EX-10.1



 Exhibit 10.1 
 SECURITIES PURCHASE AGREEMENT 
 This Securities Purchase Agreement (this
“Agreement”) is dated as of July 23, 2013, between Rexahn Pharmaceuticals, 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 third Trading Day following the date hereof. 

  
 2 








 “Commission” means the United States Securities and
Exchange Commission. 
 “Common Stock” means the common stock of the Company, par value $0.0001
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 any Subsidiary which would entitle the holder thereof to acquire Common Stock, including, without limitation, any debt,
preferred stock, rights, option, warrant or other instrument that is convertible into or exercisable or exchangeable for, or otherwise entitles the holder thereof to receive, Common Stock. 

“Company Counsel” means Patton Boggs LLP with offices located at 2550 M Street N.W., Washington, DC
20037. 
 “Disclosure Schedules” means the Disclosure Schedules of the Company delivered
concurrently herewith. 
 “Effective Date” shall have the meaning ascribed to such term in
Section 3.1(f). 
 “EGS” means Ellenoff Grossman & Schole LLP, with offices
located at 150 East 42nd Street, New York, New York 10017. 
 “Escrow Agent” means Signature
Bank, a New York State chartered bank, with offices at 261 Madison Avenue, New York, New York 10016. 

“Escrow Agreement” means the escrow agreement entered into prior to the Closing Date, by and among the
Company, the Escrow Agent and H.C. Wainwright & Co., LLC pursuant to which the Purchasers shall deposit Subscription Amounts with the Escrow Agent to be applied to the transactions contemplated hereunder. 

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

“Exchange Act” means the Securities Exchange Act of 1934, as amended, and the rules and regulations
promulgated thereunder. 
 “Exempt Issuance” means the issuance of (a) shares of Common
Stock or options to employees, officers or directors of the Company pursuant to any stock or option plan duly adopted for such purpose, by a majority of the non-employee members of the Board of Directors or a majority of the members of a committee
of non-employee directors established for such purpose, (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, (c) securities issued to existing stockholders of the Company in satisfaction of their existing contractual rights, (d) securities issued pursuant to acquisitions or strategic transactions approved by


  
 3 








 
a majority of the disinterested directors of the Company, provided that any such issuance shall only be to a Person (or to the equityholders of a Person) which is, itself or through its
subsidiaries, an operating company or an owner of an asset in a business synergistic with the business of the Company and shall provide to the Company additional benefits in addition to the investment of funds, but shall not include a transaction in
which the Company is issuing securities primarily for the purpose of raising capital or to an entity whose primary business is investing in securities and (e) securities to a pharmaceutical company or biotechnology company in connection with a
strategic development partnership or a licensing agreement, but shall not include a transaction in which the Company is issuing securities primarily for the purpose of raising capital. 

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

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

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

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

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

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

 “Liens” means a lien, charge, pledge, security interest, encumbrance, right of first refusal,
preemptive right or other restriction. 
 “Material Adverse Effect” shall have the meaning
assigned to such term in Section 3.1(b). 
 “Material Permits” shall have the meaning
ascribed to such term in Section 3.1(m). 
 “NYSE MKT Approval” means the approval by the
NYSE MKT of the Company’s additional listing applications with regard to the listing of the Shares and Warrant Shares. 
 “Per Share Purchase Price” equals $0.50, 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 and prior to the Closing. 
 “Person” means an
individual or corporation, partnership, trust, incorporated or unincorporated association, joint venture, limited liability company, joint stock company, government (or an agency or subdivision thereof) or other entity of any kind. 

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


  
 4 








 “Proceeding” means an action, claim, suit, investigation or
proceeding (including, without limitation, an informal investigation or partial proceeding, such as a deposition). 
 “Prospectus” means the final prospectus filed for the Registration Statement. 
 “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. 333-175073 which registers the sale of the Shares, the Warrants and the Warrant Shares to the Purchaser(s). 
 “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 the location and/or reservation of borrowable shares of Common Stock). 
 “Subscription Amount” means, as to each Purchaser, the aggregate amount to be paid for 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. 

  
 5 








 “Subsidiary” means any subsidiary of the Company as set
forth on Schedule 3.1(a), and shall, where applicable, also include any direct or indirect subsidiary of the Company formed or acquired after the date hereof; provided however, that if the Company does not list any Person on
Schedule 3.1(a), then the term “Subsidiary” shall not be applicable for this Agreement or any of the Transaction Documents and of no further meaning or force and effect. 

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

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

“Transaction Documents” means this Agreement, the Warrants and any other documents or agreements executed
in connection with the transactions contemplated hereunder. 
 “Transfer Agent” means Olde
Monmouth Stock Transfer, the current transfer agent of the Company, with a mailing address of 200 Memorial Parkway, Atlantic Highlands, NJ 07716 and a facsimile number of (732) 872-2728, and any successor transfer agent of the Company.

 “Variable Rate Transaction” shall have the meaning ascribed to such term in
Section 4.12(b). 
 “Warrants” means, collectively, the Common Stock Warrant Warrants
delivered to the Purchasers at the Closing in accordance with Section 2.2(a) hereof, which Warrants shall be exercisable 6 months from the Closing Date and have a term of exercise equal to 5 years from the initial date of their exercisability,
in the form of Exhibit A attached hereto 
 “Warrant Shares” means the shares of Common
Stock issuable upon exercise of the Warrants. 
 ARTICLE II. 

PURCHASE AND SALE 
 2.1 Closing. On the Closing Date, upon the terms and subject to the conditions set forth herein, substantially concurrent with the execution and delivery of this Agreement by the parties hereto,
the Company agrees to sell, and the Purchasers, severally and not jointly, agree to purchase, up to an aggregate of $5,700,000 of Shares and Warrants as set forth on their respective signature pages to this Agreement. Each Purchaser shall deliver to
the Escrow Agent on or prior to the Closing Date, via wire transfer, as provided in Section 2.2(b), immediately available funds equal to such Purchaser’s Subscription Amount as set forth on the signature page hereto executed by such
Purchaser and 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. 

  
 6 








 Upon satisfaction of the covenants and conditions set forth in Sections 2.2 and 2.3, the Closing shall occur
at the offices of EGS or such other location as the parties shall mutually agree. 
 2.2 Deliveries. 

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

 (i) this Agreement duly executed by the Company; 

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

(iii) 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; 
 (iv) a Warrant registered in the name of such Purchaser to purchase up to a number of shares of
Common Stock equal to 35% of such Purchaser’s Shares, with an initial exercise price equal to $0.59 per share of Common Stock underlying the Warrant (such Warrant certificate may be delivered within three Trading Days of the Closing Date); and

 (v) the Prospectus and Prospectus Supplement (which may be delivered in accordance with Rule 172 under the
Securities Act). 
 (b) On or prior to the Closing Date, each Purchaser shall deliver or cause to be delivered to
the Company or the Escrow Agent, as applicable, the following: 
 (i) this Agreement duly executed by such
Purchaser; and 
 (ii) to the Escrow Agent, such Purchaser’s Subscription Amount by wire transfer to the
account as specified in the Escrow Agreement. 
 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 representations and warranties of the Purchasers contained herein shall be accurate in all
material respects on the Closing Date (unless as of a specific date therein); 
 (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 

  
 7 








 (iii) each Purchaser shall have delivered the items set forth in
Section 2.2(b). 
 (b) The respective obligations of the Purchasers hereunder in connection with the Closing
are subject to the following conditions being met: 
 (i) the representations and warranties of the Company
contained herein shall be accurate in all material respects when made and on the Closing Date (unless as of a specific date therein); 
 (ii) all obligations, covenants and agreements of the Company required to be performed at or prior to the Closing Date shall have been performed; 

(iii) the Company shall have delivered the items set forth in Section 2.2(a); 

(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 (except for any suspension of trading of limited duration agreed to by the Company, which suspension shall be terminated prior to the Closing), 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 each Purchaser, makes it impracticable or inadvisable to purchase the Securities at the Closing. 

ARTICLE III. 
 REPRESENTATIONS AND WARRANTIES 
 3.1 Representations and Warranties of
the Company. Except as set forth in the 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 direct and indirect Subsidiaries of the Company are set forth on Schedule 3.1(a). The Company owns, directly or indirectly, all of the capital stock or other equity
interests of each Subsidiary free and clear of any Liens, and all of the issued and outstanding shares of capital stock of each Subsidiary are validly issued and are fully paid, non-assessable and free of preemptive and similar rights to subscribe


  
 8 








 
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 and shall not be
applicable or have any further force or effect for this Agreement or any of the Transaction Documents. 
 (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 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 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, would 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”); provided that none of the following alone shall be deemed, in and of itself, to constitute a Material Adverse Effect: (x) a change in the market price or trading volume of the Common Stock or
(y) changes in general economic conditions or changes affecting the industry in which the Company operates generally (as opposed to Company-specific changes) so long as such changes do not have a materially disproportionate effect on the
Company. No Proceeding has been instituted, or to the knowledge of the Company, threatened in any such jurisdiction revoking, limiting or curtailing or seeking to revoke, limit or curtail such power and authority or qualification. 

(c) Authorization; Enforcement. The Company has the requisite corporate power and authority to enter into and to
consummate the transactions contemplated by each of the Transaction Documents and otherwise to carry out its obligations hereunder and thereunder. The execution and delivery of each of the 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 therewith other than in connection with the Required Approvals. Each 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. 

  
 9 








 (d) No Conflicts. The execution, delivery and performance by the
Company of the Transaction Documents, the issuance and sale of the Securities and the consummation by it of the transactions contemplated hereby and thereby to which it is a party do not and as of the Closing 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, 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 and approval required pursuant to
Section 4.4, (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”). 
 (f) Issuance of the Securities; Registration. The Shares and Warrant Shares are duly authorized and, when issued and paid for in accordance with the applicable Transaction Documents, 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, which became effective on July 5, 2011 (the “Effective Date”), including the Prospectus, and such amendments and supplements thereto as may have been
required to the date of this Agreement. 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 

  
 10 









 
the knowledge of the Company, are threatened by the Commission. The Company, if required by the rules and regulations of the Commission, proposes to file the Prospectus 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 filed in connection with the transactions contemplated by this Agreement, at time the Prospectus or any such 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 light of the circumstances under which they were made, not misleading. 
 (g) Capitalization. The
capitalization of the Company 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 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. The issuance and sale of the Securities will not obligate the Company to issue shares of Common Stock or other securities to any Person (other than the Purchasers)
and will not result in a right of any holder of Company securities to adjust the exercise, conversion, exchange or reset price under any of such securities. All of the outstanding shares of capital stock of the Company are 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. Except for
the approval by the NYSE MKT of the Company’s additional shares listing application to be filed pursuant to Section 4.10 and other Required Approvals, 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. 

  
 11 









 (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 Exchange Act, including pursuant to Section 13(a) or 15(d) thereof, for one year preceding the date hereof (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 Exchange
Act. The Company is not an issuer subject to Rule 144(i) under the Securities Act. The Company’s financial statements including in the Registration Statement, the Prospectus and the Prospectus Supplement have been prepared in accordance with
United States generally accepted accounting principles (“GAAP”) applied on a consistent basis during the periods involved, 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 year-end audit adjustments. 
 (i) Material Changes; Undisclosed Events, Liabilities or Developments. Since the date of the latest audited financial statements included within the Registration Statement, Prospectus and
Prospectus Supplement, except as specifically disclosed in a subsequent SEC Report filed prior to the date hereof, (i) there has been no event, occurrence or development that has had or that could reasonably be expected to result in a Material
Adverse Effect, (ii) the Company has not incurred any 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, 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 business, 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 one Trading Day prior to the date that this representation is made. 

  
 12 









 (j) Litigation. There is no Proceeding 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.

 (k) Labor Relations. No material 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. No executive officer, to the knowledge of the Company, 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 governmental body 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. 

  
 13 









 (m) Regulatory Permits. The Company and the Subsidiaries possess all
certificates, authorizations and permits issued by the appropriate federal, state, local or foreign regulatory authorities necessary to conduct their respective businesses as described in the Registration Statement, Prospectus and the Prospectus
Supplement, except where the failure to possess such permits could not reasonably be expected to result in a Material Adverse Effect (“Material Permits”), and neither the Company nor any Subsidiary has received any notice of
proceedings relating to the revocation or modification of any Material Permit. 
 (n) Title to Assets. The
Company does not own any real property. The Company and the Subsidiaries have 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 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 Liens for the payment of federal, state
or other taxes, 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, except where failure to be in compliance would not reasonably be expected to have a Material Adverse Effect. 
 (o) Patents and Trademarks. 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 material for use in connection with their respective businesses as described in the Registration Statement, Prospectus (collectively,
the “Intellectual Property Rights”) and the Prospectus Supplement and which the failure to so have could have a Material Adverse Effect. Neither the Company nor any Subsidiary has received a notice (written or otherwise) that any of
the Intellectual Property Rights used by the Company or any Subsidiary violates or infringes upon the rights of any Person. To the knowledge of the Company, all such Intellectual Property Rights are enforceable and there is no existing infringement
by another Person of any of the Intellectual Property Rights. The Company and its Subsidiaries have taken reasonable security measures to protect the secrecy, confidentiality and value of all of their intellectual properties, except where failure to
do so could not, individually or in the aggregate, reasonably be expected to have a Material Adverse Effect. 

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

  
 14 









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

(r) Sarbanes-Oxley; Internal Accounting Controls. The Company is in material compliance with all provisions of the
Sarbanes-Oxley Act of 2002 which are applicable to it as of the Closing Date. The Company and the Subsidiaries maintain a system of internal accounting controls designed 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 has established disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the Company that are designed 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 Company’s disclosure controls and procedures as of the end of the period covered by the Company’s 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 Company’s internal control over financial reporting (as such term is defined in the Exchange Act) that has materially affected, or is reasonably likely to materially affect, the
Company’s internal control over financial reporting. 
 (s) 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 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 3.1(s)
that may be due in connection with the transactions contemplated by the Transaction Documents. 

  
 15 









 (t) Investment Company. The Company is not, and is not an Affiliate
of, and immediately after receipt of payment for the Securities, will not be or be an Affiliate of, an “investment company” within the meaning of the Investment Company Act of 1940, as amended. The Company shall conduct its business in a
manner so that it will not become an “investment company” subject to registration under the Investment Company Act of 1940, as amended. 
 (u) Registration Rights. Except as set forth in Schedule 3.1(u) and SEC Reports, no Person has any right to cause the Company to effect the registration under the Securities Act of any
securities of the Company. 
 (v) Listing and Maintenance Requirements. The Common Stock is registered
pursuant to Section 12(b) or 12(g) of the Exchange Act, and the Company has taken no action designed to, or which to its knowledge is likely to have the effect of, terminating the registration of the Common Stock under the Exchange Act nor has
the Company received any notification that the Commission is contemplating terminating such registration. Except as set forth 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 Company is, and has no reason to believe that it will not
in the foreseeable future continue to be, in compliance with all such listing and maintenance requirements. 

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

(x) Disclosure. Except with respect to the material terms and conditions of the transactions contemplated by the
Transaction Documents, the Company confirms that neither it nor any other Person acting on its behalf has provided any of the Purchasers or their agents or counsel with any information that it believes constitutes or might constitute material,
non-public information which is not otherwise disclosed in the Registration Statement, Prospectus or 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, its business 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 

  
 16 









 
state any material fact necessary in order to make the statements made therein, in light of the circumstances under which they were made, not misleading. The press releases disseminated by the
Company during the twelve months preceding the date of this Agreement taken as a whole do not contain any untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary in order to make the statements
therein, in light of the circumstances under which they were made and when made, not misleading. The Company acknowledges and agrees that no Purchaser makes or has made any representations or warranties with respect to the transactions contemplated
hereby other than those specifically set forth in Section 3.2. 
 (y) No Integrated Offering.
Assuming the accuracy of the Purchasers’ representations and warranties set forth in Section 3.2, neither the Company, nor any of its Affiliates, nor any Person acting on its or their behalf has, directly or indirectly, made any offers or
sales of any security or solicited any offers to buy any security, under circumstances that would cause this offering of the Securities to be integrated with prior offerings by the Company for purposes of any applicable shareholder approval
provisions of any Trading Market on which any of the securities of the Company are listed or designated. 
 (z)
Solvency. Based on the consolidated financial condition of the Company as of the Closing Date, 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 outstanding secured and unsecured Indebtedness of the Company or any Subsidiary, or for which the Company or any Subsidiary has commitments are set
forth in the Registration Statement, Prospectus or Prospectus Supplement. 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. 

  
 17 









 (aa) Tax Status. Except for matters that would not, individually or
in the aggregate, have or reasonably be expected to result in a Material Adverse Effect, the Company and each Subsidiary has filed all necessary federal, state and foreign income and franchise tax returns and has paid or accrued all taxes shown as
due thereon, and the Company has no knowledge of a tax deficiency which has been asserted or threatened against the Company or any Subsidiary. 
 (bb) Foreign Corrupt Practices. Neither the Company, nor to the knowledge of the Company, any agent or other person acting on behalf of the Company, 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 made by any person acting on its behalf of which the Company is aware) which is in violation of law, or
(iv) violated in any material respect any provision of FCPA. 
 (cc) Accountants. The Company’s
accounting firm is set forth on Schedule 3.1(cc) of the Disclosure Schedules and in the Prospectus Supplement. To the knowledge and belief of the Company, such accounting firm is a registered public accounting firm as required by the Exchange
Act and such accounting firm expressed its opinion with respect to the financial statements included in the Company’s Annual Report for the year ending December 31, 2013. 

(dd) Acknowledgment Regarding Purchasers’ Purchase of Securities. To the Company’s knowledge:
(i) each Purchaser is acting solely in the capacity of an arm’s length purchaser with respect to the Transaction Documents and the transactions contemplated thereby and (ii) 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. The Company acknowledges that 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 Shares and Warrants. The Company further represents to each Purchaser that the Company’s decision
to enter into this Agreement and the other Transaction Documents has been based solely on the independent evaluation of the transactions contemplated hereby by the Company and its representatives. 

(ee) Acknowledgement 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), 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 

  
 18 









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

(gg) FDA. As to each product subject to the jurisdiction of the U.S. Food and Drug Administration
(“FDA”) under the Federal Food, Drug and Cosmetic Act, as amended, and the regulations thereunder (“FDCA”) that is manufactured, packaged, labeled, tested, distributed, sold, and/or marketed by the Company or any of
its Subsidiaries (each such product, a “Pharmaceutical Product”), such Pharmaceutical Product is being manufactured, packaged, labeled, tested, distributed, sold and/or marketed by the Company in compliance with all applicable
requirements under FDCA and similar FDA 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, Proceeding 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 U.S. federal or state
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 

  
 19 









 
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 U.S. 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 that it will not approve or clear for marketing any product being developed or proposed to
be developed by the Company. 
 (hh) 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”). 
 (ii) 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. 

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

  
 20 









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

(a) Organization; Authority. Such Purchaser is either an individual or an entity duly organized, validly existing
and in good standing under the laws of the jurisdiction of its organization with full right, corporate or partnership power and authority to enter into and to consummate the transactions contemplated by this Agreement and otherwise to carry out its
obligations hereunder and thereunder. The execution and delivery of this Agreement and performance by such Purchaser of the transactions contemplated by this Agreement have been duly authorized by all necessary corporate, partnership, limited
liability company or similar action, as applicable, on the part of such Purchaser. Each Transaction Document to which it is a party has been duly executed by such Purchaser, and when delivered by such Purchaser in accordance with the terms hereof,
will constitute the valid and legally binding obligation of such Purchaser, enforceable against it in accordance with its terms, except: (i) as limited by general equitable principles and applicable bankruptcy, insolvency, reorganization,
moratorium and other laws of general application affecting enforcement of creditors’ rights generally, (ii) as limited by laws relating to the availability of specific performance, injunctive relief or other equitable remedies and
(iii) insofar as indemnification and contribution provisions may be limited by applicable law. 
 (b)
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. Such Purchaser is not a registered broker-dealer under Section 15 of the Exchange
Act. 
 (d) Experience of Such Purchaser. Such Purchaser, either alone or together with its
representatives, has such knowledge, sophistication and experience in business and financial matters so as to be capable of evaluating the merits and risks of the prospective investment in the Securities, and has so evaluated the merits and risks of
such investment. Such Purchaser is able to bear the economic risk of an investment in the Securities and, at the present time, is able to afford a complete loss of such investment. 

(e) Certain Transactions and Confidentiality. Other than consummating the transactions contemplated hereunder, such
Purchaser has not, 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


  
 21 









 
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, such
Purchaser has maintained the confidentiality of all disclosures made to it in connection with this transaction (including the existence and terms of this transaction). Notwithstanding the foregoing, for avoidance of doubt, nothing contained herein
shall constitute a representation or warranty, or preclude any actions, with respect to the identification of the availability of, or securing of, available shares to borrow in order to effect Short Sales or similar transactions in the future.

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

 OTHER AGREEMENTS OF THE PARTIES 
 4.1 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, provided that, at the time of the issuance of the Warrant Shares, the holder of the Warrant is not an Affiliate
of the Company. 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. 
 4.2 Furnishing of Information. Until the earliest of the time that (i) no Purchaser is the holder of
Warrants or (ii) expiration of the Warrants or (iii) all Warrant Shares having been issued, 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 

  
 22 









 
requirements of the Exchange Act. As long as any Purchaser owns Securities, if the Company is not required to file reports pursuant to the Exchange Act, it will prepare and furnish to the
Purchasers and make publicly available in accordance with Rule 144(c) such information as is required for the Purchasers to sell the Securities, including without limitation, under Rule 144. The Company further covenants that it will take such
further action as any holder of Securities may reasonably request, to the extent required from time to time to enable such Person to sell such Securities without registration under the Securities Act, including without limitation, within the
requirements of the exemption provided by Rule 144. 
 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 9:00 a.m. (New York City time) on the Trading Day
immediately following the date hereof, issue a press release disclosing the material terms of the transactions contemplated hereby as permitted by the Securities Act, 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 the Company shall have publicly disclosed all material,
non-public information delivered to any of the Purchasers by the Company or any of its Subsidiaries, or any of their respective officers, directors, employees or agents in connection with the transactions contemplated by the Transaction Documents.
The Company and each Purchaser shall consult with each other in issuing any other press releases with respect to the transactions contemplated hereby, and neither the Company nor any Purchaser shall issue any such press release nor otherwise make
any such public statement without the prior consent of the Company, with respect to any press release of any Purchaser, or without the prior consent of each Purchaser, with respect to any press release of the Company, which consent shall not
unreasonably be withheld or delayed, except if such disclosure is required by law, in which case the disclosing party shall promptly provide the other party with prior notice of such public statement or communication. Notwithstanding the foregoing,
the Company shall not publicly disclose the name of any Purchaser, or include the name of any Purchaser in any filing with the Commission or any regulatory agency or Trading Market, without the prior written consent of such Purchaser, except
(a) as required by federal securities law in connection with the filing of final Transaction Documents with the Commission and (b) to the extent such disclosure is required by law or Trading Market regulations, in which case the Company
shall provide the Purchasers with prior notice of such disclosure permitted under this clause (b). 
 4.5 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. 

  
 23 









 4.6 Non-Public Information. Except with respect to the material terms and conditions
of the transactions contemplated by the Transaction Documents, the Company covenants and agrees that neither it, nor any other Person acting on its behalf will provide any Purchaser or its agents or counsel with any information that the Company
believes constitutes material non-public information, unless prior thereto such Purchaser shall have executed a written agreement with the Company regarding the confidentiality and use of such information. 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. The Company shall use the net proceeds from the sale of the Securities hereunder for working capital purposes and as otherwise described under the section titled “Use of Proceeds” in the Prospectus Supplement. 

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 (except as otherwise provided in this Section 4.8), 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 material 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 based upon a breach of such Purchaser Party’s representations, warranties or covenants under the Transaction Documents or any agreements or understandings such
Purchaser Party may have with any such stockholder or any violations by such Purchaser Party of state or federal securities laws or any conduct by such Purchaser Party which constitutes fraud, gross negligence, willful misconduct or malfeasance). If
any action shall be brought against any Purchaser Party in respect of which indemnity may be sought pursuant to this Agreement, such Purchaser Party shall promptly notify the Company in writing, and the Company shall have the right to assume the
defense thereof with counsel of its own choosing reasonably acceptable to the Purchaser Party. Any Purchaser Party shall have the right to employ separate counsel in any such action and participate in the defense thereof, but the fees and expenses
of such counsel shall be at the expense of such Purchaser Party except to the extent that (i) the employment thereof has been specifically authorized by the Company in writing, (ii) the Company has failed after a reasonable period of time
to assume such defense and to employ counsel or (iii) in such action there is, in the reasonable written opinion of counsel to the 

  
 24 









 
Purchaser which is furnished to the Company, a material conflict on any material issue between the position of the Company and the position of such Purchaser Party, in which case the Company
shall be responsible for the reasonable fees and expenses of no more than one such separate counsel. The Company will not be liable to any Purchaser Party under this Agreement (y) for any settlement by a Purchaser Party effected without the
Company’s prior written consent, which shall not be unreasonably withheld or delayed; or (z) to the extent, but only to the extent, that a loss, claim, damage or liability is attributable to (A) 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 or (B) any violations by such Purchaser of state or federal securities laws or any conduct by
such Purchaser which constitutes fraud, gross negligence, willful misconduct or malfeasance. 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 efforts to maintain the listing or quotation of the Common Stock on the Trading Market on which it is currently listed, and the Company shall promptly 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 that, 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. 
 4.11 [Reserved]. 
 4.12 Subsequent Equity Sales. 
 (a) From the date hereof
until 75 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. 

  
 25 









 (b) From the date hereof until the first 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 for cash consideration (or a combination of units hereof)
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 (1) 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 (2) 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) unless otherwise consented to by the Purchasers, enters into 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. 
 4.13 Equal Treatment of Purchasers. No consideration (including any modification of any Transaction Document) shall be offered or paid to any Purchaser 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 has been 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 

  
 26 









 
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 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.

 ARTICLE V. 
 MISCELLANEOUS 
 5.1 Termination. This Agreement may be terminated by any
Purchaser, as to such Purchaser’s obligations hereunder only and without any effect whatsoever on the obligations between the Company and the other Purchasers, by written notice to the other parties, if the Closing has not been consummated on
or before July 31, 2013; provided, however, that no such termination will affect the right of any party to sue for any breach by the 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, 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 supersede all prior agreements and
understandings, oral or written, with respect to such matters, which the parties acknowledge have been merged into such documents, exhibits and schedules. 
 5.4 Notices. Any and all notices or other communications or deliveries required or permitted to be provided hereunder shall be in writing and shall be deemed given and effective on the earliest of:
(a) the date of transmission, if such notice or communication is delivered via facsimile at the facsimile number set forth on the signature pages attached hereto prior to 5:30 p.m. (New York City time) on a Trading Day, (b) the next
Trading Day after the date of transmission, if such notice or communication is delivered via facsimile at the facsimile number 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


  
 27 









 
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. 
 5.5 Amendments; Waivers. No
provision of this Agreement may be waived, modified, supplemented or amended except in a written instrument signed, in the case of an amendment, by the Company and the Purchasers holding at least 51% 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. No waiver of any default with respect to any provision, condition or requirement of this Agreement shall be
deemed to be a continuing waiver in the future or a waiver of any subsequent default or a waiver of any other provision, condition or requirement hereof, nor shall any delay or omission of any party to exercise any right hereunder in any manner
impair the exercise of any such right. 
 5.6 Headings. The headings herein are for convenience only, do not constitute a
part of this Agreement and shall not be deemed to limit or affect any of the provisions hereof. 
 5.7 Successors and
Assigns. This Agreement shall be binding upon and inure to the benefit of the parties and their successors and permitted assigns. The Company may not assign this Agreement or any rights or obligations hereunder without the prior written consent
of each Purchaser (other than by merger). Any Purchaser may assign any or all of its rights under this Agreement to any Person to whom such Purchaser assigns or transfers any Securities, provided that such transferee agrees in writing to be bound,
with respect to the transferred Warrants, by the provisions of the Transaction Documents that apply to the “Purchasers.” 
 5.8 No Third-Party Beneficiaries. This Agreement is intended for the benefit of the parties hereto and their respective successors and permitted assigns and is not for the benefit of, nor may any
provision hereof be enforced by, any other Person, except as otherwise set forth in Section 4.8. 
 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 suit, action or proceeding, any claim that it is not personally subject to the
jurisdiction of any such court, that such suit, 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 suit,
action or proceeding by mailing a copy thereof via registered or certified mail or overnight 

  
 28 









 
delivery (with evidence of delivery) to such party at the address in effect for notices to it under this Agreement and agrees that such service shall constitute good and sufficient service of
process and notice thereof. Nothing contained herein shall be deemed to limit in any way any right to serve process in any other manner permitted by law. If either party shall commence an action, suit 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, suit or proceeding shall be reimbursed by the other party for its reasonable attorneys’ fees and other costs
and expenses incurred with the investigation, preparation and prosecution of such action or proceeding. 
 5.10 Survival.
The representations and warranties contained herein shall survive the Closing and the delivery of the Securities for a period of two years from the Closing. 
 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 the other party, it being understood that both 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 within five (5) Business Days, 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 to the extent permitted by the Warrant and applicable law, 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). 

  
 29 









 5.14 Replacement of Securities. If any certificate or instrument evidencing any
Securities is mutilated, lost, stolen or destroyed, the Company shall issue or cause to be issued in exchange and substitution for and upon cancellation thereof (in the case of mutilation), or in lieu of and substitution therefor, a new certificate
or instrument, but only upon receipt of evidence reasonably satisfactory to the Company of such loss, theft or destruction. The applicant for a new certificate or instrument under such circumstances shall also pay any reasonable third-party costs
(including customary indemnity) associated with the issuance of such replacement Securities. 
 5.15 Remedies. In
addition to being entitled to exercise all rights provided herein or granted by law, including recovery of damages, each of the Purchasers and the Company will be entitled to specific performance under the Transaction Documents. The parties agree
that monetary damages may not be adequate compensation for any loss incurred by reason of any breach of obligations contained in the Transaction Documents and hereby agree to waive and not to assert in any action for specific performance of any such
obligation the defense that a remedy at law would be adequate. 
 5.16 Payment Set Aside. To the extent that the Company
makes a payment or payments to any Purchaser pursuant to any Transaction Document or a Purchaser enforces or exercises its rights thereunder, and such payment or payments or the proceeds of such enforcement or exercise or any part thereof are
subsequently invalidated, declared to be fraudulent or preferential, set aside, recovered from, disgorged by or are required to be refunded, repaid or otherwise restored to the Company, a trustee, receiver or any other Person under any law
(including, without limitation, any bankruptcy law, state or federal law, common law or equitable cause of action), then to the extent of any such restoration the obligation or part thereof originally intended to be satisfied shall be revived and
continued in full force and effect as if such payment had not been made or such enforcement or setoff had not occurred. 
 5.17
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 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 their review and negotiation of the
Transaction Documents. For reasons of administrative convenience only, each Purchaser and its respective counsel have chosen to communicate with the Company through EGS. EGS does not represent any of the Purchasers and only represents H.C.
Wainwright & Co., LLC, 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. 

  
 30 









 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) 

  
 31 









 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. 
  

									
	REXAHN PHARMACEUTICALS, INC.	 		 	Address for Notice:
			
		 		 	 15245 Shady Grove Rd

Suite 455
 Rockville, MD
20850

	By: 	 	  
	 		 	Facsimile: (240) 268-5310
		 	Name: Tae Heum Jeong	 		 		 	
		 	Title: Chief Financial Officer	 		 		 	

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

Patton Boggs LLP 
 2550 M Street, N.W. 
 Washington, DC 20037 

Telephone:         (202) 457-6000 

Facsimile:          (202) 457-6315 

Attention:           Hwan Kim, Esq. 

[REMAINDER OF PAGE INTENTIONALLY LEFT BLANK 
 SIGNATURE PAGE FOR PURCHASER FOLLOWS] 







 [PURCHASER SIGNATURE PAGES TO RNN SECURITIES PURCHASE AGREEMENT] 

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

Email Address of Authorized Signatory:
                                         
                                         
                                         
                  
 Facsimile Number of Authorized
Signatory:
                                         
                                         
                                         
            
 Address for Notice to Purchaser: 

Address for Delivery of Securities to Purchaser (if not same as address for notice): 
 DWAC Instructions for Common Stock: 
 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 on the third
(3rd) 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] 







 EXHIBIT A 
 FORM OF WARRANT