Document:

AMARANTUS BIOSCIENCE HOLDINGS, Inc.

        655 Montgomery Street,

        Suite 900

        San Francisco, CA 94111

        Phone: 415 688 4484  Fax: 408 852 4427

        www.amarantus.com          info@amarantus.com

 

 

December 31, 2014

 

Dr. John Commissiong

1269 Lakeside Drive, Apt. 1103 

Sunnyvale, CA 94085

 

 

Dear Mr. Commissiong:

 

This offer letter will
confirm your continued employment with Amarantus Bioscience Holdings, Inc. (the “Company”) as its Chief Scientific
Officer. This offer letter supersedes any and all previous employment agreements with the Company, whether oral or in writing.
Your continued employment shall be for an initial term of one year following your acceptance of this offer letter (the “Initial
Term”). Following the Initial Term, your employment with the Company shall be at will.

 

Initially your annual
base salary shall be $175,000 ($14,583.33 per month) (your “Base Salary”), which will be paid semi-monthly in accordance
with the Company’s normal payroll procedures. Upon the Company’s “up-listing” to National Listing, your
annual Base Salary will immediately be increased to $266,000, on the next regularly scheduled payroll date following the up-listing.
As an employee, you are also eligible to receive certain employee benefits. You should note that the Company may modify job titles,
salaries and benefits from time to time as it deems necessary.

 

In addition to your
Base Salary, you will also be eligible for a discretionary performance bonus (the “Performance Bonus”) equal to up
to 30% of your Base Salary. Award of this Performance Bonus is conditioned upon satisfaction, in the Company’s sole discretion,
of Performance Bonus Conditions to be proposed by the CEO and agreed with the Compensation Committee. The milestones and their
weight for your 2014 Performance Bonus is attached hereto as Exhibit A. The Performance Bonus, if any, shall be paid in
accordance with applicable law and on or before March 15th of each year during which you are still employed by the Company. You
will not be eligible for a Performance Bonus if you are not employed by the Company on the date upon which the Performance Bonus,
if any, is to be paid.

 

The Company will also
provide you with a Signing Bonus of $10,000, less standard deductions and withholdings, within ten (10) days of you execution of
this Employment Agreement.

 

In addition, it will
be recommended at the first meeting of the Company’s Board of Directors following your acceptance of this offer letter that
the Company grant you an option to purchase 3.5 million shares of the Company’s Common Stock at a price per share equal to
the fair market value per share of the Common Stock on the date of grant, as determined by the Company’s Board of Directors.
25% of the shares subject to the option shall vest 12 months after the date your vesting begins subject to your continuing employment
with the Company, and no shares shall vest before such date. The remaining shares shall vest monthly over the next 36 months in
equal monthly amounts subject to your continuing employment with the Company. This option grant shall be subject to the terms and
conditions of the Company’s Equity Incentive Plan and Stock Option Agreement, including vesting requirements. No right to
any stock is earned or accrued until such time that vesting occurs, nor does the grant confer any right to continue vesting or
employment.

 

    	 

    	 

    

 

In addition I am pleased
to confirm it is the intention of the Company to establish a separate wholly owned subsidiary (the “Research Subsidiary)
to accommodate all the Company’s Discovery Research activities; that a standalone Stock Option Scheme will be established
for that Research Subsidiary and that you will be granted an option to purchase shares in the Research Subsidiary. The details
of this Stock Option Plan for the Research Subsidiary will be established in consultation with the Company’s CFO.

 

Also I confirm that the Founders Royalty
as agreed by the Board of Directors and documented in the Minutes of the Board Meeting held on 26 October 2010 will remain in place.

 

We also ask that, if
you have not already done so, you disclose to the Company any and all agreements relating to your prior employment that may affect
your eligibility to be employed by the Company or limit the manner in which you may be employed. It is the Company’s understanding
that any such agreements will not prevent you from performing the duties of your position and you represent that such is the case.
Moreover, you agree that, during the term of your employment with the Company, you will not engage in any other employment, occupation,
consulting or other business activity directly related to the business in which the Company is now involved or becomes involved
during the term of your employment, nor will you engage in any other activities that conflict with your obligations to the Company.
Similarly, you agree not to bring any third party confidential information to the Company, including that of your former employer,
and that in performing your duties for the Company you will not in any way utilize any such information.

 

As a Company employee,
you are expected to abide by the Company’s rules and standards. Specifically, you are required to sign an acknowledgment
that you have read and that you understand the Company’s rules of conduct which are included in the Company Handbook.

 

As a condition of your
employment, you are also required to sign and comply with an At-Will Employment, Confidential Information, Invention Assignment
and Arbitration Agreement which requires, among other provisions, the assignment of patent rights to
any invention made during your employment at the Company, and non-disclosure of Company proprietary information. In the event of
any dispute or claim relating to or arising out of our employment relationship, you and the Company agree that (i) any and
all disputes between you and the Company shall be fully and finally resolved by binding arbitration, (ii) you are waiving
any and all rights to a jury trial but all court remedies will be available in arbitration, (iii) all disputes shall be resolved
by a neutral arbitrator who shall issue a written opinion, (iv) the arbitration shall provide for adequate discovery, and
(v) the Company shall pay all the arbitration fees, except an amount equal to the filing fees you would have paid had you
filed a complaint in a court of law.

 

To accept the Company’s
offer, please sign and date this letter in the space provided below. This letter, along with any agreements relating to proprietary
rights between you and the Company, set forth the terms of your employment with the Company and supersede any prior representations
or agreements including, but not limited to, any representations made during your recruitment, interviews or pre-employment negotiations,
whether written or oral. This letter may not be modified or amended except by a written agreement signed by the Chairman of the
Company’s Board of Directors and you.

 

    	 

    	 

    

 

We look forward to
your favorable reply and to continue working with you at Amarantus Bioscience Holdings, Inc.

 

Sincerely,

 

	 	/s/ Gerald Commissiong
	 	Mr. Gerald E. Commissiong
	 	 
	 	President and CEO

 

 

	Agreed to and accepted:	 
	 	 	 
	Signature:	/s/ Dr. John Commissiong	 
	 	 	 
	Printed Name:  	   Dr. John Commissiong	 
	 	 	 
	Date:	December 31, 2014	 

 

    	 

    

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

    	 

    	 

    

Exhibit A

 

 

 

	MILESTONES	% OF PERFORMANCE BONUS	COMPLETION TIMING
	Establish a functional research laboratory	5	12-31-14
	Initiate two academic collaborations	10	04-30-15
	Complete updating of the Cell Bank	20	06-30-15
	Establish proteomics collaboration with Applied Bionics, Hayward, CA	5	03-31-15
	Discovery of one new neurotrophic factor	60	12-31-15
	TOTAL	100%Exhibit 4.3

FRANKLIN STREET PROPERTIES CORP.

and

_______________

Trustee

INDENTURE

Dated as of _______________

SENIOR DEBT SECURITIES

    	 

    	 

    

CROSS-REFERENCE TABLE(1)

 

	
        Section of

        Trust Indenture Act

        of 1939, as amended
	 	
        Section of

        Indenture

	310(a)	6.09
	310(b)	6.08
	 	6.10
	310(c)	Inapplicable
	311(a)	6.13
	311(b)	6.13
	311(c)	Inapplicable
	312(a)	4.01

4.04
	312(b)	4.04(c)
	312(c)	4.04(c)
	313(a)	4.03
	313(b)	4.03
	313(c)	4.03
	313(d)	4.03
	314(a)	4.02
	314(b)	Inapplicable
	314(c)	2.04

8.04

9.01(c)

10.01(b)

11.05
	314(d)	Inapplicable
	314(e)	11.05
	314(f)	Inapplicable
	315(a)	6.01

6.02
	315(b)	5.11
	315(c)	6.01
	315(d)	6.01
	 	6.02
	315(e)	5.12
	316(a)	5.09

5.10
	 	7.04
	316(b)	5.06

5.10
	316(c)	7.02
	317(a)	5.04
	317(b)	3.04
	318(a)	11.07

			

(1)This Cross-Reference Table does not constitute part
of the Indenture and shall not have any bearing on the interpretation of any of its terms or provisions.

    	 

    	 

    

TABLE OF CONTENTS

 

	 	 	 	PAGE
	ARTICLE 1     DEFINITIONS	1
	 	Section 1.01	Certain Terms Defined	1
	 	 	 	 
	ARTICLE 2     SECURITIES	5
	 	Section 2.01	Forms Generally	5
	 	Section 2.02	Form of Trustee’s Certificate of Authentication	6
	 	Section 2.03	Amount Unlimited; Issuable in Series	6
	 	Section 2.04	Authentication and Delivery of Securities	8
	 	Section 2.05	Execution of Securities	10
	 	Section 2.06	Certificate of Authentication	10
	 	Section 2.07	Denomination and Date of Securities; Payments of Interest	10
	 	Section 2.08	Registration, Transfer and Exchange	11
	 	Section 2.09	Mutilated, Defaced, Destroyed, Lost and Stolen Securities	13
	 	Section 2.10	Cancellation of Securities; Destruction Thereof	14
	 	Section 2.11	Temporary Securities	14
	 	 	 	 
	ARTICLE 3     COVENANTS OF THE ISSUER	15
	 	Section 3.01	Payment of Principal and Interest	15
	 	Section 3.02	Offices for Payments, Etc	15
	 	Section 3.03	Appointment to Fill a Vacancy in Office of Trustee	15
	 	Section 3.04	Paying Agents	16
	 	Section 3.05	Written Statement to Trustee	16
	 	 	 	 
	ARTICLE 4     SECURITYHOLDERS LISTS AND REPORTS BY THE ISSUER AND THE TRUSTEE	17
	 	Section 4.01	Issuer to Furnish Trustee Information as to Names and Addresses of Securityholders	17
	 	Section 4.02	Reports by the Issuer	17
	 	Section 4.03	Reports by the Trustee	17
	 	Section 4.04	Preservation of Information; Communication with Securityholders	17
	 	 	 	 
	ARTICLE 5     REMEDIES OF THE TRUSTEE AND SECURITYHOLDERS ON EVENT OF DEFAULT	18
	 	Section 5.01	Event of Default Defined; Acceleration of Maturity; Waiver of Default	18
	 	Section 5.02	Collection of Debt by Trustee; Trustee May Prove Debt	20
	 	Section 5.03	Application of Proceeds	21
	 	Section 5.04	Suits for Enforcement	22
	 	Section 5.05	Restoration of Rights on Abandonment of Proceedings	22
	 	Section 5.06	Limitations on Suits by Securityholders	23
	 	Section 5.07	Unconditional Right of Securityholders to Institute Certain Suits	23

 

    	i

    	 

    

 

	 	Section 5.08	Powers and Remedies Cumulative; Delay or Omission Not Waiver of Default	23
	 	Section 5.09	Control by Holders of Securities	24
	 	Section 5.10	Waiver of Past Defaults	24
	 	Section 5.11	Trustee to Give Notice of Default	25
	 	Section 5.12	Right of Court to Require Filing of Undertaking to Pay Costs	25
	 	 	 	 
	ARTICLE 6     CONCERNING THE TRUSTEE	25
	 	Section 6.01	Duties and Responsibilities of the Trustee; During Default; Prior to Default	25
	 	Section 6.02	Certain Rights of the Trustee	26
	 	Section 6.03	Trustee Not Responsible for Recitals, Disposition of Securities or Application of Proceeds Thereof	27
	 	Section 6.04	Trustee and Agents May Hold Securities; Collections, Etc	27
	 	Section 6.05	Moneys Held by Trustee	27
	 	Section 6.06	Compensation and Indemnification of Trustee and Its Prior Claim	28
	 	Section 6.07	Right of Trustee to Rely on Officer’s Certificate, Etc	28
	 	Section 6.08	Disqualification; Conflicting Interests	28
	 	Section 6.09	Persons Eligible for Appointment as Trustee	28
	 	Section 6.10	Resignation and Removal; Appointment of Successor Trustee	29
	 	Section 6.11	Acceptance of Appointment by Successor Trustee	30
	 	Section 6.12	Merger, Conversion, Consolidation or Succession to Business of Trustee	31
	 	Section 6.13	Preferential Collection of Claims Against the Issuer	31
	 	 	 	 
	ARTICLE 7     CONCERNING THE SECURITYHOLDERS	31
	 	Section 7.01	Evidence of Action Taken by Securityholders	31
	 	Section 7.02	Proof of Execution of Instruments and of Holding of Securities	32
	 	Section 7.03	Holders to Be Treated as Owners	32
	 	Section 7.04	Securities Owned by Issuer Deemed Not Outstanding	32
	 	Section 7.05	Right of Revocation of Action Taken	33
	 	 	 	 
	ARTICLE 8     SUPPLEMENTAL INDENTURES	33
	 	Section 8.01	Supplemental Indentures Without Consent of Securityholders	33
	 	Section 8.02	Supplemental Indentures With Consent of Securityholders	34
	 	Section 8.03	Effect of Supplemental Indenture	36
	 	Section 8.04	Documents to Be Given to Trustee	36
	 	Section 8.05	Notation on Securities in Respect of Supplemental Indentures	36
	 	 	 	 
	ARTICLE 9     CONSOLIDATION, MERGER, SALE OR CONVEYANCE	36
	 	Section 9.01	Issuer May Consolidate, Etc., on Certain Terms	36
	 	Section 9.02	Successor Issuer Substituted	37
	 	 	 	 
	ARTICLE 10     SATISFACTION AND DISCHARGE OF INDENTURE; DEFEASANCE; UNCLAIMED MONEYS	37

    	ii

    	 

    

 

	 	Section 10.01	Satisfaction and Discharge of Indenture; Defeasance	37
	 	Section 10.02	Application by Trustee of Funds Deposited for Payment of Securities	41
	 	Section 10.03	Repayment of Moneys Held by Paying Agent	41
	 	Section 10.04	Return of Moneys Held by Trustee and Paying Agent Unclaimed for Two Years	41
	 	Section 10.05	Indemnity for U.S. Government Obligations	41
	 	 	 	 
	ARTICLE 11     MISCELLANEOUS PROVISIONS	41
	 	Section 11.01	No Recourse	41
	 	Section 11.02	Provisions of Indenture for the Sole Benefit of Parties and Holders of Securities	42
	 	Section 11.03	Successors and Assigns of Issuer Bound by Indenture	42
	 	Section 11.04	Notices and Demands on Issuer, Trustee and Holders of Securities	42
	 	Section 11.05	Officer’s Certificates and Opinions of Counsel; Statements to Be Contained Therein	43
	 	Section 11.06	Payments Due on Saturdays, Sundays and Holidays	44
	 	Section 11.07	Conflict of Any Provision of Indenture With Trust Indenture Act of 1939	44
	 	Section 11.08	New York Law to Govern	44
	 	Section 11.09	Counterparts	44
	 	Section 11.10	Effect of Headings	44
	 	Section 11.11	Actions by Successor	44
	 	Section 11.12	Severability	44
	 	 	 	 
	ARTICLE 12     REDEMPTION OF SECURITIES AND SINKING FUNDS	45
	 	Section 12.01	Applicability of Article	45
	 	Section 12.02	Notice of Redemption; Partial Redemptions	45
	 	Section 12.03	Payment of Securities Called for Redemption	46
	 	Section 12.04	Exclusion of Certain Securities from Eligibility for Selection for Redemption	47
	 	Section 12.05	Mandatory and Optional Sinking Funds	47

 

 

    	iii

    	 

    

THIS INDENTURE, dated as of _________
between Franklin Street Properties Corp., a Maryland corporation (the “Issuer”) and ________, a _______ (the
“Trustee”),

W I T N E S S E T H :

WHEREAS, the Issuer may from time to
time duly authorize the issue of its unsecured debentures, notes or other evidences of indebtedness to be issued in one or more
series (the “Securities”) up to such principal amount or amounts as may from time to time be authorized in accordance
with the terms of this Indenture;

WHEREAS, the Issuer has duly authorized
the execution and delivery of this Indenture to provide, among other things, for the authentication, delivery and administration
of the Securities; and

WHEREAS, all things necessary to make
this Indenture a valid indenture and agreement according to its terms have been done;

NOW, THEREFORE:

In consideration of the premises and
the purchases of the Securities by the holders thereof, the Issuer and the Trustee mutually covenant and agree for the equal and
proportionate benefit of the respective holders from time to time of the Securities as follows:

ARTICLE 1

DEFINITIONS

Section 1.01     Certain
Terms Defined. The following terms (except as otherwise expressly provided or unless the context otherwise clearly requires)
for all purposes of this Indenture and of any indenture supplemental hereto shall have the respective meanings specified in this
Section. All other terms used in this Indenture that are defined in the Trust Indenture Act of 1939 or the definitions of which
in the Securities Act of 1933 are referred to in the Trust Indenture Act of 1939, including terms defined therein by reference
to the Securities Act of 1933 (except as herein otherwise expressly provided or unless the context otherwise clearly requires),
shall have the meanings assigned to such terms in said Trust Indenture Act and in said Securities Act as in force at the date of
this Indenture. All accounting terms used herein and not expressly defined shall have the meanings assigned to such terms in accordance
with generally accepted accounting principles, and the term “generally accepted accounting principles” means
such accounting principles as are generally accepted in the United States at the time of any computation. 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. The terms defined in this Article have the meanings assigned to them in this
Article and include the plural as well as the singular.

“Board of Directors”
means either the Board of Directors of the Issuer or any committee of such Board duly authorized to act on its behalf.

    	 

    	 

    

“Board Resolution”
means a copy of one or more resolutions, certified by the secretary or an assistant secretary of the Issuer to have been duly adopted
by the Board of Directors and to be in full force and effect, and delivered to the Trustee.

“Business Day” means,
with respect to any Security, a day that in the city (or in any of the cities, if more than one) in which amounts are payable,
as specified in the form of such Security, is not a day on which banking institutions are authorized or required by law or regulation
to close.

“Commission” means
the Securities and Exchange Commission, as from time to time constituted, created under the Securities Exchange Act of 1934, or
if at any time after the execution and delivery of this Indenture such Commission is not existing and performing the duties now
assigned to it under the Trust Indenture Act of 1939, then the body performing such duties on such date.

“Common Stock” means
shares of common stock, par value $0.0001 per share, of the Issuer as the same exists at the date of execution and delivery of
this Indenture or as such stock may be reconstituted from time to time.

“Corporate Trust Office”
means the office of the Trustee at which the corporate trust business of the Trustee shall, at any particular time, be principally
administered, which office is, at the date as of which this Indenture is dated, located at __________.

“Debt” of any Person
means any debt for money borrowed which is created, assumed, incurred or guaranteed in any manner by such Person or for which such
Person is otherwise responsible or liable, and shall expressly include any such guaranty thereof by such Person. For the purpose
of computing the amount of the Debt of any Person there shall be excluded all Debt of such Person for the payment or redemption
or satisfaction of which money or securities (or evidences of such Debt, if permitted under the terms of the instrument creating
such Debt) in the necessary amount shall have been deposited in trust with the proper depositary, whether upon or prior to the
maturity or the date fixed for redemption of such Debt; and, in any instance where Debt is so excluded, for the purpose of computing
the assets of such Person there shall be excluded the money, securities or evidences of Debt deposited by such Person in trust
for the purpose of paying or satisfying such Debt.

“Depositary” means,
with respect to the Securities of any series issuable or issued in the form of one or more Global Securities, the Person designated
as Depositary by the Issuer pursuant to Section 2.04 until a successor Depositary shall have become such pursuant to the applicable
provisions of this Indenture, and thereafter “Depositary” shall mean or include each Person who is then a Depositary
hereunder, and if at any time there is more than one such Person, “Depositary” as used with respect to the Securities
of any such series shall mean the Depositary with respect to the Global Securities of that series.

“Dollar” means the
currency of the United States of America as at the time of payment is legal tender for the payment of public and private debts.

“Event of Default”
means any event or condition specified as such in Section 5.01.

    	2

    	 

    

“Foreign Currency”
means a currency issued by the government of a country other than the United States.

“Global Security”
means a Security evidencing all or a part of a series of Securities, issued to the Depositary for such series in accordance with
Section 2.04, and bearing the legend prescribed in Section 2.04.

“Holder”, “holder”,
“holder of Securities”, “Securityholder” or other similar terms mean the Person in whose
name such Security is registered in the Security register kept by the Issuer for that purpose in accordance with the terms hereof.

“Indenture” means
this instrument as originally executed and delivered or, if amended or supplemented as herein provided, as so amended or supplemented
or both, and shall include the forms and terms of particular series of Securities established as contemplated hereunder.

“interest”, unless
the context otherwise requires, refers to interest, and when used with respect to non-interest bearing Securities, refers to interest
payable after maturity, if any.

“Issuer” means Franklin
Street Properties Corp., a Delaware corporation, and, subject to Article 9, its successors and assigns.

“Issuer Order” means
a written statement, request or order of the Issuer signed in its name by the chairman of the Board of Directors, the president
or any vice president of the Issuer.

“Notice of Default”
shall have the meaning set forth in Section 5.01(c).

“Officer’s Certificate”
means a certificate signed by the chairman of the Board of Directors, the president, any vice president, the treasurer, the secretary
or any assistant secretary of the Issuer and delivered to the Trustee. Each such certificate shall comply with Section 314 of the
Trust Indenture Act of 1939 and, except to the extent provided herein, shall include the statements provided for in Section 11.05.

“Opinion of Counsel”
means an opinion in writing signed by the general corporate counsel or such other legal counsel who may be an employee of or counsel
to the Issuer and who shall be satisfactory to the Trustee. Each such opinion shall comply with Section 314 of the Trust Indenture
Act of 1939 and shall include the statements provided for in Section 11.05, if and to the extent required hereby.

“original issue date”
of any Security (or portion thereof) means the earlier of (a) the date of such Security or (b) the date of any Security (or portion
thereof) for which such Security was issued (directly or indirectly) on registration of transfer, exchange or substitution.

“Original Issue Discount Security”
means any Security that provides for an amount less than the principal amount thereof to be due and payable upon a declaration
of acceleration of the maturity thereof pursuant to Section 5.01.

    	3

    	 

    

“Outstanding”, when
used with reference to Securities, shall, subject to the provisions of Section 7.04, mean, as of any particular time, all Securities
authenticated and delivered by the Trustee under this Indenture, except

(a) Securities theretofore cancelled
by the Trustee or delivered to the Trustee for cancellation;

(b) Securities, or portions
thereof, for the payment or redemption of which cash or U.S. Government Obligations (as provided for in Section 10.01 (a) and Section
10.01(b)) in the necessary amount shall have been deposited in trust with the Trustee or with any paying agent (other than the
Issuer) or shall have been set aside, segregated and held in trust by the Issuer for the Holders of such Securities (if the Issuer
shall act as its own paying agent); provided, that if such Securities, or portions thereof, are to be redeemed prior to
the maturity thereof, notice of such redemption shall have been given as herein provided, or provision satisfactory to the Trustee
shall have been made for giving such notice; and

(c) Securities in substitution
for which other Securities shall have been authenticated and delivered, or which shall have been paid, pursuant to the terms of
Section 2.09 (except with respect to any such Security as to which proof satisfactory to the Trustee is presented that such Security
is held by a Person in whose hands such Security is a legal, valid and binding obligation of the Issuer), Securities converted
into Common Stock pursuant hereto and Securities not deemed outstanding pursuant to Section 12.02.

In determining whether the Holders of
the requisite principal amount of Outstanding Securities of any or all series have given any request, demand, authorization, direction,
notice, consent or waiver hereunder, the principal amount of an Original Issue Discount Security that shall be deemed to be Outstanding
for such purposes shall be the amount of the principal thereof that would be due and payable as of the date of such determination
upon a declaration of acceleration of the maturity thereof pursuant to Section 5.01.

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

“principal” whenever
used with reference to the Securities or any Security or any portion thereof, shall be deemed to include “and premium, if
any”.

“record date” shall
have the meaning set forth in Section 2.07.

“Responsible Officer”,
when used with respect to the Trustee, means the chairman of the board of directors, any vice chairman of the board of directors,
the chairman of the trust committee, the chairman of the executive committee, any vice chairman of the executive committee, the
president, any vice president, the cashier, the secretary, the treasurer, any trust officer, any assistant trust officer, any assistant
vice president, any assistant cashier, any assistant secretary, any assistant treasurer, or any other officer or assistant officer
of the Trustee customarily performing functions similar to those performed by the persons who at the time shall be such officers,
respectively, or to whom any corporate trust matter is referred because of his or her knowledge of and familiarity with the particular
subject.

    	4

    	 

    

“Security” or “Securities”
has the meaning stated in the first recital of this Indenture, or, as the case may be, Securities that have been authenticated
and delivered under this Indenture.

“Security Registrar”
shall have the meaning set forth in Section 4.01(b).

“Subsidiary” means
a corporation of which stock having a majority of the voting power under ordinary circumstances is owned, directly or indirectly,
by the Issuer or by one or more subsidiaries of the Issuer, or by the Issuer and one or more subsidiaries of the Issuer.

“Trust Indenture Act of 1939”
(except as otherwise provided in Sections 8.01 and 8.02) means the Trust Indenture Act of 1939 as in force at the date as of which
this Indenture was originally executed.

“Trustee” means the
Person identified as “Trustee” in the first paragraph hereof and, subject to the provisions of Article 6, shall
also include any successor trustee. “Trustee” shall also mean or include each Person who is then a trustee hereunder
and if at any time there is more than one such Person, “Trustee” as used with respect to the Securities of any
series shall mean the trustee with respect to the Securities of such series.

“U.S. Government Obligation”
means (a) a direct obligation of the United States of America, backed by its full faith and credit, or (b) an obligation of a Person
controlled or supervised by and acting as an agency or instrumentality of the United States of America, the payment of which is
unconditionally guaranteed as a full faith and credit obligation by the United States of America.

“vice president”,
when used with respect to the Issuer or the Trustee, means any vice president, whether or not designated by a number or a word
or words added before or after the title of “vice president”.

“Yield to Maturity”
means the yield to maturity on a series of securities, calculated at the time of issuance of such series, or, if applicable, at
the most recent redetermination of interest on such series, and calculated in accordance with accepted financial practice.

ARTICLE 2

SECURITIES

Section 2.01     Forms Generally.
The Securities of each series shall be substantially in such form (not inconsistent with this Indenture) as shall be established
by or pursuant to one or more Board Resolutions (as set forth in a Board Resolution or, to the extent established pursuant to (rather
than set forth in) a Board Resolution, an Officer’s Certificate detailing such establishment) or in one or more indentures
supplemental hereto, in each case with such appropriate insertions, omissions, substitutions and other variations as are required
or permitted by this Indenture and may have imprinted or otherwise reproduced thereon such legend or legends or endorsements, not
inconsistent with the provisions of this Indenture, as may be required to comply with any law or with any rules or regulations
pursuant thereto, or with any rules of any securities exchange or to conform to general usage, all as may be determined by the
officers executing such Securities as evidenced by their execution of such Securities.

    	5

    	 

    

The definitive Securities shall be printed,
lithographed or engraved on steel engraved borders or may be produced in any other manner, all as determined by the officers executing
such Securities as evidenced by their execution of such Securities.

Section 2.02     Form of Trustee’s
Certificate of Authentication. The Trustee’s certificate of authentication on all Securities shall be in substantially
the following form:

This is one of the Securities of the
series designated herein and referred to in the within-mentioned Indenture.

	 
	as Trustee
	 	 
	By:	 
	 	Authorized Officer

 

Section 2.03     Amount Unlimited;
Issuable in Series. The aggregate principal amount of Securities which may be authenticated and delivered under this Indenture
is unlimited.

The Securities may be issued in one or
more series. The terms of a series of Securities shall be established prior to the initial issuance thereof in or pursuant to one
or more Board Resolutions, or, to the extent established pursuant to (rather than set forth in) a Board Resolution, in an Officer’s
Certificate detailing such establishment and/or established in one or more indentures supplemental hereto. The terms of such series
reflected in such Board Resolution, Officer’s Certificate, or supplemental indenture may include the following or any additional
or different terms:

(a) the designation of the Securities
of the series (which may be part of a series of Securities previously issued);

(b) the terms and conditions, if
applicable, upon which conversion or exchange of the Securities into Common Stock will be effected, including the initial conversion
or exchange price or rate and any adjustments thereto, the conversion or exchange period and other provisions in addition to or
in lieu of those described herein;

(c) any limit upon the aggregate
principal amount of the Securities of the series that may be authenticated and delivered under this Indenture (except for Securities
authenticated and delivered upon registration of transfer of, or in exchange for, or in lieu of, other Securities of the series
pursuant to Section 2.08, 2.09, 2.11, 8.05 or 12.03);

(d) if other than Dollars, the
Foreign Currency in which the Securities of that series are denominated;

(e) any date on which the principal
of the Securities of the series is payable and the right, if any, to extend such date or dates;

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(f) the rate or rates at which
the Securities of the series shall bear interest, if any, the record date or dates for the determination of holders to whom interest
is payable, the date or dates from which such interest shall accrue and on which such interest shall be payable and/or the method
by which such rate or rates or date or dates shall be determined, and the right, if any, to extend the interest payment periods
and the duration of that extension;

(g) the place or places where the
principal of and any interest on Securities of the series shall be payable (if other than as provided in Section 3.02);

(h) the price or prices at which,
the period or periods within which and the terms and conditions upon which Securities of the series may be redeemed, in whole or
in part, at the option of the Issuer, pursuant to any sinking fund or otherwise;

(i) the obligation, if any, of
the Issuer to redeem, purchase or repay Securities of the series pursuant to any mandatory redemption, sinking fund or analogous
provisions or at the option of a Holder thereof and the price or prices at which and the period or periods within which and any
terms and conditions upon which Securities of the series shall be redeemed, purchased or repaid, in whole or in part, pursuant
to such obligation;

(j) if other than denominations
of $1,000 and any integral multiple thereof, the denominations in which Securities of the series shall be issuable;

(k) if other than the principal
amount thereof, the portion of the principal amount of Securities of the series which shall be payable upon declaration of acceleration
of the maturity thereof;

(l) if other than the currency
in which the Securities of that series are denominated, the currency in which payment of the principal of or interest on the Securities
of such series shall be payable;

(m) if the principal of or interest
on the Securities of the series is to be payable, at the election of the Issuer or a Holder thereof, in a currency other than that
in which the Securities are denominated, the period or periods within which, and the terms and conditions upon which, such election
may be made;

(n) if the amount of payments of
principal of and interest on the Securities of the series may be determined with reference to an index based on a currency other
than that in which the Securities of the series are denominated, or by reference to one or more currency exchange rates, securities
or baskets of securities, commodity prices or indices, the manner in which such amounts shall be determined;

(o) if Sections 10.01(b) or 10.01(c)
are inapplicable to Securities of such series;

(p) whether and under what circumstances
the Issuer will pay additional amounts on the Securities of any series in respect of any tax, assessment or governmental charge
withheld or deducted and, if so, whether the Issuer will have the option to redeem such Securities rather than pay such additional
amounts;

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(q) if the Securities of such series
are to be issuable in definitive form (whether upon original issue or upon exchange of a temporary Security of such series) only
upon receipt of certain certificates or other documents or satisfaction of other conditions, then the form and terms of such certificates,
documents or conditions;

(r) any trustees, authenticating
or paying agents, transfer agents or registrars or any other agents with respect to the Securities of such series;

(s) any other events of default
or covenants with respect to the Securities of such series in addition to or in lieu of those contained in this Indenture;

(t) if the Securities of the series
may be issued in exchange for surrendered Securities of another series, or for other securities of the Issuer, pursuant to the
terms of such Securities or securities or of any agreement entered into by the Issuer, the ratio of the principal amount of the
Securities of the series to be issued to the principal amount of the Securities or securities to be surrendered in exchange, and
any other material terms of the exchange; and

(u) any other terms of the series.

The Issuer may from time to time, without
notice to or the consent of the holders of any series of Securities, create and issue further Securities of any such series ranking
equally with the Securities of such series in all respects (or in all respects other than (1) the payment of interest accruing
prior to the issue date of such further Securities or (2) the first payment of interest following the issue date of such further
Securities). Such further Securities may be consolidated and form a single series with the Securities of such series and have the
same terms as to status, redemption or otherwise as the Securities of such series.

Section 2.04 Authentication
and Delivery of Securities. The Issuer may deliver Securities of any series executed by the Issuer to the Trustee for authentication
together with the applicable documents referred to below in this Section, and the Trustee shall thereupon authenticate and deliver
such Securities to or upon the order of the Issuer (contained in the Issuer Order referred to below in this Section) or pursuant
to such procedures acceptable to the Trustee and to such recipients as may be specified from time to time by an Issuer Order. The
maturity date, original issue date, interest rate and any other terms of the Securities of such series shall be determined by or
pursuant to such Issuer Order and procedures. If provided for in such procedures, such Issuer Order may authorize authentication
and delivery pursuant to oral instructions from the Issuer or its duly authorized agent, which instructions shall be promptly confirmed
in writing. In authenticating such Securities and accepting the additional responsibilities under this Indenture in relation to
such Securities, the Trustee shall be entitled to receive, and (subject to Section 6.01) shall be fully protected in relying upon:

(a) an Issuer Order requesting
such authentication and setting forth delivery instructions if the Securities are not to be delivered to the Issuer;

(b) any Board Resolution, Officer’s
Certificate and/or executed supplemental indenture referred to in Sections 2.01 and 2.03 by or pursuant to which the forms and
terms of the Securities were established;

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(c) an Officer’s Certificate
setting forth the form or forms and terms of the Securities stating that the form or forms and terms of the Securities have been
established pursuant to Sections 2.01 and 2.03 and comply with this Indenture, and covering such other matters as the Trustee may
reasonably request; and

(d) an Opinion of Counsel to the
effect that:

(i) the form or forms and terms of
such Securities have been established pursuant to Sections 2.01 and 2.03 and comply with this Indenture,

(ii) the authentication and delivery
of such Securities by the Trustee are authorized under the provisions of this Indenture,

(iii) such Securities when authenticated
and delivered by the Trustee and issued by the Issuer in the manner and subject to any conditions specified in such Opinion of
Counsel, will constitute valid and binding obligations of the Issuer, and

(iv) all laws and requirements in
respect of the execution and delivery by the Issuer of the Securities have been complied with,

and covering such other matters as the Trustee may reasonably
request.

The Trustee shall have the right to decline
to authenticate and deliver any Securities under this Section if the Trustee, being advised by counsel, determines that such action
may not lawfully be taken by the Issuer or if the Trustee in good faith by its board of directors or board of trustees, executive
committee, or a trust committee of directors or trustees or Responsible Officers shall determine that such action would expose
the Trustee to personal liability to existing Holders or would affect the Trustee’s own rights, duties or immunities under
the Securities, this Indenture or otherwise.

The Issuer shall execute and the Trustee
shall, in accordance with this Section with respect to the Securities of a series, authenticate and deliver one or more Global
Securities that (i) shall represent and shall be denominated in an amount equal to the aggregate principal amount of all of the
Securities of such series issued and not yet cancelled, (ii) shall be registered in the name of the Depositary for such Global
Security or Securities or the nominee of such Depositary, (iii) shall be delivered by the Trustee to such Depositary or pursuant
to such Depositary’s instructions and (iv) shall bear a legend substantially to the following effect: “Unless and until
it is exchanged in whole or in part for Securities in definitive registered form, this Security may not be transferred except as
a whole by the Depositary to the nominee of the Depositary or by a nominee of the Depositary to the Depositary or another nominee
of the Depositary or by the Depositary or any such nominee to a successor Depositary or a nominee of such successor Depositary.”

Each Depositary designated pursuant to
this Section must, at the time of its designation and at all times while it serves as Depositary, be a clearing agency registered
under the Securities Exchange Act of 1934 and any other applicable statute or regulation.

    	9

    	 

    

Section 2.05 Execution of Securities.
The Securities shall be signed on behalf of the Issuer by the chairman of its Board of Directors, any vice chairman of its Board
of Directors, its chief executive officer, its principal financial officer, its president, any vice president or its treasurer.
Such signatures may be the manual or facsimile signatures of the present or any future such officers. Typographical and other minor
errors or defects in any such reproduction of any such signature shall not affect the validity or enforceability of any Security
that has been duly authenticated and delivered by the Trustee.

In case any officer of the Issuer who
shall have signed any of the Securities shall cease to be such officer before the Security so signed shall be authenticated and
delivered by the Trustee or disposed of by the Issuer, such Security nevertheless may be authenticated and delivered or disposed
of as though the person who signed such Security had not ceased to be such officer of the Issuer; and any Security may be signed
on behalf of the Issuer by such persons as, at the actual date of the execution of such Security, shall be the proper officers
of the Issuer, although at the date of the execution and delivery of this Indenture any such person was not such an officer.

Section 2.06 Certificate of
Authentication. Only such Securities as shall bear thereon a certificate of authentication substantially in the form hereinbefore
recited, executed by the Trustee by the manual signature of one of its authorized officers, shall be entitled to the benefits of
this Indenture or be valid or obligatory for any purpose. The execution of such certificate by the Trustee upon any Security executed
by the Issuer shall be conclusive evidence that the Security so authenticated has been duly authenticated and delivered hereunder
and that the Holder is entitled to the benefits of this Indenture.

Section 2.07 Denomination and
Date of Securities; Payments of Interest. The Securities of each series shall be issuable in denominations established as contemplated
by Section 2.03 or, if not so established, in denominations of $1,000 and any integral multiple thereof. The Securities of each
series shall be numbered, lettered or otherwise distinguished in such manner or in accordance with such plan as the officers of
the Issuer executing the same may determine with the approval of the Trustee, as evidenced by the execution and authentication
thereof. Unless otherwise indicated in a Board Resolution, Officer’s Certificate or supplemental indenture for a particular
series, interest will be calculated on the basis of a 360-day year of twelve 30-day months.

Each Security shall be dated the date
of its authentication. The Securities of each series shall bear interest, if any, from the date, and such interest shall be payable
on the dates, established as contemplated by Section 2.03.

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The Person in whose name any Security
of any series is registered at the close of business on any record date applicable to a particular series with respect to any interest
payment date for such series shall be entitled to receive the interest, if any, payable on such interest payment date notwithstanding
any transfer, exchange or conversion of such Security subsequent to the record date and prior to such interest payment date, except
if and to the extent the Issuer shall default in the payment of the interest due on such interest payment date for such series,
in which case such defaulted interest shall be paid to the Persons in whose names Outstanding Securities for such series are registered
at the close of business on a subsequent record date (which shall be not less than five Business Days prior to the date of payment
of such defaulted interest) established by notice given by mail by or on behalf of the Issuer to the Holders of Securities not
less than 15 days preceding such subsequent record date. The term “record date” as used with respect to any
interest payment date (except a date for payment of defaulted interest) for the Securities of any series shall mean the date specified
as such in the terms of the Securities of such series established as contemplated by Section 2.03, or, if no such date is so established,
if such interest payment date is the first day of a calendar month, the 15th day of the immediately preceding calendar month or,
if such interest payment date is the 15th day of a calendar month, the first day of such calendar month, whether or not such record
date is a Business Day.

Section 2.08 Registration,
Transfer and Exchange. The Issuer will keep at each office or agency to be maintained for the purpose as provided in Section
3.02 for each series of Securities a register or registers in which, subject to such reasonable regulations as it may prescribe,
it will provide for the registration of Securities of such series and the registration of transfer of Securities of such series.
Such register shall be in written form in the English language or in any other form capable of being converted into such form within
a reasonable time. At all reasonable times such register or registers shall be open for inspection by the Trustee.

Upon due presentation for registration
of transfer of any Security of any series at any such office or agency to be maintained for the purpose as provided in Section
3.02, the Issuer shall execute and the Trustee shall authenticate and deliver in the name of the transferee or transferees a new
Security or Securities of the same series, maturity date, interest rate and original issue date in authorized denominations for
a like aggregate principal amount.

At the option of the Holder thereof,
Securities of any series (except a Global Security) may be exchanged for a Security or Securities of such series having authorized
denominations and an equal aggregate principal amount, upon surrender of such Securities to be exchanged at the agency of the Issuer
that shall be maintained for such purpose in accordance with Section 3.02 and upon payment, if the Issuer shall so require, of
the charges hereinafter provided. Whenever any Securities are so surrendered for exchange, the Issuer shall execute, and the Trustee
shall authenticate and deliver, the Securities which the Holder making the exchange is entitled to receive. All Securities surrendered
upon any exchange or transfer provided for in this Indenture shall be promptly cancelled and disposed of by the Trustee and the
Trustee will deliver a certificate of disposition thereof to the Issuer.

All Securities presented for registration
of transfer, exchange, redemption or payment shall (if so required by the Issuer or the Trustee) be duly endorsed by, or be accompanied
by a written instrument or instruments of transfer in form satisfactory to the Issuer and the Trustee duly executed by, the Holder
or his or her attorney duly authorized in writing.

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The Issuer may require payment of a sum
sufficient to cover any stamp or other tax or other governmental charge that may be imposed in connection with any exchange or
registration of transfer of Securities. No service charge shall be made for any such transaction.

The Issuer shall not be required to exchange
or register a transfer of (a) any Securities of any series for a period of 15 days immediately preceding the first mailing of notice
of redemption of Securities of such series to be redeemed or (b) any Securities selected, called or being called for redemption,
in whole or in part, except, in the case of any Security to be redeemed in part, the portion thereof not so to be redeemed.

Notwithstanding any other provision of
this Section 2.08, unless and until it is exchanged in whole or in part for Securities in definitive registered form, a Global
Security representing all or a portion of the Securities of a series may not be transferred except as a whole by the Depositary
for such series to a nominee of such Depositary or by a nominee of such Depositary to such Depositary or another nominee of such
Depositary or by such Depositary or any such nominee to a successor Depositary for such series or a nominee of such successor Depositary.

If at any time the Depositary for the
Securities of a series notifies the Issuer that it is unwilling or unable to continue as Depositary for the Securities of such
series or if at any time the Depositary for the Securities of a series shall no longer be eligible under Section 2.04, the Issuer
shall appoint a successor Depositary with respect to the Securities of such series. If a successor Depositary for the Securities
of such series is not appointed by the Issuer within 90 days after the Issuer receives such notice or becomes aware of such ineligibility,
the Issuer’s determination pursuant to Section 2.03 that the Securities of such series be represented by a Global Security
shall no longer be effective and the Issuer will execute, and the Trustee, upon receipt of an Officer’s Certificate for the
authentication and delivery of definitive Securities of such series, will authenticate and deliver, Securities of such series in
definitive registered form, in any authorized denominations, in an aggregate principal amount equal to the principal amount of
the Global Security or Securities representing the Securities of such series, in exchange for such Global Security or Securities.

The Issuer may at any time and in its
sole discretion determine that the Securities of any series issued in the form of one or more Global Securities shall no longer
be represented by a Global Security or Securities. In such event the Issuer will execute, and the Trustee, upon receipt of an Officer’s
Certificate for the authentication and delivery of definitive Securities of such series, will authenticate and deliver, Securities
of such series in definitive registered form, in any authorized denominations, in an aggregate principal amount equal to the principal
amount of the Global Security or Securities representing such series, in exchange for such Global Security or Securities.

The Depositary for such Global Security
may surrender such Global Security in exchange in whole or in part for Securities of the same series in definitive registered form
in accordance with the two preceding paragraphs or on such other terms as are acceptable to the Issuer and such Depositary. Thereupon,
the Issuer shall execute, and the Trustee shall authenticate and deliver, without service charge,

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(i)      to
the Person specified by such Depositary a new Security or Securities of the same series, of any authorized denominations as requested
by such Person, in an aggregate principal amount equal to and in exchange for such Person’s beneficial interest in the Global
Security; and

(ii)      to
such Depositary a new Global Security in a denomination equal to the difference, if any, between the principal amount of the surrendered
Global Security and the aggregate principal amount of Securities authenticated and delivered pursuant to clause (i) above.

Upon the exchange of a Global Security
for Securities in definitive registered form, in authorized denominations, such Global Security shall be cancelled by the Trustee.
Securities in definitive registered form issued in exchange for a Global Security pursuant to this Section 2.08 shall be registered
in such names and in such authorized denominations as the Depositary for such Global Security, pursuant to instructions from its
direct or indirect participants or otherwise, shall instruct the Trustee. The Trustee shall deliver such Securities to or as directed
by the Persons in whose names such Securities are so registered.

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

Section 2.09Mutilated,
Defaced, Destroyed, Lost and Stolen Securities. In case any temporary or definitive Security shall become mutilated, defaced
or be destroyed, lost or stolen, the Issuer in its discretion may execute, and upon the written request of any officer of the Issuer,
the Trustee shall authenticate and deliver a new Security of the same series, maturity date, interest rate and original issue date,
bearing a number or other distinguishing symbol not contemporaneously outstanding, in exchange and substitution for the mutilated
or defaced Security, or in lieu of and substitution for the Security so destroyed, lost or stolen. In every case the applicant
for a substitute Security shall furnish to the Issuer and to the Trustee and any agent of the Issuer or the Trustee such security
or indemnity as may be required by them to indemnify and defend and to save each of them harmless and, in every case of destruction,
loss or theft, evidence to their satisfaction of the destruction, loss or theft of such Security and of the ownership thereof and
in the case of mutilation or defacement shall surrender the Security to the Trustee.

Upon the issuance of any substitute Security,
the Issuer may require the payment 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. In case any Security which
has matured or is about to mature or has been called for redemption in full, or is being surrendered for conversion in full, shall
become mutilated or defaced or be destroyed, lost or stolen, the Issuer may, instead of issuing a substitute Security (with the
Holder’s consent, in the case of convertible Securities), pay or authorize the payment of the same or convert, or authorize
conversion of the same (without surrender thereof except in the case of a mutilated or defaced Security), if the applicant for
such payment shall furnish to the Issuer and to the Trustee and any agent of the Issuer or the Trustee such security or indemnity
as any of them may require to save each of them harmless, and, in every case of destruction, loss or theft, the applicant shall
also furnish to the Issuer and the Trustee and any agent of the Issuer or the Trustee evidence to their satisfaction of the destruction,
loss or theft of such Security and of the ownership thereof.

    	13

    	 

    

Every substitute Security of any series
issued pursuant to the provisions of this Section by virtue of the fact that any such Security is destroyed, lost or stolen shall
constitute an additional contractual obligation of the Issuer, whether or not the destroyed, lost or stolen Security shall be at
any time enforceable by anyone and shall be entitled to all the benefits of (but shall be subject to all the limitations of rights
set forth in) this Indenture equally and proportionately with any and all other Securities of such series duly authenticated and
delivered hereunder. All Securities shall be held and owned upon the express condition that, to the extent permitted by law, the
foregoing provisions are exclusive with respect to the replacement or payment or conversion of mutilated, defaced or destroyed,
lost or stolen Securities and shall preclude any and all other rights or remedies notwithstanding any law or statute existing or
hereafter enacted to the contrary with respect to the replacement or payment of negotiable instruments or other securities without
their surrender.

Section 2.10Cancellation
of Securities; Destruction Thereof. All Securities surrendered for exchange for Securities of the same series or for payment,
redemption, registration of transfer, conversion or for credit against any payment in respect of a sinking or analogous fund, if
surrendered to the Issuer or any agent of the Issuer or the Trustee, shall be delivered to the Trustee for cancellation or, if
surrendered to the Trustee, shall be cancelled by it; and no Securities shall be issued in lieu thereof except as expressly permitted
by any of the provisions of this Indenture. The Trustee shall dispose of cancelled Securities held by it and deliver a certificate
of disposition to the Issuer. If the Issuer shall acquire any of the Securities, such acquisition shall not operate as a redemption
or satisfaction of the Debt represented by such Securities unless and until the same are delivered to the Trustee for cancellation.

Section 2.11Temporary Securities.
Pending the preparation of definitive Securities for any series, the Issuer may execute and the Trustee shall authenticate
and deliver temporary Securities for such series (printed, lithographed, typewritten or otherwise reproduced, in each case in form
satisfactory to the Trustee). Temporary Securities of any series shall be issuable in any authorized denomination, and substantially
in the form of the definitive Securities of such series but with such omissions, insertions and variations as may be appropriate
for temporary Securities, all as may be determined by the Issuer with the concurrence of the Trustee as evidenced by the execution
and authentication thereof. Temporary Securities may contain such reference to any provisions of this Indenture as may be appropriate.
Every temporary Security shall be executed by the Issuer and be authenticated by the Trustee upon the same conditions and in substantially
the same manner, and with like effect, as the definitive Securities. Without unreasonable delay the Issuer shall execute and shall
furnish definitive Securities of such series and thereupon temporary Securities of such series may be surrendered in exchange therefor
without charge at each office or agency to be maintained by the Issuer for that purpose pursuant to Section 3.02 and the Trustee
shall authenticate and deliver in exchange for such temporary Securities of such series an equal aggregate principal amount of
definitive Securities of the same series having authorized denominations. Until so exchanged, the temporary Securities of any series
shall be entitled to the same benefits under this Indenture as definitive Securities of such series, unless the benefits of the
temporary Securities are limited pursuant to Section 2.03.

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ARTICLE 3

COVENANTS OF THE ISSUER

Section 3.01     Payment
of Principal and Interest. The Issuer covenants and agrees for the benefit of each series of Securities that it will duly and
punctually pay or cause to be paid the principal of, and interest on, each of the Securities of such series (together with any
additional amounts payable pursuant to the terms of such Securities) at the place or places, at the respective times and in the
manner provided in such Securities and in this Indenture. The interest on Securities (together with any additional amounts payable
pursuant to the terms of such Securities) shall be payable only to or upon the written order of the Holders thereof and at the
option of the Issuer may be paid by mailing checks for such interest payable to or upon the written order of such Holders at their
last addresses as they appear on the Security register of the Issuer.

Section 3.02     Offices
for Payments, Etc. The Issuer will maintain (i) in _______, an agency where the Securities of each series may be presented
for payment, an agency where the Securities of each series may be presented for exchange and conversion, if applicable, as provided
in this Indenture and an agency where the Securities of each series may be presented for registration of transfer as in this Indenture
provided and (ii) such further agencies in such places as may be determined for the Securities of such series pursuant to Section
2.03.

The Issuer will maintain in __________,
an agency where notices and demands to or upon the Issuer in respect of the Securities of any series or this Indenture may be served.

The Issuer will give to the Trustee written
notice of the location of each such agency and of any change of location thereof. In case the Issuer shall fail to maintain any
agency required by this Section to be located in __________, or shall fail to give such notice of the location or of any change
in the location of any of the above agencies, presentations and demands may be made and notices may be served at the Corporate
Trust Office of the Trustee.

The Issuer may from time to time designate
one or more additional agencies where the Securities of a series may be presented for payment, where the Securities of that series
may be presented for exchange or conversion, if applicable, as provided in this Indenture and pursuant to Section 2.03 and where
the Securities of that series may be presented for registration of transfer as in this Indenture provided, and the Issuer may from
time to time rescind any such designation, as the Issuer may deem desirable or expedient; provided, however, that
no such designation or rescission shall in any manner relieve the Issuer of its obligation to maintain the agencies provided for
in this Section. The Issuer will give to the Trustee prompt written notice of any such designation or rescission thereof.

Section 3.03     Appointment
to Fill a Vacancy in Office of Trustee. The Issuer, whenever necessary to avoid or fill a vacancy in the office of Trustee,
will appoint, in the manner provided in Section 6.10, a Trustee, so that there shall at all times be a Trustee with respect to
each series of Securities hereunder.

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Section 3.04 Paying Agents.
Whenever the Issuer shall appoint a paying agent other than the Trustee with respect to the Securities of any series, it 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,

(a) that it will hold all sums
received by it as such agent for the payment of the principal of or interest on the Securities of such series (whether such sums
have been paid to it by the Issuer or by any other obligor on the Securities of such series) in trust for the benefit of the Holders
of the Securities of such series or of the Trustee,

(b) that it will give the Trustee
notice of any failure by the Issuer (or by any other obligor on the Securities of such series) to make any payment of the principal
of or interest on the Securities of such series when the same shall be due and payable, and

(c) that at any time during the
continuance of any such failure, upon the written request of the Trustee, it will forthwith pay to the Trustee all sums so held
in trust by such paying agent.

The Issuer will, on or prior to each
due date of the principal of or interest on the Securities of such series, deposit with the paying agent a sum sufficient to pay
such principal or interest so becoming due, and (unless such paying agent is the Trustee) the Issuer will promptly notify the Trustee
of any failure to take such action.

If the Issuer shall act as its own paying
agent with respect to the Securities of any series, it will, on or before each due date of the principal of or interest on the
Securities of such series, set aside, segregate and hold in trust for the benefit of the Holders of the Securities of such series
a sum sufficient to pay such principal or interest so becoming due. The Issuer will promptly notify the Trustee of any failure
to take such action.

Anything in this Section to the contrary
notwithstanding, but subject to Section 10.01, the Issuer may at any time, for the purpose of obtaining a satisfaction and discharge
with respect to one or more or all series of Securities hereunder, or for any other reason, pay or cause to be paid to the Trustee
all sums held in trust for any such series by the Issuer or any paying agent hereunder, as required by this Section, such sums
to be held by the Trustee upon the trusts herein contained.

Anything in this Section to the contrary
notwithstanding, the agreement to hold sums in trust as provided in this Section is subject to the provisions of Sections 10.03
and 10.04.

Section 3.05     Written
Statement to Trustee. So long as any Securities are Outstanding hereunder, the Issuer will deliver to the Trustee, within 120
days after the end of each fiscal year of the Issuer ending after the date hereof, a written statement covering the previous fiscal
year, signed by two of its officers (which need not comply with Section 11.05), stating that in the course of the performance of
their duties as officers of the Issuer they would normally have knowledge of any default by the Issuer in the performance or fulfillment
of any covenant, agreement or condition contained in this Indenture, stating whether or not they have knowledge of any such default
and, if so, specifying each such default of which the signers have knowledge and the nature thereof.

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ARTICLE 4

SECURITYHOLDERS LISTS AND REPORTS BY THE ISSUER AND THE TRUSTEE

Section 4.01 Issuer to Furnish
Trustee Information as to Names and Addresses of Securityholders. The Issuer covenants and agrees that it will furnish
or cause to be furnished to the Trustee a list in such form as the Trustee may reasonably require of the names and addresses of
the Holders of the Securities of each series pursuant to Section 312 of the Trust Indenture Act of 1939:

(a) semiannually and not more than
15 days after each record date for the payment of interest on such Securities, as hereinabove specified, as of such record date
and on dates to be determined pursuant to Section 2.03 for non-interest bearing Securities in each year, and

(b) at such other times as the
Trustee may request in writing, within 30 days after receipt by the Issuer of any such request as of a date not more than 15 days
prior to the time such information is furnished, provided, that, if and so long as the Trustee shall be the Security registrar
(the “Security Registrar”) for such series, such list shall not be required to be furnished.

Section 4.02 Reports by the
Issuer. The Issuer covenants to comply with Section 314(a) of the Trust Indenture Act insofar as it relates to information,
documentations, and other reports which the Issuer may be required to file with the Commission pursuant to Section 13 or Section
15(d) of the Securities Exchange Act of 1934.

Section 4.03 Reports by the
Trustee. Any Trustee’s report required under Section 313(a) of the Trust Indenture Act of 1939 shall be transmitted on
or before ______ in each year following the date hereof, so long as any Securities are Outstanding hereunder, and shall be dated
as of a date convenient to the Trustee but no more than 60 nor less than 45 days prior thereto. The Trustee shall comply with Sections
313(b), 313(c) and 313(d) of the Trust Indenture Act.

Section 4.04 Preservation of
Information; Communication with Securityholders. (a) The Trustee shall preserve, in as current a form as is reasonably practicable,
all information as to the names and addresses of the holders of Securities contained in the most recent list furnished to it as
provided in Section 4.01 and as to the names and addresses of holders of Securities received by the Trustee in its capacity as
Security Registrar (if acting in such capacity).

(b)      The
Trustee may destroy any list furnished to it as provided in Section 4.01 upon receipt of a new list so furnished.

(c)      Securityholders
may communicate as provided in Section 312(b) of the Trust Indenture Act with other Securityholders with respect to their rights
under this Indenture or under the Securities. The Issuer, the Trustee, the Security Registrar and any other Person shall have the
protection of Section 312(c) of the Trust Indenture Act.

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ARTICLE 5

REMEDIES OF THE TRUSTEE AND SECURITYHOLDERS ON EVENT OF DEFAULT

Section 5.01 Event of Default
Defined; Acceleration of Maturity; Waiver of Default. “Event of Default”, with respect to Securities
of any series wherever used herein, means each one of the following events which shall have occurred and be continuing (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 in the payment of any
installment of interest upon any of the Securities of such series as and when the same shall become due and payable, and continuance
of such default for a period of 30 days (or such other period as may be established for the Securities of such series as contemplated
by Section 2.03); or

(b) default in the payment of all
or any part of the principal on any of the Securities of such series as and when the same shall become due and payable either at
maturity, upon redemption, by declaration or otherwise (and, if established for the Securities of such series as contemplated by
Section 2.03, the continuance of such default for a specified period); or

(c) default in the performance,
or breach, of any covenant or agreement of the Issuer in respect of the Securities of such series (other than a covenant or agreement
in respect of the Securities of such series a default in the performance or breach of which is elsewhere in this Section specifically
dealt with), and continuance of such default or breach for a period of 90 days after there has been given, by registered or certified
mail, to the Issuer by the Trustee or to the Issuer and the Trustee by the Holders of at least 25% in principal amount of the Outstanding
Securities of all series affected thereby, a written notice specifying such default or breach and requiring it to be remedied and
stating that such notice is a “Notice of Default” hereunder; or

(d) a court having jurisdiction
in the premises shall enter a decree or order for relief in respect of the Issuer in an involuntary case under any applicable bankruptcy,
insolvency or other similar law now or hereafter in effect, or appointing a receiver, liquidator, assignee, custodian, trustee
or sequestrator (or similar official) of the Issuer or for all or substantially all of its property and assets or ordering the
winding up or liquidation of its affairs, and such decree or order shall remain unstayed and in effect for a period of 90 consecutive
days; or

(e) the Issuer shall commence a
voluntary case under any applicable bankruptcy, insolvency or other similar law now or hereafter in effect, or consent to the entry
of an order for relief in an involuntary case under any such law, or consent to the appointment of or taking possession by a receiver,
liquidator, assignee, custodian, trustee or sequestrator (or similar official) of the Issuer or for any substantial part of its
property and assets, or make any general assignment for the benefit of creditors; or

(f) any other Event of Default
provided for in such series of Securities.

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If an Event of Default described in clauses
(a), (b), (c) or (f) occurs and is continuing, then, and in each and every such case, unless the principal of all of the Securities
of such series shall have already become due and payable, either the Trustee or the Holders of not less than 25% in aggregate principal
amount of the Securities of such series then Outstanding hereunder (each such series voting as a separate class) by notice in writing
to the Issuer (and also to the Trustee if given by Securityholders), may declare the entire principal (or, if the Securities of
such series are Original Issue Discount Securities, such portion of the principal amount as may be specified in the terms of such
series) of all Securities of such series and the interest accrued thereon, if any, to be due and payable immediately, and upon
any such declaration the same shall become immediately due and payable. If an Event of Default described in clauses (d) or (e)
occurs and is continuing, then and in each and every such case, the entire principal (or, if any Securities are Original Issue
Discount Securities, such portion of the principal as may be specified in the terms thereof) of all the Securities then Outstanding
and interest accrued thereon, if any, shall become immediately due and payable.

The foregoing provisions, however, are
subject to the condition that if, at any time after the principal of the Securities of any series shall have been so declared due
and payable, and before any judgment or decree for the payment of the moneys due shall have been obtained or entered as hereinafter
provided, the Issuer shall pay or shall deposit with the Trustee a sum sufficient to pay all matured installments of interest upon
all the Securities of such series and the principal of any and all Securities of such series which shall have become due otherwise
than by acceleration (with interest upon such principal and, to the extent that payment of such interest is enforceable under applicable
law, on overdue installments of interest, at the same rate as the rate of interest specified in the Securities of such series to
the date of such payment or deposit) and such amount as shall be sufficient to cover reasonable compensation to the Trustee, its
agents, attorneys and counsel, and all other expenses and liabilities incurred, and all advances made, by the Trustee except as
a result of negligence or bad faith, and if any and all Events of Default under the Indenture with respect to such series, other
than the non-payment of the principal of Securities of such series which shall have become due solely by such acceleration, shall
have been cured, waived or otherwise remedied as provided herein, then and in every such case the Holders of a majority in aggregate
principal amount of all the Securities of such series then Outstanding, by written notice to the Issuer and to the Trustee, may
waive all defaults with respect to such series and rescind and annul such declaration and its consequences, but no such waiver
or rescission and annulment shall extend to or shall affect any subsequent default or shall impair any right consequent thereon.

Unless otherwise indicated in the Board
Resolution, Officer’s Certificate or supplemental indenture for a series of Original Issue Discount Securities, for all purposes
under this Indenture, if a portion of the principal of any Original Issue Discount Securities shall have been accelerated and declared
due and payable pursuant to the provisions hereof, then, from and after such declaration, unless such declaration has been rescinded
and annulled, the principal amount of such Original Issue Discount Securities shall be deemed, for all purposes hereunder, to be
such portion of the principal thereof as shall be due and payable as a result of such acceleration, and payment of such portion
of the principal thereof as shall be due and payable as a result of such acceleration, together with interest, if any, thereon
and all other amounts owing thereunder, shall constitute payment in full of such Original Issue Discount Securities.

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Section 5.02     Collection
of Debt by Trustee; Trustee May Prove Debt. The Issuer covenants that (a) in case default shall be made in the payment of any
installment of interest on any of the Securities of any series when such interest shall have become due and payable, and such default
shall have continued for a period of 30 days or (b) in case default shall be made in the payment of all or any part of the principal
of any of the Securities of any series when the same shall have become due and payable, whether upon maturity of the Securities
of such series or upon any redemption or by declaration or otherwise--then, upon demand of the Trustee, the Issuer will pay to
the Trustee for the benefit of the Holders of the Securities of such series the whole amount that then shall have become due and
payable on all Securities of such series for principal or interest, as the case may be (with interest to the date of such payment
upon the overdue principal and, to the extent that payment of such interest is enforceable under applicable law, on overdue installments
of interest at the same rate as the rate of interest or Yield to Maturity (in the case of Original Issue Discount Securities) specified
in the Securities of such series); and, in addition thereto, such further amount as shall be sufficient to cover the costs and
expenses of collection, including reasonable compensation to the Trustee and each predecessor trustee, their respective agents,
attorneys and counsel, and any expenses and liabilities incurred, and all advances made, by the Trustee and each predecessor trustee
except as a result of its negligence or bad faith.

In case the Issuer shall fail forthwith
to pay such amounts upon such demand, the Trustee, in its own name and as trustee of an express trust, shall be entitled and empowered
to institute any action or proceedings at law or in equity for the collection of the sums so due and unpaid, and may prosecute
any such action or proceedings to judgment or final decree, and may enforce any such judgment or final decree against the Issuer
or other obligor upon such Securities and collect in the manner provided by law out of the property of the Issuer or other obligor
upon such Securities, wherever situated, the moneys adjudged or decreed to be payable.

In case there shall be pending proceedings
relative to the Issuer or any other obligor upon the Securities under Title 11 of the United States Code or any other applicable
Federal or state bankruptcy, insolvency or other similar law, or in case a receiver, assignee or trustee in bankruptcy or reorganization,
liquidator, sequestrator or similar official shall have been appointed for or taken possession of the Issuer or its property or
such other obligor or its property, or in case of any other comparable judicial proceedings relative to the Issuer or other obligor
upon the Securities of any series, or to the creditors or property of the Issuer or such other obligor, the Trustee, irrespective
of whether the principal of any Securities shall then be due and payable as therein expressed or by declaration or otherwise and
irrespective of whether the Trustee shall have made any demand pursuant to the provisions of this Section, shall be entitled and
empowered, by intervention in such proceedings or otherwise:

(i)      to
file and prove a claim or claims for the whole amount of principal and interest (or, if the Securities of any series are Original
Issue Discount Securities, such portion of the principal amount as may be specified in the terms of such series) owing and unpaid
in respect of the Securities of any series, and to file such other papers or documents as may be necessary or advisable in order
to have the claims of the Trustee (including any claim for reasonable compensation to the Trustee and each predecessor trustee,
and their respective agents, attorneys and counsel, and for reimbursement of all expenses and liabilities incurred, and all advances
made, by the Trustee and each predecessor trustee, except as a result of negligence or bad faith) and of the Securityholders allowed
in any judicial proceedings relative to the Issuer or other obligor upon the Securities of any series, or to the creditors or property
of the Issuer or such other obligor,

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(ii) unless prohibited by applicable
law and regulations, to vote on behalf of the Holders of the Securities of any series in any election of a trustee or a standby
trustee in arrangement, reorganization, liquidation or other bankruptcy or insolvency proceedings or person performing similar
functions in comparable proceedings, and

(iii) to collect and receive any
moneys or other property payable or deliverable on any such claims, and to distribute all amounts received with respect to the
claims of the Securityholders and of the Trustee on their behalf; and any trustee, receiver or liquidator, custodian or other similar
official is hereby authorized by each of the Securityholders to make payments to the Trustee, and, in the event that the Trustee
shall consent to the making of payments directly to the Securityholders, to pay to the Trustee such amounts as shall be sufficient
to cover reasonable compensation to the Trustee, each predecessor trustee and their respective agents, attorneys and counsel, and
all other expenses and liabilities incurred, and all advances made, by the Trustee and each predecessor trustee except as a result
of negligence or bad faith and all other amounts due to the Trustee or any predecessor trustee pursuant to Section 6.06.

Nothing herein contained shall be deemed
to authorize the Trustee to authorize or consent to or vote for or accept or adopt on behalf of any Securityholder any plan of
reorganization, arrangement, adjustment or composition affecting the Securities of any series or the rights of any Holder thereof,
or to authorize the Trustee to vote in respect of the claim of any Securityholder in any such proceeding except, as aforesaid,
to vote for the election of a trustee in bankruptcy or similar person.

All rights of action and of asserting
claims under this Indenture, or under any of the Securities of any series, may be enforced by the Trustee without the possession
of any of the Securities of such series or the production thereof on any trial or other proceedings relative thereto, and any such
action or proceedings instituted by the Trustee shall be brought in its own name as trustee of an express trust, and any recovery
of judgment, subject to the payment of the expenses, disbursements and compensation of the Trustee, each predecessor trustee and
their respective agents and attorneys, shall be for the ratable benefit of the Holders of the Securities in respect of which such
action was taken.

In any proceedings brought by the Trustee
(and also any proceedings involving the interpretation of any provision of this Indenture to which the Trustee shall be a party),
the Trustee shall be held to represent all the Holders of the Securities in respect to which such action was taken, and it shall
not be necessary to make any Holders of such Securities parties to any such proceedings.

Section 5.03     Application
of Proceeds. Any moneys collected by the Trustee pursuant to this Article in respect of any series shall be applied in the
following order at the date or dates fixed by the Trustee and, in case of the distribution of such moneys on account of principal
or interest, upon presentation of the several Securities in respect of which monies have been collected and stamping (or otherwise
noting) thereon the payment, or issuing Securities of such series in reduced principal amounts in exchange for the presented Securities
of like series if only partially paid, or upon surrender thereof if fully paid:

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First:
To the payment of all amounts due to the Trustee or any predecessor trustee pursuant to Section 6.06;

Second:
In case the principal of the Securities of such series in respect of which moneys have been collected shall not have become
and be then due and payable, to the payment of interest on the Securities of such series in default in the order of the maturity
of the installments of such interest, with interest (to the extent that such interest has been collected by the Trustee) upon the
overdue installments of interest, to the extent permitted by applicable law, at the same rate as the rate of interest or Yield
to Maturity (in the case of Original Issue Discount Securities) specified in such Securities, such payments to be made ratably
to the Persons entitled thereto, without discrimination or preference;

Third:
In case the principal of the Securities of such series in respect of which moneys have been collected shall have become
and shall be then due and payable, to the payment of the whole amount then owing and unpaid upon all the Securities of such series
for principal and interest, with interest upon the overdue principal, and (to the extent that such interest has been collected
by the Trustee) upon overdue installments of interest, to the extent permitted by applicable law, at the same rate as the rate
of interest or Yield to Maturity (in the case of Original Issue Discount Securities) specified in the Securities of such series;
and in case such moneys shall be insufficient to pay in full the whole amount so due and unpaid upon the Securities of such series,
then to the payment of such principal and interest, without preference or priority of principal over interest, or of interest over
principal, or of any installment of interest over any other installment of interest, or of any Security of such series over any
other Security of such series, ratably to the aggregate of such principal and accrued and unpaid interest; and

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

Section 5.04     Suits
for Enforcement. In case an Event of Default has occurred, has not been waived and is continuing, the Trustee may in its discretion
proceed to protect and enforce the rights vested in it by this Indenture by such appropriate judicial proceedings as the Trustee
shall deem most effectual to protect and enforce any such rights, either at law or in equity or in bankruptcy or otherwise, whether
for the specific enforcement of any covenant or agreement contained in this Indenture or in aid of the exercise of any power granted
in this Indenture or to enforce any other legal or equitable right vested in the Trustee by this Indenture or by law.

Section 5.05     Restoration
of Rights on Abandonment of Proceedings. In case the Trustee shall have proceeded to enforce any right under this Indenture
and such proceedings shall have been discontinued or abandoned for any reason, or shall have been determined adversely to the Trustee,
then and in every such case (subject to any determination in such proceeding) the Issuer and the Trustee shall be restored respectively
to their former positions and rights hereunder, and all rights, remedies and powers of the Issuer, the Trustee and the Securityholders
shall continue as though no such proceedings had been taken.

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Section 5.06     Limitations
on Suits by Securityholders. No Holder of any Security of any series shall have any right by virtue or by availing of any provision
of this Indenture to institute any action or proceeding at law or in equity or in bankruptcy or otherwise upon or under or with
respect to this Indenture, or for the appointment of a trustee, receiver, liquidator, custodian or other similar official or for
any other remedy hereunder, unless such Holder previously shall have given to the Trustee written notice of default and of the
continuance thereof, as hereinbefore provided, and unless also the Holders of not less than 25% in aggregate principal amount of
the Securities of such series then Outstanding shall have made written request upon the Trustee to institute such action or proceedings
in its own name as trustee hereunder and shall have offered to the Trustee such reasonable indemnity as it may require against
the costs, expenses and liabilities to be incurred therein or thereby and the Trustee for 60 days after its receipt of such notice,
request and offer of indemnity shall have failed to institute any such action or proceeding and no direction inconsistent with
such written request shall have been given to the Trustee pursuant to Section 5.09; it being understood and intended, and being
expressly covenanted by the Holder of every Security with every other Holder and the Trustee, that no one or more Holders of Securities
of any series shall have any right in any manner whatever by virtue or by availing of any provision of this Indenture to affect,
disturb or prejudice the rights of any other such Holder of Securities, or to obtain or seek to obtain priority over or preference
to any other such Holder or to enforce any right under this Indenture, except in the manner herein provided and for the equal,
ratable and common benefit of all Holders of Securities of the applicable series. For the protection and enforcement of the provisions
of this Section, each and every Securityholder and the Trustee shall be entitled to such relief as can be given either at law or
in equity.

Section 5.07     Unconditional
Right of Securityholders to Institute Certain Suits. Notwithstanding any other provision in this Indenture and any provision
of any Security, the right of any Holder of any Security to receive payment of the principal of and interest on such Security on
or after the respective due dates expressed in such Security in accordance with the terms hereof and thereof, or to institute suit
for the enforcement of any such payment on or after such respective dates, shall not be impaired or affected without the consent
of such Holder; it being understood and intended, and being expressly covenanted by the Holder of every Security with every other
Holder and the Trustee, that no one or more Holders of Securities of any series shall have any right in any manner whatever by
virtue or by availing of any provision of this Indenture to affect, disturb or prejudice the rights of any other such Holder of
Securities, or to obtain or seek to obtain priority over or preference to any other such Holder or to enforce any right under this
Indenture, except in the manner herein provided and for the equal, ratable and common benefit of all Holders of Securities of the
applicable series. For the protection and enforcement of the provisions of this Section, each and every Securityholder and the
Trustee shall be entitled to such relief as can be given either at law or in equity.

Section 5.08     Powers
and Remedies Cumulative; Delay or Omission Not Waiver of Default. Except as provided in Section 5.06, no right or remedy
herein conferred upon or reserved to the Trustee or to the Holders of Securities 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, or otherwise, shall not prevent the concurrent assertion or employment of any other appropriate right or remedy.

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No delay or omission of the Trustee or
of any Holder of Securities to exercise any right or power accruing upon any Event of Default occurring and continuing as aforesaid
shall impair any such right or power or shall be construed to be a waiver of any such Event of Default or an acquiescence therein;
and, subject to Section 5.06, every power and remedy given by this Indenture or by law to the Trustee or to the Holders of Securities
may be exercised from time to time, and as often as shall be deemed expedient, by the Trustee or by the Holders of Securities.

Section 5.09     Control
by Holders of Securities. The Holders of a majority in aggregate principal amount of the Securities of each series affected
(with each series voting as a separate class) at the time Outstanding shall have the right to direct the time, method and place
of conducting any proceeding for any remedy available to the Trustee, or exercising any trust or power conferred on the Trustee
with respect to the Securities of such series by this Indenture; provided, that such direction shall not be otherwise than
in accordance with law and the provisions of this Indenture and provided, further, that (subject to the provisions of Section 6.01)
the Trustee shall have the right to decline to follow any such direction if the Trustee, being advised by counsel, shall determine
that the action or proceeding so directed may not lawfully be taken or if the Trustee in good faith by its board of directors,
the executive committee, or a trust committee of directors or Responsible Officers of the Trustee shall determine that the action
or proceedings so directed would involve the Trustee in personal liability or if the Trustee in good faith shall so determine that
the actions or forbearances specified in or pursuant to such direction would be unduly prejudicial to the interests of Holders
of the Securities of all series so affected not joining in the giving of said direction, it being understood that (subject to Section
6.01) the Trustee shall have no duty to ascertain whether or not such actions or forbearances are unduly prejudicial to such Holders.

Nothing in this Indenture shall impair
the right of the Trustee in its discretion to take any action deemed proper by the Trustee and which is not inconsistent with such
direction or directions by Securityholders.

Section 5.10     Waiver
of Past Defaults. The Holders of a majority in aggregate principal amount of the Securities of such series at the time Outstanding,
by notice to the Trustee, may on behalf of the Holders of all the Securities of such series waive any existing default in the performance
of any of the covenants contained herein or established pursuant to Section 2.03 with respect to such series and its consequences,
except an uncured default in the payment of the principal of, or interest on, any of the Securities of that series as and when
the same shall become due by the terms of such Securities; and may rescind an acceleration and its consequences, including any
related payment default that resulted from such acceleration. In the case of any such waiver, the Issuer, the Trustee and the Holders
of the Securities of such series shall be restored to their former positions and rights hereunder, respectively, such default shall
cease to exist and be deemed to have been cured and not to have occurred, and any Event of Default arising therefrom shall be deemed
to have been cured, and not to have occurred for every purpose of this Indenture; but no such waiver shall extend to any subsequent
or other default or Event of Default or impair any right consequent thereon.

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Section 5.11     Trustee
to Give Notice of Default. The Trustee shall, within 90 days after the occurrence of a default with respect to the Securities
of any series, give notice of all defaults with respect to that series known to the Trustee to all Holders of Securities of such
series in the manner and to the extent provided in Section 4.03, unless in each case such defaults shall have been cured before
the mailing or publication of such notice (the term “defaults” for the purpose of this Section being hereby
defined to mean any event or condition which is, or with notice or lapse of time or both would become, an Event of Default); provided,
that, except in the case of default in the payment of the principal of or interest on any of the Securities of such series, or
in the payment of any sinking fund installment on such series, the Trustee shall be protected in withholding such notice if and
so long as the board of directors, the executive committee, or a trust committee of directors or trustees and/or Responsible Officers
of the Trustee in good faith determines that the withholding of such notice is in the interests of the Securityholders of such
series.

Section 5.12     Right
of Court to Require Filing of Undertaking to Pay Costs. All parties to this Indenture agree, and each Holder of any
Security by his or her acceptance thereof shall be deemed to have agreed, that any court may in its discretion require, 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, suffered
or omitted by it as Trustee, the filing by any party litigant in such suit of an undertaking to pay the costs of such suit, and
that such court may in its discretion assess reasonable costs, including reasonable attorneys’ fees, against any party litigant
in such suit, having due regard to the merits and good faith of the claims or defenses made by such party litigant; but the provisions
of this Section shall not apply to any suit instituted by the Trustee, to any suit instituted by any Securityholder or group of
Securityholders of any series holding in the aggregate more than 10% in aggregate principal amount of the Securities of such series,
or to any suit instituted by any Securityholder for the enforcement of the payment of the principal of or interest on any Security
of such series, on or after the respective due dates expressed in such Security or established pursuant to this Indenture.

ARTICLE 6

CONCERNING THE TRUSTEE

Section 6.01     Duties
and Responsibilities of the Trustee; During Default; Prior to Default.  With respect to the Holders of any series of
Securities issued hereunder, the Trustee, prior to the occurrence of an Event of Default with respect to the Securities of a particular
series and after the curing or waiving of all Events of Default which may have occurred with respect to such series, undertakes
to perform such duties and only such duties as are specifically set forth in this Indenture. In case an Event of Default with respect
to the Securities of a series 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 or her own affairs.

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.

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Section 6.02 Certain Rights
of the Trustee. In furtherance of and subject to the Trust Indenture Act of 1939 and subject to Section 6.01:

(a) in the absence of bad faith
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 statements, certificates or opinions furnished to the Trustee and conforming to the requirements of
this Indenture; but, in the case of any such statements, certificates or opinions which by any provision 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;

(b) the Trustee shall not be liable
for any error of judgment made in good faith by a Responsible Officer or Responsible Officers of the Trustee, unless it shall be
proved that the Trustee was negligent in ascertaining the pertinent facts;

(c) 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 direction of the Holders pursuant
to Section 5.09 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;

(d) 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 shall be reasonable ground for
believing that the repayment of such funds or adequate indemnity against such liability is not reasonably assured to it;

(e) the Trustee may rely and shall
be protected in acting or refraining from acting upon any resolution, Officer’s Certificate or any other certificate, statement,
instrument, opinion, report, notice, request, consent, order, bond, debenture, note, security or other paper or document believed
by it to be genuine and to have been signed or presented by the proper party or parties;

(f) any request, direction, order
or demand of the Issuer mentioned herein shall be sufficiently evidenced by an Officer’s 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 or an assistant secretary of the Issuer;

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

(h) the Trustee shall be under
no obligation to exercise any of the trusts or powers vested in it by this Indenture at the request, order or direction of any
of the Securityholders pursuant to the provisions of this Indenture, unless such Securityholders shall have offered to the Trustee
reasonable security or indemnity against the costs, expenses and liabilities which might be incurred therein or thereby;

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

(j) prior to the occurrence of
an Event of Default hereunder and after the curing or waiving of all Events of Default, 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, consent, order, approval, appraisal, bond, debenture, note, security, or other paper or document unless requested in writing
so to do by the Holders of not less than a majority in aggregate principal amount of the Securities of all series affected then
Outstanding; provided, that, if the payment within a reasonable time to the Trustee of the costs, expenses or liabilities
likely to be incurred by it in the making of such investigation is, in the opinion of the Trustee, not reasonably assured to the
Trustee by the security afforded to it by the terms of this Indenture, the Trustee may require reasonable indemnity against such
expenses or liabilities as a condition to proceeding; the reasonable expenses of every such investigation shall be paid by the
Issuer or, if paid by the Trustee or any predecessor trustee, shall be repaid by the Issuer upon demand; and

(k) 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 not regularly
in its employ and the Trustee shall not be responsible for any misconduct or negligence on the part of any such agent or attorney
appointed with due care by it hereunder.

Section 6.03 Trustee Not Responsible
for Recitals, Disposition of Securities or Application of Proceeds Thereof. The recitals contained herein and in the
Securities, except the Trustee’s certificates of authentication, shall be taken as the statements of the Issuer, and the
Trustee assumes no responsibility for the correctness of the same. The Trustee makes no representation as to the validity or sufficiency
of this Indenture or of the Securities. The Trustee shall not be accountable for the use or application by the Issuer of any of
the Securities or of the proceeds thereof.

Section 6.04 Trustee and Agents
May Hold Securities; Collections, Etc. The Trustee or any agent of the Issuer or the Trustee, in its individual or any other
capacity, may become the owner or pledgee of Securities with the same rights it would have if it were not the Trustee or such agent
and may otherwise deal with the Issuer and receive, collect, hold and retain collections from the Issuer with the same rights it
would have if it were not the Trustee or such agent.

Section 6.05 Moneys Held by
Trustee. Subject to the provisions of Section 10.04 hereof, all moneys received by the Trustee shall, until used or applied
as herein provided, be held in trust for the purposes for which they were received, but need not be segregated from other funds
except to the extent required by mandatory provisions of law. Neither the Trustee nor any agent of the Issuer or the Trustee shall
be under any liability for interest on any moneys received by it hereunder.

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Section 6.06 Compensation and
Indemnification of Trustee and Its Prior Claim. The Issuer covenants and agrees to pay to the Trustee from time to time,
and the Trustee shall be entitled to, such reasonable compensation (which shall not be limited by any provision of law in regard
to the compensation of a trustee of an express trust) as the Issuer and the Trustee may from time to time agree in writing and,
except as otherwise expressly provided herein, the Issuer covenants and agrees to pay or reimburse the Trustee and each predecessor
trustee upon its request for all reasonable expenses, disbursements and advances incurred or made by or on behalf of it in accordance
with any of the provisions of this Indenture (including the reasonable compensation and the expenses and disbursements of its counsel
and of all agents and other persons not regularly in its employ) except any such expense, disbursement or advance as may arise
from its negligence or bad faith. The Issuer also covenants to indemnify the Trustee and each predecessor trustee for, and to hold
it harmless against, any loss, liability or expense incurred without negligence or bad faith on its part, arising out of or in
connection with the acceptance or administration of this Indenture or the trusts hereunder and its duties hereunder, including
the costs and expenses of defending itself against or investigating any claim of liability in the premises. The obligations of
the Issuer under this Section to compensate and indemnify the Trustee and each predecessor trustee and to pay or reimburse the
Trustee and each predecessor trustee for expenses, disbursements and advances shall constitute additional indebtedness hereunder
and shall survive the satisfaction and discharge of this Indenture. Such additional indebtedness shall be a senior claim to that
of the Securities 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 Securities, and the Securities are hereby subordinated to such senior claim.

Section 6.07 Right of Trustee
to Rely on Officer’s Certificate, Etc. Subject to Sections 6.01 and 6.02, whenever in the administration of the trusts
of this Indenture the Trustee shall deem it necessary or desirable that a matter be proved or established prior to taking or suffering
or omitting any action hereunder, such matter (unless other evidence in respect thereof be herein specifically prescribed) may,
in the absence of negligence or bad faith on the part of the Trustee, be deemed to be conclusively proved and established by an
Officer’s Certificate delivered to the Trustee, and such certificate, in the absence of negligence or bad faith on the part
of the Trustee, shall be full warrant to the Trustee for any action taken, suffered or omitted by it under the provisions of this
Indenture upon the faith thereof.

Section 6.08 Disqualification;
Conflicting Interests. If the Trustee has or shall acquire any "conflicting interest" within the meaning of Section
310(b) of the Trust Indenture Act, the Trustee and the Issuer shall in all respects comply with the provisions of Section 310(b)
of the Trust Indenture Act.

Section 6.09 Persons Eligible
for Appointment as Trustee. The Trustee for each series of Securities hereunder shall at all times be a corporation having
a combined capital and surplus of at least $50,000,000 and shall be eligible in accordance with the provisions of Section 310(a)
of the Trust Indenture Act of 1939. If such corporation publishes reports of condition at least annually, pursuant to law or to
the requirements of a Federal, State or District of Columbia supervising or examining authority, then, for the purposes of this
Section, the combined capital and surplus of such corporation shall be deemed to be its combined capital and surplus as set forth
in its most recent report of condition so published.

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Section 6.10 Resignation and
Removal; Appointment of Successor Trustee. a) The Trustee, or any trustee or trustees hereafter appointed, may at any
time resign with respect to one or more or all series of Securities by giving written notice of resignation to the Issuer and by
mailing notice of such resignation to the Holders of then Outstanding Securities of each series affected at their addresses as
they shall appear on the Security register. Upon receiving such notice of resignation, the Issuer shall promptly appoint a successor
trustee or trustees with respect to the applicable series by written instrument in duplicate, executed by authority of the Board
of Directors, one copy of which instrument shall be delivered to the resigning Trustee and one copy to the successor trustee or
trustees. If no successor trustee shall have been so appointed with respect to any series and have accepted appointment within
30 days after the mailing of such notice of resignation, the resigning trustee may petition any court of competent jurisdiction
for the appointment of a successor trustee, or any Securityholder who has been a bona fide Holder of a Security or Securities of
the applicable series for at least six months may, on behalf of himself or herself 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 the provisions of Section 310(b) of the Trust Indenture Act of 1939 with respect to any series of Securities after written
request therefor by the Issuer or by any Securityholder who has been a bona fide Holder of a Security or Securities of such series
for at least six months; or

(ii) the Trustee shall cease to be
eligible in accordance with the provisions of Section 310(a) of the Trust Indenture Act of 1939 and shall fail to resign after
written request therefor by the Issuer or by any Securityholder; or

(iii) the Trustee shall become incapable
of acting with respect to any series of Securities, or shall be adjudged bankrupt or insolvent, or a receiver or liquidator 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, (A) the Issuer may remove the
Trustee with respect to the applicable series of Securities and appoint a successor trustee for such series 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, (B) subject to Section 315(e) of the Trust Indenture Act of 1939, any Securityholder
who has been a bona fide Holder of a Security or Securities of such series for at least six months may on behalf of himself or
herself and all others similarly situated, petition any court of competent jurisdiction for the removal of the Trustee and the
appointment of a successor trustee with respect to such series. Such court may thereupon, after such notice, if any, as it may
deem proper and prescribe, remove the Trustee and appoint a successor trustee.

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(c) The Holders of a majority in
aggregate principal amount of the Securities of each series at the time Outstanding may at any time remove the Trustee with respect
to Securities of such series and, with the consent of the Issuer, appoint a successor trustee with respect to the Securities of
such series by delivering to the Trustee so removed, to the successor trustee so appointed and to the Issuer the evidence provided
for in Section 7.01 of the action in that regard taken by the Securityholders.

(d) Any resignation or removal
of the Trustee with respect to any series and any appointment of a successor trustee with respect to such series pursuant to any
of the provisions of this Section 6.10 shall become effective upon acceptance of appointment by the successor trustee as provided
in Section 6.11.

Section 6.11 Acceptance of
Appointment by Successor Trustee. Any successor trustee appointed as provided in Section 6.10 shall execute and deliver to
the Issuer and to its predecessor trustee an instrument accepting such appointment hereunder, and thereupon the resignation or
removal of the predecessor trustee with respect to all or any applicable series shall become effective and such successor trustee,
without any further act, deed or conveyance, shall become vested with all rights, powers, duties and obligations with respect to
such series of its predecessor hereunder, with like effect as if originally named as trustee for such series hereunder; but, nevertheless,
on the written request of the Issuer or of the successor trustee, upon payment of its charges then unpaid, the trustee ceasing
to act shall, subject to Section 10.04, pay over to the successor trustee all moneys at the time held by it hereunder and shall
execute and deliver an instrument transferring to such successor trustee all such rights, powers, duties and obligations. Upon
request of any such successor trustee, the Issuer 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 prior claim upon all property or funds held or collected by such trustee to secure any amounts then due it pursuant to
the provisions of Section 6.06.

If a successor trustee is appointed with
respect to the Securities of one or more (but not all) series, the Issuer, the predecessor trustee and each successor trustee with
respect to the Securities of any applicable series shall execute and deliver an indenture supplemental hereto which shall contain
such provisions as shall be deemed necessary or desirable to confirm that all the rights, powers, trusts and duties of the predecessor
trustee with respect to the Securities of any series as to which the predecessor trustee is not retiring shall continue to be vested
in the predecessor trustee, and shall add to or change any of the provisions of this Indenture as shall be necessary to provide
for or facilitate the administration of the trusts hereunder by more than one trustee, it being understood that nothing herein
or in such supplemental indenture shall constitute such trustees co-trustees of the same trust and that each such trustee shall
be trustee of a trust or trusts under separate indentures.

No successor trustee with respect to
any series of Securities shall accept appointment as provided in this Section 6.11 unless at the time of such acceptance such successor
trustee shall be qualified under the provisions of Section 310(b) of the Trust Indenture Act of 1939 and eligible under the provisions
of Section 310(a) of the Trust Indenture Act of 1939.

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Upon acceptance of appointment by any
successor trustee as provided in this Section 6.11, the Issuer shall mail notice thereof to the Holders of Securities of each series
affected, by mailing such notice to such Holders at their addresses as they shall appear on the Security register. If the acceptance
of appointment is substantially contemporaneous with the resignation, then the notice called for by the preceding sentence may
be combined with the notice called for by Section 6.10. If the Issuer fails to mail such notice within ten days after acceptance
of appointment by the successor trustee, the successor trustee shall cause such notice to be given at the expense of the Issuer.

Section 6.12 Merger, Conversion,
Consolidation or Succession to Business of Trustee. 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 the corporate trust business of the Trustee, shall be the successor of the Trustee
hereunder; provided, that such corporation shall be qualified under the provisions of Section 310(b) of the Trust Indenture
Act of 1939 and eligible under the provisions of Section 310(a) of the Trust Indenture Act of 1939, without the execution or filing
of any paper or any further act on the part of any of the parties hereto, anything herein to the contrary notwithstanding.

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

Section 6.13 Preferential Collection
of Claims Against the Issuer. The Trustee shall comply with Section 311(a) of the Trust Indenture Act, excluding any creditor
relationship described in Section 311(b) of the Trust Indenture Act. A Trustee who has resigned or been removed shall be subject
to Section 311(a) of the Trust Indenture Act to the extent included therein.

ARTICLE 7

CONCERNING THE SECURITYHOLDERS

Section 7.01 Evidence of Action
Taken by Securityholders. Any request, demand, authorization, direction, notice, consent, waiver or other action provided by
this Indenture to be given or taken by a specified percentage in principal amount of the Securityholders of any or all series may
be embodied in and evidenced by one or more instruments of substantially similar tenor signed by such specified percentage of Securityholders
in person or by agent 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. Proof of execution of any instrument or of a writing appointing
any such agent shall be sufficient for any purpose of this Indenture and (subject to Sections 6.01 and 6.02) conclusive in favor
of the Trustee and the Issuer, if made in the manner provided in this Article.

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Section 7.02 Proof of Execution
of Instruments and of Holding of Securities. Subject to Sections 6.01 and 6.02, the execution of any instrument by a
Holder or his agent or proxy may be proved in accordance with such reasonable rules and regulations as may be prescribed by the
Trustee or in such manner as shall be satisfactory to the Trustee. The holding of Securities shall be proved by the Security register
or by a certificate of the registrar thereof. The Issuer may set a record date for purposes of determining the identity of Holders
of any series entitled to vote or consent to any action referred to in Section 7.01, which record date may be set at any time or
from time to time by notice to the Trustee, for any date or dates (in the case of any adjournment or reconsideration) not more
than 60 days nor less than five days prior to the proposed date of such vote or consent, and thereafter, notwithstanding any other
provisions hereof, only Holders of such series of record on such record date shall be entitled to so vote or give such consent
or revoke such vote or consent. Notice of such record date may be given before or after any request for any action referred to
in Section 7.01 is made by the Issuer.

Section 7.03 Holders to Be
Treated as Owners. The Issuer, the Trustee and any agent of the Issuer or of the Trustee may deem and treat the Person in whose
name any Security shall be registered upon the Security register for such series as the absolute owner of such Security (whether
or not such Security shall be overdue and notwithstanding any notation of ownership or other writing thereon) for the purpose of
receiving payment of or on account of the principal of, and, subject to the provisions of this Indenture, interest on, such Security
and for all other purposes; and neither the Issuer nor the Trustee nor any agent of the Issuer or the Trustee shall be affected
by any notice to the contrary. All such payments so made to any such Person, or upon his or her order, shall be valid, and, to
the extent of the sum or sums so paid, effectual to satisfy and discharge the liability for moneys payable.

Section 7.04 Securities Owned
by Issuer Deemed Not Outstanding. In determining whether the Holders of the requisite aggregate principal amount of Outstanding
Securities of any or all series have concurred in any direction, consent or waiver under this Indenture, Securities which are owned
by the Issuer or any other obligor on the Securities with respect to which such determination is being made or by any Person directly
or indirectly controlling or controlled by or under direct or indirect common control with the Issuer or any other obligor on the
Securities with respect to which such determination is being made shall be disregarded and deemed not to be Outstanding for the
purpose of any such determination, except that, for the purpose of determining whether the Trustee shall be protected in relying
on any such direction, consent or waiver, only Securities which the Trustee knows are so owned shall be so disregarded. Securities
so owned which have been pledged in good faith may be regarded as Outstanding if the pledgee establishes to the satisfaction of
the Trustee the pledgee’s right so to act with respect to such Securities and that the pledgee is not the Issuer or any other
obligor upon the Securities or any Person directly or indirectly controlling or controlled by or under direct or indirect common
control with the Issuer or any other obligor on the Securities. In case of a dispute as to such right, the advice of counsel shall
be full protection in respect of any decision made by the Trustee in accordance with such advice.

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Section 7.05 Right of Revocation
of Action Taken. At any time prior to (but not after) the evidencing to the Trustee, as provided in Section 7.01, of the taking
of any action by the Holders of the percentage in aggregate principal amount of the Securities of any or all series, as the case
may be, specified in this Indenture in connection with such action, any Holder of a Security the serial number of which is shown
by the evidence to be included among the serial numbers of the Securities the Holders of which have consented to such action may,
by filing written notice at the Corporate Trust Office and upon proof of holding as provided in this Article, revoke such action
so far as concerns such Security. Except as aforesaid, any such action taken by the Holder of any Security shall be conclusive
and binding upon such Holder and upon all future Holders and owners of such Security and of any Securities issued in exchange or
substitution therefor or on registration of transfer thereof, irrespective of whether or not any notation in regard thereto is
made upon any such Security. Any action taken by the Holders of the percentage in aggregate principal amount of the Securities
of any or all series, as the case may be, specified in this Indenture in connection with such action shall be conclusively binding
upon the Issuer, the Trustee and the Holders of all the Securities affected by such action.

ARTICLE 8

SUPPLEMENTAL INDENTURES

Section 8.01 Supplemental Indentures
Without Consent of Securityholders. The Issuer, when authorized by a resolution of its Board of Directors, and the Trustee
may from time to time and at any time, without the consent of any of the Securityholders, enter into an indenture or indentures
supplemental hereto in form satisfactory to the Trustee for one or more of the following purposes:

(a) to convey, transfer, assign,
mortgage or pledge to the Trustee as security for the Securities of one or more series any property or assets;

(b) to evidence the succession
of a corporation, limited liability company, partnership or trust to the Issuer, or successive successions, and the assumption
by such successor of the covenants, agreements and obligations of the Issuer pursuant to, or to otherwise comply with, Article
9;

(c) to comply with the requirements
of the Commission in order to effect or maintain the qualification of this Indenture under the Trust Indenture Act of 1939, as
amended;

(d) to add to the covenants of
the Issuer such further covenants, restrictions, conditions or provisions as its Board of Directors and the Trustee shall consider
to be for the protection of the Holders of Securities, and to make the occurrence, or the occurrence and continuance, of a default
in any such additional covenants, restrictions, conditions or provisions an Event of Default permitting the enforcement of all
or any of the several remedies provided in this Indenture as herein set forth; provided, that in respect of any such additional
covenant, restriction, condition or provision such supplemental indenture may provide for a particular period of grace after default
(which period may be shorter or longer than that allowed in the case of other defaults) or may provide for an immediate enforcement
upon such an Event of Default or may limit the remedies available to the Trustee upon such an Event of Default or may limit the
right of the Holders of a majority in aggregate principal amount of the Securities of such series to waive such an Event of Default;

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(e) to cure any ambiguity, defect
or inconsistency, or to conform this Indenture or any supplemental indenture to the description of the Securities set forth in
any prospectus or prospectus supplement related to such series of Securities;

(f) to provide for or add guarantors
for the Securities of one or more series;

(g) to establish the form or terms
of Securities of any series as permitted by Sections 2.01 and 2.03;

(h) to evidence and provide for
the acceptance of appointment hereunder by a successor trustee with respect to the Securities of one or more series and to add
to or change any of the provisions of this Indenture as shall be necessary to provide for or facilitate the administration of the
trusts hereunder by more than one trustee, pursuant to the requirements of Section 6.11;

(i) to add to, delete from or revise
the conditions, limitations and restrictions on the authorized amount, terms, purposes of issue, authentication and delivery of
any series of Securities, as herein set forth;

(j) to make any change to the Securities
of any series so long as no Securities of such series are Outstanding; and

(k) to make any other change that
does not adversely affect the interests of the Holders of the Securities in any material respect.

The Trustee shall join with the Issuer
in the execution of any such supplemental indenture, to make any further appropriate agreements and stipulations which may be therein
contained and to accept the conveyance, transfer, assignment, mortgage or pledge of any property thereunder, but the Trustee shall
not be obligated to enter into any such supplemental indenture which affects the Trustee’s own rights, duties or immunities
under this Indenture or otherwise.

Any supplemental indenture authorized
by the provisions of this Section may be executed without the consent of the Holders of any of the Securities at the time Outstanding,
notwithstanding any of the provisions of Section 8.02.

Section 8.02 Supplemental Indentures
With Consent of Securityholders. With the consent (evidenced as provided in Article 7) of the Holders of not less than a majority
in aggregate principal amount of the Securities at the time Outstanding of one or more series affected by such supplemental indenture
(voting as separate series), the Issuer, when authorized by a resolution of the Board of Directors, and the Trustee may, from time
to time and at any time, 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 any supplemental indenture or of modifying
in any manner the rights of the Holders of the Securities of each such consenting series; provided, that no such supplemental
indenture shall, without the consent of the Holder of each Security so affected, (a) extend the final maturity of any Security,
or reduce the principal amount thereof, or reduce the rate or extend the time of payment of interest thereon, or reduce any amount

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payable on redemption thereof, or
make the principal thereof (including any amount in respect of original issue discount) or interest thereon payable in any currency
other than that provided in the Securities or in accordance with the terms thereof, or reduce the amount of the principal of an
Original Issue Discount Security that would be due and payable upon an acceleration of the maturity thereof pursuant to Section
5.01 or the amount thereof provable in bankruptcy pursuant to Section 5.02, or (b) waive an uncured default in the payment of principal
of any Security or interest thereon (except in the case of a rescission of acceleration of the Securities of such series by the
Holders of at least a majority in aggregate principal amount of the Securities of such series at the time Outstanding and a waiver
of the payment default that resulted from such acceleration) or change a provision related to the waiver of past defaults or changes
or impair the right of any Securityholder to institute suit for the payment or conversion thereof or, if the Securities provide
therefor, any right of repayment at the option of the Securityholder, or (c) modify any of the provisions of this section except
to increase any required percentage or to provide that certain other provisions cannot be modified or waived without the consent
of the Holder of each Security so affected, or (d) reduce the aforesaid percentage of Securities of any series, the consent of
the Holders of which is required for any such supplemental indenture or the consent of Holders of which is required for any modification,
amendment or waiver of compliance with certain provisions of this Indenture or certain defaults hereunder and their consequences
provided for in this Indenture.

A supplemental indenture which changes
or eliminates any covenant, Event of Default or other provision of this Indenture (1) that has been expressly included solely for
the benefit of one or more particular series of Securities, if any, or (2) which modifies the rights of Holders of Securities of
one or more series with respect to any covenant, Event of Default or provision, shall be deemed not to affect the rights under
this Indenture of the Holders of Securities of any other series with respect to which such covenant, Event of Default or other
provision has not been included or so modified.

Upon the request of the Issuer, accompanied
by a Board Resolution authorizing the execution of any such supplemental indenture, and upon the filing with the Trustee of evidence
of the consent of Securityholders as aforesaid and other documents, if any, required by Section 7.01, the Trustee shall join with
the Issuer in the execution of such supplemental indenture unless such supplemental indenture affects the Trustee’s own rights,
duties or immunities under this Indenture or otherwise, in which case the Trustee may in its discretion, but shall not be obligated
to, enter into such supplemental indenture.

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

Promptly after the execution by the Issuer
and the Trustee of any supplemental indenture pursuant to the provisions of this Section, the Trustee shall give a notice thereof
to the Holders of then Outstanding Securities of each series affected thereby, by mailing a notice thereof by first-class mail
to such Holders at their addresses as they shall appear on the Security register, and in each case such notice shall set forth
in general terms the substance of such supplemental indenture. Any failure of the Trustee to mail such notice, or any defect therein,
shall not, however, in any way impair or affect the validity of any such supplemental indenture.

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Section 8.03 Effect of Supplemental
Indenture. Upon the execution of any supplemental indenture pursuant to the provisions hereof, this Indenture shall be and
be deemed to be modified and amended in accordance therewith and the respective rights, limitations of rights, obligations, duties
and immunities under this Indenture of the Trustee, the Issuer and the Holders of Securities of each series affected thereby shall
thereafter be determined, exercised and enforced hereunder subject in all respects to such modifications and amendments, and all
the terms and conditions of any such supplemental indenture shall be and be deemed to be part of the terms and conditions of this
Indenture for any and all purposes.

Section 8.04 Documents to Be
Given to Trustee. The Trustee, subject to the provisions of Sections 6.01 and 6.02, may receive an Officer’s Certificate
and an Opinion of Counsel as conclusive evidence that any supplemental indenture executed pursuant to this Article 8 complies with
the applicable provisions of this Indenture.

Section 8.05 Notation on Securities
in Respect of Supplemental Indentures. Securities of any series authenticated and delivered after the execution of any
supplemental indenture pursuant to the provisions of this Article may bear a notation in form approved by the Trustee for such
series as to any matter provided for by such supplemental indenture or as to any action taken by Securityholders. If the Issuer
or the Trustee shall so determine, new Securities of any series so modified as to conform, in the opinion of the Trustee and the
Board of Directors, to any modification of this Indenture contained in any such supplemental indenture may be prepared by the Issuer,
authenticated by the Trustee and delivered in exchange for the Securities of such series then Outstanding.

ARTICLE 9

CONSOLIDATION, MERGER, SALE OR CONVEYANCE

Section 9.01 Issuer May Consolidate,
Etc., on Certain Terms. The Issuer shall not consolidate with or merge into any other Person (in a transaction in which the
Issuer is not the surviving corporation) or convey, transfer or lease its properties and assets substantially as an entirety to
any Person, unless (a) the Person formed by such consolidation or into which the Issuer is merged or the Person which acquires
by conveyance or transfer, or which leases, the properties and assets of the Issuer substantially as an entirety (i) shall be a
corporation, limited liability company, partnership or trust, (ii) shall be organized and validly existing under the laws of the
United States of America, any State thereof or the District of Columbia and (iii) shall expressly assume, by an indenture supplemental
hereto, executed and delivered to the Trustee, in form satisfactory to the Trustee, the due and punctual payment of the principal
of and interest on all the Securities and the performance or observance of every covenant of this Indenture on the part of the
Issuer to be performed, by supplemental indenture satisfactory in form to the Trustee, executed and delivered to the Trustee, by
the Person formed by such consolidation or into which the Issuer shall have been merged or by the Person which shall have acquired
the Issuer’s assets; (b) immediately after giving effect to such transaction, no Event of Default, and no event which, after
notice or lapse of time or both, would become an Event of Default, shall have happened and be continuing; and (c) the Issuer has
delivered to the Trustee an Officer’s Certificate and an Opinion of Counsel, each stating that such consolidation, merger,
conveyance, transfer or lease and, if a supplemental indenture is required in connection with such transaction, such supplemental
indenture comply with this Article and that all conditions precedent herein provided for relating to such transaction have been
complied with.

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The conditions of (a)(ii) above shall
not apply in the case of a corporation or entity not organized under the laws of the United States of America, any State thereof
or the District of Columbia which shall agree, in form satisfactory to the Trustee, (i) to subject itself to the jurisdiction of
the United States district court for the Southern District of New York and (ii) to indemnify and hold harmless the holders of all
Securities against (A) any tax, assessment or governmental charge imposed on such holders by a jurisdiction other than the United
States or any political subdivision or taxing authority thereof or therein with respect to, and withheld on the making of, any
payment of principal or interest on such Securities and which would not have been so imposed and withheld had such consolidation,
merger, sale or conveyance not been made and (B) any tax, assessment or governmental charge imposed on or relating to, and any
costs or expenses involved in, such consolidation, merger, sale or conveyance.

The restrictions in this Section 9.01
shall not apply to (i) the merger or consolidation of the Issuer with one of its affiliates, if the Board of Directors determines
in good faith that the purpose of such transaction is principally to change the Issuer’s State of incorporation or convert
the Issuer’s form of organization to another form, or (ii) the merger of the Issuer with or into a single direct or indirect
wholly owned Subsidiary.

Nothing contained in this Article shall
apply to, limit or impose any requirements upon the consolidation or merger of any Person into the Issuer where the Issuer is the
survivor of such transaction, or the acquisition by the Issuer, by purchase or otherwise, of all or any part of the property of
any other Person (whether or not affiliated with the Issuer).

Section 9.02 Successor Issuer
Substituted. Upon any consolidation of the Issuer with, or merger of the Issuer into, any other Person or any conveyance, transfer
or lease of the properties and assets of the Issuer substantially as an entirety in accordance with Section 9.01, the successor
Person formed by such consolidation or into which the Issuer is merged or to which such conveyance, transfer or lease is made shall
succeed to, and be substituted for, and may exercise every right and power of, the Issuer under this Indenture with the same effect
as if such successor Person had been named as the Issuer herein, and thereafter, except in the case of a lease, the predecessor
Person shall be relieved of all obligations and covenants under this Indenture and the Securities.

In case of any such consolidation, merger,
sale, lease or conveyance, such changes in phraseology and form (but not in substance) may be made in the Securities thereafter
to be issued as may be appropriate.

ARTICLE 10

SATISFACTION AND DISCHARGE OF INDENTURE; DEFEASANCE; UNCLAIMED MONEYS

Section 10.01 Satisfaction
and Discharge of Indenture; Defeasance. b) If at any time

(i) the Issuer shall have paid or
caused to be paid the principal of and interest on all the Securities of any series Outstanding hereunder (other than Securities
of such series which have been destroyed, lost or stolen and which have been replaced or paid as provided in Section 2.09) as and
when the same shall have become due and payable, or

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(ii) the Issuer shall have delivered
to the Trustee for cancellation all Securities of any series theretofore authenticated (other than any Securities of such series
which shall have been destroyed, lost or stolen and which shall have been replaced or paid as provided in Section 2.09) or

(iii) in the case of any series of
Securities the exact amount (including the currency of payment) of principal of and interest due on which on the dates referred
to in clause (B) below can be determined at the time of making the deposit referred to in such clause,

(A) all the Securities of such
series not theretofore delivered to the Trustee for cancellation shall have become due and payable, or are by their terms to become
due and payable within one year or are to be called for redemption within one year under arrangements satisfactory to the Trustee
for the giving of notice of redemption, and

(B) the Issuer shall have irrevocably
deposited or caused to be deposited with the Trustee as trust funds the entire amount in cash (other than moneys repaid by the
Trustee or any paying agent to the Issuer in accordance with Section 10.04) or, in the case of any series of Securities the payments
on which may only be made in Dollars, U.S. Government Obligations maturing as to principal and interest in such amounts and at
such times as will insure the availability of cash sufficient to pay on any subsequent interest payment date all interest due on
such interest payment date on the Securities of such series and to pay at maturity or upon redemption all Securities of such series
(in each case other than any Securities of such series which shall have been destroyed, lost or stolen and which shall have been
replaced or paid as provided in Section 2.09) not theretofore delivered to the Trustee for cancellation, including principal and
interest due or to become due to such date of maturity, as the case may be,

and if, in any such case (i), (ii) or (iii), the Issuer shall
also pay or cause to be paid all other sums payable hereunder by the Issuer, including amounts due the Trustee pursuant to Section
6.06, with respect to Securities of such series, then this Indenture shall cease to be of further effect with respect to Securities
of such series (except as to (1) rights of registration of transfer, conversion and exchange of Securities of such series and the
Issuer’s right of optional redemption, (2) substitution of mutilated, defaced, destroyed, lost or stolen Securities, (3)
rights of Holders of Securities to receive, solely from the trust fund described in Section 10.01(a)(iii)(B), payments of principal
thereof and interest thereon, upon the original stated due dates therefor (but not upon acceleration) and remaining rights of the
Holders to receive, solely from the trust fund described in Section 10.01(a)(iii)(B), sinking fund payments, if any, (4) the rights
(including the Trustee’s rights under Section 10.05) and immunities of the Trustee hereunder and the Trustee’s obligations
under Sections 10.02 and 10.04 and (5) the obligations of the Issuer under Section 3.02), and the Trustee, on demand of the Issuer
accompanied by an Officer’s Certificate and an Opinion of Counsel which complies with Section 11.05 and at the cost and expense
of the Issuer, shall execute proper instruments acknowledging such satisfaction of and discharging this Indenture with respect
to such series. The Issuer agrees to reimburse the Trustee for any costs or expenses thereafter reasonably and properly incurred
and to compensate the Trustee for any services thereafter reasonably and properly rendered by the Trustee in connection with this
Indenture or the Securities of such series.

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(b) The following subsection shall apply
to the Securities of each series unless specifically otherwise provided in a Board Resolution, Officer’s Certificate or indenture
supplemental hereto provided pursuant to Section 2.03. In addition to the right to discharge of the Indenture pursuant to subsection
(a) above, the Issuer, at its option and at any time, by written notice by an officer delivered to the Trustee, may elect to have
all of its obligations discharged with all Outstanding Securities of a series (“Legal Defeasance”), such discharge
to be effective on the date that the conditions set forth in clauses (i) through (iv) and (vi) of Section 10.01(d) are satisfied,
and thereafter the Issuer shall be deemed to have paid and discharged the entire Debt on all the Securities of such a series, and
satisfied all its other obligations under such Securities and this Indenture insofar as such Securities are concerned and this
Indenture shall cease to be of further effect with respect to Securities of such series (except as to (1) rights of registration
of transfer, conversion and exchange of Securities of such series, (2) substitution of apparently mutilated, defaced, destroyed,
lost or stolen Securities, (3) rights of Holders of Securities to receive, solely from the trust fund described in Section 10.01(d)(i),
payments of principal thereof and interest thereon, upon the original stated due dates therefor (but not upon acceleration) and
remaining rights of the Holders to receive, solely from the trust fund described in Section 10.01(d)(i), sinking fund payments,
if any, (4) the rights (including the Trustee’s rights under Section 10.05) and immunities of the Trustee hereunder and the
Trustee’s obligations with respect to the Securities of such series under Sections 10.02 and 10.04 and (5) the obligations
of the Issuer under Section 3.02).

(c) The following subsection shall apply
to the Securities of each series unless specifically otherwise provided in a Board Resolution, Officer’s Certificate or indenture
supplemental hereto provided pursuant to Section 2.03. In addition to the right to discharge of the Indenture pursuant to subsection
(a) and to Legal Defeasance pursuant to subsection (b), above, the Issuer, at its option and at any time, by written notice executed
by an officer delivered to the Trustee, may elect to have its obligations under any covenant contained in this Indenture or in
the Board Resolution or supplemental indenture relating to such series pursuant to Section 2.03 discharged with respect to all
Outstanding Securities of a series, this Indenture and any indentures supplemental to this Indenture with respect to such series
(“Covenant Defeasance”), such discharge to be effective on the date the conditions set forth in clauses (i)
through (iii) and (v) through (vi) of Section 10.01(d) are satisfied, and such Securities shall thereafter be deemed to be not
“Outstanding” for the purposes of any direction, waiver, consent or declaration of Securityholders (and the consequences
of any thereof) in connection with such covenants, but shall continue to be “Outstanding” for all other purposes under
this Indenture. For this purpose, such Covenant Defeasance means that, with respect to the Outstanding Securities of a series,
the Issuer may omit to comply with and shall have no liability in respect of any term, condition or limitation set forth in any
such covenant, whether directly or indirectly, by reason of any reference elsewhere herein to any such covenant or by reason of
reference in any such covenant to any other provision herein or in any other document and such omission to comply shall not constitute
an Event of Default under Section 5.01(c) or otherwise, but except as specified in this Section 10.01(c), the remainder of the
Issuer’s obligations under the Securities of such series, this Indenture, and any indentures supplemental to this Indenture
with respect to such series shall be unaffected thereby.

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(d) The following shall be the conditions
to the application of Legal Defeasance under subsection (b) or Covenant Defeasance under subsection (c) to the Securities of the
applicable series:

(i) the Issuer irrevocably deposits
or causes to be deposited in trust with the Trustee or, at the option of the Trustee, with a trustee satisfactory to the Trustee
and the Company under the terms of an irrevocable trust agreement in form and substance satisfactory to the Trustee, cash or U.S.
Government Obligations that will generate cash sufficient to pay principal of and interest on the Outstanding Securities of such
series to maturity or redemption, as the case may be, and to pay all other amounts payable by it hereunder, provided that (A) the
trustee of the irrevocable trust, if any, shall have been irrevocably instructed to pay such funds or the proceeds of such U.S.
Government Obligations to the Trustee and (B) the Trustee shall have been irrevocably instructed to apply such funds or the proceeds
of such U.S. Government Obligations to (x) the principal and interest on all Securities of such series on the date that such principal
or interest is due and payable and (y) any mandatory sinking fund payments on the day on which such payments are due and payable
in accordance with the terms of the Indenture and the Securities of such series, and the Issuer shall also pay or cause to be paid
all other amounts payable hereunder with respect to such series;

(ii) the Issuer delivers to the Trustee
an Officer’s Certificate stating that all conditions precedent specified herein relating to Legal Defeasance or Covenant
Defeasance, as the case may be, have been complied with, and an Opinion of Counsel to the same effect;

(iii) no Event of Default under subsection
(a), (b), (d) or (e) of Section 5.01 shall have occurred and be continuing, and no event which with notice or lapse of time or
both would become such an Event of Default shall have occurred and be continuing, on the date of such deposit;

(iv) in the event of an election
for Legal Defeasance under subsection (b), the Issuer shall have delivered to the Trustee an Opinion of Counsel stating that (A) the
Issuer has received from, or there has been published by, the Internal Revenue Service a ruling or (B) since the date of this
instrument, there has been a change in the applicable Federal income tax law, in either case (A) or (B) to the effect
that, and based thereon such opinion shall confirm that, the Holders of such Securities will not recognize gain or loss for Federal
income tax purposes as a result of the deposit, defeasance and discharge to be effected with respect to such Securities and will
be subject to Federal income tax on the same amounts, in the same manner and at the same times as would be the case if such deposit,
defeasance and discharge were not to occur;

(v) in the event of an election for
Covenant Defeasance under subsection (c), the Issuer shall have delivered to the Trustee an Opinion of Counsel to the effect
that the Holders of such Securities will not recognize gain or loss for Federal income tax purposes as a result of the deposit
and Covenant Defeasance to be effected with respect to such Securities and will be subject to Federal income tax on the same amount,
in the same manner and at the same times as would be the case if such deposit and Covenant Defeasance were not to occur; and

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(vi) notwithstanding any other provisions
of this subsection (d), such defeasance shall be effected in compliance with any additional or substitute terms, conditions or
limitations which may be imposed on the Issuer pursuant to Section 2.03.

After such irrevocable deposit made pursuant to this Section
10.01(d) and satisfaction of the other conditions set forth in this subsection (d), the Trustee upon request shall execute proper
instruments acknowledging the discharge of the Issuer’s obligations pursuant to this Section 10.01.

Section 10.02 Application by
Trustee of Funds Deposited for Payment of Securities. Subject to Section 10.04, all moneys deposited with the Trustee
(or other trustee) pursuant to Section 10.01 shall be held in trust and applied by it to the payment, either directly or through
any paying agent (including the Issuer acting as its own paying agent), to the Holders of the particular Securities of such series
for the payment or redemption of which such moneys have been deposited with the Trustee, of all sums due and to become due thereon
for principal and interest; but such money need not be segregated from other funds except to the extent required by law.

Section 10.03 Repayment of
Moneys Held by Paying Agent. In connection with the satisfaction and discharge of this Indenture with respect to Securities
of any series, all moneys then held by any paying agent under the provisions of this Indenture with respect to such series of Securities
shall, upon demand of the Issuer, 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 moneys.

Section 10.04 Return of Moneys
Held by Trustee and Paying Agent Unclaimed for Two Years. Any moneys deposited with or paid to the Trustee or any paying
agent for the payment of the principal of, interest on or additional amounts in respect of any Security of any series and not applied
but remaining unclaimed for two years after the date upon which such principal, interest or additional amount shall have become
due and payable, shall be repaid to the Issuer by the Trustee for such series or such paying agent, and the Holder of the Securities
of such series shall thereafter look only to the Issuer for any payment which such Holder may be entitled to collect, and all liability
of the Trustee or any paying agent with respect to such moneys shall thereupon cease.

Section 10.05 Indemnity for
U.S. Government Obligations. The Issuer shall pay and indemnify the Trustee against any tax, fee or other charge imposed on
or assessed against the U.S. Government Obligations deposited pursuant to Section 10.01 or the principal or interest received in
respect of such obligations.

ARTICLE 11

MISCELLANEOUS PROVISIONS

Section 11.01 No Recourse.
No recourse under or upon any obligation, covenant or agreement of this Indenture, or of any Security, or for any claim based
thereon or otherwise in respect thereof, shall be had against any incorporator, stockholder, officer or

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director, past, present or future
as such, of the Issuer or of any predecessor or successor corporation, either directly or through the Issuer or any such predecessor
or successor corporation, whether by virtue of any constitution, statute or rule of law, or by the enforcement of any assessment
or penalty or otherwise; it being expressly understood that this Indenture and the obligations issued hereunder are solely corporate
obligations, and that no such personal liability whatever shall attach to, or is or shall be incurred by, the incorporators, stockholders,
officers or directors as such, of the Issuer or of any predecessor or successor corporation, or any of them, because of the creation
of the indebtedness hereby authorized, or under or by reason of the obligations, covenants or agreements contained in this Indenture
or in any of the Securities or implied therefrom; and that any and all such personal liability of every name and nature, either
at common law or in equity or by constitution or statute, of, and any and all such rights and claims against, every such incorporator,
stockholder, officer or director as such, because of the creation of the indebtedness hereby authorized, or under or by reason
of the obligations, covenants or agreements contained in this Indenture or in any of the Securities or implied therefrom, are hereby
expressly waived and released as a condition of, and as a consideration for, the execution of this Indenture and the issuance of
such Securities.

Section 11.02 Provisions of
Indenture for the Sole Benefit of Parties and Holders of Securities. Nothing in this Indenture or in the Securities,
expressed or implied, shall give or be construed to give to any person, firm or corporation, other than the parties hereto and
their successors and the Holders of the Securities any legal or equitable right, remedy or claim under this Indenture or under
any covenant or provision herein contained, all such covenants and provisions being for the sole benefit of the parties hereto
and their successors and of the Holders of the Securities.

Section 11.03 Successors and
Assigns of Issuer Bound by Indenture. All the covenants, stipulations, promises and agreements contained in this Indenture
by or on behalf of the Issuer shall bind its successors and assigns, whether so expressed or not.

Section 11.04 Notices and
Demands on Issuer, Trustee and Holders of Securities. Any notice or demand which by any provision of this
Indenture is required or permitted to be given or served by the Trustee or by the Holders of Securities to or on the Issuer
may be given or served by being deposited postage prepaid, first-class mail (except as otherwise specifically provided
herein) addressed (until another address of the Issuer is filed by the Issuer with the Trustee) to Franklin Street Properties
Corp., 401 Edgewater Place, Suite 200 Wakefield, MA 01880, Attn: Chief Financial Officer. Any notice, direction, request
or demand by the Issuer or any Holder of Securities to or upon the Trustee shall be deemed to have been sufficiently given or
made, for all purposes, if given or made at _______, ________, Attn: _______.

Where this Indenture provides for notice
to Holders of Securities, such notice shall be sufficiently given (unless otherwise herein expressly provided) if in writing and
mailed, first-class postage prepaid, to each Holder entitled thereto, at his or her last address as it appears in the Security
register. In case, by reason of the suspension of or irregularities in regular mail service, it shall be impracticable to mail
notice of any event to Holders of Securities when said notice is required to be given pursuant to any provision of this Indenture
or of the Securities, then any manner of giving such notice as shall be satisfactory to the Trustee shall be deemed to be a sufficient
giving of such notice.

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In case, by reason of the suspension
of or irregularities in regular mail service, it shall be impracticable to mail notice to the Issuer when such notice is required
to be given pursuant to any provision of this Indenture, then any manner of giving such notice as shall be satisfactory to the
Trustee shall be deemed to be a sufficient giving of such notice.

Neither the failure to give notice, nor
any defect in any notice so given, to any particular Holder of a Security shall affect the sufficiency of such notice with respect
to other Holders of Securities given as provided above.

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.

Section 11.05 Officer’s
Certificates and Opinions of Counsel; Statements to Be Contained Therein. Upon any application or demand by the Issuer
to the Trustee to take any action under any of the provisions of this Indenture, the Issuer shall furnish to the Trustee an Officer’s
Certificate stating that all conditions precedent provided for in this Indenture relating to the proposed action have been complied
with and an Opinion of Counsel stating that in the opinion of such counsel all such conditions precedent have been complied with,
except that in the case of any such application or demand as to which the furnishing of such documents is specifically required
by any provision of this Indenture relating to such particular application or demand, no additional certificate or opinion need
be furnished.

Each certificate or opinion provided
for in this Indenture and delivered to the Trustee with respect to compliance with a condition or covenant provided for in this
Indenture shall include (a) a statement that the person making such certificate or opinion has read such covenant or condition,
(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 such person, he or she has made such examination
or investigation as is necessary to enable him or her 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 or not, in the opinion of such person, such condition or covenant has
been complied with.

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

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Any certificate, statement or opinion
of an officer of the Issuer or of counsel may be based, insofar as it relates to accounting matters, upon a certificate or opinion
of or representations by an accountant or firm of accountants in the employ of the Issuer, unless such officer or counsel, as the
case may be, knows that the certificate or opinion or representations with respect to the accounting matters upon which his or
her certificate, statement or opinion may be based as aforesaid are erroneous, or in the exercise of reasonable care should know
that the same are erroneous.

Any certificate or opinion of any independent
firm of public accountants filed with and directed to the Trustee shall contain a statement that such firm is independent.

Section 11.06 Payments Due
on Saturdays, Sundays and Holidays. If the date of maturity of interest on or principal of the Securities of any series or
the date fixed for redemption or repayment of any such Security, or the last day on which a Holder has the right to convert any
Security, shall not be a Business Day, then payment of interest or principal, or any conversion, need not be made on such date,
but may be made on the next succeeding Business Day with the same force and effect as if made on the date of maturity or the date
fixed for redemption or on such last day for conversion, and no interest shall accrue for the period after such date.

Section 11.07 Conflict of Any
Provision of Indenture With Trust Indenture Act of 1939. If and to the extent that any provision of this Indenture limits,
qualifies or conflicts with another provision included in this Indenture by operation of Sections 310 to 317, inclusive, of the
Trust Indenture Act of 1939, such incorporated provision shall control.

Section 11.08 New York Law
to Govern. This Indenture and each Security shall be deemed to be a contract under the laws of the State of New York, and for
all purposes shall be governed by and construed in accordance with the laws of such State without regard to any principle of conflict
of laws that would require or permit the application of the laws of any other jurisdiction, except as may otherwise be required
by mandatory provisions of law.

Section 11.09 Counterparts.
This Indenture may be executed in any number of counterparts, each of which shall be an original; but such counterparts shall
together constitute but one and the same instrument.

Section 11.10 Effect of Headings.
The Article and Section headings herein and the Table of Contents are for convenience only and shall not affect the construction
hereof.

Section 11.11 Actions by Successor.
Any act or proceeding by any provision of this Indenture authorized or required to be done or performed by any board of directors
or its equivalent, committee or officer of the Issuer shall and may be done and performed with like force and effect by the corresponding
board, committee or officer of any corporation that shall at the time be the lawful successor of the Issuer.

Section 11.12 Severability.
In case any one or more of the provisions contained in this Indenture or in the Securities of any series shall for any reason be
held to be invalid, illegal or unenforceable in any respect, such invalidity, illegality or unenforceability shall not affect any
other provisions of this Indenture or of such Securities, but this Indenture and such Securities shall be construed as if such
invalid or illegal or unenforceable provision had never been contained herein or therein.

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ARTICLE 12

REDEMPTION OF SECURITIES AND SINKING FUNDS

Section 12.01 Applicability
of Article. The provisions of this Article shall be applicable to the Securities of any series which are redeemable before
their maturity or to any sinking fund for the retirement of Securities of a series, except as otherwise specified, as contemplated
by Section 2.03 for Securities of such series.

Section 12.02 Notice of Redemption;
Partial Redemptions. Notice of redemption to the Holders of Securities of any series to be redeemed as a whole or in part at
the option of the Issuer shall be given by mailing notice of such redemption by first class mail, postage prepaid, at least 30
days and not more than 60 days prior to the date fixed for redemption to such Holders of Securities of such series at their last
addresses as they shall appear upon the Security register. Any notice which is given in the manner herein provided shall be conclusively
presumed to have been duly given, whether or not the Holder receives the notice. Failure to give notice or any defect in the notice
to the Holder of any Security of a series designated for redemption as a whole or in part shall not affect the validity of the
proceedings for the redemption of any other Security of such series.

The notice of redemption to each such
Holder shall specify the principal amount of each Security of such series held by such Holder to be redeemed, the date fixed for
redemption, the redemption price, the place or places of payment, that payment will be made upon presentation and surrender of
such Securities, that such redemption is pursuant to the mandatory or optional sinking fund, or both, if such be the case, that
interest accrued to the date fixed for redemption will be paid as specified in such notice and that on and after said date interest
thereon or on the portions thereof to be redeemed will cease to accrue and shall also specify, if applicable, the conversion price
then in effect and the date on which the right to convert such Securities or the portions thereof to be redeemed will expire. In
case any Security of a series is to be redeemed in part only, the notice of redemption shall state the portion of the principal
amount thereof to be redeemed and shall state that on and after the date fixed for redemption, upon surrender of such Security,
a new Security or Securities of such series in principal amount equal to the unredeemed portion thereof will be issued.

The notice of redemption of Securities
of any series to be redeemed at the option of the Issuer shall be given by the Issuer or, at the Issuer’s request, by the
Trustee in the name and at the expense of the Issuer.

On or before the redemption date specified
in the notice of redemption given as provided in this Section, the Issuer will deposit with the Trustee or with one or more paying
agents (or, if the Issuer is acting as its own paying agent, set aside, segregate and hold in trust as provided in Section 3.04)
an amount of money sufficient to redeem on the redemption date all the Securities of such series so called for redemption (other
than those Securities theretofore surrendered for conversion into Common Stock in accordance with their terms) at the appropriate
redemption price, together with accrued interest to the date fixed for redemption. If any Security called for redemption is converted
pursuant hereto and in accordance with the terms thereof, any money deposited with the Trustee or any paying agent or so segregated
and held in trust for the redemption of such Security shall be paid to the Issuer upon the Issuer’s request, or, if then
held

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by the Issuer, shall be discharged from
such trust. The Issuer will deliver to the Trustee at least 10 days prior to the date the notice required to be delivered to the
Holders is to be sent (unless a shorter time period shall be acceptable to the Trustee) an Officer’s Certificate (which need
not comply with Section 11.05) stating the aggregate principal amount of Securities to be redeemed. In case of a redemption at
the election of the Issuer prior to the expiration of any restriction on such redemption, the Issuer shall deliver to the Trustee,
prior to the giving of any notice of redemption to Holders pursuant to this Section, an Officer’s Certificate stating that
such restriction has been complied with.

If less than all the Securities of a
series are to be redeemed, the Trustee shall select, in such manner as it shall deem appropriate and fair, Securities of such series
to be redeemed in whole or in part. Securities may be redeemed in part in multiples equal to the minimum authorized denomination
for Securities of such series or any multiple thereof. The Trustee shall promptly notify the Issuer in writing of the Securities
of such series selected for redemption and, in the case of any Securities of such series selected for partial redemption, the principal
amount thereof to be redeemed. For all purposes of this Indenture, unless the context otherwise requires, all provisions relating
to the redemption of Securities of any series shall relate, in the case of any Security redeemed or to be redeemed only in part,
to the portion of the principal amount of such Security which has been or is to be redeemed. If any Security selected for partial
redemption is surrendered for conversion after such selection, the converted portion of such Security shall be deemed (so far as
may be possible) to be the portion selected for redemption.

Section 12.03 Payment of Securities
Called for Redemption. If notice of redemption has been given as above provided, the Securities or portions of Securities specified
in such notice shall become due and payable on the date and at the place stated in such notice at the applicable redemption price,
together with interest accrued to the date fixed for redemption, and on and after said date (unless the Issuer shall default in
the payment of such Securities at the redemption price, together with interest accrued to said date) interest on the Securities
or portions of Securities so called for redemption shall cease to accrue, and such Securities shall cease from and after the date
fixed for redemption to be convertible into Common Stock (to the extent otherwise convertible in accordance with their terms),
if applicable, and cease to be entitled to any benefit or security under this Indenture, and except as provided in the paragraph
below, the Holders thereof shall have no right in respect of such Securities except the right to receive the redemption price thereof
and unpaid interest to the date fixed for redemption. On presentation and surrender of such Securities at a place of payment specified
in said notice, said Securities or the specified portions thereof shall be paid and redeemed by the Issuer at the applicable redemption
price, together with interest accrued thereon to the date fixed for redemption; provided, that payment of interest becoming
due on or prior to the date fixed for redemption shall be payable to the Holders of such Securities registered as such on the relevant
record date subject to the terms and provisions of Sections 2.03 and 2.07 hereof.

If any Security called for redemption
shall not be so paid upon surrender thereof for redemption, the principal shall, until paid or duly provided for, bear interest
from the date fixed for redemption at the rate of interest or Yield to Maturity (in the case of an Original Issue Discount Security)
borne by such Security and, if applicable, such Security shall remain convertible into Common Stock until the principal of such
Security shall have been paid or duly provided for.

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Upon presentation of any Security redeemed
in part only, the Issuer shall execute and the Trustee shall authenticate and deliver to or on the order of the Holder thereof,
at the expense of the Issuer, a new Security or Securities of such series, of authorized denominations, in principal amount equal
to the unredeemed portion of the Security so presented.

Section 12.04 Exclusion of
Certain Securities from Eligibility for Selection for Redemption. Securities shall be excluded from eligibility for
selection for redemption if they are identified by registration and certificate number in an Officer’s Certificate delivered
to the Trustee at least 40 days prior to the last date on which notice of redemption may be given as being owned of record and
beneficially by, and not pledged or hypothecated by either (a) the Issuer or (b) an entity specifically identified in such written
statement as directly or indirectly controlling or controlled by or under direct or indirect common control with the Issuer.

Section 12.05 Mandatory and
Optional Sinking Funds. The minimum amount of any sinking fund payment provided for by the terms of the Securities of any series
is herein referred to as a “mandatory sinking fund payment”, and any payment in excess of such minimum amount
provided for by the terms of the Securities of any series is herein referred to as an “optional sinking fund payment”.
The date on which a sinking fund payment is to be made is herein referred to as the “sinking fund payment date”.

In lieu of making all or any part of
any mandatory sinking fund payment with respect to any series of Securities in cash, the Issuer may at its option (a) deliver to
the Trustee Securities of such series theretofore purchased or otherwise acquired (except upon redemption pursuant to the mandatory
sinking fund) by the Issuer or receive credit for Securities of such series (not previously so credited) theretofore purchased
or otherwise acquired (except as aforesaid) by the Issuer and delivered to the Trustee for cancellation pursuant to Section 2.10
and, if applicable, receive credit for Securities (not previously so credited) converted into Common Stock and so delivered to
the Trustee for cancellation, (b) receive credit for optional sinking fund payments (not previously so credited) made pursuant
to this Section, or (c) receive credit for Securities of such series (not previously so credited) redeemed by the Issuer through
any optional redemption provision contained in the terms of such series. Securities so delivered or credited shall be received
or credited by the Trustee at the sinking fund redemption price specified in such Securities.

On or before the 60th day next preceding
each sinking fund payment date for any series, the Issuer will deliver to the Trustee an Officer’s Certificate (which need
not contain the statements required by Section 11.05) (a) specifying the portion of the mandatory sinking fund payment to be satisfied
by payment of cash and the portion to be satisfied by credit of Securities of such series and the basis for such credit, (b) stating
that none of the Securities of such series for which credit will be taken has theretofore been so credited, (c) stating that no
defaults in the payment of interest or Events of Default with respect to such series have occurred (which have not been waived
or cured) and are continuing and (d) stating whether or not the Issuer intends to exercise its right to make an optional sinking
fund payment with respect to such series and, if so, specifying the amount of such optional sinking fund payment which the Issuer
intends to pay on or before the next succeeding sinking fund payment date. Any Securities of such series to be credited and required
to be delivered to the Trustee in order for the Issuer to be entitled to credit

    	47

    	 

    

therefor as aforesaid which have not theretofore
been delivered to the Trustee shall be delivered for cancellation pursuant to Section 2.10 to the Trustee with such Officer’s
Certificate (or reasonably promptly thereafter if acceptable to the Trustee). Such Officer’s Certificate shall be irrevocable
and upon its receipt by the Trustee the Issuer shall become unconditionally obligated to make all the cash payments or payments
therein referred to, if any, on or before the next succeeding sinking fund payment date. Failure of the Issuer, on or before any
such 60th day, to deliver such Officer’s Certificate and Securities specified in this paragraph, if any, shall not constitute
a default but shall constitute, on and as of such date, the irrevocable election of the Issuer that the mandatory sinking fund
payment for such series due on the next succeeding sinking fund payment date shall be paid entirely in cash without the option
to deliver or credit Securities of such series in respect thereof.

If the sinking fund payment or payments
(mandatory or optional or both) to be made in cash on the next succeeding sinking fund payment date plus any unused balance of
any preceding sinking fund payments made in cash shall exceed $50,000 (or the equivalent thereof in any Foreign Currency or a lesser
sum in Dollars or in any Foreign Currency if the Issuer shall so request) with respect to the Securities of any particular series,
such cash shall be applied on the next succeeding sinking fund payment date to the redemption of Securities of such series at the
sinking fund redemption price together with accrued interest to the date fixed for redemption. If such amount shall be $50,000
(or the equivalent thereof in any Foreign Currency) or less and the Issuer makes no such request then it shall be carried over
until a sum in excess of $50,000 (or the equivalent thereof in any Foreign Currency) is available, which delay in accordance with
this paragraph shall not be a default or breach of the obligation to make such payment. The Trustee shall select, in the manner
provided in Section 12.02, for redemption on such sinking fund payment date a sufficient principal amount of Securities of such
series to which such cash may be applied, as nearly as may be, and shall (if requested in writing by the Issuer) inform the Issuer
of the serial numbers of the Securities of such series (or portions thereof) so selected. The Trustee, in the name and at the expense
of the Issuer (or the Issuer, if it shall so request the Trustee in writing), shall cause notice of redemption of the Securities
of such series to be given in substantially the manner provided in Section 12.02 (and with the effect provided in Section 12.03)
for the redemption of Securities of such series in part at the option of the Issuer. The amount of any sinking fund payments not
so applied or allocated to the redemption of Securities of such series shall be added to the next cash sinking fund payment for
such series and, together with such payment, shall be applied in accordance with the provisions of this Section. Any and all sinking
fund moneys held on the stated maturity date of the Securities of any particular series (or earlier, if such maturity is accelerated),
which are not held for the payment or redemption of particular Securities of such series, shall be applied, together with other
moneys, if necessary, sufficient for the purpose, to the payment of the principal of, and interest on, the Securities of such series
at maturity. The Issuer’s obligation to make a mandatory or optional sinking fund payment shall automatically be reduced
by an amount equal to the sinking fund redemption price allocable to any Securities or portions thereof called for redemption pursuant
to the preceding paragraph on any sinking fund payment date and converted into Common Stock in accordance with the terms of such
Securities; provided that, if the Trustee is not the conversion agent for the Securities, the Issuer or such conversion
agent shall give the Trustee written notice on or prior to the date fixed for redemption of the principal amount of Securities
or portions thereof so converted.

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On or before each sinking fund payment
date, the Issuer shall pay to the Trustee in cash or shall otherwise provide for the payment of all interest accrued to the date
fixed for redemption on Securities to be redeemed on such sinking fund payment date.

The Trustee shall not redeem or cause
to be redeemed any Securities of a series with sinking fund moneys or give any notice of redemption of Securities for such series
by operation of the sinking fund during the continuance of a default in payment of interest on such Securities or of any Event
of Default except that, where the mailing of notice of redemption of any Securities shall theretofore have been made, the Trustee
shall redeem or cause to be redeemed such Securities, provided that it shall have received from the Issuer a sum sufficient for
such redemption. Except as aforesaid, any moneys in the sinking fund for such series at the time when any such default or Event
of Default shall occur, and any moneys thereafter paid into the sinking fund, shall, during the continuance of such default or
Event of Default, be deemed to have been collected under Article 5 and held for the payment of all such Securities. In case such
Event of Default shall have been waived as provided in Section 5.10, or the default cured on or before the 60th day preceding the
sinking fund payment date in any year, such moneys shall thereafter be applied on such sinking fund payment date in accordance
with this Section to the redemption of such Securities.

 

[Signature pages
follow]

    	49

    	 

    

IN WITNESS WHEREOF, the parties hereto
have caused this Indenture to be duly executed as of _____________.

	FRANKLIN STREET PROPERTIES CORP.
	By:	 
	 	Name:
	 	Title:

 

	Attest:
	By:	 
	 	Name:
	 	Title:
	 	 
	 	 
	 	 
	____________, Trustee

 

	By:	 
	 	Name:
	 	Title:

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