Document:

EX-10.2

 Exhibit 10.2 

KINEX PHARMACEUTICALS LLC 

FIRST AMENDED AND RESTATED 

2004 COMMON UNIT OPTION PLAN 

(AS OF OCTOBER 1, 2012) 
  

	I.	ESTABLISHMENT OF PLAN; DEFINITIONS 

 1. Purpose. The purpose of this Kinex
Pharmaceuticals LLC 2004 Unit Option Plan is to provide an incentive to key Employees and non-Employee Directors of, and Consultants and other independent advisors to, Kinex Pharmaceuticals LLC, a Delaware
limited liability company (the “Company”) or any of its Affiliates, who are in a position to contribute materially to the long-term success of the Company, to increase their interest in the welfare of the Company and its Affiliates and to
aid in attracting and retaining Employees, Directors and Consultants of outstanding ability. 
 2. Definitions. Unless the context
clearly indicates otherwise, the following terms shall have the meanings set forth below: 
 “Affiliate” shall mean
any wholly owned subsidiary or any entity in which the Company owns at least a 25% equity interest. 
 “Board”
shall mean the Board of Managers of the Company. 
 “Cause” shall mean (i) for a Grantee who is a party to an
employment or consulting agreement with the Company or an Affiliate which agreement provides for a definition of “Cause” therein, “Cause” shall have the same meaning as provided for in such agreement, or (ii) for a Grantee
who is not a party to such an agreement, “Cause” shall mean repeated failure to properly perform assigned duties (after written notice of at least one such failure had previously been communicated to the Grantee by the Company), gross
negligence, commission of a felony or any act materially injurious to the financial or business prospects or affairs of the Company or an Affiliate involving dishonesty or breach of any duty of confidentiality or loyalty. 

“Change of Control” shall mean (i) for a Grantee who is a party to an employment or consulting agreement with
the Company or an Affiliate which agreement provides for a definition of “Change of Control” therein, “Change of Control” shall have the same meaning as provided for in such agreement, or (ii) for a Grantee who is not a
party to such an agreement, “Change of Control” shall mean the satisfaction of any one or more of the following conditions (and the “Change of Control” shall be deemed to have occurred as of the first day that any one or more of
the following conditions shall have been satisfied): 
 (a) Any person (as such term is used in paragraphs 13(d) and 14(d)(2)
of the Exchange Act, hereinafter in this definition, “Person”), other than the Company or an Affiliate or an employee benefit plan of the Company or an Affiliate, becomes the beneficial owner (as defined in
Rule 13d-3 under the Exchange Act), directly or indirectly, of securities of the Company representing more than 50% of the combined voting power of the Company’s then outstanding securities; 

 (b) The Company’s members approve a merger, consolidation or other business
combination (a “Business Combination”) other than a Business Combination in which holders of Common Units of the Company immediately prior to the Business Combination have substantially the same proportionate ownership of the equity of the
surviving corporation or other business entity immediately after the Business Combination as immediately before; 
 (c) The
Company’s members approve either (i) an agreement for the sale or disposition of all or substantially all of the Company’s assets to any entity that is not an Affiliate, or (ii) a plan of complete liquidation of the Company; or

 (d) The persons who were Directors immediately before a tender offer by any Person other than the Company or an Affiliate,
or before a merger, consolidation or contested election, or before any combination of such transactions, cease to constitute a majority of the members of the Board as a result of such transaction or transactions. 

“Committee” shall mean a committee designated by the Board which committee shall administer the Plan as set forth in
Section 4 of this Article I of the Plan; provided, however, that if no such committee shall be so designated, the Board shall serve as the Committee. 

“Company” shall mean Kinex Pharmaceuticals LLC, a Delaware limited liability company. 

“Consultant” shall mean any non-Employee consultant or advisor to the Company
or an Affiliate who has contracted directly with the Company or an Affiliate to render bona fide consulting or advisory services thereto. 

“Director” shall mean any individual who is a member of the Board or a member of the board of directors or managers
of an Affiliate, and who is not an Employee. 
 “Disability” shall mean the inability to engage in any substantial
gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or which has lasted or can be expected to last for a continuous period of not less than 12 months. 

“Employee” shall mean any employee, including officers, of the Company or an Affiliate. 

“Exchange Act” shall mean the Securities Exchange Act of 1934, as amended. 

“Fair Market Value” shall mean on any date, (i) if the Units is not listed on a national securities exchange or
quoted on Nasdaq, the fair market value of the Units on that date as determined by the Board, or (ii) if the Units is listed on a national securities exchange or is quoted on Nasdaq, the closing price reported on the composite tape for issues
listed on such exchange on such date, or the closing price or the average of the closing dealer “bid” and “asked” prices for the Units as quoted on Nasdaq, or if no trades shall have been reported for such date, on the next
preceding date on which there were such trades reported; provided, however, that if no quotations shall have been made within the 10 business days immediately preceding such date, Fair Market Value shall be determined by the Board.

 “Family Member” shall mean, with respect to a Grantee, any child,
stepchild, grandchild, parent, stepparent, spouse, former spouse, sibling, niece, nephew, mother-in-law,
father-in-law, brother-in-law or sister-in-law, including adoptive relationships, any person sharing the Grantee’s household (other than a tenant of the Grantee), a trust in which such persons have more than 50% of the beneficial
interest, a foundation in which such persons (or the Grantee) control the management of assets and any other entity in which such persons (or the Grantee) own more than 50% of the voting interests. 

“Grantee” shall mean an Employee, Director or Consultant who has been granted a Unit Option under the Plan. 

“Nasdaq” shall mean the National Association of Securities Dealers Automated Quotation System. 

“Unit Option” shall mean a Unit Option granted to an Employee, Director or Consultant pursuant to the provisions set
forth in Article II of the Plan. 
 “Option Period” shall mean the term of a Unit Option as fixed by the
Committee. 
 “Plan” shall mean this Kinex Pharmaceuticals, LLC 2004 Common Unit Option Plan as set forth herein
and as amended from time to time. 
 “Public Offering” means the first offer and sale to the public by the Company
(including any successor) or any holders of shares of Common Units subsequent to the date of this Agreement, pursuant to a registration statement that has been declared effective by the securities regulatory authority in the applicable jurisdiction.

 “Units” shall mean authorized but unissued shares of the Common Units of the Company or reacquired units of the
Company’s Common Units. 
 “Unit Option” shall mean an option granted pursuant to the Plan to purchase Units.

 “Unit Option Agreement” shall mean the written instrument evidencing the grant of one or more Unit Options under
the Plan and which shall contain the terms and conditions applicable to such grant. 
 3. “Units Subject to the Plan. There are
hereby reserved for issuance under the Plan 100,000 Units. If a Unit Option shall expire and terminate for any reason, in whole or in part, without being exercised, the number of Units as to which such expired or terminated Unit Option
shall not have been exercised may again become available for the grant of new Unit Options hereunder. 

 4. Administration of the Plan. The Plan shall be administered by the Committee. Subject to
the express provisions of the Plan, the Committee shall have authority to determine the eligibility of Employees, Directors and Consultants to participate in the Plan, to grant Unit Options under the Plan, to interpret the Plan, to prescribe, amend,
and rescind rules and regulations relating to the Plan, to determine the terms and provisions of Unit Option Agreements and to make all other determinations necessary or advisable for the administration of the Plan. Any controversy or claim arising
out of or related to the Plan shall be determined unilaterally by and in the sole discretion of the Committee. Any determination, decision or action of the Committee in connection with the construction, interpretation, administration, implementation
or maintenance of the Plan shall be final, conclusive and binding upon all Grantees and all person(s) claiming under or through any Grantees. 

Should the Units become publicly traded, there shall be 2 Committees under the Plan. Solely for the purpose of Unit Options granted under the
Plan to Employees and Directors who are subject to Section 16 of the Exchange Act, a special Committee comprised solely of 2 or more individuals who are “non-employee directors” (as such term is
defined in Rule 16b-3(b)(3) under the Exchange Act), shall administer the Plan to satisfy the applicable requirements of Rule 16b-3 with respect to such
Employees and Directors. For all other purposes of the Plan, the regular Committee shall administer the Plan. 
 Notwithstanding anything
contained in this Section 4 to the contrary, no member of the Committee shall have the authority to render any decision with respect to his or her participation in or entitlement to benefits under the Plan. 

5. Amendment or Termination. The Board may, at any time, alter, amend, suspend, discontinue, or terminate the Plan; provided,
however, that no such action shall adversely affect the right of any Grantee under any Unit Option previously granted thereto hereunder. 

6. Effective Date of Plan. The Plan originally became effective on January 15, 2004, and this amendment and restatement shall
become effective as of October 1, 2012 and shall apply to all outstanding Unit Options and future Unit Options issued under this Plan. 
  

	II.	UNIT OPTION PROVISIONS. 

 1. Granting of Unit Options. 

(a) Employees, Directors and Consultants shall be eligible to receive Unit Options under the Plan. 

(b) The Committee shall determine and shall designate from time to time those Employees, Directors or Consultants who are to be
granted Unit Options and shall specify the number of Units subject to each Unit Option. 

 (c) The Committee may grant at any time new Unit Options to an Employee, Director
or Consultant who has previously received Unit Options or other Unit Options, whether such prior Unit Options or other Unit Options are then outstanding, have previously been exercised in whole or in part or are canceled in connection with the
issuance of new Unit Options. 
 (d) When granting a Unit Option, the Committee shall determine the purchase price of the
Units subject thereto. 
 (e) The Committee, in its sole discretion, shall determine whether any particular Unit Option shall
become exercisable in one or more installments, specify the installment dates and, within the limitations herein provided, determine the total period during which the Unit Option shall be exercisable. Further, the Committee may make such other
provisions as may be generally acceptable or desirable in the opinion of the Committee. 
 2. Exercise of Unit Options. The purchase
price of Units subject to a Unit Option shall be payable upon its exercise in cash or by certified check, bank draft or postal or express money order. In addition, the Committee, in its discretion, may permit a Grantee to make partial or full
payment of the purchase price by utilization of a “cashless exercise” or any other method made available by the Committee. 
 3.
Termination of Employment, Director Status or Consulting Engagement. Except as provided otherwise in the applicable Unit Option Agreement (in which case the provisions of the Unit Option Agreement shall control over the provisions of this
Section 3): 
 (a) Except as provided in paragraphs (b) and (c) below, if the employment with the Company or
an Affiliate of a Grantee who is an Employee is terminated other than by the Company or Affiliate for Cause, only those Unit Options held by the Grantee which were immediately exercisable at the termination of the Grantee’s employment shall be
exercisable by the Grantee following the termination of the Grantee’s employment. Such Unit Options must be exercised prior to the expiration of the Option Period or they shall be forfeited. 

(b) Notwithstanding anything to the contrary contained in paragraph (a) above, if the employment with the Company or an
Affiliate of a Grantee who is an Employee is terminated by the Company or Affiliate for Cause, all then outstanding Unit Options held by the Grantee shall expire immediately and such Unit Options shall not be exercisable after the termination of the
Grantee’s employment. 
 (c) Notwithstanding anything to the contrary contained in paragraphs (a) and
(b) above, if the employment with the Company or an Affiliate of a Grantee who is an Employee is terminated on account of the Grantee’s death or Disability, only those Unit Options held by the Grantee which were immediately exercisable at
the date of the Grantee’s death or Disability, as applicable, shall be exercisable by the Grantee, the representative of the Grantee’s estate or the Grantee’s beneficiaries to whom the
Non-Qualified Unit Options have been transferred. Such Unit Options must be exercised prior to the expiration of the Option Period, or they shall be forfeited. 

 (d) If a Grantee’s status as a Director or engagement as a Consultant shall
terminate other than by the Company or Affiliate for Cause, without such Grantee thereupon becoming an Employee, only those Unit Options held by the Grantee which were immediately exercisable at the termination of the Grantee’s status as a
Director or engagement as a Consultant, as applicable, shall be exercisable by the Grantee following such termination. Such Unit Options must be exercised prior to the expiration of the Option Period or they shall be forfeited. Notwithstanding the
foregoing, if a Grantee’s status as a Director or engagement as a Consultant shall terminate for Cause, all then outstanding Unit Options held by the Grantee shall expire immediately and such Unit Options shall not be exercisable after the
termination of the Grantee’s status as a Director or engagement as a Consultant. 
  

	III.	SPECIAL RULES. 

 Vesting. All Unit Options outstanding on October 1, 2012
shall be fully vested notwithstanding any language to the contrary in any Unit Option Agreement. Upon the occurrence of a Change of Control or a Public Offering, all Unit Options shall automatically become immediately exercisable (100% vested). 

 

	IV.	GENERAL PROVISIONS. 

 1. Recapitalization Adjustments. 

(a) In the event of any change in capitalization affecting the Units, including, without limitation, a Units dividend or other
distribution, Units split, reverse Units split, recapitalization, consolidation, subdivision, split-up, spin-off, split-off,
combination or exchange of shares or other form of reorganization or recapitalization, or any other change affecting the Units, the Board shall authorize and make such proportionate adjustments, if any, as the Board shall deem appropriate to reflect
such change, including, without limitation, with respect to the aggregate number of shares of Units for which Unit Options in respect thereof may be granted under the Plan, the number of shares of Units covered by each outstanding Unit Option, and
the purchase price per share of Units in respect of outstanding Unit Options. 
 (b) Any provision hereof to the contrary
notwithstanding, in the event the Company is a party to a merger or other reorganization, the Board shall determine the treatment of outstanding Unit Options, which treatment may include the assumption of outstanding Unit Options by the surviving
company or its parent, their continuation by the Company (if the Company is the surviving company), accelerated vesting or accelerated expiration, or settlement in cash. 

2. General. 

(a) Each Unit Option shall be evidenced by a Unit Option Agreement. 

 (b) The granting of a Unit Option in any year shall not give the Grantee any
right to similar grants in future years or any right to be retained as an Employee, Director or Consultant, and all Grantees shall remain subject to discharge or removal to the same extent as if the Plan were not in effect. 

(c) No Grantee, and no beneficiary or other person claiming under or through him, shall have any right, title or interest by
reason of any Unit Option to any particular assets of the Company, or any shares of Units allocated or reserved for the purposes of the Plan or subject to any Unit Option except as set forth herein. 

(d) No Unit Option shall or may be sold, exchanged, assigned, pledged, encumbered, or otherwise hypothecated or disposed of
except by will or the laws of descent and distribution, and a Unit Option shall be exercisable during the Grantee’s lifetime solely by the Grantee or his conservator. Notwithstanding the immediately preceding sentence, a Unit Option may be
transferred by the Grantee as an inter vivos gift to a Family Member. 
 (e) Notwithstanding any other provision of the Plan
or agreements made pursuant thereto, the Company’s obligation to issue or deliver any certificate or certificates for shares of Units under a Unit Option, and the transferability of Units acquired by exercise of a Unit Option, shall be subject
to all of the following conditions: 
 (i) Any registration or other qualification of such shares under any state or federal
law or regulation, or the maintaining in effect of any such registration or other qualification which the Board shall, in its absolute discretion upon the advice of counsel, deem necessary or advisable; 

(ii) The obtaining of any other consent, approval, or permit from any state or federal governmental agency which the Board
shall, in its absolute discretion upon the advice of counsel, determine to be necessary or advisable; and 
 (iii) Each Unit
certificate issued pursuant to a Unit Option shall bear such legends which the Company shall determine, in its absolute discretion, are necessary or advisable, or which in the opinion of counsel to the Company are required under applicable federal
or state securities laws. 
 (f) All payments to Grantees or to their legal representatives shall be subject to any
applicable tax, community property, or other statutes or regulations of the United States or of any state having jurisdiction thereof. If the Grantee is an Employee, the Grantee may be required to pay to the Company the amount of any withholding
taxes which the Committee, in its sole discretion, deems necessary to be withheld in order to comply with any applicable statutes or regulations with respect to a Unit Option or its exercise. In the event that such payment is not made when due, the
Company shall have the right to deduct, to the extent permitted by law, from any payment or settlement of any kind otherwise due to such person, all or part of the amount required to be withheld. The Company shall not be required to issue Units
pursuant to the exercise of a Unit Option until such applicable obligations, if any, shall have been satisfied. 

 (g) The Company shall issue any Unit certificates required to be issued in
connection with the exercise of a Unit Option with reasonable promptness following such exercise. 
 (h) The Plan and the
grant or exercise of Unit Options granted under the Plan shall be subject to, and shall in all respects comply with, the applicable laws of Delaware. 

(i) Should the participation of any Employee or Director in the Plan be subject to Section 16 of the Exchange Act, it is
the express intent of the Company that the Plan and the Unit Options granted under the Plan satisfy and be interpreted in a manner to achieve the result that the applicable requirements of Rule 16b-3
under the Exchange Act shall be satisfied with respect to such Employees and Directors, with the result that such Employees and Directors shall be entitled to the benefits of Rule 16b-3 or other
applicable exemptive rules under Section 16. If any provision of the Plan or of any Unit Option would otherwise frustrate or conflict with the intent of the Company set forth in the immediately preceding sentence, to the extent possible, such
provision shall be interpreted and deemed amended so as to avoid such conflict, and, to the extent of any remaining irreconcilable conflict with such intent, the provision shall, solely with respect to Employees and Directors subject to
Section 16, be deemed void. 

 NO.      

KINEX PHARMACEUTICALS, LLC 

2004 COMMON UNIT OPTION PLAN 

UNIT OPTION AGREEMENT 

THIS AGREEMENT made as of
                    , by and between Kinex Pharmaceuticals LLC a Delaware limited liability company (the “Company”), and
                     (the “Grantee”). 

WITNESSETH: 
 WHEREAS, the
Company has adopted the Kinex Pharmaceuticals LLC 2004 Common Unit Option Plan (the “Plan”) for the benefit of its Employees, Directors and Consultants; and 

WHEREAS, the Committee has authorized the grant to the Grantee of a Unit Option under the Plan, on the terms and conditions set forth in the
Plan and as hereinafter provided; 
 NOW, THEREFORE, in consideration of the premises contained herein, the Company and the Grantee hereby
agree as follows: 
  

	 	1.	Definitions. 

 Terms used in this Agreement which are defined in the Plan shall have the
same meaning as set forth in the Plan. 
  

	 	2.	Grant of Option. 

 The Committee hereby grants to the Grantee an option to purchase
                     (            ) units of the Company’s Common Units for an
Option price per Unit equal to $         per unit (the “Option”). 
  

	 	3.	Option Terms and Exercise Period. 

 (a) The Option shall be exercised,
and payment by the Grantee of the Option price shall be made, pursuant to the terms of the Plan. 
 (b) All or any part of
the Option may be exercised by the Grantee no later than the tenth anniversary of the date of this Agreement. 
 (c) This
Agreement and the Option shall terminate on the earlier of (i) the tenth anniversary of the date of this Agreement, or (ii) the date on which the Option is fully exercised. 

 NO.      

 

	 	4.	Vesting. 

 The Option shall vest and become exercisable pursuant to the following
schedule: 
 100% on the first anniversary of the date of this Agreement. 

The Grantee shall forfeit any unvested portion of the Option upon termination of his or her status as an Employee, Director or Consultant for any reason.
Notwithstanding the above schedule, upon the occurrence of a Change of Control, the Grantee shall automatically become 100% vested in the Option. 
  

	 	5.	Termination of Consultant Status. 

 Section 3 of Article II of the Plan shall
control. 
  

	 	6.	Restrictions on Transfer of Option. 

 This Agreement and the Option shall not be
transferable otherwise than (a) by will or by the laws of descent and distribution, or (b) by inter vivos gift to any Family Member, and the Option shall be exercisable, during the Grantee’s lifetime, solely by the Grantee, except on
account of the Grantee’s Disability, and solely by the transferee in the case of a transfer by inter vivos gift to a Family Member. 
  

	 	7.	Exercise of Option. 

 (a) The Option shall become exercisable at such
time as shall be provided herein or in the Plan and shall be exercisable by written notice of such exercise, in the form prescribed by the Committee, to the Secretary of the Company, at its principal office. The notice shall specify the number of
Units for which the Option is being exercised. 
 (b) Units purchased pursuant to the Option shall be paid for in full at the
time of such purchase in cash or by check, bank draft or postal or express money order or by “cashless exercise,” as prescribed by the Committee. 
  

	 	8.	Regulation by the Committee. 

 This Agreement and the Option shall be subject to any
administrative procedures and rules as the Committee shall adopt. All decisions of the Committee upon any question arising under the Plan or under this Agreement, shall be conclusive and binding upon the Grantee and any person or persons to whom any
portion of the Option has been transferred by will, by the laws of descent and distribution or by inter vivos gift to a Family Member. 
  

	 	9.	Reservation of Units. 

 With respect to the Option, the Company hereby agrees to at all
times reserve for issuance and/or delivery upon payment by the Grantee of the Option price, such number of Units as shall be required for issuance and/or delivery upon such payment pursuant to the Option. 

  
 2 

 NO.      

 

	 	10.	Delivery of Share Certificates. 

 Within a reasonable time after the exercise of the
Option the Company shall cause to be delivered to the Grantee, his legal representative or his beneficiary, a certificate for the Units purchased pursuant to the exercise of the Option. 

 

	 	11.	Amendment. 

 The Committee may amend this Agreement at any time and from time to time;
provided, however, that no amendment of this Agreement that would materially and adversely impair the Grantee’s rights or entitlements with respect to the Option shall be effective without the prior written consent of the Grantee.

  

	 	12.	Plan Terms. 

 The terms of the Plan are incorporated herein by reference. 

 

	 	13.	Effective Date of Grant. 

 The Option shall be effective as of the date first written
above. 
  

	 	14.	Grantee Acknowledgment. 

 By executing this Agreement, the Grantee hereby acknowledges
that he (a) has received and read the Plan and this Agreement and agrees to be bound by all of the terms of both the Plan and this Agreement, and (b) upon exercising any portion of the Option, shall enter into and be bound by all of the
terms of the Company’s Limited Liability Company Agreement, as amended, or any shareholders agreement if the Company converts to a corporation. 
  

									
	ATTEST:	 		 	KINEX PHARMACEUTICALS LLC	 	
				
	  
	 		 	By:	 	  

				
		 		 	Its:	 	  

				
	  
	 		 	  
	 	, Grantee

  
 3 

 NO.      

 

 ASSIGNMENT FORM 

FOR VALUE RECEIVED,
                                         hereby
sells, assigns and transfers unto 
  

			
	NAME:	 	
		 	  

		 	 (Please typewrite or print in block letters)

  

			
	ADDRESS:	 	
	  

 All of his right, title and interest to purchase Common Units of Kinex Pharmaceuticals LLC pursuant and subject to the terms
of the attached Unit Option Agreement dated                      and 2004 Common Unit Option Plan to the extent of
                     Units and does hereby irrevocably constitute and appoint
                                        ,
Attorney, to transfer the same on the books of the Company with full power of substitution in the premises. 
  

					
	DATE:	 	  
	 	, 200    

  

			
	SIGNATURE:	 	  

  
 4EX-10.3

 Exhibit 10.3 

KINEX PHARMACEUTICALS LLC 

FIRST AMENDED AND RESTATED 

2007 COMMON UNIT OPTION PLAN 

(AS OF OCTOBER 1, 2012) 
  

	I.	ESTABLISHMENT OF PLAN; DEFINITIONS 

 1. Purpose. The purpose
of this Kinex Pharmaceuticals LLC 2007 Unit Option Plan is to provide an incentive to key Employees and non-Employee Directors of, and Consultants and other independent advisors to, Kinex Pharmaceuticals LLC,
a Delaware limited liability company (the “Company”) or any of its Affiliates, who are in a position to contribute materially to the long-term success of the Company, to increase their interest in the welfare of the Company and its
Affiliates and to aid in attracting and retaining Employees, Directors and Consultants of outstanding ability. 
 2. Definitions.
Unless the context clearly indicates otherwise, the following terms shall have the meanings set forth below: 

“Affiliate” shall mean any wholly owned subsidiary or any entity in which the Company owns at least a 25% equity
interest. 
 “Board” shall mean the Board of Managers of the Company. 

“Cause” shall mean (i) for a Grantee who is a party to an employment or consulting agreement with the Company or
an Affiliate which agreement provides for a definition of “Cause” therein, “Cause” shall have the same meaning as provided for in such agreement, or (ii) for a Grantee who is not a party to such an agreement,
“Cause” shall mean repeated failure to properly perform assigned duties (after written notice of at least one such failure had previously been communicated to the Grantee by the Company), gross negligence, commission of a felony or any act
materially injurious to the financial or business prospects or affairs of the Company or an Affiliate involving dishonesty or breach of any duty of confidentiality or loyalty. 

“Change of Control” shall mean (i) for a Grantee who is a party to an employment or consulting agreement with
the Company or an Affiliate which agreement provides for a definition of “Change of Control” therein, “Change of Control” shall have the same meaning as provided for in such agreement, or (ii) for a Grantee who is not a
party to such an agreement, “Change of Control” shall mean the satisfaction of any one or more of the following conditions (and the “Change of Control” shall be deemed to have occurred as of the first day that any one or more of
the following conditions shall have been satisfied): 
 (a) Any person (as such term is used in paragraphs 13(d) and 14(d)(2)
of the Exchange Act, hereinafter in this definition, “Person”), other than the Company or an Affiliate or an employee benefit plan of the Company or an Affiliate, becomes the beneficial owner (as defined in
Rule 13d-3 under the Exchange Act), directly or indirectly, of securities of the Company representing more than 50% of the combined voting power of the Company’s then outstanding securities; 

 (b) The Company’s members approve a merger, consolidation or other business
combination (a “Business Combination”) other than a Business Combination in which holders of Common Units of the Company immediately prior to the Business Combination have substantially the same proportionate ownership of the equity of the
surviving corporation or other business entity immediately after the Business Combination as immediately before; 
 (c) The
Company’s members approve either (i) an agreement for the sale or disposition of all or substantially all of the Company’s assets to any entity that is not an Affiliate, or (ii) a plan of complete liquidation of the Company; or

 (d) The persons who were Directors immediately before a tender offer by any Person other than the Company or an Affiliate,
or before a merger, consolidation or contested election, or before any combination of such transactions, cease to constitute a majority of the members of the Board as a result of such transaction or transactions. 

“Committee” shall mean a committee designated by the Board which committee shall administer the Plan as set forth in
Section 4 of this Article I of the Plan; provided, however, that if no such committee shall be so designated, the Board shall serve as the Committee. 

“Company” shall mean Kinex Pharmaceuticals LLC, a Delaware limited liability company. 

“Consultant” shall mean any non-Employee consultant or advisor to the Company
or an Affiliate who has contracted directly with the Company or an Affiliate to render bona fide consulting or advisory services thereto. 

“Director” shall mean any individual who is a member of the Board or a member of the board of directors or managers
of an Affiliate, and who is not an Employee. 
 “Disability” shall mean the inability to engage in any substantial
gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or which has lasted or can be expected to last for a continuous period of not less than 12 months. 

“Employee” shall mean any employee, including officers, of the Company or an Affiliate. 

“Exchange Act” shall mean the Securities Exchange Act of 1934, as amended. 

“Fair Market Value” shall mean on any date, (i) if the Units is not listed on a national securities exchange or
quoted on Nasdaq, the fair market value of the Units on that date as determined by the Board, or (ii) if the Units is listed on a national securities exchange or is quoted on Nasdaq, the closing price reported on the composite tape for issues
listed on such exchange on such date, or the closing price or the average of the closing dealer “bid” and “asked” prices for the Units as quoted on Nasdaq, or if no trades shall have been reported for such date, on the next
preceding date on which there were such trades reported; provided, however, that if no quotations shall have been made within the 10 business days immediately preceding such date, Fair Market Value shall be determined by the Board.

  
 2 

 “Family Member” shall mean, with respect to a Grantee, any child,
stepchild, grandchild, parent, stepparent, spouse, former spouse, sibling, niece, nephew, mother-in-law,
father-in-law, brother-in-law or sister-in-law, including adoptive relationships, any person sharing the Grantee’s household (other than a tenant of the Grantee), a trust in which such persons have more than 50% of the beneficial
interest, a foundation in which such persons (or the Grantee) control the management of assets and any other entity in which such persons (or the Grantee) own more than 50% of the voting interests. 

“Grantee” shall mean an Employee, Director or Consultant who has been granted a Unit Option under the Plan. 

“Nasdaq” shall mean the National Association of Securities Dealers Automated Quotation System. 

“Public Offering” means the first offer and sale to the public by the Company (including any successor) or any
holders of shares of Common Units subsequent to the date of this Agreement, pursuant to a registration statement that has been declared effective by the securities regulatory authority in the applicable jurisdiction. 

“Unit Option” shall mean a Unit Option granted to an Employee, Director or Consultant pursuant to the provisions set
forth in Article II of the Plan. 
 “Option Period” shall mean the term of a Unit Option as fixed by the
Committee. 
 “Plan” shall mean this Kinex Pharmaceuticals, LLC 2007 Common Unit Option Plan as set forth herein
and as amended from time to time. 
 “Units” shall mean authorized but unissued shares of the Common Units of the
Company or reacquired units of the Company’s Common Units. 
 “Unit Option” shall mean an option granted
pursuant to the Plan to purchase Units. 
 “Unit Option Agreement” shall mean the written instrument evidencing the
grant of one or more Unit Options under the Plan and which shall contain the terms and conditions applicable to such grant. 
 3.
“Units Subject to the Plan. There are hereby reserved for issuance under the Plan 300,000 Units. If a Unit Option shall expire and terminate for any reason, in whole or in part, without being exercised, the number of Units
as to which such expired or terminated Unit Option shall not have been exercised may again become available for the grant of new Unit Options hereunder. 

  
 3 

 4. Administration of the Plan. The Plan shall be administered by the Committee. Subject to
the express provisions of the Plan, the Committee shall have authority to determine the eligibility of Employees, Directors and Consultants to participate in the Plan, to grant Unit Options under the Plan, to interpret the Plan, to prescribe, amend,
and rescind rules and regulations relating to the Plan, to determine the terms and provisions of Unit Option Agreements and to make all other determinations necessary or advisable for the administration of the Plan. Any controversy or claim arising
out of or related to the Plan shall be determined unilaterally by and in the sole discretion of the Committee. Any determination, decision or action of the Committee in connection with the construction, interpretation, administration, implementation
or maintenance of the Plan shall be final, conclusive and binding upon all Grantees and all person(s) claiming under or through any Grantees. 

Should the Units become publicly traded, there shall be 2 Committees under the Plan. Solely for the purpose of Unit Options granted under the
Plan to Employees and Directors who are subject to Section 16 of the Exchange Act, a special Committee comprised solely of 2 or more individuals who are “non-employee directors” (as such term is
defined in Rule 16b-3(b)(3) under the Exchange Act), shall administer the Plan to satisfy the applicable requirements of Rule 16b-3 with respect to such
Employees and Directors. For all other purposes of the Plan, the regular Committee shall administer the Plan. 
 Notwithstanding anything
contained in this Section 4 to the contrary, no member of the Committee shall have the authority to render any decision with respect to his or her participation in or entitlement to benefits under the Plan. 

5. Amendment or Termination. The Board may, at any time, alter, amend, suspend, discontinue, or terminate the Plan; provided,
however, that no such action shall adversely affect the right of any Grantee under any Unit Option previously granted thereto hereunder. 

6. Effective Date of Plan. The Plan originally became effective on January 15, 2007, and this amendment and restatement shall
become effective as of October 1, 2012 and shall apply to all outstanding Unit Options and future Unit Options issued under this Plan 
  

	II.	UNIT OPTION PROVISIONS. 

 1. Granting of Unit Options. 

(a) Employees, Directors and Consultants shall be eligible to receive Unit Options under the Plan. 

(b) The Committee shall determine and shall designate from time to time those Employees, Directors or Consultants who are to be
granted Unit Options and shall specify the number of Units subject to each Unit Option. 

  
 4 

 (c) The Committee may grant at any time new Unit Options to an Employee, Director
or Consultant who has previously received Unit Options or other Unit Options, whether such prior Unit Options or other Unit Options are then outstanding, have previously been exercised in whole or in part or are canceled in connection with the
issuance of new Unit Options. 
 (d) When granting a Unit Option, the Committee shall determine the purchase price of the
Units subject thereto. 
 (e) The Committee, in its sole discretion, shall determine whether any particular Unit Option shall
become exercisable in one or more installments, specify the installment dates and, within the limitations herein provided, determine the total period during which the Unit Option shall be exercisable. Further, the Committee may make such other
provisions as may be generally acceptable or desirable in the opinion of the Committee. 
 2. Exercise of Unit Options. The purchase
price of Units subject to a Unit Option shall be payable upon its exercise in cash or by certified check, bank draft or postal or express money order. In addition, the Committee, in its discretion, may permit a Grantee to make partial or full
payment of the purchase price by utilization of a “cashless exercise” or any other method made available by the Committee. 
 3.
Termination of Employment, Director Status or Consulting Engagement. Except as provided otherwise in the applicable Unit Option Agreement (in which case the provisions of the Unit Option Agreement shall control over the provisions of this
Section 3): 
 (a) Except as provided in paragraphs (b) and (c) below, if the employment with the Company or
an Affiliate of a Grantee who is an Employee is terminated other than by the Company or Affiliate for Cause, only those Unit Options held by the Grantee which were immediately exercisable at the termination of the Grantee’s employment shall be
exercisable by the Grantee following the termination of the Grantee’s employment. Such Unit Options must be exercised prior to the expiration of the Option Period or they shall be forfeited. 

(b) Notwithstanding anything to the contrary contained in paragraph (a) above, if the employment with the Company or an
Affiliate of a Grantee who is an Employee is terminated by the Company or Affiliate for Cause, all then outstanding Unit Options held by the Grantee shall expire immediately and such Unit Options shall not be exercisable after the termination of the
Grantee’s employment. 
 (c) Notwithstanding anything to the contrary contained in paragraphs (a) and
(b) above, if the employment with the Company or an Affiliate of a Grantee who is an Employee is terminated on account of the Grantee’s death or Disability, only those Unit Options held by the Grantee which were immediately exercisable at
the date of the Grantee’s death or Disability, as applicable, shall be exercisable by the Grantee, the representative of the Grantee’s estate or the Grantee’s beneficiaries to whom the
Non-Qualified Unit Options have been transferred. Such Unit Options must be exercised prior to the expiration of the Option Period, or they shall be forfeited. 

  
 5 

 (d) If a Grantee’s status as a Director or engagement as a Consultant shall
terminate other than by the Company or Affiliate for Cause, without such Grantee thereupon becoming an Employee, only those Unit Options held by the Grantee which were immediately exercisable at the termination of the Grantee’s status as a
Director or engagement as a Consultant, as applicable, shall be exercisable by the Grantee following such termination. Such Unit Options must be exercised prior to the expiration of the Option Period or they shall be forfeited. Notwithstanding the
foregoing, if a Grantee’s status as a Director or engagement as a Consultant shall terminate for Cause, all then outstanding Unit Options held by the Grantee shall expire immediately and such Unit Options shall not be exercisable after the
termination of the Grantee’s status as a Director or engagement as a Consultant. 
  

	III.	SPECIAL RULES. 

 Vesting. All Unit Options outstanding on October 1,
2012 shall be fully vested notwithstanding any language to the contrary in Unit Option Agreement. Upon the occurrence of a Change of Control or a Public Offering, all Unit Options shall automatically become immediately exercisable (100% vested).

  

	IV.	GENERAL PROVISIONS. 

 1. Recapitalization Adjustments. 

(a) In the event of any change in capitalization affecting the Units, including, without limitation, a Units dividend or other
distribution, Units split, reverse Units split, recapitalization, consolidation, subdivision, split-up, spin-off, split-off,
combination or exchange of shares or other form of reorganization or recapitalization, or any other change affecting the Units, the Board shall authorize and make such proportionate adjustments, if any, as the Board shall deem appropriate to reflect
such change, including, without limitation, with respect to the aggregate number of shares of Units for which Unit Options in respect thereof may be granted under the Plan, the number of shares of Units covered by each outstanding Unit Option, and
the purchase price per share of Units in respect of outstanding Unit Options. 
 (b) Any provision hereof to the contrary
notwithstanding, in the event the Company is a party to a merger or other reorganization, the Board shall determine the treatment of outstanding Unit Options, which treatment may include the assumption of outstanding Unit Options by the surviving
company or its parent, their continuation by the Company (if the Company is the surviving company), accelerated vesting or accelerated expiration, or settlement in cash. 

2. General. 

(a) Each Unit Option shall be evidenced by a Unit Option Agreement. 

  
 6 

 (b) The granting of a Unit Option in any year shall not give the Grantee any
right to similar grants in future years or any right to be retained as an Employee, Director or Consultant, and all Grantees shall remain subject to discharge or removal to the same extent as if the Plan were not in effect. 

(c) No Grantee, and no beneficiary or other person claiming under or through him, shall have any right, title or interest by
reason of any Unit Option to any particular assets of the Company, or any shares of Units allocated or reserved for the purposes of the Plan or subject to any Unit Option except as set forth herein. 

(d) No Unit Option shall or may be sold, exchanged, assigned, pledged, encumbered, or otherwise hypothecated or disposed of
except by will or the laws of descent and distribution, and a Unit Option shall be exercisable during the Grantee’s lifetime solely by the Grantee or his conservator. Notwithstanding the immediately preceding sentence, a Unit Option may be
transferred by the Grantee as an inter vivos gift to a Family Member. 
 (e) Notwithstanding any other provision of the Plan
or agreements made pursuant thereto, the Company’s obligation to issue or deliver any certificate or certificates for shares of Units under a Unit Option, and the transferability of Units acquired by exercise of a Unit Option, shall be subject
to all of the following conditions: 
 (i) Any registration or other qualification of such shares under any state or federal
law or regulation, or the maintaining in effect of any such registration or other qualification which the Board shall, in its absolute discretion upon the advice of counsel, deem necessary or advisable; 

(ii) The obtaining of any other consent, approval, or permit from any state or federal governmental agency which the Board
shall, in its absolute discretion upon the advice of counsel, determine to be necessary or advisable; and 
 (iii) Each Unit
certificate issued pursuant to a Unit Option shall bear such legends which the Company shall determine, in its absolute discretion, are necessary or advisable, or which in the opinion of counsel to the Company are required under applicable federal
or state securities laws. 
 (f) All payments to Grantees or to their legal representatives shall be subject to any
applicable tax, community property, or other statutes or regulations of the United States or of any state having jurisdiction thereof. If the Grantee is an Employee, the Grantee may be required to pay to the Company the amount of any withholding
taxes which the Committee, in its sole discretion, deems necessary to be withheld in order to comply with any applicable statutes or regulations with respect to a Unit Option or its exercise. In the event that such payment is not made when due, the
Company shall have the right to deduct, to the extent permitted by law, from any payment or settlement of any kind otherwise due to such person, all or part of the amount required to be withheld. The Company shall not be required to issue Units
pursuant to the exercise of a Unit Option until such applicable obligations, if any, shall have been satisfied. 

  
 7 

 (g) The Company shall issue any Unit certificates required to be issued in
connection with the exercise of a Unit Option with reasonable promptness following such exercise. 
 (h) The Plan and the
grant or exercise of Unit Options granted under the Plan shall be subject to, and shall in all respects comply with, the applicable laws of Delaware. 

(i) Should the participation of any Employee or Director in the Plan be subject to Section 16 of the Exchange Act, it is
the express intent of the Company that the Plan and the Unit Options granted under the Plan satisfy and be interpreted in a manner to achieve the result that the applicable requirements of Rule 16b-3
under the Exchange Act shall be satisfied with respect to such Employees and Directors, with the result that such Employees and Directors shall be entitled to the benefits of Rule 16b-3 or other
applicable exemptive rules under Section 16. If any provision of the Plan or of any Unit Option would otherwise frustrate or conflict with the intent of the Company set forth in the immediately preceding sentence, to the extent possible, such
provision shall be interpreted and deemed amended so as to avoid such conflict, and, to the extent of any remaining irreconcilable conflict with such intent, the provision shall, solely with respect to Employees and Directors subject to
Section 16, be deemed void. 

  
 8 

 NO.      

KINEX PHARMACEUTICALS, LLC 

2007 COMMON UNIT OPTION PLAN 

UNIT OPTION AGREEMENT 

THIS AGREEMENT made as of
                    , by and between Kinex Pharmaceuticals LLC a Delaware limited liability company (the “Company”), and
                     (the “Grantee”). 

WITNESSETH: 
 WHEREAS, the
Company has adopted the Kinex Pharmaceuticals LLC 2007 Common Unit Option Plan, as amended (the “Plan”) for the benefit of its Employees, Directors and Consultants; and 

WHEREAS, the Committee has authorized the grant to the Grantee of a Unit Option under the Plan, on the terms and conditions set forth in the
Plan and as hereinafter provided; 
 NOW, THEREFORE, in consideration of the premises contained herein, the Company and the Grantee hereby
agree as follows: 
  

	 	1.	Definitions. 

 Terms used in this Agreement which are defined in the Plan shall have the
same meaning as set forth in the Plan. 
  

	 	2.	Grant of Option. 

 The Committee hereby grants to the Grantee an option to purchase
                     (        ) units of the Company’s Common Units for an Option price per Unit
equal to $         per unit (the “Option”). 
  

	 	3.	Option Terms and Exercise Period. 

 (a) The Option shall be exercised,
and payment by the Grantee of the Option price shall be made, pursuant to the terms of the Plan. 
 (b) All or any part of
the Option may be exercised by the Grantee no later than the tenth anniversary of the date of this Agreement. 
 (c) This
Agreement and the Option shall terminate on the earlier of (i) the tenth anniversary of the date of this Agreement, or (ii) the date on which the Option is fully exercised. 

 NO.      

 

	 	4.	Vesting. 

 The Option shall vest and become exercisable pursuant to the following
schedule: 
 (i) 50% upon the date of this Agreement; and 

(ii) 50% upon the first anniversary of this Agreement. 

The Grantee shall forfeit any unvested portion of the Option upon termination of his or her status as an Employee, Director or Consultant for any reason.
Notwithstanding the above schedule, upon the occurrence of a Change of Control or a Public Offering, the Grantee shall automatically become 100% vested in the Option. For purposes of the Option, “Public Offering” shall mean an initial
public offering, reverse merger or other transaction resulting in a class of securities of the Company being sold through one or more public markets and that results in additional cash investment in the Company of at least $15,000,000. 

 

	 	5.	Termination of Consultant Status. 

 Except for the mandatory exercise periods set forth
in the last sentence of subsection (a), last sentence of subsection (c) and second sentence of subsection (d), Section 3 of Article II of the Plan shall control. 
  

	 	6.	Restrictions on Transfer of Option. 

 This Agreement and the Option shall not be
transferable otherwise than (a) by will or by the laws of descent and distribution, or (b) by inter vivos gift to any Family Member, and the Option shall be exercisable, during the Grantee’s lifetime, solely by the Grantee, except on
account of the Grantee’s Disability, and solely by the transferee in the case of a transfer by inter vivos gift to a Family Member. 
  

	 	7.	Exercise of Option. 

 (a) The Option shall become exercisable at such
time as shall be provided herein or in the Plan and shall be exercisable by written notice of such exercise, in the form prescribed by the Committee, to the Secretary of the Company, at its principal office. The notice shall specify the number of
Units for which the Option is being exercised. 
 (b) Units purchased pursuant to the Option shall be paid for in full at the
time of such purchase in cash or by check, bank draft or postal or express money order or by “cashless exercise,” as prescribed by the Committee. 
  

	 	8.	Regulation by the Committee. 

 This Agreement and the Option shall be subject to any
administrative procedures and rules as the Committee shall adopt. All decisions of the Committee upon any question arising under the Plan or under this Agreement, shall be conclusive and binding upon the Grantee and any person or persons to whom any
portion of the Option has been transferred by will, by the laws of descent and distribution or by inter vivos gift to a Family Member. 

  
 2 

 NO.      

 

	 	9.	Reservation of Units. 

 With respect to the Option, the Company hereby agrees to at all
times reserve for issuance and/or delivery upon payment by the Grantee of the Option price, such number of Units as shall be required for issuance and/or delivery upon such payment pursuant to the Option. 

 

	 	10.	Delivery of Share Certificates. 

 Within a reasonable time after the exercise of the
Option the Company shall cause to be delivered to the Grantee, his legal representative or his beneficiary, a certificate for the Units purchased pursuant to the exercise of the Option. 

 

	 	11.	Amendment. 

 The Committee may amend this Agreement at any time and from time to time;
provided, however, that no amendment of this Agreement that would materially and adversely impair the Grantee’s rights or entitlements with respect to the Option shall be effective without the prior written consent of the Grantee.

  

	 	12.	Plan Terms. 

 The terms of the Plan are incorporated herein by reference. 

 

	 	13.	Effective Date of Grant. 

 The Option shall be effective as of the date first written
above. 
  

	 	14.	Grantee Acknowledgment. 

 By executing this Agreement, the Grantee hereby acknowledges
that he (a) has received and read the Plan and this Agreement and agrees to be bound by all of the terms of both the Plan and this Agreement, and (b) upon exercising any portion of the Option, shall enter into and be bound by all of the
terms of the Company’s Limited Liability Company Agreement, as amended, or any shareholders agreement if the Company converts to a corporation. 
  

									
	ATTEST:	 		 	KINEX PHARMACEUTICALS LLC	 	
				
	  
	 		 	By:	 	  

		 		 		 	Johnson Lau, CEO	 	
					
	  
	 		 		 	  
	 	, Grantee

  
 3 

 NO.      

KINEX PHARMACEUTICALS, LLC 

PURCHASE FORM 

DATED:            , 20     

The undersigned hereby irrevocably elects to exercise Kinex Pharmaceuticals, LLC Option No.     to the extent of purchasing
                     units of Common Units and hereby makes a payment of $         in payment of the actual
exercise price thereof. 
 INSTRUCTIONS FOR REGISTRATION OF UNITS 
  

			
	NAME:	  	  

			
	(Please typewrite or print in block letters)

			
		
	ADDRESS:	  	  

			
		
	SIGNATURE:	  	  

  
 4

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