Document:

Exhibit

Exhibit 10.10

KERYX BIOPHARMACEUTICALS, INC.
RETENTION BONUS AWARD AGREEMENT
This Retention Bonus Award Agreement (this “Agreement”) is made and entered into on May 1, 2018 (the “Effective Date”), between Keryx Biopharmaceuticals, Inc. (the “Company”) and Christine Carberry (“Employee”).
WHEREAS, Employee occupies a key position with the Company and in order to ensure the continued effective conduct of the Company’s business, the Company desires to assure itself of the continuous services of Employee;
WHEREAS, Employee is a party to an employment agreement with the Company dated January 6, 2017 (as amended, the “Employment Agreement”); and
WHEREAS, the Company desires to offer Employee a retention bonus award to incentivize Employee to remain employed with the Company.
NOW, THEREFORE, in consideration of the mutual covenants and agreements contained herein, the parties hereby agree as follows:
		
	1.
	Retention Bonus Award.  Subject to Employee’s continued employment with the Company, the Company shall pay Employee a retention award in the amount of One Hundred and Fifty Thousand Dollars ($150,000) (the “Retention Award”) on March 1, 2019 (the “Payment Date”), subject to any and all applicable federal, state, local, foreign and/or other withholding taxes and all other authorized payroll deductions.  Employee shall no longer be eligible for the Retention Award if Employee’s employment is terminated for any reason prior to the Payment Date. Notwithstanding the foregoing: (a) in the event that the Company terminates Employee’s employment without Cause (as defined in the Employment Agreement) or Employee resigns from employment with Good Reason (as defined in the Employment Agreement) prior to the Payment Date, then the Company shall pay Employee the Retention Award on the Payment Date; and (b) in the event that a Change in Control (as defined in the Employment Agreement) occurs prior to the Payment Date, then Employee shall become eligible for the Retention Award, and the Retention Award will be paid to Employee on the day immediately preceding the occurrence of a Change in Control.

		
	2.
	Change in Control Bonus Payment.  In the event that a Change in Control (as defined in the Employment Agreement) occurs prior to the Payment Date and the Company terminates Employee’s employment without Cause (as defined in the Employment Agreement) or Employee resigns from employment with Good Reason (as defined in the Employment Agreement) within twelve (12) months following the Change in Control, then provided that Executive shall have 

executed and not revoked a general release of claims in a form satisfactory to the Company in accordance with the Employment Agreement, Employee shall become eligible for a bonus payment (the “Change in Control Bonus Payment”) equal to the target discretionary Annual Bonus (as defined in the Employment Agreement) for which Employee is eligible under the Employment Agreement (i.e., the percent of Base Salary stated in the Employment Agreement).  Such Change in Control Bonus Payment shall be subject to any and all applicable federal, state, local, foreign and/or other withholding taxes and all other authorized payroll deductions. The Employee expressly acknowledges and agrees that the Change in Control Bonus Payment is in lieu of, and if triggered shall be a full substitute for, any severance benefit described in Section 8(b)(i)(B) of the Employment Agreement.  In the event that Employee is eligible for the Change in Control Bonus Payment herein, Employee shall not be eligible for or entitled to any severance benefit described in Section 8(b)(i)(B) of the Employment Agreement.
		
	3.
	No Effect on Severance and Other Benefits.  Other than as described in Section 2 above, this Agreement shall not affect Employee’s eligibility or entitlement to receive any benefits payable to Employee under any severance, change of control or similar plan, policy or agreement with the Company.

		
	4.
	Other Rights and Agreements.  This Agreement does not create any employment rights not specifically set forth herein with respect to Employee.  Employee’s employment remains at-will and can be terminated by the Company at any time and for any reason, with or without Cause.  This Agreement contains the entire understanding of the Company and Employee with respect to the subject matter hereof.

		
	5.
	Confidentiality.  Employee agrees that the matters described in this Agreement are highly confidential.  Accordingly, Employee agrees and covenants that, except as required by applicable law, he or she shall not disclose the terms of this Agreement other than to his or her immediate family, lawyer and tax advisor, and that any such disclosure, revelation, publication, dissemination or discussion shall result in the immediate forfeiture of the Retention Award or Change in Control Bonus Payment, as applicable. 

		
	6.
	Amendment.  This Agreement may be amended or revised only by written agreement signed by the Company and Employee.

		
	7.
	Binding Effect.  This Agreement shall be binding on the Employee and Employee’s executor, administrator and heirs, but may not be assigned by Employee.  This Agreement may be transferred or assigned by the Company and shall be binding on the transferee or assignee.  This Agreement shall automatically be transferred or assigned to and be binding upon any successor in interest to the Company, whether by merger, consolidation, sale of stock, sale of assets or otherwise.  

		
	8.
	Applicable Law.  This Agreement shall be construed and enforced in accordance with the laws of the Commonwealth of Massachusetts, without giving effect to the principles of conflict of laws thereof.

IN WITNESS WHEREOF, the parties have executed this Agreement as of the date first above written.
Keryx Biopharmaceuticals, Inc.

By:  /s/ Jodie P. Morrison
       Name: Jodie P. Morrison
       Title: Interim CEO

Christine Carberry, Chief Operating Officer

/s/ Christine A. Carberry
Signed Name

Christine A. Carberry
Printed NameEX-4.8

 Exhibit 4.8 

FORM OF DEBT SECURITY 
 [Face of Security]

 ENERGOUS CORPORATION 
 [If
applicable, insert—FOR PURPOSES OF THE ORIGINAL ISSUE DISCOUNT PROVISIONS OF THE INTERNAL REVENUE CODE OF 1986, THE ISSUE PRICE OF THIS SECURITY IS % OF ITS PRINCIPAL AMOUNT AT STATED MATURITY SET FORTH BELOW (ITS “PRINCIPAL AMOUNT”),
THE AMOUNT OF ORIGINAL ISSUE DISCOUNT IS % OF ITS PRINCIPAL AMOUNT, THE YIELD TO MATURITY IS % AND THE ISSUE DATE IS] 
 [IF THE SECURITY IS A GLOBAL
SECURITY, INSERT—THIS NOTE IS A GLOBAL SECURITY. IT IS EXCHANGEABLE FOR NOTES REGISTERED IN THE NAME OF A PERSON OTHER THAN THE DEPOSITARY (AS HEREINAFTER DEFINED) OR ITS NOMINEE ONLY IN THE LIMITED CIRCUMSTANCES HEREINAFTER DESCRIBED AND MAY
NOT BE TRANSFERRED EXCEPT AS A WHOLE BY THE DEPOSITARY TO A NOMINEE OF THE DEPOSITARY OR BY A NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY OR ANOTHER NOMINEE OF THE DEPOSITARY OR BY THE DEPOSITARY OR A NOMINEE OF THE DEPOSITARY TO A SUCCESSOR OF THE
DEPOSITARY OR A NOMINEE OF SUCH SUCCESSOR DEPOSITARY.] 
  

					
	 No.
	  	$	             	 
		  	 	CUSIP No.	 

 Energous Corporation, a Delaware Corporation (herein called the “Company”, which term includes any successor
corporation under the Indenture referred to on the reverse hereof), for value received, hereby promises to pay to, or registered assigns, the principal sum of Dollars on [if Security is to bear interest prior to maturity, insert—, and to pay
interest thereon from or from the most recent Interest Payment Date to which interest has been paid or duly provided for, semi-annually on and in each year, commencing , at the rate of % per annum, until the principal hereof is paid or made
available for payment [if applicable, insert—, provided that any principal and premium, and any such installment of interest, which is overdue shall bear interest at the rate of % per annum (to the extent that the payment of such interest shall
be legally enforceable), from the dates such amounts are due until they are paid or made available for payment, and such interest shall be payable on demand]. The interest so payable, and punctually paid or duly provided for, on any Interest Payment
Date will, as provided in such Indenture, be paid to the Person in whose name this Security (or one or more Predecessor Securities) is registered at the close of business on the Record Date for such interest, which shall be the or (whether or not a
Business Day), as the case may be, next preceding such Interest Payment Date. Any such interest not so punctually paid or duly provided for will forthwith cease to be payable to the Holder on such Record Date and may either be paid to the Person
this Security (or one or more Predecessor Securities) is registered at the close of business on a Special Record Date for the payment of such Defaulted Interest to be fixed by the Trustee, notice whereof shall be given to Holders of Securities of
this series not less than 10 days prior to such Special Record Date, or be paid at any time in any other lawful manner not inconsistent with the requirements of any securities exchange on which the Securities of this series may be listed, and upon
such notice as may be required by such exchange, all as more fully provided in said Indenture. [If the Security is not to bear interest prior to maturity, insert—The principal of this Security shall not bear interest except in the case of a
default in payment of principal upon acceleration, upon redemption or at Stated Maturity and in such case the overdue principal and any overdue premium shall bear interest at the rate of % per annum (to the extent that the payment of such interest
shall be legally enforceable), from the dates such amounts are due until they are paid or made available for payment. Interest on any overdue principal or premium shall be payable on demand. [Any such interest on overdue principal or premium which
is not paid on demand shall bear interest at the rate of % per annum (to the extent that the payment of such interest on interest shall be legally enforceable), from the date of such demand until the amount so demanded is paid or made available for
payment. Interest on any overdue interest shall be payable on demand.]]. 
 Payment of the principal of (and premium, if any, on) and [any such] interest on
this Security will be made at the office or agency of the Company maintained for that purpose in in such coin or currency of [the United States of America] as at the time of payment is legal tender for payment of public and private debts[; provided,
however, that at the option of the Company payment of interest may be made by check mailed to the address of the Person entitled thereto as such address shall appear in the Register]. 

Reference is hereby made to the further provisions of this Security set forth on the reverse hereof, which further provisions shall for all purposes have the
same effect as if set forth at this place. 

 Unless the certificate of authentication hereon has been manually executed by or on behalf of the Trustee
under the Indenture referred to on the reverse hereof, this Security shall not be entitled to any benefit under the Indenture or be valid or obligatory for any purpose. 

IN WITNESS WHEREOF, the Company has caused this instrument to be duly executed under its corporate seal. 

 

			
	Dated:	 	Energous Corporation
		
		 	By
		 	                                      
          [Title]
	Attest and Countersign	 	
		
	                                      
              Secretary	 	

 [Reverse of Security.] 

ENERGOUS CORPORATION 
 This Security is
one of a duly authorized issue of securities of the Company (herein called the “Securities”), issued and to be issued in one or more series under an Indenture dated as of , (herein called the “Indenture,” which term shall have
the meaning assigned to it in such instrument), between the Company and , as trustee (herein called the “Trustee”, which term includes any successor trustee under the Indenture), to which Indenture and all indentures supplemental thereto
reference is hereby made for a statement of the respective rights, limitations or rights, duties and immunities thereunder of the Company, the Trustee and the Holders of the Securities and of the terms upon which the Securities are, and are to be,
authenticated and delivered. This Security is one of the series designated on the face hereof [, limited in aggregate principal amount to $ ]. 
 [If the
Security is to be subordinated, insert—The indebtedness evidenced by this Security is, to the extent and in the manner set forth in the Indenture, expressly subordinated and subject in right of payment to the prior payment in full of all Senior
Indebtedness (as defined in the Indenture) of the Company. This Security is issued subject to such provisions of the Indenture, and each Holder of this Security, by accepting the same, agrees to and shall be bound by such provisions and authorizes
and directs the Trustee on the Holder’s behalf to take such action as may be necessary or appropriate to acknowledge or effectuate such subordination as provided in the Indenture and appoints the Trustee such Holder’s attorney-in-fact for any and all such purposes.] 
 The Securities of this series
are subject to redemption upon not less than 30 days’, and no more than 60 days, notice provided in the manner set forth in the Indenture, [(1) on in any year commencing with the year and ending with the year at the Redemption Price equal to
100% of the principal amount, and (2)] at any time [on or after], as a whole or in part, at the election of the principal the following Redemption Prices (expressed as percentages of the principal amount): If redeemed [on or before , %, and if
redeemed] during the 12-month period beginning of the years indicated, 
  

													
	 Year
	  	Redemption
Price	 	  	Year	 	  	Redemption
Price	 
		  				  				  			
		  				  				  			
		  				  				  			

 and thereafter at a Redemption Price equal to % of the principal amount together in the case of any such redemption with
accrued interest to the Redemption Date, but interest installments whose Stated Maturity is on or prior to such Redemption Date will be payable to the Holders of such Securities of record at the close of business on the relevant record dates
referred to on the face hereof, all as provided in the Indenture. 
 [If the Security is to be redeemable in part, insert—In the event of redemption of
this Security in part only, a new Security or Securities of this series for the unredeemed portion hereof will be issued in the name of the Holder hereof upon the cancellation hereof.] 

[If the Security is to be subject to repayment at the option of the Holder, insert—To be repaid at the option of the Holder, the Company must receive
this Security, with the form of “Option to Elect Repayment” hereon duly completed, at an office or agency of the Company maintained for that purpose in (or at such other place of which the Company shall from time to time notify the Holder
of this Security) not less than nor more than days prior to the Repayment Date. The exercise of the repayment option by the Holder shall be irrevocable.] 

[If the Security is not to be subject to redemption at the option of the Company, insert—The Securities are not redeemable at the option of the Company
prior to Maturity.] 
 [If the Security is not to be an Original Issue Discount Security, insert—If an Event of Default with respect to Securities of
this series shall occur and be continuing, the principal of the Securities of this series may be declared due and payable in the manner and with the effect provided in the Indenture.] 

The Indenture permits, with certain exceptions as therein provided, the amendment thereof and the modification of the rights and obligations of the Company
and the rights of the Holders of the Securities of each series under the Indenture to be affected at any time by the Company with the consent of the Holders of not less than a majority in aggregate principal amount of the Securities at the time
Outstanding of each series to be affected. 

 The Indenture also contains provisions permitting the Holders of a majority in principal amount of the
Securities of each series at the time Outstanding, on behalf of the Holders of all Securities of such series, to waive compliance by the Company with certain provisions of the Indenture and certain past defaults under the Indenture and their
consequences. Any such consent or waiver by the Holder of this Security shall be conclusive and binding upon such Holder and upon all future Holders of this Security and of any Security issued upon the registration of transfer hereof or in exchange
herefor or in lieu hereof, whether or not notation of such consent of waiver is made upon this Security. 
 As provided in and subject to the provisions of
the indenture, the Holder of this Security shall not have the right to institute any proceeding with respect to the Indenture or for the appointment of a receiver or trustee or for any other remedy thereunder, unless such Holder shall have
previously given the Trustee written notice of a continuing Event of Default with respect to the Securities of this series , the Holders of not less than 25% in principal amount of the Securities of this series at the time Outstanding shall have
made written request to the trustee to institute proceedings in respect of such Event of Default as Trustee and offered the Trustee reasonable indemnity satisfactory to it, and the Trustee shall not have received from the Holders of a majority in
principal amount of Securities of this series at the time Outstanding a direction inconsistent with such request, and shall have failed to institute any such proceeding, for 60 days after receipt of such notice, request and offer of indemnity. The
foregoing shall not apply to any suit instituted by the Holder of this Security for the enforcement of any payment of principal hereof or any premium or interest hereon on or after the respective due dates expressed herein. 

No reference herein to the Indenture and no provision of this Security or of the Indenture shall alter or impair the obligation of the Company, which is
absolute and unconditional, to pay the principal of (and premium, if any, on) and interest on this Security at the times, place and rate, and in the coin or currency, herein prescribed. 

[If the Security is to be in registered form, insert—As provided in the Indenture and subject to certain limitations therein set forth, the transfer of
this Security is registrable in the Register, upon surrender of this Security for registration of transfer at the office or agency of the Company in any place where the principal of (and premium, if any, on) and interest on this Security are
payable, duly endorsed by, or accompanied by a written instrument of transfer in form satisfactory to the Company and the Registrar duly executed by, the Holder hereof or his attorney duly authorized in writing, and, thereupon one or more new
Securities of this series, of authorized denominations and for the same aggregate principal amount, will be issued to the designated transferee or transferees.] 

[The Securities of this series are issuable only in registered form in denominations of $ [and any integral multiple] [or increments of $ in excess] thereof.
As provided in the Indenture and subject to certain limitations therein set forth, Securities of this series are exchangeable for a like aggregate principal amount of Securities of this series of a different authorized denomination, as requested by
the Holder surrendering the same.] 
 [No service charge shall be made for any such registration of transfer or exchange, but the Company may require
payment of a sum sufficient to cover any tax or other governmental charge payable in connection therewith.] 
 [Prior to due presentment of this Security
for registration of transfer, the Company, the Trustee and any agent of the Company or the Trustee may treat the Person in whose name this Security is registered as the owner hereof for all purposes, whether or not this Security be overdue, and
neither the Company, the Trustee nor any such agent shall be affected by notice to the contrary.] 
 [If the Security is a Global Security,
insert—“Global Security” and “Global Securities” means a Security or Securities evidencing all or a part of a series of Securities, issued to the Depositary (as hereinafter defined) for such Series or its nominee, and
registered in the name of such Depositary or its nominee. “Depositary” means, with respect to the Securities of any series issuable or issued in whole or in part in the form of one or more Global Securities, the person designated as the
Depositary by the Company. 
 No holder of any beneficial interest in this Security held on its behalf by a Depositary or a nominee of such Depositary shall
have any rights under the Indenture with respect to such Global Security, and such Depositary or nominee may be treated by the Company, the Trustee, and any agent of the Company or the Trustee as the owner of such Global Security for all purposes
whatsoever. Notwithstanding the foregoing, nothing herein shall impair, as between a Depositary and such holders of beneficial interests, the operation of customary practices governing the exercise of the rights of the Depositary as Holder of any
Security. 
 This Security is exchangeable, in whole but not in part, for Securities registered in the names of Persons other than the Depositary or its
nominee or in the name of a successor to the Depositary or a nominee of such successor depositary only if (i) the Depositary notifies the Company that it is unwilling or unable to continue as Depositary for this Note or if at any time such
Depositary ceases to be a clearing agency registered under the Securities Exchange Act of 1934, as amended, and, in either case, a successor depositary is not appointed by the Company within 90 days, (ii) the Company in its discretion at any
time determines not to have all of the Securities of this series represented by one or more Global Security or Securities and notifies the Trustee thereof, or (iii) an Event of Default has occurred and is continuing with respect to the
Securities of this series. If this Security is exchangeable pursuant to the preceding sentence, it shall be exchangeable for Securities issuable in authorized denominations and registered in such names as the Depositary holding this Security shall
direct. Subject to the foregoing, this Security is not exchangeable, except for a Security or Securities of the same aggregate denominations to be registered in the name of such Depositary or its nominee or in the name of a successor to the
Depositary or a nominee of such successor depositary.] 

 [The Indenture entitles Holders to receive annual reports with respect to the Trustee’s eligibility and
qualifications to serve as Trustee by filing their names and addresses with the Trustee for that purpose within two years preceding and mailing of any such annual report.] 

No recourse shall be had for the payment of the principal of (and premium, if any, on) or interest on this Security, or for any claim based hereon, or
otherwise in respect hereof, or based on or in respect of the Indenture of any indenture supplemental thereto, against any incorporator, stockholder, officer or director, as such, past, present or future, of the Company or any successor corporation,
whether by virtue of any constitution, statute or rule of law, or by the enforcement of any assessment or penalty or otherwise, all such liability being, by the acceptance hereof and as part of the consideration for the issue hereof, expressly
waived and released. 
 All terms used in this Security which are defined in the Indenture shall have the meanings assigned to them in the Indenture. 

This Security, including without limitation the obligation of the Company contained herein to pay the principal of (and premium, if any, on) and interest on
this Security in accordance with the terms hereof and of the Indenture, shall be construed in accordance with and governed by the laws of the State of New York. 
  

	
	[Trustee’s Certificate of Authentication.]
	
	 This is one of the Securities of the series designated herein referred to in the within-mentioned
Indenture.

	
	 , as

	 [Authenticating Agent for] the Trustee

	
	 By

	                                      
                      Authorized Officer

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