Exhibit 10.2


 


NEITHER THIS SECURITY NOR THE SECURITIES
INTO WHICH THIS SECURITY IS CONVERTIBLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION
OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES
ACT”), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES
ACT OR PURSUANT TO AN AVAILABLE EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES
ACT AND IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS. THIS SECURITY AND THE SECURITIES ISSUABLE UPON CONVERSION OF THIS
SECURITY MAY BE PLEDGED IN CONNECTION WITH A BONA FIDE MARGIN ACCOUNT OR OTHER LOAN SECURED BY SUCH SECURITIES.


 


Original Issue Date: [ ________________________


Original Conversion Price (subject to adjustment
herein): $[____


 


$_______________


 


ORIGINAL ISSUE DISCOUNT CONVERTIBLE DEBENTURE


 


THIS ORIGINAL ISSUE
DISCOUNT CONVERTIBLE DEBENTURE is one of a series of duly authorized and validly issued Original Issue Discount Convertible Debentures
of Immune Pharmaceuticals, Inc., a Delaware corporation, (the “ Company ”), having its principal place of business
at 430 East 29th Street, Suite 940, New York, New York 10016, designated as its Original Issue Discount Convertible Debenture due
on the Maturity Date (as defined below) (this debenture, the “ Debenture ” and, collectively with the other
debentures of such series, the “ Debentures ”).


 


FOR VALUE RECEIVED,
the Company promises to pay to ________________________ or its registered assigns (the “ Holder ”), or shall
have paid pursuant to the terms hereunder, the principal sum of $_______________ on the Maturity Date (as defined in Section 2)
or such earlier date as this Debenture is required or permitted to be repaid as provided hereunder. This Debenture is subject to
the following additional provisions:


 


Section 1 .          
Definitions . For the purposes hereof, in addition to the terms defined elsewhere in this Debenture, (a) capitalized terms
not otherwise defined herein shall have the meanings set forth in the Purchase Agreement and (b) the following terms shall have
the following meanings:


 


“ Alternate
Consideration ” shall have the meaning set forth in Section 5(e).


 




    1 


     


    

 


“ Bankruptcy
Event ” means any of the following events: (a) the Company or any Significant Subsidiary (as such term is defined in
Rule 1-02(w) of Regulation S-X) thereof commences a case or other proceeding under any bankruptcy, reorganization, arrangement,
adjustment of debt, relief of debtors, dissolution, insolvency or liquidation or similar law of any jurisdiction relating to the
Company or any Significant Subsidiary thereof, (b) there is commenced against the Company or any Significant Subsidiary thereof
any such case or proceeding that is not dismissed within 60 days after commencement, (c) the Company or any Significant Subsidiary
thereof is adjudicated insolvent or bankrupt or any order of relief or other order approving any such case or proceeding is entered,
(d) the Company or any Significant Subsidiary thereof suffers any appointment of any custodian or the like for it or any substantial
part of its property that is not discharged or stayed within 60 calendar days after such appointment, (e) the Company or any Significant
Subsidiary thereof makes a general assignment for the benefit of creditors, (f) the Company or any Significant Subsidiary thereof
calls a meeting of its creditors with a view to arranging a composition, adjustment or restructuring of its debts, (g) the Company
or any Significant Subsidiary thereof admits in writing that it is generally unable to pay its debts as they become due, (h) the
Company or any Significant Subsidiary thereof, by any act or failure to act, expressly indicates its consent to, approval of or
acquiescence in any of the foregoing or takes any corporate or other action for the purpose of effecting any of the foregoing.


 


“ Beneficial
Ownership Limitation ” shall have the meaning set forth in Section 4(d).


 


“ 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.


 


“ Buy-In
” shall have the meaning set forth in Section 4(c)(v).


 


“ Change
of Control Transaction ” means the occurrence after the date hereof of any of (a) an acquisition after the date hereof
by an individual or legal entity or “group” (as described in Rule 13d-5(b)(1) promulgated under the Exchange Act) of
effective control (whether through legal or beneficial ownership of capital stock of the Company, by contract or otherwise) of
in excess of 33% of the voting securities of the Company (other than by means of conversion of the Debentures and the Securities
issued together with the Debentures), (b) the Company merges into or consolidates with any other Person, or any Person merges into
or consolidates with the Company and, after giving effect to such transaction, the stockholders of the Company immediately prior
to such transaction own less than 66% of the aggregate voting power of the Company or the successor entity of such transaction,
(c) the Company sells or transfers all or substantially all of its assets to another Person and the stockholders of the Company
immediately prior to such transaction own less than 66% of the aggregate voting power of the acquiring entity immediately after
the transaction, (d) a replacement at one time or within a three year period of more than one-half of the members of the Board
of Directors which is not approved by a majority of those individuals who are members of the Board of Directors on the Original
Issue Date (or by those individuals who are serving as members of the Board of Directors on any date whose nomination to the Board
of Directors was approved by a majority of the members of the Board of Directors who are members on the date hereof), or (e) the
execution by the Company of an agreement to which the Company is a party or by which it is bound, providing for any of the events
set forth in clauses (a) through (d) above.


 




    2 


     


    

 


“ Conversion
” shall have the meaning ascribed to such term in Section 4.


 


“ Conversion
Date ” shall have the meaning set forth in Section 4(a).


 


“ Conversion
Price ” shall have the meaning set forth in Section 4(b).


 


“ Conversion
Schedule ” means the Conversion Schedule in the form of Schedule 1 attached hereto.


 


“ Conversion
Shares ” means, collectively, the shares of Common Stock issuable upon conversion of this Debenture in accordance with
the terms hereof.


 


“ Debenture
Register ” means the register kept by the Company to record the registration of the Debenture and any transfers and conversions
of the Debenture.


 


“ Event
of Default ” shall have the meaning set forth in Section 8(a).


 


“ Event
of Default Conversion Price ” shall have the meaning set forth in Section 4(b).


 


“ Fundamental
Transaction ” shall have the meaning set forth in Section 5(e).


 


“ Initial
Conversion Price ” shall have the meaning set forth in Section 4(b).


 


“ Issuable
Maximum ” shall have the meaning set forth in Section 4(e).


 


“ Mandatory
Default Amount ” means 140% of the outstanding principal amount of this Debenture, plus 100% of accrued and unpaid interest
accrued following an Event of Default hereon, and all other amounts, costs, expenses and liquidated damages due in respect of this
Debenture.


 


“ Maturity
Date ” shall have the meaning set forth in Section 2(a).


 


“ New
York Courts ” shall have the meaning set forth in Section 9(d).


 




    3 


     


    

 


“ Notice
of Conversion ” shall have the meaning set forth in Section 4(a).


 


“ Original
Issue Date ” means the date of the first issuance of the Debentures, regardless of any transfers of any Debenture and
regardless of the number of instruments which may be issued to evidence such Debentures.


 


“ Permitted
Indebtedness ” means (a) the indebtedness evidenced by the Debentures, (b) the Indebtedness existing on the Original
Issue Date and set forth on Schedule 3.1(aa) attached to the Purchase Agreement, (c) lease obligations and purchase money
indebtedness of up to $250,000, in the aggregate, incurred in connection with the acquisition of capital assets and lease obligations
with respect to newly acquired or leased assets and (d) indebtedness that (i) is expressly subordinate to the Debentures pursuant
to a written subordination agreement with the Purchasers that is acceptable to each Purchaser in its sole and absolute discretion
and (ii) matures at a date later than the 91 st day following the Maturity Date.


 


“ Permitted
Lien ” means the individual and collective reference to the following: (a) Liens for taxes, assessments and other governmental
charges or levies not yet due or Liens for taxes, assessments and other governmental charges or levies being contested in good
faith and by appropriate proceedings for which adequate reserves (in the good faith judgment of the management of the Company)
have been established in accordance with GAAP, (b) Liens imposed by law which were incurred in the ordinary course of the Company’s
business, such as carriers’, warehousemen’s and mechanics’ Liens, statutory landlords’ Liens, and other
similar Liens arising in the ordinary course of the Company’s business, and which (x) do not individually or in the aggregate
materially detract from the value of such property or assets or materially impair the use thereof in the operation of the business
of the Company and its consolidated Subsidiaries or (y) are being contested in good faith by appropriate proceedings, which proceedings
have the effect of preventing for the foreseeable future the forfeiture or sale of the property or asset subject to such Lien,
(c) Liens incurred in connection with Permitted Indebtedness under clauses (a), (b) and (d) thereunder, and (d) Liens incurred
in connection with Permitted Indebtedness under clause (c) thereunder, provided that such Liens are not secured by assets of the
Company or its Subsidiaries other than the assets so acquired or leased.


 


“ Purchase
Agreement ” means the Securities Purchase Agreement, dated as of [____________, 2017 among the Company and the original
Holders, as amended, modified or supplemented from time to time in accordance with its terms.


 


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


 


“ Share
Delivery Date ” shall have the meaning set forth in Section 4(c)(ii).


 




    4 


     


    

 


“ Successor
Entity ” shall have the meaning set forth in Section 5(e).


 


“ 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).


 


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


 


Section 2 .          
Maturity Date; Interest .


 


a)        This
Debenture shall become due and payable on the earlier of (i) [__________ 1 and
(ii) the closing by the Company of one or more subsequent financings with gross proceeds to the Company equal to $5,000,000 in
the aggregate (as such date may be extended below, the “ Maturity Date ”). Notwithstanding the foregoing, the
Holder, in its sole and complete discretion, may extend the Maturity Date of this Debenture for a period of up to nine (9) months
(or until [__________ 2 ) by delivering to the Company a written notice of extension
within two (2) Trading Days following (A) the six (6) month anniversary of the Original Issue Date or (B) the receipt of written
notice from the Company of its closing of one or more subsequent financings as described in (ii) above. For the avoidance of doubt,
this Debenture may not be prepaid by the Company without the express written consent of the Holder.


 


 



 


1
6 months from the date of issuance.


2
9 months from the date of issuance


 




    5 


     


    

 


b)         No
interest shall be due on the Debenture except upon an Event of Default as described in Section 8(b).


 


Section 3.           
Registration of Transfers and Exchanges .


 


a)        
Different Denominations . This Debenture is exchangeable for an equal aggregate principal amount of Debentures of different
authorized denominations, as requested by the Holder surrendering the same. No service charge will be payable for such registration
of transfer or exchange.


 


b)       
 Investment Representations . This Debenture has been issued subject to certain investment representations of the original
Holder set forth in the Purchase Agreement and may be transferred or exchanged only in compliance with the Purchase Agreement and
applicable federal and state securities laws and regulations.


 


c)        
Reliance on Debenture Register . Prior to due presentment for transfer to the Company of this Debenture, the Company and
any agent of the Company may treat the Person in whose name this Debenture is duly registered on the Debenture Register as the
owner hereof for the purpose of receiving payment as herein provided and for all other purposes, whether or not this Debenture
is overdue, and neither the Company nor any such agent shall be affected by notice to the contrary.


 


Section 4.           
Conversion .


 


a)        
Voluntary Conversion . At any time after the Original Issue Date until this Debenture is no longer outstanding, this Debenture
shall be convertible, in whole or in part, into shares of Common Stock at the option of the Holder, at any time and from time to
time (subject to the conversion limitations set forth in Section 4(d) and Section 4(e) hereof). The Holder shall effect conversions
by delivering to the Company a Notice of Conversion, the form of which is attached hereto as Annex A (each, a “ Notice
of Conversion ”), specifying therein the principal amount of this Debenture to be converted and the date on which such
conversion shall be effected (such date, the “ Conversion Date ”). If no Conversion Date is specified in a Notice
of Conversion, the Conversion Date shall be the date that such Notice of Conversion is deemed delivered hereunder. No ink-original
Notice of Conversion shall be required, nor shall any medallion guarantee (or other type of guarantee or notarization) of any Notice
of Conversion form be required. To effect conversions hereunder, the Holder shall not be required to physically surrender this
Debenture to the Company unless the entire principal amount of this Debenture has been so converted in which case the Holder shall
surrender this Debenture as promptly as is reasonably practicable after such conversion without delaying the Company’s obligation
to deliver the shares on the Share Delivery Date. Conversions hereunder shall have the effect of lowering the outstanding principal
amount of this Debenture in an amount equal to the applicable conversion. The Holder and the Company shall maintain records showing
the principal amount(s) converted and the date of such conversion(s). The Company may deliver an objection to any Notice of Conversion
within one (1) Business Day of delivery of such Notice of Conversion. In the event of any dispute or discrepancy, the records of
the Holder shall be controlling and determinative in the absence of manifest error. The Holder, and any assignee by acceptance
of this Debenture, acknowledge and agree that, by reason of the provisions of this paragraph, following conversion of a portion
of this Debenture, the unpaid and unconverted principal amount of this Debenture may be less than the amount stated on the face
hereof.


 




    6 


     


    

 


b)       
Conversion Price; Alternate Conversion Price .


 


i.            
Conversion Price . The conversion price in effect on any Conversion Date shall be equal to $[____ , 3
subject to adjustment herein (the “ Initial Conversion Price ”).


 


ii.           
Alternate Conversion Price Upon an Event of Default . At any time after the occurrence of an Event of Default (regardless
of whether such Event of Default has been cured), the Holder may, at the Holder’s option, convert the outstanding Principal
Amount plus any liquidated damages into shares of Common Stock at price per share equal to the lowest daily VWAP for the fifteen
(15) days prior to conversion (the “ Event of Default Conversion Price ”, and together with the Initial Conversion
Price, the “ Conversion Price ”). Notwithstanding the foregoing, in no event shall the Event of Default Conversion
Price be lower than $1.00.


 


c)       
Mechanics of Conversion .


 


i.            
Conversion Shares Issuable Upon Conversion of Principal Amount . The number of Conversion Shares issuable upon a conversion
hereunder shall be determined by the quotient obtained by dividing (x) the outstanding principal amount of this Debenture to be
converted by (y) the Conversion Price.


 


ii.           
Delivery of Certificate Upon Conversion . Not later than two (2) Trading Days after each Conversion Date (the “ Share
Delivery Date ”), the Company shall deliver, or cause to be delivered, to the Holder a certificate or certificates representing
the Conversion Shares which, on or after the six month anniversary of the Original Issue Date, shall be free of restrictive legends
and trading restrictions (other than those which may then be required by the Purchase Agreement) representing the number of Conversion
Shares being acquired upon the conversion of this Debenture. On or after the six month anniversary of the Original Issue Date,
the Company shall deliver any certificate or certificates required to be delivered by the Company under this Section 4(c) electronically
through the Depository Trust Company or another established clearing corporation performing similar functions.


 


 



 


3
100% of market price at the time of signing.


  




    7 


     


    

 


iii.          
Failure to Deliver Certificates . If, in the case of any Notice of Conversion, such certificate or certificates are not
delivered to or as directed by the applicable Holder by the Share Delivery Date, the Holder shall be entitled to elect by written
notice to the Company at any time on or before its receipt of such certificate or certificates, to rescind such Conversion, in
which event the Company shall promptly return to the Holder any original Debenture delivered to the Company and the Holder shall
promptly return to the Company the Common Stock certificates issued to such Holder pursuant to the rescinded Conversion Notice.


 


iv.          
Obligation Absolute; Partial Liquidated Damages . The Company’s obligations to issue and deliver the Conversion Shares
upon conversion of this Debenture in accordance with the terms hereof are absolute and unconditional, irrespective of any action
or inaction by the Holder to enforce the same, any waiver or consent with respect to any provision hereof, the recovery of any
judgment against any Person or any action to enforce the same, or any setoff, counterclaim, recoupment, limitation or termination,
or any breach or alleged breach by the Holder or any other Person of any obligation to the Company or any violation or alleged
violation of law by the Holder or any other Person, and irrespective of any other circumstance which might otherwise limit such
obligation of the Company to the Holder in connection with the issuance of such Conversion Shares; provided , however
, that such delivery shall not operate as a waiver by the Company of any such action the Company may have against the Holder. In
the event the Holder of this Debenture shall elect to convert any or all of the outstanding principal amount hereof, the Company
may not refuse conversion based on any claim that the Holder or anyone associated or affiliated with the Holder has been engaged
in any violation of law, agreement or for any other reason, unless an injunction from a court, on notice to Holder, restraining
and or enjoining conversion of all or part of this Debenture shall have been sought and obtained, and the Company posts a surety
bond for the benefit of the Holder in the amount of 150% of the outstanding principal amount of this Debenture, which is subject
to the injunction, which bond shall remain in effect until the completion of arbitration/litigation of the underlying dispute and
the proceeds of which shall be payable to the Holder to the extent it obtains judgment. In the absence of such injunction, the
Company shall issue Conversion Shares or, if applicable, cash, upon a properly noticed conversion. If the Company fails for any
reason to deliver to the Holder such certificate or certificates pursuant to Section 4(c)(ii) by the Share Delivery Date, the Company
shall pay to the Holder, in cash, as liquidated damages and not as a penalty, for each $1,000 of principal amount being converted,
$10 per Trading Day (increasing to $20 per Trading Day on the fifth (5 th ) Trading
Day after such liquidated damages begin to accrue) for each Trading Day after such Share Delivery Date until such certificates
are delivered or Holder rescinds such conversion. Nothing herein shall limit a Holder’s right to pursue actual damages or
declare an Event of Default pursuant to Section 8 hereof for the Company’s failure to deliver Conversion Shares within the
period specified herein and the Holder shall have the right to pursue all remedies available to it hereunder, at law or in equity
including, without limitation, a decree of specific performance and/or injunctive relief. The exercise of any such rights shall
not prohibit the Holder from seeking to enforce damages pursuant to any other Section hereof or under applicable law.


 




    8 


     


    

 


v.           
Compensation for Buy-In on Failure to Timely Deliver Certificates Upon Conversion . In addition to any other rights available
to the Holder, if the Company fails for any reason to deliver to the Holder such certificate or certificates by the Share Delivery
Date pursuant to Section 4(c)(ii), and if after such Share Delivery Date the Holder is required by its brokerage firm to purchase
(in an open market transaction or otherwise), or the Holder’s brokerage firm otherwise purchases, shares of Common Stock
to deliver in satisfaction of a sale by the Holder of the Conversion Shares which the Holder was entitled to receive upon the conversion
relating to such Share Delivery Date (a “ Buy-In ”), then the Company shall (A) pay in cash to the Holder (in
addition to any other remedies available to or elected by the Holder) the amount, if any, by which (x) the Holder’s total
purchase price (including any brokerage commissions) for the Common Stock so purchased exceeds (y) the product of (1) the aggregate
number of shares of Common Stock that the Holder was entitled to receive from the conversion at issue multiplied by (2) the actual
sale price at which the sell order giving rise to such purchase obligation was executed (including any brokerage commissions) and
(B) at the option of the Holder, either reissue (if surrendered) this Debenture in a principal amount equal to the principal amount
of the attempted conversion (in which case such conversion shall be deemed rescinded) or deliver to the Holder the number of shares
of Common Stock that would have been issued if the Company had timely complied with its delivery requirements under Section 4(c)(ii).
For example, if the Holder purchases Common Stock having a total purchase price of $11,000 to cover a Buy-In with respect to an
attempted conversion of this Debenture with respect to which the actual sale price of the Conversion Shares (including any brokerage
commissions) giving rise to such purchase obligation was a total of $10,000 under clause (A) of the immediately preceding sentence,
the Company shall be required to pay the Holder $1,000. The Holder shall provide the Company written notice indicating the amounts
payable to the Holder in respect of the Buy-In and, upon request of the Company, evidence of the amount of such loss. Nothing herein
shall limit a Holder’s right to pursue any other remedies available to it hereunder, at law or in equity including, without
limitation, a decree of specific performance and/or injunctive relief with respect to the Company’s failure to timely deliver
certificates representing shares of Common Stock upon conversion of this Debenture as required pursuant to the terms hereof.


 




    9 


     


    

 


vi.         
Reservation of Shares Issuable Upon Conversion . The Company covenants that it will at all times reserve and keep available
out of its authorized and unissued shares of Common Stock for the sole purpose of issuance upon conversion of this Debenture as
herein provided, free from preemptive rights or any other actual contingent purchase rights of Persons other than the Holder (and
the other holders of the Debentures), not less than such aggregate number of shares of the Common Stock as shall (subject to the
terms and conditions set forth in the Purchase Agreement) be issuable (taking into account the adjustments and restrictions of
Section 5) upon the conversion of the then outstanding principal amount of this Debenture. The Company covenants that all shares
of Common Stock that shall be so issuable shall, upon issue, be duly authorized, validly issued, fully paid and nonassessable.


 


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


 


viii.        
Transfer Taxes and Expenses . The issuance of certificates for shares of the Common Stock on conversion of this Debenture
shall be made without charge to the Holder hereof for any documentary stamp or similar taxes that may be payable in respect of
the issue or delivery of such certificates, provided that, the Company shall not be required to pay any tax that may be payable
in respect of any transfer involved in the issuance and delivery of any such certificate upon conversion in a name other than that
of the Holder of this Debenture so converted and the Company shall not be required to issue or deliver such certificates unless
or until the Person or Persons requesting the issuance thereof shall have paid to the Company the amount of such tax or shall have
established to the satisfaction of the Company that such tax has been paid. The Company shall pay all Transfer Agent fees required
for same-day processing of any Notice of Conversion and all fees to the Depository Trust Company (or another established clearing
corporation performing similar functions) required for same-day electronic delivery of the Conversion Shares.


 




    10 


     


    

 


d)          
Holder’s Conversion Limitations . The Company shall not effect any conversion of this Debenture, and a Holder shall
not have the right to convert any portion of this Debenture, to the extent that after giving effect to the conversion set forth
on the applicable Notice of Conversion, the Holder (together with the Holder’s Affiliates, and any Persons acting as a group
together with the Holder or any of the Holder’s Affiliates) would beneficially own in excess of the Beneficial Ownership
Limitation (as defined below).  For purposes of the foregoing sentence, the number of shares of Common Stock beneficially
owned by the Holder and its Affiliates shall include the number of shares of Common Stock issuable upon conversion of this Debenture
with respect to which such determination is being made, but shall exclude the number of shares of Common Stock which are issuable
upon (i) conversion of the remaining, unconverted principal amount of this Debenture beneficially owned by the Holder or any of
its Affiliates and (ii) exercise or conversion of the unexercised or unconverted portion of any other securities of the Company
subject to a limitation on conversion or exercise analogous to the limitation contained herein (including, without limitation,
any other Debentures) beneficially owned by the Holder or any of its Affiliates.  Except as set forth in the preceding sentence,
for purposes of this Section 4(d), beneficial ownership shall be calculated in accordance with Section 13(d) of the Exchange Act
and the rules and regulations promulgated thereunder. To the extent that the limitation contained in this Section 4(d) applies,
the determination of whether this Debenture is convertible (in relation to other securities owned by the Holder together with any
Affiliates) and of which principal amount of this Debenture is convertible shall be in the sole discretion of the Holder, and the
submission of a Notice of Conversion shall be deemed to be the Holder’s determination of whether this Debenture may be converted
(in relation to other securities owned by the Holder together with any Affiliates) and which principal amount of this Debenture
is convertible, in each case subject to the Beneficial Ownership Limitation. To ensure compliance with this restriction, the Holder
will be deemed to represent to the Company each time it delivers a Notice of Conversion that such Notice of Conversion has not
violated the restrictions set forth in this paragraph and the Company shall have no obligation to verify or confirm the accuracy
of such determination. In addition, a determination as to any group status as contemplated above shall be determined in accordance
with Section 13(d) of the Exchange Act and the rules and regulations promulgated thereunder .
For purposes of this Section 4(d), in determining the number of outstanding shares of Common Stock, the Holder may rely on the
number of outstanding shares of Common Stock as stated in the most recent of the following: (i) the Company’s most recent
periodic or annual report filed with the Commission, as the case may be, (ii) a more recent public announcement by the Company,
or (iii) a more recent written notice by the Company or the Company’s transfer agent setting forth the number of shares of
Common Stock outstanding.  Upon the written or oral request of a Holder, the Company shall within two Trading Days confirm
orally and in writing to the Holder the number of shares of Common Stock then outstanding.  In any case, the number of outstanding
shares of Common Stock shall be determined after giving effect to the conversion or exercise of securities of the Company, including
this Debenture, by the Holder or its Affiliates since the date as of which such number of outstanding shares of Common Stock was
reported. The “ Beneficial Ownership Limitation ” shall be 4.99% of the number of shares of the Common Stock
outstanding immediately after giving effect to the issuance of shares of Common Stock issuable upon conversion of this Debenture
held by the Holder. The Holder, upon notice to the Company, may increase or decrease the Beneficial Ownership Limitation provisions
of this Section 4(d), provided that the Beneficial Ownership Limitation in no event exceeds 9.99% of the number of shares of the
Common Stock outstanding immediately after giving effect to the issuance of shares of Common Stock upon conversion of this Debenture
held by the Holder and the Beneficial Ownership Limitation provisions of this Section 4(d) shall continue to apply. Any increase
in the Beneficial Ownership Limitation will not be effective until the 61 st day
after such notice is delivered to the Company. The Beneficial Ownership Limitation provisions of this paragraph shall be construed
and implemented in a manner otherwise than in strict conformity with the terms of this Section 4(d) to correct this paragraph (or
any portion hereof) which may be defective or inconsistent with the intended Beneficial Ownership Limitation contained herein or
to make changes or supplements necessary or desirable to properly give effect to such limitation. The limitations contained in
this paragraph shall apply to a successor holder of this Debenture .


 




    11 


     


    

 


e)        
Issuance Limitations . Notwithstanding anything herein to the contrary, if the Company has not obtained Shareholder Approval,
then the Company may not issue, upon conversion of this Debenture, a number of shares of Common Stock which, when aggregated with
any shares of Common Stock issued on or after the Original Issue Date and prior to such Conversion Date (i) in connection with
the conversion of any Debentures issued pursuant to the Purchase Agreement and (ii) in connection with the issuance of Shares issued
pursuant to the Purchase Agreement, would exceed _______ 4 shares of Common Stock
(subject to adjustment for forward and reverse stock splits, recapitalizations and the like) (such number of shares, the “
Issuable Maximum ”). Each Holder shall be entitled to a portion of the Issuable Maximum equal to the quotient obtained
by dividing (x) the original principal amount of the Holder’s Debenture by (y) the aggregate original principal amount of
all Debentures issued on the Original Issue Date to all Holders (except for Crystal Group for the reasons described below). Such
portion shall be adjusted upward ratably in the event a Holder no longer holds any Debentures and the amount of shares issued to
the Holder pursuant to the Holder’s Debentures was less than the Holder’s pro-rata share of the Issuable Maximum. Notwithstanding
the foregoing, the Debenture held by Crystal Group or its successors, assigns or transferees shall not be allocated any portion
of the Issuable Maximum and shall not be convertible into shares of Common Stock unless and until Shareholder Approval is obtained
and effective.


 


Section 5 .          
Certain Adjustments .


 


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


 


 



 


4
19.99% of the number of shares of Common Stock outstanding on the Trading Day immediately preceding the date of the Purchase Agreement.


 




    12 


     


    

 


b)        
Intentionally Omitted .


 


c)        
Subsequent Rights Offerings . If the Company, at any time while the Debenture is outstanding, shall issue rights, options
or warrants to all holders of Common Stock (and not to the Holders) entitling them to subscribe for or purchase shares of Common
Stock at a price per share that is lower than the VWAP on the record date referenced below, then the Conversion Price shall be
multiplied by a fraction of which the denominator shall be the number of shares of the Common Stock outstanding on the date of
issuance of such rights, options or warrants plus the number of additional shares of Common Stock offered for subscription or purchase,
and of which the numerator shall be the number of shares of the Common Stock outstanding on the date of issuance of such rights,
options or warrants plus the number of shares which the aggregate offering price of the total number of shares so offered (assuming
delivery to the Company in full of all consideration payable upon exercise of such rights, options or warrants) would purchase
at such VWAP. Such adjustment shall be made whenever such rights, options or warrants are issued, and shall become effective immediately
after the record date for the determination of stockholders entitled to receive such rights, options or warrants.


 


d)        
Pro Rata Distributions . If the Company, at any time while this Debenture is outstanding, shall distribute to all holders
of Common Stock (and not to the Holder) evidences of its indebtedness or assets (including cash and cash dividends) or rights or
warrants to subscribe for or purchase any security, then in each such case the Conversion Price shall be adjusted by multiplying
the Conversion Price in effect immediately prior to the record date fixed for determination of stockholders entitled to receive
such distribution by a fraction of which the denominator shall be the VWAP determined as of the record date mentioned above, and
of which the numerator shall be such VWAP on such record date less the then per share fair market value at such record date of
the portion of such assets or evidence of indebtedness or rights or warrants so distributed applicable to one outstanding share
of the Common Stock as determined by the Board of Directors in good faith. In either case the adjustments shall be described in
a statement provided to the Holder of the portion of assets or evidences of indebtedness so distributed or such subscription rights
applicable to one share of Common Stock. Such adjustment shall be made whenever any such distribution is made and shall become
effective immediately after the record date mentioned above.


 




    13 


     


    

 


e)        
Fundamental Transaction . If, at any time while this Debenture is outstanding, (i) the Company, directly or indirectly,
in one or more related transactions effects any merger or consolidation of the Company with or into another Person, (ii) the Company,
directly or indirectly, effects any sale, lease, license, assignment, transfer, conveyance or other disposition of all or substantially
all of its assets in one or a series of related transactions, (iii) any, direct or indirect, purchase offer, tender offer or exchange
offer (whether by the Company or another Person) is completed pursuant to which holders of Common Stock are permitted to sell,
tender or exchange their shares for other securities, cash or property and has been accepted by the holders of 50% or more of the
outstanding Common Stock, (iv) the Company, directly or indirectly, in one or more related transactions effects any reclassification,
reorganization or recapitalization of the Common Stock or any compulsory share exchange pursuant to which the Common Stock is effectively
converted into or exchanged for other securities, cash or property, (v) the Company, directly or indirectly, in one or more related
transactions consummates a stock or share purchase agreement or other business combination (including, without limitation, a reorganization,
recapitalization, spin-off or scheme of arrangement) with another Person whereby such other Person acquires more than 50% of the
outstanding shares of Common Stock (not including any shares of Common Stock held by the other Person or other Persons making or
party to, or associated or affiliated with the other Persons making or party to, such stock or share purchase agreement or other
business combination) (each a “ Fundamental Transaction ”), then, upon any subsequent conversion of this Debenture,
the Holder shall have the right to receive, for each Conversion Share that would have been issuable upon such conversion immediately
prior to the occurrence of such Fundamental Transaction (without regard to any limitation in Section 4(d) and Section 4(e) on the
conversion of this Debenture), the number of shares of Common Stock of the successor or acquiring corporation or of the Company,
if it is the surviving corporation, and any additional consideration (the “ Alternate Consideration ”) receivable
as a result of such Fundamental Transaction by a holder of the number of shares of Common Stock for which this Debenture is convertible
immediately prior to such Fundamental Transaction (without regard to any limitation in Section 4(d) and Section 4(e) on the conversion
of this Debenture). For purposes of any such conversion, the determination of the Conversion Price shall be appropriately adjusted
to apply to such Alternate Consideration based on the amount of Alternate Consideration issuable in respect of one (1) share of
Common Stock in such Fundamental Transaction, and the Company shall apportion the Conversion Price among the Alternate Consideration
in a reasonable manner reflecting the relative value of any different components of the Alternate Consideration. If holders of
Common Stock are given any choice as to the securities, cash or property to be received in a Fundamental Transaction, then the
Holder shall be given the same choice as to the Alternate Consideration it receives upon any conversion of this Debenture following
such Fundamental Transaction. The Company shall cause any successor entity in a Fundamental Transaction in which the Company is
not the survivor (the “ Successor Entity ”) to assume in writing all of the obligations of the Company under
this Debenture and the other Transaction Documents (as defined in the Purchase Agreement) in accordance with the provisions of
this Section 5(e) pursuant to written agreements in form and substance reasonably satisfactory to the Holder and approved by the
Holder (without unreasonable delay) prior to such Fundamental Transaction and shall, at the option of the holder of this Debenture,
deliver to the Holder in exchange for this Debenture a security of the Successor Entity evidenced by a written instrument substantially
similar in form and substance to this Debenture which is convertible for a corresponding number of shares of capital stock of such
Successor Entity (or its parent entity) equivalent to the shares of Common Stock acquirable and receivable upon conversion of this
Debenture (without regard to any limitations on the conversion of this Debenture) prior to such Fundamental Transaction, and with
a conversion price which applies the conversion price hereunder to such shares of capital stock (but taking into account the relative
value of the shares of Common Stock pursuant to such Fundamental Transaction and the value of such shares of capital stock, such
number of shares of capital stock and such conversion price being for the purpose of protecting the economic value of this Debenture
immediately prior to the consummation of such Fundamental Transaction), and which is reasonably satisfactory in form and substance
to the Holder. Upon the occurrence of any such Fundamental Transaction, the Successor Entity shall succeed to, and be substituted
for (so that from and after the date of such Fundamental Transaction, the provisions of this Debenture and the other Transaction
Documents referring to the “Company” shall refer instead to the Successor Entity), and may exercise every right and
power of the Company and shall assume all of the obligations of the Company under this Debenture and the other Transaction Documents
with the same effect as if such Successor Entity had been named as the Company herein.


  




    14 


     


    

  


f)        
Calculations . All calculations under this Section 5 shall be made to the nearest cent or the nearest 1/100th of a share,
as the case may be. For purposes of this Section 5, the number of shares of Common Stock deemed to be issued and outstanding as
of a given date shall be the sum of the number of shares of Common Stock (excluding any treasury shares of the Company) issued
and outstanding.


 


g)        
Notice to the Holder .


 


i.            
Adjustment to Conversion Price . Whenever the Conversion Price is adjusted pursuant to any provision of this Section 5,
the Company shall promptly deliver to each Holder a notice setting forth the Conversion Price after such adjustment and setting
forth a brief statement of the facts requiring such adjustment.


 




    15 


     


    

 


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


 


Section 6 .         
Ranking of Debentures . This Debenture, along with the other Debentures issued in this series, shall rank junior to the
Indebtedness issued to Hercules Capital on July 29, 2015 pursuant to a Loan and Security Agreement, pari passu with the 6% convertible
note issued to EMA Financial, LLC on April 10, 2017 and senior to any other outstanding Indebtedness as of the Original Issue Date
in right of payment, whether with respect to payment or redemptions, interest, damages, upon liquidation or dissolution or otherwise.


 


Section 7 .         
Negative Covenants . As long as any portion of this Debenture remains outstanding, unless the holders of at least 67% in
principal amount of the then outstanding Debentures shall have otherwise given prior written consent, the Company shall not, and
shall not permit any of the Subsidiaries to, directly or indirectly:


 




    16 


     


    

 


a)        other
than Permitted Indebtedness, enter into, create, incur, assume, guarantee or suffer to exist any indebtedness for borrowed money
of any kind, including, but not limited to, a guarantee, on or with respect to any of its property or assets now owned or hereafter
acquired or any interest therein or any income or profits therefrom;


 


b)        other
than Permitted Liens, enter into, create, incur, assume or suffer to exist any Liens of any kind, on or with respect to any of
its property or assets now owned or hereafter acquired or any interest therein or any income or profits therefrom;


 


c)        amend
its charter documents, including, without limitation, its certificate of incorporation and bylaws, in any manner that materially
and adversely affects any rights of the Holder;


 


d)        repay,
repurchase or offer to repay, repurchase or otherwise acquire more than a de minimis number of shares of its Common Stock
or Common Stock Equivalents other than as to (i) the Conversion Shares as permitted or required under the Transaction Documents
and (ii) repurchases of Common Stock or Common Stock Equivalents of departing officers and directors of the Company, provided that
such repurchases shall not exceed an aggregate of $100,000 for all officers and directors during the term of this Debenture;


 


e)        repay,
repurchase or offer to repay, repurchase or otherwise acquire any Indebtedness, other than the Debentures if on a pro-rata basis,
other than regularly scheduled principal and interest payments as such terms are in effect as of the Original Issue Date, provided
that such payments shall not be permitted if, at such time, or after giving effect to such payment, any Event of Default exist
or occur;


 


f)         pay
cash dividends or distributions on any equity securities of the Company;


 


g)       enter
into any transaction with any Affiliate of the Company which would be required to be disclosed in any public filing with the Commission,
unless such transaction is made on an arm’s-length basis and expressly approved by a majority of the disinterested directors
of the Company (even if less than a quorum otherwise required for board approval); or


 


h)        
enter into any agreement with respect to any of the foregoing .


 




    17 


     


    

 


Section 8 .          
Events of Default .


 


a)        “
Event of Default ” means, wherever used herein, any of the following events (whatever the reason for such event and
whether such event shall be voluntary or involuntary or effected by operation of law or pursuant to any judgment, decree or order
of any court, or any order, rule or regulation of any administrative or governmental body):


 


i.         any
default in the payment of (A) the principal amount of any Debenture or (B) liquidated damages and other amounts owing to a Holder
on any Debenture, as and when the same shall become due and payable (whether on a Conversion Date or the Maturity Date or by acceleration
or otherwise) which default, solely in the case of a default under clause (B) above, is not cured within 3 Trading Days;


 


ii.        the
Company shall fail to observe or perform any other covenant or agreement contained in the Debentures (other than a breach by the
Company of its obligations to deliver shares of Common Stock to the Holder upon conversion, which breach is addressed in clause
(xi) below) which failure is not cured, if possible to cure, within the earlier to occur of (A) 5 Trading Days after notice of
such failure sent by the Holder or by any other Holder to the Company and (B) 10 Trading Days after the Company has become or should
have become aware of such failure;


 


iii.       a
default or event of default (subject to any grace or cure period provided in the applicable agreement, document or instrument)
shall occur under (A) any of the Transaction Documents (including a violation of any covenant therein) or (B) any other material
agreement, lease, document or instrument to which the Company or any Subsidiary is obligated (and not covered by clause (vi) below);


 


iv.       any
representation or warranty made in this Debenture, any other Transaction Documents, any written statement pursuant hereto or thereto
or any other report, financial statement or certificate made or delivered to the Holder or any other Holder shall be untrue or
incorrect in any material respect as of the date when made or deemed made;


 




    18 


     


    

 


v.        the
Company or any Significant Subsidiary (as such term is defined in Rule 1-02(w) of Regulation S-X) shall be subject to a Bankruptcy
Event;


 


vi.       the
Company or any Subsidiary shall default on any of its obligations under any mortgage, credit agreement or other facility, indenture
agreement, factoring agreement or other instrument under which there may be issued, or by which there may be secured or evidenced,
any indebtedness for borrowed money or money due under any long term leasing or factoring arrangement that (a) involves an obligation
greater than $150,000, whether such indebtedness now exists or shall hereafter be created, and (b) results in such indebtedness
becoming or being declared due and payable prior to the date on which it would otherwise become due and payable;


 


vii.      the
Common Stock shall not be eligible for listing or quotation for trading on a Trading Market and shall not be eligible to resume
listing or quotation for trading thereon within five Trading Days;


 


viii.     the
Company shall be a party to any Change of Control Transaction or Fundamental Transaction or shall agree to sell or dispose of all
or in excess of 33% of its assets in one transaction or a series of related transactions (whether or not such sale would constitute
a Change of Control Transaction);


 


ix.        the
Company shall not have filed with the Commission its Annual Report on Form 10-K for the year ended December 31, 2016 on or before
May 17, 2017;


 


x.        the
Company shall not have filed with the Commission a registration statement on Form S-1 for the issuance by the Company of securities
in a follow-on offering within twenty five (25) days of the Original Issue Date;


 


xi.        the
Company shall fail for any reason to deliver certificates to a Holder prior to the fifth Trading Day after a Conversion Date pursuant
to Section 4(c), including by way of public announcement, of the Company’s intention to not honor requests for conversions
of any Debentures in accordance with the terms hereof;


 


xii.       any
Person shall breach any agreement delivered to the initial Holders pursuant to Section 2.2 of the Purchase Agreement;


 


xiii.      the
electronic transfer by the Company of shares of Common Stock through the Depository Trust Company or another established clearing
corporation is no longer available or is subject to a “chill”; or


 


xiv.      any
monetary judgment, writ or similar final process shall be entered or filed against the Company, any subsidiary or any of their
respective property or other assets for more than $50,000, and such judgment, writ or similar final process shall remain unvacated,
unbonded or unstayed for a period of 45 calendar days.


 




    19 


     


    

 


b)       
Remedies Upon Event of Default . If any Event of Default occurs, the outstanding principal amount of this Debenture, plus
liquidated damages and other amounts owing in respect thereof through the date of acceleration, shall become, at the Holder’s
election, immediately due and payable in cash at the Mandatory Default Amount. Additionally, beginning immediately upon the occurrence
of any Event of Default, the Debenture shall begin to accrue interest at an interest rate equal to the lesser of 2% per month or
the maximum rate permitted under applicable law. Such interest shall accrue daily on the then outstanding principal amount of this
Debenture, shall be payable in cash only, and shall be paid upon repayment of the Debenture or upon full Conversion of the Debenture.
At the Holder’s sole discretion, and subject to the limitations set forth in Section 4(d) and 4(e), any accrued but unpaid
interest may be converted into shares of Common Stock at the Event of Default Conversion Price. Upon the payment in full of the
Mandatory Default Amount, the Holder shall promptly surrender this Debenture to or as directed by the Company. In connection with
such acceleration described herein, the Holder need not provide, and the Company hereby waives, any presentment, demand, protest
or other notice of any kind, and the Holder may immediately and without expiration of any grace period enforce any and all of its
rights and remedies hereunder and all other remedies available to it under applicable law. Such acceleration may be rescinded and
annulled by Holder at any time prior to payment hereunder and the Holder shall have all rights as a holder of the Debenture until
such time, if any, as the Holder receives full payment pursuant to this Section 8(b). No such rescission or annulment shall affect
any subsequent Event of Default or impair any right consequent thereon. Notwithstanding the foregoing, the Holder may also elect
to convert all or any portion of the remaining principal amount of the Debenture into shares of Common Stock during an Event of
Default as described in Section 4(b).


 


Section 9 .         
Miscellaneous .


 


a)        
Notices . Any and all notices or other communications or deliveries to be provided by the Holder hereunder, including, without
limitation, any Notice of Conversion, shall be in writing and delivered personally, by facsimile, by email attachment, or sent
by a nationally recognized overnight courier service, addressed to the Company, at the address set forth above, or such other facsimile
number, email address, or address as the Company may specify for such purposes by notice to the Holder delivered in accordance
with this Section 9(a).  Any and all notices or other communications or deliveries to be provided by the Company hereunder
shall be in writing and delivered personally, by facsimile, by email attachment, or sent by a nationally recognized overnight courier
service addressed to each Holder at the facsimile number or email address or address of the Holder appearing on the books of the
Company, or if no such facsimile number or email attachment or address appears on the books of the Company, at the principal place
of business of such Holder, as set forth in the Purchase Agreement.  Any notice or other communication or deliveries hereunder
shall be deemed given and effective on the earliest of (i) the date of transmission, if such notice or communication is delivered
via facsimile at the facsimile number or email attachment to the email address set forth on the signature pages attached hereto
prior to 5:30 p.m. (New York City time) on any date, (ii) the next Trading Day after the date of transmission, if such notice or
communication is delivered via facsimile at the facsimile number or email attachment to the email address set forth on the signature
pages attached hereto on a day that is not a Trading Day or later than 5:30 p.m. (New York City time) on any Trading Day, (iii)
the second Trading Day following the date of mailing, if sent by U.S. nationally recognized overnight courier service or (iv) upon
actual receipt by the party to whom such notice is required to be given.


 




    20 


     


    

 


b)        
Absolute Obligation . Except as expressly provided herein, no provision of this Debenture shall alter or impair the obligation
of the Company, which is absolute and unconditional, to pay the principal of, liquidated damages and accrued interest, as applicable,
on this Debenture at the time, place, and rate, and in the coin or currency, herein prescribed. This Debenture is a direct debt
obligation of the Company. This Debenture ranks pari passu with all other Debentures now or hereafter issued under the terms
set forth herein.         


 


c)        
Lost or Mutilated Debenture . If this Debenture shall be mutilated, lost, stolen or destroyed, the Company shall execute
and deliver, in exchange and substitution for and upon cancellation of a mutilated Debenture, or in lieu of or in substitution
for a lost, stolen or destroyed Debenture, a new Debenture for the principal amount of this Debenture so mutilated, lost, stolen
or destroyed, but only upon receipt of evidence of such loss, theft or destruction of such Debenture, and of the ownership hereof,
reasonably satisfactory to the Company.


 


d)        
Governing Law . All questions concerning the construction, validity, enforcement and interpretation of this Debenture 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 conflict of laws thereof. Each party agrees that all legal proceedings concerning the interpretation, enforcement
and defense of the transactions contemplated by any of the Transaction Documents (whether brought against a party hereto or its
respective Affiliates, directors, officers, shareholders, employees or agents) shall be commenced in the state and federal courts
sitting in the City of New York, Borough of Manhattan (the “ New York Courts ”). Each party hereto hereby irrevocably
submits to the exclusive jurisdiction of the New York Courts 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 such New York Courts, or such New York Courts are improper or 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 delivery (with evidence of delivery)
to such party at the address in effect for notices to it under this Debenture 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 applicable law. Each party hereto hereby irrevocably waives, to the fullest extent
permitted by applicable law, any and all right to trial by jury in any legal proceeding arising out of or relating to this Debenture
or the transactions contemplated hereby. If any party shall commence an action or proceeding to enforce any provisions of this
Debenture, then the prevailing party in such action or proceeding shall be reimbursed by the other party for its attorneys fees
and other costs and expenses incurred in the investigation, preparation and prosecution of such action or proceeding.


 




    21 


     


    

 


e)        
Waiver . Any waiver by the Company or the Holder of a breach of any provision of this Debenture shall not operate as or
be construed to be a waiver of any other breach of such provision or of any breach of any other provision of this Debenture. The
failure of the Company or the Holder to insist upon strict adherence to any term of this Debenture on one or more occasions shall
not be considered a waiver or deprive that party of the right thereafter to insist upon strict adherence to that term or any other
term of this Debenture on any other occasion. Any waiver by the Company or the Holder must be in writing.


 


f)        
Severability . If any provision of this Debenture is invalid, illegal or unenforceable, the balance of this Debenture shall
remain in effect, and if any provision is inapplicable to any Person or circumstance, it shall nevertheless remain applicable to
all other Persons and circumstances. If it shall be found that any interest or other amount deemed interest due hereunder violates
the applicable law governing usury, the applicable rate of interest due hereunder shall automatically be lowered to equal the maximum
rate of interest permitted under applicable law. The Company covenants (to the extent that it may lawfully do so) that it shall
not at any time insist upon, plead, or in any manner whatsoever claim or take the benefit or advantage of, any stay, extension
or usury law or other law which would prohibit or forgive the Company from paying all or any portion of the principal of or interest
on this Debenture as contemplated herein, wherever enacted, now or at any time hereafter in force, or which may affect the covenants
or the performance of this Debenture, and the Company (to the extent it may lawfully do so) hereby expressly waives all benefits
or advantage of any such law, and covenants that it will not, by resort to any such law, hinder, delay or impede the execution
of any power herein granted to the Holder, but will suffer and permit the execution of every such as though no such law has been
enacted.


 


g)       
Remedies, Characterizations, Other Obligations, Breaches and Injunctive Relief .  The remedies provided in this Debenture
shall be cumulative and in addition to all other remedies available under this Debenture and any of the other Transaction Documents
at law or in equity (including a decree of specific performance and/or other injunctive relief), and nothing herein shall limit
the Holder’s right to pursue actual and consequential damages for any failure by the Company to comply with the terms of
this Debenture.  The Company covenants to the Holder that there shall be no characterization concerning this instrument other
than as expressly provided herein. Amounts set forth or provided for herein with respect to payments, conversion and the like (and
the computation thereof) shall be the amounts to be received by the Holder and shall not, except as expressly provided herein,
be subject to any other obligation of the Company (or the performance thereof). The Company acknowledges that a breach by it of
its obligations hereunder will cause irreparable harm to the Holder and that the remedy at law for any such breach may be inadequate.
The Company therefore agrees that, in the event of any such breach or threatened breach, the Holder shall be entitled, in addition
to all other available remedies, to an injunction restraining any such breach or any such threatened breach, without the necessity
of showing economic loss and without any bond or other security being required. The Company shall provide all information and documentation
to the Holder that is requested by the Holder to enable the Holder to confirm the Company’s compliance with the terms and
conditions of this Debenture.


 




    22 


     


    

  


h)        
Next Business Day . Whenever any payment or other obligation hereunder shall be due on a day other than a Business Day,
such payment shall be made on the next succeeding Business Day.


 


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


 


Section 10 .   
Disclosure . Upon receipt or delivery by the Company of any notice in accordance with the terms of this Debenture, unless
the Company has in good faith determined that the matters relating to such notice do not constitute material, nonpublic information
relating to the Company or its Subsidiaries, the Company shall within two (2) Business Days after such receipt or delivery publicly
disclose such material, nonpublic information on a Current Report on Form 8-K or otherwise. In the event that the Company believes
that a notice contains material, non-public information relating to the Company or its Subsidiaries, the Company so shall indicate
to the Holder contemporaneously with delivery of such notice, and in the absence of any such indication, the Holder shall be allowed
to presume that all matters relating to such notice do not constitute material, nonpublic information relating to the Company or
its Subsidiaries.


 


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


 


(Signature Pages Follow)


 




    23 


     


    

 


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


 


	 	IMMUNE PHARMACEUTICALS, INC.
	 	 	 
	 	By:	 
	 	 	Name:
	 	 	Title:
	 	 	 
	 	Facsimile No. for delivery of Notices: _______________


 




    24 


     


    

 


ANNEX A


 


NOTICE OF CONVERSION


 


The undersigned hereby
elects to convert principal under the Original Issue Discount Convertible Debenture due [________ of Immune Pharmaceuticals, Inc.,
a Delaware corporation (the “ Company ”), into shares of common stock (the “ Common Stock ”),
of the Company according to the conditions hereof, as of the date written below. If shares of Common Stock are to be issued in
the name of a person other than the undersigned, the undersigned will pay all transfer taxes payable with respect thereto and is
delivering herewith such certificates and opinions as reasonably requested by the Company in accordance therewith. No fee will
be charged to the holder for any conversion, except for such transfer taxes, if any.


 


By the delivery of
this Notice of Conversion the undersigned represents and warrants to the Company that its ownership of the Common Stock does not
exceed the amounts specified under Section 4 of this Debenture, as determined in accordance with Section 13(d) of the Exchange
Act.


 


The undersigned agrees
to comply with the prospectus delivery requirements under the applicable securities laws in connection with any transfer of the
aforesaid shares of Common Stock.


 


Conversion calculations:


 


	 	Date to Effect Conversion:
	 	 
	 	Principal Amount of Debenture to be Converted:
	 	 
	 	Number of shares of Common Stock to be issued:
	 	 
	 	Signature:
	 	 
	 	Name:
	 	 
	 	Address for Delivery of Common Stock Certificates:
	 	 
	 	Or
	 	 
	 	DWAC Instructions:
	 	 
	 	Broker No:_____________ _
	 	Account No: ____________


  




    25 


     


    

 


Schedule 1


 


CONVERSION SCHEDULE


 


The Original Issue Discount Convertible
Debentures due on [________ in the aggregate principal amount of $____________ are issued by Immune Pharmaceuticals, Inc., a Delaware
corporation. This Conversion Schedule reflects conversions made under Section 4 of the above referenced Debenture.


 


Dated:


 


	Date of Conversion

(or for first entry,

Original Issue Date)	 	Amount of

Conversion	 	Aggregate

Principal

Amount

Remaining

Subsequent to

Conversion

(or original

Principal

Amount)	 	Company Attest	 
	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	 	 
	 	 	 	 	 	 	 	 


 






    26