duties and that has not been cured within fifteen (15) days following receipt by the Executive of the written demand;
(ii) commission of a felony (other than a traffic-related offense) that in the written determination of the Company is likely to cause or has caused material injury to the Company’s business; (iii) dishonesty with respect to a
significant matter relating to the Company’s business; or (iv) material breach of any agreement by and between the Executive and the Company, which material breach has not been cured within fifteen (15) days following receipt by the
Executive of written notice from the Company identifying such material breach. 
 (d) “Change of Control” means: (i) a
dissolution or liquidation of the Company; (ii) a sale of all or substantially all the assets of the Company; (iii) a merger, recapitalization, reorganization, consolidation or other similar transaction (a “Business 

  

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Combination”) in which beneficial ownership of securities of the Company representing at least thirty-five percent (35%) of the combined voting
power entitled to vote in the election of directors has changed; (iv) a reverse merger in which the Company is the surviving corporation but the shares of the common stock of the Company outstanding immediately before the merger are converted
by virtue of the merger into other property, whether in the form of securities, cash or otherwise, and in which beneficial ownership of securities of the Company representing at least thirty-five percent (35%) of the combined voting power
entitled to vote in the election of directors has changed; (v) an acquisition by any person, entity or group within the meaning of Section 13(d) or 14(d) of the Exchange Act, or any comparable successor provisions (excluding any employee
benefit plan, or related trust, sponsored or maintained by the Company or subsidiary of the Company or other entity controlled by the Company) of the beneficial ownership (within the meaning of Rule 13d-3 promulgated under the Exchange Act, or
comparable successor rule) of securities of the Company representing at least thirty-five percent (35%) of the combined voting power entitled to vote in the election of directors; (vi) in the event that the individuals who are members of
the Incumbent Board cease for any reason to constitute at least fifty percent (50%) of the Board; (vii) a sale of substantially all the assets of the Company’s protein pharmaceutical business; (viii) the consummation by the
Company of a Business Combination with respect to which all or substantially all of the individuals and entities who were the beneficial owners of the combined voting power of the then outstanding securities of the Company entitled to vote generally
in the election of directors immediately prior to such Business Combination do not, following consummation of all transactions intended to constitute part of such Business Combination, beneficially own, directly or indirectly, at least sixty-five
percent (65%) of the voting securities of the Company (or the corporation, business trust or other entity resulting from or being the surviving entity in such Business Combination); or (ix) the Closing. 
 (e) “Code” means the Internal Revenue Code of 1986, as amended. 
 (f) “Company” means Maxygen, Inc., a Delaware corporation. 
 (g) “Confidential Information,
Secrecy and Invention Agreement” has the meaning given thereto in Section 7(b). 
 (h) “Consulting Agreement” has the
meaning given thereto in Section 4. 
 (i) “Disability” means the Executive (i) is unable to engage in any substantial
gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or can be expected to last for a continuous period of not less than twelve (12) months, or (ii) is, by reason
of any medically determinable physical or mental impairment which can be expected to last for a continuous period of not less than twelve (12) months, receiving income replacement benefits for a period of not less than three (3) months
under an accident and health plan covering Company employees. 
  

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 (j) “Effective Date” means the date specified in Section 1(c) above. 
 (k) “Exchange Act” means the Securities Exchange Act of 1934, as amended. 
 (l) “Executive” means the person identified in the introductory paragraph of this Agreement. 
 (m) “Good Reason” means: (i) a reduction by the Company in the base salary of the Executive, or of twenty-five percent (25%) or more
in the Target Bonus opportunity of such Executive, as in effect immediately before such reduction, except if agreed to in writing by the Executive; (iii) the relocation of the Executive to a facility or a location more than thirty
(30) miles from the Executive’s then present business location, except if agreed to in writing by the Executive; (iv) a material breach by the Company of any provision of this Agreement or (v) any failure of the Company to obtain
the assumption of this Agreement by any successor or assign of the Company; provided, however, that such events shall not constitute grounds for a Good Reason termination unless the Executive has provided notice to the Company of the existence of
the one or more of the above conditions within ninety (90) days of its initial existence and the Company has been provided at least thirty (30) days to remedy the condition. 
 (n) “Incumbent Board” means the individuals who, as of the Effective Date, are members of the Board. If the election, or nomination for
election by the Company’s stockholders, of any new director is approved by a vote of at least fifty percent (50%) of the Incumbent Board, such new director shall be considered as a member of the Incumbent Board 
 (o) “Non-Competition and Non-Solicitation Agreement” has the meaning given thereto in Section 7(d). 
 (p) “Target Bonus” means the Executive’s target bonus for the fiscal year ending on or about December 31, 2009, as set by the Board
or the appropriate committee thereof. 
 3. Transition Period. The Executive’s employment with the Company will terminate
effective on the date six months following the Closing (the “Six Month Anniversary”), or such shorter period as is designated in writing by the Company’s Board of Directors (the date on which the Executive’s employment actually
terminates is 

  

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referred to as the “Termination Date”). The Termination Date shall constitute a “separation from service” with the meaning of Code
Section 409A (as defined in Section 12(a)). During the period commencing with the Effective Date of this Agreement and ending on the Termination Date, the Executive will use his best efforts to fulfill his duties and responsibilities as
[TITLE], and to assist in the implementation of the Transaction as directed by the Company’s Board of Directors. 
 4. Consulting
Duties. The Executive agrees to enter into a consulting agreement in the form attached as Exhibit A (the “Consulting Agreement”) with the Company, covering the Executive’s performance of services following the Termination
Date. 
 5. Retention Benefits. 
 (a) If (x) prior to the Six Month Anniversary the Executive’s employment terminates as a result of (A) his death or Disability, (B) the Company’s terminating his employment other than for Cause, or (C) the
Executive’s terminating his employment with the Company voluntarily with Good Reason, or (y) the Executive remains employed by the Company through the Six Month Anniversary, then in each case, subject to Sections 7 and 12: (i) the
Executive shall be entitled to receive, on the first payroll date that occurs on or after the date that is six (6) months and one (1) day after the Termination Date (or, if sooner, upon the Executive’s death), a lump sum payment equal
to $                     [Insert 3x base salary] (ii) each of the Executive’s outstanding stock options, all stock subject to
repurchase or forfeiture, including without limitation, restricted stock, restricted stock units and performance shares awards, and any options, stock subject to repurchase or forfeiture, awards or purchases held in the name of an estate planning
vehicle for the benefit of the Executive or his or her immediate family, shall have their vesting and exercisability schedule accelerate in full (or, as applicable, the corresponding repurchase or forfeiture right shall lapse in full) as of the
Termination Date, provided that the Company shall deliver shares (or other property including cash that is in the interim substituted for or distributed with respect to shares of the Company’s Common Stock, with any such property or cash
related to shares underlying vested but as-yet-unsettled restricted stock units held by the Company or an agent authorized by the Company for delivery to the Executive) in satisfaction of the accelerated vesting of restricted stock units on the
earlier of (A) the date that is six (6) months and one (1) day after the Termination Date (or, if sooner, upon the Executive’s death), or (B) the originally scheduled vesting date, (iii) if on the Termination Date the
Executive is covered by any Company-paid group health, dental or vision plans or programs, then subject to the Executive timely electing continued group health coverage under Title X of the Consolidated Omnibus Budget Reconciliation Act of 1985, as
amended (“COBRA”), the Company shall pay the 100% of the cost, on behalf of Executive, for Executive’s continued group health, dental and vision coverage under COBRA for the Executive and the Executive’s eligible and covered
spouse and/or dependents until the earlier of the end of the period to which the Executive, his spouse and/or dependents, as the case may be, 

  

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are entitled to coverage (including as a result of any subsequent qualifying event that occurs and extends coverage for a person covered hereunder following
the Termination Date) with respect to the Company’s group health, dental and vision plans under COBRA following the Termination Date, or the date that the Executive and his spouse and/or dependents become covered under another employer’s
group health plans or programs that provide the Executive and his or her spouse and/or dependents with comparable benefits and levels of coverage; and (iv) the post-termination exercise period of the Executive’s outstanding stock option
and stock appreciation right awards with an exercise price of $20.00 or less shall automatically be extended to the end of their original maximum term; provided, however, that if the Executive becomes entitled to benefits under this
Section 5(a), then all of the Executive’s Company stock options with an exercise price exceeding $20.00 per share shall automatically be canceled as of the effective date of the Release referred to in Section 7(c) hereof. 

(b) In no event shall the Executive be obligated to seek other employment or take any other action to mitigate the amounts payable or benefits
provided to the Executive under this Agreement, nor shall any such payments or benefits be reduced by any earnings or benefits that the Executive may receive from any other source. 
 (c) If the Executive is eligible for severance benefits pursuant to this Section 5, then the Executive shall be eligible for and considered for a
bonus (in an amount, if any, determined in the sole and absolute discretion of the Board) for the 2009 calendar year, at the same time other employees are considered for a bonus for such calendar year even though the Executive will no longer be an
employee of the Company at that time; provided, however, that such bonus, if any, shall be pro-rated based on Executive’s service during the year of termination. Any such bonus shall be paid on the date that is six (6) months and one
(1) day following the Termination Date, or if later, the date upon which active employees are paid their annual bonus on account of the 2009 calendar year, but in no event later than December 31, 2010. 
 6. Parachute Payments; Excise Tax. 
 In the event that the severance, acceleration of stock options and other benefits payable to the Executive as a result of a Change of Control of the Company (i) constitute “parachute payments” within the meaning of
Section 280G (as it may be amended or replaced) of the Code and (ii) but for this Section 6, would be subject to the excise tax imposed by Section 4999 (as it may be amended or replaced) of the Code (the “Excise Tax”),
then the Executive’s benefits payable in connection therewith shall be either 
 (a) delivered in full, or 
  

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 (b) delivered as to such lesser extent that would result in no portion of such benefits being subject to
the Excise Tax, 
 whichever of the foregoing amounts, taking into account the applicable federal, state and local income taxes and the Excise Tax, results
in the receipt by the Executive on an after-tax basis, of the greatest amount of benefits, notwithstanding that all or some portion of such benefits may be taxable under the Excise Tax. Unless the Company and the Executive otherwise agree in
writing, any determination required under this Section 6 shall be made in writing in good faith by a “Big Four” national accounting firm selected by the Company or such other person or entity to which the parties mutually agree (the
“Accountants”). Any reduction in payments and/or benefits required by this section shall occur in the following order: (1) reduction in vesting acceleration of stock options; (2) reduction in vesting acceleration of restricted
stock units and restricted stock; (3) reduction of cash payments; and (4) reduction of other benefits paid or provided to the Executive. In the event that acceleration of vesting of equity awards is to be reduced, such acceleration of
vesting shall be cancelled in the reverse order of the date of grant for the Executive’s equity awards. If two or more equity awards are granted on the same date, each award will be reduced on a pro-rata basis. For purposes of making the
calculations required by this Section 6, the Accountants may make reasonable assumptions and approximations concerning applicable taxes and may rely on reasonable, good faith interpretations concerning the application of the Code. Any good
faith determination of the Accountants made hereunder shall be final, binding and conclusive upon the Company and the Executive. 
 The
Company and the Executive shall furnish to the Accountants such information and documents as the Accountants may reasonably request in order to make a determination under this Section 6. The Company shall bear all costs the Accountants may
reasonably incur in connection with any calculations contemplated by this Section 6. 
 7. Limitations and Conditions on
Benefits. The benefits and payments provided under this Agreement shall be subject to the following terms and limitations: 
 (a)
Withholding Taxes. The Company shall withhold required foreign, federal, state and local income and employment taxes from any payments hereunder. 
 (b) Confidential Information, Secrecy and Invention Agreement Prior to Receipt of Benefits. The Executive shall have executed and delivered to the Company, a standard form of the Company’s confidential
information, secrecy and invention agreement, a copy of the current form of which is attached as Exhibit B (the “Confidential Information, Secrecy and Invention Agreement”), prior to the receipt or provision of any benefits
(including the acceleration benefits) under this Agreement. Additionally, the Executive agrees that all documents, records, apparatus, equipment and other physical property that is furnished to or obtained by the Executive in the course of his or
her employment with the Company shall be and shall remain the sole property of 

  

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the Company. The Executive agrees not to make or retain copies, reproductions or summaries of any such property, except as otherwise necessary while acting
in the normal course of business. In the event of any material breach by the Executive of the Confidential Information, Secrecy and Invention Agreement that is not cured within thirty (30) days of notice of such breach to the Executive, all
benefits payable under Section 5 of this Agreement shall immediately terminate and all outstanding stock options shall immediately be canceled. 
 (c) Employee Agreement and Release Prior to Receipt of Benefits. If the Executive’s employment with the Company terminates under circumstances entitling him to benefits under Section 5(a), then prior
to, and as a condition of the receipt of any benefits (including the acceleration benefits) under this Agreement on account of such termination, the Executive (or in the event of Executive’s death or Disability, his estate or personal
representative, respectively) shall execute a release of claims in the form attached as Exhibit C (the “Release”) prior to receipt of benefits. The receipt of any severance payments or benefits pursuant to Section 5 will be
subject to the Executive signing and not revoking such Release and provided that such agreement is effective within twenty-eight (28) days following the Termination Date. No benefits under Section 5 of this Agreement shall be payable or
made available to the Executive on account of a termination until the Release becomes effective. Such Release shall specifically relate to all the Executive’s rights and claims in existence at the time of such execution and shall confirm the
Executive’s obligations under the Company’s standard form of Confidential Information, Secrecy and Invention Agreement. 
 (d)
Non-Competition and Non-Solicitation Agreement. If the Executive’s employment with the Company terminates under circumstances entitling him to benefits under Section 5(a), then prior to, and as a condition of the receipt of any
benefits (including the acceleration benefits) under this Agreement on account of such termination, the Executive shall, as of the date of such termination, enter into a thirty-six (36) month non-competition and non-solicitation agreement in
the form attached as Exhibit D (the “Non-Competition and Non-Solicitation Agreement”). In the event of any breach by the Executive of the Non-Competition and Non-Solicitation Agreement, all benefits payable under Section 5 of
this Agreement shall immediately terminate and all outstanding stock options shall immediately be canceled, and that shall be the sole remedy to the Company for such breach. 
 (e) Consulting Agreement. In the event of any breach by the Executive of the Consulting Agreement, all benefits payable under Section 5 of
this Agreement shall immediately terminate and all outstanding stock options shall immediately be canceled. 
 8. At-Will Employment.
The Company and the Executive acknowledge that the Executive’s employment is and shall continue to be at-will, as defined under applicable law. This Agreement shall not be construed as creating an express or implied contract of employment
between the Executive and the Company. The Executive shall not have any right to be retained in the employment of the Company. 
  

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 9. Notices. Any notice provided under this Agreement shall be in writing and shall be deemed to
have been effectively given (i) upon receipt when delivered personally, (ii) one day after sending when sent by express mail service (such as Federal Express), or (iii) five (5) days after sending when sent by regular mail to the
following address: 
 In the case of the Company: 
 Maxygen, Inc. 
 515 Galveston Drive 
 Redwood City, CA 94063 
 Attn: General Counsel 
 In
the case of the Executive: 
 The last personal residence 
 address known by the Company 
 or to such
other address as the Company or the Executive hereafter designates by written notice in accordance with this Section 9. 
 10.
Litigation/Arbitration Expenses. Reasonable litigation and/or arbitration costs and expenses shall be paid by the Company, win or lose, in connection with any dispute between the Company (and its successors) and the Executive concerning this
Agreement; provided, however, that if the litigation or arbitration is found to have been commenced in bad faith by the Executive, the Executive shall bear all of his or her own costs and expenses in connection with such litigation or arbitration.

 11. Successors and Assigns. This Agreement is intended to bind and inure to the benefit of and be enforceable by the Executive, and
the Company, and any surviving entity resulting from a Change of Control and upon any other person who is a successor by merger, acquisition, consolidation or otherwise to the business formerly carried on by the Company, and their respective
successors, assigns, heirs, executors and administrators, without regard to whether or not such person actively assumes any rights or duties hereunder; provided, however, that the Executive may not assign any duties hereunder without the prior
written consent of the Company. 
  

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 12. Section 409A. 
 (a) Notwithstanding any provision to the contrary herein, no severance payable to the Executive, if any, under this Agreement, when considered together
with any other severance payments or separation benefits that are considered deferred compensation under Section 409A (together the “Deferred Compensation Separation Payments”) that becomes payable under this Agreement by reason of
the Executive’s termination of employment with the Company (or any successor entity thereto) will be made unless such termination of employment constitutes a “separation from service” within the meaning of Section 409A of the
Internal Revenue Code (the “Code”), and any final regulations and Internal Revenue Service guidance promulgated thereunder (“Section 409A”). Each payment and benefit payable under this Agreement is intended to constitute a
separate payment for purposes of Section 1.409A-2(b)(2) of the Treasury Regulations. Any taxable reimbursements and/or taxable in-kind benefits provided in this Agreement shall be made or provided in accordance with the requirements of
Section 409A, including: (i) the amount of any such expense reimbursement or in-kind benefit provided during a taxable year of the Executive shall not affect any expenses eligible for reimbursement in any other taxable year; (ii) the
reimbursement of an eligible expense shall be made no later than the last day of the employee’s taxable year that immediately follows the taxable year in which the expense was incurred; and (iii) the right to any such reimbursement shall
not be subject to liquidation or exchange for another benefit or payment. The foregoing provisions are intended to comply with the requirements of Section 409A so that none of the severance payments and benefits to be provided in this Agreement
will be subject to the additional tax imposed under Section 409A, and any ambiguities herein will be interpreted to so comply. The Company and the Executive agree to work together in good faith to consider amendments to this Agreement and to
take such reasonable actions which are necessary, appropriate or desirable to avoid imposition of any additional tax or income recognition prior to actual payment to Executive under Section 409A. 
 13. Miscellaneous. 
 (a) No provision
of this Agreement may be modified, waived or discharged unless such waiver, modification or discharge is agreed to in writing by each of the parties. 
 (b) No agreements or representations, oral or otherwise, express or implied, with respect to the subject matter hereof have been made by either party that are not expressly set forth in this Agreement. This Agreement
replaces and supersedes in its entirety the Prior Agreement. 
 (c) The invalidity or unenforceability of any provision of this Agreement
shall not affect the validity or enforceability of any other provision of this Agreement, which shall remain in full force and effect. 
  

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 14. Governing Law. This Agreement shall be governed by, and construed in accordance with, the laws
of the State of California, regardless of the law that might be applied under applicable principles of conflicts of law. 
 15. Entire
Agreement. Upon its Effective Date, this Agreement, together with the Employee Agreement and Release; the Confidential Information, Secrecy and Invention Agreement; the Non-Competition and Non-Solicitation Agreement; the Consulting Agreement;
and the agreements relating to the Executive’s equity compensation (as modified hereby) represent the entire agreement and understanding between the Company and the Executive concerning the Executive’s transition, termination and
consulting arrangement with the Company. As of its Effective Date, this Agreement supersedes the Prior Agreement in its entirety. 
  

					
	MAXYGEN, INC.
		
	By:	 	  

		 	Louis Lange
		 	Chairman, Compensation Committee
			
	Date:	 		 	, 2009
	
	THE EXECUTIVE
	
	  

	[Name], [Title]
			
	Date:	 		 	, 200

  

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 Exhibit A 
 to Change of Control Agreement 
 MAXYGEN, INC. 
 CONSULTING AGREEMENT 
 This Consulting Agreement (“Agreement”), effective as
of [            ] (the “Effective Date”), is made by and between Maxygen, Inc., a corporation formed under the laws of the State of Delaware, with offices at 515 Galveston Drive,
Redwood City, CA 94063 (the “Company”) and [                    ], an individual (the “Consultant”). 
 BACKGROUND 
 The Consultant is party to an
Amended and Restated Change in Control Agreement (the “Change in Control Agreement”) with the Company dated [            ]. Pursuant to the terms of the Change in Control
Agreement, the Consultant agrees to enter into this Agreement following Consultant’s termination as an executive of the Company and to continue to abide by this Agreement as a condition of receiving certain benefits and payments under the
Change in Control Agreement. The Company desires to have the Consultant provide consulting services to the Company, and the Consultant is willing to provide such consulting services and assistance, on the terms and conditions set forth below.
Accordingly, the parties hereto hereby agree as follows: 
 1. Consulting Services. 
 1.1 The Consultant shall advise the Company and its Affiliates and their respective management, employees and agents regarding the business of the
Company. The Consultant shall at all times retain the right to control the manner and means of performance hereunder; provided, however, that the Consultant shall at all times provide the services and otherwise perform his obligations hereunder in a
professional manner, with reasonable skill and care and in accordance with the terms and conditions of this Agreement. 
 1.2 From time to
time during the term of this Agreement (including any extension or renewal term thereof) upon request by the Company, the Consultant shall provide consulting and advisory services to the Company and its Affiliates and their respective management,
employees and agents at reasonable times agreed upon by the Consultant and the Company at the Company’s offices, or such other locations as may be agreed upon by the Consultant and the Company. Such consultation may be provided by telephone, by
electronic mail, by audioconference, by videoconference and/or through written correspondence. 

 2. Consideration; Payment. 
 2.1 In consideration for consulting services provided by the Consultant to the Company hereunder, the Company shall pay to the Consultant a consulting fee of
[$                 per hour] [TBD by dividing base salary by 2000] for each hour devoted to consulting for the Company as provided hereunder (“Consulting
Hour”). Unless otherwise agreed to in writing by the parties, the Consultant’s consulting time shall not include travel time. 
 2.2 In addition to any consulting fees due to the Consultant pursuant to Section 2.1 above, the Company will reimburse reasonable out-of-pocket expenses (including reasonable travel expenses) actually incurred by the Consultant in the
course of performing the consulting services hereunder, in compliance with the Company’s travel policies for its officers and subject to customary written verification of such expenses in a form reasonably satisfactory to the Company, within
thirty (30) business days after the Company’s receipt from the Consultant of a proper written invoice therefore. 
 2.3 The
Consultant shall provide to the Company a written invoice of any services provided by Consultant and the date and time spent on such consulting services. 
 2.4 The Consultant and Company agree that the time spent on services Consultant is expected to perform under this Agreement will not exceed 20% of the average level of time spent on services Consultant performed for
the Company over the immediately preceding three-year period. 
 2.5 The Consultant will not be eligible for, nor will participate in, any
health, pension, or other employee benefit plan sponsored or established by the Company for the benefit of its employees. 
 3. Term and Termination.

 3.1 The term of this Agreement will begin on the Termination Date (as defined in the Change in Control Agreement) and the Agreement will
continue in full force and effect until the third anniversary of the Termination Date, unless earlier terminated as provided in Sections 3.2 and 3.3 below or extended or renewed pursuant to Section 3.4 below (the “Term”). 

3.2 The Company may terminate this Agreement for any reason or no reason with at least ninety (90) days written notice of termination to the
Consultant. 
 3.3 This Agreement will terminate automatically upon the Consultant’s death, or in the event the Consultant becomes
disabled and such disability substantially impairs the Consultant’s ability to carry out his or her obligations hereunder. In such case, the Company’s obligation to pay ceases after the date of termination, except for those services
actually performed on or prior to the date of such termination. 
 3.4 This Agreement may be extended or renewed for additional agreed upon
periods upon the written agreement of the parties. 
  

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 3.5 In the event, following the first anniversary of the Termination Date, Executive’s obligations
under this Agreement render Executive unable to secure employment with a new employer, then the parties (including any party who succeeds to the Company’s interests as a result of a Change of Control), shall negotiate in good faith a
modification or earlier termination of this Agreement. 
 4. Certain Other Contracts. 
 The Consultant shall not disclose to the Company, or bring onto the Company’s premises, or induce the Company to use, any information that the
Consultant is obligated to keep confidential pursuant to an existing agreement with any third party, and nothing in this Agreement will be construed to impose any obligation on the Consultant to the contrary. 
 The Consultant shall not perform consulting work hereunder on time that the Consultant is required to devote to any third party. The Consultant shall not
use the funding, resources and facilities of any third party to perform consulting work hereunder and shall not perform the consulting work hereunder in any manner that would give any third party rights to the product of such work. 
 The Consultant has disclosed and, during the term of this Agreement (including any extension or renewal term thereof), shall continue to disclose to the
Chief Executive Officer of the Company, or his designee, any conflicts between this Agreement and any other agreements or obligations binding the Consultant. 
 The Consultant acknowledges that, except as set forth in the Change in Control Agreement, the Company has not made any agreement or commitment, or offered to the Consultant any such agreement or commitment,
(i) to have the Consultant perform any additional services, (ii) to make any other payments to the Consultant, or (iii) to enter into any other agreement with or commitment to the Consultant. 
 5. Inventions and Documents; Assignment. 
 The
Consultant shall promptly and fully disclose to the Chief Executive Officer of the Company (or his designee) any and all work product and intellectual property, including without limitation any invention, improvement, algorithm, code, discovery,
process, know-how, design right, copyright, mask work, formula, technique, method, and/or trade secret, whether or not patentable, whether or not copyrightable, made, discovered, conceived, developed, generated, contributed to, or first reduced to
practice by the Consultant, either alone or jointly with others, while performing or arising from the services provided hereunder (collectively, “Inventions”). The Consultant understands and agrees that all Inventions are and shall remain
the exclusive property of the Company and shall be treated as Confidential Information (as defined in Section 6 below). The Consultant agrees to assign and hereby assigns to the Company (or its designee) all right, title and interest in and to
any such Inventions. The Consultant shall execute all instruments necessary to perfect the assignment of such Inventions to the Company (or its designee) and to enable the Company or its designee to apply for, obtain, and enforce 

  

 3 

 
patents, copyrights and other intellectual property rights in any and all countries on such Inventions. The Consultant hereby irrevocably designates the
Secretary of the Company as the Consultant’s agent and attorney-in-fact to execute and file any such document and to do all lawful acts necessary to apply for and obtain such patents, copyrights and other intellectual property rights, and to
enforce the Company’s rights (or the rights of its designee) under this paragraph. 
 The parties acknowledge that all original works of
authorship, including but not limited to computer software, which are made by the Consultant within the scope of the consulting services provided to the Company hereunder and which are protectable by copyright shall be “works made for
hire” within the meaning of the Copyright Law of the United States of America and its related laws contained in Title 17 of the United States Code and are hereby assigned to Company (or its designee) pursuant to such laws; provided, however,
that in no event shall anything in this Agreement be construed to render the Consultant an employee of the Company under any state or local labor or employment laws. 
 All documents, data and/or other records provided by or obtained from the Company or created as a result of the consulting services provided hereunder, including any summary, abstract or excerpt thereof, (the
“Documents”) are, will be and shall remain the Company’s sole property and must be promptly returned to the Company when this Agreement expires or terminates, as the case may be. Any copyright in such Documents and any other documents
of any other work prepared for the Company by the Consultant shall be solely owned by the Company. 
 No royalty or other payment will be due
to the Consultant in respect of any Inventions or the assignment thereof to the Company. 
 This Section 5 will survive the expiration
or termination of this Agreement. 
 6. Confidentiality. 
 The Consultant acknowledges that, during the course of performing the consulting services hereunder, confidential and proprietary information (i) owned by the Company and/or its Affiliates (e.g., technical
information, business plans, identification or characterization of biological or other materials, results and/or design of experiments and/or preclinical or clinical testing, financial analysis or marketing plans), and/or (ii) received by the
Company and/or its Affiliates in confidence from one or more third parties, may, in each case, be disclosed to the Consultant by or on behalf of the Company, and that in connection with the consulting activities conducted by Consultant under this
Agreement the Consultant will be developing information and creating work product related to the Field (e.g. inventions, projects, products, potential customers, personnel, business plans, finances and/or other commercially valuable information).
All such information described in the previous sentence, whatever its form or medium (whether in written, oral, electronic, or graphic format), shall be referred to as “Confidential Information.” The Consultant acknowledges and agrees that
the Company’s business area is extremely competitive, that the success of the Company’s business is dependent in part upon the maintenance of secrecy of Confidential Information, and that any disclosure of the Confidential Information
would result in serious harm to the Company. 
  

 4 

 The Consultant agrees that the Confidential Information of the Company will be used by the Consultant
only in connection with the consulting services hereunder, and will not be used in any way that is detrimental to the Company. 
 The
Consultant agrees to hold in strict confidence and not to disclose, directly or indirectly, the Confidential Information of the Company to any third person or entity, other than representatives or agents of the Company. 
 The term “Confidential Information” does not include information to the extent that it (i) is or becomes generally available to the public
other than through breach of this Agreement or other wrongful act by the Consultant, (ii) was already lawfully within the Consultant’s possession prior to being furnished to the Consultant by or on behalf of the Company hereunder, or
(iii) becomes available to the Consultant on a nonconfidential basis from a third party who has no obligation of confidentiality to the Company or any of its Affiliates. Specific Confidential Information shall not be deemed to be within any of
the foregoing exclusions merely because it is within the scope of more general information within one or more of the exclusions. Further, any combination of Confidential Information (whether or not combined with non-confidential information) shall
not be deemed to be within the above exceptions merely because one or more individual items of Confidential Information are within the above exceptions. 
 The Consultant may disclose any Confidential Information that is required to be disclosed by applicable law, government regulation or court order; provided that if any such disclosure is required, the Consultant shall
give the Company reasonable advance notice of any such contemplated disclosure so that the Company may seek a protective order or take other action reasonable in light of the circumstances to prevent and/or limit the scope of any such disclosure.

 Upon expiration or termination of this Agreement, the Consultant will promptly return to the Company or, at the Company’s request,
destroy (and provide to the Company written confirmation of such destruction) all materials containing Confidential Information as well as data, records, reports and other property, furnished by the Company to the Consultant or produced by the
Consultant in connection with services rendered hereunder, together with all copies, excerpts, summaries and abstracts of any of the foregoing. Notwithstanding such return or destruction, as the case may be, the Consultant shall continue to be bound
by the terms and conditions of this Section 6 for a period of five (5) years after the termination or expiration of this Agreement. This Section 6 shall survive the termination or expiration of this Agreement (including any extension
or renewal term thereof). 
 7. Use of Equipment and Facilities. If, at any time, the Consultant is required to work at any of the Company’s
premises or use any of its equipment, the Consultant will comply with all relevant health, safety and security regulations and related instructions issued by the Company. 
  

 5 

 8. Use of Name. It is understood by the Consultant that the name of the Consultant may appear in disclosure
documents required by securities laws, and in other regulatory and administrative filings in the ordinary course of the Company’s business. 
 9. No
Conflict; Valid and Binding. The Consultant warrants and represents that (i) neither the execution of this Agreement nor the performance of the Consultant’s obligations under this Agreement will result in a violation or breach of any
other agreement by which the Consultant is bound, (ii) the Consultant has the legal power and authority and right to enter into and perform under this Agreement without violating the rights or obtaining the consent of any third party, and
(iii) the Consultant is entering this Agreement as principal and not as agent for any other party. The Company represents that this Agreement has been duly authorized and executed and is a valid and legally binding obligation of the Company.

 10. Notices. Any notice provided under this Agreement shall be in writing and shall be deemed to have been effectively given (i) upon receipt
when delivered personally, (ii) one day after sending when sent by private courier service (such as Federal Express), or (iii) five (5) days after sending when sent by first-class mail (postage prepaid), in each case to the applicable
address noted herein above or to other such address as may have been last designated by the Company or the Consultant by written notice to the other party as provided herein. 
 11. Independent Contractor; Withholding. 
 The parties agree that the Consultant will at all times be
an independent contractor, and not an agent or an employee, in the performance of the consulting services hereunder, and nothing in this Agreement shall be construed or have effect as constituting any relationship of employer and employee or of
partnership between the Company and the Consultant. The Consultant does not have the power or authority to bind the Company or to assume or create any obligation or responsibility, express or implied, on the Company’s behalf or in the
Company’s name, and the Consultant shall not represent to any person or entity that the Consultant has such power or authority. Consultant shall not act as an agent nor be deemed to be an employee of the Company for the purposes of any employee
benefit program, unemployment benefits, or otherwise. 
 The Consultant shall provide the Company with his United States Tax Identification
Number (TIN) upon execution of this Agreement. The Company shall provide the Consultant with an Internal Revenue Service (IRS) Form 1099 in connection with the performance of the services hereunder. The Consultant recognizes that no amount will be
withheld by the Company from the Consultant’s compensation for payment of any federal, state, or local taxes or related payroll deductions of any country, and that the Consultant has sole responsibility to pay all such taxes, if any, and file
all such returns as may be required by applicable laws and regulations with respect to the Consultant’s performance of the consulting services hereunder and receipt of fees under this Agreement, and the Consultant shall indemnify and hold
harmless the Company from the Consultant’s failure to do so. 
  

 6 

 12. Assignment; Successors and Assigns. Due to the personal nature of the services to be rendered by the
Consultant hereunder, the Consultant may not assign this Agreement nor subcontract any of the consulting services to be performed under this Agreement. The Company may assign all its rights and liabilities under this Agreement to any of its
Affiliates or to a successor to all or a substantial part of its business or assets without the consent of the Consultant. Subject to the foregoing, this Agreement will inure to the benefit of and be binding upon each of the assigns and successors
of the respective parties. 
 13. Advice of Counsel. Each party represents that it has voluntarily executed this Agreement having read and fully
understood it, and after having the opportunity to freely consult with counsel or other advisor(s) of each party’s choice, and each acknowledges and agrees that this Agreement shall not be deemed to have been drafted by one party or the other
and will be construed accordingly. 
 14. Severability. If any provision of this Agreement shall be declared invalid, illegal or unenforceable, such
provision shall be severed and the remaining provisions shall continue in full force and effect. 
 15. Remedies. The Consultant acknowledges that the
Company would have no adequate remedy at law to enforce Sections 5 and/or 6 hereof. In the event of a violation by the Consultant of such Sections notwithstanding, the Company shall have the right to obtain from a court of competent jurisdiction
injunctive relief and/or other similar equitable remedies for any such violation, without the requirement of posting bond or other similar measures. 
 16.
Indemnity. The Company shall indemnify, defend and hold harmless the Consultant, from and against all expenses and liabilities arising from any claim or proceeding brought by any third party, including any shareholder of the Company, based on
or relating to any services performed by Consultant for the Company pursuant to this Agreement, except to the extent that such expense or liability is due to the negligence or willful misconduct of Consultant. In the event that Consultant becomes
aware of any claim or proceeding he believes is subject to this Section 16 he shall promptly notify the Company and cooperate fully with the Company and its counsel in the defense and/or settlement of any such claim or proceeding. This
Section 16 shall survive the termination or expiration of this Agreement (including any extension or renewal term thereof). 
 17. Arbitration.
The parties hereby agree that any dispute arising under this Agreement, or in connection with any breach thereof, shall be finally resolved through binding arbitration conducted in San Francisco, California, in accordance with the Commercial
Arbitration Rules of the American Arbitration Association by one (1) arbitrator appointed in accordance with such Rules. The arbitrator shall determine what discovery will be permitted, and shall not order or require discovery against either
party of a type or scope that is not permitted against the other party because of differences in applicable law. The costs of the arbitration shall be shared equally by the parties, and each party shall bear its own costs and attorneys’ and
witness’ fees. No punitive damages may be granted by the arbitrator. The parties agree that the arbitrator’s decision shall be the sole, exclusive and binding remedy between them regarding any and all disputes, controversies, claims and
counterclaims presented to the arbitrator. 
  

 7 

 18. Governing Law; Entire Agreement; Amendment. This Agreement shall be governed by the laws of the State of
California without reference to the conflicts of laws principles, represents the entire understanding of the parties with respect to the subject matter hereof, supersedes and cancels all prior agreements, understandings, arrangements or
representations between the parties with respect to the consulting services to be provided hereunder, and may only be amended by written agreement of the parties. Notwithstanding the above, the parties agree that the Change in Control Agreement and
that certain Confidential Information, Secrecy and Invention Agreement; Employee Agreement and Release; and Non-Competition and Non-Solicitation Agreement which were entered into in connection with the Change in Control Agreement, as well as certain
equity award agreements between Consultant and the Company referenced in the Change in Control Agreement, shall remain in full force and effect. 
 19.
Headings. The underlined headings contained in this Agreement are for convenience of reference only, shall not be deemed to be part of this Agreement, and shall not be referred to in connection with the construction or interpretation of this
Agreement. 
 20. Definition of Affiliates. In this Agreement, “Affiliates” means any and all corporations or other business entities which
(directly or indirectly) control, are controlled by, or are under common control with the Company. 
 IN WITNESS WHEREOF, the parties have
executed this Agreement as of the date first written above. 
  

									
	UNDERSTOOD AND AGREED:	 	
			
	MAXYGEN, INC.	 		 	CONSULTANT:
					
	By:	 	  
	 		 	Signature:	 	  

	Name:	 	  
	 		 	Name:	 	[                                       
                                         
    ]
	Title:	 	  
	 		 		 	

  

 8 

 Exhibit B 
 to Change of Control Agreement 
 MAXYGEN, INC. 
 CONFIDENTIAL INFORMATION, SECRECY AND 
 INVENTION AGREEMENT 
 THIS AGREEMENT (the “Agreement”), made effective as of this      day of
            , 2009 (the “Effective Date”), by and between Maxygen, Inc., with principal place of business at 515 Galveston Drive, Redwood City, California 94063
(“MAXYGEN”), and [                                    ],
(the “Receiving Party”), is entered into in connection with the following facts and circumstances: 
 WHEREAS, MAXYGEN and the
Receiving Party have entered into that certain Amended and Restated Change in Control Agreement (“Change in Control Agreement”) pursuant to which the Receiving Party agrees to provide certain consulting services to MAXYGEN pursuant to a
consulting agreement (the “Services”); 
 WHEREAS, pursuant to the Change in Control Agreement and in connection with the Services,
the Receiving Party further agrees to enter into this the Agreement and continue to abide by its terms as a condition of receiving certain benefits and payments under the Change in Control Agreement; and 
 WHEREAS, both MAXYGEN and the Receiving Party desire to assure the protection and preservation of the confidential and proprietary nature of information
to be disclosed or made available by MAXYGEN to the Receiving Party. 
 NOW THEREFORE, in consideration of the following undertakings, the
parties hereby agree as follows: 
 1. Subject to the other terms of this Agreement, all information disclosed by MAXYGEN or any subsidiary
of MAXYGEN to the Receiving Party hereunder shall be deemed to be “Confidential Information” of MAXYGEN. Confidential Information may be disclosed to or developed, learned or acquired by the Receiving Party in the course of providing
Services to MAXYGEN, whether or not related to the Receiving Party’s duties. Confidential Information is broadly defined, and includes (i) all information that has or could have commercial value or other utility in the businesses in which
MAXYGEN or a subsidiary is engaged or in which it contemplates engaging, and (ii) all information that, if disclosed without authorization, could be detrimental to the interests of MAXYGEN or the entities with which it has business
relationships, whether or not this information is identified as Confidential Information. Subject to the other terms of this Agreement, such Confidential Information shall include any and all information which relates to, refers to or consists of
any of MAXYGEN’s or any subsidiary’s trade secrets, inventions, ideas, compounds, samples, biologic materials, procedures, processes, formulations, formulae, techniques, data, results, research projects, development projects, pre-clinical
studies, clinical studies, testing, engineering, manufacturing, quality assurance/control, 

 
suppliers, regulators, clients, customers, collaborators, contractors, marketing, promotions, sales, pricing, employees, personnel, finances, investors,
strategies, facilities, business and/or operations, whether conducted by MAXYGEN on its own or with one or more third parties, and whether disclosed by MAXYGEN hereunder in written, graphic or electronic form or orally. 
 2. “Confidential Information” shall not be deemed to include information which the Receiving Party can demonstrate by competent written
evidence: (a) was in the public domain when disclosed by MAXYGEN or subsequently becomes public through no act or failure to act on the part of the Receiving Party; (b) was already known by the Receiving Party when disclosed by MAXYGEN; or
(c) was or is furnished to the Receiving Party by a third party not bound by any confidentiality obligation or other restriction on disclosure with respect to such information. 
 3. The Receiving Party shall maintain in trust and confidence, and shall not disclose to any third party except with MAXYGEN’s express prior written
consent, any and all Confidential Information, and shall use any and all Confidential Information only for purposes of performing the Services. The Receiving Party’s obligations of confidentiality and non-use under this Agreement shall remain
in effect for ten (10) years from the Effective Date. No rights or licenses to Confidential Information or to any trademark, invention, copyright, patent, patent application, intellectual property or other property of MAXYGEN are implied or
granted under this Agreement. Nothing herein shall be construed to obligate either party to enter into any further agreements with the other party. 
 4. As between the parties, all Confidential Information (including all copies thereof) shall remain the property of MAXYGEN. After the Receiving Party’s need for Confidential Information has expired, or promptly upon any request by
MAXYGEN, the Receiving Party shall return to MAXYGEN all copies of Confidential Information or shall destroy all copies of Confidential Information, and shall promptly provide a written certification to MAXYGEN of such return or destruction in
compliance with this Agreement. 
 5. Notwithstanding any other provision of this Agreement, disclosure of Confidential Information shall not
be precluded if such disclosure is required under applicable law, regulation or valid order of a court or other governmental body to which the Receiving Party is subject, provided that the Receiving Party shall have first have given written notice
to MAXYGEN of the need for such disclosure reasonably in advance so that MAXYGEN may (if it elects) seek a protective order or other confidential treatment of the Confidential Information. Any disclosure of Confidential Information as permitted
under this Section 5, (i) shall be limited to only that Confidential Information which is necessary to comply with such law, regulation or order of a court or government body, and (ii) shall in no way alter the confidential nature of
such Confidential Information for all other purposes. 
 6. The Receiving Party acknowledges and agrees that it is aware of the restrictions
imposed by the United States federal securities laws and other applicable foreign and domestic laws on a person possessing material non-public information about a public company and that the Receiving Party will comply with such laws. 
  

 2 

 7. The Receiving Party will promptly disclose to MAXYGEN any and all formulas, processes, techniques,
data, copyrightable material, improvements and inventions, whether or not patentable or copyrightable, which the Receiving Party makes, conceives, learns or reduces to practice, either alone or jointly with others, which are related to or useful in
MAXYGEN’s business, and which result from the Receiving Party’s performance of the Services or from the Receiving Party’s use of MAXYGEN’s Confidential Information or facilities (collectively, “Inventions”). 

8. Any and all materials, data, work product, results, reports and any other information received, generated, derived or provided to MAXYGEN by the
Receiving Party as part of or in connection with the performance of the Services hereunder shall be and remain the sole property of MAXYGEN. In addition, all Confidential Information, all Inventions and all patent, copyright and other rights related
thereto shall be and remain the sole property of MAXYGEN. The Receiving Party hereby assigns to MAXYGEN any rights he or she may have or acquire in any of the foregoing (including all such Confidential Information, Inventions and all patent,
copyright and other rights related thereto), and the Receiving Party shall not have any rights to disclose or otherwise use any MAXYGEN property hereunder except in his or her performance of Services hereunder, or otherwise only with MAXYGEN’s
prior written consent. The Receiving Party shall assist MAXYGEN (at the latter’s expense) in every proper way (including execution of patent applications and other documents) to obtain and enforce patents on any Inventions and to evidence
MAXYGEN’s ownership of its property hereunder. The Receiving Party’s obligation to assist MAXYGEN in obtaining and enforcing patents will continue beyond the time that the Receiving Party provides Services to MAXYGEN. MAXYGEN will
compensate the Receiving Party at reasonable rates for the assistance the Receiving Party provides at MAXYGEN’s request after the Receiving Party has ceased providing Services to MAXYGEN. The Receiving Party hereby irrevocably appoints MAXYGEN
and its duly authorized officers and agents as the Receiving Party’s agents and attorneys-in-fact to execute and file all documents and perform all other lawful acts related to the foregoing. 
 9. It is acknowledged that the Receiving Party may possess certain inventions, processes, know-how, trade secrets, computer technical expertise and
software and other intellectual property, all of which has been independently developed without the benefit of any Confidential Information or any other property of MAXYGEN under this Agreement and which is owned or controlled by the Receiving Party
(collectively, “Receiving Party Property”). The Receiving Party and MAXYGEN agree that any Receiving Party Property or any improvements thereto which are used, improved, modified or further developed solely by the Receiving Party during
the Receiving Party’s performance of the Services, which are the product of the Receiving Party’s technical expertise, which are related to the Receiving Party’s line of business or the way he or she performs his or her services, and
which do not use or include any Confidential Information or any other property of MAXYGEN, shall be and remain the property of the Receiving Party. 
  

 3 

 10. The parties agree that money damages would not be a sufficient remedy for any breach of this
Agreement by the Receiving Party and that, in the event of such a breach, MAXYGEN may be entitled to equitable relief including injunctive relief and specific performance. Such remedies shall be in addition to any other remedies at law or in equity
available to MAXYGEN. 
 11. The Receiving Party acknowledges that MAXYGEN is subject to extensive federal and state laws and regulations,
including but not limited to laws and regulations of the United States Food and Drug Administration (“FDA”), the International Committee on Harmonization (“ICH”) and other health authorities. These laws and regulations provide,
inter alia, that (a) vendors that provide MAXYGEN with products, supplies, equipment or services that may be used in the production or testing of medicines or pharmaceuticals or may affect, process, interpret or otherwise affect medical or
pharmaceutical data, directly or indirectly, must meet certain regulatory minimum validation requirements and (b) that MAXYGEN must perform quality assurance audits on any vendors that may provide such supplies, equipment or services. The
Receiving Party agrees to cooperate with MAXYGEN in satisfying these requirements, as applicable, including allowing MAXYGEN, the FDA, the ICH and other health authorities to perform any necessary audits of the Receiving Party’s records and/or
facilities and providing MAXYGEN, the FDA, the ICH and other health authorities with any necessary information and materials. 
 12. The
Receiving Party acknowledges and agrees that the Receiving Party is not an employee of MAXYGEN and that this Agreement is not an employment contract of any type. 
 13. This Agreement shall be governed by the laws of the State of California, without regard to its conflicts of laws principles. This Agreement contains the final, complete and exclusive agreement of the parties
relative to the subject matter hereof, and supersedes any and all prior agreements or understandings (oral or written) between the parties with respect to the subject matter hereof. This Agreement may not be changed, modified, amended or
supplemented except by mutual written agreement of both parties. If any of the provisions of this Agreement are held invalid or unenforceable, unless such invalidity or unenforceability substantially frustrates the underlying intent and sense of the
remainder of this Agreement, such invalidity or unenforceability shall not affect the remainder of this Agreement. This Agreement may be signed in one (1) or more counterparts, each of which will be deemed an original but all of which together
will constitute one and the same instrument. 
  

 4 

									
	AGREED TO:	 		 	AGREED TO:
			
	MAXYGEN, INC.	 		 	RECEIVING PARTY
					
	By:	 	  
	 		 	Signature:	 	  

	Name:	 	  
	 		 	Name:	 	  

	Title:	 	  
	 		 		 	
	Date:	 	  
	 		 	Date:	 	  

  

 5 

 Exhibit C 
 to Change of Control Agreement 
 MAXYGEN, INC. 
 AGREEMENT AND RELEASE 
 I hereby confirm my obligations under the Confidential
Information, Secrecy and Invention Agreement that I have previously entered into with the Company. 
 I acknowledge that I have read and
understand Section 1542 of the California Civil Code that reads as follows: 
 A general release does not extend to claims which the
creditor does not know or suspect to exist in his or her favor at the time of executing the release, which if known by him or her must have materially affected his or her settlement with the debtor. 
 I hereby expressly waive and relinquish all rights and benefits under that section and any law of any jurisdiction of similar effect with respect to my
release of any claims I may have against the Company. 
 Except as otherwise set forth in this Agreement and Release (the “Release”) and except for
obligations of the Company set forth in the Change of Control Agreement entered into between the Company and me, I hereby release, acquit and forever discharge the Company, its parents and subsidiaries, and their officers, directors, agents,
servants, employees, shareholders, successors, assigns and affiliates, of and from any and all claims, liabilities, demands, causes of action, costs, expenses, attorneys fees, damages, indemnities and obligations of every kind and nature, in law,
equity, or otherwise, known and unknown, suspected and unsuspected, disclosed and undisclosed (other than any claim for indemnification I may have as a result of any third party action against me based on my employment with the Company), arising out
of or in any way related to agreements, events, acts or conduct at any time prior to and including the Effective Date of this Release (as defined below), including but not limited to: all such claims and demands directly or indirectly arising out of
or in any way connected with my employment with the Company or the termination of that employment, including but not limited to, claims of intentional and negligent infliction of emotional distress, any and all tort claims for personal injury,
claims or demands related to salary, bonuses, commissions, stock, stock options, or any other ownership interests in the Company, vacation pay, fringe benefits, expense reimbursements, severance pay, or any other form of compensation; claims
pursuant to any federal, state or local law or cause of action including, but not limited to, the federal Civil Rights Act of 1964, as amended; the federal Age Discrimination in Employment Act of 1967, as amended (“ADEA”); the federal
Americans with Disabilities Act of 1990; the California Fair Employment and Housing Act, as amended; tort law; contract law; wrongful discharge; discrimination; 

 
fraud; defamation; emotional distress; and breach of the implied covenant of good faith and fair dealing; provided, however, that nothing in this paragraph
shall be construed in any way to release the Company from its obligation to (i) indemnify me pursuant to any applicable statute, provision in the Company’s certificate of incorporation or bylaws, or indemnification agreement, and to
provide me with continued coverage under the Company’s directors and officers liability insurance policy to the same extent that it has provided such coverage to previously departed officers and directors of the Company or (ii) provide the
benefits to me set forth in the Change of Control Agreement entered into between the Company and me; and provided further that this paragraph shall not be effective as a release to claims which cannot be waived under applicable law. 
 I acknowledge that I am knowingly and voluntarily waiving and releasing any rights I may have under ADEA. I also acknowledge that the consideration given
for the waiver and release in the preceding paragraph hereof is in addition to anything of value to which I was already entitled. If and only if I am covered by ADEA, I further acknowledge that I have been advised by this writing, as required by the
ADEA, that: (A) my waiver and release do not apply to any rights or claims that may arise after the Effective Date of this Release; (B) I have the right to consult with an attorney prior to executing this Release; (c) I have
twenty-one (21) days to consider this Release (although I may choose to voluntarily execute this Release earlier); (D) I have seven (7) days following the execution of this Release to revoke the Release; and (E) this Release
shall not be effective until the date upon which the revocation period has expired, which shall be the eighth day after this Release is executed by me (the “Effective Date”). If I am not covered by ADEA, I acknowledge that this Agreement
shall be effective as of the date upon which this Release has been executed by me (the “Effective Date”). 
  

			
	By:	 	  

		 	 THE EXECUTIVE

		
	Date:	 	  

  

 2 

 Exhibit D 
 to Change of Control Agreement 
 MAXYGEN, INC. 
 NON-COMPETITION AND NON-SOLICITATION AGREEMENT 
 This Non-Competition and
Non-Solicitation Agreement (this “Agreement”) is being executed and delivered as of             , 2009 by [EXECUTIVE] (“Executive”) in favor and for the benefit of
Maxygen, Inc. (“Company”). 
 WHEREAS, the Company is entering into a Master Joint Venture Agreement with Haley Pharma Inc.
and Comet Private Company (the “Transaction”); 
 WHEREAS, Executive has entered into that certain Amended and Restated
Change in Control Agreement (“Change in Control Agreement”) with the Company, pursuant to which Executive may receive substantial benefits in connection with the Transaction payable following Executive’s termination of employment from
the Company, subject to certain conditions including Executive’s entering into and not breaching this Agreement. 
 WHEREAS, in
consideration of the benefits payable under the Change in Control Agreement, Executive agrees to enter into this Agreement effective as of the date of the date of Executive’s termination of employment with the Company (the “Effective
Time”). 
 NOW, THEREFORE, in consideration of the premises and the mutual covenants herein contained, the Company and the
Executive agree as follows: 
 1. Effective Date. This Agreement shall be effective as of the Effective Time. 
 2. Noncompetition. During the period commencing on the Effective Time and ending on the 36-month anniversary of the Closing (the
“Non-Competition Period”), Executive shall not (other than in connection with any services to Company or Comet Private Company, or their respective affiliates, successors or assigns), without the prior written consent of Company, directly
or indirectly: 
 (a) engage, anywhere in the Restricted Territory (as defined below), in any business (including research and development),
operations, activities and/or services that are reasonably related to the products and services of the Company or of Comet Private Company, in either case as such exist immediately prior to the Effective Time, including, without limitation, the use
of DNA shuffling recombination technology or involving the discovery or development of protein pharmaceuticals targeting the following: G-CSF, CTLA-4, BAFF, April, OX40, or ICOS (“Competing Business Purpose”); 

 (b) be or become an officer, director, stockholder, owner, affiliate, salesperson, co-owner, partner,
trustee, promoter, technician, engineer, analyst, employee, agent, representative, supplier, contractor, consultant, advisor or manager of or to, or otherwise acquire or hold any interest in, or participate in or facilitate the financing, operation,
management or control of, any firm, partnership, corporation, person, entity or business that engages or participates in a Competing Business Purpose in the Restricted Territory; or 
 (c) contact, solicit or communicate with Company’s customers in connection with a Competing Business Purpose; 
 provided, however, that nothing in this Agreement shall prevent or restrict Executive from any of the following: (i) owning as a passive investment
less than 1% of the outstanding shares of the capital stock of a corporation (whether public or private) that is engaged in a Competing Business Purpose and Executive is not otherwise associated with such corporation; (ii) performing speaking
engagements and receiving honoraria in connection with such engagements; (iii) being employed by any government agency, college, university or other non-profit research organization; (iv) owning a passive equity interest in a private debt
or equity investment fund in which the Executive does not have the ability to control or exercise any managerial influence over such fund; (v) becoming an employee, director, agent, representative, supplier, contractor, consultant, advisor or
manager of or to an Entity that engages or participates in a Competing Business Purpose in the Restricted Territory, if such Entity has more than one distinct business units and Executive is not employed in or providing services to a business unit
of such Entity that engages or participates in a Competing Business Purpose or, if Executive serves on the Board of Directors of such Entity, he recuses himself from all discussion and decision-making with respect to the unit engaging in the
Competing Business Purpose; or (vi) any activity consented to in writing by the Company. 
 “Restricted Territory”
means each and every country, province, state, city, or other political subdivision of the world in which Company, Comet Private Company or any of their subsidiaries or affiliates is currently engaged, or currently plans to engage in a Competing
Business Purpose. 
 3. Nonsolicitation. Executive further agrees that Executive shall not during the Non-Competition Period, directly
or indirectly, without the prior written consent of Company: 
 (a) personally or through others, solicit or attempt to solicit (on
Executive’s own behalf or on behalf of any other person) any employee of Company or Comet Private Company, or any subsidiary thereof or their respective successors or assigns, to leave his or her employment with Company or Comet Private Company
or any of their subsidiaries or their respective successors or assigns; 
 (b) personally or through others, induce, attempt to induce,
solicit or attempt to solicit (on Executive’s own behalf or on behalf of any other person), any 

  

 2 

 
Executive of Company or Comet Private Company, or any subsidiary thereof, to engage in any activity in which Executive would, under the provisions of
Section 2 hereof, be prohibited from engaging. 
 Notwithstanding the foregoing, for purposes of this Agreement, the placement of general advertisements
that may be targeted to a particular geographic or technical area but that are not specifically targeted toward employees of Company, Comet Private Company or of their subsidiaries or their respective successors or assigns, shall not be deemed to be
a breach of this Section 3. 
 4. Severability of Covenants. The covenants contained in Section 2 hereof shall be construed
as a series of separate covenants, one for each country, province, state, city or other political subdivision of the Restricted Territory. Except for geographic coverage, each such separate covenant shall be deemed identical in terms to the covenant
contained in Section 2 hereof. If, in any judicial proceeding, a court refuses to enforce any of such separate covenants (or any part thereof), then Company and Executive agree that such unenforceable covenant (or such part) shall be eliminated
from this Agreement to the extent necessary to permit the remaining separate covenants (or portions thereof) to be enforced. In the event that the provisions of Section 2 or Section 3 are deemed to exceed the time, geographic or scope
limitations permitted by applicable law, then Company and Executive agree that such provisions shall be reformed to the maximum time, geographic or scope limitations, as the case may be, permitted by applicable law. 
 5. Executive Acknowledgement. Executive acknowledges that (i) Executive has received adequate consideration for this Agreement and that the
limitations of time, geography and scope of activity agreed to in this Agreement are reasonable and necessary because, among other things: (A) the Company is engaged in a highly competitive industry, (B) Executive has had unique access to
the trade secrets, confidential and proprietary information, and know-how of the Company, including, without limitation, the plans and strategy (and, in particular, the competitive strategy) of the Company, and (C) Executive believes that this
Agreement provides no more protection than is reasonably necessary to protect Company’s and Comet Private Company’s trade secrets and confidential and proprietary information. 
 6. Remedy. The non-competition and non-solicitation covenants in this Agreement are essential to the Company’s willingness to provide
benefits and payments under the Change in Control Agreement. In the event Executive breaches any provision of Section 2 or 3 of this Agreement, the sole remedy to the Company for such breach shall be that (i) any benefits and payments not
yet provided or paid shall be cancelled immediately, and (ii) any of Executive’s options to purchase common stock of the Company shall be cancelled immediately. 
 7. Non-Exclusivity. The rights and remedies of Company hereunder, and the obligations and liabilities of Executive hereunder, are in addition to their respective rights, remedies, obligations and liabilities
under the law of unfair competition, misappropriation of trade secrets and the like. This Agreement does not limit Executive’s obligations or the rights of Company (or any affiliate of Company) under the terms of any other agreement between
Executive and Company or any affiliate of Company. 
  

 3 

 8. Notices. All notices and other communications pursuant to this Agreement shall be in writing
and deemed to be sufficient if contained in a written instrument and shall be deemed given if delivered personally, telecopied, sent by nationally-recognized overnight courier or mailed by registered or certified mail (return receipt requested),
postage prepaid, to the respective parties at the following address: 
  

	 	(a)	if to Company, to: 

 Maxygen, Inc. 
 515 Galveston Drive 
 Redwood City, CA 94063

 Attn: General Counsel 
  

	 	(b)	if to Executive, to the address for notice set forth on Executive’s signature page hereto. 

 or to such other address as any party may have furnished to the other in writing in accordance herewith, except that notices of change of address shall only be effective upon receipt. 
 9. Severability. If any provision of this Agreement or any part of any such provision is held under any circumstances to be invalid or
unenforceable in any jurisdiction, then: (a) except as otherwise set forth herein, such provision or part thereof shall, with respect to such circumstances and in such jurisdiction, be deemed amended to conform to applicable laws so as to be
valid and enforceable to the fullest possible extent, (b) the invalidity or unenforceability of such provision or part thereof under such circumstances and in such jurisdiction shall not affect the validity or enforceability of such provision
or part thereof under any other circumstances or in any other jurisdiction, and (c) such invalidity of enforceability of such provision or part thereof shall not affect the validity or enforceability of the remainder of such provision or the
validity or enforceability of any other provision of this Agreement. 
 10. Governing Law. This Agreement shall be construed in
accordance with, and governed in all respects by, the laws of the State of California, regardless of the laws that might otherwise govern under applicable principles of conflicts of laws thereof. 
 11. Attorneys’ Fees. Should any litigation, arbitration or other proceeding be commenced between the parties concerning this Agreement
(including, without limitation, the enforcement hereof and the rights and duties of the parties hereunder), the party prevailing shall be entitled, in addition to such other relief as may be granted, such party’s attorneys’ fees and
expenses in connection with such litigation, arbitration or other proceeding. 
  

 4 

 12. Waiver. No failure on the part of any party to exercise any power, right, privilege or remedy
under this Agreement, and no delay on the part of any party in exercising any power, right, privilege or remedy under this Agreement, shall operate as a waiver of such power, right, privilege or remedy; and no single or partial exercise of any such
power, right, privilege or remedy shall preclude any other or further exercise thereof or of any other power, right, privilege or remedy. No party shall be deemed to have waived any claim arising out of this Agreement, or any power, right, privilege
or remedy under this Agreement, unless the waiver of such claim, power, right, privilege or remedy is expressly set forth in a written instrument duly executed and delivered on behalf of the waiving party; and any such waiver shall not be applicable
or have any effect except in the specific instance in which it is given. 
 13. Captions. The captions contained in this Agreement are
for convenience of reference only, shall not be deemed to be a part of this Agreement and shall not be referred to in connection with the construction or interpretation of this Agreement. 
 14. Entire Agreement. This Agreement and the Amended and Restated Change in Control Agreement (including the agreements referenced therein) set
forth the entire understanding of Executive and Company relating to the subject matter hereof and supersede all prior agreements and understandings between any of such parties relating to the subject matter hereof. Executive understands and agrees
that he has had an opportunity to seek his own counsel in his review of this Agreement. 
 15. Amendments. This Agreement may not be
amended, modified, altered, or supplemented other than by means of a written instrument duly executed and delivered on behalf of Company and Executive. 
 16. Assignment. This Agreement and all obligations hereunder are personal to Executive and may not be transferred or assigned by Executive at any time. Company may assign its rights under this Agreement to any
entity in connection with any merger or sale or transfer of all or substantially all of Company’s assets. 
 17. Binding Nature.
This Agreement will be binding upon Executive and Executive’s representatives, executors, administrators, estate, heirs, successors and assigns, and will inure to the benefit of Company and its respective successors and assigns. 
 18. Counterpart Execution. This Agreement may be executed by facsimile and in counterparts, each of which shall be deemed an original and all of
which when taken together shall constitute but one and the same instrument. 
 [Remainder of Page Intentionally Left Blank] 

  

 5 

 In witness whereof, the undersigned have executed this Agreement as of the date first above written.

  

			
	“EXECUTIVE”
		
	By:	 	  

	Print Name:	 	  

	Address:	 	  

	  

	Telephone:	 	  

	Fax:	 	  

	
	“COMPANY”
	
	[                                       
         ]
	a Delaware corporation

			
		
	                                      
	 	
	[name

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