Document:

EX-10.8

 Exhibit 10.8 

SALARIUS PHARMACEUTICALS, LLC 

MANAGER AGREEMENT 
 This
Manager Agreement (this “Agreement”) is made effective as of January 21, 2017 (the “Effective Date”) by and between Salarius Pharmaceuticals, LLC, a Delaware limited liability company (the
“Company”) and Sunil Sharma (the “Manager”). 
 In consideration of the mutual covenants and
representations set forth below, the Company and the Manager agree as follows: 
 1.    Services. The Manager serves as a Manager
of the Company under Article 6 of its Amended and Restated Limited Liability Company Agreement, dated as of January 1, 2015 (in its current form and as amended from time to time, the “Operating Agreement”). In addition to, but
not as limitation of, his duties under the Operating Agreement, the Manager agrees to participate in the following activities, among others, to further the goals of the Company at the direction of the Managers and CEO: (a) consultation with
executive management, development team leads, and other employees and representatives of the Company, including regular meetings (in-person or electronically) with the Company’s CEO or his designee(s);
(b) assessment or review of medical and technical plans; and (c) such other items as reasonably requested by the Company’s CEO or his designee(s) (collectively, the “Services”). The Manager agrees and acknowledges
that his or her name and likeness will be made publically available through the Company’s website and other promotional and informative materials related to the Company. 

2.    Compensation. As consideration for the Services, concurrent with the execution of this Agreement, and subject to the approval
of the Company’s Board of Directors, the Manager shall be granted seventy-two (72) profits interest common units of the Company, pursuant to the terms and conditions, including rules of vesting and
forfeiture, as set forth in a separate agreement (the “Restricted Unit Award Agreement”). 
 3.    Confidentiality
and Intellectual Property. As a material inducement to Company to engage Manager hereunder, Manager agrees to execute and be bound by the terms and conditions of the Intellectual Property Agreement which is attached as Exhibit A
and incorporated herein by reference (the “IPA”). 
 4.    No Conflict. The Manager represents that the
Manager’s compliance with the terms of this Agreement and provision of Services hereunder will not violate any duty which the Manager may have to any other person or entity (such as a present or former employer), including obligations
concerning providing services to others, confidentiality of proprietary information and assignment of inventions, ideas, patents or copyrights, and the Manager agrees that the Manager will not do anything in the performance of the Services hereunder
that would violate any such duty. 
 5.    Legal Relationship. The Manager is an owner of the Company and independent contractor
and will not be deemed an employee of the Company or any of its affiliates, or entitled to participate in any employee benefit plan of the Company or receive any benefit available to employees of the Company, including insurance, worker’s
compensation, retirement and vacation benefits. The Manager shall not have any authority to, and shall not, make any representation or promise or enter into any agreement on behalf of the Company except as specifically provided in the Operating
Agreement. 

  
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 6.    Term and Termination. The term of this Agreement shall be for three
(3) years (the “Term”) from the Effective Date and shall be capable of renewal by the Company and the Manager mutually in writing. This Agreement may be terminated by either party upon 30 days’ prior notice. The provisions
of Sections 3, 4, and 5 shall survive expiration or termination of this Agreement for any reason. 
 7.    Miscellaneous. This
Agreement will be governed by and construed according to the laws of the State of Delaware as such laws are applied to agreements entered into and to be performed entirely within Delaware between Delaware residents. This Agreement and the agreements
referred to herein, including, but not limited to, the Consulting Agreement and the IPA, are the only and entire agreements between the parties and supersede all prior agreements and representations. This Agreement may be amended or modified only by
a written document signed by both parties. If any provision of this Agreement shall be found by a court to be void, invalid or unenforceable, the same shall be reformed to comply with applicable law or stricken if not so conformable, so as not to
affect the validity or enforceability of the remainder of this Agreement. This Agreement may be executed in counterparts, each of which shall be deemed an original, but both of which together shall constitute one and the same instrument. 

[Remainder of Page Intentionally Left Blank] 

  
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 IN WITNESS WHEREOF, the parties have executed this Manager Agreement as of the date first
set forth above. 
  

			
	THE COMPANY
	
	SALARIUS PHARMACEUTICALS, LLC
		
	By:	 	/s/ David Arthur
	Name:	 	David Arthur
	Title:	 	Chief Executive Officer
	
	THE MANAGER
	
	/s/ Sunil Sharma
	Name: Sunil Sharma

  

  
 3EX-10.9

 Exhibit 10.9 

SALARIUS PHARMACEUTICALS, LLC 

RESTRICTED UNIT AWARD AGREEMENT 

THIS RESTRICTED UNIT AWARD AGREEMENT (this “Agreement “) is dated as of August 1, 2016 (the “Grant
Date”), by and between Salarius Pharmaceuticals, LLC, a Delaware limited liability company (the “Company”), and David J. Arthur (the “Grantee”). 

WITNESSETH 
 WHEREAS, the
Grantee and the Company have executed that certain Executive Employment Agreement entered into on November 24, 2015 with an effective date of November 1, 2015 (the “Employment Agreement”); and 

WHEREAS, the Company has agreed to issue Restricted Units to the Grantee in connection with his provision of services under the Employment
Agreement; and 
 WHEREAS, for the foregoing reasons, the Company desires to grant Restricted Units to the Grantee on the terms and subject
to the conditions set forth herein, and the Grantee desires to acquire said Restricted Units on such terms. 
 NOW, THEREFORE, in
consideration of the promises set forth herein and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, and intending to be legally bound, the parties hereto agree as follows: 

1.    Agreement of Units. The Company hereby grants to the Grantee a total of 871.25 Profits Interest Common Units
of the Company (the “Restricted Units”). The rights, privileges, limitations and obligations of the Restricted Units are set forth in the Amended and Restated Limited Liability Company Agreement of the Company dated
January 1, 2015, as it may be amended and/or restated from time to time (the “LLC Agreement”), and are subject to the further terms and conditions set forth in this Agreement. In the event of any conflict between the LLC
Agreement and this Agreement, the terms of the LLC Agreement shall control. By executing this Agreement in the space provided on the signature page below, the Grantee acknowledges receipt of a fully executed copy of the LLC Agreement. The Restricted
Units are subject to a substantial risk of forfeiture, vesting as provided herein, and as set forth in the LLC Agreement will participate to the extent provided in the LLC Agreement in the future appreciation in the value of the Company above the
fair market value of the Company as of the Grant Date, which is $8,746,800. The Restricted Units are intended to be Profits Interest Units as defined in the LLC Agreement. 

2.    Closing. The issuance of the Restricted Units (the “Closing”) shall occur
simultaneously with the execution and delivery of this Agreement by Grantee and the Company. At the Closing, the Company shall issue or otherwise memorialize the issuance to Grantee of the Restricted Units. The date of the Closing is hereinafter
referred to as the “Grant Date.”     
 3.    Vesting. The Restricted
Units shall not become Vested Units except as and to the extent provided for in Section 3(a) below. Until such time as the Restricted Units become Vested Units, they shall be subject to forfeiture in accordance with the provisions of
Section 3(b) below. 

 (a)    Except as otherwise provided in subsection (b) of this
Section 3, the Restricted Units granted pursuant to this Agreement shall become “Vested Units” as follows: the vesting commencement date for the Restricted Units shall be November 1, 2015 (the “Vesting
Commencement Date”) and 31.25 Restricted Units shall vest on the Vesting Commencement Date. Of the remaining 840 Restricted Units (the “Remaining Units”), 1/16th of the Remaining Units (52.5 Units) shall vest on
December 31, 2015, and 1/16th of the Remaining Units shall vest on the last day of each Quarter thereafter so that all of the Restricted Units have vested and been released from restrictions as of September 30, 2019, subject to Grantee
continuing to have a Service Relationship with the Company through each such date. “Quarter” for the purposes herein shall refer to the following quarter system (each period, a Quarter): January 1—March 31; April
1—June 30; July 1—September 30; October 1—December 31. 
 (b)    In the event that Grantee’s Service
Relationship is terminated (i) by the Company in accordance with an agreement governing the Grantee’s provision of services to the Company, (ii) due to death or disability of the Grantee, or (iii) as a result of retirement or
resignation by Grantee, then Grantee shall automatically, and without the requirement for any action on the part of the Company or the Grantee, forfeit all Restricted Units which are not at such time Vested Units; and all such Restricted Units which
are not at the time of such forfeiture Vested Units shall be deemed to have been tendered to the Company by Grantee for cancellation and cancelled by the Company, in each case without the requirement for any action on the part of the Company or
Grantee to effect such deemed tender and cancellation. The Company shall have no obligation to make any payment to Grantee as a result of any such forfeiture and cancellation of Restricted Units; and Company shall be entitled, without the
requirement of any action on the part of Grantee, to record the cancellation of the forfeited Restricted Units on the records of the Company. 

(c)    All of the Restricted Units shall automatically become Vested Units in the event a Change of Control (as defined
below) occurs with respect to the Company while Grantee remains in Grantee’s Service Relationship with the Company. In addition, all of the Restricted Units shall automatically become Vested Units at such time as the Company has made
distributions to its Members which, in the aggregate, exceed $8,000,000, provided that such event occurs with respect to the Company while the Grantee remains in Grantee’s Service Relationship with the Company. 

(d)    For purposes of this Agreement, the following terms shall have the meanings set forth below: 

(i)    “Change of Control” shall mean the first to occur of: (X) any third
party (or affiliated third parties), becomes a beneficial owner of securities of the Company representing more than 50% of the voting power of the then outstanding securities of the Company; (Y) upon the consummation of a merger or
consolidation of the Company with another entity where the equity owners of the Company, immediately prior to the merger or consolidation, will beneficially own, immediately after the merger or consolidation, equity ownership entitling such persons
to less than 50% of all votes to which all equity owners of the surviving entity would be entitled in the election of directors or managers, or (Z) a sale or other disposition of all or substantially all of the assets of the Company. For the
avoidance of doubt, Change in Control excludes any transaction designed to be a financing transaction for the Company or to raise money for the continuing operations of the company, even if such financing transaction results in a Change of Control.

  

			
	 	 
	 SALARIUS PHARMACEUTICALS, LLC
 RESTRICTED UNIT
AWARD AGREEMENT
	  	PAGE 2

 (ii)    “Service Relationship”
shall mean Grantee’s employment with or contractual service to the Company or its subsidiaries or affiliates, whether in the capacity of an employee, officer, director, manager, advisor or independent contractor. Unless otherwise determined by
the Company’s Board of Managers, Grantee’s Service Relationship shall not be deemed to have terminated merely because of a change in the capacity in which Grantee renders service to the Company, its subsidiaries or affiliates, or a
transfer between the Company and any subsidiary or affiliate, provided that there is no interruption or other termination of the Service Relationship. Subject to the foregoing, the Company’s Board of Managers, in its discretion, shall
determine whether Grantee’s Service Relationship has terminated and the effective date of such termination. 

4.    To the extent any portion of the Restricted Units granted under this Agreement have become Vested Units as provided
above, such Vested Units will thereafter be free of the forfeiture provisions of this Agreement; provided, that all Vested Units shall at all times remain subject to the terms, conditions, restrictions and limitations set forth from time to
time in the LLC Agreement, including without limitation any applicable rights of repurchase set forth in the LLC Agreement. 

5.    Restrictions on Transfer. Except as otherwise provided for in the LLC Agreement, Grantee may not, directly or
indirectly, by operation of law or otherwise, voluntarily or involuntarily, alienate, attach, sell, assign, pledge, hypothecate, encumber, mortgage, charge or otherwise transfer any of the unvested Restricted Units granted hereunder or any interest
therein, except with the prior written consent of the Company, which may be granted or withheld in the Company’s sole discretion. It is understood that the Company shall not agree to any such transfers during the first two years from and after
the Grant Date. 
 6.    Restrictive Legend. In addition to any other restrictions on terms of transfer set forth
herein or in the LLC Agreement, Grantee acknowledges that the Restricted Units granted hereunder have not been registered under the Securities Act of 1933, as amended (the “Securities Act”), or applicable state securities
laws, and may not be offered, sold, assigned, pledged or otherwise transferred in the absence of an effective registration statement under the Securities Act covering such transfer or an opinion of counsel satisfactory to the Company that
registration under the Securities Act is not required. In the event that certificates evidencing the Restricted Units are issued, such certificates shall bear a legend substantially in the form set forth below: 

“The transferability of this certificate and the Membership Units represented hereby are subject to the restrictions,
terms, and conditions (including restrictions on transfers) contained in (1) a certain Restricted Class A Common Units Award Agreement between the Company and the holder of record of this certificate, and (2) the LLC Agreement of the
Company from time to time in effect, copies of which are available at the offices of the Company for examination.” 

7.    Withholding Taxes and Section 83(b) Election. The Company shall withhold from
distributions to Grantee any federal, state or local taxes payable with respect to the grant under this Agreement of the Restricted Units; it is anticipated that this amount will be $0.00. As a condition to the grant of the Restricted Units, Grantee
hereby agrees to file a Section 83(b) election with the Internal Revenue Service no later than 30 days after the Grant Date. If such election is not filed, the Company shall have the option to declare this Agreement, and the issuance of the
Restricted Units hereunder, void. 

  

			
	 	 
	 SALARIUS PHARMACEUTICALS, LLC
 RESTRICTED UNIT
AWARD AGREEMENT
	  	PAGE 3

 8.    Miscellaneous. 

(a)    Upon registration of the Restricted Units in Grantee’s name, and the execution and delivery by Grantee of this
Agreement, Grantee shall have, subject to the terms of this Agreement and the LLC Agreement, all of the rights and duties of, and status as, a holder of Profits Interest Common Units of the Company in respect of the Restricted Units. By executing
this Agreement, Grantee is agreeing to be bound by all of the terms and conditions of the LLC Agreement. 
 (b)    The
grant of Restricted Units does not confer upon Grantee any right to continue any Service Relationship with the Company or any Subsidiary or Company Affiliate thereof, and the Grantee shall remain subject to disciplinary action, including, but not
limited to, discharge, to the same extent as if this instrument had never been executed. Nothing contained herein shall be construed as a contract of employment or other Service Relationship. 

(c)    This Agreement shall be governed by the laws of the State of Delaware, without regard to the conflict of laws
provisions thereof. Each of the Company and Grantee agrees to submit to the jurisdiction of the state and Federal courts located in the State of Texas and agree that venue properly lies in the State of Texas. 

(d)    This Agreement, together with the LLC Agreement, expresses the entire agreement and understanding of the Company
and Grantee with respect to the subject matter hereof and supersedes all prior oral or written agreements, commitments and understandings pertaining to the subject matter hereof. This Agreement may not be orally changed, modified or terminated, nor
shall any oral waiver of any of its terms be effective. This Agreement may be changed, modified or terminated only by an agreement in writing signed by the Company and Grantee. 

(f)    If any provision(s) of this Agreement shall be determined to be illegal or unenforceable, such determination shall
in no manner affect the legality or enforceability of any other provision hereof, and any such illegal or unenforceable provision shall be construed as narrowly as possible in order to enforce to maximum extent permitted, the remainder of this
Agreement. 
 (g)    All notices, requests, consents and other communications shall be in writing and be deemed given
when delivered personally, by telex or facsimile transmission or when received if mailed by a nationally recognized overnight carrier or by first class registered or certified mail, postage prepaid. Notices to the Company shall be addressed to its
principal offices. Notices to Grantee shall be delivered to the address set forth underneath Grantee’s signature below, or to such other address or addresses as subsequently be furnished by such party in writing to the other. 

(h)    This Agreement shall be binding upon and shall inure to the benefit of the parties hereto, their respective
successors, assigns, legal representatives, estates, executors, administrators and heirs. The Company has the right to assign this Agreement, and such assignee shall become entitled to all the rights of the Company hereunder to the extent of such
assignment. 

  

			
	 	 
	 SALARIUS PHARMACEUTICALS, LLC
 RESTRICTED UNIT
AWARD AGREEMENT
	  	PAGE 4

 (i)    This Agreement is subject to all of the terms, conditions and
limitations set forth in the LLC Agreement. 
 [Signature Page Follows] 

  

			
	 	 
	 SALARIUS PHARMACEUTICALS, LLC
 RESTRICTED UNIT
AWARD AGREEMENT
	  	PAGE 5

 SIGNATURE PAGE 

IN WITNESS WHEREOF, the parties have caused this Restricted Profits Interest Common Unit Award Agreement to be effective as of the day and
year first above written. 
  

			
	SALARIUS PHARMACEUTICALS, LLC
		
	By:	 	/s/ Jonathan Northrup
	Name:	 	Jonathan Northrup
	Title:	 	Manager

  

			
	GRANTEE
		
	By:	 	/s/ David J. Arthur
	Name:	 	David J. Arthur
	
	Address:

  

			
	 	 
	 SALARIUS PHARMACEUTICALS, LLC
 RESTRICTED UNIT
AWARD AGREEMENT
	  	PAGE 6

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