Document:

SECURITIES
PURCHASE AGREEMENT

This
Securities Purchase Agreement (this “Agreement”) is dated as of June 24, 2015, between Generex Biotechnology
Corporation, a Delaware corporation (the “Company”), and each purchaser identified on the signature pages hereto
(each, including its successors and assigns, a “Purchaser” and collectively, the “Purchasers”).

WHEREAS,
subject to the terms and conditions set forth in this Agreement and pursuant to Section 4(2) of the Securities Act of 1933, as
amended (the “Securities Act”), and Rule 506 promulgated thereunder, the Company desires to issue and sell
to each Purchaser, and each Purchaser, severally and not jointly, desires to purchase from the Company, securities of the Company
as more fully described in this Agreement.

NOW,
THEREFORE, IN CONSIDERATION of the mutual covenants contained in this Agreement, and for other good and valuable consideration,
the receipt and adequacy of which are hereby acknowledged, the Company and each Purchaser agree as follows:

ARTICLE
I. 

DEFINITIONS

1.1             
Definitions. In addition to the terms defined elsewhere in this Agreement: (a) capitalized terms that are not otherwise
defined herein have the meanings given to such terms in the Certificate of Designation (as defined herein), and (b) the following
terms have the meanings set forth in this Section 1.1:

“Acquiring
Person” shall have the meaning ascribed to such term in Section 4.7.

“Action”
shall have the meaning ascribed to such term in Section 3.1(j).

“Affiliate”
means any Person that, directly or indirectly through one or more intermediaries, controls or is controlled by or is under common
control with a Person, as such terms are used in and construed under Rule 405 under the Securities Act.

“Authorized
Share Approval” means (i) the vote by the stockholders of the Company to approve an amendment to the Company’s
certificate of incorporation to increase the number of authorized shares of Common Stock from 1,500,000,000 to 2,450,000,000 (the
“Amendment”) and (ii) the filing by the Company of the Amendment with the Secretary of State of the State of
Delaware and the acceptance of the Amendment by the Secretary of State of the State of Delaware.

“Authorized
Share Approval Date” means the date on which Authorized Share Approval is obtained and deemed effective.

“Board
of Directors” means the board of directors of the Company.

“Business
Day” means any day except any Saturday, any Sunday, any day which is a federal legal holiday in the United States or
any day on which banking institutions in the State of New York are authorized or required by law or other governmental action
to close.

“Certificate
of Designation” means the Certificate of Designation to be filed prior to the Closing by the Company with the Secretary
of State of Delaware, in the form of Exhibit A attached hereto.

“Closing”
means the closing of the purchase and sale of the Securities pursuant to Section 2.1.

“Closing
Date” means the Trading Day on which all of the Transaction Documents have been executed and delivered by the applicable
parties thereto, and all conditions precedent to (i) the Purchasers’ obligations to pay the Subscription Amount and (ii)
the Company’s obligations to deliver the Securities, in each case, have been satisfied or waived, but in no event later
than the third Trading Day following the date hereof.

“Commission”
means the United States Securities and Exchange Commission.

“Common
Stock” means the common stock of the Company, par value $0.001 per share, and any other class of securities into which
such securities may hereafter be reclassified or changed.

“Common
Stock Equivalents” means any securities of the Company or the Subsidiaries which would entitle the holder thereof to
acquire at any time Common Stock, including, without limitation, any debt, preferred stock, right, option, warrant or other instrument
that is at any time convertible into or exercisable or exchangeable for, or otherwise entitles the holder thereof to receive,
Common Stock.

“Company
Counsel” means Eckert Seamans Cherin & Mellott, LLC, with offices located at50 S. 16th Two Liberty Place,
22nd Floor, Philadelphia, PA 19102.

“Conversion
Price” shall have the meaning ascribed to such term in the Certificate of Designation.

“Disclosure
Schedules” means the Disclosure Schedules of the Company delivered concurrently herewith.

“EGS”
means Ellenoff Grossman & Schole LLP, with offices located at 1345 Avenue of the Americas, New York, New York 10105.

“Effective
Date” means the earliest of the date that (a) the initial Registration Statement has been declared effective by the
Commission, (b) all of the Underlying Shares have been sold pursuant to Rule 144 or may be sold pursuant to Rule 144 without the
requirement for the Company to be in compliance with the current public information required under Rule 144 and without volume
or manner-of-sale restrictions or (c) following the one year anniversary of the Closing Date provided that a holder of Underlying
Shares is not an Affiliate of the Company, all of the Underlying Shares may be sold pursuant to an exemption from registration
under Section 4(1) of the Securities Act without volume or manner-of-sale restrictions and Company Counsel has delivered to such
holders a standing written unqualified opinion that resales may then be made by such holders of the Underlying Shares pursuant
to such exemption which opinion shall be in form and substance reasonably acceptable to such holders.

“Evaluation
Date” shall have the meaning ascribed to such term in Section 3.1(r).

“Exchange
Act” means the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated thereunder.

“Exempt
Issuance” means the issuance of (a) shares of Common Stock or options to employees, officers or directors of the Company
pursuant to any stock or option plan duly adopted for such purpose, by a majority of the non-employee members of the Board of
Directors or a majority of the members of a committee of non-employee directors established for such purpose, for services rendered
to the Company, (b) securities upon the exercise or exchange of or conversion of any Securities issued hereunder and/or other
securities exercisable or exchangeable for or convertible into shares of Common Stock issued and outstanding on the date of this
Agreement, provided that such securities have not been amended since the date of this Agreement to increase the number of such
securities or to decrease the exercise price, exchange price or conversion price of such securities, and (c) securities issued
pursuant to acquisitions or strategic transactions approved by a majority of the disinterested directors of the Company, provided
that any such issuance shall only be to a Person (or to the equityholders of a Person) which is, itself or through its subsidiaries,
an operating company or an owner of an asset in a business synergistic with the business of the Company and shall provide to the
Company additional benefits in addition to the investment of funds, but shall not include a transaction in which the Company is
issuing securities primarily for the purpose of raising capital or to an entity whose primary business is investing in securities.

“FCPA”
means the Foreign Corrupt Practices Act of 1977, as amended.

“FDA”
shall have the meaning ascribed to such term in Section 3.1(gg).

“FDCA”
shall have the meaning ascribed to such term in Section 3.1(gg).

“GAAP”
shall have the meaning ascribed to such term in Section 3.1(h).

“Indebtedness”
shall have the meaning ascribed to such term in Section 3.1(aa).

“Intellectual
Property Rights” shall have the meaning ascribed to such term in Section 3.1(o).

“Legend
Removal Date” shall have the meaning ascribed to such term in Section 4.1(c).

“Liens”
means a lien, charge, pledge, security interest, encumbrance, right of first refusal, preemptive right or other restriction.

“Material
Adverse Effect” shall have the meaning assigned to such term in Section 3.1(b).

“Material
Permits” shall have the meaning ascribed to such term in Section 3.1(m).

“Maximum
Rate” shall have the meaning ascribed to such term in Section 5.17.

“Participation
Maximum” shall have the meaning ascribed to such term in Section 4.12(a).

“Person”
means an individual or corporation, partnership, trust, incorporated or unincorporated association, joint venture, limited liability
company, joint stock company, government (or an agency or subdivision thereof) or other entity of any kind.

“Pharmaceutical
Product” shall have the meaning ascribed to such term in Section 3.1(gg).

“Preferred
Stock” means the 1,000 shares of the Company’s 9% Series G Convertible Preferred Stock issued or issuable hereunder
having the rights, preferences and privileges set forth in the Certificate of Designation, in the form of Exhibit A hereto.

“Pre-Notice”
shall have the meaning ascribed to such term in Section 4.12(b).

“Pro
Rata Portion” shall have the meaning ascribed to such term in Section 4.12(e).

“Proceeding”
means an action, claim, suit, investigation or proceeding (including, without limitation, an informal investigation or partial
proceeding, such as a deposition), whether commenced or threatened.

“Public
Information Failure” shall have the meaning ascribed to such term in Section 4.3(b).

“Public
Information Failure Payments” shall have the meaning ascribed to such term in Section 4.3(b).

“Purchaser
Party” shall have the meaning ascribed to such term in Section 4.10.

“Registration
Rights Agreement” means the Registration Rights Agreement, dated the date hereof, among the Company and the Purchasers,
in the form of Exhibit D attached hereto.

“Registration
Statement” means a registration statement meeting the requirements set forth in the Registration Rights Agreement and
covering the resale of the Underlying Shares by each Purchaser as provided for in the Registration Rights Agreement.

“Required
Approvals” shall have the meaning ascribed to such term in Section 3.1(e).

“Required
Minimum” means, as of any date, the maximum aggregate number of shares of Common Stock then issued or potentially issuable
in the future pursuant to the Transaction Documents, including any Underlying Shares issuable upon exercise in full of all Warrants
or conversion in full of all shares of Preferred Stock, ignoring any conversion or exercise limits set forth therein and assuming
that any previously unconverted shares of Preferred Stock are held until the third anniversary of the Closing Date and all dividends
are paid in shares of Common Stock until such third anniversary.

“Rule
144” means Rule 144 promulgated by the Commission pursuant to the Securities Act, as such Rule may be amended or interpreted
from time to time, or any similar rule or regulation hereafter adopted by the Commission having substantially the same purpose
and effect as such Rule.

“Rule
424” means Rule 424 promulgated by the Commission pursuant to the Securities Act, as such Rule may be amended or interpreted
from time to time, or any similar rule or regulation hereafter adopted by the Commission having substantially the same purpose
and effect as such Rule.

“SEC
Reports” shall have the meaning ascribed to such term in Section 3.1(h).

“Securities”
means the Preferred Stock, the Warrants, the Warrant Shares and the Underlying Shares.

“Securities
Act” means the Securities Act of 1933, as amended, and the rules and regulations promulgated thereunder.

“Short
Sales” means all “short sales” as defined in Rule 200 of Regulation SHO under the Exchange Act (but shall
not be deemed to include the location and/or reservation of borrowable shares of Common Stock). 

“Stated
Value” means $1,000 per share of Preferred Stock.

“Subscription
Amount” means, as to each Purchaser, the aggregate amount to be paid for the Preferred Stock and Warrants purchased
hereunder as specified below such Purchaser’s name on the signature page of this Agreement and next to the heading “Subscription
Amount,” in United States dollars and in immediately available funds.

“Subsequent
Financing” shall have the meaning ascribed to such term in Section 4.12(a).

“Subsequent
Financing Notice” shall have the meaning ascribed to such term in Section 4.12(b).

“Subsidiary”
means any subsidiary of the Company as set forth on Schedule 3.1(a) and shall, where applicable, also include any direct
or indirect subsidiary of the Company formed or acquired after the date hereof.

“Trading
Day” means a day on which the principal Trading Market is open for trading.

“Trading
Market” means any of the following markets or exchanges on which the Common Stock is listed or quoted for trading on
the date in question: the NYSE MKT, the Nasdaq Capital Market, the Nasdaq Global Market, the Nasdaq Global Select Market, the
New York Stock Exchange, OTCQB or OTCQX (or any successors to any of the foregoing).

“Transaction
Documents” means this Agreement, the Certificate of Designation, the Warrants, the Registration Rights Agreement, all
exhibits and schedules thereto and hereto and any other documents or agreements executed in connection with the transactions contemplated
hereunder.

“Transfer
Agent” means Broadridge Corporate Issuer Solutions, Inc., the current transfer agent of the Company, with a mailing
address of 44 West Lancaster Avenue, Ardmore, PA 19002 and a facsimile number of (610) 649-7302, and any successor transfer agent
of the Company.

“Underlying
Shares” means the shares of Common Stock issued and issuable upon conversion of the Preferred Stock and upon exercise
of the Warrants and issued and issuable in lieu of the cash payment of dividends on the Preferred Stock in accordance with the
terms of the Certificate of Designation.

“Variable
Rate Transaction” shall have the meaning ascribed to such term in Section 4.13(b).

“VWAP”
means, for any date, the price determined by the first of the following clauses that applies: (a) if the Common Stock is then
listed or quoted on a Trading Market, the daily volume weighted average price of the Common Stock for such date (or the nearest
preceding date) on the Trading Market on which the Common Stock is then listed or quoted as reported by Bloomberg L.P. (based
on a Trading Day from 9:30 a.m. (New York City time) to 4:02 p.m. (New York City time)), (b)  if OTCQB or OTCQX is not a
Trading Market, the volume weighted average price of the Common Stock for such date (or the nearest preceding date) on OTCQB or
OTCQX, if applicable, (c) if the Common Stock is not then listed or quoted for trading on OTCQB or OTCQX and if prices for the
Common Stock are then reported in the “Pink Sheets” published by OTC Markets, Inc. (or a similar organization or agency
succeeding to its functions of reporting prices), the most recent bid price per share of the Common Stock so reported, or (d) in
all other cases, the fair market value of a share of Common Stock as determined by an independent appraiser selected in good faith
by the Purchasers of a majority in interest of the Securities then outstanding and reasonably acceptable to the Company, the fees
and expenses of which shall be paid by the Company.

“Warrants”
means, collectively, the Common Stock purchase warrants delivered to the Purchasers at the Closing in accordance with Section
2.2(a) hereof, which Warrants shall be exercisable immediately and have a term of exercise equal to 5 years, in the form of Exhibit C
attached hereto.

“Warrant
Shares” means the shares of Common Stock issuable upon exercise of the Warrants.

ARTICLE
II. 

PURCHASE
AND SALE

2.1             
Closing. On the Closing Date, upon the terms and subject to the conditions set forth herein, substantially concurrent with
the execution and delivery of this Agreement by the parties hereto, the Company agrees to sell, and the Purchasers, severally
and not jointly, agree to purchase, an aggregate of $500,000 of shares of Preferred Stock with an aggregate Stated Value for each
Purchaser equal to such Purchaser’s Subscription Amount as set forth on the signature page hereto executed by such Purchaser,
and Warrants as determined by pursuant to Section 2.2(a). The aggregate number of shares of Preferred Stock sold hereunder shall
be 500. Each Purchaser shall deliver to the Company such Purchaser’s Subscription Amount, and the Company shall deliver
to each Purchaser its respective shares of Preferred Stock and Warrants, as determined pursuant to Section 2.2(a), and the Company
and each Purchaser shall deliver the other items set forth in Section 2.2 deliverable at the Closing. Upon satisfaction of the
covenants and conditions set forth in Sections 2.2 and 2.3, the Closing shall occur at the offices of EGS or such other location
as the parties shall mutually agree.

2.2             
Deliveries.

(a)               
On or prior to the Closing Date, the Company shall deliver or cause to be delivered to each Purchaser the following:

(i)              
this Agreement duly executed by the Company; 

(ii)              
a legal opinion of Company Counsel, substantially in the form of Exhibit B attached hereto; 

(iii)            
the Registration Rights Agreement duly executed by the Company;

(iv)            
a certificate evidencing a number of shares of Preferred Stock equal to such Purchaser’s Subscription Amount divided by
the Stated Value, registered in the name of such Purchaser and evidence of the filing and acceptance of the Certificate of Designation
from the Secretary of State of Delaware; and

(v)              
a Warrant registered in the name of such Purchaser to purchase up to a number of shares of Common Stock equal to 100% of such
Purchaser’s Subscription Amount divided by $0.015, with an exercise price equal to $0.015, subject to adjustment therein
(such Warrant certificate may be delivered within three Trading Days of the Closing Date).

(b)              
On or prior to the Closing Date, each Purchaser shall deliver or cause to be delivered to the Company the following: 

(i)              
this Agreement duly executed by such Purchaser;

(ii)              
the Registration Rights Agreement duly executed by such Purchaser; and

(iii)            
such Purchaser’s Subscription Amount by wire transfer to the account specified in writing by the Company.

2.3             
Closing Conditions. 

(a)                  
The obligations of the Company hereunder in connection with the Closing are subject to the following conditions being met:

(i)                
the accuracy in all material respects on the Closing Date of the representations and warranties of the Purchasers contained herein
(unless as of a specific date therein in which case they shall be accurate as of such date);

(ii)              
all obligations, covenants and agreements of each Purchaser required to be performed at or prior to the Closing Date shall have
been performed; and

(iii)            
the delivery by each Purchaser of the items set forth in Section 2.2(b) of this Agreement.

(b)                 
The respective obligations of the Purchasers hereunder in connection with the Closing are subject to the following conditions
being met:

(i)                
the accuracy in all material respects when made and on the Closing Date of the representations and warranties of the Company contained
herein (unless as of a specific date therein);

(ii)              
all obligations, covenants and agreements of the Company required to be performed at or prior to the Closing Date shall have been
performed; 

(iii)            
the delivery by the Company of the items set forth in Section 2.2(a) of this Agreement; 

(iv)            
there shall have been no Material Adverse Effect with respect to the Company since the date hereof; and

(v)              
from the date hereof to the Closing Date, trading in the Common Stock shall not have been suspended by the Commission or the Company’s
principal Trading Market, and, at any time prior to the Closing Date, trading in securities generally as reported by Bloomberg
L.P. shall not have been suspended or limited, or minimum prices shall not have been established on securities whose trades are
reported by such service, or on any Trading Market, nor shall a banking moratorium have been declared either by the United States
or New York State authorities nor shall there have occurred any material outbreak or escalation of hostilities or other national
or international calamity of such magnitude in its effect on, or any material adverse change in, any financial market which, in
each case, in the reasonable judgment of such Purchaser, makes it impracticable or inadvisable to purchase the Securities at the
Closing.

ARTICLE
III. 

REPRESENTATIONS
AND WARRANTIES

3.1             
Representations and Warranties of the Company. Except as set forth in the SEC Reports or the Disclosure Schedules, which
Disclosure Schedules shall be deemed a part hereof and shall qualify any representation or otherwise made herein to the extent
of the disclosure contained in the corresponding section of the Disclosure Schedules, the Company hereby makes the following representations
and warranties to each Purchaser:

(a)               
Subsidiaries. All of the direct and indirect subsidiaries of the Company are set forth on Schedule 3.1(a). The Company
owns, directly or indirectly, all of the capital stock or other equity interests of each Subsidiary free and clear of any Liens,
and all of the issued and outstanding shares of capital stock of each Subsidiary are validly issued and are fully paid, non-assessable
and free of preemptive and similar rights to subscribe for or purchase securities. If the Company has no subsidiaries, all other
references to the Subsidiaries or any of them in the Transaction Documents shall be disregarded.

(b)              
Organization and Qualification. The Company and each of the Subsidiaries is an entity duly incorporated or otherwise organized,
validly existing and in good standing under the laws of the jurisdiction of its incorporation or organization, with the requisite
power and authority to own and use its properties and assets and to carry on its business as currently conducted. Neither the
Company nor any Subsidiary is in violation nor default of any of the provisions of its respective certificate or articles of incorporation,
bylaws or other organizational or charter documents. Each of the Company and the Subsidiaries is duly qualified to conduct business
and is in good standing as a foreign corporation or other entity in each jurisdiction in which the nature of the business conducted
or property owned by it makes such qualification necessary, except where the failure to be so qualified or in good standing, as
the case may be, could not have or reasonably be expected to result in: (i) a material adverse effect on the legality, validity
or enforceability of any Transaction Document, (ii) a material adverse effect on the results of operations, assets, business,
prospects or condition (financial or otherwise) of the Company and the Subsidiaries, taken as a whole, or (iii) a material adverse
effect on the Company’s ability to perform in any material respect on a timely basis its obligations under any Transaction
Document (any of (i), (ii) or (iii), a “Material Adverse Effect”) and no Proceeding has been instituted in
any such jurisdiction revoking, limiting or curtailing or seeking to revoke, limit or curtail such power and authority or qualification.

(c)               
Authorization; Enforcement. Subject to Authorized Share Approval, the Company has the requisite corporate power and authority
to enter into and to consummate the transactions contemplated by this Agreement and each of the other Transaction Documents and
otherwise to carry out its obligations hereunder and thereunder. The execution and delivery of this Agreement and each of the
other Transaction Documents by the Company and the consummation by it of the transactions contemplated hereby and thereby have
been duly authorized by all necessary action on the part of the Company and no further action is required by the Company, the
Board of Directors or the Company’s stockholders in connection herewith or therewith other than in connection with the Required
Approvals. This Agreement and each other Transaction Document to which it is a party has been (or upon delivery will have been)
duly executed by the Company and, when delivered in accordance with the terms hereof and thereof, will constitute the valid and
binding obligation of the Company enforceable against the Company in accordance with its terms, except: (i) as limited by general
equitable principles and applicable bankruptcy, insolvency, reorganization, moratorium and other laws of general application affecting
enforcement of creditors’ rights generally, (ii) as limited by laws relating to the availability of specific performance,
injunctive relief or other equitable remedies and (iii) insofar as indemnification and contribution provisions may be limited
by applicable law.

(d)              
No Conflicts. The execution, delivery and performance by the Company of this Agreement and the other Transaction Documents,
the issuance and sale of the Securities and the consummation by it of the transactions contemplated hereby and thereby to which
it is a party do not and will not: (i) conflict with or violate any provision of the Company’s or any Subsidiary’s
certificate or articles of incorporation, bylaws or other organizational or charter documents, subject to Authorized Share Approval,
(ii) conflict with, or constitute a default (or an event that with notice or lapse of time or both would become a default) under,
result in the creation of any Lien upon any of the properties or assets of the Company or any Subsidiary, or give to others any
rights of termination, amendment, acceleration or cancellation (with or without notice, lapse of time or both) of, any agreement,
credit facility, debt or other instrument (evidencing a Company or Subsidiary debt or otherwise) or other understanding to which
the Company or any Subsidiary is a party or by which any property or asset of the Company or any Subsidiary is bound or affected,
or (iii) subject to the Required Approvals, conflict with or result in a violation of any law, rule, regulation, order, judgment,
injunction, decree or other restriction of any court or governmental authority to which the Company or a Subsidiary is subject
(including federal and state securities laws and regulations), or by which any property or asset of the Company or a Subsidiary
is bound or affected; except in the case of each of clauses (ii) and (iii), such as could not have or reasonably be expected to
result in a Material Adverse Effect.

(e)               
Filings, Consents and Approvals. The Company is not required to obtain any consent, waiver, authorization or order of,
give any notice to, or make any filing or registration with, any court or other federal, state, local or other governmental authority
or other Person in connection with the execution, delivery and performance by the Company of the Transaction Documents, other
than: (i) the filings required pursuant to Section 4.6 of this Agreement, (ii) the filing with the Commission pursuant to the
Registration Rights Agreement, (iii) the notice and/or application(s) to each applicable Trading Market for the issuance and sale
of the Securities and the listing of the Underlying Shares for trading thereon in the time and manner required thereby, (iv) the
filing of Form D with the Commission and such filings as are required to be made under applicable state securities laws and (v)
Authorized Share Approval (collectively, the “Required Approvals”).

(f)               
Issuance of the Securities. The Securities are duly authorized and, when issued and paid for in accordance with the applicable
Transaction Documents, will be duly and validly issued, fully paid and nonassessable, free and clear of all Liens imposed by the
Company. The Underlying Shares have been duly authorized and, when issued in accordance with the terms of the Transaction Documents,
will be validly issued, fully paid and nonassessable, free and clear of all Liens imposed by the Company. Subject to Authorized
Share Approval, the Company has reserved from its duly authorized capital stock a number of shares of Common Stock for issuance
of the Underlying Shares at least equal to the Required Minimum. 

(g)              
Capitalization. The capitalization of the Company is as set forth in the SEC Reports. The Company has not issued any capital
stock since its most recently filed periodic report under the Exchange Act, other than pursuant to the exercise of employee stock
options under the Company’s stock option plans, the issuance of shares of Common Stock to employees pursuant to the Company’s
employee stock purchase plans and pursuant to the conversion and/or exercise of Common Stock Equivalents outstanding as of the
date of the most recently filed periodic report under the Exchange Act. No Person has any right of first refusal, preemptive right,
right of participation, or any similar right to participate in the transactions contemplated by the Transaction Documents. Except
as a result of the purchase and sale of the Securities, there are no outstanding options, warrants, scrip rights to subscribe
to, calls or commitments of any character whatsoever relating to, or securities, rights or obligations convertible into or exercisable
or exchangeable for, or giving any Person any right to subscribe for or acquire any shares of Common Stock or the capital stock
of any Subsidiary, or contracts, commitments, understandings or arrangements by which the Company or any Subsidiary is or may
become bound to issue additional shares of Common Stock or Common Stock Equivalents or capital stock of any Subsidiary. The issuance
and sale of the Securities will not obligate the Company or any Subsidiary to issue shares of Common Stock or other securities
to any Person (other than the Purchasers) and will not result in a right of any holder of Company securities to adjust the exercise,
conversion, exchange or reset price under any of such securities. There are no outstanding securities or instruments of the Company
or any Subsidiary that contain any redemption or similar provisions, and there are no contracts, commitments, understandings or
arrangements by which the Company or any Subsidiary is or may become bound to redeem a security of the Company or such Subsidiary.
The Company does not have any stock appreciation rights or “phantom stock” plans or agreements or any similar plan
or agreement. All of the outstanding shares of capital stock of the Company are duly authorized, validly issued, fully paid and
nonassessable, have been issued in material compliance with all federal and state securities laws, and none of such outstanding
shares was issued in violation of any preemptive rights or similar rights to subscribe for or purchase securities. No further
approval or authorization of any stockholder, the Board of Directors or others is required for the issuance and sale of the Securities.
There are no stockholders agreements, voting agreements or other similar agreements with respect to the Company’s capital
stock to which the Company is a party or, to the knowledge of the Company, between or among any of the Company’s stockholders.

(h)              
SEC Reports; Financial Statements. The Company has filed all reports, schedules, forms, statements and other documents
required to be filed by the Company under the Securities Act and the Exchange Act, including pursuant to Section 13(a) or 15(d)
thereof, for the two years preceding the date hereof (or such shorter period as the Company was required by law or regulation
to file such material) (the foregoing materials, including the exhibits thereto and documents incorporated by reference therein,
being collectively referred to herein as the “SEC Reports”) on a timely basis or has received a valid extension
of such time of filing and has filed any such SEC Reports prior to the expiration of any such extension. As of their respective
dates, the SEC Reports complied in all material respects with the requirements of the Securities Act and the Exchange Act, as
applicable, and none of the SEC Reports, when filed, contained any untrue statement of a material fact or omitted to state a material
fact required to be stated therein or necessary in order to make the statements therein, in the light of the circumstances under
which they were made, not misleading. The financial statements of the Company included in the SEC Reports comply in all material
respects with applicable accounting requirements and the rules and regulations of the Commission with respect thereto as in effect
at the time of filing. Such financial statements have been prepared in accordance with United States generally accepted accounting
principles applied on a consistent basis during the periods involved (“GAAP”), except as may be otherwise specified
in such financial statements or the notes thereto and except that unaudited financial statements may not contain all footnotes
required by GAAP, and fairly present in all material respects the financial position of the Company and its consolidated Subsidiaries
as of and for the dates thereof and the results of operations and cash flows for the periods then ended, subject, in the case
of unaudited statements, to normal, immaterial, year-end audit adjustments.

(i)                
Material Changes; Undisclosed Events, Liabilities or Developments. Since the date of the latest audited financial statements
included within the SEC Reports, except as specifically disclosed in a subsequent SEC Report filed prior to the date hereof: (i)
there has been no event, occurrence or development that has had or that could reasonably be expected to result in a Material Adverse
Effect, (ii) the Company has not incurred any material liabilities (contingent or otherwise) other than (A) trade payables and
accrued expenses incurred in the ordinary course of business consistent with past practice and (B) liabilities not required to
be reflected in the Company’s financial statements pursuant to GAAP or disclosed in filings made with the Commission, (iii)
the Company has not altered its method of accounting, (iv) the Company has not declared or made any dividend or distribution of
cash or other property to its stockholders or purchased, redeemed or made any agreements to purchase or redeem any shares of its
capital stock and (v) the Company has not issued any equity securities to any officer, director or Affiliate, except pursuant
to existing Company stock option plans. The Company does not have pending before the Commission any request for confidential treatment
of information. Except for the issuance of the Securities contemplated by this Agreement or as set forth on Schedule 3.1(i),
no event, liability, fact, circumstance, occurrence or development has occurred or exists or is reasonably expected to occur or
exist with respect to the Company or its Subsidiaries or their respective businesses, properties, operations, assets or financial
condition, that would be required to be disclosed by the Company under applicable securities laws at the time this representation
is made or deemed made that has not been publicly disclosed at least 1 Trading Day prior to the date that this representation
is made.

(j)                
Litigation. Except as described in the SEC Reports, there is no action, suit, inquiry, notice of violation, proceeding
or investigation pending or, to the knowledge of the Company, threatened against or affecting the Company, any Subsidiary or any
of their respective properties before or by any court, arbitrator, governmental or administrative agency or regulatory authority
(federal, state, county, local or foreign) (collectively, an “Action”) which (i) adversely affects or challenges
the legality, validity or enforceability of any of the Transaction Documents or the Securities or (ii) could, if there were an
unfavorable decision, have or reasonably be expected to result in a Material Adverse Effect. Except as set forth in the SEC Reports,
since August 1, 2010, neither the Company nor any Subsidiary, nor any director or officer thereof, is or has been the subject
of any Action involving a claim of violation of or liability under federal or state securities laws or a claim of breach of fiduciary
duty. There has not been, and to the knowledge of the Company, there is not pending or contemplated, any investigation by the
Commission involving the Company or any current or former director or officer of the Company. The Commission has not issued any
stop order or other order suspending the effectiveness of any registration statement filed by the Company or any Subsidiary under
the Exchange Act or the Securities Act. 

(k)              
Labor Relations. No labor dispute exists or, to the knowledge of the Company, is imminent with respect to any of the employees
of the Company, which could reasonably be expected to result in a Material Adverse Effect. None of the Company’s or its
Subsidiaries’ employees is a member of a union that relates to such employee’s relationship with the Company or such
Subsidiary, and neither the Company nor any of its Subsidiaries is a party to a collective bargaining agreement, and the Company
and its Subsidiaries believe that their relationships with their employees are good. To the knowledge of the Company, no executive
officer of the Company or any Subsidiary, is, or is now expected to be, in violation of any material term of any employment contract,
confidentiality, disclosure or proprietary information agreement or non-competition agreement, or any other contract or agreement
or any restrictive covenant in favor of any third party, and the continued employment of each such executive officer does not
subject the Company or any of its Subsidiaries to any liability with respect to any of the foregoing matters. The Company and
its Subsidiaries are in compliance with all U.S. federal, state, local and foreign laws and regulations relating to employment
and employment practices, terms and conditions of employment and wages and hours, except where the failure to be in compliance
could not, individually or in the aggregate, reasonably be expected to have a Material Adverse Effect.

(l)                
Compliance. Neither the Company nor any Subsidiary: (i) is in default under or in violation of (and no event has occurred
that has not been waived that, with notice or lapse of time or both, would result in a default by the Company or any Subsidiary
under), nor has the Company or any Subsidiary received notice of a claim that it is in default under or that it is in violation
of, any indenture, loan or credit agreement or any other agreement or instrument to which it is a party or by which it or any
of its properties is bound (whether or not such default or violation has been waived), (ii) is in violation of any judgment, decree
or order of any court, arbitrator or other governmental authority or (iii) is or has been in violation of any statute, rule, ordinance
or regulation of any governmental authority, including without limitation all foreign, federal, state and local laws relating
to taxes, environmental protection, occupational health and safety, product quality and safety and employment and labor matters,
except in each case as could not have or reasonably be expected to result in a Material Adverse Effect.

(m)            
Regulatory Permits. The Company and the Subsidiaries possess all certificates, authorizations and permits issued by the
appropriate federal, state, local or foreign regulatory authorities necessary to conduct their respective businesses as described
in the SEC Reports, except where the failure to possess such permits could not reasonably be expected to result in a Material
Adverse Effect (“Material Permits”), and neither the Company nor any Subsidiary has received any notice of
proceedings relating to the revocation or modification of any Material Permit.

(n)              
Title to Assets. Except as set forth on Schedule 3.1(n), the Company and the Subsidiaries have good and marketable
title in fee simple to all real property owned by them and good and marketable title in all personal property owned by them that
is material to the business of the Company and the Subsidiaries, in each case free and clear of all Liens, except for (i) Liens
as do not materially affect the value of such property and do not materially interfere with the use made and proposed to be made
of such property by the Company and the Subsidiaries and (ii) Liens for the payment of federal, state or other taxes, for which
appropriate reserves have been made in accordance with GAAP and, the payment of which is neither delinquent nor subject to penalties.
Any real property and facilities held under lease by the Company and the Subsidiaries are held by them under valid, subsisting
and enforceable leases with which the Company and the Subsidiaries are in compliance.

(o)              
Intellectual Property. The Company and the Subsidiaries have, or have rights to use, all patents, patent applications,
trademarks, trademark applications, service marks, trade names, trade secrets, inventions, copyrights, licenses and other intellectual
property rights and similar rights as described in the SEC Reports as necessary or required for use in connection with their respective
businesses and which the failure to so have could have a Material Adverse Effect (collectively, the “Intellectual Property
Rights”). None of, and neither the Company nor any Subsidiary has received a notice (written or otherwise) that any
of, the Intellectual Property Rights has expired, terminated or been abandoned, or is expected to expire or terminate or be abandoned,
within two (2) years from the date of this Agreement. Neither the Company nor any Subsidiary has received, since the date of the
latest audited financial statements included within the SEC Reports, a written notice of a claim or otherwise has any knowledge
that the Intellectual Property Rights violate or infringe upon the rights of any Person, except as could not have or reasonably
be expected to not have a Material Adverse Effect. To the knowledge of the Company, all such Intellectual Property Rights are
enforceable and there is no existing infringement by another Person of any of the Intellectual Property Rights. The Company and
its Subsidiaries have taken reasonable security measures to protect the secrecy, confidentiality and value of all of their intellectual
properties, except where failure to do so could not, individually or in the aggregate, reasonably be expected to have a Material
Adverse Effect.

(p)              
Insurance. The Company and the Subsidiaries are insured by insurers of recognized financial responsibility against such
losses and risks and in such amounts as are prudent and customary in the businesses in which the Company and the Subsidiaries
are engaged, including, but not limited to, directors and officers insurance coverage at least equal to the aggregate Subscription
Amount. Neither the Company nor any Subsidiary has any reason to believe that it will not be able to renew its existing insurance
coverage as and when such coverage expires or to obtain similar coverage from similar insurers as may be necessary to continue
its business without a significant increase in cost.

(q)              
Transactions With Affiliates and Employees. Except as set forth in the SEC Reports, none of the officers or directors of
the Company or any Subsidiary and, to the knowledge of the Company, none of the employees of the Company or any Subsidiary is
presently a party to any transaction with the Company or any Subsidiary (other than for services as employees, officers and directors),
including any contract, agreement or other arrangement providing for the furnishing of services to or by, providing for rental
of real or personal property to or from, providing for the borrowing of money from or lending of money to or otherwise requiring
payments to or from any officer, director or such employee or, to the knowledge of the Company, any entity in which any officer,
director, or any such employee has a substantial interest or is an officer, director, trustee, stockholder, member or partner,
in each case in excess of $120,000 other than for: (i) payment of salary or consulting fees for services rendered, (ii) reimbursement
for expenses incurred on behalf of the Company and (iii) other employee benefits, including stock option agreements under any
stock option plan of the Company.

(r)                
Sarbanes-Oxley; Internal Accounting Controls. The Company and the Subsidiaries are in compliance with any and all applicable
requirements of the Sarbanes-Oxley Act of 2002 that are effective as of the date hereof, and any and all applicable rules and
regulations promulgated by the Commission thereunder that are effective as of the date hereof and as of the Closing Date. The
Company and the Subsidiaries maintain a system of internal accounting controls sufficient to provide reasonable assurance that:
(i) transactions are executed in accordance with management’s general or specific authorizations, (ii) transactions are
recorded as necessary to permit preparation of financial statements in conformity with GAAP and to maintain asset accountability,
(iii) access to assets is permitted only in accordance with management’s general or specific authorization, and (iv) the
recorded accountability for assets is compared with the existing assets at reasonable intervals and appropriate action is taken
with respect to any differences. The Company and the Subsidiaries have established disclosure controls and procedures (as defined
in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the Company and the Subsidiaries and designed such disclosure controls and
procedures to ensure that information required to be disclosed by the Company in the reports it files or submits under the Exchange
Act is recorded, processed, summarized and reported, within the time periods specified in the Commission’s rules and forms.
The Company’s certifying officers have evaluated the effectiveness of the disclosure controls and procedures of the Company
and the Subsidiaries as of the end of the period covered by the most recently filed periodic report under the Exchange Act (such
date, the “Evaluation Date”). The Company presented in its most recently filed periodic report under the Exchange
Act the conclusions of the certifying officers about the effectiveness of the disclosure controls and procedures based on their
evaluations as of the Evaluation Date. Since the Evaluation Date, there have been no changes in the internal control over financial
reporting (as such term is defined in the Exchange Act) of the Company and its Subsidiaries that have materially affected, or
is reasonably likely to materially affect, the internal control over financial reporting of the Company and its Subsidiaries.

(s)               
Certain Fees. No brokerage or finder’s fees or commissions are or will be payable by the Company or any Subsidiary
to any broker, financial advisor or consultant, finder, placement agent, investment banker, bank or other Person with respect
to the transactions contemplated by the Transaction Documents. The Purchasers shall have no obligation with respect to any fees
or with respect to any claims made by or on behalf of other Persons for fees of a type contemplated in this Section that may be
due in connection with the transactions contemplated by the Transaction Documents. 

(t)                
Investment Company. The Company is not, and is not an Affiliate of, and immediately after receipt of payment for the Securities,
will not be or be an Affiliate of, an “investment company” within the meaning of the Investment Company Act of 1940,
as amended. The Company shall conduct its business in a manner so that it will not become an “investment company”
subject to registration under the Investment Company Act of 1940, as amended.

(u)              
Registration Rights. No Person has any right to cause the Company or any Subsidiary to effect the registration under the
Securities Act of any securities of the Company or any Subsidiary.

(v)              
Listing and Maintenance Requirements. The Common Stock is registered pursuant to Section 12(b) or 12(g) of the Exchange
Act, and the Company has taken no action designed to, or which to its knowledge is likely to have the effect of, terminating the
registration of the Common Stock under the Exchange Act nor has the Company received any notification that the Commission is contemplating
terminating such registration. The Company has not, in the 12 months preceding the date hereof, received notice from any Trading
Market on which the Common Stock is or has been listed or quoted to the effect that the Company is not in compliance with the
listing or maintenance requirements of such Trading Market. The Company is, and has no reason to believe that it will not in the
foreseeable future continue to be, in compliance with all such listing and maintenance requirements. The Common Stock is currently
eligible for electronic transfer through the Depository Trust Company or another established clearing corporation and the Company
is current in payment of the fees of the Depository Trust Company (or such other established clearing corporation) in connection
with such electronic transfer.

(w)            
Application of Takeover Protections. The Company and the Board of Directors have taken all necessary action, if any, in
order to render inapplicable any control share acquisition, business combination, poison pill (including any distribution under
a rights agreement) or other similar anti-takeover provision under the Company’s certificate of incorporation (or similar
charter documents) or the laws of its state of incorporation that is or could become applicable to the Purchasers as a result
of the Purchasers and the Company fulfilling their obligations or exercising their rights under the Transaction Documents, including
without limitation as a result of the Company’s issuance of the Securities and the Purchasers’ ownership of the Securities.

(x)              
Disclosure. Except with respect to the material terms and conditions of the transactions contemplated by the Transaction
Documents, the Company confirms that neither it nor any other Person acting on its behalf has provided any of the Purchasers or
their agents or counsel with any information that it believes constitutes or might constitute material, non-public information.
The Company understands and confirms that the Purchasers will rely on the foregoing representation in effecting transactions in
securities of the Company. All of the disclosure furnished by or on behalf of the Company to the Purchasers regarding the Company
and its Subsidiaries, their respective businesses and the transactions contemplated hereby, including the Disclosure Schedules
to this Agreement, when taken together as a whole, is true and correct and does not contain any untrue statement of a material
fact or omit to state any material fact necessary in order to make the statements made therein, in light of the circumstances
under which they were made, not misleading. The press releases disseminated by the Company during the twelve months preceding
the date of this Agreement taken as a whole do not contain any untrue statement of a material fact or omit to state a material
fact required to be stated therein or necessary in order to make the statements therein, in light of the circumstances under which
they were made and when made, not misleading. The Company acknowledges and agrees that no Purchaser makes or has made any representations
or warranties with respect to the transactions contemplated hereby other than those specifically set forth in Section 3.2 hereof.

(y)              
No Integrated Offering. Assuming the accuracy of the Purchasers’ representations and warranties set forth in Section
3.2, neither the Company, nor any of its Affiliates, nor any Person acting on its or their behalf has, directly or indirectly,
made any offers or sales of any security or solicited any offers to buy any security, under circumstances that would cause this
offering of the Securities to be integrated with prior offerings by the Company for purposes of: (i) the Securities Act which
would require the registration of any such securities under the Securities Act, or (ii) any applicable shareholder approval provisions
of any Trading Market on which any of the securities of the Company are listed or designated. 

(z)               
Solvency. Based on the consolidated financial condition of the Company as of the Closing Date, and the Company’s
good faith estimate of the fair market value of its assets, after giving effect to the receipt by the Company of the proceeds
from the sale of the Securities hereunder: (i) the fair saleable value of the Company’s assets exceeds the amount that will
be required to be paid on or in respect of the Company’s existing debts and other liabilities (including known contingent
liabilities) as they mature, (ii) the Company’s assets do not constitute unreasonably small capital to carry on its business
as now conducted and as proposed to be conducted including its capital needs taking into account the particular capital requirements
of the business conducted by the Company, consolidated and projected capital requirements and capital availability thereof, and
(iii) the current cash flow of the Company, together with the proceeds the Company would receive, were it to liquidate all of
its assets, after taking into account all anticipated uses of the cash, would be sufficient to pay all amounts on or in respect
of its liabilities when such amounts are required to be paid. The Company does not intend to incur debts beyond its ability to
pay such debts as they mature (taking into account the timing and amounts of cash to be payable on or in respect of its debt).
The Company has no knowledge of any facts or circumstances which lead it to believe that it will file for reorganization or liquidation
under the bankruptcy or reorganization laws of any jurisdiction within one year from the Closing Date. Schedule 3.1(z)
sets forth as of the date hereof all outstanding secured and unsecured Indebtedness of the Company or any Subsidiary, or for which
the Company or any Subsidiary has commitments. For the purposes of this Agreement, “Indebtedness” means (x)
any liabilities for borrowed money or amounts owed in excess of $250,000 (other than trade accounts payable incurred in the ordinary
course of business), (y) all guaranties, endorsements and other contingent obligations in respect of indebtedness of others, whether
or not the same are or should be reflected in the Company’s consolidated balance sheet (or the notes thereto), except guaranties
by endorsement of negotiable instruments for deposit or collection or similar transactions in the ordinary course of business;
and (z) the present value of any lease payments in excess of $250,000 due under leases required to be capitalized in accordance
with GAAP. Neither the Company nor any Subsidiary is in default with respect to any Indebtedness.

(aa)           
Tax Status.  Except for matters that would not, individually or in the aggregate, have or reasonably be expected to
result in a Material Adverse Effect, the Company and its Subsidiaries each (i) has made or filed all United States federal, state
and local income and all foreign income and franchise tax returns, reports and declarations required by any jurisdiction to which
it is subject, (ii) has paid all taxes and other governmental assessments and charges that are material in amount, shown or determined
to be due on such returns, reports and declarations and (iii) has set aside on its books provision reasonably adequate for the
payment of all material taxes for periods subsequent to the periods to which such returns, reports or declarations apply. There
are no unpaid taxes in any material amount claimed to be due by the taxing authority of any jurisdiction, and the officers of
the Company or of any Subsidiary know of no basis for any such claim.

(bb)          
Foreign Corrupt Practices. Neither the Company nor any Subsidiary, nor to the knowledge of the Company or any Subsidiary,
any agent or other person acting on behalf of the Company or any Subsidiary, has: (i) directly or indirectly, used any funds for
unlawful contributions, gifts, entertainment or other unlawful expenses related to foreign or domestic political activity, (ii)
made any unlawful payment to foreign or domestic government officials or employees or to any foreign or domestic political parties
or campaigns from corporate funds, (iii) failed to disclose fully any contribution made by the Company or any Subsidiary (or made
by any person acting on its behalf of which the Company is aware) which is in violation of law or (iv) violated in any material
respect any provision of FCPA.

(cc)           
Accountants. The Company’s accounting firm is set forth on Schedule 3.1(cc) of the Disclosure Schedules. To
the knowledge and belief of the Company, such accounting firm: (i) is a registered public accounting firm as required by the Exchange
Act and (ii) shall express its opinion with respect to the financial statements to be included in the Company’s Annual Report
for the fiscal year ending July 31, 2015.

(dd)         
Acknowledgment Regarding Purchasers’ Purchase of Securities. The Company acknowledges and agrees that each of the
Purchasers is acting solely in the capacity of an arm’s length purchaser with respect to the Transaction Documents and the
transactions contemplated thereby. The Company further acknowledges that no Purchaser is acting as a financial advisor or fiduciary
of the Company (or in any similar capacity) with respect to the Transaction Documents and the transactions contemplated thereby
and any advice given by any Purchaser or any of their respective representatives or agents in connection with the Transaction
Documents and the transactions contemplated thereby is merely incidental to the Purchasers’ purchase of the Securities.
The Company further represents to each Purchaser that the Company’s decision to enter into this Agreement and the other
Transaction Documents has been based solely on the independent evaluation of the transactions contemplated hereby by the Company
and its representatives.

(ee)           
Acknowledgment Regarding Purchaser’s Trading
Activity. Anything in this Agreement or elsewhere herein to the contrary notwithstanding (except for Sections 3.2(e) and 4.16
hereof), it is understood and acknowledged by the Company that: (i) none of the Purchasers has been asked by the Company to agree,
nor has any Purchaser agreed, to desist from purchasing or selling, long and/or short, securities of the Company, or “derivative”
securities based on securities issued by the Company or to hold the Securities for any specified term, (ii) past or future open
market or other transactions by any Purchaser, specifically including, without limitation, Short Sales or “derivative”
transactions, before or after the closing of this or future private placement transactions, may negatively impact the market price
of the Company’s publicly-traded securities, (iii) any Purchaser, and counter-parties in “derivative” transactions
to which any such Purchaser is a party, directly or indirectly, may presently have a “short” position in the Common
Stock and (iv) each Purchaser shall not be deemed to have any affiliation with or control over any arm’s length counter-party
in any “derivative” transaction. The Company
further understands and acknowledges that (y) one or more Purchasers may engage in hedging activities at various times during
the period that the Securities are outstanding, including, without limitation, during the periods that the value of the Underlying
Shares deliverable with respect to Securities are being determined, and (z) such hedging activities (if any) could reduce the
value of the existing stockholders' equity interests in the Company at and after the time that the hedging activities are being
conducted.  The Company acknowledges that such aforementioned hedging activities do not constitute a breach of any of the
Transaction Documents, provided that such activities do not breach the Investors’ representations made in Section 3.2 of
this Agreement.

(ff)            
Regulation M Compliance.  The Company has not, and to its knowledge no one acting on its behalf has, (i) taken, directly
or indirectly, any action designed to cause or to result in the stabilization or manipulation of the price of any security of
the Company to facilitate the sale or resale of any of the Securities, (ii) sold, bid for, purchased, or paid any compensation
for soliciting purchases of, any of the Securities, or (iii) paid or agreed to pay to any Person any compensation for soliciting
another to purchase any other securities of the Company, other than, in the case of clauses (ii) and (iii), compensation paid
to the Company’s placement agent in connection with the placement of the Securities.

(gg)          
FDA. As to each product subject to the jurisdiction of the U.S. Food and Drug Administration (“FDA”)
under the Federal Food, Drug and Cosmetic Act, as amended, and the regulations thereunder (“FDCA”) that is
manufactured, packaged, labeled, tested, distributed, sold, and/or marketed by the Company or any of its Subsidiaries (each such
product, a “Pharmaceutical Product”), such Pharmaceutical Product is being manufactured, packaged, labeled,
tested, distributed, sold and/or marketed by the Company in compliance with all applicable requirements under FDCA and similar
laws, rules and regulations relating to registration, investigational use, premarket clearance, licensure, or application approval,
good manufacturing practices, good laboratory practices, good clinical practices, product listing, quotas, labeling, advertising,
record keeping and filing of reports, except where the failure to be in compliance would not have a Material Adverse Effect. There
is no pending, completed or, to the Company's knowledge, threatened, action (including any lawsuit, arbitration, or legal or administrative
or regulatory proceeding, charge, complaint, or investigation) against the Company or any of its Subsidiaries, and none of the
Company or any of its Subsidiaries has received any notice, warning letter or other communication from the FDA or any other governmental
entity, which (i) contests the premarket clearance, licensure, registration, or approval of, the uses of, the distribution of,
the manufacturing or packaging of, the testing of, the sale of, or the labeling and promotion of any Pharmaceutical Product, (ii)
withdraws its approval of, requests the recall, suspension, or seizure of, or withdraws or orders the withdrawal of advertising
or sales promotional materials relating to, any Pharmaceutical Product, (iii) imposes a clinical hold on any clinical investigation
by the Company or any of its Subsidiaries, (iv) enjoins production at any facility of the Company or any of its Subsidiaries,
(v) enters or proposes to enter into a consent decree of permanent injunction with the Company or any of its Subsidiaries, or
(vi) otherwise alleges any violation of any laws, rules or regulations by the Company or any of its Subsidiaries, and which, either
individually or in the aggregate, would have a Material Adverse Effect. The properties,
business and operations of the Company have been and are being conducted in all material respects in accordance with all applicable
laws, rules and regulations of the FDA.  The Company has not been informed by the FDA that the FDA will prohibit the marketing,
sale, license or use in the United States of any product proposed to be developed, produced or marketed by the Company nor has
the FDA expressed any concern as to approving or clearing for marketing any product being developed or proposed to be developed
by the Company.

(hh)          
Stock Option Plans. Each stock option granted by the Company under the Company’s stock option plan was granted (i)
in accordance with the terms of the Company’s stock option plan and (ii) with an exercise price at least equal to the fair
market value of the Common Stock on the date such stock option would be considered granted under GAAP and applicable law. No stock
option granted under the Company’s stock option plan has been backdated. The Company has not knowingly granted, and there
is no and has been no Company policy or practice to knowingly grant, stock options prior to, or otherwise knowingly coordinate
the grant of stock options with, the release or other public announcement of material information regarding the Company or its
Subsidiaries or their financial results or prospects. 

(ii)              
Office of Foreign Assets Control. Neither the Company nor any Subsidiary nor, to the Company's knowledge, any director,
officer, agent, employee or affiliate of the Company is currently subject to any U.S. sanctions administered by the Office of
Foreign Assets Control of the U.S. Treasury Department (“OFAC”).

(jj)              
Money Laundering. The operations of the Company and its Subsidiaries are and have been conducted at all times in compliance
with applicable financial record-keeping and reporting requirements of the Currency and Foreign Transactions Reporting Act of
1970, as amended, applicable money laundering statutes and applicable rules and regulations thereunder (collectively, the “Money
Laundering Laws”), and no action, suit or proceeding by or before any court or governmental agency, authority or body
or any arbitrator involving the Company or any Subsidiary with respect to the Money Laundering Laws is pending or, to the knowledge
of the Company or any Subsidiary, threatened.

(kk)          
Private Placement. Assuming the accuracy of the Purchasers’ representations and warranties set forth in Section 3.2,
no registration under the Securities Act is required for the offer and sale of the Securities by the Company to the Purchasers
as contemplated hereby. The issuance and sale of the Securities hereunder does not contravene the rules and regulations of the
Trading Market.

(ll)              
No General Solicitation. Neither the Company nor any person acting on behalf of the Company has offered or sold any of
the Securities by any form of general solicitation or general advertising. The Company has offered the Securities for sale only
to the Purchasers and certain other “accredited investors” within the meaning of Rule 501 under the Securities Act.

3.2             
Representations and Warranties of the Purchasers. Each Purchaser, for itself and for no other Purchaser, hereby represents
and warrants as of the date hereof and as of the Closing Date to the Company as follows (unless as of a specific date therein):

(a)               
Organization; Authority. Such Purchaser is either an individual or an entity duly incorporated or formed, validly existing
and in good standing under the laws of the jurisdiction of its incorporation or formation with full right, corporate, partnership,
limited liability company or similar power and authority to enter into and to consummate the transactions contemplated by the
Transaction Documents and otherwise to carry out its obligations hereunder and thereunder. The execution and delivery of the Transaction
Documents and performance by such Purchaser of the transactions contemplated by the Transaction Documents have been duly authorized
by all necessary corporate, partnership, limited liability company or similar action, as applicable, on the part of such Purchaser.
Each Transaction Document to which it is a party has been duly executed by such Purchaser, and when delivered by such Purchaser
in accordance with the terms hereof, will constitute the valid and legally binding obligation of such Purchaser, enforceable against
it in accordance with its terms, except: (i) as limited by general equitable principles and applicable bankruptcy, insolvency,
reorganization, moratorium and other laws of general application affecting enforcement of creditors’ rights generally, (ii)
as limited by laws relating to the availability of specific performance, injunctive relief or other equitable remedies and (iii)
insofar as indemnification and contribution provisions may be limited by applicable law.

(b)              
Own Account. Such Purchaser understands that the Securities are “restricted securities” and have not been registered
under the Securities Act or any applicable state securities law and is acquiring the Securities as principal for its own account
and not with a view to or for distributing or reselling such Securities 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 Securities 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 Securities 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 Securities pursuant to a Registration
Statement or otherwise in compliance with applicable federal and state securities laws). Such Purchaser is acquiring the Securities
hereunder in the ordinary course of its business.

(c)               
Purchaser Status. At the time such Purchaser was offered the Securities, it was, and as of the date hereof it is, and on
each date on which it exercises any Warrants or converts any shares of Preferred Stock it will be either: (i) an “accredited
investor” as defined in Rule 501(a)(1), (a)(2), (a)(3), (a)(7) or (a)(8) under the Securities Act or (ii) a “qualified
institutional buyer” as defined in Rule 144A(a) under the Securities Act. Such Purchaser is not required to be registered
as a broker-dealer under Section 15 of the Exchange Act.

(d)              
Experience of Such Purchaser. Such Purchaser, either alone or together with its representatives, has such knowledge, sophistication
and experience in business and financial matters so as to be capable of evaluating the merits and risks of the prospective investment
in the Securities, and has so evaluated the merits and risks of such investment. Such Purchaser is able to bear the economic risk
of an investment in the Securities and, at the present time, is able to afford a complete loss of such investment.

(e)               
Certain Transactions and Confidentiality. Other than consummating the transactions contemplated hereunder, such Purchaser
has not directly or indirectly, nor has any Person acting on behalf of or pursuant to any understanding with such Purchaser, executed
any purchases or sales, including Short Sales, of the securities of the Company during the period commencing as of the time
that such Purchaser first received a term sheet (written or oral) from the Company or any other Person representing the Company
setting forth the material terms of the transactions contemplated hereunder and ending immediately prior to the execution hereof.
Notwithstanding the foregoing, in the case of a Purchaser that is a multi-managed investment vehicle whereby separate portfolio
managers manage separate portions of such Purchaser’s assets and the portfolio managers have no direct knowledge of the
investment decisions made by the portfolio managers managing other portions of such Purchaser’s assets, the representation
set forth above shall only apply with respect to the portion of assets managed by the portfolio manager that made the investment
decision to purchase the Securities covered by this Agreement. Other than to other Persons party to this Agreement or to such
Purchaser’s representatives, including, without limitation, its officers, partners, legal and other advisors, employees,
agents and Affiliates, such Purchaser has maintained the confidentiality of all disclosures made to it in connection with this
transaction (including the existence and terms of this transaction). Notwithstanding the foregoing, for avoidance of doubt, nothing
contained herein shall constitute a representation or warranty, or preclude any actions, with respect to the identification of
the availability of, or securing of, available shares to borrow in order to effect Short Sales or similar transactions in the
future.

The
Company acknowledges and agrees that the representations contained in Section 3.2 shall not modify, amend or affect such Purchaser’s
right to rely on the Company’s representations and warranties contained in this Agreement or any representations and warranties
contained in any other Transaction Document or any other document or instrument executed and/or delivered in connection with this
Agreement or the consummation of the transaction contemplated hereby.

 

ARTICLE
IV. 

OTHER
AGREEMENTS OF THE PARTIES

4.1 
Transfer Restrictions.

(a)               
The Securities may only be disposed of in compliance with state and federal securities laws. In connection with any transfer of
Securities other than pursuant to an effective registration statement or Rule 144, to the Company or to an Affiliate of a Purchaser
or in connection with a pledge as contemplated in Section 4.1(b), the Company may require the transferor thereof to provide to
the Company an opinion of counsel selected by the transferor and reasonably acceptable to the Company, the form and substance
of which opinion shall be reasonably satisfactory to the Company, to the effect that such transfer does not require registration
of such transferred Securities under the Securities Act. As a condition of transfer, any such transferee shall agree in writing
to be bound by the terms of this Agreement and the Registration Rights Agreement and shall have the rights and obligations of
a Purchaser under this Agreement and the Registration Rights Agreement.

(b)              
The Purchasers agree to the imprinting, so long as is required by this Section 4.1, of a legend on any of the Securities in the
following form:

[NEITHER]
THIS SECURITY [NOR THE SECURITIES INTO WHICH THIS SECURITY IS [EXERCISABLE] [CONVERTIBLE]] HAS [NOT] BEEN REGISTERED WITH THE
SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER
THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT
PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN AVAILABLE EXEMPTION FROM, OR IN A TRANSACTION
NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS AS
EVIDENCED BY A LEGAL OPINION OF COUNSEL TO THE TRANSFEROR TO SUCH EFFECT, THE SUBSTANCE OF WHICH SHALL BE REASONABLY ACCEPTABLE
TO THE COMPANY. THIS SECURITY [AND THE SECURITIES ISSUABLE UPON [EXERCISE] [CONVERSION] OF THIS SECURITY] MAY BE PLEDGED IN CONNECTION
WITH A BONA FIDE MARGIN ACCOUNT WITH A REGISTERED BROKER-DEALER OR OTHER LOAN WITH A FINANCIAL INSTITUTION THAT IS AN “ACCREDITED
INVESTOR” AS DEFINED IN RULE 501(a) UNDER THE SECURITIES ACT OR OTHER LOAN SECURED BY SUCH SECURITIES.

The
Company acknowledges and agrees that a Purchaser may from time to time pledge pursuant to a bona fide margin agreement with a
registered broker-dealer or grant a security interest in some or all of the Securities to a financial institution that is an “accredited
investor” as defined in Rule 501(a) under the Securities Act and who agrees to be bound by the provisions of this Agreement
and the Registration Rights Agreement and, if required under the terms of such arrangement, such Purchaser may transfer pledged
or secured Securities to the pledgees or secured parties. Such a pledge or transfer would not be subject to approval of the Company
and no legal opinion of legal counsel of the pledgee, secured party or pledgor shall be required in connection therewith. Further,
no notice shall be required of such pledge. At the appropriate Purchaser’s expense, the Company will execute and deliver
such reasonable documentation as a pledgee or secured party of Securities may reasonably request in connection with a pledge or
transfer of the Securities, including, if the Securities are subject to registration pursuant to the Registration Rights Agreement,
the preparation and filing of any required prospectus supplement under Rule 424(b)(3) under the Securities Act or other applicable
provision of the Securities Act to appropriately amend the list of Selling Stockholders (as defined in the Registration Rights
Agreement) thereunder.

(c)               
Certificates evidencing the Underlying Shares shall not contain any legend (including the legend set forth in Section 4.1(b) hereof):
(i) while a registration statement (including the Registration Statement) covering the resale of such security is effective under
the Securities Act, (ii) following any sale of such Underlying Shares pursuant to Rule 144, (iii) if such Underlying Shares are
eligible for sale under Rule 144 or (iv) if such legend is not required under applicable requirements of the Securities Act (including
judicial interpretations and pronouncements issued by the staff of the Commission). The Company shall cause its counsel to issue
a legal opinion to the Transfer Agent if required by the Transfer Agent to effect the removal of the legend hereunder. If all
or any shares of Preferred Stock are converted or any portion of a Warrant is exercised at a time when there is an effective registration
statement to cover the resale of the Underlying Shares, or if such Underlying Shares may be sold under Rule 144 or if such legend
is not otherwise required under applicable requirements of the Securities Act (including judicial interpretations and pronouncements
issued by the staff of the Commission) then such Underlying Shares shall be issued free of all legends. The Company agrees that
following such time as such legend is no longer required under this Section 4.1(c), it will, no later than three Trading Days
following the delivery by a Purchaser to the Company or the Transfer Agent of a certificate representing Underlying Shares, as
applicable, issued with a restrictive legend (such third Trading Day, the “Legend Removal Date”), deliver or
cause to be delivered to such Purchaser a certificate representing such shares that is free from all restrictive and other legends.
The Company may not make any notation on its records or give instructions to the Transfer Agent that enlarge the restrictions
on transfer set forth in this Section 4. Certificates for Underlying Shares subject to legend removal hereunder shall be transmitted
by the Transfer Agent to the Purchaser by crediting the account of the Purchaser’s prime broker with the Depository Trust
Company System as directed by such Purchaser.

(d)              
In addition to such Purchaser’s other available remedies, the Company shall pay to a Purchaser, in cash, the greater of
(i) as partial liquidated damages and not as a penalty, for each $1,000 of Underlying Shares (based on the VWAP of the Common
Stock on the date such Securities are submitted to the Transfer Agent) delivered for removal of the restrictive legend and subject
to Section 4.1(c), $10 per Trading Day (increasing to $20 per Trading Day five (5) Trading Days after such damages have begun
to accrue) for each Trading Day after the Legend Removal Date until such certificate is delivered without a legend and (ii) if
the Company fails to (A) issue and deliver (or cause to be delivered) to a Purchaser by the Legend Removal Date a certificate
representing the Securities so delivered to the Company by such Purchaser that is free from all restrictive and other legends
or (B) if after the Legend Removal Date such Purchaser purchases (in an open market transaction or otherwise) shares of Common
Stock to deliver in satisfaction of a sale by such Purchaser of all or any portion of the number of shares of Common Stock, or
a sale of a number of shares of Common Stock equal to all or any portion of the number of shares of Common Stock that such Purchaser
anticipated receiving from the Company without any restrictive legend, then, an amount equal to the excess of such Purchaser’s
total purchase price (including brokerage commissions and other out-of-pocket expenses, if any) for the shares of Common Stock
so purchased (including brokerage commissions and other out-of-pocket expenses, if any) (the “Buy-In
Price”) over the product of (x) such number of Underlying Shares that the Company was required to deliver to
such Purchaser by the Legend Removal Date multiplied by (y) the lowest closing sale price of the Common Stock on any Trading Day
during the period commencing on the date of the delivery by such Purchaser to the Company of the applicable Underlying Shares
(as the case may be) and ending on the date of such delivery and payment under this clause (ii). Nothing herein shall limit such
Purchaser’s right to pursue actual damages for the Company’s failure to deliver certificates representing any Securities
as required by the Transaction Documents, and such Purchaser shall have the right to pursue all remedies available to it at law
or in equity including, without limitation, a decree of specific performance and/or injunctive relief.

(e)               
Each Purchaser, severally and not jointly with the other Purchasers, agrees with the Company that such Purchaser will sell any
Securities pursuant to either the registration requirements of the Securities Act, including any applicable prospectus delivery
requirements, or an exemption therefrom, and that if Securities are sold pursuant to a Registration Statement, they will be sold
in compliance with the plan of distribution set forth therein, and acknowledges that the removal of the restrictive legend from
certificates representing Securities as set forth in this Section 4.1 is predicated upon the Company’s reliance upon this
understanding.

4.2             
Acknowledgment of Dilution. The Company acknowledges that the issuance of the Securities may result in dilution of the
outstanding shares of Common Stock, which dilution may be substantial under certain market conditions. The Company further acknowledges
that its obligations under the Transaction Documents, including, without limitation, its obligation to issue the Underlying Shares
pursuant to the Transaction Documents, are unconditional and absolute and not subject to any right of set off, counterclaim, delay
or reduction, regardless of the effect of any such dilution or any claim the Company may have against any Purchaser and regardless
of the dilutive effect that such issuance may have on the ownership of the other stockholders of the Company.

4.3             
Furnishing of Information; Public Information. 

(a)
Until the earliest of the time that (i) no Purchaser owns Securities or (ii) the Warrants have expired, the Company covenants
to maintain the registration of the Common Stock under Section 12(b) or 12(g) of the Exchange Act and to timely file (or obtain
extensions in respect thereof and file within the applicable grace period) all reports required to be filed by the Company after
the date hereof pursuant to the Exchange Act even if the Company is not then subject to the reporting requirements of the Exchange
Act.

(b)
At any time during the period commencing from the six (6) month anniversary of the date hereof and ending at such time that
all of the Securities may be sold without the requirement for the Company to be in compliance with Rule 144(c)(1) and otherwise
without restriction or limitation pursuant to Rule 144, if the Company shall fail for any reason to satisfy the current public
information requirement under Rule 144(c) (a “Public Information Failure”) then, in addition to such Purchaser’s
other available remedies, the Company shall pay to a Purchaser, in cash, as partial liquidated damages and not as a penalty, by
reason of any such delay in or reduction of its ability to sell the Securities, an amount in cash equal to two percent (2.0%)
of the aggregate Stated Value of Preferred Stock held by such Purchaser on the day of a Public Information Failure and on every
thirtieth (30th) day (pro-rated for periods totaling less than thirty days) thereafter until the earlier of (a) the date such
Public Information Failure is cured and (b) such time that such public information is no longer required for the Purchasers to
transfer the Underlying Shares pursuant to Rule 144. The payments to which a Purchaser shall be entitled pursuant to this Section
4.3(b) are referred to herein as “Public Information Failure Payments.” Public Information Failure Payments
shall be paid on the earlier of (i) the last day of the calendar month during which such Public Information Failure Payments are
incurred and (ii) the third (3rd) Business Day after the event or failure giving rise to the Public Information Failure Payments
is cured. In the event the Company fails to make Public Information Failure Payments in a timely manner, such Public Information
Failure Payments shall bear interest at the rate of 1.5% per month (prorated for partial months) until paid in full. Nothing herein
shall limit such Purchaser’s right to pursue actual damages for the Public Information Failure, and such Purchaser shall
have the right to pursue all remedies available to it at law or in equity including, without limitation, a decree of specific
performance and/or injunctive relief.

4.4             
Integration. The Company shall not sell, offer for sale or solicit offers to buy or otherwise negotiate in respect of any
security (as defined in Section 2 of the Securities Act) that would be integrated with the offer or sale of the Securities in
a manner that would require the registration under the Securities Act of the sale of the Securities or that would be integrated
with the offer or sale of the Securities for purposes of the rules and regulations of any Trading Market such that it would require
shareholder approval prior to the closing of such other transaction unless shareholder approval is obtained before the closing
of such subsequent transaction.

4.5             
Conversion and Exercise Procedures. Each of the form of Notice of Exercise included in the Warrants and the form of Notice
of Conversion included in the Certificate of Designation set forth the totality of the procedures required of the Purchasers in
order to exercise the Warrants or convert the Preferred Stock. Without limiting the preceding sentences, no ink-original Notice
of Exercise or Notice of Conversion shall be required, nor shall any medallion guarantee (or other type of guarantee or notarization)
of any Notice of Exercise or Notice of Conversion form be required in order to exercise the Warrants or convert the Preferred
Stock. No additional legal opinion, other information or instructions shall be required of the Purchasers to exercise their Warrants
or convert their Preferred Stock. The Company shall honor exercises of the Warrants and conversions of the Preferred Stock and
shall deliver Underlying Shares in accordance with the terms, conditions and time periods set forth in the Transaction Documents.

4.6             
Securities Laws Disclosure; Publicity. The Company shall, prior to 4:00 p.m. (New York City time) on the date hereof, issue
a press release disclosing the material terms of the transactions contemplated hereby and shall file a Current Report on Form
8-K, including the Transaction Documents as exhibits thereto, prior to 9:30 a.m. (New York City time) on the Trading Day immediately
following the date hereof. From and after the issuance of such press release, the Company represents to the Purchasers that it
shall have publicly disclosed all material, non-public information delivered to any of the Purchasers by the Company or any of
its Subsidiaries, or any of their respective officers, directors, employees or agents in connection with the transactions contemplated
by the Transaction Documents. The Company and each Purchaser shall consult with each other in issuing any other press releases
with respect to the transactions contemplated hereby, and neither the Company nor any Purchaser shall issue any such press release
nor otherwise make any such public statement without the prior consent of the Company, with respect to any press release of any
Purchaser, or without the prior consent of each Purchaser, with respect to any press release of the Company, which consent shall
not unreasonably be withheld or delayed, except if such disclosure is required by law, in which case the disclosing party shall
promptly provide the other party with prior notice of such public statement or communication. Notwithstanding the foregoing, the
Company shall not publicly disclose the name of any Purchaser, or include the name of any Purchaser in any filing with the Commission
or any regulatory agency or Trading Market, without the prior written consent of such Purchaser, except: (a) as required by federal
securities law in connection with any registration statement contemplated by the Registration Rights Agreement and the filing
of final Transaction Documents with the Commission and (b) to the extent such disclosure is required by law or Trading Market
regulations, in which case the Company shall provide the Purchasers with prior notice of such disclosure permitted under this
clause (b).

4.7             
Shareholder Rights Plan. No claim will be made or enforced by the Company or, with the consent of the Company, any other
Person, that any Purchaser is an “Acquiring Person” under any control share acquisition, business combination, poison
pill (including any distribution under a rights agreement) or similar anti-takeover plan or arrangement in effect or hereafter
adopted by the Company, or that any Purchaser could be deemed to trigger the provisions of any such plan or arrangement, by virtue
of receiving Securities under the Transaction Documents or under any other agreement between the Company and the Purchasers.

4.8             
Non-Public Information. Except with respect to the material terms and conditions of the transactions contemplated by the
Transaction Documents, which shall be disclosed pursuant to Section 4.6, the Company covenants and agrees that neither it, nor
any other Person acting on its behalf will provide any Purchaser or its agents or counsel with any information that the Company
believes constitutes material non-public information, unless prior thereto such Purchaser shall have consented to the receipt
of such information and agreed with the Company to keep such information confidential. The Company understands and confirms that
each Purchaser shall be relying on the foregoing covenant in effecting transactions in securities of the Company. To the extent
that the Company delivers any material, non-public information to a Purchaser without such Purchaser’s consent, the Company
hereby covenants and agrees that such purchaser shall not have any duty of confidentiality to Company, any of its Subsidiaries,
or any of their respective officers, directors, agents, employees or Affiliates, or a duty to the Company, and of its Subsidiaries
or any of their respective officers, directors, agents, employees or Affiliates not to trade on the basis of, such material, non-public
information, provided that the Purchaser shall remain subject to applicable law. To the extent that any notice provided pursuant
to any Transaction Document constitutes, or contains, material, non-public information regarding the Company or any Subsidiaries,
the Company shall simultaneously file such notice with the Commission pursuant to a Current Report on Form 8-K. The Company understands
and confirms that each Purchaser shall be relying on the foregoing covenant in effecting transactions in securities of the Company.

4.9             
Use of Proceeds. Except as set forth on Schedule 4.9 attached hereto, the Company shall use the net proceeds from
the sale of the Securities hereunder for working capital purposes and shall not use such proceeds: (a) for the satisfaction of
any portion of the Company’s debt (other than payment of trade payables in the ordinary course of the Company’s business
and prior practices), (b) for the redemption of any Common Stock or Common Stock Equivalents, (c) for the settlement of any outstanding
litigation or (d) in violation of FCPA or OFAC regulations.

4.10         
Indemnification of Purchasers. Subject to the provisions of this Section 4.10, the Company will indemnify and hold each
Purchaser and its directors, officers, shareholders, members, partners, employees and agents (and any other Persons with a functionally
equivalent role of a Person holding such titles notwithstanding a lack of such title or any other title), each Person who controls
such Purchaser (within the meaning of Section 15 of the Securities Act and Section 20 of the Exchange Act), and the directors,
officers, shareholders, agents, members, partners or employees (and any other Persons with a functionally equivalent role of a
Person holding such titles notwithstanding a lack of such title or any other title) of such controlling persons (each, a “Purchaser
Party”) harmless from any and all losses, liabilities, obligations, claims, contingencies, damages, costs and expenses,
including all judgments, amounts paid in settlements, court costs and reasonable attorneys’ fees and costs of investigation
that any such Purchaser Party may suffer or incur as a result of or relating to (a) any breach of any of the representations,
warranties, covenants or agreements made by the Company in this Agreement or in the other Transaction Documents or (b) any action
instituted against Purchaser Parties in any capacity, or any of them or their respective Affiliates, by any stockholder of the
Company who is not an Affiliate of such Purchaser Party, with respect to any of the transactions contemplated by the Transaction
Documents (unless such action is based upon a breach of such Purchaser Party’s representations, warranties or covenants
under the Transaction Documents or any agreements or understandings such Purchaser Party may have with any such stockholder or
any violations by such Purchaser Party of state or federal securities laws or any conduct by such Purchaser Party which constitutes
fraud, gross negligence, willful misconduct or malfeasance). If any action shall be brought against any Purchaser Party in respect
of which indemnity may be sought pursuant to this Agreement, such Purchaser Party shall promptly notify the Company in writing,
and the Company shall have the right to assume the defense thereof with counsel of its own choosing reasonably acceptable to the
Purchaser Party. Any Purchaser Party shall have the right to employ separate counsel in any such action and participate in the
defense thereof, but the fees and expenses of such counsel shall be at the expense of such Purchaser Party except to the extent
that (i) the employment thereof has been specifically authorized by the Company in writing, (ii) the Company has failed after
a reasonable period of time to assume such defense and to employ counsel or (iii) in such action there is, in the reasonable opinion
of counsel, a material conflict on any material issue between the position of the Company and the position of such Purchaser Party,
in which case the Company shall be responsible for the reasonable fees and expenses of no more than one such separate counsel.
The Company will not be liable to any Purchaser Party under this Agreement (y) for any settlement by a Purchaser Party effected
without the Company’s prior written consent, which shall not be unreasonably withheld or delayed; or (z) to the extent,
but only to the extent that a loss, claim, damage or liability is attributable to any Purchaser Party’s breach of its representations,
warranties or covenants under the Transaction Documents or any agreements or understandings such Purchaser Party may have with
any such stockholder or any violations by such Purchaser Party of state or federal securities laws or any conduct by such Purchaser
Party which constitutes fraud, gross negligence, willful misconduct or malfeasance. The indemnification required by this Section
4.10 shall be made by periodic payments of the amount thereof during the course of the investigation or defense, as and when bills
are received or are incurred. The indemnity agreements contained herein shall be in addition to any cause of action or similar
right of any Purchaser Party against the Company or others and any liabilities the Company may be subject to pursuant to law.

4.11         
Reservation and Listing of Securities.

(a)               
On the date hereof, the Company shall maintain a reserve from its duly authorized shares of Common Stock for issuance pursuant
to the Transaction Documents an aggregate of 76,666,666 shares of Common Stock. On the business day immediately following the
Authorized Share Approval Date, the Company shall maintain a reserve from its duly authorized shares of Common Stock for issuance
pursuant to the Transaction Documents in such amount as may then be required to fulfill its obligations in full under the Transaction
Documents.

(b)              
If, on any date following the date hereof, the number of authorized but unissued (and otherwise unreserved) shares of Common Stock
is less than the Required Minimum on such date, then the Board of Directors shall use commercially reasonable efforts to amend
the Company’s certificate or articles of incorporation to increase the number of authorized but unissued shares of Common
Stock to at least the Required Minimum at such time, as soon as possible and in any event not later than the 75th day after such
date.

(c)               
The Company shall, if applicable: (i) in the time and manner required by the principal Trading Market, prepare and file with such
Trading Market an additional shares listing application covering a number of shares of Common Stock at least equal to the Required
Minimum on the date of such application, (ii) take all steps necessary to cause such shares of Common Stock to be approved for
listing or quotation on such Trading Market as soon as possible thereafter, (iii) provide to the Purchasers evidence of such listing
or quotation and (iv) maintain the listing or quotation of such Common Stock on any date at least equal to the Required Minimum
on such date on such Trading Market or another Trading Market. The Company agrees to maintain the eligibility of the Common Stock
for electronic transfer through the Depository Trust Company or another established clearing corporation, including, without limitation,
by timely payment of fees to the Depository Trust Company or such other established clearing corporation in connection with such
electronic transfer.

In
addition, the Company shall hold an annual or special meeting of stockholders within 60 calendar days of the date hereof for the
purpose of obtaining Authorized Share Approval, with the recommendation of the Company’s Board of Directors that such proposal
is approved, and the Company shall solicit proxies from its stockholders in connection therewith in the same manner as all other
management proposals in such proxy statement and all management-appointed proxyholders shall vote their proxies in favor of such
proposal. If the Company does not obtain Authorized Share Approval at the first meeting, the Company shall call a meeting every
four (4) months thereafter to seek Authorized Share Approval until the earlier of the date on which Authorized Share Approval
is obtained or the date on which no shares of Preferred Stock remain outstanding.

 

4.12         
Participation in Future Financing. 

(a)               
Subject only to the rights of investors party to that certain securities purchase agreements dated June 17, 2013 and January 14,
2014, from the date hereof until the date that is the 12 month anniversary of the Closing Date, upon any proposed issuance by
the Company or any of its Subsidiaries of Common Stock, Common Stock Equivalents for cash consideration, Indebtedness or a combination
thereof, other than (i) a rights offering to all holders of Common Stock (which may include extending such rights offering to
holders of Preferred Stock) or (ii) issuance of shares of Common Stock for the purpose of paying bona fide non-Affiliate
vendors of goods and services to the Company at fair market value at the time of issuance (not to exceed $75,000 per calendar
quarter through the earlier of October 31, 2016 or all of the Preferred Stock has been converted), (a “Subsequent Financing”),
each Purchaser shall have the right to participate in up to an amount of the Subsequent Financing equal to 100% of the Subsequent
Financing (the “Participation Maximum”) on the same terms, conditions and price provided for in the Subsequent
Financing, unless the Subsequent Financing is an underwritten public offering, in which case the Company shall offer each Purchaser
the right to participate in such public offering when it is lawful for the Company to do so, but no Purchaser shall be entitled
to purchase any particular amount of such public offering.

(b)              
At least five (5) Trading Days prior to the closing of the Subsequent Financing, the Company shall deliver to each Purchaser a
written notice of its intention to effect a Subsequent Financing (“Pre-Notice”), which Pre-Notice shall ask
such Purchaser if it wants to review the details of such financing (such additional notice, a “Subsequent Financing Notice”).
Upon the request of a Purchaser, and only upon a request by such Purchaser, for a Subsequent Financing Notice, the Company shall
promptly, but no later than one (1) Trading Day after such request, deliver a Subsequent Financing Notice to such Purchaser. The
requesting Purchaser shall be deemed to have acknowledged that the Subsequent Financing Notice may contain material non-public
information. The Subsequent Financing Notice shall describe in reasonable detail the proposed terms of such Subsequent Financing,
the amount of proceeds intended to be raised thereunder and the Person or Persons through or with whom such Subsequent Financing
is proposed to be effected and shall include a term sheet or similar document relating thereto as an attachment. 

(c)               
Any Purchaser desiring to participate in such Subsequent Financing must provide written notice to the Company by not later than
5:30 p.m. (New York City time) on the fifth (5th) Trading Day after all of the Purchasers have received the Pre-Notice
that the Purchaser is willing to participate in the Subsequent Financing, the amount of such Purchaser’s participation,
and representing and warranting that such Purchaser has such funds ready, willing, and available for investment on the terms set
forth in the Subsequent Financing Notice. If the Company receives no such notice from a Purchaser as of such fifth (5th)
Trading Day, such Purchaser shall be deemed to have notified the Company that it does not elect to participate. 

(d)              
If by 5:30 p.m. (New York City time) on the fifth (5th ) Trading Day after all of the Purchasers have received the
Pre-Notice, notifications by the Purchasers of their willingness to participate in the Subsequent Financing (or to cause their
designees to participate) is, in the aggregate, less than the total amount of the Subsequent Financing, then the Company may effect
the remaining portion of such Subsequent Financing on the terms and with the Persons set forth in the Subsequent Financing Notice.

(e)   
If by 5:30 p.m. (New York City time) on the fifth (5th) Trading Day after all of the Purchasers have received the Pre-Notice,
the Company receives responses to a Subsequent Financing Notice from Purchasers seeking to purchase more than the aggregate amount
of the Participation Maximum, each such Purchaser shall have the right to purchase its Pro Rata Portion (as defined below) of
the Participation Maximum.  “Pro Rata Portion” means the ratio of (x) the Subscription Amount of Securities
purchased on the Closing Date by a Purchaser participating under this Section 4.12 and (y) the sum of the aggregate Subscription
Amounts of Securities purchased on the Closing Date by all Purchasers participating under this Section 4.12.

(f)               
The Company must provide the Purchasers with a second Subsequent Financing Notice, and the Purchasers will again have the right
of participation set forth above in this Section 4.12, if the Subsequent Financing subject to the initial Subsequent Financing
Notice is not consummated for any reason on the terms set forth in such Subsequent Financing Notice within thirty (30) Trading
Days after the date of the initial Subsequent Financing Notice.

(g)              
The Company and each Purchaser agree that if any Purchaser elects to participate in the Subsequent Financing, the transaction
documents related to the Subsequent Financing shall not include any term or provision whereby such Purchaser shall be required
to agree to any restrictions on trading as to any of the Securities purchased hereunder (for avoidance of doubt, the securities
purchased in the Subsequent Financing shall not be considered securities purchased hereunder) or be required to consent to any
amendment to or termination of, or grant any waiver, release or the like under or in connection with, this Agreement, without
the prior written consent of such Purchaser.

(h)              
Notwithstanding anything to the contrary in this Section
4.12 and unless otherwise agreed to by such Purchaser, the Company shall either confirm in writing to such Purchaser that the
transaction with respect to the Subsequent Financing has been abandoned or shall publicly disclose its intention to issue the
securities in the Subsequent Financing, in either case in such a manner such that such Purchaser will not be in possession of
any material, non-public information, by the tenth (10th) Business Day following delivery of the Subsequent Financing Notice.
If by such tenth (10th) Business Day, no public disclosure regarding a transaction with respect to the Subsequent Financing has
been made, and no notice regarding the abandonment of such transaction has been received by such Purchaser, such transaction shall
be deemed to have been abandoned and such Purchaser shall not be deemed to be in possession of any material, non-public information
with respect to the Company or any of its Subsidiaries.

(i)                
Notwithstanding the foregoing, this Section 4.12 shall not apply in respect of (i) an Exempt Issuance, (ii) an underwritten public
offering of Common Stock or (iii) shares of Common Stock issued in settlement of outstanding severance packages with former officers
and directors of the Company.

4.13         
Subsequent Equity Sales. 

(a)               
Except as provided in paragraph (d) herein, from the date hereof until 60 days after the date the initial Registration Statement
is declared effective by the Commission, neither the Company nor any Subsidiary shall issue, enter into any agreement to issue
or announce the issuance or proposed issuance of any shares of Common Stock or Common Stock Equivalents.

(b)              
From the date hereof until the later of (i) the date that is the 12 month anniversary of the Closing Date and (ii) such time as
not more than 15% of the originally issued Preferred Stock remains outstanding, the Company shall be prohibited from effecting
or entering into an agreement to effect any issuance by the Company or any of its Subsidiaries of Common Stock or Common Stock
Equivalents for cash consideration (or a combination of units thereof) involving a Variable Rate Transaction. “Variable
Rate Transaction” means a transaction in which the Company (i) issues or sells any debt or equity securities that are
convertible into, exchangeable or exercisable for, or include the right to receive, additional shares of Common Stock either (A)
at a conversion price, exercise price or exchange rate or other price that is based upon, and/or varies with, the trading prices
of or quotations for the shares of Common Stock at any time after the initial issuance of such debt or equity securities or (B)
with a conversion, exercise or exchange price that is subject to being reset at some future date after the initial issuance of
such debt or equity security or upon the occurrence of specified or contingent events directly or indirectly related to the business
of the Company or the market for the Common Stock or (ii) enters into any agreement, including, but not limited to, an equity
line of credit, whereby the Company may sell securities at a future determined price. Any Purchaser shall be entitled to obtain
injunctive relief against the Company to preclude any such issuance, which remedy shall be in addition to any right to collect
damages. 

(c)               
[RESERVED]

(d)              
Notwithstanding the foregoing, this Section 4.13 shall not apply in respect of (i) any rights offering, (ii) shares of Common
Stock for the purpose of paying bona fide non-Affiliate vendors of goods and services to the Company at fair market value
at the time of issuance (not to exceed $75,000 per calendar quarter through the earlier of October 31, 2016 or all of the Preferred
Stock has been converted), or (iii) any Exempt Issuance, except that no Variable Rate Transaction, other than the issuance of
Common Stock upon exercise of Warrants outstanding on the date hereof, shall be an Exempt Issuance.

(e)               
Section 4.13(a) shall not apply to the issuance of securities by the Company’s Subsidiary, Antigen Express, Inc. (“Antigen”),
or the sale of Antigen securities by the Company or the distribution of Antigen securities to the Company’s stockholders.

4.14         
Equal Treatment of Purchasers. No consideration (including any modification of any Transaction Document) shall be offered
or paid to any Person to amend or consent to a waiver or modification of any provision of any of this Agreement unless the same
consideration is also offered to all of the parties to this Agreement. For clarification purposes, this provision constitutes
a separate right granted to each Purchaser by the Company and negotiated separately by each Purchaser, and is intended for the
Company to treat the Purchasers as a class and shall not in any way be construed as the Purchasers acting in concert or as a group
with respect to the purchase, disposition or voting of Securities or otherwise. 

4.15         
Most Favored Nation Provision. From the date hereof until such time as no Purchaser holds any of the Securities, in the
event that the Company issues or sells any Common Stock or Common Stock Equivalents, if a Purchaser then holding Securities reasonably
believes that any of the terms and conditions appurtenant to such issuance or sale are more favorable to such investors than are
the terms and conditions granted to the Purchasers hereunder, upon notice to the Company by such Purchaser within five Trading
Days after disclosure of such issuance or sale, the Company shall amend the terms of this transaction as to such Purchaser only
so as to give such Purchaser the benefit of such more favorable terms or conditions. This Section 4.15 shall not apply with respect
to an Exempt Issuance, and shall only apply as to price terms in respect of any rights offering, or in respect of issuances of
Common Stock to vendors as otherwise permitted in Sections 4.12 and 4.13. The Company shall provide each Purchaser with notice
of any such issuance or sale in the manner for disclosure of Subsequent Financings set forth in Section 4.12.

4.16         
Certain Transactions and Confidentiality. Each Purchaser, severally and not jointly with the other Purchasers, covenants
that neither it, nor any Affiliate acting on its behalf or pursuant to any understanding with it will execute any purchases or
sales, including Short Sales, of any of the Company’s securities during the period commencing with the execution of this
Agreement and ending at such time that the transactions contemplated by this Agreement are first publicly announced pursuant to
the initial press release as described in Section 4.6.  Each Purchaser, severally and not jointly with the other Purchasers,
covenants that until such time as the transactions contemplated by this Agreement are publicly disclosed by the Company pursuant
to the initial press release as described in Section 4.6, such Purchaser will maintain the confidentiality of the existence and
terms of this transaction and the information included in the Transaction Documents and the Disclosure Schedules. Notwithstanding
the foregoing, and notwithstanding anything contained in this Agreement to the contrary, the Company expressly acknowledges and
agrees that (i) no Purchaser makes any representation, warranty or covenant hereby that it will not engage in effecting transactions
in any securities of the Company after the time that the transactions contemplated by this Agreement are first publicly announced
pursuant to the initial press release as described in Section 4.6, (ii) no Purchaser shall be restricted or prohibited from effecting
any transactions in any securities of the Company in accordance with applicable securities laws from and after the time that the
transactions contemplated by this Agreement are first publicly announced pursuant to the initial press release as described in
Section 4.6 and (iii) no Purchaser shall have any duty of confidentiality to the Company or its Subsidiaries after the issuance
of the initial press release as described in Section 4.6.  Notwithstanding the foregoing, in the case of a Purchaser that
is a multi-managed investment vehicle whereby separate portfolio managers manage separate portions of such Purchaser’s assets
and the portfolio managers have no direct knowledge of the investment decisions made by the portfolio managers managing other
portions of such Purchaser’s assets, the covenant set forth above shall only apply with respect to the portion of assets
managed by the portfolio manager that made the investment decision to purchase the Securities covered by this Agreement.

4.17         
[RESERVED]

4.18         
Capital Changes. Until the one year anniversary of the Closing Date, the Company shall not undertake a reverse or forward
stock split or reclassification of the Common Stock without the prior written consent of the Purchasers holding a majority in
interest of the shares of Preferred Stock, unless such reverse split is made in conjunction with the listing of the Common Stock
on a national securities exchange.

4.19         
Form D; Blue Sky Filings. The Company agrees to timely file a Form D with respect to the Securities as required under Regulation
D and to provide a copy thereof, promptly upon request of any Purchaser. The Company shall take such action as the Company shall
reasonably determine is necessary in order to obtain an exemption for, or to qualify the Securities for, sale to the Purchasers
at the Closing under applicable securities or “Blue Sky” laws of the states of the United States, and shall provide
evidence of such actions promptly upon request of any Purchaser.

4.20Greenshoe.

(a)From
the Authorized Share Approval Date until the one year anniversary of the Authorized Share Approval Date, each Purchaser may, in
its sole determination, elect to purchase, severally and not jointly with the other Purchasers and, subject to the proviso below,
in one or more purchases, in the ratio of such Purchaser’s original Subscription Amount to the original aggregate Subscription
Amount of all Purchasers, additional shares of Preferred Stock and Warrants with an aggregate subscription amount thereof of up
to $500,000 (such securities, the “Greenshoe Securities” and such right to receive the Greenshoe Securities
pursuant to this Section 4.20, the “Greenshoe Rights”). The Greenshoe Securities shall be identical to the
Securities, and shall have a conversion price and exercise price, as applicable, equal to (i) the then-effective conversion price
of the Preferred Stock and exercise price of the Warrants, or (ii) if the Preferred Stock and/or Warrants are no longer outstanding,
the most recent conversion price and exercise price of the Preferred Stock and/or Warrants, as applicable.

(b)Any
Greenshoe Right exercised by a Purchaser shall close within 10 Trading Days of a duly delivered exercise notice by the exercising
party. Any additional investment in the Greenshoe Securities shall be on terms identical to those set forth in the Transaction
Documents, mutatis mutandis. In order to effectuate a purchase and sale of the Greenshoe Securities, the Company and the
Purchasers shall enter into a Securities Purchase Agreement identical to this Agreement, mutatis mutandis and shall include updated
disclosure schedules

ARTICLE
V. 

MISCELLANEOUS

5.1             
Termination.  This Agreement may be terminated by any Purchaser, as to such Purchaser’s obligations hereunder
only and without any effect whatsoever on the obligations between the Company and the other Purchasers, by written notice to the
other parties, if the Closing has not been consummated on or before July 1, 2015; provided, however, that such termination
will not affect the right of any party to sue for any breach by any other party (or parties).

5.2             
Fees and Expenses. At the Closing, the Company has agreed to reimburse Alpha Capital Anstalt the non-accountable sum of
$25,000 for its legal fees and due diligence expenses, none of which has been paid prior to the Closing. Accordingly, in lieu
of the foregoing payments, the aggregate amount that Alpha is to pay for the Securities at the Closing shall be reduced by $25,000
in lieu thereof. Except as expressly set forth in the Transaction Documents to the contrary, each party shall pay the fees and
expenses of its advisers, counsel, accountants and other experts, if any, and all other expenses incurred by such party incident
to the negotiation, preparation, execution, delivery and performance of this Agreement. The Company shall pay all Transfer Agent
fees (including, without limitation, any fees required for same-day processing of any instruction letter delivered by the Company
and any conversion or exercise notice delivered by a Purchaser), stamp taxes and other taxes and duties levied in connection with
the delivery of any Securities to the Purchasers.

5.3             
Entire Agreement. The Transaction Documents, together with the exhibits and schedules thereto, contain the entire understanding
of the parties with respect to the subject matter hereof and thereof and supersede all prior agreements and understandings, oral
or written, with respect to such matters, which the parties acknowledge have been merged into such documents, exhibits and schedules.

5.4             
Notices. Any and all notices or other communications or deliveries required or permitted to be provided hereunder shall
be in writing and shall be deemed given and effective on the earliest of: (a) the date of transmission, if such notice or communication
is delivered via facsimile or e-mail attachment at the facsimile number or e-mail address set forth on the signature pages attached
hereto at or prior to 5:30 p.m. (New York City time) on a Trading Day, (b) the next Trading Day after the date of transmission,
if such notice or communication is delivered via facsimile or e-mail attachment at the facsimile number or e-mail address set
forth on the signature pages attached hereto on a day that is not a Trading Day or later than 5:30 p.m. (New York City time) on
any Trading Day, (c) the second (2nd) Trading Day following the date of mailing, if sent by U.S. nationally recognized
overnight courier service or (d) upon actual receipt by the party to whom such notice is required to be given. The address for
such notices and communications shall be as set forth on the signature pages attached hereto. To the extent that any notice provided
pursuant to any Transaction Document constitutes, or contains, material, non-public information regarding the Company or any of
the Subsidiaries (except as specifically contemplated in the third sentence Section 4.12(b)), the Company shall simultaneously
file such notice with the Commission pursuant to a Current Report on Form 8-K.

5.5             
Amendments; Waivers. No provision of this Agreement may be waived, modified, supplemented or amended except in a written
instrument signed, in the case of an amendment, by the Company and the Purchasers holding at least 67% in interest of the Securities
then outstanding or, in the case of a waiver, by the party against whom enforcement of any such waived provision is sought. No
waiver of any default with respect to any provision, condition or requirement of this Agreement shall be deemed to be a continuing
waiver in the future or a waiver of any subsequent default or a waiver of any other provision, condition or requirement hereof,
nor shall any delay or omission of any party to exercise any right hereunder in any manner impair the exercise of any such right.

5.6             
Headings. The headings herein are for convenience only, do not constitute a part of this Agreement and shall not be deemed
to limit or affect any of the provisions hereof.

5.7             
Successors and Assigns. This Agreement shall be binding upon and inure to the benefit of the parties and their successors
and permitted assigns. The Company may not assign this Agreement or any rights or obligations hereunder without the prior written
consent of each Purchaser (other than by merger). Any Purchaser may assign any or all of its rights under this Agreement to any
Person to whom such Purchaser assigns or transfers any Securities, provided that such transferee agrees in writing to be bound,
with respect to the transferred Securities, by the provisions of the Transaction Documents that apply to the “Purchasers.”

5.8             
No Third-Party Beneficiaries. This Agreement is intended for the benefit of the parties hereto and their respective successors
and permitted assigns and is not for the benefit of, nor may any provision hereof be enforced by, any other Person, except as
otherwise set forth in Section 4.10.

5.9             
Governing Law. All questions concerning the construction, validity, enforcement and interpretation of the Transaction Documents
shall be governed by and construed and enforced in accordance with the internal laws of the State of New York, without regard
to the principles of conflicts of law thereof. Each party agrees that all legal Proceedings concerning the interpretations, enforcement
and defense of the transactions contemplated by this Agreement and any other Transaction Documents (whether brought against a
party hereto or its respective affiliates, directors, officers, shareholders, partners, members, employees or agents) shall be
commenced exclusively in the state and federal courts sitting in the City of New York. Each party hereby irrevocably submits to
the exclusive jurisdiction of the state and federal courts sitting in the City of New York, Borough of Manhattan for the adjudication
of any dispute hereunder or in connection herewith or with any transaction contemplated hereby or discussed herein (including
with respect to the enforcement of any of the Transaction Documents), and hereby irrevocably waives, and agrees not to assert
in any Action or Proceeding, any claim that it is not personally subject to the jurisdiction of any such court, that such Action
or Proceeding is improper or is an inconvenient venue for such Proceeding. Each party hereby irrevocably waives personal service
of process and consents to process being served in any such Action or Proceeding by mailing a copy thereof via registered or certified
mail or overnight delivery (with evidence of delivery) to such party at the address in effect for notices to it under this Agreement
and agrees that such service shall constitute good and sufficient service of process and notice thereof. Nothing contained herein
shall be deemed to limit in any way any right to serve process in any other manner permitted by law. If either party shall commence
an Action or Proceeding to enforce any provisions of the Transaction Documents, then, in addition to the obligations of the Company
under Section 4.10, the prevailing party in such Action or Proceeding shall be reimbursed by the other party for its reasonable
attorneys’ fees and other costs and expenses incurred with the investigation, preparation and prosecution of such Action
or Proceeding.

5.10         
Survival. The representations and warranties contained herein shall survive the Closing and the delivery of the Securities.

5.11         
Execution. This Agreement may be executed in two or more counterparts, all of which when taken together shall be considered
one and the same agreement and shall become effective when counterparts have been signed by each party and delivered to each other
party, it being understood that the parties need not sign the same counterpart. In the event that any signature is delivered by
facsimile transmission or by e-mail delivery of a “.pdf” format data file, such signature shall create a valid and
binding obligation of the party executing (or on whose behalf such signature is executed) with the same force and effect as if
such facsimile or “.pdf” signature page were an original thereof.

5.12         
Severability. If any term, provision, covenant or restriction of this Agreement is held by a court of competent jurisdiction
to be invalid, illegal, void or unenforceable, the remainder of the terms, provisions, covenants and restrictions set forth herein
shall remain in full force and effect and shall in no way be affected, impaired or invalidated, and the parties hereto shall use
their commercially reasonable efforts to find and employ an alternative means to achieve the same or substantially the same result
as that contemplated by such term, provision, covenant or restriction. It is hereby stipulated and declared to be the intention
of the parties that they would have executed the remaining terms, provisions, covenants and restrictions without including any
of such that may be hereafter declared invalid, illegal, void or unenforceable.

5.13         
Rescission and Withdrawal Right. Notwithstanding anything to the contrary contained in (and without limiting any similar
provisions of) any of the other Transaction Documents, whenever any Purchaser exercises a right, election, demand or option under
a Transaction Document and the Company does not timely perform its related obligations within the periods therein provided, then
such Purchaser may rescind or withdraw, in its sole discretion from time to time upon written notice to the Company, any relevant
notice, demand or election in whole or in part without prejudice to its future actions and rights; provided, however,
that in the case of a rescission of a conversion of the Preferred Stock or exercise of a Warrant, the applicable Purchaser shall
be required to return any shares of Common Stock subject to any such rescinded conversion or exercise notice concurrently with
the return to such Purchaser of the aggregate exercise price paid to the Company for such shares and the restoration of such Purchaser’s
right to acquire such shares pursuant to such Purchaser’s Warrant (including, issuance of a replacement warrant certificate
evidencing such restored right).

5.14         
Replacement of Securities. If any certificate or instrument evidencing any Securities is mutilated, lost, stolen or destroyed,
the Company shall issue or cause to be issued in exchange and substitution for and upon cancellation thereof (in the case of mutilation),
or in lieu of and substitution therefor, a new certificate or instrument, but only upon receipt of evidence reasonably satisfactory
to the Company of such loss, theft or destruction. The applicant for a new certificate or instrument under such circumstances
shall also pay any reasonable third-party costs (including customary indemnity) associated with the issuance of such replacement
Securities.

5.15         
Remedies. In addition to being entitled to exercise all rights provided herein or granted by law, including recovery of
damages, each of the Purchasers and the Company will be entitled to specific performance under the Transaction Documents. The
parties agree that monetary damages may not be adequate compensation for any loss incurred by reason of any breach of obligations
contained in the Transaction Documents and hereby agree to waive and not to assert in any Action for specific performance of any
such obligation the defense that a remedy at law would be adequate. 

5.16         
Payment Set Aside. To the extent that the Company makes a payment or payments to any Purchaser pursuant to any Transaction
Document or a Purchaser enforces or exercises its rights thereunder, and such payment or payments or the proceeds of such enforcement
or exercise or any part thereof are subsequently invalidated, declared to be fraudulent or preferential, set aside, recovered
from, disgorged by or are required to be refunded, repaid or otherwise restored to the Company, a trustee, receiver or any other
Person under any law (including, without limitation, any bankruptcy law, state or federal law, common law or equitable cause of
action), then to the extent of any such restoration the obligation or part thereof originally intended to be satisfied shall be
revived and continued in full force and effect as if such payment had not been made or such enforcement or setoff had not occurred.

5.17         
Usury. To the extent it may lawfully do so, the Company hereby agrees not to insist upon or plead or in any manner whatsoever
claim, and will resist any and all efforts to be compelled to take the benefit or advantage of, usury laws wherever enacted, now
or at any time hereafter in force, in connection with any Action or Proceeding that may be brought by any Purchaser in order to
enforce any right or remedy under any Transaction Document. Notwithstanding any provision to the contrary contained in any Transaction
Document, it is expressly agreed and provided that the total liability of the Company under the Transaction Documents for payments
in the nature of interest shall not exceed the maximum lawful rate authorized under applicable law (the “Maximum Rate”),
and, without limiting the foregoing, in no event shall any rate of interest or default interest, or both of them, when aggregated
with any other sums in the nature of interest that the Company may be obligated to pay under the Transaction Documents exceed
such Maximum Rate. It is agreed that if the maximum contract rate of interest allowed by law and applicable to the Transaction
Documents is increased or decreased by statute or any official governmental action subsequent to the date hereof, the new maximum
contract rate of interest allowed by law will be the Maximum Rate applicable to the Transaction Documents from the Closing Date
thereof forward, unless such application is precluded by applicable law. If under any circumstances whatsoever, interest in excess
of the Maximum Rate is paid by the Company to any Purchaser with respect to indebtedness evidenced by the Transaction Documents,
such excess shall be applied by such Purchaser to the unpaid principal balance of any such indebtedness or be refunded to the
Company, the manner of handling such excess to be at such Purchaser’s election.

5.18         
Independent Nature of Purchasers’ Obligations and Rights. The obligations of each Purchaser under any Transaction
Document are several and not joint with the obligations of any other Purchaser, and no Purchaser shall be responsible in any way
for the performance or non-performance of the obligations of any other Purchaser under any Transaction Document. Nothing contained
herein or in any other Transaction Document, and no action taken by any Purchaser pursuant hereto or thereto, shall be deemed
to constitute the Purchasers as a partnership, an association, a joint venture or any other kind of entity, or create a presumption
that the Purchasers are in any way acting in concert or as a group with respect to such obligations or the transactions contemplated
by the Transaction Documents. Each Purchaser shall be entitled to independently protect and enforce its rights, including, without
limitation, the rights arising out of this Agreement or out of the other Transaction Documents, and it shall not be necessary
for any other Purchaser to be joined as an additional party in any Proceeding for such purpose. Each Purchaser has been represented
by its own separate legal counsel in its review and negotiation of the Transaction Documents. For reasons of administrative convenience
only, each Purchaser and its respective counsel have chosen to communicate with the Company through EGS. EGS does not represent
any of the Purchasers and only represents Alpha. The Company has elected to provide all Purchasers with the same terms and Transaction
Documents for the convenience of the Company and not because it was required or requested to do so by any of the Purchasers. It
is expressly understood and agreed that each provision contained in this Agreement and in each other Transaction Document is between
the Company and a Purchaser, solely, and not between the Company and the Purchasers collectively and not between and among the
Purchasers.

5.19         
Liquidated Damages. The Company’s obligations to pay any partial liquidated damages or other amounts owing under
the Transaction Documents is a continuing obligation of the Company and shall not terminate until all unpaid partial liquidated
damages and other amounts have been paid notwithstanding the fact that the instrument or security pursuant to which such partial
liquidated damages or other amounts are due and payable shall have been canceled.

5.20         
Saturdays, Sundays, Holidays, etc.If the last or appointed day for the taking of any action or the expiration of any
right required or granted herein shall not be a Business Day, then such action may be taken or such right may be exercised on
the next succeeding Business Day.

5.21         
Construction. The parties agree that each of them and/or their respective counsel have reviewed and had an opportunity
to revise the Transaction Documents and, therefore, the normal rule of construction to the effect that any ambiguities are to
be resolved against the drafting party shall not be employed in the interpretation of the Transaction Documents or any amendments
thereto. In addition, each and every reference to share prices and shares of Common Stock in any Transaction Document shall be
subject to adjustment for reverse and forward stock splits, stock dividends, stock combinations and other similar transactions
of the Common Stock that occur after the date of this Agreement.

5.22         
WAIVER OF JURY TRIAL. IN ANY ACTION, SUIT, OR PROCEEDING IN ANY JURISDICTION BROUGHT BY ANY PARTY AGAINST ANY OTHER
PARTY, THE PARTIES EACH KNOWINGLY AND INTENTIONALLY, TO THE GREATEST EXTENT PERMITTED BY APPLICABLE LAW, HEREBY ABSOLUTELY, UNCONDITIONALLY,
IRREVOCABLY AND EXPRESSLY WAIVES FOREVER TRIAL BY JURY. 

 

(Signature
Pages Follow)

IN
WITNESS WHEREOF, the parties hereto have caused this Securities Purchase Agreement to be duly executed by their respective authorized
signatories as of the date first indicated above.

	generex
                                         bioTechnology corporation

         

         
	Address
    for Notice:
	By:__________________________________________

        Name:

        Title:

         

        With
        a copy to (which shall not constitute notice):
	Fax:

         

        E-mail:

	 

         

         
	 

 

[REMAINDER
OF PAGE INTENTIONALLY LEFT BLANK

SIGNATURE
PAGE FOR PURCHASER FOLLOWS]

[PURCHASER
SIGNATURE PAGES TO GNBT SECURITIES PURCHASE AGREEMENT]

 

IN
WITNESS WHEREOF, the undersigned have caused this Securities Purchase Agreement to be duly executed by their respective authorized
signatories as of the date first indicated above.

Name
of Purchaser: ________________________________________________________

Signature
of Authorized Signatory of Purchaser: __________________________________

Name
of Authorized Signatory: ____________________________________________________

Title
of Authorized Signatory: _____________________________________________________

Email
Address of Authorized Signatory: _____________________________________________

Facsimile
Number of Authorized Signatory: __________________________________________

Address
for Notice to Purchaser:

 

 

 

Address
for Delivery of Securities to Purchaser (if not same as address for notice):

 

 

 

 

Subscription
Amount: $_____________

 

Shares of
Preferred Stock: ____________

 

Warrant
Shares: _________________

 

EIN Number:
_______________________

 

 

 

[SIGNATURE
PAGES CONTINUE]NEITHER
THIS SECURITY NOR THE SECURITIES FOR WHICH THIS SECURITY IS EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE
COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT
OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE
REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN AVAILABLE EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO,
THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS AS EVIDENCED BY A
LEGAL OPINION OF COUNSEL TO THE TRANSFEROR TO SUCH EFFECT, THE SUBSTANCE OF WHICH SHALL BE REASONABLY ACCEPTABLE TO THE COMPANY.
THIS SECURITY AND THE SECURITIES ISSUABLE UPON EXERCISE OF THIS SECURITY MAY BE PLEDGED IN CONNECTION WITH A BONA FIDE MARGIN
ACCOUNT OR OTHER LOAN SECURED BY SUCH SECURITIES.

COMMON
STOCK PURCHASE WARRANT

 

generex
biotechnology corporation

Warrant
Shares: ______Initial Exercise Date: June ___, 2015

 

THIS
COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, _____________ or its assigns
(the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter
set forth, at any time on or after the date hereof (the “Initial Exercise Date”) and on or prior to the close
of business on the five year anniversary of the Initial Exercise Date (the “Termination Date”) but not thereafter,
to subscribe for and purchase from Generex Biotechnology Corporation, a Delaware corporation (the “Company”),
up to ______ shares (as subject to adjustment hereunder, the “Warrant Shares”) of Common Stock. The purchase
price of one share of Common Stock under this Warrant shall be equal to the Exercise Price, as defined in Section 2(b).

Section
1.Definitions. Capitalized terms used and not otherwise defined herein shall have the meanings set forth in that
certain Securities Purchase Agreement (the “Purchase Agreement”), dated June 24, 2015, among the Company and
the purchasers signatory thereto.

Section
2.Exercise.

a)                 
Exercise of the purchase rights represented by this Warrant may be made, in whole or in part, at any time or times on or after
the Initial Exercise Date and on or before the Termination Date by delivery to the Company (or such other office or agency of
the Company as it may designate by notice in writing to the registered Holder at the address of the Holder appearing on the books
of the Company) of a duly executed facsimile copy (or e-mail attachment) of the Notice of Exercise form annexed hereto. Within
three (3) Trading Days following the date of exercise as aforesaid, the Holder shall deliver the aggregate Exercise Price for
the shares specified in the applicable Notice of Exercise by wire transfer or cashier’s check drawn on a United States bank
unless the cashless exercise procedure specified in Section 2(c) below is specified in the applicable Notice of Exercise. No ink-original
Notice of Exercise shall be required, nor shall any medallion guarantee (or other type of guarantee or notarization) of any Notice
of Exercise form be required. Notwithstanding anything herein to the contrary, the Holder shall not be required to physically
surrender this Warrant to the Company until the Holder has purchased all of the Warrant Shares available hereunder and the Warrant
has been exercised in full, in which case, the Holder shall surrender this Warrant to the Company for cancellation within three
(3) Trading Days of the date the final Notice of Exercise is delivered to the Company. Partial exercises of this Warrant resulting
in purchases of a portion of the total number of Warrant Shares available hereunder shall have the effect of lowering the outstanding
number of Warrant Shares purchasable hereunder in an amount equal to the applicable number of Warrant Shares purchased. The Holder
and the Company shall maintain records showing the number of Warrant Shares purchased and the date of such purchases. The Company
shall deliver any objection to any Notice of Exercise within one (1) Business Day of receipt of such notice. The Holder and
any assignee, by acceptance of this Warrant, acknowledge and agree that, by reason of the provisions of this paragraph, following
the purchase of a portion of the Warrant Shares hereunder, the number of Warrant Shares available for purchase hereunder at any
given time may be less than the amount stated on the face hereof.

b)                 
Exercise Price. The exercise price per share of the Common Stock under this Warrant shall be $0.015, subject to
adjustment hereunder (the “Exercise Price”).

c)                 
Cashless Exercise. If at any time after the six month anniversary of the Initial Exercise Date, there is no effective Registration
Statement registering, or no current prospectus available for the resale of the Warrant Shares by the Holder, then this Warrant
may only be exercised, in whole or in part, at such time by means of a “cashless exercise” in which the Holder shall
be entitled to receive a number of Warrant Shares equal to the quotient obtained by dividing [(A-B) (X)] by (A), where:

(A)
= the VWAP on the Trading Day immediately preceding the date on which Holder elects to exercise this Warrant by means of a “cashless
exercise,” as set forth in the applicable Notice of Exercise;

 

(B)
= the Exercise Price of this Warrant, as adjusted hereunder; and

 

(X)
= the number of Warrant Shares that would be issuable upon exercise of this Warrant in accordance with the terms of this Warrant
if such exercise were by means of a cash exercise rather than a cashless exercise.

 

If
Warrant Shares are issued in such a cashless exercise, the parties acknowledge and agree that in accordance with Section 3(a)(9)
of the Securities Act, the Warrant Shares shall take on the characteristics of the Warrants being exercised, and the holding period
of the Warrants being exercised may be tacked on to the holding period of the Warrant Shares.  The Company agrees not
to take any position contrary to this Section 2(c).

“VWAP”
means, for any date, the price determined by the first of the following clauses that applies: (a) if the Common Stock is then
listed or quoted on a Trading Market, the daily volume weighted average price of the Common Stock for such date (or the nearest
preceding date) on the Trading Market on which the Common Stock is then listed or quoted as reported by Bloomberg L.P. (based
on a Trading Day from 9:30 a.m. (New York City time) to 4:02 p.m. (New York City time)), (b)  if OTCQB or OTCQX is not a
Trading Market, the volume weighted average price of the Common Stock for such date (or the nearest preceding date) on OTCQB or
OTCQX as applicable, (c) if the Common Stock is not then listed or quoted for trading on OTCQB or OTCQX and if prices for the
Common Stock are then reported in the “Pink Sheets” published by OTC Markets, Inc. (or a similar organization or agency
succeeding to its functions of reporting prices), the most recent bid price per share of the Common Stock so reported, or (d) in
all other cases, the fair market value of a share of Common Stock as determined by an independent appraiser selected in good faith
by the Holders of a majority in interest of the Securities then outstanding and reasonably acceptable to the Company, the fees
and expenses of which shall be paid by the Company.

Notwithstanding
anything herein to the contrary, on the Termination Date, this Warrant shall be automatically exercised via cashless exercise
pursuant to this Section 2(c).

 

d)                
Mechanics of Exercise.

                                                                                           
i.            Delivery of Warrant Shares Upon Exercise. Warrant
Shares purchased hereunder shall be transmitted by the Transfer Agent to the Holder by crediting the account of the Holder’s
or its designee’s balance account with The Depository Trust Company through its Deposit or Withdrawal at Custodian system
(“DWAC”) if the Company is then a participant in such system and either (A) there is an effective registration
statement permitting the issuance of the Warrant Shares to or resale of the Warrant Shares by the Holder or (B) this Warrant is
being exercised via cashless exercise, and otherwise by physical delivery to the address specified by the Holder in the Notice
of Exercise by the date that is three (3) Trading Days after the latest of (A) the delivery to the Company of the Notice of Exercise,
(B) surrender of this Warrant (if required) and (C) payment of the aggregate Exercise Price as set forth above (including by cashless
exercise, if permitted) (such date, the “Warrant Share Delivery Date”). The Warrant Shares shall be deemed
to have been issued, and Holder or any other person so designated to be named therein shall be deemed to have become a holder
of record of such shares for all purposes, as of the date the Warrant has been exercised, with payment to the Company of the Exercise
Price (or by cashless exercise, if permitted) and all taxes required to be paid by the Holder, if any, pursuant to Section 2(d)(vi)
prior to the issuance of such shares, having been paid.

                                                                                         
ii.            Delivery of New Warrants Upon Exercise. If this Warrant
shall have been exercised in part, the Company shall, at the request of a Holder and upon surrender of this Warrant certificate,
at the time of delivery of the Warrant Shares, deliver to the Holder a new Warrant evidencing the rights of the Holder to purchase
the unpurchased Warrant Shares called for by this Warrant, which new Warrant shall in all other respects be identical with this
Warrant.

                                                                                       
iii.            Rescission Rights. If the Company fails to cause
the Transfer Agent to transmit to the Holder the Warrant Shares pursuant to Section 2(d)(i) by the Warrant Share Delivery Date,
then the Holder will have the right to rescind such exercise.

                                                                                       
iv.            Compensation for Buy-In on Failure to Timely Deliver
Warrant Shares Upon Exercise. In addition to any other rights available to the Holder, if the Company fails to cause the Transfer
Agent to transmit to the Holder the Warrant Shares in accordance with the provision of Section 2(d)(i) above pursuant to an exercise
on or before the Warrant Share Delivery Date, and if after such date the Holder is required by its broker to purchase (in an open
market transaction or otherwise) or the Holder’s brokerage firm otherwise purchases, shares of Common Stock to deliver in
satisfaction of a sale by the Holder of the Warrant Shares which the Holder anticipated receiving upon such exercise (a “Buy-In”),
then the Company shall (A) pay in cash to the Holder the amount, if any, by which (x) the Holder’s total purchase price
(including brokerage commissions, if any) for the shares of Common Stock so purchased exceeds (y) the amount obtained by multiplying
(1) the number of Warrant Shares that the Company was required to deliver to the Holder in connection with the exercise at issue
times (2) the price at which the sell order giving rise to such purchase obligation was executed, and (B) at the option of the
Holder, either reinstate the portion of the Warrant and equivalent number of Warrant Shares for which such exercise was not honored
(in which case such exercise shall be deemed rescinded) or deliver to the Holder the number of shares of Common Stock that would
have been issued had the Company timely complied with its exercise and delivery obligations hereunder. For example, if the Holder
purchases Common Stock having a total purchase price of $11,000 to cover a Buy-In with respect to an attempted exercise of shares
of Common Stock with an aggregate sale price giving rise to such purchase obligation of $10,000, under clause (A) of the immediately
preceding sentence the Company shall be required to pay the Holder $1,000. The Holder shall provide the Company written notice
indicating the amounts payable to the Holder in respect of the Buy-In and, upon request of the Company, evidence of the amount
of such loss. Nothing herein shall limit a Holder’s right to pursue any other remedies available to it hereunder, at law
or in equity including, without limitation, a decree of specific performance and/or injunctive relief with respect to the Company’s
failure to timely deliver shares of Common Stock upon exercise of the Warrant as required pursuant to the terms hereof.

                                                                                         
v.            No Fractional Shares or Scrip. No fractional shares
or scrip representing fractional shares shall be issued upon the exercise of this Warrant. As to any fraction of a share which
the Holder would otherwise be entitled to purchase upon such exercise, the Company shall, at its election, either pay a cash adjustment
in respect of such final fraction in an amount equal to such fraction multiplied by the Exercise Price or round up to the next
whole share.

                                                                                       
vi.            Charges, Taxes and Expenses. Issuance of Warrant
Shares shall be made without charge to the Holder for any issue or transfer tax or other incidental expense in respect of the
issuance of such Warrant Shares, all of which taxes and expenses shall be paid by the Company, and such Warrant Shares shall be
issued in the name of the Holder or in such name or names as may be directed by the Holder; provided, however, that
in the event that Warrant Shares are to be issued in a name other than the name of the Holder, this Warrant when surrendered for
exercise shall be accompanied by the Assignment Form attached hereto duly executed by the Holder and the Company may require,
as a condition thereto, the payment of a sum sufficient to reimburse it for any transfer tax incidental thereto. The Company shall
pay all Transfer Agent fees required for same-day processing of any Notice of Exercise and all fees to the Depository Trust Company
(or another established clearing corporation performing similar functions) required for same-day electronic delivery of the Warrant
Shares.

                                                                                     
vii.            Closing of Books. The Company will not close its
stockholder books or records in any manner which prevents the timely exercise of this Warrant, pursuant to the terms hereof.

e)                 
Holder’s Exercise Limitations. The Company shall not effect any exercise of this Warrant, and a Holder shall not
have the right to exercise any portion of this Warrant, pursuant to Section 2 or otherwise, to the extent that after giving effect
to such issuance after exercise as set forth on the applicable Notice of Exercise, the Holder (together with the Holder’s
Affiliates, and any other Persons acting as a group together with the Holder or any of the Holder’s Affiliates), would beneficially
own in excess of the Beneficial Ownership Limitation (as defined below).  For purposes of the foregoing sentence, the number
of shares of Common Stock beneficially owned by the Holder and its Affiliates shall include the number of shares of Common Stock
issuable upon exercise of this Warrant with respect to which such determination is being made, but shall exclude the number of
shares of Common Stock which would be issuable upon (i) exercise of the remaining, nonexercised portion of this Warrant beneficially
owned by the Holder or any of its Affiliates and (ii) exercise or conversion of the unexercised or nonconverted portion of any
other securities of the Company (including, without limitation, any other Common Stock Equivalents) subject to a limitation on
conversion or exercise analogous to the limitation contained herein beneficially owned by the Holder or any of its Affiliates. 
Except as set forth in the preceding sentence, for purposes of this Section 2(e), beneficial ownership shall be calculated in
accordance with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder, it being acknowledged
by the Holder that the Company is not representing to the Holder that such calculation is in compliance with Section 13(d) of
the Exchange Act and the Holder is solely responsible for any schedules required to be filed in accordance therewith. To the extent
that the limitation contained in this Section 2(e) applies, the determination of whether this Warrant is exercisable (in relation
to other securities owned by the Holder together with any Affiliates) and of which portion of this Warrant is exercisable shall
be in the sole discretion of the Holder, and the submission of a Notice of Exercise shall be deemed to be the Holder’s determination
of whether this Warrant is exercisable (in relation to other securities owned by the Holder together with any Affiliates) and
of which portion of this Warrant is exercisable, in each case subject to the Beneficial Ownership Limitation, and the Company
shall have no obligation to verify or confirm the accuracy of such determination. In addition, a determination as to any group
status as contemplated above shall be determined in accordance with Section 13(d) of the Exchange Act and the rules and regulations
promulgated thereunder. For purposes of this Section 2(e), in determining the number of outstanding shares of Common Stock, a
Holder may rely on the number of outstanding shares of Common Stock as reflected in (A) the Company’s most recent periodic
or annual report filed with the Commission, as the case may be, (B) a more recent public announcement by the Company or (C) a
more recent written notice by the Company or the Transfer Agent setting forth the number of shares of Common Stock outstanding. 
Upon the written or oral request of a Holder, the Company shall within two Trading Days confirm orally and in writing to the Holder
the number of shares of Common Stock then outstanding.  In any case, the number of outstanding shares of Common Stock shall
be determined after giving effect to the conversion or exercise of securities of the Company, including this Warrant, by the Holder
or its Affiliates since the date as of which such number of outstanding shares of Common Stock was reported. The “Beneficial
Ownership Limitation” shall be 4.99% of the number of shares of the Common Stock outstanding immediately after giving
effect to the issuance of shares of Common Stock issuable upon exercise of this Warrant. The Holder, upon notice to the Company,
may increase or decrease the Beneficial Ownership Limitation provisions of this Section 2(e), provided that the Beneficial Ownership
Limitation in no event exceeds 9.99% of the number of shares of the Common Stock outstanding immediately after giving effect to
the issuance of shares of Common Stock upon exercise of this Warrant held by the Holder and the provisions of this Section 2(e)
shall continue to apply. Any such increase in the Beneficial Ownership Limitation will not be effective until the 61st
day after such notice is delivered to the Company. The provisions of this paragraph shall be construed and implemented in a manner
otherwise than in strict conformity with the terms of this Section 2(e) to correct this paragraph (or any portion hereof) which
may be defective or inconsistent with the intended Beneficial Ownership Limitation herein contained or to make changes or supplements
necessary or desirable to properly give effect to such limitation. The limitations contained in this paragraph shall apply to
a successor holder of this Warrant.

Section
3.Certain Adjustments.

a)                 
Stock Dividends and Splits. If the Company, at any time while this Warrant is outstanding: (i) pays a stock dividend or
otherwise makes a distribution or distributions on shares of its Common Stock or any other equity or equity equivalent securities
payable in shares of Common Stock (which, for avoidance of doubt, shall not include any shares of Common Stock issued by the Company
upon exercise of this Warrant), (ii) subdivides outstanding shares of Common Stock into a larger number of shares, (iii) combines
(including by way of reverse stock split) outstanding shares of Common Stock into a smaller number of shares, or (iv) issues by
reclassification of shares of the Common Stock any shares of capital stock of the Company, then in each case the Exercise Price
shall be multiplied by a fraction of which the numerator shall be the number of shares of Common Stock (excluding treasury shares,
if any) outstanding immediately before such event and of which the denominator shall be the number of shares of Common Stock outstanding
immediately after such event, and the number of shares issuable upon exercise of this Warrant shall be proportionately adjusted
such that the aggregate Exercise Price of this Warrant shall remain unchanged. Any adjustment made pursuant to this Section 3(a)
shall become effective immediately after the record date for the determination of stockholders entitled to receive such dividend
or distribution and shall become effective immediately after the effective date in the case of a subdivision, combination or re-classification.

b)                 
Subsequent Equity Sales. If the Company or any Subsidiary thereof, as applicable, at any time while this Warrant is outstanding,
shall sell or grant any option to purchase, or sell or grant any right to reprice, or otherwise dispose of or issue (or announce
any offer, sale, grant or any option to purchase or other disposition) any Common Stock or Common Stock Equivalents, at an effective
price per share less than the Exercise Price then in effect (such lower price, the “Base Share Price” and such
issuances collectively, a “Dilutive Issuance”) (it being understood and agreed that if the holder of the Common
Stock or Common Stock Equivalents so issued shall at any time, whether by operation of purchase price adjustments, reset provisions,
floating conversion, exercise or exchange prices or otherwise, or due to warrants, options or rights per share which are issued
in connection with such issuance, be entitled to receive shares of Common Stock at an effective price per share that is less than
the Exercise Price, such issuance shall be deemed to have occurred for less than the Exercise Price on such date of the Dilutive
Issuance at such effective price), then simultaneously with the consummation of each Dilutive Issuance the Exercise Price shall
be reduced and only reduced to equal the Base Share Price and the number of Warrant Shares issuable hereunder shall be increased
such that the aggregate Exercise Price payable hereunder, after taking into account the decrease in the Exercise Price, shall
be equal to the aggregate Exercise Price prior to such adjustment. Such adjustment shall be made whenever such Common Stock or
Common Stock Equivalents are issued. Notwithstanding the foregoing, no adjustments shall be made, paid or issued under this Section
3(b) in respect of an Exempt Issuance. The Company shall notify the Holder, in writing, no later than the Trading Day following
the issuance or deemed issuance of any Common Stock or Common Stock Equivalents subject to this Section 3(b), indicating therein
the applicable issuance price, or applicable reset price, exchange price, conversion price and other pricing terms (such notice,
the “Dilutive Issuance Notice”). For purposes of clarification, whether or not the Company provides a Dilutive
Issuance Notice pursuant to this Section 3(b), upon the occurrence of any Dilutive Issuance, the Holder is entitled to receive
a number of Warrant Shares based upon the Base Share Price regardless of whether the Holder accurately refers to the Base Share
Price in the Notice of Exercise. If the Company enters into a Variable Rate Transaction, despite the prohibition thereon in the
Purchase Agreement, the Company shall be deemed to have issued Common Stock or Common Stock Equivalents at the lowest possible
conversion or exercise price at which such securities may be converted or exercised. Notwithstanding the foregoing, the issuance
of any Common Stock or Common Stock Equivalents pursuant to the Purchase Agreement shall not be deemed a Dilutive Issuance.

c)                 
Subsequent Rights Offerings. In addition to any adjustments pursuant to Section 3(a) above, if at any time the Company
grants, issues or sells any Common Stock Equivalents or rights to purchase stock, warrants, securities or other property pro rata
to the record holders of any class of shares of Common Stock (the “Purchase Rights”), then the Holder will
be entitled to acquire, upon the terms applicable to such Purchase Rights, the aggregate Purchase Rights which the Holder could
have acquired if the Holder had held the number of shares of Common Stock acquirable upon complete exercise of this Warrant (without
regard to any limitations on exercise hereof, including without limitation, the Beneficial Ownership Limitation) immediately before
the date on which a record is taken for the grant, issuance or sale of such Purchase Rights, or, if no such record is taken, the
date as of which the record holders of shares of Common Stock are to be determined for the grant, issue or sale of such Purchase
Rights (provided, however, to the extent that the Holder’s right to participate in any such Purchase Right would result
in the Holder exceeding the Beneficial Ownership Limitation, then the Holder shall not be entitled to participate in such Purchase
Right to such extent (or beneficial ownership of such shares of Common Stock as a result of such Purchase Right to such extent)
and such Purchase Right to such extent shall be held in abeyance for the Holder until such time, if ever, as its right thereto
would not result in the Holder exceeding the Beneficial Ownership Limitation).

d)                
Pro Rata Distributions. During such time as this Warrant is outstanding, if the Company shall declare or make any dividend
or other distribution of its assets (or rights to acquire its assets) to holders of shares of Common Stock, by way of return of
capital or otherwise (including, without limitation, any distribution of cash, stock or other securities, property or options
by way of a dividend, spin off, reclassification, corporate rearrangement, scheme of arrangement or other similar transaction)
(a “Distribution”), at any time after the issuance of this Warrant, then, in each such case, the Holder shall
be entitled to participate in such Distribution to the same extent that the Holder would have participated therein if the Holder
had held the number of shares of Common Stock acquirable upon complete exercise of this Warrant (without regard to any limitations
on exercise hereof, including without limitation, the Beneficial Ownership Limitation) immediately before the date of which a
record is taken for such Distribution, or, if no such record is taken, the date as of which the record holders of shares of Common
Stock are to be determined for the participation in such Distribution (provided, however, to the extent that the
Holder's right to participate in any such Distribution would result in the Holder exceeding the Beneficial Ownership Limitation,
then the Holder shall not be entitled to participate in such Distribution to such extent (or in the beneficial ownership of any
shares of Common Stock as a result of such Distribution to such extent) and the portion of such Distribution shall be held in
abeyance for the benefit of the Holder until such time, if ever, as its right thereto would not result in the Holder exceeding
the Beneficial Ownership Limitation).

e)                 
Fundamental Transaction. If, at any time while this Warrant is outstanding, (i) the Company, directly or indirectly, in
one or more related transactions effects any merger or consolidation of the Company with or into another Person, (ii) the Company,
directly or indirectly, effects any sale, lease, license, assignment, transfer, conveyance or other disposition of all or substantially
all of its assets in one or a series of related transactions, (iii) any, direct or indirect, purchase offer, tender offer or exchange
offer (whether by the Company or another Person) is completed pursuant to which holders of Common Stock are permitted to sell,
tender or exchange their shares for other securities, cash or property and has been accepted by the holders of 50% or more of
the outstanding Common Stock, (iv) the Company, directly or indirectly, in one or more related transactions effects any reclassification,
reorganization or recapitalization of the Common Stock or any compulsory share exchange pursuant to which the Common Stock is
effectively converted into or exchanged for other securities, cash or property, or (v) the Company, directly or indirectly, in
one or more related transactions consummates a stock or share purchase agreement or other business combination (including, without
limitation, a reorganization, recapitalization, spin-off or scheme of arrangement) with another Person or group of Persons whereby
such other Person or group acquires more than 50% of the outstanding shares of Common Stock (not including any shares of Common
Stock held by the other Person or other Persons making or party to, or associated or affiliated with the other Persons making
or party to, such stock or share purchase agreement or other business combination) (each a “Fundamental Transaction”),
then, upon any subsequent exercise of this Warrant, the Holder shall have the right to receive, for each Warrant Share that would
have been issuable upon such exercise immediately prior to the occurrence of such Fundamental Transaction, at the option of the
Holder (without regard to any limitation in Section 2(e) on the exercise of this Warrant), the number of shares of Common Stock
of the successor or acquiring corporation or of the Company, if it is the surviving corporation, and any additional consideration
(the “Alternate Consideration”) receivable as a result of such Fundamental Transaction by a holder of the number
of shares of Common Stock for which this Warrant is exercisable immediately prior to such Fundamental Transaction (without regard
to any limitation in Section 2(e) on the exercise of this Warrant). For purposes of any such exercise, the determination of the
Exercise Price shall be appropriately adjusted to apply to such Alternate Consideration based on the amount of Alternate Consideration
issuable in respect of one share of Common Stock in such Fundamental Transaction, and the Company shall apportion the Exercise
Price among the Alternate Consideration in a reasonable manner reflecting the relative value of any different components of the
Alternate Consideration. If holders of Common Stock are given any choice as to the securities, cash or property to be received
in a Fundamental Transaction, then the Holder shall be given the same choice as to the Alternate Consideration it receives upon
any exercise of this Warrant following such Fundamental Transaction. Notwithstanding anything to the contrary, in the event of
a Fundamental Transaction that is (1) an all cash transaction, (2) a “Rule 13e-3 transaction” as defined in Rule 13e-3
under the Exchange Act, or (3) a Fundamental Transaction involving a person or entity not traded on a national securities exchange,
including, but not limited to, the Nasdaq Global Select Market, the Nasdaq Global Market, or the Nasdaq Capital Market, the Company
or any Successor Entity (as defined below) shall, at the Holder’s option, exercisable at any time concurrently with, or
within 30 days after, the consummation of the Fundamental Transaction, purchase this Warrant from the Holder by paying to the
Holder an amount of cash equal to the Black Scholes Value of the remaining unexercised portion of this Warrant on the date of
the consummation of such Fundamental Transaction. “Black Scholes Value” means the value of this Warrant based
on the Black and Scholes Option Pricing Model obtained from the “OV” function on Bloomberg, L.P. (“Bloomberg”)
determined as of the day of consummation of the applicable Fundamental Transaction for pricing purposes and reflecting (A) a risk-free
interest rate corresponding to the U.S. Treasury rate for a period equal to the time between the date of the public announcement
of the applicable Fundamental Transaction and the Termination Date, (B) an expected volatility equal to the greater of 100% and
the 100 day volatility obtained from the HVT function on Bloomberg as of the Trading Day immediately following the public announcement
of the applicable Fundamental Transaction, (C) the underlying price per share used in such calculation shall be the sum of the
price per share being offered in cash, if any, plus the value of any non-cash consideration, if any, being offered in such Fundamental
Transaction and (D) a remaining option time equal to the time between the date of the public announcement of the applicable Fundamental
Transaction and the Termination Date. The Company shall cause any successor entity in a Fundamental Transaction in which the Company
is not the survivor (the “Successor Entity”) to assume in writing all of the obligations of the Company under
this Warrant and the other Transaction Documents in accordance with the provisions of this Section 3(e) pursuant to written agreements
in form and substance reasonably satisfactory to the Holder and approved by the Holder (without unreasonable delay) prior to such
Fundamental Transaction and shall, at the option of the Holder, deliver to the Holder in exchange for this Warrant a security
of the Successor Entity evidenced by a written instrument substantially similar in form and substance to this Warrant which is
exercisable for a corresponding number of shares of capital stock of such Successor Entity (or its parent entity) equivalent to
the shares of Common Stock acquirable and receivable upon exercise of this Warrant (without regard to any limitations on the exercise
of this Warrant) prior to such Fundamental Transaction, and with an exercise price which applies the exercise price hereunder
to such shares of capital stock (but taking into account the relative value of the shares of Common Stock pursuant to such Fundamental
Transaction and the value of such shares of capital stock, such number of shares of capital stock and such exercise price being
for the purpose of protecting the economic value of this Warrant immediately prior to the consummation of such Fundamental Transaction),
and which is reasonably satisfactory in form and substance to the Holder. Upon the occurrence of any such Fundamental Transaction,
the Successor Entity shall succeed to, and be substituted for (so that from and after the date of such Fundamental Transaction,
the provisions of this Warrant and the other Transaction Documents referring to the “Company” shall refer instead
to the Successor Entity), and may exercise every right and power of the Company and shall assume all of the obligations of the
Company under this Warrant and the other Transaction Documents with the same effect as if such Successor Entity had been named
as the Company herein.

f)                  
Calculations. All calculations under this Section 3 shall be made to the nearest cent or the nearest 1/100th of a share,
as the case may be. For purposes of this Section 3, the number of shares of Common Stock deemed to be issued and outstanding as
of a given date shall be the sum of the number of shares of Common Stock (excluding treasury shares, if any) issued and outstanding.

g)                 
Notice to Holder.

                                                                                           
i.            Adjustment to Exercise Price. Whenever the Exercise
Price is adjusted pursuant to any provision of this Section 3, the Company shall promptly mail to the Holder a notice setting
forth the Exercise Price after such adjustment and any resulting adjustment to the number of Warrant Shares and setting forth
a brief statement of the facts requiring such adjustment.

                                                                                         
  ii.            Notice to Allow Exercise by Holder. If (A) the Company
shall declare a dividend (or any other distribution in whatever form) on the Common Stock, (B) the Company shall declare a special
nonrecurring cash dividend on or a redemption of the Common Stock, (C) the Company shall authorize the granting to all holders
of the Common Stock rights or warrants to subscribe for or purchase any shares of capital stock of any class or of any rights,
(D) the approval of any stockholders of the Company shall be required in connection with any reclassification of the Common Stock,
any consolidation or merger to which the Company is a party, any sale or transfer of all or substantially all of the assets of
the Company, or any compulsory share exchange whereby the Common Stock is converted into other securities, cash or property, or
(E) the Company shall authorize the voluntary or involuntary dissolution, liquidation or winding up of the affairs of the Company,
then, in each case, the Company shall cause to be mailed to the Holder at its last address as it shall appear upon the Warrant
Register of the Company, at least 20 calendar days prior to the applicable record or effective date hereinafter specified, a notice
stating (x) the date on which a record is to be taken for the purpose of such dividend, distribution, redemption, rights or warrants,
or if a record is not to be taken, the date as of which the holders of the Common Stock of record to be entitled to such dividend,
distributions, redemption, rights or warrants are to be determined or (y) the date on which such reclassification, consolidation,
merger, sale, transfer or share exchange is expected to become effective or close, and the date as of which it is expected that
holders of the Common Stock of record shall be entitled to exchange their shares of the Common Stock for securities, cash or other
property deliverable upon such reclassification, consolidation, merger, sale, transfer or share exchange; provided that the failure
to mail such notice or any defect therein or in the mailing thereof shall not affect the validity of the corporate action required
to be specified in such notice. To the extent that any notice provided hereunder constitutes, or contains, material, non-public
information regarding the Company or any of the Subsidiaries, the Company shall simultaneously file such notice with the Commission
pursuant to a Current Report on Form 8-K. The Holder shall remain entitled to exercise this Warrant during the period commencing
on the date of such notice to the effective date of the event triggering such notice except as may otherwise be expressly set
forth herein.

Section
4.Transfer of Warrant.

a)                 
Transferability. This Warrant and all rights hereunder (including, without limitation, any registration rights) are transferable,
in whole or in part, upon surrender of this Warrant at the principal office of the Company or its designated agent, together with
a written assignment of this Warrant substantially in the form attached hereto duly executed by the Holder or its agent or attorney
and funds sufficient to pay any transfer taxes payable upon the making of such transfer. Upon such surrender and, if required,
such payment, the Company shall execute and deliver a new Warrant or Warrants in the name of the assignee or assignees, as applicable,
and in the denomination or denominations specified in such instrument of assignment, and shall issue to the assignor a new Warrant
evidencing the portion of this Warrant not so assigned, and this Warrant shall promptly be cancelled. Notwithstanding anything
herein to the contrary, the Holder shall not be required to physically surrender this Warrant to the Company unless the Holder
has assigned this Warrant in full, in which case, the Holder shall surrender this Warrant to the Company within three (3) Trading
Days of the date the Holder delivers an assignment form to the Company assigning this Warrant full. The Warrant, if properly assigned
in accordance herewith, may be exercised by a new holder for the purchase of Warrant Shares without having a new Warrant issued.

b)                 
New Warrants. This Warrant may be divided or combined with other Warrants upon presentation hereof at the aforesaid office
of the Company, together with a written notice specifying the names and denominations in which new Warrants are to be issued,
signed by the Holder or its agent or attorney. Subject to compliance with Section 4(a), as to any transfer which may be involved
in such division or combination, the Company shall execute and deliver a new Warrant or Warrants in exchange for the Warrant or
Warrants to be divided or combined in accordance with such notice. All Warrants issued on transfers or exchanges shall be dated
the initial issuance date of this Warrant and shall be identical with this Warrant except as to the number of Warrant Shares issuable
pursuant thereto.

c)                 
Warrant Register. The Company shall register this Warrant, upon records to be maintained by the Company for that purpose
(the “Warrant Register”), in the name of the record Holder hereof from time to time. The Company may deem and
treat the registered Holder of this Warrant as the absolute owner hereof for the purpose of any exercise hereof or any distribution
to the Holder, and for all other purposes, absent actual notice to the contrary.

Section
5.Miscellaneous.

a)                 
No Rights as Stockholder Until Exercise. This Warrant does not entitle the Holder to any voting rights, dividends or other
rights as a stockholder of the Company prior to the exercise hereof as set forth in Section 2(d)(i).

b)                 
Loss, Theft, Destruction or Mutilation of Warrant. The Company covenants that upon receipt by the Company of evidence reasonably
satisfactory to it of the loss, theft, destruction or mutilation of this Warrant or any stock certificate relating to the Warrant
Shares, and in case of loss, theft or destruction, of indemnity or security reasonably satisfactory to it (which, in the case
of the Warrant, shall not include the posting of any bond), and upon surrender and cancellation of such Warrant or stock certificate,
if mutilated, the Company will make and deliver a new Warrant or stock certificate of like tenor and dated as of such cancellation,
in lieu of such Warrant or stock certificate.

c)                 
Saturdays, Sundays, Holidays, etc. If the last or appointed day for the taking of any action or the expiration of any right
required or granted herein shall not be a Business Day, then, such action may be taken or such right may be exercised on the next
succeeding Business Day.

d)                
Authorized Shares.

The
Company covenants that, during the period the Warrant is outstanding, it will reserve from its authorized and unissued Common
Stock a sufficient number of shares to provide for the issuance of the Warrant Shares upon the exercise of any purchase rights
under this Warrant. The Company further covenants that its issuance of this Warrant shall constitute full authority to its officers
who are charged with the duty of issuing the necessary Warrant Shares upon the exercise of the purchase rights under this Warrant.
The Company will take all such reasonable action as may be necessary to assure that such Warrant Shares may be issued as provided
herein without violation of any applicable law or regulation, or of any requirements of the Trading Market upon which the Common
Stock may be listed. The Company covenants that all Warrant Shares which may be issued upon the exercise of the purchase rights
represented by this Warrant will, upon exercise of the purchase rights represented by this Warrant and payment for such Warrant
Shares in accordance herewith, be duly authorized, validly issued, fully paid and nonassessable and free from all taxes, liens
and charges created by the Company in respect of the issue thereof (other than taxes in respect of any transfer occurring contemporaneously
with such issue).

Except
and to the extent as waived or consented to by the Holder, the Company shall not by any action, including, without limitation,
amending its certificate of incorporation or through any reorganization, transfer of assets, consolidation, merger, dissolution,
issue or sale of securities or any other voluntary action, avoid or seek to avoid the observance or performance of any of the
terms of this Warrant, but will at all times in good faith assist in the carrying out of all such terms and in the taking of all
such actions as may be necessary or appropriate to protect the rights of Holder as set forth in this Warrant against impairment.
Without limiting the generality of the foregoing, the Company will (i) not increase the par value of any Warrant Shares above
the amount payable therefor upon such exercise immediately prior to such increase in par value, (ii) take all such action as may
be necessary or appropriate in order that the Company may validly and legally issue fully paid and nonassessable Warrant Shares
upon the exercise of this Warrant and (iii) use commercially reasonable efforts to obtain all such authorizations, exemptions
or consents from any public regulatory body having jurisdiction thereof, as may be, necessary to enable the Company to perform
its obligations under this Warrant.

Before
taking any action which would result in an adjustment in the number of Warrant Shares for which this Warrant is exercisable or
in the Exercise Price, the Company shall obtain all such authorizations or exemptions thereof, or consents thereto, as may be
necessary from any public regulatory body or bodies having jurisdiction thereof.

e)                 
Jurisdiction. All questions concerning the construction, validity, enforcement and interpretation of this Warrant shall
be determined in accordance with the provisions of the Purchase Agreement.

f)                  
Restrictions. The Holder acknowledges that the Warrant Shares acquired upon the exercise of this Warrant, if not registered,
and the Holder does not utilize cashless exercise, will have restrictions upon resale imposed by state and federal securities
laws.

g)                 
Nonwaiver and Expenses. No course of dealing or any delay or failure to exercise any right hereunder on the part of Holder
shall operate as a waiver of such right or otherwise prejudice the Holder’s rights, powers or remedies. Without limiting
any other provision of this Warrant or the Purchase Agreement, if the Company willfully and knowingly fails to comply with any
provision of this Warrant, which results in any material damages to the Holder, the Company shall pay to the Holder such amounts
as shall be sufficient to cover any costs and expenses including, but not limited to, reasonable attorneys’ fees, including
those of appellate proceedings, incurred by the Holder in collecting any amounts due pursuant hereto or in otherwise enforcing
any of its rights, powers or remedies hereunder.

h)                 
Notices. Any notice, request or other document required or permitted to be given or delivered to the Holder by the Company
shall be delivered in accordance with the notice provisions of the Purchase Agreement.

i)                   
Limitation of Liability. No provision hereof, in the absence of any affirmative action by the Holder to exercise this Warrant
to purchase Warrant Shares, and no enumeration herein of the rights or privileges of the Holder, shall give rise to any liability
of the Holder for the purchase price of any Common Stock or as a stockholder of the Company, whether such liability is asserted
by the Company or by creditors of the Company.

j)                   
Remedies. The Holder, in addition to being entitled to exercise all rights granted by law, including recovery of damages,
will be entitled to specific performance of its rights under this Warrant. The Company agrees that monetary damages would not
be adequate compensation for any loss incurred by reason of a breach by it of the provisions of this Warrant and hereby agrees
to waive and not to assert the defense in any action for specific performance that a remedy at law would be adequate.

k)                 
Successors and Assigns. Subject to applicable securities laws, this Warrant and the rights and obligations evidenced hereby
shall inure to the benefit of and be binding upon the successors and permitted assigns of the Company and the successors and permitted
assigns of Holder. The provisions of this Warrant are intended to be for the benefit of any Holder from time to time of this Warrant
and shall be enforceable by the Holder or holder of Warrant Shares.

l)                   
Amendment. This Warrant may be modified or amended or the provisions hereof waived with the written consent of the Company
and the Holder.

m)               
Severability. Wherever possible, each provision of this Warrant shall be interpreted in such manner as to be effective
and valid under applicable law, but if any provision of this Warrant shall be prohibited by or invalid under applicable law, such
provision shall be ineffective to the extent of such prohibition or invalidity, without invalidating the remainder of such provisions
or the remaining provisions of this Warrant.

n)                 
Headings. The headings used in this Warrant are for the convenience of reference only and shall not, for any purpose, be
deemed a part of this Warrant.

 

********************

 

(Signature
Page Follows)

 

IN
WITNESS WHEREOF, the Company has caused this Warrant to be executed by its officer thereunto duly authorized as of the date first
above indicated.

 

	 	 	GENEREX BIOTECHNOLOGY CORPORATION
	 	 	 
	 	 	By:
	 	 	Name: Mark A. Fletcher
	 	 	Title: CEO

 

    	 

    	 

    

NOTICE
OF EXERCISE

 

To:generex
biotechnology corporation

 

(1)  
The undersigned hereby elects to purchase ________ Warrant Shares of the Company pursuant to the terms of the attached Warrant
(only if exercised in full), and tenders herewith payment of the exercise price in full, together with all applicable transfer
taxes, if any.

(2)  
Payment shall take the form of (check applicable box):

[
] in lawful money of the United States; or

[
] the cancellation of such number of Warrant Shares as is necessary, in accordance with the formula set forth in subsection 2(c),
to exercise this Warrant with respect to the maximum number of Warrant Shares purchasable pursuant to the cashless exercise procedure
set forth in subsection 2(c).

(3)  
Please issue the said Warrant Shares in the name of the undersigned or in such other name as is specified below:

_______________________________

 

 

The
Warrant Shares shall be delivered to the following DWAC Account Number or by physical delivery of a certificate to:

 

_______________________________

 

_______________________________

 

_______________________________

 

 

[SIGNATURE
OF HOLDER]

 

Name
of Investing Entity: ________________________________________________________________________

Signature
of Authorized Signatory of Investing Entity: _________________________________________________

Name
of Authorized Signatory: ___________________________________________________________________

Title
of Authorized Signatory: ____________________________________________________________________

Date:
________________________________________________________________________________________

 

 

 

ASSIGNMENT
FORM

 

(To
assign the foregoing warrant, execute

this form and supply required information.

Do not use this form to exercise the warrant.)

 

 

 

FOR
VALUE RECEIVED, [____] all of or [_______] shares of the foregoing Warrant and all rights evidenced thereby are hereby assigned
to

 

_______________________________________________
whose address is

 

_______________________________________________________________.

 

 

 

_______________________________________________________________

 

Dated:
______________, _______

 

 

Holder’s
Signature:_____________________________

 

Holder’s
Address:_____________________________

 

_____________________________

 

 

 

Signature
Guaranteed: ___________________________________________

 

 

NOTE:
The signature to this Assignment Form must correspond with the name as it appears on the face of the Warrant, without alteration
or enlargement or any change whatsoever, and must be guaranteed by a bank or trust company. Officers of corporations and those
acting in a fiduciary or other representative capacity should file proper evidence of authority to assign the foregoing Warrant.

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