<PAGE>

                                                                     EXHIBIT 4.2

                     SOUTHWEST BANCORPORATION OF TEXAS, INC.
                                    as Issuer

                                    INDENTURE
                         Dated as of September 24, 2004

                     WELLS FARGO BANK, NATIONAL ASSOCIATION
                                   As Trustee

                       JUNIOR SUBORDINATED DEBT SECURITIES

                               Due October 7, 2034

<PAGE>

                               TABLE OF CONTENTS

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                                              ARTICLE I
                                             DEFINITIONS
<S>                                                                                               <C>
SECTION 1.01.   Definitions....................................................................     1

   Acceleration Event..........................................................................     1

   Additional Interest.........................................................................     1

   Additional Provisions.......................................................................     1

   Applicable Depository Procedures............................................................     1

   Authenticating Agent........................................................................     1

   Bankruptcy Law..............................................................................     2

   Board of Directors..........................................................................     2

   Board Resolution............................................................................     2

   Business Day................................................................................     2

   Calculation Agent...........................................................................     2

   Capital Securities..........................................................................     2

   Capital Securities Guarantee................................................................     2

   Capital Treatment Event.....................................................................     2

   Certificate.................................................................................     3

   Common Securities...........................................................................     3

   Company ....................................................................................     3

   Debt Security...............................................................................     3

   Debt Security Register......................................................................     3

   Declaration.................................................................................     3

   Default ....................................................................................     3

   Defaulted Interest..........................................................................     3

   Deferred Interest...........................................................................     3

   Depositary..................................................................................     3

   Depositary Participant......................................................................     3

   DTC  .......................................................................................     3

   Event of Default............................................................................     3

   Extension Period............................................................................     3

   Federal Reserve.............................................................................     4
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                                  (CONTINUED)

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<S>                                                                                            <C>
Global Debenture............................................................................     4

Indenture...................................................................................     4

Initial Purchaser...........................................................................     4

Institutional Trustee.......................................................................     4

Interest Payment Date.......................................................................     4

Interest Payment Period.....................................................................     4

Interest Rate...............................................................................     4

Investment Company Event....................................................................     4

LIBOR ......................................................................................     4

LIBOR Banking Day...........................................................................     4

LIBOR Business Day..........................................................................     4

LIBOR Determination Date....................................................................     4

Liquidation Amount..........................................................................     5

Maturity Date...............................................................................     5

Notice .....................................................................................     5

Officers' Certificate.......................................................................     5

Opinion of Counsel..........................................................................     5

OTS   ......................................................................................     5

Outstanding.................................................................................     5

Paying Agent................................................................................     5

Person .....................................................................................     5

Predecessor Security........................................................................     6

Principal Office of the Trustee.............................................................     6

Redemption Date.............................................................................     6

Redemption Price............................................................................     6

Responsible Officer.........................................................................     6

Securityholder..............................................................................     6

Senior Indebtedness.........................................................................     6

Special Event...............................................................................     7

Special Redemption Date.....................................................................     7

Special Redemption Price....................................................................     7
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   Subsidiary..................................................................................     7

   Tax Event...................................................................................     7

   Trust    ...................................................................................     8

   Trust Indenture Act.........................................................................     8

   Trust Securities............................................................................     8

   Trustee  ...................................................................................     8

   United States...............................................................................     8

   U.S. Person.................................................................................     8

                                              ARTICLE II
                                           DEBT SECURITIES

SECTION 2.01.      Authentication and Dating...................................................     8

SECTION 2.02.      Form of Trustee's Certificate of Authentication.............................     9

SECTION 2.03.      Form and Denomination of Debt Securities....................................     9

SECTION 2.04.      Execution of Debt Securities................................................     9

SECTION 2.05.      Exchange and Registration of Transfer of Debt Securities....................    10

SECTION 2.06.      Mutilated, Destroyed, Lost or Stolen Debt Securities........................    12

SECTION 2.07.      Temporary Debt Securities...................................................    13

SECTION 2.08.      Payment of Interest.........................................................    14

SECTION 2.09.      Cancellation of Debt Securities Paid, etc...................................    15

SECTION 2.10.      Computation of Interest.....................................................    15

SECTION 2.11.      Extension of Interest Payment Period........................................    17

SECTION 2.12.      CUSIP Numbers...............................................................    18

SECTION 2.13.      Global Debentures...........................................................    18

                                             ARTICLE III
                                 PARTICULAR COVENANTS OF THE COMPANY

SECTION 3.01.      Payment of Principal, Premium and Interest; Agreed Treatment of the
                   Debt Securities.............................................................    20

SECTION 3.02.      Offices for Notices and Payments, etc.......................................    21

SECTION 3.03.      Appointments to Fill Vacancies in Trustee's Office..........................    21

SECTION 3.04.      Provision as to Paying Agent................................................    21

SECTION 3.05.      Certificate to Trustee......................................................    22

SECTION 3.06.      Additional Interest.........................................................    22
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SECTION 3.07.      Compliance with Consolidation Provisions....................................    23

SECTION 3.08.      Limitation on Dividends.....................................................    23

SECTION 3.09.      Covenants as to the Trust...................................................    24

                                              ARTICLE IV
                           LISTS AND REPORTS BY THE COMPANY AND THE TRUSTEE

SECTION 4.01.      Securityholders' Lists......................................................    24

SECTION 4.02.      Preservation and Disclosure of Lists........................................    25

                                              ARTICLE V
                 REMEDIES OF THE TRUSTEE AND SECURITYHOLDERS UPON AN EVENT OF DEFAULT

SECTION 5.01.      Events of Default...........................................................    26

SECTION 5.02.      Payment of Debt Securities on Default; Suit Therefor........................    28

SECTION 5.03.      Application of Moneys Collected by Trustee..................................    29

SECTION 5.04.      Proceedings by Securityholders..............................................    30

SECTION 5.05.      Proceedings by Trustee......................................................    30

SECTION 5.06.      Remedies Cumulative and Continuing..........................................    30

SECTION 5.07.      Direction of Proceedings and Waiver of Defaults by Majority of
                   Securityholders.............................................................    31

SECTION 5.08.      Notice of Defaults..........................................................    31

SECTION 5.09.      Undertaking to Pay Costs....................................................    32

                                              ARTICLE VI
                                        CONCERNING THE TRUSTEE

SECTION 6.01.      Duties and Responsibilities of Trustee......................................    32

SECTION 6.02.      Reliance on Documents, Opinions, etc........................................    34

SECTION 6.03.      No Responsibility for Recitals, etc.........................................    35

SECTION 6.04.      Trustee, Authenticating Agent, Paying Agents, Transfer Agents or
                   Registrar May Own Debt Securities...........................................    35

SECTION 6.05.      Moneys to be Held in Trust..................................................    35

SECTION 6.06.      Compensation and Expenses of Trustee........................................    35

SECTION 6.07.      Officers' Certificate as Evidence...........................................    36

SECTION 6.08.      Eligibility of Trustee......................................................    36

SECTION 6.09.      Resignation or Removal of Trustee, Calculation Agent, Paying Agent or
                   Debt Security Registrar.....................................................    37
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SECTION 6.10.      Acceptance by Successor.....................................................    38

SECTION 6.11.      Succession by Merger, etc...................................................    39

SECTION 6.12.      Authenticating Agents.......................................................    39

                                             ARTICLE VII
                                    CONCERNING THE SECURITYHOLDERS

SECTION 7.01.      Action by Securityholders...................................................    41

SECTION 7.02.      Proof of Execution by Securityholders.......................................    41

SECTION 7.03.      Who Are Deemed Absolute Owners..............................................    42

SECTION 7.04.      Debt Securities Owned by Company Deemed Not Outstanding.....................    42

SECTION 7.05.      Revocation of Consents; Future Holders Bound................................    42

                                             ARTICLE VIII
                                      SECURITYHOLDERS' MEETINGS

SECTION 8.01.      Purposes of Meetings........................................................    43

SECTION 8.02.      Call of Meetings by Trustee.................................................    43

SECTION 8.03.      Call of Meetings by Company or Securityholders..............................    43

SECTION 8.04.      Qualifications for Voting...................................................    44

SECTION 8.05.      Regulations.................................................................    44

SECTION 8.06.      Voting......................................................................    44

SECTION 8.07.      Quorum; Actions.............................................................    45

SECTION 8.08.      Written Consent Without a Meeting...........................................    46

                                             ARTICLE IX
                                       SUPPLEMENTAL INDENTURES

SECTION 9.01.      Supplemental Indentures without Consent of Securityholders..................    46

SECTION 9.02.      Supplemental Indentures with Consent of Securityholders.....................    47

SECTION 9.03.      Effect of Supplemental Indentures...........................................    48

SECTION 9.04.      Notation on Debt Securities.................................................    49

SECTION 9.05.      Evidence of Compliance of Supplemental Indenture to be Furnished to
                   Trustee.....................................................................    49

                                              ARTICLE X
                                       REDEMPTION OF SECURITIES

SECTION 10.01.     Optional Redemption.........................................................    49

SECTION 10.02.     Special Event Redemption....................................................    49

SECTION 10.03.     Notice of Redemption; Selection of Debt Securities..........................    49
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SECTION 10.04.     Payment of Debt Securities Called for Redemption............................    50

                                             ARTICLE XI
                          CONSOLIDATION, MERGER, SALE, CONVEYANCE AND LEASE

SECTION 11.01.     Company May Consolidate, etc., on Certain Terms.............................    51

SECTION 11.02.     Successor Entity to be Substituted..........................................    52

SECTION 11.03.     Opinion of Counsel to be Given to Trustee...................................    52

                                             ARTICLE XII
                               SATISFACTION AND DISCHARGE OF INDENTURE

SECTION 12.01.     Discharge of Indenture......................................................    52

SECTION 12.02.     Deposited Moneys to be Held in Trust by Trustee.............................    53

SECTION 12.03.     Paying Agent to Repay Moneys Held...........................................    53

SECTION 12.04.     Return of Unclaimed Moneys..................................................    53

                                             ARTICLE XIII
                   IMMUNITY OF INCORPORATORS, STOCKHOLDERS, OFFICERS AND DIRECTORS

SECTION 13.01.     Indenture and Debt Securities Solely Corporate Obligations..................    54

                                             ARTICLE XIV
                                       MISCELLANEOUS PROVISIONS

SECTION 14.01.     Successors..................................................................    54

SECTION 14.02.     Official Acts by Successor Entity...........................................    54

SECTION 14.03.     Surrender of Company Powers.................................................    54

SECTION 14.04.     Addresses for Notices, etc..................................................    55

SECTION 14.05.     Governing Law...............................................................    55

SECTION 14.06.     Evidence of Compliance with Conditions Precedent............................    55

SECTION 14.07.     Non-Business Days...........................................................    56

SECTION 14.08.     Table of Contents, Headings, etc............................................    56

SECTION 14.09.     Execution in Counterparts...................................................    56

SECTION 14.10.     Separability................................................................    56

SECTION 14.11.     Assignment..................................................................    56

SECTION 14.12.     Acknowledgment of Rights....................................................    57

                                             ARTICLE XV
                                   SUBORDINATION OF DEBT SECURITIES

SECTION 15.01.     Agreement to Subordinate....................................................    57

SECTION 15.02.     Default on Senior Indebtedness..............................................    57
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SECTION 15.03.     Liquidation; Dissolution; Bankruptcy........................................    58

SECTION 15.04.     Subrogation.................................................................    59

SECTION 15.05.     Trustee to Effectuate Subordination.........................................    60

SECTION 15.06.     Notice by the Company.......................................................    60

SECTION 15.07.     Rights of the Trustee, Holders of Senior Indebtedness.......................    61

SECTION 15.08.     Subordination May Not Be Impaired...........................................    61

EXHIBITS

EXHIBIT A          FORM OF DEBT SECURITY
</TABLE>

                                      -vii-
<PAGE>

            THIS INDENTURE, dated as of September 24, 2004, between Southwest
Bancorporation of Texas, Inc., a bank holding company incorporated in Texas
(hereinafter sometimes called the "Company"), and Wells Fargo Bank, National
Association, a national banking association with its principal place of business
in the State of Delaware, as trustee (hereinafter sometimes called the
"Trustee").

                              W I T N E S S E T H:

            WHEREAS, for its lawful corporate purposes, the Company has duly
authorized the issuance of its Junior Subordinated Debt Securities due October
7, 2034 (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.

            "Acceleration Event" shall have the meaning set forth in Section
5.01.

            "Additional Interest" shall have the meaning set forth in Section
3.06.

            "Additional Provisions" shall have the meaning set forth in Section
15.01.

            "Applicable Depository Procedures" means, with respect to any
transfer or transaction involving a Global Debenture or beneficial interest
therein, the rules and procedures of the Depositary for such 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.

<PAGE>

            "Bankruptcy Law" means Title 11, U.S. Code, or any similar federal
or state law for the relief of debtors.

            "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.

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

            "Calculation Agent" means the Person identified as "Trustee" in the
first paragraph hereof with respect to the Debt Securities and the Institutional
Trustee with respect to the Trust Securities.

            "Capital Securities" means undivided beneficial interests in the
assets of the Trust which are designated as "TP Securities" and rank pari passu
with Common Securities issued by the Trust; provided, however, that if an Event
of Default 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 Wells Fargo Bank, National Association 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 any amendment to, or change in, the laws, rules or regulations of
the United States or any political subdivision thereof or therein, or as the
result of 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, within 90 days of the receipt of such opinion,
the aggregate Liquidation Amount of the Capital Securities will not be eligible
to be treated by the Company as "Tier 1 Capital" (or the then equivalent
thereof) for purposes of the capital adequacy guidelines of the Federal Reserve
or OTS, as applicable (or any successor regulatory authority with jurisdiction
over bank, savings & loan or financial holding companies), 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 Liquidation Amount of the Capital Securities
as Tier 1 Capital shall not constitute the basis for a Capital Treatment Event,
if such inability results from the Company having cumulative preferred stock,
minority interests in consolidated subsidiaries, or any other class of security
or interest which the Federal Reserve or OTS, as applicable, may now or
hereafter accord Tier 1 Capital treatment in excess of the amount which may now
or hereafter qualify for treatment as Tier 1 Capital under applicable

                                       -2-
<PAGE>

capital adequacy guidelines; provided further, however, 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.

            "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.

            "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 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 Southwest Bancorporation of Texas, Inc., a bank
holding company incorporated in Texas, 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 September 24, 2004, 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.

            "Depositary" means an organization registered as a clearing agency
under the Securities Exchange Act of 1934 that is designated as Depositary by
the Company or any successor thereto. 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 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.

                                       -3-
<PAGE>

            "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 security that evidences all or part of
the Debt Securities, the ownership and transfers of which shall be made through
book entries by a Depositary.

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

            "Initial Purchaser" means the initial purchaser of the Capital
Securities.

            "Institutional Trustee" has the meaning set forth in the
Declaration.

            "Interest Payment Date" means January 7, April 7, July 7 and October
7 of each year, commencing on January 7, 2005, during the term of this
Indenture.

            "Interest Payment Period" means the period from and including an
Interest Payment Date, or in the case of the first Interest Payment Period, the
original date of issuance of the Debt Securities, to, but excluding, the next
succeeding Interest Payment Date or, in the case of the last Interest Payment
Period, the Redemption Date, Special Redemption Date or Maturity Date, as the
case may be.

            "Interest Rate" means a per annum rate of interest, reset quarterly,
equal to LIBOR, as determined on the LIBOR Determination Date immediately
preceding each Interest Payment Date, plus 1.90%; provided, however, that the
Interest Rate for any Interest Payment Period may not exceed the highest rate
permitted by New York law, as the same may be modified by United States law of
general application.

            "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 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 or would become effective, as the case may be, on or after the date of
the original issuance of the Debt Securities.

            "LIBOR" means the London Interbank Offered Rate for U.S. Dollar
deposits in Europe as determined by the Calculation Agent according to Section
2.10(b).

            "LIBOR Banking Day" has the meaning set forth in Section 2.10(b)(1).

            "LIBOR Business Day" has the meaning set forth in Section
2.10(b)(1).

            "LIBOR Determination Date" has the meaning set forth in Section
2.10(b).

                                       -4-
<PAGE>

            "Liquidation Amount" means the liquidation amount of $1,000 per
Trust Security.

            "Maturity Date" means October 7, 2034.

            "Notice" has the meaning set forth in Section 2.11.

            "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.

            "OTS" means the Office of Thrift Supervision and any successor
federal agency that is primarily responsible for regulating the activities of
savings and loan holding companies.

            "Outstanding" means 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.

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

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

                                      -5-
<PAGE>

            "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 919 Market
Street, Suite 700, Wilmington, DE 19801.

            "Redemption Date" has the meaning set forth in Section 10.01.

            "Redemption Price" means 100% of the principal amount of the Debt
Securities being redeemed plus accrued and unpaid interest on such Debt
Securities to the Redemption Date or, in the case of a redemption due to the
occurrence of a Special Event to the Special Redemption Date if such Special
Redemption Date is on or after October 7, 2009.

            "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.

            "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 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
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, 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 incurred on or prior to the date of this Indenture or thereafter
incurred, unless (1) with the prior

                                      -6-
<PAGE>

approval of the Federal Reserve or OTS, as applicable, if not otherwise
generally approved, in the instrument creating or evidencing the same or
pursuant to which the same is outstanding, it is provided that such obligations
are not superior or are pari passu in right of payment to the Debt Securities;
or (2) the Federal Reserve or OTS, as applicable, shall hereafter classify or
otherwise recognize any such obligation as pari passu or subordinate to the Debt
Securities. Notwithstanding anything to the contrary contained herein, Senior
Indebtedness shall not include (v) the Debt Securities issued under this
Indenture or the guarantee, of even date herewith, by the Company with respect
to the Capital Securities of SWBT Statutory Trust II; (w) the Company's Floating
Rate Junior Subordinated Deferrable Interest Debentures, dated October 7, 2003
issued to SWBT Statutory Trust I pursuant to that certain Indenture by and
between the Company and U.S. Bank National Association, as Trustee, and (x) the
related guarantee of the Company with respect to the securities of SWBT
Statutory Trust I, issued pursuant to that certain Guarantee Agreement, dated as
of October 7, 2003, by and between the Company and U.S. Bank National
Association, as Trustee.

            "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 (1) if the Special Redemption Date
is before October 7, 2009, One Hundred Percent (100%) of the principal amount of
the Debt Securities to be redeemed plus any accrued and unpaid interest thereon
to the date of such redemption or (2) if the Special Redemption Date is on or
after October 7, 2009, the Redemption Price for such 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 by 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 by 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.

            "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

                                      -7-
<PAGE>

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 SWBT Statutory Trust II, 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
SWBT Statutory Trust II.

            "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 Internal Revenue Code of 1986, as amended.

                                   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 $36,083,000 may be 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

                                      -8-
<PAGE>

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 is one of the Debt Securities referred to in the
within-mentioned Indenture.

            WELLS FARGO BANK, NATIONAL ASSOCIATION, not in its individual
capacity but solely as trustee

                        By _____________________________________
                                   Authorized Officer

      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, certificated 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.

      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, 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 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.

                                      -9-
<PAGE>

            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 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.

                                      -10-
<PAGE>

            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.

            Notwithstanding the foregoing, Debt Securities may not be
transferred except in compliance with the restricted securities legend set forth
below, unless otherwise determined by the Company in accordance with applicable
law, which legend shall be placed on each Debt Security:

            THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF
1933, AS AMENDED (THE "SECURITIES ACT"), OR ANY STATE SECURITIES LAWS OR ANY
OTHER APPLICABLE SECURITIES LAWS. NEITHER THIS SECURITY NOR ANY INTEREST OR
PARTICIPATION HEREIN MAY BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED,
ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR
UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, THE REGISTRATION
REQUIREMENTS OF THE SECURITIES ACT. THE HOLDER OF THIS SECURITY BY ITS
ACCEPTANCE HEREOF AGREES TO OFFER, SELL OR OTHERWISE TRANSFER SUCH SECURITY ONLY
(A) TO THE COMPANY, (B) PURSUANT TO RULE 144A UNDER THE SECURITIES ACT ("RULE
144A"), TO A PERSON THE HOLDER REASONABLY BELIEVES IS A "QUALIFIED INSTITUTIONAL
BUYER" AS DEFINED IN RULE 144A THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR THE
ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER TO WHOM NOTICE IS GIVEN THAT THE
TRANSFER IS BEING MADE IN RELIANCE ON RULE 144A, (C) PURSUANT TO AN EXEMPTION
FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT TO AN "ACCREDITED
INVESTOR" WITHIN THE MEANING OF SUBPARAGRAPH (a) (1), (2), (3) OR (7) OF RULE
501 UNDER THE SECURITIES ACT THAT IS ACQUIRING THE SECURITY FOR ITS OWN ACCOUNT,
OR FOR THE ACCOUNT OF AN "ACCREDITED INVESTOR," FOR INVESTMENT PURPOSES AND NOT
WITH A VIEW TO, OR FOR OFFER OR SALE IN CONNECTION WITH, ANY DISTRIBUTION IN
VIOLATION OF THE SECURITIES ACT, OR (D) PURSUANT TO ANOTHER AVAILABLE EXEMPTION
FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, SUBJECT TO THE
COMPANY'S RIGHT PRIOR TO ANY SUCH OFFER, SALE OR TRANSFER PURSUANT TO CLAUSES
(C) OR (D) TO REQUIRE THE DELIVERY OF AN OPINION OF COUNSEL, CERTIFICATION
AND/OR OTHER INFORMATION SATISFACTORY TO IT IN ACCORDANCE WITH THE INDENTURE, A
COPY OF WHICH MAY BE OBTAINED FROM THE COMPANY. THE HOLDER OF THIS SECURITY BY
ITS ACCEPTANCE HEREOF AGREES THAT IT WILL COMPLY WITH THE FOREGOING
RESTRICTIONS.

            THE HOLDER OF THIS SECURITY BY ITS ACCEPTANCE HEREOF AGREES,
REPRESENTS AND WARRANTS THAT IT WILL NOT ENGAGE IN HEDGING TRANSACTIONS
INVOLVING THIS SECURITY UNLESS SUCH TRANSACTIONS ARE IN COMPLIANCE WITH THE
SECURITIES ACT.

            THE HOLDER OF THIS SECURITY BY ITS ACCEPTANCE HEREOF ALSO AGREES,
REPRESENTS AND WARRANTS THAT IT IS NOT AN EMPLOYEE BENEFIT,

                                      -11-
<PAGE>

INDIVIDUAL RETIREMENT ACCOUNT OR OTHER PLAN OR ARRANGEMENT SUBJECT TO TITLE I OF
THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED ("ERISA"), OR
SECTION 4975 OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE "CODE"),
(EACH A "PLAN"), OR AN ENTITY WHOSE UNDERLYING ASSETS INCLUDE "PLAN ASSETS" BY
REASON OF ANY PLAN'S INVESTMENT IN THE ENTITY AND NO PERSON INVESTING "PLAN
ASSETS" OF ANY PLAN MAY ACQUIRE OR HOLD THIS SECURITY OR ANY INTEREST THEREIN,
UNLESS SUCH PURCHASER OR HOLDER IS ELIGIBLE FOR THE EXEMPTIVE RELIEF AVAILABLE
UNDER U.S. DEPARTMENT OF LABOR PROHIBITED TRANSACTION CLASS EXEMPTION
96-23,95-60,91-38,90-1 OR 84-14 OR ANOTHER APPLICABLE EXEMPTION OR ITS PURCHASE
AND HOLDING OF THIS SECURITY IS NOT PROHIBITED BY SECTION 406 OF ERISA OR
SECTION 4975 OF THE CODE WITH RESPECT TO SUCH PURCHASE OR HOLDING. ANY PURCHASER
OR HOLDER OF THIS SECURITY OR ANY INTEREST THEREIN WILL BE DEEMED TO HAVE
REPRESENTED BY ITS PURCHASE AND HOLDING THEREOF THAT EITHER (i) IT IS NOT AN
EMPLOYEE BENEFIT PLAN WITHIN THE MEANING OF SECTION 3(3) OF ERISA, OR A PLAN TO
WHICH SECTION 4975 OF THE CODE IS APPLICABLE, A TRUSTEE OR OTHER PERSON ACTING
ON BEHALF OF AN EMPLOYEE BENEFIT PLAN OR PLAN, OR ANY OTHER PERSON OR ENTITY
USING THE ASSETS OF ANY EMPLOYEE BENEFIT PLAN OR PLAN TO FINANCE SUCH PURCHASE,
OR (ii) SUCH PURCHASE WILL NOT RESULT IN A PROHIBITED TRANSACTION UNDER SECTION
406 OF ERISA OR SECTION 4975 OF THE CODE FOR WHICH THERE IS NO APPLICABLE
STATUTORY OR ADMINISTRATIVE EXEMPTION.

            IN CONNECTION WITH ANY TRANSFER, THE HOLDER OF THIS SECURITY WILL
DELIVER TO THE COMPANY AND TRUSTEE SUCH CERTIFICATES AND OTHER INFORMATION AS
MAY BE REQUIRED BY THE INDENTURE TO CONFIRM THAT THE TRANSFER COMPLIES WITH THE
FOREGOING RESTRICTIONS.

            THIS SECURITY WILL BE ISSUED AND MAY BE TRANSFERRED ONLY IN BLOCKS
HAVING A PRINCIPAL AMOUNT OF NOT LESS THAN $100,000 AND MULTIPLES OF $1,000 IN
EXCESS THEREOF. ANY ATTEMPTED TRANSFER OF THIS SECURITY IN A BLOCK HAVING A
PRINCIPAL AMOUNT OF LESS THAN $100,000 SHALL BE DEEMED TO BE VOID AND OF NO
LEGAL EFFECT WHATSOEVER. ANY SUCH PURPORTED TRANSFEREE SHALL BE DEEMED NOT TO BE
THE HOLDER OF THIS SECURITY FOR ANY PURPOSE, INCLUDING, BUT NOT LIMITED TO, THE
RECEIPT OF DISTRIBUTIONS ON THIS SECURITY, AND SUCH PURPORTED TRANSFEREE SHALL
BE DEEMED TO HAVE NO INTEREST WHATSOEVER IN THIS SECURITY.

            THIS OBLIGATION IS NOT A DEPOSIT AND IS NOT INSURED BY THE UNITED
STATES OR ANY AGENCY OR FUND OF THE UNITED STATES, INCLUDING THE FEDERAL DEPOSIT
INSURANCE CORPORATION (THE "FDIC"). THIS OBLIGATION IS SUBORDINATED TO THE
CLAIMS OF DEPOSITORS AND THE CLAIMS OF GENERAL AND SECURED CREDITORS OF THE
COMPANY, IS INELIGIBLE AS COLLATERAL FOR A LOAN BY THE COMPANY OR ANY OF ITS
SUBSIDIARIES AND IS NOT SECURED.

                                      -12-
<PAGE>

      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.

            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 or lithographed. Temporary
Debt Securities shall be issuable in any authorized denomination, and
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

                                      -13-
<PAGE>

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 then applicable
Interest Rate from and including each Interest Payment Date or, in the case of
the first Interest Payment Period, the original date of issuance of such Debt
Security to, but excluding, the next succeeding Interest Payment Date or, in the
case of the last Interest Payment Period, the Redemption Date, Special
Redemption Date or Maturity Date, as applicable, 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 commencing on January 7,
2005. 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 said 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, the Redemption Date or the
Special Redemption Date, as the case may be, shall be paid to the Person to whom
principal is paid. In (i) case the Maturity Date of any Debt Security or (ii)
the event that any Debt Security or portion thereof is called for redemption and
the redemption date is subsequent to a regular record date with respect to any
Interest Payment Date and either on or 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 registered 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

                                      -14-
<PAGE>

money when deposited to be held in trust for the benefit of the Persons entitled
to such Defaulted Interest as in this clause provided. 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.

            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 date 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.

      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. Computation of Interest.

            (a) The amount of interest payable for any Interest Payment Period
will be computed on the basis of a 360-day year and the actual number of days
elapsed in the relevant interest period; provided, however, that upon the
occurrence of a Special Event Redemption

                                      -15-
<PAGE>

pursuant to Section 10.02 the amounts payable pursuant to this Indenture shall
be calculated as set forth in the definition of Special Redemption Price.

            (b) LIBOR, for any Interest Payment Period, shall be determined by
the Calculation Agent in accordance with the following provisions:

                  (1) On the second LIBOR Business Day (provided, that on such
            day commercial banks are open for business (including dealings in
            foreign currency deposits) in London (a "LIBOR Banking Day"), and
            otherwise the next preceding LIBOR Business Day that is also a LIBOR
            Banking Day) prior to the January 15, April 15, July 15 and October
            15 immediately succeeding the commencement of such Interest Payment
            Period (or, with respect to the first Interest Payment Period, on
            September 22, 2004) (each such day, a "LIBOR Determination Date" for
            such Interest Payment Period), the Calculation Agent shall obtain
            the rate for three-month U.S. Dollar deposits in Europe, which
            appears on Telerate Page 3750 (as defined in the International Swaps
            and Derivatives Association, Inc. 2000 Interest Rate and Currency
            Exchange Definitions) or such other page as may replace such
            Telerate Page 3750 on the Moneyline Telerate, Inc. service (or such
            other service or services as may be nominated by the British
            Banker's Association as the information vendor for the purpose of
            displaying London interbank offered rates for U.S. dollar deposits),
            as of 11:00 a.m. (London time) on such LIBOR Determination Date, and
            the rate so obtained shall be LIBOR for such Interest Payment
            Period. "LIBOR Business Day" means any day that is not a Saturday,
            Sunday or other day on which commercial banking institutions in The
            City of New York or Wilmington, Delaware are authorized or obligated
            by law or executive order to be closed. If such rate is superseded
            on Telerate Page 3750 by a corrected rate before 12:00 noon (London
            time) on the same LIBOR Determination Date, the corrected rate as so
            substituted will be LIBOR for that Interest Payment Period.

                  (2) If, on any LIBOR Determination Date, such rate does not
            appear on Telerate Page 3750 or such other page as may replace such
            Telerate Page 3750 on the Moneyline Telerate, Inc. service (or such
            other service or services as may be nominated by the British
            Banker's Association as the information vendor for the purpose of
            displaying London interbank offered rates for U.S. dollar deposits),
            the Calculation Agent shall determine the arithmetic mean of the
            offered quotations of the Reference Banks (as defined below) to
            leading banks in the London Interbank market for three-month U.S.
            Dollar deposits in Europe (in an amount determined by the
            Calculation Agent) by reference to requests for quotations as of
            approximately 11:00 a.m. (London time) on the LIBOR Determination
            Date made by the Calculation Agent to the Reference Banks. If, on
            any LIBOR Determination Date, at least two of the Reference Banks
            provide such quotations, LIBOR shall equal the arithmetic mean of
            such quotations. If, on any LIBOR Determination Date, only one or
            none of the Reference Banks provide such a quotation, LIBOR shall be
            deemed to be the arithmetic mean of the offered quotations that at
            least two leading banks in the City of New York (as selected by the
            Calculation Agent) are quoting on the relevant LIBOR Determination
            Date for

                                      -16-
<PAGE>

            three-month U.S. Dollar deposits in Europe at approximately 11:00
            a.m. (London time) (in an amount determined by the Calculation
            Agent). As used herein, "Reference Banks" means four major banks in
            the London Interbank market selected by the Calculation Agent.

                  (3) If the Calculation Agent is required but is unable to
            determine a rate in accordance with at least one of the procedures
            provided above, LIBOR for the applicable Interest Payment Period
            shall be LIBOR in effect for the immediately preceding Interest
            Payment Period.

            (c) All percentages resulting from any calculations on the Debt
Securities will be rounded, if necessary, to the nearest one hundred-thousandth
of a percentage point, with five one-millionths of a percentage point rounded
upward (e.g., 9.876545% (or .09876545) being rounded to 9.87655% (or .0987655)),
and all dollar amounts used in or resulting from such calculation will be
rounded to the nearest cent (with one-half cent being rounded upward).

            (d) On each LIBOR Determination Date, the Calculation Agent shall
notify, in writing, the Company and the Paying Agent of the applicable Interest
Rate in effect for the related Interest Payment Period. The Calculation Agent
shall, upon the request of the holder of any Debt Securities, provide the
Interest Rate then in effect. All calculations made by the Calculation Agent in
the absence of manifest error shall be conclusive for all purposes and binding
on the Company and the Holders of the Debt Securities. The Paying Agent shall be
entitled to rely on information received from the Calculation Agent or the
Company as to the Interest Rate. The Company shall, from time to time, provide
any necessary information to the Paying Agent relating to any original issue
discount and interest on the Debt Securities that is included in any payment and
reportable for taxable income calculation purposes.

      SECTION 2.11. Extension of Interest Payment Period.

            So long as no Event of Default 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 distribution period on the Debt Securities at any time and from time to
time during the term of the Debt Securities, for up to twenty consecutive
quarterly periods (each such extended interest distribution period, an
"Extension Period"), during which Extension Period no interest shall be due and
payable (except any Additional Interest that may be due and payable). No
Extension Period may end on a date other than an Interest Payment Date or extend
beyond the Maturity Date, any Redemption Date or any 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 applicable during such
Extension Period, compounded quarterly from the date such Deferred Interest
would have been payable were it not for the Extension Period, to the extent
permitted by law. No interest or Deferred Interest shall be due and payable
during an Extension Period, except at the end thereof. At the end of any such
Extension Period the Company shall pay all Deferred Interest then accrued and
unpaid on the Debt Securities; provided, however, that no Extension Period may
extend beyond the Maturity Date; and provided further, however, that during any
such Extension Period, the Company shall be subject

                                      -17-
<PAGE>

to the restrictions set forth in Section 3.08 of this Indenture. Prior to the
termination of any Extension Period, the Company may further extend such period,
provided, that such period together with all such previous and further
consecutive extensions thereof shall not exceed twenty consecutive quarterly
periods, or extend beyond the Maturity Date. 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 such Extension
Period ("Notice") at least five Business Days prior to the next succeeding
Interest Payment Date on which interest on the Debt Securities would have been
payable except for the election to begin such Extension Period. The Notice shall
describe, in reasonable detail, why the Company has elected to begin an
Extension Period. The Notice shall acknowledge and affirm the Company's
understanding that it is prohibited from issuing dividends and other
distributions during the Extension Period. Upon receipt of the Notice, an
Initial Purchaser shall have the right, at its sole discretion, to disclose the
name of the Company, the fact that the Company has elected to begin an Extension
Period and other information that such Initial Purchaser, at its sole
discretion, deems relevant to the Company's election to begin an Extension
Period. The Trustee shall give notice of the Company's election to begin a new
Extension Period to the Securityholders.

      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 the holder of Outstanding Debt Securities,
which election need not be in writing, the Debt Securities owned by such holder
shall be issued in the form of one or more Global Debentures registered in the
name of the Depositary or its nominee. 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 thereof 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

                                      -18-
<PAGE>

Exchange Act and no successor is appointed by the Company within ninety (90)
days after obtaining knowledge of such event, (iii) the Company executes and
delivers to the Trustee a Company Order stating that the Company elects to
terminate the book-entry system through the Depositary or (iv) an Event of
Default shall have occurred and be continuing. Upon the occurrence of any event
specified in clause (i), (ii), (iii) or (iv) 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 owners of beneficial interests
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 of the beneficial interests therein, the Trustee shall recognize
such holders of beneficial interests as Holders.

            (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 in this Article II or (ii) the principal amount thereof
shall be reduced or increased by an amount equal to the portion thereof to be so
exchanged or canceled, or equal to the principal amount of such other 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
Depository 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 any Debt Securities issuable in exchange for such
Global Debenture (or any portion thereof) in accordance with the instructions of
the Depositary. The Trustee shall not be liable for any delay in delivery of
such instructions and 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 Trust Agreement) upon the dissolution of the Trust
shall be distributed in the form of one or more Global Debentures registered in
the name of a 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 respective accounts of the beneficial owners of the
Debt Securities represented thereby (or such other accounts as they may direct).
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

                                      -19-
<PAGE>

and the Debt Securities, and owners of beneficial interests in a Global
Debenture shall hold such interests pursuant to the Applicable Depository
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 (including the payment of principal and interest
thereon and the giving of instructions or directions by owners of beneficial
interests therein and the giving of notices) as the sole Holder of the Debt
Security and shall have no obligations to the owners of beneficial interests
therein. Neither the Trustee nor the Debt Securities registrar shall have any
liability in respect of any transfers affected by the Depositary.

            (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 holder of any beneficial interest in any Global Debenture
held on its behalf by a Depositary shall have any rights under this Indenture
with respect to such Global Debenture, and such Depositary may be treated by the
Company, the Trustee and any agent of the Company or the Trustee as the owner of
such Global Debenture for all purposes whatsoever. None of the 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 of 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 a
Depositary or impair, as between a Depositary and such holders of beneficial
interests, the operation of customary practices governing the exercise of the
rights of the Depositary (or its nominee) as holder of any Debt Security.

                                  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 on the Debt Securities at
the place, at the respective times and in the manner provided in this Indenture
and the Debt Securities. At the option of the Company, each installment of
interest on the Debt Securities 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 to any
account with a banking institution located in the United States designated by
such Person to the Paying Agent no later than the related record date.

                                      -20-
<PAGE>

            (b) The Company will treat the Debt Securities as indebtedness, and
the interest payable in respect of such Debt Securities 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 to any beneficial
owner thereof that has provided an Internal Revenue Service Form W-8 BEN (or any
substitute or successor form) 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 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 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 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 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 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 for the purposes above mentioned. The Company
will give to the Trustee prompt written notice of any such designation or
rescission thereof.

                                      -21-
<PAGE>

      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:

                  (1) 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;

                  (2) 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

                  (3) 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 pay 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.

            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.

                                      -22-
<PAGE>

            (e) The Company hereby initially appoints the Trustee to act as
Paying Agent (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 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 Interest.

            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 Interest") on the Debt Securities as shall be required so that the
net amounts received and retained by the Trust for distribution to holders of
Trust Securities after paying all taxes (including withholding taxes on
distributions to holders of Trust Securities), duties, assessments or other
governmental charges will be equal to the amounts the Trust would have received
and retained for distribution to holders of Trust Securities after paying all
taxes (including withholding taxes on distributions to holders of Trust
Securities), duties, assessments or other governmental charges if no such
additional taxes, duties, assessments or other governmental charges had 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 Interest provided for in this paragraph to the extent that, in
such context, Additional Interest is, was or would be payable in respect thereof
pursuant to the provisions of this paragraph and express mention of the payment
of Additional Interest (if applicable) in any provisions hereof shall not be
construed as excluding Additional Interest 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 Interest 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 or convey all or substantially all of its property to any other
Person unless the provisions of Article XI hereof are complied with.

                                      -23-
<PAGE>

      SECTION 3.08. Limitation on Dividends.

            If Debt Securities are initially issued to the Trust or a trustee of
such Trust in connection with the issuance of Trust Securities by the Trust
(regardless of whether Debt Securities continue to be held by such Trust) and
(i) there shall have occurred and be continuing 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 distribution 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 or (B) make any payment of principal of or interest or premium, if
any, 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, reclassification, combination 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 to such stock.

      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 that is a U.S.
Person 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
certain 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.

                                      -24-
<PAGE>

                                   ARTICLE IV

                LISTS AND REPORTS BY THE COMPANY AND THE TRUSTEE

      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) 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:

                  (1) 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

                  (2) 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.

                                      -25-
<PAGE>

            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
permitted or required by applicable law, together with a copy of the material to
be mailed, a written statement to the effect that, in the opinion of the
Trustee, such mailing would be contrary to the best interests of the holders of
all Debt Securities, as the case may be, or would be in violation of applicable
law. Such written statement shall specify the basis of such opinion. If said
Commission, as permitted or required by applicable law, after opportunity for a
hearing upon the objections specified in the written statement so filed, shall
enter an order refusing to sustain any of such objections or if, after the entry
of an order sustaining one or more of such objections, said Commission shall
find, after notice and opportunity for hearing, that all the objections so
sustained have been met and shall enter an order so declaring, the Trustee shall
mail copies of such material to all such Securityholders with reasonable
promptness after the entry of such order and the renewal of such tender;
otherwise the Trustee shall be relieved of any obligation or duty to such
applicants respecting their application.

            (c) Each and every holder of Debt Securities, by receiving and
holding the same, agrees with the Company and the Trustee that neither the
Company nor the Trustee nor any Paying Agent shall be held accountable by reason
of the disclosure of any such information as to the names and addresses of the
holders of Debt Securities in accordance with the provisions of subsection (b)
of this Section 4.02, regardless of the source from which such information was
derived, and that the Trustee shall not be held accountable by reason of mailing
any material pursuant to a request made under said subsection (b).

                                    ARTICLE V

      REMEDIES OF THE TRUSTEE AND SECURITYHOLDERS UPON AN EVENT OF DEFAULT

      SECTION 5.01. Events of Default.

            The following events shall be "Events of Default" with respect to
Debt Securities:

            (a) the Company defaults in the payment of any interest upon any
Debt Security when it becomes due and payable, and continuance of such default
for a period of 30 days; for the avoidance of doubt, an extension of any
interest distribution period by the Company in accordance with Section 2.11 of
this Indenture shall not constitute a default under this clause 5.01(a); or

            (b) the Company defaults in the payment of all or any part of the
principal of (or premium, if any, on) any Debt Securities as and when the same
shall become due and payable

                                      -26-
<PAGE>

either at maturity, upon redemption, by declaration of acceleration pursuant to
Section 5.01 of this Indenture or otherwise; or

            (c) the Company defaults in the performance of, or breaches, any of
its covenants or agreements in Sections 3.06, 3.07, 3.08 or 3.09 of this
Indenture and continuance of such default or breach for a period of 30 days
after there has been given, by registered or certified mail, to the Company by
the Trustee or to the Company and the Trustee by the holders of not less than
25% in aggregate principal amount of the outstanding Debt Securities, a written
notice specifying such default or breach and requiring it to be remedied and
stating that such notice is a "Notice of Default' hereunder; or

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

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

            (f) the Trust shall have voluntarily or involuntarily liquidated,
dissolved, wound-up its business or otherwise terminated its existence except in
connection with (1) the distribution of the Debt Securities to holders of the
Trust Securities in liquidation of their interests in the Trust, (2) the
redemption of all of the outstanding Trust Securities or (3) certain mergers,
consolidations or amalgamations, each as permitted by the Declaration.

            (g) the Company shall cease to be subject to regulation or
supervision by the Federal Reserve or OTS, as applicable (or any successor
federal regulatory authority having jurisdiction over bank or savings and loan
holding companies).

            If an Event of Default specified under clause (a), (b), (d), (e),
(f), or (g) of this Section 5.01 (each an "Acceleration Event") occurs and is
continuing with respect to the Debt Securities, then, and in each and every such
case, unless the principal of the Debt Securities shall have already become due
and payable, either the Trustee or the holders of not less than 25% in aggregate
principal amount of the Debt Securities then outstanding hereunder, by notice in
writing to the Company (and to the Trustee if given by Securityholders), may
declare the entire principal of the Debt Securities and any premium and the
interest accrued, but unpaid, thereon, if any, to be due and payable
immediately, and upon any such declaration the same shall become immediately due
and payable. If the Company shall cease to be subject to the supervision or
regulation of the Federal Reserve, or OTS, as the case may be, then the term
"Acceleration Event" shall be defined to include clause (c) of this Section 5.01
as an Event of Default resulting

                                      -27-
<PAGE>

in acceleration of payment of the Debt Securities to the same extent provided
for clauses (a), (b), (d), (e), (f) and (g) of this Section 5.01.

            Anything in this Section 5.01 to the contrary notwithstanding, if an
Event of Default specified under clause (c) occurs and is continuing, then, and
in each and every such case, the Trustee, in its own name and as trustee of an
express trust, shall pursue all available remedies at law and/or equity against
the Company. The Company acknowledges and affirms that in the event of breach of
such covenants and agreements referenced in clause (c) of this Section 5.01, the
damages to the holders of the Debt Securities and the Capital Securities may be
difficult or impossible to ascertain. Therefore, in addition to any remedies
available at law for breach of any or all of said covenants or agreements, the
holders of the Debt Securities and the Capital Securities shall be entitled to
injunctive or other equitable relief in connection with the violation of any
such covenants or agreements referenced in Section 5.01(c).

            The foregoing provisions, however, are subject to the condition that
if, at any time after the principal of the Debt Securities shall have been so
declared due and payable, and before any judgment or decree for the payment of
the moneys due shall have been obtained or entered as hereinafter provided, (i)
the Company shall pay or shall deposit with the Trustee a sum sufficient to pay
all matured installments of interest upon all the Debt Securities and all
payments on the Debt Securities which shall have become due otherwise than by
acceleration (with interest upon all such payments and Deferred Interest, to the
extent permitted by law) and such amount as shall be sufficient to cover
reasonable compensation to the Trustee and each predecessor Trustee, their
respective agents, attorneys and counsel, and all other amounts due to the
Trustee pursuant to Section 6.06, if any, and (ii) all Events of Default under
this Indenture, other than the non-payment of the payments on Debt Securities
which shall have become due by acceleration, shall have been cured, waived or
otherwise remedied as provided herein, then and in every such case the holders
of a majority in aggregate principal amount of the Debt Securities then
outstanding, by written notice to the Company and to the Trustee, may waive all
defaults and rescind and annul such declaration and its consequences, but no
such waiver or rescission and annulment shall extend to or shall affect any
subsequent default or shall impair any right consequent thereon; provided,
however, that if the Debt Securities are held by the Trust or a trustee of the
Trust, such waiver or rescission and annulment shall not be effective until the
holders of a majority in aggregate liquidation amount of the outstanding Capital
Securities of the Trust shall have consented to such waiver or rescission and
annulment.

            In case the Trustee shall have proceeded to enforce any right under
this Indenture and such proceedings shall have been discontinued or abandoned
because of such rescission or annulment or for any other reason or shall have
been determined adversely to the Trustee, then and in every such case the
Company, the Trustee and the holders of the Debt Securities shall be restored
respectively to their several positions and rights hereunder, and all rights,
remedies and powers of the Company, the Trustee and the holders of the Debt
Securities shall continue as though no such proceeding had been taken.

      SECTION 5.02. Payment of Debt Securities on Default; Suit Therefor.

            The Company covenants that upon the occurrence of an Acceleration
Event, the Company will pay to the Trustee, for the benefit of the holders of
the Debt Securities, the whole

                                      -28-
<PAGE>

amount that then shall have become due and payable on all Debt Securities
including Deferred Interest accrued on the Debt Securities; and, in addition
thereto, such further amount as shall be sufficient to cover the costs and
expenses of collection, including a reasonable compensation to the Trustee, its
agents, attorneys and counsel, and any other amounts due to the Trustee under
Section 6.06. In case the Company shall fail forthwith to pay such amounts upon
such demand, the Trustee, in its own name and as trustee of an express trust,
shall be entitled and empowered to institute any actions or proceedings at law
or in equity for the collection of the sums so due and unpaid, and may prosecute
any such action or proceeding to judgment or final decree, and may enforce any
such judgment or final decree against the Company or any other obligor on such
Debt Securities and collect in the manner provided by law out of the property of
the Company or any other obligor on such Debt Securities wherever situated the
moneys adjudged or decreed to be payable.

            In case there shall be pending proceedings for the bankruptcy or for
the reorganization of the Company or any other obligor on the Debt Securities
under Bankruptcy Law, or in case a receiver or trustee shall have been appointed
for the property of the Company or such other obligor, or in the case of any
other similar judicial proceedings relative to the Company or other obligor upon
the Debt Securities, or to the creditors or property of the Company or such
other obligor, the Trustee, irrespective of whether the principal of the Debt
Securities shall then be due and payable as therein expressed or by declaration
of acceleration or otherwise and irrespective of whether the Trustee shall have
made any demand pursuant to the provisions of this Section 5.02, shall be
entitled and empowered, by intervention in such proceedings or otherwise, to
file and prove a claim or claims for the whole amount of principal and interest
owing and unpaid in respect of the Debt Securities and, in case of any judicial
proceedings, to file such proofs of claim and other papers or documents as may
be necessary or advisable in order to have the claims of the Trustee (including
any claim for reasonable compensation to the Trustee and each predecessor
Trustee, and their respective agents, attorneys and counsel, and for
reimbursement of all other amounts due to the Trustee under Section 6.06) and of
the Securityholders allowed in such judicial proceedings relative to the Company
or any other obligor on the Debt Securities, or to the creditors or property of
the Company or such other obligor, unless prohibited by applicable law and
regulations, to vote on behalf of the holders of the Debt Securities in any
election of a trustee or a standby trustee in arrangement, reorganization,
liquidation or other bankruptcy or insolvency proceedings or Person performing
similar functions in comparable proceedings, and to collect and receive any
moneys or other property payable or deliverable on any such claims, and to
distribute the same after the deduction of its charges and expenses; and any
receiver, assignee or trustee in bankruptcy or reorganization is hereby
authorized by each of the Securityholders 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 Securityholders, to pay to the Trustee such amounts as shall be
sufficient to cover reasonable compensation to the Trustee, each predecessor
Trustee and their respective agents, attorneys and counsel, and all other
amounts due to the Trustee under Section 6.06.

            Nothing herein contained shall be construed to authorize the Trustee
to authorize or consent to or accept or adopt on behalf of any Securityholder
any plan of reorganization, arrangement, adjustment or composition affecting the
Debt Securities or the rights of any holder thereof or to authorize the Trustee
to vote in respect of the claim of any Securityholder in any such proceeding.

                                      -29-
<PAGE>

            All rights of action and of asserting claims under this Indenture,
or under any of the Debt Securities, may be enforced by the Trustee without the
possession of any of the Debt Securities, or the production thereof at any trial
or other proceeding relative thereto, and any such suit or proceeding instituted
by the Trustee shall be brought in its own name as trustee of an express trust,
and any recovery of judgment shall be for the ratable benefit of the holders of
the Debt Securities.

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

      SECTION 5.03. Application of Moneys Collected by Trustee.

            Any moneys collected by the Trustee shall be applied in the
following order, at the date or dates fixed by the Trustee for the distribution
of such moneys, upon presentation of the several Debt Securities in respect of
which moneys have been collected, and stamping thereon the payment, if only
partially paid, and upon surrender thereof if fully paid:

            First: To the payment of costs and expenses incurred by, and
reasonable fees of, the Trustee, its agents, attorneys and counsel, and of all
other amounts due to the Trustee under Section 6.06;

            Second: To the payment of all Senior Indebtedness of the Company if
and to the extent required by Article XV;

            Third: To the payment of the amounts then due and unpaid upon Debt
Securities, in respect of which or for the benefit of which money has been
collected, ratably, without preference or priority of any kind, according to the
amounts due on such Debt Securities; and

            Fourth: The balance, if any, to the Company.

      SECTION 5.04. Proceedings by Securityholders.

            No holder of any Debt Security shall have any right to institute any
suit, action or proceeding for any remedy hereunder, unless such holder
previously shall have given to the Trustee written notice of an Event of Default
with respect to the Debt Securities and unless the holders of not less than 25%
in aggregate principal amount of the Debt Securities then outstanding shall have
given the Trustee a written request to institute such action, suit or proceeding
and shall have offered to the Trustee such reasonable indemnity as it may
require against the costs, expenses and liabilities to be incurred thereby, and
the Trustee for 60 days after its receipt of such notice, request and offer of
indemnity shall have failed to institute any such action, suit or proceeding;
provided, that no holder of Debt Securities shall have any right to prejudice
the rights of any other holder of Debt Securities, obtain priority or preference
over any other such holder or enforce any right under this Indenture except in
the manner herein provided and for the equal, ratable and common benefit of all
holders of Debt Securities.

                                      -30-
<PAGE>

            Notwithstanding any other provisions in this Indenture, however, the
right of any holder of any Debt Security to receive payment of the principal of,
premium, if any, and interest on such Debt Security when due, or to institute
suit for the enforcement of any such payment, shall not be impaired or affected
without the consent of such holder. For the protection and enforcement of the
provisions of this Section, each and every Securityholder and the Trustee shall
be entitled to such relief as can be given either at law or in equity.

      SECTION 5.05. Proceedings by Trustee.

            In case of an Event of Default hereunder the Trustee may in its
discretion proceed to protect and enforce the rights vested in it by this
Indenture by such appropriate judicial proceedings as the Trustee shall deem
most effectual to protect and enforce any of such rights, either by suit in
equity or by action at law or by proceeding in bankruptcy or otherwise, whether
for the specific enforcement of any covenant or agreement contained in this
Indenture or in aid of the exercise of any power granted in this Indenture, or
to enforce any other legal or equitable right vested in the Trustee by this
Indenture or by law.

      SECTION 5.06. Remedies Cumulative and Continuing.

            Except as otherwise provided in Section 2.06, all powers and
remedies given by this Article V to the Trustee or to the Securityholders shall,
to the extent permitted by law, be deemed cumulative and not exclusive of any
other powers and remedies available to the Trustee or the holders of the Debt
Securities, by judicial proceedings or otherwise, to enforce the performance or
observance of the covenants and agreements contained in this Indenture or
otherwise established with respect to the Debt Securities, and no delay or
omission of the Trustee or of any holder of any of the Debt Securities to
exercise any right or power accruing upon any Event of Default occurring and
continuing as aforesaid shall impair any such right or power, or shall be
construed to be a waiver of any such default or an acquiescence therein; and,
subject to the provisions of Section 5.04, every power and remedy given by this
Article V or by law to the Trustee or to the Securityholders may be exercised
from time to time, and as often as shall be deemed expedient, by the Trustee or
by the Securityholders.

      SECTION 5.07. Direction of Proceedings and Waiver of Defaults by Majority
of Securityholders.

            The holders of a majority in aggregate principal amount of the Debt
Securities affected (voting as one class) at the time outstanding and, if the
Debt Securities are held by the Trust or a trustee of the Trust, the holders of
a majority in aggregate liquidation amount of the outstanding Capital Securities
of the Trust shall have the right to direct the time, method and place of
conducting any proceeding for any remedy available to the Trustee, or exercising
any trust or power conferred on the Trustee with respect to such Debt
Securities; provided, however, that if the Debt Securities are held by the Trust
or a trustee of the Trust, such time, method and place or such exercise, as the
case may be, may not be so directed until the holders of a majority in aggregate
liquidation amount of the outstanding Capital Securities of the Trust shall have
directed such time, method and place or such exercise, as the case may be;
provided, further, that (subject to the provisions of Section 6.01) the Trustee
shall have the right to decline to follow any such direction if the Trustee
being advised by counsel shall determine that the action so

                                      -31-
<PAGE>

directed would be unjustly prejudicial to the holders not taking part in such
direction or if the Trustee being advised by counsel determines that the action
or proceeding so directed may not lawfully be taken or if a Responsible Officer
of the Trustee shall determine that the action or proceedings so directed would
involve the Trustee in personal liability. Prior to any declaration of
acceleration, or ipso facto acceleration of the maturity of the Debt Securities,
the holders of a majority in aggregate principal amount of the Debt Securities
at the time outstanding may on behalf of the holders of all of the Debt
Securities waive (or modify any previously granted waiver of) any past default
or Event of Default and its consequences, except a default (a) in the payment of
principal of, premium, if any, or interest on any of the Debt Securities, (b) in
respect of covenants or provisions hereof which cannot be modified or amended
without the consent of the holder of each Debt Security affected, or (c) in
respect of the covenants contained in Section 3.09; provided, however, that if
the Debt Securities are held by the Trust or a trustee of the Trust, such waiver
or modification to such waiver shall not be effective until the holders of a
majority in Liquidation Amount of the Trust Securities of the Trust shall have
consented to such waiver or modification to such waiver; provided, further, that
if the consent of the holder of each outstanding Debt Security is required, such
waiver or modification to such waiver shall not be effective until each holder
of the outstanding Capital Securities of the Trust shall have consented to such
waiver or modification to such waiver. Upon any such waiver or modification to
such waiver, the Default or Event of Default covered thereby shall be deemed to
be cured for all purposes of this Indenture and the Company, the Trustee and the
holders of the Debt Securities shall be restored to their former positions and
rights hereunder, respectively; but no such waiver or modification to such
waiver shall extend to any subsequent or other Default or Event of Default or
impair any right consequent thereon. Whenever any Default or Event of Default
hereunder shall have been waived as permitted by this Section 5.07, said Default
or Event of Default shall for all purposes of the Debt Securities and this
Indenture be deemed to have been cured and to be not continuing.

      SECTION 5.08. Notice of Defaults.

            The Trustee shall, within 90 days after a Responsible Officer of the
Trustee shall have actual knowledge or received written notice of the occurrence
of a Default with respect to the Debt Securities, mail to all Securityholders,
as the names and addresses of such holders appear upon the Debt Security
Register, notice of all Defaults with respect to the Debt Securities known to
the Trustee, unless such defaults shall have been cured before the giving of
such notice (the term "defaults" for the purpose of this Section 5.08 being
hereby defined to be the events specified in subsections (a), (b), (c), (d) and
(e) of Section 5.01, not including periods of grace, if any, provided for
therein); provided, that, except in the case of default in the payment of the
principal of, premium, if any, or interest on any of the Debt Securities, the
Trustee shall be protected in withholding such notice if and so long as a
Responsible Officer of the Trustee in good faith determines that the withholding
of such notice is in the interests of the Securityholders.

      SECTION 5.09. Undertaking to Pay Costs.

            All parties to this Indenture agree, and each holder of any Debt
Security by such holder's acceptance thereof shall be deemed to have agreed,
that any court may in its discretion require, in any suit for the enforcement of
any right or remedy under this Indenture, or in any suit

                                      -32-
<PAGE>

against the Trustee for any action taken or omitted by it as Trustee, the filing
by any party litigant in such suit of an undertaking to pay the costs of such
suit, and that such court may in its discretion assess reasonable costs,
including reasonable attorneys' fees and expenses, against any party litigant in
such suit, having due regard to the merits and good faith of the claims or
defenses made by such party litigant; but the provisions of this Section 5.09
shall not apply to any suit instituted by the Trustee, to any suit instituted by
any Securityholder, or group of Securityholders, holding in the aggregate more
than 10% in principal amount of the Debt Securities (or, if such Debt Securities
are held by the Trust or a trustee of the Trust, more than 10% in liquidation
amount of the outstanding Capital Securities) to any suit instituted by any
Securityholder for the enforcement of the payment of the principal of (or
premium, if any) or interest on any Debt Security against the Company on or
after the same shall have become due and payable, or to any suit instituted in
accordance with Section 14.12.

                                   ARTICLE VI

                             CONCERNING THE TRUSTEE

      SECTION 6.01. Duties and Responsibilities of Trustee.

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

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

            (a) prior to the occurrence of an Event of Default with respect to
the Debt Securities and after the curing or waiving of all Events of Default
which may have occurred

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

                  (2) in the absence of bad faith on the part of the Trustee,
            the Trustee may conclusively rely, as to the truth of the statements
            and the correctness of the opinions expressed therein, upon any
            certificates or opinions furnished to the Trustee and conforming to
            the requirements of this Indenture; but, in the case of

                                      -33-
<PAGE>

            any such certificates or opinions which by any provision hereof are
            specifically required to be furnished to the Trustee, the Trustee
            shall be under a duty to examine the same to determine whether or
            not they conform on their face to the requirements of this
            Indenture;

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

            (c) the Trustee shall not be liable with respect to any action taken
or omitted to be taken by it in good faith, in accordance with the direction of
the Securityholders pursuant to Section 5.07, relating to the time, method and
place of conducting any proceeding for any remedy available to the Trustee, or
exercising any trust or power conferred upon the Trustee, under this Indenture;

            (d) the Trustee shall not be charged with knowledge of any Default
or Event of Default with respect to the Debt Securities unless either (1) a
Responsible Officer shall have actual knowledge of such Default or Event of
Default or (2) written notice of such Default or Event of Default shall have
been given to the Trustee by the Company or any other obligor on the Debt
Securities or by any holder of the Debt Securities, except with respect to an
Event of Default pursuant to Sections 5.01 (a) or 5.01 (b) hereof (other than an
Event of Default resulting from the default in the payment of Additional
Interest or premium, if any, if the Trustee does not have actual knowledge or
written notice that such payment is due and payable), of which the Trustee shall
be deemed to have knowledge; and

            (e) in the absence of bad faith on the part of the Trustee, the
Trustee may seek and rely on reasonable instructions from the Company.

            None of the provisions contained in this Indenture shall require the
Trustee to expend or risk its own funds or otherwise incur personal financial
liability in the performance of any of its duties or in the exercise of any of
its rights or powers.

      SECTION 6.02. Reliance on Documents, Opinions, etc.

            Except as otherwise provided in Section 6.01:

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

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

            (c) the Trustee may consult with counsel of its selection and any
advice or Opinion of Counsel shall be full and complete authorization and
protection in respect of any

                                      -34-
<PAGE>

action taken, suffered or omitted by it hereunder in good faith and in
accordance with such advice or Opinion of Counsel;

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

            (e) the Trustee shall not be liable for any action taken or omitted
by it in good faith and reasonably believed by it to be authorized or within the
discretion or rights or powers conferred upon it by this Indenture; nothing
contained herein shall, however, relieve the Trustee of the obligation, upon the
occurrence of an Event of Default with respect to the Debt Securities (that has
not been cured or waived) to exercise with respect to the Debt Securities such
of the rights and powers vested in it by this Indenture, and to use the same
degree of care and skill in their exercise, as a prudent person would exercise
or use under the circumstances in the conduct of such person's own affairs;

            (f) the Trustee shall not be bound to make any investigation into
the facts or matters stated in any resolution, certificate, statement,
instrument, opinion, report, notice, request, consent, order, approval, bond,
debenture, coupon or other paper or document, unless requested in writing to do
so by the holders of not less than a majority in principal amount of the
outstanding Debt Securities affected thereby; provided, however, that if the
payment within a reasonable time to the Trustee of the costs, expenses or
liabilities likely to be incurred by it in the making of such investigation is,
in the opinion of the Trustee, not reasonably assured to the Trustee by the
security afforded to it by the terms of this Indenture, the Trustee may require
reasonable indemnity against such expense or liability as a condition to so
proceeding; and

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

      SECTION 6.03. No Responsibility for Recitals, etc.

            The recitals contained herein and in the Debt Securities (except in
the certificate of authentication of the Trustee or the Authenticating Agent)
shall be taken as the statements of the Company and the Trustee and the
Authenticating Agent assume no responsibility for the correctness of the same.
The Trustee and the Authenticating Agent make no representations as to the
validity or sufficiency of this Indenture or of the Debt Securities. The Trustee
and the Authenticating Agent shall not be accountable for the use or application
by the Company of any Debt Securities or the proceeds of any Debt Securities
authenticated and delivered by the Trustee or the Authenticating Agent in
conformity with the provisions of this Indenture.

                                      -35-
<PAGE>

      SECTION 6.04. Trustee, Authenticating Agent, Paying Agents, Transfer
Agents or Registrar May Own Debt Securities.

            The Trustee or any Authenticating Agent or any Paying Agent or any
transfer agent or any Debt Security registrar, in its individual or any other
capacity, may become the owner or pledgee of Debt Securities with the same
rights it would have if it were not Trustee, Authenticating Agent, Paying Agent,
transfer agent or Debt Security registrar.

      SECTION 6.05. Moneys to be Held in Trust.

            Subject to the provisions of Section 12.04, all moneys received by
the Trustee or any Paying Agent shall, until used or applied as herein provided,
be held in trust for the purpose for which they were received, but need not be
segregated from other funds except to the extent required by law. The Trustee
and any Paying Agent shall be under no liability for interest on any money
received by it hereunder except as otherwise agreed in writing with the Company.
So long as no Event of Default shall have occurred and be continuing, all
interest allowed on any such moneys, if any, shall be paid from time to time to
the Company upon the written order of the Company, signed by the Chairman of the
Board of Directors, the President, the Chief Operating Officer, a Vice
President, the Treasurer or an Assistant Treasurer of the Company.

      SECTION 6.06. Compensation and Expenses of Trustee.

            Other than as provided in the Fee Agreement of even date herewith,
the Company covenants and agrees to pay to the Trustee from time to time, and
the Trustee shall be entitled to, such compensation as shall be agreed to in
writing between the Company and the Trustee (which shall not be limited by any
provision of law in regard to the compensation of a trustee of an express
trust), and the Company will pay or reimburse the Trustee upon its written
request for all documented reasonable expenses, disbursements and advances
incurred or made by the Trustee in accordance with any of the provisions of this
Indenture (including the reasonable compensation and the reasonable expenses and
disbursements of its counsel and of all Persons not regularly in its employ)
except any such expense, disbursement or advance that arises from its
negligence, willful misconduct or bad faith. The Company also covenants to
indemnify each of the Trustee (including in its individual capacity) and any
predecessor Trustee (and its officers, agents, directors and employees) for, and
to hold it harmless against, any and all loss, damage, claim, liability or
expense including taxes (other than taxes based on the income of the Trustee),
except to the extent such loss, damage, claim, liability or expense results from
the negligence, willful misconduct or bad faith of such indemnitee, 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 or
liability in the premises. The obligations of the Company under this Section
6.06 to compensate and indemnify the Trustee and to pay or reimburse the Trustee
for documented expenses, disbursements and advances shall constitute additional
indebtedness hereunder. Such additional indebtedness shall be secured by (and
the Company hereby grants and pledges to the Trustee) a lien prior to that of
the Debt Securities upon all property and funds held or collected by the Trustee
as such, except funds held in trust for the benefit of the holders of particular
Debt Securities.

                                      -36-
<PAGE>

            Without prejudice to any other rights available to the Trustee under
applicable law, when the Trustee incurs expenses or renders services in
connection with an Event of Default specified in subsections (d), (e) or (f) of
Section 5.01, the expenses (including the reasonable charges and expenses of its
counsel) and the compensation for the services are intended to constitute
expenses of administration under any applicable federal or state bankruptcy,
insolvency or other similar law.

            The provisions of this Section shall survive the resignation or
removal of the Trustee and the defeasance or other termination of this
Indenture.

      SECTION 6.07. Officers' Certificate as Evidence.

            Except as otherwise provided in Sections 6.01 and 6.02, whenever in
the administration of the provisions of this Indenture the Trustee shall deem it
necessary or desirable that a matter be proved or established prior to taking or
omitting any action hereunder, such matter (unless other evidence in respect
thereof be herein specifically prescribed) may, in the absence of negligence,
willful misconduct or bad faith on the part of the Trustee, be deemed to be
conclusively proved and established by an Officers' Certificate delivered to the
Trustee, and such certificate, in the absence of negligence, willful misconduct
or bad faith on the part of the Trustee, shall be full warrant to the Trustee
for any action taken or omitted by it under the provisions of this Indenture
upon the faith thereof.

      SECTION 6.08. Eligibility of Trustee.

            The Trustee hereunder shall at all times be a U.S. Person that is a
banking corporation or national association organized and doing business under
the laws of the United States of America or any state thereof or of the District
of Columbia and authorized under such laws to exercise corporate trust powers,
having a combined capital and surplus of at least fifty million U.S. dollars
($50,000,000) and subject to supervision or examination by federal, state, or
District of Columbia authority. If such corporation or national association
publishes reports of condition at least annually, pursuant to law or to the
requirements of the aforesaid supervising or examining authority, then for the
purposes of this Section 6.08 the combined capital and surplus of such
corporation or national association shall be deemed to be its combined capital
and surplus as set forth in its most recent records of condition so published.

            The Company may not, nor may any Person directly or indirectly
controlling, controlled by, or under common control with the Company, serve as
Trustee, notwithstanding that such corporation or national association shall be
otherwise eligible and qualified under this Article.

            In case at any time the Trustee shall cease to be eligible in
accordance with the provisions of this Section 6.08, the Trustee shall resign
immediately in the manner and with the effect specified in Section 6.09.

            If the Trustee has or shall acquire any "conflicting interest"
within the meaning of Section 310(b) of the Trust Indenture Act, the Trustee
shall either eliminate such interest or resign, to the extent and in the manner
provided by, and subject to this Indenture.

                                      -37-
<PAGE>

      SECTION 6.09. Resignation or Removal of Trustee, Calculation Agent, Paying
Agent or Debt Security Registrar.

            (a) The Trustee, or any trustee or trustees hereafter appointed, the
Calculation Agent, the Paying Agent and any Debt Security Registrar may at any
time resign by giving written notice of such resignation to the Company and by
mailing notice thereof, at the Company's expense, to the holders of the Debt
Securities at their addresses as they shall appear on the Debt Security
Register. Upon receiving such notice of resignation, the Company shall promptly
appoint a successor or successors by written instrument, in duplicate, executed
by order of its Board of Directors, one copy of which instrument shall be
delivered to the resigning party and one copy to the successor. If no successor
shall have been so appointed and have accepted appointment within 30 days after
the mailing of such notice of resignation to the affected Securityholders, the
resigning party may petition any court of competent jurisdiction for the
appointment of a successor, or any Securityholder who has been a bona fide
holder of a Debt Security or Debt Securities for at least six months may,
subject to the provisions of Section 5.09, on behalf of himself or herself and
all others similarly situated, petition any such court for the appointment of a
successor. Such court may thereupon, after such notice, if any, as it may deem
proper and prescribe, appoint a successor.

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

                  (1) the Trustee shall fail to comply with the provisions of
            the last paragraph of Section 6.08 after written request therefor by
            the Company or by any Securityholder who has been a bona fide holder
            of a Debt Security or Debt Securities for at least six months,

                  (2) the Trustee shall cease to be eligible in accordance with
            the provisions of Section 6.08 and shall fail to resign after
            written request therefor by the Company or by any such
            Securityholder, or

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

then, in any such case, the Company may remove the Trustee and appoint a
successor Trustee by written instrument, in duplicate, executed by order of the
Board of Directors, one copy of which instrument shall be delivered to the
Trustee so removed and one copy to the successor Trustee, or, subject to the
provisions of Section 5.09, if no successor Trustee shall have been so appointed
and have accepted appointment within 30 days of the occurrence of any of (1),
(2) or (3) above, any Securityholder who has been a bona fide holder of a Debt
Security or Debt Securities for at least six months may, on behalf of himself or
herself and all others similarly situated, petition any court of competent
jurisdiction for the removal of the Trustee and the appointment of a successor
Trustee. Such court may thereupon, after such notice, if any, as it may deem
proper and prescribe, remove the Trustee and appoint a successor Trustee.

                                      -38-
<PAGE>

            (c) Upon prior written notice to the Company and the Trustee, the
holders of a majority in aggregate principal amount of the Debt Securities at
the time outstanding may at any time remove the Trustee and nominate a successor
Trustee, which shall be deemed appointed as successor Trustee unless within ten
Business Days after such nomination the Company objects thereto, in which case
or in the case of a failure by such holders to nominate a successor Trustee, the
Trustee so removed or any Securityholder, upon the terms and conditions and
otherwise as in subsection (a) of this Section 6.09 provided, may petition any
court of competent jurisdiction for an appointment of a successor.

            (d) Any resignation or removal of the Trustee, the Calculation
Agent, the Paying Agent and any Debt Security Registrar and appointment of a
successor pursuant to any of the provisions of this Section 6.09 shall become
effective upon acceptance of appointment by the successor as provided in Section
6.10.

      SECTION 6.10. Acceptance by Successor.

            Any successor Trustee, Calculation Agent, Paying Agent or Debt
Security Registrar appointed as provided in Section 6.09 shall execute,
acknowledge and deliver to the Company and to its predecessor an instrument
accepting such appointment hereunder, and thereupon the resignation or removal
of the retiring party shall become effective and such successor, without any
further act, deed or conveyance, shall become vested with all the rights,
powers, duties and obligations with respect to the Debt Securities of its
predecessor hereunder, with like effect as if originally named herein; but,
nevertheless, on the written request of the Company or of the successor, the
party ceasing to act shall, upon payment of the amounts then due it pursuant to
the provisions of Section 6.06, execute and deliver an instrument transferring
to such successor all the rights and powers of the party so ceasing to act and
shall duly assign, transfer and deliver to such successor all property and money
held by such retiring party hereunder. Upon request of any such successor, the
Company shall execute any and all instruments in writing for more fully and
certainly vesting in and confirming to such successor all such rights and
powers. Any party ceasing to act shall, nevertheless, retain a lien upon all
property or funds held or collected to secure any amounts then due it pursuant
to the provisions of Section 6.06.

            If a successor Trustee is appointed, the Company, the retiring
Trustee and the successor Trustee shall execute and deliver an indenture
supplemental hereto which shall contain such provisions as shall be deemed
necessary or desirable to confirm that all the rights, powers, trusts and duties
of the retiring Trustee with respect to the Debt Securities as to which the
predecessor Trustee is not retiring shall continue to be vested in the
predecessor Trustee, and shall add to or change any of the provisions of this
Indenture as shall be necessary to provide for or facilitate the administration
of the Trust hereunder by more than one Trustee, it being understood that
nothing herein or in such supplemental indenture shall constitute such Trustees
co-trustees of the same trust and that each such Trustee shall be Trustee of a
trust or trusts hereunder separate and apart from any trust or trusts hereunder
administered by any other such Trustee.

                                      -39-
<PAGE>

            No successor Trustee shall accept appointment as provided in this
Section 6.10 unless at the time of such acceptance such successor Trustee shall
be eligible and qualified under the provisions of Section 6.08.

            In no event shall a retiring Trustee, Calculation Agent, Paying
Agent or Debt Security Registrar be liable for the acts or omissions of any
successor hereunder.

            Upon acceptance of appointment by a successor Trustee, Calculation
Agent, Paying Agent or Debt Security Registrar as provided in this Section 6.10,
the Company shall mail notice of the succession to the holders of Debt
Securities at their addresses as they shall appear on the Debt Security
Register. If the Company fails to mail such notice within ten Business Days
after the acceptance of appointment by the successor, the successor shall cause
such notice to be mailed at the expense of the Company.

      SECTION 6.11. Succession by Merger, etc.

            Any Person into which the Trustee may be merged or converted or with
which it may be consolidated, or any Person resulting from any merger,
conversion or consolidation to which the Trustee shall be a party, or any Person
succeeding to all or substantially all of the corporate trust business of the
Trustee, shall be the successor of the Trustee hereunder without the execution
or filing of any paper or any further act on the part of any of the parties
hereto; provided, that such Person shall be otherwise eligible and qualified
under this Article.

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

      SECTION 6.12. Authenticating Agents.

            There may be one or more Authenticating Agents appointed by the
Trustee upon the request of the Company with power to act on its behalf and
subject to its direction in the authentication and delivery of Debt Securities
issued upon exchange or registration of transfer thereof as fully to all intents
and purposes as though any such Authenticating Agent had been expressly
authorized to authenticate and deliver Debt Securities; provided, that the
Trustee shall have no liability to the Company for any acts or omissions of the
Authenticating Agent with respect to the authentication and delivery of Debt
Securities. Any such Authenticating Agent shall at all times be a Person
organized and doing business under the laws of the United States or of any state
or territory thereof or of the District of Columbia authorized under such laws
to act as Authenticating Agent, having a combined capital and surplus of at
least $50,000,000 and

                                      -40-
<PAGE>

being subject to supervision or examination by federal, state, territorial or
District of Columbia authority. If such Person publishes reports of condition at
least annually pursuant to law or the requirements of such authority, then for
the purposes of this Section 6.12 the combined capital and surplus of such
Person shall be deemed to be its combined capital and surplus as set forth in
its most recent report of condition so published. If at any time an
Authenticating Agent shall cease to be eligible in accordance with the
provisions of this Section, it shall resign immediately in the manner and with
the effect herein specified in this Section.

            Any Person into which any Authenticating Agent may be merged or
converted or with which it may be consolidated, or any Person resulting from any
merger, consolidation or conversion to which any Authenticating Agent shall be a
party, or any Person succeeding to all or substantially all of the corporate
trust business of any Authenticating Agent, shall be the successor of such
Authenticating Agent hereunder, if such successor Person is otherwise eligible
under this Section 6.12 without the execution or filing of any paper or any
further act on the part of the parties hereto or such Authenticating Agent.

            Any Authenticating Agent may at any time resign by giving written
notice of resignation to the Trustee and to the Company. The Trustee may at any
time terminate the agency of any Authenticating Agent with respect to the Debt
Securities by giving written notice of termination to such Authenticating Agent
and to the Company. Upon receiving such a notice of resignation or upon such a
termination, or in case at any time any Authenticating Agent shall cease to be
eligible under this Section 6.12, the Trustee may, and upon the request of the
Company shall, promptly appoint a successor Authenticating Agent eligible under
this Section 6.12, shall give written notice of such appointment to the Company
and shall mail notice of such appointment to all holders of Debt Securities as
the names and addresses of such holders appear on the Debt Security Register.
Any successor Authenticating Agent upon acceptance of its appointment hereunder
shall become vested with all rights, powers, duties and responsibilities with
respect to the Debt Securities of its predecessor hereunder, with like effect as
if originally named as Authenticating Agent herein.

            Other than as provided in the Fee Agreement of even date herewith,
the Company agrees to pay to any Authenticating Agent from time to time
reasonable compensation for its services. Any Authenticating Agent shall have no
responsibility or liability for any action taken by it as such in accordance
with the directions of the Trustee and shall receive such reasonable indemnity
as it may require against the costs, expenses and liabilities incurred in
furtherance of its duties under this Section 6.12.

                                  ARTICLE VII

                         CONCERNING THE SECURITYHOLDERS

      SECTION 7.01. Action by Securityholders.

            Whenever in this Indenture it is provided that the holders of a
specified percentage in aggregate principal amount of the Debt Securities or
aggregate Liquidation Amount of the Capital Securities may take any action
(including the making of any demand or request, the giving of any notice,
consent or waiver or the taking of any other action), the fact

                                      -41-
<PAGE>

that at the time of taking any such action the holders of such specified
percentage have joined therein may be evidenced (a) by any instrument or any
number of instruments of similar tenor executed by such Securityholders or
holders of Capital Securities, as the case may be, in person or by agent or
proxy appointed in writing, or (b) by the record of such holders of Debt
Securities voting in favor thereof at any meeting of such Securityholders duly
called and held in accordance with the provisions of Article VIII, or of such
holders of Capital Securities duly called and held in accordance with the
provisions of the Declaration, or (c) by a combination of such instrument or
instruments and any such record of such a meeting of such Securityholders, or
holders of Capital Securities, as the case may be, or (d) by any other method
the Trustee deems satisfactory.

            If the Company shall solicit from the Securityholders any request,
demand, authorization, direction, notice, consent, waiver or other action or
revocation of the same, the Company may, at its option, as evidenced by an
Officers' Certificate, fix in advance a record date for such Debt Securities for
the determination of Securityholders entitled to give such request, demand,
authorization, direction, notice, consent, waiver or other action or revocation
of the same, 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 action or revocation of the same may be given before or after
the record date, but only the Securityholders of record at the close of business
on the record date shall be deemed to be Securityholders for the purposes of
determining whether Securityholders of the requisite proportion of outstanding
Debt Securities have authorized or agreed or consented to such request, demand,
authorization, direction, notice, consent, waiver or other action or revocation
of the same, and for that purpose the outstanding Debt Securities shall be
computed as of the record date; provided, however, that no such authorization,
agreement or consent by such Securityholders on the record date shall be deemed
effective unless it shall become effective pursuant to the provisions of this
Indenture not later than six months after the record date.

      SECTION 7.02. Proof of Execution by Securityholders.

            Subject to the provisions of Sections 6.01, 6.02 and 8.05, proof of
the execution of any instrument by a Securityholder or such Securityholder's
agent or proxy shall be sufficient if made in accordance with such reasonable
rules and regulations as may be prescribed by the Trustee or in such manner as
shall be satisfactory to the Trustee. The ownership of Debt Securities shall be
proved by the Debt Security Register or by a certificate of the Debt Security
Registrar. The Trustee may require such additional proof of any matter referred
to in this Section as it shall deem necessary.

            The record of any Securityholders' meeting shall be proved in the
manner provided in Section 8.06.

      SECTION 7.03. Who Are Deemed Absolute Owners.

            Prior to due presentment for registration of transfer of any Debt
Security, the Company, the Trustee, any Authenticating Agent, any Paying Agent,
any transfer agent and any Debt Security registrar may deem the Person in whose
name such Debt Security shall be registered upon the Debt Security Register to
be, and may treat such Person as, the absolute owner of such Debt Security
(whether or not such Debt Security shall be overdue) for the

                                      -42-
<PAGE>

purpose of receiving payment of or on account of the principal of, premium, if
any, and interest on such Debt Security and for all other purposes; and neither
the Company nor the Trustee nor any Authenticating Agent nor any Paying Agent
nor any transfer agent nor any Debt Security registrar shall be affected by any
notice to the contrary. All such payments so made to any holder for the time
being or upon such holder's order shall be valid, and, to the extent of the sum
or sums so paid, effectual to satisfy and discharge the liability for moneys
payable upon any such Debt Security.

      SECTION 7.04. Debt Securities Owned by Company Deemed Not Outstanding.

            In determining whether the holders of the requisite aggregate
principal amount of Debt Securities have concurred in any direction, consent or
waiver under this Indenture, Debt Securities which are owned by the Company or
any other obligor on the Debt Securities or by any Person directly or indirectly
controlling or controlled by or under direct or indirect common control with the
Company (other than the Trust) or any other obligor on the Debt Securities shall
be disregarded and deemed not to be outstanding for the purpose of any such
determination; provided, that for the purposes of determining whether the
Trustee shall be protected in relying on any such direction, consent or waiver,
only Debt Securities which a Responsible Officer of the Trustee actually knows
are so owned shall be so disregarded. Debt Securities so owned which have been
pledged in good faith may be regarded as outstanding for the purposes of this
Section 7.04 if the pledgee shall establish to the satisfaction of the Trustee
the pledgee's right to vote such Debt Securities and that the pledgee is not the
Company or any such other obligor or Person directly or indirectly controlling
or controlled by or under direct or indirect common control with the Company or
any such other obligor. In the case of a dispute as to such right, any decision
by the Trustee taken upon the advice of counsel shall be full protection to the
Trustee.

      SECTION 7.05. Revocation of Consents; Future Securityholders Bound.

            At any time prior to (but not after) the evidencing to the Trustee,
as provided in Section 7.01, of the taking of any action by the holders of the
percentage in aggregate principal amount of the Debt Securities specified in
this Indenture in connection with such action, any holder (in cases where no
record date has been set pursuant to Section 7.01) or any holder as of an
applicable record date (in cases where a record date has been set pursuant to
Section 7.01) of a Debt Security (or any Debt Security issued in whole or in
part in exchange or substitution therefor) the serial number of which is shown
by the evidence to be included in the Debt Securities the holders of which have
consented to such action may, by filing written notice with the Trustee at the
Principal Office of the Trustee and upon proof of holding as provided in Section
7.02, revoke such action so far as concerns such Debt Security (or so far as
concerns the principal amount represented by any exchanged or substituted Debt
Security). Except as aforesaid any such action taken by the holder of any Debt
Security shall be conclusive and binding upon such holder and upon all future
holders and owners of such Debt Security, and of any Debt Security issued in
exchange or substitution therefor or on registration of transfer thereof,
irrespective of whether or not any notation in regard thereto is made upon such
Debt Security or any Debt Security issued in exchange or substitution therefor.

                                      -43-
<PAGE>

                                  ARTICLE VIII

                            SECURITYHOLDERS' MEETINGS

      SECTION 8.01. Purposes of Meetings.

            A meeting of Securityholders may be called at any time and from time
to time pursuant to the provisions of this Article VIII for any of the following
purposes:

            (a) to give any notice to the Company or to the Trustee, or to give
any directions to the Trustee, or to consent to the waiving of any default
hereunder and its consequences, or to take any other action authorized to be
taken by Securityholders pursuant to any of the provisions of Article V;

            (b) to remove the Trustee and nominate a successor trustee pursuant
to the provisions of Article VI;

            (c) to consent to the execution of an indenture or indentures
supplemental hereto pursuant to the provisions of Section 9.02; or

            (d) to take any other action authorized to be taken by or on behalf
of the holders of any specified aggregate principal amount of such Debt
Securities under any other provision of this Indenture or under applicable law.

      SECTION 8.02. Call of Meetings by Trustee.

            The Trustee may at any time call a meeting of Securityholders to
take any action specified in Section 8.01, to be held at such time and at such
place in New York or Wilmington, Delaware, as the Trustee shall determine.
Notice of every meeting of the Securityholders, setting forth the time and the
place of such meeting and in general terms the action proposed to be taken at
such meeting, shall be mailed to holders of Debt Securities affected at their
addresses as they shall appear on the Debt Securities Register. Such notice
shall be mailed not less than 20 nor more than 180 days prior to the date fixed
for the meeting.

      SECTION 8.03. Call of Meetings by Company or Securityholders.

            In case at any time the Company pursuant to a Board Resolution, or
the holders of at least 10% in aggregate principal amount of the Debt
Securities, as the case may be, then outstanding, shall have requested the
Trustee to call a meeting of Securityholders, by written request setting forth
in reasonable detail the action proposed to be taken at the meeting, and the
Trustee shall not have mailed the notice of such meeting within 20 days after
receipt of such request, then the Company or such Securityholders may determine
the time and the place in for such meeting and may call such meeting to take any
action authorized in Section 8.01, by mailing notice thereof as provided in
Section 8.02.

                                      -44-
<PAGE>

      SECTION 8.04. Qualifications for Voting.

            To be entitled to vote at any meeting of Securityholders a Person
shall be (a) a holder of one or more Debt Securities with respect to which the
meeting is being held or (b) a Person appointed by an instrument in writing as
proxy by a holder of one or more such Debt Securities. The only Persons who
shall be entitled to be present or to speak at any meeting of Securityholders
shall be the Persons entitled to vote at such meeting and their counsel and any
representatives of the Trustee and its counsel and any representatives of the
Company and its counsel.

      SECTION 8.05. Regulations.

            Notwithstanding any other provisions of this Indenture, the Trustee
may make such reasonable regulations as it may deem advisable for any meeting of
Securityholders, in regard to proof of the holding of Debt Securities and of the
appointment of proxies, and in regard to the appointment and duties of
inspectors of votes, the submission and examination of proxies, certificates and
other evidence of the right to vote, and such other matters concerning the
conduct of the meeting as it shall deem appropriate.

            The Trustee shall, by an instrument in writing, appoint a temporary
chairman of the meeting, unless the meeting shall have been called by the
Company or by Securityholders as provided in Section 8.03, in which case the
Company or the Securityholders calling the meeting, as the case may be, shall in
like manner appoint a temporary chairman. A permanent chairman and a permanent
secretary of the meeting shall be elected by majority vote at the meeting.

            Subject to the provisions of Section 7.04, at any meeting each
holder of Debt Securities with respect to which such meeting is being held or
proxy therefor shall be entitled to one vote for each $1,000 principal amount of
Debt Securities held or represented by such holder; provided, however, that no
vote shall be cast or counted at any meeting in respect of any Debt Security
challenged as not outstanding and ruled by the chairman of the meeting to be not
outstanding. The chairman of the meeting shall have no right to vote other than
by virtue of Debt Securities held by such chairman or instruments in writing as
aforesaid duly designating such chairman as the Person to vote on behalf of
other Securityholders. Any meeting of Securityholders duly called pursuant to
the provisions of Section 8.02 or 8.03 may be adjourned from time to time by a
majority of those present, whether or not constituting a quorum, and the meeting
may be held as so adjourned without further notice.

      SECTION 8.06. Voting.

            The vote upon any resolution submitted to any meeting of holders of
Debt Securities with respect to which such meeting is being held shall be by
written ballots on which shall be subscribed the signatures of such holders or
of their representatives by proxy and the serial number or numbers of the Debt
Securities held or represented by them. The permanent chairman of the meeting
shall appoint two inspectors of votes who shall count all votes cast at the
meeting for or against any resolution and who shall make and file with the
secretary of the meeting their verified written reports in triplicate of all
votes cast at the meeting. A record in duplicate of the proceedings of each
meeting of Securityholders shall be prepared by the

                                      -45-
<PAGE>

secretary of the meeting and there shall be attached to said record the original
reports of the inspectors of votes on any vote by ballot taken thereat and
affidavits by one or more Persons having knowledge of the facts setting forth a
copy of the notice of the meeting and showing that said notice was mailed as
provided in Section 8.02. The record shall show the serial numbers of the Debt
Securities voting in favor of or against any resolution. The record shall be
signed and verified by the affidavits of the permanent chairman and secretary of
the meeting and one of the duplicates shall be delivered to the Company and the
other to the Trustee to be preserved by the Trustee, the latter to have attached
thereto the ballots voted at the meeting. Any record so signed and verified
shall be conclusive evidence of the matters therein stated.

      SECTION 8.07. Quorum; Actions.

            The Persons entitled to vote a majority in outstanding principal
amount of the Debt Securities shall constitute a quorum for a meeting of
Securityholders; provided, however, that if any action is to be taken at such
meeting with respect to a consent, waiver, request, demand, notice,
authorization, direction or other action which may be given by the holders of
not less than a specified percentage in outstanding principal amount of the Debt
Securities, the Persons holding or representing such specified percentage in
outstanding principal amount of the Debt Securities will constitute a quorum. In
the absence of a quorum within 30 minutes of the time appointed for any such
meeting, the meeting shall, if convened at the request of Securityholders, be
dissolved. In any other case the meeting may be adjourned for a period of not
less than 10 days as determined by the permanent chairman of the meeting prior
to the adjournment of such meeting. In the absence of a quorum at any such
adjourned meeting, such adjourned meeting may be further adjourned for a period
of not less than 10 days as determined by the permanent chairman of the meeting
prior to the adjournment of such adjourned meeting. Notice of the reconvening of
any adjourned meeting shall be given as provided in Section 8.02, except that
such notice need be given only once not less than five days prior to the date on
which the meeting is scheduled to be reconvened. Notice of the reconvening of an
adjourned meeting shall state expressly the percentage, as provided above, of
the outstanding principal amount of the Debt Securities which shall constitute a
quorum.

            Except as limited by the proviso in the first paragraph of Section
9.02, any resolution presented to a meeting or adjourned meeting duly reconvened
at which a quorum is present as aforesaid may be adopted by the affirmative vote
of the holders of not less than a majority in outstanding principal amount of
the Debt Securities; provided, however, that, except as limited by the proviso
in the first paragraph of Section 9.02, any resolution with respect to any
consent, waiver, request, demand, notice, authorization, direction or other
action that this Indenture expressly provides may be given by the holders of not
less than a specified percentage in outstanding principal amount of the Debt
Securities may be adopted at a meeting or an adjourned meeting duly reconvened
and at which a quorum is present as aforesaid only by the affirmative vote of
the holders of not less than such specified percentage in outstanding principal
amount of the Debt Securities.

            Any resolution passed or decision taken at any meeting of holders of
Debt Securities duly held in accordance with this Section shall be binding on
all the Securityholders, whether or not present or represented at the meeting.

                                      -46-
<PAGE>

      SECTION 8.08. Written Consent Without a Meeting.

            Whenever under this Indenture, Securityholders are required or
permitted to take any action by vote, such action may be taken without a meeting
on written consent, setting forth the action so taken, signed by the
Securityholders of all outstanding Debt Securities entitled to vote thereon. No
consent shall be effective to take the action referred to therein unless, within
sixty days of the earliest dated consent delivered in the manner required by
this paragraph to the Trustee, written consents signed by a sufficient number of
Securityholders to take action are delivered to the Trustee at its Principal
Office. Delivery made to the Trustee at its Principal Office, shall be by hand
or by certificated or registered mail, return receipt requested. Written consent
thus given by the Securityholders of such number of Debt Securities as is
required hereunder, shall have the same effect as a valid vote of
Securityholders of such number of Debt Securities.

                                   ARTICLE IX

                             SUPPLEMENTAL INDENTURES

      SECTION 9.01. Supplemental Indentures without Consent of Securityholders.

            The Company, when authorized by a Board Resolution, and the Trustee
may from time to time and at any time enter into an indenture or indentures
supplemental hereto, without the consent of the Securityholders, for one or more
of the following purposes:

            (a) to evidence the succession of another Person to the Company, or
successive successions, and the assumption by the successor Person of the
covenants, agreements and obligations of the Company, pursuant to Article XI
hereof;

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

            (c) to cure any ambiguity or to correct or supplement any provision
contained herein or in any supplemental indenture which may be defective or
inconsistent with any other provision contained herein or in any supplemental
indenture, or to make or amend such other provisions in regard to matters or
questions arising under this Indenture; provided, that any such action shall not
adversely affect the interests of the holders of the Debt Securities;

            (d) to add to, delete from, or revise the terms of Debt Securities,
including, without limitation, any terms relating to the issuance, exchange,
registration or transfer of Debt

                                      -47-
<PAGE>

Securities, including to provide for transfer procedures and restrictions
substantially similar to those applicable to the Capital Securities, as required
by Section 2.05 (for purposes of assuring that no registration of Debt
Securities is required under the Securities Act of 1933, as amended); provided,
that any such action shall not adversely affect the interests of the holders of
the Debt Securities then outstanding (it being understood, for purposes of this
proviso, that transfer restrictions on Debt Securities substantially similar to
those applicable to Capital Securities shall not be deemed to adversely affect
the holders of the Debt Securities);

            (e) to evidence and provide for the acceptance of appointment
hereunder by a successor Trustee with respect to the Debt Securities and to add
to or change any of the provisions of this Indenture as shall be necessary to
provide for or facilitate the administration of the trusts hereunder by more
than one Trustee, pursuant to the requirements of Section 6.10;

            (f) to make any change (other than as elsewhere provided in this
paragraph) that does not adversely affect the rights of any Securityholder in
any material respect; or

            (g) to provide for the issuance of and establish the form and terms
and conditions of the Debt Securities, to establish the form of any
certifications required to be furnished pursuant to the terms of this Indenture
or the Debt Securities, or to add to the rights of the holders of Debt
Securities.

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

            Any supplemental indenture authorized by the provisions of this
Section 9.01 may be executed by the Company and the Trustee without the consent
of the holders of any of the Debt Securities at the time outstanding,
notwithstanding any of the provisions of Section 9.02.

      SECTION 9.02. Supplemental Indentures with Consent of Securityholders.

            With the consent (evidenced as provided in Section 7.01) of the
holders of not less than a majority in aggregate principal amount of the Debt
Securities at the time outstanding affected by such supplemental indenture, the
Company, when authorized by a Board Resolution, and the Trustee may from time to
time and at any time enter into an indenture or indentures supplemental hereto
(which shall conform to the provisions of the Trust Indenture Act, then in
effect, applicable to indentures qualified thereunder) for the purpose of adding
any provisions to or changing in any manner or eliminating any of the provisions
of this Indenture or of any supplemental indenture or of modifying in any manner
the rights of the holders of the Debt Securities; provided, however, that no
such supplemental indenture shall without such consent of the holders of each
Debt Security then outstanding and affected thereby (i) extend the Maturity Date
of any Debt Security, or reduce the principal amount thereof or any premium
thereon, or reduce the rate (or manner of calculation of the rate) or extend the
time of payment of interest thereon, or reduce (other than as a result of the
maturity or earlier redemption of any such Debt

                                      -48-
<PAGE>

Security in accordance with the terms of this Indenture and such Debt Security)
or increase the aggregate principal amount of Debt Securities then outstanding,
or change any of the redemption provisions, or make the principal thereof or any
interest or premium thereon payable in any coin or currency other than United
States Dollars, or impair or affect the right of any Securityholder to institute
suit for payment thereof or impair the right of repayment, if any, at the option
of the holder, or (ii) reduce the aforesaid percentage of Debt Securities the
holders of which are required to consent to any such supplemental indenture; and
provided, further, that if the Debt Securities are held by the Trust or a
trustee of such trust, such supplemental indenture shall not be effective until
the holders of a majority in Liquidation Amount of the outstanding Capital
Securities shall have consented to such supplemental indenture; provided,
further, that if the consent of the Securityholder of each outstanding Debt
Security is required, such supplemental indenture shall not be effective until
each holder of the outstanding Capital Securities shall have consented to such
supplemental indenture.

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

            Promptly after the execution by the Company and the Trustee of any
supplemental indenture pursuant to the provisions of this Section, the Trustee
shall transmit by mail, first class postage prepaid, a notice, prepared by the
Company, setting forth in general terms the substance of such supplemental
indenture, to the Securityholders as their names and addresses appear upon the
Debt Security Register. Any failure of the Trustee to mail such notice, or any
defect therein, shall not, however, in any way impair or affect the validity of
any such supplemental indenture.

            It shall not be necessary for the consent of the Securityholders
under this Section 9.02 to approve the particular form of any proposed
supplemental indenture, but it shall be sufficient if such consent shall approve
the substance thereof.

      SECTION 9.03. Effect of Supplemental Indentures.

            Upon the execution of any supplemental indenture pursuant to the
provisions of this Article IX, this Indenture shall be and be deemed to be
modified and amended in accordance therewith and the respective rights,
limitations of rights, obligations, duties and immunities under this Indenture
of the Trustee, the Company and the holders of Debt Securities shall thereafter
be determined, exercised and enforced hereunder subject in all respects to such
modifications and amendments and all the terms and conditions of any such
supplemental indenture shall be and be deemed to be part of the terms and
conditions of this Indenture for any and all purposes.

                                      -49-
<PAGE>

      SECTION 9.04. Notation on Debt Securities.

            Debt Securities authenticated and delivered after the execution of
any supplemental indenture pursuant to the provisions of this Article IX may
bear a notation as to any matter provided for in such supplemental indenture. If
the Company or the Trustee shall so determine, new Debt Securities so modified
as to conform, in the opinion of the Board of Directors of the Company, to any
modification of this Indenture contained in any such supplemental indenture may
be prepared and executed by the Company, authenticated by the Trustee or the
Authenticating Agent and delivered in exchange for the Debt Securities then
outstanding.

      SECTION 9.05. Evidence of Compliance of Supplemental Indenture to be
furnished to Trustee.

            The Trustee, subject to the provisions of Sections 6.01 and 6.02,
shall, in addition to the documents required by Section 14.06, receive an
Officers' Certificate and an Opinion of Counsel as conclusive evidence that any
supplemental indenture executed pursuant hereto complies with the requirements
of this Article IX. The Trustee shall receive an Opinion of Counsel as
conclusive evidence that any supplemental indenture executed pursuant to this
Article IX is authorized or permitted by, and conforms to, the terms of this
Article IX and that it is proper for the Trustee under the provisions of this
Article IX to join in the execution thereof.

                                   ARTICLE X

                            REDEMPTION OF SECURITIES

      SECTION 10.01. Optional Redemption.

            At any time the Company shall have the right, subject to the receipt
by the Company of prior approval from any regulatory authority with jurisdiction
over the Company if such approval is then required under applicable capital
guidelines or policies of such regulatory authority, to redeem the Debt
Securities, in whole or (provided that all accrued and unpaid interest has been
paid on all Debt Securities for all Interest Periods terminating on or prior to
such date) from time to time in part, on any January 7, April 7, July 7 or
October 7 on or after October 7, 2009 (the "Redemption Date"), at the Redemption
Price.

      SECTION 10.02. Special Event Redemption.

            If a Special Event shall occur and be continuing, the Company shall
have the right, subject to the receipt by the Company of prior approval from any
regulatory authority with jurisdiction over the Company if such approval is then
required under applicable capital guidelines or policies of such regulatory
authority, to redeem the Debt Securities, in whole or in part, at any time
within 90 days following the occurrence of such Special Event (the "Special
Redemption Date"), at the Special Redemption Price.

                                      -50-
<PAGE>

      SECTION 10.03. Notice of Redemption; Selection of Debt Securities.

            In case the Company shall desire to exercise the right to redeem
all, or, as the case may be, any part of the Debt Securities, it shall fix a
date for redemption and shall mail, or cause the Trustee to mail (at the expense
of the Company) a notice of such redemption at least 30 and not more than 60
days prior to the date fixed for redemption to the holders of Debt Securities so
to be redeemed as a whole or in part at their last addresses as the same appear
on the Debt Security Register. Such mailing shall be by first class mail. The
notice if mailed in the manner herein provided shall be conclusively presumed to
have been duly given, whether or not the holder receives such notice. In any
case, failure to give such notice by mail or any defect in the notice to the
holder of any Debt Security designated for redemption as a whole or in part
shall not affect the validity of the proceedings for the redemption of any other
Debt Security.

            Each such notice of redemption shall specify the CUSIP number, if
any, of the Debt Securities to be redeemed, the date fixed for redemption, the
redemption price (or manner of calculation of the price) at which Debt
Securities are to be redeemed, the place or places of payment, that payment will
be made upon presentation and surrender of such Debt Securities, that interest
accrued to the date fixed for redemption will be paid as specified in said
notice, and that on and after said date interest thereon or on the portions
thereof to be redeemed will cease to accrue. If less than all the Debt
Securities are to be redeemed the notice of redemption shall specify the numbers
of the Debt Securities to be redeemed. In case the Debt Securities are to be
redeemed in part only, the notice of redemption shall state the portion of the
principal amount thereof to be redeemed and shall state that on and after the
date fixed for redemption, upon surrender of such Debt Security, a new Debt
Security or Debt Securities in principal amount equal to the unredeemed portion
thereof will be issued.

            Prior to 10:00 a.m. New York City time on the Redemption Date or the
Special Redemption Date specified in the notice of redemption given as provided
in this Section, the Company will deposit with the Trustee or with one or more
Paying Agents an amount of money sufficient to redeem on the redemption date all
the Debt Securities so called for redemption at the appropriate redemption
price, together with unpaid interest accrued to such date.

            The Company will give the Trustee notice not less than 45 nor more
than 60 days prior to the redemption date as to the redemption price at which
the Debt Securities are to be redeemed and the aggregate principal amount of
Debt Securities to be redeemed and the Trustee shall select, in such manner as
in its sole discretion it shall deem appropriate and fair, the Debt Securities
or portions thereof (in integral multiples of $1,000) to be redeemed.

      SECTION 10.04. Payment of Debt Securities Called for Redemption.

            If notice of redemption has been given as provided in Section 10.03,
the Debt Securities or portions of Debt Securities with respect to which such
notice has been given shall become due and payable on the Redemption Date or the
Special Redemption Date (as the case may be) and at the place or places stated
in such notice at the applicable redemption price, together with interest
accrued to the date fixed for redemption, and on and after said Redemption Date
or the Special Redemption Date (unless the Company shall default in the payment
of such Debt Securities at the redemption price, together with unpaid interest
accrued thereon to said

                                      -51-
<PAGE>

date) interest on the Debt Securities or portions of Debt Securities so called
for redemption shall cease to accrue. On presentation and surrender of such Debt
Securities at a place of payment specified in said notice, such Debt Securities
or the specified portions thereof shall be paid and redeemed by the Company at
the applicable redemption price, together with unpaid interest accrued thereon
to the Redemption Date or the Special Redemption Date (as the case may be).

            Upon presentation of any Debt Security redeemed in part only, the
Company shall execute and the Trustee shall authenticate and make available for
delivery to the holder thereof, at the expense of the Company, a new Debt
Security or Debt Securities of authorized denominations in principal amount
equal to the unredeemed portion of the Debt Security so presented.

                                   ARTICLE XI

                CONSOLIDATION, MERGER, SALE, CONVEYANCE AND LEASE

      SECTION 11.01. Company May Consolidate, etc., on Certain Terms.

            Nothing contained in this Indenture or in the Debt Securities shall
prevent any consolidation or merger of the Company with or into any other
corporation or corporations (whether or not affiliated with the Company) or
successive consolidations or mergers in which the Company or its successor or
successors shall be a party or parties, or shall prevent any sale, conveyance,
transfer or other disposition of all or substantially all of the property or
capital stock of the Company or its successor or successors, to any other
corporation (whether or not affiliated with the Company, or its successor or
successors) authorized to acquire and operate the same; provided, however, that
the Company hereby covenants and agrees that, upon any such consolidation,
merger (where the Company is not the surviving corporation), sale, conveyance,
transfer or other disposition, the successor entity shall be a corporation
organized and existing under the laws of the United States or any state thereof
or the District of Columbia (unless such corporation has (1) agreed to make all
payments due in respect of the Debt Securities or, if outstanding, the Capital
Securities and Capital Securities Guarantee without withholding or deduction
for, or on account of, any taxes, duties, assessments or other governmental
charges under the laws or regulations of the jurisdiction of organization or
residence (for tax purposes) of such corporation or any political subdivision or
taxing authority thereof or therein unless required by applicable law, in which
case such corporation shall have agreed to pay such additional amounts as shall
be required so that the net amounts received and retained by the holders of such
Debt Securities or Capital 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, (2) irrevocably and unconditionally
consented and submitted to the jurisdiction of any United States federal court
or New York state court, in each case located in The City of New York, Borough
of Manhattan, in respect of any action, suit or proceeding against it arising
out of or in connection with this Indenture, the Debt Securities, the Capital
Securities Guarantee or the Declaration and irrevocably and unconditionally
waived, to the fullest extent permitted by law, any objection to the laying of
venue in any such court or that any such action, suit or proceeding has been
brought in an inconvenient forum and (3) irrevocably appointed an agent in The
City of

                                      -52-
<PAGE>

New York for service of process in any action, suit or proceeding referred to in
clause (2) above) and such corporation expressly assumes all of the obligations
of the Company under the Debt Securities, this Indenture, the Capital Securities
Guarantee and the Declaration and (ii) after giving effect to any such
consolidation, merger, sale, conveyance, transfer or other disposition, no
Default or Event of Default shall have occurred and be continuing.

      SECTION 11.02. Successor Entity to be Substituted.

            In case of any such consolidation, merger, sale, conveyance,
transfer or other disposition contemplated in Section 11.01 and upon the
assumption by the successor entity, by supplemental indenture, executed and
delivered to the Trustee and reasonably satisfactory in form to the Trustee, of
the due and punctual payment of the principal of and premium, if any, and
interest on all of the Debt Securities and the due and punctual performance and
observance of all of the covenants and conditions of this Indenture to be
performed or observed by the Company, such successor entity shall succeed to and
be substituted for the Company, with the same effect as if it had been named
herein as the Company, and thereupon the predecessor entity shall be relieved of
any further liability or obligation hereunder or upon the Debt Securities. Such
successor entity thereupon may cause to be signed, and may issue either in its
own name or in the name of the Company, any or all of the Debt Securities
issuable hereunder which theretofore shall not have been signed by the Company
and delivered to the Trustee or the Authenticating Agent; and, upon the order of
such successor entity instead of the Company and subject to all the terms,
conditions and limitations in this Indenture prescribed, the Trustee or the
Authenticating Agent shall authenticate and deliver any Debt Securities which
previously shall have been signed and delivered by the officers of the Company,
to the Trustee or the Authenticating Agent for authentication, and any Debt
Securities which such successor entity thereafter shall cause to be signed and
delivered to the Trustee or the Authenticating Agent for that purpose. All the
Debt Securities so issued shall in all respects have the same legal rank and
benefit under this Indenture as the Debt Securities theretofore or thereafter
issued in accordance with the terms of this Indenture as though all of such Debt
Securities had been issued at the date of the execution hereof.

      SECTION 11.03. Opinion of Counsel to be Given to Trustee.

            The Trustee, subject to the provisions of Sections 6.01 and 6.02,
shall receive, in addition to the Opinion of Counsel required by Section 9.05,
an Opinion of Counsel as conclusive evidence that any consolidation, merger,
sale, conveyance, transfer or other disposition, and any assumption, permitted
or required by the terms of this Article XI complies with the provisions of this
Article XI.

                                   ARTICLE XII

                     SATISFACTION AND DISCHARGE OF INDENTURE

      SECTION 12.01. Discharge of Indenture.

            When (a) the Company shall deliver to the Trustee for cancellation
all Debt Securities theretofore authenticated (other than any Debt Securities
which shall have been

                                      -53-
<PAGE>

destroyed, lost or stolen and which shall have been replaced or paid as provided
in Section 2.06) and not theretofore canceled, or (b) all the Debt Securities
not theretofore canceled or delivered to the Trustee for cancellation shall have
become due and payable, or are by their terms to become due and payable within
one year or are to be called for redemption within one year under arrangements
satisfactory to the Trustee for the giving of notice of redemption, and the
Company shall deposit with the Trustee, in trust, funds, which shall be
immediately due and payable, sufficient to pay at maturity or upon redemption
all of the Debt Securities (other than any Debt Securities which shall have been
destroyed, lost or stolen and which shall have been replaced or paid as provided
in Section 2.06) not theretofore canceled or delivered to the Trustee for
cancellation, including principal and premium, if any, and interest due or to
become due to such date of maturity or redemption date, as the case may be, but
excluding, however, the amount of any moneys for the payment of principal of,
and premium, if any, or interest on the Debt Securities (1) theretofore repaid
to the Company in accordance with the provisions of Section 12.04, or (2) paid
to any state or to the District of Columbia pursuant to its unclaimed property
or similar laws, and if in the case of either clause (a) or clause (b) the
Company shall also pay or cause to be paid all other sums payable hereunder by
the Company, then this Indenture shall cease to be of further effect except for
the provisions of Sections 2.05, 2.06, 3.01, 3.02, 3.04, 6.06, 6.09 and 12.04
hereof, which shall survive until such Debt Securities shall mature or are
redeemed, as the case may be, and are paid in full. Thereafter, Sections 6.06,
6.09 and 12.04 shall survive, and the Trustee, on demand of the Company
accompanied by an Officers' Certificate and an Opinion of Counsel, each stating
that all conditions precedent herein provided for relating to the satisfaction
and discharge of this Indenture have been complied with, and at the cost and
expense of the Company, shall execute proper instruments acknowledging
satisfaction of and discharging this Indenture, the Company, however, hereby
agreeing to reimburse the Trustee for any costs or expenses thereafter
reasonably and properly incurred by the Trustee in connection with this
Indenture or the Debt Securities.

      SECTION 12.02. Deposited Moneys to be Held in Trust by Trustee.

            Subject to the provisions of Section 12.04, all moneys deposited
with the Trustee pursuant to Section 12.01 shall be held in trust and applied by
it to the payment, either directly or through any Paying Agent (including the
Company if acting as its own Paying Agent), to the holders of the particular
Debt Securities for the payment of which such moneys have been deposited with
the Trustee, of all sums due and to become due thereon for principal, and
premium, if any, and interest.

      SECTION 12.03. Paying Agent to Repay Moneys Held.

            Upon the satisfaction and discharge of this Indenture, all moneys
then held by any Paying Agent of the Debt Securities (other than the Trustee)
shall, upon demand of the Company, be repaid to the Company or paid to the
Trustee, and thereupon such Paying Agent shall be released from all further
liability with respect to such moneys.

      SECTION 12.04. Return of Unclaimed Moneys.

            Any moneys deposited with or paid to the Trustee or any Paying Agent
for payment of the principal of, and premium, if any, or interest on Debt
Securities and not applied

                                      -54-
<PAGE>

but remaining unclaimed by the holders of Debt Securities for two years after
the date upon which the principal of, and premium, if any, or interest on such
Debt Securities, as the case may be, shall have become due and payable, shall be
repaid to the Company by the Trustee or such Paying Agent on written demand; and
the holder of any of the Debt Securities shall thereafter look only to the
Company for any payment which such holder may be entitled to collect and all
liability of the Trustee or such Paying Agent with respect to such moneys shall
thereupon cease.

                                  ARTICLE XIII

         IMMUNITY OF INCORPORATORS, STOCKHOLDERS, OFFICERS AND DIRECTORS

      SECTION 13.01. Indenture and Debt Securities Solely Corporate Obligations.

            No recourse for the payment of the principal of or premium, if any,
or interest on any Debt Security, or for any claim based thereon or otherwise in
respect thereof, and no recourse under or upon any obligation, covenant or
agreement of the Company in this Indenture or in any supplemental indenture, or
in any such Debt Security, or because of the creation of any indebtedness
represented thereby, shall be had against any incorporator, stockholder,
officer, director, employee or agent, as such, past, present or future, of the
Company or of any predecessor or successor corporation of the Company, either
directly or through the Company or any successor corporation of the Company,
whether by virtue of any constitution, statute or rule of law, or by the
enforcement of any assessment or penalty or otherwise; it being expressly
understood that all such liability is hereby expressly waived and released as a
condition of, and as a consideration for, the execution of this Indenture and
the issue of the Debt Securities.

                                  ARTICLE XIV

                            MISCELLANEOUS PROVISIONS

      SECTION 14.01. Successors.

            All the covenants, stipulations, promises and agreements of the
Company contained in this Indenture shall bind its successors and assigns
whether so expressed or not.

      SECTION 14.02. Official Acts by Successor Entity.

            Any act or proceeding by any provision of this Indenture authorized
or required to be done or performed by any board, committee or officer of the
Company shall and may be done and performed with like force and effect by the
like board, committee, officer or other authorized Person of any entity that
shall at the time be the lawful successor of the Company.

      SECTION 14.03. Surrender of Company Powers.

            The Company by instrument in writing executed by authority of 2/3
(two-thirds) of its Board of Directors and delivered to the Trustee may
surrender any of the powers reserved to the Company and thereupon such power so
surrendered shall terminate both as to the Company and as to any permitted
successor.

                                      -55-
<PAGE>

      SECTION 14.04. Addresses for Notices, etc.

            Any notice or demand which by any provision of this Indenture is
required or permitted to be given or served by the Trustee or by the
Securityholders on the Company may be given or served in writing by being
deposited postage prepaid by registered or certified mail in a post office
letter box addressed (until another address is filed by the Company with the
Trustee for such purpose) to the Company at:

                     Southwest Bancorporation of Texas, Inc.
                              4400 Post Oak Parkway
                              Houston, Texas 77027
                           Attention: Randall E. Meyer

            Any notice, direction, request or demand by any Securityholder or
the Company to or upon the Trustee shall be deemed to have been sufficiently
given or made, for all purposes, if given or made in writing at the office of
Wells Fargo Bank, National Association at:

                                919 Market Street
                                    Suite 700
                              Wilmington, DE 19801
                       Attention: Corporate Trust Division

      SECTION 14.05. Governing Law.

            This Indenture and each Debt Security shall be deemed to be a
contract made under the law of the State of New York, and for all purposes shall
be governed by and construed in accordance with the law of said State, without
regard to conflict of laws principles of said State other than Section 5 1401 of
the New York General Obligations Law.

      SECTION 14.06. Evidence of Compliance with Conditions Precedent.

            Upon any application or demand by the Company to the Trustee to take
any action under any of the provisions of this Indenture, the Company shall
furnish to the Trustee an Officers' Certificate stating that in the opinion of
the signers all conditions precedent, if any, provided for in this Indenture
relating to the proposed action have been complied with and an Opinion of
Counsel stating that, in the opinion of such counsel, all such conditions
precedent have been complied with (except that no such Opinion of Counsel is
required to be furnished to the Trustee in connection with the authentication
and issuance of Debt Securities issued on the date of this Indenture).

            Each certificate or opinion provided for in this Indenture and
delivered to the Trustee with respect to compliance with a condition or covenant
provided for in this Indenture (except certificates delivered pursuant to
Section 3.05) shall include (a) a statement that the person making such
certificate or opinion has read such covenant or condition; (b) a brief
statement as to the nature and scope of the examination or investigation upon
which the statements or opinions contained in such certificate or opinion are
based; (c) a statement that, in the opinion of such person, he or she has made
such examination or investigation as is necessary to enable him or her to
express an informed opinion as to whether or not such covenant or

                                      -56-
<PAGE>

condition has been complied with; and (d) a statement as to whether or not, in
the opinion of such person, such condition or covenant has been complied with.

      SECTION 14.07. Non-Business Days.

            Notwithstanding anything to the contrary contained herein, if any
Interest Payment Date, other than on the Maturity Date, any Redemption Date or
the Special Redemption Date, falls on a day that is not a Business Day, then any
interest payable will be paid on, and such Interest Payment Date will be moved
to, the next succeeding Business Day, and additional interest will accrue for
each day that such payment is delayed as a result thereof. If the Maturity Date,
any Redemption Date or the Special Redemption Date falls on a day that is not a
Business Day, then the principal, premium, if any, and/or interest payable on
such date will be paid on the next preceding Business Day.

      SECTION 14.08. Table of Contents, Headings, etc.

            The table of contents and the titles 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.

      SECTION 14.09. Execution in Counterparts.

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

      SECTION 14.10. Severability.

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

      SECTION 14.11. Assignment.

            Subject to Article XI, the Company will have the right at all times
to assign any of its rights or obligations under this Indenture to a direct or
indirect wholly owned Subsidiary of the Company, provided, however, that, in the
event of any such assignment, the Company will remain liable for all such
obligations. Subject to the foregoing, this Indenture is binding upon and inures
to the benefit of the parties hereto and their respective successors and
assigns. This Indenture may not otherwise be assigned by the parties thereto.

      SECTION 14.12. Acknowledgment of Rights.

            The Company acknowledges that, with respect to any Debt Securities
held by the Trust or the Institutional Trustee of the Trust, if the
Institutional Trustee of the Trust fails to

                                      -57-
<PAGE>

enforce its rights under this Indenture as the holder of Debt Securities held as
the assets of the Trust after the holders of a majority in Liquidation Amount of
the Capital Securities of the Trust have so directed in writing such
Institutional Trustee, a holder of record of such Capital Securities may to the
fullest extent permitted by law institute legal proceedings directly against the
Company to enforce such Institutional Trustee's rights under this Indenture
without first instituting any legal proceedings against such Institutional
Trustee or any other Person. Notwithstanding the foregoing, if an Event of
Default has occurred and is continuing and such event is attributable to the
failure of the Company to pay interest (or premium, if any) or principal on the
Debt Securities on the date such interest (or premium, if any) or principal is
otherwise due and payable (or in the case of redemption, on the redemption
date), the Company acknowledges that a holder of record of Capital Securities of
the Trust may directly institute a proceeding against the Company for
enforcement of payment to such holder directly of the principal of (or premium,
if any) or interest on the Debt Securities having an aggregate principal amount
equal to the aggregate Liquidation Amount of the Capital Securities of such
holder on or after the respective due date specified in the Debt Securities.

                                   ARTICLE XV

                        SUBORDINATION OF DEBT SECURITIES

      SECTION 15.01. Agreement to Subordinate.

            The Company covenants and agrees, and each holder of Debt Securities
issued hereunder and under any supplemental indenture (the "Additional
Provisions") by such Securityholder's acceptance thereof likewise covenants and
agrees, that all Debt Securities shall be issued subject to the provisions of
this Article XV; and each holder of a Debt Security, whether upon original issue
or upon transfer or assignment thereof, accepts and agrees to be bound by such
provisions.

            The payment by the Company of the payments due on all Debt
Securities issued hereunder and under any Additional Provisions shall, to the
extent and in the manner hereinafter set forth, be subordinated and junior in
right of payment to the prior payment in full of all Senior Indebtedness of the
Company, whether outstanding at the date of this Indenture or thereafter
incurred.

            For the avoidance of doubt, the Subordinated Debenture in the amount
of $75,000,000, issued pursuant to a Subordinated Debenture Purchase Agreement
dated September 22, 2004, shall be considered "Senior Indebtedness" for all
purposes hereunder.

            No provision of this Article XV shall prevent the occurrence of any
Default or Event of Default hereunder.

      SECTION 15.02. Default on Senior Indebtedness.

            In the event and during the continuation of any default by the
Company in the payment of principal, premium, interest or any other payment due
on any Senior Indebtedness of the Company following any applicable grace period,
or in the event that the maturity of any Senior Indebtedness of the Company has
been accelerated because of a default, and such

                                      -58-
<PAGE>

acceleration has not been rescinded or canceled and such Senior Indebtedness has
not been paid in full, then, in either case, no payment shall be made by the
Company with respect to the payments due on the Debt Securities.

            In the event that, notwithstanding the foregoing, any payment shall
be received by the Trustee when such payment is prohibited by the preceding
paragraph of this Section 15.02, such payment shall, subject to Section 15.06,
be held in trust for the benefit of, and shall be paid over or delivered to, the
holders of Senior Indebtedness or their respective representatives, or to the
trustee or trustees under any indenture pursuant to which any of such Senior
Indebtedness may have been issued, as their respective interests may appear, but
only to the extent that the holders of the Senior Indebtedness (or their
representative or representatives or a trustee) notify the Trustee in writing
within 90 days of such payment of the amounts then due and owing on the Senior
Indebtedness and only the amounts specified in such notice to the Trustee shall
be paid to the holders of Senior Indebtedness.

      SECTION 15.03. Liquidation; Dissolution; Bankruptcy.

            Upon any payment by the Company or distribution of assets of the
Company of any kind or character, whether in cash, property or securities, to
creditors upon any dissolution or winding- up or liquidation or reorganization
of the Company, whether voluntary or involuntary or in bankruptcy, insolvency,
receivership or other proceedings, all amounts due upon all Senior Indebtedness
of the Company shall first be paid in full, or payment thereof provided for in
money in accordance with its terms, before any payment is made by the Company on
the Debt Securities; and upon any such dissolution or winding-up or liquidation
or reorganization, any payment by the Company, or distribution of assets of the
Company of any kind or character, whether in cash, property or securities, to
which the Securityholders or the Trustee would be entitled to receive from the
Company, except for the provisions of this Article XV, shall be paid by the
Company, or by any receiver, trustee in bankruptcy, liquidating trustee, agent
or other Person making such payment or distribution, or by the Securityholders
or by the Trustee under this Indenture if received by them or it, directly to
the holders of Senior Indebtedness of the Company (pro rata to such holders on
the basis of the respective amounts of Senior Indebtedness held by such holders,
as calculated by the Company) or their representative or representatives, or to
the trustee or trustees under any indenture pursuant to which any instruments
evidencing such Senior Indebtedness may have been issued, as their respective
interests may appear, to the extent necessary to pay such Senior Indebtedness in
full, in money or money's worth, after giving effect to any concurrent payment
or distribution to or for the holders of such Senior Indebtedness, before any
payment or distribution is made to the Securityholders.

            In the event that, notwithstanding the foregoing, any payment or
distribution of assets of the Company of any kind or character, whether in cash,
property or securities, prohibited by the foregoing, shall be received by the
Trustee before all Senior Indebtedness of the Company is paid in full, or
provision is made for such payment in money in accordance with its terms, such
payment or distribution shall be held in trust for the benefit of and shall be
paid over or delivered to the holders of such Senior Indebtedness or their
representative or representatives, or to the trustee or trustees under any
indenture pursuant to which any instruments evidencing such Senior Indebtedness
may have been issued, as their respective interests may appear, as calculated by
the Company, for application to the payment of all Senior

                                      -59-
<PAGE>

Indebtedness of the Company remaining unpaid to the extent necessary to pay such
Senior Indebtedness in full in money in accordance with its terms, after giving
effect to any concurrent payment or distribution to or for the benefit of the
holders of such Senior Indebtedness.

            For purposes of this Article XV, the words "cash, property or
securities" shall not be deemed to include shares of stock of the Company as
reorganized or readjusted, or securities of the Company or any other corporation
provided for by a plan of reorganization or readjustment, the payment of which
is subordinated at least to the extent provided in this Article XV with respect
to the Debt Securities to the payment of all Senior Indebtedness of the Company,
that may at the time be outstanding, provided, that (a) such Senior Indebtedness
is assumed by the new corporation, if any, resulting from any such
reorganization or readjustment, and (b) the rights of the holders of such Senior
Indebtedness are not, without the consent of such holders, altered by such
reorganization or readjustment. The consolidation of the Company with, or the
merger of the Company into, another corporation or the liquidation or
dissolution of the Company following the conveyance or transfer or other
disposition of its property as an entirety, or substantially as an entirety, to
another corporation upon the terms and conditions provided for in Article XI of
this Indenture shall not be deemed a dissolution, winding-up, liquidation or
reorganization for the purposes of this Section 15.03 if such other corporation
shall, as a part of such consolidation, merger, conveyance or transfer, comply
with the conditions stated in Article XI of this Indenture. Nothing in Section
15.02 or in this Section 15.03 shall apply to claims of, or payments to, the
Trustee under or pursuant to Section 6.06 of this Indenture.

      SECTION 15.04. Subrogation.

            Subject to the payment in full of all Senior Indebtedness of the
Company, the Securityholders shall be subrogated to the rights of the holders of
such Senior Indebtedness to receive payments or distributions of cash, property
or securities of the Company applicable to such Senior Indebtedness until all
payments due on the Debt Securities shall be paid in full; and, for the purposes
of such subrogation, no payments or distributions to the holders of such Senior
Indebtedness of any cash, property or securities to which the Securityholders or
the Trustee would be entitled except for the provisions of this Article XV, and
no payment over pursuant to the provisions of this Article XV to or for the
benefit of the holders of such Senior Indebtedness by Securityholders or the
Trustee, shall, as between the Company, its creditors other than holders of
Senior Indebtedness of the Company, and the holders of the Debt Securities be
deemed to be a payment or distribution by the Company to or on account of such
Senior Indebtedness. It is understood that the provisions of this Article XV are
and are intended solely for the purposes of defining the relative rights of the
holders of the Debt Securities, on the one hand, and the holders of such Senior
Indebtedness, on the other hand.

            Nothing contained in this Article XV or elsewhere in this Indenture,
any Additional Provisions or in the Debt Securities is intended to or shall
impair, as between the Company, its creditors other than the holders of Senior
Indebtedness of the Company, and the holders of the Debt Securities, the
obligation of the Company, which is absolute and unconditional, to pay to the
holders of the Debt Securities all payments on the 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 the holders of the Debt
Securities and creditors of the Company, other than the holders of Senior
Indebtedness of the Company, nor shall anything

                                      -60-
<PAGE>

herein or therein prevent the Trustee or the holder of any Debt Security from
exercising all remedies otherwise permitted by applicable law upon default under
this Indenture, subject to the rights, if any, under this Article XV 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.

            Upon any payment or distribution of assets of the Company referred
to in this Article XV, the Trustee, subject to the provisions of Article VI of
this Indenture, and the Securityholders shall be entitled to conclusively rely
upon any order or decree made by any court of competent jurisdiction in which
such dissolution, winding-up, liquidation or reorganization proceedings are
pending, or a certificate of the receiver, trustee in bankruptcy, liquidation
trustee, agent or other Person making such payment or distribution, delivered to
the Trustee or to the Securityholders, for the purposes of ascertaining the
Persons entitled to participate in such distribution, the holders of Senior
Indebtedness and other 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 XV.

      SECTION 15.05. Trustee to Effectuate Subordination.

            Each Securityholder by such Securityholder's acceptance thereof
authorizes and directs the Trustee on such Securityholder's behalf to take such
action as may be necessary or appropriate to effectuate the subordination
provided in this Article XV and appoints the Trustee such Securityholder's
attorney-in-fact for any and all such purposes.

      SECTION 15.06. Notice by the Company.

            The Company shall give prompt written notice to a Responsible
Officer of the Trustee at the Principal Office of the Trustee of any fact known
to the Company that would prohibit the making of any payment of moneys to or by
the Trustee in respect of the Debt Securities pursuant to the provisions of this
Article XV. Notwithstanding the provisions of this Article XV or any other
provision of this Indenture or any Additional Provisions, the Trustee shall not
be charged with knowledge of the existence of any facts that would prohibit the
making of any payment of moneys to or by the Trustee in respect of the Debt
Securities pursuant to the provisions of this Article XV, unless and until a
Responsible Officer of the Trustee at the Principal Office of the Trustee shall
have received written notice thereof from the Company or a holder or holders of
Senior Indebtedness or from any trustee therefor; and before the receipt of any
such written notice, the Trustee, subject to the provisions of Article VI of
this Indenture, shall be entitled in all respects to assume that no such facts
exist; provided, however, that if the Trustee shall not have received the notice
provided for in this Section 15.06 at least two Business Days prior to the date
upon which by the terms hereof any money may become payable for any purpose
(including, without limitation, the payment of the principal of (or premium, if
any) or interest on any Debt Security), then, anything herein contained to the
contrary notwithstanding, the Trustee shall have full power and authority to
receive such money and to apply the same to the purposes for which they were
received, and shall not be affected by any notice to the contrary that may be
received by it within two Business Days prior to such date.

            The Trustee, subject to the provisions of Article VI of this
Indenture, shall be entitled to conclusively rely on the delivery to it of a
written notice by a Person representing

                                      -61-
<PAGE>

himself or herself to be a holder of Senior Indebtedness of the Company (or a
trustee or representative on behalf of such holder) to establish that such
notice has been given by a holder of such Senior Indebtedness or a trustee or
representative on behalf of any such holder or holders. In the event that the
Trustee determines in good faith that further evidence is required with respect
to the right of any Person as a holder of such Senior Indebtedness to
participate in any payment or distribution pursuant to this Article XV, the
Trustee may request such Person to furnish evidence to the reasonable
satisfaction of the Trustee as to the amount of such Senior Indebtedness held by
such Person, the extent to which such Person is entitled to participate in such
payment or distribution and any other facts pertinent to the rights of such
Person under this Article XV, and, if such evidence is not furnished, the
Trustee may defer any payment to such Person pending judicial determination as
to the right of such Person to receive such payment.

      SECTION 15.07. Rights of the Trustee, Holders of Senior Indebtedness.

            The Trustee in its individual capacity shall be entitled to all the
rights set forth in this Article XV in respect of any Senior Indebtedness at any
time held by it, to the same extent as any other holder of Senior Indebtedness,
and nothing in this Indenture or any Additional Provisions shall deprive the
Trustee of any of its rights as such holder.

            With respect to the holders of Senior Indebtedness of the Company,
the Trustee undertakes to perform or to observe only such of its covenants and
obligations as are specifically set forth in this Article XV, and no implied
covenants or obligations with respect to the holders of such Senior Indebtedness
shall be read into this Indenture or any Additional Provisions against the
Trustee. The Trustee shall not owe or be deemed to owe any fiduciary duty to the
holders of such Senior Indebtedness and, subject to the provisions of Article VI
of this Indenture, the Trustee shall not be liable to any holder of such Senior
Indebtedness if it shall pay over or deliver to Securityholders, the Company or
any other Person money or assets to which any holder of such Senior Indebtedness
shall be entitled by virtue of this Article XV or otherwise.

            Nothing in this Article XV shall apply to claims of, or payments to,
the Trustee under or pursuant to Section 6.06.

      SECTION 15.08. Subordination May Not Be Impaired.

            No right of any present or future holder of any Senior Indebtedness
of the Company to enforce subordination as herein provided shall at any time in
any way be prejudiced or impaired by any act or failure to act on the part of
the Company, or by any act or failure to act, in good faith, by any such holder,
or by any noncompliance by the Company, with the terms, provisions and covenants
of this Indenture, regardless of any knowledge thereof that any such holder may
have or otherwise be charged with.

            Without in any way limiting the generality of the foregoing
paragraph, the holders of Senior Indebtedness of the Company may, at any time
and from time to time, without the consent of or notice to the Trustee or the
Securityholders, without incurring responsibility to the Securityholders and
without impairing or releasing the subordination provided in this Article XV or
the obligations hereunder of the holders of the Debt Securities to the holders
of such Senior Indebtedness, do any one or more of the following: (a) change the
manner, place or terms of

                                      -62-
<PAGE>

payment or extend the time of payment of, or renew or alter, such Senior
Indebtedness, or otherwise amend or supplement in any manner such Senior
Indebtedness or any instrument evidencing the same or any agreement under which
such Senior Indebtedness is outstanding; (b) sell, exchange, release or
otherwise deal with any property pledged, mortgaged or otherwise securing such
Senior Indebtedness; (c) release any Person liable in any manner for the
collection of such Senior Indebtedness; and (d) exercise or refrain from
exercising any rights against the Company, and any other Person.

            Wells Fargo Bank, National Association, in its capacity as Trustee,
hereby accepts the trusts in this Indenture declared and provided, upon the
terms and conditions herein above set forth.

                                      -63-
<PAGE>

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

                                     SOUTHWEST BANCORPORATION OF TEXAS, INC.

                                     By:________________________________________
                                     Name:______________________________________
                                     Title:_____________________________________

                                     WELLS FARGO BANK, NATIONAL ASSOCIATION, AS
                                     TRUSTEE

                                     By:________________________________________
                                     Name:______________________________________
                                     Title:_____________________________________

                                      -63-
<PAGE>

                                    EXHIBIT A

                    FORM OF JUNIOR SUBORDINATED DEBT SECURITY
                                    DUE 2034

                           [FORM OF FACE OF SECURITY]

            THIS SECURITY HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF
1933, AS AMENDED (THE "SECURITIES ACT"), OR ANY STATE SECURITIES LAWS OR ANY
OTHER APPLICABLE SECURITIES LAWS. NEITHER THIS SECURITY NOR ANY INTEREST OR
PARTICIPATION HEREIN MAY BE REOFFERED, SOLD, ASSIGNED, TRANSFERRED, PLEDGED,
ENCUMBERED OR OTHERWISE DISPOSED OF IN THE ABSENCE OF SUCH REGISTRATION OR
UNLESS SUCH TRANSACTION IS EXEMPT FROM, OR NOT SUBJECT TO, THE REGISTRATION
REQUIREMENTS OF THE SECURITIES ACT. THE HOLDER OF THIS SECURITY BY ITS
ACCEPTANCE HEREOF AGREES TO OFFER, SELL OR OTHERWISE TRANSFER SUCH SECURITY ONLY
(A) TO THE COMPANY, (B) PURSUANT TO RULE 144A UNDER THE SECURITIES ACT ("RULE
144A"), TO A PERSON THE HOLDER REASONABLY BELIEVES IS A "QUALIFIED INSTITUTIONAL
BUYER" AS DEFINED IN RULE 144A THAT PURCHASES FOR ITS OWN ACCOUNT OR FOR THE
ACCOUNT OF A QUALIFIED INSTITUTIONAL BUYER TO WHOM NOTICE IS GIVEN THAT THE
TRANSFER IS BEING MADE IN RELIANCE ON RULE 144A, (C) PURSUANT TO AN EXEMPTION
FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT TO AN "ACCREDITED
INVESTOR" WITHIN THE MEANING OF SUBPARAGRAPH (a) (1), (2), (3) OR (7) OF RULE
501 UNDER THE SECURITIES ACT THAT IS ACQUIRING THE SECURITY FOR ITS OWN ACCOUNT,
OR FOR THE ACCOUNT OF SUCH AN "ACCREDITED INVESTOR," FOR INVESTMENT PURPOSES AND
NOT WITH A VIEW TO, OR FOR OFFER OR SALE IN CONNECTION WITH, ANY DISTRIBUTION IN
VIOLATION OF THE SECURITIES ACT, OR (D) PURSUANT TO ANOTHER AVAILABLE EXEMPTION
FROM THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT, SUBJECT TO THE
COMPANY'S RIGHT PRIOR TO ANY SUCH OFFER, SALE OR TRANSFER PURSUANT TO CLAUSES
(C) OR (D) TO REQUIRE THE DELIVERY OF AN OPINION OF COUNSEL, CERTIFICATION
AND/OR OTHER INFORMATION SATISFACTORY TO IT IN ACCORDANCE WITH THE INDENTURE, A
COPY OF WHICH MAY BE OBTAINED FROM THE COMPANY. THE HOLDER OF THIS SECURITY BY
ITS ACCEPTANCE HEREOF AGREES THAT IT WILL COMPLY WITH THE FOREGOING
RESTRICTIONS.

            THE HOLDER OF THIS SECURITY BY ITS ACCEPTANCE HEREOF AGREES,
REPRESENTS AND WARRANTS THAT IT WILL NOT ENGAGE IN HEDGING TRANSACTIONS
INVOLVING THIS SECURITY UNLESS SUCH TRANSACTIONS ARE IN COMPLIANCE WITH THE
SECURITIES ACT.

            THE HOLDER OF THIS SECURITY BY ITS ACCEPTANCE HEREOF ALSO AGREES,
REPRESENTS AND WARRANTS THAT IT IS NOT AN EMPLOYEE BENEFIT, INDIVIDUAL
RETIREMENT ACCOUNT OR OTHER PLAN OR ARRANGEMENT

                                      A-1
<PAGE>

SUBJECT TO TITLE I OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS
AMENDED ("ERISA"), OR SECTION 4975 OF THE INTERNAL REVENUE CODE OF 1986, AS
AMENDED (THE "CODE"), (EACH A "PLAN"), OR AN ENTITY WHOSE UNDERLYING ASSETS
INCLUDE "PLAN ASSETS" BY REASON OF ANY PLAN'S INVESTMENT IN THE ENTITY AND NO
PERSON INVESTING "PLAN ASSETS" OF ANY PLAN MAY ACQUIRE OR HOLD THIS SECURITY OR
ANY INTEREST THEREIN, UNLESS SUCH PURCHASER OR HOLDER IS ELIGIBLE FOR THE
EXEMPTIVE RELIEF AVAILABLE UNDER U.S. DEPARTMENT OF LABOR PROHIBITED TRANSACTION
CLASS EXEMPTION 96-23,95-60,91-38,90-1 OR 84-14 OR ANOTHER APPLICABLE EXEMPTION
OR ITS PURCHASE AND HOLDING OF THIS SECURITY IS NOT PROHIBITED BY SECTION 406 OF
ERISA OR SECTION 4975 OF THE CODE WITH RESPECT TO SUCH PURCHASE OR HOLDING. ANY
PURCHASER OR HOLDER OF THIS SECURITY OR ANY INTEREST THEREIN WILL BE DEEMED TO
HAVE REPRESENTED BY ITS PURCHASE AND HOLDING THEREOF THAT EITHER (i) IT IS NOT
AN EMPLOYEE BENEFIT PLAN WITHIN THE MEANING OF SECTION 3(3) OF ERISA, OR A PLAN
TO WHICH SECTION 4975 OF THE CODE IS APPLICABLE, A TRUSTEE OR OTHER PERSON
ACTING ON BEHALF OF AN EMPLOYEE BENEFIT PLAN OR PLAN, OR ANY OTHER PERSON OR
ENTITY USING THE ASSETS OF ANY EMPLOYEE BENEFIT PLAN OR PLAN TO FINANCE SUCH
PURCHASE, OR (ii) SUCH PURCHASE WILL NOT RESULT IN A PROHIBITED TRANSACTION
UNDER SECTION 406 OF ERISA OR SECTION 4975 OF THE CODE FOR WHICH THERE IS NO
APPLICABLE STATUTORY OR ADMINISTRATIVE EXEMPTION.

            IN CONNECTION WITH ANY TRANSFER, THE HOLDER OF THIS SECURITY WILL
DELIVER TO THE REGISTRAR AND TRANSFER AGENT SUCH CERTIFICATES AND OTHER
INFORMATION AS MAY BE REQUIRED BY THE INDENTURE TO CONFIRM THAT THE TRANSFER
COMPLIES WITH THE FOREGOING RESTRICTIONS.

            THIS SECURITY WILL BE ISSUED AND MAY BE TRANSFERRED ONLY IN BLOCKS
HAVING A PRINCIPAL AMOUNT OF NOT LESS THAN $100,000 AND MULTIPLES OF $1,000 IN
EXCESS THEREOF. ANY ATTEMPTED TRANSFER OF THIS SECURITY IN A BLOCK HAVING A
PRINCIPAL AMOUNT OF LESS THAN $100,000 SHALL BE DEEMED TO BE VOID AND OF NO
LEGAL EFFECT WHATSOEVER. ANY SUCH PURPORTED TRANSFEREE SHALL BE DEEMED NOT TO BE
THE HOLDER OF THIS SECURITY FOR ANY PURPOSE, INCLUDING, BUT NOT LIMITED TO, THE
RECEIPT OF DISTRIBUTIONS ON THIS SECURITY, AND SUCH PURPORTED TRANSFEREE SHALL
BE DEEMED TO HAVE NO INTEREST WHATSOEVER IN THIS SECURITY.

            THIS OBLIGATION IS NOT A DEPOSIT AND IS NOT INSURED BY THE UNITED
STATES OR ANY AGENCY OR FUND OF THE UNITED STATES, INCLUDING THE FEDERAL DEPOSIT
INSURANCE CORPORATION (THE "FDIC"). THIS OBLIGATION IS SUBORDINATED TO THE
CLAIMS OF DEPOSITORS AND THE CLAIMS OF GENERAL AND SECURED CREDITORS OF THE
COMPANY, IS INELIGIBLE AS COLLATERAL FOR A LOAN BY THE COMPANY OR ANY OF ITS
SUBSIDIARIES AND IS NOT SECURED.

                                      A-2
<PAGE>

               Form of Junior Subordinated Debt Security due 2034

                                       of

                     Southwest Bancorporation of Texas, Inc.

            Southwest Bancorporation of Texas, Inc., a bank holding company
incorporated in Texas (the "Company"), for value received promises to pay to
Wells Fargo Bank, National Association, not in its individual capacity but
solely as Institutional Trustee for SWBT Statutory Trust II, a Delaware
statutory trust (the "Holder"), or registered assigns, the principal sum of
Thirty Six Million Eighty Three Thousand Dollars on October 7, 2034 and to pay
interest on said principal sum from September 24, 2004, or from the most recent
interest payment date (each such date, an "Interest Payment Date") to which
interest has been paid or duly provided for, quarterly (subject to deferral as
set forth herein) in arrears on January 7, April 7, July 7 and October 7 of each
year commencing January 7, 2005, at a variable per annum rate equal to LIBOR (as
defined in the Indenture) plus 1.90% (the "Interest Rate") (provided, however
that the Interest Rate for any Interest Payment Period may not exceed the
highest rate permitted by New York law, as the same may be modified by United
States law of general applicability) until the principal hereof shall have
become due and payable, and on any overdue principal and (without duplication
and to the extent that payment of such interest is enforceable under applicable
law) on any overdue installment of interest at an annual rate equal to the
Interest Rate in effect for each such Extension Period compounded quarterly. The
amount of interest payable on any Interest Payment Date shall be computed on the
basis of a 360-day year and the actual number of days elapsed in the relevant
interest period. Notwithstanding anything to the contrary contained herein, if
any Interest Payment Date, other than on the Maturity Date, any Redemption Date
or the Special Redemption Date, falls on a day that is not a Business Day, then
any interest payable will be paid on, and such Interest Payment Date will be
moved to, the next succeeding Business Day, and additional interest will accrue
for each day that such payment is delayed as a result thereof. If the Maturity
Date, any Redemption Date or the Special Redemption Date falls on a day that is
not a Business Day, then the principal, premium, if any, and/or interest payable
on such date will be paid on the immediately preceding Business Day. 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 Debt Security (or one or more Predecessor Securities,
as defined in said Indenture) 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 shall be paid to the Person to
whom principal is paid. Any such interest installment not punctually paid or
duly provided for shall forthwith cease to be payable to the registered holders
on such regular record date and may be paid to the Person in whose name this
Debt Security (or one or more Predecessor Debt Securities) is registered at the
close of business on a special record date to be fixed by the Trustee for the
payment of such defaulted interest, notice whereof shall be given to the
registered holders of the Debt Securities not less than 10 days prior to such
special record date, all as more fully provided in the Indenture. The principal
of and interest on this Debt Security shall be payable at the office or agency
of the Trustee (or other Paying Agent appointed by the Company) maintained for
that purpose in any coin or currency of the United States of America that at the
time of payment is legal tender for payment of public and private debts;
provided, however, that payment of interest may be made at the option of the
Company by check mailed to the registered holder at such address as shall

                                      A-3
<PAGE>

appear in the Debt Security Register or by wire transfer of immediately
available funds to an account appropriately designated by the holder hereof.
Notwithstanding the foregoing, so long as the holder of this Debt Security is
the Institutional Trustee, the payment of the principal of and premium, if any,
and interest on this Debt Security shall be made in immediately available funds
when due at such place and to such account as may be designated by the
Institutional Trustee. All payments in respect of this Debt Security shall be
payable in any coin or currency of the United States of America that at the time
of payment is legal tender for payment of public and private debts.

            Upon submission of Notice (as defined in the Indenture) and so long
as no Event of Default 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
distribution period on the Debt Securities at any time and from time to time
during the term of the Debt Securities, for up to 20 consecutive quarterly
periods (each such extended interest distribution period, an "Extension
Period"), during which Extension Period no interest shall be due and payable
(except any Additional Interest that may be due and payable). 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 applicable during such Extension Period, compounded
quarterly from the date such Deferred Interest would have been payable were it
not for the Extension Period, to the extent permitted by law. No Extension
Period may end on a date other than an Interest Payment Date. At the end of any
such Extension Period the Company shall pay all Deferred Interest then accrued
and unpaid on the Debt Securities; provided, however, that no Extension Period
may extend beyond the Maturity Date, Redemption Date or Special Redemption Date,
as the case may be, and provided, further, however, during any such Extension
Period, the Company may not (i) 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 or (ii) 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 (iii) make any payment under any guarantees
of the Company that rank in all respects pari passu with or junior in respect to
the Capital Securities Guarantee (other than (a) repurchases, redemptions or
other acquisitions of shares of capital stock of the Company (A) 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,
(B) in connection with a dividend reinvestment or stockholder stock purchase
plan or (C) 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 applicable
Extension Period, (b) as a result of any exchange, reclassification, combination
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

                                      A-4
<PAGE>

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 to such stock). Prior to the termination of any Extension Period,
the Company may further extend such period, provided, that such period together
with all such previous and further consecutive extensions thereof shall not
exceed 20 consecutive quarterly periods, or extend beyond the Maturity Date.
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. No interest or Deferred Interest shall be due and
payable during an Extension Period, except at the end thereof, but Deferred
Interest shall accrue upon each installment of interest that would otherwise
have been due and payable during such Extension Period until such installment is
paid. The Company must give the Trustee notice of its election to begin or
extend an Extension Period at least five Business Days prior to the next
succeeding Interest Payment Date on which interest on the Debt Securities would
have been payable except for the election to begin such Extension Period.

            The indebtedness evidenced by this Debt Security is, to the extent
provided in the Indenture, subordinate and junior in right of payment to the
prior payment in full of all Senior Indebtedness, and this Debt Security is
issued subject to the provisions of the Indenture with respect thereto. Each
holder of this Debt Security, by accepting the same, (a) agrees to and shall be
bound by such provisions, (b) authorizes and directs the Trustee on such
holder's behalf to take such action as may be necessary or appropriate to
acknowledge or effectuate the subordination so provided and (c) appoints the
Trustee such holder's attorney-in-fact for any and all such purposes. Each
holder hereof, by such holder's 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.

            The Company waives diligence, presentment, demand for payment,
notice of nonpayment, notice of protest, and all other demands and notices.

            This Debt Security shall not be entitled to any benefit under the
Indenture hereinafter referred to and shall not be valid or become obligatory
for any purpose until the certificate of authentication hereon shall have been
signed by or on behalf of the Trustee.

            The provisions of this Debt Security are continued on the reverse
side hereof and such continued provisions shall for all purposes have the same
effect as though fully set forth at this place.

                                      A-5
<PAGE>

            IN WITNESS WHEREOF, the Company has duly executed this certificate.

                              SOUTHWEST BANCORPORATION OF TEXAS, INC.

                              By:_______________________________________________
                              Name:_____________________________________________
                              Title:____________________________________________

Dated:__________________, 2004

                          CERTIFICATE OF AUTHENTICATION

            This is one of the Debt Securities referred to in the
within-mentioned Indenture.

                              Wells Fargo Bank, National Association, not in its
                                  individual capacity but solely as the Trustee

                              By:_______________________________________________
                                                Authorized Officer

Dated:__________________, 2004

                                      A-6
<PAGE>

                          [FORM OF REVERSE OF SECURITY]

            This Debt Security is one of a duly authorized series of Debt
Securities of the Company, all issued or to be issued pursuant to an Indenture
(the "Indenture"), dated as of September 24, 2004, duly executed and delivered
between the Company and Wells Fargo Bank, National Association, as Trustee (the
"Trustee"), to which Indenture and all indentures supplemental thereto reference
is hereby made for a description of the rights, limitations of rights,
obligations, duties and immunities thereunder of the Trustee, the Company and
the holders of the Debt Securities (referred to herein as the "Debt Securities")
of which this Debt Security is a part. The summary of the terms of this Debt
Security contained herein does not purport to be complete and is qualified by
reference to the Indenture.

            Upon the occurrence and continuation of a Tax Event, an Investment
Company Event or a Capital Treatment Event (each a "Special Event"), this Debt
Security may become due and payable, in whole or in part, at any time, within 90
days following the occurrence of such Tax Event, Investment Company Event or
Capital Treatment Event (the "Special Redemption Date"), as the case may be, at
the Special Redemption Price. In the event that the Special Redemption Date
falls on a day prior to the LIBOR Determination Date for any Interest Payment
Period, then the Company shall be required to pay to Securityholders, on the
Business Day following such LIBOR Determination Date, any additional amount of
interest that would have been payable on the Special Redemption Date had the
amount of interest determined on such LIBOR Determination Date been known on the
first day of such Interest Payment Period. The Company shall also have the right
to redeem this Debt Security at the option of the Company, in whole or in part,
on any January 7, April 7, July 7 or October 7 on or after October 7, 2009 (a
"Redemption Date"), at the Redemption Price.

            Any redemption pursuant to the preceding paragraph will be made,
subject to the receipt by the Company of prior approval from any regulatory
authority with jurisdiction over the Company if such approval is then required
under applicable capital guidelines or policies of such regulatory authority,
upon not less than 30 days' nor more than 60 days' notice. If the Debt
Securities are only partially redeemed by the Company, the Debt Securities will
be redeemed pro rata or by lot or by any other method utilized by the Trustee.

            "Redemption Price" means 100% of the principal amount of the Debt
Securities being redeemed plus accrued and unpaid interest on such Debt
Securities to the Redemption Date or, in the case of a redemption due to the
occurrence of a Special Event, to the Special Redemption Date if such Special
Redemption Date is on or after October 7, 2009.

            "Special Redemption Price" means (1) if the Special Redemption Date
is before October 7, 2009, One Hundred Percent (100%) of the principal amount to
be redeemed plus any accrued and unpaid interest thereon to the date of such
redemption and (2) if the Special Redemption Date is on or after October 7,
2009, the Redemption Price for such Special Redemption Date.

            In the event of redemption of this Debt Security in part only, a new
Debt Security or Debt Securities for the unredeemed portion hereof will be
issued in the name of the holder hereof upon the cancellation hereof.

                                      A-7
<PAGE>

            Upon the occurrence of an Acceleration Event, the principal of all
of the Debt Securities may be declared due and payable, and upon such
acceleration shall become due and payable, in the manner, with the effect and
subject to the conditions provided in the Indenture.

            The Indenture contains provisions permitting the Company and the
Trustee, with the consent of the holders of not less than a majority in
aggregate principal amount of the Debt Securities at the time outstanding
affected thereby, as specified in the Indenture, to execute supplemental
indentures for the purpose of adding any provisions to or changing in any manner
or eliminating any of the provisions of the Indenture or of any supplemental
indenture or of modifying in any manner the rights of the holders of the Debt
Securities; provided, however, that no such supplemental indenture shall, among
other things, without the consent of the holders of each Debt Security then
outstanding and affected thereby (i) change the Maturity Date of any Debt
Security, or reduce the principal amount thereof or any premium thereon, or
reduce the rate or manner of calculation of the rate or extend the time of
payment of interest thereon, or reduce (other than as a result of the maturity
or earlier redemption of any such Debt Security in accordance with the terms of
the Indenture and such Debt Security) or increase the aggregate principal amount
of Debt Securities then outstanding, or change any of the redemption provisions,
or make the principal thereof or any interest or premium thereon payable in any
coin or currency other than United States Dollars, or impair or affect the right
of any holder of Debt Securities to institute suit for the payment thereof, or
(ii) reduce the aforesaid percentage of Debt Securities, the holders of which
are required to consent to any such supplemental indenture. The Indenture also
contains provisions permitting the holders of a majority in aggregate principal
amount of the Debt Securities at the time outstanding, on behalf of all of the
holders of the Debt Securities, to waive any past default in the performance of
any of the covenants contained in the Indenture, or established pursuant to the
Indenture, and its consequences, except (a) a default in payments due in respect
of any of the Debt Securities; (b) in respect of covenants or provisions of the
Indenture which cannot be modified or amended without the consent of the holder
of each Debt Security affected, or (c) in respect of the covenants of the
Company relating to its ownership of Common Securities of the Trust. Any such
consent or waiver by the registered holder of this Debt Security (unless revoked
as provided in the Indenture) shall be conclusive and binding upon such holder
and upon all future holders and owners of this Debt Security and of any Debt
Security issued in exchange herefor or in place hereof (whether by registration
of transfer or otherwise), irrespective of whether or not any notation of such
consent or waiver is made upon this Debt Security.

            No reference herein to the Indenture and no provision of this Debt
Security or of the Indenture shall alter or impair the obligation of the
Company, which is absolute and unconditional, to pay all payments due on this
Debt Security at the time and place and at the rate and in the money herein
prescribed.

            As provided in the Indenture and subject to certain limitations
herein and therein set forth, this Debt Security is transferable by the
registered holder hereof on the Debt Security Register of the Company, upon
surrender of this Debt Security for registration of transfer at the office or
agency of the Trustee in Wilmington, Delaware accompanied by a written
instrument or instruments of transfer in form satisfactory to the Company or the
Trustee duly executed by the registered holder hereof or such holder's attorney
duly authorized in writing, and thereupon one or more new Debt Securities of
authorized denominations and for the same aggregate principal

                                      A-8
<PAGE>

amount will be issued to the designated transferee or transferees. No service
charge will be made for any such registration of 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 due presentment for registration of transfer of this Debt
Security, the Company, the Trustee, any Authenticating Agent, any Paying Agent,
any transfer agent and the Debt Security Registrar may deem and treat the
registered holder hereof as the absolute owner hereof (whether or not this Debt
Security shall be overdue and notwithstanding any notice of ownership or writing
hereon) for the purpose of receiving payment of the principal of and premium, if
any, and interest on this Debt Security and for all other purposes, and neither
the Company nor the Trustee nor any Authenticating Agent nor any Paying Agent
nor any transfer agent nor any Debt Security 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 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, stockholder, 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.

            The Debt Securities are issuable only in registered certificated
form without coupons. As provided in the Indenture and subject to certain
limitations herein and therein set forth, Debt Securities are exchangeable for a
like aggregate principal amount of Debt Securities of a different authorized
denomination, as requested by the holder surrendering the same.

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

            THE LAW OF THE STATE OF NEW YORK SHALL GOVERN THE INDENTURE AND THE
DEBT SECURITIES, WITHOUT REGARD TO CONFLICT OF LAWS PRINCIPLES THEREOF.

                                      A-9