Document:

Form of Guarantee Agreement dated as of August 25, 2003

 EXHIBIT 4.13 
  
  
  
  
  
  
  
  
  
  
 Guarantee Agreement 
  
  
 between 
  
  
 SOUTHWEST GAS CORPORATION 
  
  
 (as Guarantor) 
  
  
 and 
  
  
 BNY MIDWEST TRUST COMPANY 
  
  
 (as Guarantee Trustee) 
  
  
 Dated as of 
  
  
 August 25, 2003. 
  
  
  
  
  
  

 CROSS-REFERENCE TABLE* 
  

	 Section of
 Trust Indenture Act

of 1939, as amended

	  	 Section of
 Guarantee
 Agreement

		
	 310(a)
	  	4.01(a)
	 310(b)
	  	4.01(c)
	 310(c)
	  	Inapplicable
	 311(a)
	  	2.01(d)
	 311(b)
	  	2.01(d)
	 311(c)
	  	Inapplicable
	 312(a)
	  	2.01(c)
	 312(b)
	  	2.01(d)
	 313
	  	2.02
	 314(a)
	  	2.04
	 314(b)
	  	Inapplicable
	 314(c)
	  	2.04
	 314(d)
	  	Inapplicable
	 314(e)
	  	1.01, 2.05, 3.02
	 314(f)
	  	2.01, 3.02
	 315(a)
	  	3.01(d)
	 315(b)
	  	2.07
	 315(c)
	  	3.01
	 315(d)
	  	3.01(d)
	 316(a)
	  	1.01, 2.06, 5.04
	 316(b)
	  	5.03
	 316(c)
	  	8.02
	 317(a)
	  	Inapplicable
	 317(b)
	  	Inapplicable
	 318(a)
	  	2.01(b)
	 318(b)
	  	2.01
	 318(c)
	  	2.01(a)

  

	*	 	This Cross-Reference Table does not constitute part of the Guarantee Agreement and shall not affect the interpretation of any of its terms or provisions. 

 

 (i) 

 TABLE OF CONTENTS 
  

	 	 	 	  	Page
			
	 ARTICLE I
	 	DEFINITIONS	  	1
		
	 Section 1.01.        Definitions 
	  	1
			
	 ARTICLE II
	 	TRUST INDENTURE ACT	  	3
		
	 Section 2.01.        Trust Indenture Act; Application 
	  	3
	 Section 2.02.        Reports by Guarantee Trustee 
	  	4
	 Section 2.03.        Periodic Reports to Guarantee Trustee

	  	4
	 Section 2.04.        Evidence of Compliance with Conditions Precedent

	  	4
	 Section 2.05.        Events of Default; Waiver 
	  	4
	 Section 2.06.        Event of Default; Notice 
	  	4
			
	 ARTICLE III
	 	POWERS, DUTIES AND RIGHTS OF THE GUARANTEE TRUSTEE	  	5
		
	 Section 3.01.        Powers and Duties of the Guarantee Trustee

	  	5
	 Section 3.02.        Certain Rights of Guarantee Trustee. 
	  	6
	 Section 3.03.        Indemnity 
	  	7
			
	 ARTICLE IV
	 	GUARANTEE TRUSTEE	  	8
		
	 Section 4.01.        Guarantee Trustee; Eligibility 
	  	8
	 Section 4.02.        Appointment, Removal and Resignation of the Guarantee
Trustee 
	  	8
			
	 ARTICLE V
	 	GUARANTEE	  	9
		
	 Section 5.01.        Guarantee 
	  	9
	 Section 5.02.        Waiver of Notice and Demand 
	  	9
	 Section 5.03.        Obligations Not Affected 
	  	9
	 Section 5.04.        Rights of Holders 
	  	10
	 Section 5.05.        Guarantee of Payment 
	  	10
	 Section 5.06.        Subrogation 
	  	10
	 Section 5.07.        Independent Obligations 
	  	11
			
	 ARTICLE VI
	 	COVENANTS AND SUBORDINATION	  	11
		
	 Section 6.01.        Ranking 
	  	11
	 Section 6.02.        Limitation of Transactions 
	  	11
			
	 ARTICLE VII
	 	TERMINATION	  	12
		
	 Section 7.01.        Termination 
	  	12

  

 (ii) 

 TABLE OF CONTENTS 
 (continued) 
  

	 	 	 	  	Page
			
	 ARTICLE VIII
	 	MISCELLANEOUS	  	12
		
	 Section 8.01.        Successors and Assigns 
	  	12
	 Section 8.02.        Amendments 
	  	12
	 Section 8.03.        Notices 
	  	12
	 Section 8.04.        Benefit 
	  	13
	 Section 8.05.        Interpretation 
	  	13
	 Section 8.06.        Governing Law 
	  	14

  

 (iii) 

 GUARANTEE AGREEMENT 
  
 This GUARANTEE AGREEMENT, dated as of August 25, 2003, is executed and delivered by Southwest Gas Corporation, a California
corporation (the “Guarantor”), to BNY Midwest Trust Company, a trust company duly organized and existing under the laws of the State of Illinois, as trustee (the “Guarantee Trustee”), for the benefit of the Holders (as defined
herein) from time to time of the Preferred Trust Securities (as defined herein) of Southwest Gas Capital II, a Delaware statutory trust (the “Issuer”). 
  
 WHEREAS, pursuant to an Amended and Restated Trust Agreement for Southwest Gas Capital II (the “Trust Agreement”),
dated as of August 25, 2003 among the Trustees named therein, the Guarantor, as Sponsor, and the Holders from time to time of undivided beneficial interests in the assets of the Issuer, the Issuer is issuing $100,000,000 aggregate liquidation amount
of its 7.70% Preferred Trust Securities (liquidation amount $25 per preferred trust security) (the “Preferred Trust Securities”) representing undivided beneficial interests in the assets of the Issuer and having the terms set forth in the
Trust Agreement; 
  
 WHEREAS, the Preferred Trust Securities will
be issued by the Issuer and the proceeds thereof, together with the proceeds from the sale by the Issuer of its Common Trust Securities, will be used to purchase the Trust Debt Securities (as defined in the Trust Agreement) of the Guarantor which
will be deposited with BNY Midwest Trust Company, as Property Trustee under the Trust Agreement, as Trust Property (as defined in the Trust Agreement); and 
  
 WHEREAS, as incentive for the Holders to purchase the Preferred Trust Securities, the Guarantor desires irrevocably and unconditionally to agree, to the
extent set forth herein, to pay to the Holders of the Preferred Trust Securities the Guarantee Payments (as defined herein) and to make certain other payments on the terms and conditions set forth herein. 
  
 NOW, THEREFORE, in consideration of the purchase by each Holder of the
Preferred Trust Securities, which purchase the Guarantor hereby agrees shall benefit the Guarantor, the Guarantor executes and delivers this Guarantee Agreement for the benefit of the Holders from time to time of the Preferred Trust Securities.

  
 ARTICLE I 
 DEFINITIONS 
  
 Section 1.01.    Definitions.  As used in this Guarantee Agreement, each of the terms set forth below shall,
unless the context otherwise requires, have the following meaning. Each capitalized or otherwise defined term used but not otherwise defined herein shall have the meaning assigned to such terms in the Trust Agreement as in effect on the date hereof.

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

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 “Common Trust Securities” means the securities representing undivided beneficial interests in
the assets of the Issuer and having the rights provided therefor in the Trust Agreement. 
  
 “Event of Default” means a default by the Guarantor on any of its payment or other obligations under this Guarantee Agreement; provided, that except with respect to a default resulting from a failure to pay
any Guarantee Payment, the Guarantor shall have received notice of default and shall not have cured such default within 60 days after receipt of such notice. 
  
 “Guarantee Payments” means the following payments or Distributions (as defined in the Trust Agreement), without duplication, with respect to the
Preferred Trust Securities, to the extent not paid or made by or on behalf of the Issuer: (i) any accumulated and unpaid Distributions required to be paid on the Preferred Trust Securities, to the extent the Issuer shall have funds available
therefor, (ii) the redemption price, including all accumulated and unpaid Distributions to the date of redemption (the “Redemption Price”), with respect to the Preferred Trust Securities called for redemption by the Issuer, to the extent
the Issuer shall have funds available therefor, and (iii) upon a voluntary or involuntary termination, winding-up or liquidation of the Issuer, unless the Trust Debt Securities are distributed to the Holders, the lesser of (a) the aggregate of the
liquidation amount of $25 per Preferred Trust Security plus accumulated and unpaid Distributions on the Preferred Trust Securities to the date of payment, to the extent the Issuer shall have funds available therefor and (b) the amount of assets of
the Issuer remaining available for distribution to the Holders in liquidation of the Issuer (in either case, the “Liquidation Distribution”). If an Event of Default (as defined in the Indenture) has occurred and is continuing, the rights
of the holders of the Common Trust Securities to receive payments under the Guarantor’s guarantee agreement with respect thereto are subordinated to the rights of holders of Preferred Trust Securities to receive Guarantee Payments under this
Guarantee Agreement. 
  
 “Guarantee Trustee” means BNY
Midwest Trust Company, until a Successor Guarantee Trustee (as defined below) has been appointed and has accepted such appointment pursuant to the terms of this Guarantee Agreement and thereafter means each such Successor Guarantee Trustee.

  
 “Holder” means a Person in whose name a Preferred
Trust Security is registered in the Securities Register; provided, however, that in determining whether the holders of the requisite percentage of Preferred Trust Securities have given any request, notice, consent or waiver hereunder,
“Holder” shall not include the Guarantor, the Guarantee Trustee or any Affiliate of the Guarantor or the Guarantee Trustee. 
  
 “Indenture” means the Indenture dated as of August 25, 2003, between Southwest Gas Corporation and BNY Midwest Trust Company, as trustee
thereunder. 
  
 “List of Holders” has the meaning
specified in Section 2.01(c). 
  
 “Majority in liquidation
amount of the Preferred Trust Securities” means, except as provided by the Trust Indenture Act, a vote by the Holders, of more than 50% of the aggregate liquidation amount of all then outstanding Preferred Trust Securities issued by the Issuer.

  

 2 

 “Officers’ Certificate” means a certificate signed by the Chief Executive Officer, any
Vice President, the Chief Financial Officer, any Treasurer, any Assistant Treasurer, the Secretary or any Assistant Secretary of the Guarantor. 
  
 “Person” means any individual, corporation, partnership, limited liability company, joint venture, association, joint-stock company, trust,
unincorporated organization, government or any agency or political subdivision thereof or any other entity. 
  
 “Responsible Officer” means, with respect to the Guarantee Trustee, any Vice President, any Assistant Vice President, any Trust Officer or
Assistant Trust Officer or any other officer of the Corporate Trust Department of the Guarantee Trustee customarily performing functions similar to those performed by any of the above designated officers and also means, with respect to a particular
corporate trust matter, any other officer to whom such matter is referred because of that officer’s knowledge of and familiarity with the particular subject. 
  
 “Senior Indebtedness” means Senior Indebtedness as defined in the Indenture. 
  
 “Successor Guarantee Trustee” means a successor Guarantee Trustee
possessing the qualifications to act as Guarantee Trustee under Section 4.01. 
  
 “Trust Indenture Act” means the Trust Indenture Act of 1939 as in force at the date as of which this instrument was executed; provided, however, that in the event the Trust Indenture Act of 1939 is amended
after such date, “Trust Indenture Act” means, to the extent required by any such amendment, the Trust Indenture Act of 1939, as so amended. 
  
 ARTICLE II 
 TRUST INDENTURE ACT

  
 Section 2.01.    Trust Indenture
Act; Application. 
  
 (a)    This
Guarantee Agreement is subject to the provisions of the Trust Indenture Act that are required to be part of this Guarantee Agreement and shall, to the extent applicable, be governed by such provisions. 
  
 (b)    If and to the extent that any provision of this
Guarantee Agreement limits, qualifies or conflicts with the duties imposed by Sections 310 to 317, inclusive, of the Trust Indenture Act, such imposed duties shall control. 
  
 (c)    The Guarantor shall furnish or cause to be furnished to the Guarantee Trustee (i) semiannually,
on or before June 30 and December 31 of each year, a list, in such form as the Guarantee Trustee may reasonably require, of the names and addresses of the Holders (“List of Holders”) as of a date not more than 15 days prior to the delivery
thereof, and (ii) at such other times as the Guarantee Trustee may request in writing, within 30 days after the receipt by the Guarantor of any such request, a List of Holders as of a date not more than 15 days prior to the time such list is
furnished, in each case to the extent such information is in the possession or control of the Guarantor and is not identical to a previously supplied List of Holders or has not otherwise been received by the Guarantee Trustee in its capacity as
such. The Guarantee Trustee may destroy any List of Holders previously given to it on receipt of a new List of Holders. 
  

 3 

 (d) The Guarantee Trustee shall comply with its obligations under Sections 311(a), Section 311(b) and
Section 312(b) of the Trust Indenture Act. 
  
 Section
2.02.    Reports by Guarantee Trustee.  Within 60 days after December 31 of each year, the Guarantee Trustee shall provide to the Holders such reports as are required by Section 313 of the Trust
Indenture Act, if any, in the form and in the manner provided by Section 313 of the Trust Indenture Act. The Guarantee Trustee shall also comply with the requirements of Section 313(d) of the Trust Indenture Act. 
  
 Section 2.03.    Periodic Reports to
Guarantee Trustee.  The Guarantor shall provide to the Guarantee Trustee, the Securities and Exchange Commission and the Holders such documents, reports and information, if any, as required by Section 314 of the Trust Indenture Act
and the compliance certificate required by Section 314 of the Trust Indenture Act in the form and manner and at the times required by Section 314 of the Trust Indenture Act. 
  
 Section 2.04.    Evidence of Compliance with Conditions Precedent.  The
Guarantor shall provide to the Guarantee Trustee such evidence of compliance with such conditions precedent, if any, provided for in this Guarantee Agreement that relate to any of the matters set forth in Section 314(c) of the Trust Indenture Act.
Each Officers’ Certificate and Opinion of Counsel delivered with respect to compliance with a condition or covenant provided for in this Guarantee Agreement shall include: 
  
 (a)    a statement that each officer signing the Officers’ Certificate or Opinion of Counsel has
read the covenant or condition and the definition relating thereto; 
  
 (b)    a brief statement of the nature and scope of the examination or investigation undertaken by each officer in rendering the Officers’ Certificate or Opinion of Counsel and upon which the statements contained
therein are based; 
  
 (c)    a statement that
each such officer has made such examination or investigation as, in such officer’s opinion, is necessary to enable such officer to express an informed opinion as to whether or not such covenant or condition has been complied with; and

  
 (d)    a statement as to whether, in the
opinion of each such officer, such condition or covenant has been complied with. 
  
 Section 2.05.    Events of Default; Waiver.  The Holders of a Majority in liquidation amount of the Preferred Trust Securities may, by vote, on behalf of the Holders,
waive any past Event of Default and its consequences. Upon such waiver, any such Event of Default shall cease to exist, and any Event of Default arising therefrom shall be deemed to have been cured, for every purpose of this Guarantee Agreement, but
no such waiver shall extend to any subsequent or other default or Event of Default or impair any right consequent therefrom. 
  
 Section 2.06.    Event of Default; Notice. 
  
 (a)    The Guarantee Trustee shall, within 90 days after the occurrence of an Event of Default, transmit
by mail, first class postage prepaid, to the Holders, notices of all Events of Default known to the Guarantee Trustee, unless such defaults have been cured before 
  

 4 

 the giving of such notice, provided, that, except in the case of a default in the payment of a Guarantee Payment, the
Guarantee 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 and/or Responsible Officers of the Guarantee Trustee in good faith determines that
the withholding of such notice is in the interests of the Holders. 
  
 (b)    The Guarantee Trustee shall not be deemed to have knowledge of any Event of Default unless the Guarantee Trustee shall have received written notice, or a Responsible Officer charged with the administration of the
Trust Agreement shall have obtained written notice, of such Event of Default. 
  
 ARTICLE III 
 POWERS, DUTIES AND RIGHTS OF THE GUARANTEE TRUSTEE 
  
 Section 3.01.    Powers and Duties of the Guarantee
Trustee. 
  
 (a)    This Guarantee
Agreement shall be held by the Guarantee Trustee for the benefit of the Holders, and the Guarantee Trustee shall not transfer this Guarantee Agreement to any Person except a Holder exercising his or her rights pursuant to Section 5.04(iv) or to a
Successor Guarantee Trustee on acceptance by such Successor Guarantee Trustee of its appointment to act as Successor Guarantee Trustee. The right, title and interest of the Guarantee Trustee shall automatically vest in any Successor Guarantee
Trustee upon acceptance by such Successor Guarantee Trustee of its appointment hereunder and such vesting and cessation of title shall be effective whether or not conveyancing documents have been executed and delivered pursuant to the appointment of
such Successor Guarantee Trustee. 
  
 (b)    If an Event of Default has occurred and is continuing, the Guarantee Trustee shall enforce this Guarantee Agreement for the benefit of the Holders. 
  
 (c)    The Guarantee Trustee, before the occurrence of any Event of Default and after the curing of all
Events of Default that may have occurred, shall undertake to perform only such duties as are specifically set forth in this Guarantee Agreement, and no implied covenants shall be read into this Guarantee Agreement against the Guarantee Trustee. In
case an Event of Default has occurred and is continuing (and has not been cured or waived pursuant to Section 2.05), the Guarantee Trustee shall exercise such of the rights and powers vested in it by this Guarantee Agreement, and use the same degree
of care and skill in its exercise thereof, as a prudent person would exercise or use in the conduct of his or her own affairs. 
  
 (d)    No provision of this Guarantee Agreement shall be construed to relieve the Guarantee Trustee from liability for its own
negligent action, its own negligent failure to act or its own willful misconduct, except that: 
  
 (i)    prior to the occurrence of any Event of Default and after the curing or waiving of all such Events of Default
that may have occurred: 
  
 (A)    the duties and obligations of the Guarantee Trustee shall be determined solely by the express provisions of this Guarantee Agreement, and the Guarantee 
  

 5 

 Trustee shall not be liable except for the performance of such duties and obligations as are specifically set forth in
this Guarantee Agreement; and 
  
 (B)    in the absence of bad faith on the part of the Guarantee Trustee, the Guarantee Trustee may rely, as to the truth of the statements and the correctness of the opinions expressed therein, upon any certificates or
opinions furnished to the Guarantee Trustee and conforming to the requirements of this Guarantee Agreement; but in the case of any such certificates or opinions that by any provision hereof or of the Trust Indenture Act are specifically required to
be furnished to the Guarantee Trustee, the Guarantee Trustee shall be under a duty to examine the same to determine whether or not they conform to the requirements of this Guarantee Agreement; 
  
 (ii)    the Guarantee Trustee shall not
be liable for any error of judgment made in good faith by a Responsible Officer of the Guarantee Trustee, unless it shall be proved that the Guarantee Trustee was negligent in ascertaining the pertinent facts upon which such judgment was made;

  
 (iii)    the Guarantee
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 of a Majority in liquidation amount of the Preferred Trust Securities relating to the time,
method and place of conducting any proceeding for any remedy available to the Guarantee Trustee, or exercising any trust or power conferred upon the Guarantee Trustee under this Guarantee Agreement; and 
  
 (iv)    no provision of this Guarantee
Agreement shall require the Guarantee 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 the Guarantee Trustee shall
have reasonable grounds for believing that the repayment of such funds or liability is not reasonably assured to it under the terms of this Guarantee Agreement or reasonable indemnity against such risk or liability is not reasonably assured to it.

  
 Section 3.02.    Certain
Rights of Guarantee Trustee. 
  
 (a)    Subject to the provisions of Section 3.01: 
  
 (i)    The Guarantee Trustee may rely and shall be fully protected in acting or refraining from acting upon any resolution, certificate, statement, instrument, opinion, report, notice, request,
direction, consent, order, bond, debenture, note, other evidence of indebtedness or other paper or document believed by it to be genuine and to have been signed, sent or presented by the proper party or parties. 
  
 (ii)    Any direction or act of the
Guarantor contemplated by this Guarantee Agreement shall be sufficiently evidenced by an Officers’ Certificate unless otherwise prescribed herein. 
  
 (iii)    Whenever, in the administration of this Guarantee Agreement, the Guarantee Trustee shall deem it desirable
that a matter be proved or established before taking, suffering or omitting to take any action hereunder, the Guarantee Trustee (unless other evidence 
  

 6 

 is herein specifically prescribed) may, in the absence of bad faith on its part, request and rely upon an Officers’
Certificate which, upon receipt of such request from the Guarantee Trustee, shall be promptly delivered by the Guarantor. 
  
 (iv)    The Guarantee Trustee may consult with legal counsel, and the written advice or Opinion of Counsel with
respect to legal matters 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. Such legal counsel may be
legal counsel to the Guarantor or any of its Affiliates and may be one of its employees. The Guarantee Trustee shall have the right at any time to seek instructions concerning the administration of this Guarantee Agreement from any court of
competent jurisdiction. 
  
 (v)    The Guarantee Trustee shall be under no obligation to exercise any of the rights or powers vested in it by this Guarantee Agreement at the request or direction of any Holder, unless such Holder shall have provided
to the Guarantee Trustee such reasonable indemnity as would satisfy a reasonable person in the position of the Guarantee Trustee, against the costs, expenses (including attorneys’ fees and expenses) and liabilities that might be incurred by it
in complying with such request or direction; provided that, nothing contained in this Section 3.02(a)(v) shall be taken to relieve the Guarantee Trustee, upon the occurrence of an Event of Default, of its obligation to exercise the rights and powers
vested in it by this Guarantee Agreement. 
  
 (vi)    The Guarantee Trustee shall not be bound to make any investigation into the facts or matters stated in any resolution, certificate, statement, instrument, opinion, report, notice, request, direction, consent,
order, bond, debenture, note, other evidence of indebtedness or other paper or document, but the Guarantee Trustee, in its discretion, may make such further inquiry or investigation into such facts or matters as it may see fit. 
  
 (vii)    The Guarantee Trustee may
execute any of the trusts or powers hereunder or perform any duties hereunder either directly or by or through its agents or attorneys, and the Guarantee 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. 
  
 (viii)    Whenever in the administration of this Guarantee Agreement the Guarantee Trustee shall deem it desirable to receive instructions with respect to enforcing any remedy or right or taking any other action
hereunder, the Guarantee Trustee (A) may request instructions from the Holders, (B) may refrain from enforcing such remedy or right or taking such other action until such instructions are received, and (C) shall be protected in acting in accordance
with such instructions. 
  
 (b)    No
provision of this Guarantee Agreement shall be deemed to impose any duty or obligation on the Guarantee Trustee to perform any act or acts or exercise any right, power, duty or obligation conferred or imposed on it in any jurisdiction in which it
shall be illegal, or in which the Guarantee Trustee shall be unqualified or incompetent in accordance with applicable law, to perform any such act or acts or to exercise any such right, power, duty or obligation. No permissive power or authority
available to the Guarantee Trustee shall be construed to be a duty to act in accordance with such power and authority. 
  

 7 

 Section 3.03.    Indemnity.  The Guarantor agrees to
indemnify the Guarantee Trustee for, and to hold it harmless against, any loss, liability or expense incurred without negligence or willful misconduct on the part of the Guarantee Trustee, arising out of or in connection with the acceptance or
administration of this Guarantee Agreement, including the costs and expenses of defending itself against any claim or liability in connection with the exercise or performance of any of its powers or duties hereunder. The Guarantee Trustee will not
claim or exact any lien or charge on any Guarantee Payments as a result of any amount due to it under this Guarantee Agreement. 
  
 ARTICLE IV 
 GUARANTEE TRUSTEE

  
 Section 4.01.    Guarantee
Trustee; Eligibility. 
  
 (a)    There
shall at all times be a Guarantee Trustee which shall: 
  
 (i)    not be an Affiliate of the Guarantor; and 
  
 (ii)    be a Person that is eligible pursuant to the Trust Indenture Act to act as such and has a combined capital and surplus of at least fifty million U.S. dollars ($50,000,000), and shall be a
corporation meeting the requirements of Section 310(a) of the Trust Indenture Act. If such corporation publishes reports of condition at least annually, pursuant to law or to the requirements of the supervising or examining authority, then, for the
purposes of this Section and to the extent permitted by the Trust Indenture Act, 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. 
  
 (b)    If at any time the
Guarantee Trustee shall cease to be eligible to so act under Section 4.01(a), the Guarantee Trustee shall immediately resign in the manner and with the effect set out in Section 4.02(c). 
  
 (c)    If the Guarantee Trustee has or shall acquire any “conflicting interest” within the
meaning of Section 310(b) of the Trust Indenture Act, the Guarantee Trustee and Guarantor shall in all respects comply with the provisions of Section 310(b) of the Trust Indenture Act. In determining whether the Guarantee Trustee has a
“conflicting interest” within the meaning of Section 310(b)(1) of the Trust Indenture Act, the provisions contained in the proviso to Section 310(b)(1) of the Trust Indenture Act and the Guarantee Trustee’s Statement of Eligibility on
Form T-1 shall be deemed incorporated herein. 
  
 Section
4.02.    Appointment, Removal and Resignation of the Guarantee Trustee. 
  
 (a)    Subject to Section 4.02(b), the Guarantee Trustee may be appointed or removed without cause at any time by the Guarantor.

  
 (b)    The Guarantee Trustee shall not be
removed until new, eligible guarantee trustee has been appointed (a “Successor Guarantee Trustee”) and has accepted such appointment and assumed the applicable obligations hereunder by written instrument executed by such Successor
Guarantee Trustee and delivered to the Guarantor. 
  

 8 

 (c)    The Guarantee Trustee may resign from office (without need for prior or
subsequent accounting) by an instrument in writing executed by the Guarantee Trustee and delivered to the Guarantor, which resignation shall not take effect until a Successor Guarantee Trustee has been appointed and has accepted such appointment by
instrument in writing executed by such Successor Guarantee Trustee and delivered to the Guarantor and the resigning Guarantee Trustee. 
  
 (d)    If no Successor Guarantee Trustee shall have been appointed and accepted appointment as provided in this Section 4.02 within 60
days after delivery to the Guarantor of an instrument of resignation, the resigning Guarantee Trustee may petition, at the expense of the Guarantor, any court of competent jurisdiction for appointment of a Successor Guarantee Trustee. Such court may
thereupon, after prescribing such notice, if any, as it may deem proper, appoint a Successor Guarantee Trustee. 
  
 ARTICLE V 
 GUARANTEE 
  
 Section
5.01.    Guarantee.  The Guarantor irrevocably and unconditionally agrees to pay in full to the Holders of the Outstanding Preferred Trust Securities the Guarantee Payments (without duplication of
amounts theretofore paid by or on behalf of the Issuer pursuant to the Trust Agreement or by the Guarantor pursuant to the Indenture), as and when due, regardless of any defense, right of set-off or counterclaim which the Issuer may have or assert.
The Guarantor’s obligation to make a Guarantee Payment may be satisfied by direct payment of the required amounts by the Guarantor to the Holders or by causing the Issuer to pay such amounts to the Holders. 
  
 Section 5.02.    Waiver of Notice and
Demand.  The Guarantor hereby waives notice of acceptance of the Guarantee Agreement and of any liability to which it applies or may apply, presentment, demand for payment, any right to require a proceeding first against the
Guarantee Trustee, the Issuer or any other Person before proceeding against the Guarantor, protest, notice of nonpayment, notice of dishonor, notice of redemption and all other notices and demands. 
  
 Section 5.03.    Obligations Not
Affected.  The obligations, covenants, agreements and duties of the Guarantor under this Guarantee Agreement shall in no way be affected or impaired by reason of the happening from time to time of any of the following: 

 
 (a)    the release or waiver, by operation of law or
otherwise, of the performance or observance by the Issuer of any express or implied agreement, covenant, term or condition relating to the Preferred Trust Securities to be performed or observed by the Issuer; 
  
 (b)    the extension of time for the payment by the
Issuer of all or any portion of the Distributions (other than an extension of time for payment of Distributions that results from an Extension Period on the Trust Debt Securities as so provided in the Indenture), Redemption Price, Liquidation
Distribution or any other sums payable under the terms of the Preferred Trust Securities or the extension of time for the performance of any other obligation under, arising out of, or in connection with, the Preferred Trust Securities; 

 

 9 

 (c)    any failure, omission, delay or lack of diligence on the part of the Holders
to enforce, assert or exercise any right, privilege, power or remedy conferred on the Holders pursuant to the terms of the Preferred Trust Securities, or any action on the part of the Issuer granting indulgence or extension of any kind; 

 
 (d)    the voluntary or involuntary liquidation,
termination, sale of any collateral, receivership, insolvency, bankruptcy, assignment for the benefit of creditors, reorganization, arrangement, composition or readjustment of debt of, or other similar proceedings affecting, the Issuer or any of the
assets of the Issuer; 
  
 (e)    any
invalidity of, or defect or deficiency in, the Preferred Trust Securities; 
  
 (f)    the settlement or compromise of any obligation guaranteed hereby or hereby incurred; or 
  
 (g)    to the extent permitted by law, any other circumstance whatsoever that might otherwise constitute a legal or equitable
discharge or defense of a guarantor, it being the intent of this Section 5.03 that the obligations of the Guarantor hereunder shall be absolute and unconditional under any and all circumstances. 
  
 There shall be no obligation of the Holders to give notice to, or obtain the
consent of, the Guarantor with respect to the happening of any of the foregoing. 
  
 Section 5.04.    Rights of Holders.  The Guarantor expressly acknowledges that: (i) this Guarantee Agreement will be deposited with the Guarantee Trustee to be held
for the benefit of the Holders; (ii) the Guarantee Trustee has the right to enforce this Guarantee Agreement on behalf of the Holders; (iii) the Holders of a Majority in liquidation amount of the Preferred Trust Securities have the right to direct
the time, method and place of conducting any proceeding for any remedy available to the Guarantee Trustee in respect of this Guarantee Agreement or exercise or direct the exercise of any trust or power conferred upon the Guarantee Trustee under this
Guarantee Agreement; and (iv) if the Guarantee Trustee has failed to enforce this Guarantee Agreement as above provided, any Holder may institute a legal proceeding directly against the Guarantor to enforce its rights under this Guarantee Agreement,
without first instituting a legal proceeding against the Guarantee Trustee, the Issuer or any other Person. 
  
 Section 5.05.    Guarantee of Payment.  This Guarantee Agreement creates a guarantee of payment and not
of collection. This Guarantee Agreement will not be discharged except by payment of the Guarantee Payments in full (without duplication of amounts theretofore paid by the Issuer) or upon distribution of Trust Debt Securities to Holders as provided
in the Trust Agreement. 
  
 Section
5.06.    Subrogation.  The Guarantor shall be subrogated to all (if any) rights of the Holders against the Issuer in respect of any amounts paid to the Holders by the Guarantor under this Guarantee
Agreement and shall have the right to waive payment by the Issuer pursuant to Section 5.01; provided, however, that the Guarantor shall not (except to the extent required by mandatory provisions of law) be entitled to enforce or exercise any rights
which it may acquire by way of subrogation or any indemnity, reimbursement or other agreement, in all cases as a result of payment under this Guarantee Agreement, if, at the time of any such 
  

 10 

 payment, any amounts are due and unpaid under this Guarantee Agreement. If any amount shall be paid to the Guarantor in
violation of the preceding sentence, the Guarantor agrees to hold such amount in trust for the Holders and to pay over such amount to the Holders. 
  
 Section 5.07.    Independent Obligations.    The Guarantor acknowledges that its obligations
hereunder are independent of the obligations of the Issuer with respect to the Preferred Trust Securities and that the Guarantor shall be liable as principal and as debtor hereunder to make Guarantee Payments pursuant to the terms of this Guarantee
Agreement notwithstanding the occurrence of any event referred to in subsections (a) through (g), inclusive, of Section 5.03 hereof. 
  
  
 ARTICLE VI 
 COVENANTS AND SUBORDINATION 
  
 Section 6.01.    Ranking.    This Guarantee Agreement will constitute an unsecured obligation of the Guarantor and will rank (i) subordinate and junior in
right of payment to all other liabilities of the Guarantor, except those made pari passu or subordinate by their terms, (ii) pari passu with the most senior preferred or preference stock now or hereafter issued by the Guarantor and with any
guarantee now or hereafter entered into by the Guarantor in respect of any preferred or preference stock of any Affiliate of the Guarantor and (iii) senior to the Guarantor’s Common Trust Securities. 
  
 Section 6.02.    Limitation of
Transactions.    So long as any Preferred Trust Securities remain outstanding, if (i) there shall have occurred an Event of Default, (ii) there shall have occurred an event of default under the Indenture or (iii) the
Guarantor has exercised its option to defer interest payments on the Trust Debt Securities by extending the interest payment period as provided therein, and such period or extension thereof shall be continuing, then (a) the Guarantor shall not
declare or pay any dividend on, make any distribution or other payment with respect to, or redeem, purchase, acquire or make any liquidation payment with respect to any of its capital stock (other than (1) repurchases, redemptions or other
acquisitions of shares of the Guarantor’s capital stock in connection with the satisfaction by the Guarantor of its obligations under any employee benefit plans, (2) as a result of an exchange or conversion of one class or series of the
Guarantor’s capital stock for another class or series of the Guarantor’s capital stock or (3) the purchase of fractional interests in shares of the Guarantor’s capital stock pursuant to the conversion or exchange provisions of such
capital stock or the security being converted or exchanged), (b) the Guarantor shall not make any payment of interest, principal or premium, if any, on or repay, repurchase or redeem any debt securities issued by the Guarantor that rank pari passu
with or junior to the Trust Debt Securities, (c) the Guarantor shall not make any guarantee payments with respect to the foregoing (other than pursuant to this Guarantee Agreement), and (d) the Guarantor shall not make any guarantee payments with
respect to any outstanding preferred trust securities issued by any other trust sponsored by Guarantor. 
  
 In addition, so long as any Preferred Trust Securities remain outstanding, the Guarantor (i) will remain the sole direct or indirect owner of all the
outstanding Common Trust Securities; provided that any permitted successor of the Guarantor under the Indenture may succeed to the Guarantor’s ownership of the Common Trust Securities, (ii) will not take any action which would cause the Issuer
to cease to be treated as a grantor trust for United States federal income 
  

 11 

 tax purposes, (iii) will cause the Issuer to remain a statutory trust and (iv) will not cause or permit the dissolution,
winding-up, liquidation or termination of the Issuer, except, in the case of clauses (iii) and (iv) above, in connection with a distribution of the Trust Debt Securities, the redemption of all of the Trust Securities or mergers, consolidations or
amalgamations, each as provided in the Trust Agreement. 
  
 ARTICLE VII 
 TERMINATION 
  
 Section 7.01.    Termination.    This Guarantee Agreement shall terminate and be of no
further force and effect upon (i) full payment by the Issuer or the Guarantor, as the case may be, of the Redemption Price for all Preferred Trust Securities, (ii) the distribution of the Trust Debt Securities to the Holders in accordance with
Article VIII of the Trust Agreement upon the dissolution of the Issuer or (iii) full payment by the Issuer or the Guarantor, as the case may be, of the amounts payable in accordance with the Trust Agreement upon the dissolution of the Issuer.
Notwithstanding the foregoing, this Guarantee Agreement will continue to be effective or will be reinstated, as the case may be, if, at any time, any Holder must restore payment of any sums paid with respect to Preferred Trust Securities or this
Guarantee Agreement. 
  
  
 ARTICLE VIII 
 MISCELLANEOUS 
  
 Section 8.01.    Successors and
Assigns.    All guarantees and agreements contained in this Guarantee Agreement shall bind the successors, assigns, receivers, trustees and representatives of the Guarantor and shall inure to the benefit of the Holders of
the Preferred Trust Securities then outstanding. The Guarantor may not consolidate with or merge with or into, or sell, convey, transfer or lease its properties and assets as an entirety or substantially as an entirety (either in one transaction or
a series of transactions) to, any Person unless permitted under Article V of the Indenture. In connection with a consolidation, merger or sale involving the Guarantor that is permitted under Article V of the Indenture the Person formed by or
surviving such consolidation or merger or to which such sale, conveyance, transfer or lease shall have been made, if other than the Guarantor, shall expressly assume all of the obligations of the Guarantor hereunder and under the Trust Agreement.

  
 Section
8.02.    Amendments.    Except with respect to any changes which do not adversely affect the rights of the Holders in any material respect (in which case no consent of the Holders will be
required), this Guarantee Agreement may only be amended with the prior approval of the Holders of a Majority in liquidation amount of the Preferred Trust Securities (excluding any Preferred Trust Securities held by the Guarantor or an affiliate
thereof). The provisions of Article VI of the Trust Agreement concerning meetings of the Holders shall apply to the giving of such approval. 
  
 Section 8.03.    Notices.    Any notice, request or other communication required or permitted
to be given hereunder shall be in writing and delivered, telecopied or mailed by first class mail, postage prepaid, as follows: 
  

 12 

 (a)    if given to the Guarantor, to the address set forth below or such other
address as the Guarantor may give notice of to the Holders: 
  
 Southwest Gas Corporation 
 5241 Spring Mountain Road 
 P.O. Box 98510 
 Las Vegas, Nevada 89193-8510 
  
 (b)    if given to the Issuer, in care of the Guarantee Trustee, at the Issuer’s (and the Guarantee
Trustee’s) address set forth below or such other address as the Guarantee Trustee on behalf of the Issuer may give notice to the Holders: 
  
 Southwest Gas Capital II 
 c/o Southwest Gas
Corporation 
 5241 Spring Mountain Road 
 P.O. Box 98510 
 Las Vegas, Nevada 89193-8510 
  
 with a copy to: 
  
 BNY Midwest Trust Company 
 2 North LaSalle
Street, Suite 1020 
 Chicago, Illinois 60602 
  
 (c)    if given to any Holder, at the address set forth in the Securities Register. 
  
 All notices hereunder shall be deemed to have been given when received in
person, telecopied with receipt confirmed, or mailed by first class mail, postage prepaid, except that if a notice or other document is refused delivery or cannot be delivered because of a changed address of which no notice was given, such notice or
other document shall be deemed to have been delivered on the date of such refusal or inability to deliver. 
  
 Section 8.04.    Benefit.    This Guarantee Agreement is solely for the benefit of the
Holders and, subject to Section 3.01(a), is not separately transferable from the Preferred Trust Securities. 
  
 Section 8.05.    Interpretation.    In this Guarantee Agreement, unless the context otherwise
requires: 
  
 (a)    all references to
“the Guarantee Agreement” or “this Guarantee Agreement” are to this Guarantee Agreement as modified, supplemented or amended from time to time; 
  
 (b)    all references in this Guarantee Agreement to Articles and Sections are to Articles and Sections
of this Guarantee Agreement unless otherwise specified; 
  

 13 

 (c)    a term defined in the Trust Indenture Act has the same meaning when used in
this Guarantee Agreement unless otherwise defined in this Guarantee Agreement or unless the context otherwise requires; 
  
 (d)    a reference to the singular includes the plural and vice versa; and 
  
 (e)    the masculine, feminine or neuter genders used
herein shall include the masculine, feminine and neuter genders. 
  
 Section 8.06.    Governing Law.    THIS GUARANTEE AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED AND INTERPRETED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK AS APPLIED TO
CONTRACTS MADE AND PERFORMED WITHIN THE STATE OF NEW YORK, WITHOUT REGARD TO THE CONFLICT OF LAW PRINCIPLES THEREOF. 
  
 This instrument may be executed in any number of counterparts, each of which so executed shall be deemed to be an original, but all such counterparts
shall together constitute but one and the same instrument. 
  

 14 

 THIS GUARANTEE AGREEMENT is executed as of the day and year first above written. 
  
  

	 SOUTHWEST GAS CORPORATION, as
 Guarantor

		
	 By:
	 	  

	 	 	 Name:
 Title:

	 	 	 
	 	 	 
	
	 BNY MIDWEST TRUST COMPANY, as
 Guarantee Trustee

		
	 By:
	 	  

	 	 	 Name:
 Title:

  

 15Form of Indenture dated as of August 25, 2003

 EXHIBIT 4.14 
  
  
  
  
  
  
  
  
  
  
 SOUTHWEST GAS CORPORATION 
  
  
 and 
  
  
 BNY MIDWEST TRUST COMPANY, as Trustee

  
  
 INDENTURE 
  
  
 Dated as of August 25, 2003 
  
  
 Providing for the Issuance of 
 Deferrable Interest Subordinated Debentures in Series 
  
  
 including 
  
  
 7.70% Junior Subordinated Debentures due 2043

  
  
  
  
  
  
  
  
  
  

 Southwest Gas Corporation Indenture 
 Certain Sections of this Indenture relating to 
 Sections 310 through 318 of the

 Trust Indenture Act of 1939 
  

	Trust Indenture Act Section

	  	 Indenture Section

	 ss.310(a)(1)
	  	 7.10

	 	 	 (a)(2)	  	 7.10

	 	 	 (a)(3)	  	 Not Applicable

	 	 	 (a)(4)	  	 Not Applicable

	 	 	 (a)(5)	  	 Not Applicable

	 	 	 (b)	  	 7.08; 7.10; 11.01

	 	 	 (c)	  	 Not Applicable

	 ss.311(a)
	  	 7.11

	 	 	 (b)	  	 7.11

	 	 	 (c)	  	 Not Applicable

	 ss.312(a)
	  	 2.07

	 	 	 (b)	  	 11.03

	 	 	 (c)	  	 11.03

	 ss.313(a)
	  	 7.06

	 	 	 (b)(1)	  	 Not Applicable

	 	 	 (b)(2)	  	 7.06

	 	 	 (c)	  	 7.06; 11.02

	 	 	 (d)	  	 7.06

	 ss.314(a)
	  	 4.03; 11.02

	 	 	 (b)	  	 Not Applicable

	 	 	 (c)(1)	  	 2.02; 11.04; 11.05

	 	 	 (c)(2)	  	 2.02; 11.04; 11.05

	 	 	 (c)(3)	  	 Not Applicable

	 	 	 (d)	  	 Not Applicable

	 	 	 (e)	  	 11.05

	 	 	 (f)	  	 Not Applicable

	 ss.315(a)
	  	 7.01(b)

	 	 	 (b)	  	 7.05,11.02

	 	 	 (c)	  	 7.01(a)

	 	 	 (d)	  	 7.01(c)

	 	 	 (e)	  	 6.11

	 ss.316(a)(1)(A)
	  	 6.05

	 	 	 (a)(1)(B)	  	 6.04

	 	 	 (a)(2)	  	 Not Applicable

	 	 	 (a)(last sentence)	  	 2.10

	 	 	 (b)	  	 6.07

	 	 	 (c)	  	 1.05

	 ss.317(a)(1)
	  	 6.08

	 	 	 (a)(2)	  	 6.09

	 	 	 (b)	  	 2.06

  

 -i- 

	 ss.318(a)
	  	 11.01

	 	 	(b)	  	 Not Applicable

	 	 	(c)	  	 11.01

  

	Note:	 	This reconciliation and tie sheet shall not, for any purpose, be deemed to be a part of the Indenture. 

  

 -ii- 

 TABLE OF CONTENTS 
  

	 	  	 	  	Page
	ARTICLE I
	DEFINITIONS AND INCORPORATION BY REFERENCE
	 1.01
	  	Definitions	  	1
	 1.02
	  	Other Definitions	  	6
	 1.03
	  	Incorporation by Reference of Trust Indenture Act	  	6
	 1.04
	  	Rules of Construction	  	6
	 1.05
	  	Acts of Holders and Holders of Preferred Trust Securities	  	7
	
	ARTICLE II
	TRUST DEBT SECURITIES; SERIES II TRUST DEBT SECURITIES
	 2.01
	  	Issue of Trust Debt Securities Generally	  	8
	 2.02
	  	Terms and Form of the Series II Trust Debt Securities	  	9
	 2.03
	  	Payment of Principal and Interest	  	10
	 2.04
	  	Execution, Authentication and Delivery	  	12
	 2.05
	  	Registrar and Paying Agent	  	13
	 2.06
	  	Paying Agent to Hold Money in Trust	  	14
	 2.07
	  	Holder Lists	  	15
	 2.08
	  	Transfer and Exchange	  	15
	 2.09
	  	Replacement Trust Debt Securities	  	15
	 2.10
	  	Outstanding Trust Debt Securities; Determinations of Holders’ Action	  	16
	 2.11
	  	Temporary Trust Debt Securities	  	17
	 2.12
	  	Book-Entry System	  	17
	 2.13
	  	Cancellation	  	18
	
	ARTICLE III
	REDEMPTION
	 3.01
	  	Redemption: Notice to Trustee	  	19
	 3.02
	  	Selection of Trust Debt Securities to be Redeemed	  	19
	 3.03
	  	Notice of Redemption	  	19
	 3.04
	  	Effect of Notice of Redemption	  	20
	 3.05
	  	Deposit of Redemption Price	  	20
	 3.06
	  	Trust Debt Securities Redeemed in Part	  	21

  

 -iii- 

 TABLE OF CONTENTS 
 (continued) 
  

	 	  	 	  	Page
	ARTICLE IV
	COVENANTS
	 4.01
	  	Payment of Trust Debt Securities	  	21
	 4.02
	  	Prohibition Against Dividends, etc.	  	22
	 4.03
	  	SEC Reports	  	22
	 4.04
	  	Compliance Certificates	  	22
	 4.05
	  	Further Instruments and Acts	  	23
	 4.06
	  	Payments for Consents	  	23
	 4.07
	  	Payment of Expenses of Trusts	  	23
	
	ARTICLE V
	SUCCESSOR CORPORATION
	 5.01
	  	When Company May Merge, Etc.	  	23
	
	ARTICLE VI
	DEFAULTS AND REMEDIES
	 6.01
	  	Events of Default	  	24
	 6.02
	  	Acceleration	  	25
	 6.03
	  	Other Remedies	  	26
	 6.04
	  	Waiver of Past Defaults	  	26
	 6.05
	  	Control by Majority	  	26
	 6.06
	  	Limitation on Suits	  	27
	 6.07
	  	Rights of Holders to Receive Payment	  	27
	 6.08
	  	Collection Suit by Trustee	  	28
	 6.09
	  	Trustee May File Proofs of Claim	  	28
	 6.10
	  	Priorities	  	28
	 6.11
	  	Undertaking for Costs	  	29
	 6.12
	  	Waiver of Stay; Extension or Usury Laws	  	29
	
	ARTICLE VII
	TRUSTEE
	 7.01
	  	Duties of Trustee	  	29
	 7.02
	  	Rights of Trustee	  	30
	 7.03
	  	Individual Rights of Trustee	  	32

  

 -iv- 

 TABLE OF CONTENTS 
 (continued) 

	 	  	 	  	Page
	 	  	 	  	 
	 7.04
	  	Trustee’s Disclaimer	  	32
	 7.05
	  	Notice of Defaults	  	32
	 7.06
	  	Reports by Trustee to Holders	  	32
	 7.07
	  	Compensation and Indemnity	  	32
	 7.08
	  	Replacement of Trustee	  	33
	 7.09
	  	Successor Trustee by Merger	  	34
	 7.10
	  	Eligibility: Disqualification	  	34
	 7.11
	  	Preferential Collection of Claims Against Company	  	34
	
	ARTICLE VIII
	 SATISFACTION AND DISCHARGE OF INDENTURE; DEFEASANCE OF CERTAIN
 OBLIGATIONS; UNCLAIMED MONEYS

	 8.01
	  	Satisfaction and Discharge of Indenture	  	35
	 8.02
	  	Application by Trustee of Funds Deposited for Payment of Trust Debt Securities	  	36
	 8.03
	  	Repayment of Moneys Held by Paying Agent	  	36
	 8.04
	  	Return of Moneys Held by the Trustee and Paying Agent Unclaimed for Three Years	  	36
	 8.05
	  	Reinstatement	  	37
	
	ARTICLE IX
	AMENDMENTS
	 9.01
	  	Without Consent of Holders	  	37
	 9.02
	  	With Consent of Holders	  	37
	 9.03
	  	Compliance with Trust Indenture Act	  	38
	 9.04
	  	Revocation and Effect of Consents; Waivers and Actions	  	38
	 9.05
	  	Notation on or Exchange of Trust Debt Securities	  	39
	 9.06
	  	Trustee to Execute Supplemental Indentures	  	39
	 9.07
	  	Effect of Supplemental Indentures	  	39
	
	ARTICLE X
	SUBORDINATION
	 10.01
	  	Applicability of Article; Trust Debt Securities Subordinated to Senior Indebtedness	  	40
	 10.02
	  	Priority and Payment of Proceeds in Certain Events: Remedies Standstill	  	40
	 10.03
	  	Payments which May Be Made Prior to Notice	  	41

  

 -v- 

 TABLE OF CONTENTS 
 (continued) 
  

	 	  	 	  	Page
	 	  	 	  	 
	 10.04
	  	Rights of Holders of Senior Indebtedness Not to Be Impaired	  	41
	 10.05
	  	Trustee May Take Action to Effectuate Subordination	  	42
	 10.06
	  	Subrogation	  	42
	 10.07
	  	Obligations of Company Unconditional; Reinstatement	  	42
	 10.08
	  	Trustee Entitled to Assume Payments Not Prohibited in Absence of Notice	  	43
	 10.09
	  	Right of Trustee to Hold Senior Indebtedness	  	43
	 10.10
	  	Trustee Not Fiduciary for Holders of Senior Indebtedness	  	44
	
	ARTICLE XI
	MISCELLANEOUS
	 11.01
	  	Trust Indenture Act Controls	  	44
	 11.02
	  	Notices	  	44
	 11.03
	  	Communication by Holders with Other Holders	  	45
	 11.04
	  	Certificate and Opinion as to Conditions Precedent	  	45
	 11.05
	  	Statements Required in Certificate or Opinion	  	45
	 11.06
	  	Severability Clause	  	46
	 11.07
	  	Rules by Trustee, Paying Agent and Registrar	  	46
	 11.08
	  	Legal Holidays	  	46
	 11.09
	  	Governing Law	  	46
	 11.10
	  	No Recourse Against Others	  	46
	 11.11
	  	Successors	  	47
	 11.12
	  	Multiple Original Copies of this Indenture	  	47
	 11.13
	  	No Adverse Interpretation of Other Agreements	  	47
	 11.14
	  	Table of Contents: Headings. Etc.	  	47
	 11.15
	  	Benefits of the Indenture	  	47
		
	 Exhibit A
	  	 
		
	 Southwest Gas Corporation 7.70 % Junior Subordinated Debenture due 2043
	  	A-1

  

 -vi- 

 INDENTURE, dated as of August 25, 2003, by and between Southwest Gas Corporation, a corporation duly
organized and existing under the laws of the State of California (the “Company”), and BNY Midwest Trust Company, a trust company duly organized and existing under the laws of the State of Illinois, as trustee (the “Trustee”).

  
 WHEREAS, the Company may from time to time create or establish
one or more statutory trusts for the purpose of issuing undivided beneficial interests in the assets thereof (the “Trust Securities”) and using the proceeds thereof to acquire the Company’s Deferrable Interest Junior Subordinated
Debentures. 
  
 WHEREAS, pursuant to an Amended and Restated Trust
Agreement dated as of August 25, 2003 (the “Trust II Agreement”) among the Company, as depositor, BNY Midwest Trust Company, as Property Trustee (the “Property Trustee II”) and Bank of New York (Delaware), as Delaware Trustee,
there has been declared and established Southwest Gas Capital II, a Delaware statutory trust (“Trust II”). 
  
 WHEREAS, Trust II intends to issue its Trust Securities, including its 7.70% Preferred Trust Securities, representing undivided beneficial interests in
the assets of Trust II, having a liquidation amount of $25 per security and having terms provided therefor in the Trust II Agreement (the “Trust II Preferred Securities”). 
  
 WHEREAS, the Company has authorized the issuance of its 7.70% Junior Subordinated Debentures due 2043 (the “Series II
Trust Debt Securities”) to be purchased by Trust II with the proceeds from the issuance and sale of its Trust Securities, and to provide therefor, the Company has duly authorized the execution and delivery of this Indenture. 
  
 WHEREAS, all things necessary to make the securities issued hereunder, when
duly issued and executed by the Company and authenticated and delivered hereunder, the valid obligations of the Company, and to make this Indenture a valid and binding agreement of the Company, enforceable in accordance with its terms, have been
done. 
  
 NOW THEREFORE: 
  
 Each of the Company and the Trustee, intending to be legally bound hereby,
agrees as follows for the benefit of the other party and for the equal and ratable benefit of the Holders (as hereinafter defined) of the securities issued hereunder, including the Series II Trust Debt Securities: 
  
  
 ARTICLE I 
 DEFINITIONS AND INCORPORATION BY REFERENCE 
  
 1.01    Definitions. 
  
 “Affiliate” of any specified Person means any other Person, directly or indirectly, controlling or controlled by
or under direct or indirect common control with such specified Person. When used with respect to any Person, “control” means the power to direct the management and policies of such Person, directly or indirectly, whether through the
ownership 

 of voting securities, by contract or otherwise; and the terms “controlling” and “controlled” have
meanings correlative to the foregoing. 
  
 “Bankruptcy
Law” means Title 11 of the United States Code, or any similar federal or state law for the relief of debtors. 
  
 “Board of Directors” means the Board of Directors of the Company or any committee thereof duly authorized to act on behalf of such Board.

  
 “Board Resolution” means (i) a copy of a resolution
certified by the Secretary or the Assistant Secretary of the Company to have been duly adopted by the Board of Directors and to be in full force and effect on the date of such certification, or (ii) a certificate signed by the authorized officer or
officers to whom the Board of Directors has delegated its authority, and in each case, delivered to the Trustee. 
  
 “Business Day” means any day that is not a Saturday, a Sunday or a day on which banking institutions in The City of New York, the city of
Chicago or the State of California are authorized or required by law or executive order to close. 
  
 “Capital Stock” means any and all shares, interests, rights to purchase, warrants, options, participation or other equivalents of or interests
in (however designated) corporate stock, including limited liability company membership interests. 
  
 “Common Trust Securities” means the Common Trust Securities of a Trust, representing undivided beneficial interests in the assets of such Trust.

  
 “Company” means Southwest Gas Corporation, a
California corporation, or any permitted successor thereto. 
  
 “Company Order” means a written request or order signed in the name of the Company by an Officer of the Company and delivered to the Trustee. 
  

“Custodian” means any receiver, trustee, assignee, liquidator, sequestrator, custodian or similar official under any Bankruptcy Law.

  
 “Default” means any event which is, or after notice
or passage of time, or both, would be, an Event of Default pursuant to Section 6.01 hereof. 
  
 “Exchange Act” means the Securities Exchange Act of 1934, as amended. 
  
 “Extension Period”, with respect to any series of Trust Debt Securities, means the period during which the Company may elect to extend the
interest payment period on such series of the Trust Debt Securities pursuant to Section 4.01(b) hereof; provided that no Extension Period shall extend beyond the Stated Maturity Date or the Redemption Date of any Trust Debt Security of such series.

  

 2 

 “GAAP” means generally accepted accounting principles set forth in the opinions and
pronouncements of the Accounting Principles Board of the American Institute of Certified Public Accountants and statements and pronouncements of the Financial Accounting Standards Board. 
  
 “Holder” means a Person in whose name a Trust Debt Security is registered on the Registrar’s books.

  
 “Indenture” means this indenture, as amended or
supplemented from time to time in accordance with the terms hereof, including the provisions of the TIA that are deemed to be a part hereof. 
  
 “Interest Payment Date”, when used with respect to the Trust Debt Securities of any series, means the stated maturity of any installment of
interest on the Trust Debt Securities of that series. 
  
 “Issue Date”, with respect to a series of Trust Debt Securities, means the date on which the Trust Debt Securities of such series are originally issued. 
  
 “Legal Holiday” means any day other than a Business Day. 
  
 “Officer” means, with respect to any corporation, the Chairman of
the Board, the Chief Executive Officer, the President, any Vice President, the Treasurer, any Assistant Treasurer, the Secretary or any Assistant Secretary of such corporation. 
  
 “Officer’s Certificate” means a written certificate containing the applicable information specified in
Sections 11.04 and 11.05 hereof, signed in the name of the Company by any one of its Officers, and delivered to the Trustee. 
  
 “Opinion of Counsel” means a written opinion containing the applicable information specified in Sections 11.04 and 11.05 hereof, by legal
counsel who may be an employee of the Company. 
  
 “Paying
Agent” means any Person authorized by the Company to pay the principal of and premium, if any, and interest on the Trust Debt Securities of any series on behalf of the Company. 
  
 “Person” means any individual, corporation, partnership, limited liability company, joint venture, association,
joint-stock company, trust, unincorporated organization, government or any agency or political subdivision thereof or any other entity. 
  
 “Predecessor Trust Debt Securities” of any particular Trust Debt Security means every previous Trust Debt Security evidencing all or a portion
of the same debt as that evidenced by such particular Trust Debt Security; and for purposes of this definition, any Trust Debt Security authenticated and delivered under Section 2.09 hereof in exchange for or in lieu of a mutilated, destroyed, lost
or stolen Trust Debt Security shall be deemed to evidence the same debt as the mutilated, destroyed, lost or stolen Trust Debt Security. 
  

 3 

 “Preferred Trust Securities” means the Preferred Trust Securities of a Trust, representing
undivided beneficial interests in the assets of such Trust. 
  
 “Property Trustee II” means BNY Midwest Trust Company and its successors and assigns, as property trustee under the Trust II Agreement. 
  
 “Record Date”, with respect to any series of the Trust Debt Securities, means the Regular Record Date, the Special Record Date or any date set
to determine the Holders of Trust Debt Securities of such series entitled to vote, consent, make a request or exercise any other right associated with such Trust Debt Securities. 
  
 “Redemption Date”, with respect to the Trust Debt Securities of any series to be redeemed, means the date
specified for the redemption thereof in accordance with the terms thereof and pursuant to Article 3 of this Indenture. 
  
 “Redemption Price”, with respect to the Trust Debt Securities of any series to be redeemed, means the price at which such Trust Debt Security is
to be redeemed in accordance with the terms thereof and pursuant to Article 3 of this Indenture. 
  
 “Regular Record Date”, with respect to an interest payment on the Trust Debt Securities of any series, means the date set forth in this
Indenture or the supplemental indenture creating such series for the determination of Holders entitled to receive payment of interest on the next succeeding Interest Payment Date. 
  
 “Responsible Officer”, when used with respect to the Trustee, means any Vice President, any Assistant Vice
President, any Trust Officer, or Assistant Trust Officer or any other officer of the Corporate Trust Department of the Trustee customarily performing functions similar to those performed by any of the above designated officers and also means, with
respect to a particular corporate trust matter, any other officer to whom such matter is referred because of that officer’s knowledge of and familiarity with the particular subject and who shall have direct responsibility for the administration
of this Indenture. 
  
 “SEC” or “Commission”
means the Securities and Exchange Commission. 
  
 “Securities
Act” means the Securities Act of 1933, amended. 
  
 “Senior Indebtedness” means the principal of and premium, if any, and unpaid interest on (i) the Company’s indebtedness (including indebtedness of others guaranteed by the Company), whether outstanding on the date hereof or
hereafter created, incurred, assumed or guaranteed, for money borrowed, unless in the instrument creating or evidencing the same or pursuant to which the same is outstanding it is provided that such indebtedness is not senior or prior in right of
payment to the Trust Debt Securities, and (ii) renewals, extensions, modifications and refundings of any such indebtedness. 
  
 “Series II Trust Debt Securities “ means any of the Company’s 7.70% Junior Subordinated Debentures due 2043 issued under this Indenture.

  

 4 

 “Special Record Date” for the payment of any Defaulted Interest on the Trust Debt Securities of
any series means the date determined pursuant to Section 2.03 hereof. 
  
 “Stated Maturity Date”, with respect to any Trust Debt Security, means the date specified for such Trust Debt Security as the fixed date on which the principal of such Trust Debt Security is due and payable. 
  
 “Subsidiary” means any corporation, association, partnership, trust
or other business entity of which more than 50% of the total voting power of shares of Capital Stock or other interests (including partnership interests) entitled (without regard to the occurrence of any contingency) to vote in the election of
directors, managers or trustees thereof is at the time owned or controlled, directly or indirectly, by (i) the Company, (ii) the Company and one or more Subsidiaries, or (iii) one or more Subsidiaries. 
  
 “Successor” means the Person formed by or surviving such
consolidation or merger or to which such sale, conveyance, transfer or lease shall have been made 
  
 “TIA” means the Trust Indenture Act of 1939, as amended and as in effect on the date of this Indenture; provided, however, that if the TIA is
amended after such date, TIA means, to the extent required by any such amendment, the TIA as so amended. 
  
 “Trust” means any statutory trust created by the Company to issue Trust Securities and to use the proceeds from the sale thereof to purchase
Trust Debt Securities. 
  
 “Trust Debt Securities” means
any of the securities of any series issued, authenticated and delivered under this Indenture. 
  
 “Trust II” means Southwest Gas Capital II, a Delaware statutory trust created under the Delaware Statutory Trust Act, Chapter 38 of Title 12 of the Delaware Code, 12 Del. C. ss. 3801, et seq. 
  
 “Trust II Agreement” means the Amended and Restated Trust Agreement
dated as of August 25, 2003, among the Company, as Depositor, BNY Midwest Trust Company, as Property Trustee, and the Delaware Trustee named therein, as the same may be amended and modified from time to time. 
  
 “Trust II Preferred Securities Guarantee Agreement” means the
Guarantee Agreement dated as of August 25, 2003 from the Company, as guarantor, to BNY Midwest Trust Company, as guarantee trustee, with respect to the Trust II Preferred Securities. 
  
 “Trust II Preferred Securities” means the undivided beneficial interests in the assets of Trust II, having a
liquidation amount of $25 per security and having terms provided therefor in the Trust II Agreement. 
  
 “Trust Securities” means the undivided beneficial interests in the assets of a Trust and includes the Preferred Trust Securities and the Common
Trust Securities of such Trust. 
  

 5 

 “Trustee” means BNY Midwest Trust Company, until a successor replaces it pursuant to the
applicable provisions of this Indenture and, thereafter, shall mean such successor. 
  
 “U.S. Government Obligations” means direct obligations (or certificates representing an ownership interest in such obligations) of the United States of America (including any agency or instrumentality
thereof) for the payment of which the full faith and credit of the United States of America is pledged and which are not callable at the issuer’s option. 
  

“Wholly Owned Subsidiary” means a Subsidiary all the Capital Stock of which (other than directors’ qualifying shares) is owned by the
Company or another Wholly Owned Subsidiary. 
  
 1.02    Other Definitions. 
  

	 TERM

	  	DEFINED IN SECTION

	“Act”	  	1.05
	“Defaulted Interest”	  	2.03
	“Depositary”	  	2.12
	“global Trust Debt Security”	  	2.12
	“Notice of Default”	  	6.01
	“Register”	  	2.05
	“Registrar”	  	2.05

  
 1.03    Incorporation by Reference of Trust Indenture Act. 
  
 Whenever this Indenture refers to a provision of the TIA, such provision is incorporated by reference in and made a part of this Indenture. The following TIA terms used in this Indenture have the following meanings:

  
 “indenture securities” means the Trust Debt
Securities. 
  
 “indenture security holder” means a
Holder. 
  
 “indenture to be qualified” means this
Indenture. 
  
 “indenture trustee” or
“institutional trustee” means the Trustee. 
  
 “obligor” on the indenture securities means the Company and any other obligor on the Trust Debt Securities. 
  
 All other TIA terms used in this Indenture that are defined by the TIA, defined by the TIA reference to another statute or defined by the SEC rule have
the meanings assigned to them by such definitions. 
  
 1.04    Rules of Construction. 
  
 Unless the context otherwise requires: 
  

 6 

 (1)    Each capitalized term has the meaning assigned to it;

  
 (2)    an accounting term
not otherwise defined has the meaning assigned to it in accordance with GAAP; 
  
 (3)    “or” is not exclusive; 
  
 (4)    “including” means including, without limitation; 
  
 (5)    words in the singular include the
plural, and words in the plural include the singular; and 
  
 (6)    “herein,” “hereof” and other words of similar import refer to this Indenture as a whole and not to any particular Article, Section or other subdivision. 
  
 1.05    Acts of Holders and Holders of Preferred Trust
Securities. 
  
 (a)    Any request,
demand, authorization, direction, notice, consent, waiver or other action provided by this Indenture to be given or taken by Holders or by holders of Preferred Trust Securities may be embodied in and evidenced by one or more instruments of
substantially similar tenor signed by such Holders or holders of Preferred Trust Securities, as applicable, in person or by an 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 and, where it is hereby expressly required, to the Company. Such instrument or instruments (and the action embodied therein and evidenced thereby) are herein sometimes referred to as
the “Act” of Holders or holders of Preferred Trust Securities signing such instrument or instruments. Proof of execution of any such instrument or of a writing appointing any such agent shall be sufficient for any purpose of this Indenture
and conclusive in favor of the Trustee and the Company, if made in the manner provided in this Section. 
  
 (b)    The fact and date of the execution by any Person of any such instrument or writing may be proved in any manner which the
Trustee deems sufficient. 
  
 (c)    The
ownership of Trust Debt Securities shall be proved by the Register. 
  
 (d)    Any request, demand, authorization, direction, notice, consent, waiver or other Act of the Holder of any Trust Debt Security shall bind every future Holder of the same Trust Debt Security and the Holder of every
Trust Debt Security issued upon the registration transfer thereof or in exchange therefor or in lieu thereof in respect of anything done, omitted or suffered to be done by the Trustee or the Company in reliance thereon, whether or not notation of
such action is made upon such Trust Debt Security. 
  
 (e)    If the Company solicits from the Holders any request, demand, authorization, direction, notice, consent, waiver or other Act, the Company may, at its option, by or pursuant to a resolution of its Board of
Directors, fix in advance a Record Date for the determination of Holders entitled to give such request, demand, authorization, direction, notice, consent, waiver or other Act, but the Company shall have no obligation to do so. If such a Record Date
is fixed, such request, demand, authorization, direction, notice, consent, waiver or other Act may be given 
  

 7 

 before or after such Record Date, but only Holders of record at the close of business on such Record Date shall be deemed
to be Holders for the purposes of determining whether Holders of the requisite proportion of outstanding Trust Debt Securities have authorized or agreed or consented to such request, demand, authorization, direction, notice, consent, waiver or other
Act, and for that purpose the outstanding Trust Debt Securities shall be computed as of such Record Date. 
  
  
 ARTICLE II 
 TRUST DEBT SECURITIES; SERIES II TRUST DEBT SECURITIES 
  
 2.01    Issue of Trust Debt Securities Generally. 
  
 The aggregate principal amount of any series of Trust Debt Securities which may be authenticated and delivered under this Indenture is limited to the aggregate liquidation amount of the Trust Securities of the Trust
purchasing such Trust Debt Securities. 
  
 The Trust Debt
Securities may be issued in one or more series as from time to time shall be authorized by the Board of Directors. 
  
 The Trust Debt Securities of each series and the Trustee’s Certificate of Authentication shall be substantially in the forms to be attached as
exhibits to the Indenture or supplemental indenture creating such series, but in the case of any series of Trust Debt Securities other than the Series II Trust Debt Securities, with such inclusions, omissions and variations as to letters, numbers or
other marks of identification or designation and such legends or endorsements printed, lithographed or engraved thereon as the Company may deem appropriate and as are not inconsistent with the provisions of this Indenture, or as may be required to
comply with any law or with any rule or regulation made pursuant thereto or with any rule or regulation of any securities exchange on which such Trust Debt Securities may be listed, or to conform to usage. 
  
 Other series of Trust Debt Securities may differ from the Series II Trust
Debt Securities, and as and between series, in respect of any or all of the following matters: 
  
 (a)    designation; 
  
 (b)    Stated Maturity Date or Dates, which may be serial and the Company’s option, if any, to change the Stated Maturity Date or Dates; 
  
 (c)    interest rate or method of determination of the interest rate; 
  
 (d)    the basis upon which interest shall be computed if
other than a 360-day year composed of twelve 30-day months; 
  
 (e)    Interest Payment Dates and the Regular Record Dates therefor; 
  
 (f)    the maximum duration of the Extension Period; 
  
 (g)    Issue Date or Dates and interest accrual provisions; 
  

 8 

 (h)    authorized denominations; 
  
 (i)    the place or places for the payment of principal
(and premium, if any) and interest; 
  
 (j)    the aggregate principal amount of Trust Debt Securities of such series which may be issued; 
  
 (k)    the optional and mandatory redemption provisions, if any; 
  
 (l)    provisions, if any, for any sinking or analogous fund; 
  
 (m)    the applicability to such series of the provisions
of Article 10 hereof relating to subordination; and 
  
 (n)    any other provisions expressing or referring to the terms and conditions upon which the Trust Debt Securities of such series are to be issued under this Indenture which are not in conflict with the provisions of
this Indenture; 
  
 in each case as determined by the Board of Directors and
specified in the supplemental indenture creating such series. 
  
 2.02    Terms and Form of the Series II Trust Debt Securities. 
  
 (a)    The Series II Trust Debt Securities shall be designated “Southwest Gas Corporation, 7.70% Junior Subordinated Debentures
due 2043.” The Series II Trust Debt Securities and the Trustee’s Certificate of Authentication shall be substantially in the form of Exhibit A attached hereto. The Series II Trust Debt Securities shall initially be issued to the Property
Trustee II in definitive registered form in a principal amount equal to the aggregate principal amount of the Series II Trust Debt Securities. As contemplated by Section 8.04(c) of the Trust II Agreement, upon the occurrence of an Early Termination
Event (as defined in the Trust II Agreement, except where Section 8.02(c) thereof applies), the Series II Trust Debt Securities will be presented to the Trustee by the Property Trustee in exchange for (i) if the Trust II Preferred Securities are
then issued in book-entry-only form, a Like Amount (as defined in the Trust II Agreement) of a global Trust Debt Security issued to or on behalf of The Depository Trust Company as Depositary in accordance with the provisions of Section 2.12 hereof
and (ii) if any Trust II Preferred Securities are held in definitive registered form, a Like Amount of Trust Debt Securities in definitive registered form issued to the holder of such Trust II Preferred Securities, in the case of clause (i) or (ii),
upon surrender of the certificates for the Trust II Preferred Securities to the Property Trustee. Any such certificates not so surrendered for exchange will be deemed to represent a Like Amount of the Series II Trust Debt Securities, accruing
interest as provided in the Trust II Agreement, and until such certificates are so surrendered, no payments of interest or principal will be made with respect to such Series II Trust Debt Securities). Upon such exchange, the Trust Debt Securities in
definitive registered form so exchanged shall be cancelled by the Trustee. The terms and provisions contained in the Series II Trust Debt Securities shall constitute, and are hereby expressly made, a part of this Indenture. The Company and the
Trustee, by their execution and delivery of this Indenture, expressly agree to such terms and provisions and to be bound thereby. 
  

 9 

 (b)    The aggregate principal amount of Series II Trust Debt Securities outstanding
at any time may not exceed $103,100,000 except as provided in Section 2.09 hereof. The Series II Trust Debt Securities shall be authenticated and delivered upon delivery to the Trustee of items specified in Section 2.04(d) hereof. 
  
 (c)    The Stated Maturity Date of the Series II Trust
Debt Securities is September 15, 2043. 
  
 (d)    The Series II Trust Debt Securities shall bear interest at an annual rate of 7.70%. The Interest Payment Dates for the Series II Trust Debt Securities shall be March 31, June 30, September 30 and December 31 of
each year, commencing September 30, 2003. In the event that any date on which interest is payable on the Series II Trust Debt Securities is not a Business Day, then payment of interest payable on such date will be made on the next day which is a
Business Day (and without any interest or other payment in respect of any such delay), except that if such Business Day is in the next succeeding calendar year, such payment shall be made on the immediately preceding Business Day, in each case with
the same force and effect as if made on such date. The Regular Record Date for each Interest Payment Date for the Series II Trust Debt Securities shall be the 15th day (whether or not a Business Day) preceding the applicable Interest Payment Date,
provided that if Trust II is the sole Holder of the Series II Trust Debt Securities or the Series II Trust Debt Securities are issued in book-entry-only form, the Regular Record Date shall be the close of business on the Business Day immediately
preceding such Interest Payment Date. 
  
 Each Series II Trust
Debt Security shall bear interest from its Issue Date or from the most recent Interest Payment Date to which interest has been paid or duly provided for with respect to such Series II Trust Debt Security; except that, so long as there is no existing
Defaulted Interest (as defined in Section 2.03 hereof) or Extension Period on the Series II Trust Debt Securities, any Series II Trust Debt Security authenticated by the Trustee between the Regular Record Date for any Interest Payment Date and such
Interest Payment Date shall bear interest from such Interest Payment Date. Each Series II Trust Debt Security shall be dated the date of its authentication. 
  
 Overdue principal of and interest on any Series II Trust Debt Security and interest which has been deferred pursuant to Section 4.01(b) hereof shall bear
interest (to the extent that the payment of such interest shall be legally enforceable) at a rate per annum equal to the interest rate per annum payable on such Series II Trust Debt Security. 
  
 During any time that the Property Trustee II is the holder of the Series II
Trust Debt Securities, the Company shall pay additional amounts on such Series II Trust Debt Securities as may be necessary in order that the Distribution (as defined in the Trust II Agreement) then due and payable by Trust II on its Preferred Trust
Securities shall not be reduced as a result of any additional taxes, duties and other governmental charges of whatever nature (other than withholding taxes) to which Trust II has become subject. 
  
 (e)    The Series II Trust Debt Securities shall be
issuable only in registered form without coupons and only in denominations of $25 and any integral multiple thereof. 
  

 10 

 (f)    The maximum Extension Period for the Series II Trust Debt Securities shall be
five years consisting of 20 consecutive quarterly periods. 
  
 2.03    Payment of Principal and Interest. 
  
 Unless otherwise specified pursuant to Section 2.01(d), interest on the Trust Debt Securities shall be computed on the basis of a 360-day year composed of twelve 30-day months, and for any period shorter than thirty
days, interest will be computed on the basis of the actual number of days elapsed in such period. 
  
 Unless otherwise provided with respect to a series of Trust Debt Securities, 
  
 (i)    the principal and Redemption Price of and interest on each Trust Debt Security
shall be payable in such coin or currency of the United States of America as at the time of payment is legal tender for the payment of public and private debts; 
  

(ii)    the principal and Redemption Price of any Trust Debt Security and interest payable on the Stated Maturity
Date (if other than an Interest Payment Date) or Redemption Date shall be payable in immediately available funds upon surrender of such Trust Debt Security at the office or agency of any Paying Agent therefor; and 
  
 (iii)    interest on any Trust Debt
Security shall be paid on each Interest Payment Date therefor to the Holder thereof at the close of business on the Record Date therefor, such interest to be payable by check mailed to the address of the Person entitled thereto as such address
appears on the Register; provided however, that (1) at the written request of the Holder of at least $10,000,000 aggregate principal amount of Trust Debt Securities received by the Registrar not later than the Regular Record Date for such Interest
Payment Date, interest accrued on such Trust Debt Security will be payable by wire transfer within the continental United States in immediately available funds to the bank account number of such Holder specified in such request and entered on the
Register by the Registrar and (2) payments made in respect of global Trust Debt Securities shall be made in immediately available funds to the Depositary. 
  
 Except as specified pursuant to Section 2.01 or Section 4.01(b) hereof, interest on any Trust Debt Security which is payable, and is punctually paid or
duly provided for, on any Interest Payment Date shall be paid to the Person in whose name that Trust Debt Security (or one or more Predecessor Trust Debt Securities) is registered at the close of business on the Regular Record Date for such
interest. Any interest on any Trust Debt Security which is payable, but is not punctually paid or duly provided for, on any Interest Payment Date (herein called “Defaulted Interest”) shall forthwith cease to be payable to the Holder on the
relevant Regular Record Date by virtue of having been such Holder, and such Defaulted Interest may be paid by the Company, at its election in each case, as provided in Clause (1) and (2) below: 
  
 (1)    The Company may elect to make payment of any
Defaulted Interest to the Persons in whose names the Trust Debt Securities (or their respective Predecessor Trust Debt 
  

 11 

 Securities) are registered at the close of business on a Special Record Date for the payment of such Defaulted Interest,
which shall be fixed in the following manner. The Company shall, not less than 15 Business Days prior to the date of the proposed payment, notify the Trustee and the Paying Agent in writing of the amount of Defaulted Interest proposed to be paid on
each Trust Debt Security and the date of the proposed payment, and at the same time the Company shall deposit with the Paying Agent an amount of money equal to the aggregate amount proposed to be paid in respect of such Defaulted Interest or shall
make arrangements satisfactory to the Paying Agent for such deposit prior to the date of the proposed payment, such money when deposited to be held in trust for the benefit of the Persons entitled to such Defaulted Interest as in this Clause
provided. The Special Record Date for the payment of such Defaulted Interest shall be the close of business on the tenth calendar day prior to the date of the proposed payment. The Trustee shall, in the name and at the expense of the Company, cause
notice of the proposed payment of such Defaulted Interest and the Special Record Date therefor to be given to the Holders thereof, not less than 7 calendar days prior to such Special Record Date. Notice of the proposed payment of such Defaulted
Interest and the Special Record Date therefor having been given, such Defaulted Interest shall be paid to the Persons in whose names the Trust Debt Securities (or their respective Predecessor Trust Debt Securities) are registered at the close of
business on such Special Record Date and shall no longer be payable pursuant to the following Clause (2). 
  
 (2)    The Company may make payment of any Defaulted Interest on the Trust Debt Securities in any other lawful manner not inconsistent
with the requirements of any securities exchange on which such Trust Debt Securities may be listed, and upon such notice as may be required by such exchange, if, after notice given by the Company to the Trustee and the Paying Agent of the proposed
payment pursuant to this Clause, such manner of payment shall be deemed practicable by the Paying Agent. 
  
 Subject to the foregoing provisions of this Section, each Trust Debt Security delivered under this Indenture upon registration of transfer of or in
exchange for or in lieu of any other Trust Debt Security shall carry the rights to interest accrued and unpaid, and to accrue, which were carried by such other Trust Debt Security. 
  
 2.04    Execution, Authentication and Delivery. 
  
 (a)    The Trust Debt Securities shall be executed on
behalf of the Company by its Chairman, its President or one of its Vice Presidents, under its corporate seal imprinted or reproduced thereon and attested by its Secretary or one of its Assistant Secretaries. The signature of any such Officer on the
Trust Debt Securities may be manual or facsimile. 
  
 (b)    Trust Debt Securities bearing the manual or facsimile signatures of individuals who were at any time the proper Officers of the Company shall bind the Company, notwithstanding that such individuals or any of them
have ceased to hold such offices prior to the authentication and delivery of such Trust Debt Securities or did not hold such offices at the date of such Trust Debt Securities. 
  
 (c)    No Trust Debt Security shall be entitled to any benefit under this Indenture or be valid or
obligatory for any purpose unless there appears on such Trust Debt Security a Certificate 
  

 12 

 of Authentication duly executed by the Trustee by manual signature of a Responsible Officer, and such Certificate of
Authentication upon any Trust Debt Security shall be conclusive evidence, and the only evidence, that such Trust Debt Security has been duly authenticated and made available for delivery hereunder. 
  
 (d)    The Trustee shall authenticate and deliver Trust
Debt Securities of a series, for original issue, at one time or from time to time in accordance with the Company Order referred to below, upon receipt by the Trustee of: 
  
 (1)    a Board Resolution approving the form or forms and terms of such Trust Debt
Securities; 
  
 (2)    a
Company Order requesting the authentication and delivery of such Trust Debt Securities and stating the identity of the Trust and the aggregate liquidation amount of the Trust Securities to be issued concurrently with such Trust Debt Securities;

  
 (3)    unless previously
delivered, this Indenture or a supplemental indenture hereto setting forth the form of such Trust Debt Securities and establishing the terms thereof; 
  
 (4)    the Trust Debt Securities of such series, executed on behalf of the Company in accordance with Section 2.04(a)
hereof; 
  
 (5)    an Opinion
of Counsel to the effect that: 
  
 (i)    the form or forms of such Trust Debt Securities have been duly authorized by the Company and have been established in conformity with the provisions of this Indenture; and 
  
 (ii)    such Trust Debt Securities, when
authenticated and delivered by the Trustee and issued and delivered by the Company in the manner and subject to any conditions specified in such Opinion of Counsel, will have been duly issued under this Indenture and will constitute valid and
legally binding obligations of the Company, entitled to the benefits provided by this Indenture, and enforceable in accordance with their terms, subject, as to enforcement to laws relating to or affecting generally the enforcement of creditors’
rights, including, without limitation, bankruptcy and insolvency laws and to general principles of equity (regardless of whether such enforceability is considered in a proceeding in equity or at law); and 
  
 (iii)    that this Indenture or any
supplemental indenture referred to in clause (3) above has been duly authorized, executed and delivered by the Company and is a valid instrument legally binding upon the Company, enforceable in accordance with its terms, subject as to enforcement to
laws relating to or affecting creditors’ rights, including, without limitation, bankruptcy and insolvency laws and to general principles of equity (regardless of whether such enforceability is considered in a proceeding in equity or at law);
and 
  

 13 

 (iv)    that all consents, approvals and orders of any commission,
governmental authority or agency required in connection with the issuance and delivery of such Trust Debt Securities have been obtained. 
  
 (e)    an Officer’s Certificate certifying that no Default or Event of Default has occurred and is continuing. 
  
 (f)    The Trustee shall act as the initial
authenticating agent. Thereafter, the Trustee may appoint an authenticating agent with the consent of the Company, which consent shall not be unreasonably withheld. An authenticating agent may authenticate Trust Debt Securities whenever the Trustee
may do so. Each reference in this Indenture to authentication by the Trustee includes authentication by such agent. The Company shall pay any authenticating agent appointed by the Trustee reasonable compensation for its services. The provisions set
forth in Section 7.02, Section 7.03, Section 7.04 and Section 7.07 hereof shall be applicable to any authenticating agent. 
  
 2.05    Registrar and Paying Agent. 
  
 The Company shall maintain or cause to be maintained, within or outside the State of Illinois, an office or agency where the Trust Debt Securities may be
presented for registration of transfer or for exchange (“Registrar”), a Paying Agent at whose office the Trust Debt Securities may be presented or surrendered for payment, and an office or agency where notices and demands to or upon the
Company in respect of the Trust Debt Securities and this Indenture may be served. The Registrar shall keep a register (the “Register”) of the Trust Debt Securities and of their transfer and exchange. The Company may have one or more
co-Registrars and one or more additional Paying Agents. The term Registrar includes any additional registrar and the term Paying Agent includes any additional paying agent. The corporate office of the Trustee in Chicago, Illinois shall initially be
the Registrar for each series of Trust Debt Securities and agent for service of notice or demands on the Company, and the Trustee shall initially be the Paying Agent for each series of Trust Debt Securities. 
  
 The Company shall enter into an appropriate agency agreement with any
Registrar, Paying Agent or co-Registrar (if not the Company or the Trustee or an affiliate of the Trustee). The agreement shall implement the provisions of this Indenture that relate to such agent. The Company shall give prompt written notice to the
Trustee and to the Holders of any change of location of such office or agency. If at any time the Company shall fail to maintain or cause to be maintained any such required office or agency or shall fail to furnish the Trustee with the address
thereof, such presentations, surrenders, notices and demands may be made or served at the address of the Trustee set forth in Section 11.02 hereof. The Company shall notify the Trustee of the name and address of any such agent. If the Company fails
to maintain a Registrar, Paying Agent or agent for service of notices or demands, the Trustee shall act as such and shall be entitled to appropriate compensation therefor pursuant to Section 7.07 hereof. The Company or any Affiliate of the Company
may act as Paying Agent, Registrar or co-Registrar or agent for service of notices and demands. 
  
 The Company may also from time to time designate one or more other offices or agencies where the Trust Debt Securities may be presented or surrendered for
any or all such purposes and 
  

 14 

 may from time to time rescind such designations. The Company will give prompt written notice to the Trustee and to the
Holders of any such designation or rescission and of any change in location of any such other office or agency. 
  
 2.06    Paying Agent to Hold Money in Trust. 
  
 Except as otherwise provided herein, prior to 10:00 a.m. on each due date of the principal of and premium (if any) and
interest on any Trust Debt Security, the Company shall deposit with the Paying Agent a sum of money sufficient to pay such principal, premium (if any) and interest so becoming due. The Company shall require each Paying Agent (other than the Trustee
or the Company) to agree in writing that such Paying Agent shall hold in trust for the benefit of Holders or the Trustee all money held by the Paying Agent for the payment of principal of and premium (if any) and interest on the Trust Debt
Securities and shall notify the Trustee of any Default by the Company in making any such payment. At any time during the continuance of any such Default, the Paying Agent shall, upon the request of the Trustee, forthwith pay to the Trustee all money
so held in trust and account for any money disbursed by it. The Company at any time may require a Paying Agent to pay all money held by it to the Trustee and to account for any money disbursed by it. Upon doing so, the Paying Agent shall have no
further liability for the money so paid over to the Trustee. If the Company, a Subsidiary or an Affiliate of either of them acts as Paying Agent, it shall segregate the money held by it as Paying Agent and hold it as a separate trust fund.

  
 2.07    Holder Lists. 

 
 The Trustee shall preserve in as current a form as is reasonably
practicable the most recent list available to it of the names and addresses of Holders. If the Trustee is not the Registrar, the Company shall cause to be furnished to the Trustee on or before the Record Date for each Interest Payment Date and at
such other times as the Trustee may request in writing, within five Business Days of such request, a list, in such form as the Trustee may reasonably require of the names and addresses of Holders. 
  
 2.08    Transfer and Exchange. 
  
 When Trust Debt Securities are presented to the Registrar or a co-Registrar
with a request to register the transfer or to exchange them for an equal principal amount of Trust Debt Securities of the same series of other authorized denominations, the Registrar shall register the transfer or make the exchange as requested if
its reasonable requirements for such transactions are met. To permit registrations of transfer and exchanges, the Company shall execute and the Trustee shall authenticate Trust Debt Securities, all at the Registrar’s request. 
  
 Every Trust Debt Security presented or surrendered for registration of
transfer or for exchange shall (if so required by the Company or the Registrar) be duly endorsed, or be accompanied by a written instrument of transfer in form satisfactory to the Registrar duly executed by the Holder or his attorney duly authorized
in writing. 
  
 The Company shall not require payment of a service
charge for any registration of transfer or exchange of Trust Debt Securities, but the Company may require payment of a sum sufficient to pay all taxes, assessments or other governmental charges that may be imposed in 
  

 15 

 connection with the registration of the transfer or exchange of Trust Debt Securities from the Holder requesting such
transfer or exchange (other than any exchange of a temporary Trust Debt Security for a definitive Trust Debt Security not involving any change in ownership). 
  
 The Company shall not be required to make, and the Registrar need not register, transfers or exchanges of (a) any Trust Debt Security for a period
beginning at the opening of business 15 days before the mailing of a notice of redemption of Trust Debt Securities and ending at the close of business on the day of such mailing or (b) any Trust Debt Security selected, called or being called for
redemption, except, in the case of any Trust Debt Security to be redeemed in part, the portion thereof not to be redeemed. 
  
 2.09    Replacement Trust Debt Securities. 
  
 If (a) any mutilated Trust Debt Security is surrendered to the Company or the Trustee, or (b) the Company and the Trustee
receive evidence to their satisfaction of the destruction, loss or theft of any Trust Debt Security, and there is delivered to the Company and the Trustee such security or indemnity as may be required by them to save each of them harmless, then, in
the absence of notice to the Company or the Trustee that such Trust Debt Security has been acquired by a bona fide purchaser, the Company shall execute in exchange for any such mutilated Trust Debt Security or in lieu of any such destroyed, lost or
stolen Trust Debt Security, a new Trust Debt Security of the same series and of like tenor and principal amount, bearing a number not contemporaneously outstanding, and the Trustee shall authenticate and make such new Trust Debt Security available
for delivery. 
  
 In case any such mutilated, destroyed, lost or
stolen Trust Debt Security has become or is about to become due and payable, or is about to be redeemed by the Company pursuant to Article 3 hereof, the Company in its discretion may, instead of issuing a new Trust Debt Security, pay or purchase
such Trust Debt Security, as the case may be. 
  
 Upon the
issuance of any new Trust Debt Securities under this Section 2.09, the Company 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) in connection therewith. 
  
 Every new Trust Debt Security issued pursuant to this Section 2.09 in lieu of any mutilated, destroyed, lost or stolen Trust Debt Security shall constitute an original additional contractual obligation of the Company (whether or not the
mutilated, destroyed, lost or stolen Trust Debt Security shall be at any time enforceable) and shall be entitled to all benefits of this Indenture equally and ratably with any and all other Trust Debt Securities duly issued hereunder. 
  
 The provisions of this Section 2.09 are exclusive and shall preclude (to the
extent lawful) all other rights and remedies with respect to the replacement or payment of mutilated, destroyed, lost or stolen Trust Debt Securities. 
  
 2.10    Outstanding Trust Debt Securities; Determinations of Holders’ Action. 
  
 Trust Debt Securities outstanding at any time are all the Trust Debt
Securities authenticated by the Trustee except for those canceled by it, those delivered to it for cancellation, 
  

 16 

 those mutilated, destroyed, lost or stolen Trust Debt Securities referred to in Section 2.09 hereof, those redeemed by
the Company pursuant to Article 3 hereof, and those described in this Section 2.10 as not outstanding. A Trust Debt Security does not cease to be outstanding because the Company or a Subsidiary or Affiliate thereof holds the Trust Debt Security;
provided, however, that in determining whether the Holders of the requisite principal amount of Trust Debt Securities have given or concurred in any request, demand, authorization, direction, notice, consent or waiver hereunder, Trust Debt
Securities owned by the Company or a Subsidiary or Affiliate (other than any Trust so long as any of the Preferred Trust Securities of such Trust are outstanding) shall be disregarded and deemed not to be outstanding. 
  
 Subject to the foregoing, only Trust Debt Securities outstanding at the time
of such determination shall be considered in any such determination (including determinations pursuant to Articles 3, 6 and 9). 
  
 If a Trust Debt Security is replaced pursuant to Section 2.09 hereof, it ceases to be outstanding unless the Trustee receives proof satisfactory to it
that the replaced Trust Debt Security is held by a bona fide purchaser. 
  
 If the Paying Agent (other than the Company) holds, in accordance with this Indenture, at the Stated Maturity Date or on a Redemption Date, money sufficient to pay the Trust Debt Securities payable on that date, then immediately on the
Stated Maturity Date or such Redemption Date, as the case may be, such Trust Debt Securities shall cease to be outstanding, and interest, if any, on such Trust Debt Securities shall cease to accrue. 
  
 2.11    Temporary Trust Debt Securities.

  
 The Company may execute temporary Trust Debt Securities,
and upon the Company’s Order, the Trustee shall authenticate and make such temporary Trust Debt Securities available for delivery. Temporary Trust Debt Securities shall be printed, lithographed, typewritten, mimeographed or otherwise produced,
in any authorized denomination, in the same series and principal amount and of like tenor as the definitive Trust Debt Securities in lieu of which they are issued and with such appropriate insertions, omissions, substitutions and other variations as
the Officers of the Company executing such Trust Debt Securities may determine, as conclusively evidenced by their execution of such Trust Debt Securities. 
  
 After the preparation of definitive Trust Debt Securities, the temporary Trust Debt Securities shall be exchangeable for definitive Trust Debt Securities
of the same series upon surrender of the temporary Trust Debt Securities at the office or agency of the Company designated for such purpose pursuant to Section 2.05 hereof, without charge to the Holders thereof. Upon surrender for cancellation of
any one or more temporary Trust Debt Securities, the Company shall execute a like principal amount of definitive Trust Debt Securities of the same series of authorized denominations, and the Trustee, upon receipt of a Company Order, shall
authenticate and make such Trust Debt Securities available for delivery in exchange therefor. Until so exchanged, the temporary Trust Debt Securities shall in all respects be entitled to the same benefits under this Indenture as definitive Trust
Debt Securities. 
  

 17 

 2.12    Book-Entry System. 
  
 In order to utilize a book-entry-only system for all or any portion of the
Trust Debt Securities of any series, all or a portion of the Trust Debt Securities of any series may be issued in the form of one or more fully registered Trust Debt Securities of the same series for the aggregate principal amount of such Trust Debt
Securities of each Issue Date, interest rate and Stated Maturity Date (a “global Trust Debt Security”), which global Trust Debt Security shall be registered in the name of the depositary (the “Depositary”) selected by the Company
or in the name of such Depositary’s nominee. Each global Trust Debt Security shall be delivered by the Trustee to the Depositary or pursuant to the Depositary’s instruction. 
  
 Notwithstanding any other provision of this Section 2.12 or of Section 2.08 hereof, a global Trust Debt Security may be
transferred in whole but not in part and in the manner provided in Section 2.08 hereof, only by a nominee of the Depositary for such series, or by the Depositary or any such nominee of a successor Depositary for such series selected or approved by
the Company or to a nominee of such successor Depositary. 
  
 If
(i) at any time the Depositary for global Trust Debt Securities of any series of Trust Debt Securities notifies the Company that it is unwilling or unable to continue as Depositary for such global Trust Debt Securities or if at any time the
Depositary for such global Trust Debt Securities shall no longer be registered or in good standing under the Exchange Act or other applicable statute or regulation, and a successor Depositary for such global Trust Debt Securities is not appointed by
the Company within 90 days after the Company receives such notice or becomes aware of such condition, as the case may be, (ii) the Company determines in its sole discretion, that the Trust Debt Securities of any series shall no longer be represented
by one or more global Trust Debt Securities and delivers to the Trustee an Officer’s Certificate evidencing such determination or (iii) an Event of Default occurs and is continuing, then the provisions of this Section 2.12 shall no longer apply
to the Trust Debt Securities of such series. In such event, the Company will execute and the Trustee, upon receipt of an Officer’s Certificate evidencing such determination by the Company, will authenticate and deliver Trust Debt Securities of
such series and of like tenor in definitive registered form, in authorized denominations, and in aggregate principal amount equal to the principal amount of the global Trust Debt Securities of such series in exchange for such global Trust Debt
Securities. Upon the exchange of global Trust Debt Securities for such Trust Debt Securities in definitive registered form without coupons, in authorized denominations, the global Trust Debt Securities shall be cancelled by the Trustee. Such Trust
Debt Securities in definitive registered form issued in exchange for global Trust Debt Securities pursuant to this Section 2.12 shall be registered in such names and in such authorized denominations as the Depositary, pursuant to instructions from
its direct or indirect participants or otherwise, shall instruct the Trustee. The Trustee shall deliver such Trust Debt Securities to the Persons in whose names such Trust Debt Securities are so registered. 
  
 Except as provided above, owners of beneficial interests in a global Trust
Debt Security shall not be entitled to receive physical delivery of Trust Debt Securities in definitive form and will not be considered the Holders thereof for any purpose under this Indenture. 
  
 Members of or participants in the Depositary shall have no rights under this
Indenture with respect to any global Trust Debt Security held on their behalf by the Depositary, and such 
  

 18 

 Depositary or its nominee, as the case may be, may be treated by the Company, the Trustee, and any agent of the Company
or the Trustee as the Holder of such global Trust Debt Securities for all purposes whatsoever. Notwithstanding the foregoing, nothing herein shall prevent the Company, the Trustee, or any agent of the Company or the Trustee, from giving effect to
any written certification proxy or other authorization furnished by the Depositary or impair, as between the Depositary and its members or participants, the operation of customary practices governing exercise of the rights of a Holder of any Trust
Debt Security, including without limitation the granting of proxies or other authorization of participants to give or take any request, demand, authorization, direction, notice, consent, waiver or other action which a Holder is entitled to give or
take under this Indenture. 
  
 2.13    Cancellation. 
  
 All
Trust Debt Securities surrendered for payment, redemption by the Company pursuant to Article 3 hereof or registration of transfer or exchange shall, if surrendered to any Person other than the Trustee, be delivered to the Trustee and shall be
promptly canceled by the Trustee. The Company may at any time deliver to the Trustee for cancellation any Trust Debt Securities previously authenticated and made available for delivery hereunder which the Company may have acquired in any manner
whatsoever, and all Trust Debt Securities so delivered shall be promptly canceled by the Trustee. The Company may not reissue or issue new Trust Debt Securities to replace Trust Debt Securities it has paid or delivered to the Trustee for
cancellation. No Trust Debt Securities shall be authenticated in lieu of or in exchange for any Trust Debt Securities canceled as provided in this Section 2.13, except as expressly permitted by this Indenture. All canceled Trust Debt Securities held
by the Trustee shall be disposed of in accordance with its customary procedures. 
  
  
 ARTICLE III 
 REDEMPTION

  
 3.01    Redemption: Notice to
Trustee. 
  
 (a)    The Series II Trust
Debt Securities are subject to redemption prior to maturity as provided therein. 
  
 (b)    The redemption terms for any additional series of Trust Debt Securities shall be as specified in the supplemental indenture creating such series of Trust Debt Securities. 
  
 (c)    If any or all of the Trust Debt Securities are to
be redeemed pursuant to Section 3.01 (a) or (b) hereof, the Company shall deliver to the Trustee at least 45 days prior to the Redemption Date a Company Order specifying the series and principal amount of Trust Debt Securities to be redeemed and the
Redemption Date and Redemption Price for such Trust Debt Securities. Such Company Order shall be accompanied by a Board Resolution authorizing such redemption. If the Trust Debt Securities of a series are held by a Trust, the Company shall also
deliver a copy of such Company Order to the Property Trustee for such Trust. 
  

 19 

 3.02    Selection of Trust Debt Securities to be Redeemed. 
  
 If less than all the outstanding Trust Debt Securities of a series are to be
redeemed at any time, the Trustee shall select the Trust Debt Securities of such series to be redeemed by lot or by any other method the Trustee considers appropriate. The Trustee shall make the selection at least 30 but not more than 60 days before
the Redemption Date from outstanding Trust Debt Securities of such series not previously called for redemption. Provisions of this Indenture that apply to Trust Debt Securities called for redemption also apply to portions of Trust Debt Securities
called for redemption. The Trustee shall notify the Company promptly of the Trust Debt Securities or portions of Trust Debt Securities to be redeemed. 
  
 3.03    Notice of Redemption. 
  
 At least 30 days but not more than 60 days before the Redemption Date, the Trustee, in the Company’s name and at the Company’s expense, shall
mail or cause to be mailed a notice of redemption by first-class mail, postage prepaid, to each Holder of Trust Debt Securities to be redeemed at such Holder’s last address as it appears in the Register. 
  
 The notice of redemption shall identify the Trust Debt Securities to be
redeemed, including its CUSIP number, the provision of the Trust Debt Securities or this Indenture pursuant to which the Trust Debt Securities called for redemption are being redeemed and shall state: 
  
 (1)    the Redemption Date; 

 
 (2)    the Redemption Price;

  
 (3)    the name and
address of the Paying Agent; 
  
 (4)    that payment of the Redemption Price of Trust Debt Securities called for redemption will be made only upon surrender of such Trust Debt Securities to the Paying Agent; 
  
 (5)    if fewer than all the outstanding
Trust Debt Securities of any series are to be redeemed, the identification and principal amounts of the particular Trust Debt Securities to be redeemed and that, on and after the Redemption Date, upon surrender of such Trust Debt Securities, a new
Trust Debt Security or Trust Debt Securities of the same series and of like tenor and in a principal amount equal to the unredeemed portion thereof will be issued; and 
  
 (6)    that, unless the Company defaults in paying the Redemption Price of the Trust
Debt Securities called for redemption, plus accrued interest thereon to the Redemption Date, interest will cease to accrue on such Trust Debt Securities on and after the Redemption Date. 
  
 Any notice of redemption given in the manner provided herein shall be conclusively presumed to have been given, whether or
not such notice is actually received. Failure to mail any notice or defect in the mailed notice or the mailing thereof in respect of any Trust Debt Security shall not affect the validity of the redemption of any other Trust Debt Security.

  

 20 

 3.04    Effect of Notice of Redemption. 
  
 After notice of redemption has been given, Trust Debt Securities called for
redemption shall become due and payable on the Redemption Date and at the Redemption Price and from and after the Redemption Date (unless the Company shall default in the payment of the Redemption Price and accrued interest), such Trust Debt
Securities shall cease to bear interest. Upon the later of the Redemption Date and the date such Trust Debt Securities are surrendered to the Paying Agent, such Trust Debt Securities shall be paid the Redemption Price, plus accrued interest to the
Redemption Date, provided that installments of interest on Trust Debt Securities with an Interest Payment Date which is on or prior to the Redemption Date shall be payable to the Holders of such Trust Debt Securities, or one or more Predecessor
Trust Debt Securities, registered as such at the close of business on the Regular Record Dates therefor according to their terms and provisions. 
  
 3.05    Deposit of Redemption Price. 
  

Prior to 10:00 a.m. on the Redemption Date, the Company shall deposit with the Paying Agent (or if the Company or an Affiliate is the Paying Agent,
shall segregate and hold in trust or cause such Affiliate to segregate and hold in trust) money sufficient to pay the Redemption Price of, and accrued interest on, all Trust Debt Securities to be redeemed on that Redemption Date. The Paying Agent
shall return to the Company any money in excess of the amount sufficient to pay the Redemption Price of, and accrued interest on, all Trust Debt Securities to be redeemed and any interest accrued on the amount deposited pursuant to this Section
3.05. 
  
 3.06    Trust Debt Securities
Redeemed in Part. 
  
 Upon surrender of a Trust Debt Security
that is redeemed in part, the Trustee shall authenticate for the Holder a new Trust Debt Security of the same series and in a principal amount equal to the unredeemed portion of such Trust Debt Security. 
  
  
 ARTICLE IV 
 COVENANTS 
  
 4.01    Payment of Trust Debt Securities. 
  
 (a)    The Company shall pay the principal of and premium, if any, and interest (including interest
accruing during an Extension Period and/or on or after the filing of a petition in bankruptcy or reorganization relating to the Company, whether or not a claim for post-filing interest is allowed in such proceeding) on the Trust Debt Securities on
or prior to the dates and in the manner provided in such Trust Debt Securities or pursuant to this Indenture. An installment of principal, premium, if any, or interest shall be considered paid on the applicable due date if on such date the Trustee
or the Paying Agent holds, in accordance with this Indenture, money sufficient to pay all of such installment then due. With respect to any Trust Debt Security, the Company shall pay interest on overdue principal and interest on overdue installments
of interest (including interest accruing during an Extension Period and/or on or after the filing of a petition in bankruptcy or reorganization relating to the Company, whether or not a claim for post-filing interest is allowed in such proceeding),
to the extent lawful, at the rate per annum borne by such 
  

 21 

 Trust Debt Security, compounded quarterly. Interest on overdue interest shall accrue from the date such amounts become
overdue. 
  
 (b)    Notwithstanding the
provisions of Section 4.01(a) hereof or any other provision herein to the contrary, the Company shall have the right in its sole and absolute discretion at any time and from time to time while the Trust Debt Securities of any series are outstanding,
so long as no Event of Default with respect to such series of Trust Debt Securities has occurred and is continuing, to defer payments of interest by extending the interest payment period for such series of Trust Debt Securities for the Extension
Period, if any, for such series of Trust Debt Securities, provided that such Extension Period shall not extend beyond the Stated Maturity Date or Redemption Date of any Trust Debt Security of such series, and provided further that at the end of each
Extension Period the Company shall pay all interest then accrued and unpaid (together with interest thereon to the extent permitted by applicable law at the rate per annum then borne by such Trust Debt Securities). Prior to the termination of an
Extension Period, the Company may shorten or may further extend the interest payment period for such series of Trust Debt Securities, provided that such Extension Period together with all such previous and further extensions may not exceed the
maximum duration of the Extension Period for such series of Trust Debt Securities or extend beyond the Stated Maturity Date or Redemption Date of any Trust Debt Security of such series. The Company shall give the Trustee notice of the Company’s
election to begin an Extension Period for any series of Trust Debt Securities and any shortening or extension thereof at least one Business Day prior to the date the notice of the record or payment date of the related distribution on the Preferred
Trust Securities issued by the Trust which is the Holder of the Trust Debt Securities of such series or the date payment of interest on such Trust Debt Securities is required to be given to any national securities exchange on which such Preferred
Trust Securities or Trust Debt Securities are then listed or other applicable self-regulatory organization, but in any event not less than two Business Days prior to the Record Date fixed by the Company for the payment of such interest. The Company
shall give or cause the Trustee to give notice (a form of which shall be provided by the Company to the Trustee) of the Company’s election to begin an Extension Period to the Holders by first class mail, postage prepaid. 
  
 4.02    Prohibition Against Dividends, etc.

  
 The Company shall not (a) declare or pay any dividend on,
or redeem, purchase, acquire or make a liquidation payment with respect to, any of its Capital Stock, (b) pay principal, interest or premium, if any, on, or repay, repurchase or redeem any debt securities that rank pari passu with or junior to the
Trust Debt Securities or (c) make any guarantee payments with respect to any outstanding Preferred Trust Securities issued by any Trust, (i) during an Extension Period, (ii) if at such time there shall have occurred and is continuing any Default or
Event of Default, or (iii) if the Company shall be in default with respect to its payment or other obligations under any Guarantee Agreement. 
  
 4.03    SEC Reports. 
  
 The Company shall file with the Trustee, within 15 days after it files them with the SEC, copies of its annual report and of the information, documents
and other reports (or copies of such portions of any of the foregoing as the SEC may by rules and regulations prescribe) which the 
  

 22 

 Company is required to file with the SEC pursuant to Section 13 or 15(d) of the Exchange Act. If the Company is not
subject to the reporting requirements of Section 13 or 15(d) of the Exchange Act, the Company shall file with the Trustee such information, documents and other reports (or copies of such portions of any of the foregoing as the SEC may by rules and
regulations prescribe) which are specified in Sections 13 or 15(d) of the Exchange Act. The Company shall also comply with the provisions of Section 314(a) of the TIA. Delivery of such reports, information and documents to the Trustee is for
informational purposes only and the Trustee’s receipt of such shall not constitute constructive notice of any information contained therein or determinable from information contained therein, including the Company’s compliance with any of
its covenants hereunder (as to which the Trustee is entitled to conclusively rely exclusively on Officer’s Certificates). 
  
 4.04    Compliance Certificates. 
  
 (a)    The Company shall deliver to the Trustee, within 90 days after the end of each of the Company’s fiscal years, an
Officer’s Certificate stating whether or not the signer knows of any Default or Event of Default. Such certificate shall contain a certification from the principal executive officer, principal financial officer or principal accounting officer
of the Company as to his or her knowledge of the Company’s compliance with all conditions and covenants under this Indenture. For purposes of this Section 4.04(a), such compliance shall be determined without regard to any period of grace or
requirement of notice provided under this Indenture. If such Officer does know of such a Default or Event of Default, the Officer’s Certificate shall describe any such Default or Event of Default, and its status. Such Officer’s Certificate
need not comply with Sections 11.04 and 11.05 hereof. 
  
 (b)      The Company shall deliver to the Trustee any information reasonably requested by the Trustee in connection with the compliance by the Trustee or the Company with the TIA. 
  
 4.05    Further Instruments and Acts. 

 
 The Company shall execute and deliver such further instruments and do
such further acts as may be reasonably requested by the Trustee or as necessary or proper to carry out more effectively the purposes of this Indenture. 
  
 4.06    Payments for Consents. 
  
 Neither the Company nor any Subsidiary shall, directly or indirectly, pay or cause to be paid any consideration, whether by way of interest, fee or
otherwise, to any Holder of any Trust Debt Securities for or as an inducement to any consent, waiver or amendment of any of the terms or provisions of this Indenture or the Trust Debt Securities unless such consideration is offered to be paid or
agreed to be paid to all Holders of the Trust Debt Securities who so consent, waive or agree to amend in the time frame set forth in the documents soliciting such consent, waiver or agreement. 
  
 4.07    Payment of Expenses of Trust. 

 
 The Company covenants for the benefit of the Holders of the Trust Debt
Securities to pay all of the obligations, costs and expenses of the applicable Trust in accordance with the 
  

 23 

 applicable Trust agreement and to pay the taxes of such Trust in accordance with such Trust agreement in order to permit
such Trust to make distributions on and redemptions of its Preferred Trust Securities in accordance with their terms. 
  
 ARTICLE V 
 SUCCESSOR CORPORATION

  
 5.01    When Company May Merge,
Etc. 
  
 The Company may not consolidate with or merge with
or into, or sell, convey, transfer or lease its properties and assets as an entirety or substantially as an entirety (either in one transaction or a series of transactions) to, any Person unless: 
  
 (1)    the Successor if other than the
Company (a) is a corporation organized and existing under the laws of the United States of America or any State thereof or the District of Columbia, and (b) shall expressly assume by a supplemental indenture, executed and delivered to the Trustee,
in form satisfactory to the Trustee, all the obligations of the Company under the Trust Debt Securities and the Indenture; 
  
 (2)    immediately prior to and after giving effect to such transaction (and treating any Indebtedness which becomes
an obligation of the Successor Person or any Subsidiary as a result of such transaction as having been incurred by such Person or such Subsidiary at the time of such transaction), no Default or Event of Default shall have occurred and be continuing;
and 
  
 (3)    the Company
delivers to the Trustee an Officer’s Certificate and an Opinion of Counsel, each stating that such consolidation, merger, sale, conveyance, transfer or lease and such supplemental indenture comply with this Indenture. 
  
 The Successor will be the successor to the Company, and will be substituted
for, and may exercise every right and power and become the obligor on the Trust Debt Securities with the same effect as if the Successor had been named as the Company herein but, in the case of a sale, conveyance, transfer or lease of all or
substantially all of the assets of the Company, the predecessor Company will not be released from its obligation to pay the principal of and premium, if any, and interest on the Trust Debt Securities. 
  
 ARTICLE VI 
 DEFAULTS AND REMEDIES 
  
 6.01    Events of Default. 
  
 An “Event of Default” occurs with respect to the Trust Debt Securities of any series if one of the following shall have occurred and be continuing: 
  
 (1)    The Company defaults in the
payment, when due and payable, of (a) interest on any Trust Debt Security of that series and the default continues for a period of 30 days; provided, that during an Extension Period for the Trust Debt Securities of that series, failure to pay
interest on the Trust Debt Securities of that series shall not constitute 

  

 24 

 
a Default or Event of Default hereunder, or (b) the principal of or premium, if any, on any Trust Debt Securities of that series when the same becomes due
and payable on the Stated Maturity Date thereof, upon acceleration, on any Redemption Date, or otherwise; 
  
 (2)    The Company defaults in the performance of or fails to comply with any of its other covenants or agreements in
the Trust Debt Securities of that series or this Indenture or in any supplemental indenture under which the Trust Debt Securities of that series may have been issued and such failure continues for 60 days after receipt by the Company of a
“Notice of Default”; 
  
 (3)    The Company, pursuant to or within the meaning of any Bankruptcy Law: 
  
 (a)    commences a voluntary case or proceeding; 
  
 (b)    consents to the entry of an order for relief against it in an involuntary case or
proceeding; 
  
 (c)    consents to the appointment of a Custodian of it or for all or substantially all of its property, and such Custodian is not discharged within 60 days; 
  
 (d)    makes a general assignment for the benefit of its creditors; or 
  
 (e)    admits in writing its inability to
pay its debts generally as they become due; or 
  
 (4)    A court of competent jurisdiction enters an order or decree under any Bankruptcy Law that: 
  
 (a)    is for relief against the Company in an involuntary case or proceeding; 
  
 (b)    appoints a Custodian of the
Company for all or substantially all of its properties; or 
  
 (c)    orders the liquidation of the Company, 
  
 and in each case the order or decree remains unstayed and in effect for 60 days. 
  
 The foregoing will constitute an Event of Default whatever the reason for any
such Event of Default and whether it is voluntary or involuntary or is 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 under clause (2) above is not an Event of Default until (i) the
Trustee provides a “Notice of Default” to the Company or the Holders of at least 25% in aggregate principal amount of the Trust Debt Securities of that series at the time outstanding or, if that series of Trust Debt Securities is held by a
Trust, the holders of at least 25% in aggregate liquidation amount of 
  

 25 

 the outstanding Preferred Trust Securities of that Trust provide a “Notice of Default” to the Company and the
Trustee and (ii) the Company does not cure such Default within the time specified in clause (2) above after receipt of such notice. Any such notice must specify the Default, demand that it be remedied and state that such notice is a “Notice of
Default.” 
  
 6.02    Acceleration.

  
 If any Event of Default with respect to the Trust Debt
Securities of any series other than an Event of Default under clause (3) or (4) of Section 6.01 hereof occurs and is continuing, the Trustee or the Holders of at least 25% in aggregate principal amount of the Trust Debt Securities of that series
then outstanding may declare the principal of all the Trust Debt Securities of that series due and payable, provided that in the case of a series of Trust Debt Securities then held by a Trust, if upon an Event of Default with respect to the Trust
Debt Securities of that series the Trustee has or the Holders of at least 25% in aggregate principal amount of the Trust Debt Securities of that series have failed to declare the principal of the Trust Debt Securities of that series to be
immediately due and payable, the holders of at least 25% in aggregate liquidation amount of the outstanding Preferred Trust Securities of that Trust shall have such right by a notice in writing to the Company and the Trustee. If an Event of Default
specified in clause (3) or (4) of Section 6.01 hereof occurs, the principal of and interest on all the Trust Debt Securities shall ipso facto become and be immediately due and payable without any declaration or other act on the part of the Trustee
or any Holders. Upon such an acceleration, such principal, together with all interest accrued thereon, shall be due and payable immediately. 
  
 The Holders of a majority in aggregate principal amount of the Trust Debt Securities of that series at the time outstanding, in each case, by notice to
the Trustee, may rescind such an acceleration and its consequences if the rescission would not conflict with any judgment or decree and if all existing Events of Default with respect to such series of Trust Debt Securities have been cured or waived
except nonpayment of principal or interest that has become due solely because of acceleration, provided that if the principal of a series of Trust Debt Securities has been declared due and payable by the holders of the Preferred Series of a Trust,
no rescission of acceleration will be effective unless consented to by the holders of a majority in aggregate liquidation amount of the Preferred Trust Securities of that Trust. No such rescission shall affect any subsequent Default or impair any
right consequent thereto. 
  
 6.03    Other
Remedies. 
  
 If an Event of Default occurs and is continuing,
the Trustee may, in its own name or as trustee of an express trust, institute, pursue and prosecute any proceeding, including, without limitation, any action at law or suit in equity or other judicial or administrative proceeding to collect the
payment of principal of or premium, if any, or interest on the Trust Debt Securities of the series that is in default, to enforce the performance of any provision of the Trust Debt Securities of that series or this Indenture or to obtain any other
available remedy. 
  
 The Trustee may maintain a proceeding even
if it does not possess any of the Trust Debt Securities or does not produce any of the Trust Debt Securities in the proceeding. A delay or omission by the Trustee, any Holder or the holders of Preferred Trust Securities in exercising any right or
remedy accruing upon an Event of Default shall not impair such right or remedy or 
  

 26 

 constitute a waiver of, or acquiescence in, such Event of Default. No remedy is exclusive of any other remedy. All
available remedies are cumulative. 
  
 6.04    Waiver of Past Defaults. 
  
 If a Default or Event of Default with respect to a series of Trust Debt Securities has occurred and is continuing, the Holders of a majority in aggregate principal amount of the Trust Debt Securities of that series at the time outstanding,
or, if that series of Trust Debt Securities is held by a Trust, the holders of a majority in aggregate liquidation amount of the Preferred Trust Securities of that Trust, in each case by notice to the Trustee and the Company, may waive an existing
Default or Event of Default and its consequences except a Default or Event of Default in the payment of the principal of or premium, if any, or interest on any Trust Debt Security of that series. When a Default or Event of Default is waived, it is
deemed cured and shall cease to exist, but no such waiver shall extend to any subsequent or other Default or Event of Default or impair any consequent right. 
  
 6.05    Control by Majority. 
  
 The Holders of a majority in aggregate principal amount of the Trust Debt Securities of each series affected or, if that series of Trust Debt Securities
is held by a Trust, the holders of a majority in aggregate liquidation amount of the Preferred Trust Securities of that Trust, may direct the time, method and place of conducting any proceeding for any remedy available to the Trustee or of
exercising any trust or power conferred on the Trustee. However, the Trustee may refuse to follow any direction that conflicts with law or this Indenture or that the Trustee determines in good faith is unduly prejudicial to the rights of other
Holders or may involve the Trustee in personal liability. The Trustee may take any other action deemed proper by the Trustee which is not inconsistent with such direction, including withholding notice to the Holders of the Trust Debt Securities of
continuing default (except in the payment of the principal of (other than any mandatory sinking fund payment) or premium, if any, or interest on any Trust Debt Securities) if the Trustee considers it in the interest of the Holders of the Trust Debt
Securities to do so. 
  
 6.06    Limitation
on Suits. 
  
 Except as provided in Section 6.07 hereof, no
holder of Trust Debt Securities or holder of Preferred Trust Securities of the Trust which is the Holder of that series of Trust Debt Securities may pursue any remedy with respect to this Indenture or the Trust Debt Securities unless: 
  
 (1)    the Holders of Trust Debt
Securities or the holders of such Preferred Trust Securities give to the Trustee written notice stating that an Event of Default with respect to the corresponding Trust Debt Securities is continuing; 
  
 (2)    the Holders of at least 25% in
aggregate principal amount of the Trust Debt Securities of that series or the holders of at least 25% in aggregate liquidation amount of such Preferred Trust Securities make a written request to the Trustee to pursue a remedy; 
  

 27 

 (3)    the Holders of Trust Debt Securities or the holders of such
Preferred Trust Securities provide to the Trustee reasonable security and indemnity satisfactory to the Trustee against any loss, liability or expense; 
  
 (4)    the Trustee does not comply with the request within 60 days after receipt of the notice, the request and the
offer of security and indemnity; and 
  
 (5)    during such 60 day period, the Holders of a majority in aggregate principal amount of the Trust Debt Securities of that series or the holders of a majority in aggregate liquidation amount of such Preferred Trust
Securities do not give the Trustee a direction inconsistent with the request. 
  
 A Holder of Trust Debt Securities or a holder of Preferred Trust Securities may not use this Indenture to prejudice the rights of another Holder or a holder of Preferred Trust Securities or to obtain a preference or
priority over another Holder or holder of Preferred Trust Securities. 
  
 6.07      Rights of Holders to Receive Payment. 
  
 Notwithstanding any other provision of this Indenture, the right of any Holder to receive payment of the principal of and premium (if any) or interest on the Trust Debt Securities held by such Holder, on or after the
respective due dates expressed in the Trust Debt Securities (in the case of interest, as the same may be extended pursuant to Section 4.01(b) hereof) or any Redemption Date, is absolute and unconditional and such right and the right to bring suit
for the enforcement of any such payment on or after such respective dates shall not be impaired or affected adversely without the consent of such Holder. If the Trust Debt Securities of a series are then held by a Trust, each holder of Preferred
Trust Securities of such Trust shall have the right to bring suit for the enforcement of any payment due in respect of Trust Debt Securities of such series based on a principal amount thereof equal to the aggregate liquidation amount of the
Preferred Trust Securities of such holder. 
  
 6.08    Collection Suit by Trustee. 
  
 If an Event of Default described in Section 6.01(1) hereof occurs and is continuing, the Trustee may recover judgment in its own name and as trustee of an express trust against the Company or any obligor on the Trust Debt Securities for the
whole amount owing with respect to the Trust Debt Securities and the amounts provided for in Section 7.07 hereof. 
  
 6.09    Trustee May File Proofs of Claim. 
  
 In case of the pendency of any receivership, insolvency, liquidation, bankruptcy, reorganization, arrangement, adjustment,
composition or other judicial proceeding relative to the Company or its properties or assets, the Trustee shall be entitled and empowered, by intervention in such proceeding or otherwise: 
  
 (1)    to file and prove a claim for the whole amount of the principal of and premium,
if any, and interest on the Trust Debt Securities 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 the reasonable compensation, expenses, disbursements
and 

  

 28 

 
advances of the Trustee, its agents and counsel) and of the Holders allowed in such judicial proceeding; and 
  
 (2)    to collect and receive any moneys
or other property payable or deliverable on any such claims and to distribute the same; and any Custodian in any such judicial proceeding is hereby authorized by each Holder to make such payments to the Trustee and, in the event that the Trustee
shall consent to the making of such payments directly to the Holders, to pay the Trustee any amount due it for the reasonable compensation, expenses, disbursements and advances of the Trustee, its agents and counsel, and any other amounts due the
Trustee under Section 7.07 hereof. 
  
 Nothing herein contained
shall be deemed to authorize the Trustee to authorize or consent to or accept or adopt on behalf of any Holder any plan of reorganization, arrangement, adjustment or composition affecting the Trust Debt Securities or the rights of any Holder
thereof, or to authorize the Trustee to vote in respect of the claim of any Holder in any such proceeding. 
  
 6.10    Priorities. 
  
 If the Trustee collects any money pursuant to this Article 6, it shall, subject to Article 10 hereof, pay out the money in the following order:

  

	 First:
	  	to the Trustee for amounts due under Section 7.07 hereof;
		
	 Second:
	  	to Holders of Trust Debt Securities of the particular series in respect of which or for the benefit of which such money has been collected for amounts due and unpaid on such Trust
Debt Securities for the principal amount, Redemption Price or interest, if any, as the case may be, ratably, without preference or priority of any kind, according to such amounts due and payable on such Trust Debt Securities; and
		
	 Third:
	  	the balance, if any, to the Company.

  
 Except as otherwise
set forth in the Trust Debt Securities, the Trustee may fix a Record Date and payment date for any payment to Holders pursuant to this Section 6.10. 
  
 6.11    Undertaking for Costs. 
  
 In any suit for the enforcement of any right or remedy under this Indenture or in any suit against the Trustee for any action taken or omitted by it as
Trustee, a court in its discretion may require the filing by any party litigant (other than the Trustee) in the suit of an undertaking to pay the costs of the suit, and the court in its discretion may assess reasonable costs, including reasonable
attorneys’ fees and expenses, against any party litigant in the suit, having due regard to the merits and good faith of the claims or defenses made by the party litigant. This Section 6.11 does not apply to a suit by the Company, the Trustee, a
suit by a Holder of Trust Debt Securities or holder of Preferred Trust Securities pursuant to Section 6.07 hereof or a suit by Holders of Trust Debt Securities of more than 10% in aggregate principal amount of the Trust Debt Securities of any series
or, if a series of Trust Debt Securities is held by a Trust, the holders of more than 10% in aggregate liquidation amount of the Preferred Trust Securities of that Trust. 
  

 29 

 6.12    Waiver of Stay; Extension or Usury Laws. 
  
 The Company covenants (to the extent that it may lawfully do so) that it will
not at any time insist upon, or plead or in any manner whatsoever claim or take the benefit or advantage of, any stay or extension law or any usury or other law wherever enacted, now or at any time hereafter in force, that would prohibit or forgive
the Company from paying all or any portion of the principal of or premium, if any, or interest on the Trust Debt Securities as contemplated herein or affect the covenants or the performance by the Company of its obligations under this Indenture; and
the Company (to the extent that it may lawfully do so) hereby expressly waives all benefit or advantage of any such law, and covenants that it will not hinder, delay or impede the execution of any power herein granted to the Trustee, but will suffer
and permit the execution of every such power as though no such law had been enacted. 
  
 ARTICLE VII 
 TRUSTEE 
  
 7.01    Duties of Trustee. 
  
 (a)    If an Event of Default occurs and is continuing with respect to the Trust Debt Securities of any
series, the Trustee shall exercise the rights and powers vested in it by this Indenture with respect to that series and use the same degree of care and skill in its exercise as a prudent man would exercise or use under the circumstances in the
conduct of his own affairs. 
  
 (b)    Except
during the continuance of an Event of Default with respect to the Trust Debt Securities of any series, (i) the Trustee need perform only those duties with respect to that series that are specifically set forth in this Indenture or the TIA and no
implied covenants or obligations shall be read into the Indenture against the Trustee; and (ii) in the absence of bad faith on its part, the Trustee may conclusively rely, as to the truth of the statements and the correctness of the opinions
expressed therein, upon certificates or opinions furnished to the Trustee and conforming to the requirements of this Indenture. However, in the case of any certificates or opinions which by any provision hereof are specifically required to be
furnished to the Trustee, the Trustee shall examine the certificates and opinions to determine whether or not they conform to the requirements of this Indenture. 
  
 (c)    The Trustee may not be relieved from liability for its own negligent action, its own negligent
failure to act or its own willful misconduct, except that: 
  
 (i)    this Section 7.01(c) does not limit the effect of Section 7.01(b) hereof; 
  
 (ii)    the Trustee shall not be liable for any error of judgment made in good faith by a Responsible Officer unless
it is proved that the Trustee was negligent in ascertaining the pertinent facts; and 
  
 (iii)    the Trustee shall not be liable with respect to any action it takes or omits to take in good faith in
accordance with a direction received by it pursuant to Section 6.05 hereof. 
  

 30 

 (d)    Every provision of this Indenture that in any way relates to the Trustee is
subject to Section 7.01(a), (b), (c) and (e) and Section 7.02 hereof. 
  
 (e)    The Trustee may refuse to perform any duty or exercise any right or power or extend or risk its own funds or otherwise incur any financial liability unless it receives security and indemnity reasonably
satisfactory to it against any loss, liability or expense (including reasonable counsel fees). 
  
 (f)    Money held by the Trustee in trust hereunder need not be segregated from other funds except to the extent required by law. Except as otherwise provided in Section 3.05 and Section 8.01
hereof, the Trustee shall not be liable for interest on any money held by it hereunder. 
  
 7.02    Rights of Trustee. 
  
 (a)    The Trustee may conclusively rely on any document (whether in original or facsimile form) reasonably believed by it to be genuine and to have been signed or presented by the proper person.
The Trustee need not investigate any fact or matter stated in the document. 
  
 (b)    Before the Trustee acts or refrains from acting, it may require an Officer’s Certificate and, if appropriate, an Opinion of Counsel. The Trustee shall not be liable for any action it
takes or omits to take in good faith in reliance on such Officer’s Certificate and Opinion of Counsel. 
  
 (c)    The Trustee may act through agents and shall not be responsible for the misconduct or negligence of any agent appointed with
due care. 
  
 (d)    The Trustee shall not be
liable for any action it takes or omits to take in good faith which it reasonably believes to be authorized or within its rights or powers. 
  
 (e)    The Trustee may consult with counsel of its selection and the advice of such counsel or any Opinion of Counsel shall be full
and complete authorization and protection in respect of any action taken, suffered or omitted by it hereunder in good faith and in reliance thereon. 
  
 (f)    The Trustee shall be under no obligation to exercise any of the rights or powers vested in it by this Indenture at the request
or direction of any of the Holders pursuant to this Indenture, unless such Holders shall have offered to the Trustee reasonable security and indemnity satisfactory to it against the costs, expenses and liabilities (including reasonable counsel fees)
which might be incurred by it in compliance with such request or direction. 
  
 (g)    The Trustee shall not be bound to make any investigation into the facts or matters stated in any resolution, certificate, statement, instrument, opinion, report, notice, request, direction,
consent, order, bond, debenture, note, other evidence of indebtedness or other paper or document, but the Trustee, in its discretion, may make such further inquiry or investigation into such facts or matters as it may see fit, and, if the Trustee
shall determine to make such further inquiry or investigation, it shall be entitled to examine the books, records and premises of the Company, personally or by agent or attorney at the sole cost of the Company upon ten Business 
  

 31 

 Days advance written notice and during regular business hours and shall incur no liability or additional liability of any
kind by reason of such inquiry or investigation. 
  
 (h)    The Trustee may execute any of the trusts or powers hereunder or perform any duties hereunder either directly or by or through agents or attorneys and the Trustee shall not be responsible for any misconduct or
negligence on the part of any agent or attorney appointed with due care by it hereunder. 
  
 (i)    The Trustee shall not be deemed to have notice of any Default or Event of Default unless a Responsible Officer of the Trustee has actual knowledge thereof or unless written notice of any
event which is in fact such a default is received by the Trustee at the Corporate Trust Office of the Trustee, and such notice references the Securities and this Indenture. 
  
 (j)    The rights, privileges, protections, immunities and benefits given to the Trustee, including,
without limitation, its right to be indemnified, are extended to, and shall be enforceable by, the Trustee in each of its capacities hereunder, and each agent, custodian and other Person employed to act hereunder. 
  
 (k)    The Trustee may request that the Company deliver
an Officers’ Certificate setting forth the names of individuals and/or titles of officers authorized at such time to take specified actions pursuant to this Indenture, which Officers’ Certificate may be signed by any person authorized to
sign an Officers’ Certificate, including any person specified as so authorized in any such certificate previously delivered and not superseded. 
  
 7.03    Individual Rights of Trustee. 
  

The Trustee in its individual or any other capacity may become the owner or pledgee of Trust Debt Securities and may otherwise deal with the Company or
its Affiliates with the same rights it would have if it were not Trustee. Any Paying Agent, Registrar or co-registrar may do the same with like rights. However, the Trustee must comply with Sections 7.10 and 7.11 hereof. 
  
 7.04    Trustee’s Disclaimer. 
  
 The recitals contained herein and in the Trust Debt Securities, except the
Trustee’s certificates of authentication, shall be taken as the statements of the Company, and the Trustee assumes no responsibility for their correctness. The Trustee makes no representation as to the validity or sufficiency of this Indenture
or of the Trust Debt Securities. The Trustee shall not be accountable for the use or application by the Company of the Trust Debt Securities or the proceeds thereof. 
  
 7.05    Notice of Defaults. 
  
 If a Default occurs and is continuing with respect to the Trust Debt Securities of any series and if it is known to the
Trustee, the Trustee shall mail to each Holder of a Trust Debt Security of that series notice of the Default within 90 days after it becomes known to the Trustee unless such Default shall have been cured or waived. Except in the case of a Default
described in Section 6.01(1) hereof, the Trustee may withhold such notice if and so long as a committee of 
  

 32 

 its Trust Officers in good faith determines that the withholding of such notice is in the interests of the Holders of the
Trust Debt Securities of that series. The Trustee shall not be charged with knowledge of any Default (except in the case of a Default under Section 6.01(1) hereof) unless a Responsible Officer assigned to the Corporate Trust Department of the
Trustee shall have actual knowledge of the Default. The second sentence of this Section 7.05 shall be in lieu of the proviso to TIA Section 315(b). Said proviso is hereby expressly excluded from this Indenture, as permitted by the TIA. 

 
 7.06    Reports by Trustee to Holders.

  
 Within 60 days after each May 15, beginning with the May
15 next following the date of this Indenture, the Trustee shall mail to each Holder, and such other holders that have submitted their names to the Trustee for such purpose, a brief report dated as of such May 15 in accordance with and to the extent
required under TIA Section 313. 
  
 A copy of each report at the
time of its mailing to Holders shall be filed with the Company, the SEC and any securities exchange on which the Trust Debt Securities are listed. The Company agrees to promptly notify the Trustee whenever the Trust Debt Securities become listed on
any securities exchange and of any listing thereof. 
  
 7.07    Compensation and Indemnity. 
  
 The Company agrees: 
  
 (1)    to pay to the Trustee from time to time such compensation as shall be agreed in writing between the Company and the Trustee for all services rendered by it hereunder (which compensation shall not be limited by any
provision of law in regard to the compensation of a trustee of an express trust); 
  
 (2)    to reimburse the Trustee upon its request for reasonable expenses, disbursements and advances incurred or made
by the Trustee in accordance with any provision of this Indenture (including the reasonable compensation and the expenses, and advances of its agents and counsel, provided that prior to any Event of Default, the Trustee shall only have one counsel),
including all reasonable expenses and advances incurred or made by the Trustee in connection with any Event of Default or any membership on any creditors’ committee, except any such expense or advance as may be caused by its own negligence or
willful misconduct; and 
  
 (3)    to indemnify the Trustee, its officers, directors and shareholders, for, and to hold it harmless against, any and all loss, claim, damage, liability or expense, including taxes (other than taxes based upon the
income of the Trustee), incurred without negligence or willful misconduct on its part, arising out of or in connection with the acceptance or administration of this Trust, including the costs and expenses of defending itself against any claim
(whether asserted by the Company, any Holder or any other person) or liability in connection with the exercise or performance of any of its powers or duties hereunder. 
  

 33 

 Before, after or during an Event of Default with respect to the Trust Debt Securities of a series, the
Trustee shall have a claim and lien prior to the Trust Debt Securities of that series as to all property and funds held by it hereunder for any amount owing it for its fees and expenses or any predecessor Trustee pursuant to this Section 7.07,
except with respect to funds held by the Trustee or any Paying Agent in trust for the payment of principal of or premium, if any, or interest on particular Trust Debt Securities pursuant to Section 2.06 or Section 8.01 hereof. 
  
 The Company’s obligations pursuant to this Section 7.07 are not subject
to Article 10 of this Indenture and shall survive the discharge of this Indenture and the removal or resignation of the Trustee. When the Trustee renders services or incurs expenses after the occurrence of a Default specified in Section 6.01 hereof,
the compensation for services and expenses are intended to constitute expenses of administration under any Bankruptcy Law. 
  
 7.08    Replacement of Trustee. 
  
 The Trustee may resign at any time, by so notifying the Company in writing at least 30 days prior to the date of the proposed resignation; provided,
however, no such resignation shall be effective until a successor Trustee has accepted its appointment pursuant to this Section 7.08. The Holders of at least a majority in aggregate principal amount of the Trust Debt Securities at the time
outstanding may remove the Trustee by so notifying the Trustee in writing and may appoint a successor Trustee, which shall be subject to the consent of the Company unless an Event of Default has occurred and is continuing. The Trustee shall resign
if: 
  
 (1)    the Trustee
fails to comply with Section 7.10 hereof; 
  
 (2)    the Trustee is adjudged bankrupt or insolvent; 
  
 (3)    a receiver or public officer takes charge of the Trustee or its property; or 
  
 (4)    the Trustee otherwise becomes
incapable of acting. 
  
 If the Trustee resigns or is removed or
if a vacancy exists in the office of Trustee for any reason, the Company shall promptly appoint a successor Trustee. A successor Trustee shall deliver a written acceptance of its appointment to the retiring Trustee and to the Company. Thereupon the
resignation or removal of the retiring Trustee shall become effective, and the successor Trustee shall have all the rights, powers and duties of the Trustee under this Indenture. The successor Trustee shall mail a notice of its succession to
Holders. Subject to payment of all amounts owing to the Trustee under Section 7.07 hereof and subject further to its lien under Section 7.07, the retiring Trustee shall promptly transfer all property held by it as Trustee to the successor Trustee.
If a successor Trustee does not take office within one year after the retiring Trustee resigns or is removed, the retiring Trustee (at the expense of the Company), the Company or the Holders of at least a majority in aggregate principal amount of
the Trust Debt Securities at the time outstanding may petition any court of competent jurisdiction for the appointment of a successor Trustee. 
  
 If the Trustee fails to comply with Section 7.10 hereof, any Holder may petition any court of competent jurisdiction for its removal and the appointment
of a successor Trustee. 
  

 34 

 7.09    Successor Trustee by Merger. 
  
 If the Trustee consolidates with, merges or converts into, or transfers all
or substantially all its corporate trust business or assets to another corporation, the resulting, surviving or transferee corporation without any further act shall be the successor Trustee. 
  
 7.10    Eligibility: Disqualification. 

 
 The Trustee shall at all times satisfy the requirements of TIA Sections
310(a)(1) and 310(a)(2). The Trustee (or any Affiliate thereof which has unconditionally guaranteed the obligations of the Trustee hereunder) shall have a combined capital and surplus of at least $50,000,000 as set forth in its most recently
published annual report of condition. The Trustee shall comply with TIA Section 310(b). In determining whether the Trustee has conflicting interests as defined in TIA Section 310(b)(1), the provisions contained in the proviso to TIA Section
310(b)(1) and the Trustee’s Statement of Eligibility on Form T-1 shall be deemed incorporated herein. 
  
 7.11    Preferential Collection of Claims Against Company. 
  
 If and when the Trustee shall be or become a creditor of the Company, the Trustee shall be subject to the provisions of the
TIA regarding the collection of claims against the Company. 
  
 ARTICLE VIII 
 SATISFACTION AND DISCHARGE OF INDENTURE; 
 DEFEASANCE OF CERTAIN OBLIGATIONS; UNCLAIMED MONEYS 
  
 8.01    Satisfaction and Discharge of Indenture. 
  
 The Company shall be deemed to have paid and discharged the entire indebtedness on any series of the Trust Debt Securities
outstanding on the date the Company has irrevocably deposited or caused to be irrevocably deposited with the Trustee or any Paying Agent as trust funds in trust, specifically pledged as security for, and dedicated solely to, the benefit of the
Holders of the Trust Debt Securities of such series (1) cash (which may be held in an interest bearing account insured by the Federal Deposit Insurance Corporation) in an amount, or (2) U.S. Government Obligations, maturing as to principal and
interest at such times and in such amounts as will ensure the availability of cash, or (3) a combination thereof, sufficient to pay the principal of and premium, if any, and interest on all Trust Debt Securities of such series then outstanding on
the scheduled due dates therefor, provided that the following conditions shall have been met: 
  
 (A)    no Default or Event of Default with respect to the Trust Debt Securities of such series has occurred and is
continuing on the date of such deposit or occurs as a result of such deposit; 
  
 (B)    the Company has delivered to the Trustee an Officer’s Certificate certifying that there does not exist (i) a default in the payment of all or any portion of any Senior Indebtedness or
(ii) any other default affecting Senior Indebtedness permitting its acceleration as the result of which the maturity of Senior Indebtedness has been accelerated; 
  

 35 

 (C)    the Company has delivered to the Trustee (i) either a private
Internal Revenue Service ruling or an Opinion of Counsel to the effect that, based on a change in law occurring after the execution of this Indenture, the Holders of the Trust Debt Securities of such series will not recognize income, gain or loss
for federal income tax purposes as a result of such deposit, defeasance and discharge and will be subject to federal income tax on the same amount and in the manner and at the same times as would have been the case if such deposit, defeasance and
discharge had not occurred, and (ii) an Opinion of Counsel to the effect that (A) the deposit shall not result in the Company, the Trustee or, if the Trust Debt Securities of such series are held by a Trust, such Trust being deemed to be an
“investment company” under the Investment Company Act of 1940, as amended, and (B) such deposit creates a valid trust in which the Holders of the Trust Debt Securities of such series have the sole beneficial interest or that the Holders of
the Trust Debt Securities of such series have a nonavoidable first priority security interest in such trust; and 
  
 (D)    the Company has delivered to the Trustee an Officer’s Certificate and an Opinion of Counsel, each stating
that all conditions precedent relating to the defeasance contemplated by this provision have been complied with. 
  
 Upon such deposit, provisions of this Indenture with respect to such series of Trust Debt Securities shall no longer be in effect (except as to (1) the rights of
registration of transfer and exchange of Trust Debt Securities of such series, (2) the replacement of apparently mutilated, defaced, destroyed, lost or stolen Trust Debt Securities of such series, (3) the rights of the Holders of the Trust Debt
Securities of such series to receive payments of the principal thereof and premium, if any, and interest thereon, (4) the rights of the Holders of the Trust Debt Securities of such series as beneficiaries hereof with respect to the property so
deposited with the Trustee payable to all or any of them, (5) the obligation of the Company to maintain an office or agency for payments on and registration of transfer of the Trust Debt Securities of such series, (6) the rights, obligations and
immunities of the Trustee hereunder, and (7) the obligations of the Company to the Trustee for compensation and indemnity under Section 7.07 hereof), and the Trustee shall, at the request and expense of the Company, execute proper instruments
acknowledging the same. 
  
 8.02    Application by Trustee of Funds Deposited for Payment of Trust Debt Securities. 
  
 Subject to Section 8.04 hereof, all moneys deposited with the Trustee pursuant to Section 8.01 hereof shall be held in trust and applied by it to the
payment, either directly or through any Paying Agent (including the Company acting as its own Paying Agent), to the Holders of the Trust Debt Securities of the 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. 
  

 36 

 8.03    Repayment of Moneys Held by Paying Agent. 
  
 In connection with the satisfaction and discharge of this Indenture, all
moneys then held by any Paying Agent under this Indenture shall, upon demand of the Company, be repaid to it or paid to the Trustee, and thereupon such Paying Agent shall be released from all further liability with respect to such moneys.

  
 8.04    Return of Moneys Held by the
Trustee and Paying Agent Unclaimed for Three Years. 
  
 Any
moneys deposited with or paid to the Trustee or any Paying Agent for the payment of the principal of and premium, if any, or interest on the Trust Debt Securities of any series and not applied but remaining unclaimed for three years after the date
when such principal, premium, if any, or interest shall have become due and payable shall, unless otherwise required by mandatory provisions of applicable escheat or abandoned or unclaimed property law, be repaid to the Company by the Trustee or
such Paying Agent, and the Holders of such Trust Debt Securities shall, unless otherwise required by mandatory provisions of applicable escheat or abandoned or unclaimed property laws, thereafter look only to the Company 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. 
  
 8.05    Reinstatement. 
  
 If the Trustee or Paying Agent is unable to apply any money or U.S. Government Obligations in accordance with 8.01 hereof with respect to the Trust Debt
Securities of any series by reason of any legal proceeding or by reason of any order or judgment of any court or governmental authority enjoining, restraining or otherwise prohibiting such application, the Company’s obligations under this
Indenture and the Trust Debt Securities of such series shall be revived and reinstated as though no deposit had occurred pursuant to this Article 8 until such time as the Trustee or Paying Agent is permitted to apply all such money and U.S.
Government Obligations in accordance with Section 8.01 hereof; provided, however, that if the Company has made any payment of principal of or premium, if any, or accrued interest on the Trust Debt Securities of such series because of the
reinstatement of their obligations, the Company shall be subrogated to the rights of the Holders thereof to receive such payment from the money and U.S. Government Obligations held by the Trustee or Paying Agent. 
  
 ARTICLE IX 
 AMENDMENTS 
  
 9.01    Without Consent of Holders. 
  
 From time to time, when authorized by a resolution of the Board of Directors, the Company and the Trustee, without notice to or the consent of any Holders of the Trust Debt Securities, may amend or supplement this Indenture: 
  
 (1)    to cure any ambiguity, defect or
inconsistency; 
  
 (2)    to
comply with Article 5 hereof; 
  

 37 

 (3)    to provide for uncertificated Trust Debt Securities in
addition to or in place of certificated Trust Debt Securities; 
  
 (4)    to make any other change that does not in the reasonable judgment of the Company adversely affect the rights of any Holder; 
  
 (5)    to comply with any requirement of the SEC in connection with the qualification of
this Indenture under the TIA; or 
  
 (6)    to set forth the terms and conditions, which shall not be inconsistent with this Indenture, of any series of Trust Debt Securities (other than the Series II Trust Debt Securities) that are to be issued hereunder
and the form of Trust Debt Securities of such series. 
  
 9.02
With Consent of Holders. 
  
 The Company and the Trustee may
amend this Indenture in any manner not permitted by Section 9.01 hereof or may waive future compliance by the Company with any provisions of this Indenture with the consent of the Holders of a majority in aggregate principal amount of the Trust Debt
Securities of each series affected thereby. Such an amendment or waiver may not, without the consent of each Holder of the Trust Debt Securities affected thereby: 
  
 (1)    reduce the principal amount of such Trust Debt Securities; 
  
 (2)    reduce the principal amount of
such Trust Debt Securities the Holders of which must consent to an amendment of this Indenture or a waiver; 
  
 (3)    change the stated maturity of the principal of or the interest on or rate of interest on such Trust Debt
Securities or the manner of calculation thereof; 
  
 (4)    change adversely to the Holders the redemption provisions of Article 3 hereof; 
  
 (5)    change the currency in respect of which the payments on such Trust Debt Securities are to be made; 

 
 (6)    make any change in Article 10
hereof that adversely affects the rights of the Holders of the Trust Debt Securities or any change to any other Section hereof that adversely affects their rights under Article 10 hereof; or 
  
 (7)    change Section 6.07 hereof;

  
 provided that, in the case of the outstanding Trust Debt Securities of a
series then held by a Trust, no such amendment shall be made that adversely affects the holders of the Preferred Trust Securities of that Trust, and no waiver of any Event of Default with respect to the Trust Debt Securities of that series or
compliance with any covenant under this Indenture shall be effective, without the prior consent of the holders of a majority of the aggregate liquidation amount of the 
  

 38 

 outstanding Preferred Trust Securities of that Trust or the holder of each such Preferred Trust Security, as applicable.

  
 A supplemental indenture that changes or eliminates any
covenant or other provision of this Indenture that has expressly been included solely for the benefit of one or more particular series of Trust Debt Securities, or which modifies the rights of the Holders of Trust Debt Securities of such series with
respect to such covenant or other provision, shall be deemed not to affect the rights under this Indenture of the Holders of Trust Debt Securities of any other series. 
  
 It shall not be necessary for the consent of the Holders of Trust Debt Securities or holders of Preferred Trust Securities
under this Section 9.02 to approve the particular form of any proposed amendment, but it shall be sufficient if such consent approves the substance thereof. 
  
 If certain Holders agree to defer or waive certain obligations of the Company hereunder with respect to Trust Debt Securities held by them, such deferral
or waiver shall not affect the rights of any other Holder to receive the payment or performance required hereunder in a timely manner. 
  
 After an amendment or waiver under this Section 9.02 becomes effective, the Company shall mail to each Holder a notice briefly describing the amendment or
waiver. Any failure of the Company to mail such notices, or any defect therein, shall not, however, in any way impair or affect the validity of such amendment or waiver. 
  
 9.03    Compliance with Trust Indenture Act. 
  
 Every supplemental indenture executed pursuant to this Article 9 shall comply
with the TIA. 
  
 9.04    Revocation and
Effect of Consents; Waivers and Actions. 
  
 Until an
amendment, waiver or other action by Holders becomes effective, a consent to it or any other action by a Holder of a Trust Debt Security hereunder is a continuing consent by the Holder and every subsequent Holder of that Trust Debt Security or
portion of the Trust Debt Security that evidences the same obligation as the consenting Holder’s Trust Debt Security, even if notation of the consent, waiver or action is not made on such Trust Debt Security. However, any such Holder or
subsequent Holder may revoke the consent, waiver or action as to such Holder’s Trust Debt Security or portion of the Trust Debt Security if the Trustee receives the notice of revocation before the consent of the requisite aggregate principal
amount of such Trust Debt Securities then outstanding has been obtained and not revoked. After an amendment, waiver or action becomes effective, it shall bind every Holder of the Trust Debt Securities of the related series, except as provided in
Section 9.02 hereof. 
  
 The Company may, but shall not be
obligated to, fix a Record Date for the purpose of determining the Persons entitled to consent to any amendment or waiver. If a Record Date is fixed, then, notwithstanding the first two sentences of the immediately preceding paragraph, only Holders
of Trust Debt Securities or holders of Preferred Trust Securities, as applicable, on such Record Date or their duly designated proxies, and only those Persons, shall be entitled to consent to such amendment, supplement or waiver or to revoke any
consent previously given, whether or 
  

 39 

 not such Persons continue to be such after such Record Date. No such consent shall be valid or effective for more than 90
days after such Record Date. 
  
 9.05    Notation on or Exchange of Trust Debt Securities. 
  
 Trust Debt Securities of the related series authenticated and made available for delivery after the execution of any supplemental indenture pursuant to this Article 9 may, and shall, if required by the Trustee, bear a
notation in form approved by the Trustee as to any matter provided for in such supplemental indenture. If the Company shall so determine, new Trust Debt Securities so modified as to conform, in the opinion of the Trustee and the Board of Directors,
to any such supplemental indenture may be prepared and executed by the Company and authenticated and made available for delivery by the Trustee in exchange for outstanding Trust Debt Securities. 
  
 9.06    Trustee to Execute Supplemental Indentures.

  
 The Trustee shall execute any supplemental indenture
authorized pursuant to this Article 9 if the supplemental indenture does not adversely affect the rights, duties, liabilities or immunities of the Trustee. If it does, the Trustee may, but need not, execute it. In executing such supplemental
indenture the Trustee shall be provided with, and shall be fully protected in relying upon, an Officer’s Certificate and Opinion of Counsel stating that such supplemental indenture is authorized or permitted by this Indenture. 
  
 9.07    Effect of Supplemental Indentures.

  
 Upon the execution of any supplemental indenture under
this Article 9, this Indenture shall be modified in accordance therewith, and such supplemental indenture shall form a part of this Indenture for all purposes and every Holder of Trust Debt Securities of the related series theretofore or thereafter
authenticated and made available for delivery hereunder shall be bound thereby. 
  
 ARTICLE X 
 SUBORDINATION 
  
 10.01    Applicability of Article; Trust Debt Securities Subordinated to SeniorIndebtedness.

  
 (a)    The provision of this Article
10 shall be applicable to each series of Trust Debt Securities unless the Trust Debt Securities of such series provide otherwise. 
  
 (b)    If not otherwise provided with respect to the Trust Debt Securities of such series, then notwithstanding the provisions of
Section 6.10 hereof or any other provision herein or in any Trust Debt Security, the Company and the Trustee and, by their acceptance thereof, the Holders of the Trust Debt Securities (i) covenant and agree that all payments by the Company of the
principal of and premium, if any, and interest on the Trust Debt Securities (other than Trust Debt Securities which have been discharged pursuant to Article 8) shall be subordinated in accordance with the provisions of this Article 10 to the prior
payment in full, in cash or cash 
  

 40 

 equivalents, of all amounts payable on, under or in connection with Senior Indebtedness, and (ii) acknowledge that
holders of Senior Indebtedness are or shall be relying on this Article 10. 
  
 10.02    Priority and Payment of Proceeds in Certain Events: Remedies Standstill. 
  
 (a)    Upon any payment or distribution of assets or securities of the Company, as the case may be, of any kind or character, whether
in cash, property or securities, upon any dissolution or winding up or total or partial liquidation or reorganization of the Company, whether voluntary or involuntary, or in bankruptcy, insolvency, receivership or other proceedings, all amounts
payable on, under or in connection with Senior Indebtedness (including any interest accruing on such Senior Indebtedness subsequent to the commencement of a bankruptcy, insolvency or similar proceeding) shall first be paid in full in cash, or
payment provided for in cash or cash equivalents, before the Holders or the Trustee on behalf of the Holders or the holders of Preferred Trust Securities shall be entitled to receive from the Company any payment of principal of or premium, if any,
or interest on the Trust Debt Securities or distribution of any assets or securities. 
  
 (b)    No direct or indirect payment by or on behalf of the Company of principal of or premium, if any, or interest on the Trust Debt Securities (other than Trust Debt Securities which have been
discharged pursuant to Article 8), whether pursuant to the terms of the Trust Debt Securities or upon acceleration or otherwise, shall be made if, any the time of such payment, there exists (i) a default in the payment of all or any portion of any
Senior Indebtedness and the Trustee has received written notice thereof from the Company, from holders of Senior Indebtedness or from any trustee, representative or agent therefor, or (ii) any other default affecting Senior Indebtedness, as a result
of which the maturity of Senior Indebtedness has been accelerated and the Trustee has received written notice from the Company, from holders of Senior Indebtedness or from any trustee, representative or agent therefor, and such default shall not
have been cured or waived by or on behalf of the holders of such Senior Indebtedness. 
  
 (c)    If, notwithstanding the foregoing provisions prohibiting such payment or distribution, the Trustee or any Holder shall have received any payment on account of the principal of or premium, if
any, or interest on the Trust Debt Securities when such payment is prohibited by this Section 10.02 and before all amounts payable on, under or in connection with Senior Indebtedness are paid in full in cash or cash equivalents, then and in such
event (subject to the provisions of Section 10.08 hereof) such payment or distribution shall be received and held in trust for the holders of Senior Indebtedness and, at the written direction of the trustee, representative or agent for the holders
of the Senior Indebtedness, shall be paid to the holders of the Senior Indebtedness remaining unpaid to the extent necessary to pay such Senior Indebtedness in full in cash or cash equivalents. 
  
 Upon any payment or distribution of assets or securities referred to in this
Article 10, the Trustee and the Holders shall be entitled to rely upon any order or decree of a court of competent jurisdiction in which such dissolution, winding up, liquidation or reorganization proceedings are pending, and upon a certificate of
the receiver, trustee in bankruptcy, liquidating trustee, agent or other Person making any such payment or distribution, delivered to the Trustee for the purpose of ascertaining the Persons entitled to participate in such distribution, the holders
of Senior 
  

 41 

 Indebtedness of the Company, the amount thereof or payable thereon, the amount or amounts paid or distributed thereon and
all other facts pertinent thereto or to this Article 10. 
  
 10.03    Payments which May Be Made Prior to Notice. 
  
 Nothing in this Article 10 or elsewhere in this Indenture shall prevent (i) the Company, except under the conditions described in Section 10.02 hereof, from making payments of principal of or premium, if any, or
interest on the Trust Debt Securities or from depositing with the Trustee any monies for such payments, or (ii) the application by the Trustee of any monies deposited with it for the purpose of making such payments of principal of or premium, if
any, or interest on the Trust Debt Securities, to the Holders entitled thereto, unless at least one Business Day prior to the date when such payment would otherwise (except for the prohibitions contained in Section 10.02 hereof) become due and
payable the Trustee shall have received the written notice provided for in Section 10.02(b)(i) or (ii) hereof. 
  
 10.04    Rights of Holders of Senior Indebtedness Not to Be Impaired. 
  
 No right of any present or future holder of any Senior Indebtedness to
enforce subordination as herein provided shall at any time or in any way be prejudiced or impaired by any act or failure to act in good faith by any such holder, or by any noncompliance by the Company with the terms and provisions and covenants
herein regardless of any knowledge thereof any such holder may have or otherwise be charged with. 
  
 The provisions of this Article 10 are intended to be for the benefit of, and shall be enforceable directly by, the holders of Senior Indebtedness.
Notwithstanding anything to the contrary in this Article 10, to the extent any Holders or the Trustee have paid over or delivered to any holder of Senior Indebtedness any payment or distribution received on account of the principal of or premium (if
any) or interest on the Trust Debt Securities to which any other holder of Senior Indebtedness shall be entitled to share in accordance with Section 10.02 hereof, no holder of Senior Indebtedness shall have a claim or right against any Holders or
the Trustee with respect to any such payment or distribution or as a result of the failure to make payments or distributions to such other holder of Senior Indebtedness. 
  
 10.05    Trustee May Take Action to Effectuate Subordination. 
  
 Each Holder of a Trust Debt Security, by his acceptance thereof, authorizes
and directs the Trustee on his behalf to take such action as may be required by the trustee, representative or agent for holders of Senior Indebtedness or by the Company to effectuate, as between the holders of Senior Indebtedness and the Holders,
the subordination as provided in this Article 10 and appoints the Trustee his attorney-in-fact for any and all such purposes. 
  
 10.06    Subrogation. 
  
 Upon the payment in full, in cash or cash equivalents, of all Senior Indebtedness, any Holder shall be subrogated to the rights of the holders of such
Senior Indebtedness to receive payments or distributions of assets of the Company made on such Senior Indebtedness until the Trust Debt Securities shall be paid in full; and for the purposes of such subrogation, no payments or distributions to
holders of such Senior Indebtedness of any cash property or securities to 
  

 42 

 which such Holders of the Trust Debt Securities would be entitled except for this Article 10, and no payment pursuant to
this Article 10 to holders of such Senior Indebtedness by such Holders of the Trust Debt Securities, shall, as between the Company, its creditors other than holders of such Senior Indebtedness and such Holders of the Trust Debt Securities, be deemed
to be a payment by the Company to or on account of such Senior Indebtedness, it being understood that the provisions of this Article 10 are solely for the purpose of defining the relative rights of the holders of such Senior Indebtedness, on the one
hand, and such Holders of the Trust Debt Securities, on the other hand. 
  
 If any payment or distribution to which Holders of Trust Debt Securities would otherwise have been entitled but for the provisions of this Article 10 shall have been applied, pursuant to this Article 10, to the payment of all Senior
Indebtedness then and in such case such Holders of the Trust Debt Securities shall be entitled to receive from the holders of such Senior Indebtedness at the time outstanding any payments or distributions received by such holders of Senior
Indebtedness in excess of the amount sufficient to pay, in cash or cash equivalents, all such Senior Indebtedness in full. 
  
 10.07    Obligations of Company Unconditional; Reinstatement. 
  
 Nothing in this Article 10 or elsewhere in this Indenture or in any Trust Debt Security is intended to or shall impair, as
between the Company and Holders of the Trust Debt Securities, the obligations of the Company, which are absolute and unconditional, to pay to such Holders the principal of and premium, if any, and interest on the Trust Debt Securities as and when
the same shall become due and payable in accordance with their terms, or is intended to or shall affect the relative rights of such Holders of the Trust Debt Securities and creditors of the Company other than the holders of the Senior Indebtedness,
nor shall anything herein or therein prevent the Trustee or any Holder of Trust Debt Securities or holder of Preferred Trust Securities, as applicable, from exercising all remedies otherwise permitted by applicable law under this Indenture, subject
to the rights, if any, under this Article 10 of the holders of such Senior Indebtedness in respect of cash, property or securities of the Company received upon the exercise of any such remedy. 
  
 The failure to make a scheduled payment of principal of or premium, if any,
or interest on the Trust Debt Securities by reason of Section 10.02 hereof shall not be construed as preventing the occurrence of an Event of Default under Section 6.01 hereof; provided, however, that if (i) the conditions preventing the making of
such payment no longer exist, and (ii) such Holders of the Trust Debt Securities are made whole with respect to such omitted payments, the Event of Default relating thereto (including any failure to pay any accelerated amounts) shall be
automatically waived, and the provisions of the Indenture shall be reinstated as if no such Event of Default had occurred. 
  
 10.08    Trustee Entitled to Assume Payments Not Prohibited in Absence of Notice. 
  
 The Trustee or Paying Agent shall not be charged with the knowledge of the
existence of any default in the payment of all or a portion of any Senior Indebtedness or any other default affecting Senior Indebtedness, as a result of which the maturity of the Senior Indebtedness has 
  

 43 

 been accelerated, unless and until the Trustee or Paying Agent shall have received written notice thereof from the
Company or one or more holders of Senior Indebtedness or from any trustee, representative or agent therefor or unless the Trustee or Paying Agent otherwise had actual knowledge thereof; and, prior to the receipt of any such written notice or actual
knowledge of a Responsible Officer in the Corporate Trust Department of the Trustee or Paying Agent, the Trustee or Paying Agent may conclusively assume that no such facts exist. 
  
 Unless at least one Business Day prior to the date when by the terms of this Indenture any monies are to be deposited by the
Company with the Trustee or any Paying Agent for any purpose (including, without limitation, the payment of the principal of or premium, if any, or interest on any Trust Debt Security), the Trustee or Paying Agent shall have received with respect to
such monies the notice provided for in Section 10.02 hereof or a Responsible Officer in the Corporate Trust Department of the Trustee or Paying Agent shall have actual knowledge of default in the payment of all or a portion of any Senior
Indebtedness or any other default affecting Senior Indebtedness as the result of which the maturity of the Senior Indebtedness has been accelerated, the Trustee or Paying Agent shall have full power and authority to receive and apply such monies to
the purpose for which they were received. Neither of them shall be affected by any notice to the contrary, which may be received by either on or after such date. The foregoing shall not apply to the Paying Agent if the Company is acting as Paying
Agent. Nothing in this Section 10.08 shall limit the right of the holders of Senior Indebtedness to recover payments as contemplated by Section 10.02 hereof. The Trustee or Paying Agent shall be entitled to conclusively rely on the delivery to it of
a written notice by a Person representing himself or itself to be a holder of such Senior Indebtedness (or a trustee, representative or agent on behalf of such holder) to establish that such notice has been given by a holder of such Senior
Indebtedness or a trustee, representative or agent on behalf of any such holder. The Trustee shall not be deemed to have any duty to the holders (and shall be fully protected in relying upon such notice) of Senior Indebtedness. 
  
 10.09    Right of Trustee to Hold Senior Indebtedness.

  
 The Trustee and any Paying Agent shall be entitled to all
of the rights set forth in this Article 10 in respect of any Senior Indebtedness at any time held by them to the same extent as any other holder of such Senior Indebtedness, and nothing in this Indenture shall be construed to deprive the Trustee or
any Paying Agent of any of its rights as such holder. 
  
 10.10    Trustee Not Fiduciary for Holders of Senior Indebtedness. 
  
 The Trustee shall not be deemed to owe any fiduciary duty to the holders of Senior Indebtedness and, to the extent permitted by applicable law, shall not
be liable to any such holders if the Trustee shall in good faith mistakenly pay over or distribute to Holders of Securities or to the Company or to any other person cash, property or securities to which any holders of Senior Indebtedness shall be
entitled by virtue of this Article or otherwise. With respect to the holders of Senior Indebtedness, the Trustee undertakes to perform or to observe only such of its covenants or obligations as are specifically set forth in this Article and no
implied covenants or obligations with respect to holders of Senior Indebtedness shall be read into this Indenture against the Trustee. 
  

 44 

 ARTICLE XI 
 MISCELLANEOUS 
  
 11.01    Trust Indenture Act Controls. 
  
 If any provision of this Indenture limits, qualifies or conflicts with the duties imposed by operation of subsection (c) of Section 318 of the TIA, the imposed duties shall control. The provisions of Sections 310 to
317, inclusive, of the TIA that impose duties on any Person (including provisions automatically deemed included in an indenture unless the indenture provides that such provisions are excluded) are a part of and govern this Indenture, except as, and
to the extent, they are expressly excluded from this Indenture, as permitted by the TIA. 
  
 11.02    Notices. 
  
 Any notice, request or other communication required or permitted to be given hereunder shall be in writing and delivered, telecopied or mailed by first-class mail, postage prepaid, addressed as follows: 
  
 if to the Company: 
  
 Southwest Gas Corporation 
 5241 Spring Mountain Road 
 P.O. Box 98510 
 Las Vegas, Nevada 89193-8510 
 Facsimile No.: (702) 364-8542 
 Attention: Treasurer 
  
 if to the
Trustee: 
  
 BNY Midwest Trust Company 

2 North LaSalle Street, Suite 1020 
 Chicago, Illinois 60602 
 Facsimile No. (312) 827-8542 
 Attention: Corporate Trust Department 
  
 The Company or the Trustee, by giving notice to the other, may designate additional or different addresses for subsequent notices of communications. The
Company shall notify the holder, if any, of Senior Indebtedness of any such additional or different addresses of which the Company receives notice from the Trustee. 
  
 Any notice or communication given to a Holder shall be mailed or delivered to the Holder at the Holder’s address as it
appears on the Register of the Registrar and shall be sufficiently given if mailed within the time prescribed. 
  
 Failure to mail a notice or communication to a Holder or any defect in it shall not affect its sufficiency with respect to other Holders. If a notice or
communication is mailed in the manner provided above, it is duly given, whether or not received by the addressee. 
  

 45 

 If the Company mails a notice or communication to the Holders, it shall mail a copy to the Trustee and
each Registrar, Paying Agent or co-Registrar. 
  
 11.03    Communication by Holders with Other Holders. 
  
 Holders may communicate, pursuant to TIA Section 312(b), with other Holders with respect to their rights under this Indenture or the Trust Debt Securities. The Company, the Trustee, the Registrar, the Paying Agent and
anyone else shall have the protection of TIA Section 312(c). 
  
 11.04    Certificate and Opinion as to Conditions Precedent. 
  
 Upon any request or application by the Company to the Trustee to take any action under this Indenture, the Company shall furnish to the Trustee:

  
 (1)    an Officer’s
Certificate (complying with Section 11.05 hereof) stating that, in the opinion of such Officer, all conditions precedent to the taking of such action have been complied with; and 
  
 (2)    if appropriate, an Opinion of Counsel (complying with Section 11.05 hereof)
stating that, in the opinion of such counsel all such conditions precedent to the taking of such action have been complied with. 
  
 11.05    Statements Required in Certificate or Opinion. 
  
 Each Officer’s Certificate and Opinion of Counsel with respect to compliance with a covenant or condition provided for
in this Indenture shall include: 
  
 (1)    a statement that each Person making such Officer’s Certificate or Opinion of Counsel has read such covenant or condition; 
  
 (2)    a brief statement as to the nature and scope of the examination or investigation
upon which the statements or opinions contained in such Officer’s Certificate or Opinion of Counsel are based; 
  
 (3)    a statement that, in the opinion of each such Person, such Person has made such examination or investigation as
is necessary to enable such Person to express an informed opinion as to whether or not such covenant or condition has been complied with; and 
  
 (4)    a statement that, in the opinion of such Person, such covenant or condition has been complied with; provided,
however, that with respect to matters of fact not involving any legal conclusion, an Opinion of Counsel may rely on an Officer’s Certificate or certificates of public officials. 
  

 46 

 11.06    Severability Clause. 
  
 If any provision in this Indenture or in the Trust Debt Securities shall be
invalid, illegal or unenforceable, the validity, legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby. 
  

11.07    Rules by Trustee, Paying Agent and Registrar. 
  
 The Trustee may make reasonable rules for action by or a meeting of Holders. The Registrar and Paying Agent may make
reasonable rules for their functions. 
  
 11.08    Legal Holidays. 
  
 If any specified date (including a date for giving notice) is a Legal Holiday, the action to be taken on such date shall be taken on the next succeeding day that is not a Legal Holiday, and if such action is a payment in respect of the
Trust Debt Securities, unless otherwise specified pursuant to Section 2.01 hereof no principal, premium (if any) or interest installment shall accrue for the intervening period; except that if any interest payment is due on a Legal Holiday and the
next succeeding day is in the next succeeding calendar year, such payment shall be made on the Business Day immediately preceding such Legal Holiday. 
  
 11.09    Governing Law. 
  
 This Indenture and the Trust Debt Securities shall be governed by and construed in accordance with the laws of the State of New York as applied to
contracts made and performed within the State of New York, without regard to its principles of conflicts of laws. 
  
 11.10    No Recourse Against Others. 
  

No director, officer, employee or stockholder, as such, of the Company shall have any liability for any obligations of the Company under the Trust Debt
Securities or this Indenture or for any claim based on, in respect of or by reason of such obligations their creation. By accepting a Trust Debt Security, each Holder shall waive and release all such liability. The waiver and release shall be part
of the consideration for the issue of the Trust Debt Securities. 
  
 11.11    Successors. 
  
 All
agreements of the Company in this Indenture and Trust Debt Securities shall bind its successors and assigns. All agreements of the Trustee in this Indenture shall bind its successors and assigns. 
  
 11.12    Multiple Original Copies of this Indenture.

  
 The parties may sign any number of copies of this
Indenture. Each signed copy shall be an original, but all of them together represent the same agreement. Any signed copy shall be sufficient proof of this Indenture. 
  

 47 

 11.13    No Adverse Interpretation of Other Agreements. 
  
 This Indenture may not be used to interpret another indenture, loan or debt
agreement of the Company or any subsidiary. Any such indenture, loan or debt agreement may not be used to interpret this Indenture. 
  
 11.14    Table of Contents: Headings. Etc. 
  
 The Table of Contents, Cross-Reference Table, and headings of the Articles and Sections of this Indenture have been inserted
for convenience of reference only, are not to be considered a part hereof, and shall in no way modify or restrict any of the terms or provisions hereof. 
  
 11.15    Benefits of Indenture. 
  
 Except as otherwise expressly provided herein with respect to holders of Senior Indebtedness and holders of Preferred Trust Securities, nothing in this
Indenture or in the Trust Debt Securities, express or implied, shall give to any person, other than the parties hereto and their successors hereunder and the Holders of the Trust Debt Securities, any benefit or any legal or equitable right, remedy
or claim under this Indenture. 
  
  

 48 

 SIGNATURES 
  

IN WITNESS WHEREOF, the undersigned, being duly authorized, have executed this Indenture on behalf of the respective parties hereto as of the date
first above written. 
  
  

	SOUTHWEST GAS CORPORATION
		
	 By:
	 	  

	 	 	Name:	 	  

	 	 	Title:	 	  

  
  
  

	BNY MIDWEST TRUST COMPANY, as Trustee
		
	 By:
	 	  

	 	 	Name:	 	  

	 	 	Title:	 	  

  
  

 S-1 

 Exhibit A 
  

SOUTHWEST GAS CORPORATION 
 7.70% Junior
Subordinated Debenture due 2043 
  
 No.____         
  
 IF THE TRUST DEBT SECURITY IS TO BE A GLOBAL TRUST DEBT SECURITY, INSERT—This Trust Debt Security is a global Trust Debt Security within the meaning of the Indenture hereinafter referred to and is registered in the name of a Depositary
or a nominee of a Depositary. This Trust Debt Security is exchangeable for global Trust Debt Securities registered in the name of a person other than the Depositary or its nominee only in the limited circumstances described in the Indenture, and no
transfer of this Trust Debt Security (other than a transfer of this Trust Debt Security as a whole by the Depositary to a nominee of the Depositary or by a nominee of the Depositary to the Depositary or another nominee of the Depositary) may be
registered except in limited circumstances. Every Trust Debt Security delivered upon registration of transfer of, or in exchange for, or in lieu of, this global Trust Debt Security shall be a global Trust Debt Security, subject to the foregoing,
except in the limited circumstances described above. 
  
 Unless
this certificate is presented by an authorized representative of The Depository Trust Company, a New York corporation (“DTC”), to the issuer or its agent for registration of transfer, exchange or payment, and any certificate issued is
registered in the name of Cede & Co. or in such other name as requested by an authorized representative of DTC (or to such other entity as is requested by an authorized representative of DTC) and any payment is made to Cede & Co. (or to such
other entity as is requested by an authorized representative of DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY ANY PERSON IS WRONGFUL inasmuch as the registered owner hereof, Cede & Co., has an interest herein.)

  
 Southwest Gas Corporation, a California corporation (the
“Company”, which term includes any successor company under the Indenture hereinafter referred to), for value received, hereby promises to pay to BNY Midwest Trust Company, as Property Trustee for Southwest Gas Capital II, or registered
assigns, the principal sum of 103,100,000 Dollars on September 15, 2043, and to pay interest on said principal sum from August 25, 2003 or from the most recent Interest Payment Date (as defined below) to which interest has been paid or duly provided
for, quarterly in arrears on March 31, June 30, September 30 and December 31 of each year, commencing September 30, 2003 (each, an “Interest Payment Date”) at a rate equal to 7.70% per annum until the principal hereof shall have become due
and payable, and on any overdue principal and (to the extent that payment of such interest is enforceable under applicable law) on any overdue installment of interest at the same rate per annum. During any time that Property Trustee II is the holder
of this Trust Debt Security, the Company shall pay such additional amounts as may be necessary in order that the Distribution (as defined in the Trust II Agreement) then due and payable by Trust II on its Preferred Trust Securities shall not be
reduced as a result of any additional taxes, duties and other governmental charges of whatever nature (other than withholding taxes) to which Trust II has become subject. 
  
 In the event that any Interest Payment Date is not a Business Day, then interest will be payable on the next succeeding day
which is a Business Day (and without any interest or other 
  

 A-1 

 payment in respect of any such delay), except that, if such Business Day is in the next succeeding calendar year, such
payment shall be made on the immediately preceding Business Day, in each case with the same force and effect as if made on such date. The interest installment so payable, and punctually paid or duly provided for, on any Interest Payment Date will,
as provided in the Indenture, be paid to the Person in whose name this Trust Debt Security is registered at the close of business on the Regular Record Date for such interest installment, which shall be the 15th day (whether or not a Business Day)
preceding the applicable Interest Payment Date, provided that if all of the Series II Trust Debt Securities (as defined below) are then held by Southwest Gas Capital II (the “Trust”) or the Series II Trust Debt Securities are held in
book-entry-only form, the Regular Record Date shall be the close of business on the Business Day next preceding such Interest Payment Date. Any such interest installment not punctually paid or duly provided for shall forthwith cease to be payable to
the Holder on such Regular Record Date, and may be paid to the Person in whose name this Trust Debt Security is registered at the close of business on a Special Record Date to be fixed by the Trustee (as defined below) for the payment of such
defaulted interest, notice whereof shall be given to the Holders of the Series II Trust Debt Securities not less than 7 days prior to such Special Record Date, as more fully provided in the Indenture. 
  
 Payment of the principal of and interest on this Trust Debt Security will be
made in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and private debts. Payments of interest on an Interest Payment Date will be made by check mailed to the Holder hereof at
the address shown in the Register or, at the option of the Holder hereof, to such other place in the United States of America as the Holder hereof shall designate to the Trustee in writing. At the request of a Holder of at least $10,000,000
aggregate principal amount of Series II Trust Debt Securities, interest on such Trust Debt Securities will be payable by wire transfer within the continental United States in immediately available funds to the bank account number specified in
writing by such Holder to the Registrar prior to the Regular Record Date. 
  
 The principal hereof and interest due hereon on the Stated Maturity Date or a Redemption Date (other than an Interest Payment Date) will be paid in immediately available funds only upon surrender of this Trust Debt
Security at the principal corporate office of BNY Midwest Trust Company, Paying Agent, in Chicago, Illinois, or at such other office or agency of the Paying Agent as the Company shall designate by written notice to the Holder of this Trust Debt
Security. 
  
 The indebtedness evidenced by this Trust Debt
Security is, to the extent provided in the Indenture, subordinate and subject in right of payment to the prior payment in full of all Senior Indebtedness, and this Trust Debt Security is issued subject to the provisions of the Indenture with respect
thereto. The Holder of this Trust Debt Security, by accepting the same, (a) agrees to and shall be bound by such provisions, (b) authorizes and directs the Trustee on his behalf to take such action as may be necessary or appropriate to acknowledge
or effectuate the subordination so provided and (c) appoints the Trustee his attorney-in-fact for any and all such purposes. The Holder of this Trust Debt Security, by his acceptance hereof, hereby waives all notice of the acceptance of the
subordination provisions contained herein and in the Indenture by each holder of Senior Indebtedness, whether now outstanding or hereafter incurred, and waives reliance by each such holder upon said provisions. 
  

 A-2 

 This Trust Debt Security is one of a duly authorized series of Trust Debt Securities of the Company
(herein sometimes referred to as the “Series II Trust Debt Securities”), specified in the Indenture, limited in aggregate principal amount to $103,100,000 , issued under and pursuant to an Indenture dated as of August 25, 2003 (the
“Indenture”) executed and delivered between the Company and BNY Midwest Trust Company, as trustee (the “Trustee”). The Series II Trust Debt Securities are initially being issued to the Trust, to be held on behalf of the Trust by
its property trustee (the “Property Trustee”). Concurrently with the issuance of the Series II Trust Debt Securities, the Trust is issuing its trust securities, representing undivided beneficial interests in the assets of the Trust and
having an aggregate liquidation amount equal to the principal amount of the Series II Trust Debt Securities, including the Trust’s 7.70% Preferred Trust Securities (the “Preferred Trust Securities”). By the terms of the Indenture,
Trust Debt Securities are issuable in series which may vary as to amount, date of maturity, rate of interest and in other respects as in the Indenture provided. Reference is made to the Indenture for a description of the rights, limitations of
rights, obligations, duties and immunities thereunder of the Trustee, the Company and Holders of the Trust Debt Securities. Each term used in this Trust Debt Security which is defined in the Indenture and not defined herein shall have the meaning
assigned to it in the Indenture. 
  
 At the option of the Company,
the Series II Trust Debt Securities are redeemable prior to maturity (i) at any time and from time to time on or after August 25, 2008, in whole or in part, and (ii) if a Special Event shall occur and be continuing, in whole (but not in part), at a
price equal to $25 per Series II Trust Debt Security plus accrued interest to the Redemption Date. A “Special Event” means either a “Tax Event” or an “Investment Company Event”, as the case may be. “Tax Event”
means that the Company shall have received an opinion of nationally recognized independent tax counsel (which may be regular counsel to the Company or an Affiliate, but not an employee thereof and which must be acceptable to the Property Trustee of
the Trust) experienced in such matters to the effect that, as a result of any amendment to, or change (including any announced prospective change) in, the laws (or any regulations thereunder) of the United States or any political subdivision or
taxing authority thereof or therein affecting taxation, or as a result of any official administrative pronouncement or judicial decision interpreting or applying such laws or regulations, which amendment or change is effective or such interpretation
or pronouncement is announced on or after the date of original issuance of the Preferred Trust Securities, there is more than an insubstantial risk that (i) the Trust is, or will be within 90 days of the date of such opinion, subject to United
States Federal income tax with respect to interest received or accrued on the Trust Debt Securities, (ii) interest payable by the Company to the Trust on the Series II Trust Debt Securities is not, or within 90 days of the date of such opinion will
not be, deductible by the Company, in whole or in part, for United States Federal income tax purposes or (iii) the Trust is, or will be within 90 days of the date of such opinion, subject to more than a de minimis amount of other taxes, duties,
assessments or other governmental charges. “Investment Company Event” means that the Company shall have received an opinion of nationally recognized independent counsel (which may be regular counsel to the Company or an Affiliate, but not
an employee thereof and which must be acceptable to the Property Trustee of the Trust) experienced in such matters to the effect that, as a result of the occurrence of a change in law or regulation or a change in interpretation or application of law
or regulation by any legislative body, court, governmental agency or regulatory authority (a “Change in 1940 Act Law”), there is more than an insubstantial risk that the Trust is or within 90 days of the date of such opinion will be
considered an “investment company” that is required to 
  

 A-3 

 be registered under the Investment Company Act of 1940, as amended, which Change in 1940 Act Law becomes effective or
would become effective, as the case may be, on or after the date of original issuance of the Preferred Trust Securities. 
  
 At least 30 days but not more than 60 days before the Redemption Date, the Trustee shall mail or cause to be mailed a notice of redemption by first-class
mail, postage prepaid, to each Holder of Series II Trust Debt Securities to be redeemed. 
  
 In the event of redemption of this Trust Debt Security in part only, a new Series II Trust Debt Security or Trust Debt Securities for the unredeemed portion hereof will be issued in the name of the Holder hereof upon
the cancellation hereof. 
  
 In case an Event of Default with
respect to the Series II Trust Debt Securities occurs and is continuing, the principal of and interest on the Series II Trust Debt Securities may (and, in certain circumstances, shall) be declared, and upon such declaration shall become, due and
payable, in the manner, with the effect and subject to the conditions provided in the Indenture. 
  
 The Indenture contains provisions for defeasance at any time of the entire indebtedness of this Trust Debt Security upon compliance by the Company with
certain conditions set forth therein. 
  
 Subject to certain
exceptions in the Indenture which require the consent of every Holder, the Company and the Trustee may amend the Indenture or may waive future compliance by the Company with any provisions of the Indenture, with the consent of the Holders of at
least a majority in aggregate principal amount of the Trust Debt Securities of each series affected thereby, provided that if the Series II Trust Debt Securities are held by the Trust, no such amendment or waiver that adversely affects the holders
of the Preferred Trust Securities shall be effective without the prior consent of the holders of at least a majority in aggregate liquidation amount of the outstanding Preferred Trust Securities. Subject to certain exceptions in the Indenture,
without the consent of any Holder, the Company and the Trustee may amend the Indenture to cure any ambiguity, defect or inconsistency, to bind a successor to the obligations of the Indenture, to provide for uncertificated Trust Debt Securities in
addition to certificated Trust Debt Securities, to comply with any requirements of the Trust Debt Securities and the Securities and Exchange Commission in connection with the qualification of the Indenture under the TIA, or to make any change that,
in the reasonable judgment of the Company, does not adversely affect the rights of any Holder. Amendments bind all Holders and subsequent Holders. 
  
 No reference herein to the Indenture and no provision of this Trust Debt Security or the Indenture shall alter or impair the obligation of the Company,
which is absolute and unconditional, to pay the principal of and interest on this Trust Debt Security at the time and place and at the rate and in the money herein prescribed. 
  
 So long as no Event of Default with respect to the Series II Trust Debt Securities has occurred and is continuing, the
Company shall have the right at any time and from time to time to extend the interest payment period of the Series II Trust Debt Securities for up to 20 consecutive quarterly periods (the “Extension Period”), provided that no Extension
Period shall extend beyond the Stated Maturity Date or Redemption Date of any Series II Trust Debt 
  

 A-4 

 Security. At the end of the Extension Period, the Company shall pay all interest then accrued and unpaid (together with
interest thereon at the rate specified for the Series II Trust Debt Securities, compounded quarterly, to the extent that payment of such interest is enforceable under applicable law). Prior to the termination of any such Extension Period, the
Company may further extend such Extension Period, provided that such Extension Period, together with all such previous and further extensions, shall not exceed 20 consecutive quarterly periods and shall not extend beyond the Stated Maturity
Date or Redemption Date of any Series II Trust Debt Security. At the termination of any such Extension Period and upon the payment of all amounts then due, the Company may elect to begin a new Extension Period, subject to the foregoing restrictions.

  
 Series II Trust Debt Securities are issuable only in
registered form without coupons in denominations of $25 and any integral multiple thereof. As provided in the Indenture and subject to certain limitations therein set forth, this Trust Debt Security is exchangeable for a like aggregate principal
amount of Series II Trust Debt Securities of a different authorized denomination, as requested by the Holder surrendering the same. 
  
 As provided in the Indenture and subject to certain limitations therein set forth, this Trust Debt Security is transferable by the Holder hereof upon
surrender of this Trust Debt Security for registration of transfer at the office or agency of the Registrar accompanied by a written instrument or instruments of transfer in form satisfactory to the Registrar duly executed by the Holder hereof or
his attorney duly authorized in writing, and thereupon one or more new Series II Trust Debt Securities of authorized denominations and for the same aggregate principal amount will be issued to the designated transferee or transferees. No service
charge will be made for any such transfer, but the Company may require payment of a sum sufficient to cover any tax or other governmental charge payable in relation thereto. 
  
 Prior to presentment for registration of transfer of this Trust Debt Security, the Company, the Trustee, any Paying Agent
and any Registrar may deem and treat the Holder hereof as the absolute owner hereof (whether or not this Trust Debt Security shall be overdue and notwithstanding any notice of ownership or writing hereon made by anyone other than the Registrar) for
the purpose of receiving payment of or on account of the principal hereof and interest due hereon and for all other purposes, and neither the Company nor the Trustee nor any Paying Agent nor any Registrar shall be affected by any notice to the
contrary. 
  
 No recourse shall be had for the payment of the
principal of or the interest on this Trust Debt Security, or for any claim based hereon, or otherwise in respect hereof, or based on or in respect of the Indenture, against any incorporator, shareholder officer or director, past, present or future,
as such, of the Company or of any 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, all such liability being, by the acceptance
hereof and as part of the consideration for the issuance hereof, expressly waived and released. 
  
 This Trust Debt Security shall not be valid until an authorized signatory of the Trustee manually signs and dates the Trustee’s Certificate of
Authentication below. 
  

 A-5 

 IN WITNESS WHEREOF, the Company has caused this Trust Debt Security to be signed manually or by facsimile
by its duly authorized officers and a facsimile of its corporate seal to be affixed hereto or imprinted hereon. 
  
  

	 	 	 	 	 SOUTHWEST GAS CORPORATION

				
	[SEAL]	 	 	 	By:	 	  

	 	 	 	 	 	 	 	 	Name:	 	  

	 	 	 	 	 	 	 	 	Title:	 	  

  
  
 Attest: 
  
  
                                       
                                        
                                     
 (Assistant) Secretary 
  
 TRUSTEE’S CERTIFICATE OF AUTHENTICATION 
  
 This is one of the Trust Debt Securities, of the series 
 designated, referred to in the
within-mentioned Indenture. 
  
  
  

	BNY MIDWEST TRUST COMPANY, as Trustee
		
	 By:
	 	  

	 	 	Authorized Signatory
	 	 	 
		
	 Dated:
	 	  

	 	 	 

  
  

 A-6 

 ASSIGNMENT FORM 
  
 To assign this Trust Debt Security, fill in the form below: (I) or (we) assign and transfer this Trust Debt Security to:

  
  
                                       
                                        
                                        
                                        
                                        
                                        
                    
 (Insert
assignee’s social security or tax I.D. number) 
  
  
                                       
                                        
                                        
                                        
                                        
                                        
                    
 (Print or type
assignee’s name, address and zip code) 
  
  
 and irrevocably appoint __________________________________ agent to transfer this Trust Debt Security on the books of the Register. The agent may substitute another to
act for him. 
  
  
 Dated:                                     
                                        
                     Signature:                 
                                        
                                        

  
 (Sign exactly as your name
appears on the other side 
 of this Trust Debt Security) 
  
 Signature
Guaranty:                                      
                                      
  
 Signatures must be guaranteed by an “eligible guarantor institution” meeting the
requirements of the Trustee, which requirements include membership or participation in the Security Transfer Agent Medallion Program (“STAMP:) or such other “signature guarantee program” as may be determined by the Trustee in addition
to, or in substitution for, STAMP, all in accordance with the Securities Exchange Act of 1934, as amended. 
  

 A-7

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