Exhibit
4.1


 


DIGITAL
TURBINE, INC.


 


as
issuer,


 


the
Guarantors party hereto


 


AND


 


U.S.
Bank National Association


 


as
Trustee


 





 



 


Indenture


 


Dated as of September 28,

2016


 


8.75% Convertible Senior

Notes due 2020


 





 



 




     


     


    

 


Table
of Contents


[TIA CROSS REFERENCE TO BE ADDED WHEN
FILED WITH SEC]


 





	 	 	Page
	 	 	 
	Article 1.	DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION	1
	 	 	 
	Section 1.01	Definitions	1
	Section 1.02	Compliance Certificates and Opinions	17
	Section 1.03	Form of Documents Delivered to Trustee	18
	Section 1.04	Acts of Holders; Record Dates	18
	Section 1.05	Notices, Etc., to Trustee and Company	19
	Section 1.06	Notice to Holders; Waiver	19
	Section 1.07	Effect of Headings and Table of Contents	20
	Section 1.08	Successors and Assigns	20
	Section 1.09	Severability Clause	20
	Section 1.10	Benefits of Indenture	20
	Section 1.11	No Recourse Against Others	20
	 	 	 
	Article 2.	SECURITY FORMS	20
	 	 	 
	Section 2.01	Forms Generally	20
	Section 2.02	Form of Face of Note	21
	Section 2.03	Form of Reverse of Note	26
	 	 	 
	Article 3.	THE SECURITIES	37
	 	 	 
	Section 3.01	Title and Terms; Payments	37
	Section 3.02	Ranking	38
	Section 3.03	Denominations	38
	Section 3.04	Execution, Authentication, Delivery and Dating	38
	Section 3.05	Temporary Notes	39
	Section 3.06	Registration; Registration of Transfer and Exchange	39
	Section 3.07	Transfer Restrictions	41
	Section 3.08	Expiration of Restrictions	44
	Section 3.09	Mutilated, Destroyed, Lost and Stolen Notes	45
	Section 3.10	Persons Deemed Owners	46
	Section 3.11	Transfer and Exchange	46
	Section 3.12	Cancellation	49
	Section 3.13	CUSIP Numbers	49
	 	 	 
	Article 4.	PARTICULAR COVENANTS OF THE COMPANY	50
	 	 	 
	Section 4.01	Payment of Principal and Interest	50
	Section 4.02	Maintenance of Office or Agency	50
	Section 4.03	Appointments to Fill Vacancies in Trustee’s Office	50
	Section 4.04	Provisions as to Paying Agent	51
	Section 4.05	Existence	52
	Section 4.06	Rule 144A Information Requirement	52
	Section 4.07	Resale of Certain Notes	52
	Section 4.08	Commission Filings and Reports	52



 








    	 	i	 



     


    

 


Table
of Contents


(continued)


 


	 	 	Page
	 	 	 
	Section 4.09	Book-Entry System	52
	Section 4.10	Additional Interest	53
	Section 4.11	Stay; Extension and Usury Laws	53
	Section 4.12	Compliance Certificate	53
	Section 4.13	Limitation on Indebtedness and Restricted Payments	52
	Section 4.14	Additional Note Guarantees	54
	Section 4.15	Prohibition on Variable Rate Transactions	54
	 	 	 
	Article 5.	OPTIONAL REDEMPTION	54
	 	 	 
	Section 5.01	Optional Redemption	54
	Section 5.02	Notice of Optional Redemption; Selection of Notes	55
	Section 5.03	Payment of Notes Called for Redemption	56
	Section 5.04	Restrictions on Redemption	57
	 	 	 
	Article 6.	CONVERSION	57
	 	 	 
	Section 6.01	Right to Convert; Early Conversion Payment	57
	Section 6.02	Conversion Procedure	58
	Section 6.03	Settlement upon Conversion	60
	Section 6.04	Limitations on Issuance of Shares Due to Market Regulation	61
	Section 6.05	Adjustment of Conversion Rate	64
	Section 6.06	Effect of Reclassification, Consolidation, Merger or Sale	75
	Section 6.07	Adjustments of Prices	76
	Section 6.08	Adjustment upon a Make-Whole Fundamental Change	76
	Section 6.09	Taxes on Shares Issued	78
	Section 6.10	Reservation of Shares; Shares to be Fully Paid; Compliance with Governmental Requirements	78
	Section 6.11	Responsibility of Trustee and Conversion Agent	78
	Section 6.12	Notice to Holders Prior to Certain Actions	79
	Section 6.13	Shareholder Rights Plan	80
	Section 6.14	Company Determination Final	80
	 	 	 
	Article 7.	PURCHASE AT OPTION OF HOLDERS UPON A FUNDAMENTAL CHANGE	80
	 	 	 
	Section 7.01	Purchase at Option of Holders upon a Fundamental Change	80
	Section 7.02	Effect of Fundamental Change Purchase Notice	82
	Section 7.03	Withdrawal of Fundamental Change Purchase Notice	83
	Section 7.04	Deposit of Fundamental Change Purchase Price	83
	Section 7.05	Notes Purchased in Whole or in Part	84
	Section 7.06	Covenant to Comply With Securities Laws upon Purchase of Notes	84
	Section 7.07	Repayment to the Company	84
	 	 	 
	Article 8.	EVENTS OF DEFAULT; REMEDIES	84
	 	 	 
	Section 8.01	Events of Default	84



 




    	 	ii	 



     


    

 


Table
of Contents


(continued)


 


	 	 	Page
	 	 	 
	Section 8.02	Acceleration of Maturity: Waiver of Past Defaults and Rescission	86
	Section 8.03	Additional Interest	87
	Section 8.04	Collection of Indebtedness and Suits for Enforcement by Trustee	89
	Section 8.05	Trustee May File Proofs of Claim	89
	Section 8.06	Application of Money Collected	89
	Section 8.07	Limitation on Suits	90
	Section 8.08	Unconditional Right of Holders to Receive Payment	90
	Section 8.09	Restoration of Rights and Remedies	91
	Section 8.10	Rights and Remedies Cumulative	91
	Section 8.11	Delay or Omission Not Waiver	91
	Section 8.12	Control by Holders	91
	Section 8.13	Undertaking for Costs	91
	Section 8.14	Violations of Certain Covenants	92
	 	 	 
	Article 9.	MERGER, CONSOLIDATION OR SALE OF ASSETS	92
	 	 	 
	Section 9.01	Company May Consolidate, etc., only on Certain Terms	92
	Section 9.02	Successor Substituted	93
	 	 	 
	Article 10.	THE TRUSTEE	93
	 	 	 
	Section 10.01	Duties and Responsibilities of Trustee	93
	Section 10.02	Notice of Defaults	95
	Section 10.03	Reliance on Documents, Opinions, Etc	95
	Section 10.04	No Responsibility for Recitals, Etc	96
	Section 10.05	Trustee, Paying Agents, Conversion Agents or Registrar May Own Notes	97
	Section 10.06	Monies to be Held in Trust	97
	Section 10.07	Compensation and Expenses of Trustee	97
	Section 10.08	Officers’ Certificate as Evidence	97
	Section 10.09	Conflicting Interests of Trustee	98
	Section 10.10	Eligibility of Trustee	98
	Section 10.11	Resignation or Removal of Trustee	98
	Section 10.12	Acceptance by Successor Trustee	99
	Section 10.13	Succession by Merger, Etc	100
	Section 10.14	Preferential Collection of Claims	100
	Section 10.15	Trustee’s Application for Instructions from the Company	100
	 	 	 
	Article 11.	HOLDERS’ LISTS AND REPORTS BY TRUSTEE	101
	 	 	 
	Section 11.01	Company to Furnish Trustee Names and Addresses of Holders	101
	Section 11.02	Preservation of Information; Communications to Holders	101
	 	 	 
	Article 12.	SATISFACTION AND DISCHARGE	102
	 	 	 
	Section 12.01	Discharge of Indenture	102



 




    	 	iii	 



     


    

 


Table
of Contents


(continued)


 


	 	 	Page
	 	 	 
	Section 12.02	Deposited Monies to be Held in Trust by Trustee	102
	Section 12.03	Paying Agent to Repay Monies Held	102
	Section 12.04	Return of Unclaimed Monies	102
	Section 12.05	Reinstatement	103
	 	 	 
	Article 13.	SUPPLEMENTAL INDENTURES	103
	 	 	 
	Section 13.01	Supplemental Indentures without Consent of Holders	103
	Section 13.02	Supplemental Indentures with Consent of Holders	104
	Section 13.03	Execution of Supplemental Indentures	105
	Section 13.04	Effect of Supplemental Indentures	105
	Section 13.05	Reference in Notes to Supplemental Indentures	105
	Section 13.06	Notice to Holders of Supplemental Indentures	106
	 	 	 
	Article 14.	MISCELLANEOUS	106
	 	 	 
	Section 14.01	Notices	106
	Section 14.02	Certificate and Opinion as to Conditions Precedent	107
	Section 14.03	When Notes Are Disregarded	107
	Section 14.04	Rules by Trustee, Paying Agent and Registrar	107
	Section 14.05	Legal Holidays	107
	Section 14.06	Governing Law	107
	Section 14.07	No Recourse against Others	108
	Section 14.08	Successors	108
	Section 14.09	Multiple Originals	108
	Section 14.10	Table of Contents; Headings	108
	Section 14.11	Severability Clause	108
	Section 14.12	Calculations	108
	Section 14.13	Waiver of Jury Trial	108
	Section 14.14	Consent to Jurisdiction	109
	Section 14.15	Force Majeure	109
	Section 14.16	U.S.A. Patriot Act	109
	 	 	 
	Article 15.	NOTE GUARANTEES	109
	 	 	 
	Section 15.01	Guarantee	109
	Section 15.02	Limitation on Guarantor Liability	111
	Section 15.03	Execution and Delivery of Note Guarantee	111
	Section 15.04	Guarantors May Consolidate, etc., on Certain Terms	112
	Section 15.05	Releases	112



 








    	 	iv	 



     


    

 


INDENTURE, dated as of September 28, 2016
between Digital Turbine, Inc., a company duly incorporated and existing under the laws of Delaware, United States of America, and
having its principal office at 300 GUADALUPE STREET, SUITE 302, AUSTIN TX 78701, as Issuer (the “Company”),
the Guarantors (as defined) and U.S. Bank National Association, as Trustee (the “Trustee”).


 


RECITALS OF THE COMPANY


 


WHEREAS, the Company has duly authorized
the creation of an issue of 8.75% Convertible Senior Notes due 2020 (each a “Note” and collectively, the “Notes”)
of the tenor and amount hereinafter set forth, and to provide therefor the Company has duly authorized the execution and delivery
of this Indenture;


 


WHEREAS, the Guarantors have duly authorized
the creation of the Note Guarantees (as defined), and to provide therefor the Guarantors have duly authorized the execution and
delivery of this Indenture; and


 


WHEREAS, all things necessary to make the
Notes and the Note Guarantees, when executed by the Company and the Guarantors, respectively, and authenticated and delivered hereunder
and duly issued by the Company and the Guarantors, respectively, the valid and legally binding obligations of the Company and the
Guarantors, respectively, and to make this Indenture a valid and legally binding agreement of the Company and the Guarantors, respectively,
in accordance with the terms of the Notes, the Note Guarantees and this Indenture, have been done.


 


NOW, THEREFORE, THIS INDENTURE WITNESSETH,
for and in consideration of the premises and the purchases of the Notes by the Holders thereof, it is mutually agreed, for the
benefit of the Company and the equal and proportionate benefit of all Holders of the Notes, as follows:


 


Article
1.

DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION


 


Section 1.01         Definitions.
For all purposes of this Indenture, except as otherwise expressly provided or unless the context otherwise requires: (i) the terms
defined in this Article 1 have the meanings assigned to them in this Article and include the plural as well as the singular;


 


(i)          all
accounting terms not otherwise defined herein have the meanings assigned to them in accordance with GAAP; and


 


(ii)         the
words “herein,” “hereof” and “hereunder” and other words of similar import refer to this Indenture
as a whole and not to any particular Article, Section or other subdivision.


 


“Act,” when used with
respect to any Holder, has the meaning specified in Section 1.04.


 




    	 	1	 



     


    

 


“Additional Interest”
means all amounts, if any, payable pursuant to Section 8.03 hereof and Section 6 of the Registration Rights Agreement. Unless the
context otherwise requires, all references in this Indenture to interest include Additional Interest, if any. Any express reference
to Additional Interest in this Indenture shall not be construed as excluding Additional Interest in any other text where no such
express reference is made.


 


“Additional Shares” has
the meaning specified in Section 6.08(a).


 


“Affiliate” of any specified
Person means any other Person directly or indirectly controlling or controlled by or under direct or indirect common control with
such specified Person. For the purposes of this definition, “control” when used with respect to any specified Person
means the power to direct the management and policies of such Person, directly or indirectly, whether through the ownership of
voting securities, by contract or otherwise; and the terms “controlling” and “controlled” have meanings
correlative to the foregoing.


 


“Affiliate Notes” means
Notes owned by a Holder that is an affiliate of the Company (within the meaning of Rule 144) as of the applicable date of determination
or has been an affiliate of the Company (within the meaning of Rule 144) within the preceding three months.


 


“Agent Members” has the
meaning specified in Section 3.06(b).


 


“Applicable Conversion Price”
means the Conversion Price in effect at any given time.


 


“Applicable Conversion Rate”
means the Conversion Rate in effect at any given time.


 


“Applicable Procedures”
means, with respect to any transfer or transaction involving a Global Note or any beneficial interest therein, the rules and procedures
of the Depositary for such Note, in each case to the extent applicable to such transfer or transaction and as in effect from time
to time.


 


“Approved Stock Plan”
means any and all currently existing or future equity incentive plans or agreements providing for issuance, upon approval by the
Board or a duly authorized committee or delegee thereof, of shares of Common Stock, options to purchase Common Stock or other securities
of, or exchangeable for, the Company to the employees, officers, directors and/or consultants of the Company or its Subsidiaries,
in each case, that are approved by shareholders or are inducement plans under the rules and regulations of the Principal Market.
For clarity, the Company’s 2011 Equity Incentive Plan, as amended to date, and all shares issued and issuable thereunder
now or in the future, is included as an Approved Stock Plan.


 


“Attribution Parties”
means, collectively, the following Persons and entities: (i) any investment vehicle, including, any funds, feeder funds or managed
accounts, directly or indirectly managed or advised by the Holder’s investment manager or any of its Affiliates or principals,
(ii) any direct or indirect Affiliates of the Holder’s or any of the foregoing, and (iii) any other Persons whose beneficial
ownership of the Company's Common Stock would or could be aggregated with the Holder’s and the other Attribution Parties
for purposes of Section 13(d) of the Exchange Act. For clarity, the purpose of the foregoing is to subject, collectively, the Holder
and all other Attribution Parties to the Maximum Percentage.


 


“Authorized Capital Increase”
has the meaning specified in Section 6.04.


 






    	 	2	 



     


    

 


“Authorized Share Failure”
has the meaning specified in the definition of “Equity Conditions.”


 


“Board of Directors”
means, with respect to any Person, either the board of directors of such Person or any duly authorized committee of that board.


 


“Board Resolution” means,
with respect to any Person, a copy of a resolution certified by the Secretary or an Assistant Secretary or the General Counsel
of such Person to have been duly adopted by the Board of Directors and to be in full force and effect on the date of such certification,
and delivered to the Trustee.


 


“Business Day” means
any day other than a Saturday, a Sunday or a day on which the Federal Reserve Bank of New York or the Corporate Trust Office is
authorized or required by law or executive order to close or be closed.


 


“Capital Stock” means
any and all shares, interests, participations, rights or other equivalents (however designated) of corporate stock and, with respect
to partnerships, partnership interests (whether general or limited) and any other interest or participation that confers on a Person
the right to receive a share of the profits and losses of, or distributions of assets of, such partnership.


 


“Clause A Distribution”
has the meaning specified in Section 6.05(d).


 


“Clause B Distribution”
has the meaning specified in Section 6.05(d).


 


“Clause C Distribution”
has the meaning specified in Section 6.05(d).


 


“Close of Business” means
5:00 p.m. New York City time.


 


“Code” means the Internal
Revenue Code of 1986, as amended.


 


“Commission” means the
Securities and Exchange Commission, as from time to time constituted, created under the Exchange Act.


 


“Common Stock” means
the shares of common stock, $0.0001 par value per share, of the Company as they exist on the date of this Indenture, subject to
the provisions of Section 6.06.


 


“Company” means the Person
named as the “Company” in the first paragraph of this instrument until a successor Person shall have become such pursuant
to the applicable provisions of this Indenture, and thereafter “Company” shall mean such successor Person.


 


“Company Order” or “Company
Request” means a written request or order signed in the name of the Company (a) by its Chief Executive Officer, its President,
or its Chief Financial Officer or any of its Vice Presidents, and (b) by its Treasurer, any Assistant Treasurer, its Secretary,
any Assistant Secretary or any of its Vice Presidents, and delivered to the Trustee.


 


“Conversion Agent” means
the Trustee or such other office or agency designated by the Company where Notes may be presented for conversion.


 






    	 	3	 



     


    

 


“Conversion Date” has
the meaning specified in Section 6.02(b).


 


“Conversion Notice” shall
have the meaning specified in Section 6.02(b).


 


“Conversion Price” means,
per share of Common Stock, $1,000 divided by the Applicable Conversion Rate.


 


“Conversion Rate” means
initially 733.14 shares of Common Stock per $1,000 Principal Amount of Notes, subject to adjustment as set forth herein.


 


“Conversion Shares” means
shares of Common Stock received pursuant to conversion of Notes in accordance with Article 6 hereof.


 


“Conversion Share Delivery Date”
has the meaning specified in Section 6.02(c)


 


“Corporate Trust Office”
means the office of the Trustee at which this Indenture shall, at any particular time, be principally administered, which office
is, at the date as of which this Indenture is dated, located at U.S. Bank National Association, 633 West Fifth Street, 24th Floor,
Los Angeles, California 90071, Attention: B. Scarbrough (Digital Turbine Administrator), Facsimile No.: (213) 615-6197, or such
other address in the United States as the Trustee may designate from time to time by notice to the Holders and the Company, or
the principal corporate trust office in the United States of any successor Trustee (or such other address in the United States
as such successor Trustee may designate from time to time by notice to the Holders and the Company). With respect to presentation
of notes for Registration of transfer or exchange or Maturity, such address shall be the address set forth above.


 


“Daily VWAP” means the
per share volume-weighted average price of the Common Stock as displayed under the heading “Bloomberg VWAP” on Bloomberg
page “APPS <equity> AQR” (or any successor thereto if such page it not available) in respect of the period from
the scheduled open of trading until the scheduled close of trading of the primary trading session on such VWAP Trading Day (or
if such volume-weighted average price is unavailable, the market value of one share of the Common Stock on such VWAP Trading Day,
determined, if practicable, using a volume-weighted average method, by an independent, nationally recognized investment banking
firm retained by the Company for this purpose). The Daily VWAP shall be determined without regard to after-hours trading or any
other trading outside of the regular trading session trading hours.


 


“Default” means any event
that is or with the passage of time or the giving of notice or both would become an Event of Default.


 


“Depositary” means DTC
until a successor Depositary shall have become such pursuant to the applicable provisions of this Indenture, and thereafter “Depositary”
shall mean such successor Depositary.


 


“Distributed Property”
has the meaning specified in Section 6.05(d).


 


“DTC” means The Depository
Trust Company.


 






    	 	4	 



     


    

 


“Early Conversion Payment”
means, with respect to any conversion of the Notes prior to September 23, 2019, a payment equal to the remaining scheduled payments
of interest that would have been made on the Notes being converted from the date of conversion (or, in the case of conversion between
a Regular Record Date and the following Interest Payment Date, from such Interest Payment Date) until the September 23, 2019.


 


“Effective Date” has
the meaning specified in Section 6.08(c).


 


“effective date” for
purposes of Section 6.05, means the first date on which the shares of Common Stock trade on the applicable exchange or applicable
market, regular way, reflecting the relevant share split or share combination, as applicable.


 


“Eligible Market” has
the meaning specified in the definition of “Fundamental Change.”


 






    	 	5	 



     


    

 


“Equity Conditions” means,
with respect to an given date of determination: (i) on each day during the period beginning thirty (30) calendar days prior to
such applicable date of determination and ending on and including such applicable date of determination (the “Equity Conditions
Measuring Period”) either (x) one or more Registration Statements filed pursuant to the Registration Rights Agreement
shall be effective and the prospectus contained therein shall be available on such applicable date of determination (with, for
the avoidance of doubt, any shares of Common Stock previously sold pursuant to such prospectus deemed unavailable) for the resale
of all shares of Common Stock to be issued in connection with the event requiring this determination (or, in connection with a
redemption, issuable upon conversion of the Notes being redeemed in the event requiring this determination at the Conversion Price
then in effect (without regard to any limitations on conversion set forth herein)) (the “Required Minimum Securities Amount”),
in each case, in accordance with the terms of the Registration Rights Agreement (it being understood that any day that, under the
Registration Rights Agreement, the Registration Statement or prospectus contained therein is not required to be available shall
be disregarded for purposes of measuring compliance during the Equity Conditions Measuring Period of this clause (x)) or (y) the
Required Minimum Securities Amount shall be eligible for sale pursuant to Rule 144 without the need for registration under any
applicable federal or state securities laws (in each case, disregarding any limitation on conversion of the Notes, other issuance
of securities with respect to the Notes and exercise of the Warrants) and the Company is in compliance with the requirements of
Rule 144(c)(1), including, without limitation, satisfying the current public information requirement under Rule 144(c); (ii) on
each day during the Equity Conditions Measuring Period, the Common Stock (including all Required Minimum Securities Amount) is
listed or designated for quotation (as applicable) on the Nasdaq Capital Market or other Eligible Market and shall not have been
suspended from trading on the Nasdaq Capital Market or other Eligible Market (other than suspensions of not more than two (2) days
and occurring prior to the applicable date of determination due to business announcements by the Company) nor shall delisting or
suspension by an Eligible Market have been threatened in writing (with a reasonable prospect of delisting occurring after giving
effect to all applicable notice, appeal, compliance and hearing periods) or reasonably likely to occur or pending as evidenced
by (A) a writing by the Nasdaq Capital Market or other Eligible Market or (B) the Company falling below the minimum listing maintenance
requirements of the Nasdaq Capital Market or other Eligible Market on which the Common Stock is then listed or designated for quotation
(as applicable) (provided, at any time that the Nasdaq Capital Market or other Eligible Market shall have accepted a plan
of remediation or plan to regain compliance, then so long as such acceptance is in effect, then a delisting or suspension by an
Eligible Market shall not be deemed to exist); (iii) during the Equity Conditions Measuring Period, the Company shall, in all material
respects, have delivered all shares of Common Stock issuable upon conversion of this Note on a timely basis and all other shares
of capital stock required to be delivered by the Company on a timely basis as set forth in the Warrant Agreement; (iv) on each
day during the Equity Conditions Measuring Period, no public announcement of a pending, proposed or intended Fundamental Change
shall have occurred which has not been abandoned, terminated or consummated; (v) on each day during the Equity Conditions Measuring
Period, there shall not have occurred and there shall not exist an Event of Default or an event that with the passage of time or
giving of notice would constitute an Event of Default; (vi) the shares of Common Stock issuable pursuant the event requiring the
satisfaction of the Equity Conditions are duly authorized and listed and eligible for trading without restriction on the Nasdaq
Capital Market or other Eligible Market, (vii) any shares of Common Stock to be issued in connection with the event requiring determination
(or, in connection with a redemption, issuable upon conversion of the Notes to be redeemed in the event requiring this determination
at the Conversion Price then in effect (without regard to any limitations on conversion set forth herein)) may be issued in full
without violating Section 6.04(a) hereof and, assuming solely for the purpose of this clause (vii), that such Holder together with
the other Attribution Parties do not then hold any shares of Common Stock “long” (as defined in Regulation SHO of the
Exchange Act), would not result in a violation of Section 6.04(c) hereof (provided (A) satisfaction of this clause (vii) shall
be measured on a Holder by Holder basis, such that failure of this condition as to one Holder shall not be deemed failure of this
condition as to any other Holder and (B) in connection with a redemption, if the Company elects in its sole discretion to deliver
notice of such redemption to the affected Holder and all other Holders (whether or not affected) in accordance with this Indenture
at least 65 calendar days prior to the applicable date of redemption, the Company may assume for purposes of determining whether
a violation of Section 6.04(c) would occur that, in addition to the assumption regarding not holding shares “long”
noted above, that the Maximum Percentage of every Holder is 9.99%); (viii) such applicable Holder shall not be in possession of
any material, non-public information provided to any of them by the Company, any of its Subsidiaries or any of their respective
affiliates, employees, officers, representatives, agents or the like (provided, satisfaction of this clause (viii) shall be measured
on a Holder by Holder basis, such that failure of this condition as to one Holder shall not be deemed failure of this condition
as to any other Holder) , (ix) on the applicable date of determination (A) no failure to have the applicable Required Minimum Securities
Amount of shares of Common Stock reserved by the Company and available to be issued pursuant to this Indenture shall exist or be
continuing (an “Authorized Share Failure”) and (B) all shares of Common Stock to be issued in connection with
the event requiring this determination (or, in connection with a redemption, issuable conversion of the Notes to be redeemed in
the event requiring this determination at the Conversion Price then in effect (without regard to any limitations on conversion
set forth herein)) may be issued in full without resulting in an Authorized Share Failure; (x) the Company shall have no knowledge
of any fact that would reasonably be expected to cause both (1) any Registration Statement required to be filed pursuant to the
Registration Rights Agreement to not be effective or the prospectus contained therein to not be available for the resale of the
applicable Required Minimum Securities Amount of shares of Common Stock in accordance with the terms of the Registration Rights
Agreement and (2) any shares of Common Stock issuable upon conversion of the Notes or exercise of the Warrants (without regard
to any limitations on conversion or exercise with respect thereto) to not be eligible for sale pursuant to Rule 144 without the
need for registration under any applicable federal or state securities laws (in each case, disregarding any limitation on conversion
of the Notes, other issuance of securities with respect to the Notes and exercise of the Warrants) or the Company to not be in
compliance with the requirements of Rule 144(c)(1), including, without limitation, satisfying the current public information requirement
under Rule 144(c) and (xi) no Volume Failure Exists.


 






    	 	6	 



     


    

 


“Equity Conditions Failure”
means that as of any given date of determination, the Equity Conditions have not been satisfied (or waived in writing by the Holders
to the extent required by Article 13).


 


“Equity Conditions Measuring Period”
has the meaning in the definition “Equity Conditions” above.


 


“Event” has the meaning
specified in the Registration Rights Agreement.


 


“Event Date” has the
meaning specified in the Registration Rights Agreement.


 


“Event of Default” has
the meaning specified in Section 8.01.


 


“Ex-Dividend Date” means
the first date on which the shares of Common Stock trade on the applicable exchange or in the applicable market, regular way, without
the right to receive the issuance, dividend or distribution in question, from the Company or, if applicable, from the seller of
the shares of Common Stock on such exchange or market (in the form of due bills or otherwise) as determined by such exchange or
market.


 


“Exchange Act” means
the U.S. Securities Exchange Act of 1934, as amended.


 


“Exchange Cap” has the
meaning specified in Section 6.04.


 


“Exchange Cap Share Cancellation
Amount” has the meaning specified in Section 2.03.


 


“Exchange Cap Allocation Increase”
has the meaning specified in Section 2.03.


 


“Exchange Cap/Underauthorized Shares”
has the meaning specified in Section 6.04.


 


“Exchange Cap Share Cancellation
Amount” has the meaning specified in Section 6.04.


 


“Exchange Cap Allocation Increase”
has the meaning specified in Section 6.04.


 


“Freely Tradable” means,
with respect to any Notes, that such Notes are eligible to be sold by a Person who is not an Affiliate of the Company (within the
meaning of Rule 144) and has not been an Affiliate of the Company (within the meaning of Rule 144) during the immediately preceding
three months either (1) without any volume or manner of sale restrictions under the Securities Act or (2) because a registration
statement under the Securities Act with respect to the resale of such Notes has been declared effective under the Securities Act.


 






    	 	7	 



     


    

 


“Free Transferability Certificate”
means a certificate substantially in the form of Exhibit B.


 


“Fundamental Change”
means the occurrence of any of the following events at any time after the Notes are originally issued:


 


(1)         a
“person” or “group” within the meaning of Section 13(d) of the Exchange Act other than the Company, the
Company’s Subsidiaries or the Company’s or the Company’s Subsidiaries’ employee benefit plans files a Schedule
TO or any schedule, form or report under the Exchange Act disclosing that such person or group has become the direct or indirect
“beneficial owner,” as defined in Rule 13d-3 under the Exchange Act, of the Company’s common equity representing
more than 50% of the voting power of all outstanding classes of the Company’s common equity entitled to vote generally in
the election of the Company’s directors;


 


(2)         consummation
of (A) any share exchange, consolidation or merger involving the Company pursuant to which the Common Stock will be converted into
cash, securities or other property or (B) any sale, lease or other transfer in one transaction or a series of transactions of all
or substantially all of the consolidated assets of the Company and the Company’s Subsidiaries, taken as a whole, to any person
other than one or more of the Company’s Subsidiaries; provided, however, that a share exchange, consolidation
or merger transaction described in clause (A) above in which the holders of more than 50% of all shares of Common Stock entitled
to vote generally in the election of the Company’s directors immediately prior to such transaction own, directly or indirectly,
more than 50% of all shares of Common Stock entitled to vote generally in the election of the directors of the continuing or surviving
entity or the parent entity thereof immediately after such transaction in substantially the same proportions (relative to each
other) as such ownership immediately prior to such transaction will not, in either case, be a Fundamental Change;


 


(3)         the
Company’s shareholders approve any plan or proposal for the liquidation or dissolution of the Company; or


 


(4)         the
Common Stock (or other Capital Stock into which the Notes are then convertible pursuant to the terms of this Indenture) ceases
to be listed on any of The New York Stock Exchange, The NASDAQ Global Select Market, The NASDAQ Global Market, The NASDAQ Capital
Market or The NYSE MKT (or their respective successors) (each, an “Eligible Market”).


 


If a transaction occurs that constitutes
a Fundamental Change under both clause (1) and clause (2) above, such transaction will be treated solely as a Fundamental Change
under clause (2) above.


 


“Fundamental Change Company Notice”
has the meaning specified in Section 7.01(b).


 


“Fundamental Change Purchase Date”
has the meaning specified in Section 7.01(a).


 






    	 	8	 



     


    

 


“Fundamental Change Purchase Notice”
has the meaning specified in Section 7.01(a)(i).


 


“Fundamental Change Purchase Price”
has the meaning specified in Section 7.01(a).


 


“GAAP” means generally
accepted accounting principles set forth in the opinions and pronouncements of the Accounting Principles Board of the American
Institute of Certified Public Accountants and statements and pronouncements of the Financial Accounting Standards Board or in such
other statements by such other entity as have been approved by a significant segment of the accounting profession, in each case,
as in effect in the United States on the date hereof.


 


“Global Note” means a
Note in global form registered in the Register in the name of a Depositary or a nominee thereof.


 


“Guarantors” means any
Significant Subsidiary of the Company that executes a Note Guarantee in accordance with the provisions of this Indenture, and their
respective successors and assigns, in each case, until the Note Guarantee of such Person has been released in accordance with the
provisions of this Indenture.


 


“Holder” means a Person
in whose name a Note is registered in the Register.


 


“Indenture” means this
instrument as originally executed or as it may from time to time be supplemented or amended by one or more indentures supplemental
hereto entered into pursuant to the applicable provisions hereof, including, for all purposes of this instrument and any such supplemental
indenture.


 


“Initial Purchaser Agreement”
means the Initial Purchaser Agreement, dated September 23, 2016, entered into by the Company, the Guarantors and the Purchaser
in connection with the sale of the Notes.


 


“Interest Payment Date”
means each September 15 and March 15 of each year, beginning March 15, 2017.


 


“Issue Date” means the
date the Notes are originally issued as set forth on the face of the Note under this Indenture.


 


“Last Reported Sale Price”
means, on any Trading Day, the closing sale price per share of Common Stock (or if no closing sale price is reported, the average
of the bid and ask prices or, if more than one in either case, the average of the average bid and/or the average ask prices) of
the Common Stock on that Trading Day as reported in composite transactions for the principal United States national or regional
securities exchange on which the Common Stock is traded. If the Common Stock is not listed for trading on a United States national
or regional securities exchange on the relevant Trading Day, the “Last Reported Sale Price” will be the last quoted
bid price per share of Common Stock in the over-the-counter market on the relevant Trading Day as reported by OTC Markets Group
Inc. or similar organization selected by the Company. If the Common Stock is not so quoted, the “Last Reported Sale Price”
will be the average of the mid-point of the last bid and ask prices per share of Common Stock on the relevant date from a nationally
recognized independent investment banking firm selected by the Company for this purpose.


 






    	 	9	 



     


    

 


“Legal Holiday” is a
Saturday, a Sunday or other day on which the Federal Reserve Bank of New York or the Corporate Trust Office is authorized or required
by law or executive order to close or be closed.


 


“Maturity Date” means
September 23, 2020.


 


“Make-Whole Fundamental Change”
means any transaction or event that would constitute a Fundamental Change pursuant to clause (1), clause (2) or clause (4) of the
definition thereof (determined after giving effect to any exceptions or exclusions to such definition, but without regard to the
proviso in clause (2) of the definition thereof).


 


“Merger Event” has the
meaning specified in Section 6.06.


 


“Note Guarantee” means
the guarantee by each Guarantor of the Company’s obligations under this Indenture and the Notes, executed pursuant to the
provisions of this Indenture.


 


“Notes” has the meaning
specified in the first paragraph of the Recitals of the Company, and includes any Note or Notes, as the case may be, authenticated
and delivered under this Indenture, including any Global Note.


 


“Notice of Default” means
written notice provided to the Company by the Trustee or to the Company and the Trustee by the Holders of not less than 25% in
aggregate Principal Amount of Notes outstanding of a Default by the Company, which notice must specify the Default, demand that
it be remedied and expressly state that such notice is a “Notice of Default.”


 


“Offering Memorandum”
means the preliminary offering memorandum dated September 23, 2016, relating to the offering and sale of the Notes.


 


“Officers’ Certificate”
means a certificate signed (a) by the Chief Executive Officer, the President, the Chief Financial Officer or any of the Vice Presidents
of the Company, and (b) by the Treasurer, any Assistant Treasurer, the Secretary, any Assistant Secretary or any of the Vice Presidents
of the Company, and delivered to the Trustee. An Officers’ Certificate provided under Section 4.12 of this Indenture shall
be signed by the Principal Executive, Principal Financial or Principal Accounting Officer.


 


“Open of Business” means
9:00 a.m., New York City time.


 


“Opinion of Counsel”
means a written opinion of counsel, who may be external or in-house counsel for the Company and who is reasonably acceptable to
the Trustee.


 


“outstanding” when used
with reference to Notes, shall, subject to the provisions of Section 14.03, mean, as of any particular time, all Notes authenticated
and delivered by the Trustee under this Indenture, except:


 






    	 	10	 



     


    

 


(i)          Notes
theretofore canceled by the Trustee or accepted by the Trustee for cancellation;


 


(ii)         Notes,
or portions thereof, that have become due and payable and in respect of which monies in the necessary amount shall have been deposited
in trust with the Trustee or with any Paying Agent (other than the Company) or shall have been set aside and segregated in trust
by the Company (if the Company shall act as its own Paying Agent);


 


(iii)        Notes
that have been paid pursuant to Section 3.09 and Notes in lieu of which, or in substitution for which, other Notes shall have been
authenticated and delivered pursuant to the terms of Section 3.09 unless proof satisfactory to the Trustee is presented that any
such Notes are held by protected purchasers in whose hands such Notes are valid obligations of the Company; and


 


(iv)        Notes
converted pursuant to Article 6 and required to be cancelled pursuant to Section 3.12.


 


“Paying Agent” means
any Person (including the Company) authorized by the Company to pay the Principal Amount of, interest on, including Additional
Interest, or the Fundamental Change Purchase Price of, any Notes on behalf of the Company. U.S. Bank, National Association shall
initially be the Paying Agent.


 


“Permitted Debt” means:


 


(a)          the
Notes and any guarantees thereof, including the Note Guarantees;


 


(b)          indebtedness
already existing in an acquired entity at the time of acquisition of such entity by the Company or any of its Subsidiaries, so
long as such debt was not incurred in order to effect such acquisition, and neither the Company nor any of its Subsidiaries shall
guarantee such debt following such acquisition;


 


(c)          any
unsecured guarantees by the Company or any of its Subsidiaries of the Company’s indebtedness or indebtedness of any of the
Company’s Subsidiaries not otherwise prohibited under this Indenture;


 


(d)          indebtedness
in respect of capital leases and synthetic lease obligations;


 


(e)          unsecured
intercompany indebtedness among the Company and any of its Subsidiaries, or between two or more of the Subsidiaries of the Company;


 


(f)          current
liabilities which are incurred in the ordinary course of business and which are not incurred through the borrowing of money, including
credit incurred in the ordinary course of business with corporate credit cards by the Company and its Subsidiaries;


 


(g)          indebtedness
incurred as a result of endorsing negotiable instruments received in the ordinary course of business;


 






    	 	11	 



     


    

 


(h)          purchase
money indebtedness (i) for equipment acquired or held by the Company or its Subsidiaries incurred for financing the acquisition
of the equipment, or (ii) existing on equipment when acquired;


 


(i)          a
letter of credit issued by Silicon Valley Bank used to satisfy a security deposit to the landlord of the Company’s office
in Australia, in the aggregate amount of not more than $350,000; and


 


(j)          extensions,
refinancings and renewals of indebtedness set forth above in this definition.


 


“Person” means any individual,
corporation, partnership, limited liability company, joint venture, trust, unincorporated organization or government or any agency
or political subdivision thereof.


 


“Physical Notes” means
certificated Notes in registered form issued in minimum denominations of integral $1,000 Principal Amount and integral multiples
of $1,000 in excess thereof.


 


“Principal Amount” of
a Note means the principal amount as set forth on the face of the Note.


 


“Principal Market” means,
as of the date hereof, the Nasdaq Capital Market or from time to time the principal national securities exchange or over-the-counter
market where the Common Stock is then traded.


 


“Publicly Traded Securities”
means shares of Capital Stock traded on an Eligible Market, or, with respect to a transaction that otherwise would be a Fundamental
Change, which will be so traded when issued or exchanged in connection with such transaction.


 


“Purchaser” means BTIG,
LLC, the initial purchaser of the Notes pursuant to the Initial Purchaser Agreement.


 


“Qualified Financing”
means the sale by the Company of shares of Common Stock or securities convertible into, or exercisable or exchangeable for, Common
Stock, provided that a Qualified Financing shall not include any of the following issuances by the Company: (i) shares of
Common Stock or options to purchase Common Stock issued to directors, officers, employees of or consultants to the Company or its
Subsidiaries for services rendered to the Company in their capacity as such pursuant to an Approved Stock Plan (as defined above),
provided that the exercise price of any such options is not lowered, none of such options are amended to increase the number of
shares issuable thereunder and none of the terms or conditions of any such options are otherwise materially changed in any manner
that adversely affects any of the Holders’ interests in the Notes; (ii) shares of Common Stock issued upon the conversion
or exercise of convertible securities or warrants (other than options to purchase Common Stock issued pursuant to an Approved Stock
Plan that are covered by clause (i) above) issued prior to the Issue Date, provided that the conversion price of any such convertible
securities or warrants (other than options to purchase Common Stock issued pursuant to an Approved Stock Plan that are covered
by clause (i) above) is not lowered other than pursuant to anti-dilution (including price-based anti-dilution) features that are
currently in existence as of the Issue Date and are not amended after the Issue Date, none of such convertible securities or warrants
(other than options to purchase Common Stock issued pursuant to an Approved Stock Plan that are covered by clause (i) above) are
amended to increase the number of shares issuable thereunder and none of the terms or conditions of any such convertible securities
or warrants (other than options to purchase Common Stock issued pursuant to an Approved Stock Plan that are covered by clause (i)
above) are otherwise materially changed in any manner that adversely affects any of the Holders’ interests in the Notes;
(iii) the shares of Common Stock issuable upon conversion of the Notes or otherwise pursuant to the terms of the Notes; (iv) the
shares of Common Stock issuable upon exercise of the Warrants; and (v) shares of Common Stock, options, warrants and convertible
securities issued pursuant to equipment purchases, strategic mergers or acquisitions of other assets or businesses, or strategic
licensing or development transactions; provided that (x) the primary purpose of such issuance is not to raise capital as determined
in good faith by the Board of Directors of the Company, (y) the purchaser or acquirer of such shares of Common Stock in such issuance
solely consists of either (1) the actual participants in such strategic licensing or development transactions, (2) the actual owners
of such assets or securities acquired in such merger or acquisition or (3) the shareholders, partners or members of the foregoing
Persons, and (z) the number or amount (as the case may be) of such shares of Common Stock issued to such Person by the Company
shall not be disproportionate to such Person’s actual participation in such strategic licensing or development transactions
or ownership of such assets or securities to be acquired by the Company (as applicable).


 






    	 	12	 



     


    

 


“Qualified Institutional Buyer”
shall have the meaning specified in Rule 144A.


 


“Reference Property”
has the meaning specified in Section 6.06.


 


“Redemption Date” shall
have the meaning specified in Section 5.02(a).


 


“Redemption Notice” shall
have the meaning specified in Section 5.02(a).


 


“Redemption Price” means,
for any Notes to be redeemed pursuant to Section 5.01, 100% of the principal amount of such Notes, plus accrued and unpaid
interest, if any, to, but excluding, the Redemption Date (unless the Redemption Date falls after a Regular Record Date but on or
prior to the immediately succeeding Interest Payment Date, in which case interest accrued to the Interest Payment Date will be
paid to Holders of record of such Notes on such Regular Record Date, and the “Redemption Price” will be equal
to 100% of the principal amount of such Notes), plus an additional amount equal to the same Early Conversion Payment (if
any) that would have been due with respect to the Notes to be redeemed pursuant to Section 5.01 had they been converted on the
Redemption Date and an Early Conversion Payment had been due with respect to such hypothetical conversion, with the additional
amount under this clause being subject to the same terms and conditions applicable (including the rights and conditions on the
Company’s election to pay in Common Stock, and to the extent so paid, a “Redemption/Early Exercise Share Payment”))
had an Early Conversion Payment been made in connection with an actual conversion (for added clarity, the maximum amount
payable under this clause is equal to one year of interest that would have been due with respect to the Notes).


 


“Register” and “Registrar”
have the respective meanings specified in Section 3.06.


 






    	 	13	 



     


    

 


“Registrable Securities”
has the meaning specified in the Registration Rights Agreement.


 


“Registration Default”
has the meaning specified in Section 2.03.


 


“Registration Rights Agreement”
means the Registration Rights Agreement, dated as of September 28, 2016, among the Company, the Guarantors and the Purchaser, as
such agreement may be amended, modified or supplemented from time to time.


 


“Registration Statement”
means, with respect to any Registrable Securities, as defined in the Registration Rights Agreement, including in connection with
an Early Conversion Payment, the “Registration Statement” referenced in the Registration Rights Agreement applicable
to such shares.


 


“Regular Record Date”
means, with respect to the payment of interest on the Notes (including Additional Interest, if any) Close of Business on March
1 or September 1, as the case may be, immediately preceding the relevant Interest Payment Date.


 


“Required Minimum Securities Amount”
 has the meaning in the definition “Equity Conditions” above.


 


“Resale Restriction Termination
Date” has the meaning specified in Section 3.08(b)(ii).


 


“Restricted Global Note”
has the meaning specified in Section 3.08(b)(i).


 


“Restricted Note” has
the meaning specified in Section 3.07(a)(i).


 


“Restricted Payment”
means:


 


(a)          any
dividend or other distribution declared or paid on any of the Company’s Capital Stock (other than dividends or distributions
payable solely in Capital Stock), subject to clause (b) of this definition;


 


(b)          any
payment to purchase, redeem or otherwise acquire or retire for value any of the Company’s Capital Stock (other than the repurchase
of unvested shares held by employees, former employees or consultants at a price not greater than the price paid for the shares
by such employees, former employees or consultants); and


 


(c)          any
payment to purchase, repay, redeem, or otherwise acquire or retire for value any of indebtedness for borrowed money incurred by
the Company or any of its Subsidiaries that is subordinated in right of payment to the Notes (other than with the proceeds of indebtedness
that is incurred substantially concurrently with such purchase, repayment, redemption, acquisition or retirement and that is subordinated
in right of payment to the Notes on terms no less favorable to the Holders than the indebtedness being purchased, repaid, redeemed,
acquired or retired).


 


“Restricted Stock” has
the meaning specified in Section 3.07(b)(i).


 






    	 	14	 



     


    

 


“Restricted Stock Legend”
means a legend substantially in the form set forth in Exhibit A hereto.


 


“Rule 144” means Rule
144 under the Securities Act (including any successor rule thereto), as the same may be amended from time to time.


 


“Rule 144A” means Rule
144A under the Securities Act (including any successor rule thereto), as the same may be amended from time to time.


 


“Rule 144A Information”
has the meaning specified in the Notes.


 


“Secured Debt” means
indebtedness for borrowed money incurred by the Company or any of its Subsidiaries (or guarantees thereof by the Company or any
of its Subsidiaries), that is secured by a lien or security interest on the Company’s assets or the assets of any of the
Company’s Subsidiaries. “Secured Debt” shall not include trade accounts and accrued expenses payable (including
accrued revenue share and accrued license fees), obligations in respect of licenses and operating leases, payroll liabilities,
deferred compensation and any purchase price adjustments, royalties, earn-outs, milestone payments, contingent payments of a similar
nature in connection with any acquisition, license or collaboration agreement, and obligations for any taxes, fees, assessments
or other governmental charges or levies being contesting in good faith .


 


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


 


“Share Price” has the
meaning specified in Section 6.08(c).


 


“Significant Subsidiary”
shall have the meaning given to such term in Rule 1-02(w) of Regulation S-X under the Exchange Act as in effect on the Issue Date
of the Notes.


 


“Spin-Off” has the meaning
specified in Section 6.05(d).


 


“Subsidiary” means, with
respect to any Person, any corporation, association, partnership or other business entity of which more than 50% of the total voting
power of shares of Capital Stock or other interests (including partnership interests) entitled (without regard to the occurrence
of any contingency) to vote in the election of directors, managers, general partners or trustees thereof is at the time owned or
controlled, directly or indirectly, by (i) such Person; (ii) such Person and one or more Subsidiaries of such Person; or (iii)
one or more Subsidiaries of such Person.


 


“Successor Company” has
the meaning specified in Section 9.01.


 


“Trading Day” means any
day on which the Company’s Common Stock is traded on the NASDAQ Capital Market, or, if the NASDAQ Capital Market is not the
principal trading market for the Common Stock, then on the principal securities exchange or securities market on which its Common
Stock is then traded; provided that “Trading Day” shall not include any day on which the Company’s Common
Stock is scheduled to trade on such exchange or market for less than 4.5 hours or any day that its Common Stock is suspended from
trading during the final hour of trading on such exchange or market (or if such exchange or market does not designate in advance
the closing time of trading on such exchange or market, then during the hour ending at 4:00:00 p.m., New York time).


 






    	 	15	 



     


    

 


“Transfer Agent” means
American Stock Transfer in its capacity as transfer agent and registrar of the Common Stock and any successor Transfer Agent.


 


“Trigger Event” has the
meaning specified in Section 6.05(d).


 


“Trustee” means the Person
named as the “Trustee” in the first paragraph of this Indenture until a successor Trustee shall have become
such pursuant to the applicable provisions of this Indenture, and thereafter “Trustee” shall mean such successor
Trustee.


 


“Trust Indenture Act”
means the Trust Indenture Act of 1939, as amended, as it was in force at the date of execution of this Indenture; provided,
however, that in the event the Trust Indenture Act of 1939 is amended after the date hereof, the term “Trust Indenture
Act” shall mean, to the extent required by such amendment, the Trust Indenture Act of 1939, as so amended.


 


“Trust Officer” means
any officer of the Trustee within the Corporate Trust Office of the Trustee with direct responsibility for the administration of
this Indenture and also, with respect to a particular matter relating to this Indenture, any other officer of the Trustee to whom
such matter is referred because of such officer’s knowledge and familiarity with the particular subject.


 


“U.S.” means the United
States of America.


 


“Unsecured Debt” means
(i) indebtedness for borrowed money incurred by the Company any of its Subsidiaries (or guarantees thereof by the Company or any
of its Subsidiaries), that is unsecured and is pari passu or senior in right of payment to the Notes, and (ii) preferred
stock issued by the Company that is mandatorily redeemable, or redeemable at the option of the holder, on a date that is prior
to the Maturity Date. “Unsecured Debt” shall not include trade accounts and accrued expenses payable (including accrued
revenue share and accrued license fees), obligations in respect of licenses and operating leases, payroll liabilities, deferred
compensation and any purchase price adjustments, royalties, earn-outs, milestone payments, contingent payments of a similar nature
in connection with any acquisition, license or collaboration agreement, and obligations for any taxes, fees, assessments or other
governmental charges or levies being contested in good faith.


 


“Valuation Period” has
the meaning set forth in Section 6.05(d).


 


“Vice President” means
any vice president, whether or not designated by a number or a word or words added before or after the title “vice president.”


 


“Volume Failure” means,
with respect to a particular date of determination, the aggregate daily dollar trading volume (as reported on Bloomberg) of the
Common Stock on the Principal Market on any Trading Day during the five (5) Trading Day period ending on the Trading Day immediately
preceding such date of determination (such period, the “Volume Failure Measuring Period”), is less than $400,000 (as
adjusted for any stock splits, stock dividends, stock combinations, recapitalizations or other similar transactions occurring after
the Issue Date). All such determinations to be appropriately adjusted for any stock splits, stock dividends, stock combinations,
recapitalizations or other similar transactions during such Volume Failure Measuring Period.


 






    	 	16	 



     


    

 


“VWAP Market Disruption Event”
means (a) the relevant stock exchange fails to open for trading or (b) the occurrence or existence prior to 1:00 p.m., New York
City time, on any scheduled Trading Day for the Common Stock for more than a one half-hour period in the aggregate during regular
trading hours, of any suspension or limitation imposed on trading (by reason of movements in price exceeding limits permitted by
the relevant stock exchange or otherwise) in the Common Stock or in any options contracts or future contracts relating to the Common
Stock.


 


“VWAP Trading Day” means
(a) a day on which (i) there is no VWAP Market Disruption Event and (ii) trading in the Common Stock generally occurs on the relevant
stock exchange or (b) if the Common Stock (or any other security for which a Daily VWAP must be determined) is not listed or traded
on any exchange or other market, a Business Day.


 


“Warrants” means those
warrants issued pursuant to the Warrant Agreement.


 


“Warrant Agreement” means
that certain Warrant Agreement of even date herewith between the Company and US Bank National Association as warrant agent.


 


Section 1.02         Compliance
Certificates and Opinions. Upon any application or request by the Company to the Trustee to take any action under any provision
of this Indenture, the Company shall furnish to the Trustee such certificates and opinions as may be required pursuant to Section
14.02, including each of (a) an Officers’ Certificate stating that, in the opinion of the signers, all conditions precedent,
if any, provided for in this Indenture relating to the proposed action have been complied with; and (b) an Opinion of Counsel stating
that all such conditions precedent relating to the proposed action have been complied with.


 


Every certificate or opinion with respect
to compliance with a condition or covenant provided for in this Indenture shall include:


 


(a)          a
statement that each individual signing such certificate or opinion has read such covenant or condition and the definitions herein
relating thereto;


 


(b)          a
brief statement as to the nature and scope of the examination or investigation upon which the statements or opinions contained
in such certificate or opinion are based;


 


(c)          a
statement that, in the opinion of each such individual, such individual has made such examination or investigation as is necessary
to enable such individual to express an informed opinion as to whether or not such covenant or condition has been complied with;
and


 


(d)          a
statement as to whether, in the opinion of each such individual, such condition or covenant has been complied with.


 






    	 	17	 



     


    

 


In giving such Opinion of Counsel, counsel
may rely as to factual matters on an Officers’ Certificate or certificates of public officials.


 


Section 1.03         Form
of Documents Delivered to Trustee. In any case where several matters are required to be certified by, or covered by an opinion
of, any specified Person, it is not necessary that all such matters be certified by, or covered by the opinion of, only one such
Person, or that they be so certified or covered by only one document, but one such Person may certify or give an opinion with respect
to some matters and one or more other such Persons as to other matters, and any such Person may certify or give an opinion as to
such matters in one or several documents.


 


Any certificate or opinion of an officer
of the Company may be based, insofar as it relates to legal matters, upon a certificate or opinion of, or representations by, counsel,
unless such officer knows, or in the exercise of reasonable care should know, that the certificate or opinion or representations
with respect to the matters upon which his certificate or opinion is based are erroneous. Any such certificate or Opinion of Counsel
may be based, insofar as it relates to factual matters, upon a certificate or opinion of, or representations by, an officer or
officers of the Company stating that the information with respect to such factual matters is in the possession of the Company.


 


Where any Person is required to make, give
or execute two or more applications, requests, consents, certificates, statements, opinions or other instruments under this Indenture,
they may, but need not, be consolidated and form one instrument.


 


Section 1.04         Acts
of Holders; Record Dates.


 


(a)          Subject
to Section 4.13, any request, demand, authorization, direction, notice, consent, waiver or other action provided by this Indenture
to be given or taken by Holders may be embodied in and evidenced by one or more instruments of substantially similar tenor signed
by such Holders in person or by their agents duly appointed in writing and, except as herein otherwise expressly provided, such
action shall become effective when such instrument or instruments are delivered to the Trustee and, where it is hereby expressly
required, to the Company. Such instrument or instruments (and the action embodied therein and evidenced thereby) are herein sometimes
referred to as an “Act” of the Holders signing such instrument or instruments. Proof of execution of any such
instrument or of a writing appointing any such agent shall be sufficient for any purpose of this Indenture and (subject to Section
10.01) conclusive in favor of the Trustee and the Company, if made in the manner provided in this Section.


 


(b)          The
fact and date of the execution by any Person of any such instrument or writing may be proved by the affidavit of a witness of such
execution or by a certificate of a notary public or other officer authorized by law to take acknowledgments of deeds, certifying
that the individual signing such instrument or writing acknowledged to him the execution thereof. Where such execution is by a
signer acting in a capacity other than his individual capacity, such certificate or affidavit shall also constitute sufficient
proof of his authority. The fact and date of the execution of any such instrument or writing, or the authority of the Person executing
the same, may also be proved in any other manner which the Trustee reasonably deems sufficient.


 






    	 	18	 



     


    

 


(c)          The
Company may, in the circumstances permitted by this Indenture, fix any day as the record date for the purpose of determining the
Holders entitled to give or take any request, demand, authorization, direction, notice, consent, waiver or other action, or to
vote on any action, authorized or permitted to be given or taken by Holders. If not set by the Company prior to the first solicitation
of a Holder made by any Person in respect of any such action, or, in the case of any such vote, prior to such vote, the record
date for any such action or vote shall be the 30th day (or, if later, the date of the most recent list of Holders required to be
provided pursuant to Section 11.01) prior to such first solicitation or vote, as the case may be. With regard to any record date,
only the Holders on such date (or their duly designated proxies) shall be entitled to give or take, or vote on, the relevant action.


 


(d)          The
ownership of Notes shall be proved by the Register.


 


(e)          Any
request, demand, authorization, direction, notice, consent (or deemed consent pursuant to Section 4.13), waiver or other Act of
the Holder of any Note shall bind every future Holder of the same Note and the Holder of every Note issued upon the registration
of transfer thereof or in exchange therefor or in lieu thereof in respect of anything done, omitted or suffered to be done by the
Trustee or the Company in reliance thereon, whether or not notation of such action is made upon such Note.


 


Section 1.05         Notices,
Etc., to Trustee and Company. Any request, demand, authorization, direction, notice, consent, waiver or Act of Holders or other
document provided or permitted by this Indenture to be made upon, given or furnished to, or filed with:


 


(i)          the
Trustee by any Holder or by the Company shall be sufficient for every purpose hereunder if actually received by the Trustee at
its applicable Corporate Trust Office; or


 


(ii)         the
Company by the Trustee or by any Holder shall be sufficient for every purpose hereunder (unless otherwise herein expressly provided)
if in writing and either (a) emailed to the following email address without a “bounce back” or rejection notice having
been received, with the subject line stating in substance “FORMAL NOTICE UNDER DIGITAL TURBINE INDENTURE”: indentureandwarrantnotices@digitalturbine.com
or (b) mailed, first-class postage prepaid, to the Company addressed to it at the address of its principal office specified in
the first paragraph of this instrument, with a copy to the address specified in Section 14.01, or at any other address previously
furnished in writing to the Trustee by the Company, Attention: Chief Financial Officer.


 


Section 1.06         Notice
to Holders; Waiver. Where this Indenture provides for notice to Holders of any event, such notice shall be sufficiently given
(unless otherwise herein expressly provided) if in writing and mailed, first-class postage prepaid, to each Holder affected by
such event, at such Holder’s address as it appears in the Register, not later than the latest date (if any), and not earlier
than the earliest date (if any), prescribed for the giving of such notice. In any case where notice to Holders is given by mail,
neither the failure to mail such notice, nor any defect in any notice so mailed, to any particular Holder shall affect the sufficiency
of such notice with respect to other Holders. Where this Indenture provides for notice in any manner, such notice may be waived
in writing by the Person entitled to receive such notice, either before or after the event, and such waiver shall be the equivalent
of such notice. Waivers of notice by Holders shall be filed with the Trustee, but such filing shall not be a condition precedent
to the validity of any action taken in reliance upon such waiver.


 






    	 	19	 



     


    

 


In case by reason of the suspension of regular
mail service or by reason of any other cause it shall be impracticable to give such notice by mail, then such notification as shall
be made with the approval of the Trustee shall constitute a sufficient notification for every purpose hereunder.


 


Whenever under this Indenture the Trustee
is required to provide any notice by mail, in all cases the Trustee may alternatively provide notice by overnight courier, by facsimile,
with confirmation of transmission, or by electronic means.


 


Notwithstanding any other provision of this
Indenture or any Note, where this Indenture or any Note provides for notice of any event (including any notice of redemption or
purchase) to a Holder of a Global Note (whether by mail or otherwise), such notice shall be sufficiently given if given to the
Depositary for such Note (or its designee) pursuant to the standing instructions from such Depositary.


 


Section 1.07         Effect
of Headings and Table of Contents. The Article and Section headings herein and the Table of Contents are for convenience only
and shall not affect the construction hereof, and all Article and Section references are to Articles and Sections, respectively,
of this Indenture unless otherwise expressly stated.


 


Section 1.08         Successors
and Assigns. All covenants and agreements in this Indenture by the Company and the Guarantors shall bind their respective successors
and assigns, whether so expressed or not.


 


Section 1.09         Severability
Clause. In case any provision in this Indenture or in the Notes shall be invalid, illegal or unenforceable, the validity, legality
and enforceability of the remaining provisions shall not in any way be affected or impaired thereby.


 


Section 1.10         Benefits
of Indenture. Nothing in this Indenture or in the Notes, express or implied, shall give to any Person, other than the parties
hereto and their respective successors hereunder and the Holders of Notes, any benefit or any legal or equitable right, remedy
or claim under this Indenture


 


Section 1.11         No
Recourse Against Others. No director, officer, employee, shareholder or Affiliate of the Company from time to time shall have
any liability for any obligations of the Company under the Notes or this Indenture. Each Holder by accepting a Note waives and
releases such liability.


 


Article
2.

SECURITY FORMS


 


Section 2.01         Forms
Generally. The Notes and the Trustee’s certificates of authentication shall be in substantially the forms set forth in
this Article, with such appropriate insertions, omissions, substitutions and other variations as are required or permitted by this
Indenture, and may have such letters, numbers or other marks of identification and such legends or endorsements placed thereon
as may be required to comply with the rules of any securities exchange or Depositary therefor, the Code and regulations thereunder,
or as may, consistently herewith, be determined by the officers executing such Notes, as evidenced by their execution thereof.


 






    	 	20	 



     


    

 


The Notes (other than the Affiliate Notes)
shall initially be issued in the form of permanent Global Notes in registered form in substantially the form set forth in this
Article. The aggregate Principal Amount of the Global Notes may from time to time be increased or decreased by adjustments made
on the records of the Trustee, as custodian for the Depositary, as hereinafter provided.


 


All Affiliate Notes shall be issued in the
form of one or more Physical Notes.


 


Section 2.02         Form
of Face of Note.


 


[Include the following legend for Global
Notes only (the “Global Notes Legend”):]


 


[NO AFFILIATE (AS DEFINED IN RULE 144
UNDER THE SECURITIES ACT) OF THE COMPANY OR PERSON THAT HAS BEEN AN AFFILIATE (AS DEFINED IN RULE 144 UNDER THE SECURITIES ACT)
OF THE COMPANY DURING THE IMMEDIATELY PRECEDING THREE MONTHS MAY RESELL THIS NOTE OR A BENEFICIAL INTEREST HEREIN.


 


THIS SECURITY IS A GLOBAL SECURITY WITHIN
THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITARY OR A NOMINEE THEREOF. THIS SECURITY
MAY NOT BE EXCHANGED IN WHOLE OR IN PART FOR A SECURITY REGISTERED, AND NO TRANSFER OF THIS SECURITY IN WHOLE OR IN PART MAY BE
REGISTERED, IN THE NAME OF ANY PERSON OTHER THAN SUCH DEPOSITARY OR A NOMINEE THEREOF, EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED
IN THE INDENTURE.


 


UNLESS THIS CERTIFICATE IS PRESENTED
BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (“DTC”), A NEW YORK CORPORATION, TO THE COMPANY OR
ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE &
CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR
TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE
OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL IN AS MUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.]


 


[Include the following legend on all
Notes that are Restricted Notes (the “Restricted Notes Legend”):]


 






    	 	21	 



     


    

 


[THIS SECURITY, THE ATTACHED GUARANTEE
AND THE SHARES OF COMMON STOCK ISSUABLE UPON CONVERSION OF THIS SECURITY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933,
AS AMENDED (THE “SECURITIES ACT”), AND MAY NOT BE OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED EXCEPT IN ACCORDANCE
WITH THE FOLLOWING SENTENCE. BY ITS ACQUISITION HEREOF OR OF A BENEFICIAL INTEREST HEREIN, THE ACQUIRER:


 


(1)         REPRESENTS
THAT IT AND ANY ACCOUNT FOR WHICH IT IS ACTING IS A “QUALIFIED INSTITUTIONAL BUYER” (WITHIN THE MEANING OF RULE 144A
UNDER THE SECURITIES ACT) AND THAT IT EXERCISES SOLE INVESTMENT DISCRETION WITH RESPECT TO EACH SUCH ACCOUNT, AND


 


(2)         AGREES
FOR THE BENEFIT OF DIGITAL TURBINE, INC. (THE “COMPANY”) THAT IT WILL NOT OFFER, SELL, PLEDGE OR OTHERWISE TRANSFER
THIS SECURITY OR ANY BENEFICIAL INTEREST HEREIN PRIOR TO THE RESALE RESTRICTION TERMINATION DATE (AS DEFINED BELOW), EXCEPT:


 


(A)         TO
THE COMPANY OR ANY SUBSIDIARY THEREOF, OR


 


(B)         PURSUANT
TO A REGISTRATION STATEMENT WHICH HAS BECOME EFFECTIVE UNDER THE SECURITIES ACT, OR


 


(C)         TO
A QUALIFIED INSTITUTIONAL BUYER IN COMPLIANCE WITH RULE 144A UNDER THE SECURITIES ACT, OR


 


(D)         PURSUANT
TO AN EXEMPTION FROM REGISTRATION PROVIDED BY RULE 144 UNDER THE SECURITIES ACT OR ANY OTHER AVAILABLE EXEMPTION FROM THE REGISTRATION
REQUIREMENTS OF THE SECURITIES ACT.


 


THE “RESALE RESTRICTION TERMINATION
DATE” MEANS THE LATER OF: (1) THE DATE THAT A REGISTRATION STATEMENT UNDER THE SECURITIES ACT WITH RESPECT TO THIS SECURITY
AND BENEFICIAL INTERESTS HEREIN HAS BECOME EFFECTIVE; AND (2) SUCH OTHER DATE AS MAY BE REQUIRED BY APPLICABLE LAW.





 






    	 	22	 



     


    

 


PRIOR TO THE REGISTRATION OF ANY TRANSFER
IN ACCORDANCE WITH CLAUSE (2)(D) ABOVE, THE COMPANY AND THE TRUSTEE RESERVE THE RIGHT TO REQUIRE THE DELIVERY OF SUCH LEGAL OPINIONS,
CERTIFICATIONS OR OTHER EVIDENCE AS MAY REASONABLY BE REQUIRED IN ORDER TO DETERMINE THAT THE PROPOSED TRANSFER IS BEING MADE
IN COMPLIANCE WITH THE SECURITIES ACT AND APPLICABLE STATE SECURITIES LAWS. NO REPRESENTATION IS MADE AS TO THE AVAILABILITY OF
ANY EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT.]1


 


[Include the following legend on all
Notes that are Affiliate Notes (the “Affiliate Notes Legend”):]


 


[THIS SECURITY, THE ATTACHED GUARANTEE
AND THE SHARES ISSUABLE UPON CONVERSION OF THIS SECURITY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED
(THE “SECURITIES ACT”), AND MAY NOT BE OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED EXCEPT IN ACCORDANCE WITH THE
FOLLOWING SENTENCE. BY ITS ACQUISITION HEREOF, THE ACQUIRER:


 


(1)         REPRESENTS
THAT IT AND ANY ACCOUNT FOR WHICH IT IS ACTING IS A “QUALIFIED INSTITUTIONAL BUYER” (WITHIN THE MEANING OF RULE 144A
UNDER THE SECURITIES ACT) AND THAT IT EXERCISES SOLE INVESTMENT DISCRETION WITH RESPECT TO EACH SUCH ACCOUNT, AND


 


(2)         AGREES
FOR THE BENEFIT OF DIGITAL TURBINE, INC. THAT IT WILL NOT OFFER, SELL, PLEDGE OR OTHERWISE TRANSFER THIS SECURITY OR ANY BENEFICIAL
INTEREST HEREIN PRIOR TO THE RESALE RESTRICTION TERMINATION DATE (AS DEFINED BELOW), EXCEPT:


 


(A)         DIGITAL
TURBINE, INC. OR ANY SUBSIDIARY THEREOF, OR


 


(B)         PURSUANT
TO A REGISTRATION STATEMENT WHICH HAS BECOME EFFECTIVE UNDER THE SECURITIES ACT.


 


THE “RESALE RESTRICTION TERMINATION
DATE” MEANS THE LATER OF: (1) THE DATE THAT A REGISTRATION STATEMENT UNDER THE SECURITIES ACT WITH RESPECT TO THIS SECURITY
AND BENEFICIAL INTERESTS HEREIN HAS BECOME EFFECTIVE; AND (2) SUCH OTHER DATE AS MAY BE REQUIRED BY APPLICABLE LAW.


 


THIS SECURITY AND THE COMMON STOCK ISSUABLE
UPON CONVERSION OF THIS SECURITY ARE HELD BY AN AFFILIATE OF THE COMPANY AND ARE SUBJECT TO ADDITIONAL RESTRICTIONS ON TRANSFER
UNDER RULE 144 UNDER THE SECURITIES ACT.”]2


 





 






1 The restricted legend shall be deemed removed
from the face of this security without further action of the Company, the Trustee, or the Holders of this security at such
time as the Company instructs the Trustee to remove such legend pursuant to Section 3.08 of the Indenture and upon such
removal, the CUSIP number shall be 25400W AB8.


2 The restricted legend shall be deemed removed
from the face of this security without further action of the Company, the Trustee, or the Holders of this security at such
time as the Company instructs the Trustee to remove such legend pursuant to Section 3.08 of the Indenture.


 






    	 	23	 



     


    

 


8.75% Convertible Senior Notes due
2020


 


No. [ ] U.S. $[ ]


 


CUSIP NO. 25400W AA0




 


Digital Turbine, Inc., a company duly incorporated
and validly existing under the laws of the state of Delaware in the United States of America (herein called the “Company”),
which term includes any successor corporation under the Indenture referred to on the reverse hereof), for value received hereby
promises to pay to [________], or registered assigns, the principal sum of [_______________] UNITED STATES DOLLARS (U.S. $[__________])
[(which amount may from time to time be increased or decreased by adjustments made on the records of the Trustee, as custodian
for the Depositary, in accordance with the rules and procedures of the Depositary and in accordance with the below referred Indenture)]3
on September 23, 2020. The Principal Amount of Physical Notes and interest thereon (to the extent paid in cash), as provided on
the reverse hereof, shall be payable at the Corporate Trust Office and at any other office or agency maintained by the Company
for such purpose. In the case of cash payment, the Paying Agent will pay principal of any Note and interest thereon, as provided
on the reverse hereof, in immediately available funds to [The Depository Trust Company or its nominee, as the case may be, as the
registered holder of such global note,]4
[the Holder]5 on each Interest Payment
Date, Fundamental Change Purchase Date or other payment date, as the case may be.


 


Reference is made to the further provisions
of this Note set forth on the reverse hereof, including, without limitation, provisions giving the Holder the right to convert
this Note into shares of Common Stock of the Company and to the ability and obligation of the Company to purchase this Note upon
certain events, in each case, on the terms and subject to the limitations referred to on the reverse hereof and as more fully specified
in the Indenture. Such further provisions shall for all purposes have the same effect as though fully set forth at this place.
Capitalized terms used but not defined herein shall have such meanings as are ascribed to such terms in the Indenture. In the case
of any conflict between this Note and the Indenture, the provisions of the Indenture shall control.


 


This Note shall not be valid or become obligatory
for any purpose until the certificate of authentication hereon shall have been manually signed by the Trustee or a duly authorized
authenticating agent under the Indenture.


 


IN WITNESS WHEREOF, the Company has caused
this instrument to be duly executed.


 


	 	DIGITAL TURBINE, INC.
	 	 
	 	By:	 
	 	Name:
	 	Title:


 





 






3 Include for Global Note.


4 Include for Global Note.


5 Include for Physical Note.


 






    	 	24	 



     


    

 


	 	By:
	 	Name:
	 	Title:


 


	Date:	 	 
	 	 
	_____________________	 



 



    	 	25	 



     


    

 


Section 2.03         Form
of Reverse of Note.


 


DIGITAL TURBINE, INC.


 


8.75% Convertible Senior Notes due
2020


 


This Note is one of a duly authorized issue
of Notes of the Company, designated as its 8.75% Convertible Senior Notes due 2020 (the “Notes”), limited in
aggregate principal amount to Sixteen Million Dollars ($16,000,000), which amount may from time to time be increased or decreased
by adjustments made on the records of the Trustee, as custodian for the Depositary, in accordance with the rules and procedures
of the Depositary and in accordance with the below referred Indenture) all issued or to be issued under and pursuant to an Indenture
dated as of September 28, 2016 (the “Indenture”) between the Company and U.S. Bank National Association, as
Trustee (the “Trustee”), to which the Indenture and all indentures supplemental thereto reference is hereby
made for a description of the rights, limitations of rights, obligations, duties and immunities thereunder of the Trustee, the
Company and the Holders of the Notes.


 


Interest. The Notes will bear interest
at a rate of 8.75% per year. Interest on the Notes will accrue from, and including, September 28, 2016, or from the most recent
date to which interest has been paid or duly provided for. Interest will be payable semiannually in arrears on each Interest Payment
Date, beginning March 15, 2017.


 


Method of Payment. The Company shall
pay interest entirely in cash in money of the United States of America that at the time of payment is legal tender for payment
of public and private debts.


 


Pursuant to Section 8.03 of the Indenture
and Section 6 of the Registration Rights Agreement, in certain circumstances, the Holders of Notes shall be entitled to receive
Additional Interest. Payments of the Fundamental Change Repurchase Price, principal and interest that are not made when due will
accrue interest per annum at the then-applicable interest rate for the Notes from the required date of payment.


 


Interest will be paid to the person in whose
name a Note is registered at the Close of Business on March 1 or September 1 (whether or not such date is a Business Day), as the
case may be, immediately preceding the relevant Interest Payment Date. Interest on the Notes will be computed on the basis of a
360-day year composed of twelve 30-day months.


 


Interest will cease to accrue on a Note
upon its maturity, conversion or repurchase in connection with a Fundamental Change.


 


Ranking. The Notes constitute a general
unsecured and unsubordinated obligation of the Company.


 






    	 	26	 



     


    

 


Redemption at the Option of the Company;
No Sinking Fund. No sinking fund is provided for the Notes. The Company may redeem for cash all or any portion of the Notes,
at the Redemption Price, if the Last Reported Sale Price of the Common Stock is equal to or greater than 200% of the Conversion
Price in effect (but disregarding the effect on such price from certain anti-dilution adjustments) on the given Trading Day for
at least 20 Trading Days (whether or not consecutive) during any 30 consecutive Trading Day period (including the last Trading
Day of such period) ending within the five Trading Days immediately preceding the date on which the Company provides the Redemption
Notice in accordance with Section 5.02(a) and for 15 consecutive Trading Days following the last Trading Day on which the Last
Reported Sale Price of the Common Stock was equal to or greater than 200% of the Conversion Price in effect (but disregarding the
effect on such price from certain anti-dilution adjustments) on such Trading Day for the purpose of the foregoing clause, the Last
Reported Sale Price of the Common Stock remains equal to or greater than 150% of the Conversion Price in effect (but disregarding
the effect on such price from certain anti-dilution adjustments) on the given Trading Day.


 


Make-Whole Fundamental Change. Subject
to the terms and conditions of the Indenture, if a Make-Whole Fundamental Change occurs and a Holder elects to convert its Notes
in connection with such Make-Whole Fundamental Change, the Company shall increase the Conversion Rate for the Notes so surrendered
for conversion by a number of additional shares of Common Stock in accordance with Section 6.08 and Schedule A of the Indenture.


 


Purchase at the Option of the Holder
Upon a Fundamental Change. Subject to the terms and conditions of the Indenture, the Company shall become obligated, at the
option of the Holder, to repurchase the Notes if a Fundamental Change occurs at any time prior to the Maturity Date at 120% of
the Principal Amount together with accrued and unpaid interest to, but excluding, the Fundamental Change Purchase Date, which amount
will be paid in cash.


 


Withdrawal of Fundamental Change Purchase
Notice. Holders have the right to withdraw, in whole or in part, any Fundamental Change Purchase Notice by delivering to the
Paying Agent a written notice of withdrawal in accordance with the provisions of the Indenture, or in the case of Notes held in
book entry form, in accordance with the Applicable Procedures of DTC. The right to withdraw the Fundamental Change Purchase Notice
will terminate at the Close of Business on the Business Day immediately preceding the relevant Fundamental Change Purchase Date.


 


Payment of Fundamental Change Purchase
Price. If money sufficient to pay the Fundamental Change Purchase Price of all Notes or portions thereof to be purchased on
a Fundamental Change Purchase Date is deposited with the Paying Agent on the Fundamental Change Purchase Date, such Notes will
cease to be outstanding and interest will cease to accrue on such Notes (or portions thereof) immediately after the Close of Business
on such Fundamental Change Purchase Date, and the Holder thereof shall have no other rights as such (other than the right to receive
the Fundamental Change Purchase Price upon surrender of such Note).


 


Conversion. Subject to and upon compliance
with the provisions of the Indenture (including without limitation the conditions of conversion of this Note set forth in Article
6 thereof), the Holder hereof has the right, at its option, to convert the Principal Amount hereof or any portion of such principal
which is $1,000 or an integral multiple of $1,000 in excess thereof, into shares of Common Stock at the Applicable Conversion Rate.
The Conversion Rate is initially 733.14 shares of Common Stock per $1,000 Principal Amount of Notes (equivalent to an initial Conversion
Price of approximately $1.364), subject to adjustment in certain events described in the Indenture. Upon conversion, the Company
will deliver shares of Common Stock, and the Early Conversion Payment, if applicable, as set forth in the Indenture. No fractional
shares will be issued upon any conversion, but a payment in cash will be made, as provided in the Indenture, in respect of any
fraction of a share which would otherwise be issuable upon the surrender of any Notes for conversion. Notes in respect of which
a Holder is exercising its right to require repurchase on a Fundamental Change Purchase Date may be converted only if such Holder
withdraws the related election to exercise such right in accordance with the terms of the Indenture.


 






    	 	27	 



     


    

 


In the event of a deposit or withdrawal
of an interest in this Note, including an exchange, transfer, repurchase or conversion of this Note in part only, the Trustee,
as custodian of the Depositary, shall make an adjustment on its records to reflect such deposit or withdrawal in accordance with
the rules and procedures of the Depositary.


 


Limitations on Issuance due to Market
Regulation. Notwithstanding anything to the contrary in the Indenture or in the Notes, the Company shall not be obligated to
issue shares of Common Stock upon conversion of the Notes in connection with an Early Conversion Payment or otherwise, and shall
not be entitled to issue shares of Common Stock in connection with any anti-dilution terms described in the Indenture, to the extent
(and only to the extent) the issuance of such shares of Common Stock, would exceed that aggregate number of shares of Common Stock
which the Company may issue, in the aggregate, pursuant to the terms of all Notes and Warrants without breaching the Exchange Cap
(subject to certain exceptions related to receiving shareholder approval or approval from the Principal Exchange). Until such approval
is obtained, no Holder shall be issued in the aggregate, upon conversion or exercise (as the case may be) of any Notes or any of
the Warrants or otherwise pursuant to the terms of this Note or under the Warrant Agreement, shares of Common Stock in an amount
greater than the product of (i) the Exchange Cap multiplied by (ii) the quotient of (A) the aggregate number of shares of Common
Stock underlying the Notes and Warrants initially purchased by such Holder from the Initial Purchaser on, and determined as of,
the Issue Date divided by (B) the aggregate number of shares of Common Stock underlying the all Notes and all Warrants initially
purchased by all Holders from the Initial Purchaser on, and determined as of, the Issue Date (with respect to each Holder, the
“Exchange Cap Allocation”). In the event that any Holder shall sell or otherwise transfer any of such Holders
Notes, the transferee shall be allocated a pro rata portion of such Holder’s Exchange Cap Allocation based on the relative
number of underlying shares determined as of the Issue Date with respect to such portion of such Notes and any Warrants so transferred,
and the restrictions of the prior sentence shall apply to such transferee with respect to the portion of the Exchange Cap Allocation
so allocated to such transferee. Upon conversion and exercise in full of a holder’s Notes and Warrants, the difference (if
any) between such holder’s Exchange Cap Allocation and the number of shares of Common Stock actually issued to such holder
upon such holder’s conversion in full of such holder’s Notes and exercise in full of such Warrants shall be allocated
to the respective Exchange Cap Allocations of the remaining holders of Notes and Warrants on a pro rata basis in proportion to
the shares of Common Stock then underlying the Notes and Warrants held by each such Holder and holders of Warrants at such time.
In the event that the Company is prohibited from issuing shares of Common Stock pursuant to Section 6.04 of the Indenture (the
“Exchange Cap Shares”), the Company shall pay cash in exchange for the cancellation of such shares of Common
Stock at a price equal to the product of (x) such number of Exchange Cap Shares and (y) the simple average of the daily VWAP for
Common Stock for the ten consecutive VWAP Trading Days ending on and included the VWAP Trading Day immediately prior to the Conversion
Date (the “Exchange Cap Share Cancellation Amount”); provided, that no Exchange Cap Share Cancellation Amount
shall be due and payable to the Holder to the extent that (x) on or prior to the applicable Conversion Share Delivery Date, the
Exchange Cap Allocation of a Holder is increased (whether by assignment by a holder of Notes and/or Warrants or all, or any portion,
of such holder's Exchange Cap Allocation or otherwise) (an “Exchange Cap Allocation Increase”) and (y) after
giving effect to such Exchange Cap Allocation Increase, the Company delivers the applicable Exchange Cap Shares to the Holder (or
its designee) on or prior to the applicable Conversion Share Delivery Date. For the avoidance of any doubt, the term Holder includes
any beneficial interest holder in the case of any Notes represented by a Global Note and any Warrants represented by a Global Warrant
where such instruments are registered in the name of a Depository or a nominee thereof. BY ITS ACQUISITION HEREOF OR OF A BENEFICIAL
INTEREST HEREIN, THE ACQUIRER AGREES IT WILL NOT CONVERT OR EXERCISE THE NOTES OR WARRANTS IN CONTRAVENTION OF THIS PARAGRAPH.


 






    	 	28	 



     


    

 


Beneficial Ownership Cap. Notwithstanding
anything to the contrary contained herein, the Company shall not effect the exercise of any Note, and no Holder shall have the
right to exercise any Note, and any such exercise shall be null and void and treated as if never made, and the Company shall not
be entitled to issue shares of Common Stock in connection with any anti-dilution terms described hereunder, to the extent that
after giving effect to such exercise, the Holder together with the other Attribution Parties collectively would beneficially own
in excess of 4.99% (the “Maximum Percentage”) of the shares of Common Stock outstanding immediately after giving
effect to such exercise. Upon delivery of a written notice to the Company, a Holder may from time to time increase (with such increase
not effective until the sixty-first (61st) day after delivery of such notice) or decrease the Maximum Percentage to any other percentage
not in excess of 9.99% as specified in such notice; provided that (i) any such increase in the Maximum Percentage will not
be effective until the sixty-first (61st) day after such notice is delivered to the Company and (ii) any such increase or decrease
will apply only to such Holder and the other Attribution Parties and not to any other Holder that is not an Attribution Party of
the Holder delivering such notice. The Trustee shall have no obligation to monitor the Company and each Warrantholder’s compliance
with this paragraph.


 


Acceleration of Maturity. Subject
to certain exceptions in the Indenture, if an Event of Default shall occur and be continuing, the Principal Amount plus interest
through such date on all the Notes may be declared due and payable in the manner and with the effect provided in the Indenture.


 


Supplement Indentures with Consent of
Holders; Waiver of Past Defaults. The Indenture permits, with certain exceptions as therein provided, the amendment thereof
and the modification of the rights and obligations of the Company and the rights of the Holders of the Notes under the Indenture
at any time by the Company and the Trustee with the consent of the Holders (other than the Company and any Person controlled by
the Company) of not less than a majority in aggregate Principal Amount of the outstanding Notes. The Indenture also contains provisions
permitting the Holders (other than the Company and any Person controlled by the Company) of specified percentages in aggregate
Principal Amount of the outstanding Notes, on behalf of the Holders of all the Notes, to waive compliance by the Company with certain
provisions of the Indenture and certain past Defaults under the Indenture and their consequences. Any such consent or waiver by
the Holder of any provision of or applicable to this Note shall be conclusive and binding upon such Holder and upon all future
Holders of this Note and of any Note issued upon the registration of transfer hereof or in exchange herefor or in lieu hereof,
whether or not notation of such consent or waiver is made upon this Note.


 






    	 	29	 



     


    

 


Registration of Transfer and Exchange.
As provided in the Indenture and subject to certain limitations therein set forth, the transfer of this Note is registrable in
the Register, upon surrender of this Note for registration of transfer at the office or agency of the Company in the United States,
duly endorsed by, or accompanied by a written instrument of transfer in form satisfactory to the Company and the Registrar duly
executed by, the Holder hereof or his attorney duly authorized in writing, and thereupon one or more new Notes, of authorized denominations
and for the same aggregate Principal Amount, will be issued to the designated transferee or transferees.


 


No service charge shall be made for any
such registration of transfer or exchange, but the Company and the Registrar may require payment of a sum sufficient to cover any
tax or other governmental charge payable in connection therewith.


 


Prior to due presentment of this Note for
registration of transfer, the Company, the Trustee and the Registrar and any agent of the Company or the Trustee may treat the
Person in whose name this Note is registered as the owner hereof for all purposes, whether or not this Note be overdue, and neither
the Company, the Trustee nor any such agent shall be affected by notice to the contrary.


 


Registration Rights. Holders of this
Note (including any Person that has a beneficial interest in this Note) are entitled to the benefits of the Registration Rights
Agreement, which applies (among other securities) to shares of Common Stock issued or issuable upon conversion of the Notes, including
in connection with an Early Conversion Payment.


 


In accordance with the terms of the Registration
Rights Agreement, during any period in which an Event (each, a “Registration Default”) has occurred and is continuing,
the Company will pay Additional Interest from and including the day of such Registration Default to but excluding the day on which
such Registration Default has been cured. Additional Interest with respect to a Registration Default will be paid semiannually
in arrears, with the first semiannual payment due on the first Interest Payment Date occurring after the Event Date and will accrue
at a rate per annum equal to one percent (1.00%) of the principal amount of Notes outstanding.


 


Whenever in this Note there is a reference,
in any context, to the payment of interest on, or in respect of, any Note as of any time, such reference shall be deemed to include
reference to Additional Interest, if any, payable in respect of such Note to the extent that such Additional Interest, if any,
is, was or would be so payable at such time, and express mention of Additional Interest, if any, in any provision of this Note
shall not be construed as excluding Additional Interest, if any, so payable in those provisions of this Note when such express
mention is not made.


 






    	 	30	 



     


    

 


Denominations. The Notes are issuable
only in registered form in minimum denominations of $1,000 and any integral multiple of $1,000 in excess thereof, as provided in
the Indenture and subject to certain limitations therein set forth. Notes are exchangeable for a like aggregate Principal Amount
of Notes of a different authorized denomination, as requested by the Holder surrendering the same.


 


This Note and any claim, controversy
or dispute arising under or related to this Note shall be governed by and construed in accordance with the laws of the State of
New York.


 


All terms used in this Note that are defined
in the Indenture shall have the meanings assigned to them in the Indenture.


 




    	 	31	 



     


    

 


ASSIGNMENT FORM


 


DIGITAL TURBINE, INC.


 


8.75% Convertible Senior Notes due
2020


 


For value received _______________ hereby
sell(s), assign(s) and transfer(s) unto ________________ (Please insert social security or Taxpayer Identification Number of assignee)
the within Note, and hereby irrevocably constitutes and appoints _______________ attorney to transfer the said Note on the books
of the Company, with full power of substitution in the premises.


 


In connection with any transfer of the within
Note occurring prior to the Resale Restriction Termination Date, as defined in the Indenture governing such Note, the undersigned
confirms that such Note is being transferred:


 


□To Digital Turbine, Inc. or a Subsidiary thereof; or


 


□Pursuant to a registration statement that has become
or been declared effective under the Securities Act of 1933, as amended; or


 


□Pursuant to and in compliance with Rule 144A under the
Securities Act of 1933, as amended; or


 


□Pursuant to and in compliance with Rule 144 (including
Rule 144(i) and the current public information requirements thereof) under the Securities Act of 1933, as amended, or any other
available exemption from the registration requirements of the Securities Act of 1933, as amended.


 


TO BE COMPLETED BY PURCHASER IF THE THIRD
BOX ABOVE IS CHECKED


 


The undersigned represents and warrants
that it is purchasing this Note for its own account or an account with respect to which it exercises sole investment discretion
and that it and any such account is a “qualified institutional buyer” within the meaning of Rule 144A under the Securities
Act and is aware that the sale to it is being made in reliance on Rule 144A and acknowledges that it has received such information
regarding the Company as the undersigned has requested pursuant to Rule 144A or has determined not to request such information
and that it is aware that the transferor is relying upon the undersigned’s foregoing representations in order to claim the
exemption from registration provided by Rule 144A.


 


	Date:	 	 	Signed:	 	 


 


Unless one of the above boxes is checked,
the Trustee will refuse to register any of the Notes evidenced by this certificate in the name of any Person other than the registered
Holder thereof, provided that if the fourth box is checked, the Company or the Trustee may require, prior to registering
any such transfer of the Notes, in its sole discretion, such legal opinions, certifications and other information as the Company
or the Trustee may reasonably request to confirm that such transfer is being made pursuant to an exemption from, or in a transaction
not subject to, the registration requirements of the Securities Act.


 






    	 	32	 



     


    

 


If none of the foregoing boxes is checked,
the Trustee or Registrar shall not be obligated to register this Note in the name of any Person other than the Holder hereof unless
and until the conditions to any such transfer of registration set forth herein and in Section 3.11 of the Indenture shall have
been satisfied.


 


	Dated:	 	 
	 	 
	 	 
	Signature(s)	 
	 	 
	 	 
	Signature Guarantee	 


 


Signature(s) must be guaranteed by an

eligible Guarantor Institution (banks, stock

brokers, savings and loan associations and

credit unions) with membership in an approved

signature guarantee medallion program pursuant

to Securities and Exchange Commission


 


Rule 17Ad-15 if Notes are to be delivered, other

than to and in the name of the registered holder.


 


NOTICE: The signature on the assignment must correspond with
the name as written upon the face of the Note in every particular without alteration or enlargement or any change whatever.


 




    	 	33	 



     


    

 


AFFILIATE NOTE ASSIGNMENT FORM


 


DIGITAL TURBINE, INC.


 


8.75% Convertible Senior Notes due
2020


 


For value received _______________ hereby
sell(s), assign(s) and transfer(s) unto _______________ (Please insert social security or Taxpayer Identification Number of
assignee) the within Note, and hereby irrevocably constitutes and appoints _______________ attorney to transfer the said Note on
the books of the Company, with full power of substitution in the premises.


 


In connection with any transfer of the within
Note occurring prior to the Resale Restriction Termination Date, as defined in the Indenture governing such Note, the undersigned
confirms that such Note is being transferred:


 


□To Digital Turbine, Inc. or a Subsidiary thereof; or


 


□Pursuant to a registration statement that has become
or been declared effective under the Securities Act of 1933, as amended.


 


	Date:	 	 	Signed:	 	 


 


Unless one of the above boxes is checked,
the Trustee will refuse to register any of the Notes evidenced by this certificate in the name of any Person other than the registered
Holder thereof.


 


If none of the foregoing boxes is checked,
the Trustee or Registrar shall not be obligated to register this Note in the name of any Person other than the Holder hereof unless
and until the conditions to any such transfer of registration set forth herein and in Section 3.11 of the Indenture shall have
been satisfied.


 


	Dated:	 	 
	 	 
	 	 
	Signature(s)	 
	 	 
	 	 
	Signature Guarantee	 


 


Signature(s) must be guaranteed by an

eligible Guarantor Institution (banks, stock

brokers, savings and loan associations and

credit unions) with membership in an approved

signature guarantee medallion program pursuant

to Securities and Exchange Commission


 






    	 	34	 



     


    

 


Rule 17Ad-15 if Notes are to be delivered, other

than to and in the name of the registered holder.


 


NOTICE: The signature on the assignment must correspond with
the name as written upon the face of the Note in every particular without alteration or enlargement or any change whatever.


 




    	 	35	 



     


    

 


CONVERSION NOTICE


 


DIGITAL TURBINE, INC.


 


8.75% Convertible Senior Notes due
2020


 


If you want to convert this Note into Common
Stock of the Company, check the box: [_]


 


To convert only part of this Note, state
the Principal Amount to be converted (which must be $1,000 or an integral multiple of $1,000 in excess thereof):


 


	 	$	 	 


 


If you want the share certificate, if any,
made out in another person’s name, fill in the form below:


 


	 
	(Insert other person’s social security or tax ID no.)


 


	 
	 
	 
	(Print or type other person’s name, address and zip code)


 


	 	Signature Guarantee:	 	 


 


Note: Signatures must be guaranteed by an “eligible guarantor
institution” meeting the requirements of the Registrar, which requirements include membership or participation in the Security
Transfer Agent Medallion Program (“STAMP”) or such other “signature guarantee program” as may be
determined by the Registrar in addition to, or in substitution for, STAMP, all in accordance with the Securities Exchange Act of
1934, as amended.


 




    	 	36	 



     


    

 


[Form of Fundamental Change Repurchase Notice]


 


DIGITAL TURBINE, INC.


 


8.75% Convertible Senior Notes due
2020


 


To: U.S. Bank National Association


633 West Fifth Street, 24th Floor


Los Angeles, California 90071


Attention: Bradley Scarbrough, Vice President


Re: Digital Turbine Indenture


Fax: (213) 615-6197


 


The undersigned registered owner of this
Note hereby acknowledges receipt of a notice from Digital Turbine, Inc. (the “Company”) as to the occurrence
of a Fundamental Change with respect to the Company and specifying the Fundamental Change Purchase Date and requests and instructs
the Company to pay to the registered holder hereof in accordance with the applicable provisions of the Indenture referred to in
this Note (1) the entire principal amount of this Note, or the portion thereof (that is $1,000 principal amount or an integral
multiple thereof) below designated, and (2) if such Fundamental Change Purchase Date does not fall during the period after a Regular
Record Date and on or prior to the corresponding Interest Payment Date, accrued and unpaid interest, if any, thereon to, but excluding,
such Fundamental Change Purchase Date.


 


In the case of Physical Notes, the certificate
numbers of the Notes to be repurchased are as set forth below:


 


	Dated:	 	 	 


 


	 	 
	 	Signature(s)
	 	 
	 	 
	 	Social Security or Other Taxpayer
	 	Identification Number
	 	 
	 	Principal amount to be repaid (if less than all): $_____,000


 


NOTICE: The above signature(s) of the Holder(s)
hereof must correspond with the name as written upon the face of the Note in every particular without alteration or enlargement
or any change whatever.


 


Article
3.

THE SECURITIES


 


Section 3.01         Title
and Terms; Payments. The aggregate Principal Amount of Notes that may be authenticated and delivered under this Indenture is
limited to Sixteen Million Dollars ($16,000,000), except for Notes authenticated and delivered upon registration or transfer of,
or in exchange for, or in lieu of, other Notes pursuant to Sections 3.05, 3.06, 3.07, 3.08, 3.09, 3.11 or 3.12.


 






    	 	37	 



     


    

 


The Notes shall be known and designated
as the “8.75% Convertible Senior Notes due 2020” of the Company. The Principal Amount shall be payable on the Maturity
Date.


 


The Principal Amount of Physical Notes shall
be payable at the Corporate Trust Office and at any other office or agency maintained by the Company for such purpose. The Company
shall pay interest on the Notes (including Additional Interest) in cash. Interest on Physical Notes, will be payable (i) to Holders
having an aggregate Principal Amount of $1,000,000 or less of Notes, by check mailed to such Holders at the address set forth in
the Register and (ii) to Holders having an aggregate Principal Amount of more than $1,000,000 of Notes, either by check mailed
to such Holders or, upon application by a Holder to the Registrar not later than the relevant Regular Record Date for such interest
payment, by wire transfer in immediately available funds to such Holder’s account within the United States, which application
shall remain in effect until the Holder notifies the Registrar to the contrary in writing. The Paying Agent will pay principal
of, and interest on, Global Notes in immediately available funds to The Depository Trust Company or its nominee, as the case may
be, as the registered holder of such global note, on each Interest Payment Date, Fundamental Change Purchase Date or other payment
date, as the case may be.


 


Any Notes repurchased by the Company will
be retired and no longer outstanding hereunder.


 


Section 3.02         Ranking.
The Notes constitute a general unsecured and unsubordinated obligation of the Company.


 


Section 3.03         Denominations.
The Notes shall be issuable only in registered form without coupons and in minimum denominations of $1,000 and any integral multiple
of $1,000 in excess thereof.


 


Section 3.04         Execution,
Authentication, Delivery and Dating. The Notes shall be executed on behalf of the Company (a) by its Chief Executive Officer,
its President, its Chief Financial Officer or any of its Vice Presidents and (b) by its Treasurer, any Assistant Treasurer, the
Secretary or any of its Vice Presidents.


 


Notes bearing the manual or facsimile signatures
of individuals who were at any time the proper officers of the Company shall bind the Company, notwithstanding that such individuals
or any of them have ceased to hold such offices prior to the authentication and delivery of such Notes or did not hold such offices
at the date of such Notes.


 


At any time and from time to time after
the execution and delivery of this Indenture, the Company may deliver Notes executed by the Company to the Trustee for authentication,
together with a Company Order for the authentication and delivery of such Notes. The Company Order shall specify the amount of
Notes to be authenticated, and shall further specify the amount of such Notes to be issued as a Global Notes or as Physical Notes,
and whether any such Notes to be authenticated are Affiliate Notes. The Trustee in accordance with such Company Order shall authenticate
and deliver such Notes as in this Indenture provided and not otherwise.


 






    	 	38	 



     


    

 


Each Note shall be dated the date of its
authentication.


 


No Note shall be entitled to any benefit
under this Indenture or be valid or obligatory for any purpose unless there appears on such Note a certificate of authentication
substantially in the form provided for herein executed by the Trustee by manual signature, and such certificate upon any Note shall
be conclusive evidence, and the only evidence, that such Note has been duly authenticated and delivered hereunder.


 


Section 3.05         Temporary
Notes. Pending the preparation of definitive Notes, the Company may execute, and upon Company Order the Trustee shall authenticate
and deliver, temporary Notes that are printed, lithographed, typewritten, mimeographed or otherwise produced, in any authorized
denomination, substantially of the tenor of the definitive Notes in lieu of which they are issued and with such appropriate insertions,
omissions, substitutions and other variations as the officers executing such Notes may determine, as evidenced by their execution
of such Notes; provided, that any such temporary Notes shall bear legends on the face of such Notes as set forth in Section
2.02.


 


If temporary Notes are issued, the Company
will cause definitive Notes to be prepared without unreasonable delay. After the preparation of definitive Notes, the temporary
Notes shall be exchangeable for definitive Notes upon surrender of the temporary Notes at any office or agency of the Company designated
pursuant to Section 4.02, without charge to the Holder. Upon surrender for cancellation of any one or more temporary Notes, the
Company shall execute and the Trustee shall authenticate and deliver in exchange therefor a like Principal Amount of Physical Notes
of authorized denominations. Until so exchanged, the temporary Notes shall in all respects be entitled to the same benefits under
this Indenture as Physical Notes.


 


Section 3.06         Registration;
Registration of Transfer and Exchange.


 


(a)          The
Company shall cause to be kept at the applicable Corporate Trust Office of the Trustee a register (the register maintained in such
office and in any other office or agency designated pursuant to Section 4.02 being herein sometimes collectively referred to as
the “Register”) in which, subject to such reasonable regulations as it may prescribe, the Company shall provide
for the registration of Notes and of transfers of Notes. The Trustee is hereby appointed “Registrar” (the “Registrar”)
for the purpose of registering Notes and transfers of Notes as herein provided.


 


Upon surrender for registration of transfer
of any Note at an office or agency of the Company designated pursuant to Section 4.02 for such purpose, the Company shall execute,
and the Trustee shall authenticate and deliver, in the name of the designated transferee or transferees, one or more new Notes
of any authorized denominations and of a like aggregate Principal Amount and tenor, each such Note bearing such restrictive legends
as may be required by this Indenture (including Sections 2.02, 3.07 and 3.11).


 


At the option of the Holder and subject
to the other provisions of Section 3.07 and to Section 3.11, Notes may be exchanged for other Notes of any authorized denominations
and of a like aggregate Principal Amount and tenor, upon surrender of the Notes to be exchanged at such office or agency. Whenever
any Notes are so surrendered for exchange, the Company shall execute, and the Trustee shall authenticate and deliver, the Notes
which the Holder making the exchange is entitled to receive.


 






    	 	39	 



     


    

 


All Notes issued upon any registration of
transfer or exchange of Notes shall be the valid obligations of the Company, evidencing the same debt, and entitled to the same
benefits under this Indenture, as the Notes surrendered upon such registration of transfer or exchange.


 


Every Note presented or surrendered for
registration of transfer or for exchange shall (if so required by the Company or the Trustee) be duly endorsed, or be accompanied
by a written instrument of transfer in form satisfactory to the Company and the Registrar duly executed, by the Holder thereof
or his attorney duly authorized in writing. As a condition to the registration of transfer of any Restricted Notes, the Company
or the Trustee may require evidence satisfactory to them as to the compliance with the restrictions set forth in the legend on
such Notes.


 


No service charge shall be made for any
registration of transfer or exchange of Notes, but the Company and the Registrar may require payment of a sum sufficient to cover
any tax or other governmental charge that may be imposed in connection with any registration of transfer or exchange of Notes,
other than exchanges pursuant to Section 3.05 not involving any transfer.


 


Neither the Company nor the Registrar shall
be required to exchange or register a transfer of any Note in the circumstances set forth in Section 3.11(a)(iv).


 


(b)          Neither
any members of, or participants in, the Depositary (collectively, the “Agent Members”) nor any other Persons
on whose behalf any Agent Member may act shall have any rights under this Indenture with respect to any Global Note registered
in the name of the Depositary or any nominee thereof, or under any such Global Note, and the Depositary or such nominee, as the
case may be, may be treated by the Company, the Trustee and any agent of the Company or the Trustee as the absolute owner and Holder
of such Global Note for all purposes whatsoever. The Trustee shall have no responsibility or obligation to any Agent Members or
any other Person on whose behalf Agent Members may act with respect to (i) any ownership interests in the Global Note, (ii) the
accuracy of the records of the Depositary or its nominee, (iii) any notice required hereunder or (iv) any payments under or with
respect to the Global Note. Notwithstanding the foregoing, nothing herein shall prevent the Company, the Trustee or any agent of
the Company or the Trustee from giving effect to any written certification, proxy or other authorization furnished by the Depositary
or such nominee, as the case may be, or impair, as between the Depositary, its Agent Members and any other Person on whose behalf
an Agent Member may act, the operation of customary practices of such Persons governing the exercise of the rights of a Holder
of any Note. The registered Holder of a Global Note may grant proxies and otherwise authorize any Person, including Agent Members
and persons that may hold interests through Agent Members, to take any action that a Holder is entitled to take under this Indenture
or the Notes.


 






    	 	40	 



     


    

 


Section 3.07         Transfer
Restrictions.


 


(a)          Restricted
Notes.


 


(i)          Every
Note (and all securities issued in exchange therefor or substitution thereof, except any shares of Common Stock issued upon conversion
thereof) that bears, or that is required under this Section 3.07 to bear, the Restricted Notes Legend will be deemed to be a “Restricted
Note.” Each Restricted Note will be subject to the restrictions on transfer set forth in this Indenture (including in
the Restricted Notes Legend) and will bear the restricted CUSIP number for the Notes unless such restrictions on transfer are eliminated
or otherwise waived by written consent of the Company, and each Holder of a Restricted Note, by such Holder’s acceptance
of such Restricted Note, will be deemed to be bound by the restrictions on transfer applicable to such Restricted Note.


 


(ii)         Until
the Resale Restriction Termination Date, any Note (or any security issued in exchange therefor or substitution thereof, except
any shares of Common Stock issued upon the conversion thereof) will bear the Restricted Notes Legend unless:


 


(A)         such
Note, since last held by the Company or an affiliate of the Company (within the meaning of Rule 144), if ever, was transferred
(1) to a Person other than (x) the Company or (y) an affiliate of the Company (within the meaning of Rule 144) or a Person that
was an Affiliate of the Company within the three months immediately preceding such transfer and (2) pursuant to a registration
statement that was effective under the Securities Act at the time of such transfer;


 


(B)         such
Note was transferred (1) to a Person other than (x) the Company or (y) an affiliate of the Company (within the meaning of Rule
144) or a Person that was an Affiliate of the Company within the three months immediately preceding such transfer and (2) pursuant
to the exemption from registration provided by Rule 144 or any similar provision then in force under the Securities Act; or


 


(C)         the
Company delivers written notice to the Trustee and the Registrar stating that the Restricted Notes Legend may be removed from such
Note.


 


(iii)        In
addition, until the Resale Restriction Termination Date:


 


(A)         no
transfer of any Note will be registered by the Registrar prior to the Resale Restriction Termination Date unless the transferring
Holder delivers the form of assignment set forth on the Note, with the appropriate box checked, to the Trustee; and


 


(B)         the
Registrar will not register any transfer of any Note that is a Restricted Note to a Person that is an affiliate of the Company
(within the meaning of Rule 144) or has been an Affiliate of the Company within the three months immediately preceding the date
of such proposed transfer.


 


(iv)        On
and after the Resale Restriction Termination Date, any Note (or any security issued in exchange therefor or substitution thereof,
except any shares of Common Stock issued upon the conversion thereof) will bear the Restricted Notes Legend at any time the Company
reasonably determinates that, to comply with law, such Note (or such securities issued in exchange for or substitution of a Note)
must bear the Restricted Notes Legend.


 






    	 	41	 



     


    

 


(b)          Restricted
Stock.


 


(i)          Every
share of Common Stock that bears, or that is required under this Section 3.07 to bear, the Restricted Stock Legend will be deemed
to be “Restricted Stock.” Each share of Restricted Stock will be subject to the restrictions on transfer set
forth in this Indenture (including in the Restricted Stock Legend) and will bear a restricted CUSIP number unless such restrictions
on transfer are eliminated or otherwise waived by written consent of the Company, and each Holder of Restricted Stock, by such
Holder’s acceptance of Restricted Stock, will be deemed to be bound by the restrictions on transfer applicable to such Restricted
Stock.


 


(ii)         Until
the Resale Restriction Termination Date, any share of Common Stock issued upon the conversion of a Note will be issued in definitive
form and will bear the Restricted Stock Legend unless:


 


(A)         such
share of Common Stock was transferred (1) to a Person other than (x) the Company or (y) an affiliate of the Company (within the
meaning of Rule 144) or a Person that was an Affiliate of the Company within the three months immediately preceding such transfer
and (2) pursuant to a registration statement that was effective under the Securities Act at the time of such conversion;


 


(B)         such
share of Common Stock was transferred (1) to a Person other than (x) the Company or (y) an affiliate of the Company (within the
meaning of Rule 144) or a Person that was an Affiliate of the Company within the three months immediately preceding such transfer
and (2) pursuant to the exemption from registration provided by Rule 144 or any similar provision then in force under the Securities
Act;


 


(C)         such
Note, regardless of whether bearing the Restricted Notes Legend, was not, at the time of its conversion, required to bear the Restricted
Notes Legend pursuant to Section 3.07(a) and such Common Stock was issued to a Person other than (1) the Company or (2) an Affiliate
of the Company; or


 


(D)         the
Company delivers written notice to the Trustee, the Registrar and the Transfer Agent for the Common Stock stating that such share
of Common Stock need not bear the Restricted Stock Legend.


 


(iii)        On
and after the Resale Restriction Termination Date, any share of Common Stock will be issued in definitive form and will bear the
Restricted Stock Legend at any time the Company reasonably determinates that, to comply with law, such share of Common Stock must
bear the Restricted Stock Legend, but shall not otherwise bear the Restricted Stock Legend, and in connection with any sale, assignment
or transfer of any shares of Common Stock that is eligible to be sold, assigned or transferred under Rule 144, it shall be sufficient
for a Holder to provide the Company with reasonable assurances that such Restricted Stock are eligible for sale, assignment or
transfer under Rule 144 and will be resold prior to the filing of the earliest of the Company’s next Quarterly Report on
Form 10-Q or Annual Report on Form 10-K, as applicable, and need not provide an opinion of a Holder’s counsel.


 






    	 	42	 



     


    

 


(c)          Affiliate
Notes.


 


(i)          Every
Affiliate Note (and all securities issued in exchange therefor or substitution thereof, except any shares of Common Stock issued
upon conversion thereof) that bears, or that is required under this Section 3.07 to bear, the Affiliate Notes Legend will be deemed
to be a “Restricted Affiliate Note.” Each Restricted Affiliate Note will be subject to the restrictions on transfer
set forth in this Indenture (including in the Affiliate Notes Legend) and will be a Physical Note unless such restrictions on transfer
are eliminated or otherwise waived by written consent of the Company, and each Holder of a Restricted Affiliate Note, by such Holder’s
acceptance of such Restricted Affiliate Note, will be deemed to be bound by the restrictions on transfer applicable to such Restricted
Affiliate Note.


 


(ii)         Any
Affiliate Note (or any security issued in exchange therefor or substitution thereof, except any shares of Common Stock issued upon
the conversion thereof) will bear the Affiliate Notes Legend unless:


 


(A)         such
Affiliate Note, since last held by the Company or an affiliate of the Company (within the meaning of Rule 144), if ever, was transferred
(1) to a Person other than (x) the Company or (y) an affiliate of the Company (within the meaning of Rule 144) or a Person that
was an affiliate of the Company within the three months immediately preceding such transfer and (2) pursuant to a registration
statement that was effective under the Securities Act at the time of such transfer;


 


(B)         such
Affiliate Note, since last held by the Company or an affiliate of the Company (within the meaning of Rule 144), if ever, was transferred
(1) to a Person other than (x) the Company or (y) an affiliate of the Company (within the meaning of Rule 144) or a Person that
was an affiliate of the Company within the three months immediately preceding such transfer and (2) pursuant to the exemption from
registration provided by Rule 144 or any similar provision then in force under the Securities Act; or


 


(C)         the
Company delivers written notice to the Trustee and the Registrar stating that the Restricted Notes Legend may be removed from such
Note.


 


(iii)        In
addition no transfer of any Affiliate Note will be registered by the Registrar unless the transferring Holder delivers the form
of assignment set forth on the Affiliate Note, with the appropriate box checked, to the Trustee.


 


(iv)        Any
Affiliate Note (or any security issued in exchange therefor or substitution thereof, except any shares of Common Stock issued upon
the conversion thereof) will bear the Affiliate Notes Legend at any time the Company reasonably determinates that, to comply with
law, such Note (or such securities issued in exchange for or substitution of a Note) must bear the Restricted Notes Legend.


 


(v)         Any
share of Common Stock issued upon the conversion of an Affiliate Note will be issued in definitive form and will bear the Restricted
Stock Legend unless:


 


(A)         such
share of Common Stock was transferred (1) to a Person other than (x) the Company or (y) an affiliate of the Company (within the
meaning of Rule 144) or a Person that was an Affiliate of the Company within the three months immediately preceding such transfer
and (2) pursuant to a registration statement that was effective under the Securities Act at the time of such conversion;


 






    	 	43	 



     


    

 


(B)         such
share of Common Stock was transferred (1) to a Person other than (x) the Company or (y) an affiliate of the Company (within the
meaning of Rule 144) or a Person that was an affiliate of the Company within the three months immediately preceding such transfer
and (2) pursuant to the exemption from registration provided by Rule 144 or any similar provision then in force under the Securities
Act; or


 


(C)         the
Company delivers written notice to the Trustee, the Registrar and the Transfer Agent for the Common Stock stating that such share
of Common Stock need not bear the Restricted Stock Legend.


 


(d)          As
used in this Section 3.07, the term “transfer” means any sale, pledge, transfer, loan, hypothecation or other
disposition whatsoever of any Restricted Note, any interest therein or any Restricted Stock.


 


Section 3.08         Expiration
of Restrictions.


 


(a)          Physical
Notes. Any Physical Note (or any security issued in exchange or substitution therefor) (other than an Affiliate Note) that
does not constitute a Restricted Note may be exchanged for a new Note or Notes of like tenor and aggregate Principal Amount that
do not bear the Restricted Notes Legend required by Section 3.07. To exercise such right of exchange, the Holder of such Note must
surrender such Note in accordance with the provisions of Section 3.11 and deliver any additional documentation reasonably required
by the Company, the Trustee or the Registrar in connection with such exchange. Notwithstanding the foregoing, the Company will
not be required to exchange a Restricted Note for a Note or Notes of like tenor and aggregate Principal Amount that do not bear
the Restricted Notes Legend if, in the written opinion of counsel, removal of the Restricted Notes Legend or the changes to the
CUSIP numbers for the Notes could result in or facilitate transfers of the Notes in violation of applicable law.


 


(b)          Global
Notes; Resale Restriction Termination Date.


 


(i)          If,
on the Resale Restriction Termination Date, or the next succeeding Business Day if the Resale Restriction Termination Date is not
a Business Day, any Notes are represented by a Global Note that is a Restricted Note (any such Global Note, a “Restricted
Global Note”), as promptly as practicable, the Company will automatically exchange every beneficial interest in each
Restricted Global Note for beneficial interests in Global Notes that are not subject to the restrictions set forth in the Restricted
Notes Legend and in Section 3.07 hereof.


 


(ii)         To
effect such automatic exchange, the Company will (A) deliver to the Depositary an instruction letter for the Depositary’s
exchange process at least 15 days immediately prior to the Resale Restriction Termination Date and (B) deliver to each of the Trustee
and the Registrar a duly completed Free Transferability Certificate promptly after the Resale Restriction Termination Date.


 






    	 	44	 



     


    

 


(A)         Immediately
upon receipt of the Free Transferability Certificate by each of the Trustee and the Registrar the Restricted Notes Legend will
be deemed removed from each of the Global Notes specified in such Free Transferability Certificate and the restricted CUSIP number
will be deemed removed from each of such Global Notes and deemed replaced with an unrestricted CUSIP number.


 


(B)         Promptly
after the Resale Restriction Termination Date, the Company will provide Bloomberg LLP with a copy of the Free Transferability Certificate
and will use reasonable efforts to cause Bloomberg LLP to adjust its screen page for the Notes to indicate that the Notes are no
longer Restricted Notes and are now identified by an unrestricted CUSIP number.


 


(iii)        Prior
to the Company’s delivery of the Free Transferability Certificate and afterwards, the Company and the Trustee will comply
with the Applicable Procedures and otherwise use reasonable efforts to cause each Global Note to be identified by an unrestricted
CUSIP number in the facilities of the Depositary by the date the Free Transferability Certificate is delivered to the Trustee and
the Registrar or as promptly as possible thereafter.


 


(iv)        Notwithstanding
anything to the contrary in Sections 3.08(b)(i), (ii) or (iii), the Company will not be required to deliver the Free Transferability
Certificate if, in the written opinion of counsel, removal of the Restricted Notes Legend or the changes to the CUSIP numbers for
the Notes could result in or facilitate transfers of the Notes in violation of applicable law.


 


Section 3.09         Mutilated,
Destroyed, Lost and Stolen Notes. If any mutilated Note is surrendered to the Trustee, the Company shall execute and the Trustee
shall authenticate and deliver in exchange therefor a new Note of like tenor and Principal Amount and bearing a number not contemporaneously
outstanding.


 


If there shall be delivered to the Company
and the Trustee (i) evidence to their satisfaction of the destruction, loss or theft of any Note and (ii) such security or indemnity
as may be required by them to save each of them and any agent of either of them harmless, then, in the absence of notice to the
Company or the Trustee that such Note has been acquired by a bona fide purchaser, the Company shall execute and the Trustee shall
authenticate and deliver, in lieu of any such destroyed, lost or stolen Note, a new Note of like tenor and Principal Amount and
bearing a number not contemporaneously outstanding.


 


In case any such mutilated, destroyed, lost
or stolen Note has become or is about to become due and payable, the Company in its discretion may, instead of issuing a new Note,
pay such Note.


 


Upon the issuance of any new Note under
this Section 3.09, the Company may require payment by the Holder of a sum sufficient to cover any tax or other governmental charge
that may be imposed in relation thereto and any other expenses (including the fees and expenses of the Trustee) connected therewith.


 


Every new Note issued pursuant to this Section
3.09 in lieu of any destroyed, lost or stolen Note shall constitute an original additional contractual obligation of the Company,
whether or not the destroyed, lost or stolen Note shall be at any time enforceable by anyone, and shall be entitled to all the
benefits of this Indenture equally and proportionately with any and all other Notes duly issued hereunder.


 






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The provisions of this Section are exclusive
and shall preclude (to the extent lawful) all other rights and remedies with respect to the replacement or payment of mutilated,
destroyed, lost or stolen Notes.


 


Section 3.10         Persons
Deemed Owners. Prior to due presentment of a Note for registration of transfer, the Company, the Trustee, the Registrar and
any agent of the Company, the Trustee or the Registrar may treat the Person in whose name such Note is registered as the owner
of such Note for the purpose of receiving payment of the principal of such Note and for all other purposes whatsoever, whether
or not such Note be overdue, and neither the Company, the Trustee, the Registrar nor any agent of the Company, the Trustee or the
Registrar shall be affected by notice to the contrary.


 


Section 3.11         Transfer
and Exchange.


 


(a)          Provisions
Applicable to All Transfers and Exchanges.


 


(i)          Subject
to the restrictions set forth in this Section 3.11, Physical Notes and beneficial interests in Global Notes may be transferred
or exchanged from time to time as desired, and each such transfer or exchange will be noted by the Registrar in the Register.


 


(ii)         All
Notes issued upon any registration of transfer or exchange in accordance with this Indenture will be the valid obligations of the
Company, evidencing the same debt, and entitled to the same benefits under this Indenture as the Notes surrendered upon such registration
of transfer or exchange.


 


(iii)        No
service charge will be imposed on any Holder of a Physical Note or any owner of a beneficial interest in a Global Note for any
exchange or registration of transfer, but each of the Company, the Trustee or the Registrar may require such Holder or owner of
a beneficial interest to pay a sum sufficient to cover any transfer tax, assessment or other governmental charge imposed in connection
with such registration of transfer or exchange.


 


(iv)        Unless
the Company specifies otherwise, none of the Company, the Trustee, the Registrar or any co-Registrar will be required to exchange
or register a transfer of any Note (i) that has been surrendered for conversion, (ii) after the Company has delivered a Redemption
Notice pursuant to Section 5.02 hereof, except to the extent the Company fails to pay the applicable Redemption Price when due
or (iii) as to which a Fundamental Change Purchase Notice has been delivered and not withdrawn, in each case, except to the extent
any portion of such Note is not subject to the foregoing.


 


(v)         The
Trustee will have no obligation or duty to monitor, determine or inquire as to compliance with any restrictions on transfer imposed
under this Indenture or under applicable law with respect to any transfer of any interest in any Note (including any transfers
between or among Depositary participants or beneficial owners of interests in any Global Note) other than to require delivery of
such certificates and other documentation or evidence as are expressly required by, and to do so if and when expressly required
by the terms of, this Indenture, and to examine the same to determine substantial compliance as to form with the express requirements
hereof.


 






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(b)          In
General; Transfer and Exchange of Beneficial Interests in Global Notes. So long as the Notes are eligible for book-entry settlement
with the Depositary, unless otherwise required by law, except to the extent required by Section 3.11(c):


 


(i)          all
Notes (other than Affiliate Notes) will be represented by one or more Global Notes;


 


(ii)         every
transfer and exchange of a beneficial interest in a Global Note will be effected through the Depositary in accordance with the
Applicable Procedures and the provisions of this Indenture (including the restrictions on transfer set forth in Section 3.07);
and


 


(iii)        each
Global Note may be transferred only as a whole and only (A) by the Depositary to a nominee of the Depositary, (B) by a nominee
of the Depositary to the Depositary or to another nominee of the Depositary, or (C) by the Depositary or any such nominee to a
successor Depositary or a nominee of such successor Depositary.


 


(c)          Transfer
and Exchange of Global Notes.


 


(i)          Notwithstanding
any other provision of this Indenture, each Global Note will be exchanged for Physical Notes if the Depositary delivers notice
to the Company that:


 


(A)         the
Depositary is unwilling or unable to continue to act as Depositary; or


 


(B)         the
Depositary is no longer registered as a clearing agency under the Exchange Act;


 


and, in each case, the Company promptly delivers a copy of such
notice to the Trustee and the Company fails to appoint a successor Depositary within 90 days after receiving notice from the Depositary.


 


In each such case, each Global Note will
be deemed surrendered to the Trustee for cancellation, and the Trustee will cause each Global Note to be cancelled in accordance
with the Applicable Procedures, and the Company, in accordance with Section 3.04, will promptly execute, and, upon receipt of a
Company Order, the Trustee will, in accordance with Section 3.04, will promptly authenticate and deliver, for each beneficial interest
in each Global Note so exchanged, an aggregate principal amount of Physical Notes equal to the aggregate principal amount of such
beneficial interest, registered in such names and in such authorized denominations as the Depositary specifies, and bearing any
legends that such Physical Notes are required to bear under Section 3.07.


 


(ii)         In
addition, if (x) the Company, in its sole discretion, determines that any Global Note will be exchangeable for Physical Notes or
(y) an Event of Default has occurred and is continuing, in each case, any owner of a beneficial interest in a Global Note may exchange
such beneficial interest for Physical Notes by delivering a written request to the Registrar.


 






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In such case, (A) the Depositary will deliver
notice of such request to the Company and the Trustee, which notice will identify the owner of the beneficial interest to be exchanged,
the aggregate principal amount of such beneficial interest and the CUSIP of the relevant Global Note; (B) the Company will, in
accordance with Section 3.04, promptly execute, and, upon receipt of a Company Order, the Trustee, in accordance with Section 3.04,
will promptly authenticate and deliver, to such owner, for the beneficial interest so exchanged by such owner, Physical Notes registered
in such owner’s name having an aggregate principal amount equal to the aggregate principal amount of such beneficial interest
and bearing any legends that such Physical Notes are required to bear under Section 3.07, and (C) the Registrar, in accordance
with the Applicable Procedures, will cause the principal amount of such Global Note to be decreased by the aggregate principal
amount of the beneficial interest so exchanged. If all of the beneficial interests in a Global Note are so exchanged, such Global
Note will be deemed surrendered to the Trustee for cancellation, and the Trustee will cause such Global Note to be cancelled in
accordance with the Applicable Procedures.


 


(d)          Transfer
and Exchange of Physical Notes.


 


(i)          If
Physical Notes are issued, a Holder may transfer a Physical Note by: (A) surrendering such Physical Note for registration of transfer
to the Registrar, together with any endorsements or instruments of transfer required by any of the Company, the Trustee or the
Registrar; (B) if such Physical Note is a Restricted Note or Affiliate Note, delivering any documentation that the Company, the
Trustee or the Registrar reasonably require to ensure that such transfer complies with Section 3.07 and any applicable securities
laws; and (C) satisfying all other requirements for such transfer set forth in this Section 3.11 and Section 3.07. Upon the satisfaction
of conditions (A), (B) and (C), the Company, in accordance with Section 3.04, will promptly execute and deliver to the Trustee,
and the Trustee, upon receipt of a Company Order, will, in accordance with Section 3.04, promptly authenticate and deliver, in
the name of the designated transferee or transferees, one or more new Physical Notes, of any authorized denominations, having like
aggregate Principal Amount and bearing any restrictive legends required by Section 3.07.


 


(ii)         If
Physical Notes are issued, a Holder may exchange a Physical Note for other Physical Notes of any authorized denominations and aggregate
Principal Amount equal to the aggregate Principal Amount of the Notes to be exchanged by surrendering such Notes, together with
any endorsements or instruments of transfer required by any of the Company, the Trustee or the Registrar, at any office or agency
maintained by the Company for such purposes pursuant to Section 4.02. Whenever a Holder surrenders Notes for exchange, the Company,
in accordance with Section 3.04, will promptly execute and deliver to the Trustee, and the Trustee, upon receipt of a Company Order,
will, in accordance with Section 3.04, promptly authenticate and deliver the Notes that such Holder is entitled to receive, bearing
registration numbers not contemporaneously outstanding and any restrictive legends that such Physical Notes are to bear under Section
3.07.


 






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(iii)        If
Physical Notes are issued, a Holder may transfer or exchange a Physical Note for a beneficial interest in a Global Note by (A)
surrendering such Physical Note for registration of transfer or exchange, together with any endorsements or instruments of transfer
required by any of the Company, the Trustee or the Registrar, at any office or agency maintained by the Company for such purposes
pursuant to Section 4.02; (B) if such Physical Note is a Restricted Note or Affiliate Note, delivering any documentation the Company,
the Trustee or the Registrar reasonably require to ensure that such transfer complies with Section 3.07 and any applicable securities
laws; (C) satisfying all other requirements for such transfer set forth in this Section 3.11 and Section 3.07; and (D) providing
written instructions to the Trustee to make, or to direct the Registrar to make, an adjustment in its books and records with respect
to the applicable Global Note to reflect an increase in the aggregate Principal Amount of the Notes represented by such Global
Note, which instructions will contain information regarding the Depositary account to be credited with such increase. Upon the
satisfaction of conditions (A), (B), (C) and (D), the Trustee will cancel such Physical Note and cause, or direct the Registrar
to cause, in accordance with the Applicable Procedures, the aggregate Principal Amount of Notes represented by such Global Note
to be increased by the aggregate Principal Amount of such Physical Note, and will credit or cause to be credited the account of
the Person specified in the instructions provided by the exchanging Holder in an amount equal to the aggregate Principal Amount
of such Physical Note. If no Global Notes are then outstanding, the Company, in accordance with Section 3.04, will promptly execute
and deliver to the Trustee, and the Trustee, upon receipt of a Company Order, will, in accordance with Section 3.04, authenticate,
a new Global Note in the appropriate aggregate Principal Amount.


 


Section 3.12         Cancellation.
The Company at any time may deliver to the Trustee for cancellation any Notes previously authenticated and delivered hereunder
that the Company may have acquired in any manner whatsoever, and may deliver to the Trustee for cancellation any Notes previously
authenticated hereunder which the Company has not issued and sold. The Trustee shall cancel all Notes surrendered for registration
of transfer, exchange, payment, purchase, repurchase, conversion (pursuant to Article 6 hereof) or cancellation in accordance with
its customary practices. If the Company shall acquire any of the Notes, such acquisition shall not operate as a redemption or satisfaction
of the indebtedness represented by such Notes unless and until the same are delivered to the Trustee for cancellation. The Notes
so acquired, while held by or on behalf of the Company or any of its Subsidiaries, shall not entitle the Holder thereof to convert
the Notes. The Company may not issue new Notes to replace Notes it has paid in full or delivered to the Trustee for cancellation.


 


The Registrar shall retain, in accordance
with its customary procedures, copies of all letters, notices and other written communications received pursuant to this Section
3.12. The Company shall have the right to inspect and make copies of all such letters, notices or other written communications
at any reasonable time upon the giving of reasonable written notice to the Registrar.


 


Section 3.13         CUSIP
Numbers. In issuing the Notes, the Company may use “CUSIP” numbers (if then generally in use), and, if so, the
Trustee shall use “CUSIP” numbers in notices as a convenience to Holders; provided that any such notice may
state that no representation is made as to the correctness of such numbers either as printed on the Notes or as contained in any
notice and that reliance may be placed only on the other identification numbers printed on the Notes, and any such notice shall
not be affected by any defect in or omission of such numbers. The Company will promptly notify the Trustee of any change in the
“CUSIP” numbers.


 






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Article
4.

PARTICULAR COVENANTS OF THE COMPANY


 


Section 4.01         Payment
of Principal and Interest. The Company covenants and agrees that it shall duly and punctually pay or cause to be paid the principal
of and interest on each of the Notes at the places, at the respective times and in the manner provided herein and in the Notes.
If any Interest Payment Date, the Maturity Date or any Fundamental Change Purchase Date is not a Business Day, payment will be
made on the next succeeding Business Day, and no additional interest will accrue thereon in respect of such delay. The Company
will pay all Additional Interest, if any, in the same manner on the dates and in the amounts set forth in Section 8.03 hereof and
Section 2(c) of the Registration Rights Agreement.


 


Section 4.02         Maintenance
of Office or Agency. The Company shall maintain an office or agency in the United States, where the Notes may be surrendered
for registration of transfer or exchange or for presentation for payment or for conversion and where notices and demands to or
upon the Company in respect of the Notes and this Indenture may be served. The Company shall give prompt written notice to the
Trustee of the location, and any change in the location, of such office or agency not designated or appointed by the Trustee. If
at any time the Company shall fail to maintain any such required office or agency or shall fail to furnish the Trustee with the
address thereof, such presentations, surrenders, notices and demands may be made or served at the Corporate Trust Office, and the
Company hereby appoints the Trustee as its agent to receive all such presentations, surrenders, notices and demands; provided
that, the Corporate Trust Office of the Trustee shall not be an office or agency of the Company for the purpose of effecting
service of legal process on the Company.


 


The Company may also from time to time designate
co-Registrars and one or more offices or agencies where the Notes may be presented or surrendered for any or all such purposes
and may from time to time rescind such designations.


 


The Company will give prompt written notice
of any such designation or rescission and of any change in the location of any such other office or agency.


 


The Company hereby initially designates
the Trustee as Paying Agent, Registrar and Conversion Agent.


 


So long as the Trustee is the Registrar,
the Trustee agrees to send, or cause to be sent, the notices set forth in Section 10.11(a) and the third paragraph of Section 10.12.
If co-Registrars have been appointed in accordance with this Section, the Trustee shall send such notices only to the Company and
the Holders of Notes it can identify from its records.


 


Section 4.03         Appointments
to Fill Vacancies in Trustee’s Office. The Company, whenever necessary to avoid or fill a vacancy in the office of Trustee,
will appoint, in the manner provided in Section 10.12, a Trustee, so that there shall at all times be a Trustee hereunder.


 






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Section 4.04         Provisions
as to Paying Agent.


 


(a)          The
Company may designate additional Paying Agents, rescind the designation of any Paying Agent, or approve a change in the office
through which any Paying Agent acts. If the Company shall appoint a Paying Agent other than the Trustee, or if the Trustee shall
appoint such a Paying Agent, the Company will cause such Paying Agent to execute and deliver to the Trustee an instrument in which
such agent shall agree with the Trustee, subject to the provisions of this Section 4.04:


 


(i)          that
it will hold all sums held by it as such agent for the payment of the principal of or interest on the Notes (whether such sums
have been paid to it by the Company or by any other obligor on the Notes) in trust for the benefit of the Holders of the Notes;


 


(ii)         that
it will give the Trustee notice of any failure by the Company (or by any other obligor on the Notes) to make any payment of the
principal of or interest on the Notes when the same shall be due and payable; and


 


(iii)        that
at any time during the continuance of an Event of Default, upon request of the Trustee, it will forthwith pay to the Trustee all
sums so held in trust.


 


The Company shall, on or before each due
date of the principal of or interest on the Notes, deposit with the Paying Agent a sum (in funds which are immediately available
on the due date for such payment) sufficient to pay such principal or interest, and (unless such Paying Agent is the Trustee) the
Company will promptly notify the Trustee of any failure to take such action; provided, however, that if such deposit
is made on the due date, such deposit shall be received by the Paying Agent by 10:00 a.m. New York City time, on such date.


 


(b)          If
the Company shall act as its own Paying Agent, it will, on or before each due date of the principal of or interest on the Notes,
set aside, segregate and hold in trust for the benefit of the Holders of the Notes a sum sufficient to pay such principal or interest
so becoming due and will promptly notify the Trustee of any failure to take such action and of any failure by the Company (or any
other obligor under the Notes) to make any payment of the principal of or interest on the Notes when the same shall become due
and payable.


 


(c)          Anything
in this Section 4.04 to the contrary notwithstanding, the Company may, at any time, for the purpose of obtaining a satisfaction
and discharge of this Indenture, or for any other reason, pay or cause to be paid to the Trustee all sums held in trust by the
Company or any Paying Agent hereunder as required by this Section 4.04, such sums to be held by the Trustee upon the trusts herein
contained and upon such payment by the Company or any Paying Agent to the Trustee, the Company or such Paying Agent shall be released
from all further liability with respect to such sums.


 


(d)          Anything
in this Section 4.04 to the contrary notwithstanding, the agreement to hold sums in trust as provided in this Section 4.04 is subject
to Section 12.03 and Section 12.04.


 


The Trustee shall not be responsible for
the actions of any other Paying Agents (including the Company if acting as its own Paying Agent) and shall have no control of any
funds held by such other Paying Agents.


 






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Section 4.05         Existence.
Subject to Article 9, the Company will do or cause to be done all things necessary to preserve and keep in full force and effect
its existence and rights (charter and statutory); provided, however, that the Company shall not be required to preserve
any such right if the Company shall determine that the preservation thereof is no longer desirable in the conduct of the business
of the Company.


 


Section 4.06         Rule
144A Information Requirement. The Company covenants and agrees that it shall, during any period in which it is not subject
to Section 13 or 15(d) under the Exchange Act, so long as any of the Notes or shares of Common Stock delivered upon conversion
of the Notes will, at such time, constitute “restricted securities” within the meaning of Rule 144(a)(3) under the
Securities Act, promptly provide to the Trustee and will, upon written request, provide to any Holder or beneficial owner of such
Notes or such shares of Common Stock and any prospective purchaser of such Notes or such shares of Common Stock, the information
required pursuant to Rule 144A(d)(4) under the Securities Act to facilitate the resale of such Notes or such shares of Common Stock
pursuant to Rule 144A under the Securities Act, and it will take such further action as any Holder or beneficial owner of such
Notes or such shares of Common Stock may reasonably request from time to time to enable such Holder or beneficial owner to sell
such Notes or such shares of Common Stock in accordance with Rule 144A, as such rule may be amended from time to time.


 


Section 4.07         Resale
of Certain Notes. The Company shall not, and shall not permit any of its Subsidiaries to, resell any Notes that have been reacquired
by the Company or any such Subsidiary. The Trustee shall have no responsibility in respect of the Company’s performance of
its agreement in the preceding sentence.


 


Section 4.08         Commission
Filings and Reports. The Company covenants that any documents or reports that the Company is required to file with the Commission
pursuant to Section 13 or 15(d) of the Exchange Act (other than any portion thereof subject to confidential treatment pursuant
to applicable Commission rules and regulations) shall be filed by the Company with the Trustee within 15 calendar days after the
same is filed with the Commission pursuant to its rules and regulations (giving effect to any grace period provided by Rule 12b-25
under the Exchange Act); provided that in each case the delivery of materials to the Trustee by electronic means or filing
of documents pursuant to the Commission’s “EDGAR” system (or any successor electronic filing system) shall be
deemed to constitute “filing” with the Trustee for purposes of this Section 4.08, it being understood that the Trustee
shall not be responsible for determining whether such filings have been made. Delivery of such reports, information and documents
to the Trustee is for informational purposes only and the Trustee’s receipt of such shall not constitute constructive notice
of any information contained therein or determinable from information contained therein, including the Company’s compliance
with any of its covenants hereunder (as to which the Trustee is entitled to rely exclusively on Officers’ Certificates).


 


Section 4.09         Book-Entry
System. If the Notes cease to trade in the Depositary’s book-entry settlement system, the Company covenants and agrees
that it shall use reasonable efforts to make such other book entry arrangements that it determines are reasonable for the Notes.


 






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Section 4.10         Additional
Interest. If at any time Additional Interest become payable by the Company pursuant to Section 8.03 hereof or Section 6 of
the Registration Rights Agreement, the Company shall promptly deliver to the Trustee a certificate to that effect and stating (i)
the amount of such Additional Interest that is payable and (ii) the date on which such Additional Interest is payable. Unless and
until a Trust Officer of the Trustee receives such a certificate, the Trustee may assume without inquiry that no Additional Interest
is payable. If the Company has paid Additional Interest directly to the Persons entitled to such Additional Interest, the Company
shall deliver to the Trustee a certificate setting forth the particulars of such payment.


 


Section 4.11         Stay;
Extension and Usury Laws. 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 the Notes as contemplated
herein, wherever enacted, now or at any time hereafter in force, or which may affect the covenants or the performance of this Indenture
and the Company (to the extent it may lawfully do so) hereby expressly waives all benefit 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 Trustee,
but will suffer and permit the execution of every such power as though no such law had been enacted.


 


Section 4.12         Compliance
Certificate. The Company shall deliver to the Trustee, within one hundred twenty (120) days after the end of each fiscal year
of the Company (commencing with the fiscal year ending March 31, 2017), an Officers’ Certificate, stating whether or not
to the knowledge of the signer thereof the Company is in default in the performance and observance of any of the terms, provisions
and conditions of this Indenture (without regard to any period of grace or requirement of notice provided hereunder) and, if the
Company shall be in default, specifying all such defaults and the nature and the status thereof of which the signer may have knowledge.


 


The Company shall deliver to the Trustee,
within 30 days after the Company becomes aware of the occurrence of any Event of Default or an event which, with notice or the
lapse of time or both, would constitute an Event of Default, an Officers’ Certificate setting forth the details of such Event
of Default or Default, its status and the action which the Company proposes to take with respect thereto.


 


Any notice required to be given under this
Section 4.12 shall be delivered to a Trust Officer of the Trustee at its Corporate Trust Office.


 


Section 4.13         Limitation
on Indebtedness and Restricted Payments. For such time as there is any aggregate outstanding principal amount of the Notes,
the Company and its Subsidiaries shall not incur:


 


(1)         Secured
Debt (other than Permitted Debt); and


 


(2)         Unsecured
Debt (other than Permitted Debt).


 


For such time as there is any aggregate
outstanding principal amount of the Notes, the Company or its Subsidiaries may not make any Restricted Payments.


 






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The limitations on the ability to incur
Secured Debt or Unsecured Debt, or make Restricted Payments, may be waived by the Holders of two-thirds of the aggregate principal
amount of Notes then outstanding.


 


Section 4.14         Additional
Note Guarantees. If the Company or any Guarantor acquires or creates another Subsidiary after the date of this Indenture and
that newly acquired or created Subsidiary is a wholly-owned Significant Subsidiary and is not prohibited by law or regulation from
providing a Note Guarantee, such Subsidiary will become a Guarantor and execute a Note Guarantee pursuant to a supplemental indenture
in form satisfactory to the Trustee and deliver an Opinion of Counsel to the Trustee within 10 Business Days of the date on which
it was acquired or created to the effect that such supplemental indenture has been duly authorized, executed and delivered by that
Subsidiary and constitutes a valid and binding agreement of that Subsidiary enforceable in accordance with its terms (subject to
customary exceptions). The form of such Note Guarantee is attached as Exhibit C hereto.


 


Section 4.15         Prohibition
on Variable Rate Transactions. Prior to September 23, 2017, the Company shall not in any manner issue or sell or enter into
any agreement to issue or sell, any Common Stock, options, warrants or convertible securities, after the Issue Date, that are issuable
pursuant to such agreement or convertible into or exchangeable or exercisable for shares of Common Stock at a price which varies
or may vary with the market price of the shares of Common Stock, including by way of one or more reset(s) to a fixed price, but
exclusive of such formulations reflecting customary anti-dilution provisions (such as share splits, share combinations, share dividends
and similar transactions) and also exclusive of such formulations reflecting customary price-based anti-dilution provisions. For
avoidance of doubt, the Company’s obligations to adjust the Conversion Price pursuant to the terms of this Indenture shall
not be prohibited by this Section 4.15.


 


Article
5.

OPTIONAL REDEMPTION


 


Section 5.01         Optional
Redemption. No sinking fund is provided for the Notes. At any time after September 23, 2018, and from time to time, the Company
may redeem (an “Optional Redemption”) for cash all or any portion of the Notes, at the Redemption Price, if
(i) the Last Reported Sale Price of the Common Stock is equal to or greater than 200% of the Conversion Price in effect (but without
giving effect to any changes to the Conversion Price pursuant to Section 6.05(b) or 6.05(c)) on the given Trading Day for at least
20 Trading Days (whether or not consecutive) during any 30 consecutive Trading Day period (including the last Trading Day of such
period) ending within the five Trading Days immediately preceding the date on which the Company provides the Redemption Notice
in accordance with Section 5.03, (ii) for 15 consecutive Trading Days following the last Trading Day on which the Last Reported
Sale Price of the Common Stock was equal to or greater than 200% of the Conversion Price in effect (but without giving effect to
any changes to the Conversion Price pursuant to Section 6.05(b) or 6.05(c)) on such Trading Day for the purpose of the foregoing
Section 5.01(i), the Last Reported Sale Price of the Common Stock remains equal to or greater than 150% of the Conversion Price
in effect (but without giving effect to any changes to the Conversion Price pursuant to Section 6.05(b) or 6.05(c)) on the given
Trading Day and (iii) there is no Equity Conditions Failure.


 






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Section 5.02         Notice
of Optional Redemption; Selection of Notes.


 


(a)          In
case the Company exercises its Optional Redemption right to redeem all or, as the case may be, any portion of the Notes pursuant
to Section 5.01, it shall fix a date for redemption (each, a “Redemption Date”) and it shall deliver a notice
of such Optional Redemption (a “Redemption Notice”) not less than 30 calendar days nor more than 70 calendar
days prior to the Redemption Date to the Trustee, the Conversion Agent (if other than the Trustee), the Paying Agent (if other
than the Trustee) and each Holder of Notes. The Redemption Date must be a Business Day.


 


(b)          The
Redemption Notice, if given in the manner herein provided, shall be conclusively presumed to have been duly given, whether or not
the Holder receives such notice. In any case, failure to give such Redemption Notice or any defect in the Redemption Notice to
the Holder of any Note designated for redemption as a whole or in part shall not affect the validity of the proceedings for the
redemption of any other Note.


 


(c)          Each
Redemption Notice shall specify:


 


(i)          the
Redemption Date;


 


(ii)         the
Redemption Price, including any fraction thereof to be paid in shares of common stock as a Redemption/Early Exercise Share Payment;


 


(iii)        that
on the Redemption Date, the Redemption Price will become due and payable upon each Note to be redeemed, and that interest thereon,
if any, shall cease to accrue on and after the Redemption Date;


 


(iv)        the
place or places where such Notes are to be surrendered for payment of the Redemption Price;


 


(v)         that
Holders may surrender their Notes for conversion at any time prior to the close of business on the Business Day immediately preceding
the Redemption Date;


 


(vi)        the
current Applicable Conversion Rate;


 


(vii)       the
CUSIP, ISIN or other similar numbers, if any, assigned to such Notes; and


 


(viii)      in
case any Note is to be redeemed in part only, the portion of the principal amount thereof to be redeemed and on and after the Redemption
Date, upon surrender of such Note, a new Note in principal amount equal to the unredeemed portion thereof shall be issued.


 


A Redemption Notice shall be irrevocable.
After the Company has delivered a Redemption Notice, each Holder will have the right to receive payment of the Redemption Price
for its Notes on the later of (i) the Redemption Date and (ii)(a) if the Notes are Physical Notes, delivery of its Notes to the
Paying Agent or (b) if the Notes are Global Notes, compliance with the Applicable Procedures relating to the redemption and delivery
of the beneficial interests to be redeemed to the Paying Agent; provided, however, that, until the Close of Business on the Business
Day immediately preceding such Redemption Date, Holders may convert their Notes, regardless of whether they have been delivered
to the Paying Agent for redemption, by complying with the requirements for conversion set forth in Article 6.


 






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At the Company’s request, the Trustee
shall give the notice of redemption in the name of and at the Company’s expense; provided, however, that the Company
has delivered to the Trustee, at least five Business Days prior to the date that the Company requests such notice of redemption
to be delivered to the Holders (unless a shorter notice period shall be agreed to by the Trustee), an Officer’s Certificate
requesting that the Trustee give such notice, setting forth the information to be stated in such notice as provided in the preceding
paragraph and providing a form of such notice.


 


(d)          If
fewer than all of the Outstanding Notes are to be redeemed, the Notes to be redeemed shall be selected: (i) if the Notes are listed
on any national securities exchange, in compliance with the requirements of the principal national securities exchange on which
the Notes are listed; (ii) if the Notes are not so listed but are represented by a Global Note, then by lot or otherwise in accordance
with the Depositary’s applicable procedures; or (iii) if the Notes are not so listed and are not represented by a Global
Note, then (in principal amounts of $1,000 or multiples thereof) on a pro rata basis, by lot or by such other method as
the Trustee in its sole discretion shall deem fair and appropriate (it being understood that as long as Notes are held by DTC,
notice will be given by the rules of the Depositary). If any Note selected for partial redemption is submitted for conversion in
part after such selection, the portion of the Note submitted for conversion shall be deemed (so far as may be possible) to be the
portion selected for redemption.


 


(e)          In
the event of any redemption in part, neither the Company nor the Registrar shall be required to register the transfer of or exchange
any Note so selected for redemption, in whole or in part, except the unredeemed portion of any Note being redeemed in part.


 


Section 5.03         Payment
of Notes Called for Redemption.


 


(a)          If
any Redemption Notice has been given in respect of the Notes in accordance with Section 5.02, the Notes shall become due and payable
on the Redemption Date at the place or places stated in the Redemption Notice and at the applicable Redemption Price. On presentation
and surrender of the Notes at the place or places stated in the Redemption Notice, the Notes shall be paid and redeemed by the
Company at the applicable Redemption Price.


 


(b)          Prior
to 11:00 a.m. New York City time on the Redemption Date, the Company shall deposit with the Paying Agent or, if the Company or
a Subsidiary of the Company or an Affiliate of either of them is acting as the Paying Agent, shall segregate and hold in trust
as provided in Section 7.04 an amount of cash (in immediately available funds if deposited on the Redemption Date), sufficient
to pay the Redemption Price of all of the Notes to be redeemed on such Redemption Date. Subject to receipt of funds by the Paying
Agent, payment for the Notes to be redeemed shall be made on the Redemption Date for such Notes. The Paying Agent shall, promptly
after such payment and upon written demand by the Company, return to the Company any funds in excess of the Redemption Price.


 






    	 	56	 



     


    

 


(c)          With
respect to any portion of the Redemption Price that is a Redemption/Early Exercise Share Payment, the shares of Common Stock to
be delivered in satisfaction of such amount shall be delivered as if the Company was making an Early Conversion Payment in shares
of Common Stock, and using the same procedures as provided for such payment in shares as set forth in Section 6.01(c).


 


Section 5.04         Restrictions
on Redemption. The Company may not redeem any Notes on any date if the principal amount of the Notes has been accelerated in
accordance with the terms of the Indenture, and such acceleration has not been rescinded, on or prior to the Redemption Date (except
in the case of an acceleration resulting from a Default by the Company in the payment of the Redemption Price with respect to such
Notes).


 


Article
6.

CONVERSION


 


Section 6.01         Right
to Convert; Early Conversion Payment.


 


(a)          Subject
to and upon compliance with the provisions of this Indenture, each Holder shall have the right, at such Holder’s option,
at any time prior to the Close of Business on the Business Day immediately preceding the Maturity Date, to convert the Principal
Amount of any such Notes, or any portion of such Principal Amount, into shares of Common Stock, provided that any portion of such
Principal Amount that a Holder elects to convert is equal to $1,000 or an integral multiple of $1,000 in excess thereof. Upon any
conversion, the Trustee shall provide to the Company notice of such conversion by electronic transmission, to such addresses as
may be specified from time to time by the Company, promptly after the Conversion Notice is received.


 


(b)          If
a Holder has already delivered a Fundamental Change Purchase Notice with respect to a Note under Section 6.01, such Holder may
convert such Note only if such Holder first withdraws the related Fundamental Change Purchase Notice pursuant to Section 6.03.
If a Holder has surrendered such Holder’s Note for required purchase in connection with a Fundamental Change, such Holder’s
right to withdraw the related Fundamental Change Purchase Note and convert each Note that is subject thereto will terminate at
the Close of Business on (i) the Business Day immediately preceding the relevant Fundamental Change Purchase Date or (ii) in the
case of a Default by the Company in the payment of the Fundamental Change Purchase Price with respect to such Note, the Business
Day immediately preceding the day on which such Default is no longer continuing.


 






    	 	57	 



     


    

 


(c)          Upon
any conversion of Notes prior to September 23, 2019, in addition to the shares deliverable upon conversion, a Holder will be entitled
to receive a payment equal to the Early Conversion Payment. Neither the Trustee nor the Conversion Agent shall have any duty to
calculate or verify the calculation of the Early Conversion Payment. The Company may pay an Early Conversion Payment either in
cash or in Common Stock, or a combination thereof, at its election; provided, that the Company may only make such payment
in Common Stock if there is no Equity Conditions Failure. In the case of an Early Conversion Payment in shares of Common Stock,
the number of shares issuable will be based upon a price equal to 92.5% of the simple average of the Daily VWAP per share for Common
Stock for the 10 Trading Days ending on and including the Trading Day immediately preceding the Conversion Date. Five Trading Day
following the applicable Conversion Date, the Company shall (X) provided that the Transfer Agent is participating in the DTC Fast
Automated Securities Transfer Program and the Holder or its designee has an account with DTC, credit the number of shares to which
each Holder is entitled to such Holder’s or its designee’s balance account with DTC through its Deposit/Withdrawal
at Custodian system, or (Y) if the Transfer Agent is not participating in the DTC Fast Automated Securities Transfer Program or
the Holder or its designee does not have an account with DTC, issue and dispatch by overnight courier to each Holder, a certificate,
registered in the Company’s share register in the name of such Holder or its designee, for the number of shares to which
such Holder is entitled pursuant to such exercise. No fractional shares of Common Stock are to be issued upon the issuance of shares
in connection with the Early Conversion Payment, but rather the number shares to be issued shall be rounded up or down to the nearest
whole share. The Company shall pay any and all taxes which may be payable with respect to the issuance and delivery of Dividend
Shares. Accrued interest on Notes surrendered for conversion in connection with an Early Conversion Payment shall be paid in the
form of cash, regardless of the payment method chosen by the Company for the Early Conversion Payment. Notwithstanding the foregoing,
if a Holder elects to convert Notes on or after the effective time of a Make-Whole Fundamental Change, such Holder will not be
entitled to receive the Early Conversion Payment but instead shall receive Additional Shares, if any, pursuant to Section 6.08.
However, on conversion of the Notes prior to the effective time of the Make-Whole Fundamental Change, the Holder shall be entitled
to receive the Early Conversion Payment.


 


(d)          At
or before each Interest Payment Date, the Company shall provide notice to the Trustee, the Conversion Agent and the Holders of
its election to pay the Early Conversion Payment either in cash or in shares of Common Stock for future conversions of the Notes
in the period between such Interest Payment Date and the next Interest Payment Date.


 


(e)          Provisions
of this Indenture that apply to conversion of all of a Note also apply to conversion of a portion of a Note.


 


(f)          A
Holder of Notes is not entitled to any rights of a holder of shares of Common Stock until such Holder has converted its Notes,
and only to extent such Notes are deemed to have been converted into shares of Common Stock pursuant to this Article 6.


 


Section 6.02         Conversion
Procedure.


 


(a)          Each
Note shall be convertible at the office of the Conversion Agent.


 






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(b)          In
order to exercise the conversion right with respect to any interest in Global Notes, the Holder must complete the appropriate instruction
form for conversion pursuant to the Depositary’s book-entry conversion program, furnish appropriate endorsements and transfer
documents if required by the Company or the Trustee or Conversion Agent, and pay the funds, if any, required by Section 6.03(c)
and any transfer taxes or duties if required pursuant to Section 6.09. However, no service charge will be imposed by the Company,
the Trustee or the Registrar for any registration of transfer or exchange of notes except in compliance with the below provisions
governing exercise of conversion rights. In order to exercise the conversion right with respect to any Physical Notes, the Holder
of any such Notes to be converted, in whole or in part, shall:


 


(i)          complete
and manually sign the conversion notice provided on the back of the Note (the “Conversion Notice”) facsimile
of the conversion notice, or an electronic version of the conversion notice, each of which shall be irrevocable, and deliver such
notice to a Conversion Agent;


 


(ii)         surrender
the Note to a Conversion Agent;


 


(iii)        furnish
appropriate endorsements and transfer documents,


 


(iv)        if
required pursuant to Section 6.09, pay any transfer taxes or duties; and


 


(v)         if
required, pay funds equal to interest payable on the next Interest Payment Date to which the Holder is not entitled as required
by Section 6.03(c).


 


The date on which the Holder satisfies all
of the applicable requirements set forth above is the “Conversion Date.”


 


(c)          On
the third Trading Day immediately following the Conversion Date (the “Conversion Share Delivery Date”), the
Company shall issue and shall deliver to the converting Holder, a certificate or certificates for the number of shares of Common
Stock issuable in respect of such conversion in accordance with the provisions of this Article 6, the Early Conversion Payment,
if applicable, and cash in lieu of any fractional share. In case any Notes of a denomination greater than $1,000 shall be surrendered
for partial conversion, the Company shall execute and the Trustee shall authenticate and deliver to the Holder of the Notes so
surrendered, without charge to such Holder, new Notes in authorized denominations in an aggregate Principal Amount equal to the
unconverted portion of the surrendered Notes.


 


Each conversion shall be deemed to have
been effected as to any such Notes (or portion thereof) on the date on which the requirements set forth above in Section 6.01(b)
have been satisfied as to such Notes (or portion thereof) and the Person in whose name any certificate or certificates for shares
of Common Stock shall be issuable upon such conversion shall be deemed to have become, as of the Close of Business on the relevant
Conversion Date that such Holder converted the Notes, the holder of record of the shares of Common Stock represented thereby.


 


(d)          Upon
the conversion of an interest in a Global Note, the Trustee shall make a notation on such Global Note as to the reduction in the
Principal Amount represented thereby. The Company shall notify the Trustee in writing of any conversions of Notes effected through
any Conversion Agent other than the Trustee.


 


(e)          Each
share certificate representing Common Stock issued upon conversion of the Notes that are Restricted Notes shall bear the Restricted
Stock Legend as set forth in Section 3.07.


 




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Section 6.03         Settlement
upon Conversion.


 


(a)          With
respect to any conversion of Notes, if any, the Company shall, subject to the provisions of this Article 6 (including Section 6.04(a)),
deliver to converting Holders, in respect of each $1,000 Principal Amount of Notes being converted, a number of shares of Common
Stock equal to the Applicable Conversion Rate, on the third Trading Day immediately following the relevant Conversion Date, together
with the Early Conversion Payment, if applicable.


 


(b)          Upon
conversion, Holders shall receive a payment for accrued and unpaid interest, and Additional Interest, if any, on each Holder’s
Note to, but excluding, the Conversion Date (in the form of shares of Common Stock or cash based on the payment method chosen by
the Company for the Early Conversion Payment).


 


(c)          Notwithstanding
anything to the contrary, the payment of accrued interest shall be made solely in cash (1) in connection with any Make-Whole Fundamental
Change, if the related repurchase date is after a Regular Record Date and on or prior to the scheduled Trading Day immediately
following the date on which the corresponding interest payment is made, (2) with respect to all Notes, if any, surrendered for
conversion for which an Early Conversion Payment shall be received in the form of cash and (3) on the final Interest Payment Date.
For the avoidance of doubt, all Holders on the Regular Record Date immediately preceding an Interest Payment Date (or any repurchase
date related to a Make-Whole Fundamental Change ) will receive the full interest payment on the Interest Payment Date or date of
repurchase related to a Make-Whole Fundamental Change regardless of whether their Notes have been converted following such Regular
Record Date.


 


(d)          The
Company shall not issue fractional shares upon conversion of Notes. If multiple Notes shall be surrendered for conversion at one
time by the same Holder, the number of full shares which shall be issuable upon conversion shall be computed on the basis of the
aggregate Principal Amount of the Notes (or specified portions thereof to the extent permitted hereby) so surrendered. If any fractional
share would be issuable upon the conversion of any Notes, the Company shall round up or down, as appropriate, to the nearest whole
number.


 


(e)          By
delivery to the Holder of the full number of shares of Common Stock and the Early Conversion Payment, if applicable, issuable upon
conversion, the Company will be deemed to satisfy in full its obligation to pay the Principal Amount of the Notes. In addition
to the Early Conversion Payment, on conversion of a Note, the Holder will receive a payment of accrued and unpaid interest, and
Additional Interest, if any, on such Holder’s Note to, but excluding, the Conversion date (in the form of shares of Common
Stock or cash based on the payment method chosen by the Company for the Early Conversion Payment).


 




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Section 6.04         Limitations
on Issuance of Shares Due to Market Regulation.


 


(a)          Notwithstanding
anything to the contrary in this Indenture or in the Notes, the Company shall not be obligated to issue shares of Common Stock
upon conversion of the Notes in connection with an Early Conversion Payment or otherwise, and shall not be entitled to issue shares
of Common Stock in connection with any anti-dilution terms described hereunder, to the extent (and only to the extent) the issuance
of such shares of Common Stock, would exceed that aggregate number of shares of Common Stock which the Company may issue, in the
aggregate, pursuant to the terms of all Notes and Warrants without breaching the Company’s obligations under the rules or
regulations of the Principal Market (the number of shares which may be issued without violating such rules and regulations, including
rules related to the aggregate of offerings under NASDAQ Listing Rule 5635(d), the “Exchange Cap”), except that
such limitation shall not apply in the event that the Company (A) obtains and delivers written notice to the Trustee and the Conversion
Agent of the approval of its stockholders as required by the applicable rules of the Principal Market for issuances of shares of
Common Stock upon conversion or exercise (as the case may be) of the Notes and the Warrants or otherwise pursuant to the terms
of this Indenture and the Warrant Agreement in excess of such amount or (B) obtains and delivers written notice to the Trustee
and the Conversion Agent of a written confirmation from the Principal Market that such approval is not required. Until such approval
or such written confirmation is obtained, no Holder shall be issued in the aggregate, upon conversion or exercise (as the case
may be) of any Notes or any of the Warrants or otherwise pursuant to the terms of this Note or under the Warrant Agreement, shares
of Common Stock in an amount greater than the product of (i) the Exchange Cap multiplied by (ii) the quotient of (A) the aggregate
number of shares of Common Stock underlying the Notes and Warrants initially purchased by such Holder from the Initial Purchaser
on, and determined as of, the Issue Date (for clarity, as if the Notes and Warrants had been converted and exercised in full on
the Issue Date, prior to any adjustments that may later occur with respect to the applicable conversion or exercise price) divided
by (B) the aggregate number of shares of Common Stock underlying the all Notes and all Warrants initially purchased by all
Holders from the Initial Purchaser on, and determined as of, the Issue Date (for clarity, as if the Notes and Warrants had been
converted and exercised in full on the Issue Date, prior to any adjustments that may later occur with respect to the applicable
conversion or exercise price) (with respect to each Holder, the “Exchange Cap Allocation”). In the event that
any Holder shall sell or otherwise transfer any of such Holders Notes, the transferee shall be allocated a pro rata portion of
such Holder’s Exchange Cap Allocation based on the relative number of underlying shares determined as of the Issue Date with
respect to such portion of such Notes and any Warrants so transferred, and the restrictions of the prior sentence shall apply to
such transferee with respect to the portion of the Exchange Cap Allocation so allocated to such transferee.  Upon conversion
and exercise in full of a Holder’s Notes and Warrants, the difference (if any) between such Holder’s Exchange Cap Allocation
and the number of shares of Common Stock actually issued to such Holder upon such Holder’s conversion in full of such Holder’s
Notes and exercise in full of such Warrants shall be allocated to the respective Exchange Cap Allocations of the remaining holders
of Notes and Warrants on a pro rata basis in proportion to the shares of Common Stock then underlying the Notes and Warrants held
by each such Holder and holders of Warrants at such time.  In the event that the Company is prohibited from issuing shares
of Common Stock pursuant to this Section 6.04 or as a result of lacking sufficient authorized capital stock (the “Exchange
Cap/Underauthorized Shares”), the Company shall pay cash in exchange for the cancellation of such shares of Common Stock
at a price equal to the product of (x) such number of Exchange Cap/Underauthorized Shares and (y) the simple average of the daily
VWAP for Common Stock for the ten consecutive VWAP Trading Days ending on and included the VWAP Trading Day immediately prior to
the Conversion Date (the “Exchange Cap Share Cancellation Amount”); provided, that no Exchange Cap Share Cancellation
Amount shall be due and payable to the Holder to the extent that (x) (i) on or prior to the applicable Conversion Share Delivery
Date in the case of an issuance being prohibited due to the Exchange Cap under this Section 6.04, the Exchange Cap Allocation of
a Holder is increased (whether by assignment by a holder of Notes and/or Warrants or all, or any portion, of such holder's Exchange
Cap Allocation or otherwise) (an “Exchange Cap Allocation Increase”) or (ii) in the case of a failure to have
sufficient authorized capital stock, such failure is cured (“Authorized Capital Increase”), (y) after giving
effect to such Exchange Cap Allocation Increase or Authorized Capital Increase, as applicable, the Company delivers the applicable
Exchange Cap/Underauthorized Shares to the Holder (or its designee) on or prior to the applicable Conversion Share Delivery Date
or (z) in connection with an Early Conversion Payment (or a Redemption/Early Exercise Share Payment) that was required to be paid
in cash because the Exchange Cap (or Redemption/Early Exercise Share Payment) precluded a payment in stock (and therefore the payment
was due in cash pursuant to the Early Conversion Payment.  For the avoidance of any doubt, the term Holder for the purposes
of this Section 6.04(a) includes any beneficial interest holder in the case of any Notes represented by a Global Note and any Warrants
represented by a Global Warrant where such instruments are registered in the name of a Depositary or a nominee thereof.  BY
ITS ACQUISITION HEREOF OR OF A BENEFICIAL INTEREST HEREIN, THE ACQUIRER AGREES IT WILL NOT CONVERT OR EXERCISE THE NOTES OR WARRANTS
IN CONTRAVENTION OF THIS PARAGRAPH.


 




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(b)          The
Company shall provide each stockholder entitled to vote at a special or annual meeting of stockholders of the Company (the “Stockholder
Meeting”), which shall be promptly called and held not later than January 15, 2017 (the “Stockholder Meeting
Deadline”), a proxy statement soliciting each such stockholder’s affirmative vote at the Stockholder Meeting for
approval of resolutions (“Stockholder Resolutions”) providing for issuance of the Conversion Shares and shares
underlying the Warrants in compliance with the rules and regulations of the Principal Market (collectively, the “Stockholder
Approval”, and the date the Stockholder Approval is obtained, the “Stockholder Approval Date”), and
the Company shall use its reasonable best efforts to solicit its stockholders’ approval of such resolutions and to cause
the Board of Directors of the Company to recommend to the stockholders that they approve such resolutions. The Company shall be
obligated to seek to obtain the Stockholder Approval by the Stockholder Meeting Deadline. If, despite the Company's reasonable
best efforts the Stockholder Approval is not obtained on or prior to the Stockholder Meeting Deadline, the Company shall cause
an additional Stockholder Meeting to be held on or prior to May 15, 2017. If, despite the Company's reasonable best efforts the
Stockholder Approval is not obtained after such subsequent stockholder meetings, the Company shall cause an additional Stockholder
Meeting to be held annually thereafter until such Stockholder Approval is obtained.


 


(c)          Notwithstanding
anything to the contrary contained herein, the Company shall not effect the exercise of any Note, and no Holder shall have the
right to exercise any Note, and any such exercise shall be null and void and treated as if never made, and the Company shall not
be entitled to issue shares of Common Stock in connection with any anti-dilution terms described hereunder, to the extent that
after giving effect to such exercise, the Holder together with the other Attribution Parties collectively would beneficially own
in excess of 4.99% (the “Maximum Percentage”) of the shares of Common Stock outstanding immediately after giving
effect to such exercise. For purposes of the foregoing sentence, the aggregate number of shares of Common Stock beneficially owned
by such Holder and the other Attribution Parties shall include the number of shares of Common Stock held by the Holder and all
other Attribution Parties plus the number of shares of Common Stock issuable upon exercise of all such Holder’s Notes with
respect to which the determination of such sentence is being made, but shall exclude shares of Common Stock which would be issuable
upon (A) exercise of the remaining, unconverted portion of this Note beneficially owned by the Holder or any of the other Attribution
Parties and (B) exercise or conversion of the unexercised or unconverted portion of any Warrants or any other securities of the
Company (including, without limitation, any convertible notes or convertible preferred stock or warrants, including other Notes)
beneficially owned by the Holder or any other Attribution Party subject to a limitation on conversion or exercise analogous to
the limitation contained in this Section 6.04(c). For purposes of this Section 6.04(c), beneficial ownership shall be calculated
in accordance with Section 13(d) of the Exchange Act.


 




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(d)          For
purposes of determining the number of outstanding shares of Common Stock the Holder may acquire upon the conversion of a Note without
exceeding the Maximum Percentage, such Holder may rely on the number of outstanding shares of Common Stock as reflected in (x)
the Company’s most recent Annual Report on Form 10-K, Quarterly Report on Form 10-Q, Current Report on Form 8-K or other
public filing with the SEC, as the case may be, or (y) any other written notice by the Company, if any, setting forth the number
of shares of Common Stock outstanding (the “Reported Outstanding Share Number”). If the Company receives an
Conversion Notice from a Holder at a time when the actual number of outstanding shares of Common Stock is less than the Reported
Outstanding Share Number, the Company shall (i) notify the Holder in writing of the number of shares of Common Stock then outstanding
and, to the extent that such Conversion Notice would otherwise cause the Holder’s beneficial ownership, as determined pursuant
to this Section 6.04(d), to exceed the Maximum Percentage, the Holder must notify the Company of a reduced number of shares of
Common Stock to be acquired pursuant to such Conversion Notice (the number of shares by which such purchase is reduced, the “Reduction
Shares”) and (ii) as soon as reasonably practicable, the Company shall return to the Holder any Notes that were to be
converted into the Reduction Shares. For any reason at any time, upon the written or oral request of a Holder the Company shall
within one (1) Business Day confirm orally and in writing or by electronic mail to such 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 any Warrants and Notes, by the Holder and any other Attribution
Party since the date as of which the Reported Outstanding Share Number was reported. In the event that the issuance of shares of
Common Stock to the Holder upon conversion of a Note results in the Holder and the other Attribution Parties being deemed to beneficially
own, in the aggregate, more than the Maximum Percentage of the number of outstanding shares of Common Stock (as determined under
Section 13(d) of the Exchange Act), the number of shares so issued by which the Holder’s and the other Attribution Parties’
aggregate beneficial ownership exceeds the Maximum Percentage (the “Excess Shares”) shall be deemed null and
void and shall be cancelled ab initio, and the Holder shall not have the power to vote or to transfer the Excess Shares. As soon
as reasonably practicable after the issuance of the Excess Shares has been deemed null and void, the Company shall return to the
Holder the Notes that were to be converted into the Excess Shares.


 




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(e)          Upon
delivery of a written notice to the Company, a Holder may from time to time increase (with such increase not effective until the
sixty-first (61st) day after delivery of such notice) or decrease the Maximum Percentage to any other percentage not in excess
of 9.99% as specified in such notice; provided that (i) any such increase in the Maximum Percentage will not be effective until
the sixty-first (61st) day after such notice is delivered to the Company and (ii) any such increase or decrease will apply only
to such Holder and the other Attribution Parties and not to any other Holder that is not an Attribution Party of the Holder delivering
such notice.


 


(f)          For
purposes of clarity, the shares of Common Stock issuable pursuant to the terms of any Warrant in excess of the Maximum Percentage
shall not be deemed to be beneficially owned by the Holder for any purpose including for purposes of Section 13(d) or Rule 16a-1(a)(1)
of the Exchange Act. No prior inability to convert this Note pursuant to this Section 6.04(c) through (g) shall have any effect
on the applicability of the provisions of Section 6.04(c) through (g) with respect to any subsequent determination of exercisability.
The provisions of Section 6.04(c) through (g) shall be construed and implemented in a manner otherwise than in strict conformity
with the terms of this Section 6.04(c) through (g) to the extent necessary to correct this Section 6.04(c) through (g) or any portion
of Section 6.04(c) through (g) which may be defective or inconsistent with the intended beneficial ownership limitation contained
in this Section 6.04(c) through (g) or to make changes or supplements necessary or desirable to properly give effect to such limitation.


 


(g)          For
the avoidance of any doubt, the term Holder for the purposes of Section 6.04(a) includes any beneficial interest holder in the
case of any Notes represented by a Global Note where such instrument is registered in the name of a Depositary or a nominee thereof.


 


(h)          Neither
the Trustee nor the Conversion Agent shall have any duty to monitor whether the Exchange Cap has been reached or to monitor the
Company’s or any Holder’s compliance with this Section 6.04.


 


Section 6.05         Adjustment
of Conversion Rate. The Conversion Rate shall be adjusted from time to time by the Company if any of the following events occurs
as described below, except that the Company will not make any adjustment to the Conversion Rate if Holders of Notes participate
(other than in the case of a share split or share combination), at the same time and on the same terms as holders of shares of
Common Stock, solely as a result of holding the Notes, in any of the transactions described in this Section 6.05, without having
to convert their Notes, as if such Holders held a number of shares of Common Stock equal to the Applicable Conversion Rate in effect
immediately prior to the adjustment thereof in respect of such transaction, multiplied by the Principal Amount of Notes
held by such Holders, divided by $1,000; provided, in no case under this Section 6.05 will the Conversion Price be reduced
to a price that would result in shares of Common Stock being issued below the par value per share thereof.


 




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(a)          If
the Company issues shares of Common Stock as a dividend or distribution on the Common Stock, or the Company effects a share split
or share combination, the Conversion Rate will be adjusted based on the following formula:


  


	CR1	=	CR0	x	OS1
	 	 	 	 	OS0


 


where,


 


	 	CR0 =	the Conversion Rate in effect immediately prior to the Open of Business on the Ex-Dividend Date of such dividend or distribution, or immediately prior to the Open of Business on the effective date of such share split or share combination, as applicable;
	 	 	 
	 	CR1 =	the Conversion Rate in effect immediately after the Open of Business on such Ex-Dividend Date or effective date;
	 	 	 
	 	OS0 =	the number of shares of Common Stock outstanding immediately prior to the Open of Business on such Ex-Dividend Date or effective date; and
	 	 	 
	 	OS1 =	the number of shares of Common Stock outstanding immediately after giving effect to such dividend, distribution, share split or share combination.


 


Any adjustment made pursuant to this Section
6.05(a) will become effective immediately after the Open of Business on the Ex-Dividend Date for such dividend or distribution,
or immediately after the Open of Business on the effective date for such share split or share combination, as applicable. If any
dividend or distribution of the type described in this Section 6.05(a) is declared but not so paid or made, the Conversion Rate
will be immediately readjusted, effective as of the date the Board of Directors determines not to pay such dividend or distribution,
to the Conversion Rate that would then be in effect if such dividend or distribution had not been declared or announced. For the
avoidance of doubt, if the application of the foregoing formula would result in a decrease in the Conversion Rate, no adjustment
to the Conversion Rate will be made (other than (i) as a result of a reverse share split or share combination or (ii) with respect
to the Company’s right to readjust the Conversion Rate as described in the immediately preceding sentence).


 


(b)          If
the Company issues or sells shares of Common Stock (including shares of Common Stock deemed to be issued pursuant to the fourth
paragraph of this Section 6.05(b)) in a Qualified Financing at a price per share less than the Applicable Conversion Price on the
Trading Day immediately preceding such issuance or sale, the Conversion Rate will be adjusted based on the following formula:


 


	
        CR1 =
CR0 x
	(OS0  + X)
	(OS0  + Y)


 


where,


 


	 	CR0 =	the Conversion Rate in effect immediately prior to the Open of Business on the date of such issuance or sale (or deemed issuance);
	 	 	 
	 	CR1=	the Conversion Rate in effect immediately after the Open of Business on the date of such issuance or sale (or deemed issuance);


 




    	 	65	 



     


    

  


	 	OS =	the number of shares of Common Stock outstanding immediately prior to the Open of Business on the date of such issuance or sale (or deemed issuance);
	 	 	 
	 	X =	the total number of shares of Common Stock issued or sold (or deemed issued) on such date; and
	 	 	 
	 	Y =	the number of shares of Common Stock equal to the quotient of (A) the aggregate purchase price of the shares of Common Stock issued or sold (or deemed issued) and (B) the Conversion Price of the Notes on the Trading Day immediately preceding such issuance or sale (or deemed issuance).


 


For the purpose of the above calculation,
the number of shares of Common Stock outstanding immediately prior to the Open of Business on the date of such issuance or sale
shall be calculated on a fully diluted basis, as if all then outstanding options, warrants and other convertible securities had
been fully exercised or converted (and the resulting securities fully converted into shares of Common Stock, if so convertible)
as of such date.


 


Any adjustment made pursuant to this Section
6.05(b) shall become effective immediately following the Open of Business on the date of such issuance or sale. If Section 6.05(a),
(c) or (d) applies to any distribution of shares of Common Stock or Notes, this Section 6.05(b) shall not apply to such distribution.
In no event shall the Conversion Rate be decreased pursuant to this Section 6.05(b).


 


In the event the Company at any time or
from time to time after the Issue Date shall issue any options or convertible securities or shall fix a record date for the determination
of holders of any class of securities then entitled to receive any such options or convertible securities, then the maximum number
of shares (as set forth in the instrument relating thereto without regard to any provisions contained therein designed to protect
against dilution) of Common Stock issuable upon the exercise of such options or, in the case of convertible securities and options
therefor, the conversion or exchange of such convertible securities, shall be deemed to be shares of Common Stock issued as of
the time of such issuance or, in case such a record date shall have been fixed, as of the Close of Business on such record date
provided, however, that in any such case in which shares of Common Stock are deemed to be issued no further adjustments
to the Conversion Rate shall be made upon the subsequent issue of shares of Common Stock upon the exercise of such options or conversion
or exchange of such convertible securities. The consideration per share received by the Company for shares of Common Stock deemed
to have been issued pursuant to this paragraph relating to options and convertible securities shall be determined by dividing:


 


		(1)	the total amount, if any, received or receivable by the
Company as consideration for the issuance of such options or convertible securities, plus the minimum aggregate amount of additional
consideration (as set forth in the instruments relating thereto, without regard to any provision contained therein designed to
protect against dilution) payable to the Company upon the exercise of such options or the conversion or exchange of such convertible
securities, or in the case of options for convertible securities, the exercise of such options for convertible securities and
the conversion or exchange of such convertible securities, by



 




    	 	66	 



     


    

 


		(2)	the maximum number of shares of Common Stock (as set forth
in the instruments relating thereto, without regard to any provision contained therein designed to protect against the dilution)
issuable upon the exercise of such options or conversion or exchange of such convertible securities, or in the case of options
for convertible securities, the exercise of such options for convertible securities and the conversion or exchange of such convertible
securities.



 


Notwithstanding the foregoing, if the terms of any option or
convertible security, the issuance of which resulted in an adjustment to the Conversion Rate of the Notes pursuant to this subsection
6.05(b), are revised as a result of an amendment to such terms or any other adjustment pursuant to the provisions of such option
or convertible security (but excluding automatic adjustments to such terms pursuant to anti-dilution or similar provisions of such
option or convertible security) to provide for either (i) any increase or decrease in the number of shares of Common Stock issuable
upon the exercise, conversion and/or exchange of any such option or convertible security or (ii) any increase or decrease in the
consideration payable to the Company upon such exercise, conversion and/or exchange, then effective upon such increase or decrease
becoming effective, the conversion rate of the notes computed upon the original issue of such option or convertible security (or
upon the occurrence of a record date with respect thereto) shall be readjusted to such Conversion Rate as would have obtained had
such revised terms been in effect upon the original date of issuance of such option or convertible security; provided, however,
that any adjustments to the conversion rate pursuant to this paragraph shall not be effective with respect to any Notes that have
been converted prior to the date of any of the actions described in this paragraph.


 


(c)          If
the Company distributes to all or substantially all holders of shares of Common Stock any rights, options or warrants entitling
them for a period of not more than 60 calendar days after the date of such distribution to subscribe for or purchase shares of
Common Stock, at a price per share less than the average of the Last Reported Sale Prices of the Common Stock over the 10 consecutive
Trading Day period ending on, and including, the Trading Day immediately preceding the date of announcement of such distribution,
the Conversion Rate will be increased based on the following formula:


 


	CR1	=	CR0	x	OS0 + X
	 	 	 	 	OS0 + Y


 


where,


 


	 	CR0 =	the Conversion Rate in effect immediately prior to the Open of Business on the Ex-Dividend Date for such distribution;
	 	 	 
	 	CR1 =	the Conversion Rate in effect immediately after the Open of Business on such Ex-Dividend Date;
	 	 	 
	 	OS =	the number of shares of Common Stock outstanding immediately prior to the Open of Business on such Ex-Dividend Date;
	 	 	 
	 	X =	the total number of shares of Common Stock issuable pursuant to such rights, options or warrants; and


 




    	 	67	 



     


    

  


	 	Y =	the number of shares of Common Stock equal to the aggregate price payable to exercise such rights, options or warrants divided by the average of the Last Reported Sale Prices of the Common Stock over the 10 consecutive Trading Day period ending on, and including, the Trading Day immediately preceding the date of announcement of the distribution of such rights, options or warrants.


 


The foregoing increase in the Conversion
Rate will be successively made whenever any such rights, options or warrants are distributed and will become effective immediately
after the Open of Business on the Ex-Dividend Date for such distribution. If such rights, options or warrants are not so distributed,
the Conversion Rate will be immediately decreased to the Conversion Rate that would then be in effect if such Ex-Dividend Date
for such distribution had not occurred. In addition, to the extent that shares of Common Stock are not delivered after the expiration
of such rights, options or warrants, the Conversion Rate will be immediately decreased to the Conversion Rate that would then be
in effect had the increase made for the distribution of such rights, options or warrants been made on the basis of delivery of
only the number of shares of Common Stock actually delivered. For the avoidance of doubt, if the application of the foregoing formula
would result in a decrease in the Conversion Rate, no adjustment to the Conversion Rate will be made (other than with respect to
the Company’s right to readjust the Conversion Rate as described in the two immediately preceding sentences).


 


In determining whether any rights, options
or warrants entitle the holders of shares of Common Stock to subscribe for or purchase shares of Common Stock at less than such
average of the Last Reported Sale Prices of Common Stock over the 10 consecutive Trading Day period ending on, and including, the
Trading Day immediately preceding the date of announcement of such distribution, and in determining the aggregate offering price
of such shares of Common Stock, there will be taken into account any consideration received by the Company for such rights, options
or warrants and any amount payable upon exercise or conversion thereof, the value of such consideration, if other than cash, to
be determined by the Board of Directors.


 


(d)          If
the Company distributes shares of its Capital Stock, evidences of its indebtedness, other assets or property of the Company or
rights, options or warrants to acquire the Company’s Capital Stock or other securities (the “Distributed Property”),
to all or substantially all holders of shares of Common Stock, excluding:


 


(i)          dividends
or distributions of Common Stock or rights, options or warrants as to which an adjustment was effected pursuant to Section 6.05(a)
or Section 6.05(b), as the case may be;


 


(ii)         dividends
or distributions paid exclusively in cash as to which an adjustment was effected pursuant to Section 6.05(e); and


 


(iii)        Spin-Offs
to which the provisions set forth below in this Section 6.05(d) will apply;


 


then the Conversion Rate will be increased
based on the following formula:


 


	CR1	=	CR0	x	SP0
	 	 	 	 	SP0 - FMV


 




    	 	68	 



     


    

 


where,


 


	 	CR0 =	the Conversion Rate in effect immediately prior to the Open of Business on the Ex-Dividend Date for such distribution;
	 	 	 
	 	CR1 =	the Conversion Rate in effect immediately after the Open of Business on such Ex-Dividend Date;
	 	 	 
	 	SP0 =	the average of the Last Reported Sale Prices of the Common Stock over the 10 consecutive Trading Day period ending on, and including, the Trading Day immediately preceding the Ex-Dividend Date for such distribution; and
	 	 	 
	 	FMV=	the Fair Market Value (as determined by the Board of Directors) of the Distributed Property distributed with respect to each outstanding share of Common Stock on the Ex-Dividend Date for such distribution;


 


provided that if “FMV” as set forth above
is equal to or greater than “SP0” as set forth above, in lieu of the foregoing increase, adequate provision
will be made so that each Holder of a Note will receive on the date on which the Distributed Property is distributed to holders
of the Common Stock, for each $1,000 Principal Amount of the Notes, the amount and kind of Distributed Property that such Holder
would have received had such Holder owned a number of shares of Common Stock equal to the Conversion Rate on the Ex-Dividend Date
for such distribution; provided further that if the Board of Directors determines “FMV” for purposes of the
foregoing increase by reference to the actual or when-issued trading market for any securities, it must in doing so consider the
prices in such market over the same period used in computing the average of the Last Reported Sale Prices of the Common Stock for
purposes of determining “SP0” as set forth above.


 


Such increase in the Conversion Rate made
pursuant to the immediately preceding paragraph will become effective immediately after the Open of Business on the Ex-Dividend
Date for such distribution. If such distribution is not so paid or made, the Conversion Rate will be decreased to be the Conversion
Rate that would then be in effect if such dividend or distribution had not been declared. For the avoidance of doubt, if the application
of the foregoing formula would result in a decrease in the Conversion Rate, no adjustment to the Conversion Rate will be made (other
than with respect to the Company’s right to readjust the Conversion rate as described in the immediately preceding sentence).


 


With respect to an adjustment pursuant to
this Section 6.05(d) where there has been a payment of a dividend or other distribution on the Common Stock of shares of Capital
Stock of any class or series, or similar equity interest, of or relating to a Subsidiary, or other business unit or Affiliate,
of the Company, where such Capital Stock or similar equity interest is listed or quoted (or will be listed or quoted upon consummation
of the Spin-Off) on a major U.S. or non-U.S. securities exchange (a “Spin-Off”), the Conversion Rate will be
increased based on the following formula:


 


	CR1	=	CR0	x	FMV0 + MP0
	 	 	 	 	MP0


 




    	 	69	 



     


    

 


where


 


	 	CR0 =	the Conversion Rate in effect immediately prior to the end of the Valuation Period;
	 	 	 
	 	CR1 =	the Conversion Rate in effect immediately after the end of the Valuation Period;
	 	 	 
	 	FMV0	= the average of the Last Reported Sale Prices of the Capital Stock or similar equity interest distributed to holders of shares of Common Stock applicable to one share of Common Stock (determined for purposes of the definition of “Last Reported Sale Price” (i) as if such Capital Stock or similar equity interest were Common Stock, (ii) by reference to such major non-U.S. securities exchange, if applicable, and (iii) by converting such Last Reported Sales Price into U.S. dollars, if applicable) over the first 10 consecutive Trading Day period after, and including, the Ex-Dividend Date of the Spin-Off (the “Valuation Period”); and
	 	 	 
	 	MP0 =	the average of the Last Reported Sale Prices of the Common Stock over the Valuation Period.


 


The adjustment to the Conversion Rate under
the preceding paragraph will occur on the last Trading Day of the Valuation Period; provided that in respect of any conversion
during the Valuation Period, references with respect to 10 consecutive Trading Days will be deemed replaced with such lesser number
of Trading Days as have elapsed from, and including, the Ex-Dividend Date of such Spin-Off to, and including, and the Conversion
Date in determining the Applicable Conversion Rate. If any dividend or distribution that constitutes a Spin-Off is declared but
not so paid or made, the Conversion Rate will be immediately decreased, effective as of the date the Board of Directors determines
not to pay such dividend or distribution, to the Conversion Rate that would then be in effect if such dividend or distribution
had not been declared. For the avoidance of doubt, if the application of the foregoing formula would result in a decrease in the
Conversion Rate, no adjustment to the Conversion Rate will be made (other than with respect to the Company’s right to readjust
the Conversion Rate as described in the immediately preceding sentence).


 




    	 	70	 



     


    

 


For purposes of this Section 6.05(d) (and
subject in all respect to Section 6.13), rights, options or warrants distributed by the Company to all holders of the Common Stock
entitling them to subscribe for or purchase shares of the Company’s Capital Stock, including Common Stock (either initially
or under certain circumstances), which rights, options or warrants, until the occurrence of a specified event or events (“Trigger
Event”): (i) are deemed to be transferred with such Common Stock; (ii) are not exercisable; and (iii) are also issued
in respect of future issuances of Common Stock, shall be deemed not to have been distributed for purposes of this Section 6.05(d)
(and no adjustment to the Conversion Rate under this Section 6.05(d) will be required) until the occurrence of the earliest Trigger
Event, whereupon such rights, options or warrants shall be deemed to have been distributed and an appropriate adjustment (if any
is required) to the Conversion Rate shall be made under this Section 6.05. If any such right, option or warrant, including any
such existing rights, options or warrants distributed prior to the date of this Indenture, are subject to events, upon the occurrence
of which such rights, options or warrants become exercisable to purchase different securities, evidences of indebtedness or other
assets or property, then the date of the occurrence of any and each such event shall be deemed to be the date of distribution and
Ex-Dividend Date with respect to new rights, options or warrants with such rights (in which case the existing rights, options or
warrants shall be deemed to terminate and expire on such date without exercise by any of the holders thereof). In addition, in
the event of any distribution (or deemed distribution) of rights, options or warrants, or any Trigger Event or other event (of
the type described in the immediately preceding sentence) with respect thereto that was counted for purposes of calculating a distribution
amount for which an adjustment to the Conversion Rate under this Section 6.05(d) was made, (1) in the case of any such rights,
options or warrants that shall all have been redeemed or purchased without exercise by any holders thereof, upon such final redemption
or purchase (x) the Conversion Rate shall be readjusted as if such rights, options or warrants had not been issued and (y) the
Conversion Rate shall then again be readjusted to give effect to such distribution, deemed distribution or Trigger Event, as the
case may be, as though it were a cash distribution, equal to the per share of Common Stock redemption or purchase price received
by a holder or holders of shares of Common Stock with respect to such rights, options or warrants (assuming such holder had retained
such rights, options or warrants), made to all holders of shares of Common Stock as of the date of such redemption or purchase,
and (2) in the case of such rights, options or warrants that shall have expired or been terminated without exercise by any holders
thereof, the Conversion Rate shall be readjusted as if such rights, options and warrants had not been issued.


 


For purposes of Section 6.05(a), Section
6.05(c) and this Section 6.05(d), any dividend or distribution to which this Section 6.05(d) is applicable that also includes one
or both of:


 


(A)         a
dividend or distribution of shares of Common Stock to which Section 6.05(a) is applicable (the “Clause A Distribution”);
or


 


(B)         a
dividend or distribution of rights, options or warrants to which Section 6.05(c) is applicable (the “Clause B Distribution”),
then (1) such dividend or distribution, other than the Clause A Distribution and the Clause B Distribution, shall be deemed to
be a dividend or distribution to which this Section 6.05(d) is applicable (the “Clause C Distribution”) and
any adjustment to the Conversion Rate required by this Section 6.05(d) with respect to such Clause C Distribution shall then be
made, and (2) the Clause A Distribution and Clause B Distribution shall be deemed to immediately follow the Clause C Distribution
and any adjustment to the Conversion Rate required by Section 6.05(a) and Section 6.05(c) with respect thereto shall then be made,
except that, if determined by the Company (I) the “Ex-Dividend Date” of the Clause A Distribution and the Clause B
Distribution shall be deemed to be the Ex-Dividend Date of the Clause C Distribution and (II) any shares of Common Stock included
in the Clause A Distribution or Clause B Distribution shall be deemed not to be “outstanding immediately prior to the Open
of Business on such Ex-Dividend Date or immediately prior to the Open of Business on such effective date, as applicable”
within the meaning of Section 6.05(a) or “outstanding immediately prior to the Open of Business on such Ex-Dividend Date”
within the meaning of Section 6.05(c).


 


(e)          If
any cash dividend or distribution is paid or made to all or substantially all holders of shares of Common Stock, the Conversion
Rate shall be increased based on the following formula:


 


	CR1	=	CR0	x	SP0
	 	 	 	 	SP0 - C


 




    	 	71	 



     


    

 


where,


 


	 	CR0 =	the Conversion Rate in effect immediately prior to the Open of Business on the Ex-Dividend Date for such dividend or distribution;
	 	 	 
	 	CR1 =	the Conversion Rate in effect immediately after the Open of Business on the Ex-Dividend Date for such dividend or distribution;
	 	 	 
	 	SP0 =	the average of the Last Reported Sale Prices of the Common Stock over the 10 consecutive Trading Day period ending on, and including, the Trading Day immediately preceding the Ex-Dividend Date for such dividend or distribution; and
	 	 	 
	 	C =	the amount in cash per share the Company distributes to holders of shares of Common Stock.


 


The increase in the Conversion Rate under
this Section 6.05(e) will become effective immediately after the Open of Business on the Ex-Dividend Date for such dividend or
distribution. If such dividend or distribution is not so paid or made, the Conversion Rate will be immediately decreased, effective
as of the date the Board of Directors determined not to pay or make such dividend or distribution, to the Conversion Rate that
would then be in effect if such dividend or distribution had not been declared. For the avoidance of doubt, if the application
of the foregoing formula would result in a decrease in the Conversion Rate, no adjustment to the Conversion Rate will be made (other
than with respect to the Company’s right to readjust the Conversion Rate as described in the immediately preceding sentence).


 


Notwithstanding the foregoing, if “C”
(as defined above) is equal to or greater than “SP0” (as defined above), in lieu of the foregoing increase,
each Holder of a Note will receive, for each $1,000 Principal Amount of Notes, at the same time and upon the same terms as holders
of shares of Common Stock, the amount of cash that such Holder would have received if such Holder owned a number of shares of Common
Stock equal to the Conversion Rate in effect on the Ex-Dividend Date for such dividend or distribution.


 


(f)          If
the Company or any of its Subsidiaries makes a payment in respect of a tender offer or exchange offer for shares of Common Stock,
to the extent that the cash and value of any other consideration included in the payment per share of Common Stock exceeds the
average of the Last Reported Sale Prices of the Common Stock over the first 10 consecutive Trading Day period immediately following,
and including, the Trading Day next succeeding the last date on which tenders or exchanges may be made pursuant to such tender
offer or exchange offer, the Conversion Rate will be increased based on the following formula:


 


	CR1	=	CR0	x	AC + (SP1 x OS1)
	 	 	 	 	OS0 x SP1


 


where


 


	 	CR0 =	the Conversion Rate in effect immediately prior to the Close of Business on the 10th Trading Day immediately following, and including, the Trading Day next succeeding the date such tender offer or exchange offer expires;


 




    	 	72	 



     


    

  


	 	CR1 =	the Conversion Rate in effect immediately after the Close of Business on the 10th Trading Day immediately following, and including, the Trading Day next succeeding the date such tender offer or exchange offer expires;
	 	 	 
	 	AC =	the aggregate value of all cash and any other consideration (as determined by the Board of Directors) paid or payable for shares of Common Stock purchased in such tender offer or exchange offer;
	 	 	 
	 	OS0 =	the number of shares of Common Stock outstanding immediately prior to the date such tender offer or exchange offer expires (prior to giving effect to the purchase of all shares of Common Stock accepted for purchase or exchange in such tender offer of exchange offer);
	 	 	 
	 	OS1 =	the number of shares of Common Stock outstanding immediately after the date such tender offer or exchange offer expires (after giving effect to the purchase of all shares of Common Stock accepted for purchase or exchange in such tender offer or exchange offer); and
	 	 	 
	 	SP1 =	the average of the Last Reported Sale Prices of Common Stock over the first 10 consecutive Trading Day period immediately following, and including, on the Trading Day next succeeding the date such tender offer or exchange offer expires.


 


The increase in the Conversion Rate under
this Section 6.05(f) shall occur at the Close of Business on the 10th Trading Day immediately following, and including, the Trading
Day next succeeding the date such tender offer or exchange offer expires but will be given effect immediately after the Close of
Business on the date such tender offer or exchange offer expires; provided that in respect of any conversion within the
first 10 consecutive Trading Day period immediately following, and including, the date any such tender offer or exchange offer
expires, references to 10 consecutive Trading Days will be deemed replaced with such lesser number of Trading Days as have elapsed
from, and including, the date such tender offer or exchange offer expires to, and including, the Conversion Date in determining
the Applicable Conversion Rate.


 


If the Company is obligated to purchase
shares of Common Stock pursuant to any such tender offer or exchange offer, but the Company is ultimately prevented by applicable
law from effecting all or any portion of such purchases or all such purchases are rescinded, the Conversion Rate will immediately
be readjusted to the Conversion Rate that would then be in effect if such tender offer or exchange offer had not been made or had
been made only in respect of the purchases that had been effected. For the avoidance of doubt, if the application of the foregoing
formula would result in a decrease in the Conversion Rate, no adjustment to the Conversion Rate will be made (other than with respect
to the Company’s right to readjust the Conversion Rate as described in the immediately preceding sentence).


 




    	 	73	 



     


    

 


(g)          In
addition to those Conversion Rate adjustments required by Sections 6.05(a), 6.05(c), 6.05(d), 6.05(e) and 6.05(f), and to the extent
permitted by the Exchange Cap and applicable law and subject to the applicable rules of The NASDAQ Global Select Market (including
Market Rule 5635) or, if applicable, any securities exchange on which the Company’s securities are then listed, the Company
from time to time (i) may increase the Conversion Rate by any amount for a period of at least 20 Business Days if the Board of
Directors determines that such increase would be in the Company’s best interest and (ii) may also (but is not required to)
increase the Conversion Rate to avoid or diminish any income tax to holders of shares of Common Stock or rights to purchase shares
of Common Stock in connection with any dividend or distribution of shares of Common Stock (or rights to acquire shares of Common
Stock) or similar event. Whenever the Conversion Rate is increased pursuant to this Section 6.05(g), the Company shall send to
Holders of record of the Notes (with a copy to the Trustee and the Conversion Agent as set forth in Section 6.05(j)) a notice of
the increase at least 5 days prior to the date the increased Conversion Rate takes effect, and such notice shall state the increased
Conversion Rate and the period during which it will be in effect.


 


(h)          The
Conversion Rate will not be adjusted, among other things:


 


(i)          upon
the issuance of any shares of Common Stock pursuant to any present or future plan providing for the reinvestment of dividends or
interest payable on the Company’s securities and the investment of additional optional amounts in shares of Common Stock
under any plan;


 


(ii)         upon
the issuance of any shares of Common Stock or options or rights to purchase those shares pursuant to any present or future employee
or director benefit plan or program of the Company, or assumed by the Company, or any of the Company’s Subsidiaries;


 


(iii)        upon
the issuance of any shares of Common Stock pursuant to any option, warrant, right or exercisable, exchangeable or convertible security
not described in clause (ii) above and outstanding as of the date the Notes were first issued, except as set forth in Section 6.13;


 


(iv)        upon
the repurchase of any shares of Common Stock pursuant to an open-market share repurchase program or other buy-back transaction
that is not a tender offer or exchange offer of the nature described in Section 6.05(f);


 


(v)         for
a change in the par value of the Common Stock; or


 


(vi)        for
accrued and unpaid interest, and Additional Interest, if any.


 


(i)          Adjustments
to the Conversion Rate under this Article 6 shall be calculated to the nearest cent or to the nearest one-ten thousandth (1/10,000th)
of a share of Common Stock. No adjustment shall be made to the Conversion Rate unless such adjustment would require a change of
at least 1% in the Applicable Conversion Rate. Any adjustment that would otherwise be required to be made shall be carried forward
and taken into account in any future adjustment. Notwithstanding the foregoing, upon any conversion of the Notes (solely with respect
to the Notes to be converted), the Company shall give effect to all adjustments that Company otherwise has deferred pursuant to
the immediately preceding sentence, and those adjustments will no longer be carried forward and taken into account in any future
adjustment.


 




    	 	74	 



     


    

 


(j)          Whenever
the Conversion Rate is adjusted as herein provided, the Company shall promptly file with the Trustee and any Conversion Agent an
Officers’ Certificate setting forth the Conversion Rate after such adjustment and setting forth a brief statement of the
facts requiring such adjustment. Unless and until a Trust Officer of the Trustee shall have received such Officers’ Certificate,
the Trustee shall not be deemed to have knowledge of any adjustment of the Conversion Rate and may assume without inquiry that
the last Conversion Rate of which it has knowledge is still in effect. Promptly after delivery of such certificate, the Company
shall prepare a notice of such adjustment of the Conversion Rate setting forth the adjusted Conversion Rate and the date on which
each adjustment became effective and shall send such notice of such adjustment of the Conversion Rate to each Holder at such Holder’s
last address appearing in the Register, within 20 days after execution thereof. Failure to deliver such notice shall not affect
the legality or validity of any such adjustment.


 


(k)          In
any case in which this Section 6.05 provides that an adjustment shall become effective immediately after a Record Date for an event,
the Company may defer until the occurrence of such event (i) issuing to the Holder of any Notes converted after such Record Date
and before the occurrence of such event the additional shares of Common Stock issuable upon such conversion by reason of the adjustment
required by such event over and above the Common Stock issuable upon such conversion before giving effect to such adjustment and
(ii) paying to such Holder any amount in cash in lieu of any fraction pursuant to Section 6.03.


 


(l)          For
purposes of this Section 6.05, the number of shares of Common Stock at any time outstanding shall not include shares held in the
treasury of the Company, so long as the Company does not pay any dividend or make any distribution on shares of Common Stock held
in the treasury of the Company, but shall include shares issuable in respect of scrip certificates issued in lieu of fractions
of shares of Common Stock.


 


Section 6.06         Effect
of Reclassification, Consolidation, Merger or Sale. In the case of (i) any recapitalization, reclassification or change of
the Common Stock (other than changes resulting from a subdivision or combination), (ii) any consolidation, merger or combination
involving the Company, (iii) any sale, lease or other transfer to a third party of the consolidated assets of the Company and its
Subsidiaries substantially as an entirety, or (iv) any statutory share exchange, in each case, as a result of which the Common
Stock would be converted into, or exchanged for, stock, other securities, other property or assets (including cash or any combination
thereof) (any such event, a “Merger Event”), then, at the effective time of the Merger Event, the Company or
the successor or purchasing company, as the case may be, shall execute with the Trustee a supplemental indenture permitted under
Section 13.01 providing for the right to convert each $1,000 Principal Amount of Notes into the kind and amount of shares of stock,
other securities or other property or assets (including cash or any combination thereof) that a holder of a number of shares of
Common Stock equal to the Conversion Rate immediately prior to such Merger Event would have owned or been entitled to receive (the
“Reference Property”) upon such Merger Event. If such Merger Event causes the Common Stock to be converted into
the right to receive more than a single type of consideration (determined based in part upon any form of shareholder election),
the Reference Property into which the Notes will be convertible will be deemed to be (i) the weighted average of the types and
amounts of consideration received by the holders of shares of Common Stock that affirmatively make such an election or (ii) if
no holders of Common Stock affirmatively make such an election, the types and amounts of consideration actually received by holders
of Common Stock. The Company shall notify Holders of the Notes of such weighted average (with a copy to the Trustee and Conversion
Agent) as soon as practicable after such determination is made. The Company shall not become a party to any Merger Event unless
its terms are consistent with the foregoing.


 




    	 	75	 



     


    

 


The Company shall cause notice of the execution
of such supplemental indenture to be mailed to each Holder, at the address of such Holder as it appears on the Register of the
Notes maintained by the Registrar, within 20 days after execution thereof. Failure to deliver such notice shall not affect the
legality or validity of such supplemental indenture. The above provisions of this Section shall similarly apply to successive reclassifications,
changes, consolidations, mergers, combinations, sales and conveyances. If this Section 6.06 applies to any event or occurrence,
Section 6.05 shall not apply.


 


Section 6.07         Adjustments
of Prices. Whenever any provision of this Indenture requires a calculation of the Last Reported Sale Prices or the Daily VWAP
over a span of multiple days (including with respect to the Share Price for purposes of a Make-Whole Fundamental Change), the Company
will make appropriate adjustments (to the extent no corresponding adjustment is otherwise made pursuant to the provisions described
in Section 6.05) determined by the Company or its agents to account for any adjustment to the Conversion Rate that becomes effective,
or any event requiring an adjustment to the Conversion Rate where the Ex-Dividend Date, Record Date, effective date or expiration
date, as the case may be, of the event occurs, at any time during the period during when Last Reported Sale Prices or the Daily
VWAP are to be calculated. Such adjustments will be effective as of the Ex-Dividend Date, Record Date, effective date or expiration
date, as the case may be, of the event causing the adjustment to the Conversion Rate.


 


Section 6.08         Adjustment
upon a Make-Whole Fundamental Change.


 


(a)          If
a Make-Whole Fundamental Change occurs and a Holder elects to convert its Notes in connection with such Make-Whole Fundamental
Change, the Company shall increase the Conversion Rate for the Notes so surrendered for conversion by a number of additional shares
of Common Stock (the “Additional Shares”) as described below. A conversion of Notes shall be deemed for these
purposes to be “in connection with” such Make-Whole Fundamental Change if the notice of conversion of the Notes is
received by the Conversion Agent during the period from, and including, the Effective Date of the Make-Whole Fundamental Change
up to, and including, the Business Day immediately prior to the related Fundamental Change Purchase Date (or, in the case of a
Make-Whole Fundamental Change that would have been a Fundamental Change but for the proviso in clause (2) of the definition thereof,
the 35th Trading Day immediately following the Effective Date of such Make-Whole Fundamental Change).


 


(b)          Upon
surrender of Notes for conversion in connection with a Make-Whole Fundamental Change, the Company shall deliver shares of Common
Stock, including the Additional Shares, as provided under Section 6.03, and subject to Section 6.04. If the consideration for the
shares of Common Stock in any Make-Whole Fundamental Change described in clause (2)(A) of the definition of Fundamental Change
is comprised entirely of cash, for any conversion of the Notes following the Effective Date of such Make-Whole Fundamental Change,
the conversion obligation will be calculated based solely on the Share Price for the transaction and will be deemed to be, per
$1,000 Principal Amount of Notes, an amount equal to the Applicable Conversion Rate (including any adjustment as described in this
Section 6.08) multiplied by such Share Price.


 




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(c)          The
number of Additional Shares, if any, by which the Conversion Rate will be increased will be determined by reference to the table
attached as Schedule A hereto, based on the date on which the Make-Whole Fundamental Change occurs or becomes effective
(the “Effective Date”) and the price (the “Share Price”) paid (or deemed paid) per share
of Common Stock in the Make-Whole Fundamental Change. If the holders of the shares of Common Stock receive only cash in a Make-Whole
Fundamental Change described in clause (2)(A) of the definition of Fundamental Change, the Share Price shall be the cash amount
paid per share of Common Stock. Otherwise, the Share Price shall be the average of the Last Reported Sale Prices of the Common
Stock over the five consecutive Trading Day period ending on, and including, the Trading Day immediately preceding the Effective
Date of such Make-Whole Fundamental Change.


 


(d)          The
Share Prices set forth in the column headings of the table in Schedule A hereto shall be adjusted as of any date on which
the Conversion Rate of the Notes is otherwise adjusted. The adjusted Share Prices shall equal the Share Prices immediately prior
to such adjustment, multiplied by a fraction, the numerator of which is the Conversion Rate immediately prior to such adjustment
giving rise to the Share Price adjustment and the denominator of which is the Conversion Rate as so adjusted. The number of Additional
Shares set forth in such table shall be adjusted in the same manner as the Conversion Rate as set forth in Section 6.05.


 


(e)          The
exact Share Prices and Effective Dates may not be set forth in the table in Schedule A, in which case:


 


(i)          If
the Share Price is between two Share Prices in the table or the Effective Date is between two Effective Dates in the table, the
number of Additional Shares by which the Conversion Rate will be increased will be determined by a straight-line interpolation
between the number of Additional Shares set forth for the higher and lower Share Prices and the earlier and later Effective Dates,
as applicable, based on a 365-day year.


 


(ii)         If
the Share Price is greater than $20.0 per share (subject to adjustment in the same manner and at the same time as the Share Prices
pursuant to Section 6.08(d)), no Additional Shares will be added to the Conversion Rate.


 


(iii)        If
the Share Price is less than $1.25 per share (subject to adjustment in the same manner and at the same time as the Share Prices
pursuant to Section 6.08(d)), no Additional Shares will be added to the Conversion Rate.


 


(f)          If
a Holder of Notes elects to convert its Notes prior to the Effective Date of any Make-Whole Fundamental Change, and the Make-Whole
Fundamental Change does not occur, such Holder shall not be entitled to an increased Conversion Rate in connection with such conversion.


 


(g)          The
Company shall notify Holders (with a copy to the Trustee and the Conversion Agent) of the Effective Date of any Make-Whole Fundamental
Change and issue a press release announcing such Effective Date no later than five Business Days after such Effective Date.


 




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Section 6.09         Taxes
on Shares Issued. Any issue of share certificates on conversions of Notes shall be made without charge to the converting Holder
for any documentary, transfer, stamp or any similar tax in respect of the issue thereof, and the Company shall pay any and all
documentary, stamp or similar issue or transfer taxes or duties that may be payable in respect of the issue or delivery of shares
of Common Stock on conversion of Notes pursuant hereto. The Company shall not, however, be required to pay any such tax which may
be payable in respect of any transfer involved in the issue and delivery of shares in any name other than that of the Holder of
any Notes converted, and the Company shall not be required to issue or deliver any such share certificate unless and until the
Person or Persons requesting the issue 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.


 


Section 6.10         Reservation
of Shares; Shares to be Fully Paid; Compliance with Governmental Requirements. The Company shall provide, free from preemptive
rights, out of its authorized but unissued shares or shares held in treasury, sufficient shares of Common Stock to provide for
the conversion of the Notes from time to time as such Notes are presented for conversion (assuming that, at the time of the computation
of such number of shares or securities, all such Notes would be held by a single Holder).


 


The Company covenants that all shares of
Common Stock that may be issued upon conversion of Notes shall be newly issued shares or treasury shares, shall be duly authorized,
validly issued, fully paid and non-assessable and shall be free from preemptive rights and free from any lien or adverse claim.


 


The Company shall use its reasonable efforts
to list or cause to have quoted any shares of Common Stock to be issued upon conversion of Notes on each national securities exchange
or over-the-counter or other domestic market on which the Common Stock is then listed or quoted.


 


Section 6.11         Responsibility
of Trustee and Conversion Agent. The Trustee and any other Conversion Agent shall not at any time be under any duty or responsibility
to any Holder to determine the Conversion Rate or whether any facts exist which may require any adjustment of the Conversion Rate,
or with respect to the nature or extent or calculation of any such adjustment when made, or with respect to the method employed,
or herein or in any supplemental indenture provided to be employed, in making the same. The Trustee and any other Conversion Agent
shall not be accountable with respect to the validity or value (or the kind or amount) of any Common Stock, or of any securities
or property, which may at any time be issued or delivered upon the conversion of any Notes; and the Trustee and any other Conversion
Agent make no representations with respect thereto. Neither the Trustee nor any Conversion Agent shall be responsible for any failure
of the Company to issue, transfer or deliver any shares of Common Stock or share certificates or other securities or property or
cash upon the surrender of any Notes for the purpose of conversion, with respect to Common Stock paid in connection with any Interest
Payment Date, or to comply with any of the duties, responsibilities or covenants of the Company contained in this Article 6. Without
limiting the generality of the foregoing, neither the Trustee nor any Conversion Agent shall be under any responsibility to determine
the correctness of any provisions contained in any supplemental indenture entered into pursuant to Section 6.06 relating either
to the kind or amount of shares of stock or securities or property (including cash) receivable by Holders upon the conversion of
their Notes after any event referred to in such Section 6.06 or to any adjustment to be made with respect thereto, but, subject
to the provisions of Section 10.01, may accept as conclusive evidence of the correctness of any such provisions, and shall be protected
in relying upon, the Officers’ Certificate (which the Company shall be obligated to file with the Trustee prior to the execution
of any such supplemental indenture) with respect thereto.


 




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Section 6.12         Notice
to Holders Prior to Certain Actions. In case:


 


(a)          the
Company shall declare a dividend (or any other distribution) on Common Stock that would require an adjustment in the Conversion
Rate pursuant to Section 6.05; or


 


(b)          the
Company shall authorize the granting to the holders of all or substantially all of the shares of Common Stock of options, rights
or warrants to subscribe for or purchase any share of any class or any other options, rights or warrants; or


 


(c)          of
any reclassification or reorganization of the Common Stock (other than a subdivision or combination of its outstanding Common Stock,
or a change in par value, or from par value to no par value, or from no par value to par value), or of any consolidation or merger
to which the Company is a party and for which approval of any shareholders of the Company is required, or of the sale, lease or
transfer of all or substantially all of the assets of the Company; or


 


(d)          of
the voluntary or involuntary dissolution, liquidation or winding up of the Company or any of its Significant Subsidiaries;


 


then, in each case, the Company shall cause to be filed with
the Trustee and the Conversion Agent and to be mailed to each Holder at such Holder’s address appearing in the Register,
as promptly as practicable, a notice stating (x) the date on which a record is to be taken for the purpose of such dividend, distribution
or rights or warrants, or, if a record is not to be taken, the date as of which the holders of shares of Common Stock of record
to be entitled to such dividend, distribution or rights are to be determined, or (y) the date on which such reclassification, reorganization,
consolidation, merger, sale, lease, transfer, dissolution, liquidation or winding up is expected to become effective or occur,
and the date as of which it is expected that holders of shares of Common Stock of record shall be entitled to exchange their shares
of Common Stock for securities or other property deliverable upon such reclassification, reorganization, consolidation, merger,
sale, transfer, dissolution, liquidation or winding up. Failure to give such notice, or any defect therein, shall not affect the
legality or validity of such dividend, distribution, reclassification, reorganization, consolidation, merger, sale, transfer, dissolution,
liquidation or winding up.


 




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Section 6.13         Shareholder
Rights Plan. Each share of Common Stock issued upon conversion of Notes pursuant to this Article 6, including in connection
with an Early Conversion Payment, shall be entitled to receive the appropriate number of rights, if any, and the certificates representing
the shares of Common Stock issued upon such conversion shall bear such legends, if any, in each case as may be provided by the
terms of any current or subsequent shareholder rights agreement adopted by the Company, as any such agreement may be amended from
time to time. Notwithstanding the foregoing, if prior to any conversion such rights have separated from the Common Stock in accordance
with the provisions of the applicable shareholder rights agreement, the Conversion Rate shall be adjusted at the time of separation
as if the Company had distributed, to all holders of the Common Stock, Distributed Property as described in Section 6.03(c) above,
subject to readjustment in the event of the expiration, termination or redemption of such rights.


 


Section 6.14         Company
Determination Final. Any determination that the Company or its Board of Directors must make pursuant to this Article 6 shall
be conclusive if made in good faith and in accordance with the provisions of this Article 6, absent manifest error, and set forth
in a Board Resolution.


 


Article
7.

PURCHASE AT OPTION OF HOLDERS UPON A FUNDAMENTAL CHANGE


 


Section 7.01         Purchase
at Option of Holders upon a Fundamental Change.


 


(a)          Generally.
If a Fundamental Change occurs at any time prior to the Maturity Date of the Notes, then each Holder shall have the right, at such
Holder’s option, to require the Company to purchase any or all of such Holder’s Notes or any portion thereof that is
equal to $1,000 or an integral multiple of $1,000 in excess thereof, on a date specified by the Company that is no earlier than
the 15th and not later than the 35th calendar day following the date of the Fundamental Change Company Notice, subject to extension
to comply with applicable law (the “Fundamental Change Purchase Date”), at a purchase price in cash equal to
One Hundred Twenty Percent (120%) of the Principal Amount thereof, together with accrued and unpaid interest thereon to, but excluding,
the Fundamental Change Purchase Date or, in the case of a Default by the Company in the payment of the Fundamental Change Purchase
Price with respect to such Notes, the day on which such Default is no longer continuing (the “Fundamental Change Purchase
Price”); provided, however, if the Fundamental Change Purchase Date occurs after a Regular Record Date
and on or prior to the Interest Payment Date to which it relates, the Company will pay accrued and unpaid interest to the Holder
of record on such Regular Record Date, subject to DTC’s applicable procedures, and the Fundamental Change Purchase Price
will be equal to 100% of the Principal Amount of the Notes to be purchased.


 




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Purchases of Notes under this Section 7.01
shall be made, at the option of the Holder thereof upon:


 


(i)          delivery
to the Paying Agent of a duly completed notice (the “Fundamental Change Purchase Notice”) in the form set forth
on the reverse of the Notes on or prior to the Business Day immediately preceding the Fundamental Change Purchase Date, subject
to extension to comply with applicable law, which must specify:


 


(A)         if
the Notes are Physical Notes, the certificate numbers of the Holder’s Notes to be delivered for purchase;


 


(B)         the
portion of the Principal Amount of the Holder’s Notes to be purchased, which must be $1,000 or an integral multiple in excess
thereof; and


 


(C)         that
the Holder’s Notes are to be purchased by the Company pursuant to the applicable provisions of the Notes and this Indenture;
and


 


(ii)         delivery
or book-entry transfer of the Notes to the Trustee (or other Paying Agent appointed by the Company) (together with all necessary
endorsements) at any time on or prior to the Business Day immediately preceding the Fundamental Change Purchase Date, subject to
extension to comply with applicable law, at the applicable Corporate Trust Office of the Trustee (or other Paying Agent appointed
by the Company), such delivery being a condition to receipt by the Holder of the Fundamental Change Purchase Price therefor; provided
that such Fundamental Change Purchase Price shall be so paid pursuant to this Section 7.01 only if the Notes so delivered to the
Trustee (or other Paying Agent appointed by the Company) shall conform in all respects to the description thereof in the related
Fundamental Change Purchase Notice; provided that, if such Holder’s Notes are not Physical Notes, such Holder must
comply with the Applicable Procedures.


 


Any purchase by the Company contemplated
pursuant to the provisions of this Section 7.01 shall be consummated by the delivery of the Fundamental Change Purchase Price to
be received by the Holder promptly following the later of the Fundamental Change Purchase Date or the time of the book-entry transfer
or delivery of the Notes.


 


Notwithstanding anything herein to the contrary,
any Holder delivering to the Trustee (or other Paying Agent appointed by the Company) the Fundamental Change Purchase Notice contemplated
by this Section 7.01 shall have the right to withdraw such Fundamental Change Purchase Notice (in whole or in part) at any time
prior to the Close of Business on (i) the Business Day prior to the Fundamental Change Purchase Date or (ii) in the case of a Default
by the Company in the payment of the Fundamental Change Purchase Price with respect to such Notes, the Business Day immediately
preceding the day on which such Default is no longer continuing, in either case, by delivery of a written notice of withdrawal
to the Trustee (or other Paying Agent appointed by the Company) in accordance with Section 7.03 below.


 


The Paying Agent shall promptly notify the
Company of the receipt by it of any Fundamental Change Purchase Notice or written notice of withdrawal thereof.


 


(b)          Fundamental
Change Company Notice. On or before the 20th day after the occurrence of a Fundamental Change, the Company shall provide to
all Holders of record of the Notes and the Trustee and Paying Agent a notice (the “Fundamental Change Company Notice”)
of the occurrence of such Fundamental Change and of the purchase right at the option of the Holders arising as a result thereof.
Such mailing shall be by first class mail or otherwise sent electronically in accordance with the applicable procedures of the
Depositary in the case of Global Notes. Simultaneously with providing such Fundamental Change Company Notice, the Company shall
publish a notice containing the information included therein once in a newspaper of general circulation in The City of New York
or publish such information on the Company’s website or through such other public medium as the Company may use at such time.


 




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Each Fundamental Change Company Notice will
specify:


 


(i)          the
events causing the Fundamental Change;


 


(ii)         the
date of the Fundamental Change;


 


(iii)        the
last date on which a Holder may exercise the purchase right;


 


(iv)        the
Fundamental Change Purchase Price;


 


(v)         the
Fundamental Change Purchase Date;


 


(vi)        the
name and address of the Paying Agent and the Conversion Agent, if applicable;


 


(vii)       if
applicable, the Applicable Conversion Rate and any adjustments to the Applicable Conversion Rate;


 


(viii)      if
applicable, that the Notes with respect to which a Fundamental Change Purchase Notice has been delivered by a Holder may be converted
only if the Holder withdraws the Fundamental Change Purchase Notice in accordance with Section 7.03; and


 


(ix)         the
procedures that Holders must follow to require the Company to purchase their Notes.


 


No failure of the Company to give the foregoing
notices and no defect therein shall limit any Holder’s purchase rights or affect the validity of the proceedings for the
purchase of the Notes pursuant to this Section 7.01.


 


(c)          No
Payment During an Acceleration. Notwithstanding the foregoing, no Notes may be purchased by the Company at the option of the
Holders pursuant to this Section 7.01 if the Principal Amount of the Notes has been accelerated, and such acceleration has not
been rescinded, on or prior to the Fundamental Change Purchase Date (except in the case of an acceleration resulting from a Default
by the Company in the payment of the Fundamental Change Purchase Price with respect to such Notes).


 


(d)          Payment
of Fundamental Change Purchase Price. The Notes to be purchased pursuant to this Section 7.01 shall be paid for in cash.


 


Section 7.02         Effect
of Fundamental Change Purchase Notice. Upon receipt by the Paying Agent of the Fundamental Change Purchase Notice specified
in Section 7.01(a), the Holder of the Note in respect of which such Fundamental Change Purchase Notice was given shall (unless
such Fundamental Change Purchase Notice is withdrawn as specified in Section 7.03) thereafter be entitled to receive solely the
Fundamental Change Purchase Price with respect to such Note. Such Fundamental Change Purchase Price shall be payable to such Holder
promptly following the later of (x) the Fundamental Change Purchase Date with respect to such Note (provided the conditions in
Section 7.01(a) have been satisfied) and (y) the time of delivery or book-entry transfer of such Note to the Paying Agent by the
Holder thereof in the manner required by Section 7.01(a).


 




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Section 7.03         Withdrawal
of Fundamental Change Purchase Notice.


 


(a)          A
Fundamental Change Purchase Notice may be withdrawn (in whole or in part) by means of a written notice of withdrawal delivered
to the Paying Agent in accordance with the Fundamental Change Company Notice prior to the Close of Business on (i) the Business
Day immediately preceding the relevant Fundamental Change Purchase Date or (ii) in the case of a Default by the Company in the
payment of the Fundamental Change Purchase Price with respect to such Notes, the Business Day immediately preceding the day on
which such Default is no longer continuing, specifying:


 


(i)          the
Principal Amount of the withdrawn Notes;


 


(ii)         if
the Notes are Physical Notes, the certificate numbers of the withdrawn Notes; and


 


(iii)        the
Principal Amount, if any, of such Notes that remains subject to the original Fundamental Change Purchase Notice, which must be
$1,000 or an integral multiple of $1,000 in excess thereof;


 


provided that, if such Holder’s Notes are not Physical
Notes, such Holder must comply with the Applicable Procedures.


 


Section 7.04         Deposit
of Fundamental Change Purchase Price. Prior to 10:00 a.m. (local time in The City of New York) on the Fundamental Change Purchase
Date, the Company shall deposit with the Paying Agent (or, if the Company or a Subsidiary or an Affiliate of either of them is
acting as the Paying Agent, shall segregate and hold in trust as provided herein) an amount of money (in immediately available
funds if deposited on such Business Day) sufficient to pay the Fundamental Change Purchase Price, of all the Notes or portions
thereof that are to be purchased as of the Fundamental Change Purchase Date. The Company shall promptly notify the Trustee in writing
of the amount of any deposits of cash made pursuant to this Section 7.04. If the Paying Agent holds money sufficient to pay the
Fundamental Change Purchase Price of any Note surrendered for purchase and not withdrawn in accordance with this Indenture as of
the Close of Business on the Fundamental Change Purchase Date, then immediately following the Close of Business on the Fundamental
Change Purchase Date, (a) any such Note will cease to be outstanding and interest will cease to accrue thereon on the Fundamental
Change Purchase Date (whether or not book-entry transfer of the Notes is made or whether or not the Notes are delivered to the
Paying Agent) and (b) all other rights of the Holder in respect thereof will terminate (other than the right to receive the Fundamental
Change Purchase Price and previously accrued and unpaid interest (including Additional Interest, if any) upon delivery or book-entry
transfer of such Note).


 




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Section 7.05         Notes
Purchased in Whole or in Part. Any Note that is to be purchased, whether in whole or in part, shall be surrendered at the office
of the Paying Agent (with, if the Company or the Trustee so requires, due endorsement by, or a written instrument of transfer in
form satisfactory to the Company and the Trustee duly executed by, the Holder thereof or such Holder’s attorney duly authorized
in writing) and the Company shall execute and the Trustee shall authenticate and deliver to the Holder of such Note, without service
charge, a new Note or Notes, of any authorized denomination as requested by such Holder in aggregate Principal Amount equal to,
and in exchange for, the portion of the Principal Amount of the Note so surrendered which is not purchased.


 


Section 7.06         Covenant
to Comply With Securities Laws upon Purchase of Notes. In connection with any offer to purchase Notes under Section 7.01, the
Company shall, if required, comply with the provisions of the tender offer rules under the Exchange Act that may then be applicable,
file a Schedule TO or any other required schedule under the Exchange Act and otherwise comply with all federal and state securities
laws.


 


Section 7.07         Repayment
to the Company. Subject to the requirements of any applicable abandoned property laws, regardless of who acts as Paying Agent,
the Paying Agent shall return to the Company any cash that remains unclaimed, together with interest, if any, thereon, held by
them for the payment of the Fundamental Change Purchase Price; provided that to the extent that the aggregate amount of cash deposited
by the Company pursuant to Section 7.04 exceeds the aggregate Fundamental Change Purchase Price of the Notes or portions thereof
which the Company is obligated to purchase as of the Fundamental Change Purchase Date, then as soon as practicable following the
Fundamental Change Purchase Date, the Paying Agent shall return any such excess to the Company.


 


Article
8.

EVENTS OF DEFAULT; REMEDIES


 


Section 8.01         Events
of Default. “Event of Default,” wherever used herein, means any one of the following events (whatever the
reason for such Event of Default and whether it shall be voluntary or involuntary or be 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):


 


(a)          default
by the Company in any payment of interest on any Notes when due and payable and such default continues for a period of fifteen
(15) days;


 


(b)          default
by the Company in the payment of the Principal Amount of any Note when due and payable on the Maturity Date, upon required purchase
in connection with a Fundamental Change, upon declaration of acceleration or otherwise;


 


(c)          failure
by the Company to comply with its obligation to convert the Notes in accordance with this Indenture upon exercise of a Holder’s
conversion right, including the delivery of shares of Common Stock and Early Conversion Payment, if applicable, and such failure
continues for a period of three Business Days;


 


(d)          failure
by the Company to provide the Fundamental Change Company Notice to Holders required pursuant to Section 7.01(b) hereof when due,
and such failure continues for five Business Days;


 




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(e)          failure
by the Company to comply with its obligations under Article 9 hereof;


 


(f)          failure
by the Company in the performance of any other covenant or agreement of the Company in the Notes or in this Indenture that continues
for a period of 60 days after receipt by the Company of a Notice of Default;


 


(g)          default
by the Company or any Subsidiary of the Company with respect to any mortgage, indenture or instrument under which there may be
issued or by which there may be secured or evidenced any indebtedness for money borrowed (or the payment of which is guaranteed
by the Company or any of its Subsidiaries), whether such indebtedness or guarantee now exists, or will hereafter be created, which
default (i) is caused by a failure to pay principal of or premium, if any, or interest on such indebtedness prior to the expiration
of the grace period provided in such indebtedness on the date of such default or (ii) results in the acceleration of such indebtedness
prior to its express maturity, and in each case in clause (i) or (ii), the principal amount of any such indebtedness, together
with the principal amount of any other such indebtedness that has not been paid when due, or the maturity of which has been so
accelerated, aggregates $1.5 million or more;


 


(h)          a
final judgment for the payment of $1.5 million or more (excluding any amounts covered by insurance or bond) rendered against the
Company or any Subsidiary of the Company by a court of competent jurisdiction, which judgment is not discharged, stayed, vacated,
paid or otherwise satisfied within 30 days after (i) the date on which the right to appeal thereof has expired if no such appeal
has commenced, or (ii) the date on which all rights to appeal have been extinguished;


 


(i)          the
entry by a court having jurisdiction in the premises of (i) a decree or order for relief in respect of the Company or any Significant
Subsidiary of the Company of a voluntary case or proceeding under any applicable federal, state or foreign bankruptcy, insolvency,
reorganization or other similar law, (ii) a decree or order adjudging the Company or a Significant Subsidiary of the Company as
bankrupt or insolvent, or approving as properly filed a petition seeking reorganization, arrangement, adjustment or composition
of or in respect of the Company or any Significant Subsidiary of the Company under any applicable federal, state or foreign law
or (iii) appointing a custodian, receiver, liquidator, assignee, trustee, sequestrator or other similar official of the Company
or of a Significant Subsidiary of the Company of any substantial part of its property, or ordering the winding up or liquidation
of its affairs, and the continuance of any such decree or order for relief or any such other decree or order unstayed and in effect
for a period of 60 consecutive days;


 




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(j)          the
commencement by the Company or by a Significant Subsidiary of the Company of a voluntary case or proceeding under any applicable
federal, state or foreign bankruptcy, insolvency, reorganization or other similar law or of any other case or proceeding to be
adjudicated a bankrupt or insolvent, or the consent by it to the entry of a decree or order for relief in respect of the Company
or of a Significant Subsidiary of the Company in an involuntary case or proceeding under any applicable federal, state or foreign
bankruptcy, insolvency, reorganization or other similar law or to the commencement of any bankruptcy or insolvency case or proceeding
against it, or the filing by it of a petition or answer or consent seeking reorganization or relief under any applicable federal,
state or foreign law, or the consent by it to the filing of such petition or to the appointment of or taking possession by a custodian,
receiver, liquidator, assignee, trustee, sequestrator or other similar official of the Company or of a Significant Subsidiary of
the Company or of any substantial part of such entity’s property, or the making by it of an assignment for the benefit of
creditors, or the admission by it in writing of its inability to pay its debts generally as they become due, or the taking of corporate
action by the Company or by a Significant Subsidiary of the Company in furtherance of any such action; and


 


(k)          except
as permitted by this Indenture, any Note Guarantee is held in any judicial proceeding to be unenforceable or invalid or ceases
for any reason to be in full force and effect, or any Guarantor, or any Person acting on behalf of any Guarantor, denies or disaffirms
its obligations under its Note Guarantee.


 


The Trustee will not be charged with knowledge
of any fact, Default or Event of Default unless either (1) a Trust Officer has actual knowledge of such fact, Default or Event
of Default or (ii) written notice thereof will have be given to a Trust Officer at the Corporate Trust Office of the Trustee by
the Company or any Holders of not less than 25% in aggregate Principal Amount of the outstanding Notes.


 


Section 8.02         Acceleration
of Maturity: Waiver of Past Defaults and Rescission.


 


(a)          If
an Event of Default (other than those specified in Section 8.01(i) and Section 8.01(j) involving the Company, and as otherwise
provided in Section 8.03) occurs and is continuing, then and in every such case the Trustee or the Holders of not less than 25%
in aggregate Principal Amount of the outstanding Notes may declare 100% of the Principal Amount plus accrued and unpaid
interest on all the outstanding Notes to be due and payable immediately, by a notice in writing to the Company (and to the Trustee
if given by Holders), and upon any such declaration such Principal Amount plus accrued and unpaid interest plus, except
to the extent prohibited by applicable law, a payment equal to the remaining scheduled payments of interest that would have been
made on the Notes from the date of the Event of Default (or, in the case of an Event of Default between a Regular Record Date and
the following Interest Payment Date, from such Interest Payment Date) until the first to occur of the Maturity Date and September
23, 2019, shall become immediately due and payable.


 


Notwithstanding the foregoing, in the case
of an Event of Default specified in Section 8.01(i) or Section 8.01(j) with respect to the Company (but not with respect to any
Significant Subsidiary of the Company or any group of Subsidiaries of the Company that, in the aggregate, would constitute a Significant
Subsidiary of the Company), 100% of the Principal Amount plus accrued and unpaid interest on all outstanding Notes plus,
except to the extent prohibited by applicable law, a payment equal to the remaining scheduled payments of interest that would
have been made on the Notes from the date of the Event of Default (or, in the case of an Event of Default between a Regular Record
Date and the following Interest Payment Date, from such Interest Payment Date) until the first to occur of the Maturity Date and
September 23, 2019, will automatically become due and payable without any declaration or other act on the part of the Trustee or
any Holder.


 




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(b)          The
Holders of a majority in aggregate Principal Amount of the outstanding Notes, by written notice to the Company and the Trustee,
may (x) waive any past Default and its consequences and (y) at any time after a declaration of acceleration has been made and before
a judgment or decree for payment of the money due has been obtained by the Trustee as hereinafter in this Article 8 provided, rescind
any such acceleration with respect to the Notes and its consequences, except, in each case, with respect to a Default described
in Section 8.01(a), Section 8.01(b) or Section 8.01(c), or in respect of a covenant or provision hereof which under Article 13
cannot be modified or amended without the consent of the Holder of each outstanding Note affected, if:


 


(i)          such
rescission will not conflict with any judgment or decree of a court of competent jurisdiction; and


 


(ii)         all
existing Events of Default have been cured or waived.


 


Upon any such waiver, the Default which
has been waived shall cease to exist and any Event of Default arising therefrom shall be deemed to have been cured, for every other
purpose of this Indenture; but no such waiver shall extend to any subsequent or other Default or impair any right consequent.


 


No such rescission shall affect any subsequent
default or impair any right consequent thereon.


 


Section 8.03         Additional
Interest.


 


(a)          If,
at any time during the six-month period beginning on, and including, the date which is six months after the Issue Date, the Company
fails to timely file any document or report that the Company is required to file with the Commission pursuant to Section 13 or
15(d) of the Exchange Act, as applicable (after giving effect to all applicable grace periods thereunder and other than current
reports on Form 8-K), or the Notes (other than Affiliate Notes) are not otherwise Freely Tradable (as a result of restrictions
pursuant to U.S. securities law or the terms of this Indenture or the Notes), the Company shall pay Additional Interest on the
Notes which shall accrue at the rate of 0.50% per annum of the Principal Amount of Notes outstanding for each day during such period
for which the Company’s failure to file has occurred and is continuing or for which the Notes are not Freely Tradable (ending
on the date that is one year from the Issue Date).


 


Further, if, and for so long as, the Restrictive
Notes Legend has not been removed from the Notes (other than Affiliate Notes), the Notes are assigned a restricted CUSIP number
or the Notes are not otherwise Freely Tradable as of the 375th day after the Issue Date, the Company shall pay Additional Interest
on the Notes. Such Additional Interest will accrue on the Notes at the rate of 0.50% per annum of the Principal Amount of Notes
outstanding until the Restrictive Notes Legend has been removed in accordance with Section 3.08, the Notes are assigned an unrestricted
CUSIP number and the Notes are Freely Tradable.


 


Notwithstanding anything to the contrary
in this Indenture, in no event shall the aggregate amount of Additional Interest payable pursuant to this Section 8.03(a), Section
8.03(b) hereof and Section 6 of the Registration Rights Agreement exceed 1.00% per annum.


 




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The obligations of the Company pursuant
to this Section 8.03(a) are separate and distinct from, and in addition to, the obligations of the Company pursuant to Section
8.03(b), subject to proviso to the first paragraph of this Section 8.03(a). Any Additional Interest payable pursuant to this Section
8.03(a) will be payable in arrears on each Interest Payment Date following accrual in the same manner as ordinary interest is payable
pursuant to Section 2.03. The Company shall notify the Trustee and the Holders in writing of any Additional Interest due under
Section 8.03 (a) at least 15 days prior to each Interest Payment Date, as applicable.


 


(b)          Notwithstanding
anything to the contrary in this Indenture, if so elected by the Company, the sole remedy for an Event of Default relating to the
failure to comply with Section 4.08 hereof will (i) for the first 180 days after the occurrence of such an Event of Default (which,
for the avoidance of doubt, will not occur until the Notice of Default has been provided, and the related 60-day period has passed)
consist exclusively of the right to receive Additional Interest on the Notes at an annual rate equal to 0.25% of the Principal
Amount of outstanding Notes and (ii) from the 181st day until the 360th day following the occurrence of such an Event of Default
consist exclusively of the right to receive Additional Interest on the Notes at an annual rate equal to 0.50% of the Principal
Amount of outstanding Notes. The Additional Interest payable pursuant to this Section 8.03(b) will be in addition to any Additional
Interest that may accrue pursuant to Section 8.03(a) (subject to the proviso to the first paragraph of such Section). If the Company
so elects, the Additional Interest payable under this Section 8.03(b) will be payable on all outstanding Notes from and including
the date on which such Event of Default first occurs to, but excluding, the 360th day thereafter, or such earlier date on which
such Event of Default has been cured or waived or ceases to exist. On the 361st day after such Event of Default, if such Event
of Default has not been cured or waived prior to such 361st day, Additional Interest payable pursuant to this Section 8.03(b) will
cease to accrue and the Notes will be subject to acceleration as provided in Section 8.02. In the event the Company does not elect
to pay the Additional Interest payable pursuant to this Section 8.03(b) upon an Event of Default in accordance with this paragraph,
the Notes will be subject to acceleration as provided in Section 8.02. Any Additional Interest payable pursuant to this Section
8.03(b) will be payable in arrears on each Interest Payment Date following accrual in the same manner as ordinary interest is payable
pursuant to Section 2.03, except that payment shall be in cash on the final Interest Payment Date.


 


In order to elect to pay the Additional
Interest payable pursuant to this Section 8.03(b) as the sole remedy during the first 360 days after the occurrence of an Event
of Default relating to the failure to comply with Section 4.08 in accordance with the immediately preceding paragraph, the Company
must notify all Holders, the Trustee and Paying Agent in writing of such election on or before the Close of Business on the date
on which such Event of Default first occurs (which, for the avoidance of doubt, will not occur until the Notice of Default has
been provided, and the related 60-day period has passed). Upon the failure to timely give all Holders, the Trustee and Paying Agent
such notice, the Notes will be immediately subject to acceleration as provided in Section 8.02. For avoidance of doubt, the Trustee
shall send the Notice of Default under this Section 8.03(b) only if it is directed to do so by the Holders in accordance with this
Indenture.


 




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Section 8.04         Collection
of Indebtedness and Suits for Enforcement by Trustee. The Company covenants that if a Default is made in the payment of the
Principal Amount plus accrued and unpaid interest on the Maturity Date therefor or in the payment of the Fundamental Change Purchase
Price in respect of any Note, the Company will, upon demand of the Trustee, pay to it, for the benefit of the Holders of such Notes,
the whole amount then due and payable on such Notes, and, in addition thereto, such further amount as shall be sufficient to cover
the costs and expenses of collection, including the compensation, expenses, disbursements and advances of the Trustee, its agents
and counsel.


 


If an Event of Default occurs and is continuing,
the Trustee may, but shall not be obligated to, pursue any available remedy to collect the payment of the Principal Amount plus
accrued but unpaid interest on the Notes or to enforce the performance of any provision of the Notes or this Indenture. The Trustee
may maintain a proceeding even if the Trustee does not possess any of the Notes or does not produce any of the Notes in the proceeding.
A delay or omission by the Trustee or any Holder in exercising any right or remedy accruing upon an Event of Default shall not
impair the right or remedy or constitute a waiver of, or acquiescence in, the Event of Default. No remedy is exclusive of any other
remedy. All available remedies are cumulative.


 


Section 8.05         Trustee
May File Proofs of Claim. In case of any judicial proceeding relative to the Company (or any other obligor upon the Notes),
its property or its creditors, the Trustee shall be entitled and empowered, by intervention in such proceeding or otherwise, to
take any and all actions authorized under this Indenture and applicable law in order to have claims of the Holders and the Trustee
allowed in any such proceeding. In particular, the Trustee shall be authorized to collect and receive any moneys or other property
payable or deliverable on any such claims and to distribute the same; and any custodian, receiver, assignee, trustee, liquidator,
sequestrator or other similar official in any such judicial proceeding is hereby authorized by each Holder to make such payments
to the Trustee and, in the event that the Trustee shall consent to the making of such payments directly to the Holders, to pay
to the Trustee any amount due it for the compensation, expenses, disbursements and advances of the Trustee, its agents and counsel
and any other amounts due the Trustee under Section 10.07.


 


No provision of this Indenture shall be
deemed to authorize the Trustee to authorize or consent to or accept or adopt on behalf of any Holder any plan of reorganization,
arrangement, adjustment or composition affecting the Notes or the rights of any Holder thereof or to authorize the Trustee to vote
in respect of the claim of any Holder in any such proceeding.


 


Section 8.06         Application
of Money Collected. Any money collected by the Trustee pursuant to this Article shall be applied in the following order, at
the date or dates fixed by the Trustee and, in case of the distribution of such money to Holders, upon presentation of the Notes
and the notation thereon of the payment if only partially paid and upon surrender thereof if fully paid:


 


FIRST: To the payment of all amounts due
the Trustee under Section 10.07;


 


SECOND: To the payment of the amounts then
due and unpaid on the Notes for the Principal Amount, Redemption Price, Fundamental Change Purchase Price or interest (including
Additional Interest, if any) as the case may be, in respect of which or for the benefit of which such money has been collected,
ratably, without preference or priority of any kind, according to the amounts due and payable on such Notes; and


 




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THIRD: To the payment of the remainder,
if any, to the Company or any other Person lawfully entitled thereto.


 


Section 8.07         Limitation
on Suits. No Holder of any Note shall have any right to institute any proceeding, judicial or otherwise, with respect to this
Indenture or the Notes, or for the appointment of a receiver or trustee, or for any other remedy hereunder (other than in the case
of an Event of Default specified in Section 8.01(a), Section 8.01(b) or Section 8.01(c)) unless:


 


(i)          such
Holder has previously given written notice to the Trustee of a continuing Event of Default;


 


(ii)         the
Holder or Holders of not less than 25% in aggregate Principal Amount of the outstanding Notes shall have made written request to
the Trustee to institute proceedings in respect of such Event of Default in its own name as Trustee hereunder;


 


(iii)        such
Holder or Holders have offered to the Trustee security or indemnity satisfactory to it against any loss, liability or expense;


 


(iv)        the
Trustee for 60 days after its receipt of such request and offer of security or indemnity has failed to institute any such proceeding;
and


 


(v)         no
direction, in the opinion of the Trustee, inconsistent with such written request has been given to the Trustee during such 60-day
period by the Holders of a majority in aggregate Principal Amount of the outstanding Notes;


 


it being understood and intended that no one or more Holders
shall have any right in any manner whatever by virtue of, or by availing itself of, any provision of this Indenture to affect,
disturb or prejudice the rights of any other Holders, or to obtain or to seek to obtain priority or preference over any other Holders
or to enforce any right under this Indenture, except in the manner herein provided and for the equal and ratable benefit of all
the Holders.


 


Section 8.08         Unconditional
Right of Holders to Receive Payment. Notwithstanding any other provision of this Indenture, the right of any Holder to receive
payment of the Principal Amount (including the Redemption Price or the Fundamental Change Purchase Price or interest in respect
of the Notes held by such Holder, on or after the respective due dates expressed in the Notes, or any Fundamental Change Purchase
Date or otherwise, as applicable), any accrued and unpaid interest (including Additional Interest, if any) and to convert the Notes
in accordance with Article 6 (including the receipt of the Early Conversion Payment), or to bring suit for the enforcement of any
such payment on or after such respective dates or the right to convert, shall not be impaired or affected without the consent of
such Holder.


 




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Section 8.09         Restoration
of Rights and Remedies. If the Trustee or any Holder has instituted any proceeding to enforce any right or remedy under this
Indenture and such proceeding has been discontinued or abandoned for any reason, or has been determined adversely to the Trustee
or to such Holder, then and in every such case, subject to any determination in such proceeding, the Company, the Trustee and the
Holders shall be restored severally and respectively to their former positions hereunder and thereafter all rights and remedies
of the Trustee and the Holders shall continue as though no such proceeding had been instituted.


 


Section 8.10         Rights
and Remedies Cumulative. Except as otherwise provided with respect to the replacement or payment of mutilated, destroyed, lost
or stolen Notes in the last paragraph of Section 3.07, no right or remedy herein conferred upon or reserved to the Trustee or to
the Holders is intended to be exclusive of any other right or remedy, and every right and remedy shall, to the extent permitted
by law, be cumulative and in addition to every other right and remedy given hereunder or now or hereafter existing at law or in
equity or otherwise. The assertion or employment of any right or remedy hereunder shall not prevent the concurrent assertion or
employment of any other appropriate right or remedy.


 


Section 8.11         Delay
or Omission Not Waiver. No delay or omission of the Trustee or of any Holder of any Note to exercise any right or remedy accruing
upon any Event of Default shall impair any such right or remedy or constitute a waiver of any such Event of Default or an acquiescence
therein. Every right and remedy given by this Article or by law to the Trustee or to the Holders may be exercised from time to
time, and as often as may be deemed expedient, by the Trustee or by the Holders, as the case may be.


 


Section 8.12         Control
by Holders. The Holders of a majority in aggregate Principal Amount of the outstanding Notes may direct the time, method and
place of conducting any proceeding for any remedy available to the Trustee or of exercising any trust or power conferred on the
Trustee. However, if an Event of Default has occurred and is continuing, the Trustee will be required in the exercise of its powers
to use the degree of care and skill that a prudent person would use under the circumstances in the conduct of its own affairs.
Furthermore, the Trustee may refuse to follow any direction that conflicts with applicable law or this Indenture or that the Trustee
determines is unduly prejudicial to the rights of any other Holder or that would involve the Trustee in personal liability. Prior
to taking any action under this Indenture, the Trustee will be entitled to indemnification or security satisfactory to it against
all losses, liability and expenses caused by taking or not taking such action.


 


Section 8.13         Undertaking
for Costs. In any suit for the enforcement of any right or remedy under this Indenture or in any suit against the Trustee for
any action taken or omitted by it as Trustee, in either case in respect of the Notes, a court may require any party litigant in
such suit to file an undertaking to pay the costs of the suit, and the court may assess costs, including attorney’s fees
and expenses, against any party litigant in the suit having due regard to the merits and good faith of the claims or defenses made
by the party litigant; but the provisions of this Section 8.13 shall not apply to any suit instituted by the Company, to any suit
instituted by the Trustee, to any suit instituted by any Holder, or group of Holders, holding in the aggregate more than 10% in
Principal Amount of the outstanding Notes, or to any suit instituted by any Holder for the enforcement of the payment of the Principal
Amount on any Note on or after the Maturity Date of such Note or the Fundamental Change Purchase Date.


 




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Section 8.14         Violations
of Certain Covenants. A violation of Section 4.08 or any other covenant or agreement in this Indenture that expressly provides
that a violation of such covenant or agreement shall not constitute an Event of Default may only be enforced by the Trustee by
instituting a legal proceeding against the Company for enforcement of such covenant or agreement.


 


Article
9.

MERGER, CONSOLIDATION OR SALE OF ASSETS


 


Section 9.01         Company
May Consolidate, etc., only on Certain Terms. The Company shall not, in a single transaction or through a series of related
transactions, consolidate or merge with or into any other Person, or, directly or indirectly, sell, convey, transfer, lease or
otherwise dispose of all or substantially all of Company’s assets to another Person or group of affiliated Persons, except
that the Company may consolidate or merge with or into, or sell, convey, transfer, lease or otherwise dispose of all or substantially
all of its assets to another Person if:


 


(i)          the
Company is the surviving Person or the resulting, surviving, transferee or successor Person (the “Successor Company”)
(if other than the Company) is a corporation organized and existing under the laws of the United States of America, any State of
the United States of America or the District of Columbia and such Successor Company (if not the Company) expressly assumes by an
indenture supplemental hereto all obligations of the Company under this Indenture, including payment of the Principal Amount and
interest on the Notes, and the performance and observance of all of the covenants and conditions of this Indenture to be performed
by the Company, and expressly assumes by a supplement all obligations of the Company under the Registration Rights Agreement, and
the performance and observance of all of the covenants and conditions of the Registration Rights Agreement to be performed by the
Company;


 


(ii)         immediately
after giving effect to such transaction, no Default under this Indenture has occurred and is continuing;


 


(iii)        if,
upon the occurrence of any such consolidation, merger, sale, conveyance, transfer, lease or other disposal, (x) the Notes would
become convertible pursuant to the terms of this Indenture into securities issued by an issuer other than the Successor Company,
and (y) such Successor Company is a wholly owned Subsidiary of the issuer of such securities into which the Notes have become convertible,
such other issuer will fully and unconditionally guarantee on a senior basis the Successor Company’s obligations under the
Notes; and


 


(iv)        the
Company shall have delivered to the Trustee an Officers’ Certificate and Opinion of Counsel stating that such consolidation,
merger, sale, conveyance, transfer lease or other disposal and, if a supplemental indenture is required in connection with such
transaction, such supplemental indenture, comply with this Article 9 and that all conditions precedent herein provided for relating
to such transaction have been satisfied.


 




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Section 9.02         Successor
Substituted. Upon any consolidation of the Company with, or merger of the Company into, any other Person or any sale, conveyance,
transfer, lease or other disposal of all or substantially all of the Company’s assets to another Person in accordance with
Section 9.01, the Successor Company formed by such consolidation or into which the Company is merged or to which such sale, conveyance,
transfer, lease or other disposal is made will succeed to, and may exercise every right and power of, the Company under this Indenture
and the Registration Rights Agreement with the same effect as if such Successor Company had been named as the Company herein and
therein, and thereafter. If the predecessor is still in existence after such transaction, it will be released from its obligations
and covenants under this Indenture, the Registration Rights Agreement and the Notes, except in the case of a lease of all or substantially
all of its properties and assets.


 


Article
10.

THE TRUSTEE


 


Section 10.01        Duties
and Responsibilities of Trustee.


 


(a)          The
Trustee, prior to the occurrence of an Event of Default and after the curing of all Events of Default which may have occurred,
undertakes to perform such duties and only such duties as are specifically set forth in this Indenture. In case an Event of Default
has occurred (which has not been cured or waived), the Trustee shall exercise such of the rights and powers vested in it by this
Indenture, and use the same degree of care and skill in their exercise, as a prudent person would exercise or use under the circumstances
in the conduct of his own affairs.


 


(b)          No
provision of this Indenture shall be construed to relieve the Trustee from liability for its own negligent action, its own negligent
failure to act or its own willful misconduct, except that:


 


(i)          prior
to the occurrence of an Event of Default and after the curing or waiving of all Events of Default which may have occurred:


 


(A)         the
duties and obligations of the Trustee shall be determined solely by the express provisions of this Indenture and applicable law,
and the Trustee shall not be liable except for the performance of such duties and obligations as are specifically set forth in
this Indenture and no implied covenants or obligations shall be read into this Indenture against the Trustee; and


 


(B)         in
the absence of gross negligence and willful misconduct on the part of the Trustee, the Trustee may conclusively rely as to the
truth of the statements and the correctness of the opinions expressed therein, upon any certificates or opinions furnished to the
Trustee and conforming to the requirements of this Indenture; but, in the case of any such certificates or opinions which by any
provisions hereof are specifically required to be furnished to the Trustee, the Trustee shall be under a duty to examine the same
to determine whether or not they conform to the requirements of this Indenture (but need not confirm or investigate the accuracy
of any mathematical calculations or other facts stated therein);


 


(ii)         the
Trustee shall not be liable for any error of judgment made in good faith by a Trust Officer or Officers of the Trustee, unless
the Trustee was grossly negligent in ascertaining the pertinent facts;


 




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(iii)        the
Trustee shall not be liable with respect to any action taken or omitted to be taken by it in good faith in accordance with the
written direction of the Holders of not less than a majority in Principal Amount of the Notes at the time outstanding determined
as provided in Section 1.04 relating to the time, method and place of conducting any proceeding for any remedy available to the
Trustee, or exercising any trust or power conferred upon the Trustee, under this Indenture;


 


(iv)        whether
or not therein provided, every provision of this Indenture relating to the conduct or affecting the liability of, or affording
protection to, the Trustee shall be subject to the provisions of this Section;


 


(v)         the
Trustee shall not be liable in respect of any payment (as to the correctness of amount, entitlement to receive or any other matters
relating to payment) or notice effected by the Company or any Paying Agent or any records maintained by any co-Registrar with respect
to the Notes;


 


(vi)        if
any party fails to deliver a notice relating to an event the fact of which, pursuant to this Indenture, requires notice to be sent
to the Trustee, the Trustee may conclusively rely on its failure to receive such notice as reason to act as if no such event occurred;


 


(vii)       The
Trustee shall have no responsibility with respect to any information, statement or recital in any private placement memorandum
or other disclosure material prepared or distributed with respect to the Notes or for compliance with any securities laws in connection
with the issuance, sale, or conversion of the Notes, which shall be the sole responsibility of the Company;


 


(viii)      In
no event shall the Trustee be responsible or liable for any special, indirect, punitive or consequential loss or damage of any
kind whatsoever (including, but not limited to, loss of profit), irrespective of whether the Trustee has been advised of the likelihood
of such loss or damage and regardless of the form of action;


 


(ix)        The
Trustee shall not be required to give any bond or surety in respect of the performance of its powers or duties hereunder;


 


(x)         Under
no circumstances shall the Trustee be liable in its individual capacity for the obligations evidenced by the Notes; and


 


(xi)        In
the absence of written investment direction from the Company, all cash received by the Trustee shall be placed in a non-interest
bearing trust account, and in no event shall the Trustee be liable for the selection of investments or for investment losses incurred
thereon or for losses incurred as a result of the liquidation of any such investment prior to its maturity date or the failure
of the party directing such investments prior to its maturity date or the failure of the party directing such investment to provide
timely written investment direction, and the Trustee shall have no obligation to invest or reinvest any amounts held hereunder
in the absence of such written investment direction from the Company.


 




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None of the provisions contained in this
Indenture shall require the Trustee to expend or risk its own funds or otherwise incur personal financial liability in the performance
of any of its duties or in the exercise of any of its rights or powers, if there is reasonable ground for believing that the repayment
of such funds or adequate indemnity against such risk or liability is not reasonably assured to it.


 


The rights, privileges, protections, immunities
and benefits given to the Trustee, including, without limitation, its right to be indemnified, are extended to, and shall be enforceable
by, the Trustee in each of its capacities hereunder (including, without limitation, as Custodian, Registrar, Paying Agent, Conversion
Agent, or transfer agent hereunder), and to each agent, custodian and other Person employed to act hereunder.


 


Section 10.02         Notice
of Defaults. The Trustee shall give the Holders notice of any Default of which a Trust Officer has actual knowledge or is deemed
to have notice under Section 10.03(i) within 90 days after the knowledge thereof so long as such Default is continuing; provided,
that (except in the case of any Default in the payment of Principal Amount of, or interest on, any of the Notes or Fundamental
Change Purchase Price or a default in the delivery of the consideration due upon conversion), the Trustee shall be protected in
withholding such notice if and so long as the Trustee in good faith determines that the withholding of such notice is in the interest
of the Holders of Notes.


 


Section 10.03        Reliance
on Documents, Opinions, Etc. Except as otherwise provided in Section 10.01:


 


(a)          the
Trustee may rely and shall be protected in acting upon any resolution, certificate, statement, instrument, opinion, report, notice,
request, consent, order, bond, debenture, note, coupon or other paper or document (whether in its original, facsimile or electronic
form) believed by it in good faith to be genuine and to have been signed or presented by the proper party or parties;


 


(b)          any
request, direction, order or demand of the Company mentioned herein shall be sufficiently evidenced by an Officers’ Certificate
(unless other evidence in respect thereof be herein specifically prescribed); and any resolution of the Board of Directors may
be evidenced to the Trustee by a copy thereof certified by the Secretary, any Assistant Secretary or the General Counsel of the
Company;


 


(c)          the
Trustee may consult with counsel of its own selection and any advice or Opinion of Counsel shall be full and complete authorization
and protection in respect of any action taken or omitted by it hereunder in good faith and in accordance with such advice or Opinion
of Counsel;


 


(d)          the
Trustee shall be under no obligation to exercise any of the rights or powers vested in it by this Indenture at the request, order
or direction of any of the Holders pursuant to the provisions of this Indenture (including upon the occurrence and during the continuance
of an Event of Default), unless such Holders shall have offered to the Trustee security or indemnity satisfactory to it against
any loss, expenses and liabilities which may be incurred therein or thereby;


 




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(e)          the
Trustee shall not be bound to make any investigation into the facts or matters stated in any resolution, certificate, statement,
instrument, opinion, report, notice, request, direction, consent, order, bond, debenture or other paper or document, but the Trustee,
in its discretion, may make such further inquiry or investigation into such facts or matters as it may see fit, and, if the Trustee
shall determine to make such further inquiry or investigation, it shall be entitled to examine the books, records and premises
of the Company, personally or by agent or attorney (at the reasonable expense of the Company and shall incur no liability of any
kind by reason of such inquiry or investigation);


 


(f)          the
Trustee may execute any of the trusts or powers hereunder or perform any duties hereunder either directly or by or through agents
or attorneys and the Trustee shall not be responsible for any misconduct or negligence on the part of any agent or attorney appointed
by it with due care hereunder;


 


(g)          the
Trustee shall not be liable for any action taken, suffered, or omitted to be taken by it in good faith and reasonably believed
by it to be authorized or within the discretion or rights or powers conferred upon it by this Indenture;


 


(h)          in
no event shall the Trustee be responsible or liable for special, indirect, or consequential loss or damage of any kind whatsoever
(including, but not limited to, loss of profit) irrespective of whether the Trustee has been advised of the likelihood of such
loss or damage and regardless of the form of action;


 


(i)          the
Trustee shall not be deemed to have notice of any Default or Event of Default unless a Trust Officer of the Trustee has actual
knowledge thereof or unless written notice of any event which is in fact such a default is received by the Trustee at the Corporate
Trust Office of the Trustee, and such notice references the Notes and this Indenture;


 


(j)          the
rights, privileges, protections, immunities and benefits given to the Trustee, including, without limitation, its right to be indemnified,
are extended to, and shall be enforceable by, the Trustee in each of its capacities hereunder, and each agent, custodian and other
Person employed to act hereunder;


 


(k)          the
permissive rights of the Trustee enumerated herein shall not be construed as duties; and


 


(l)           the
Trustee shall not be obligated to take possession of any Common Stock, whether upon conversion or in connection with any discharge
of this Indenture pursuant to Article 12 hereof, but shall satisfy its obligation as Conversion Agent by working through the stock
transfer agent of the Company from time to time as directed by the Company.


 


Section 10.04        No
Responsibility for Recitals, Etc. The recitals contained herein and in the Notes (except in the Trustee’s certificate
of authentication) shall be taken as the statements of the Company, and the Trustee assumes no responsibility for the correctness
of the same. The Trustee makes no representations as to the validity or sufficiency of this Indenture or of the Notes. The Trustee
shall not be accountable for the use or application by the Company of any Notes or the proceeds of any Notes authenticated and
delivered by the Trustee in conformity with the provisions of this Indenture.


 




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Section 10.05         Trustee,
Paying Agents, Conversion Agents or Registrar May Own Notes. The Trustee, any Paying Agent, any Conversion Agent or Registrar,
in its individual or any other capacity, may become the owner or pledgee of Notes with the same rights it would have if it were
not Trustee, Paying Agent, Conversion Agent or Registrar.


 


Section 10.06         Monies
to be Held in Trust. Subject to the provisions of Section 12.04, all monies and properties received by the Trustee shall, until
used or applied as herein provided, be held in trust for the purposes for which they were received. Money held by the Trustee in
trust hereunder need not be segregated from other funds except to the extent required by law. The Trustee shall be under no liability
for interest on any money received by it hereunder except as may be agreed in writing from time to time by the Company and the
Trustee.


 


Section 10.07         Compensation
and Expenses of Trustee. The Company covenants and agrees to pay to the Trustee from time to time, and the Trustee shall be
entitled to, compensation for all services rendered by it hereunder in any capacity (which shall not be limited by any provision
of law in regard to the compensation of a trustee of an express trust) as mutually agreed to from time to time in writing between
the Company and the Trustee, and the Company will pay or reimburse the Trustee upon its request for all expenses, disbursements
and advances reasonably incurred or made by the Trustee in accordance with any of the provisions of this Indenture (including the
compensation and the expenses and disbursements of its counsel and of all Persons not regularly in its employ) except any such
expense, disbursement or advance as may arise from its gross negligence or willful misconduct. The Company also covenants to indemnify
the Trustee (or any officer, director or employee of the Trustee), in any capacity under this Indenture and its agents and any
authenticating agent for, and to hold them harmless against, any and all loss, liability, claim or expense incurred without negligence
or willful misconduct on the part of the Trustee or such officers, directors, employees and agent or authenticating agent, as the
case may be (as determined by a final, non-appealable order of a court of competent jurisdiction), and arising out of or in connection
with the acceptance or administration of this trust or in any other capacity hereunder, including the costs and expenses of defending
themselves against any claim of liability in the premises. The obligations of the Company under this Section 10.07 to compensate
or indemnify the Trustee and to pay or reimburse the Trustee for expenses, disbursements and advances shall be secured by a lien
prior to that of the Notes upon all property and funds held or collected by the Trustee as such, except funds held in trust for
the benefit of the Holders of particular Notes. The obligation of the Company under this Section shall survive the satisfaction
and discharge of this Indenture and the resignation or removal of the Trustee.


 


When the Trustee and its agents and any
authenticating agent incur expenses or render services after an Event of Default specified in Section 8.01(i) or Section 8.01(j)
with respect to the Company occurs, the expenses and the compensation for the services are intended to constitute expenses of administration
under any bankruptcy, insolvency or similar laws.


 


Section 10.08         Officers’
Certificate as Evidence. Except as otherwise provided in Section 10.01, whenever in the administration of the provisions of
this Indenture the Trustee shall deem it necessary or desirable that a matter be proved or established prior to taking or omitting
any action hereunder, such matter (unless other evidence in respect thereof be herein specifically prescribed) may, in the absence
of negligence or willful misconduct on the part of the Trustee, be deemed to be conclusively proved and established by an Officers’
Certificate delivered to the Trustee.


 




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Section 10.09        Conflicting
Interests of Trustee. If the Trustee has or shall acquire a conflicting interest within the meaning of the Trust Indenture
Act, the Trustee shall either eliminate such interest or resign, to the extent and in the manner provided by, and subject to the
provisions of, this Indenture.


 


Section 10.10        Eligibility
of Trustee. There shall at all times be a Trustee hereunder which shall be a Person that is eligible pursuant to the Trust
Indenture Act to act as such and has a combined capital and surplus of at least $50,000,000 (or if such Person is a member of a
bank holding company system, its bank holding company shall have a combined capital and surplus of at least $50,000,000). If such
Person publishes reports of condition at least annually, pursuant to law or to the requirements of any supervising or examining
authority, then for the purposes of this Section the combined capital and surplus of such Person shall be deemed to be its combined
capital and surplus as set forth in its most recent report of condition so published. If at any time the Trustee shall cease to
be eligible in accordance with the provisions of this Section 10.10, it shall resign immediately in the manner and with the effect
hereinafter specified in this Article.


 


Section 10.11        Resignation
or Removal of Trustee.


 


(a)          The
Trustee may at any time resign by giving written notice of such resignation to the Company and to the Holders of Notes. Upon receiving
such notice of resignation, the Company shall promptly appoint a successor trustee by written instrument, in duplicate, executed
by order of the Board of Directors, one copy of which instrument shall be delivered to the resigning Trustee and one copy to the
successor trustee. If no successor trustee shall have been so appointed and have accepted appointment 60 days after the mailing
of such notice of resignation to the Holders, the resigning Trustee may, upon 10 Business Days’ notice to the Company and
the Holders, appoint a successor identified in such notice or may petition, at the expense of the Company, any court of competent
jurisdiction for the appointment of a successor trustee, or, if any Holder who has been a bona fide Holder of a Note or Notes for
at least six (6) months may, subject to the provisions of Section 8.13, on behalf of himself and all others similarly situated,
petition any such court for the appointment of a successor trustee. Such court may thereupon, after such notice, if any, as it
may deem proper and prescribe, appoint a successor trustee.


 


(b)          In
case at any time any of the following shall occur:


 


(i)          the
Trustee shall fail to comply with Section 10.09 after written request therefor by the Company or by any Holder who has been a bona
fide Holder of a Note or Notes for at least six (6) months; or


 


(ii)         the
Trustee shall cease to be eligible in accordance with the provisions of Section 10.10 and shall fail to resign after written request
therefor by the Company or by any such Holder; or


 




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(iii)        the
Trustee shall become incapable of acting, or shall be adjudged a bankrupt or insolvent, or a receiver of the Trustee or of its
property shall be appointed, or any public officer shall take charge or control of the Trustee or of its property or affairs for
the purpose of rehabilitation, conservation or liquidation;


 


then, in any such case, the Company may remove the Trustee and
appoint a successor trustee by written instrument, in duplicate, executed by order of the Board of Directors, one copy of which
instrument shall be delivered to the Trustee so removed and one copy to the successor trustee, or, subject to the provisions of
Section 8.13, any Holder who has been a bona fide Holder of a Note or Notes for at least six (6) months may, on behalf of himself
and all others similarly situated, petition any court of competent jurisdiction for the removal of the Trustee and the appointment
of a successor trustee; provided, however, that if no successor Trustee shall have been appointed and have accepted appointment
sixty (60) days after either the Company or the Holders has removed the Trustee, the Trustee so removed may petition at its own
expense any court of competent jurisdiction for an appointment of a successor trustee. Such court may thereupon, after such notice,
if any, as it may deem proper and prescribe, remove the Trustee and appoint a successor trustee.


 


(c)          The
Holders of a majority in aggregate Principal Amount of the Notes at the time outstanding may at any time remove the Trustee and
nominate a successor trustee which shall be deemed appointed as successor trustee unless, within 10 days after notice to the Company
of such nomination, the Company objects thereto, in which case the Trustee so removed or any Holder, or if such Trustee so removed
or any Holder fails to act, the Company, upon the terms and conditions and otherwise as in Section 10.11(a) provided, may petition
any court of competent jurisdiction for an appointment of a successor trustee.


 


(d)          Any
resignation or removal of the Trustee and appointment of a successor trustee pursuant to any of the provisions of this Section
8.11 shall become effective upon acceptance of appointment by the successor trustee as provided in Section 10.12.


 


Section 10.12       Acceptance
by Successor Trustee. Any successor trustee appointed as provided in Section 10.11 shall execute, acknowledge and deliver to
the Company and to its predecessor trustee an instrument accepting such appointment hereunder, and thereupon the resignation or
removal of the predecessor trustee shall become effective and such successor trustee, without any further act, deed or conveyance,
shall become vested with all the rights, powers, duties and obligations of its predecessor hereunder, with like effect as if originally
named as trustee herein; but, nevertheless, on the written request of the Company or of the successor trustee, the trustee ceasing
to act shall, upon payment of any amount then due it pursuant to the provisions of Section 10.07, execute and deliver an instrument
transferring to such successor trustee all the rights and powers of the trustee so ceasing to act. Upon request of any such successor
trustee, the Company shall execute any and all instruments in writing for more fully and certainly vesting in and confirming to
such successor trustee all such rights and powers. Any trustee ceasing to act shall, nevertheless, retain a lien upon all property
and funds held or collected by such trustee as such, except for funds held in trust for the benefit of Holders of particular Notes,
to secure any amounts then due it pursuant to the provisions of Section 10.07. The obligation of the Company under Section 10.07
shall survive the satisfaction and discharge of this Indenture and the resignation or removal of the Trustee.


 




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No successor trustee shall accept appointment
as provided in this Section 10.12 unless, at the time of such acceptance, such successor trustee shall be qualified under the provisions
of Section 10.09 and be eligible under the provisions of Section 10.10.


 


Upon acceptance of appointment by a successor
trustee as provided in this Section 10.12, the Company (or the former trustee, at the written direction of the Company) shall mail
or cause to be mailed notice of the succession of such trustee hereunder to the Holders of Notes at their addresses as they shall
appear on the Register (or otherwise send in accordance with the applicable procedures of the Depositary in the case of Global
Notes). If the Company fails to mail such notice within 10 days after acceptance of appointment by the successor trustee, the successor
trustee shall cause such notice to be mailed at the expense of the Company.


 


Section 10.13         Succession
by Merger, Etc. Any corporation into which the Trustee may be merged or converted or with which it may be consolidated, or
any corporation resulting from any merger, conversion or consolidation to which the Trustee shall be a party, or any corporation
succeeding to all or substantially all of the corporate trust business of the Trustee (including any trust created by this Indenture),
shall be the successor to the Trustee hereunder without the execution or filing of any paper or any further act on the part of
any of the parties hereto, provided that in the case of any corporation succeeding to all or substantially all of the corporate
trust business of the Trustee, such corporation shall be qualified under the provisions of Section 10.09 and eligible under the
provisions of Section 10.10.


 


In case at the time such successor to the
Trustee shall succeed to the trusts created by this Indenture, any of the Notes shall have been authenticated but not delivered,
any such successor to the Trustee may adopt the certificate of authentication of any predecessor trustee or authenticating agent
appointed by such predecessor trustee, and deliver such Notes so authenticated; and in case at that time any of the Notes shall
not have been authenticated, any successor to the Trustee or any authenticating agent appointed by such successor trustee may authenticate
such Notes in the name of the successor trustee; and in all such cases such certificates shall have the full force that is provided
in the Notes or in this Indenture; provided, however, that the right to adopt the certificate of authentication of
any predecessor Trustee or authenticate Notes in the name of any predecessor Trustee shall apply only to its successor or successors
by merger, conversion or consolidation.


 


Section 10.14         Preferential
Collection of Claims. If and when the Trustee shall be or become a creditor of the Company (or any other obligor upon the Notes),
the Trustee shall be subject to the provisions of the Trust Indenture Act regarding the collection of the claims against the Company
(or any such other obligor).


 


Section 10.15         Trustee’s
Application for Instructions from the Company. Any application by the Trustee for written instructions from the Company (other
than with regard to any action proposed to be taken or omitted to be taken by the Trustee that affects the rights of the Holders
of the Notes under this Indenture) may, at the option of the Trustee, set forth in writing any action proposed to be taken or omitted
by the Trustee under this Indenture and the date on and/or after which such action shall be taken or such omission shall be effective.
The Trustee shall not be liable for any action taken by, or omission of, the Trustee in accordance with a proposal included in
such application on or after the date specified in such application (which date shall not be less than three (3) Business Days
after the date any officer of the Company actually receives such application, unless any such officer shall have consented in writing
to any earlier date) unless prior to taking any such action (or the effective date in the case of an omission), the Trustee shall
have received written instructions in response to such application specifying the action to be taken or omitted.


 




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Article
11.

HOLDERS’ LISTS AND REPORTS BY TRUSTEE


 


Section 11.01        Company
to Furnish Trustee Names and Addresses of Holders. The Company will furnish or cause to be furnished to the Trustee:


 


(i)          semiannually,
not more than 15 days after each Regular Record Date, a list, in such form as the Trustee may reasonably require, of the names
and addresses of the Holders as of such Regular Record Date; and


 


(ii)         at
such other times as the Trustee may request in writing, within 30 days after the receipt by the Company of any such request, a
list of similar form and content as of a date not more than 15 days prior to the time such list is furnished;


 


excluding from any such list names and addresses received
by the Trustee in its capacity as Registrar; provided, however, that no such list need be furnished so long as the Trustee
is acting as Registrar.


 


Section 11.02        Preservation
of Information; Communications to Holders


 


(a)          The
Trustee shall preserve, in as current a form as is reasonably practicable, the names and addresses of Holders contained in the
most recent list furnished to the Trustee as provided in Section 11.01 and the names and addresses of Holders received by the Trustee
in its capacity as Registrar. The Trustee may destroy any list furnished to it as provided in Section 11.01 upon receipt of a new
list so furnished.


 


(b)          The
rights of Holders to communicate with other Holders with respect to their rights under this Indenture or under the Notes, and the
corresponding rights and duties of the Trustee, shall be as provided under applicable law.


 


Every Holder, by receiving and holding
the same, agrees with the Company and the Trustee that neither the Company nor the Trustee nor any agent of either of them shall
be held accountable by reason of any disclosure of information as to names and addresses of Holders made pursuant to applicable
law.


 




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Article
12.

SATISFACTION AND DISCHARGE


 


Section 12.01         Discharge
of Indenture. When (a) the Company shall deliver to the Trustee for cancellation all Notes theretofore authenticated (other
than any Notes that have been destroyed, lost or stolen and in lieu of or in substitution for which other Notes shall have been
authenticated and delivered) and not theretofore canceled, or (b) all the Notes not theretofore canceled or delivered to the Trustee
for cancellation shall have become due and payable, and the Company shall deposit with the Trustee, in trust, cash or shares of
Common Stock (in the case of any conversion) sufficient to pay on the Maturity Date, upon any Fundamental Change Date or upon any
conversion (other than any Notes that shall have been mutilated, destroyed, lost or stolen and in lieu of or in substitution for
which other Notes shall have been authenticated and delivered) not theretofore canceled or delivered to the Trustee for cancellation,
including principal and interest or shares of Common Stock and Early Conversion Payment, if applicable (in the case of any conversion)
due to such Maturity Date, Fundamental Change Purchase Date or upon conversion, as the case may be, accompanied by a verification
report, as to the sufficiency of the deposited amount, from an independent certified accountant or other financial professional
satisfactory to the Trustee, and if the Company shall also pay or deliver or cause to be paid or delivered all other sums payable
or deliverable hereunder by the Company, then this Indenture shall cease to be of further effect (except as to (i) remaining rights
of registration of transfer, substitution and exchange and conversion of Notes, (ii) rights hereunder of Holders to receive payments
of principal of and interest or (in the case of any conversion) shares of Common Stock and Early Conversion Payment, if applicable,
on, the Notes and the other rights, duties and obligations of Holders, as beneficiaries hereof with respect to the amounts, if
any, so deposited with the Trustee and (iii) the rights, obligations and immunities of the Trustee hereunder), and the Trustee,
on written demand of the Company accompanied by an Officers’ Certificate and an Opinion of Counsel as required by Section
1.02 and at the cost and expense of the Company, shall execute such instruments reasonably requested by the Company acknowledging
satisfaction of and discharging this Indenture; the Company, however, hereby agrees to reimburse the Trustee for any costs or expenses
thereafter reasonably and properly incurred by the Trustee and to compensate the Trustee for any services thereafter reasonably
and properly rendered by the Trustee in connection with this Indenture or the Notes. The obligation of the Company under Section
10.07 shall survive the satisfaction and discharge of this Indenture and the resignation or removal of the Trustee.


 


Section 12.02         Deposited
Monies to be Held in Trust by Trustee. Subject to Section 12.04, all monies and shares of Common Stock deposited with the Trustee
pursuant to Section 12.01 shall be held in trust for the sole benefit of the Holders, and such monies and shares of Common Stock
shall be applied by the Trustee to the payment, either directly or through any Paying Agent (including the Company if acting as
its own Paying Agent), to the Holders of the particular Notes for the payment or delivery upon conversion thereof have been deposited
with the Trustee, of all sums and amounts due thereon for principal and interest or upon conversion.


 


Section 12.03         Paying
Agent to Repay Monies Held. Upon the satisfaction and discharge of this Indenture, all monies then held by any Paying Agent
of the Notes (other than the Trustee) shall, upon written request of the Company, be repaid to it or paid to the Trustee, and thereupon
such Paying Agent shall be released from all further liability with respect to such Monies.


 


Section 12.04         Return
of Unclaimed Monies. Subject to the requirements of applicable abandoned property laws, any monies or shares of Common Stock
deposited with or paid to the Trustee for payment of the principal of or interest on Notes and not applied but remaining unclaimed
by the Holders of Notes for two years after the date upon which the principal of or interest on such Notes or shares of Common
Stock, as the case may be, shall have become due and payable, shall be repaid to the Company by the Trustee on demand and all liability
of the Trustee shall thereupon cease with respect to such monies or shares of Common Stock; and the Holder of any of the Notes
shall thereafter look only to the Company for any payment or delivery that such Holder may be entitled to collect unless an applicable
abandoned property law designates another Person.


 




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Section 12.05        Reinstatement.
If the Trustee or the Paying Agent is unable to apply any money or shares of Common Stock in accordance with Section 12.02 by reason
of any order or judgment of any court or governmental authority enjoining, restraining or otherwise prohibiting such application,
the Company’s obligations under this Indenture and the Notes shall be revived and reinstated as though no deposit had occurred
pursuant to Section 12.01 until such time as the Trustee or the Paying Agent is permitted to apply all such money or shares of
Common Stock in accordance with Section 12.02; provided, however, that if the Company makes any payment of interest on or
principal of any Note or delivery of shares of Common Stock due upon conversion following the reinstatement of its obligations,
the Company shall be subrogated to the rights of the Holders of such Notes to receive such payment from the money, or delivery
from the shares of Common Stock, as the case may be, held by the Trustee or Paying Agent.


 


Article
13.

SUPPLEMENTAL INDENTURES


 


Section 13.01        Supplemental
Indentures without Consent of Holders. Without the consent of any Holders, the Company, when authorized by a Board Resolution,
the Guarantors and the Trustee, at any time and from time to time, may enter into one or more indentures supplemental hereto, in
form satisfactory to the Trustee, for any of the following purposes:


 


(i)          to
cure any ambiguity, omission, defect or inconsistency, as determined in good faith by the Company and evidenced in an Officers’
Certificate;


 


(ii)         to
provide for the assumption by a Successor Company of the obligations of the Company or Guarantors contained herein and the Note
Guarantees;


 


(iii)        to
add additional guarantees with respect to the Notes;


 


(iv)        to
secure the Notes;


 


(v)         to
add to the covenants of the Company for the benefit of the Holders, or to surrender any right or power herein conferred upon the
Company;


 


(vi)        make
any change that does not adversely affect the rights of any Holder, as determined in good faith by the Company and evidenced in
an Officers’ Certificate;


 


(vii)       increase
the Conversion Rate or provide for a change to Reference Property as provided herein;


 


(viii)      provide
for the acceptance of appointment by a successor trustee or facilitate the administration of the trust under this Indenture by
more than one trustee;


 




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(ix)         complying
with the requirements of the SEC in order to effect or maintain the qualification of this Indenture under the Trust Indenture Act;


 


(x)          to
allow any Guarantor to execute a supplemental indenture and/or Note Guarantee with respect to the Notes; or


 


(xi)         to
conform the provisions of this Indenture to the “Description of Notes” section in the Private Placement Memorandum,
as evidenced in an Officers’ Certificate.


 


Section 13.02        Supplemental
Indentures with Consent of Holders. With the consent of the Holders (other than the Company and any Person controlled by the
Company (within the meaning of the definition of the term “Affiliate”)) of not less than a majority in Principal Amount
of the outstanding Notes, including, without limitation, consents obtained in connection with a purchase of, or tender offer or
exchange offer for, Notes, by Act of said Holders delivered to the Company and the Trustee, the Company, when authorized by a Board
Resolution, and the Trustee may enter into an indenture or indentures supplemental hereto for the purpose of adding any provisions
to or changing in any manner or eliminating any of the provisions of this Indenture or of modifying in any manner the rights of
the Holders under this Indenture; provided, however, that no such supplemental indenture shall, without the consent of the
Holder of each outstanding Note affected thereby, among other things:


 


(i)          reduce
the percentage in Principal Amount of Notes whose Holders must consent to an amendment of this Indenture or to waive any past default;


 


(ii)         reduce
the rate of, or extend the stated time of payment of, any interest on any Note;


 


(iii)        reduce
the Principal Amount of, or extend the Maturity Date of, any Note;


 


(iv)        make
any change that impairs or adversely affects the conversion rights of any Note as determined in good faith by the Company;


 


(v)         reduce
the Fundamental Change Purchase Price of any Note or amend or modify in any manner adverse to the Holders of Notes the Company’s
obligation to make such payment, whether through an amendment or waiver of provisions in the covenants, definitions or otherwise;


 


(vi)        make
any Note payable in a currency other than that stated in the Notes;


 


(vii)       impair
the right of any Holder to receive payment of principal of, and interest on such Holder’s Notes on or after the due dates
therefor or to institute suit for the enforcement of any payment on or with respect to such Holder’s Notes;


 


(viii)      change
the ranking of the Notes;


 




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(ix)         release
any Guarantor from any of its obligations under its Note Guarantee or this Indenture, except in accordance with the terms hereof;
or


 


(x)          modify
any of the provisions of this Section 13.02 or Section 8.02(b).


 


In addition, Section 6.04 (a) may not, regardless
of the consent of any Holders, be amended or waived in any respect unless (A) the amendment provisions of this Section 13.02 as
to non-enumerated amendments is complied with and (B) the Company receives an approval from the NASDAQ Stock Market, delivered
to the Trustee, confirming that such amendment or waiver would not result in a violation of Rule 5635 of the NASDAQ Stock Market
or if applicable any equivalent rule of any other Principal Market.


 


Sections. 6.04(c), (d), (e), (f) and (g)
may not be amended or waived by any party hereunder, regardless of the consent of any Holders or the Company.


 


In addition, the limitations in Section
4.13 hereof may not be amended or waived without the prior consent of the Holders of at least two-thirds of the aggregate principal
amount of Notes then outstanding. Additionally, the Trustee shall be entitled to conclusively rely on the consents, Acts of Holders
and calculations delivered by the Company to the Trustee.


 


It shall not be necessary for any Act of
Holders under this Section 13.02 to approve the particular form of any proposed supplemental indenture, but it shall be sufficient
if such Act shall approve the substance thereof.


 


Section 13.03        Execution
of Supplemental Indentures. In executing, or accepting the additional trusts created by, any supplemental indenture permitted
by this Article 13 or the modifications thereby of the trusts created by this Indenture, the Trustee shall be provided with, and
(subject to Section 10.01) shall be fully protected in conclusively relying upon, in addition to the documents required by Section
1.02, an Opinion of Counsel stating that the execution of such supplemental indenture is authorized or permitted by this Indenture
and constitutes the legal, valid and binding obligation of the Company, enforceable against it in accordance with its terms. Subject
to the preceding sentence, the Trustee shall sign such supplemental indenture if the same does not adversely affect the Trustee’s
own rights, duties or immunities under this Indenture or otherwise. The Trustee may, but shall not be obligated to, enter into
any such supplemental indenture that adversely affects the Trustee’s own rights, duties or immunities under this Indenture
or otherwise.


 


Section 13.04        Effect
of Supplemental Indentures. Upon the execution of any supplemental indenture under this Article 13, this Indenture shall be
modified in accordance therewith, and such supplemental indenture shall form a part of this Indenture for all purposes; and every
Holder theretofore or thereafter authenticated and delivered hereunder shall be bound thereby.


 


Section 13.05        Reference
in Notes to Supplemental Indentures. Notes authenticated and delivered after the execution of any supplemental indenture pursuant
to this Article 13 shall bear a notation in form approved by the Trustee as to any matter provided for in such supplemental indenture.
If the Company shall so determine, new Notes so modified as to conform, in the opinion of the Trustee and the Company, to any such
supplemental indenture may be prepared and executed by the Company and authenticated and delivered by the Trustee in exchange for
outstanding Notes.


 




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Section 13.06         Notice
to Holders of Supplemental Indentures. The Company shall cause notice of the execution of any supplemental indenture to be
delivered to each Holder, at such Holder’s address appearing on the Register provided for in this Indenture, within 20 days
after execution thereof. Failure to deliver such notice, or any defect in such notice, shall not impair or affect the legality
or validity of such supplemental indenture.


 


Article
14.

MISCELLANEOUS


 


Section 14.01         Notices.
Any notice or communication shall be in writing (including telecopy promptly confirmed in writing) and delivered in person or mailed
by first-class mail addressed as follows:


 


if to the Company and/or any Guarantor:


 


Digital Turbine, Inc.

300 Guadalupe Street, Suite 302

Austin, TX 78701

Attention: Chief Executive Officer

Facsimile: (737) 210-8855


 


with a copy to:


 


Manatt, Phelps & Phillips, LLP

11355 W. Olympic Blvd.

Los Angeles, CA 90064

Attention: Ben D. Orlanski

Facsimile: (310) 312-4000


 


if to the Trustee:


 


U.S. Bank National Association

633 West Fifth Street, 24th Floor


Los Angeles, California 90071


Attention: Bradley Scarbrough, Vice President
(Digital Turbine Convertible Notes)


Facsimile: (213) 615-6197


 


The Company or the Trustee by notice to
the other may designate additional or different addresses for subsequent notices or communications.


 


Any notice or communication mailed to a
registered Holder shall be mailed to the Holder at the Holder’s address as it appears on the registration books of the Registrar
and shall be sufficiently given if so mailed within the time prescribed.


 




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Failure to mail a notice or communication
to a Holder or any defect in it shall not affect its sufficiency with respect to other Holders. If a notice or communication is
mailed in the manner provided above, it is duly given, whether or not the addressee receives it, except that notices to the Trustee
shall be effective only upon receipt.


 


Notwithstanding any other provision of this
Indenture or any Note, where this Indenture or any Note provides for notice of any event (including any notice of redemption or
purchase) to a Holder of a Global Note (whether by mail or otherwise), such notice shall be sufficiently given if given to the
Depositary for such Note (or its designee) pursuant to the Applicable Procedures.


 


Section 14.02        Certificate
and Opinion as to Conditions Precedent. Upon any request or application by the Company to the Trustee to take or refrain from
taking any action under this Indenture, the Company shall furnish to the Trustee:


 


(a)          an
Officers’ Certificate in form reasonably satisfactory to the Trustee stating that, in the opinion of the signers, all conditions
precedent, if any, provided for in this Indenture relating to the proposed action have been complied with; and


 


(b)          if
requested by the Trustee, an Opinion of Counsel in form reasonably satisfactory to the Trustee stating that, in the opinion of
such counsel, all such conditions precedent have been complied with.


 


Section 14.03        When
Notes Are Disregarded. In determining whether the Holders of the required Principal Amount of Notes have concurred in any direction,
waiver or consent, Notes owned by the Company or by any Affiliate of the Company shall be disregarded and deemed not to be outstanding,
except that, for the purpose of determining whether the Trustee shall be protected in relying on any such direction, waiver or
consent, only Notes which a Trust Officer of the Trustee actually knows are so owned shall be so disregarded. Also, subject to
the foregoing, only Notes outstanding at the time shall be considered in any such determination.


 


Section 14.04        Rules
by Trustee, Paying Agent and Registrar. The Trustee may make reasonable rules for action by, or a meeting of, Holders. The
Registrar and the Paying Agent may make reasonable rules for their functions.


 


Section 14.05        Legal
Holidays. If an Interest Payment Date is a Legal Holiday, payment shall be made on the next succeeding day that is not a Legal
Holiday, and no interest shall accrue for the intervening period. If a Regular Record Date is a Legal Holiday, the Regular Record
Date shall not be affected. In any case where the Maturity Date or Fundamental Change Purchase Date, as the case may be, of any
Note is a Legal Holiday, then (notwithstanding any other provision of this Indenture or of the Notes) payment of principal need
not be made on such date, but may be made on the next succeeding day that is not a Legal Holiday, with the same force and effect
as if made on such Maturity Date or Fundamental Change Purchase Date, as the case may be.


 


Section 14.06         Governing
Law. THIS INDENTURE AND THE NOTES, AND ANY CLAIM, CONTROVERSY OR DISPUTE ARISING UNDER OR RELATED TO THIS INDENTURE OR THE
NOTES, SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK.


 




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Section 14.07         No
Recourse against Others. An incorporator, director, officer, employee, Affiliate or shareholder of the Company or any Guarantor,
solely by reason of this status, shall not have any liability for any obligations of the Company under the Notes, the Note Guarantees,
this Indenture or for any claim based on, in respect of or by reason of such obligations or their creation. By accepting a Note,
each Holder shall waive and release all such liability. The waiver and release shall be part of the consideration for the issue
of the Notes.


 


Section 14.08         Successors.
All agreements of the Company in this Indenture and the Notes shall bind their respective successors. All agreements of the Trustee
in this Indenture shall bind its successors.


 


Section 14.09         Multiple
Originals. The parties may sign any number of copies of this Indenture. Each signed copy shall be an original, but all of them
together represent the same agreement. One signed copy is enough to prove this Indenture. Delivery of an executed counterpart by
facsimile or by electronic means shall be effective as delivery of a manually executed counterpart thereof.


 


Section 14.10         Table
of Contents; Headings. The table of contents, cross-reference sheet and headings of the Articles and Sections of this Indenture
have been inserted for convenience of reference only, are not intended to be considered a part hereof and shall not modify or restrict
any of the terms or provisions hereof.


 


Section 14.11         Severability
Clause. In case any provision in this Indenture shall be invalid, illegal or unenforceable, the validity, legality and enforceability
of the remaining provisions shall not in any way be affected or impaired thereby and such provision shall be ineffective only to
the extent of such invalidity, illegality or unenforceability.


 


Section 14.12         Calculations.
Except as otherwise provided herein, the Company (or its agents) will be responsible for making all calculations called for under
this Indenture or the Notes. These calculations include, but are not limited to, determinations of the Last Reported Sale Price,
VWAPs, the Exchange Cap, the Fundamental Change Repurchase Price, the Redemption Price, Additional Interest, accrued interest payable
on the Notes and the conversion rate of the Notes. The Company (or its agents) will make all such calculations in good faith and,
absent manifest error, its calculations will be final and binding on Holders. The Company (or its agents) upon request will provide
a schedule of its calculations to each of the Trustee and the Conversion Agent, and each of the Trustee and Conversion Agent is
entitled to rely conclusively upon the accuracy of such calculations without independent verification. The Trustee will deliver
a copy of such schedule to any Holder upon the written request of such Holder.


 


Section 14.13         Waiver
of Jury Trial. EACH OF THE COMPANY AND THE TRUSTEE 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 AGREEMENT, THE SECURITIES OR
THE TRANSACTION CONTEMPLATED THEREBY.


 




    	 	108	 



     


    

 


Section 14.14        Consent
to Jurisdiction.


 


(a)          The
Company hereby irrevocably and unconditionally submits, for itself and its property, to the nonexclusive jurisdiction of any New
York State court or federal court of the United States sitting in the State and City of New York, County and Borough of Manhattan,
and any appellate court from any thereof, in any action or proceeding arising out of or relating to this Indenture or the Notes,
or for recognition or enforcement of any judgment, and each of the parties hereto hereby irrevocably and unconditionally agrees
that all claims in respect of any such action or proceeding may be heard and determined in such state court sitting in the State
and City of New York, County and Borough of Manhattan or, to the extent permitted by law, in such federal court sitting in the
State and City of New York, County and Borough of Manhattan.


 


(b)          The
Company hereby irrevocably and unconditionally waives, to the fullest extent it may legally and effectively do so, any objection
which it may now or hereafter have to the laying of venue of any suit, action proceeding arising out of or relating to this Indenture
or the Notes in any New York State or federal court. Each of the parties hereto hereby irrevocably waives, to the fullest extent
permitted by law, the defense of an inconvenient forum to the maintenance of such action or proceeding in any such court.


 


Section 14.15        Force
Majeure. In no event shall the Trustee be responsible or liable for any failure or delay in the performance of its obligations
hereunder arising out of or caused by, directly or indirectly, forces beyond its control, including, without limitation, strikes,
work stoppages, accidents, acts of war or terrorism, civil or military disturbances, nuclear or natural catastrophes or acts of
God, and interruptions, loss or malfunctions of utilities, communications or computer (software or hardware) services; it being
understood that the Trustee shall use reasonable efforts which are consistent with accepted practices in the banking industry to
resume performance as soon as practicable under the circumstances.


 


Section 14.16        U.S.A.
Patriot Act. The parties hereto acknowledge that in accordance with Section 326 of the U.S.A. Patriot Act, the Trustee, like
all financial institutions and in order to help fight the funding of terrorism and money laundering, is required to obtain, verify,
and record information that identifies each person or legal entity that establishes a relationship or opens an account with the
Trustee. The parties to this Indenture agree that they will provide the Trustee with such information as it may request in order
for the Trustee to satisfy the requirements of the U.S.A. Patriot Act.


 


Article
15.

NOTE GUARANTEES


 


Section 15.01        Guarantee.


 


(a)          Subject
to this Article 15, each of the Guarantors hereby, jointly and severally, unconditionally guarantees to each Holder of a Note authenticated
and delivered by the Trustee and to the Trustee and its successors and assigns, irrespective of the validity and enforceability
of this Indenture, the Notes or the obligations of the Company hereunder or thereunder, that:


 


(i)          the
principal of, Additional Interest, if any, and interest on, and any other payment due to Holders pursuant to, the Notes or this
Indenture will be promptly paid in full when due, whether at maturity, by acceleration, redemption or otherwise, and interest on
the overdue principal of and interest on the Notes, if any, if lawful, and all other obligations of the Company to the Holders
or the Trustee hereunder or thereunder will be promptly paid in full or performed, all in accordance with the terms hereof and
thereof; and


 




    	 	109	 



     


    

 


(ii)         in
case of any extension of time of payment or renewal of any Notes or any of such other obligations, that same will be promptly paid
in full when due or performed in accordance with the terms of the extension or renewal, whether at stated maturity, by acceleration
or otherwise.


 


Failing payment when due of any amount so
guaranteed or any performance so guaranteed for whatever reason, the Guarantors will be jointly and severally obligated to pay
the same immediately. Each Guarantor agrees that this is a guarantee of payment and not a guarantee of collection.


 


(b)          The
Guarantors hereby agree that their obligations hereunder are unconditional, irrespective of the validity, regularity or enforceability
of the Notes or this Indenture, the absence of any action to enforce the same, any waiver or consent by any Holder of the Notes
with respect to any provisions hereof or thereof, the recovery of any judgment against the Company, any action to enforce the same
or any other circumstance which might otherwise constitute a legal or equitable discharge or defense of a Guarantor. Each Guarantor
hereby waives diligence, presentment, demand of payment, filing of claims with a court in the event of insolvency or bankruptcy
of the Company, any right to require a proceeding first against the Company, protest, notice and all demands whatsoever and covenant
that this Note Guarantee will not be discharged except by complete performance of the obligations contained in the Notes and this
Indenture.


 


(c)          If
any Holder or the Trustee is required by any court or otherwise to return to the Company, the Guarantors or any custodian, trustee,
liquidator or other similar official acting in relation to either the Company or the Guarantors, any amount paid either to the
Trustee or such Holder, the Note Guarantees, to the extent theretofore discharged, will be reinstated in full force and effect.


 


(d)          Each
Guarantor agrees that it will not be entitled to any right of subrogation in relation to the Holders in respect of any obligations
guaranteed hereby until payment in full of all obligations guaranteed hereby. Each Guarantor further agrees that, as between the
Guarantors, on the one hand, and the Holders and the Trustee, on the other hand:


 


(i)          the
maturity of the obligations guaranteed hereby may be accelerated as provided in Article 8 hereof for the purposes of the Note Guarantees,
notwithstanding any stay, injunction or other prohibition preventing such acceleration in respect of the obligations guaranteed
hereby, and


 


(ii)         in
the event of any declaration of acceleration of such obligations as provided in Article 8 hereof, such obligations (whether or
not due and payable) will forthwith become due and payable by the Guarantors for the purpose of the Note Guarantees.


 




    	 	110	 



     


    

 


The Guarantors will have the right to seek
contribution from any non-paying Guarantor so long as the exercise of such right does not impair the rights of the Holders under
the Note Guarantees.


 


Section 15.02        Limitation
on Guarantor Liability.


 


Each Guarantor, and by its acceptance of
Notes, each Holder, hereby confirms that it is the intention of all such parties that the Note Guarantee of such Guarantor not
constitute a fraudulent transfer or conveyance for purposes of applicable federal, state or foreign bankruptcy, insolvency, reorganization
or other similar law or any similar federal, state, provincial or other applicable law to the extent applicable to any Note Guarantee.
To effectuate the foregoing intention, the Trustee, the Holders and the Guarantors hereby irrevocably agree that the obligations
of such Guarantor will be limited to the maximum amount that will, after giving effect to such maximum amount and all other contingent
and fixed liabilities of such Guarantor that are relevant under such laws, and after giving effect to any collections from, rights
to receive contribution from or payments made by or on behalf of any other Guarantor in respect of the obligations of such other
Guarantor under this Article 15, result in the obligations of such Guarantor under its Note Guarantee not constituting a fraudulent
transfer or conveyance.


 


Section 15.03        Execution
and Delivery of Note Guarantee.


 


To evidence its Note Guarantee set forth
in Section 15.01 hereof, each Guarantor hereby agrees that a notation of such Note Guarantee substantially in the form attached
as Exhibit C hereto will be endorsed by an Officer of such Guarantor on each Note authenticated and delivered by the Trustee
and that this Indenture will be executed on behalf of such Guarantor by one of its Officers.


 


Each Guarantor hereby agrees that its Note
Guarantee set forth in Section 15.01 hereof will remain in full force and effect notwithstanding any failure to endorse on each
Note a notation of such Note Guarantee.


 


If an Officer whose signature is on this
Indenture or on the Note Guarantee no longer holds that office at the time the Trustee authenticates the Note on which a Note Guarantee
is endorsed, the Note Guarantee will be valid nevertheless.


 


The delivery of any Note by the Trustee,
after the authentication thereof hereunder, will constitute due delivery of the Note Guarantee set forth in this Indenture on behalf
of the Guarantors.


 


In the event that the Company or any Guarantor
acquires or creates another Subsidiary after the date of this Indenture, if required by Section 4.14 hereof, the Company will cause
such Subsidiary to comply with the provisions of Section 4.14 hereof and this Article 15, to the extent applicable.


 




    	 	111	 



     


    

 


Section 15.04        Guarantors
May Consolidate, etc., on Certain Terms.


 


A Guarantor may not sell or otherwise dispose
of all or substantially all of their assets (other than assets determined to be held by such Guarantor as a qualified intermediary
on behalf of third-party taxpayers pursuant to Internal Revenue Code Section 1031) to, or amalgamate or consolidate with or merge
with or into (whether or not such Guarantor is the surviving Person) another Person, other than the Company, unless:


 


(i)          immediately
after giving effect to that transaction, no Default or Event of Default exists; and


 


(ii)         the
Person acquiring the assets in any such sale or disposition or the Person formed by or surviving any such amalgamation, consolidation
or merger assumes all the obligations of such Guarantor under this Indenture and a Note Guarantee pursuant to a supplemental indenture
reasonably satisfactory to the Trustee.


 


In case of any such consolidation, merger,
sale or conveyance and upon the assumption by the successor Person, by supplemental indenture, executed and delivered to the Trustee
and satisfactory in form to the Trustee, of the Note Guarantee endorsed upon the Notes and the due and punctual performance of
all of the covenants and conditions of this Indenture to be performed by the Guarantor, such successor Person will succeed to and
be substituted for the Guarantor with the same effect as if it had been named herein as a Guarantor. Such successor Person thereupon
may cause to be signed any or all of the Note Guarantees to be endorsed upon all of the Notes issuable hereunder which theretofore
shall not have been signed by the Company and delivered to the Trustee. All of the Note Guarantees so issued will in all respects
have the same legal rank and benefit under this Indenture as the Note Guarantees theretofore and thereafter issued in accordance
with the terms of this Indenture as though all of such Note Guarantees had been issued at the date of the execution hereof.


 


Section 15.05        Releases.


 


Upon satisfaction and discharge of this
Indenture in accordance with Article 12 hereof, each Guarantor will be released and relieved of any obligations under its Note
Guarantee.


 


Any Guarantor, not released from its obligations
under its Note Guarantee as provided in Section 15.04 or this Section 15.05, will remain liable for the full amount of principal
of, Additional Interest, if any, and interest on, and any other payment due to Holders pursuant to, the Notes or this Indenture
and for the other obligations of any Guarantor under this Indenture as provided in this Article 15.


 


[Remainder of the page intentionally
left blank]


 




    	 	112	 



     


    

 


IN WITNESS WHEREOF, the parties hereto have
caused this Indenture to be duly executed as of the day and year first above written.


 


	 	DIGITAL TURBINE, INC.
	 	 	 
	 	By:	 
	 	Name:	William Stone
	 	Title:	Chief Executive Officer
	 	 	 
	 	By:	 
	 	Name:	Barrett Garrison
	 	Title:	Chief Financial Officer
	 	 	 
	 	GUARANTORS:
	 	 
	 	Digital Turbine USA, Inc., a Delaware corporation
	 	 	 
	 	By:	 
	 	Name:	 
	 	Title:	 
	 	 	 
	 	Digital Turbine Media, Inc., a Delaware corporation
	 	 	 
	 	By:	 
	 	Name:	 
	 	Title:	 
	 	 	 
	 	Digital Turbine (EMEA) Ltd., a company formed under the laws of Israel
	 	 	 
	 	By:	 
	 	Name:	 
	 	Title:	 
	 	 	 
	 	By:	 
	 	Name:	 
	 	Title:	 
	 	 	 
	 	Digital Turbine Asia Pacific Pty Ltd., a company formed under the laws of Australia
	 	 	 
	 	By:	 
	 	Name:	 
	 	Title:	 


 


[Trustee Signature Follows]


 




    	 	113	 



     


    

 


	 	U.S. Bank National Association
	 	as Trustee
	 	 	 
	 	By:	 
	 	Name:	 
	 	Title:	 


 




    	 	114	 



     


    

 


Schedule
A


 


Share Price


 


	Effective Date	 	$	1.25	 	 	$	1.56	 	 	$	2.00	 	 	$	2.50	 	 	$	3.00	 	 	$	3.50	 	 	$	4.00	 	 	$	5.00	 	 	$	7.50	 	 	$	10.00	 	 	$	15.00	 	 	$	20.00	 
	23-Sep-16	 	 	160.000	 	 	 	137.528	 	 	 	122.927	 	 	 	110.849	 	 	 	100.840	 	 	 	85.207	 	 	 	73.564	 	 	 	57.386	 	 	 	36.135	 	 	 	25.770	 	 	 	15.844	 	 	 	11.222	 
	23-Sep-17	 	 	132.007	 	 	 	110.253	 	 	 	98.225	 	 	 	88.380	 	 	 	80.288	 	 	 	67.747	 	 	 	58.465	 	 	 	45.616	 	 	 	28.734	 	 	 	20.461	 	 	 	12.485	 	 	 	8.770	 
	23-Sep-18	 	 	104.013	 	 	 	80.313	 	 	 	70.355	 	 	 	62.570	 	 	 	56.399	 	 	 	47.172	 	 	 	40.545	 	 	 	31.544	 	 	 	19.806	 	 	 	14.016	 	 	 	8.358	 	 	 	5.711	 
	23-Sep-19	 	 	76.020	 	 	 	44.327	 	 	 	34.464	 	 	 	28.428	 	 	 	24.566	 	 	 	19.866	 	 	 	16.941	 	 	 	13.181	 	 	 	8.313	 	 	 	5.887	 	 	 	3.468	 	 	 	2.287	 
	23-Sep-20	 	 	48.027	 	 	 	0.000	 	 	 	0.000	 	 	 	0.000	 	 	 	0.000	 	 	 	0.000	 	 	 	0.000	 	 	 	0.000	 	 	 	0.000	 	 	 	0.000	 	 	 	0.000	 	 	 	0.000	 



 




    	 	1	 



     


    

 


EXHIBIT A


 


[FORM OF RESTRICTED LEGEND]


 


THIS SECURITY, THE ATTACHED GUARANTEE
AND THE SHARES OF COMMON STOCK ISSUABLE UPON CONVERSION OF THIS SECURITY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933,
AS AMENDED (THE “SECURITIES ACT”), AND MAY NOT BE OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED EXCEPT IN ACCORDANCE
WITH THE FOLLOWING SENTENCE. BY ITS ACQUISITION HEREOF OR OF A BENEFICIAL INTEREST HEREIN, THE ACQUIRER:


 


		(1)	REPRESENTS THAT IT AND ANY ACCOUNT FOR WHICH IT IS ACTING
IS A “QUALIFIED INSTITUTIONAL BUYER” (WITHIN THE MEANING OF RULE 144A UNDER THE SECURITIES ACT) AND THAT IT EXERCISES
SOLE INVESTMENT DISCRETION WITH RESPECT TO EACH SUCH ACCOUNT, AND



 


		(2)	AGREES FOR THE BENEFIT OF DIGITAL TURBINE, INC. (THE
“COMPANY”) THAT IT WILL NOT OFFER, SELL, PLEDGE OR OTHERWISE TRANSFER THIS SECURITY OR ANY BENEFICIAL INTEREST HEREIN
PRIOR TO THE RESALE RESTRICTION TERMINATION DATE (AS DEFINED BELOW), EXCEPT:



 


		(A)	TO THE COMPANY OR ANY SUBSIDIARY THEREOF, OR



 


		(B)	PURSUANT TO A REGISTRATION STATEMENT THAT HAS BECOME EFFECTIVE
UNDER THE SECURITIES ACT THAT COVERS RESALE THIS SECURITY, OR



 


		(C)	TO A QUALIFIED INSTITUTIONAL BUYER IN COMPLIANCE WITH RULE
144A UNDER THE SECURITIES ACT, OR



 


THE “RESALE RESTRICTION TERMINATION
DATE” MEANS THE LATER OF: (1) THE DATE THAT A REGISTRATION STATEMENT UNDER THE SECURITIES ACT WITH RESPECT TO THIS SECURITY
AND BENEFICIAL INTERESTS HEREIN HAS BECOME EFFECTIVE; AND (2) SUCH OTHER DATE AS MAY BE REQUIRED BY APPLICABLE LAW.


 


		(D)	PURSUANT TO AN EXEMPTION FROM REGISTRATION PROVIDED BY
RULE 144 UNDER THE SECURITIES ACT OR ANY OTHER AVAILABLE EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT.



 




    	 	A-1	 



     


    

 


PRIOR TO THE REGISTRATION OF ANY TRANSFER
IN ACCORDANCE WITH CLAUSE (2)(D) ABOVE, THE COMPANY AND THE TRUSTEE RESERVE THE RIGHT TO REQUIRE THE DELIVERY OF SUCH LEGAL OPINIONS,
CERTIFICATIONS OR OTHER EVIDENCE AS MAY REASONABLY BE REQUIRED IN ORDER TO DETERMINE THAT THE PROPOSED TRANSFER IS BEING MADE IN
COMPLIANCE WITH THE SECURITIES ACT AND APPLICABLE STATE SECURITIES LAWS. NO REPRESENTATION IS MADE AS TO THE AVAILABILITY OF ANY
EXEMPTION FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT.


 


NO AFFILIATE (AS DEFINED IN RULE 144
UNDER THE SECURITIES ACT) OF THE COMPANY OR PERSON THAT HAS BEEN AN AFFILIATE (AS DEFINED IN RULE 144 UNDER THE SECURITIES ACT)
OF THE COMPANY DURING THE IMMEDIATELY PRECEDING NINETY DAYS MAY RESELL THIS SECURITY OR A BENEFICIAL INTEREST HEREIN.


 




    	 	A-2	 



     


    

 


EXHIBIT B


 


[FORM OF FREE TRANSFERABILITY CERTIFICATE]


 


Officers’ Certificate


 


[NAME OF OFFICER], the [TITLE] of Digital
Turbine, Inc., a Delaware corporation (the “Company”) and [NAME OF OFFICER], the [TITLE] of the Company do hereby
certify, in connection with the sale of $16 million of the Company’s 8.75% Convertible Senior Notes due 2020 (the “Notes”)
pursuant to the terms of the Indenture, dated as of September 28, 2016 (as may be amended or supplemented from time to time, the
“Indenture”), by and among the Company and U.S. Bank, National Association (the “Trustee”),
that:


 


The undersigned are permitted to sign this “Officers’
Certificate” on behalf of the Company, as the term “Officers’ Certificate” is defined in the Indenture.


 


The undersigned have read, and thoroughly examined, the Indenture
and the definitions therein relating thereto. Any capitalized terms used but not defined herein have the meanings given to them
in the Indenture.


 


In the opinion of the undersigned, the undersigned have made
such examination as is necessary to enable the undersigned to express an informed opinion as to whether or not all conditions precedent
to the removal of the Restricted Notes Legend described herein as provided for in the Indenture have been complied with.


 


All conditions precedent described herein as provided for in
the Indenture have been complied with.


 


The Notes have become Freely Tradable.


 


In accordance with Section 3.08 of the Indenture,
the Company hereby instructs you as follows:


 


1. To take those actions necessary so that
the Restricted Notes Legend and set forth on the Restricted Global Notes shall be deemed removed from the Global Notes in accordance
with the terms and conditions of the Notes and as provided in the Indenture, without further action on the part of the Holders.


 


2. To take those actions necessary so that
the restricted CUSIP number for the Notes shall be removed from the Global Notes and replaced with an unrestricted CUSIP number,
which unrestricted CUSIP number shall be 25400W AB8, in accordance with the terms and conditions of the Global Notes and as provided
in the Indenture, without further action on the part of the Holders.


 


[Signature page follows.]


 




    	 	B-1	 



     


    

 


IN WITNESS WHEREOF, we have signed this
certificate as of [              ].


 


	 	DIGITAL TURBINE, INC.,
	 	 	 
	 	By:	 
	 	Name:	 
	 	Title:	 


 




    	 	B-2	 



     


    

 


EXHIBIT C


 


[FORM OF NOTATION OF NOTE GUARANTEE]


 


NOTATION OF NOTE GUARANTEE


 


For value received, each Guarantor (which term includes any
successor Person under the Indenture) has, jointly and severally, unconditionally guaranteed, to the extent set forth in the Indenture
and subject to the provisions in the Indenture dated as of September 28, 2016 (the “Indenture’”) among
Digital Turbine, Inc., (the “Company”), the Guarantors party thereto and U.S. Bank N.A., as trustee (the “Trustee”),
(a) the due and punctual payment of the principal of, Additional Interest, if any, and interest on, the Notes, whether
at maturity, by acceleration, redemption or otherwise, the due and punctual payment of interest on the overdue principal of and
interest on the Notes, if any, if lawful, and the due and punctual performance of all other obligations of the Company to the Holders
and the Trustee all in accordance with the terms of the Indenture and (b) in case of any extension of time of payment or renewal
of any Notes or any of such other obligations, that the same will be promptly paid in full when due or performed in accordance
with the terms of the extension or renewal, whether at stated maturity, by acceleration or otherwise. The obligations of the Guarantors
to the Holders of Notes and to the Trustee pursuant to the Note Guarantee and the Indenture are expressly set forth in Article
15 of the Indenture and reference is hereby made to the Indenture for the precise terms of the Note Guarantee. Each Holder of a
Note, by accepting the same, agrees to and shall be bound by such provisions. Capitalized terms used but not defined herein have
the meanings given to them in the Indenture.


 


[Signature Pages Follow] 


 




    	 	C-1	 



     


    

 


	 	GUARANTORS:
	 	 
	 	Digital Turbine USA, Inc., a Delaware corporation
	 	 	 
	 	By:	 
	 	Name:	 
	 	Title:	 
	 	 	 
	 	Digital Turbine Media, Inc., a Delaware corporation
	 	 	 
	 	By:	 
	 	Name:	 
	 	Title:	 
	 	 	 
	 	Digital Turbine (EMEA) Ltd., a company formed under the laws of Israel
	 	 	 
	 	By:	 
	 	Name:	 
	 	Title:	 
	 	 	 
	 	By:	 
	 	Name:	 
	 	Title:	 
	 	 	 
	 	Digital Turbine Asia Pacific Pty Ltd., a company formed under the laws of Australia
	 	 	 
	 	By:	 
	 	Name:	 
	 	Title:	 


 




    	 	C-2