EX-10.1



 Exhibit 10.1 

 
  

EMPLOYMENT AGREEMENT 

BETWEEN 
 GREGORY P.
MADISON 
 AND 

KERYX BIOPHARMACEUTICALS, INC. 
  

 







 EMPLOYMENT AGREEMENT 

 

					
	 1.      Effective Date
	  	 	1	  
		
	 2.      Employment
	  	 	1	  
		
	 3.      Employment Period
	  	 	2	  
		
	 4.      Extent of Service
	  	 	2	  
		
	 5.      Compensation and Benefits
	  	 	2	  
		
	 (a)    Base Salary
	  	 	2	  
		
	 (b)    Incentive, Savings and Retirement Plans
	  	 	2	  
		
	 (c)    Welfare Benefit Plans
	  	 	4	  
		
	 (d)    Expenses
	  	 	4	  
		
	 (d)    Vacation
	  	 	4	  
		
	 6.      Termination of Employment
	  	 	4	  
		
	 (a)    Death
	  	 	4	  
		
	 (b)    Disability
	  	 	4	  
		
	 (c)    Termination by the Company
	  	 	5	  
		
	 (d)    Termination by Executive
	  	 	6	  
		
	 (e)    Notice of Termination
	  	 	7	  
		
	 (f)     Date of Termination
	  	 	7	  
		
	 7.      Obligations of the Company upon Termination
	  	 	7	  
		
	 (a)    Termination by Executive for Good Reason;

Termination by the Company without Cause
	  	 	7	  
		
	 (b)    Death or Disability
	  	 	8	  
		
	 (c)    Termination by the Company for Cause;

Resignation by Executive Other than for Good Reason
	  	 	9	  
		
	 (d)    Expiration of Employment Period
	  	 	9	  
		
	 (e)    Termination of the Agreement by the Company prior to the Start Date without Cause
	  	 	10	  
		
	 8.      Change in Control
	  	 	10	  
		
	 (a)    Definition
	  	 	10	  
		
	 (b)    Severance Benefits
	  	 	11	  
		
	 9.      Non-exclusivity of Rights
	  	 	12	  
		
	 10.    No Mitigation
	  	 	12	  









					
	 11.    Mandatory Reduction of Payments in Certain Events
	  	 	12	  
		
	 12.    Restrictions on Conduct of Executive
	  	 	13	  
		
	 (a)    General
	  	 	13	  
		
	 (b)    Definitions
	  	 	14	  
		
	 (c)    Restrictive Covenants
	  	 	15	  
		
	 (d)    Enforcement of Restrictive Covenants
	  	 	17	  
		
	 13.    Invention Assignment
	  	 	17	  
		
	 14.    Return of Materials
	  	 	18	  
		
	 15.    Successors and Assigns
	  	 	18	  
		
	 16.    Cooperation
	  	 	18	  
		
	 17.    Code Section 409A
	  	 	19	  
		
	 (a)    General
	  	 	19	  
		
	 (b)    Definitional Restrictions
	  	 	19	  
		
	 (c)    Six-Month Delay in Certain Circumstances
	  	 	19	  
		
	 18.    Miscellaneous
	  	 	20	  
		
	 (a)    Governing Law
	  	 	20	  
		
	 (b)    Captions
	  	 	20	  
		
	 (c)    Amendments
	  	 	20	  
		
	 (d)    Notices
	  	 	20	  
		
	 (e)    Severability
	  	 	21	  
		
	 (f)     Withholding
	  	 	21	  
		
	 (g)    Waivers
	  	 	21	  
		
	 (h)    Entire Agreement
	  	 	21	  
		
	 (i)     Arbitration
	  	 	21	  
		
	 (j)     Timing of Release
	  	 	22	  
		
	 (k)    Counterparts; Scanned Signatures
	  	 	22	  








 EMPLOYMENT AGREEMENT 

THIS EMPLOYMENT AGREEMENT (this “Agreement”) is made and entered into this 21st
day of January, 2014 by and between Keryx Biopharmaceuticals, Inc., a Delaware corporation (the “Company”), and Gregory P. Madison (“Executive”), to be effective as of the Effective Date, as defined in Section 1. 

BACKGROUND 
 The Company
desires to engage Executive as Executive Vice President and Chief Operating Officer of the Company in accordance with the terms of this Agreement. Executive is willing to serve as such in accordance with the terms and conditions of this Agreement.

 NOW THEREFORE, in consideration of the foregoing and of the mutual covenants and agreements set forth herein, and other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto agree as follows: 
 1. Effective
Date. The effective date of this Agreement (the “Effective Date”) shall be the date first written above. 
 2.
Employment. 
 (a) Executive shall be employed as the Executive Vice President and Chief Operating Officer of the Company commencing
by no later than February 10, 2014 (the date on which Executive actually commences employment with the Company shall be the “Start Date”); provided, however, that if Executive does not commence employment by February 10, 2014 for
any reason, then this Agreement shall become null and void and neither Executive nor the Company shall have any obligations hereunder other than as expressly set forth in Section 7(e) hereof. In his capacity as Executive Vice President and
Chief Operating Officer, Executive shall have the duties, responsibilities and authority commensurate with such position as shall be assigned to him by the Chief Executive Officer (the “CEO”) and the Board of Directors of the Company (the
“Board”), including but not limited to, overseeing the planning and build-out of a commercial organization and team to support the Zerenex launch in the U.S. and internationally; leading the launch and commercialization efforts for
Zerenex; assisting in business development; and other corporate efforts, as requested and agreed to with the CEO. In his capacity as Executive Vice President and Chief Operating Officer, Executive will report directly to the CEO. The principal
location of the Executive’s employment shall be at the Company’s offices in Boston, Massachusetts, as per Paragraph
 2(b) below. The Executive understands and agrees that he may be required to travel from time to time for business
reasons, including travel to/from the Company’s offices in New York, New York. 
 (b) Executive shall be entitled to lease new office
space, on behalf of the Company, in Boston, Massachusetts, under terms and conditions acceptable to the CEO, for the purpose of building-out the organization to support the launch of Zerenex in the U.S. Such office space will be located no further
than 20 miles from downtown Boston. 

  
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 3. Employment Period. Unless earlier terminated herein in accordance with Section 6
hereof, Executive’s employment shall be for a term beginning on the Start Date and ending on February 15, 2017 (the “Employment Period”). The Employment Period may be extended upon the mutual, written agreement of the parties In
the case of any such extension, the terms and conditions of this Agreement shall continue to govern unless otherwise agreed to in writing by the parties. 

4. Extent of Service. During the Employment Period, Executive agrees to devote his full business time, attention, energy and best
efforts to the business and affairs of the Company and to use Executive’s reasonable best efforts to perform faithfully and efficiently the responsibilities assigned to Executive hereunder. During the Employment Period, it shall not be a
violation of this Agreement for Executive to (A) manage personal investments, or (B) devote time to charitable and community activities or, with the approval of the CEO, industry or professional activities including service on the board of
directors of another corporation, so long as such activities do not interfere or conflict with the performance of Executive’s responsibilities as an employee of the Company in accordance with this Agreement. 

5. Compensation and Benefits. 

(a) Base Salary. During the Employment Period, the Company will pay to Executive a base salary at the rate of U.S. $400,000 per year
(“Base Salary”), less normal withholdings, payable in approximately equal bi-weekly or other installments as are or become customary under the Company’s payroll practices for its employees from time to time. The Compensation Committee
of the Board shall review Executive’s Base Salary annually and, in its sole discretion, may increase Executive’s Base Salary from year to year. Such adjusted salary then shall become Executive’s Base Salary for purposes of this
Agreement. In no event shall the Executive’s Base Salary be reduced during the Employment Period unless such reduction is in connection with a proportionate reduction of compensation applicable to all other executive officers. The annual review
of Executive’s Base Salary by the Board will consider, among other things, Executive’s own performance and the Company’s performance. 

(b) Incentive, Savings and Retirement Plans. During the Employment Period, Executive shall be entitled to participate in all incentive,
savings and retirement plans, practices, policies and programs available to other senior executive officers of the Company (“Peer Executives”), and on the same basis as such Peer Executives. Without limiting the foregoing, the following
shall apply: 
 (i) Annual Performance Bonus. For each year during the Employment Period, Executive will be eligible
to receive an annual performance bonus of up to 50% of his Base Salary (the “Annual Bonus”). The Compensation Committee, in its sole discretion, will establish performance goals and objectives from year to year on which the Annual Bonus
will be based, and the 

  
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Compensation Committee likewise reserves the sole discretion to modify such goals and objectives, or the final amount of the Annual Bonus, based upon events occurring during the related year or
its assessment of the Company’s or the Executive’s performance in general. The Compensation Committee will provide the Executive with such goals and objectives and any modifications it may make. Unless otherwise provided herein, no Annual
Bonus shall be deemed to have been earned by Executive for any year in which Executive is not actively employed by the Company on the last day of the fiscal year to which the bonus relates. The Company shall pay the Annual Bonus no later than two
and a half months after the end of the fiscal year to which the applicable bonus relates. 
 (ii) Equity Grants. On
the Start Date, the Company shall grant to Executive under the 2013 Incentive Plan or a new inducement plan as may be put into effect by the Company (the “Plan”): 
  

	 	1.	85,000 restricted shares of Company common stock (the “Restricted Stock”). The Restricted Stock will vest as to 25,000 shares immediately, and the remaining 60,000 shares vesting over three years with the
first one-third vesting on the first anniversary of the Start Date and thereafter the remaining shares shall vest in equal quarterly installments through the third anniversary of the Start Date, conditioned upon Executive’s continuing
employment, and subject to other terms and conditions set forth in the award certificate memorializing the Restricted Stock and the Plan. The vesting of the Restricted Stock shall accelerate in full upon the occurrence of a Change-in-Control, as
such term is defined in this Agreement. 

  

	 	2.	80,000 stock options (the “Time-Vesting Stock Options”). The Time-Vesting Stock Options will vest over three years with the first one-third vesting on the first anniversary of the Start Date and thereafter the
remaining shares shall vest in equal quarterly installments through the third anniversary of the Start Date, conditioned upon Executive’s continuing employment, and subject to other terms and conditions set forth in the award certificate
memorializing the Time-Vesting Stock Options and the Plan. The vesting of the Time-Vesting Stock Options shall accelerate in full upon the occurrence of a Change-in-Control, as such term is defined in this Agreement. 


 

	 	3.	 115,000 stock options (the “Milestone Stock Options”). The Milestone Stock Options will vest as follows: (i) 15,000 options vesting
upon first commercial sale of Zerenex within 90 days of marketing approval by the FDA, (ii) 30,000 options vesting upon reported Net Sales for Zerenex of 3$25 million in a calendar quarter,
(iii) 30,000 options vesting upon reported 



  
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Net Sales for Zerenex of 3$50 million in a calendar quarter, and (iv) 40,000 options vesting upon reported Net Sales for Zerenex of 3$75 million in a calendar quarter, conditioned upon Executive’s continuing employment, and subject to other terms and conditions set forth in the award certificate memorializing the Milestone Stock
Options and the Plan. The vesting of the Milestone Stock Options shall accelerate in full upon the occurrence of a Change-in-Control, as such term is defined in this Agreement. 


During the Employment Period, Executive may be eligible for additional stock-based awards under the Company’s long-term incentive plans,
as determined by the Compensation Committee from time to time. Nothing herein requires the Board or the Compensation Committee to make additional grants of options or other awards in any year. 

(c) Welfare Benefit Plans. During the Employment Period, Executive and Executive’s eligible dependents shall be eligible for
participation in, and shall receive all benefits under, the welfare benefit plans, practices, policies and programs provided by the Company (including, without limitation, medical, prescription drug, dental, disability, and employee life insurance
plans and programs) (“Welfare Plans”) to the extent available to other Peer Executives. 
 (d) Expenses. During the
Employment Period, Executive shall be entitled to receive prompt reimbursement for all reasonable expenses incurred by Executive in the course of performing his duties and responsibilities under this Agreement, including without limitation
reasonable expenses relating to Executive’s travel to/from the Company’s offices in New York, New York on an as-needed basis, in accordance with the policies, practices and procedures of the Company with respect to travel, entertainment
and other business expenses. 
 (e) Vacation. During the Employment Period, Executive will be entitled to four weeks of paid vacation
per calendar year, subject to and in accordance with the Company’s vacation policies. In accordance with Company policy, vacation days cannot be accrued and any vacation days not used in any calendar year will be forefeited. 

6. Termination of Employment. 

(a) Death. Executive’s employment shall terminate automatically upon Executive’s death during the Employment Period. 

(b) Disability. If the Company determines in good faith that Executive has become Disabled (as defined below) during the Employment
Period, it may give to Executive written notice of its intention to terminate Executive’s employment. In such event, Executive’s employment with the Company shall terminate effective on the 30th day after receipt of such written notice by
Executive (the “Disability Effective Date”), 

  
 4 








 
provided that, within the 30 days after such receipt, Executive shall not have returned to full-time performance of Executive’s duties. For purposes of this Agreement, Executive shall be
Disabled if either of the following conditions is met, as determined by the Board in good faith: 
 (i) Executive is unable
to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment that can be expected to result in death or can be expected to last for one or more periods totaling one hundred and twenty
(120) days in any twelve (12) month period; or 
 (ii) Executive is, by reason of any medically determinable
physical or mental impairment that can be expected to result in death or can be expected to last for one or more periods totaling one hundred and twenty (120) days in any twelve (12) month period, receiving income replacement benefits for
a period of not less than three months under an accident and health plan covering employees of the Company. 
 (c) Termination by the
Company. The Company may terminate Executive’s employment during the Employment Period with or without Cause. For purposes of this Agreement, a termination shall be considered to be for “Cause” if it occurs in conjunction with a
determination by the Board that any of the following has occurred: 
 (i) Executive’s conviction of, pleading guilty to,
or confession to a felony or any crime involving any act of dishonesty, fraud, misappropriation or embezzlement; 
 (ii)
Executive’s misconduct or gross negligence in connection with the performance of his duties hereunder, including a violation of the Company’s written policies or Code of Conduct and Ethics; 

(iii) Executive’s engaging in any fraudulent, disloyal or unprofessional conduct which is, or is likely to be, injurious
to the Company, its financial condition, or its reputation; 
 (iv) Executive’s failure to perform his duties with the
Company (other than any such failure resulting from Executive’s Disability); 
 (v) Executive’s failure to meet
performance standards which may be agreed upon by Executive and the Company in writing from time to time (with the understanding that failure to meet the performance criteria established with respect to an Annual Bonus alone shall not constitute
Cause for purposes of this Agreement); or 
 (vi) Executive’s breach of the covenants set forth in Section 12 of
this Agreement, or material breach of any other provisions of this Agreement. 

  
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 If the Company determines that it has grounds to terminate Executive’s employment for Cause
pursuant to the provisions of clauses (iv), (v), or (vi) of this subsection (c), then it will first deliver to Executive a written notice setting forth with specificity the occurrence deemed to give rise to a right to terminate his employment
for Cause, and Executive will have 30 days after the receipt of such written notice to cease such actions or otherwise correct any such failure or breach. If Executive does not cease such actions or otherwise correct such failure or breach within
such 30-day period, or having once received such written notice and ceased such actions or corrected such failure or breach, Executive at any time thereafter again so acts, fails, or breaches, the Company may terminate his employment for Cause
immediately. The Company may terminate Executive’s employment without Cause, or for Cause pursuant to the provisions of clauses (i), (ii), or (iii) of this subsection (c), immediately. 

(d) Termination by Executive. Executive’s employment may be terminated by Executive with or without Good Reason. Executive’s
termination without Good Reason shall require 30 days’ prior written notice to the Company. Executive’s termination for Good Reason must occur within a period of 90 days after the occurrence of an event of Good Reason. For purposes of this
Agreement, “Good Reason” shall mean any of the following, without Executive’s consent: 
 (i) a material
diminution in Executive’s Base Salary, which for purposes of this Agreement shall mean a reduction of more than 15% in the aggregate; 

(ii) a material diminution in Executive’s title, position, authority, duties, or responsibilities, or not reporting
directly to the CEO; 
 (iii) a delay in marketing approval of Zerenex by the United States Food and Drug Administration of
greater than nine (9) months from June 7, 2014; 
 (iv) a material change in the geographic location of the
Executive’s principal place of business, which for purposes of this Agreement shall mean a location more than 35 miles from the Company’s offices in Boston, Massachusetts at which the Executive was principally employed except for required
travel on the Company’s business; or 
 (v) any other action or inaction that constitutes a material breach by the
Company of this Agreement. 
 A termination by Executive shall not constitute termination for Good Reason unless Executive shall first have
delivered to the Company a written notice setting forth with specificity the occurrence deemed to give rise to a right to terminate for Good Reason (which notice must be given no later than 60 days after the initial occurrence of such event), and
there shall have passed a reasonable time (not less than 30 days) within which the Company may take action to correct, rescind or otherwise substantially reverse the occurrence supporting termination for Good Reason as identified by Executive. Good
Reason shall not include Executive’s death or Disability. The parties intend, believe and 

  
 6 








 
take the position that a resignation by the Executive for Good Reason as defined above effectively constitutes an involuntary separation from service within the meaning of Section 409A of
the Code and Treas. Reg. §1.409A-1(n)(2). 
 (e) Notice of Termination. Any termination by the Company or Executive shall be
communicated by Notice of Termination to the other party hereto given in accordance with Section 18(d) of this Agreement. For purposes of this Agreement, a “Notice of Termination” means a written notice which (i) indicates the
specific termination provision in this Agreement relied upon, (ii) to the extent applicable, sets forth in reasonable detail the facts and circumstances claimed to provide a basis for termination of Executive’s employment under the
provision so indicated, and (iii) if the Date of Termination (as defined below) is other than the date of receipt of such notice, specifies the termination date. The failure by the Company or Executive to set forth in the Notice of Termination
any fact or circumstance which contributes to a showing of Cause or Good Reason shall not waive any right of the Company or Executive hereunder or preclude the Company or Executive from asserting such fact or circumstance in enforcing its rights
hereunder. 
 (f) Date of Termination. “Date of Termination” means (i) if Executive’s employment is terminated
other than by reason of death or Disability, the date of receipt of the Notice of Termination or any later date specified therein, or (ii) if Executive’s employment is terminated by reason of death or Disability, the Date of Termination
shall be the date of death of Executive or the Disability Effective Date, as the case may be. 
 7. Obligations of the Company upon
Termination. 
 (a) Termination by Executive for Good Reason; Termination by the Company without Cause. If, during the Employment
Period, the Company shall terminate Executive’s employment without Cause, or Executive shall terminate his employment for Good Reason, then and, with respect to the payments and benefits described in clause (ii), (iv), and (v) below, only
if Executive shall have executed and not revoked a release of claims in a form satisfactory to the Company: 
 (i) the Company shall pay to
Executive in a lump sum in cash within 60 days after the Date of Termination, the exact payment date to be determined by the Company (or such later date as may be required pursuant to Section 17 hereof), the sum of (1) Executive’s
Base Salary through the Date of Termination to the extent not theretofore paid, (2) the Annual Bonus earned by the Executive for the fiscal year immediately prior to the year in which the Date of Termination occurs, if any, to the extent not
theretofore paid, and (3) any accrued but unused vacation pay to the extent not theretofore paid (the sum of the amounts described in clauses (1), (2) and (3) shall be hereinafter referred to as the “Accrued Obligations”);
and 
 (ii) the Company shall pay to Executive twelve (12) months of severance pay based on Executive’s Base Salary as of the
Date of Termination (the “Severance Pay”). The foregoing Severance Pay shall be paid in equal installments over 

  
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the severance period in accordance with the Company’s usual payroll schedule, commencing on the date that the release referred to above may no longer be revoked (or such later date as may be
required pursuant to Section 17); and 
 (iii) to the extent not theretofore paid or provided, the Company shall timely pay or provide
to Executive any other amounts or benefits required to be paid or provided or which Executive is entitled to receive under any plan, program, policy or practice or contract or agreement of the Company and its affiliated companies (such other amounts
and benefits shall be hereinafter referred to as the “Other Benefits”); and 
 (iv) any vested portion of stock options granted
to Executive by the Company shall remain exercisable by the Executive for a period of one year following the Date of Termination (or, if earlier, the normal expiration date of such stock options), and any unvested portions of stock options granted
to Executive by the Company shall lapse and be forfeited without consideration as of the Date of Termination; and 
 (v) any unvested
Miletone Stock Options shall continue for a period of three (3) months after the Date of Termination. To the extent that a milestone is achieved during such three-month period, the Milestone Stock Options relating to such milestone shall vest
and remain exerciseable by the Executive for a period of one year following the Date of Termination (or, if earlier, the normal expiration date of such stock options). 

(b) Death or Disability. If Executive’s employment is terminated by reason of Executive’s death or Disability during the
Employment Period, this Agreement shall terminate without further obligations to Executive or Executive’s legal representatives under this Agreement, other than for payment of Accrued Obligations and the timely payment or provision of Other
Benefits. Accrued Obligations shall be paid to Executive or Executive’s estate or beneficiaries, as applicable, in a lump sum in cash within 60 days after the Date of Termination. With respect to the provision of Other Benefits, the term
“Other Benefits” as used in this Section 7(b) shall include without limitation, and Executive or Executive’s estate and/or beneficiaries shall be entitled to receive, benefits under such plans, programs, practices and policies
relating to death, disability or retirement benefits, if any, as are applicable to Executive on the Date of Termination. In addition, in the event of such a termination, and provided that Executive or his estate or beneficiaries, if applicable,
executes and does not revoke a release of claims in a form acceptable to the Company: 
 (i) any vested portion of stock options granted to
Executive by the Company shall remain exercisable by the Executive and/or his estate or beneficiaries for a period of one year following the Date of Termination (or, if earlier, the normal expiration date of such stock options), and any unvested
portion of stock options (other than Milestone Stock Options) granted to Executive by the Company shall lapse and be forfeited without consideration as of the Date of Termination; and 

  
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 (ii) any unvested Milestone Stock Options shall continue for a period of three (3) months
after the Date of Termination. To the extent that a milestone is achieved during such three-month period, the Milestone Stock Options relating to such milestone shall vest and remain exerciseable by the Executive and/or his estate or beneficiaries
for a period of one year following the Date of Termination (or, if earlier, the normal expiration date of such stock options); and 
 (iii)
if Executive’s employment terminates due to death, the Compensation Committee of the Board shall determine the extent to which any of the performance goals and objectives established pursuant to Section 5(b)(i) above were met as of the
time Executive’s death. If, based on that determination, the Compensation Committte of the Board determines that a bonus is due, the Company shall pay Executive’s estate an amount equal to such bonus, pro-rated for the portion of the
fiscal year elapsed as of the time of Executive’s death. 
 (c) Termination by the Company for Cause; Resignation by Executive Other
than for Good Reason. If Executive’s employment shall be terminated for Cause during the Employment Period, or Executive shall resign other than for Good Reason during the Employment Period, this Agreement shall terminate without further
obligations to Executive, other than for payment by the Company to the Executive of Accrued Obligations and the timely payment or provision of Other Benefits. Accrued Obligations shall be paid to Executive in a lump sum in cash within 60 days after
the Date of Termination. In addition, in the event of such a termination, any unvested equity awards shall lapse and be forfeited without consideration on the Date of Termination. 

(d) Expiration of Employment Period. If Executive’s employment shall be terminated by the Company or by the Executive upon the
normal expiration of the Employment Period as provided for in Section 3 hereof, this Agreement shall terminate without further obligations to Executive, other than for payment of Accrued Obligations and the timely payment or provision of Other
Benefits. Accrued Obligations shall be paid to Executive in a lump sum in cash within 60 days after the Date of Termination. In addition, in the event of such a termination, and provided that Executive or his estate or beneficiaries, if applicable,
executes and does not revoke a release of claims in a form acceptable to the Company, any vested portion of stock options granted to Executive by the Company shall remain exercisable by the Executive and/or his estate or beneficiaries for a period
of one year following the Date of Termination (or, if earlier, the normal expiration date of such stock options), and any unvested portions of stock options granted to Executive by the Company shall lapse and be forfeited without consideration as of
the Date of Termination. In addition, in the event of such a termination, and provided that Executive or his estate or beneficiaries, if applicable, executes a release of claims in a form acceptable to the Company, any unvested Milestone Stock
Options shall continue for a period of three (3) months after the Date of Termination. To the extent that a milestone is achieved during such three-month period, the Milestone Stock Options relating to such milestone shall vest and remain
exerciseable by the Executive for a period of one year following the Date of Termination (or, if earlier, the normal expiration date of such stock options). 

  
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 (e) Termination of the Agreement by the Company prior to the Start Date without Cause. If,
during the time period between the Effective Date and the Start Date, the Company shall terminate this Agreement without Cause, and only if Executive shall have executed and not revoked a release of claims in a form satisfactory to the Company, then
the Company shall pay to Executive twelve (12) months of severance pay based on Executive’s anticipated Base Salary as of the Start Date. The foregoing shall be paid in equal installments over a twelve (12) month period in accordance
with the Company’s usual payroll schedule, commencing on the date that the release referred to above may no longer be revoked (or such later date as may be required pursuant to Section 17). 

8. Change in Control. 

(a) Definition. For the purposes of this Agreement, a “Change in Control” shall mean: 

(i) the acquisition by an individual, entity or group (within the meaning of Section 13(d)(3) or 14(d)(2) of the 1934 Act)
of beneficial ownership of any capital stock of the Company if, after such acquisition, such individual, entity or group beneficially owns (within the meaning of Rule 13d-3 promulgated under the 1934 Act) 30% or more of either (x) the
then-outstanding shares of common stock of the Company (the “Outstanding Company Common Stock”) or (y) the combined voting power of the then-outstanding securities of the Company entitled to vote generally in the election of directors
(the “Outstanding Company Voting Securities”); provided, however, that for purposes of this subsection (i), the following acquisitions shall not constitute a Change in Control: (A) any acquisition directly from the
Company (excluding an acquisition pursuant to the exercise, conversion or exchange of any security exercisable for, convertible into or exchangeable for common stock or voting securities of the Company, unless the individual, entity or group
exercising, converting or exchanging such security acquired such security directly from the Company or an underwriter or agent of the Company), (B) any acquisition by any employee benefit plan (or related trust) sponsored or maintained by the
Company or any corporation controlled by the Company, or (C) any acquisition by any corporation pursuant to a Business Combination (as defined below) which complies with clauses (x) and (y) of subsection (iii) of this definition;
or 
 (ii) such time as the Continuing Directors (as defined below) do not constitute a majority of the Board (or, if
applicable, the Board of Directors of a successor corporation to the Company), where the term “Continuing Director’ means at any date a member of the Board (x) who was a member of the Board on the Start Date of this Agreement or
(y) who was nominated or elected subsequent to such date by at least a majority of the directors who were Continuing Directors at the time of such nomination or election or whose election to the Board was recommended or endorsed by at least a
majority of the directors who were Continuing Directors at the time of such nomination or election; provided, 

  
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however, that there shall be excluded from this clause (y) any individual whose initial assumption of office occurred as a result of an actual or threatened election contest with
respect to the election or removal of directors or other actual or threatened solication of proxies or consents, by or on behalf of a person other than the Board; or 

(iii) the consummation of a merger, consolidation, reorganization, recapitalization or share exchange involving the Company or
a sale or other disposition of all or substantially all of the assets of the Company (a “Business Combination”), unless, immediately following such Business Combination, each of the following two conditions is satisfied: (x) all or
substantially all of the individuals and entities who were the beneficial owners of the Outstanding Company Common Stock and Outstanding Company Voting Securities immediately prior to such Business Combination beneficially own, directly or
indirectly, more than 50% of the then-outstanding shares of common stock and the combined voting power of the then-outstanding securities entitled to vote generally in the election of directors, respectively, of the resulting or acquiring
corporation in such Business Combination (which shall include, without limitation, a corporation which as a result of such transaction owns the Company or substantially all of the Company’s assets either directly or through one or more
subsidiaries) (such resulting or acquiring corporation is referred to herein as the “Acquiring Corporation”) in substantially the same proportions as their ownership of the Outstanding Company Common Stock and Outstanding Company Voting
Securities, respectively, immediately prior to such Business Combination and (y) no Person (excluding the Acquiring Corporation or any employee benefit plan (or related trust) maintained or sponsored by the Company or by the Acquiring
Corporation) beneficially owns, directly or indirectly, 30% or more of the then-outstanding shares of common stock of the Acquiring Corporation, or of the combined voting power of the then-outstanding securities of such corporation entitled to vote
generally in the election of directors (except to the extent that such ownership existed prior to the Business Combination). 
 (b)
Severance Benefits. Upon the occurrence of a Change in Control, if, within one year after the effective date of the Change in Control, Executive’s employment is terminated by the Company or the successor corporation to the Company
without Cause, or Executive resigns for Good Reason (as defined above in section 6(d)), then in addition to payment of the Accrued Obligations and Other Benefits, and provided that Executive shall have executed and not revoked a general release of
claims in a form satisfactory to the Company: (i) the Executive shall receive a cash payment equal to the sum of (A) 150% of the Executive’s annual Base Salary as of the Date of Termination or, if higher, at the rate in effect
immediately prior to a Change in Control, and (B) 150% of the Annual Bonus earned by the Executive for the fiscal year immediately prior to the year in which the Date of Termination occurs, if any, payable in a lump sum within sixty
(60) days following the Date of Termination; and (ii) the Executive shall receive a cash payment equal to the total monthly premium payment (both the Company’s portion and the Executive’s portion of such premium) under the
Company’s group healthcare plan as 

  
 11 








 
in effect on the Date of Termination multiplied by eighteen (18), payable in a lump sum within sixty (60) days following the Date of Termination. The foregoing shall be in lieu of and not in
addition to any amounts that Executive would otherwise be entitled to receive under Section 7 hereof in the event of a termination without Cause or resignation for Good Reason. 

9. Non-exclusivity of Rights. Nothing in this Agreement shall prevent or limit Executive’s continuing or future participation in
any employee benefit plan, program, policy or practice provided by the Company or its affiliated companies and for which Executive may qualify, except as specifically provided herein. Amounts that are vested benefits or which Executive is otherwise
entitled to receive under any plan, policy, practice or program of the Company or any of its affiliated companies at or subsequent to the Date of Termination shall be payable in accordance with such plan, policy, practice or program except as
explicitly modified by this Agreement. 
 10. No Mitigation. In no event shall Executive be obligated to seek other employment or
take any other action by way of mitigation of the severance amounts payable to Executive under any of the provisions of this Agreement and such amounts shall not be reduced whether or not Executive obtains other employment. 

11. Mandatory Reduction of Payments in Certain Events. 

(a) Anything in this Agreement to the contrary notwithstanding, in the event it shall be determined that any payment or distribution by the
Company to or for the benefit of Executive (whether paid or payable or distributed or distributable pursuant to the terms of this Agreement or otherwise) (a “Payment”) would be subject to the excise tax imposed by Section 4999 of the
Code (the “Excise Tax”), then, prior to the making of any Payment to Executive, a calculation shall be made comparing (i) the net benefit to Executive of the Payment after payment of the Excise Tax, to (ii) the net benefit to
Executive if the Payment had been limited to the extent necessary to avoid being subject to the Excise Tax. If the amount calculated under (i) above is less than the amount calculated under (ii) above, then the Payment shall be limited to
the extent necessary to avoid being subject to the Excise Tax (the “Reduced Amount”). The reduction of the Payments due hereunder, if applicable, shall be made in such a manner as to maximize the economic present value of all Payments
actually made to Executive, determined by the Determination Firm (as defined in Section 11(b) below) as of the date of the Change in Control using the discount rate required by Section 280G(d)(4) of the Code. 

(b) The determination of whether an Excise Tax would be imposed, the amount of such Excise Tax, and the calculation of the amounts referred to
Section 12(a)(i) and (ii) above shall be made by an independent, nationally recognized accounting firm or compensation consulting firm mutually acceptable to the Company and Executive (the “Determination Firm”) which shall
provide detailed supporting calculations. Any determination by the Determination Firm shall be binding upon the Company and Executive. As a result of the uncertainty in the application of Section 4999 of the Code at the time of the initial
determination by the Determination Firm hereunder, it is possible 

  
 12 








 
that Payments which Executive was entitled to, but did not receive pursuant to Section 11(a), could have been made without the imposition of the Excise Tax (“Underpayment”). In
such event, the Determination Firm shall determine the amount of the Underpayment that has occurred and any such Underpayment shall be promptly paid by the Company to or for the benefit of Executive, but no later than December 31 of the year
after the year in which the Underpayment is determined to exist. 
 (c) In the event that the provisions of Code Section 280G and 4999
or any successor provisions are repealed without succession, this Section 11 shall be of no further force or effect. 
 12.
Restrictions on Conduct of Executive. 
 (a) General. Executive and the Company understand and agree that the purpose of the
provisions of this Section 12 is to protect the legitimate business interests of the Company, as more fully described below, and is not intended to impair or infringe upon Executive’s right to work, earn a living, or acquire and possess
property from the fruits of his labor. Executive hereby acknowledges that Executive has received good and valuable consideration for the post-employment restrictions set forth in this Section 12 in the form of the compensation and benefits
provided for herein. Executive hereby further acknowledges that the post-employment restrictions set forth in this Section 12 are reasonable and that they do not, and will not, unduly impair his ability to earn a living after the termination of
this Agreement. 
 In addition, the parties acknowledge: (A) that Executive’s services under this Agreement require special
expertise and talent in the provision of Competitive Services and that Executive will have substantial contacts with customers, suppliers, advertisers and vendors of the Company; (B) that pursuant to this Agreement, Executive will be placed in
a position of trust and responsibility and he will have access to a substantial amount of Confidential Information and Trade Secrets and that the Company is placing him in such position and giving him access to such information in reliance upon his
agreement to comply with the obligations set forth in this Section 12; (C) that due to his management duties, Executive will be the repository of a substantial portion of the goodwill of the Company and would have an unfair advantage in
competing with the Company; (D) that due to Executive’s special experience and talent, the loss of Executive’s services to the Company under this Agreement cannot reasonably or adequately be compensated solely by damages in an action
at law; (E) that Executive is capable of competing with the Company; and (F) that Executive is capable of obtaining gainful, lucrative and desirable employment that does not violate the restrictions contained in this Agreement. 

Therefore, subject to the limitations of reasonableness imposed by law, Executive shall be subject to the restrictions set forth in this
Section 12. 

  
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 (b) Definitions. The following capitalized terms used in this Section 12 shall have
the meanings assigned to them below, which definitions shall apply to both the singular and the plural forms of such terms: 

“Competitive Services” means services involving the acquisition, development or commercialization of oral iron pharmaceutical
products that are the same as or substantially similar to the oral iron pharmaceutical products offered or provided by the Company or are in competition with the Company’s products. 

“Confidential Information” means all data and information relating to the business of the Company that is disclosed to
Executive or of which Executive becomes aware as a consequence of his employment and that has value to the Company and is not generally disclosed to those not employed or otherwise engaged by the Company. “Confidential Information” shall
include, but is not limited to, financial plans and data concerning the Company; management planning information; business plans; operational methods; market studies; marketing plans or strategies; product development techniques or plans; customer
lists; details of customer contracts; current and anticipated customer requirements; past, current and planned research and development; business acquisition plans; and new personnel acquisition plans. “Confidential Information” shall not
include information that has become generally available to the public by the act of one who has the right to disclose such information without violating any right or privilege of the Company. This definition shall not limit any definition of
“confidential information” or any equivalent term under state or federal law. 
 “End Date” means the last day of
Executive’s employment with the Company for any reason whatsoever. 
 “Person” means any individual or any
corporation, partnership, joint venture, limited liability company, association or other entity or enterprise. 
 “Principal or
Representative” means a principal, owner, partner, shareholder, joint venturer, investor, member, trustee, director, officer, manager, employee, agent, representative or consultant. 

“Protected Customers” means any Person to whom the Company sold its products or services or solicited to sell its products or
services during the Employment Period and (a) with whom Executive dealt on behalf of the Company; (b) whose dealings with the Company were coordinated or supervised by Executive; or (c) about whom Executive obtained Trade Secrets or
Confidential Information in the ordinary course of business as a result of his employment. 
 “Protected Employees and
Contractors” means employees and independent contractors of the Company who were employed or engaged by the Company at any time within six (6) months prior to the End Date. 

  
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 “Protected Providers” means any service provider, vendor or supplier with whom
the Company conducted business or solicited to conduct business during the twelve (12) months prior to the End Date. 

“Restricted Period” means the Employment Period and the one (1) year period following the End Date. 

“Restricted Territory” means countries where Keryx has the right to market Zerenex, including, but not limited to, North
America, European Union, Eastern Europe, Central and Latin America. 
 “Restrictive Covenants” means the restrictive
covenants contained in Section 12(c) hereof. 
 “Trade Secret” means all information, without regard to form,
including, but not limited to, technical or nontechnical data, a formula, a pattern, a compilation, a program, a device, a method, a technique, a drawing, a process, financial data, financial plans, product plans, distribution lists or a list of
actual or potential customers, advertisers or suppliers which is not commonly known by or available to the public and which information: (A) derives economic value, actual or potential, from not being generally known to, and not being readily
ascertainable by proper means by, other persons who can obtain economic value from its disclosure or use; and (B) is the subject of efforts that are reasonable under the circumstances to maintain its secrecy. This definition shall not limit any
definition of “trade secret” or any equivalent term under state or federal law. 
 (c) Restrictive Covenants. 

(i) Restriction on Disclosure and Use of Confidential Information and Trade Secrets. Executive understands and agrees
that the Confidential Information and Trade Secrets constitute valuable assets of the Company, and may not be converted to Executive’s own use. Accordingly, Executive hereby agrees that throughout the Employment Period and at all times after
the End Date, for so long as the information at issue remains either Confidential Information or a Trade Secret, Executive will not, directly or indirectly, reveal, divulge, or disclose to any Person not expressly authorized by the Company any
Confidential Information or Trade Secrets and will not, directly or indirectly, use or make use of any Confidential Information or Trade Secrets in connection with any business activity other than that of the Company. 

Anything herein to the contrary notwithstanding, Executive shall not be restricted from disclosing or using Confidential
Information or Trade Secrets that are required to be disclosed by law, court order or other valid legal process; provided, however, that in the event disclosure is required by law, Executive shall provide the Company with prompt,
written notice of such requirement so that the Company may seek an appropriate protective order prior to any such required disclosure by Executive. 

  
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 (ii) Non-Solicitation of Protected Employees and Contractors. Executive
understands and agrees that the relationship between the Company and each of its Protected Employees and Contrators constitutes a valuable asset of the Company and may not be converted to Executive’s own use. Accordingly, Executive hereby
agrees that, during the Restricted Period, Executive shall not, directly or indirectly, on Executive’s own behalf or as a Principal or Representative of any Person or otherwise, solicit or induce any Protected Employee or Contractor to
terminate his or her relationship with the Company or to enter into an employment, consulting or similar relationship with any other Person . 

(iii) Non-Solicitation of Protected Customers. Executive understands and agrees that the relationship between the
Company and each of its Protected Customers constitutes a valuable asset of the Company and may not be converted to Executive’s own use. Accordingly, Executive hereby agrees that, during the Restricted Period, Executive shall not, directly or
indirectly, on Executive’s own behalf or as a Principal or Representative of any Person, solicit, divert, take away or attempt to solicit, divert or take away a Protected Customer for the purpose of providing or selling Competitive Services.

 (iv) Non-Interference with Protected Providers. Executive understands and agrees that the relationship between the
Company and each of its Protected Providers constitutes a valuable asset of the Company and may not be converted to Executive’s own use. Executive hereby agrees that, during the Restricted Period, Executive shall not, directly or indirectly,
solicit or induce or attempt to solicit or induce any Protected Provider to cease, reduce or alter its relationship with the Company. 

(v) Non-Competition with the Company. In consideration of the compensation and benefits being paid and to be paid by the
Company to Executive hereunder and the equity awards granted by the Company, Executive hereby agrees that, during the Restricted Period, Executive will not, directly or indirectly, engage in or provide Competitive Services within the Restricted
Territory, whether on his own behalf or as a Principal or Representative of any other Person, in a capacity that involves the exercise of any job duties or responsibilities the same as or similar to the job duties and responsibilities executed by
Executive on behalf of the Company; provided, however, that the foregoing shall not be deemed to prohibit the ownership by Executive of not more than five percent (5%) of any class of securities of any corporation having a class
of securities registered pursuant to the Exchange Act, which investment does not exceed 3% of Executive’s net worth. 

  
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 (d) Enforcement of Restrictive Covenants. 

(i) Rights and Remedies Upon Breach. In the event Executive breaches, or threatens to commit a breach of, any of the
provisions of the Restrictive Covenants, the Company shall have the right and remedy to enjoin, preliminarily and permanently, without the necessity of posting bond, Executive from violating or threatening to violate the Restrictive Covenants and to
have the Restrictive Covenants specifically enforced by any court of competent jurisdiction, it being agreed that any breach or threatened breach of the Restrictive Covenants would cause irreparable injury to the Company and that money damages would
not provide an adequate remedy to the Company. Executive further understands and agrees that the Company shall be entitled to require Executive to pay the reasonable costs and attorneys’ fees incurred by the Company in enforcing the terms of
the Restrictive Covenants. The foregoing rights and remedies shall be in addition to, and not in lieu of, any other rights and remedies available to the Company at law or in equity. 

(ii) Severability of Covenants. The parties hereunder agree that the Restrictive Covenants shall be considered and
construed as separate and independent covenants. Should any part or provision of any Restrictive Covenant be held invalid, void or unenforceable in any court of competent jurisdiction, such invalidity, voidness or unenforceability shall not render
invalid, void or unenforceable any other part or provision of this Agreement. 
 (iii) Reformation. The parties
hereunder agree that it is their intention that the Restrictive Covenants be enforced in accordance with their terms to the maximum extent possible under applicable law. The parties further agree that, in the event any court of competent
jurisdiction shall find that any provision hereof is not enforceable in accordance with its terms, the court shall reform the Restrictive Covenants such that they shall be enforceable to the maximum extent permissible at law. 

13. Invention Assignment. Executive agrees that he will promptly and fully disclose in writing to the Company all inventions, designs,
concepts, discoveries, developments, improvements, and innovations, whether or not they merit patent, trademark or copyright protection, conceived of, designed or reduced to practice by Executive, either solely or in concert with others, at any time
during his employment, which (i) relate in any manner, whether at the time of conception, design or reduction to practice, to the Company’s business or its actual or demonstrably anticipated research or development; (ii) result from
any work performed by Executive on behalf of the Company; or (iii) result from the use of the Company’s equipment, supplies, facilities, Confidential Information or Trade Secrets (collectively referred to as “Inventions”). 

Executive acknowledges and agrees that he will keep and maintain adequate written records of all such Inventions at all stages thereof in the
form of notes, sketches, drawings, photographs, printouts, and/or reports relating thereto. These records are and 

  
 17 








 
shall remain the property of, and be available to, the Company or its designee(s) at all times. Executive further acknowledges that all such Inventions shall be the exclusive property of the
Company. As such, Executive hereby assigns his entire right, title, and interest in and to all such Inventions to the Company or its designee(s). Executive will, at the Company’s request and expense, execute specific transfers, assignments,
documents or other instruments and take such further action as may be considered necessary by the Company at any time during or subsequent to Executive’s employment to obtain and defend any intellectual property rights and vest complete title
and ownership to such Inventions to the Company or its designee(s). 
 14. Return of Materials. Executive agrees that he will not
retain or destroy, and will immediately return to the Company on or prior to his last day of employment, or at any other time the Company requests such return, any and all property of the Company that is in his possession or subject to his control,
including, but not limited to, keys, credit and identification cards, equipment, client files and information, and all Confidential Information and Trade Secrets. Executive will not make, distribute or retain copies of any such information or
property. Executive agrees that he will reimburse the Company for all of its costs, including reasonable attorneys’ fees, of recovering the above materials and otherwise enforcing compliance with this provision if he does not return the
materials in compliance with this provision. 
 15. Successors and Assigns. 

(a) This Agreement is personal to Executive and shall not be assignable by Executive. This Agreement shall inure to the benefit of and be
enforceable by Executive’s legal representatives. 
 (b) The Company may assign this Agreement without the consent of Executive. This
Agreement shall inure to the benefit of and be binding upon the Company and its successors and assigns. 
 16. Cooperation. Both
during and after his employment, Executive shall provide Executive’s reasonable cooperation in connection with any action or proceeding (or any appeal from any action or proceeding) which relates to events occurring during Executive’s
employment hereunder. The Company shall reimburse Executive for any reasonable out-of-pocket expenses incurred in connection with Executive’s performance of obligations under this Section 16 at the request of the Company. If Executive is
entitled to be paid or reimbursed for any expenses under this Section 16, the amount reimbursable in any one calendar year shall not affect the amount reimbursable in any other calendar year, and the reimbursement of an eligible expense must be
made no later than December 31 of the year after the year in which the expense was incurred. Executive’s obligations under this Section 16. 

  
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 17. Code Section 409A . 

(a) General. This Agreement shall be interpreted and administered in a manner so that any amount or benefit payable hereunder shall be
paid or provided in a manner that is either exempt from or compliant with the requirements Section 409A of the Code and applicable Internal Revenue Service guidance and Treasury Regulations issued thereunder (and any applicable transition
relief under Section 409A of the Code). Nevertheless, the tax treatment of the benefits provided under the Agreement is not warranted or guaranteed. Neither the Company nor its directors, officers, employees or advisers shall be held liable for
any taxes, interest, penalties or other monetary amounts owed by Executive as a result of the application of Section 409A of the Code. 

(b) Definitional Restrictions. Notwithstanding anything in this Agreement to the contrary, to the extent that any amount or benefit
that would constitute non-exempt “deferred compensation” for purposes of Section 409A of the Code would otherwise be payable or distributable hereunder, or a different form of payment would be effected, by reason of a Change in
Control or the Executive’s Disability or termination of employment, such amount or benefit will not be payable or distributable to the Executive, and/or such different form of payment will not be effected, by reason of such circumstance unless
(i) the circumstances giving rise to such Change in Control, Disability or termination of employment, as the case may be, meet any description or definition of “change in control event,” “disability” or “separation from
service,” as the case may be, in Section 409A of the Code and applicable regulations (without giving effect to any elective provisions that may be available under such definition), or (ii) the payment or distribution of such amount or
benefit would be exempt from the application of Section 409A of the Code by reason of the short-term deferral exemption or otherwise. This provision does not prohibit the vesting of any amount upon a Change in Control, Disability or
termination of employment, however defined. If this provision prevents the payment or distribution of any amount or benefit, such payment or distribution shall be made on the date, if any, on which an event occurs that constitutes a
Section 409A-compliant “change in control event,” “disability” or “separation from service,” as the case may be, or such later date as may be required by subsection (c) below. If this provision prevents the
application of a different form of payment of any amount or benefit, such payment shall be made in the same form as would have applied absent such designated event or circumstance. 

(c) Six-Month Delay in Certain Circumstances. Notwithstanding anything in this Agreement to the contrary, if any amount or benefit that
would constitute non-exempt “deferred compensation” for purposes of Section 409A of the Code would otherwise be payable or distributable under this Agreement by reason of Executive’s separation from service during a period in
which he is a Specified Employee (as defined below), then, subject to any permissible acceleration of payment by the Company under Treas. Reg. Section 1.409A-3(j)(4)(ii) (domestic relations order), (j)(4)(iii) (conflicts of interest), or
(j)(4)(vi) (payment of employment taxes): 
 (i) the amount of such non-exempt deferred compensation that would otherwise be
payable during the six-month period immediately following Executive’s separation from service will be accumulated through and paid or provided on the first day of the seventh month following Executive’s separation from service (or, if
Executive dies during such period, within 30 days after Executive’s death) (in either case, the “Required Delay Period”); and 

  
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 (ii) the normal payment or distribution schedule for any remaining payments or
distributions will resume at the end of the Required Delay Period. 
 For purposes of this Agreement, the term “Specified
Employee” has the meaning given such term in Code Section 409A and the final regulations thereunder: provided, however, that the Company’s Specified Employees and its application of the six-month delay rule of Code
Section 409A(a)(2)(B)(i) shall be determined in accordance with rules adopted by the Board or a committee thereof, which shall be applied consistently with respect to all nonqualified deferred compensation arrangements of the Company, including
this Agreement. 
 18. Miscellaneous. 

(a) Governing Law. This Agreement shall be governed by and construed in accordance with the laws of the State of New York, without
reference to principles of conflict of laws. 
 (b) Captions. The captions of this Agreement are not part of the provisions hereof
and shall have no force or effect. 
 (c) Amendments. This Agreement may not be amended or modified otherwise than-by a written
agreement executed by the parties hereto or their respective successors and legal representatives. 
 (d) Notices. All notices and
other communications hereunder shall be in writing and shall be given by hand delivery to the other party, email, or by registered or certified mail, return receipt requested, postage prepaid, addressed as follows: 

 

			
	If to Executive:	  	Gregory P. Madison
		  	10 Deerfield Drive
		  	Milton, MA 02186
		
	If to the Company:	  	Keryx Biopharmaceuticals, Inc.
		  	750 Lexington Ave.
		  	20th Floor
		  	New York, NY 10022
		  	Attention: CEO


  
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 or to such other address as either party shall have furnished to the other in writing in accordance herewith.
Notice and communications shall be effective when actually received by the addressee. 
 (e) Severability. The invalidity or
unenforceability of any provision of this Agreement shall not affect the validity or enforceability of any other provision of this Agreement. 

(f) Withholding. The Company may withhold from any amounts payable under this Agreement such Federal, state, local or foreign taxes as
shall be required to be withheld pursuant to any applicable law or regulation. 
 (g) Waivers. Executive’s or the Company’s
failure to insist upon strict compliance with any provision of this Agreement or the failure to assert any right Executive or the Company may have hereunder, shall not be deemed to be a waiver of such provision or right or any other provision or
right of this Agreement. 
 (h) Entire Agreement. This Agreement contains the entire agreement between the Company and Executive with
respect to the subject matter hereof and, from and after the Effective Date, this Agreement shall supersede any other agreement between the parties with respect to the subject matter hereof. 

(i) Arbitration. In the event that a dispute arises between the parties regarding the formation, interpretation and/or the terms and
conditions of this Agreement and/or if there arises any other claim or legal dispute between the parties with respect to Executive’s employment or the termination thereof (the “Dispute”), the complaining party shall submit the Dispute
in writing to the other party for resolution. If the Dispute is not resolved between the parties within thirty (30) days of the date the Dispute is submitted in writing to the other party, the complaining party must make a demand for final and
binding arbitration in New York, New York before an arbitrator pursuant to the Employment Arbitration Rules of the American Arbitration Association in effect at the time of the Dispute (the “AAA Rules”) if the complaining party wishes to
pursue the Dispute (“Demand for Arbitration”). Provided, however, that the foregoing shall not preclude (x) the Company from immediately seeking injunctive or other equitable relief in a court of competent jurisdiction in
connection with Executive’s breach or threatened breach of the Restrictive Covenants or the provisions set forth in Sections 13 or 14 of this Agreement or (y) the Executive from immediately seeking in a court of competent jurisdiction
injunctive or other equitable relief or specific performance of his right to be paid during the pendency of the Dispute. The parties expressly understand that by agreeing to this arbitration provision, they are agreeing to waive any rights to a
civil action and/or jury trial regarding any Disputes between them. The parties shall share all costs, filing fees, and administrative fees for the arbitration equally as they come due; the parties shall be responsible for their own attorneys’
fees, witness fees, and travel costs. Provided, however, that in the event a Dispute arises following a Change in Control, then the Company or the successor corporation to the Company shall pay to the Executive, within thirty (30) days
after any such fees or expenses are incurred and substantiated to the Company or the successor corporation to the Company, all costs, reasonable 

  
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attorney’s fees, legal fees, filing fees, administrative fees for the arbitration, and expenses incurred by the Executive as a result of or in connection with any Dispute, including all such
fees and expenses, if any, incurred in contesting or disputing the termination of Executive’s employment with the Company or the successor corporation to the Company or in seeking to obtain or enforce any right or benefit provided by this
Agreement (other than any such fees or expenses incurred in connection with any such claim which is determined by arbitration, in accordance with this section, to be frivolous) or in connection with any tax audit or proceeding to the extent
attributable to the application of Section 409A of the Code, to any payment or benefit provided by the Agreement. The arbitrator shall have the authority to rule on any and all issues properly presented in the Demand for Arbitration and/or
pursuant to the AAA Rules and may award any and all relief provided under applicable law. The arbitrator’s award may be enforced, vacated, modified or corrected as set forth in the Federal Arbitration Act, 9 U.S.C § 1 et seq. This
Agreement shall be governed by the Federal Arbitration Act, 9 U.S.C § 1 et seq., as amended, and the applicable rules of the American Arbitration Association set forth in this Agreement. This Agreement shall be binding upon, and shall inure to
the benefit of Executive, the Company and their respective permitted successors and assigns. 
 (j) Timing of Release. Whenever in
this Agreement a payment or benefit is conditioned on the Executive’s execution of a release of claims, the Company shall provide such release to the Executive promptly following the Date of Termination, and such release must be executed and
all revocation periods shall have expired in accordance with terms set forth in the release, but in no case later than sixty (60) days after the Date of Termination; failing which such payment or benefit shall be forfeited. If such payment or
benefit constitutes non-exempt “deferred compensation,” then, subject to Section 17(c) above, such payment or benefit (including any installment payments) that would have otherwise been payable during such 60-day period shall be
accumulated and paid on the 60th day after the Date of Termination provided such release shall have been executed and such revocation periods shall have expired. If such payment or benefit is exempt from Section 409A of the Code, the Company
may elect to make or commence payment at any time during such 60-day period. 
 (k) Counterparts; Scanned Signatures. This Agreement
may be executed in one or more counterparts, all of which shall be considered one and the same agreement, and shall become a binding agreement when one or more counterparts have been signed by each party and delivered to the other party. A
counterpart executed and delivered by PDF or facsimile shall be sufficient for the Agreement to become effective. 

  
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 IN WITNESS WHEREOF, Executive has hereunto set Executive’s hand and, pursuant to the
authorization from the Board, the Company has caused these presents to be executed in its name on its behalf, all as of the day and year first above written. 

 

	
	 /s/ Gregory Madison

	Gregory P. Madison
	
	KERYX BIOPHARMACEUTICALS, INC.
	
	 By: /s/ Ron Bentsur

	Print: Ron Bentsur
	Its: CEO



  
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