Exhibit 10.26





 


Protalex, Inc.


131 Columbia Turnpike, Suite 1


Florham Park, New Jersey 07392


 





	 	July 15, 2016



 





Niobe Ventures, LLC


410 Park Ave


New York, NY 10022


 


Re:
Agreement to Exchange Outstanding Debt


 


Gentlemen:


 


This will confirm the agreement we have
reached with respect to the outstanding debt due and owing from Protalex, Inc. (“Protalex”) to Niobe Ventures, LLC
(“Niobe”) as evidenced by promissory notes issued by Protalex to Niobe (the “Notes”).


 


Simultaneous with the effectiveness of the
Company’s Registration Statement on Form S-1 (SEC File No. 333-206008) with respect to a “Qualified Public Offering”,
the Company and Niobe hereby unconditionally agree to exchange, concurrently with the closing of such Qualified Public Offering,
the full principal amount of the Notes and fifty (50%) percent of the accrued and unpaid interest due under the Notes for shares
of Protalex common stock, par value $.00001 per share (“Common Stock”), at the price per share that Common Stock is
sold to the public investors in a Qualified Public Offering. Upon such exchange, the outstanding indebtedness represented by the
Notes and all of the rights, duties and obligations of all parties to the credit facility agreements relating to the Notes, the
Notes and the related security agreements shall immediately terminate, other than Niobe’s right to the payment in cash of
accrued and unpaid interest under the Notes as provided for below.


 


A “Qualified Public Offering”
shall mean a public offering of Protalex Common Stock yielding gross proceeds to Protalex of at least $7.0 million.


 


Within five business days following the
closing of a Qualified Public Offering, fifty (50%) percent all accrued and unpaid interest due under the Notes shall be paid to
Niobe in cash.


 


Niobe agrees and acknowledges that the shares
of Common Stock to be issued to Niobe upon conversion of the Notes as contemplated by this letter agreement (the “Shares”)
will be “restricted securities” and that the Shares have not been registered under the Securities Act of 1933, as amended
(the “Securities Act”), or any applicable state securities law and that it is acquiring the Shares as principal for
its own account and not with a view to or for distributing or reselling such Shares or any part thereof in violation of the Securities
Act or any applicable state securities law, has no present intention of distributing any of such Shares in violation of the Securities
Act or any applicable state securities law and has no direct or indirect arrangement or understandings with any other persons to
distribute or regarding the distribution of such Shares in violation of the Securities Act or any applicable state securities law
(this representation and warranty not limiting such Purchaser’s right to sell the Shares otherwise in compliance with applicable
federal and state securities laws). Niobe further agrees to enter into a customary lockup agreement covering all such Shares in
favor of the underwriter of the Qualified Public Offering on the same terms as shall apply to the Company and its officers and
directors.


 



     


     


    




Upon issuance of the Shares as contemplated
by this letter agreement, the Shares shall be duly authorized, full paid and nonassessable shares of Common Stock.


 


In furtherance of the transactions contemplated
by this letter agreement, each of Protalex and Niobe, at any time or from time to time after the date hereof, agree to cooperate
with each other, and at the request of the other party, to execute and deliver any further instruments or documents and to take
all such further action as the other party or any underwriter of such Qualified Public Offering may reasonably request in order
to evidence or effectuate the consummation of the transactions contemplated hereby and to otherwise carry out the intent of the
parties hereto.


 


In the event that a Qualified Public Offering
is not consummated on or before October 31, 2016 as contemplated by the related underwriting agreement, then this letter agreement
and the rights and obligations hereunder shall be null and void, ab initio.


 


This agreement amends and restates the Agreement
to Exchange Outstanding Debt entered into between the parties hereto on June 3, 2016 and supersedes that agreement in all respects.


 


 





	 	Sincerely,


 


PROTALEX,
INC.


 


 


By:
/s/ Kirk Warshaw                      

Kirk Warshaw


Chief
Financial Officer





 


 





AGREED TO AND ACCEPTED:


 


NIOBE VENTURES, LLC


 


By: /s/ Arnold P. Kling                    


Arnold
P. Kling, Manager