Exhibit 10.83


 


STOCK OPTION AGREEMENT,
made as of the 4th day of September, 2015, between BIORESTORATIVE THERAPIES, INC., a Delaware corporation (the
“Company”), and CHARLES S. RYAN, J.D., PH.D.  (the “Optionee”).


 


 






 


WHEREAS, the
Optionee serves as a director of the Company; and


 


WHEREAS, the
Company desires to provide to the Optionee an additional incentive to promote the success of the Company.


 


NOW, THEREFORE,
in consideration of the foregoing, the Company hereby grants to the Optionee the right and option to purchase shares of Common
Stock of the Company under and pursuant to the terms and conditions of the Company’s 2010 Equity Participation Plan (the
“Plan”) and upon and subject to the following terms and conditions:


 


1.             GRANT
OF OPTION. The Company hereby grants to the Optionee the right and option (the “Option”) to purchase up to
Twenty Thousand (20,000) shares of Common Stock of the Company (the “Option Shares”) during the following periods:


 


(a)          All
or any part of Ten Thousand (10,000) shares of Common Stock may be purchased during the period commencing on the date hereof and
terminating at 5:00 P.M. on September 4, 2025 (the “Expiration Date”).


 


(b)          All
or any part of Three Thousand Three Hundred Thirty-Four (3,334) shares of Common Stock may be purchased during the period commencing
on the date hereof and terminating at 5:00 P.M. on the Expiration Date.


 


(c)          All
or any part of Three Thousand Three Hundred Thirty-Three (3,333) shares of Common Stock may be purchased during the period commencing
at 12:01 A.M on September 4, 2017 and terminating at 5:00 P.M. on the Expiration Date.


 


(d)          All
or any part of Three Thousand Three Hundred Thirty-Three (3,333) shares of Common Stock may be purchased during the period commencing
at 12:01 A.M on September 4, 2018 and terminating at 5:00 P.M. on the Expiration Date.


 


2.             NATURE
OF OPTION. The Option is not intended to meet the requirements of Section 422 of the Internal Revenue Code of 1986, as
amended, relating to “incentive stock options”.


 


3.             EXERCISE
PRICE. The exercise price of each of the Option Shares shall be Seven Dollars ($7.00) (the “Exercise Price”).
The Company shall pay all original issue or transfer taxes on the exercise of the Option.


 


4.             EXERCISE
OF OPTIONS. (a) The Option shall be exercised in accordance with the provisions of the Plan. As soon as practicable after
the receipt of notice of exercise and payment of the Exercise Price as provided for in the Plan, the Company shall tender to the
Optionee a certificate issued in the Optionee’s name evidencing the number of Option Shares covered thereby.


 




     


     


    

 


(b)          The
Company agrees that, as contemplated in Section 13(b) of the Plan, the Optionee may elect to have the Company reduce the number
of Option Shares otherwise issuable by a number of Option Shares having a Fair Market Value (as defined in the Plan) equal to the
exercise price of the Option being exercised. In the event of such election, the Company shall issue to the Optionee a number of
Option Shares computed using the following formula:


 


	 	X	=	Y (A-B)
	 	 	 	     A
	 	 	 	 
	 	Where X	=	the number of Option Shares to be issued to the Optionee
	 	 	 	 
	 	Y	=	the number of Option Shares subject to this Option (or the portion thereof being cancelled)
	 	 	 	 
	 	A	=	the Fair Market Value of one Option Share
	 	 	 	 
	 	B	=	the Exercise Price


 


5.             TRANSFERABILITY.
The Option shall not be transferable other than by will or the laws of descent and distribution and, during the Optionee’s
lifetime, shall not be exercisable by any person other than the Optionee.


 


6.             TERMINATION
OF DIRECTORSHIP. To the extent the Option has become exercisable at the time of any termination of directorship with the
Company or its subsidiaries for any reason whatsoever, the Option shall remain exercisable until twelve (12) months following such
termination but in no event shall the Option be exercisable after the Expiration Date.


 


7.             SHAREHOLDER
APPROVAL. Notwithstanding anything herein to the contrary, the exercisability of the Option is subject to the approval
by the shareholders of the Company of an increase in the number of shares of Common Stock of the Company issuable pursuant to the
Plan from 1,000,000 to 2,000,000 or such greater number of shares of Common Stock as the Compensation Committee of the Board of
Directors of the Company shall determine to submit for shareholder approval (“Shareholder Approval”). In the event
Shareholder Approval is not obtained within one year of the date hereof, the Option shall become null and void.


 


8.             INCORPORATION
BY REFERENCE. The terms and conditions of the Plan are hereby incorporated by reference and made a part hereof.


 




    2 


     


    

 


9.             NOTICES.
Any notice or other communication given hereunder shall be deemed sufficient if in writing and hand delivered or sent by registered
or certified mail, return receipt requested, addressed to the Company, 40 Marcus Drive, Suite One, Melville, New York 11747, Attention:
Chief Executive Officer, and to the Optionee at the address indicated below. Notices shall be deemed to have been given on the
date of hand delivery or mailing, except notices of change of address, which shall be deemed to have been given when received.


 


10.           BINDING
EFFECT. This Stock Option Agreement shall be binding upon and inure to the benefit of the parties hereto and their respective
legal representatives, successors and assigns.


 


11.           ENTIRE
AGREEMENT. This Stock Option Agreement, together with the Plan, contains the entire understanding of the parties hereto
with respect to the subject matter hereof and may be modified only by an instrument executed by the party sought to be charged.


 


12.           GOVERNING
LAW. This Stock Option Agreement shall be governed by, and construed in accordance with, the laws of the State of Delaware,
excluding choice of law rules thereof.


 


13.           EXECUTION
IN COUNTERPARTS. This Stock Option Agreement may be executed in counterparts, each of which shall be deemed to be an original,
but both of which together shall constitute one and the same instrument.


 


14.           FACSIMILE
SIGNATURES. Signatures hereon which are transmitted via facsimile, or other electronic image, shall be deemed original
signatures.


 


15.           INTERPRETATION;
HEADINGS. The provisions of this Stock Option Agreement shall be interpreted in a reasonable manner to give effect to the
intent of the parties hereto. The headings and captions under sections and paragraphs of this Stock Option Agreement are for convenience
of reference only and do not in any way modify, interpret or construe the intent of the parties or affect any of the provisions
of this Stock Option Agreement.


 


[Remainder of page
intentionally left blank; signature page follows]


 




    3 


     


    

 


IN WITNESS WHEREOF, the
parties have executed this Stock Option Agreement as of the day and year first above written.


 


	 	BIORESTORATIVE THERAPIES, INC.
	 	 
	 	By:	 
	 	 	Name: Mark Weinreb
	 	 	Title: Chief Executive Officer
	 	 	 
	 	 	 
	 	 	Signature of Optionee
	 	 	 
	 	 	Charles S. Ryan
	 	 	Name of Optionee 
	 	 	 
	 	 	 
	 	 	Address of Optionee


 




    4