Exhibit 10.1


 


SECURITIES
PURCHASE AGREEMENT


 


This Securities Purchase
Agreement (this “Agreement”) is dated as of December 6, 2019, between Onconova Therapeutics, Inc., 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 an effective registration statement under the Securities Act
of 1933, as amended (the “Securities Act”), 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, for all purposes of this Agreement, 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 4.5.


 


“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.


 


“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.


 


“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 second (2nd) Trading Day following the date hereof.


 









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


 


“Common
Stock” means the common stock of the Company, par value $0.01 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 Morgan, Lewis & Bockius LLP, with offices located at 1701 Market Street, Philadelphia, PA 19103.


 


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


 


“Disclosure
Time” means, (i) if this Agreement is signed on a day that is not a Trading Day or after 9:00 a.m. (New York City time)
and before midnight (New York City time) on any Trading Day, 9:01 a.m. (New York City time) on the Trading Day immediately following
the date hereof, unless otherwise instructed as to an earlier time by the Placement Agent, and (ii) if this Agreement is signed
between midnight (New York City time) and 9:00 a.m. (New York City time) on any Trading Day, no later than 9:01 a.m. (New York
City time) on the date hereof, unless otherwise instructed as to an earlier time by the Placement Agent.


 


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


 


“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 (other than in connection with stock splits or combinations) or to extend the term 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 such securities are issued as “restricted securities” (as defined in Rule
144) and carry no registration rights that require or permit the filing of any registration statement in connection therewith
during the prohibition period in Section 4.12(a) herein, and 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.


 






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


 


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


 


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


 


“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(p).


 


“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(n).


 


“Per
Share Purchase Price” equals $0.349, 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.


 


“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(hh).


 


“Placement
Agent” means H.C. Wainwright & Co., LLC.


 


“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.


 


“Prospectus” means the
final base prospectus filed for the Registration Statement.


 









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“Prospectus
Supplement” means the supplement to the Prospectus complying with Rule 424(b) of the Securities Act that is filed with
the Commission and delivered by the Company to each Purchaser at the Closing.


 


“Purchaser
Party” shall have the meaning ascribed to such term in Section 4.8.


 


“Registration
Statement” means the effective registration statement with Commission file No. 333-221684 which registers the sale of
the Shares, the Warrants and the Warrant Shares to the Purchasers, including all information, documents and exhibits filed with
or incorporated by reference into such registration statement.


 


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


 


“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 Shares, the Warrants and the Warrant Shares.


 


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


 


“Shares”
means the shares of Common Stock issued or issuable to each Purchaser pursuant to this Agreement.


 


“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 locating and/or borrowing shares of Common Stock). 


 


“Subscription
Amount” means, as to each Purchaser, the aggregate amount to be paid for the Shares 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.


 


“Subsidiary”
means any subsidiary of the Company as set forth in the SEC Reports, and shall, where applicable, also include any direct or indirect
subsidiary of the Company formed or acquired after the date hereof.


 









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“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 American, the Nasdaq Capital Market, the Nasdaq Global Market, the Nasdaq Global Select Market,
the New York Stock Exchange or OTC Market (or any successors to any of the foregoing).


 


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


 


“Transfer
Agent” means EQ Shareowner Services, the current transfer agent of the Company, with a mailing address of P.O. Box 64945,
St. Paul, MN 55164-0945 and any successor transfer agent of the Company.


 


“Variable
Rate Transaction” shall have the meaning ascribed to such term in Section 4.12(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 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 Group, 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 upon issuance and have a term of exercise equal to five (5) years, in the
form of Exhibit A attached hereto.


 


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


 






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ARTICLE II.





PURCHASE AND SALE


 


2.1            Closing.
On the Closing Date, upon the terms and subject to the conditions set forth herein, the Company agrees to sell, and the Purchasers,
severally and not jointly, agree to purchase, up to an aggregate of approximately $5.0 million of Shares and Warrants. Each Purchaser’s
Subscription Amount as set forth on the signature page hereto executed by such Purchaser shall be made available for “Delivery
Versus Payment” settlement with the Company or its designees. The Company shall deliver to each Purchaser its respective
Shares and a Warrant 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 the Placement Agent or such other location as the parties shall mutually agree.
Unless otherwise directed by the Placement Agent, settlement of the Shares shall occur via “Delivery Versus Payment”
(“DVP”) (i.e., on the Closing Date, the Company shall issue the Shares registered in the Purchasers’
names and addresses and released by the Transfer Agent directly to the account(s) at the Placement Agent identified by each Purchaser;
upon receipt of such Shares, the Placement Agent shall promptly electronically deliver such Shares to the applicable Purchaser,
and payment therefor shall be made by the Placement Agent (or its clearing firm) by wire transfer to the Company).


 


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, in a form reasonably acceptable to the Placement Agent and Purchasers;


 


(iii)           
the Company shall have provided each Purchaser with the Company’s wire instructions, on Company letterhead and executed
by the Chief Executive Officer or Chief Financial Officer of the Company;


 


(iv)            
subject to the last sentence of Section 2.1, a copy of the irrevocable instructions to the Transfer Agent instructing the
Transfer Agent to deliver on an expedited basis via The Depository Trust Company Deposit or Withdrawal at Custodian system (“DWAC”)
Shares equal to such Purchaser’s Subscription Amount divided by the Per Share Purchase Price, registered in the name of such
Purchaser;


 


(v)              
a Warrant registered in the name of such Purchaser to purchase up to a number of shares of Common Stock equal to 50% of
such Purchaser’s Shares, with an exercise price equal to $0.287, subject to adjustment therein; and


 


(vi)            
the Prospectus and Prospectus Supplement (which may be delivered in accordance with Rule 172 under the Securities Act).


 









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(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; and


 


(ii)             
such Purchaser’s Subscription Amount, which shall be made available for “Delivery Versus Payment” settlement
with the Company or its designees.


 


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 (or, to the extent representations or warranties are qualified by materiality or Material
Adverse Effect, in all respects) when made and 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 (or, to the extent representations or warranties are qualified by materiality or Material
Adverse Effect, in all 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 in which case they shall be accurate as of such date);


 


(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.


 






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ARTICLE III.


REPRESENTATIONS
AND WARRANTIES


 


3.1             
Representations and Warranties of the Company. Except as set forth in 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 in the SEC Reports. 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 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.


 









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(c)              
Authorization; Enforcement. 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 to which it is a party, the issuance and sale of the Securities and the consummation by it of the transactions contemplated
hereby and thereby 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, or (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,
anti-dilution or similar adjustments, 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 4.4 of this Agreement, (ii) the filing with the Commission of the
Prospectus Supplement, (iii) application(s) to each applicable Trading Market for the listing of the Shares and Warrant
Shares for trading thereon in the time and manner required thereby, and (iv) such filings as are required to be made under
applicable state securities laws (collectively, the “Required Approvals”).


 






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(f)               
Issuance of the Securities; Registration. 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 Warrant Shares, when issued in accordance with the terms of the Warrants, will be validly issued,
fully paid and nonassessable, free and clear of all Liens imposed by the Company. The Company has reserved from its duly authorized
capital stock the maximum number of shares of Common Stock issuable pursuant to this Agreement and the Warrants. The Company has
prepared and filed the Registration Statement in conformity with the requirements of the Securities Act, which became effective
on December 28, 2017 (the “Effective Date”), including the Prospectus, and such amendments and supplements
thereto as may have been required to the date of this Agreement. The Company was at the time of the filing of the Registration
Statement eligible to use Form S-3. The Company is eligible to use Form S-3 under the Securities Act and it meets the requirements
as set forth in General Instruction I.B.1 of Form S-3. The Registration Statement is effective under the Securities Act and no
stop order preventing or suspending the effectiveness of the Registration Statement or suspending or preventing the use of the
Prospectus has been issued by the Commission and no proceedings for that purpose have been instituted or, to the knowledge of the
Company, are threatened by the Commission. The Company, if required by the rules and regulations of the Commission, shall file
the Prospectus Supplement with the Commission pursuant to Rule 424(b). At the time the Registration Statement and any amendments
thereto became effective, at the date of this Agreement and at the Closing Date, the Registration Statement and any amendments
thereto conformed and will conform in all material respects to the requirements of the Securities Act and did not and will not
contain any untrue statement of a material fact or omit to state any material fact required to be stated therein or necessary to
make the statements therein not misleading; and the Prospectus and any amendments or supplements thereto, at the time the Prospectus
or any amendment or supplement thereto was issued and at the Closing Date, conformed and will conform in all material respects
to the requirements of the Securities Act and did not and will not contain an untrue statement of a material fact or omit to state
a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made,
not misleading.


 






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(g)               Capitalization.
The capitalization of the Company as of the date hereof is as set forth on Schedule 3.1(g). 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). There are no outstanding securities or instruments of the Company or any Subsidiary with any provision that
adjusts the exercise, conversion, exchange or reset price of such security or instrument upon an issuance of securities by
the Company or any Subsidiary. 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 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, together with the Prospectus and the Prospectus Supplement, 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 Company has never been an issuer subject to Rule 144(i) under the Securities Act.
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.


 






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(i)                
Material Changes; Undisclosed Events, Liabilities or Developments. Since the date of the latest audited financial
statements included within the SEC Reports, except as set forth on Schedule 3.1(i), (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 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 in the SEC Reports, 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, prospects, 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. 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. 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.


 









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(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)             Environmental
Laws.The Company and its Subsidiaries (i) are in compliance with all federal, state, local and foreign laws relating
to pollution or protection of human health or the environment (including ambient air, surface water, groundwater, land
surface or subsurface strata), including laws relating to emissions, discharges, releases or threatened releases of
chemicals, pollutants, contaminants, or toxic or hazardous substances or wastes (collectively, “Hazardous
Materials”) into the environment, or otherwise relating to the manufacture, processing, distribution, use,
treatment, storage, disposal, transport or handling of Hazardous Materials, as well as all authorizations, codes, decrees,
demands, or demand letters, injunctions, judgments, licenses, notices or notice letters, orders, permits, plans or
regulations, issued, entered, promulgated or approved thereunder (“Environmental Laws”); (ii) have
received all permits licenses or other approvals required of them under applicable Environmental Laws to conduct their
respective businesses; and (iii) are in compliance with all terms and conditions of any such permit, license or approval
where in each clause (i), (ii) and (iii), the failure to so comply could be reasonably expected to have, individually or in
the aggregate, a Material Adverse Effect.


 






    13


     


    

 


(n)              
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.


 


(o)              
Title to Assets. 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 therefor 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.


 


(p)              
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 necessary or required for use in connection with their respective businesses as described in
the SEC Reports 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. The Company has no knowledge of any facts that would preclude it from having valid license rights or
clear title to the Intellectual Property Rights. The Company has no knowledge that it lacks or will be unable to obtain any rights
or licenses to use all Intellectual Property Rights that are necessary to conduct its business.


 









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(q)              
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.


 


(r)               
Transactions With Affiliates and Employees. Except as set forth on Schedule 3.1(r), 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.


 


(s)                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.


 






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(t)                
Certain Fees. Except as set forth in the Prospectus Supplement, 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.


 


(u)              
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.


 


(v)              
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.


 


(w)            
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. Except as disclosed in the SEC Reports, 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 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 to the Depository Trust Company (or such other established clearing corporation) in connection
with such electronic transfer.


 


(x)               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.


 






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(y)              
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
which is not otherwise disclosed in the Prospectus Supplement. 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, 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 the
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 the 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.


 


(z)              
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 any applicable shareholder approval
provisions of any Trading Market on which any of the securities of the Company are listed or designated.


 


(aa)            Solvency.
Based on the consolidated financial condition of the Company as of the Closing Date, 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. The SEC Reports set 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 $50,000 (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 $50,000 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.


 






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(bb)          
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.


 


(cc)           
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.


 


(dd)           Accountants.
The Company’s independent registered public accounting firm is Ernst & Young LLP. 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 December 31, 2019.


 


(ee)           
 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.


 






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(ff)             
Acknowledgment Regarding Purchaser’s Trading Activity. Anything in this
Agreement or elsewhere herein to the contrary notwithstanding (except for Sections 3.2(e) and 4.14 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, presently may 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 Warrant 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.


 


(gg)           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.


 








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(hh)          
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.


 


(ii)              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.


 






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(jj)             
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 or any Subsidiary is currently subject to any U.S. sanctions administered
by the Office of Foreign Assets Control of the U.S. Treasury Department (“OFAC”).


 


(kk)          
U.S. Real Property Holding Corporation. The Company is not and has never been a U.S. real property holding corporation
within the meaning of Section 897 of the Internal Revenue Code of 1986, as amended, and the Company shall so certify upon Purchaser’s
request.


 


(ll)             
Bank Holding Company Act. Neither the Company nor any of its Subsidiaries or Affiliates is subject to the Bank Holding
Company Act of 1956, as amended (the “BHCA”) and to regulation by the Board of Governors of the Federal Reserve
System (the “Federal Reserve”). Neither the Company nor any of its Subsidiaries or Affiliates owns or controls,
directly or indirectly, five percent (5%) or more of the outstanding shares of any class of voting securities or twenty-five percent
or more of the total equity of a bank or any entity that is subject to the BHCA and to regulation by the Federal Reserve. Neither
the Company nor any of its Subsidiaries or Affiliates exercises a controlling influence over the management or policies of a bank
or any entity that is subject to the BHCA and to regulation by the Federal Reserve.


 


(mm)     
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 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.


 


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,
in which case they shall be accurate as of such date):


 


(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.


 






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(b) Understandings
or Arrangements. Such Purchaser is acquiring the Securities as principal for its own account and has no direct or indirect
arrangement or understandings with any other persons to distribute or regarding the distribution of such Securities (this representation
and warranty not limiting such Purchaser’s right to sell the Securities pursuant to the 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, 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.


 


(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) Access
to Information. Such Purchaser acknowledges that it has had the opportunity to review the Transaction Documents (including
all exhibits and schedules thereto) and the SEC Reports and has been afforded, (i) the opportunity to ask such questions as it
has deemed necessary of, and to receive answers from, representatives of the Company concerning the terms and conditions of the
offering of the Securities and the merits and risks of investing in the Securities; (ii) access to information about the Company
and its financial condition, results of operations, business, properties, management and prospects sufficient to enable it to
evaluate its investment; and (iii) the opportunity to obtain such additional information that the Company possesses or can acquire
without unreasonable effort or expense that is necessary to make an informed investment decision with respect to the investment.
Such Purchaser acknowledges and agrees that neither the Placement Agent nor any Affiliate of the Placement Agent has provided
such Purchaser with any information or advice with respect to the Securities nor is such information or advice necessary or desired.
Neither the Placement Agent nor any Affiliate has made or makes any representation as to the Company or the quality of the Securities
and the Placement Agent and any Affiliate may have acquired non-public information with respect to the Company which such Purchaser
agrees need not be provided to it. In connection with the issuance of the Securities to such Purchaser, neither the Placement
Agent nor any of its Affiliates has acted as a financial advisor or fiduciary to such Purchaser.


 






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(f)               
Certain Transactions and Confidentiality. Other than consummating the transactions contemplated hereunder, such Purchaser
has not, nor has any Person acting on behalf of or pursuant to any understanding with such Purchaser, directly or indirectly 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, directors, 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 the avoidance of doubt, nothing contained
herein shall constitute a representation or warranty, or preclude any actions, with respect to locating or borrowing shares in
order to effect Short Sales or similar transactions in the future.


 


The Company acknowledges
and agrees that the representations contained in this 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 transactions contemplated hereby. Notwithstanding the foregoing, for the avoidance of doubt,
nothing contained herein shall constitute a representation or warranty, or preclude any actions, with respect to locating or borrowing
shares in order to effect Short Sales or similar transactions in the future.


 


ARTICLE IV.

OTHER AGREEMENTS OF THE PARTIES


 


4.1            Warrant
Shares. If all or any portion of a Warrant is exercised at a time when there is an effective registration statement to cover
the issuance or resale of the Warrant Shares or if the Warrant is exercised via cashless exercise, the Warrant Shares issued pursuant
to any such exercise shall be issued free of all legends. If at any time following the date hereof the Registration Statement
(or any subsequent registration statement registering the sale or resale of the Warrant Shares) is not effective or is not otherwise
available for the sale or resale of the Warrant Shares, the Company shall immediately notify the holders of the Warrants in writing
that such registration statement is not then effective and thereafter shall promptly notify such holders when the registration
statement is effective again and available for the sale or resale of the Warrant Shares (it being understood and agreed that the
foregoing shall not limit the ability of the Company to issue, or any Purchaser to sell, any of the Warrant Shares in compliance
with applicable federal and state securities laws). The Company shall use best efforts to keep a registration statement (including
the Registration Statement) registering the issuance or resale of the Warrant Shares effective during the term of the Warrants.


 






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4.2             
Furnishing of Information.


 


(a)              
Until the earlier of the time that (i) no Purchaser owns Securities and (ii) the Warrants have expired, the Company covenants
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.


 


4.3             
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
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.


 


4.4             
Securities Laws Disclosure; Publicity. The Company shall (a) by the Disclosure Time, issue a press release disclosing
the material terms of the transactions contemplated hereby, and (b) file a Current Report on Form 8-K, including the Transaction
Documents as exhibits thereto, with the Commission within the time required by the Exchange Act. 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. In addition, effective upon
the issuance of such press release, the Company acknowledges and agrees that any and all confidentiality or similar obligations
under any agreement, whether written or oral, between the Company, any of its Subsidiaries or any of their respective officers,
directors, agents, employees or Affiliates on the one hand, and any of the Purchasers or any of their Affiliates on the other
hand, shall terminate. 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 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).


 






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4.5             
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.


 


4.6             
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 4.4, 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 constitutes,
or the Company reasonably 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 the Company, any of its
Subsidiaries, or any of their respective officers, directors, agents, employees or Affiliates, or a duty to the Company, any 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.


 


4.7             
Use of Proceeds. Except as set forth in the Prospectus Supplement, 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.


 






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4.8             
Indemnification of Purchasers. Subject to the provisions of this Section 4.8, 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 the 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 solely based upon a material 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 is finally judicially determined to constitute fraud, gross negligence or willful misconduct).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 (x) the employment thereof has been specifically authorized by the Company in
writing, (y) the Company has failed after a reasonable period of time to assume such defense and to employ counsel or (z) 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 (1) for
any settlement by a Purchaser Party effected without the Company’s prior written consent, which shall not be unreasonably
withheld or delayed; or (2) to the extent, but only to the extent that a loss, claim, damage or liability is attributable to any
Purchaser Party’s breach of any of the representations, warranties, covenants or agreements made by such Purchaser Party
in this Agreement or in the other Transaction Documents. The indemnification required by this Section 4.8 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.


 


4.9          
Reservation of Common Stock. As of the date hereof, the Company has reserved and the Company shall continue to reserve
and keep available at all times, free of preemptive rights, a sufficient number of shares of Common Stock for the purpose of enabling
the Company to issue Shares pursuant to this Agreement and Warrant Shares pursuant to any exercise of the Warrants.


 


4.10         
Listing of Common Stock. The Company hereby agrees to use commercially reasonable to maintain the listing or quotation
of the Common Stock on the Trading Market on which it is currently listed, and concurrently with the Closing, the Company shall
apply to list or quote all of the Shares and Warrant Shares on such Trading Market and promptly secure the listing of all of the
Shares and Warrant Shares on such Trading Market. The Company further agrees, if the Company applies to have the Common Stock
traded on any other Trading Market, it will then include in such application all of the Shares and Warrant Shares, and will take
such other action as is necessary to cause all of the Shares and Warrant Shares to be listed or quoted on such other Trading Market
as promptly as possible. The Company will then take all action reasonably necessary to continue the listing and trading of its
Common Stock on a Trading Market and will comply in all respects with the Company’s reporting, filing and other obligations
under the bylaws or rules of the 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.


 






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4.11         
Reserved.


 


4.12         
Subsequent Equity Sales.


 


(a)              
From the date hereof until 60 days after the Closing Date, 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 first (1st) year anniversary of the Closing Date, 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 (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, or effects a transaction under, any agreement, including, but not limited to, an equity
line of credit, whereby the Company may issue 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)              
Notwithstanding the foregoing, this Section 4.12 shall not apply in respect of an Exempt Issuance, except that no Variable
Rate Transaction shall be an Exempt Issuance.


 






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4.13         
Equal Treatment of Purchasers. No consideration (including any modification of this Agreement) shall be offered
or paid to any Person to amend or consent to a waiver or modification of any provision 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. 


 


4.14         
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 4.4.  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 4.4, such Purchaser will maintain the confidentiality
of the existence and terms of this transaction and the information included in 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 4.4, (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 4.4 and (iii) no Purchaser shall have any duty of confidentiality or duty not to trade in the securities of the Company
to the Company or its Subsidiaries after the issuance of the initial press release as described in Section 4.4.  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.


 


4.15         
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.


 


4.16         
Exercise Procedures. The form of Notice of Exercise included in the Warrants set forth the totality of the procedures
required of the Purchasers in order to exercise the Warrants. No additional legal opinion, other information or instructions shall
be required of the Purchasers to exercise their Warrants. Without limiting the preceding sentences, 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 in order to exercise the Warrants. The Company shall honor exercises of the Warrants and shall deliver Warrant
Shares in accordance with the terms, conditions and time periods set forth in the Transaction Documents.


 






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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 the fifth (5th) Trading Day following the date hereof;
provided, however, that no such termination will affect the right of any party to sue for any breach by any other
party (or parties).


 


5.2             
Fees and Expenses. 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 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, the Prospectus and
the Prospectus Supplement, 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 time of transmission, if such notice or
communication is delivered via facsimile at the facsimile number or email attachment at the email address as 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 time of
transmission, if such notice or communication is delivered via facsimile at the facsimile number or email attachment at the email
address as 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 Subsidiaries, the Company shall simultaneously file such notice with the Commission pursuant to a Current Report on Form
8-K.


 






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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 Purchasers which purchased at least 50.1% in interest of the Shares based on the initial Subscription Amounts
hereunder or, in the case of a waiver, by the party against whom enforcement of any such waived provision is sought, provided
that if any amendment, modification or waiver disproportionately and adversely impacts a Purchaser (or group of Purchasers), the
consent of such disproportionately impacted Purchaser (or group of Purchasers) shall also be required. 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. Any proposed amendment
or waiver that disproportionately, materially and adversely affects the rights and obligations of any Purchaser relative to the
comparable rights and obligations of the other Purchasers shall require the prior written consent of such adversely affected Purchaser.
Any amendment effected in accordance with this Section 5.5 shall be binding upon each Purchaser and holder of Securities and the
Company.


 


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. The Placement Agent shall be the third party beneficiary of the representations and
warranties of the Company in Section 3.1 and the representations and warranties of the Purchasers in Section 3.2 and the covenants
in Section 4.16. 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 4.8, Section 4.16 and this Section 5.8.


 


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 any 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 4.8, the prevailing party in such Action or Proceeding shall be reimbursed by the non-prevailing
party for its reasonable attorneys’ fees and other costs and expenses incurred with the investigation, preparation and prosecution
of such Action or Proceeding.


 






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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 an exercise of a Warrant, the applicable Purchaser shall be required to return any shares
of Common Stock subject to any such rescinded 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.


 






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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          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 the legal counsel of the Placement Agent. The legal counsel of the Placement Agent
does not represent any of the Purchasers and only represents the Placement Agent. 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.


 


5.18         
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.


 


5.19         
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.


 


5.20         
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.


 


5.21         
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)





 



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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.


 


	Onconova
    Therapeutics, Inc.	 	Address
    for Notice:
	 	 	 
	By:	                	 	Fax:
	 	Name:	 	E-mail:
	 	Title:
	 	 
	With a copy to (which shall not constitute notice):






 


[REMAINDER OF PAGE INTENTIONALLY LEFT BLANK


SIGNATURE PAGE FOR PURCHASER FOLLOWS]





 






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[PURCHASER SIGNATURE PAGES TO ONTX 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 Warrants to Purchaser (if not same as
address for notice):


 


 


 


DWAC for Shares:


 


	Subscription Amount: $	 	 



 


	Shares:	 	 



 


	Warrant Shares: 	 	 



 


	EIN Number: 	 	 


 


 ̈ Notwithstanding
anything contained in this Agreement to the contrary, by checking this box (i) the obligations of the above-signed
to purchase the securities set forth in this Agreement to be purchased from the Company by the above-signed, and the
obligations of the Company to sell such securities to the above-signed, shall be unconditional and all conditions to Closing
shall be disregarded, (ii) the Closing shall occur by the second (2nd) Trading Day following the date of this Agreement and
(iii) any condition to Closing contemplated by this Agreement (but prior to being disregarded by clause (i) above) that
required delivery by the Company or the above-signed of any agreement, instrument, certificate or the like or purchase price
(as applicable) shall no longer be a condition and shall instead be an unconditional obligation of the Company or the above-signed
(as applicable) to deliver such agreement, instrument, certificate or the like or purchase price (as applicable) to
such other party on the Closing Date.


 


[SIGNATURE PAGES CONTINUE]


  









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SCHEDULE 3.1(g)


  


See the section entitled “Capitalization” in the
Prospectus Supplement.


 






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SCHEDULE 3.1(i)


  


The Company disclosed material changes since December 31, 2018
in its SEC reports filed subsequent to the Form 10-K for the year ended December 31, 2018.


 


In addition, the Company disclosed in its Quarterly Report on
Form 10-Q for the quarter ended September 30, 2019 that the Company’s cash and cash equivalents as of September 30, 2019
was approximately $4.82 million. Since September 30, 2019, the Company has continued to spend cash in a manner consistent with
its past practices. In November 2019, the Company completed a public offering of its securities and received approximately $9.7
million in net proceeds.


 






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SCHEDULE 3.1(r)


  


The Company disclosed the following in Note 12 to the Company’s
unaudited condensed consolidated interim financial statements included in its Quarterly Report on Form 10-Q for the quarter ended
September 30, 2019:


 


12. Related-Party Transactions


 


The Company has entered into a research agreement, as subsequently
amended, with the Mount Sinai School of Medicine (“Mount Sinai”), with which a member of its board of directors and
a stockholder is affiliated. Mount Sinai is undertaking research on behalf of the Company on the terms set forth in the agreements.
Mount Sinai, in collaboration with the Company, will prepare applications for patents generated from the research. Results from
all projects will belong exclusively to Mount Sinai, but the Company will have an exclusive option to license any inventions, resulting
therefrom. Payments to Mount Sinai under this research agreement for the three months ended September 30, 2019 and 2018 were $88,000
and $88,000, respectively, and for the nine months ended September 30, 2019 and 2018 were $263,000 and $263,000, respectively.
At September 30, 2019 and December 31, 2018, the Company had $88,000 and $88,000, respectively, payable to Mount Sinai under this
agreement.


 


The Company has entered into a consulting agreement with a member
of its board of directors. The board member provides consulting services to the Company on the terms set forth in the agreement.
Payments to this board member for both the three months ended September 30, 2019 and 2018 were $33,000, and for both the nine months
ended September 30, 2019 and 2018 were $99,000. At both September 30, 2019 and December 31, 2018, the Company had $33,000 payable
under this agreement.


 






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