INDENTURE

Exhibit 4.1

AMERICANWEST BANCORPORATION

as Issuer

INDENTURE

Dated as of              , 2008

WILMINGTON TRUST COMPANY

as Trustee

FIXED RATE JUNIOR SUBORDINATED DEBT SECURITIES DUE 2038

TABLE OF CONTENTS

i

ii

iii

EXHIBITS

EXHIBIT A Form of Debt Security

EXHIBIT B Form of Certificate of Officer of the Company

iv

THIS INDENTURE, dated as of              , 2008, between AmericanWest Bancorporation, a bank holding company incorporated in Washington (hereinafter sometimes called the “Company”), and Wilmington Trust Company, a Delaware banking corporation, as trustee (hereinafter sometimes called the “Trustee”).

WITNESSETH :

WHEREAS, for its lawful corporate purposes, the Company has duly authorized the issuance of its Fixed Rate Junior Subordinated Debt Securities due 2038 (the “Debt Securities”) under this Indenture and to provide, among other things, for the execution and authentication, delivery and administration thereof, the Company has duly authorized the execution of this Indenture.

NOW, THEREFORE, in consideration of the premises, and the purchase of the Debt Securities by the holders thereof, the Company covenants and agrees with the Trustee for the equal and proportionate benefit of the respective holders from time to time of the Debt Securities as follows:

ARTICLE I

DEFINITIONS

Section 1.01 Definitions .

The terms defined in this Section 1.01 (except as herein otherwise expressly provided or unless the context otherwise requires) for all purposes of this Indenture and of any indenture supplemental hereto shall have the respective meanings specified in this Section 1.01. All accounting terms used herein and not expressly defined shall have the meanings assigned to such terms in accordance with generally accepted accounting principles and the term “generally accepted accounting principles” means such accounting principles as are generally accepted in the United States at the time of any computation. The words “herein,” “hereof” and “hereunder” and other words of similar import refer to this Indenture as a whole and not to any particular Article, Section or other subdivision.

“Additional Amounts” has the meaning set forth in Section 3.06.

“Additional Provisions” has the meaning set forth in Section 15.01.

“Administrative Action” has the meaning specified within the definition of “Tax Event” in this Section 1.01.

“Applicable Depositary Procedures” means, with respect to any transfer or transaction involving a Book-Entry Capital Security or a Debt Security represented by a Global Debenture, the rules and procedures of the Depositary for such Book-Entry Capital Security or Debt Security represented by a Global Debenture, in each case to the extent applicable to such transaction and as in effect from time to time.

“Authenticating Agent” means any agent or agents of the Trustee which at the time shall be appointed and acting pursuant to Section 6.12.

1

“Bankruptcy Law” means Title 11 of the United States Code, or any successor statute thereto, in each case as amended from time to time.

“Board of Directors” means the board of directors or the executive committee or any other duly authorized designated officers of the Company.

“Board Resolution” means a copy of a resolution certified by the Secretary or an 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 and delivered to the Trustee.

“Book-Entry Capital Security” means a Capital Security the ownership and transfers of which shall be reflected and made, as applicable, through book entries by the Depositary.

“Business Day” means any day other than a Saturday, Sunday or any other day on which banking institutions in Wilmington, Delaware, The City of New York or Spokane, Washington are permitted or required by law or executive order to close.

“Capital Securities” means undivided beneficial interests in the assets of the Trust which rank pari passu with Common Securities issued by the Trust; provided , however , that if an Event of Default (as defined in the Declaration) has occurred and is continuing, the rights of holders of such Common Securities to payment in respect of distributions and payments upon liquidation, redemption and otherwise are subordinated to the rights of holders of such Capital Securities.

“Capital Securities Guarantee” means the guarantee agreement that the Company will enter into with Wilmington Trust Company or other Persons that operates directly or indirectly for the benefit of holders of Capital Securities of the Trust.

“Capital Treatment Event” means the receipt by the Company and the Trust of an Opinion of Counsel experienced in such matters to the effect that, as a result of (a) any amendment to, or change (including any announced prospective change) in, the laws, rules or regulations of the United States or any political subdivision thereof or therein, or any rules, guidelines or policies of an applicable regulatory authority for the Company or (b) any official or administrative pronouncement or action or decision interpreting or applying such laws, rules or regulations, which amendment or change is effective or which pronouncement, action or decision is announced on or after the date of original issuance of the Debt Securities, there is more than an insubstantial risk that the Company will not, within 90 days of the date of such opinion, be entitled to treat Capital Securities as “Tier 1 Capital” or “Tier II Capital” (or the then equivalents) for purposes of the capital adequacy guidelines of the Federal Reserve (or any successor regulatory authority with jurisdiction over bank holding companies), or any capital adequacy guidelines as then in effect and applicable to the Company; provided , however , that the inability of the Company to treat all or any portion of the aggregate Liquidation Amount of the Capital Securities as “Tier 1 Capital” or “Tier II Capital” shall not constitute the basis for a Capital Treatment Event if such inability results from the Company having preferred stock, minority interests in consolidated subsidiaries and any other class of security or interest which the Federal Reserve (or any successor regulatory authority with jurisdiction over bank holding

2

companies) may now or hereafter accord “Tier 1 Capital” or “Tier II Capital” treatment that, in the aggregate, exceed the amount which may now or hereafter qualify for treatment as “Tier 1 Capital” or “Tier II Capital” under applicable capital adequacy guidelines the Federal Reserve (or any successor regulatory authority with jurisdiction over bank holding companies), applied as if the Company (or its successor) were a bank holding company for purposes of the capital adequacy guidelines of the Federal Reserve (or any successor regulatory authority with jurisdiction over bank holding companies); provided , further , that the distribution of the Debt Securities in connection with the liquidation of the Trust by the Company shall not in and of itself constitute a Capital Treatment Event unless such liquidation shall have occurred in connection with a Tax Event or an Investment Company Event. For the avoidance of doubt, the inability of the Company to treat all or any portion of the aggregate Liquidation Amount of the Capital Securities as “Tier 1 Capital” as a result of the changes effected by the final rule adopted by the Federal Reserve on March 1, 2005 shall not constitute the basis for a Capital Treatment Event.

“Certificate” means a certificate signed by any one of the principal executive officer, the principal financial officer or the principal accounting officer of the Company.

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

“Common Securities” means undivided beneficial interests in the assets of the Trust which are designated as “Common Securities” and rank pari passu with Capital Securities issued by the Trust; provided , however , that if an Event of Default (as defined in the Declaration) has occurred and is continuing, the rights of holders of such Common Securities to payment in respect of distributions and payments upon liquidation, redemption and otherwise are subordinated to the rights of holders of such Capital Securities.

“Company” means AmericanWest Bancorporation, a bank holding company incorporated in Washington, and, subject to the provisions of Article XI, shall include its successors and assigns.

“Debt Security” or “Debt Securities” has the meaning stated in the first recital of this Indenture.

“Debt Security Register” has the meaning specified in Section 2.05.

“Declaration” means the Amended and Restated Declaration of Trust of the Trust, dated as of              , 2008, as amended or supplemented from time to time.

“Default” means any event, act or condition that with notice or lapse of time, or both, would constitute an Event of Default.

“Defaulted Interest” has the meaning set forth in Section 2.08.

“Deferred Interest” has the meaning set forth in Section 2.11.

3

“Depositary” means an organization registered as a clearing agency under the Exchange Act that is designated as Depositary by the Company. DTC will be the initial Depositary.

“Depositary Participant” means a broker, dealer, bank, other financial institution or other Person for whom from time to time the Depositary effects book-entry transfers and pledges of securities deposited with or on behalf of the Depositary.

“DTC” means The Depository Trust Company, a New York corporation.

“Event of Default” means any event specified in Section 5.01, which has continued for the period of time, if any, and after the giving of the notice, if any, therein designated.

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

“Extension Period” has the meaning set forth in Section 2.11.

“Federal Reserve” means the Board of Governors of the Federal Reserve System.

“Global Debenture” means a global certificate that evidences all or part of the Debt Securities the ownership and transfers of which shall be reflected and made, as applicable, through book entries by the Depositary and the Depositary Participants.

“Indenture” means this Indenture as originally executed or, if amended or supplemented as herein provided, as so amended or supplemented, or both.

“Institutional Trustee” has the meaning set forth in the Declaration.

“Interest Payment Date” means                      ,                      ,                      and                      of each year, commencing on              , 2008, subject to Section 14.07.

“Interest Rate” means a per annum rate of interest equal to      %.

“Investment Company Event” means the receipt by the Company and the Trust of an Opinion of Counsel experienced in such matters to the effect that, as a result of a change in law or regulation (including any announced prospective change) or written change in interpretation or application of law or regulation by any legislative body, court, governmental agency or regulatory authority, 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 be registered under the Investment Company Act of 1940, as amended, which change or prospective change becomes effective, as the case may be, on or after the date of the original issuance of the Debt Securities.

“Liquidation Amount” means the liquidation amount of $10.00 per Trust Security.

4

“Major Depository Institution Subsidiary” means any subsidiary of the Company that (i) is a depository institution and (ii) meets the definition of “significant subsidiary” within the meaning of Rule 405 under the Securities Act.

“Maturity Date” means              , 2038, subject to Section 14.07.

“Officers’ Certificate” means a certificate signed by the Chairman of the Board, the Vice Chairman, the President or any Vice President, and by the Chief Financial Officer, the Treasurer, an Assistant Treasurer, the Comptroller, an Assistant Comptroller, the Secretary or an Assistant Secretary of the Company, and delivered to the Trustee. Each such certificate shall include the statements provided for in Section 14.06 if and to the extent required by the provisions of such Section.

“Opinion of Counsel” means an opinion in writing signed by legal counsel, who may be an employee of or counsel to the Company or may be other counsel reasonably satisfactory to the Trustee. Each such opinion shall include the statements provided for in Section 14.06 if and to the extent required by the provisions of such Section.

The term “outstanding,” when used with reference to Debt Securities, subject to the provisions of Section 7.04, means, as of any particular time, all Debt Securities authenticated and delivered by the Trustee or the Authenticating Agent under this Indenture, except:

(a) Debt Securities theretofore canceled by the Trustee or the Authenticating Agent or delivered to the Trustee for cancellation;

(b) Debt Securities, or portions thereof, for the payment or redemption of which moneys in the necessary amount shall have been deposited in trust with the Trustee or with any Paying Agent (other than the Company) or shall have been set aside and segregated in trust by the Company (if the Company shall act as its own Paying Agent); provided , that, if such Debt Securities, or portions thereof, are to be redeemed prior to maturity thereof, notice of such redemption shall have been given as provided in Articles X and XIV or provision satisfactory to the Trustee shall have been made for giving such notice; and

(c) Debt Securities paid pursuant to Section 2.06 or in lieu of or in substitution for which other Debt Securities shall have been authenticated and delivered pursuant to the terms of Section 2.06 unless proof satisfactory to the Company and the Trustee is presented that any such Debt Securities are held by bona fide holders in due course.

“Optional Redemption Date” has the meaning set forth in Section 10.01.

“Optional Redemption Price” means an amount in cash equal to [100]% of the principal amount of the Debt Securities being redeemed plus unpaid interest accrued on such Debt Securities to the related Optional Redemption Date.

“Paying Agent” has the meaning set forth in Section 3.04(e).

“Person” means a legal person, including any individual, corporation, estate, partnership, joint venture, association, joint-stock company, limited liability company, trust, unincorporated association, or government or any agency or political subdivision thereof, or any other entity of whatever nature.

5

“Predecessor Security” of any particular Debt Security means every previous Debt Security evidencing all or a portion of the same debt as that evidenced by such particular Debt Security; and, for the purposes of this definition, any Debt Security authenticated and delivered under Section 2.06 in lieu of a lost, destroyed or stolen Debt Security shall be deemed to evidence the same debt as the lost, destroyed or stolen Debt Security.

“Principal Office of the Trustee” means the office of the Trustee at which at any particular time its corporate trust business shall be principally administered, which at all times shall be located within the United States and at the time of the execution of this Indenture shall be Rodney Square North, 1100 North Market Street, Wilmington, DE 19890-0001.

“Responsible Officer” means, with respect to the Trustee, any officer within the Principal Office of the Trustee with direct responsibility for the administration of the Indenture, including any vice-president, any assistant vice-president, any secretary, any assistant secretary, the treasurer, any assistant treasurer, any trust officer or other officer of the Principal Office 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.

“Securities Act” means the Securities Act of 1933, as amended.

“Securityholder,” “holder of Debt Securities” or other similar terms, means any Person in whose name at the time a particular Debt Security is registered on the Debt Security Register.

“Senior Indebtedness” means, with respect to the Company, (i) the principal, premium, if any, and interest in respect of (A) indebtedness of the Company for money borrowed, as well as similar obligations arising from off-balance sheet guarantees and direct credit substitutes and (B) indebtedness evidenced by securities, debentures, notes, bonds or other similar instruments issued by the Company, (ii) all capital lease obligations of the Company, (iii) all obligations of the Company issued or assumed as the deferred purchase price of property, all conditional sale obligations of the Company and all obligations of the Company under any title retention agreement (but excluding trade accounts payable and other accrued liabilities arising in the ordinary course of business), (iv) all obligations of the Company for the reimbursement of any letter of credit, any banker’s acceptance, any security purchase facility, any repurchase agreement or similar arrangement, all obligations associated with derivative products such as interest rate and foreign exchange contracts and commodity contracts, any interest rate swap, any other hedging arrangement, any obligation under options or any similar credit or other transaction, (v) all obligations of the type referred to in clauses (i) through (iv) above of other Persons for the payment of which the Company is responsible or liable as obligor, guarantor or otherwise and (vi) all obligations of the type referred to in clauses (i) through (v) above of other Persons secured by any lien on any property or asset of the Company (whether or not such obligation is assumed by the Company), whether the obligations of the type referred to in clauses

6

(i) through (vi) above were incurred on or prior to the date of this Indenture or thereafter incurred, unless, with the prior approval of the Federal Reserve if not otherwise generally approved, it is provided in the instrument creating or evidencing the same or pursuant to which the same is outstanding that such obligations are not superior or are pari passu in right of payment to the Debt Securities; provided , however , that Senior Indebtedness shall not include (A) any debt securities issued to any trust other than the Trust (or a trustee of such trust) that is a financing vehicle of the Company (a “financing entity”), in connection with the issuance by such financing entity of equity or other securities in transactions substantially similar in structure to the transactions contemplated hereunder and in the Declaration or (B) any guarantees of the Company in respect of the equity or other securities of any financing entity referred to in clause (A) above.

“Special Event” means any of a Tax Event, an Investment Company Event or a Capital Treatment Event.

“Special Redemption Date” has the meaning set forth in Section 10.02.

“Special Redemption Price” means, with respect to the redemption of any Debt Security following a Special Event, an amount in cash equal to      % of the principal amount of Debt Securities to be redeemed prior to              , 2009 and thereafter equal to the percentage of the principal amount of the Debt Securities that is specified below for the Special Redemption Date plus, in each case, unpaid interest accrued thereon to the Special Redemption Date:

“Subsidiary” means, with respect to any Person, (i) any corporation, at least a majority of the outstanding voting stock of which is owned, directly or indirectly, by such Person or one or more of its Subsidiaries or by such Person and one or more of its Subsidiaries, (ii) any general partnership, joint venture or similar entity, at least a majority of the outstanding partnership or similar interests of which shall at the time be owned by such Person or one or more of its Subsidiaries or by such Person and one or more of its Subsidiaries, and (iii) any limited partnership of which such Person or any of its Subsidiaries is a general partner. For the purposes of this definition, “voting stock” means shares, interests, participations or other equivalents in the equity interest (however designated) in such Person having ordinary voting power for the election of a majority of the directors (or the equivalent) of such Person, other than shares, interests, participations or other equivalents having such power only by reason of the occurrence of a contingency.

7

“Tax Event” means the receipt by the Company and the Trust of an Opinion of Counsel 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, or as a result of any official administrative pronouncement (including any private letter ruling, technical advice memorandum, regulatory procedure, notice or announcement (an “Administrative Action”)) or judicial decision interpreting or applying such laws or regulations, regardless of whether such Administrative Action or judicial decision is issued to or in connection with a proceeding involving the Company or the Trust and whether or not subject to review or appeal, which amendment, clarification, change, Administrative Action or decision is enacted, promulgated or announced, in each case on or after the date of original issuance of the Debt 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 income received or accrued on the Debt Securities; (ii) interest payable by the Company on the 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 or otherwise required to pay, or required to withhold from distributions to holders of Trust Securities, more than a de minimis amount of other taxes (including withholding taxes), duties, assessments or other governmental charges.

“Trust” means AmericanWest Capital Trust IV, the Delaware statutory trust, or any other similar trust created for the purpose of issuing Capital Securities in connection with the issuance of Debt Securities under this Indenture, of which the Company is the sponsor.

“Trust Indenture Act” means the Trust Indenture Act of 1939, as amended from time to time, or any successor legislation.

“Trust Securities” means Common Securities and Capital Securities of the Trust.

“Trustee” means the Person identified as “Trustee” in the first paragraph hereof, and, subject to the provisions of Article VI hereof, shall also include its successors and assigns as Trustee hereunder.

“United States” means the United States of America and the District of Columbia.

“U.S. Person” has the meaning given to United States Person as set forth in Section 7701(a)(30) of the Code.

ARTICLE II

DEBT SECURITIES

Section 2.01 Authentication and Dating .

Upon the execution and delivery of this Indenture, or from time to time thereafter, Debt Securities in an aggregate principal amount not in excess of $          may be

8

executed and delivered by the Company to the Trustee for authentication, and the Trustee shall thereupon authenticate and make available for delivery said Debt Securities to or upon the written order of the Company, signed by its Chairman of the Board of Directors, Vice Chairman, President or Chief Financial Officer or one of its Vice Presidents, without any further action by the Company hereunder. In authenticating such Debt Securities, and accepting the additional responsibilities under this Indenture in relation to such Debt Securities, the Trustee shall be entitled to receive, and (subject to Section 6.01) shall be fully protected in relying upon a copy of any Board Resolution or Board Resolutions relating thereto and, if applicable, an appropriate record of any action taken pursuant to such resolution, in each case certified by the Secretary or an Assistant Secretary or other officers with appropriate delegated authority of the Company as the case may be.

The Trustee shall have the right to decline to authenticate and deliver any Debt Securities under this Section if the Trustee, being advised by counsel, determines that such action may not lawfully be taken or if a Responsible Officer of the Trustee in good faith shall determine that such action would expose the Trustee to personal liability to existing Securityholders.

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

Section 2.02 Form of Trustee’s Certificate of Authentication .

The Trustee’s certificate of authentication on all Debt Securities shall be in substantially the following form:

This certificate represents Debt Securities referred to in the within-mentioned Indenture.

Section 2.03 Form and Denomination of Debt Securities .

The Debt Securities shall be substantially in the form of Exhibit A hereto. The Debt Securities shall be in registered form without coupons and in minimum denominations of $100,000 and any multiple of $1,000 in excess thereof. The Debt Securities shall be numbered, lettered, or otherwise distinguished in such manner or in accordance with such plans as the officers executing the same may determine with the approval of the Trustee as evidenced by the execution and authentication thereof.

9

Section 2.04 Execution of Debt Securities .

The Debt Securities shall be signed in the name and on behalf of the Company by the manual or facsimile signature of its Chairman of the Board of Directors, Vice Chairman, President or Chief Financial Officer or one of its Executive Vice Presidents, Senior Vice Presidents or Vice Presidents, under its corporate seal (if legally required) which may be affixed thereto or printed, engraved or otherwise reproduced thereon, by facsimile or otherwise, and which need not be attested. Only such Debt Securities as shall bear thereon a certificate of authentication substantially in the form herein before recited, executed by the Trustee or the Authenticating Agent by the manual or facsimile signature of an authorized officer, shall be entitled to the benefits of this Indenture or be valid or obligatory for any purpose. Such certificate by the Trustee or the Authenticating Agent upon any Debt Security executed by the Company shall be conclusive evidence that the Debt Security so authenticated has been duly authenticated and delivered hereunder and that the holder is entitled to the benefits of this Indenture.

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

Every Debt Security shall be dated the date of its authentication.

Section 2.05 Exchange and Registration of Transfer of Debt Securities .

The Company shall cause to be kept, at the office or agency maintained for the purpose of registration of transfer and for exchange as provided in Section 3.02, a register (the “Debt Security Register”) for the Debt Securities issued hereunder in which, subject to such reasonable regulations as it may prescribe, the Company shall provide for the registration and transfer of all Debt Securities as provided in this Article II. Such register shall be in written form or in any other form capable of being converted into written form within a reasonable time.

Debt Securities to be exchanged may be surrendered at the Principal Office of the Trustee or at any office or agency to be maintained by the Company for such purpose as provided in Section 3.02, and the Company shall execute, the Company or the Trustee shall register and the Trustee or the Authenticating Agent shall authenticate and make available for delivery in exchange therefor, the Debt Security or Debt Securities which the Securityholder making the exchange shall be entitled to receive. Upon due presentment for registration of transfer of any Debt Security at the Principal Office of the Trustee or at any office or agency of the Company maintained for such purpose as provided in Section 3.02, the Company shall execute, the Company or the Trustee shall register and the Trustee or the Authenticating Agent shall authenticate and make available for delivery in the name of the transferee or transferees, a

10

new Debt Security for a like aggregate principal amount. Registration or registration of transfer of any Debt Security by the Trustee or by any agent of the Company appointed pursuant to Section 3.02, and delivery of such Debt Security, shall be deemed to complete the registration or registration of transfer of such Debt Security.

All Debt Securities presented for registration of transfer or for exchange or payment shall (if so required by the Company or the Trustee or the Authenticating Agent) be duly endorsed by, or be accompanied by, a written instrument or instruments of transfer in form satisfactory to the Company and either the Trustee or the Authenticating Agent duly executed by, the holder or such holder’s attorney duly authorized in writing.

No service charge shall be made for any exchange or registration of transfer of Debt Securities, but the Company or the Trustee may require payment of a sum sufficient to cover any tax, fee or other governmental charge that may be imposed in connection therewith other than exchanges pursuant to Section 2.07, Section 9.04 or Section 10.04 not involving any transfer.

The Company or the Trustee shall not be required to exchange or register a transfer of any Debt Security for a period of 15 days immediately preceding the date of selection of Debt Securities for redemption.

Section 2.06 Mutilated, Destroyed, Lost or Stolen Debt Securities .

In case any Debt Security shall become mutilated or be destroyed, lost or stolen, the Company shall execute, and upon its written request the Trustee shall authenticate and deliver, a new Debt Security bearing a number not contemporaneously outstanding, in exchange and substitution for the mutilated Debt Security, or in lieu of and in substitution for the Debt Security so destroyed, lost or stolen. In every case the applicant for a substituted Debt Security shall furnish to the Company and the Trustee such security or indemnity as may be required by them to save each of them harmless, and, in every case of destruction, loss or theft, the applicant shall also furnish to the Company and the Trustee evidence to their satisfaction of the destruction, loss or theft of such Debt Security and of the ownership thereof.

The Trustee may authenticate any such substituted Debt Security and deliver the same upon the written request or authorization of any officer of the Company. Upon the issuance of any substituted Debt Security, 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 connected therewith. In case any Debt Security which has matured or is about to mature or has been called for redemption in full shall become mutilated or be destroyed, lost or stolen, the Company may, instead of issuing a substitute Debt Security, pay or authorize the payment of the same (without surrender thereof except in the case of a mutilated Debt Security) if the applicant for such payment shall furnish to the Company and the Trustee such security or indemnity as may be required by them to save each of them harmless and, in case of destruction, loss or theft, evidence satisfactory to the Company and to the Trustee of the destruction, loss or theft of such Security and of the ownership thereof.

11

Every substituted Debt Security issued pursuant to the provisions of this Section 2.06 by virtue of the fact that any such Debt Security is destroyed, lost or stolen shall constitute an additional contractual obligation of the Company, whether or not the destroyed, lost or stolen Debt Security shall be found at any time, and shall be entitled to all the benefits of this Indenture equally and proportionately with any and all other Debt Securities duly issued hereunder. All Debt Securities shall be held and owned upon the express condition that, to the extent permitted by applicable law, the foregoing provisions are exclusive with respect to the replacement or payment of mutilated, destroyed, lost or stolen Debt Securities and shall preclude any and all other rights or remedies notwithstanding any law or statute existing or hereafter enacted to the contrary with respect to the replacement or payment of negotiable instruments or other securities without their surrender.

Section 2.07 Temporary Debt Securities .

Pending the preparation of definitive Debt Securities, the Company may execute and the Trustee shall authenticate and make available for delivery temporary Debt Securities that are typed, printed, lithographed, typewritten, mimeographed or otherwise produced in any authorized denomination, substantially in the form of the definitive Debt Securities but with such omissions, insertions and variations as may be appropriate for temporary Debt Securities, all as may be determined by the Company. Every such temporary Debt Security shall be executed by the Company and be authenticated by the Trustee upon the same conditions and in substantially the same manner, and with the same effect, as the definitive Debt Securities. Without unreasonable delay, the Company will execute and deliver to the Trustee or the Authenticating Agent definitive Debt Securities and thereupon any or all temporary Debt Securities may be surrendered in exchange therefor, at the Principal Office of the Trustee or at any office or agency maintained by the Company for such purpose as provided in Section 3.02, and the Trustee or the Authenticating Agent shall authenticate and make available for delivery in exchange for such temporary Debt Securities a like aggregate principal amount of such definitive Debt Securities. Such exchange shall be made by the Company at its own expense and without any charge therefor except that in case of any such exchange involving a registration of transfer the Company may require payment of a sum sufficient to cover any tax, fee or other governmental charge that may be imposed in relation thereto. Until so exchanged, the temporary Debt Securities shall in all respects be entitled to the same benefits under this Indenture as definitive Debt Securities authenticated and delivered hereunder.

Section 2.08 Payment of Interest .

Each Debt Security will bear interest at the Interest Rate on the principal thereof, on any overdue principal and (to the extent that payment of such interest is enforceable under applicable law) on Deferred Interest and on any overdue installment of interest (including Defaulted Interest), payable (subject to the provisions of Article XV) on each Interest Payment Date and on the Maturity Date, any Optional Redemption Date or the Special Redemption Date, as the case may be. Interest and any Deferred Interest on any Debt Security that is payable, and is punctually paid or duly provided for by the Company, on any Interest Payment Date shall be paid to the Person in whose name such Debt Security (or one or more Predecessor Securities) is registered at the close of business on the regular record date for such interest installment, except that interest and any Deferred Interest payable on the Maturity Date, any Optional Redemption

12

Date or the Special Redemption Date, as the case may be, other than any Interest Payment Date shall be paid to the Person to whom principal is paid. In case (i) the Maturity Date of any Debt Security or (ii) any Debt Security or portion thereof is called for redemption and the related Optional Redemption Date or the Special Redemption Date, as the case may be, is subsequent to the regular record date with respect to any Interest Payment Date and prior to such Interest Payment Date, interest on such Debt Security will be paid upon presentation and surrender of such Debt Security.

Any interest on any Debt Security, other than Deferred Interest, that is payable, but is not punctually paid or duly provided for by the Company, 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 shall be paid by the Company to the Persons in whose names such Debt Securities (or their respective Predecessor 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 notify the Trustee in writing of the amount of Defaulted Interest proposed to be paid on each such Debt Security and the date of the proposed payment, and at the same time the Company shall deposit with the Trustee an amount of money equal to the aggregate amount proposed to be paid in respect of such Defaulted Interest or shall make arrangements reasonably satisfactory to the Trustee 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 provided in this paragraph. Thereupon the Trustee shall fix a special record date for the payment of such Defaulted Interest, which shall not be more than fifteen nor less than ten days prior to the date of the proposed payment and not less than ten days after the receipt by the Trustee of the notice of the proposed payment. The Trustee shall promptly notify the Company of such special record date and, in the name and at the expense of the Company, shall cause notice of the proposed payment of such Defaulted Interest and the special record date therefor to be mailed, first class postage prepaid, to each Securityholder at his or her address as it appears in the Debt Security Register, not less than ten days prior to such special record date. Notice of the proposed payment of such Defaulted Interest and the special record date therefor having been mailed as aforesaid, such Defaulted Interest shall be paid to the Persons in whose names such Debt Securities (or their respective Predecessor Securities) are registered on such special record date and thereafter the Company shall have no further payment obligation in respect of the Defaulted Interest.

Payments of interest on the Debt Securities shall include interest accrued to but excluding the respective Interest Payment Dates. The amount of interest payable for any interest period shall be computed and paid on the basis of a 360-day year consisting of twelve 30-day months. Any interest scheduled to become payable on an Interest Payment Date occurring during an Extension Period shall not be Defaulted Interest and shall be payable on such other date as may be specified in the terms of such Debt Securities.

The term “regular record date”, as used in this Section, shall mean the fifteenth day prior to the applicable Interest Payment Date, whether or not such day is a Business Day.

Subject to the foregoing provisions of this Section, each Debt Security delivered under this Indenture upon registration of transfer of or in exchange for or in lieu of any other Debt Security shall carry the rights to interest accrued and unpaid, and to accrue, that were carried by such other Debt Security.

13

Section 2.09 Cancellation of Debt Securities Paid, etc .

All Debt Securities surrendered for the purpose of payment, redemption, exchange or registration of transfer, shall, if surrendered to the Company or any Paying Agent, be surrendered to the Trustee and promptly canceled by it, or, if surrendered to the Trustee or any Authenticating Agent, shall be promptly canceled by it, and no Debt Securities shall be issued in lieu thereof except as expressly permitted by any of the provisions of this Indenture. All Debt Securities canceled by any Authenticating Agent shall be delivered to the Trustee. The Trustee shall destroy all canceled Debt Securities unless the Company otherwise directs the Trustee in writing, in which case the Trustee shall dispose of such Debt Securities as directed by the Company. If the Company shall acquire any of the Debt Securities, however, such acquisition shall not operate as a redemption or satisfaction of the indebtedness represented by such Debt Securities unless and until the same are surrendered to the Trustee for cancellation.

Section 2.10 Intentionally Left Blank .

Section 2.11 Extension of Interest Payment Period .

So long as no Event of Default pursuant to Sections 5.01(b), (e), (f), (g), (h) or (i) of this Indenture has occurred and is continuing, the Company shall have the right, from time to time and without causing an Event of Default, to defer payments of interest on the Debt Securities by extending the interest payment period on the Debt Securities for up to 20 consecutive quarterly periods (each such extended interest payment period, together with all previous and further consecutive extensions thereof, is referred to herein as an “Extension Period”). No Extension Period may end on a date other than an Interest Payment Date or extend beyond the Maturity Date, any Optional Redemption Date or the Special Redemption Date, as the case may be. During any Extension Period, interest will continue to accrue on the Debt Securities, and interest on such accrued interest (such accrued interest and interest thereon referred to herein as “Deferred Interest”) will accrue at an annual rate equal to the Interest Rate, compounded quarterly from the date such Deferred Interest would have been payable were it not for the Extension Period, to the extent permitted by applicable law. No interest or Deferred Interest (except any Additional Amounts that may be due and payable) shall be due and payable during an Extension Period, except at the end thereof. At the end of any Extension Period, the Company shall pay all Deferred Interest then accrued and unpaid on the Debt Securities; provided , however , that during any Extension Period, the Company shall be subject to the restrictions set forth in Section 3.08. Prior to the termination of any Extension Period, the Company may further extend such Extension Period, provided , that no Extension Period (including all previous and further consecutive extensions that are part of such Extension Period) shall exceed 20 consecutive quarterly periods. Upon the termination of any Extension Period and upon the payment of all Deferred Interest, the Company may commence a new Extension Period, subject to the foregoing requirements. The Company must give the Trustee notice of its election to begin or extend an Extension Period no later than the close of business on the fifteenth Business Day prior to the applicable Interest Payment Date. The Trustee shall give notice of the Company’s election to begin or extend an Extension Period to the Securityholders, promptly after receipt of notice from the Company of its election to begin or extend an Extension Period.

14

Section 2.12 CUSIP Numbers .

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

Section 2.13 Global Debentures .

(a) Upon the election of an owner of beneficial interests in outstanding Debt Securities, the Debt Securities owned by such beneficial owner shall be issued in the form of one or more Global Debentures. Each Global Debenture issued under this Indenture shall be registered in the name of the Depositary designated by the Company for such Global Debenture or a nominee of such Depositary and delivered to such Depositary or a nominee thereof or custodian therefor, and each such Global Debenture shall constitute a single Debt Security for all purposes of this Indenture.

(b) Notwithstanding any other provision in this Indenture, no Global Debenture may be exchanged in whole or in part for Debt Securities registered, and no transfer of a Global Debenture in whole or in part may be registered in the name of any Person other than the Depositary for such Global Debenture or a nominee thereof unless (i) such Depositary advises the Trustee and the Company in writing that such Depositary is no longer willing or able to properly discharge its responsibilities as Depositary with respect to such Global Debenture, and no qualified successor is appointed by the Company within ninety (90) days of receipt by the Company of such notice, (ii) such Depositary ceases to be a clearing agency registered under the Exchange Act and no successor is appointed by the Company within ninety (90) days after obtaining knowledge of such event or (iii) an Event of Default shall have occurred and be continuing. Upon obtaining knowledge of the occurrence of any event specified in clause (i), (ii) or (iii) above, the Trustee shall notify the Depositary and instruct the Depositary to notify all owners of beneficial interests in such Global Debenture of the occurrence of such event and of the availability of Debt Securities to such beneficial owners requesting the same. Upon the issuance of such Debt Securities and the registration in the Debt Security Register of such Debt Securities in the names of the holders thereof, the Trustee shall recognize such holders as holders of Debt Securities for all purposes of this Indenture and the Debt Securities.

(c) If any Global Debenture is to be exchanged for other Debt Securities or canceled in part, or if another Debt Security is to be exchanged in whole or in part for a beneficial interest in any Global Debenture, then either (i) such Global Debenture shall be so surrendered for exchange or cancellation as provided herein or (ii) the principal amount thereof shall be reduced or increased, subject to Section 2.03, by an amount equal to the portion thereof

15

to be so exchanged or canceled, or equal to the principal amount of such Debt Security to be so exchanged for a beneficial interest therein, as the case may be, by means of an appropriate adjustment made on the records of the Debt Security registrar, whereupon the Trustee, in accordance with the Applicable Depositary Procedures, shall instruct the Depositary or its authorized representative to make a corresponding adjustment to its records. Upon any such surrender or adjustment of a Global Debenture by the Depositary, accompanied by registration instructions, the Company shall execute and the Trustee shall authenticate and deliver Debt Securities issuable in exchange for such Global Debenture (or any portion thereof) in accordance with the instructions of the Depositary. The Trustee may conclusively rely on, and shall be fully protected in relying on, such instructions.

(d) Every Debt Security authenticated and delivered upon registration of transfer of, or in exchange for or in lieu of, a Global Debenture or any portion thereof shall be authenticated and delivered in the form of, and shall be, a Global Debenture, unless such Debt Security is registered in the name of a Person other than the Depositary for such Global Debenture or a nominee thereof.

(e) Debt Securities distributed to holders of Book-Entry Capital Securities (as defined in the Declaration) upon the dissolution of the Trust shall be distributed in the form of one or more Global Debentures registered in the name of the Depositary or its nominee, and deposited with the Debt Securities registrar, as custodian for such Depositary, or with such Depositary, for credit by the Depositary to the owners of beneficial interests in such Book-Entry Capital Securities. Debt Securities distributed to holders of Capital Securities other than Book-Entry Capital Securities upon the dissolution of the Trust shall not be issued in the form of a Global Debenture or any other form intended to facilitate book-entry trading in beneficial interests in such Debt Securities.

(f) The Depositary or its nominee, as the registered owner of a Global Debenture, shall be the holder of such Global Debenture for all purposes under this Indenture and the Debt Securities, and owners of beneficial interests in a Global Debenture shall hold such interests pursuant to the Applicable Depositary Procedures. Accordingly, any such owner’s beneficial interest in a Global Debenture shall be shown only on, and the transfer of such interest shall be effected only through, records maintained by the Depositary or its nominee or its Depositary Participants. The Debt Securities registrar and the Trustee shall be entitled to deal with the Depositary for all purposes of this Indenture relating to a Global Debenture as the sole holder of the Debt Security and shall have no obligation to any beneficial owner of a Global Debenture. Neither the Trustee nor the Debt Securities registrar shall have any liability in respect of any transfers affected by the Depositary or its Depositary Participants.

(g) The rights of owners of beneficial interests in a Global Debenture shall be exercised only through the Depositary and shall be limited to those established by law and agreements between such owners and the Depositary and/or its Depositary Participants.

(h) No owner of any beneficial interest in any Global Debenture shall have any rights under this Indenture with respect to such Global Debenture, and the Depositary may be treated by the Company, the Trustee and any agent of the Company or the Trustee as the owner and holder of such Global Debenture for all purposes under the Indenture. None of the

16

Company, the Trustee nor any agent of the Company or the Trustee will have any responsibility or liability for any aspect of the records relating to or payments made on account of beneficial ownership interests in a Global Debenture or maintaining, supervising or reviewing any records relating to such beneficial ownership interests. 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 such beneficial owners, the operation of customary practices governing the exercise of the rights of the Depositary or its nominee as holder of any Debt Security.

(i) Global Debentures shall bear the following legend on the face thereof:

THIS SECURITY IS A GLOBAL DEBENTURE WITHIN THE MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF THE DEPOSITORY TRUST COMPANY (“DTC”) OR A NOMINEE OF DTC. THIS SECURITY IS EXCHANGEABLE FOR SECURITIES REGISTERED IN THE NAME OF A PERSON OTHER THAN DTC OR ITS NOMINEE ONLY IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE, AND NO TRANSFER OF THIS SECURITY (OTHER THAN A TRANSFER OF THIS SECURITY AS A WHOLE BY DTC TO A NOMINEE OF DTC OR BY A NOMINEE OF DTC TO DTC OR ANOTHER NOMINEE OF DTC) MAY BE REGISTERED EXCEPT IN LIMITED CIRCUMSTANCES.

UNLESS THIS SECURITY IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF DTC TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE, OR PAYMENT, AND ANY SECURITY ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

ARTICLE III

PARTICULAR COVENANTS OF THE COMPANY

Section 3.01 Payment of Principal, Premium and Interest; Agreed Treatment of the Debt Securities .

(a) The Company covenants and agrees that it will duly and punctually pay or cause to be paid all payments due in respect of the Debt Securities at the place, at the respective times and in the manner provided in this Indenture and the Debt Securities. Payment of the principal of and premium, if any, and interest on the Debt Securities due on the Maturity Date, any Optional Redemption Date or the Special Redemption Date, as the case may be, will be made by the Company in immediately available funds against presentation and surrender of such

17

Debt Securities. At the option of the Company, each installment of interest on the Debt Securities due on an Interest Payment Date other than the Maturity Date, any Optional Redemption Date or the Special Redemption Date, as the case may be, may be paid (i) by mailing checks for such interest payable to the order of the holders of Debt Securities entitled thereto as they appear on the Debt Security Register or (ii) by wire transfer of immediately available funds to any account with a banking institution located in the United States designated by such holders to the Paying Agent no later than the related record date. Notwithstanding anything to the contrary contained in this Indenture or any Debt Security, if the Trust or the trustee of the Trust is the holder of any Debt Security, then all payments in respect of such Debt Security shall be made by the Company in immediately available funds when due.

(b) The Company will treat the Debt Securities as indebtedness, and the interest payable in respect of such Debt Securities (including any Additional Amounts) as interest, for all U.S. federal income tax purposes. All payments in respect of such Debt Securities will be made free and clear of U.S. withholding tax provided, that (i) any beneficial owner thereof that is a “United States person” within the meaning of Section 7701(a)(30) of the Code (A) has provided an Internal Revenue Service Form W-9 (or any substitute or successor form) in the manner required establishing its status as a “United States person” for U.S. federal income tax purposes, and (B) the Internal Revenue Service has neither notified the Issuer that the taxpayer identification number furnished by such beneficial owner is incorrect nor notified the Issuer that there is underreporting by such beneficial owner, and (ii) any beneficial owner thereof that is not a “United States person” within the meaning of Section 7701(a)(30) of the Code has provided an Internal Revenue Service Form W-8 BEN, Internal Revenue Service Form W-8ECI, or Internal Revenue Service Form W-8EXP, as applicable (or any substitute or successor form) in the manner required establishing its non-U.S. status for U.S. federal income tax purposes.

(c) As of the date of this Indenture, the Company represents that it has no intention to exercise its right under Section 2.11 to defer payments of interest on the Debt Securities by commencing an Extension Period.

(d) As of the date of this Indenture, the Company represents that the likelihood that it would exercise its right under Section 2.11 to defer payments of interest on the Debt Securities by commencing an Extension Period at any time during which the Debt Securities are outstanding is remote because of the restrictions that would be imposed on the Company’s ability to declare or pay dividends or distributions on, or to redeem, purchase or make a liquidation payment with respect to, any of its outstanding equity and on the Company’s ability to make any payments of principal of or premium, if any, or interest on, or repurchase or redeem, any of its debt securities that rank pari passu in all respects with or junior in interest to the Debt Securities.

Section 3.02 Offices for Notices and Payments, etc .

So long as any of the Debt Securities remain outstanding, the Company will maintain in Wilmington, Delaware or in Spokane, Washington an office or agency where the Debt Securities may be presented for payment, an office or agency where the Debt Securities may be presented for registration of transfer and for exchange as provided in this Indenture and an office or agency where notices and demands to or upon the Company in respect of the Debt

18

Securities or of this Indenture may be served. The Company will give to the Trustee written notice of the location of any such office or agency and of any change of location thereof. Until otherwise designated from time to time by the Company in a notice to the Trustee, or specified as contemplated by Section 2.05, such office or agency for all of the above purposes shall be the Principal Office of the Trustee. In case the Company shall fail to maintain any such office or agency in Wilmington, Delaware or in Spokane, Washington, or shall fail to give such notice of the location or of any change in the location thereof, presentations and demands may be made and notices may be served at the Principal Office of the Trustee.

In addition to any such office or agency, the Company may from time to time designate one or more offices or agencies outside Wilmington, Delaware or Spokane, Washington where the Debt Securities may be presented for registration of transfer and for exchange in the manner provided in this Indenture, and the Company may from time to time rescind such designation, as the Company may deem desirable or expedient; provided , however , that no such designation or rescission shall in any manner relieve the Company of its obligation to maintain any such office or agency in Wilmington, Delaware or in Spokane, Washington for the purposes above mentioned. The Company will give to the Trustee prompt written notice of any such designation or rescission thereof.

Section 3.03 Appointments to Fill Vacancies in Trustee’s Office .

The Company, whenever necessary to avoid or fill a vacancy in the office of Trustee, will appoint, in the manner provided in Section 6.09, a Trustee, so that there shall at all times be a Trustee hereunder.

Section 3.04 Provision as to Paying Agent .

(a) If the Company shall appoint a Paying Agent other than the Trustee, it will cause such Paying Agent to execute and deliver to the Trustee an instrument in which such agent shall agree with the Trustee, subject to the provision of this Section 3.04,

(i) that it will hold all sums held by it as such agent for the payment of all payments due on the Debt Securities (whether such sums have been paid to it by the Company or by any other obligor on the Debt Securities) in trust for the benefit of the holders of the Debt Securities;

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

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

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

19

Whenever the Company shall have one or more Paying Agents for the Debt Securities, it will, on or prior to each due date of the payments on the Debt Securities, deposit with a Paying Agent a sum sufficient to pay all payments so becoming due, such sum to be held in trust for the benefit of the Persons entitled thereto and (unless such Paying Agent is the Trustee) the Company shall promptly notify the Trustee in writing of its action or failure to act.

(c) Anything in this Section 3.04 to the contrary notwithstanding, the Company may, at any time, for the purpose of obtaining a satisfaction and discharge with respect to the Debt Securities, or for any other reason, pay, or direct any Paying Agent to pay, to the Trustee all sums held in trust by the Company or any such Paying Agent, such sums to be held by the Trustee upon the same terms and conditions herein contained.

(d) Anything in this Section 3.04 to the contrary notwithstanding, the agreement to hold sums in trust as provided in this Section 3.04 is subject to Sections 12.03 and 12.04.

(e) The Company hereby initially appoints the Trustee to act as paying agent for the Debt Securities (the “Paying Agent”).

Section 3.05 Certificate to Trustee .

The Company will deliver to the Trustee on or before 120 days after the end of each fiscal year, so long as Debt Securities are outstanding hereunder, a Certificate, substantially in the form of Exhibit B attached hereto, stating that in the course of the performance by the signers of their duties as officers of the Company they would normally have knowledge of any default by the Company in the performance of any covenants of the Company contained herein, stating whether or not they have knowledge of any such default and, if so, specifying each such default of which the signers have knowledge and the nature thereof.

Section 3.06 Additional Amounts .

If and for so long as the Trust is the holder of all Debt Securities and is subject to or otherwise required to pay (or is required to withhold from distributions to holders of Trust Securities) any additional taxes (including withholding taxes), duties, assessments or other governmental charges as a result of a Tax Event, the Company will pay such additional amounts (the “Additional Amounts”) on the Debt Securities or the Trust Securities, as the case may be, as shall be required so that the net amounts received and retained by the holders of Debt Securities or Trust Securities, as the case may be, after payment of all taxes (including withholding taxes), duties, assessments or other governmental charges, will be equal to the amounts that such holders would have received and retained had no such taxes (including withholding taxes), duties, assessments or other governmental charges been imposed.

Whenever in this Indenture or the Debt Securities there is a reference in any context to the payment of principal of or premium, if any, or interest on the Debt Securities, such mention shall be deemed to include mention of payments of the Additional Amounts provided

20

for in this Section to the extent that, in such context, Additional Amounts are, were or would be payable in respect thereof pursuant to the provisions of this Section and express mention of the payment of Additional Amounts (if applicable) in any provisions hereof shall not be construed as excluding Additional Amounts in those provisions hereof where such express mention is not made, provided , however , that, notwithstanding anything to the contrary contained in this Indenture or any Debt Security, the deferral of the payment of interest during an Extension Period pursuant to Section 2.11 shall not defer the payment of any Additional Amounts that may be due and payable.

Section 3.07 Compliance with Consolidation Provisions .

The Company will not, while any of the Debt Securities remain outstanding, consolidate with, or merge into, any other Person, or merge into itself, or sell, convey, transfer or otherwise dispose of all or substantially all of its property or capital stock to any other Person unless the provisions of Article XI hereof are complied with.

Section 3.08 Limitation on Dividends .

If (i) there shall have occurred and be continuing a Default or an Event of Default, (ii) the Company shall be in default with respect to its payment of any obligations under the Capital Securities Guarantee or (iii) the Company shall have given notice of its election to defer payments of interest on the Debt Securities by extending the interest payment period as provided herein and such period, or any extension thereof, shall have commenced and be continuing, then the Company may not (A) declare or pay any dividends or distributions on, or redeem, purchase, acquire, or make a liquidation payment with respect to, any of the Company’s capital stock, (B) make any payment of principal of or premium, if any, or interest on or repay, repurchase or redeem any debt securities of the Company that rank pari passu in all respects with or junior in interest to the Debt Securities or (C) make any payment under any guarantees of the Company that rank pari passu in all respects with or junior in interest to the Capital Securities Guarantee (other than (a) repurchases, redemptions or other acquisitions of shares of capital stock of the Company (I) in connection with any employment contract, benefit plan or other similar arrangement with or for the benefit of one or more employees, officers, directors or consultants, (II) in connection with a dividend reinvestment or stockholder stock purchase plan or (III) in connection with the issuance of capital stock of the Company (or securities convertible into or exercisable for such capital stock) as consideration in an acquisition transaction entered into prior to the occurrence of (i), (ii) or (iii) above, (b) as a result of any exchange or conversion of any class or series of the Company’s capital stock (or any capital stock of a subsidiary of the Company) for any class or series of the Company’s capital stock or of any class or series of the Company’s indebtedness for any class or series of the Company’s capital stock, (c) the purchase of fractional interests in shares of the Company’s capital stock pursuant to the conversion or exchange provisions of such capital stock or the security being converted or exchanged, (d) any declaration of a dividend in connection with any stockholder’s rights plan, or the issuance of rights, stock or other property under any stockholder’s rights plan, or the redemption or repurchase of rights pursuant thereto or (e) any dividend in the form of stock, warrants, options or other rights where the dividend stock or the stock issuable upon exercise of such warrants, options or other rights is the same stock as that on which the dividend is being paid or ranks pari passu with or junior in interest to such stock).

21

Section 3.09 Covenants as to the Trust .

For so long as such Trust Securities remain outstanding, the Company shall maintain 100% ownership of the Common Securities; provided , however , that any permitted successor of the Company under this Indenture may succeed to the Company’s ownership of such Common Securities. The Company, as owner of the Common Securities, shall use commercially reasonable efforts to cause the Trust (a) to remain a statutory trust, except in connection with a distribution of Debt Securities to the holders of Trust Securities in liquidation of the Trust, the redemption of all of the Trust Securities or mergers, consolidations or amalgamations, each as permitted by the Declaration, (b) to otherwise continue to be classified as a grantor trust for United States federal income tax purposes and (c) to cause each holder of Trust Securities to be treated as owning an undivided beneficial interest in the Debt Securities.

ARTICLE IV

LISTS

Section 4.01 Securityholders’ Lists .

The Company covenants and agrees that it will furnish or cause to be furnished to the Trustee:

(a) on each regular record date for an Interest Payment Date, a list, in such form as the Trustee may reasonably require, of the names and addresses of the Securityholders of the Debt Securities as of such record date; and

(b) at such other times as the Trustee may request in writing, within 30 days after the receipt by the Company of any such request, a list of similar form and content as of a date not more than 15 days prior to the time such list is furnished; except that no such lists need be furnished under this Section 4.01 so long as the Trustee is in possession thereof by reason of its acting as Debt Security registrar.

Section 4.02 Preservation and Disclosure of Lists .

(a) The Trustee shall preserve, in as current a form as is reasonably practicable, all information as to the names and addresses of the holders of Debt Securities (1) contained in the most recent list furnished to it as provided in Section 4.01 or (2) received by it in the capacity of Debt Securities registrar (if so acting) hereunder. The Trustee may destroy any list furnished to it as provided in Section 4.01 upon receipt of a new list so furnished.

(b) [The rights of Holders to communicate with other Holders with respect to their rights under this Indenture or under the Debt Securities, and the corresponding rights and privileges of the Trustee, shall be as provided in the Trust Indenture Act.] OR [In case three or more holders of Debt Securities (hereinafter referred to as “applicants”) apply in writing to the Trustee and furnish to the Trustee reasonable proof that each such applicant has owned a Debt Security for a period of at least six months preceding the date of such application, and such application states that the applicants desire to communicate with other holders of Debt Securities with respect to their rights under this Indenture or under such Debt Securities and is accompanied by a copy of the form of proxy or other communication which such applicants propose to transmit, then the Trustee shall within five Business Days after the receipt of such application, at its election, either:

(i) afford such applicants access to the information preserved at the time by the Trustee in accordance with the provisions of subsection (a) of this Section 4.02, or

22

(ii) inform such applicants as to the approximate number of holders of Debt Securities whose names and addresses appear in the information preserved at the time by the Trustee in accordance with the provisions of subsection (a) of this Section 4.02, and as to the approximate cost of mailing to such Securityholders the form of proxy or other communication, if any, specified in such application.

If the Trustee shall elect not to afford such applicants access to such information, the Trustee shall, upon the written request of such applicants, mail to each Securityholder of Debt Securities whose name and address appear in the information preserved at the time by the Trustee in accordance with the provisions of subsection (a) of this Section 4.02 a copy of the form of proxy or other communication which is specified in such request with reasonable promptness after a tender to the Trustee of the material to be mailed and of payment, or provision for the payment, of the reasonable expenses of mailing, unless within five days after such tender, the Trustee shall mail to such applicants and file with the Securities and Exchange Commission, if permi