Document:

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                                                              Exhibit 4.1

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                               MB FINANCIAL, INC.

                                       AND

                            WILMINGTON TRUST COMPANY,
                                   AS TRUSTEE

                                    INDENTURE

                     8.60% SUBORDINATED DEBENTURES DUE 2032

                         DATED AS OF August 16, 2002

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                                TABLE OF CONTENTS

<Table>
<Caption>

                                                                                                   Page
<S>                                                                                                <C>
ARTICLE I.     DEFINITIONS....................................................................       7
     Section 1.1.     Definitions and Terms...................................................       7

ARTICLE II.    EXCHANGE OF THE DEBENTURES.....................................................      15
     Section 2.1.     Designation and Principal Amount........................................      15
     Section 2.2.     Maturity................................................................      15
     Section 2.3.     Form and Payment........................................................      16
     Section 2.4.     Interest................................................................      16
     Section 2.5.     Execution and Authentication............................................      17
     Section 2.6.     Registration of Transfer and Exchange...................................      18
     Section 2.7.     Temporary Debentures....................................................      19
     Section 2.8.     Mutilated, Destroyed, Lost or Stolen Debentures.........................      19
     Section 2.9.     Cancellation............................................................      20
     Section 2.10.    Benefit of Indenture....................................................      20
     Section 2.11.    Authentication Agent....................................................      20

ARTICLE III.   REDEMPTION OF DEBENTURES.......................................................      21
     Section 3.1.     Redemption..............................................................      21
`    Section 3.2.     Special Event Redemption................................................      21
     Section 3.3.     Optional Redemption by the Company......................................      22
     Section 3.4.     Notice of Redemption....................................................      22
     Section 3.5.     Payment upon Redemption.................................................      23
     Section 3.6.     No Sinking Fund.........................................................      24

ARTICLE IV.    EXTENSION OF INTEREST PAYMENT PERIOD...........................................      24
     Section 4.1.     Extension of Interest Payment Period....................................      24
     Section 4.2.     Notice of Extension.....................................................      25
     Section 4.3.     Limitation on Transactions..............................................      25

ARTICLE V.     PARTICULAR COVENANTS OF THE COMPANY............................................      26
     Section 5.1.     Payment of Principal and Interest.......................................      26
     Section 5.2.     Maintenance of Agency...................................................      26
     Section 5.3.     Paying Agents...........................................................      26
     Section 5.4.     Appointment to Fill Vacancy in Office of the Trustee....................      27
     Section 5.5.     Compliance with Consolidation Provisions................................      27
     Section 5.6.     Limitation on Transactions..............................................      28
     Section 5.7.     Covenants as to the Trust...............................................      28
     Section 5.8.     Covenants as to Purchase................................................      29
     Section 5.9.     Waiver of Usury, Stay or Extension Laws.................................      29
     Section 5.10.    Limitation on Additional Junior Indebtedness............................      29

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ARTICLE VI.    THE DEBENTUREHOLDERS' LISTS AND REPORTS BY THE
               COMPANY AND THE TRUSTEE........................................................      31
     Section 6.1.     The Company to Furnish the Trustee Names and
                      Addresses of the Debentureholders.......................................      31
     Section 6.2.     Preservation of Information Communications with
                      the Debentureholders....................................................      31
     Section 6.3.     Reports by the Company..................................................      31
     Section 6.4.     Reports by the Trustee..................................................      32

ARTICLE VII.   REMEDIES OF THE TRUSTEE AND DEBENTUREHOLDERS
               ON EVENT OF DEFAULT............................................................      32
     Section 7.1.     Events of Default.......................................................      32
     Section 7.2.     Collection of Indebtedness and Suits for
                      Enforcement by the Trustee..............................................      34
     Section 7.3.     Application of Moneys Collected.........................................      35
     Section 7.4.     Limitation on Suits.....................................................      36
     Section 7.5.     Rights and Remedies Cumulative; Delay or
                      Omission not Waiver.....................................................      36
     Section 7.6.     Control by the Debentureholders.........................................      37
     Section 7.7.     Undertaking to Pay Costs................................................      37
     Section 7.8.     Direct Action; Right of Set-Off.........................................      38

ARTICLE VIII.  FORM OF THE DEBENTURE AND ORIGINAL ISSUE.......................................      38
     Section 8.1.     Form of Debenture.......................................................      38
     Section 8.2.     Original Issue of the Debenture.........................................      38

ARTICLE IX.    MISCELLANEOUS..................................................................      39
     Section 9.1.     Certain Duties and Responsibilities of the Trustee......................      39
     Section 9.2.     Notice of Defaults......................................................      40
     Section 9.3.     Certain Rights of the Trustee...........................................      40
     Section 9.4.     The Trustee not Responsible for Recitals, Etc...........................      41
     Section 9.5.     May Hold the Debentures.................................................      42
     Section 9.6.     Moneys Held in Trust....................................................      42
     Section 9.7.     Compensation and Reimbursement..........................................      42
     Section 9.8.     Reliance on Officers' Certificate.......................................      42
     Section 9.9.     Disqualification; Conflicting Interests.................................      43
     Section 9.10.    Corporate Trustee Required; Eligibility.................................      43
     Section 9.11.    Resignation and Removal; Appointment of Successor.......................      43
     Section 9.12.    Acceptance and Appointment by Successor.................................      44
     Section 9.13.    Merger, Conversion, Consolidation or
                      Succession to Business..................................................      45
     Section 9.14.    Preferential Collection of Claims against
                      the Company.............................................................      45

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ARTICLE X.     CONCERNING THE DEBENTUREHOLDERS................................................      45
     Section 10.1.    Evidence of Action by the Holders.......................................      45
     Section 10.2.    Proof of Execution by the Debentureholders..............................      46
     Section 10.3.    Who May be Deemed Owners................................................      46
     Section 10.4.    Certain Debentures Owned by Company Disregarded.........................      46
     Section 10.5.    Actions Binding on the Future Debentureholders..........................      47

ARTICLE XI.    SUPPLEMENTAL INDENTURES........................................................      47
     Section 11.1.    Supplemental Indentures without the Consent of
                      the Debentureholders....................................................      47
     Section 11.2.    Supplemental Indentures with Consent of the
                      Debentureholders........................................................      48
     Section 11.3.    Effect of Supplemental Indentures.......................................      49
     Section 11.4.    The Debentures Affected by Supplemental Indentures......................      49
     Section 11.5.    Execution of Supplemental Indentures....................................      49

ARTICLE XII.   SUCCESSOR CORPORATION..........................................................      50
     Section 12.1.    The Company may Consolidate, Etc........................................      50
     Section 12.2.    Successor Corporation Substituted.......................................      50
     Section 12.3.    Evidence of Consolidation, Etc. to Trustee..............................      51

ARTICLE XIII.  SATISFACTION AND DISCHARGE.....................................................      51
     Section 13.1.    Satisfaction and Discharge of Indenture.................................      51
     Section 13.2.    Discharge of Obligations................................................      51
     Section 13.3.    Deposited Moneys to be Held in Trust....................................      52
     Section 13.4.    Payment Of Moneys Held by Paying Agents.................................      52
     Section 13.5.    Repayment to the Company................................................      52

ARTICLE XIV.   IMMUNITY OF INCORPORATORS, STOCKHOLDERS,
               OFFICERS AND DIRECTORS.........................................................      53
     Section 14.1.    No Recourse.............................................................      53

ARTICLE XV.    MISCELLANEOUS PROVISIONS.......................................................      53
     Section 15.1.    Effect on Successors and Assigns........................................      53
     Section 15.2.    Actions by Successor....................................................      53
     Section 15.3.    Surrender of the Company Powers.........................................      53
     Section 15.4.    Notices.................................................................      53
     Section 15.5.    Governing Law...........................................................      54
     Section 15.6.    Treatment of the Debentures as Debt.....................................      54
     Section 15.7.    Compliance Certificates and Opinions....................................      54
     Section 15.8.    Payments on Business Days...............................................      54
     Section 15.9.    Conflict with Trust Indenture Act.......................................      55
     Section 15.10.   Counterparts............................................................      55
     Section 15.11.   Separability............................................................      55
     Section 15.12.   Assignment..............................................................      55
     Section 15.13.   Acknowledgment of Rights; Right of Setoff...............................      55

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ARTICLE XVI.   SUBORDINATION OF THE DEBENTURES................................................      56
     Section 16.1.    Agreement to Subordinate................................................      56
     Section 16.2.    Default on Senior Indebtedness..........................................      56
     Section 16.3.    Liquidation; Dissolution; Bankruptcy....................................      56
     Section 16.4.    Subrogation.............................................................      58
     Section 16.5.    The Trustee to Effectuate Subrogation...................................      58
     Section 16.6.    Notice by the Company...................................................      59
     Section 16.7.    Rights of the Trustee; Holders of the Senior
                      Indebtedness............................................................      59
     Section 16.8.    Subordination may not be Impaired.......................................      60

EXHIBIT A             ........................................................................     A-1
</Table>

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                              CROSS-REFERENCE TABLE

<Table>
<Caption>

Section of Trust
Indenture Act of                                                                                Section of
1939, as amended                                                                                Indenture
----------------                                                                                ----------
<S>                                                                                           <C>
310(a)    ..............................................................................           9-10
310(b)    ..............................................................................        9.9, 9-11
310(c)    ..............................................................................      Not Applicable
311(a)    ..............................................................................           9.14
311(b)    ..............................................................................           9.14
311(c)    ..............................................................................      Not Applicable
312(a)    ..............................................................................       6.1, 6.2(a)
312(b)    ..............................................................................          6.2(c)
312(c)    ..............................................................................          6.2(c)
313(a)    ..............................................................................          6.4(a)
313(b)    ..............................................................................          6.4(b)
313(c)    ..............................................................................      6.4(a), 6.4(b)
313(d)    ..............................................................................          6.4(c)
314(a)    ..............................................................................          6.3(a)
314(b)    ..............................................................................      Not Applicable
314(c)    ..............................................................................           15.7
314(d)    ..............................................................................      Not Applicable
315(a)    ..............................................................................       9.1(a), 9.3
315(b)    ..............................................................................           9.2
315(c)    ..............................................................................          9.1(a)
315(d)    ..............................................................................          9.1(b)
315(e)    ..............................................................................           7.7
316(a)    ..............................................................................         1.1, 7.6
316(b)    ..............................................................................          7.4(b)
316(c)    ..............................................................................         10.1(b)
317(a)    ..............................................................................           7.2
317(b)    ..............................................................................           5.3
318(a)    ..............................................................................           15.9
</Table>

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

                                        v
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                                    INDENTURE

         INDENTURE, dated as of August 16, 2002, between MB FINANCIAL,
INC., a Maryland corporation (the "Company"), and WILMINGTON TRUST COMPANY, a
banking corporation duly organized and existing under the laws of the State of
Delaware, as trustee (the "Trustee");

                                    RECITALS

         WHEREAS, for its lawful corporate purposes, the Company has duly
authorized the execution and delivery of this Indenture to provide for the
issuance of securities to be known as its 8.60% Subordinated Debentures due 2032
(hereinafter referred to as the "Debentures"), the form and substance of such
Debentures and the terms, provisions and conditions thereof to be set forth as
provided in this Indenture;

         WHEREAS, MB Financial Capital Trust I, a Delaware statutory business
trust (the "Trust"), has offered to the public $52,000,000 aggregate liquidation
amount of its Preferred Securities (as defined herein) ($59,800,000 if the
Underwriters exercise their Option (as defined herein)) and proposes to invest
the proceeds from such offering, together with the proceeds of the issuance and
sale by the Trust to the Company of $1,625,000 aggregate liquidation amount of
its Common Securities (as defined herein) ($1,868,750 if the Underwriters
exercise their Option) in $53,625,000 aggregate principal amount of the
Debentures ($61,668,750 if the Underwriters exercise their Option);

         WHEREAS, the Company has requested that the Trustee execute and deliver
this Indenture;

         WHEREAS, all requirements necessary to make this Indenture a valid
instrument in accordance with its terms, and to make the Debentures, when
executed by the Company and authenticated and delivered by the Trustee, the
valid obligations of the Company, have been performed, and the execution and
delivery of this Indenture have been duly authorized in all respects;

         WHEREAS, to provide the terms and conditions upon which the Debentures
are to be authenticated, issued and delivered, the Company has duly authorized
the execution of this Indenture; and

         WHEREAS, all things necessary to make this Indenture a valid agreement
of the Company, in accordance with its terms, have been done.

         NOW, THEREFORE, in consideration of the premises and the purchase of
the Debentures by the holders thereof, it is mutually covenanted and agreed as
follows for the equal and ratable benefit of the holders of the Debentures:

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                                   ARTICLE I.
                                  DEFINITIONS

         Section 1.1. Definitions of Terms. The terms defined in this Section
1.1 (except as in this Indenture 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 1.1 and shall include the plural as well as the singular. All other
terms used in this Indenture that are defined in the Trust Indenture Act, or
that are by reference in the Trust Indenture Act defined in the Securities Act
(except as herein otherwise expressly provided or unless the context otherwise
requires), shall have the meanings assigned to such terms in the Trust Indenture
Act and in the Securities Act as in force at the date of the execution of this
instrument. All accounting terms used herein and not expressly defined shall
have the meanings assigned to such terms in accordance with Generally Accepted
Accounting Principles.

         "Accelerated Maturity Date" means if the Company elects to accelerate
the Maturity Date in accordance with Section 2.2(b), the date selected by the
Company which is prior to the Scheduled Maturity Date, but is after September
30, 2007.

         "Additional Junior Indebtedness" means any indebtedness, liabilities or
obligations of the Company, or any Affiliate of the Company, under debt
securities (or guarantees in respect of debt securities) initially issued to any
trust, or a trustee of a trust, partnership or other entity affiliated with the
Company that is, directly or indirectly, a finance subsidiary (as such term is
defined in Rule 3a-5 under the Investment Company Act) or other financing
vehicle of the Company or any Affiliate of the Company in connection with the
issuance by that entity of preferred securities or other securities that are
intended to qualify for Tier 1 capital treatment (or the then equivalent
thereof) for purposes of the capital adequacy guidelines of the Federal Reserve,
as then in effect and applicable to the Company, other than the Debentures;
provided, however, that the inability of the Company to treat all or any portion
of the Additional Junior Indebtedness as Tier 1 capital shall not disqualify it
as Additional Junior Indebtedness 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 now or may hereafter accord Tier 1 capital treatment (including the
Debentures) in excess of the amount which may qualify for treatment as Tier 1
capital under applicable capital adequacy guidelines of the Federal Reserve.

         "Additional Payments" shall have the meaning set forth in Section
2.4(c).

         "Additional Senior Obligations" means all indebtedness of the Company
whether incurred on or prior to the date of this Indenture or thereafter
incurred, for claims in respect of derivative products such as interest and
foreign exchange rate contracts, commodity contracts and similar arrangements;
provided, however, that Additional Senior Obligations does not include claims in
respect of Senior Debt or Subordinated Debt or obligations which, by their
terms, are expressly stated to be not superior in right of payment to the
Debentures or to rank pari passu in right of payment with the Debentures,
including the Company's Floating Rate Junior Subordinated Deferrable Interest
Debentures due 2028 issued to Coal City Capital Trust I. For purposes of this
definition, "claim" shall have the meaning assigned thereto in Section 101(4) of
the United States Bankruptcy Code of 1978, as amended.

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         "Administrative Trustees" shall have the meaning set forth in the Trust
Agreement.

         "Affiliate" means, with respect to a specified Person, (a) any Person
directly or indirectly owning, controlling or holding with power to vote 10% or
more of the outstanding voting securities or other ownership interests of the
specified Person; (b) any Person 10% or more of whose outstanding voting
securities or other ownership interests are directly or indirectly owned,
controlled or held with power to vote by the specified Person; (c) any Person
directly or indirectly controlling, controlled by, or under common control with
the specified Person; (d) a partnership in which the specified Person is a
general partner; (e) any officer or director of the specified Person; and (f) if
the specified Person is an individual, any entity of which the specified Person
is an officer, director or general partner.

         "Authenticating Agent" means an authenticating agent with respect to
the Debentures appointed by the Trustee pursuant to Section 2.11.

         "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 of the Company or any
duly authorized committee of such Board.

         "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.

         "Business Day" means, with respect to the Debentures, any day other
than a Saturday or a Sunday or a day on which federal or state banking
institutions in the Borough of Manhattan, the City of New York, are authorized
or required by law, executive order or regulation to close, or a day on which
the Corporate Trust Office of the Trustee or the Property Trustee is closed for
business.

         "Capital Treatment Event" means the receipt by the Company and the
Trust of an Opinion of Counsel, rendered by counsel experienced in such
matters within a reasonable period of time after the applicable occurrence,
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 thereof or therein, or as a
result of any official or administrative pronouncement, action or judicial
decision interpreting or applying such laws or regulations, which amendment
or change is effective or, which pronouncement, action or judicial decision
is announced on or after the date of issuance of the Preferred Securities
under the Trust Agreement, there is more than an insubstantial risk of
impairment of the Company's ability to treat the aggregate Liquidation Amount
of the Preferred Securities (or any substantial portion thereof) as Tier 1
capital (or the then equivalent thereof) for purposes of the capital adequacy
guidelines of the Federal Reserve, as then in effect and applicable to the
Company; provided, however, that the Trust or the Company shall have requested
and received such Opinion of Counsel with regard to such matters within a
reasonable period of time after the Trust or the Company shall have become
aware of the occurrence or possible occurrence of any such event.

         "Certificate" means a certificate signed by the principal executive
officer, the principal financial officer, the principal accounting officer, the
treasurer or any vice president of the Company. The Certificate need not comply
with the provisions of Section 15.7.

                                        8
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         "Change in 1940 Act Law" shall have the meaning set forth in the
definition of "Investment Company Event."

         "Code" means the Internal Revenue Code of 1986, as amended.

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

         "Common Securities" means undivided beneficial interests in the assets
of the Trust which rank pari passu with the Preferred Securities; provided,
however, that upon the occurrence and during the continuation of an Event of
Default, the rights of holders of Common Securities to payment in respect of (a)
distributions, and (b) payments upon liquidation, redemption and otherwise, are
subordinated to the rights of holders of Preferred Securities.

         "Company" means MB Financial, Inc., a corporation duly organized and
existing under the laws of the State of Maryland, and, subject to the provisions
of Article XII, shall also include its successors and assigns.

         "Compounded Interest" shall have the meaning set forth in Section 4.1.

         "Corporate Trust Office" means the office of the Trustee at which, at
any particular time, its corporate trust business shall be principally
administered, which office at the date hereof is located at Rodney Square North,
1100 North Market Street, Wilmington, Delaware 19890-0001, Attention: Corporate
Trust Department.

         "Coupon Rate" shall have the meaning set forth in Section 2.4.

         "Custodian" means any receiver, trustee, assignee, liquidator, or
similar official under any Bankruptcy Law.

         "Debentures" shall have the meaning set forth in the Recitals hereto.

         "Debentureholder," "holder of Debentures," "registered holder," or
other similar term, means the Person or Persons in whose name or names a
particular Debenture shall be registered on the books of the Company or the
Trustee kept for that purpose in accordance with the terms of this Indenture.

         "Debenture Register" shall have the meaning set forth in Section
2.6(b).

         "Debenture Registrar" shall have the meaning set forth in Section
2.6(b).

         "Debt" means with respect to any Person, whether recourse is to all or
a portion of the assets of such Person and whether or not contingent, (a) every
obligation of such Person for money borrowed; (b) every obligation of such
Person evidenced by bonds, debentures, notes or other similar instruments,
including obligations incurred in connection with the acquisition of property,
assets or businesses; (c) every reimbursement obligation of such Person with
respect to

                                        9
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letters of credit, bankers' acceptances or similar facilities issued for the
account of such Person; (d) every obligation of such Person issued or assumed as
the deferred purchase price of property or services (but excluding trade
accounts payable or accrued liabilities arising in the ordinary course of
business); (e) every capital lease obligation of such Person; and (f) and every
obligation of the type referred to in clauses (a) through (e) of another Person
and all dividends of another Person the payment of which, in either case, such
Person has guaranteed or is responsible or liable, directly or indirectly, as
obligor or otherwise.

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

         "Deferred Payments" shall have the meaning set forth in Section 4.1.

         "Direct Action" shall have the meaning set forth in Section 7.8.

         "Dissolution Event" means that as a result of the occurrence and
continuation of a Special Event, the Trust is to be dissolved in accordance with
the Trust Agreement and the Debentures held by the Property Trustee are to be
distributed to the holders of the Trust Securities issued by the Trust pro rata
in accordance with the Trust Agreement.

         "Distribution" shall have the meaning set forth in the Trust Agreement.

         "Event of Default" means, with respect to the Debentures, any event
specified in Section 7.1, which has continued for the period of time, if any,
and after the giving of the notice, if any, therein designated.

         "Exchange Act," means the Securities Exchange Act of 1934, as amended,
as in effect at the date of execution of this Indenture.

         "Extension Period" shall have the meaning set forth in Section 4.1.

         "Federal Reserve" means the Board of Governors of the Federal Reserve
System.

         "Generally Accepted Accounting Principles" means such accounting
principles as are generally accepted at the time of any computation required
hereunder.

         "Governmental Obligations" means securities that are (a) direct
obligations of the United States of America for the payment of which its full
faith and credit is pledged; or (b) obligations of a Person controlled or
supervised by and acting as an agency or instrumentality of the United States of
America, the payment of which is unconditionally guaranteed as a full faith and
credit obligation by the United States of America that, in either case, are not
callable or redeemable at the option of the issuer thereof, and shall also
include a depository receipt issued by a bank (as defined in Section 3(a)(2) of
the Securities Act) as custodian with respect to any such Governmental
Obligation or a specific payment of principal of or interest on any such
Governmental Obligation held by such custodian for the account of the holder of
such depositary receipt; provided, however, that (except as required by law)
such custodian is not authorized to make any deduction from the amount payable
to the holder of such depositary receipt from any amount received by the
custodian in respect of the Governmental Obligation or the specific

                                       10
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payment of principal of or interest on the Governmental Obligation evidenced by
such depositary receipt.

         "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.

         "Indenture" means this instrument as originally executed or as it may
from time to time be supplemented or amended by one or more indentures
supplemental hereto entered into in accordance with the terms hereof.

         "Interest Payment Date" shall have the meaning set forth in Section
2.4(a).

         "Investment Company Act," means the Investment Company Act of 1940, as
amended, as in effect at the date of execution of this Indenture.

         "Investment Company Event" means the receipt by the Trust and the
Company of an Opinion of Counsel, rendered by counsel experienced in such
matters within a reasonable amount of time after the applicable occurrence, to
the effect that, as a result of the occurrence of a change in law or regulation
or a change in interpretation or application of law or regulation by any
legislative body, court, governmental agency or regulatory authority (a "Change
in 1940 Act Law"), the Trust is or shall be considered an "investment company"
that is required to be registered under the Investment Company Act, which Change
in 1940 Act Law becomes effective on or after the date of original issuance of
the Preferred Securities under the Trust Agreement; provided, however, that the
Trust or the Company shall have requested and received such Opinion of Counsel
with regard to such matters within a reasonable period of time after the Trust
or the Company shall have become aware of the occurrence or possible occurrence
of any such event.

         "Maturity Date" means the date on which the Debentures mature and on
which the principal shall be due and payable together with all accrued and
unpaid interest thereon including Compounded Interest and Additional Payments,
if any.

         "Ministerial Action" shall have the meaning set forth in Section 3.2.

         "Officers' Certificate" means a certificate signed by the President or
a Senior or Executive Vice President and by the Treasurer or an Assistant
Treasurer or the Controller or an Assistant Controller or the Secretary or an
Assistant Secretary of the Company that is delivered to the Trustee in
accordance with the terms hereof. Each such certificate shall include the
statements provided for in Section 15.7, if and to the extent required by the
provisions thereof.

         "Opinion of Counsel" means an opinion in writing of independent,
outside legal counsel for the Company, that is delivered to the Trustee in
accordance with the terms hereof. Each such opinion shall include the statements
provided for in Section 15.7, if and to the extent required by the provisions
thereof.

         "Outstanding," when used with reference to the Debentures, means,
subject to the provisions of Section 10.4, as of any particular time, all
Debentures theretofore authenticated and delivered by the Trustee under this
Indenture, except (a) Debentures theretofore canceled by the Trustee or any
Paying Agent, or delivered to the Trustee or any paying agent for cancellation
or that have previously been canceled; (b) Debentures or portions thereof for
the payment or redemption of which money or Governmental Obligations in the
necessary amount shall have

                                       11
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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, however, that, if
such Debentures or portions of such Debentures are to be redeemed prior to the
maturity thereof, notice of such redemption shall have been given as in Article
III provided, or provision satisfactory to the Trustee shall have been made for
giving such notice; and (c) Debentures in lieu of or in substitution for which
other Debentures shall have been authenticated and delivered pursuant to the
terms of Section 2.6; provided, however, that in determining whether the holders
of the requisite percentage of Debentures have given any request, notice,
consent or waiver hereunder, Debentures held by the Company or any Affiliate of
the Company shall not be included; provided, further, that the Trustee shall be
protected in relying upon any request, notice, consent or waiver unless a
Responsible Officer of the Trustee shall have actual knowledge that the holder
of such Debenture is the Company or an Affiliate thereof.

         "Paying Agent" means any paying agent or co-paying agent appointed
pursuant to Section 5.3.

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

         "Predecessor Debenture" means every previous Debenture evidencing all
or a portion of the same debt as that evidenced by such particular Debenture;
and, for the purposes of this definition, any Debenture authenticated and
delivered under Section 2.8 in lieu of a lost, destroyed or stolen Debenture
shall be deemed to evidence the same debt as the lost, destroyed or stolen
Debenture.

         "Preferred Securities" means the 8.60% Cumulative Trust Preferred
Securities representing undivided beneficial interests in the assets of the
Trust which rank pari passu with Common Securities issued by the Trust;
provided, however, that upon the occurrence and during the continuation of an
Event of Default, the rights of holders of Common Securities to payment in
respect of (a) distributions, and (b) payments upon liquidation, redemption and
otherwise, are subordinated to the rights of holders of Preferred Securities.

         "Preferred Securities Guarantee" means any guarantee that the Company
may enter into with the Trustee or other Persons that operates directly or
indirectly for the benefit of holders of Preferred Securities.

         "Property Trustee" has the meaning set forth in the Trust Agreement.

         "Redemption Price" shall have the meaning set forth in Section 3.2.

         "Responsible Officer" when used with respect to the Trustee means any
officer within the Corporate Trust Office of the Trustee with direct
responsibility for the administration of this Indenture, including any vice
president, any assistant vice president, any assistant secretary or any other
officer or assistant officer of the Trustee who customarily performs functions
similar to those performed by the Persons who at the time shall be such
officers, respectively, or to whom

                                       12
<Page>

any corporate trust matter is referred because of his or her knowledge of and
familiarity with the particular subject.

         "Scheduled Maturity Date" means September 30, 2032.

         "Securities Act," means the Securities Act of 1933, as amended, as in
effect at the date of execution of this Indenture.

         "Senior Debt" means the principal of (and premium, if any) and
interest, if any (including interest accruing on or after the filing of any
petition in bankruptcy or for reorganization relating to the Company whether or
not such claim for post-petition interest is allowed in such proceeding), on all
Debt, whether incurred on or prior to the date of this Indenture or thereafter
incurred, unless, 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 in right of payment to the Debentures or to other Debt which is pari
passu with, or subordinated to, the Debentures; provided, that Senior Debt shall
not be deemed to include (a) any Debt of the Company which when incurred and
without respect to any election under section 1111(b) of the United States
Bankruptcy Code of 1978, as amended, was without recourse to the Company; (b)
any Debt of the Company owed to any of its subsidiaries; (c) the Guarantee
Agreement; (d) Debt to any employee of the Company; (d) Debt which by its terms
is subordinated to trade accounts payable or accrued liabilities arising in the
ordinary course of business to the extent that payments made to the holders of
such Debt by the holders of the Debentures as a result of the subordination
provisions of this Indenture would be greater than they otherwise would have
been as a result of any obligation of such holders to pay amounts over to the
obligees on such trade accounts payable or accrued liabilities arising in the
ordinary course of business as a result of subordination provisions to which
such Debt is subject; and (e) Debt which constitutes Subordinated Debt.

         "Senior Indebtedness" shall have the meaning set forth in Section 16.1.

         "Special Event" means a Tax Event, a Capital Treatment Event or an
Investment Company Event.

         "Subordinated Debt" means the principal of (and premium, if any) and
interest, if any (including interest accruing on or after the filing of any
petition in bankruptcy or for reorganization relating to the Company whether or
not such claim for post-petition interest is allowed in such proceeding), on
Debt (other than the Debentures), whether incurred on or prior to the date of
this Indenture or thereafter incurred, which is by its terms expressly provided
to be junior and subordinate to other Debt of the Company (other than the
Debentures); provided, however, that Subordinated Debt will not be deemed to
include (a) any Debt of the Company which when incurred and without respect to
any election under section 1111(b) of the United States Bankruptcy Code of 1978,
as amended, was without recourse to the Company, (b) any Debt of the Company
owed to any of its subsidiaries, (c) Debt to any employee of the Company; (d)
Debt which by its terms is subordinated to trade accounts payable or accrued
liabilities arising in the ordinary course of business to the extent that
payments made to the holders of such Debt by the holders of the Debentures as a
result of the subordination provisions of this Indenture would be greater than
they otherwise would have been as a result of any obligation of such holders to
pay amounts over to the obligees on such trade accounts payable or accrued
liabilities arising in the ordinary course of business as a result of
subordination provisions to which such Debt is subject; (e) Debt which
constitutes Senior Debt and (f) any Debt of the Company under debt securities
(and guarantees in respect of these debt securities) initially issued to any
trust, or a trustee of a trust, partnership or other entity affiliated with the
Company that is, directly or indirectly, a financing vehicle of the Company in
connection with the issuance by that entity of preferred securities or other
securities which are

                                       13
<Page>

intended to qualify for Tier 1 capital treatment, including the Company's
Floating Rate Junior Subordinated Deferrable Interest Debentures due 2028 issued
to Coal City Capital Trust I.

         "Subsidiary" means, with respect to any Person, (a) any corporation at
least a majority of whose outstanding Voting Stock shall at the time be 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; (b) any general partnership,
limited liability company, joint venture, trust or similar entity, at least a
majority of whose outstanding partnership or similar interests 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 (c) any limited partnership of
which such Person or any of its Subsidiaries is a general partner.

         "Tax Event" means the receipt by the Company and the Trust of an
Opinion of Counsel, rendered by counsel experienced in such matters within a
reasonable amount of time after the applicable occurrence, 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 or judicial decision interpreting or
applying such laws or regulations, which amendment or change is effective or
which pronouncement or decision is announced on or after the date of issuance of
the Preferred Securities under the Trust Agreement, there is more than an
insubstantial risk that (a) the Trust is, or shall be within ninety (90) days
after the date of such Opinion of Counsel, subject to United States federal
income tax with respect to income received or accrued on the Debentures; (b)
interest payable by the Company on the Debentures is not, or within ninety (90)
days after the date of such Opinion of Counsel, shall not be, deductible by the
Company, in whole or in part, for United States federal income tax purposes; or
(c) the Trust is, or shall be within ninety (90) days after the date of such
Opinion of Counsel, subject to more than a de minimis amount of other taxes,
duties, assessments or other governmental charges; provided, however, that the
Trust or the Company shall have requested and received such an Opinion of
Counsel with regard to such matters within a reasonable period of time after the
Trust or the Company shall have become aware of the occurrence or the possible
occurrence of any of the events described in clauses (a) through (c) above.

         "Trust" means MB Financial Capital Trust I, a Delaware statutory
business trust.

         "Trust Agreement" means the Amended and Restated Trust Agreement, dated
as of August 16, 2002 of the Trust.

         "Trustee" means Wilmington Trust Company, a Delaware banking
corporation, and, subject to the provisions of Article IX, shall also include
its successors and assigns, and, if at any time there is more than one Person
acting in such capacity hereunder, "Trustee" shall mean each such Person.

         "Trust Indenture Act," means the Trust Indenture Act of 1939, as
amended, subject to the provisions of Sections 11.1, 11.2, and 12.1, as in
effect at the date of execution of this Indenture.

         "Trust Securities" means the Common Securities and Preferred
Securities, collectively.

                                       14
<Page>

         "Voting Stock," as applied to stock of any Person, 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.

                                   ARTICLE II.
                     ISSUE, DESCRIPTION, TERMS, CONDITIONS,
                   REGISTRATION AND EXCHANGE OF THE DEBENTURES

         Section 2.1. Designation and Principal Amount. There is hereby
authorized Debentures designated the "8.60% Subordinated Debentures due 2032,"
limited in aggregate principal amount up to $61,668,750, which amount shall be
as set forth in any written order of the Company for the authentication and
delivery of Debentures pursuant to Section 2.6.

         Section 2.2. Maturity.

         (a)      The Maturity Date shall be either:

                  (i)      the Scheduled Maturity Date; or

                  (ii)     if the Company elects to accelerate the Maturity Date
         to be a date prior to the Scheduled Maturity Date in accordance with
         Section 2.2(c), the Accelerated Maturity Date.

         (b)      The Company may at any time before the day which is ninety
(90) days before the Scheduled Maturity Date and after September 30, 2007, elect
to shorten the Maturity Date only once to the Accelerated Maturity Date provided
that the Company has received the prior approval of the Federal Reserve if then
required under applicable capital guidelines, policies or regulations of the
Federal Reserve.

         (c)      If the Company elects to accelerate the Maturity Date in
accordance with Section 2.2(b), the Company shall give notice to the Trustee and
the Trust (unless the Trust is not the holder of the Debentures, in which case
the Trustee will give notice to the holders of the Debentures) of the
acceleration of the Maturity Date and the Accelerated Maturity Date at least
thirty (30) days and no more than 180 days before the Accelerated Maturity Date;
provided, however, that nothing provided in this Section 2.2 shall limit the
Company's rights, as provided in Article III hereof, to redeem all or a portion
of the Debentures at such time or times on or after September 30, 2007, as the
Company may so determine, or at any time upon the occurrence of a Special Event
or pursuant to Section 3.3(b) in connection with the purchase of Preferred
Securities by the Company.

         Section 2.3. Form and Payment. The Debentures shall be issued in fully
registered certificated form without interest coupons. Principal and interest on
the Debentures issued in certificated form shall be payable, the transfer of
such Debentures shall be registrable and such Debentures shall be exchangeable
for Debentures bearing identical terms and provisions at the office or agency of
the Trustee; provided, however, that payment of interest may be made at the
option of the Company by check mailed to the holder at such address as shall
appear in the

                                       15
<Page>

Debenture Register or by wire transfer to an account maintained by the holder as
specified in the Debenture Register, provided that the holder provides proper
transfer instructions by the regular record date. Notwithstanding the foregoing,
so long as the holder of any Debentures is the Property Trustee, the payment of
principal of and interest (including Compounded Interest and Additional
Payments, if any) on such Debentures held by the Property Trustee shall be made
at such place and to such account as may be designated by the Property Trustee.

         Section 2.4. Interest.

         (a)      Each Debenture shall bear interest at a rate of 8.60% per
annum (the "Coupon Rate") from the original date of issuance until the
principal thereof becomes due and payable, and on any overdue principal and
(to the extent that payment of such interest is enforceable under applicable
law) on any overdue installment of interest at the Coupon Rate, compounded
quarterly, payable (subject to the provisions of Article IV) quarterly in
arrears on March 31, June 30, September 30, and December 31 of each year
(each, an "Interest Payment Date"), commencing on September 30, 2002, to the
Person in whose name such Debenture or any Predecessor Debenture is
registered, at the close of business on the regular record date for such
interest installment, which shall be the fifteenth day of the last month of
the calendar quarter.

         (b)      The amount of interest payable for any period shall be
computed on the basis of a 360-day year of twelve 30-day months. The amount of
interest payable for any period shorter than a full quarterly period for which
interest is computed shall be computed on the basis of the number of days
elapsed in a 360-day year of twelve 30-day months. In the event that any date on
which interest is payable on the Debentures is not a Business Day, then payment
of interest payable on such date shall be made on the next succeeding day which
is a Business Day (and without any interest or other payment in respect of any
such delay) except that, if such Business Day is in the next succeeding calendar
year, such payment shall be made on the immediately preceding Business Day (and
without any reduction of interest or any other payment in respect of any such
acceleration), in each case with the same force and effect as if made on the
date such payment was originally payable.

         (c)      If, at any time while the Property Trustee is the holder of
any Debentures, the Trust or the Property Trustee is required to pay any taxes,
duties, assessments or governmental charges of whatever nature (other than
withholding taxes) imposed by the United States, or any other taxing authority,
then, in any case, the Company shall pay as additional payments ("Additional
Payments") on the Debentures held by the Property Trustee, such additional
amounts as shall be required so that the net amounts received and retained by
the Trust and the Property Trustee after paying such taxes, duties, assessments
or other governmental charges shall be equal to the amounts the Trust and the
Property Trustee would have received had no such taxes, duties, assessments or
other government charges been imposed.

         Section 2.5. Execution and Authentication.

         (a)      The Debentures shall be signed on behalf of the Company by its
Chief Executive Officer, President or one of its Senior or Executive Vice
Presidents, under its corporate seal

                                       16
<Page>

attested by its Secretary or one of its Assistant Secretaries. Signatures may be
in the form of a manual or facsimile signature. The Company may use the
facsimile signature of any Person who shall have been a Chief Executive Officer,
President or Senior or Executive Vice President thereof, or of any Person who
shall have been a Secretary or Assistant Secretary thereof, notwithstanding the
fact that at the time the Debentures shall be authenticated and delivered or
disposed of such Person shall have ceased to be the Chief Executive Officer,
President or a Senior or Executive Vice President, or the Secretary or an
Assistant Secretary, of the Company (and any such signature shall be binding on
the Company). The seal of the Company may be in the form of a facsimile of such
seal and may be impressed, affixed, imprinted or otherwise reproduced on the
Debentures. The Debentures may contain such notations, legends or endorsements
required by law, stock exchange rule or usage. Each Debenture shall be dated the
date of its authentication by the Trustee.

         (b)      A Debenture shall not be valid until manually authenticated by
an authorized signatory of the Trustee, or by an Authenticating Agent. Such
signature shall be conclusive evidence that the Debenture so authenticated has
been duly authenticated and delivered hereunder and that the holder is entitled
to the benefits of this Indenture.

         (c)      At any time and from time to time after the execution and
delivery of this Indenture, the Company may deliver Debentures executed by the
Company to the Trustee for authentication, together with a written order of the
Company for the authentication and delivery of such Debentures signed by its
Chief Executive Officer, President or any Senior or Executive Vice President and
its Treasurer or any Assistant Treasurer, and the Trustee in accordance with
such written order shall authenticate and deliver such Debentures.

         (d)      In authenticating such Debentures and accepting the additional
responsibilities under this Indenture in relation to such Debentures, the
Trustee shall be entitled to receive, and (subject to Section 9.1) shall be
fully protected in relying upon, an Opinion of Counsel stating that the form and
terms thereof have been established in conformity with the provisions of this
Indenture.

         (e)      The Trustee shall not be required to authenticate such
Debentures if the issue of such Debentures pursuant to this Indenture shall
affect the Trustee's own rights, duties or immunities under the Debentures and
this Indenture or otherwise in a manner that is not reasonably acceptable to the
Trustee.

         Section 2.6. Registration of Transfer and Exchange.

         (a)      Debentures may be exchanged upon presentation thereof at the
office or agency of the Company designated for such purpose in the Borough of
Manhattan, the City of New York, or at the office of the Debenture Registrar,
for other Debentures and for a like aggregate principal amount in denominations
of integral multiples of $25, upon payment of a sum sufficient to cover any tax
or other governmental charge in relation thereto, all as provided in this
Section 2.6. In respect of any Debentures so surrendered for exchange, the
Company shall execute, the Trustee shall authenticate and such office or agency
shall deliver in exchange therefor the Debenture or Debentures that the
Debentureholder making the exchange shall be entitled to receive, bearing
numbers not contemporaneously outstanding.

                                       17
<Page>

         (b)      The Company shall keep, or cause to be kept, at its office or
agency designated for such purpose in the Borough of Manhattan, the City of New
York, or at the office of the Debenture Registrar, or such other location
designated by the Company a register or registers (herein referred to as the
"Debenture Register") in which, subject to such reasonable regulations as the
Debenture Registrar (as defined below) may prescribe, the Company shall register
the Debentures and the transfers of Debentures as in this Article II provided
and which at all reasonable times shall be open for inspection by the Trustee.
The registrar for the purpose of registering Debentures and transfer of
Debentures as herein provided shall initially be the Trustee and thereafter as
may be appointed by the Company as authorized by Board Resolution (the
"Debenture Registrar"). Upon surrender for transfer of any Debenture at the
office or agency of the Company designated for such purpose, the Company shall
execute, the Trustee shall authenticate and such office or agency shall deliver
in the name of the transferee or transferees a new Debenture or Debentures for a
like aggregate principal amount. All Debentures presented or surrendered for
exchange or registration of transfer, as provided in this Section 2.6, shall be
accompanied (if so required by the Company or the Debenture Registrar) by a
written instrument or instruments of transfer, in form satisfactory to the
Company or the Debenture Registrar, duly executed by the registered holder or by
such holder's duly authorized attorney in writing.

         (c)      No service charge shall be made for any exchange or
registration of transfer of Debentures, or issue of new Debentures in case of
partial redemption, but the Company may require payment of a sum sufficient to
cover any tax or other governmental charge in relation thereto, other than
exchanges pursuant to Section 2.7, Section 3.5(b) and Section 11.4 not involving
any transfer.

         (d)      The Company shall not be required (i) to issue, exchange or
register the transfer of any Debentures during a period beginning at the opening
of business fifteen (15) days before the day of the mailing of a notice of
redemption of less than all the Outstanding Debentures and ending at the close
of business on the day of such mailing; nor (ii) to register the transfer of or
exchange any Debentures or portions thereof called for redemption.

         (e)      Debentures may only be transferred, in whole or in part, in
accordance with the terms and conditions set forth in this Indenture. Any
transfer or purported transfer of any Debenture not made in accordance with this
Indenture shall be null and void.

         Section 2.7. Temporary Debentures. Pending the preparation of
definitive Debentures, the Company may execute, and the Trustee shall
authenticate and deliver, temporary Debentures (printed, lithographed, or
typewritten). Such temporary Debentures shall be substantially in the form of
the definitive Debentures in lieu of which they are issued, but with such
omissions, insertions and variations as may be appropriate for temporary
Debentures, all as may be determined by the Company. Every temporary Debenture
shall be executed by the Company and be authenticated by the Trustee upon the
same conditions and in substantially the same manner, and with like effect, as
the definitive Debentures. Without unnecessary delay, the Company shall execute
and shall furnish definitive Debentures and thereupon any or all temporary
Debentures may be surrendered in exchange therefor (without charge to the
holders), at the office or agency of the Company designated for the purpose and
the Trustee shall authenticate and such office or agency shall deliver in
exchange for such temporary Debentures an equal aggregate principal amount of
definitive Debentures, unless the Company advises the Trustee to the effect that
definitive Debentures need not be authenticated and furnished until further
notice from the

                                       18
<Page>

Company. Until so exchanged, the temporary Debentures shall be entitled to the
same benefits under this Indenture as definitive Debentures authenticated and
delivered hereunder.

         Section 2.8. Mutilated, Destroyed, Lost or Stolen Debentures.

         (a)      In case any temporary or definitive Debenture shall become
mutilated or be destroyed, lost or stolen, the Company (subject to the next
succeeding sentence) shall execute, and upon the Company's request the Trustee
(subject as aforesaid) shall authenticate and deliver, a new Debenture bearing a
number not contemporaneously outstanding, in exchange and substitution for the
mutilated Debenture, or in lieu of and in substitution for the Debenture so
destroyed, lost, stolen or mutilated. In every case the applicant for a
substituted Debenture 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 the applicant's Debenture and of the ownership thereof. The
Trustee shall authenticate any such substituted Debenture and deliver the same
upon the written request or authorization of the Chief Executive Officer,
President or any Senior or Executive Vice President and the Treasurer or any
Assistant Treasurer of the Company. Upon the issuance of any substituted
Debenture, the Company may require the payment of a sum sufficient to cover any
tax or other governmental charge that may be imposed in relation thereto and any
other expenses (including the fees and expenses of the Trustee) connected
therewith. In case any Debenture that has matured or is about to mature shall
become mutilated or be destroyed, lost or stolen, the Company may, instead of
issuing a substitute Debenture, pay or authorize the payment of the same
(without surrender thereof except in the case of a mutilated Debenture) if the
applicant for such payment shall furnish to the Company and the Trustee such
security or indemnity as they may require to save them harmless, and, in case of
destruction, loss or theft, evidence to the satisfaction of the Company and the
Trustee of the destruction, loss or theft of such Debenture and of the ownership
thereof.

         (b)      Every replacement Debenture issued pursuant to the provisions
of this Section 2.8 shall constitute an additional contractual obligation of the
Company whether or not the mutilated, destroyed, lost or stolen Debenture shall
be found at any time, or be enforceable by anyone, and shall be entitled to all
the benefits of this Indenture equally and proportionately with any and all
other Debentures duly issued hereunder. All Debentures shall be held and owned
upon the express condition that the foregoing provisions are exclusive with
respect to the replacement or payment of mutilated, destroyed, lost or stolen
Debentures, and shall preclude (to the extent lawful) 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 2.9. Cancellation. All Debentures surrendered for the purpose
of payment, redemption, exchange or registration of transfer shall, if
surrendered to the Company or any Paying Agent, be delivered to the Trustee for
cancellation, or, if surrendered to the Trustee, shall be canceled by it, and no
Debentures shall be issued in lieu thereof except as expressly required or
permitted by any of the provisions of this Indenture. On request of the Company
at the time of such surrender, the Trustee shall deliver to the Company canceled
Debentures held by the Trustee. In the absence of such request the Trustee may
dispose of canceled Debentures in accordance with its standard procedures and
deliver a certificate of disposition to the Company.

                                       19
<Page>

If the Company shall otherwise acquire any of the Debentures, however, such
acquisition shall not operate as a redemption or satisfaction of the
indebtedness represented by such Debentures unless and until the same are
delivered to the Trustee for cancellation.

         Section 2.10. Benefit of Indenture. Nothing in this Indenture or in the
Debentures, express or implied, shall give or be construed to give to any
Person, other than the parties hereto and the holders of the Debentures (and,
with respect to the provisions of Article XVI, the holders of the Senior
Indebtedness) any legal or equitable right, remedy or claim under or in respect
of this Indenture, or under any covenant, condition or provision herein
contained; all such covenants, conditions and provisions being for the sole
benefit of the parties hereto and of the holders of the Debentures (and, with
respect to the provisions of Article XVI, the holders of the Senior
Indebtedness).

         Section 2.11. Authentication Agent.

         (a)      So long as any of the Debentures remain Outstanding there may
be an Authenticating Agent for any or all such Debentures, which Authenticating
Agent the Trustee shall have the right to appoint. Said Authenticating Agent
shall be authorized to act on behalf of the Trustee to authenticate Debentures
issued upon exchange, transfer or partial redemption thereof, and Debentures so
authenticated shall be entitled to the benefits of this Indenture and shall be
valid and obligatory for all purposes as if authenticated by the Trustee
hereunder. All references in this Indenture to the authentication of Debentures
by the Trustee shall be deemed to include authentication by an Authenticating
Agent. Each Authenticating Agent shall be acceptable to the Company and shall be
a corporation that has a combined capital and surplus, as most recently reported
or determined by it, sufficient under the laws of any jurisdiction under which
it is organized or in which it is doing business to conduct a trust business,
and that is otherwise authorized under such laws to conduct such business and is
subject to supervision or examination by federal or state authorities. If at any
time any Authenticating Agent shall cease to be eligible in accordance with
these provisions, it shall resign immediately.

         (b)      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 (and upon request by the Company shall) terminate the agency of any
Authenticating Agent by giving written notice of termination to such
Authenticating Agent and to the Company. Upon resignation, termination or
cessation of eligibility of any Authenticating Agent, the Trustee may appoint an
eligible successor Authenticating Agent acceptable to the Company. Any successor
Authenticating Agent, upon acceptance of its appointment hereunder, shall become
vested with all the rights, powers and duties of its predecessor hereunder as if
originally named as an Authenticating Agent pursuant hereto.

                                  ARTICLE III.
                            REDEMPTION OF DEBENTURES

         Section 3.1. Redemption. Subject to the Company having received prior
approval of the Federal Reserve, if then required under the applicable capital
guidelines, policies or regulations of the Federal Reserve, the Company may
redeem the Debentures issued hereunder on and after the dates set forth in and
in accordance with the terms of this Article III.

                                       20
<Page>

         Section 3.2. Special Event Redemption. Subject to the Company having
received the prior approval of the Federal Reserve, if then required under the
applicable capital guidelines, policies or regulations of the Federal Reserve,
if a Special Event has occurred and is continuing, then, notwithstanding Section
3.3(a) but subject to Section 3.3(b), the Company shall have the right upon not
less than thirty (30) days' nor more than sixty (60) days' notice to the holders
of the Debentures to redeem the Debentures, in whole but not in part, for cash
within 180 days following the occurrence of such Special Event (the "180-Day
Period") at a redemption price equal to 100% of the principal amount to be
redeemed plus any accrued and unpaid interest thereon to the date of such
redemption (the "Redemption Price"), provided that if at the time there is
available to the Company the opportunity to eliminate, within the 180-Day
Period, a Tax Event by taking some ministerial action (a "Ministerial Action"),
such as filing a form or making an election, or pursuing some other similar
reasonable measure which has no adverse effect on the Company, the Trust or the
holders of the Trust Securities issued by the Trust, the Company shall pursue
such Ministerial Action in lieu of redemption, and, provided further, that the
Company shall have no right to redeem the Debentures pursuant to this Section
3.2 while it is pursuing any Ministerial Action pursuant to its obligations
hereunder, and, provided further, that, if it is determined that the taking of a
Ministerial Action would not eliminate the Tax Event within the 180 Day Period,
the Company's right to redeem the Debentures pursuant to this Section 3.2 shall
be restored and it shall have no further obligations to pursue the Ministerial
Action. The Redemption Price shall be paid prior to 12:00 noon, New York time,
on the date of such redemption or such earlier time as the Company determines,
provided that the Company shall deposit with the Trustee an amount sufficient to
pay the Redemption Price by 10:00 a.m., New York time, on the date such
Redemption Price is to be paid.

         Section 3.3. Optional Redemption by the Company.

         (a)      Subject to the provisions of Section 3.3(c), except as
otherwise may be specified in this Indenture, the Company shall have the right
to redeem the Debentures, in whole or in part, from time to time, on or after
September 30, 2007, at a Redemption Price equal to 100% of the principal amount
to be redeemed plus any accrued and unpaid interest thereon to the date of such
redemption. Any redemption pursuant to this Section 3.3(a) shall be made upon
not less than thirty (30) days' nor more than sixty (60) days' notice to the
holder of the Debentures, at the Redemption Price. If the Debentures are only
partially redeemed pursuant to this Section 3.3(a), the Debentures shall be
redeemed pro rata or by lot or in such other manner as the Trustee shall deem
appropriate and fair in its discretion. The Redemption Price shall be paid prior
to 12:00 noon, New York time, on the date of such redemption or at such earlier
time as the Company determines provided that the Company shall deposit with the
Trustee an amount sufficient to pay the Redemption Price by 10:00 a.m., New York
time, on the date such Redemption Price is to be paid.

         (b)      Subject to the provisions of Section 3.3(c), the Company shall
have the right to redeem Debentures at any time and from time to time in a
principal amount equal to the Liquidation Amount (as defined in the Trust
Agreement) of any Preferred Securities purchased and beneficially owned by the
Company, plus an additional principal amount of Debentures equal to the
Liquidation Amount of that number of Common Securities that bears the same
proportion to the total number of Common Securities then outstanding as the
number of Preferred Securities to be redeemed bears to the total number of
Preferred Securities then outstanding. Such Debentures shall be redeemed
pursuant to this Section 3.3(b) only in exchange

                                       21
<Page>

for and upon surrender by the Company to the Property Trustee of the Preferred
Securities and a proportionate amount of Common Securities, whereupon the
Property Trustee shall cancel the Preferred Securities and Common Securities so
surrendered and a Like Amount (as defined in the Trust Agreement) of Debentures
shall be extinguished by the Trustee and shall no longer be deemed Outstanding.

         (c)      If a partial redemption of the Debentures would result in the
termination of inclusion of the Preferred Securities issued by the Trust from
the Nasdaq National Market or the delisting of the Preferred Securities issued
by the Trust from any national securities exchange or other organization on
which the Preferred Securities are then included, listed or quoted, the Company
shall not be permitted to effect such partial redemption and may only redeem the
Debentures in whole.

         Section 3.4. Notice of Redemption.

         (a)      Except in the case of a redemption pursuant to Section 3.3(b),
in case the Company shall desire to exercise such right to redeem all or, as the
case may be, a portion of the Debentures in accordance with the right reserved
so to do, the Company shall, or shall cause the Trustee to upon receipt of
forty-five (45) days' written notice from the Company (which notice shall, in
the event of a partial redemption, include a representation to the effect that
such partial redemption will not result in the delisting of the Preferred
Securities as described in Section 3.3(c) above), give notice of such redemption
to holders of the Debentures to be redeemed by mailing, first class postage
prepaid, a notice of such redemption not less than thirty (30) days and not more
than sixty (60) days before the date fixed for redemption to such holders at
their last addresses as they shall appear upon the Debenture Register unless a
shorter period is specified in the Debentures to be redeemed. Any notice that is
mailed in the manner herein provided shall be conclusively presumed to have been
duly given, whether or not the registered holder receives the notice. In any
case, failure duly to give such notice to the holder of any Debenture designated
for redemption in whole or in part, or any defect in the notice, shall not
affect the validity of the proceedings for the redemption of any other
Debentures. In the case of any redemption of Debentures prior to the expiration
of any restriction on such redemption provided in the terms of such Debentures
or elsewhere in this Indenture, the Company shall furnish the Trustee with an
Officers' Certificate evidencing compliance with any such restriction. Each such
notice of redemption shall specify the date fixed for redemption and the
Redemption Price and shall state that payment of the Redemption Price shall be
made at the office or agency of the Company in the Borough of Manhattan, the
City of New York or at the Corporate Trust Office, upon presentation and
surrender of such Debentures, that interest accrued to the date fixed for
redemption shall be paid as specified in said notice and that from and after
said date interest shall cease to accrue. If less than all the Debentures are to
be redeemed, the notice to the holders of the Debentures shall specify the
particular Debentures to be redeemed. If the Debentures are to be redeemed in
part only, the notice shall state the portion of the principal amount thereof to
be redeemed and shall state that on and after the redemption date, upon
surrender of such Debenture, a new Debenture or Debentures in principal amount
equal to the unredeemed portion thereof shall be issued.

         (b)      Except in the case of a redemption pursuant to Section 3.3(b),
if less than all the Debentures are to be redeemed, the Company shall give the
Trustee at least forty-five (45) days' written notice in advance of the date
fixed for redemption as to the aggregate principal amount of

                                       22
<Page>

Debentures to be redeemed, and thereupon the Trustee shall select, pro rata or
by lot or in such other manner as it shall deem appropriate and fair in its
discretion, the portion or portions (equal to $25 or any integral multiple
thereof) of the Debentures to be redeemed and shall thereafter promptly notify
the Company in writing of the numbers of the Debentures to be redeemed, in whole
or in part. The Company may, if and whenever it shall so elect pursuant to the
terms hereof, by delivery of instructions signed on its behalf by its Chief
Executive Officer, President or any Senior or Executive Vice President, instruct
the Trustee or any Paying Agent to call all or any part of the Debentures for
redemption and to give notice of redemption in the manner set forth in this
Section 3.4, such notice to be in the name of the Company or its own name as the
Trustee or such Paying Agent may deem advisable. In any case in which notice of
redemption is to be given by the Trustee or any such Paying Agent, the Company
shall deliver or cause to be delivered to, or permit to remain with, the Trustee
or such Paying Agent, as the case may be, such Debenture Register, transfer
books or other records, or suitable copies or extracts therefrom, sufficient to
enable the Trustee or such Paying Agent to give any notice by mail that may be
required under the provisions of this Section 3.4.

         Section 3.5. Payment upon Redemption.

         (a)      If the giving of notice of redemption shall have been
completed as above provided, the Debentures or portions of Debentures to be
redeemed specified in such notice shall become due and payable on the date and
at the place stated in such notice at the applicable Redemption Price, and
interest on such Debentures or portions of Debentures shall cease to accrue on
and after the date fixed for redemption, unless the Company shall default in the
payment of such Redemption Price with respect to any such Debenture or portion
thereof. On presentation and surrender of such Debentures on or after the date
fixed for redemption at the place of payment specified in the notice, said
Debentures shall be paid and redeemed at the Redemption Price (but if the date
fixed for redemption is an Interest Payment Date, the interest installment
payable on such date shall be payable to the registered holder at the close of
business on the applicable record date pursuant to Section 3.3).

         (b)      Upon presentation of any Debenture that is to be redeemed in
part only, the Company shall execute and the Trustee shall authenticate and the
office or agency where the Debenture is presented shall deliver to the holder
thereof, at the expense of the Company, a new Debenture of authorized
denomination in principal amount equal to the unredeemed portion of the
Debenture so presented.

         Section 3.6. No Sinking Fund. The Debentures are not entitled to the
benefit of any sinking fund.

                                   ARTICLE IV.
                      EXTENSION OF INTEREST PAYMENT PERIOD

         Section 4.1. Extension of Interest Payment Period. So long as no Event
of Default has occurred and is continuing, the Company shall have the right, at
any time and from time to time during the term of the Debentures, to defer
payments of interest by extending the interest payment period of such Debentures
for a period not exceeding twenty (20) consecutive quarters (the "Extension
Period"), during which Extension Period no interest shall be due and payable;
provided that no Extension Period may extend beyond the Maturity Date or end on
a date other

                                       23
<Page>

than an Interest Payment Date. To the extent permitted by applicable law,
interest, the payment of which has been deferred because of the extension of the
interest payment period pursuant to this Section 4.1, shall bear interest
thereon at the Coupon Rate compounded quarterly for each quarter of the
Extension Period ("Compounded Interest"). At the end of the Extension Period,
the Company shall calculate (and deliver such calculation to the Trustee) and
pay all interest accrued and unpaid on the Debentures, including any Additional
Payments and Compounded Interest (together, "Deferred Payments") that shall be
payable to the holders of the Debentures in whose names the Debentures are
registered in the Debenture Register on the first record date after the end of
the Extension Period. Before the termination of any Extension Period, the
Company may further extend such period so long as no Event of Default has
occurred and is continuing, provided that such period together with all such
further extensions thereof shall not exceed twenty (20) consecutive quarters, or
extend beyond the Maturity Date of the Debentures or end on a date other than an
Interest Payment Date. Upon the termination of any Extension Period and upon the
payment of all Deferred Payments then due, the Company may commence a new
Extension Period, subject to the foregoing requirements. No interest shall be
due and payable during an Extension Period, except at the end thereof, but the
Company may prepay at any time all or any portion of the interest accrued during
an Extension Period.

         Section 4.2. Notice Of Extension.

         (a)      If the Property Trustee is the only registered holder of the
Debentures at the time the Company selects an Extension Period, the Company
shall give written notice to the Administrative Trustees, the Property Trustee
and the Trustee of its selection of such Extension Period at least two Business
Days before the earlier of (i) the next succeeding date on which Distributions
on the Trust Securities issued by the Trust are payable; or (ii) the date the
Trust is required to give notice of the record date, or the date such
Distributions are payable, to the Nasdaq National Market or other applicable
exchange or self-regulatory organization or to holders of the Preferred
Securities issued by the Trust, but in any event at least one Business Day
before such record date.

         (b)      If the Property Trustee is not the only holder of the
Debentures at the time the Company selects an Extension Period, the Company
shall give the holders of the Debentures and the Trustee written notice of its
selection of such Extension Period at least two Business Days before the earlier
of (i) the next succeeding Interest Payment Date; or (ii) the date the Company
is required to give notice of the record or payment date of such interest
payment to the Nasdaq National Market or other applicable exchange or
self-regulatory organization or to holders of the Debentures.

         (c)      The quarter in which any notice is given pursuant to
paragraphs (a) or (b) of this Section 4.2 shall be counted as one of the twenty
(20) quarters permitted in the maximum Extension Period permitted under Section
4.1.

         Section 4.3. Limitation on Transactions. If (a) the Company shall
exercise its right to defer payment of interest as provided in Section 4.1; or
(b) there shall have occurred and be continuing any Event of Default, then (i)
neither the Company nor any of its subsidiaries shall declare or pay any
dividend on, make any distributions with respect to, or redeem, purchase,
acquire or make a liquidation payment with respect to, any of its capital stock
(other than (A) dividends or distributions in common stock of the Company, or
any declaration of a non-cash

                                       24
<Page>

dividend in connection with the implementation of a shareholder rights plan, or
the issuance of stock under any such plan in the future, or the redemption or
repurchase of any such rights pursuant thereto, (B) purchases of common stock of
the Company related to the rights under any of the Company's benefit plans for
its directors, officers or employees, (C) as a result of a reclassification of
its capital stock for another class of its capital stock, or (D) dividends or
distributions made by a subsidiary of the Company, provided that such dividends
or distributions are necessary in order for such subsidiary to qualify as a
"real estate investment trust" under Sections 856 and 857 of the Code or are
made to the Company or to any subsidiary of the Company); (ii) the Company shall
not make, or allow any of its subsidiaries to make, any payment of interest,
principal or premium, if any, or repay, repurchase or redeem any debt securities
issued by the Company which rank pari passu with (including the Company's
Floating Rate Junior Subordinated Deferrable Interest Debentures due 2028 issued
to Coal City Capital Trust I) or junior to the Debentures or make, or allow any
of its subsidiaries to make, any guarantee payments with respect to any
guarantee by the Company of the debt securities of any subsidiary of the Company
if such guarantee ranks pari passu with or junior in interest to the Debentures;
provided, however, that notwithstanding the foregoing the Company may make
payments pursuant to its obligations under the Preferred Securities Guarantee;
and (iii) the Company shall not redeem, purchase or acquire less than all of the
Outstanding Debentures or any of the Preferred Securities.

                                   ARTICLE V.
                       PARTICULAR COVENANTS OF THE COMPANY

         Section 5.1. Payment of Principal and Interest. The Company shall duly
and punctually pay or cause to be paid the principal of and interest on the
Debentures at the time and place and in the manner provided herein. Each such
payment of the principal of and interest on the Debentures shall relate only to
the Debentures, shall not be combined with any other payment of the principal of
or interest on any other obligation of the Company, and shall be clearly and
unmistakably identified as pertaining to the Debentures.

         Section 5.2. Maintenance of Agency. So long as any of the Debentures
remain Outstanding, the Company shall maintain, or shall cause to be maintained,
an office or agency in the Borough of Manhattan, the City of New York, and at
such other location or locations as may be designated as provided in this
Section 5.2, where (a) Debentures may be presented for payment; (b) Debentures
may be presented as hereinabove authorized for registration of transfer and
exchange; and (c) notices and demands to or upon the Company in respect of the
Debentures and this Indenture may be given or served, such designation to
continue with respect to such office or agency until the Company shall, by
written notice signed by its President or a Senior or Executive Vice President
and delivered to the Trustee, designate some other office or agency for such
purposes or any of them. If at any time the Company shall fail to maintain any
such required office or agency or shall fail to furnish the Trustee with the
address thereof, such presentations, notices and demands may be made or served
at the Corporate Trust Office of the Trustee, and the Company hereby appoints
the Trustee as its agent to receive all such presentations, notices and demands.
In addition to any such office or agency, the Company may from time to time
designate one or more offices or agencies outside of the Borough of Manhattan,
the City of New York, where the Debentures may be presented for registration or
transfer and for exchange in the manner provided herein, 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 the Borough of Manhattan, the City of New

                                       25
<Page>

York, for the purposes above mentioned. The Company shall give the Trustee
prompt written notice of any such designation or rescission thereof.

         Section 5.3. Paying Agents.

         (a)      The Company shall be the initial Paying Agent. If the Company
shall appoint one or more Paying Agents for the Debentures, other than the
Trustee, the Company shall cause each such Paying Agent to execute and deliver
to the Trustee an instrument in which such agent shall agree with the Trustee,
subject to the provisions of this Section 5.3:

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

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

                  (iii)    that it shall, at any time during the continuance of
         any failure referred to in the preceding paragraph (a)(ii) above, upon
         the written request of the Trustee, forthwith pay to the Trustee all
         sums so held in trust by such Paying Agent; and

                  (iv)     that it shall perform all other duties of Paying
         Agent as set forth in this Indenture.

         (b)      If the Company shall act as its own Paying Agent with respect
to the Debentures, it shall on or before each due date of the principal of or
interest on such Debentures, set aside, segregate and hold in trust for the
benefit of the Persons entitled thereto a sum sufficient to pay such principal
or interest so becoming due on Debentures until such sums shall be paid to such
Persons or otherwise disposed of as herein provided and shall promptly notify
the Trustee of such action, or any failure (by it or any other obligor on such
Debentures) to take such action. Whenever the Company shall have one or more
Paying Agents for the Debentures, it shall, prior to each due date of the
principal of or interest on any Debentures, deposit with the Paying Agent a sum
sufficient to pay the principal or interest so becoming due, such sum to be held
in trust for the benefit of the Persons entitled to such principal or interest,
and (unless such Paying Agent is the Trustee) the Company shall promptly notify
the Trustee of this action or failure so to act.

         (c)      Notwithstanding anything in this Section 5.3 to the contrary,
(i) the agreement to hold sums in trust as provided in this Section 5.3 is
subject to the provisions of Section 13.3 and 13.4; and (ii) the Company may at
any time, for the purpose of obtaining the satisfaction and discharge of this
Indenture or for any other purpose, pay, or direct any Paying Agent to pay, to
the Trustee all sums held in trust by the Company or such Paying Agent, such
sums to be held by the Trustee upon the same terms and conditions as those upon
which such sums were held by the Company or such Paying Agent; and, upon such
payment by any Paying Agent to the Trustee, such Paying Agent shall be released
from all further liability with respect to such money.

                                       26
<Page>

         Section 5.4. Appointment to Fill Vacancy in Office of the Trustee. The
Company, whenever necessary to avoid or fill a vacancy in the office of Trustee,
shall appoint, in the manner provided in Section 9.11, a Trustee, so that there
shall at all times be a Trustee hereunder.

         Section 5.5. Compliance with Consolidation Provisions. The Company
shall not, while any of the Debentures remain Outstanding, consolidate with, or
merge into, or merge into itself, or sell or convey all or substantially all of
its property to any other company unless the provisions of Article XII hereof
are complied with.

         Section 5.6. Limitation on Transactions. If Debentures are issued to
the Trust or a trustee of the Trust in connection with the issuance of Trust
Securities by the Trust and (a) there shall have occurred and be continuing an
Event of Default; (b) the Company shall be in default with respect to its
payment of any obligations under the Preferred Securities Guarantee relating to
the Trust; or (c) if the Company shall have given notice of its election to
defer payments of interest on such Debentures by extending the interest payment
period as provided in this Indenture and such Extension Period, or any extension
thereof, shall be continuing, then (i) neither the Company nor any of its
subsidiaries shall declare or pay any dividend on, make any distributions with
respect to, or redeem, purchase, acquire or make a liquidation payment with
respect to, any of its capital stock (other than (A) dividends or distributions
in common stock of the Company, or any declaration of a non-cash dividend in
connection with the implementation of a shareholder rights plan, or the issuance
of stock under any such plan in the future, or the redemption or repurchase of
any such rights pursuant thereto, (B) purchases of common stock of the Company
related to the rights under any of the Company's benefit plans for its
directors, officers or employees, (C) as a result of a reclassification of its
capital stock, or (D) dividends or distributions made by a subsidiary of the
Company, provided that such dividends or distributions are necessary in order
for such subsidiary to qualify as a "real estate investment trust" under
Sections 856 and 857 of the Code or are made to the Company or to any
subsidiary of the Company); (ii) the Company shall not make, or allow any of its
subsidiaries to make, any payment of principal, interest or premium, if any, or
repay, repurchase or redeem any debt securities issued by the Company which rank
pari passu with (including the Company's Floating Rate Junior Subordinated
Deferrable Interest Debentures due 2028 issued to Coal City Capital Trust I) or
junior in interest to the Debentures or make, or allow any of its subsidiaries
to make, any guarantee payments with respect to any guarantee by the Company of
the debt securities of any subsidiary of the Company if such guarantee ranks
pari passu with or junior in interest to the Debentures; provided, however, that
the Company may make payments pursuant to its obligations under the Preferred
Securities Guarantee; and (iii) the Company shall not redeem, purchase or
acquire less than all of the Outstanding Debentures or any of the Preferred
Securities.

         Section 5.7. Covenants as to the Trust. For so long as the Trust
Securities of the Trust remain outstanding, the Company (a) shall maintain 100%
direct or indirect ownership of the Common Securities of the Trust; provided,
however, that any permitted successor of the Company under this Indenture may
succeed to the Company's ownership of the Common Securities; (b) shall not
voluntarily terminate, wind up or liquidate the Trust, except upon prior
approval of the Federal Reserve if then so required under applicable capital
guidelines, policies or regulations of the Federal Reserve; (c) shall use its
reasonable efforts to cause the Trust (i) to remain a business trust (and to
avoid involuntary termination, winding up or liquidation), except in connection
with a distribution of Debentures, the redemption of all of the Trust Securities
of the Trust or certain mergers, consolidations or amalgamations, each as
permitted by the Trust Agreement; and (ii) to otherwise continue not to be
treated as an association taxable as a corporation or partnership for United
States federal income tax purposes; (d) shall use its

                                       27
<Page>

reasonable efforts to cause each holder of Trust Securities to be treated as
owning an individual beneficial interest in the Debentures; and (e) including
any successor to the Company, shall use its best efforts to maintain the
eligibility of the Preferred Securities for inclusion, quotation or listing on
any national securities exchange or other organization on which the Preferred
Securities are then included, quoted or listed (including, if applicable, the
Nasdaq National Market) and shall use reasonable efforts to keep the Preferred
Securities so quoted or listed for so long as the Preferred Securities remain
outstanding. In connection with the distribution of the Debentures to the
holders of the Preferred Securities issued by the Trust upon a Dissolution
Event, the Company shall use its best efforts to list or include such Debentures
on a national securities exchange or comparable automated quotation system or to
list such Debentures on such other exchange as the Preferred Securities are then
listed.

         Section 5.8. Covenants as to Purchases. Except upon the exercise by the
Company of its right to redeem the Debentures pursuant to Section 3.2 upon the
occurrence and continuation of a Special Event or pursuant to Section 3.3(b) in
connection with the purchase of Preferred Securities by the Company, the Company
shall not purchase any Debentures, in whole or in part, from the Trust prior to
September 30, 2007.

         Section 5.9. Waiver of Usury, Stay or Extension Laws. The Company shall
not at any time insist upon, or plead, or in any manner whatsoever claim or take
the benefit or advantage of, any usury, stay or extension law wherever enacted,
now or at any time hereafter in force, which may affect the covenants or the
performances of this Indenture, and the Company (to the extent that it may
lawfully do so) hereby expressly waives all benefit or advantage of any such
law, and covenants that it will not hinder, delay or impede the execution of any
power herein granted to the Trustee, but will suffer and permit the extension of
every such power as though no such law had been enacted.

         Section 5.10. Limitation on Additional Junior Indebtedness. The Company
shall not, and it shall not cause or permit any Affiliate of the Company to,
incur, issue or be obligated on any Additional Junior Indebtedness, either
directly or indirectly, by way of guarantee, suretyship or otherwise, other than
Additional Junior Indebtedness that, by its terms, is expressly stated to be (a)
junior and subordinate in all respects to the Debentures or (b) pari passu and
rank equally in all respects with the Debentures.

         Notwithstanding the foregoing, the limitations of this Section 5.10
shall not in any way preclude the Company from merging with or into, or from
acquiring or being acquired by, another Person ("Other Person") (including by
way of merger, stock purchase or acquisition of assets) that is not an Affiliate
of the Company in an arm's length transaction entered into in good faith, even
though the Person surviving such merger or acquisition may, immediately
following such merger or acquisition, be obligated under Additional Junior
Indebtedness of the type that would otherwise not be permitted by this Section
5.10 that was incurred by the Other Person prior to such merger or acquisition
("Pre-Existing Indebtedness"); provided, however, that after such merger or
acquisition, the limitation on Additional Junior Indebtedness set forth in this
Section 5.10 shall continue to apply to the Company (in the event that it is the
surviving corporation in such merger transaction or the acquiror in such
acquisition transaction) and shall apply to the Other Person (in the event that
it is the surviving corporation in such merger transaction or the acquiror in
such acquisition transaction) whether or not such Other Person is

                                       28
<Page>

expressly made a party hereto, with respect to all Additional Junior
Indebtedness other than Pre- Existing Indebtedness.

                                   ARTICLE VI.
                     THE DEBENTUREHOLDERS' LISTS AND REPORTS
                         BY THE COMPANY AND THE TRUSTEE

         Section 6.1. The Company to Furnish the Trustee Names and Addresses of
the Debentureholders.

         The Company shall furnish or cause to be furnished to the Trustee (a)
on a quarterly basis on each regular record date (as described in Section 2.4) a
list, in such form as the Trustee may reasonably require, of the names and
addresses of the holders of the Debentures as of such regular record date,
provided that the Company shall not be obligated to furnish or cause to be
furnished such list at any time that the list shall not differ in any respect
from the most recent list furnished to the Trustee by the Company (in the event
the Company fails to provide such list on a quarterly basis, the Trustee shall
be entitled to rely on the most recent list provided by the Company); and (b) at
such other times as the Trustee may request in writing within thirty (30) days
after the receipt by the Company of any such request, a list in similar form and
content as of a date not more than fifteen (15) days prior to the time such list
is furnished; provided, however, that, in either case, no such list need be
furnished if the Trustee shall be the Debenture Registrar.

         Section 6.2. Preservation of Information Communications with the
Debentureholders.

         (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 Debentures contained in the most recent list furnished to it as
provided in Section 6.1 and as to the names and addresses of holders of
Debentures received by the Trustee in its capacity as Debenture Registrar for
the Debentures (if acting in such capacity).

         (b)      The Trustee may destroy any list furnished to it as provided
in Section 6.1 upon receipt of a new list so furnished.

         (c)      Debentureholders may communicate as provided in Section 312(b)
of the Trust Indenture Act with other Debentureholders with respect to their
rights under this Indenture or under the Debentures.

         Section 6.3. Reports by the Company.

         (a)      The Company covenants and agrees to file with the Trustee,
within fifteen (15) days after the Company is required to file the same with the
Commission, copies of the annual reports and of the information, documents and
other reports (or copies of such portions of any of the foregoing as the
Commission may from time to time by rules and regulations prescribe) that the
Company may be required to file with the Commission pursuant to Section 13 or
Section 15(d) of the Exchange Act; or, if the Company is not required to file
information, documents or reports pursuant to either of such sections, then to
file with the Trustee and the Commission, in accordance with the rules and
regulations prescribed from time to time by the Commission, such of the
supplementary and periodic information, documents and reports that may be
required

                                       29
<Page>

pursuant to Section 13 of the Exchange Act in respect of a security listed and
registered on a national securities exchange as may be prescribed from time to
time in such rules and regulations.

         (b)      The Company covenants and agrees to file with the Trustee and
the Commission, in accordance with the rules and regulations prescribed from
time to time by the Commission, such additional information, documents and
reports with respect to compliance by the Company with the conditions and
covenants provided for in this Indenture as may be required from time to time by
such rules and regulations.

         (c)      The Company covenants and agrees to transmit by mail, first
class postage prepaid, or reputable overnight delivery service that provides for
evidence of receipt, to the Debentureholders, as their names and addresses
appear upon the Debenture Register, within thirty (30) days after the filing
thereof with the Trustee, such summaries of any information, documents and
reports required to be filed by the Company pursuant to subsections (a) and (b)
of this Section 6.3 as may be required by rules and regulations prescribed from
time to time by the Commission.

         Section 6.4. Reports by the Trustee.

         (a)      On or before October 15 in each year in which any of the
Debentures are Outstanding, the Trustee shall transmit by mail, first class
postage prepaid, to the Debentureholders, as their names and addresses appear
upon the Debenture Register, a brief report dated as of the preceding September
30, if and to the extent required under Section 313(a) of the Trust Indenture
Act.

         (b)      The Trustee shall comply with Section 313(b) and 313(c) of the
Trust Indenture Act.

         (c)      A copy of each such report shall, at the time of such
transmission to Debentureholders, be filed by the Trustee with the Company, with
the automated quotation system or other self-regulatory organization in which
any Debentures are included and/or each stock exchange upon which any Debentures
are listed (if so included or listed) and also with the Commission. The Company
agrees to notify the Trustee when any Debentures become designated for inclusion
in an automated quotation system or listed on any stock exchange.

                                  ARTICLE VII.
                  REMEDIES OF THE TRUSTEE AND DEBENTUREHOLDERS
                               ON EVENT OF DEFAULT

         Section 7.1. Events of Default.

         (a)      Whenever used herein with respect to the Debentures, "Event of
Default" means any one or more of the following events that has occurred and is
continuing:

                  (i)      the Company defaults in the payment of any
         installment of interest upon any of the Debentures, as and when the
         same shall become due and payable, and

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<Page>

         continuance of such default for a period of thirty (30) days; provided,
         however, that a valid extension of an interest payment period by the
         Company in accordance with the terms of this Indenture shall not
         constitute a default in the payment of interest for this purpose;

                  (ii)     the Company defaults in the payment of the principal
         on the Debentures as and when the same shall become due and payable
         whether at maturity, upon redemption, by declaration or otherwise;

                  (iii)    the Company fails to observe or perform in any
         material respect any other of its covenants or agreements with respect
         to the Debentures for a period of ninety (90) days after the date on
         which written notice of such failure, requiring the same to be remedied
         and stating that such notice is a "Notice of Default" hereunder, shall
         have been given to the Company by the Trustee, by registered or
         certified mail, or to the Company and the Trustee by the holders of at
         least twenty-five percent (25%) in principal amount of the Debentures
         at the time Outstanding;

                  (iv)     the Company pursuant to or within the meaning of any
         Bankruptcy Law (A) commences a voluntary case; (B) consents to the
         entry of an order for relief against it in an involuntary case; (C)
         consents to the appointment of a Custodian of it or for all or
         substantially all of its property; or (D) makes a general assignment
         for the benefit of its creditors;

                  (v)      a court of competent jurisdiction enters an order
         under any Bankruptcy Law that (A) is for relief against the Company in
         an involuntary case; (B) appoints a Custodian of the Company for all or
         substantially all of its property; or (C) orders the liquidation of the
         Company, and the order or decree remains unstayed and in effect for
         ninety (90) days; or

                  (vi)     the Trust shall have voluntarily or involuntarily
         dissolved, wound-up its business or otherwise terminated its existence
         except in connection with (A) the distribution of Debentures to holders
         of Trust Securities in liquidation of their interests in the Trust; (B)
         the redemption of all of the outstanding Trust Securities of the Trust;
         or (C) certain mergers, consolidations or amalgamations, each as
         permitted by the Trust Agreement.

         (b)      In each and every such case referred to in items (i) through
(vi) of Section 7.1(a), unless the principal of all the Debentures shall have
already become due and payable, either the Trustee or the holders of not less
than twenty-five percent (25%) in aggregate principal amount of the Debentures
then Outstanding hereunder, by notice in writing to the Company (and to the
Trustee if given by such Debentureholders) may declare the principal of all the
Debentures to be due and payable immediately, and upon any such declaration the
same shall become and shall be immediately due and payable, notwithstanding
anything contained in this Indenture or in the Debentures.

         (c)      At any time after the principal of the Debentures shall have
been so declared due and payable, and before any judgment or decree for the
payment of the moneys due shall have been obtained or entered as hereinafter
provided, the holders of a majority in aggregate principal

                                       31
<Page>

amount of the Debentures then Outstanding hereunder, by written notice to the
Company and the Trustee, may rescind and annul such declaration and its
consequences if: (i) the Company has paid or deposited with the Trustee a sum
sufficient to pay all matured installments of interest upon all the Debentures
and the principal of any and all Debentures that shall have become due otherwise
than by acceleration (with interest upon such principal, and, to the extent that
such payment is enforceable under applicable law, upon overdue installments of
interest, at the rate per annum expressed in the Debentures to the date of such
payment or deposit) and the amount payable to the Trustee under Section 9.7; and
(ii) any and all Events of Default under this Indenture, other than the
nonpayment of principal on Debentures that shall not have become due by their
terms, shall have been remedied or waived as provided in Section 7.6. No such
rescission and annulment shall extend to or shall affect any subsequent default
or impair any right consequent thereon.

         (d)      In case the Trustee shall have proceeded to enforce any right
with respect to Debentures 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 and the Trustee shall be restored
respectively to their former positions and rights hereunder, and all rights,
remedies and powers of the Company and the Trustee shall continue as though no
such proceedings had been taken.

         Section 7.2. Collection of Indebtedness and Suits for Enforcement by
the Trustee.

         (a)      The Company covenants that (i) in case it shall default in the
payment of any installment of interest on any of the Debentures, and such
default shall have continued for a period of thirty (30) days (other than by
reason of a valid extension of an interest payment period by the Company in
accordance with the terms of this Indenture); or (ii) in case it shall default
in the payment of the principal of any of the Debentures when the same shall
have become due and payable, whether upon maturity of the Debentures or upon
redemption or upon declaration or otherwise, then, upon demand of the Trustee,
the Company shall pay to the Trustee, for the benefit of the holders of the
Debentures, the whole amount that then shall have been become due and payable on
all such Debentures for principal or interest, or both, as the case may be, with
interest upon the overdue principal; and (to the extent that payment of such
interest is enforceable under applicable law and, if the Debentures are held by
the Trust or a trustee of the Trust, without duplication of any other amounts
paid by the Trust or trustee in respect thereof) upon overdue installments of
interest at the rate per annum expressed in the Debentures; and, in addition
thereto, such further amount as shall be sufficient to cover the costs and
expenses of collection, and the amount payable to the Trustee under Section 9.7.

         (b)      If the Company shall fail to pay such amounts set forth in
Section 7.2(a) forthwith upon such demand, the Trustee, in its own name and as
trustee of an express trust, shall be entitled and empowered to institute any
action or proceedings at law or in equity for the collection of the sums so due
and unpaid, and may prosecute any such action or proceeding to judgment or final
decree, and may enforce any such judgment or final decree against the Company or
other obligor upon the Debentures and collect the moneys adjudged or decreed to
be payable in the manner provided by law out of the property of the Company or
other obligor upon the Debentures, wherever situated.

                                       32
<Page>

         (c)      In case of any receivership, insolvency, liquidation,
bankruptcy, reorganization, readjustment, arrangement, composition or judicial
proceedings affecting the Company, the Trust, or the creditors or property of
either, the Trustee shall have power to intervene in such proceedings and take
any action therein that may be permitted by the court and shall (except as may
be otherwise provided by law) be entitled to file such proofs of claim and other
papers and documents as may be necessary or advisable in order to have the
claims of the Trustee and of the holders of the Debentures allowed for the
entire amount due and payable by the Company under this Indenture at the date of
institution of such proceedings and for any additional amount that may become
due and payable by the Company after such date, and to collect and receive any
moneys or other property payable or deliverable on any such claim, and to
distribute the same after the deduction of the amount payable to the Trustee
under Section 9.7; and any receiver, assignee or trustee in bankruptcy or
reorganization is hereby authorized by each of the holders of the Debentures to
make such payments to the Trustee, and, in the event that the Trustee shall
consent to the making of such payments directly to such Debentureholders, to pay
to the Trustee any amount due it under Section 9.7.

         (d)      All rights of action and of asserting claims under this
Indenture, or under any of the terms established with respect to the Debentures,
may be enforced by the Trustee without the possession of any of such Debentures,
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,
after provision for payment to the Trustee of any amounts due under Section 9.7,
be for the ratable benefit of the holders of the Debentures. In case of an Event
of Default hereunder which is continuing, the Trustee may in its discretion
proceed to protect and enforce the rights vested in it by this Indenture by such
appropriate judicial proceedings as the Trustee shall deem most effectual to
protect and enforce any of such rights, either at law or in equity or in
bankruptcy or otherwise, whether for the specific enforcement of any covenant or
agreement contained in this Indenture or in aid of the exercise of any power
granted in this Indenture, or to enforce any other legal or equitable right
vested in the Trustee by this Indenture or by law. Nothing contained herein
shall be deemed to authorize the Trustee to authorize or consent to or accept or
adopt on behalf of any Debentureholder any plan of reorganization, arrangement,
adjustment or composition affecting the Debentures or the rights of any holder
thereof or to authorize the Trustee to vote in respect of the claim of any
Debentureholder in any such proceeding.

         Section 7.3. Application of Moneys Collected. Any moneys or other
assets collected by the Trustee pursuant to this Article VII with respect to the
Debentures shall be applied in the following order, at the date or dates fixed
by the Trustee and, in case of the distribution of such moneys or other assets
on account of principal or interest, upon presentation of the Debentures, and
notation thereon of the payment, if only partially paid, and upon surrender
thereof if fully paid:

                  FIRST: To the payment of costs and expenses of collection and
         of all amounts payable to the Trustee under Section 9.7;

                  SECOND: To the payment of all Senior Indebtedness if and to
         the extent required by Article XVI; and

                                       33
<Page>

                  THIRD: To the payment of the amounts then due and unpaid upon
         the Debentures for principal and interest, in respect of which or for
         the benefit of which such money has been collected, ratably, without
         preference or priority of any kind, according to the amounts due and
         payable on such Debentures for principal and interest, respectively.

         Section 7.4. Limitation on Suits.

         (a)      Except as set forth in this Indenture, no holder of any
Debenture shall have any right by virtue or by availing of any provision of this
Indenture to institute any suit, action or proceeding in equity or at law upon
or under or with respect to this Indenture or for the appointment of a receiver
or trustee, or for any other remedy hereunder, unless (i) such holder previously
shall have given to the Trustee written notice of an Event of Default and of the
continuance thereof with respect to the Debentures specifying such Event of
Default, as hereinbefore provided; (ii) the holders of not less than twenty-five
(25%) in aggregate principal amount of the Debentures then Outstanding shall
have made written request upon the Trustee to institute such action, suit or
proceeding in its own name as trustee hereunder; (iii) such holder or holders
shall have offered to the Trustee such reasonable indemnity as it may require
against the costs, expenses and liabilities to be incurred therein or thereby;
and (iv) the Trustee for sixty (60) days after its receipt of such notice,
request and offer of indemnity shall have failed to institute any such action,
suit or proceeding and during such sixty (60) day period, the holders of a
majority in principal amount of the Debentures do not give the Trustee a
direction inconsistent with the request.

         (b)      Notwithstanding anything contained herein to the contrary or
any other provisions of this Indenture, the right of any holder of the
Debentures to receive payment of the principal of and interest on the
Debentures, as therein provided, on or after the respective due dates expressed
in such Debenture (or in the case of redemption, on the redemption date), or to
institute suit for the enforcement of any such payment on or after such
respective dates or redemption date, shall not be impaired or affected without
the consent of such holder and by accepting a Debenture hereunder it is
expressly understood, intended and covenanted by the taker and holder of every
Debenture with every other such taker and holder and the Trustee that no one or
more holders of the Debentures shall have any right in any manner whatsoever by
virtue or by availing of any provision of this Indenture to affect, disturb or
prejudice the rights of the holders of any other of such Debentures, or to
obtain or seek to obtain priority over or preference to any other such holder,
or to enforce any right under this Indenture, except in the manner herein
provided and for the equal, ratable and common benefit of all holders of the
Debentures. For the protection and enforcement of the provisions of this Section
7.4, each and every Debentureholder and the Trustee shall be entitled to such
relief as can be given either at law or in equity.

         Section 7.5. Rights and Remedies Cumulative; Delay or Omission not
Waiver.

         (a)      Except as otherwise provided in Section 2.8(b), all powers and
remedies given by this Article VII to the Trustee or to the Debentureholders
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
Debentures, 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 such Debentures.

                                       34
<Page>

         (b)      No delay or omission of the Trustee or of any holder of any of
the Debentures 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 7.4, every power and remedy
given by this Article VII or by law to the Trustee or the Debentureholders may
be exercised from time to time, and as often as shall be deemed expedient, by
the Trustee or by the Debentureholders.

         Section 7.6. Control by the Debentureholders. The holders of a majority
in aggregate principal amount of the Debentures at the time Outstanding,
determined in accordance with Section 10.4, 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;
provided, however, that such direction shall not be in conflict with any rule of
law or with this Indenture. Subject to the provisions of Section 9.1, the
Trustee shall have the right to decline to follow any such direction if the
Trustee in good faith shall, by a Responsible Officer or Officers of the
Trustee, determine that the proceeding so directed would involve the Trustee in
personal liability. The holders of a majority in aggregate principal amount of
the Debentures at the time Outstanding affected thereby, determined in
accordance with Section 10.4, may on behalf of the holders of all of the
Debentures waive any past default in the performance of any of the covenants
contained herein and its consequences, except (i) a default in the payment of
the principal of or interest on any of the Debentures as and when the same shall
become due by the terms of such Debentures otherwise than by acceleration
(unless such default has been cured and a sum sufficient to pay all matured
installments of principal and interest has been deposited with the Trustee (in
accordance with Section 7.1(c)); (ii) a default in the covenants contained in
Section 5.7; or (iii) in respect of a covenant or provision hereof which cannot
be modified or amended without the consent of the holder of each Outstanding
Debenture affected; provided, however, that if the Debentures 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 preference
of Trust Securities of the Trust shall have consented to such waiver or
modification to such waiver; provided further, that if the Debentures are held
by the Trust or a trustee of the Trust, and if the consent of the holder of each
Outstanding Debenture is required, such waiver shall not be effective until each
holder of the Trust Securities of the Trust shall have consented to such waiver.
Upon any such waiver, the 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 Debentures shall be restored to their former positions and rights
hereunder, respectively; but no such waiver shall extend to any subsequent or
other default or impair any right consequent thereon.

         Section 7.7. Undertaking to Pay Costs. All parties to this Indenture
agree, and each holder of any Debentures 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 against the Trustee for any action taken or omitted by it as
the Trustee, the filing by any party litigant in such suit of an undertaking
to pay the costs of such suit, and that such court may in its discretion
assess reasonable costs, including reasonable attorneys' fees, against any
party litigant in such suit, having due regard to the merits and good faith
of the claims or defenses made by such party litigant; but the provisions of
this Section 7.7 shall not apply to any suit instituted by the Trustee, to
any suit instituted by any Debentureholder, or group of the Debentureholders
holding more than ten percent (10%) in aggregate principal amount of the
Outstanding Debentures, or to any suit instituted by any

                                       35
<Page>

Debentureholder for the enforcement of the payment of the principal of or
interest on the Debentures, on or after the respective due dates expressed in
such Debenture or established pursuant to this Indenture.

         Section 7.8. Direct Action; Right of Set-Off. In the event that an
Event of Default has occurred and is continuing and such event is attributable
to the failure of the Company to pay interest on or principal of the Debentures
on an Interest Payment Date or Maturity Date, as applicable, then a holder of
Preferred Securities may institute a legal proceeding directly against the
Company for enforcement of payment to such holder of the principal of or
interest on such Debentures having a principal amount equal to the aggregate
Liquidation Amount of the Preferred Securities of such holders (a "Direct
Action"). In connection with such Direct Action, the Company will have a right
of set-off under this Indenture to the extent of any payment actually made by
the Company to such holder of the Preferred Securities with respect to such
Direct Action.

                                  ARTICLE VIII.
                    FORM OF THE DEBENTURE AND ORIGINAL ISSUE

         Section 8.1. Form of Debenture. The Debenture and the Trustee's
Certificate of Authentication to be endorsed thereon are to be substantially in
the forms contained as Exhibit A to this Indenture, attached hereto and
incorporated herein by reference.

         Section 8.2. Original Issue of the Debentures. Debentures in the
aggregate principal amount of $53,625,000 may, upon execution of this Indenture,
be executed by the Company and delivered to the Trustee for authentication. If
the Underwriters exercise their Option and there is an Option Closing Date (as
such terms are defined in the Underwriting Agreement, dated August 13,
2002, by and among the Company, the Trust, Stifel, Nicolaus & Company,
Incorporated, Legg Mason Wood Walker Incorporated, Howe Barnes Investments, Inc.
and Sandler O'Neill & Partners, L.P., as Representatives of the several
Underwriters named therein, then, on such Option Closing Date, Debentures in the
additional aggregate amount of up to $8,043,750 may be executed by the Company
and delivered to the Trustee for authentication. The Trustee shall thereupon
authenticate and deliver said Debentures to or upon the written order of the
Company, signed by its Chief Executive Officer, its President, or any Senior or
Executive Vice President and its Treasurer or an Assistant Treasurer, without
any further action by the Company.

                                   ARTICLE IX.
                             CONCERNING THE TRUSTEE

         Section 9.1. Certain Duties and Responsibilities of the Trustee.

         (a)      The Trustee, prior to the occurrence of an Event of Default
and after the curing of all Events of Default that may have occurred, shall
undertake to perform with respect to the Debentures such duties and only such
duties as are specifically set forth in this Indenture, and no implied covenants
shall be read into this Indenture against the Trustee. In case an Event of
Default has occurred that 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 its

                                       36
<Page>

exercise, as a prudent man would exercise or use under the circumstances in the
conduct of his own affairs.

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

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

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

                           (B)      in the absence of bad faith on the part of
                  the Trustee, the Trustee may with respect to the Debentures
                  conclusively rely, as to the truth of the statements and the
                  correctness of the opinions expressed therein, upon any
                  certificates or opinions furnished to the Trustee and
                  conforming to the requirements of this Indenture; but in the
                  case of any such certificates or opinions that by any
                  provision hereof are specifically required to be furnished to
                  the Trustee, the Trustee shall be under a duty to examine the
                  same to determine whether or not they conform to the
                  requirements of this Indenture;

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

                  (iii)    the Trustee shall not be liable with respect to any
         action taken or omitted to be taken by it in good faith in accordance
         with the direction of the holders of not less than a majority in
         principal amount of the Debentures at the time Outstanding 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 with respect to the Debentures;
         and

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

         Section 9.2. Notice of Defaults. Within ninety (90) days after actual
knowledge by a Responsible Officer of the Trustee of the occurrence of any
Default hereunder with respect to the Debentures, the Trustee shall transmit by
mail to all holders of the Debentures, as their names and addresses appear in
the Debenture Register, notice of such Default, unless such default shall

                                       37
<Page>

have been cured or waived; provided, however, that, except in the case of a
default in the payment of the principal or interest (including any Additional
Payments) on any Debenture, the Trustee shall be protected in withholding such
notice if and so long as the board of directors, the executive committee or a
trust committee of the directors and/or Responsible Officers of the Trustee
determines in good faith that the withholding of such notice is in the interests
of the holders of such Debentures; and provided, further, that in the case of
any Default of the character specified in section 7.1(a)(iii), no such notice to
holders of Debentures need be sent until at least thirty (30) days after the
occurrence thereof.

         Section 9.3. Certain Rights of the Trustee. Except as otherwise
provided in Section 9.1:

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

         (b)      Any request, direction, order or demand of the Company
mentioned herein shall be sufficiently evidenced by a Board Resolution or an
instrument signed in the name of the Company by its President or any Senior or
Executive Vice President and by the Secretary or an Assistant Secretary or the
Treasurer or an Assistant Treasurer thereof (unless other evidence in respect
thereof is specifically prescribed herein);

         (c)      The Trustee shall not be deemed to have knowledge of a Default
or an Event of Default, other than an Event of Default specified in Section
7.1(a)(i) or (ii), unless and until it receives written notification of such
Event of Default from the Company or by holders of at least twenty-five percent
(25%) of the aggregate principal amount of the Debentures at the time
Outstanding;

         (d)      The Trustee may consult with counsel and the written advice of
such counsel or any Opinion of Counsel shall be full and complete authorization
and protection in respect of any action taken or suffered or omitted hereunder
in good faith and in reliance thereon;

         (e)      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 Debentureholders, pursuant to the provisions of this
Indenture, unless such Debentureholders shall have offered to the Trustee
reasonable security or indemnity against the costs, expenses and liabilities
that may be incurred therein or thereby; nothing contained herein shall,
however, relieve the Trustee of the obligation, upon the occurrence of an Event
of Default (that is continuing and has not been cured or waived) to exercise
with respect to the Debentures such of the rights and powers vested in it by
this Indenture, and to use the same degree of care and skill in its exercise, as
a prudent man would exercise or use under the circumstances in the conduct of
his own affairs;

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

         (g)      The Trustee shall not be bound to make any investigation into
the facts or matters stated in any resolution, certificate, statement,
instrument, opinion, report, notice, request,

                                       38
<Page>

consent, order, approval, bond, security, or other papers or documents, unless
requested in writing so to do by the holders of not less than a majority in
principal amount of the Outstanding Debentures (determined as provided in
Section 10.4); 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 costs,
expenses or liabilities as a condition to so proceeding, and the reasonable
expense of every such examination shall be paid by the Company or, if paid by
the Trustee, shall be repaid by the Company upon demand; and

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

         Section 9.4. The Trustee not Responsible for Recitals, Etc.

         (a)      The Recitals contained herein and in the Debentures shall be
taken as the statements of the Company, and the Trustee assumes no
responsibility for the correctness of the same.

         (b)      The Trustee makes no representations as to the validity or
sufficiency of this Indenture or of the Debentures.

         (c)      The Trustee shall not be accountable for the use or
application by the Company of any of the Debentures or of the proceeds of such
Debentures, or for the use or application of any moneys paid over by the Trustee
in accordance with any provision of this Indenture, or for the use or
application of any moneys received by any Paying Agent other than the Trustee.

         Section 9.5. May Hold the Debentures. The Trustee or any Paying Agent
or Debenture Registrar for the Debentures, in its individual or any other
capacity, may become the owner or pledgee of the Debentures with the same rights
it would have if it were not Trustee, Paying Agent or Debenture Registrar.

         Section 9.6. Moneys Held in Trust. Subject to the provisions of Section
13.5, all moneys received by the Trustee shall, until used or applied as herein
provided, be held in trust for the purposes for which they were received, but
need not be segregated from other funds except to the extent required by law.
The Trustee shall be under no liability for interest on any moneys received by
it hereunder except such as it may agree with the Company to pay thereon.

         Section 9.7. Compensation and Reimbursement.

         (a)      The Company covenants and agrees to pay to the Trustee, and
the Trustee shall be entitled to, such reasonable compensation (which shall not
be limited by any provision of law in regard to the compensation of a trustee of
an express trust), as the Company and the Trustee may from time to time agree in
writing, for all services rendered by it in the execution of the trusts hereby
created and in the exercise and performance of any of the powers and duties
hereunder of the Trustee, and, except as otherwise expressly provided herein,
the Company shall pay or

                                       39
<Page>

reimburse the Trustee upon its request for all 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 expenses and disbursements of its counsel and of all persons not
regularly in its employ) except any such expense, disbursement or advance as may
arise from its negligence or bad faith. The Company also covenants to indemnify
the Trustee (and its officers, agents, directors and employees) for, and to hold
it harmless against, any loss, liability or expense incurred without negligence
or bad faith on the part of the Trustee and arising out of or in connection with
the acceptance or administration of this Indenture, including the costs and
expenses of defending itself against any claim of liability in the premises.

         (b)      The obligations of the Company under this Section 9.7 to
compensate and indemnify the Trustee and to pay or reimburse the Trustee for
expenses, disbursements and advances shall constitute additional indebtedness
hereunder. Such additional indebtedness shall be secured by a lien prior to that
of the Debentures 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
Debentures.

         Section 9.8. Reliance on Officers' Certificate. Except as otherwise
provided in Section 9.1, 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 suffering or omitting to take any
action hereunder, such matter (unless other evidence in respect thereof is
herein specifically prescribed) may, in the absence of negligence or bad faith
on the part of the Trustee, be deemed to be conclusively proved and established
by an Officers' Certificate delivered to the Trustee and such certificate, in
the absence of negligence or bad faith on the part of the Trustee, shall be full
warrant to the Trustee for any action taken, suffered or omitted to be taken by
it under the provisions of this Indenture upon the faith thereof.

         Section 9.9. Disqualification; Conflicting Interests. If the Trustee
has or shall acquire any "conflicting interest" within the meaning of Section
310(b) of the Trust Indenture Act, the Trustee and the Company shall in all
respects comply with the provisions of Section 310(b) of the Trust Indenture
Act.

         Section 9.10. Corporate Trustee Required; Eligibility. There shall at
all times be a Trustee with respect to the Debentures issued hereunder which
shall at all times be a corporation organized and doing business under the laws
of the United States or any state or territory thereof or of the District of
Columbia, or a corporation or other Person permitted to act as trustee by the
Commission, authorized under such laws to exercise corporate trust powers,
having a combined capital and surplus of at least $50,000,000, and 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 to the requirements of the aforesaid supervising or
examining authority, then for the purposes of this Section 9.10, 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.
The Company may not, nor may any Person directly or indirectly controlling,
controlled by, or under common control with the Company, serve as Trustee. In
case at any time the Trustee shall cease to be eligible in accordance with the
provisions of this Section 9.10, the Trustee shall resign immediately in the
manner and with the effect specified in Section 9.11.

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         Section 9.11. Resignation and Removal; Appointment of Successor.

         (a)      The Trustee or any successor hereafter appointed, may at any
time resign by giving written notice thereof to the Company and by transmitting
notice of resignation by mail, first class postage prepaid, to the
Debentureholders, as their names and addresses appear upon the Debenture
Register. Upon receiving such notice of resignation, the Company shall promptly
appoint a successor trustee with respect to Debentures by written instrument, in
duplicate, executed by order of the Board of Directors, one copy of which
instrument shall be delivered to the resigning Trustee and one copy to the
successor trustee. If no successor trustee shall have been so appointed and have
accepted appointment within thirty (30) days after the mailing of such notice of
resignation, the resigning Trustee may petition any court of competent
jurisdiction for the appointment of a successor trustee with respect to
Debentures, or any Debentureholder who has been a bona fide holder of a
Debenture or Debentures for at least six months may, subject to the provisions
of Sections 9.9 and 9.10, on behalf of himself or herself and all others
similarly situated, petition any such court for the appointment of a successor
trustee. Such court may thereupon after such notice, if any, as it may deem
proper and prescribe, appoint a successor trustee.

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

                  (i)      the Trustee shall fail to comply with the provisions
         of Section 9.9 after written request therefor by the Company or by any
         Debentureholder who has been a bona fide holder of a Debenture or
         Debentures for at least six months; or

                  (ii)     the Trustee shall cease to be eligible in accordance
         with the provisions of Section 9.10 and shall fail to resign after
         written request therefor by the Company or by any such Debentureholder;
         or

                  (iii)    the Trustee shall become incapable of acting, or
         shall be adjudged a bankrupt or insolvent, or commence a voluntary
         bankruptcy proceeding, or a receiver of the Trustee or of its property
         shall be appointed or consented to, 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 with respect to all
Debentures 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 9.10, unless the Trustee's duty to
resign is stayed as provided herein, any Debentureholder who has been a bona
fide holder of a Debenture or Debentures for at least six months may, on behalf
of that holder 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.

         (c)      The holders of a majority in aggregate principal amount of the
Debentures at the time Outstanding may at any time remove the Trustee by so
notifying the Trustee and the Company and may appoint a successor Trustee with
the consent of the Company.

                                       41
<Page>

         (d)      Any resignation or removal of the Trustee and appointment of a
successor trustee with respect to the Debentures pursuant to any of the
provisions of this Section 9.11 shall become effective upon acceptance of
appointment by the successor trustee as provided in Section 9.12.

         (e)      Any successor trustee appointed pursuant to this Section 9.11
may be appointed with respect to the Debentures, and at any time there shall be
only one Trustee with respect to the Debentures.

         Section 9.12.     Acceptance of Appointment by Successor.

         (a)      In case of the appointment hereunder of a successor trustee
with respect to the Debentures, every successor trustee so appointed shall
execute, acknowledge and deliver to the Company and to the retiring Trustee an
instrument accepting such appointment, and thereupon the resignation or removal
of the retiring Trustee shall become effective and such successor trustee,
without any further act, deed or conveyance, shall become vested with all the
rights, powers, trusts and duties of the retiring Trustee; but, on the request
of the Company or the successor trustee, such retiring Trustee shall, upon
payment of its charges, execute and deliver an instrument transferring to such
successor trustee all the rights, powers, and trusts of the retiring Trustee and
shall duly assign, transfer and deliver to such successor trustee all property
and money held by suh retiring Trustee hereunder.

         (b)      Upon request of any successor trustee, the Company shall
execute any and all instruments for more fully and certainly vesting in and
confirming to such successor trustee all such rights, powers and trusts referred
to in paragraph (a) of this Section 9.12.

         (c)      No successor trustee shall accept its appointment unless at
the time of such acceptance such successor trustee shall be qualified and
eligible under this Article IX.

         (d)      Upon acceptance of appointment by a successor trustee as
provided in this Section 9.12, the Company shall transmit notice of the
succession of such trustee hereunder by mail, first class postage prepaid, to
the Debentureholders, as their names and addresses appear upon the Debenture
Register. If the Company fails to transmit such notice within ten days after
acceptance of appointment by the successor trustee, the successor trustee shall
cause such notice to be transmitted at the expense of the Company.

         Section 9.13. Merger, Conversion, Consolidation or Succession to
Business. 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 the corporate trust business of the Trustee, shall be the
successor of the Trustee hereunder, provided that such Person shall be qualified
under the provisions of Section 9.9 and eligible under the provisions of Section
9.10, without the execution or filing of any paper or any further act on the
part of any of the parties hereto, anything herein to the contrary
notwithstanding. In case any Debentures shall have been authenticated, but not
delivered, by the Trustee then in office, any successor by merger, conversion or
consolidation to such authenticating Trustee may adopt such authentication and
deliver the Debentures so authenticated with the same effect as if such
successor Trustee had itself authenticated such Debentures.

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<Page>

         Section 9.14. Preferential Collection of Claims against the Company.
The Trustee shall comply with Section 311(a) of the Trust Indenture Act,
excluding any creditor relationship described in Section 311(b) of the Trust
Indenture Act. A Trustee who has resigned or been removed shall be subject to
Section 311(a) of the Trust Indenture Act to the extent included therein.

                                   ARTICLE X.
                         CONCERNING THE DEBENTUREHOLDERS

         Section 10.1. Evidence of Action by the Holders.

         (a)      Whenever in this Indenture it is provided that the holders of
a majority or specified percentage in aggregate principal amount of the
Debentures 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 that at the time of taking any such action the holders of such majority
or specified percentage have joined therein may be evidenced by any instrument
or any number of instruments of similar tenor executed by such holders of
Debentures in person or by agent or proxy appointed in writing.

         (b)      If the Company shall solicit from the Debentureholders any
request, demand, authorization, direction, notice, consent, waiver or other
action, the Company may, at its option, as evidenced by an Officers'
Certificate, fix in advance a record date for the determination of
Debentureholders entitled to give such request, demand, authorization,
direction, notice, consent, waiver or other action, 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 may be given
before or after the record date, but only the Debentureholders of record at the
close of business on the record date shall be deemed to be Debentureholders for
the purposes of determining whether Debentureholders of the requisite proportion
of Outstanding Debentures have authorized or agreed or consented to such
request, demand, authorization, direction, notice, consent, waiver or other
action, and for that purpose the Outstanding Debentures shall be computed as of
the record date; provided, however, that no such authorization, agreement or
consent by such Debentureholders on the record date shall be deemed effective
unless it shall become effective pursuant to the provisions of this Indenture
not later than six (6) months after the record date.

         Section 10.2. Proof of Execution by the Debentureholders. Subject to
the provisions of Section 9.1, proof of the execution of any instrument by a
Debentureholder (such proof shall not require notarization) or such
Debentureholder's agent or proxy and proof of the holding by any Person of any
of the Debentures shall be sufficient if made in the following manner:

         (a)      The fact and date of the execution by any such Person of any
instrument may be proved in any reasonable manner acceptable to the Trustee.

         (b)      The ownership of Debentures shall be proved by the Debenture
Register of such Debentures or by a certificate of the Debenture Registrar
thereof.

         (c)      The Trustee may require such additional proof of any matter
referred to in this Section 10.2 as it shall deem necessary.

                                       43
<Page>

         Section 10.3. Who May be Deemed Owners. Prior to the due presentment
for registration of transfer of any Debenture, the Company, the Trustee, any
Paying Agent, any Authenticating Agent and any Debenture Registrar may deem and
treat the Person in whose name such Debenture shall be registered upon the books
of the Company as the absolute owner of such Debenture (whether or not such
Debenture shall be overdue and notwithstanding any notice of ownership or
writing thereon made by anyone other than the Debenture Registrar) for the
purpose of receiving payment of or on account of the principal of and interest
on such Debenture (subject to Section 2.3) and for all other purposes; and
neither the Company nor the Trustee nor any Paying Agent nor any Authenticating
Agent nor any Debenture Registrar shall be affected by any notice to the
contrary.

         Section 10.4. Certain Debentures Owned by Company Disregarded. In
determining whether the holders of the requisite aggregate principal amount of
the Debentures have concurred in any direction, consent or waiver under this
Indenture, the Debentures that are owned by the Company or any other obligor on
the Debentures or by any Person directly or indirectly controlling or controlled
by or under common control with the Company or any other obligor on the
Debentures shall be disregarded and deemed not to be Outstanding for the purpose
of any such determination, except that (a) for the purpose of determining
whether the Trustee shall be protected in relying on any such direction, consent
or waiver, only Debentures that the Trustee actually knows are so owned shall be
so disregarded; and (b) for purposes of this Section 10.4, the Trust shall be
deemed not to be controlled by the Company. The Debentures so owned that have
been pledged in good faith may be regarded as Outstanding for the purposes of
this Section 10.4, if the pledgee shall establish to the satisfaction of the
Trustee the pledgee's right so to act with respect to such Debentures and that
the pledgee is not a Person directly or indirectly controlling or controlled by
or under direct or indirect common control with the Company or any such other
obligor. In 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 10.5. Actions Binding on the Future Debentureholders. At any
time prior to (but not after) the evidencing to the Trustee, as provided in
Section 10.1, of the taking of any action by the holders of the majority or
percentage in aggregate principal amount of the Debentures specified in this
Indenture in connection with such action, any holder of a Debenture that is
shown by the evidence to be included in the Debentures the holders of which have
consented to such action may, by filing written notice with the Trustee, and
upon proof of holding as provided in Section 10.2, revoke such action so far as
concerns such Debenture. Except as aforesaid, any such action taken by the
holder of any Debenture shall be conclusive and binding upon such holder and
upon all future holders and owners of such Debenture, and of any Debenture
issued in exchange therefor, on registration of transfer thereof or in place
thereof, irrespective of whether or not any notation in regard thereto is made
upon such Debenture. Any action taken by the holders of the majority or
percentage in aggregate principal amount of the Debentures specified in this
Indenture in connection with such action shall be conclusively binding upon the
Company, the Trustee and the holders of all the Debentures.

                                   ARTICLE XI.
                             SUPPLEMENTAL INDENTURES

         Section 11.1. Supplemental Indentures without the Consent of the
Debentureholders. In addition to any supplemental indenture otherwise authorized
by this Indenture, the Company and

                                       44
<Page>

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 as then in effect), without the consent of the
Debentureholders, for one or more of the following purposes:

         (a)      to cure any ambiguity, defect, or inconsistency herein, or in
the Debentures;

         (b)      to comply with Article X;

         (c)      to provide for uncertificated Debentures in addition to or in
place of certificated Debentures;

         (d)      to add to the covenants of the Company for the benefit of the
holders of all or any of the Debentures or to surrender any right or power
herein conferred upon the Company;

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

         (f)      to make any change that does not adversely affect the rights
of any Debentureholder in any material respect;

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

         (h)      to qualify or maintain the qualification of this Indenture
under the Trust Indenture Act; or

         (i)      to evidence a consolidation or merger involving the Company as
permitted under Section 12.1.

         The Trustee is hereby authorized to join with the Company in the
execution of any such supplemental indenture, and to make any further
appropriate agreements and stipulations that may be therein contained, but the
Trustee shall not be obligated to enter into any such supplemental indenture
that affects the Trustee's own rights, duties or immunities under this Indenture
or otherwise. Any supplemental indenture authorized by the provisions of this
Section 11.1 may be executed by the Company and the Trustee without the consent
of the holders of any of the Debentures at the time Outstanding, notwithstanding
any of the provisions of Section 11.2.

         Section 11.2. Supplemental Indentures with Consent of the
Debentureholders. With the consent (evidenced as provided in Section 10.1) of
the holders of not less than a majority in aggregate principal amount of the
Debentures at the time Outstanding, the Company, when authorized by Board
Resolutions, 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 as then in effect) 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

                                       45
<Page>

indenture or of modifying in any manner not covered by Section 11.1 the rights
of the holders of the Debentures under this Indenture; provided, however, that
no such supplemental indenture shall without the consent of the holders of each
Debenture then Outstanding and affected thereby, (a) extend the fixed maturity
of any Debentures, reduce the principal amount thereof, or reduce the rate or
extend the time of payment of interest thereon; or (b) reduce the aforesaid
percentage of Debentures, the holders of which are required to consent to any
such supplemental indenture; provided further, that if the Debentures are held
by the Trust or a trustee of the Trust, such supplemental indenture shall not be
effective until the holders of a majority in liquidation preference of Trust
Securities of the Trust shall have consented to such supplemental indenture;
provided further, that if the Debentures are held by the Trust or a trustee of
the Trust and if the consent of the holder of each Outstanding Debenture is
required, such supplemental indenture shall not be effective until each holder
of the Trust Securities of the Trust shall have consented to such supplemental
indenture. It shall not be necessary for the consent of the Debentureholders
affected thereby under this Section 11.2 to approve the particular form of any
proposed supplemental indenture, but it shall be sufficient if such consent
shall approve the substance thereof.

         Section 11.3. Effect of Supplemental Indentures. Upon the execution of
any supplemental indenture pursuant to the provisions of this Article XI, 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 Debentures shall thereafter be determined, exercised and enforced hereunder
subject in all respects to such modifications and amendments, and all the terms
and conditions of any such supplemental indenture shall be and be deemed to be
part of the terms and conditions of this Indenture for any and all purposes.

         Section 11.4. The Debentures Affected by Supplemental Indentures. The
Debentures affected by a supplemental indenture, authenticated and delivered
after the execution of such supplemental indenture pursuant to the provisions of
this Article XI, may bear a notation in form approved by the Company, provided
such form meets the requirements of any exchange upon which the Debentures may
be listed, as to any matter provided for in such supplemental indenture. If the
Company shall so determine, new Debentures 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 by the
Company, authenticated by the Trustee and delivered in exchange for the
Debentures then Outstanding.

         Section 11.5. Execution of Supplemental Indentures.

         (a)      Upon the request of the Company, accompanied by its Board
Resolutions authorizing the execution of any such supplemental indenture, and
upon the filing with the Trustee of evidence of the consent of the
Debentureholders required to consent thereto 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. The Trustee, subject to the provisions of Sections 9.1, may receive
an Opinion of Counsel as conclusive evidence that any supplemental indenture
executed pursuant to this Article XI is authorized or permitted by, and

                                       46
<Page>

conforms to, the terms of this Article XI and that it is proper for the Trustee
under the provisions of this Article XI to join in the execution thereof.

         (b)      Promptly after the execution by the Company and the Trustee
of any supplemental indenture pursuant to the provisions of this Section 11.5,
the Trustee shall transmit by mail, first class postage prepaid, a notice,
setting forth in general terms the substance of such supplemental indenture, to
the Debentureholders as their names and addresses appear upon the Debenture
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.

                                       47
<Page>

                                  ARTICLE XII.
                              SUCCESSOR CORPORATION

         Section 12.1. The Company may Consolidate, Etc. Nothing contained in
this Indenture or in any of the Debentures shall prevent any consolidation or
merger of the Company with or into any other corporation or corporations
(whether or not affiliated with the Company, as the case may be), or successive
consolidations or mergers in which the Company, as the case may be, or its
successor or successors shall be a party or parties, or shall prevent any sale,
conveyance, transfer or other disposition of the property of the Company, as the
case may be, or its successor or successors as an entirety, or substantially as
an entirety, to any other corporation (whether or not affiliated with the
Company, as the case may be, or its successor or successors) authorized to
acquire and operate the same; provided, however, that the Company hereby
covenants and agrees that (a) upon any such consolidation, merger, sale,
conveyance, transfer or other disposition, the due and punctual payment, in the
case of the Company, of the principal of and interest on all of the Debentures,
according to their tenor and the due and punctual performance and observance of
all the covenants and conditions of this Indenture to be kept or performed by
the Company, as the case may be, shall be expressly assumed, by supplemental
indenture (which shall conform to the provisions of the Trust Indenture Act, as
then in effect) satisfactory in form to the Trustee executed and delivered to
the Trustee by the entity formed by such consolidation, or into which the
Company, as the case may be, shall have been merged, or by the entity which
shall have acquired such property; (b) in case the Company consolidates with or
merges into another Person or conveys or transfers its properties and assets
substantially as an entirety to any Person, the successor Person is organized
under the laws of the United States or any state or the District of Columbia;
and (c) immediately after giving effect thereto, an Event of Default, and no
event which, after notice or lapse of time or both, would become an Event of
Default, shall have occurred and be continuing.

         Section 12.2. Successor Corporation Substituted.

         (a)      In case of any such consolidation, merger, sale, conveyance,
transfer or other disposition and upon the assumption by the successor
corporation, by supplemental indenture, executed and delivered to the Trustee
and satisfactory in form to the Trustee, of, in the case of the Company, the due
and punctual payment of the principal of and interest on all of the Debentures
Outstanding and the due and punctual performance of all of the covenants and
conditions of this Indenture to be performed by the Company, as the case may be,
such successor corporation shall succeed to and be substituted for the Company,
with the same effect as if it had been named as the Company herein, and
thereupon the predecessor corporation shall be relieved of all obligations and
covenants under this Indenture and the Debentures.

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

         (c)      Nothing contained in this Indenture or in any of the
Debentures shall prevent the Company from merging into itself or acquiring by
purchase or otherwise, all or any part of, the property of any other Person
(whether or not affiliated with the Company).

                                       48
<Page>

         Section 12.3. Evidence of Consolidation, Etc. to Trustee. The Trustee,
subject to the provisions of Section 9.1, may receive an Opinion of Counsel as
conclusive evidence that any such consolidation, merger, sale, conveyance,
transfer or other disposition, and any such assumption, comply with the
provisions of this Article XII.

                                  ARTICLE XIII.
                           SATISFACTION AND DISCHARGE

         Section 13.1. Satisfaction and Discharge of Indenture. If at any time:
(a) the Company shall have delivered to the Trustee for cancellation all
Debentures theretofore authenticated (other than any Debentures that shall have
been destroyed, lost or stolen and that shall have been replaced or paid as
provided in Section 2.8) and all Debentures for whose payment money or
Governmental Obligations have theretofore been deposited in trust or segregated
and held in trust by the Company (and thereupon repaid to the Company or
discharged from such trust, as provided in Section 13.5); or (b) all such
Debentures not theretofore delivered to the Trustee for cancellation shall have
become due and payable, or are by their terms to become due and payable within
one year or are to be called for redemption within one year under arrangements
satisfactory to the Trustee for the giving of notice of redemption, and the
Company shall deposit or cause to be deposited with the Trustee as trust funds
the entire amount in moneys or Governmental Obligations sufficient, or a
combination thereof sufficient, in the opinion of a nationally recognized firm
of independent public accountants expressed in a written certification thereof
delivered to the Trustee, to pay at maturity or upon redemption all Debentures
not theretofore delivered to the Trustee for cancellation, including principal
and interest due or to become due to such date of maturity or date fixed for
redemption, as the case may be, and if the Company shall also pay or cause to be
paid all other sums payable hereunder by the Company; then this Indenture shall
thereupon cease to be of further effect except for the provisions of Sections
2.3, 2.6, 2.8, 5.1, 5.2, 5.3, 9.7 and 9.10, that shall survive until the date of
maturity or redemption date, as the case may be, and Sections 9.7 and 13.5, that
shall survive to such date and thereafter, and the Trustee, on demand of the
Company and at the cost and expense of the Company, shall execute proper
instruments acknowledging satisfaction of and discharging this Indenture.

         Section 13.2. Discharge of Obligations. If at any time all Debentures
not heretofore delivered to the Trustee for cancellation or that have not become
due and payable as described in Section 13.1 shall have been paid by the Company
by depositing irrevocably with the Trustee as trust funds moneys or an amount of
Governmental Obligations sufficient in the opinion of a nationally recognized
certified public accounting firm to pay at maturity or upon redemption all
Debentures not theretofore delivered to the Trustee for cancellation, including
principal and interest due or to become due to such date of maturity or date
fixed for redemption, as the case may be, and if the Company shall also pay or
cause to be paid all other sums payable hereunder by the Company, then after the
date such moneys or Governmental Obligations, as the case may be, are deposited
with the Trustee, the obligations of the Company under this Indenture shall
cease to be of further effect except for the provisions of Sections 2.3, 2.6,
2.8, 5.1, 5.2, 5.3, 9.6 and 13.5, that shall survive until such Debentures shall
mature and be paid. Thereafter, Sections 9.7 and 13.5 shall survive.

         Section 13.3. Deposited Moneys to be Held in Trust. All monies or
Governmental Obligations deposited with the Trustee pursuant to Sections 13.1 or
13.2 shall be held in trust and

                                       49
<Page>

shall be available for payment as due, either directly or through any Paying
Agent (including the Company acting as its own Paying Agent), to the holders of
the Debentures for the payment or redemption of which such moneys or
Governmental Obligations have been deposited with the Trustee.

         Section 13.4. Payment Of Monies Held by Paying Agents. In connection
with the satisfaction and discharge of this Indenture, all moneys or
Governmental Obligations then held by any Paying Agent under the provisions of
this Indenture shall, upon demand of the Company, be paid to the Trustee and
thereupon such Paying Agent shall be released from all further liability with
respect to such moneys or Governmental Obligations.

         Section 13.5. Repayment to the Company. Any monies or Governmental
Obligations deposited with any Paying Agent or the Trustee, or then held by the
Company in trust, for payment of principal of or interest on the Debentures that
are not applied but remain unclaimed by the holders of such Debentures for at
least two years after the date upon which the principal of or interest on such
Debentures shall have respectively become due and payable, shall be repaid to
the Company, as the case may be, on September 30 of each year or (if then held
by the Company) shall be discharged from such trust; and thereupon the Paying
Agent and the Trustee shall be released from all further liability with respect
to such moneys or Governmental Obligations, and the holder of any of the
Debentures entitled to receive such payment shall thereafter, as an unsecured
general creditor, look only to the Company for the payment thereof.

                                  ARTICLE XIV.
                    IMMUNITY OF INCORPORATORS, STOCKHOLDERS,
                             OFFICERS AND DIRECTORS

         Section 14.1. No Recourse. No recourse under or upon any obligation,
covenant or agreement of this Indenture, or of the Debentures, or for any claim
based thereon or otherwise in respect thereof, shall be had against any
incorporator, stockholder, officer or director, past, present or future, as
such, of the Company or of any predecessor or successor corporation, either
directly or through the Company or any such predecessor or successor
corporation, whether by virtue of any constitution, statute or rule of law, or
by the enforcement of any assessment or penalty or otherwise; it being expressly
understood that this Indenture and the obligations issued hereunder are solely
corporate obligations, and that no such personal liability whatever, shall
attach to, or is or shall be incurred by, the incorporators, stockholders,
officers or directors as such, of the Company or of any predecessor or successor
corporation, or any of them, because of the creation of the indebtedness hereby
authorized, or under or by reason of the obligations, covenants or agreements
contained in this Indenture or in any of the Debentures or implied therefrom;
and that any and all such personal liability of every name and nature, either at
common law or in equity or by constitution or statute, and any and all such
rights and claims against, every such incorporator, stockholder, officer or
director as such, because of the creation of the indebtedness hereby authorized,
or under or by reason of the obligations, covenants or agreements contained in
this Indenture or in any of the Debentures or implied therefrom, are hereby
expressly waived and released as a condition of, and as a consideration for, the
execution of this Indenture and the issuance of such Debentures.

                                   ARTICLE XV.
                            MISCELLANEOUS PROVISIONS

                                       50
<Page>

         Section 15.1. Effect on Successors and Assigns. All the covenants,
stipulations, promises and agreements in this Indenture contained by or on
behalf of the Company shall bind its respective successors and assigns, whether
so expressed or not.

         Section 15.2. Actions by Successor. 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 corresponding board, committee or
officer of any corporation that shall at the time be the lawful sole successor
of the Company.

         Section 15.3. Surrender of the Company Powers. The Company by
instrument in writing executed by appropriate authority 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, as the case may be, and as to any successor corporation.

         Section 15.4. Notices. Except as otherwise expressly provided herein
any notice or demand that by any provision of this Indenture is required or
permitted to be given or served by the Trustee or by the holders of Debentures
to or on the Company may be given or served by being deposited first class
postage prepaid in a post-office letterbox addressed (until another address is
filed in writing by the Company with the Trustee), as follows: c/o MB Financial,
Inc., 801 West Madison Street, Chicago, Illinois 60607, Attention: Chief
Financial Officer. Any notice, election, request or demand by the Company or any
Debentureholder 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 Corporate
Trust Office of the Trustee.

         Section 15.5. Governing Law. This Indenture and each Debenture shall be
deemed to be a contract made under the internal laws of the State of New York
and for all purposes shall be construed in accordance with the laws of said
State.

         Section 15.6. Treatment of the Debentures as Debt. It is intended that
the Debentures shall be treated as indebtedness and not as equity for federal
income tax purposes. The provisions of this Indenture shall be interpreted to
further this intention. The Company (with respect to its separate books and
records), the Trustee and, by acceptance of a Debenture, each holder of a
Debenture, agree to treat the Debentures as indebtedness of the Company and not
as equity for all tax (including without limitation, federal income tax) and
financial accounting purposes.

         Section 15.7.  Compliance Certificates and Opinions.

         (a)      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 all
conditions precedent provided for in this Indenture relating to the proposed
action have been complied with and an Opinion of Counsel stating that in the
opinion of such counsel all such conditions precedent have been complied with,
except that in the case of any such application or demand as to which the
furnishing of such documents is

                                       51
<Page>

specifically required by any provision of this Indenture relating to such
particular application or demand, no additional certificate or opinion need be
furnished.

         (b)      Each certificate or opinion of the Company provided for in
this Indenture and delivered to the Trustee with respect to compliance with a
condition or covenant in this Indenture shall include (i) a statement that the
Person making such certificate or opinion has read such covenant or condition;
(ii) 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; (iii) a statement that, in the opinion of such
Person, he or she has made such examination or investigation as, in the opinion
of such Person, is necessary to enable him or her to express an informed opinion
as to whether or not such covenant or condition has been complied with; and (iv)
a statement as to whether or not, in the opinion of such Person, such condition
or covenant has been complied with; provided, however, that each such
certificate shall comply with the provisions of Section 314 of the Trust
Indenture Act.

         Section 15.8. Payments on Business Days.

         In any case where the date of maturity of interest or principal of any
Debenture or the date of redemption of any Debenture shall not be a Business
Day, then payment of interest or principal may (subject to Section 2.4(b)) be
made on the next succeeding Business Day with the same force and effect as if
made on the nominal date of maturity or redemption, and no interest shall accrue
for the period after such nominal date.

         Section 15.9. Conflict with Trust Indenture Act. If and to the extent
that any provision of this Indenture limits, qualifies or conflicts with the
duties imposed by Sections 310 to 317, inclusive, of the Trust Indenture Act,
such imposed duties shall control.

         Section 15.10. 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 15.11. Separability. In case any one or more of the provisions
contained in this Indenture or in the Debentures 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 the Debentures, but this Indenture and the Debentures shall be construed as
if such invalid or illegal or unenforceable provision had never been contained
herein or therein.

         Section 15.12. Assignment. The Company shall have the right at all
times to assign any of its respective rights or obligations under this Indenture
to a direct or indirect wholly owned Subsidiary of the Company, provided that,
in the event of any such assignment, the Company shall remain liable for all
such obligations. Subject to the foregoing, this Indenture is binding upon and
inures to the benefit of the parties thereto and their respective successors and
assigns. This Indenture may not otherwise be assigned by the parties thereto.

         Section 15.13. Acknowledgment of Rights; Right of Setoff.

                                       52
<Page>

         (a)      The Company acknowledges that, with respect to any Debentures
held by the Trust or a trustee of the Trust, if the Property Trustee fails to
enforce its rights under this Indenture as the holder of the Debentures held as
the assets of the Trust, any holder of Preferred Securities may institute legal
proceedings directly against the Company to enforce such Property Trustee's
rights under this Indenture without first instituting any legal proceedings
against such Property Trustee or any other person or entity. Notwithstanding the
foregoing, and notwithstanding the provisions of Section 7.4(a) hereof, if an
Event of Default has occurred and is continuing and such event is attributable
to the failure of the Company to pay principal or interest on the Debentures on
the date such principal or interest is otherwise payable (or in the case of
redemption, on the redemption date), the Company acknowledges that a holder of
Preferred Securities may directly institute a proceeding for enforcement of
payment to such holder of the principal of or interest on the Debentures having
a principal amount equal to the aggregate liquidation amount of the Preferred
Securities of such holder on or after the respective due date specified in the
Debentures.

         (b)      Notwithstanding anything to the contrary contained in this
Indenture, the Company shall have the right to setoff any payment it is
otherwise required to make hereunder in respect of any Trust Securities to the
extent that the Company has previously made, or is concurrently making, a
payment to the holder of such Trust Securities under the Preferred Securities
Guarantee or in connection with a proceeding for enforcement of payment of the
principal of or interest on the Debentures directly brought by holders of any
Trust Securities.

                                  ARTICLE XVI.
                         SUBORDINATION OF THE DEBENTURES

         Section 16.1. Agreement to Subordinate. The Company covenants and
agrees, and each holder of the Debentures issued hereunder by such holder's
acceptance thereof likewise covenants and agrees, that all the Debentures shall
be issued subject to the provisions of this Article XVI; and each holder of a
Debenture, 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 principal of and interest on all the Debentures issued hereunder 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 Debt,
Subordinated Debt and Additional Senior Obligations of the Company
(collectively, "Senior Indebtedness") to the extent provided herein, whether
outstanding at the date of this Indenture or thereafter incurred. No provision
of this Article XVI shall prevent the occurrence of any default or Event of
Default hereunder.

         Section 16.2. 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, in the event that the maturity of any Senior Indebtedness has
been accelerated because of a default or in the event any judicial proceeding
is pending with respect to any such default, then, in any such case, no
payment shall be made by the Company with respect to the principal (including
redemption payments) of or interest on the Debentures. In the event that,
notwithstanding the foregoing, any payment shall be received by the Trustee
when such payment is prohibited by the preceding sentence of this Section
16.2, such payment shall 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

                                       53
<Page>

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 the Senior Indebtedness.

         Section 16.3. Liquidation; Dissolution; Bankruptcy.

         (a)      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
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 account
of the principal or interest on the Debentures; 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 holders of the Debentures or the Trustee
would be entitled to receive from the Company, except for the provisions of this
Article XVI, 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 holders of the Debentures or by the Trustee under this
Indenture if received by them or it, directly to the holders of Senior
Indebtedness (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 holders of the Debentures or to the Trustee.

         (b)      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 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 Indebtedness, as the case may be,
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.

         (c)      For purposes of this Article XVI, 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 XVI with respect
to the Debentures to the payment of all Senior Indebtedness, as the case may

                                       54
<Page>

be, that may at the time be outstanding, provided that (i) such Senior
Indebtedness is assumed by the new corporation, if any, resulting from any such
reorganization or readjustment; and (ii) 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 of its property
as an entirety, or substantially as an entirety, to another corporation upon the
terms and conditions provided for in Article XII shall not be deemed a
dissolution, winding-up, liquidation or reorganization for the purposes of this
Section 16.3 if such other corporation shall, as a part of such consolidation,
merger, conveyance or transfer, comply with the conditions stated in Article
XII. Nothing in Section 16.2 or in this Section 16.3 shall apply to claims of,
or payments to, the Trustee under or pursuant to Section 9.7.

         Section 16.4. Subrogation.

         (a)      Subject to the payment in full of all Senior Indebtedness, the
rights of the holders of the Debentures 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, as the case may be, applicable to
such Senior Indebtedness until the principal of and interest on the Debentures
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 holders of the Debentures or the Trustee would be
entitled except for the provisions of this Article XVI, and no payment over
pursuant to the provisions of this Article XVI to or for the benefit of the
holders of such Senior Indebtedness by holders of the Debentures or the Trustee,
shall, as between the Company, its creditors (other than holders of Senior
Indebtedness of the Company), and the holders of the Debentures, be deemed to be
a payment by the Company to or on account of such Senior Indebtedness. It is
understood that the provisions of this Article XVI are and are intended solely
for the purposes of defining the relative rights of the holders of the
Debentures, on the one hand, and the holders of such Senior Indebtedness on the
other hand.

         (b)      Nothing contained in this Article XVI or elsewhere in this
Indenture or in the Debentures is intended to or shall impair, as between the
Company, its creditors (other than the holders of Senior Indebtedness), and the
holders of the Debentures, the obligation of the Company, which is absolute and
unconditional, to pay to the holders of the Debentures the principal of and
interest on the Debentures 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 Debentures and creditors of the Company, as the
case may be, other than the holders of Senior Indebtedness, as the case may be,
nor shall anything herein or therein prevent the Trustee or the holder of any
Debenture from exercising all remedies otherwise permitted by applicable law
upon default under this Indenture, subject to the rights, if any, under this
Article XVI of the holders of such Senior Indebtedness in respect of cash,
property or securities of the Company, as the case may be, received upon the
exercise of any such remedy.

         (c)      Upon any payment or distribution of assets of the Company
referred to in this Article XVI, the Trustee, subject to the provisions of
Article IX, and the holders of the Debentures 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,

                                       55
<Page>

agent or other Person making such payment or distribution, delivered to
theTrustee or to the holders of the Debentures, for the purposes of ascertaining
the Persons entitled to participate in such distribution, the holders of Senior
Indebtedness and other indebtedness of the Company, as the case may be, the
amount thereof or payable thereon, the amount or amounts paid or distributed
thereon and all other facts pertinent thereto or to this Article XVI.

         Section 16.5. The Trustee to Effectuate Subordination. Each holder of
Debentures by such holder's acceptance thereof authorizes and directs the
Trustee on such holder's behalf to take such action as may be necessary or
appropriate to effectuate the subordination provided in this Article XVI and
appoints the Trustee such holder's attorney-in-fact for any and all such
purposes.

         Section 16.6. Notice by the Company.

         (a)      The Company shall give prompt written notice to a Responsible
Officer of the Trustee of any fact known to the Company that would prohibit the
making of any payment of monies to or by the Trustee in respect of the
Debentures pursuant to the provisions of this Article XVI. Notwithstanding the
provisions of this Article XVI or any other provision of this Indenture, the
Trustee shall not be charged with knowledge of the existence of any facts that
would prohibit the making of any payment of monies to or by the Trustee in
respect of the Debentures pursuant to the provisions of this Article XVI, unless
and until a Responsible Officer 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 Section 9.1, 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 16.6 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 interest on any Debenture), 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.

         (b)      The Trustee, subject to the provisions of Section 9.1, shall
be entitled to conclusively rely on the delivery to it of a written notice by a
Person representing himself or herself to be a holder of Senior Indebtedness (or
a trustee on behalf of such holder) to establish that such notice has been given
by a holder of such Senior Indebtedness or a trustee 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 XVI, 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 XVI, 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 16.7. Rights of the Trustee; Holders of the Senior
Indebtedness.

                                       56
<Page>

         (a)      The Trustee in its individual capacity shall be entitled to
all the rights set forth in this Article XVI 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 shall deprive the Trustee of
any of its rights as such holder. The Trustee's right to compensation and
reimbursement of expenses as set forth in Section 9.7 shall not be subject to
the subordination provisions of this Article XVI.

         (b)      With respect to the holders of the Senior Indebtedness, the
Trustee undertakes to perform or to observe only such of its covenants and
obligations as are specifically set forth in this Article XVI, and no implied
covenants or obligations with respect to the holders of such Senior Indebtedness
shall be read into this Indenture against the Trustee. The Trustee shall not be
deemed to owe any fiduciary duty to the holders of such Senior Indebtedness and,
subject to the provisions of Section 9.1, the Trustee shall not be liable to any
holder of such Senior Indebtedness if it shall pay over or deliver to holders of
Debentures, 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 XVI or
otherwise.

         Section 16.8. Subordination may not be Impaired.

         (a)      No right of any present or future holder of any Senior
Indebtedness 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.

         (b)      Without in any way limiting the generality of the foregoing
paragraph, the holders of Senior Indebtedness may, at any time and from time to
time, without the consent of or notice to the Trustee or the holders of the
Debentures, without incurring responsibility to the holders of the Debentures
and without impairing or releasing the subordination provided in this Article
XVI or the obligations hereunder of the holders of the Debentures to the holders
of such Senior Indebtedness, do any one or more of the following: (i) change the
manner, place or terms of 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; (ii) sell, exchange,
release or otherwise deal with any property pledged, mortgaged or otherwise
securing such Senior Indebtedness; (iii) release any Person liable in any manner
for the collection of such Senior Indebtedness; and (iv) exercise or refrain
from exercising any rights against the Company and any other Person.

                                       57
<Page>

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

                                           MB FINANCIAL, INC.

                                           By:   /s/ Jill E. York
                                                 -------------------------------
                                           Name:  Jill E. York
                                                 -------------------------------
                                           Title: Vice President and Chief
                                                    Financial Officer
                                                 -------------------------------

Attest:
/s/ Doria Koros
-------------------------------
Doria Koros
Secretary                                  WILMINGTON TRUST COMPANY, AS TRUSTEE

                                           By:   /s/ Kathleen A. Pedelini
                                                 -------------------------------
                                           Name: Kathleen A Pedelini
                                                 -------------------------------
                                           Title: Administrative Account Manager
                                                 -------------------------------

Attest:

-------------------------------

                                       58
<Page>

STATE OF ILLINOIS                   )
                                    ) ss
COUNTY OF COOK                      )

         On this __ day of ____________, 2002, before me appeared, to me
personally known, who, being by me duly sworn, did say that he is the
____________ of MB Financial, Inc., and that the seal affixed to said instrument
is the corporate seal of said corporation, and that said instrument was signed
and sealed in behalf of said corporation by authority of its Board of Directors
and said _____________ acknowledged said instrument to be the free act and deed
of said corporation.

         In testimony whereof I have hereunto set my hand and affixed my
official seal at my office in said county and state the day and year last above
written.

                                            ------------------------------------
                                            Notary Public

                                            My term expires:
                                                            --------------------

STATE OF DELAWARE                   )
                                    ) ss
COUNTY OF                           )

         On this ______ day of __________, 2002, before me appeared
___________________, to me personally known, who, being by me duly sworn, did
say that he is the _____________________ of Wilmington Trust Company, and that
the seal affixed to said instrument is the corporate seal of said corporation,
and that said instrument was signed and sealed in behalf of said corporation by
authority of its Board of Directors and said _____________________________,
acknowledged said instrument to be the free act and deed of said corporation.

         In testimony whereof I have hereunto set my hand and affixed my
official seal at my office in said county and commonwealth the day and year last
above written.

                                            ------------------------------------
                                            Notary Public

                                            My term expires:
                                                            --------------------

                                       59
<Page>

                                    EXHIBIT A

                           (Form of Face of Debenture)

No. 1                                                          $53,625,000.

CUSIP No. 552640AA6.

                               MB FINANCIAL, INC.

                         8.60% SUBORDINATED DEBENTURE

                                    DUE 2032

         MB Financial, Inc., a Maryland corporation (the "Company," which
term includes any successor corporation under the Indenture hereinafter
referred to), for value received, hereby promises to pay to Wilmington Trust
Company, as Property Trustee for MB Financial Capital Trust I, or registered
assigns, the principal sum of Fifty-Three Million Six Hundred Twenty-Five
Thousand ($53,625,000) on September 30, 2032 (the "Stated Maturity"), and to
pay interest on said principal sum from September 30, 2002, 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 March 31, June 30, September 30
and December 31 of each year commencing September 30, 2002, at the rate of
8.60% per annum 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 the same rate per annum compounded quarterly. The
amount of interest payable on any Interest Payment Date shall be computed on
the basis of a 360-day year of twelve 30-day months. The amount of interest
for any partial period shall be computed on the basis of the number of days
elapsed in a 360-day year of twelve 30-day months. In the event that any date
on which interest is payable on this Debenture is not a business day, then
payment of interest payable on such date shall be made on the next succeeding
day that is a business day (and without any interest or other payment in
respect of any such delay) except that, if such business day is in the next
succeeding calendar year, payment of such interest will be made on the
immediately preceding business day, in each case, with the same force and
effect as if made on such date. The interest installment so payable, and
punctually paid or duly provided for, on any Interest Payment Date shall, as
provided in the Indenture, be paid to the person in whose name this Debenture
(or one or more Predecessor Debentures, as defined in said Indenture) is
registered at the close of business on the regular record date for such
interest installment, which shall be the fifteenth day of the last month of
the calendar quarter. 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 Debenture (or one or more Predecessor Debentures) 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 thereof shall be fixed by the
Trustee for the payment of such defaulted interest, notice thereof shall be
given to the registered holders of the Debentures not less than 10 days prior
to such special record date, or may be paid at any time in any other lawful
manner not inconsistent with the requirements of any securities exchange or
quotation system on or in which the Debentures may be listed or quoted,

                                       A-1
<Page>

and upon such notice as may be required by such exchange. The principal of
and the interest on this Debenture shall be payable at the office or agency
of the Trustee 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 appear in the Debenture Register.
Notwithstanding the foregoing, so long as the holder of this Debenture is the
Property Trustee, the payment of the principal of and interest on this
Debenture shall be made at such place and to such account as may be
designated by the Trustee.

         The Stated Maturity may be shortened at any time by the Company to any
date not earlier than September 30, 2007, subject to the Company having received
prior approval of the Federal Reserve if then required under applicable capital
guidelines, policies or regulations of the Federal Reserve.

         The indebtedness evidenced by this Debenture 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 (as defined in the Indenture). This
Debenture is issued subject to the provisions of the Indenture with respect
thereto. Each holder of this Debenture, by accepting the same, (a) agrees to and
shall be bound by such provisions; (b) authorizes and directs the Trustee on his
or her behalf to take such action as may be necessary or appropriate to
acknowledge or effectuate the subordination so provided; and (c) appoints the
Trustee his or her attorney-in-fact for any and all such purposes. Each holder
hereof, by his or her 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.

         This Debenture shall not be entitled to any benefit under the Indenture
hereinafter referred to, 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 Debenture 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-2
<Page>

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

Dated: _______________ __, 2002

                                           MB FINANCIAL, INC.

                                           By:
                                                 -------------------------------
                                           Name:
                                                 -------------------------------
                                           Title:
                                                 -------------------------------

Attest:

By:
      -----------------------------
Name:
      -----------------------------
Title:
      -----------------------------

                                       A-3
<Page>

                     [Form of Certificate of Authentication]

                          CERTIFICATE OF AUTHENTICATION

         This is one of the Debentures described in the within-mentioned
Indenture.

Dated: _________________, 2002

Wilmington Trust Company,                         ------------------------------
as Trustee                                  or    Authenticating Agent

By:                                               By:
         -----------------------                     ---------------------------
         Authorized Signatory

                                       A-4
<Page>

                         [Form of Reverse of Debenture]

                      8.60% SUBORDINATED DEBENTURE DUE 2032

                                   (CONTINUED)

         This Debenture is one of the subordinated debentures of the Company
(herein sometimes referred to as the "Debentures"), all issued or to be
issued under and pursuant to an Indenture dated as of August 16, 2002 (the
"Indenture") duly executed and delivered between the Company and Wilmington
Trust Company, as Trustee (the "Trustee"), to which Indenture 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 Debentures. The Debentures are limited in aggregate
principal amount as specified in the Indenture.

         Because of the occurrence and continuation of a Special Event (as
defined in the Indenture), in certain circumstances, this Debenture may become
due and payable at the principal amount together with any interest accrued
thereon (the "Redemption Price"). The Redemption Price shall be paid prior to
12:00 noon. Eastern Standard Time, on the date of such redemption or at such
earlier time as the Company determines. The Company shall have the right as set
forth in the Indenture to redeem this Debenture at the option of the Company,
without premium or penalty, in whole or in part at any time on or after
September 30, 2007 (an "Optional Redemption"), or at any time in certain
circumstances upon the occurrence of a Special Event, at a Redemption Price
equal to 100% of the principal amount hereof plus any accrued but unpaid
interest hereon, to the date of such redemption. Any redemption pursuant to this
paragraph shall be made upon not less than thirty (30) days' nor more than sixty
(60) days' notice, at the Redemption Price. The Redemption Price shall be paid
at the time and in the manner provided therefor in the Indenture. If the
Debentures are only partially redeemed by the Company pursuant to an Optional
Redemption, the Debentures shall be redeemed pro rata or by lot or by any other
method utilized by the Trustee as described in the Indenture. In the event of an
Optional Redemption of this Debenture in part only, a new Debenture or
Debentures for the unredeemed portion hereof shall be issued in the name of the
holder hereof upon the cancellation hereof.

         In case an Event of Default (as defined in the Indenture) shall have
occurred and be continuing, the principal of all of the Debentures may be
declared, and upon such declaration shall become, due and payable, in the
manner, with the effect and subject to the conditions provided in the Indenture.

         The Indenture contains provisions permitting the Company and the
Trustee, with the consent of the holders of not less than a majority in
aggregate principal amount of the Debentures at the time Outstanding (as defined
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 Debentures; provided, however, that no such
supplemental indenture shall, except as provided in the Indenture, (i) extend
the fixed maturity of the Debentures, reduce the principal amount thereof, or
reduce the rate or extend the time of payment of interest thereon without the
consent of the holder of each Debenture so affected thereby; or (ii) reduce the
aforesaid percentage of the Debentures, the holders of which are required to
consent to any such supplemental indenture, without the consent of the holder of
each Debenture then Outstanding

                                       A-5
<Page>

and so affected thereby. The Indenture also contains provisions permitting the
holders of a majority in aggregate principal amount of the Debentures at the
time Outstanding, on behalf of all of the holders of the Debentures, 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 default in the payment of the principal of or interest on any of the
Debentures. Any such consent or waiver by the registered holder of this
Debenture (unless revoked as provided in the Indenture) shall be conclusive and
binding upon such holder and upon all future holders and owners of this
Debenture and of any Debenture 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 Debenture.

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

         The Company, as further described in the Indenture, shall have the
right at any time during the term of the Debentures and from time to time to
defer payments of interest by extending the interest payment period of such
Debentures for up to twenty (20) consecutive quarters (each, an "Extension
Period"), at the end of which period the Company shall pay all interest then
accrued (together with interest thereon at the rate specified for the Debentures
to the extent that payment of such interest is enforceable under applicable
law). Before the termination of any such Extension Period, so long as no Event
of Default shall have occurred and be continuing, the Company may further extend
such Extension Period, provided that such Extension Period together with all
such further extensions thereof shall not exceed twenty (20) consecutive
quarters, extend beyond September 30, 2032, or end on a date other than an
Interest Payment Date. At the termination of any such Extension Period and upon
the payment of all Deferred Payments then due, the Company may commence a new
Extension Period.

         As provided in the Indenture and subject to certain limitations therein
set forth, this Debenture is transferable by the registered holder hereof on the
Debenture Register (as defined in the Indenture) of the Company, upon surrender
of this Debenture for registration of transfer at the office or agency of the
Trustee 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 his or her attorney duly authorized in writing, and thereupon
one or more new Debentures of authorized denominations and for the same
aggregate principal amount shall be issued to the designated transferee or
transferees. No service charge shall be made for any such transfer, but the
Company may require payment of a sum sufficient to cover any tax or other
governmental charge payable in relation thereto.

         Prior to due presentment for registration of transfer of this
Debenture, the Company, the Trustee, any Paying Agent (as defined in the
Indenture) and the Debenture Registrar may deem and treat the registered holder
hereof as the absolute owner hereof (whether or not this Debenture shall be
overdue and notwithstanding any notice of ownership or writing hereon made by
anyone other than the Debenture Registrar) for the purpose of receiving payment
of or on account of the principal hereof and interest due hereon and for all
other purposes, and neither the Company nor the Trustee nor any Paying Agent nor
any Debenture Registrar shall be affected by any notice to the contrary.

                                       A-6
<Page>

         No recourse shall be had for the payment of the principal of or the
interest on this Debenture, 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 Debentures are issuable only in registered form without coupons in
denominations of $25 and any integral multiple thereof (or such other
denominations and any integral multiple thereof as may be deemed necessary by
the Company for the purpose of maintaining the eligibility of the Debentures for
listing on a national securities exchange or inclusion in a comparable automated
quotation system.

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

                                       A-7<Page>

                                                           Exhibit 4.2

================================================================================

                          MB FINANCIAL CAPITAL TRUST I

                              AMENDED AND RESTATED

                                 TRUST AGREEMENT

                                      AMONG

                        MB FINANCIAL, INC., AS DEPOSITOR

                  WILMINGTON TRUST COMPANY, AS PROPERTY TRUSTEE

                 WILMINGTON TRUST COMPANY, AS DELAWARE TRUSTEE,

                                       AND

                    THE ADMINISTRATIVE TRUSTEES NAMED HEREIN

                          DATED AS OF August 16, 2002

================================================================================

<Page>

                                TABLE OF CONTENTS

<Table>
<Caption>
                                                                                                           Page

<S>                                                                                                        <C>
ARTICLE I.         DEFINITIONS..........................................................................     2
            Section 101.     Definitions................................................................     2

ARTICLE II.        ESTABLISHMENT OF THE TRUST...........................................................    10
            Section 201.     Name.......................................................................    10
            Section 202.     Office of the Delaware Trustee; Principal Place of
                             Business...................................................................    10
            Section 203.     Initial Contribution of Trust Property; Organizational
                             Expenses...................................................................    11
            Section 204.     Issuance of the Preferred Securities.......................................    11
            Section 205.     Issuance of the Common Securities; Subscription and
                             Purchase of the Debentures.................................................    11
            Section 206.     Declaration of Trust.......................................................    12
            Section 207.     Authorization to Enter Into Certain Transactions...........................    12
            Section 208.     Assets of Trust............................................................    16
            Section 209.     Title to Trust Property....................................................    16

ARTICLE III.       PAYMENT ACCOUNT......................................................................    16
            Section 301.     Payment Account............................................................    16

ARTICLE IV.        DISTRIBUTIONS; REDEMPTION............................................................    16
            Section 401.     Distributions..............................................................    16
            Section 402.     Redemption.................................................................    17
            Section 403.     Subordination of the Common Securities.....................................    19
            Section 404.     Payment Procedures.........................................................    20
            Section 405.     Tax Returns and Reports....................................................    20
            Section 406.     Payment of Taxes, Duties, Etc. of the Trust................................    20
            Section 407.     Payments under the Indenture...............................................    20

ARTICLE V.         THE TRUST SECURITIES CERTIFICATES....................................................    21
            Section 501.     Initial Ownership..........................................................    21
            Section 502.     The Trust Securities Certificates..........................................    21
            Section 503.     Execution, Authentication and Delivery of the Trust
                             Securities Certificates....................................................    21
            Section 503A.    Global Preferred Security..................................................    22
            Section 504.     Registration of Transfer and Exchange of the Preferred
                             Securities Certificates....................................................    23
            Section 505.     Mutilated, Destroyed, Lost or Stolen Trust Securities
                             Certificates...............................................................    24
            Section 506.     Persons Deemed the Securityholders.........................................    24
            Section 507.     Access to List of the Securityholders' Names and Addresses.................    25

                                       i
<Page>

            Section 508.     Maintenance of Office or Agency............................................    25
            Section 509.     Appointment of the Paying Agent............................................    25
            Section 510.     Ownership of the Common Securities by the Depositor........................    26
            Section 511.     The Trust Securities Certificates..........................................    26
            Section 512.     Notices....................................................................    26
            Section 513.     Rights of the Securityholders..............................................    27

ARTICLE VI.        ACTS OF THE SECURITYHOLDERS; MEETINGS; VOTING........................................    27
            Section 601.     Limitations on Voting Rights...............................................    27
            Section 602.     Notice of Meetings.........................................................    28
            Section 603.     Meetings of the Preferred Securityholders..................................    28
            Section 604.     Voting Rights..............................................................    29
            Section 605.     Proxies, Etc...............................................................    29
            Section 606.     Securityholder Action by Written Consent...................................    29
            Section 607.     Record Date for Voting and Other Purposes..................................    30
            Section 608.     Acts of the Securityholders................................................    30
            Section 609.     Inspection of Records......................................................    31

ARTICLE VII.       REPRESENTATIONS AND WARRANTIES.......................................................    31
            Section 701.     Representations and Warranties of the Bank and the Property
                             Trustee....................................................................    31
            Section 702.     Representations and Warranties of the Delaware Bank and
                             the Delaware...............................................................    32
            Section 703.     Representations and Warranties of the Depositor............................    33

ARTICLE VIII.      FORM OF THE DEBENTURE AND ORIGINAL ISSUE.............................................    34
            Section 801.     Certain Duties and Responsibilities........................................    34
            Section 802.     Certain Notices............................................................    35
            Section 803.     Certain Rights of the Property Trustee.....................................    35
            Section 804.     Not Responsible for Recitals or Issuance of Securities.....................    37
            Section 805.     May Hold Securities........................................................    38
            Section 806.     Compensation; Indemnity; Fees..............................................    38
            Section 807.     Corporate Property Trustee Required; Eligibility of Trustees...............    38
            Section 808.     Conflicting Interests......................................................    39
            Section 809.     Co-Trustees and Separate Trustee...........................................    39
            Section 810.     Resignation and Removal; Appointment of Successor..........................    40
            Section 811.     Acceptance of Appointment by Successor.....................................    42
            Section 812.     Merger, Conversion, Consolidation or Succession to
                             Business...................................................................    42
            Section 813.     Preferential Collection of Claims Against Depositor or Trust...............    43
            Section 814.     Reports by the Property Trustee............................................    43
            Section 815.     Reports to the Property Trustee............................................    43
            Section 816.     Evidence of Compliance with Conditions Precedent...........................    43
            Section 817.     Number of Trustees.........................................................    43
            Section 818.     Delegation of Power........................................................    44
            Section 819.     Voting.....................................................................    44

                                       ii
<Page>

ARTICLE IX.        TERMINATION, LIQUIDATION AND MERGER..................................................    44
            Section 901.     Termination upon Expiration Date...........................................    44
            Section 902.     Early Termination..........................................................    44
            Section 903.     Termination................................................................    45
            Section 904.     Liquidation................................................................    45
            Section 905.     Mergers, Consolidations, Amalgamations or Replacements
                             of the Trust...............................................................    46

ARTICLE X.         MISCELLANEOUS PROVISIONS.............................................................    47
            Section 1001.    Limitation of Rights of the Securityholders................................    47
            Section 1002.    Amendment..................................................................    48
            Section 1003.    Separability...............................................................    49
            Section 1004.    Governing Law..............................................................    49
            Section 1005.    Payments Due on Non-Business Day...........................................    49
            Section 1006.    Successors.................................................................    49
            Section 1007.    Headings...................................................................    50
            Section 1008.    Reports, Notices and Demands...............................................    50
            Section 1009.    Agreement not to Petition..................................................    50
            Section 1010.    Trust Indenture Act; Conflict with Trust Indenture Act.....................    51
            Section 1011.    Acceptance of Terms of the Trust Agreement, the Guarantee
                             and the Indenture..........................................................    51

EXHIBITS

            Exhibit A        Certificate of Trust.......................................................    A-1
            Exhibit B        Form of Common Securities Certificate......................................    B-1
            Exhibit C        Form of Expense Agreement..................................................    C-1
            Exhibit D        Form of Preferred Securities Certificate...................................    D-1
            Exhibit E        Form of Certificate of Authentication......................................    E-1
</Table>

                                       iii
<Page>

                              CROSS-REFERENCE TABLE

<Table>
<Caption>
Section of Trust
Indenture Act of                                                                       Section of
1939, as amended                                                                       Indenture
----------------                                                                       ----------

<S>                                                                                  <C>
310(a)(1)          .............................................................          807
310(a)(2)          .............................................................          807
310(a)(3)          .............................................................          807
310(a)(4)          .............................................................       207(a)(ii)
310(b)             .............................................................          808
311(a)             .............................................................          813
311(b)             .............................................................          813
312(a)             .............................................................          507
312(b)             .............................................................          507
312(c)             .............................................................          507
313(a)             .............................................................         814(a)
313(a)(4)          .............................................................         814(b)
313(b)             .............................................................         814(b)
313(c)             .............................................................          1008
313(d)             .............................................................         814(c)
314(a)             .............................................................          815
314(b)             .............................................................     Not Applicable
314(c)(1)          .............................................................          816
314(c)(2)          .............................................................          816
314(c)(3)          .............................................................     Not Applicable
314(d)             .............................................................     Not Applicable
314(e)             .............................................................        101, 816
315(a)             .............................................................     801(a), 803(a)
315(b)             .............................................................       802, 1008
315(c)             .............................................................         801(a)
315(d)             .............................................................        801, 803
316(a)(2)          .............................................................     Not Applicable
316(b)             .............................................................     Not Applicable
316(c)             .............................................................          607
317(a)(1)          .............................................................     Not Applicable
317(a)(2)          .............................................................     Not Applicable
317(b)             .............................................................          509
318(a)             .............................................................          1010
</Table>

Note:  This Cross-Reference Table does not constitute part of this Agreement and
shall not affect any interpretation of any of its terms or provisions.

                                       iv
<Page>

                      AMENDED AND RESTATED TRUST AGREEMENT

         AMENDED AND RESTATED TRUST AGREEMENT, dated as of August 16, 2002,
among (a) MB FINANCIAL, INC., a Maryland corporation (including any
successors or assigns, the "Depositor"), (b) WILMINGTON TRUST COMPANY, a
banking corporation duly organized and existing under the laws of Delaware,
as property trustee (the "Property Trustee" and, in its separate corporate
capacity and not in its capacity as Property Trustee, the "Bank"), (c)
WILMINGTON TRUST COMPANY, a banking corporation duly organized and existing
under the laws of the State of Delaware, as Delaware trustee (the "Delaware
Trustee," and, in its separate corporate capacity and not in its capacity as
Delaware Trustee, the "Delaware Bank"), (d) MITCHELL FEIGER, an individual,
JILL E. YORK, an individual, and DORIA L. KOROS, an individual, each of whose
address is c/o MB Financial, Inc., 801 West Madison Street, Chicago, Illinois
60607 (each an "Administrative Trustee" and collectively the "Administrative
Trustees") (the Property Trustee, the Delaware Trustee and the Administrative
Trustees referred to collectively as the "Trustees"), and (e) the several
Holders (as hereinafter defined).

                                    RECITALS

         WHEREAS, the Depositor and the Delaware Trustee have heretofore duly
declared and established a business trust pursuant to the Delaware Business
Trust Act (as hereinafter defined) by the entering into of that certain Trust
Agreement, dated as of July 22, 2002 (the "Original Trust Agreement"), and by
the execution and filing by the Delaware Trustee, the Depositor and the
Administrative Trustees with the Secretary of State of the State of Delaware of
the Certificate of Trust, filed on July 22, 2002, the form of which is attached
as Exhibit A; and

         WHEREAS, the Depositor, the Delaware Trustee, the Property Trustee and
the Administrative Trustees desire to amend and restate the Original Trust
Agreement in its entirety as set forth herein to provide for, among other
things, (a) the issuance of the Common Securities (as defined herein) by the
Trust (as defined herein) to the Depositor; (b) the issuance and sale of the
Preferred Securities (as defined herein) by the Trust pursuant to the
Underwriting Agreement (as defined herein); (c) the acquisition by the Trust
from the Depositor of all of the right, title and interest in the Debentures (as
defined herein); and (d) the appointment of the Trustees;

         NOW THEREFORE, in consideration of the agreements and obligations set
forth herein and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, each party, for the benefit of the
other parties and for the benefit of the Securityholders (as defined herein),
hereby amends and restates the Original Trust Agreement in its entirety and
agrees as follows:

<Page>

                                   ARTICLE I.

                                  DEFINED TERMS

         Section 101. Definitions. For all purposes of this Trust Agreement,
except as otherwise expressly provided or unless the context otherwise requires:

         (a)      the terms defined in this Article I have the meanings assigned
to them in this Article I and include the plural as well as the singular;

         (b)      all other terms used herein that are defined in the Trust
Indenture Act, either directly or by reference therein, have the meanings
assigned to them therein;

         (c)      unless the context otherwise requires, any reference to an
"Article" or a "Section" refers to an Article or a Section, as the case may be,
of this Trust Agreement; and

         (d)      the words "herein", "hereof" and "hereunder" and other words
of similar import refer to this Trust Agreement as a whole and not to any
particular Article, Section or other subdivision.

         "Act" has the meaning specified in Section 608.

         "Additional Amount" means, with respect to Trust Securities of a given
Liquidation Amount and/or a given period, the amount of additional interest
accrued on interest in arrears and paid by the Depositor on a Like Amount of
Debentures for such period.

         "Additional Payments" has the meaning specified in Section 1.1 of the
Indenture.

         "Administrative Trustee" means each of Mitchell Feiger, Jill York and
Doria Koros, solely in his or her capacity as Administrative Trustee of the
Trust formed and continued hereunder and not in his or her individual capacity,
or such Administrative Trustee's successor in interest in such capacity, or any
successor trustee appointed as herein provided.

         "Affiliate" means, with respect to a specified Person, (a) any Person
directly or indirectly owning, controlling or holding with power to vote 10% or
more of the outstanding voting securities or other ownership interests of the
specified Person; (b) any Person 10% or more of whose outstanding voting
securities or other ownership interests are directly or indirectly owned,
controlled or held with power to vote by the specified Person; (c) any Person
directly or indirectly controlling, controlled by, or under common control with
the specified Person; (d) a partnership in which the specified Person is a
general partner; (e) any officer or director of the specified Person; and (f) if
the specified Person is an individual, any entity of which the specified Person
is an officer, director or general partner.

         "Authenticating Agent" means an authenticating agent with respect to
the Preferred Securities appointed by the Property Trustee pursuant to Section
503.

                                        2
<Page>

         "Bank" has the meaning specified in the Preamble to this Trust
Agreement.

         "Bankruptcy Event" means, with respect to any Person:

         (a)      the entry of a decree or order by a court having jurisdiction
in the premises adjudging such Person a bankrupt or insolvent, or approving as
properly filed a petition seeking liquidation or reorganization of or in respect
of such Person under the United States Bankruptcy Code of 1978, as amended, or
any other similar applicable federal or state law, and the continuance of any
such decree or order unvacated and unstayed for a period of ninety (90) days; or
the commencement of an involuntary case under the United States Bankruptcy Code
of 1978, as amended, in respect of such Person, which shall continue undismissed
for a period of ninety (90) days or entry of an order for relief in such case;
or the entry of a decree or order of a court having jurisdiction in the premises
for the appointment on the ground of insolvency or bankruptcy of a receiver,
custodian, liquidator, trustee or assignee in bankruptcy or insolvency of such
Person or of its property, or for the winding up or liquidation of its affairs,
and such decree or order shall have remained in force unvacated and unstayed for
a period of ninety (90) days; or

         (b)      the institution by such Person of proceedings to be
adjudicated a voluntary bankrupt, or the consent by such Person to the filing of
a bankruptcy proceeding against it, or the filing by such Person of a petition
or answer or consent seeking liquidation or reorganization under the United
States Bankruptcy Code of 1978, as amended, or other similar applicable Federal
or State law, or the consent by such Person to the filing of any such petition
or to the appointment on the ground of insolvency or bankruptcy of a receiver or
custodian or liquidator or trustee or assignee in bankruptcy or insolvency of
such Person or of its property, or shall make a general assignment for the
benefit of creditors.

         "Bankruptcy Laws" has the meaning specified in Section 1009.

         "Board Resolution" means a copy of a resolution certified by the
Secretary or an Assistant Secretary of the Depositor to have been duly adopted
by the Depositor's Board of Directors, or such committee of the Board of
Directors or officers of the Depositor to which authority to act on behalf of
the Board of Directors has been delegated, and to be in full force and effect on
the date of such certification, and delivered to the appropriate Trustee.

         "Business Day" means any day other than a Saturday or Sunday or a day
on which federal or state banking institutions in the Borough of Manhattan, the
City of New York are authorized or required by law, executive order or
regulation to close, or a day on which the Corporate Trust Office of the
Property Trustee or the Corporate Trust Office of the Debenture Trustee is
closed for business.

         "Certificate Depositary Agreement" means the agreement among Depositor,
Trust and DTC, as the initial Clearing Agency, dated as of the Closing Date, in
customary form, as the same may be amended and supplemented from time to time.

         "Certificate of Trust" means the certificate of trust filed with the
Secretary of State of the State of Delaware with respect to the Trust, as
amended or restated from time to time.

                                        3
<Page>

         "Clearing Agency" means an organization registered as a "clearing
agency" pursuant to Section 17A of the Securities Exchange Act of 1934, as
amended. DTC shall be the initial Clearing Agency.

         "Clearing Agency Participant" means a broker, dealer, bank or other
financial institution or other Person for whom from time to time a Clearing
Agency effects book-entry transfers and pledges of securities deposited with the
Clearing Agency.

         "Closing Date" means the date of execution and delivery of this Trust
Agreement.

         "Code" means the Internal Revenue Code of 1986, as amended.

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

         "Common Securities Certificate" means a certificate evidencing
ownership of Common Securities, substantially in the form attached as Exhibit B.

         "Common Security" means an undivided beneficial interest in the assets
of the Trust, having a Liquidation Amount of $25 and having the rights provided
therefor in this Trust Agreement, including the right to receive Distributions
and a Liquidation Distribution as provided herein.

         "Company" means MB Financial, Inc., a Maryland corporation and
registered bank holding company under the Bank Holding Company Act of 1956, as
amended.

         "Corporate Trust Office" means the office at which, at any particular
time, the corporate trust business of the Property Trustee or the Debenture
Trustee, as the case may be, shall be principally administered, which office at
the date hereof, in each such case, is located at Rodney Square North, 1100
North Market Street, Wilmington, Delaware 19890-0001, Attention: Corporate Trust
Department.

         "Debenture Event of Default" means an "Event of Default" as defined in
Section 7.1 of the Indenture.

         "Debenture Redemption Date" means, with respect to any Debentures to be
redeemed under the Indenture, the date fixed for redemption under the Indenture.

         "Debenture Tax Event" means a "Tax Event" as specified in Section 1.1
of the Indenture.

         "Debenture Trustee" means Wilmington Trust Company, a banking
corporation organized under the laws of the State of Delaware and any successor
thereto, as trustee under the Indenture.

                                        4
<Page>

         "Debentures" means the $53,625,000 (or $61,668,750 if the
Underwriters exercise their Option as such term is defined in the
Underwriters Agreement) aggregate principal amount of the Depositor's 8.60%
Subordinated Debentures due 2032, issued pursuant to the Indenture.

         "Definitive Preferred Securities Certificates" means Preferred
Securities Certificates issued in certificated, fully registered form as
provided in Section 511.

         "Delaware Bank" has the meaning specified in the Preamble to this Trust
Agreement.

         "Delaware Business Trust Act" means Chapter 38 of Title 12 of the
Delaware Code, 12 Delaware Code Sections 3801 et seq. as it may be amended from
time to time.

         "Delaware Trustee" means the commercial bank or trust company
identified as the "Delaware Trustee" in the Preamble to this Trust Agreement
solely in its capacity as Delaware Trustee of the Trust formed and continued
hereunder and not in its individual capacity, or its successor in interest in
such capacity, or any successor trustee appointed as herein provided.

         "Depositary" means DTC or any successor thereto.

         "Depositor" has the meaning specified in the Preamble to this Trust
Agreement.

         "Distribution Date" has the meaning specified in Section 401(a).

         "Distributions" means amounts payable in respect of the Trust
Securities as provided in Section 401.

         "DTC" means The Depository Trust Company.

         "Early Termination Event" has the meaning specified in Section 902.

         "Event of Default" means any one of the following events (whatever the
reason for such Event of Default and whether it shall be voluntary or
involuntary or be effected by operation of law or pursuant to any judgment,
decree or order of any court or any order, rule or regulation of any
administrative or governmental body):

         (a)      the occurrence of a Debenture Event of Default; or

         (b)      default by the Trust or the Property Trustee in the payment of
any Distribution when it becomes due and payable, and continuation of such
default for a period of thirty (30) days; or

         (c)      default by the Trust or the Property Trustee in the payment of
any Redemption Price of any Trust Security when it becomes due and payable; or

         (d)      default in the performance, or breach, in any material
respect, of any covenant or warranty of the Trustees in this Trust Agreement
(other than a covenant or warranty a default in

                                        5
<Page>

the performance of which or the breach of which is dealt with in clause (b) or
(c), above) and continuation of such default or breach for a period of sixty
(60) days after there has been given, by registered or certified mail, to the
defaulting Trustee or Trustees by the Holders of at least 25% in aggregate
Liquidation Amount of the Outstanding Preferred 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

         (e)      the occurrence of a Bankruptcy Event with respect to the
Property Trustee and the failure by the Depositor to appoint a successor
Property Trustee within sixty (60) days thereof.

         "Exchange Act" means the Securities Exchange Act of 1934, as amended.

         "Expense Agreement" means the Agreement as to Expenses and Liabilities
between the Depositor and the Trust, substantially in the form attached as
Exhibit C, as amended from time to time.

         "Expiration Date" has the meaning specified in Section 901.

         "Extended Interest Period" has the meaning specified in Section 4.1 of
the Indenture.

         "Global Preferred Securities Certificate" means a Preferred Securities
Certificate evidencing ownership of Global Preferred Securities.

         "Global Preferred Security" means a Preferred Security, the ownership
and transfer of which shall be made through book entries by a Clearing Agency as
described herein.

         "Guarantee" means the Preferred Securities Guarantee Agreement executed
and delivered by the Depositor and Wilmington Trust Company, as trustee,
contemporaneously with the execution and delivery of this Trust Agreement, for
the benefit of the Holders of the Preferred Securities, as amended from time to
time.

         "Indenture" means the Indenture, dated as of August 16, 2002,
between the Depositor and the Debenture Trustee, as trustee, as amended or
supplemented from time to time, pertaining to the Debentures of the Depositor.

         "Investment Company Act," means the Investment Company Act of 1940, as
amended, as in effect at the date of execution of this instrument.

         "Investment Company Event" means the receipt by the Trust and the
Depositor of an Opinion of Counsel, rendered by counsel experienced in such
matters within a reasonable period of time after the applicable occurrence, to
the effect that, as a result of the occurrence of a change in law or regulation
or a change in interpretation or application of law or regulation by any
legislative body, court, governmental agency or regulatory authority (a "Change
in 1940 Act Law"), the Trust is or shall be considered an "investment company"
that is required to be registered under the Investment Company Act, which Change
in 1940 Act Law becomes

                                        6
<Page>

effective on or after the date of original issuance of the Preferred Securities
under this Trust Agreement.

         "Lien" means any lien, pledge, charge, encumbrance, mortgage, deed of
trust, adverse ownership interest, hypothecation, assignment, security interest
or preference, priority or other security agreement or preferential arrangement
of any kind or nature whatsoever.

         "Like Amount" means (a) with respect to a redemption of Trust
Securities, Trust Securities having an aggregate Liquidation Amount equal to the
aggregate principal amount of Debentures to be contemporaneously redeemed in
accordance with the Indenture and the proceeds of which shall be used to pay the
Redemption Price of such Trust Securities; and (b) with respect to a
distribution of Debentures to Holders of Trust Securities in connection with a
termination or liquidation of the Trust, Debentures having a principal amount
equal to the Liquidation Amount of the Trust Securities of the Holder to whom
such Debentures are distributed. Each Debenture distributed pursuant to clause
(b) above shall carry with it accrued interest in an amount equal to the accrued
and unpaid interest then due on such Debenture.

         "Liquidation Amount" means the stated amount of $25 per Trust Security.

         "Liquidation Date" means the date on which Debentures are to be
distributed to Holders of Trust Securities in connection with a termination and
liquidation of the Trust pursuant to Section 904(a).

         "Liquidation Distribution" has the meaning specified in Section 904(d).

         "Officers' Certificate" means a certificate signed by the President and
Chief Executive Officer or a Senior or Executive Vice President and by the
Treasurer or an Assistant Treasurer or the Controller or an Assistant Controller
or the Secretary or an Assistant Secretary of the Depositor, and delivered to
the appropriate Trustee. One of the officers signing an Officers' Certificate
given pursuant to Section 816 shall be the principal executive, financial or
accounting officer of the Depositor. Any Officers' Certificate delivered with
respect to compliance with a condition or covenant provided for in this Trust
Agreement shall include:

         (a)      a statement that each officer signing the Officers'
Certificate has read the covenant or condition and the definitions relating
thereto;

         (b)      a brief statement of the nature and scope of the examination
or investigation undertaken by each officer in rendering the Officers'
Certificate;

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

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

                                        7
<Page>

         "Opinion of Counsel" means an opinion in writing of independent outside
legal counsel, who may be counsel for the Trust, the Property Trustee, the
Delaware Trustee or the Depositor, and who shall be reasonably acceptable to the
Property Trustee.

         "Option" has the meaning specified in the Underwriting Agreement.

         "Original Trust Agreement" has the meaning specified in the Recitals to
this Trust Agreement.

         "Outstanding", when used with respect to the Preferred Securities,
means, as of the date of determination, all of the Preferred Securities
theretofore executed and delivered under this Trust Agreement, except:

         (a)      the Preferred Securities theretofore canceled by the Property
Trustee or delivered to the Property Trustee for cancellation;

         (b)      the Preferred Securities for whose payment or redemption money
in the necessary amount has been theretofore deposited with the Property Trustee
or any Paying Agent for the Holders of such Preferred Securities; provided that,
if such Preferred Securities are to be redeemed, notice of such redemption has
been duly given pursuant to this Trust Agreement; and

         (c)      the Preferred Securities which have been paid or in exchange
for or in lieu of which other Preferred Securities have been executed and
delivered pursuant to Sections 504, 505, 511 and 513; provided, however, that in
determining whether the Holders of the requisite Liquidation Amount of the
Outstanding Preferred Securities have given any request, demand, authorization,
direction, notice, consent or waiver hereunder, the Preferred Securities owned
by the Depositor, any Trustee or any Affiliate of the Depositor or any Trustee
shall be disregarded and deemed not to be Outstanding, except that (i) in
determining whether any Trustee shall be protected in relying upon any such
request, demand, authorization, direction, notice, consent or waiver, only the
Preferred Securities that such Trustee knows to be so owned shall be so
disregarded; and (ii) the foregoing shall not apply at any time when all of the
Outstanding Preferred Securities are owned by the Depositor, one or more of the
Trustees and/or any such Affiliate. The Preferred Securities so owned which have
been pledged in good faith may be regarded as Outstanding if the pledgee
establishes to the satisfaction of the Administrative Trustees the pledgee's
right so to act with respect to such Preferred Securities and the pledgee is not
the Depositor or any other Obligor upon the Preferred Securities or a Person
directly or indirectly controlling or controlled by or under direct or indirect
common control with the Depositor or any Affiliate of the Depositor.

         "Paying Agent" means any paying agent or co-paying agent appointed
pursuant to Section 509 and shall initially be the Bank.

         "Payment Account" means a segregated non-interest-bearing corporate
trust account maintained by the Property Trustee with the Bank in its trust
department for the benefit of the Securityholders in which all amounts paid in
respect of the Debentures shall be held and from

                                        8
<Page>

which the Property Trustee shall make payments to the Securityholders in
accordance with Sections 401 and 402.

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

         "Preferred Security" means an undivided beneficial interest in the
assets of the Trust, having a Liquidation Amount of $25 and having the rights
provided therefor in this Trust Agreement, including the right to receive
Distributions and a Liquidation Distribution as provided herein.

         "Preferred Securities Certificate", means a certificate evidencing
ownership of Preferred Securities, substantially in the form attached as Exhibit
D.

         "Property Trustee" means the commercial bank or trust company
identified as the "Property Trustee," in the Preamble to this Trust Agreement
solely in its capacity as Property Trustee of the Trust heretofore formed and
continued hereunder and not in its individual capacity, or its successor in
interest in such capacity, or any successor property trustee appointed as herein
provided.

         "Redemption Date" means, with respect to any Trust Security to be
redeemed, the date fixed for such redemption by or pursuant to this Trust
Agreement; provided that each Debenture Redemption Date and the stated maturity
of the Debentures shall be a Redemption Date for a Like Amount of Trust
Securities.

         "Redemption Price" means, with respect to any Trust Security, the
Liquidation Amount of such Trust Security, plus accumulated and unpaid
Distributions to the Redemption Date, paid by the Depositor upon the concurrent
redemption of a Like Amount of Debentures, allocated on a pro rata basis (based
on Liquidation Amounts) among the Trust Securities.

         "Relevant Trustee" shall have the meaning specified in Section 810.

         "Securities Register" and "Securities Registrar" have the respective
meanings specified in Section 504.

         "Securityholder" or "Holder" means a Person in whose name a Trust
Security is or Trust Securities are registered in the Securities Register; any
such Person is a beneficial owner within the meaning of the Delaware Business
Trust Act.

         "Trust" means the Delaware business trust continued hereby and
identified on the cover page to this Trust Agreement.

         "Trust Agreement" means this Amended and Restated Trust Agreement, as
the same may be modified, amended or supplemented in accordance with the
applicable provisions hereof, including all exhibits hereto, including, for all
purposes of this Trust Agreement and any such

                                        9
<Page>

modification, amendment or supplement, the provisions of the Trust Indenture Act
that are deemed to be a part of and govern this Trust Agreement and any such
modification, amendment or supplement, respectively.

         "Trust Indenture Act" means the Trust Indenture Act of 1939, as
amended, as in force at the date as of which this instrument was executed;
provided, however, that in the event the Trust Indenture Act of 1939, as
amended, is amended after such date, "Trust Indenture Act" means, to the extent
required by any such amendment, the Trust Indenture Act of 1939 as so amended.

         "Trust Property" means (a) the Debentures; (b) the rights of the
Property Trustee under the Guarantee; (c) any cash on deposit in, or owing to,
the Payment Account; and (d) all proceeds and rights in respect of the foregoing
and any other property and assets for the time being held or deemed to be held
by the Property Trustee pursuant to the trusts of this Trust Agreement.

         "Trust Security" means any one of the Common Securities or the
Preferred Securities.

         "Trust Securities Certificate" means any one of the Common Securities
Certificates or the Preferred Securities Certificates.

         "Trustees" means, collectively, the Property Trustee, the Delaware
Trustee and the Administrative Trustees.

         "Underwriting Agreement" means the Underwriting Agreement, dated as
of August 13, 2002, among the Trust, the Depositor, Stifel, Nicolaus &
Company, Incorporated, Legg Mason Wood Walker Incorporated, Howe Barnes
Investments, Inc., Sandler O'Neill & Partners, L.P. and the underwriters
named therein.

                                   ARTICLE II.

                           ESTABLISHMENT OF THE TRUST

         Section 201. Name. The Trust continued hereby shall be known as "MB
Financial Capital Trust I," as such name may be modified from time to time by
the Administrative Trustees following written notice to the Holders of Trust
Securities and the other Trustees, in which name the Trustees may engage in the
transactions contemplated hereby, make and execute contracts and other
instruments on behalf of the Trust and sue and be sued.

         Section 202. Office of the Delaware Trustee; Principal Place of
Business. The address of the Delaware Trustee in the State of Delaware is c/o
Wilmington Trust Company, Rodney Square North, 1100 North Market Street,
Wilmington, Delaware 19890-0001, Attention: Corporate Trust Department, or such
other address in the State of Delaware as the Delaware Trustee may designate by
written notice to the Securityholders and the Depositor. The principal executive
office of the Trust is c/o MB Financial, Inc., 801 West Madison Street, Chicago,
Illinois 60607, Attention: Chief Financial Officer.

                                       10
<Page>

         Section 203. Initial Contribution of Trust Property; Organizational
Expenses. The Trustees acknowledge receipt in trust from the Depositor in
connection with the Original Trust Agreement of the sum of $25, which
constituted the initial Trust Property. The Depositor shall pay organizational
expenses of the Trust as they arise or shall, upon request of any Trustee,
promptly reimburse such Trustee for any such expenses paid by such Trustee. The
Depositor shall make no claim upon the Trust Property for the payment of such
expenses.

         Section 204. Issuance of the Preferred Securities. On August 13,
2002, the Depositor, on behalf of the Trust and pursuant to the Original
Trust Agreement, executed and delivered the Underwriting Agreement.
Contemporaneously with the execution and delivery of this Trust Agreement, an
Administrative Trustee, on behalf of the Trust, shall execute in accordance
with Section 502, and deliver in accordance with the Underwriting Agreement,
Preferred Securities Certificates, registered in the name of the Persons
entitled thereto, in an aggregate amount of 2,080,000 Preferred Securities
having an aggregate Liquidation Amount of $52,000,000 against receipt of the
aggregate purchase price of such Preferred Securities of $52,000,000, which
amount such Administrative Trustee shall promptly deliver to the Property
Trustee. If the underwriters exercise their over-allotment option and there
is an Option Closing Date (as such term is defined in the Underwriting
Agreement), then an Administrative Trustee, on behalf of the Trust, shall
execute in accordance with Section 502 and deliver in accordance with the
Underwriting Agreement, Preferred Securities Certificates, registered in the
name of the Persons entitled thereto in an aggregate amount of up to 312,000
Preferred Securities having an aggregate Liquidation Amount of up to
$7,800,000 against receipt of the aggregate purchase price of such Preferred
Securities of up to $7,800,000, which amount such Administrative Trustee
shall promptly deliver to the Property Trustee.

         Section 205. Issuance of the Common Securities; Subscription and
Purchase of the Debentures.

         (a)      Contemporaneously with the execution and delivery of this
Trust Agreement, an Administrative Trustee, on behalf of the Trust, shall
execute in accordance with Section 502 and deliver to the Depositor, Common
Securities Certificates, registered in the name of the Depositor, in an
aggregate amount of 65,000 Common Securities having an aggregate Liquidation
Amount of $1,625,000 against payment by the Depositor of such amount.
Contemporaneously therewith, an Administrative Trustee, on behalf of the Trust,
shall subscribe to and purchase from the Depositor Debentures, registered in the
name of the Property Trustee on behalf of the Trust and having an aggregate
principal amount equal to $53,625,000, and, in satisfaction of the purchase
price for such Debentures, the Property Trustee, on behalf of the Trust, shall
deliver to the Depositor the sum of $53,625,000.

         (b)      If the underwriters exercise the Option and there is an Option
Closing Date, then an Administrative Trustee, on behalf of the Trust, shall
execute in accordance with Section 502 and deliver to the Depositor, Common
Securities Certificates, registered in the name of the Depositor, in an
additional aggregate amount of 9,750 Common Securities having an aggregate
Liquidation Amount of up to $243,750 against payment by the Depositor of such
amount. Contemporaneously therewith, an Administrative Trustee, on behalf of the
Trust, shall subscribe to and purchase from the Depositor, additional
Debentures, registered in the name of the Trust

                                       11
<Page>

and having an aggregate principal amount of up to $8,043,750, and, in
satisfaction of the purchase price of such Debentures, the Property Trustee, on
behalf of the Trust, shall deliver to the Depositor up to $8,043,750, such
aggregate amount to be equal to the sum of the amounts received from the
Depositor pursuant to 205(b) and from one of the Administrative Trustees
pursuant to the last sentence of Section 204.

         Section 206. Declaration of Trust. The exclusive purposes and functions
of the Trust are (a) to issue and sell Trust Securities and use the proceeds
from such sale to acquire the Debentures; and (b) to engage in those activities
necessary, convenient or incidental thereto. The Depositor hereby appoints the
Trustees as trustees of the Trust, to have all the rights, powers and duties to
the extent set forth herein, and the Trustees hereby accept such appointment.
The Property Trustee hereby declares that it shall hold the Trust Property in
trust upon and subject to the conditions set forth herein for the benefit of the
Securityholders. The Administrative Trustees shall have all rights, powers and
duties set forth herein and in accordance with applicable law with respect to
accomplishing the purposes of the Trust. The Delaware Trustee shall not be
entitled to exercise any powers, nor shall the Delaware Trustee have any of the
duties and responsibilities, of the Property Trustee or the Administrative
Trustees set forth herein. The Delaware Trustee shall be one of the Trustees of
the Trust for the sole and limited purpose of fulfilling the requirements of
Section 3807 of the Delaware Business Trust Act.

         Section 207. Authorization to Enter Into Certain Transactions.

         (a)      The Trustees shall conduct the affairs of the Trust in
accordance with the terms of this Trust Agreement. Subject to the limitations
set forth in paragraph (b) of this Section 207 and Article VIII, and in
accordance with the following provisions (i) and (ii), the Administrative
Trustees shall have the authority to enter into all transactions and agreements
determined by the Administrative Trustees to be appropriate in exercising the
authority, express or implied, otherwise granted to the Administrative Trustees
under this Trust Agreement, and to perform all acts in furtherance thereof,
including without limitation, the following:

                  (i)      As among the Trustees, each Administrative Trustee,
         acting singly or jointly, shall have the power and authority to act on
         behalf of the Trust with respect to the following matters:

                           (A)      the issuance and sale of the Trust
                  Securities and the compliance with the Underwriting Agreement
                  in connection therewith;

                           (B)      to cause the Trust to enter into, and to
                  execute, deliver and perform on behalf of the Trust, the
                  Expense Agreement and such other agreements or documents as
                  may be necessary or desirable in connection with the purposes
                  and function of the Trust;

                           (C)      assisting in the registration of the
                  Preferred Securities under the Securities Act of 1933, as
                  amended, and under state securities or blue sky laws, and the
                  qualification of this Trust Agreement as a trust indenture
                  under the Trust Indenture Act;

                                       12
<Page>

                           (D)      assisting in the inclusion of the Preferred
                  Securities in the Nasdaq National Market or in the listing of
                  the Preferred Securities on such securities exchange or
                  exchanges as shall be determined by the Depositor and the
                  registration of the Preferred Securities under the Exchange
                  Act, and the preparation and filing of all periodic and other
                  reports and other documents pursuant to the foregoing;

                           (E)      the sending of notices (other than notices
                  of default) and other information regarding the Trust
                  Securities and the Debentures to the Securityholders in
                  accordance with this Trust Agreement;

                           (F)      the appointment of a Paying Agent,
                  Authenticating Agent and Securities Registrar in accordance
                  with this Trust Agreement;

                           (G)      to the extent provided in this Trust
                  Agreement, the winding up of the affairs of and liquidation of
                  the Trust and the preparation, execution and filing of the
                  certificate of cancellation with the Secretary of State of the
                  State of Delaware;

                           (H)      to take all action that may be necessary or
                  appropriate for the preservation and the continuation of the
                  Trust's valid existence, rights, franchises and privileges as
                  a statutory business trust under the laws of the State of
                  Delaware and of each other jurisdiction in which such
                  existence is necessary to protect the limited liability of the
                  Holders of the Preferred Securities or to enable the Trust to
                  effect the purposes for which the Trust was created; and

                           (I)      the taking of any action incidental to the
                  foregoing as the Administrative Trustees may from time to time
                  determine is necessary or advisable to give effect to the
                  terms of this Trust Agreement for the benefit of the
                  Securityholders (without consideration of the effect of any
                  such action on any particular Securityholder).

                  (ii)     As among the Trustees, the Property Trustee shall
         have the power, duty and authority to act on behalf of the Trust with
         respect to the following matters:

                           (A)      the establishment of the Payment Account;

                           (B)      the receipt of the Debentures;

                           (C)      the collection of interest, principal and
                  any other payments made in respect of the Debentures in the
                  Payment Account;

                           (D)      the distribution of amounts owed to the
                  Securityholders in respect of the Trust Securities in
                  accordance with the terms of this Trust Agreement;

                                       13
<Page>

                           (E)      the exercise of all of the rights, powers
                  and privileges of a holder of the Debentures;

                           (F)      the sending of notices of default and other
                  information regarding the Trust Securities and the Debentures
                  to the Securityholders in accordance with this Trust
                  Agreement;

                           (G)      the distribution of the Trust Property in
                  accordance with the terms of this Trust Agreement;

                           (H)      to the extent provided in this Trust
                  Agreement, the winding up of the affairs of and liquidation of
                  the Trust;

                           (I)      after an Event of Default, the taking of any
                  action incidental to the foregoing as the Property Trustee may
                  from time to time determine is necessary or advisable to give
                  effect to the terms of this Trust Agreement and protect and
                  conserve the Trust Property for the benefit of the
                  Securityholders (without consideration of the effect of any
                  such action on any particular Securityholder);

                           (J)      registering transfers of the Trust
                  Securities in accordance with this Trust Agreement; and

                           (K)      except as otherwise provided in this Section
                  207(a)(ii), the Property Trustee shall have none of the
                  duties, liabilities, powers or the authority of the
                  Administrative Trustees set forth in Section 207(a)(i).

         (b)      So long as this Trust Agreement remains in effect, the Trust
(or the Trustees acting on behalf of the Trust) shall not undertake any
business, activities or transaction except as expressly provided herein or
contemplated hereby. In particular, the Trustees shall not (i) acquire any
investments or engage in any activities not authorized by this Trust Agreement;
(ii) sell, assign, transfer, exchange, mortgage, pledge, set-off or otherwise
dispose of any of the Trust Property or interests therein, including to
Securityholders, except as expressly provided herein; (iii) take any action that
would cause the Trust to fail or cease to qualify as a "grantor trust" for
United States federal income tax purposes; (iv) incur any indebtedness for
borrowed money or issue any other debt; or (v) take or consent to any action
that would result in the placement of a Lien on any of the Trust Property. The
Administrative Trustees shall defend all claims and demands of all Persons at
any time claiming any Lien on any of the Trust Property adverse to the interest
of the Trust or the Securityholders in their capacity as Securityholders.

         (c)      In connection with the issue and sale of the Preferred
Securities, the Depositor shall have the right and responsibility to assist the
Trust with respect to, or effect on behalf of the Trust, the following (and any
actions taken by the Depositor in furtherance of the following prior to the date
of this Trust Agreement are hereby ratified and confirmed in all respects):

                  (i)      the preparation and filing by the Trust with the
         Commission and the execution on behalf of the Trust of a registration
         statement on the appropriate form in

                                       14
<Page>

         relation to the Preferred Securities and the Debentures, including any
         amendments thereto;

                  (ii)     the determination of the states in which to take
         appropriate action to qualify or register for sale all or part of the
         Preferred Securities and to do any and all such acts, other than
         actions which must be taken by or on behalf of the Trust, and advise
         the Trustees of actions they must take on behalf of the Trust, and
         prepare for execution and filing any documents to be executed and filed
         by the Trust or on behalf of the Trust, as the Depositor deems
         necessary or advisable in order to comply with the applicable laws of
         any such states;

                  (iii)    the preparation for filing by the Trust and execution
         on behalf of the Trust of an application to the Nasdaq National Market
         or a national stock exchange or other organization for inclusion,
         listing or quotation upon notice of issuance of any Preferred
         Securities and to file or cause an Administrative Trustee to file
         thereafter with such exchange or organization such notifications and
         documents as may be necessary from time to time;

                  (iv)     the preparation for filing by the Trust with the
         Commission and the execution on behalf of the Trust of a registration
         statement on Form 8-A relating to the registration of the Preferred
         Securities under Section 12(b) or 12(g) of the Exchange Act, including
         any amendments thereto;

                  (v)      the negotiation of the terms of, and the execution
         and delivery of, the Underwriting Agreement providing for the sale of
         the Preferred Securities; and

                  (vi)     the taking of any other actions necessary or
         desirable to carry out any of the foregoing activities.

         (d)      Notwithstanding anything herein to the contrary, the
Administrative Trustees are authorized and directed to conduct the affairs of
the Trust and to operate the Trust so that the Trust shall not be deemed to be
an "investment company" required to be registered under the Investment Company
Act, shall be classified as a "grantor trust" and not as an association taxable
as a corporation for United States federal income tax purposes and so that the
Debentures shall be treated as indebtedness of the Depositor for United States
federal income tax purposes. In this connection, subject to Section 1002, the
Depositor and the Administrative Trustees are authorized to take any action and
the Administrative Trustees are authorized to direct the Property Trustee in
writing to take any action, not inconsistent with applicable law or this Trust
Agreement, that each of the Depositor and the Administrative Trustees determines
in their discretion to be necessary or desirable for such purposes. The Property
Trustee shall take any action so directed by one or more of the Administrative
Trustees.

                                       15
<Page>

         Section 208. Assets of Trust. The assets of the Trust shall consist of
the Trust Property.

         Section 209. Title to Trust Property. Legal title to all Trust Property
shall be vested at all times in the Property Trustee (in its capacity as such)
and shall be held and administered by the Property Trustee for the benefit of
the Securityholders in accordance with this Trust Agreement.

                                  ARTICLE III.

                                 PAYMENT ACCOUNT

         Section 301. Payment Account.

         (a)      On or prior to the Closing Date, the Property Trustee shall
establish the Payment Account. The Property Trustee and any agent of the
Property Trustee shall have exclusive control and sole right of withdrawal with
respect to the Payment Account for the purpose of making deposits and
withdrawals from the Payment Account in accordance with this Trust Agreement.
All monies and other property deposited or held from time to time in the Payment
Account shall be held by the Property Trustee in the Payment Account for the
exclusive benefit of the Securityholders and for distribution as herein
provided, including (and subject to) any priority of payments provided for
herein.

         (b)      The Property Trustee shall deposit in the Payment Account,
promptly upon receipt, all payments of principal of or interest on, and any
other payments or proceeds with respect to, the Debentures. Amounts held in the
Payment Account shall not be invested by the Property Trustee pending
distribution thereof.

                                   ARTICLE IV.

                            DISTRIBUTIONS; REDEMPTION

         Section 401. Distributions.

         (a)      Distributions on the Trust Securities shall be cumulative, and
shall accumulate whether or not there are funds of the Trust available for the
payment of Distributions. Distributions shall accumulate from the date of
issuance of the Trust Securities, and, except during any Extended Interest
Period with respect to the Debentures, shall be payable quarterly in arrears on
March 31, June 30, September 30 and December 31 of each year, commencing on
September 30, 2002. If any date on which a Distribution is otherwise payable on
the Trust Securities is not a Business Day, then the payment of such
Distribution shall be made on the next succeeding day that is a Business Day
(and without any interest or other payment in respect of any such delay) except
that if such Business Day is in the next succeeding calendar year, such payment
shall be made on the immediately preceding Business Day (and without any
reduction in interest or any other payment in respect of any such acceleration),
in each case with the same

                                       16
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force and effect as if made on such date (each date on which distributions are
payable in accordance with this Section 401(a), a "Distribution Date").

         (b)      The Trust Securities represent undivided beneficial interests
in the Trust Property. Distributions on the Trust Securities shall be payable at
a rate of 8.60% per annum of the Liquidation Amount of the Trust Securities. The
amount of Distributions payable for any full period shall be computed on the
basis of a 360-day year of twelve 30-day months. The amount of Distributions for
any partial period shall be computed on the basis of the number of days elapsed
in a 360-day year of twelve 30-day months. During any Extended Interest Period
with respect to the Debentures, Distributions on the Preferred Securities shall
be deferred for a period equal to the Extended Interest Period. The amount of
Distributions payable for any period shall include the Additional Amounts, if
any.

         (c)      Distributions on the Trust Securities shall be made by the
Property Trustee solely from the Payment Account and shall be payable on each
Distribution Date only to the extent that the Trust has funds then on hand and
immediately available by 12:30 p.m. on each Distribution Date in the Payment
Account for the payment of such Distributions.

         (d)      Distributions on the Trust Securities with respect to a
Distribution Date shall be payable to the Holders thereof as they appear on the
Securities Register for the Trust Securities on the relevant record date, which
shall be the 15th day of March, June, September or December for Distributions
payable on the last calendar day of the respective month; provided, however,
that for any Trust Securities held in global form, Distributions shall be
payable to the Holder thereof as of one Business Day immediately preceding the
Distribution Date.

         Section 402. Redemption.

         (a)      On each Debenture Redemption Date and at maturity of the
Debentures, the Trust shall be required to redeem a Like Amount of Trust
Securities at the Redemption Price.

         (b)      Notice of redemption shall be given by the Property Trustee by
first-class mail, postage prepaid, mailed not less than thirty (30) nor more
than sixty (60) days prior to the Redemption Date to each Holder of Trust
Securities to be redeemed, at such Holder's address appearing in the Securities
Register. The Property Trustee shall have no responsibility for the accuracy of
any CUSIP number contained in such notice. All notices of redemption shall
state:

                  (i)      the Redemption Date;

                  (ii)     the Redemption Price;

                  (iii)    the CUSIP number;

                  (iv)     if less than all the outstanding Trust Securities are
         to be redeemed, the identification and the aggregate Liquidation Amount
         of the particular Trust Securities to be redeemed;

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<Page>

                  (v)      that, on the Redemption Date, the Redemption Price
         shall become due and payable upon each such Trust Security to be
         redeemed and that Distributions thereon shall cease to accumulate on
         and after said date, except as provided in Section 402(d); and

                  (vi)     the place or places at which Trust Securities are to
         be surrendered for the payment of the Redemption Price.

         (c)      The Trust Securities redeemed on each Redemption Date shall be
redeemed at the Redemption Price with the proceeds from the contemporaneous
redemption of the Debentures. Redemptions of the Trust Securities shall be made
and the Redemption Price shall be payable on each Redemption Date only to the
extent that the Trust has immediately available funds then on hand and available
in the Payment Account for the payment of such Redemption Price.

         (d)      If the Trust gives a notice of redemption in respect of any
Preferred Securities, then, by 12:00 noon, New York City time, on the Redemption
Date, subject to Section 402(c), the Property Trustee, subject to Section
402(c), shall, with respect to Preferred Securities held in global form, deposit
with the Clearing Agency for such Preferred Securities, to the extent available
therefor, funds sufficient to pay the applicable Redemption Price and will give
such Clearing Agency irrevocable instructions and authority to pay the
Redemption Price to the Holders of the Preferred Securities. With respect to
Trust Securities that are not held in global form, the Property Trustee, subject
to Section 402(c), shall deposit with the Paying Agent funds sufficient to pay
the applicable Redemption Price and shall give the Paying Agent irrevocable
instructions and authority to pay the Redemption Price to the record holders
thereof upon surrender of their Preferred Securities Certificates.
Notwithstanding the foregoing, Distributions payable on or prior to the
Redemption Date for any Trust Securities called for redemption shall be payable
to the Holders of such Trust Securities as they appear on the Securities
Register for the Trust Securities on the relevant record dates for the related
Distribution Dates. If notice of redemption shall have been given and funds
deposited as required, then upon the date of such deposit, (i) all rights of
Securityholders holding Trust Securities so called for redemption shall cease,
except the right of such Securityholders to receive the Redemption Price, but
without interest, (ii) such Trust Securities shall cease to be Outstanding,
(iii) the Clearing Agency for the Preferred Securities or its nominee, as the
registered Holder of the Global Preferred Securities Certificate, shall receive
a registered global certificate or certificates representing the Debentures to
be delivered upon such distribution with respect to Preferred Securities held by
the Clearing Agency or its nominee, and (iv) any Trust Securities Certificates
not held by the Clearing Agency for the Preferred Securities or its nominee as
specified in clause (iii) above will be deemed to represent Debentures having a
principal amount equal to the stated Liquidation Amount of the Trust Securities
represented thereby and bearing accrued and unpaid interest in an amount equal
to the accumulated and unpaid Distributions on such Trust Securities until such
certificates are presented to the Securities Registrar for transfer or
reissuance. In the event that any date on which any Redemption Price is payable
is not a Business Day, then payment of the Redemption Price payable on such date
shall be made on the next succeeding day that is a Business Day (and without any
interest or other payment in respect of any such delay) except that, if such
Business Day is in the next succeeding calendar year, such payment shall be made
on the immediately preceding Business Day (and without any reduction of interest
or any other

                                       18
<Page>

payment in respect of any such acceleration), in each case with the same force
and effect as if made on such date. In the event that payment of the Redemption
Price in respect of any Trust Securities called for redemption is improperly
withheld or refused and not paid either by the Trust or by the Depositor
pursuant to the Guarantee, Distributions on such Trust Securities shall continue
to accumulate, at the then applicable rate, from the Redemption Date originally
established by the Trust for such Trust Securities to the date such Redemption
Price is actually paid, in which case the actual payment date shall be the date
fixed for redemption for purposes of calculating the Redemption Price.

         (e)      Payment of the Redemption Price on the Trust Securities shall
be made to the record holders thereof as they appear on the Securities Register
for the Trust Securities on the relevant record date, which shall be the date
fifteen (15) days prior to the relevant Redemption Date; provided, however, that
for any Trust Securities held in global form, the Redemption Price shall be
payable to the holder thereof as of one Business Day immediately preceding the
relevant Redemption Date.

         (f)      Subject to Section 403(a), if less than all the Outstanding
Trust Securities are to be redeemed on a Redemption Date, then the aggregate
Liquidation Amount of Trust Securities to be redeemed shall be allocated on a
pro rata basis (based on Liquidation Amounts) among the Common Securities and
the Preferred Securities. The particular Preferred Securities to be redeemed
shall be selected not more than sixty (60) days prior to the Redemption Date by
the Property Trustee from the Outstanding Preferred Securities not previously
called for redemption, by such method (including, without limitation, by lot) as
the Property Trustee shall deem fair and appropriate and which may provide for
the selection for redemption of portions (equal to such Liquidation Amount or an
integral multiple of such Liquidation Amount in excess thereof) of the
Liquidation Amount of the Preferred Securities of a denomination larger than
such Liquidation Amount. The Property Trustee shall promptly notify the
Securities Registrar in writing of the Preferred Securities selected for
redemption and, in the case of any Preferred Securities selected for partial
redemption, the Liquidation Amount thereof to be redeemed. For all purposes of
this Trust Agreement, unless the context otherwise requires, all provisions
relating to the redemption of the Preferred Securities shall relate, in the case
of any Preferred Securities redeemed or to be redeemed only in part, to the
portion of the Liquidation Amount of the Preferred Securities which has been or
is to be redeemed.

         Section 403. Subordination of the Common Securities.

         (a)      Payment of Distributions (including Additional Amounts, if
applicable) on, and the Redemption Price of, the Trust Securities, as
applicable, shall be made, subject to Section 402(f), pro rata among the Common
Securities and the Preferred Securities based on the Liquidation Amount of the
Trust Securities; provided, however, that if on any Distribution Date or
Redemption Date any Event of Default resulting from a Debenture Event of Default
shall have occurred and be continuing, no payment of any Distribution (including
Additional Amounts, if applicable) on, or Redemption Price of, any Common
Security, and no other payment on account of the redemption, liquidation or
other acquisition of the Common Securities, shall be made unless payment in full
in cash of all accumulated and unpaid Distributions (including Additional
Amounts, if applicable) on all Outstanding Preferred Securities for all
Distribution periods terminating on or prior thereto, or in the case of payment
of the Redemption Price the full amount of such Redemption Price on all
Outstanding Preferred Securities then called for redemption, shall have been
made or provided for, and all funds immediately available to the

                                       19
<Page>

Property Trustee shall first be applied to the payment in full in cash of all
Distributions (including Additional Amounts, if applicable) on, or the
Redemption Price of, the Preferred Securities then due and payable.

         (b)      In the case of the occurrence of any Event of Default
resulting from a Debenture Event of Default, the Holder of the Common Securities
shall be deemed to have waived any right to act with respect to any such Event
of Default under this Trust Agreement until the effect of all such Events of
Default with respect to the Preferred Securities shall have been cured, waived
or otherwise eliminated. Until any such Event of Default under this Trust
Agreement with respect to the Preferred Securities shall have been so cured,
waived or otherwise eliminated, the Property Trustee shall act solely on behalf
of the Holders of the Preferred Securities and not the Holder of the Common
Securities, and only the Holders of the Preferred Securities shall have the
right to direct the Property Trustee to act on their behalf.

         Section 404. Payment Procedures. Payments of Distributions (including
Additional Amounts, if applicable) in respect of the Preferred Securities shall
be made by check mailed to the address of the Person entitled thereto as such
address shall appear on the Securities Register or, if the Preferred Securities
are held by a Clearing Agency, such Distributions shall be made to the Clearing
Agency in immediately available funds, which will credit the relevant accounts
on the applicable Distribution Dates. Payments in respect of the Common
Securities shall be made in such manner as shall be mutually agreed between the
Property Trustee and the Common Securityholder.

         Section 405. Tax Returns and Reports. The Administrative Trustees shall
prepare (or cause to be prepared), at the Depositor's expense, and file all
United States federal, state and local tax and information returns and reports
required to be filed by or in respect of the Trust. In this regard, the
Administrative Trustees shall (a) prepare and file (or cause to be prepared and
filed) the appropriate Internal Revenue Service form required to be filed in
respect of the Trust in each taxable year of the Trust; and (b) prepare and
furnish (or cause to be prepared and furnished) to each Securityholder the
appropriate Internal Revenue Service forms required to be furnished to such
Securityholder or the information required to be provided on such forms. The
Administrative Trustees shall provide the Depositor with a copy of all such
returns and reports promptly after such filing or furnishing. The Property
Trustee shall comply with United States federal withholding and backup
withholding tax laws and information reporting requirements with respect to any
payments to the Securityholders under the Trust Securities.

         Section 406. Payment of Taxes, Duties, Etc. of the Trust. Upon receipt
under the Debentures of Additional Payments, the Property Trustee, at the
direction of an Administrative Trustee or the Depositor, shall promptly pay any
taxes, duties or governmental charges of whatsoever nature (other than
withholding taxes) imposed on the Trust by the United States or any other taxing
authority.

         Section 407. Payments under the Indenture. Any amount payable hereunder
to any Holder of Preferred Securities shall be reduced by the amount of any
corresponding payment such Holder has directly received under the Indenture
pursuant to Section 513(b) or (c) hereof.

                                       20
<Page>

                                   ARTICLE V.
                        THE TRUST SECURITIES CERTIFICATES

         Section 501. Initial Ownership. Upon the creation of the Trust and the
contribution by the Depositor pursuant to Section 203 and until the issuance of
the Trust Securities, and at any time during which no Trust Securities are
Outstanding, the Depositor shall be the sole beneficial owner of the Trust.

         Section 502. The Trust Securities Certificates. The Preferred
Securities Certificates shall be issued in minimum denominations of the
Liquidation Amount and integral multiples of such Liquidation Amount in excess
thereof, and the Common Securities Certificates shall be issued in denominations
of the Liquidation Amount and integral multiples thereof. The Trust Securities
Certificates shall be executed on behalf of the Trust by manual or facsimile
signature of at least one Administrative Trustee. The Trust Securities
Certificates bearing the manual or facsimile signatures of individuals who were,
at the time when such signatures shall have been affixed, authorized to sign on
behalf of the Trust, shall be validly issued and entitled to the benefits of
this Trust Agreement, notwithstanding that such individuals or any of them shall
have ceased to be so authorized prior to the delivery of such Trust Securities
Certificates or did not hold such offices at the date of delivery of such Trust
Securities Certificates. A transferee of a Trust Securities Certificate shall
become a Securityholder, and shall be entitled to the rights and subject to the
obligations of a Securityholder hereunder, upon due registration of such Trust
Securities Certificate in such transferee's name pursuant to Sections 504, 511
and 513.

         Section 503. Execution, Authentication and Delivery of the Trust
Securities Certificates.

         (a)      On the Closing Date and, if applicable, the Option Closing
Date, as such term is defined in the Underwriting Agreement, the Administrative
Trustees shall cause Trust Securities Certificates, in an aggregate Liquidation
Amount as provided in Sections 204 and 205, to be executed on behalf of the
Trust by the manual or facsimile signature of at least one of the Administrative
Trustees and delivered to or upon the written order of the Depositor, signed by
its Chief Executive Officer, President, any Senior or Executive Vice President,
the Treasurer or any Assistant Treasurer without further corporate action by the
Depositor, in authorized denominations.

         (b)      A Preferred Securities Certificate shall not be valid until
authenticated by the manual signature of an authorized signatory of the Property
Trustee in substantially the form of Exhibit E hereto. The signature shall be
conclusive evidence that the Preferred Securities Certificate has been
authenticated under this Trust Agreement. Each Preferred Security Certificate
shall be dated the date of its authentication.

         (c)      Upon the written order of the Trust signed by one of the
Administrative Trustees, the Property Trustee shall authenticate and make
available for delivery the Preferred Securities Certificates.

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<Page>

         (d)      The Property Trustee may appoint an Authenticating Agent
acceptable to the Trust to authenticate the Preferred Securities. An
Authenticating Agent may authenticate the Preferred Securities whenever the
Property Trustee may do so. Each reference in this Trust Agreement to
authentication by the Property Trustee includes authentication by such agent. An
Authenticating Agent has the same rights as the Property Trustee to deal with
the Depositor or the Trust.

         Section 503A. Global Preferred Security.

         (a)      Any Global Preferred Security issued under this Trust
Agreement shall be registered in the name of the nominee of the Clearing Agency
and delivered to such custodian therefor, and such Global Preferred Security
shall constitute a single Preferred Security for all purposes of this Trust
Agreement.

         (b)      Notwithstanding any other provision in this Trust Agreement,
no Global Preferred Security may be exchanged for Preferred Securities
registered in the names of persons other than the Depositary or its nominee
unless (i) the Depositary notifies the Administrative Trustees and Property
Trustee in writing that it is unwilling or unable to continue as a depositary
for such Global Preferred Securities and the Depositor is unable to locate a
qualified successor depositary, (ii) the Depositor executes and delivers to the
Administrative Trustees and Property Trustee a written order stating that it
elects to terminate the book-entry system through the Depositary or (iii) there
shall have occurred and be continuing a Debenture Event of Default.

         (c)      If a Preferred Security is to be exchanged in whole or in part
for a beneficial interest in a Global Preferred Security, then either (i) such
Global Preferred Security shall be so surrendered for exchange or cancellation
as provided in this Article V or (ii) the Liquidation Amount thereof shall be
reduced or increased by an amount equal to the portion thereof to be so
exchanged or cancelled, or equal to the Liquidation Amount of such other
Preferred Securities 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 Securities Registrar, whereupon the Property Trustee, in accordance with the
rules and procedures of the Depositary for such Global Preferred Security (the
"Applicable Procedures"), shall instruct the Clearing Agency or its authorized
representative to make a corresponding adjustment to its records. Upon any such
surrender or adjustment of a Global Preferred Security by the Clearing Agency,
accompanied by registration instructions, the Administrative Trustees shall
execute and the Property Trustee shall, subject to Section 504(b) and as
otherwise provided in this Article V, authenticate and deliver any Preferred
Securities issuable in exchange for such Global Preferred Security (or any
portion thereof) in accordance with the instructions of the Clearing Agency. The
Property 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 Preferred Security executed, authenticated and delivered
upon registration of transfer of, or in exchange for or in lieu of, a Global
Preferred Security or any portion thereof, whether pursuant to this Article V or
otherwise, shall be executed, authenticated and delivered in the form of, and
shall be, a Global Preferred Security, unless such Global Preferred Security is

                                       22
<Page>

registered in the name of a Person other than the Clearing Agency for such
Global Preferred Security or a nominee thereof.

         (e)      The Clearing Agency or its nominee, as the registered owner of
a Global Preferred Security, shall be considered the Holder of the Preferred
Securities represented by such Global Preferred Security for all purposes under
this Trust Agreement and the Preferred Securities, and owners of beneficial
interests in such Global Preferred Security shall hold such interests pursuant
to the Applicable Procedures and, except as otherwise provided herein, shall not
be entitled to receive physical delivery of any such Preferred Securities in
definitive form and shall not be considered the Holders thereof under this Trust
Agreement. Accordingly, any such owner's beneficial interest in the Global
Preferred Securities shall be shown only on, and the transfer of such interest
shall be effected only through, records maintained by the Clearing Agency or its
nominee. Neither the Property Trustee, the Securities Registrar nor the
Depositor shall have any liability in respect of any transfers effected by the
Clearing Agency.

         (f)      The rights of owners of beneficial interests in a Global
Preferred Security shall be exercised only through the Clearing Agency and shall
be limited to those established by law and agreements between such owners and
the Clearing Agency.

         Section 504. Registration of Transfer and Exchange of the Preferred
Securities Certificates.

         (a)      The Depositor shall keep or cause to be kept, at the office or
agency maintained pursuant to Section 508, a register or registers for the
purpose of registering the Trust Securities Certificates and, subject to the
provisions of Section 503A, transfers and exchanges of the Preferred Securities
Certificates (herein referred to as the "Securities Register") in which the
registrar designated by the Depositor (the "Securities Registrar"), subject to
such reasonable regulations as it may prescribe, shall provide for the
registration of the Preferred Securities Certificates and the Common Securities
Certificates (subject to Section 510 in the case of the Common Securities
Certificates) and registration of transfers and exchanges of the Preferred
Securities Certificates as herein provided. The Property Trustee shall be the
initial Securities Registrar.

         (b)      Subject to the provisions of Section 503A, upon surrender for
registration of transfer of any Preferred Securities Certificate at the office
or agency maintained pursuant to Section 508, the Administrative Trustees or any
one of them shall execute and deliver, in the name of the designated transferee
or transferees, one or more new Preferred Securities Certificates in authorized
denominations of a like aggregate Liquidation Amount dated the date of execution
by the manual or facsimile signature of such Administrative Trustee or Trustees.
The Securities Registrar shall not be required to register the transfer of any
of the Preferred Securities that have been called for redemption. At the option
of a Holder, the Preferred Securities Certificates may be exchanged for other
Preferred Securities Certificates in authorized denominations of the same class
and of a like aggregate Liquidation Amount upon surrender of the Preferred
Securities Certificates to be exchanged at the office or agency maintained
pursuant to Section 508.

                                       23
<Page>

         (c)      Every Preferred Securities Certificate presented or
surrendered for registration of transfer or exchange, subject to the provisions
of Section 503A, shall be accompanied by a written instrument of transfer in
form satisfactory to the Property Trustee and the Securities Registrar duly
executed by the Holder or his attorney duly authorized in writing. Each
Preferred Securities Certificate surrendered for registration of transfer or
exchange shall be canceled and subsequently disposed of by the Property Trustee
in accordance with its customary practice. The Trust shall not be required to
(i) issue, register the transfer of, or exchange any of the Preferred Securities
during a period beginning at the opening of business 15 calendar days before the
date of mailing of a notice of redemption of any of the Preferred Securities
called for redemption and ending at the close of business on the day of such
mailing; or (ii) register the transfer of or exchange any of the Preferred
Securities so selected for redemption, in whole or in part, except the
unredeemed portion of any such Preferred Securities being redeemed in part.

         (d)      No service charge shall be made for any registration of
transfer or exchange of Preferred Securities Certificates, subject to the
provisions of Section 503A, but the Securities Registrar may require payment of
a sum sufficient to cover any tax or governmental charge that may be imposed in
connection with any transfer or exchange of the Preferred Securities
Certificates.

         (e)      Preferred Securities may only be transferred, in whole or in
part, in accordance with the terms and conditions set forth in this Trust
Agreement. Any transfer or purported transfer of any Preferred Security not made
in accordance with this Trust Agreement shall be null and void. A Preferred
Security that is not a Global Preferred Security may be transferred, in whole or
in part, to a Person who takes delivery in the form of another Preferred
Security that is not a Global Preferred Security as provided in Section 504(a).
A beneficial interest in a Global Preferred Security may be exchanged for a
Preferred Security that is not a Global Preferred Security only as provided in
Section 503A.

         Section 505. Mutilated, Destroyed, Lost or Stolen Trust Securities
Certificates. If (a) any mutilated Trust Securities Certificate shall be
surrendered to the Securities Registrar, or if the Securities Registrar shall
receive evidence to its satisfaction of the destruction, loss or theft of any
Trust Securities Certificate; and (b) there shall be delivered to the Securities
Registrar, the Property Trustee and the Administrative Trustees such security or
indemnity as may be required by them to save each of them harmless, then in the
absence of notice that such Trust Securities Certificate shall have been
acquired by a bona fide purchaser, the Administrative Trustees, or any one of
them, on behalf of the Trust shall execute and make available for delivery, in
exchange for or in lieu of any such mutilated, destroyed, lost or stolen Trust
Securities Certificate, a new Trust Securities Certificate of like class, tenor
and denomination. In connection with the issuance of any new Trust Securities
Certificate under this Section 505, the Administrative Trustees or the
Securities Registrar may require the payment of a sum sufficient to cover any
tax or other governmental charge that may be imposed in connection therewith.
Any duplicate Trust Securities Certificate issued pursuant to this Section 505
shall constitute conclusive evidence of an undivided beneficial interest in the
assets of the Trust, as if originally issued, whether or not the lost, stolen or
destroyed Trust Securities Certificate shall be found at any time.

                                       24
<Page>

         Section 506. Persons Deemed the Securityholders. The Trustees, the
Paying Agent and the Securities Registrar shall treat the Person in whose name
any Trust Securities Certificate shall be registered in the Securities Register
as the owner of such Trust Securities Certificate for the purpose of receiving
Distributions and for all other purposes whatsoever, and neither the Trustees
nor the Securities Registrar shall be bound by any notice to the contrary.

         Section 507. Access to List of the Securityholders' Names and
Addresses. At any time when the Property Trustee is not also acting as the
Securities Registrar, the Administrative Trustees or the Depositor shall furnish
or cause to be furnished to the Property Trustee (a) within five Business Days
of March 15, June 15, September 15 and December 15 in each year, a list, in such
form as the Property Trustee may reasonably require, of the names and addresses
of the Securityholders as of the most recent record date; and (b) promptly after
receipt by any Administrative Trustee or the Depositor of a request therefor
from the Property Trustee in order to enable the Property Trustee to discharge
its obligations under this Trust Agreement, in each case to the extent such
information is in the possession or control of the Administrative Trustees or
the Depositor and is not identical to a previously supplied list or has not
otherwise been received by the Property Trustee in its capacity as Securities
Registrar. The rights of the Securityholders to communicate with other
Securityholders with respect to their rights under this Trust Agreement or under
the Trust Securities, and the corresponding rights of the Trustee shall be as
provided in the Trust Indenture Act. Each Holder, by receiving and holding a
Trust Securities Certificate, and each owner shall be deemed to have agreed not
to hold the Depositor, the Property Trustee or the Administrative Trustees
accountable by reason of the disclosure of its name and address, regardless of
the source from which such information was derived.

         Section 508. Maintenance of Office or Agency. The Administrative
Trustees shall maintain in a location or locations designated by the
Administrative Trustees, an office or offices or agency or agencies where the
Preferred Securities Certificates may be surrendered for registration of
transfer or exchange and where notices and demands to or upon the Trustees in
respect of the Trust Securities Certificates may be served. The Administrative
Trustees initially designate the Corporate Trust Office of the Property Trustee,
Wilmington Trust Company, as the principal corporate trust office for such
purposes. The Administrative Trustees shall give prompt written notice to the
Depositor and to the Securityholders of any change in the location of the
Securities Register or any such office or agency.

         Section 509. Appointment of the Paying Agent. The Paying Agent shall
initially be the Property Trustee, and any co-paying agent chosen by the
Property Trustee must be acceptable to the Administrative Trustees and the
Depositor. The Paying Agent shall make Distributions to the Securityholders from
the Payment Account and shall report the amounts of such Distributions to the
Property Trustee and the Administrative Trustees. Any Paying Agent shall have
the revocable power to withdraw funds from the Payment Account for the purpose
of making the Distributions referred to above. The Administrative Trustees may
revoke such power and remove the Paying Agent if such Trustees determine in
their sole discretion that the Paying Agent shall have failed to perform its
obligations under this Trust Agreement in any material respect. Any Person
acting as Paying Agent shall be permitted to resign as Paying Agent upon thirty
(30) days' written notice to the Administrative Trustees, the Property Trustee
and the Depositor. In the event that the Property Trustee shall no longer be the
Paying Agent or a successor Paying Agent shall

                                       25
<Page>

resign or its authority to act be revoked, the Administrative Trustees shall
appoint a successor (which shall be a bank or trust company) that is acceptable
to the Property Trustee and the Depositor to act as the Paying Agent. The
Administrative Trustees shall cause such successor Paying Agent or any
additional Paying Agent appointed by the Administrative Trustees to execute and
deliver to the Trustees an instrument in which such successor Paying Agent or
additional Paying Agent shall agree with the Trustees that as Paying Agent, such
successor Paying Agent or additional Paying Agent shall hold all sums, if any,
held by it for payment to the Securityholders in trust for the benefit of the
Securityholders entitled thereto until such sums shall be paid to such
Securityholders. The Paying Agent shall return all unclaimed funds to the
Property Trustee and, upon removal of a Paying Agent, such Paying Agent shall
also return all funds in its possession to the Property Trustee. The provisions
of Sections 801, 803 and 806 shall apply to the Property Trustee also in its
role as the Paying Agent, for so long as the Property Trustee shall act as
Paying Agent and, to the extent applicable, to any other Paying Agent appointed
hereunder. Any reference in this Trust Agreement to the Paying Agent shall
include any co-paying agent unless the context requires otherwise.

         Section 510. Ownership of the Common Securities by the Depositor. On
the Closing Date, the Depositor shall acquire and retain beneficial and record
ownership of the Common Securities. To the fullest extent permitted by law, any
attempted transfer of the Common Securities (other than a transfer in connection
with a merger or consolidation of the Depositor into another corporation
pursuant to Section 12.1 of the Indenture) shall be void. The Administrative
Trustees shall cause each Common Securities Certificate issued to the Depositor
to contain a legend stating "THIS CERTIFICATE IS NOT TRANSFERABLE".

         Section 511. The Trust Securities Certificates.

         (a)      Each owner shall receive a Preferred Securities Certificate
representing such owner's interest in such Preferred Securities. Upon the
issuance of the Preferred Securities Certificates, the Trustees shall recognize
the record holders of the Preferred Securities Certificates as the
Securityholders. The Preferred Securities Certificates shall be issued in the
form of one or more fully registered Global Preferred Securities Certificates
which will be deposited with or on behalf of the Clearing Agency and registered
in the name of the Clearing Agency's nominee. Unless and until it is
exchangeable in whole or in part for the Preferred Securities in definitive
form, a global security may not be transferred except as a whole by the Clearing
Agency to a nominee of the Clearing Agency or by a nominee of the Clearing
Agency to the Clearing Agency or another nominee of the Clearing Agency or by
the Clearing Agency or any such nominee to a successor of such Clearing Agency
or a nominee of such successor.

         (b)      A single Common Securities Certificate representing the Common
Securities shall be issued to the Depositor in the form of a definitive Common
Securities Certificate.

         Section 512. Notices. To the extent that a notice or other
communication to the Holders is required under this Trust Agreement, for so long
as Preferred Securities are represented by a Global Preferred Securities
Certificate, the Trustees shall give all such notices and communications
specified herein to be given to the Clearing Agency, and shall have no

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obligation to provide notice to the owners of the beneficial interest in the
Global Preferred Securities.

         Section 513. Rights of the Securityholders.

         (a)      The legal title to the Trust Property is vested exclusively in
the Property Trustee (in its capacity as such) in accordance with Section 209,
and the Securityholders shall not have any right or title therein other than the
undivided beneficial interest in the assets of the Trust conferred by their
Trust Securities and they shall have no right to call for any partition or
division of property, profits or rights of the Trust except as described below.
The Trust Securities shall be personal property giving only the rights
specifically set forth therein and in this Trust Agreement. The Trust Securities
shall have no preemptive or similar rights. When issued and delivered to Holders
of the Preferred Securities against payment of the purchase price therefor, the
Preferred Securities shall be fully paid and nonassessable interests in the
Trust. The Holders of the Preferred Securities, in their capacities as such,
shall be entitled to the same limitation of personal liability extended to
stockholders of private corporations for profit organized under the General
Corporation Law of the State of Delaware.

         (b)      For so long as any of the Preferred Securities remain
Outstanding, if, upon a Debenture Event of Default, the Debenture Trustee fails
or the holders of not less than twenty-five percent (25%) in principal amount of
the outstanding Debentures fail to declare the principal of all of the
Debentures to be immediately due and payable, the Holders of at least
twenty-five percent (25%) in Liquidation Amount of the Preferred Securities then
Outstanding shall have such right by a notice in writing to the Depositor and
the Debenture Trustee; and upon any such declaration such principal amount of
and the accrued interest on all of the Debentures shall become immediately due
and payable, provided that the payment of principal and interest on such
Debentures shall remain subordinated to the extent provided in the Indenture.

         (c)      For so long as any of the Preferred Securities remain
Outstanding, upon a Debenture Event of Default arising from the failure to pay
interest or principal on the Debentures, the Holders of any of the Preferred
Securities then Outstanding shall, to the fullest extent permitted by law, have
the right to directly institute proceedings for enforcement of payment to such
Holders of principal of or interest on the Debentures having a principal amount
equal to the Liquidation Amount of the Preferred Securities of such Holders.

                                   ARTICLE VI.

                  ACTS OF THE SECURITYHOLDERS; MEETINGS; VOTING

         Section 601. Limitations on Voting Rights.

         (a)      Except as provided in this Section 601, in Sections 513, 810
and 1002 and in the Indenture and as otherwise set forth in the Guarantee or
required by law, no record Holder of Preferred Securities shall have any right
to vote or in any manner otherwise control the administration, operation and
management of the Trust or the obligations of the parties hereto;

                                       27
<Page>

nor shall anything herein set forth, or contained in the terms of the Trust
Securities Certificates, be construed so as to constitute the Securityholders
from time to time as partners or members of an association.

         (b)      So long as any Debentures are held by the Property Trustee, on
behalf of the Trust, the Trustees shall not (i) direct the time, method and
place of conducting any proceeding for any remedy available to the Debenture
Trustee, or executing any trust or power conferred on the Debenture Trustee with
respect to such Debentures; (ii) waive any past default which is waivable under
Article VII of the Indenture; (iii) exercise any right to rescind or annul a
declaration that the principal of all the Debentures shall be due and payable;
or (iv) consent to any amendment, modification or termination of the Indenture
or the Debentures, where such consent shall be required, without, in each case,
obtaining the prior approval of the Holders of at least a majority in
Liquidation Amount of all the Outstanding Preferred Securities; provided,
however, that where a consent under the Indenture would require the consent of
each holder of outstanding Debentures affected thereby, no such consent shall be
given by the Property Trustee without the prior written consent of each holder
of the Preferred Securities. The Trustees shall not revoke any action previously
authorized or approved by a vote of the Holders of the Outstanding Preferred
Securities, except when authorized by a subsequent vote of the Holders of the
Outstanding Preferred Securities. The Property Trustee shall notify each holder
of the Outstanding Preferred Securities of any notice of default received from
the Debenture Trustee with respect to the Debentures. In addition to obtaining
the foregoing approvals of the Holders of the Preferred Securities, prior to
taking any of the foregoing actions, the Trustees shall, at the expense of the
Depositor, obtain an Opinion of Counsel experienced in such matters to the
effect that the Trust shall continue to be classified as a grantor trust and not
as an association taxable as a corporation for United States federal income tax
purposes on account of such action.

         (c)      If any proposed amendment to the Trust Agreement provides for,
or the Trustees otherwise propose to effect, (i) any action that would adversely
affect in any material respect the powers, preferences or special rights of the
holders of the Preferred Securities, whether by way of amendment to the Trust
Agreement or otherwise; or (ii) the dissolution, winding-up or termination of
the Trust, other than pursuant to the terms of this Trust Agreement, then the
Holders of the Outstanding Preferred Securities as a class shall be entitled to
vote on such amendment or proposal and such amendment or proposal shall not be
effective except with the approval of the Holders of at least a Majority in
Liquidation Amount of the Outstanding Preferred Securities. No amendment to this
Trust Agreement may be made if, as a result of such amendment, the Trust would
cease to be classified as a grantor trust or would be classified as an
association taxable as a corporation for United States federal income tax
purposes.

         Section 602. Notice of Meetings. Notice of all meetings of the
Preferred Securityholders, stating the time, place and purpose of the meeting,
shall be given by the Property Trustee pursuant to Section 1008 to each
Preferred Securityholder of record, at his or her registered address, at least
fifteen (15) days and not more than ninety (90) days before the meeting. At any
such meeting, any business properly before the meeting may be so considered
whether or not stated in the notice of the meeting. Any adjourned meeting may be
held as adjourned without further notice.

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<Page>

         Section 603. Meetings of the Preferred Securityholders.

         (a)      No annual meeting of the Securityholders is required to be
held. The Administrative Trustees, however, shall call a meeting of the
Securityholders to vote on any matter in respect of which the Preferred
Securityholders are entitled to vote upon the written request of the Preferred
Securityholders of twenty-five percent (25%) of the Outstanding Preferred
Securities (based upon their aggregate Liquidation Amount) and the
Administrative Trustees or the Property Trustee may, at any time in their
discretion, call a meeting of the Preferred Securityholders to vote on any
matters as to which the Preferred Securityholders are entitled to vote.

         (b)      The Preferred Securityholders of record of fifty percent (50%)
of the Outstanding Preferred Securities (based upon their aggregate Liquidation
Amount), present in person or by proxy, shall constitute a quorum at any meeting
of the Securityholders.

         (c)      If a quorum is present at a meeting, an affirmative vote by
the Preferred Securityholders of record present, in person or by proxy, holding
more than a majority of the Preferred Securities (based upon their aggregate
Liquidation Amount) held by the Preferred Securityholders of record present,
either in person or by proxy, at such meeting shall constitute the action of the
Securityholders, unless this Trust Agreement requires a greater number of
affirmative votes.

         Section 604. Voting Rights. The Securityholders shall be entitled to
one vote for each dollar value of Liquidation Amount represented by their Trust
Securities (with any fractional multiple thereof rounded up or down as the case
may be to the closest integral multiple) in respect of any matter as to which
such Securityholders are entitled to vote (and such dollar value shall be $25
per Preferred Security until such time, if any, as the Liquidation Amount is
changed as provided herein).

         Section 605. Proxies, Etc. At any meeting of the Securityholders, any
Securityholder entitled to vote thereat may vote by proxy, provided that no
proxy, shall be voted at any meeting unless it shall have been placed on file
with the Administrative Trustees, or with such other officer or agent of the
Trust as the Administrative Trustees may direct, for verification prior to the
time at which such vote shall be taken. Only Holders shall be entitled to vote.
When Trust Securities are held jointly by several persons, any one of them may
vote at any meeting in person or by proxy in respect of such Trust Securities,
but if more than one of them shall be present at such meeting in person or by
proxy, and such joint owners or their proxies so present disagree as to any vote
to be cast, such vote shall not be received in respect of such Trust Securities.
A proxy purporting to be executed by or on behalf of a Securityholder shall be
deemed valid unless challenged at or prior to its exercise, and, the burden of
proving invalidity shall rest on the challenger. No proxy shall be valid more
than three years after its date of execution.

         Section 606. Securityholder Action by Written Consent. Any action which
may be taken by the Securityholders at a meeting may be taken without a meeting
if the Securityholders holding more than a majority of all of the Outstanding
Trust Securities (based upon their aggregate Liquidation Amount) entitled to
vote in respect of such action (or such larger

                                       29
<Page>

proportion thereof as shall be required by any express provision of this Trust
Agreement) shall consent to the action in writing.

         Section 607. Record Date for Voting and Other Purposes. For the
purposes of determining the Securityholders who are entitled to notice of and to
vote at any meeting or by written consent, or to participate in any Distribution
on the Trust Securities in respect of which a record date is not otherwise
provided for in this Trust Agreement, or for the purpose of any other action,
the Administrative Trustees or the Property Trustee may from time to time fix a
date, not more than 90 days prior to the date of any meeting of the
Securityholders or the payment of Distribution or other action, as the case may
be, as a record date for the determination of the identity of the
Securityholders of record for such purposes.

         Section 608. Acts of the Securityholders.

         (a)      Any request, demand, authorization, direction, notice,
consent, waiver or other action provided or permitted by this Trust Agreement to
be given, made or taken by the Securityholders may be embodied in and evidenced
by one or more instruments of substantially similar tenor signed by such
Securityholders in person or by an agent duly appointed in writing; and, except
as otherwise expressly provided herein, such action shall become effective when
such instrument or instruments are delivered to an Administrative Trustee. Such
instrument or instruments (and the action embodied therein and evidenced
thereby) are herein sometimes referred to as the "Act" of the Securityholders
signing such instrument or instruments. Proof of execution of any such
instrument or of a writing appointing any such agent shall be sufficient for any
purpose of this Trust Agreement and (subject to Section 801) conclusive in favor
of the Trustees, if made in the manner provided in this Section 608.

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

         (c)      The ownership of the Preferred Securities shall be proved by
the Securities Register.

         (d)      Any request, demand, authorization, direction, notice,
consent, waiver or other Act of the Securityholder of any Trust Security shall
bind every future Securityholder of the same Trust Security and the
Securityholder of every Trust Security issued upon the registration of transfer
thereof or in exchange therefor or in lieu thereof in respect of anything done,
omitted or suffered to be done by the Trustees or the Trust in reliance thereon,
whether or not notation of such action is made upon such Trust Security.

                                       30
<Page>

         (e)      Without limiting the foregoing, a Securityholder entitled
hereunder to take any action hereunder with regard to any particular Trust
Security may do so with regard to all or any part of the Liquidation Amount of
such Trust Security or by one or more duly appointed agents each of which may do
so pursuant to such appointment with regard to all or any part of such
Liquidation Amount.

         (f)      A Securityholder may institute a legal proceeding directly
against the Depositor under the Guarantee to enforce its rights under the
Guarantee without first instituting a legal proceeding against the Guarantee
Trustee (as defined in the Guarantee), the Trust or any Person.

         Section 609. Inspection of Records. Upon reasonable notice to the
Administrative Trustees and the Property Trustee, the records of the Trust shall
be open to inspection at the principal executive office of the Trustee (as
indicated in Section 202) to Holders of the Trust Securities during normal
business hours for any purpose reasonably related to such Securityholder's
interest as a Securityholder.

                                  ARTICLE VII.

                         REPRESENTATIONS AND WARRANTIES

         Section 701. Representations and Warranties of the Bank and the
Property Trustee. The Bank and the Property Trustee, each severally on behalf of
and as to itself, as of the date hereof, and each successor Property Trustee at
the time of the successor Property Trustee's acceptance of its appointment as
Property Trustee hereunder (in the case of a successor Property Trustee, the
term "Bank" as used herein shall be deemed to refer to such successor Property
Trustee in its separate corporate capacity) hereby represents and warrants (as
applicable) for the benefit of the Depositor and the Securityholders that:

         (a)      the Bank is a Delaware banking corporation duly organized,
validly existing and in good standing under the laws of its jurisdiction of
incorporation;

         (b)      the Bank has full corporate power, authority and legal right
to execute, deliver and perform its obligations under this Trust Agreement and
has taken all necessary action to authorize the execution, delivery and
performance by it of this Trust Agreement;

         (c)      this Trust Agreement has been duly authorized, executed and
delivered by the Property Trustee and constitutes the valid and legally binding
agreement of the Property Trustee enforceable against it in accordance with its
terms, subject to bankruptcy, insolvency, fraudulent transfer, reorganization,
moratorium and similar laws of general applicability relating to or affecting
creditors' rights and to general equity principles;

         (d)      the execution, delivery and performance by the Property
Trustee of this Trust Agreement has been duly authorized by all necessary
corporate or other action on the part of the Property Trustee and does not
require any approval of stockholders of the Bank and such execution, delivery
and performance shall not (i) violate the Bank's charter or by-laws; (ii)
violate any provision of, or constitute, with or without notice or lapse of
time, a default under, or

                                       31
<Page>

result in the creation or imposition of, any Lien on any properties included in
the Trust Property pursuant to the provisions of, any indenture, mortgage,
credit agreement, license or other agreement or instrument to which the Property
Trustee or the Bank is a party or by which it is bound; or (iii) violate any
law, governmental rule or regulation of the United States or its jurisdiction of
incorporation, as the case may be, governing the banking or trust powers of the
Bank or the Property Trustee (as appropriate in context) or any order, judgment
or decree applicable to the Property Trustee or the Bank;

         (e)      neither the authorization, execution or delivery by the
Property Trustee of this Trust Agreement nor the consummation of any of the
transactions by the Property Trustee contemplated herein requires the consent or
approval of, the giving of notice to, the registration with or the taking of any
other action with respect to any governmental authority or agency under any
existing federal law governing the banking or trust powers of the Bank or the
Property Trustee, as the case may be, under the laws of the United States or its
jurisdiction of incorporation; and

         (f)      there are no proceedings pending or, to the best of the
Property Trustee's knowledge, threatened against or affecting the Bank or the
Property Trustee in any court or before any governmental authority, agency or
arbitration board or tribunal which, individually or in the aggregate, would
materially and adversely affect the Trust or would question the right, power and
authority of the Property Trustee to enter into or perform its obligations as
one of the Trustees under this Trust Agreement; and

         (g)      the Property Trustee is a Person eligible pursuant to the
Trust Indenture Act to act as such and has a combined capital and surplus of at
least $50,000,000.

         Section 702. Representations and Warranties of the Delaware Bank and
the Delaware Trustee. The Delaware Bank and the Delaware Trustee, each severally
on behalf of and as to itself, as of the date hereof, and each successor
Delaware Trustee at the time of the successor Delaware Trustee's acceptance of
appointment as Delaware Trustee hereunder (the term "Delaware Bank" being used
to refer to such successor Delaware Trustee in its separate corporate capacity),
hereby represents and warrants (as applicable) for the benefit of the Depositor
and the Securityholders that:

         (a)      the Delaware Bank is a Delaware banking corporation duly
organized, validly existing and in good standing under the laws of the State of
Delaware;

         (b)      the Delaware Bank has full corporate power, authority and
legal right to execute, deliver and perform its obligations under this Trust
Agreement and has taken all necessary action to authorize the execution,
delivery and performance by it of this Trust Agreement;

         (c)      this Trust Agreement has been duly authorized, executed and
delivered by the Delaware Trustee and constitutes the valid and legally binding
agreement of the Delaware Trustee enforceable against it in accordance with its
terms, subject to bankruptcy, insolvency, fraudulent transfer, reorganization,
moratorium and similar laws of general applicability relating to or affecting
creditors, rights and to general equity principles;

                                       32
<Page>

         (d)      the execution, delivery and performance by the Delaware
Trustee of this Trust Agreement has been duly authorized by all necessary
corporate or other action on the part of the Delaware Trustee and does not
require any approval of stockholders of the Delaware Bank and such execution,
delivery and performance shall not (i) violate the Delaware Bank's charter or
by-laws; (ii) violate any provision of, or constitute, with or without notice or
lapse of time, a default under, or result in the creation or imposition of, any
Lien on any properties included in the Trust Property pursuant to the provisions
of, any indenture, mortgage, credit agreement, license or other agreement or
instrument to which the Delaware Bank or the Delaware Trustee is a party or by
which it is bound; or (iii) violate any law, governmental rule or regulation of
the United States or the State of Delaware, as the case may be, governing the
banking or trust powers of the Delaware Bank or the Delaware Trustee (as
appropriate in context) or any order, judgment or decree applicable to the
Delaware Bank or the Delaware Trustee;

         (e)      neither the authorization, execution or delivery by the
Delaware Trustee of this Trust Agreement nor the consummation of any of the
transactions by the Delaware Trustee contemplated herein or therein requires the
consent or approval of, the giving of notice to, the registration with or the
taking of any other action with respect to any governmental authority or agency
under any existing federal law governing the banking or trust powers of the
Delaware Bank or the Delaware Trustee, as the case may be, under the laws of the
United States or the State of Delaware; and

         (f)      there are no proceedings pending or, to the best of the
Delaware Trustee's knowledge, threatened against or affecting the Delaware Bank
or the Delaware Trustee in any court or before any governmental authority,
agency or arbitration board or tribunal which, individually or in the aggregate,
would materially and adversely affect the Trust or would question the right,
power and authority of the Delaware Trustee to enter into or perform its
obligations as one of the Trustees under this Trust Agreement.

         Section 703. Representations and Warranties of the Depositor. The
Depositor hereby represents and warrants for the benefit of the Securityholders
that:

         (a)      the Trust Securities Certificates issued on the Closing Date
or the Option Closing Date, if applicable, on behalf of the Trust have been duly
authorized and, shall have been duly and validly executed, issued and delivered
by the Administrative Trustees pursuant to the terms and provisions of, and in
accordance with the requirements of, this Trust Agreement and the
Securityholders shall be, as of such date, entitled to the benefits of this
Trust Agreement; and

         (b)      there are no taxes, fees or other governmental charges payable
by the Trust (or the Trustees on behalf of the Trust) under the laws of the
State of Delaware or any political subdivision thereof in connection with the
execution, delivery and performance by the Bank, the Property Trustee or the
Delaware Trustee, as the case may be, of this Trust Agreement.

                                       33
<Page>

                                  ARTICLE VIII.

                                    TRUSTEES

         Section 801. Certain Duties and Responsibilities.

         (a)      The duties and responsibilities of the Trustees shall be as
provided by this Trust Agreement and, in the case of the Property Trustee, by
the Trust Indenture Act. Notwithstanding the foregoing, no provision of this
Trust Agreement shall require the Trustees to expend or risk their own funds or
otherwise incur any financial liability in the performance of any of their
duties hereunder, or in the exercise of any of their rights or powers, if they
shall have reasonable grounds for believing that repayment of such funds or
adequate indemnity against such risk or liability is not reasonably assured to
it. No Administrative Trustee nor the Delaware Trustee shall be liable for its
act or omissions hereunder except as a result of its own gross negligence or
willful misconduct. The Property Trustee's liability shall be determined under
the Trust Indenture Act. Whether or not therein expressly so provided, every
provision of this Trust Agreement relating to the conduct or affecting the
liability of or affording protection to the Trustees shall be subject to the
provisions of this Section 801. To the extent that, at law or in equity, the
Delaware Trustee or an Administrative Trustee has duties (including fiduciary
duties) and liabilities relating thereto to the Trust or to the Securityholders,
the Delaware Trustee or such Administrative Trustee shall not be liable to the
Trust or to any Securityholder for such Trustee's good faith reliance on the
provisions of this Trust Agreement. The provisions of this Trust Agreement, to
the extent that they restrict the duties and liabilities of the Delaware Trustee
or the Administrative Trustees otherwise existing at law or in equity, are
agreed by the Depositor and the Securityholders to replace such other duties and
liabilities of the Delaware Trustee and the Administrative Trustees, as the case
may be.

         (b)      All payments made by the Property Trustee or a Paying Agent in
respect of the Trust Securities shall be made only from the revenue and proceeds
from the Trust Property and only to the extent that there shall be sufficient
revenue or proceeds from the Trust Property to enable the Property Trustee or a
Paying Agent to make payments in accordance with the terms hereof. Each
Securityholder, by its acceptance of a Trust Security, agrees that it shall look
solely to the revenue and proceeds from the Trust Property to the extent legally
available for distribution to it as herein provided and that the Trustees are
not personally liable to it for any amount distributable in respect of any Trust
Security or for any other liability in respect of any Trust Security. This
Section 801(b) does not limit the liability of the Trustees expressly set forth
elsewhere in this Trust Agreement or, in the case of the Property Trustee, in
the Trust Indenture Act.

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

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<Page>

                  (i)      the Property Trustee shall not be liable for any
         error of judgment made in good faith by an authorized officer of the
         Property Trustee, unless it shall be proved that the Property Trustee
         was negligent in ascertaining the pertinent facts;

                  (ii)     the Property Trustee shall not be liable with respect
         to any action taken or omitted to be taken by it in good faith in
         accordance with the direction of the Holders of not less than a
         majority in Liquidation Amount of the Trust Securities relating to the
         time, method and place of conducting any proceeding for any remedy
         available to the Property Trustee, or exercising any trust or power
         conferred upon the Property Trustee under this Trust Agreement;

                  (iii)    the Property Trustee's sole duty with respect to the
         custody, safe keeping and physical preservation of the Debentures and
         the Payment Account shall be to deal with such property in a similar
         manner as the Property Trustee deals with similar property for its own
         account, subject to the protections and limitations on liability
         afforded to the Property Trustee under this Trust Agreement and the
         Trust Indenture Act;

                  (iv)     the Property Trustee shall not be liable for any
         interest on any money received by it except as it may otherwise agree
         with the Depositor and money held by the Property Trustee need not be
         segregated from other funds held by it except in relation to the
         Payment Account maintained by the Property Trustee pursuant to Section
         301 and except to the extent otherwise required by law; and

                  (v)      the Property Trustee shall not be responsible for
         monitoring the compliance by the Administrative Trustees or the
         Depositor with their respective duties under this Trust Agreement, nor
         shall the Property Trustee be liable for the negligence, default or
         misconduct of the Administrative Trustees or the Depositor.

         Section 802. Certain Notices.

         (a)      Within five (5) Business Days after the occurrence of any
Event of Default actually known to the Property Trustee, the Property Trustee
shall transmit, in the manner and to the extent provided in Section 1008, notice
of such Event of Default to the Securityholders, the Administrative Trustees and
the Depositor, unless such Event of Default shall have been cured or waived. For
purposes of this Section 802, the term "Event of Default" means any event that
is, or after notice or lapse of time or both would become, an Event of Default.

         (b)      The Administrative Trustees shall transmit to the
Securityholders in the manner and to the extent provided in Section 1008 notice
of the Depositor's election to begin or further extend an Extended Interest
Period on the Debentures (unless such election shall have been revoked), and of
any election by the Depositor to extend or accelerate the Maturity Date of the
Debentures within the time specified for transmitting such notice to the holders
of the Debentures pursuant to the Indenture as originally executed.

         Section 803. Certain Rights of the Property Trustee. Subject to the
provisions of Section 801:

                                       35
<Page>

         (a)      the Property Trustee may rely and shall be protected in acting
or refraining from acting in good faith upon any resolution, Opinion of Counsel,
certificate, written representation of a Holder or transferee, certificate of
auditors or any other certificate, statement, instrument, opinion, report,
notice, request, consent, order, appraisal, bond, debenture, note, other
evidence of indebtedness or other paper or document believed by it to be genuine
and to have been signed or presented by the proper party or parties;

         (b)      if (i) in performing its duties under this Trust Agreement the
Property Trustee is required to decide between alternative courses of action; or
(ii) in construing any of the provisions of this Trust Agreement, the Property
Trustee finds the same ambiguous or inconsistent with other provisions contained
herein; or (iii) the Property Trustee is unsure of the application of any
provision of this Trust Agreement, then, except as to any matter as to which the
Preferred Securityholders are entitled to vote under the terms of this Trust
Agreement, the Property Trustee shall deliver a notice to the Depositor
requesting written instructions of the Depositor as to the course of action to
be taken and the Property Trustee shall take such action, or refrain from taking
such action, as the Property Trustee shall be instructed in writing to take, or
to refrain from taking, by the Depositor; provided, however, that if the
Property Trustee does not receive such instructions of the Depositor within ten
(10) Business Days after it has delivered such notice, or such reasonably
shorter period of time set forth in such notice (which to the extent practicable
shall not be less than two (2) Business Days), it may, but shall be under no
duty to, take or refrain from taking such action not inconsistent with this
Trust Agreement as it shall deem advisable and in the best interests of the
Securityholders, in which event the Property Trustee shall have no liability
except for its own bad faith, negligence or willful misconduct;

         (c)      any direction or act of the Depositor or the Administrative
Trustees contemplated by this Trust Agreement shall be sufficiently evidenced by
an Officers' Certificate;

         (d)      whenever in the administration of this Trust Agreement, the
Property Trustee shall deem it desirable that a matter be established before
undertaking, suffering or omitting any action hereunder, the Property Trustee
(unless other evidence is herein specifically prescribed) may, in the absence of
bad faith on its part, request and conclusively rely upon an Officers'
Certificate which, upon receipt of such request, shall be promptly delivered by
the Depositor or the Administrative Trustees;

         (e)      the Property Trustee shall have no duty to see to any
recording, filing or registration of any instrument (including any financing or
continuation statement or, except as provided in Section 405, any filing under
tax or securities laws or any filing under tax or securities laws) or any
re-recording, refiling or reregistration thereof;

         (f)      the Property Trustee may consult with counsel of its choice
(which counsel may be counsel to the Depositor or any of its Affiliates) and the
advice of such counsel shall be full and complete authorization and protection
in respect of any action taken, suffered or omitted by it hereunder in good
faith and in reliance thereon and, in accordance with such advice, such counsel
may be counsel to the Depositor or any of its Affiliates, and may include any of
its employees; the Property Trustee shall have the right at any time to seek
instructions concerning the administration of this Trust Agreement from any
court of competent jurisdiction;

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         (g)      the Property Trustee shall be under no obligation to exercise
any of the rights or powers vested in it by this Trust Agreement at the request,
order or direction of any of the Securityholders, pursuant to this Trust
Agreement, unless such Securityholders shall have offered to the Property
Trustee reasonable security or indemnity against the costs, expenses and
liabilities that might be incurred by it in compliance with such request, order
or direction; nothing contained herein shall, however, relieve the Property
Trustee of the obligation, upon the occurrence of an Event of Default (that has
not been cured or waived) to exercise such of the rights and powers vested in it
by this Trust Agreement, and to use the same degree of care and skill in their
exercise as a prudent man would exercise or use under the circumstances in the
conduct of his own affairs;

         (h)      the Property 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, note or other evidence of indebtedness or other paper
or document, unless requested in writing to do so by the Holders of not less
than a majority in Liquidation Amount of the Securities, but the Property
Trustee may make such further inquiry or investigation into such facts or
matters as it may see fit;

         (i)      the Property Trustee may execute any of the trusts or powers
hereunder or perform any duties hereunder either directly or by or through its
agents or attorneys, provided that the Property Trustee shall be responsible for
its own negligence or recklessness with respect to selection of any agent or
attorney appointed by it hereunder;

         (j)      whenever in the administration of this Trust Agreement the
Property Trustee shall deem it desirable to receive instructions with respect to
enforcing any remedy or right or taking any other action hereunder the Property
Trustee (i) may request instructions from the Holders of the Trust Securities
which instructions may only be given by the Holders of the same proportion in
Liquidation Amount of the Trust Securities as would be entitled to direct the
Property Trustee under the terms of the Trust Securities in respect of such
remedy, right or action; (ii) may refrain from enforcing such remedy or right or
taking such other action until such instructions are received; and (iii) shall
be protected in acting in accordance with such instructions; and

         (k)      except as otherwise expressly provided by this Trust
Agreement, the Property Trustee shall not be under any obligation to take any
action that is discretionary under the provisions of this Trust Agreement. No
provision of this Trust Agreement shall be deemed to impose any duty or
obligation on the Property Trustee to perform any act or acts or exercise any
right, power, duty or obligation conferred or imposed on it, in any jurisdiction
in which it shall be illegal, or in which the Property Trustee shall be
unqualified or incompetent in accordance with applicable law, to perform any
such act or acts, or to exercise any such right, power, duty or obligation. No
permissive power or authority available to the Property Trustee shall be
construed to be a duty.

         Section 804. Not Responsible for Recitals or Issuance of Securities.
The Recitals contained herein and in the Trust Securities Certificates shall be
taken as the statements of the Trust, and the Trustees do not assume any
responsibility for their correctness. The Trustees shall not be accountable for
the use or application by the Depositor of the proceeds of the Debentures.

                                       37
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         Section 805. May Hold Securities. Any Trustee or any other agent of any
Trustee or the Trust, in its individual or any other capacity, may become the
owner or pledgee of the Trust Securities and, subject to Sections 808 and 813
and except as provided in the definition of the term "Outstanding" in Article I,
may otherwise deal with the Trust with the same rights it would have if it were
not a Trustee or such other agent.

         Section 806. Compensation; Indemnity; Fees. The Depositor agrees:

         (a)      to pay to the Trustees from time to time reasonable
compensation for all services rendered by them hereunder (which compensation
shall not be limited by any provision of law in regard to the compensation of a
trustee of an express trust, in the case of the Property Trustee as set forth in
a written agreement between the Depositor and the Property Trustee);

         b)       except as otherwise expressly provided herein, to reimburse
the Trustees upon request for all reasonable expenses, disbursements and
advances incurred or made by the Trustees in accordance with any provision of
this Trust Agreement (including the reasonable compensation and the expenses and
disbursements of its agents and counsel), except any such expense, disbursement
or advance as may be attributable to such Trustee's negligence, bad faith or
willful misconduct (or, in the case of the Administrative Trustees or the
Delaware Trustee, any such expense, disbursement or advance as may be
attributable to its, his or her gross negligence, bad faith or willful
misconduct); and

         (c)      to indemnify each of the Trustees or any predecessor Trustee
for, and to hold the Trustees harmless against, any loss, damage, claims,
liability, penalty or expense incurred without negligence or bad faith on its
part, arising out of or in connection with the acceptance or administration of
this Trust Agreement, including the costs and expenses of defending itself
against any claim or liability in connection with the exercise or performance of
any of its powers or duties hereunder, except any such expense, disbursement or
advance as may be attributable to such Trustee's negligence, bad faith or
willful misconduct (or, in the case of the Administrative Trustees or the
Delaware Trustee, any such expense, disbursement or advance as may be
attributable to its, his or her gross negligence, bad faith or willful
misconduct).

           No Trustee may claim any Lien or charge on any Trust Property as a
result of any amount due pursuant to this Section 806.

         Section 807. Corporate Property Trustee Required; Eligibility of
Trustees.

         (a)      There shall at all times be a Property Trustee hereunder with
respect to the Trust Securities. The Property Trustee shall be a Person that is
eligible pursuant to the Trust Indenture Act to act as such and has a combined
capital and surplus of at least $50,000,000. If any such Person publishes
reports of condition at least annually, pursuant to law or to the requirements
of its supervising or examining authority, then for the purposes of this Section
807, the combined capital and surplus of such Person shall be deemed to be its
combined capital and surplus as set forth in its most recent report of condition
so published. If at any time the Property Trustee with respect to the Trust
Securities shall cease to be eligible in accordance with the provisions of this
Section 807, it shall resign immediately in the manner and with the effect
hereinafter specified in

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this Article VIII. The Property Trustee and the Delaware Trustee may, but need
not be, the same person.

         (b)      There shall at all times be one or more Administrative
Trustees hereunder with respect to the Trust Securities. Each Administrative
Trustee shall be either a natural person who is at least 21 years of age or a
legal entity that shall act through one or more persons authorized to bind that
entity.

         (c)      There shall at all times be a Delaware Trustee with respect to
the Trust Securities. The Delaware Trustee shall either be (i) a natural person
who is at least 21 years of age and a resident of the State of Delaware; or (ii)
a legal entity with its principal place of business in the State of Delaware and
that otherwise meets the requirements of applicable Delaware law that shall act
through one or more persons authorized to bind such entity.

         Section 808. Conflicting Interests. If the Property Trustee has or
shall acquire a conflicting interest within the meaning of the Trust Indenture
Act, the Property Trustee shall either eliminate such interest or resign, to the
extent and in the manner provided by, and subject to the provisions of, the
Trust Indenture Act and this Trust Agreement.

         Section 809. Co-Trustees and Separate Trustee.

         (a)      Unless a Debenture Event of Default shall have occurred and be
continuing, at any time or times, for the purpose of meeting the legal
requirements of the Trust Indenture Act or of any jurisdiction in which any part
of the Trust Property may at the time be located, the Depositor shall have power
to appoint, and upon the written request of the Property Trustee, the Depositor
shall for such purpose join with the Property Trustee in the execution, delivery
and performance of all instruments and agreements necessary or proper to
appoint, one or more Persons approved by the Property Trustee either to act as
co-trustee, jointly with the Property Trustee, of all or any part of such Trust
Property, or to the extent required by law to act as separate trustee of any
such property, in either case with such powers as may be provided in the
instrument of appointment, and to vest in such Person or Persons in the capacity
aforesaid, any property, title, right or power deemed necessary or desirable,
subject to the other provisions of this Section 809. If the Depositor does not
join in such appointment within 15 days after the receipt by it of a request so
to do, or in case a Debenture Event of Default has occurred and is continuing,
the Property Trustee alone shall have power to make such appointment. Any
co-trustee or separate trustee appointed pursuant to this Section 809 shall
either be (i) a natural person who is at least 21 years of age and a resident of
the United States; or (ii) a legal entity with its principal place of business
in the United States that shall act through one or more persons authorized to
bind such entity.

         (b)      Should any written instrument from the Depositor be required
by any co-trustee or separate trustee so appointed for more fully confirming to
such co-trustee or separate trustee such property, title, right, or power, any
and all such instruments shall, on request, be executed, acknowledged, and
delivered by the Depositor.

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<Page>

         (c)      Every co-trustee or separate trustee shall, to the extent
permitted by law, but to such extent only, be appointed subject to the following
terms, namely:

                  (i)      The Trust Securities shall be executed and delivered
         and all rights, powers, duties and obligations hereunder in respect of
         the custody of securities, cash and other personal property held by, or
         required to be deposited or pledged with, the Trustees specified
         hereunder, shall be exercised, solely by such Trustees and not by such
         co-trustee or separate trustee.

                  (ii)     The rights, powers, duties and obligations hereby
         conferred or imposed upon the Property Trustee in respect of any
         property covered by such appointment shall be conferred or imposed upon
         and exercised or performed by the Property Trustee or by the Property
         Trustee and such co-trustee or separate trustee jointly, as shall be
         provided in the instrument appointing such co-trustee or separate
         trustee, except to the extent that under any law of any jurisdiction in
         which any particular act is to be performed, the Property Trustee shall
         be incompetent or unqualified to perform such act, in which event such
         rights, powers, duties and obligations shall be exercised and performed
         by such co-trustee or separate trustee.

                  (iii)    The Property Trustee at any time, by an instrument in
         writing executed by it, with the written concurrence of the Depositor,
         may accept the resignation of or remove any co-trustee or separate
         trustee appointed under this Section 809, and, in case a Debenture
         Event of Default has occurred and is continuing, the Property Trustee
         shall have the power to accept the resignation of, or remove, any such
         co-trustee or separate trustee without the concurrence of the
         Depositor. Upon the written request of the Property Trustee, the
         Depositor shall join with the Property Trustee in the execution,
         delivery and performance of all instruments and agreements necessary or
         proper to effectuate such resignation or removal. A successor to any
         co-trustee or separate trustee so resigned or removed may be appointed
         in the manner provided in this Section 809.

         (iv)     No co-trustee or separate trustee hereunder shall be
personally liable by reason of any act or omission of the Property Trustee or
any other trustee hereunder.

         (v)      The Property Trustee shall not be liable by reason of any act
of a co-trustee or separate trustee.

         (vi)     Any Act of the Holders delivered to the Property Trustee shall
be deemed to have been delivered to each such co-trustee and separate trustee.

         Section 810. Resignation and Removal; Appointment of Successor.

         (a)      No resignation or removal of any Trustee (the "Relevant
Trustee") and no appointment of a successor Trustee pursuant to this Article
VIII shall become effective until the acceptance of appointment by the successor
Trustee in accordance with the applicable requirements of Section 811.

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<Page>

         (b)      Subject to the immediately preceding paragraph, the Relevant
Trustee may resign at any time with respect to the Trust Securities by giving
written notice thereof to the Securityholders. If the instrument of acceptance
by the successor Trustee required by Section 811 shall not have been delivered
to the Relevant Trustee within thirty (30) days after the giving of such notice
of resignation, the Relevant Trustee may petition, at the expense of the
Depositor, any court of competent jurisdiction for the appointment of a
successor Relevant Trustee with respect to the Trust Securities.

         (c)      Unless a Debenture Event of Default shall have occurred and be
continuing, any Trustee may be removed at any time by an Act of the Common
Securityholder. If a Debenture Event of Default shall have occurred and be
continuing, the Property Trustee or the Delaware Trustee, or both of them, may
be removed at such time by an Act of the Holders of a majority in Liquidation
Amount of the Preferred Securities, delivered to the Relevant Trustee (in its
individual capacity and on behalf of the Trust). An Administrative Trustee may
be removed by the Common Securityholder at any time.

         (d)      If any Trustee shall resign, be removed or become incapable of
acting as Trustee, or if a vacancy shall occur in the office of any Trustee for
any cause, at a time when no Debenture Event of Default shall have occurred and
be continuing, the Common Securityholder, by an Act of the Common Securityholder
delivered to the retiring Trustee, shall promptly appoint a successor Trustee or
Trustees with respect to the Trust Securities and the Trust, and the successor
Trustee shall comply with the applicable requirements of Section 811. If the
Property Trustee or the Delaware Trustee shall resign, be removed or become
incapable of continuing to act as the Property Trustee or the Delaware Trustee,
as the case may be, at a time when a Debenture Event of Default shall have
occurred and is continuing, the Preferred Securityholders, by an Act of the
Securityholders of a majority in Liquidation Amount of the Preferred Securities
then Outstanding delivered to the retiring Relevant Trustee, shall promptly
appoint a successor Relevant Trustee or Trustees with respect to the Trust
Securities and the Trust, and such successor Trustee shall comply with the
applicable requirements of Section 811. If an Administrative Trustee shall
resign, be removed or become incapable of acting as an Administrative Trustee,
at a time when a Debenture Event of Default shall have occurred and be
continuing, the Common Securityholder, by an Act of the Common Securityholder
delivered to an Administrative Trustee, shall promptly appoint a successor
Administrative Trustee or Administrative Trustees with respect to the Trust
Securities and the Trust, and such successor Administrative Trustee or
Administrative Trustees shall comply with the applicable requirements of Section
811. If no successor Relevant Trustee with respect to the Trust Securities shall
have been so appointed by the Common Securityholder or the Preferred
Securityholders and accepted appointment in the manner required by Section 811,
any Securityholder who has been a Securityholder of Trust Securities for six
consecutive months on behalf of himself or herself and all others similarly
situated may petition a court of competent jurisdiction for the appointment of a
successor Relevant Trustee with respect to the Trust Securities.

         (e)      The Property Trustee shall give notice of each resignation and
each removal of a Trustee and each appointment of a successor Trustee to all the
Securityholders in the manner provided in Section 1008 and shall give notice to
the Depositor. Each notice shall include the

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name of the successor Relevant Trustee and the address of its Corporate Trust
Office if it is the Property Trustee.

         (f)      Notwithstanding the foregoing or any other provision of this
Trust Agreement, in the event any Administrative Trustee or a Delaware Trustee
who is a natural person dies or becomes, in the opinion of the Depositor,
incompetent or incapacitated, the vacancy created by such death, incompetence or
incapacity may be filled by (a) the unanimous act of the remaining
Administrative Trustees if there are at least two of them; or (b) otherwise by
the Depositor (with the successor in each case being a Person who satisfies the
eligibility requirement for Administrative Trustees set forth in Section 807).

         Section 811. Acceptance of Appointment by Successor.

         (a)      In case of the appointment hereunder of a successor Relevant
Trustee with respect to the Trust Securities and the Trust, the retiring
Relevant Trustee and each successor Relevant Trustee with respect to the Trust
Securities shall execute and deliver an instrument hereto wherein each successor
Relevant Trustee shall accept such appointment and which shall contain such
provisions as shall be necessary or desirable to transfer and confirm to, and to
vest in, each successor Relevant Trustee all the rights, powers, trusts and
duties of the retiring Relevant Trustee with respect to the Trust Securities and
the Trust and upon the execution and delivery of such instrument the resignation
or removal of the retiring Relevant Trustee shall become effective to the extent
provided therein and each such successor Relevant Trustee, without any further
act, deed or conveyance, shall become vested with all the rights, powers, trusts
and duties of the retiring Relevant Trustee with respect to the Trust Securities
and the Trust; but, on request of the Trust or any successor Relevant Trustee
such retiring Relevant Trustee shall duly assign, transfer and deliver to such
successor Relevant Trustee all the Trust Property, all proceeds thereof and
money held by such retiring Relevant Trustee hereunder with respect to the Trust
Securities and the Trust.

         (b)      Upon request of any such successor Relevant Trustee, the Trust
shall execute any and all instruments for more fully and certainly vesting in
and confirming to such successor Relevant Trustee all such rights, powers and
trusts referred to in the immediately preceding paragraph, as the case may be.

         (c)      No successor Relevant Trustee shall accept its appointment
unless at the time of such acceptance such successor Relevant Trustee shall be
qualified and eligible under this Article VIII.

           Section 812. Merger, Conversion, Consolidation or Succession to
Business. Any Person into which the Property Trustee, the Delaware Trustee or
any Administrative 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 such Relevant Trustee shall be a party, or any
corporation succeeding to all or substantially all the corporate trust business
of such Relevant Trustee, shall be the successor of such Relevant Trustee
hereunder, provided such Person shall be otherwise qualified and eligible under
this Article VIII, without the execution or filing of any paper or any further
act on the part of any of the parties hereto.

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<Page>

         Section 813. Preferential Collection of Claims Against the Depositor or
the Trust. If and when the Property Trustee or the Delaware Trustee shall be or
become a creditor of the Depositor or the Trust (or any other obligor upon the
Debentures or the Trust Securities), the Property Trustee or the Delaware
Trustee, as the case may be, shall be subject to and shall take all actions
necessary in order to comply with the provisions of the Trust Indenture Act
regarding the collection of claims against the Depositor or the Trust (or any
such other obligor).

         Section 814. Reports by the Property Trustee.

         (a)      The Property Trustee shall transmit to the Securityholders
such reports concerning the Property Trustee, its actions under this Trust
Agreement and the property and funds in its possession in its capacity as the
Property Trustee as may be required pursuant to the Trust Indenture Act at the
times and in the manner provided pursuant thereto.

         (b)      A copy of each such report shall, at the time of such
transmission to the Holders, be filed by the Property Trustee with the Nasdaq
National Market, and each national securities exchange or other organization
upon which the Trust Securities are listed, and also with the Commission and the
Depositor.

         Section 815. Reports to the Property Trustee. The Depositor and the
Administrative Trustees on behalf of the Trust shall provide to the Property
Trustee such documents, reports and information as required by Section 314 of
the Trust Indenture Act (if any) and the compliance certificate required by
Section 314(a) of the Trust Indenture Act in the form, in the manner and at the
times required by Section 314 of the Trust Indenture Act.

         Section 816. Evidence of Compliance with Conditions Precedent. Each of
the Depositor and the Administrative Trustees on behalf of the Trust shall
provide to the Property Trustee such evidence of compliance with any conditions
precedent, if any, provided for in this Trust Agreement that relate to any of
the matters set forth in Section 314(c) of the Trust Indenture Act. Any
certificate or opinion required to be given by an officer pursuant to Section
314(c)(1) of the Trust Indenture Act shall be given in the form of an Officers'
Certificate.

         Section 817. Number of Trustees.

         (a)      The number of Trustees shall be five, provided that the Holder
of all of the Common Securities by written instrument may increase or decrease
the number of the Administrative Trustees. The Property Trustee and the Delaware
Trustee may be the same Person.

         (b)      If a Trustee ceases to hold office for any reason and the
number of the Administrative Trustees is not reduced pursuant to Section 817(a),
or if the number of the Trustees is increased pursuant to Section 817(a), a
vacancy shall occur. The vacancy shall be filled with a Trustee appointed in
accordance with Section 810.

         (c)      The death, resignation, retirement, removal, bankruptcy,
incompetence or incapacity to perform the duties of a Trustee shall not operate
to annul the Trust. Whenever a

                                       44
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vacancy in the number of the Administrative Trustees shall occur, until such
vacancy is filled by the appointment of an Administrative Trustee in accordance
with Section 810, the Administrative Trustees in office, regardless of their
number (and notwithstanding any other provision of this Agreement), shall have
all the powers granted to the Administrative Trustees and shall discharge all
the duties imposed upon the Administrative Trustees by this Trust Agreement.

         Section 818. Delegation of Power.

         (a)      Any Administrative Trustee may, by power of attorney
consistent with applicable law, delegate to any other natural person over the
age of 21 his or her power for the purpose of executing any documents
contemplated in Section 207(a); and

         (b)      The Administrative Trustees shall have power to delegate from
time to time to such of their number or to the Depositor the doing of such
things and the execution of such instruments either in the name of the Trust or
the names of the Administrative Trustees or otherwise as the Administrative
Trustees may deem expedient, to the extent such delegation is not prohibited by
applicable law or contrary to the provisions of the Trust, as set forth herein.

         Section 819. Voting. Except as otherwise provided in this Trust
Agreement, the consent or approval of the Administrative Trustees shall require
consent or approval by not less than a majority of the Administrative Trustees,
unless there are only two, in which case both must consent.

                                   ARTICLE IX.

                       TERMINATION, LIQUIDATION AND MERGER

         Section 901. Termination upon Expiration Date. Unless earlier
dissolved, the Trust shall automatically dissolve on September 30, 2033 (the
"Expiration Date") subject to distribution of the Trust Property in accordance
with Section 904.

         Section 902. Early Termination. The first to occur of any of the
following events is an "Early Termination Event":

         (a)      the occurrence of a Bankruptcy Event in respect of, or the
dissolution or liquidation of, the Depositor;

         (b)      delivery of written direction to the Property Trustee by the
Depositor at any time (which direction is wholly optional and within the
discretion of the Depositor, subject to Depositor having received prior approval
of the Board of Governors of the Federal Reserve System if so required under
applicable guidelines, policies or regulations thereof) to dissolve the Trust
and distribute the Debentures to the Securityholders in exchange for the
Preferred Securities in accordance with Section 904;

                                       45
<Page>

         (c)      the redemption of all of the Preferred Securities in
connection with the redemption of all of the Debentures (whether upon a
Debenture Redemption Date or the maturity of the Debentures); and

         (d)      the entrance of an order for dissolution of the Trust shall
have been entered by a court of competent jurisdiction.

         Section 903. Termination. The respective obligations and
responsibilities of the Trustees and the Trust created and continued hereby
shall terminate upon the latest to occur of the following: (a) the distribution
by the Property Trustee to the Securityholders upon the liquidation of the Trust
pursuant to Section 904, or upon the redemption of all of the Trust Securities
pursuant to Section 402, of all amounts required to be distributed hereunder
upon the final payment of the Trust Securities; (b) the payment of any expenses
owed by the Trust; (c) the discharge of all administrative duties of the
Administrative Trustees, including the performance of any tax reporting
obligations with respect to the Trust or the Securityholders; and (d) the filing
of a Certificate of Cancellation by the Administrative Trustee under the
Delaware Business Trust Act.

         Section 904. Liquidation.

         (a)      If an Early Termination Event specified in clause (a), (b), or
(d) of Section 902 occurs or upon the Expiration Date, the Trust shall be
liquidated by the Trustees as expeditiously as the Trustees determine to be
possible by distributing, after satisfaction of liabilities to creditors of the
Trust as provided by applicable law, to each Securityholder a Like Amount of
Debentures, subject to Section 904(d). Notice of liquidation shall be given by
the Property Trustee by first-class mail, postage prepaid, mailed not later than
thirty (30) nor more than sixty (60) days prior to the Liquidation Date to each
Holder of Trust Securities at such Holder's address appearing in the Securities
Register. All notices of liquidation shall:

                  (i)      state the Liquidation Date;

                  (ii)     state that from and after the Liquidation Date, the
         Trust Securities shall no longer be deemed to be Outstanding and any
         Trust Securities Certificates not surrendered for exchange shall be
         deemed to represent a Like Amount of Debentures; and

                  (iii)    provide such information with respect to the
         mechanics by which the Holders may exchange the Trust Securities
         Certificates for the Debentures, or, if Section 904(d) applies, receive
         a Liquidation Distribution, as the Administrative Trustees or the
         Property Trustee shall deem appropriate.

         (b)      Except where Section 902(c) or 904(d) applies, in order to
effect the liquidation of the Trust and distribution of the Debentures to the
Securityholders, the Property Trustee shall establish a record date for such
distribution (which shall be not more than 45 days prior to the Liquidation
Date) and, either itself acting as exchange agent or through the appointment of
a separate exchange agent, shall establish such procedures as it shall deem
appropriate to effect the distribution of Debentures in exchange for the
Outstanding Trust Securities Certificates; provided, however, that for any Trust
Securities held in global form, the distribution of the Debentures shall be made
to the holder of such Trust Securities as of one Business Day preceding the
Liquidation Date.

                                       46
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         (c)      Except where Section 902(c) or 904(d) applies, after the
Liquidation Date, (i) the Trust Securities shall no longer be deemed to be
outstanding; (ii) certificates representing a Like Amount of the Debentures
shall be issued to the Holders of Trust Securities Certificates upon surrender
of such certificates to the Administrative Trustees or their agent for exchange;
(iii) the Depositor shall use its best efforts to have the Debentures listed on
such national securities exchange or included in a comparable automated
quotation system as the Preferred Securities are then listed or traded; (iv) any
Trust Securities Certificates not so surrendered for exchange shall be deemed to
represent a Like Amount of Debentures, accruing interest at the rate provided
for in the Debentures from the last Distribution Date on which a Distribution
was made on such Trust Securities Certificates until such certificates are so
surrendered (and until such certificates are so surrendered, no payments of
interest or principal shall be made to Holders of the Trust Securities
Certificates with respect to such Debentures); and (v) all rights of the
Securityholders holding the Trust Securities shall cease, except the right of
such Securityholders to receive the Debentures upon surrender of the Trust
Securities Certificates.

         (d)      In the event that, notwithstanding the other provisions of
this Section 904, whether because of an order for dissolution entered by a court
of competent jurisdiction or otherwise, distribution of the Debentures in the
manner provided herein is determined by the Property Trustee not to be
practical, the Trust Property shall be liquidated, and the Trust shall be
dissolved, wound-up or terminated, by the Property Trustee in such manner as the
Property Trustee determines. In such event, on the date of the dissolution,
winding-up or other termination of the Trust, the Securityholders shall be
entitled to receive out of the assets of the Trust available for distribution to
the Securityholders, after satisfaction of liabilities to creditors of the Trust
as provided by applicable law, an amount equal to the Liquidation Amount per
Trust Security plus accumulated and unpaid Distributions thereon to the date of
payment (such amount being the "Liquidation Distribution"). If, upon any such
dissolution, winding-up or termination, the Liquidation Distribution can be paid
only in part because the Trust has insufficient assets available to pay in full
the aggregate Liquidation Distribution, then, subject to the next succeeding
sentence, the amounts payable by the Trust on the Trust Securities shall be paid
on a pro rata basis (based upon Liquidation Amounts, subject to Section 407).
The Holder of the Common Securities shall be entitled to receive the Liquidation
Distributions upon any such dissolution, winding-up or termination pro rata
(determined as aforesaid) with the Holders of the Preferred Securities, except
that, if a Debenture Event of Default has occurred and is continuing, the
Preferred Securities shall have a priority over the Common Securities.

         Section 905. Mergers, Consolidations, Amalgamations or Replacements of
the Trust. The Trust may not merge with or into, consolidate, amalgamate, or be
replaced by, or convey, transfer or lease its properties and assets
substantially as an entirety to any corporation or other Person, except pursuant
to this Section 905. At the request of the Depositor, with the consent of the
Administrative Trustees and without the consent of the Holders of the Preferred
Securities, the Property Trustee or the Delaware Trustee, the Trust may merge
with or into, consolidate, amalgamate, be replaced by or convey, transfer or
lease its properties and assets substantially as an entirety to a trust
organized as such under the laws of any State; provided, that (a) such successor
entity either (i) expressly assumes all of the obligations of the Trust with
respect to the Preferred Securities; or (ii) substitutes for the Preferred
Securities other securities having substantially the same terms as the Preferred
Securities (the "Successor Securities") so long as

                                       47
<Page>

the Successor Securities rank the same as the Preferred Securities rank in
priority with respect to distributions and payments upon liquidation, redemption
and otherwise; (b) the Depositor expressly appoints a trustee of such successor
entity possessing substantially the same powers and duties as the Property
Trustee as the holder of the Debentures; (c) the Successor Securities are listed
or traded, or any Successor Securities shall be listed or traded upon
notification of issuance, on any national securities exchange or other
organization on which the Preferred Securities are then listed, if any; (d) such
merger, consolidation, amalgamation, replacement, conveyance, transfer or lease
does not adversely affect the rights, preferences and privileges of the Holders
of the Preferred Securities (including any Successor Securities) in any material
respect; (e) such successor entity has a purpose substantially identical to that
of the Trust; (f) prior to such merger, consolidation, amalgamation,
replacement, conveyance, transfer or lease, the Depositor has received an
Opinion of Counsel to the effect that (i) such merger, consolidation,
amalgamation, replacement, conveyance, transfer or lease does not adversely
affect the rights, preferences and privileges of the Holders of the Preferred
Securities (including any Successor Securities) in any material respect; and
(ii) following such merger, consolidation, amalgamation, replacement,
conveyance, transfer or lease, neither the Trust nor such successor entity shall
be required to register as an "investment company" under the Investment Company
Act; and (g) the Depositor owns all of the Common Securities of such successor
entity and guarantees the obligations of such successor entity under the
Successor Securities at least to the extent provided by the Guarantee, the
Debentures, this Trust Agreement and the Expense Agreement. For purposes of this
Section 905, any such consolidation, merger, sale, conveyance, transfer or other
disposition as a result of which (a) the Company is not the surviving Person,
and (b) the same Person is not both (i) the primary obligor in respect of the
Debentures and (ii) the Guarantor under that certain Preferred Securities
Guarantee Agreement of even date herewith (the "Guarantee") between the Company
and Wilmington Trust Company, as guarantee trustee, shall be deemed to
constitute a replacement of the Trust by a successor entity; provided further
that, notwithstanding the foregoing, in the event that upon the consummation of
such a consolidation, merger, sale, conveyance, transfer or other disposition,
the parent company (if any) of the Company, or its successor, is a bank holding
company or financial holding company or comparably regulated financial
institution, such parent company shall guarantee the obligations of the Trust
(and any successor thereto) under the Preferred Securities (including any
Successor Securities) at least to the extent provided by the Guarantee, the
Debentures, the Trust Agreement and the Expense Agreement. Notwithstanding the
foregoing, the Trust shall not, except with the consent of the Holders of 100%
in Liquidation Amount of the Preferred Securities, consolidate, amalgamate,
merge with or into, or be replaced by or convey, transfer or lease its
properties and assets substantially as an entirety to any other Person or permit
any other Person to consolidate, amalgamate, merge with or into, or replace it
if such consolidation, amalgamation, merger or replacement would cause the Trust
or the successor entity to be classified as other than a grantor trust for
United States federal income tax purposes.

                                   ARTICLE X.

                            MISCELLANEOUS PROVISIONS

         Section 1001. Limitation of Rights of the Securityholders. The death or
incapacity of any Person having an interest, beneficial or otherwise, in the
Trust Securities shall not operate to

                                       48
<Page>

terminate this Trust Agreement, nor entitle the legal representatives or heirs
of such Person or any Securityholder for such Person to claim an accounting,
take any action or bring any proceeding in any court for a partition or
winding-up of the arrangements contemplated hereby, nor otherwise affect the
rights, obligations and liabilities of the parties hereto or any of them.

         Section 1002. Amendment.

         (a)      This Trust Agreement may be amended from time to time by
the Trustees and the Depositor, without the consent of any Securityholders,
(i) as provided in Section 811 with respect to acceptance of appointment by a
successor Trustee; (ii) to cure any ambiguity, correct or supplement any
provision herein or therein which may be inconsistent with any other
provision herein or therein, or to make any other provisions with respect to
matters or questions arising under this Trust Agreement, that shall not be
inconsistent with the other provisions of this Trust Agreement; (iii) to
modify, eliminate or add to any provisions of this Trust Agreement to such
extent as shall be necessary to ensure that the Trust shall be classified for
United States federal income tax purposes as a grantor trust at all times
that any of the Trust Securities are outstanding or to ensure that the Trust
shall not be required to register as an "investment company" under the
Investment Company Act; or (iv) to reduce or increase the Liquidation Amount
per Trust Security and simultaneously to correspondingly increase or decrease
the number of Trust Securities issued and Outstanding solely for the purpose
of maintaining the eligibility of the Preferred Securities for quotation or
listing on the Nasdaq Nation Market any national securities exchange or other
organization on which the Preferred Securities are then included, quoted or
listed; provided, however, that in the case of clause (ii), such action shall
not adversely affect in any material respect the interests of any
Securityholder, and provided further, that in the case of clause (iv) the
aggregate Liquidation Amount of the Trust Securities Outstanding upon
completion of any such reduction or increase must be the same as the
aggregate Liquidation Amount of the Trust Securities outstanding immediately
prior to such reduction or increase, and any amendments of this Trust
Agreement shall become effective when notice thereof is given to the
Securityholders (or, in the case of an amendment pursuant to clause (iv), as
of the date specified in the notice).

         (b)      Except as provided in Section 601(c) or Section 1002(c)
hereof, any provision of this Trust Agreement may be amended by the Trustees and
the Depositor (i) with the consent of the Trust Securityholders representing not
less than a majority (based upon Liquidation Amounts) of the Trust Securities
then Outstanding; and (ii) upon receipt by the Trustees of an Opinion of Counsel
to the effect that such amendment or the exercise of any power granted to the
Trustees in accordance with such amendment shall not affect the Trust's status
as a grantor trust for United States federal income tax purposes or the Trust's
exemption from status of an "investment company" under the Investment Company
Act.

         (c)      In addition to and notwithstanding any other provision in this
Trust Agreement, without the consent of each affected Securityholder (such
consent being obtained in accordance with Section 603 or 606 hereof), this Trust
Agreement may not be amended to (i) change the amount or timing of any
Distribution on the Trust Securities or otherwise adversely affect the amount of
any Distribution required to be made in respect of the Trust Securities as of a
specified date; or (ii) restrict the right of a Securityholder to institute suit
for the enforcement of any such

                                       49
<Page>

payment on or after such date; notwithstanding any other provision herein,
without the unanimous consent of the Securityholders (such consent being
obtained in accordance with Section 603 or 606 hereof), this paragraph (c) of
this Section 1002 may not be amended.

         (d)      Notwithstanding any other provisions of this Trust Agreement,
no Trustee shall enter into or consent to any amendment to this Trust Agreement
which would cause the Trust to fail or cease to qualify for the exemption from
status of an "investment company" under the Investment Company Act or to fail or
cease to be classified as a grantor trust for United States federal income tax
purposes.

         (e)      Notwithstanding anything in this Trust Agreement to the
contrary, without the consent of the Depositor, this Trust Agreement may not be
amended in a manner which imposes any additional obligation on the Depositor.

         (f)      In the event that any amendment to this Trust Agreement is
made, the Administrative Trustees shall promptly provide to the Depositor a copy
of such amendment.

         (g)      Neither the Property Trustee nor the Delaware Trustee shall be
required to enter into any amendment to this Trust Agreement which affects its
own rights, duties or immunities under this Trust Agreement. The Property
Trustee shall be entitled to receive an Opinion of Counsel and an Officers'
Certificate stating that any amendment to this Trust Agreement has been effected
in compliance with this Trust Agreement.

         Section 1003. Separability. In case any provision in this Trust
Agreement or in the Trust Securities Certificates shall be invalid, illegal or
unenforceable, the validity, legality and enforceability of the remaining
provisions shall not in any way be affected or impaired thereby.

         Section 1004. Governing Law. THIS TRUST AGREEMENT AND THE RIGHTS AND
OBLIGATIONS OF EACH OF THE SECURITYHOLDERS, THE TRUST AND THE TRUSTEES WITH
RESPECT TO THIS TRUST AGREEMENT AND THE TRUST SECURITIES SHALL BE CONSTRUED IN
ACCORDANCE WITH AND GOVERNED BY THE LAWS OF THE STATE OF DELAWARE (WITHOUT
REGARD TO ITS CONFLICT OF LAWS PRINCIPLES).

         Section 1005. Payments Due on Non-Business Day. If the date fixed for
any payment on any Trust Security shall be a day that is not a Business Day,
then such payment need not be made on such date but may be made on the next
succeeding day which is a Business Day, except that, if such Business Day is in
the next succeeding calendar year, such payment shall be made on the immediately
preceding Business Day (and without any reduction of interest or any other
payment in respect of any such acceleration), in each case with the same force
and effect as though made on the date fixed for such payment, and no
distribution shall accumulate thereon for the period after such date.

         Section 1006. Successors. This Trust Agreement shall be binding upon
and shall inure to the benefit of any successor to the Depositor, the Trust or
the Relevant Trustee(s), including any successor by operation of law. Except in
connection with a consolidation, merger or sale

                                       50
<Page>

involving the Depositor that is permitted under Article XII of the Indenture and
pursuant to which the assignee agrees in writing to perform the Depositor's
obligations hereunder, the Depositor shall not assign its obligations hereunder.

         Section 1007. Headings. The Article and Section headings are for
convenience only and shall not affect the construction of this Trust Agreement.

         Section 1008. Reports, Notices and Demands. Any report, notice, demand
or other communication which by any provision of this Trust Agreement is
required or permitted to be given or served to or upon any Securityholder or the
Depositor may be given or served in writing by deposit thereof, first-class
postage prepaid, in the United States mail, hand delivery or facsimile
transmission, in each case, addressed, (a) in the case of a Preferred
Securityholder, to such Preferred Securityholder as such Securityholder's name
and address may appear on the Securities Register; and (b) in the case of the
Common Securityholder or the Depositor, to MB Financial, Inc., 801 West Madison
Street, Chicago, Illinois 60607, Attention: Chief Financial Officer, facsimile
no.: (773) 278-0092. Any notice to the Preferred Securityholders shall also be
given to such owners as have, within two years preceding the giving of such
notice, filed their names and addresses with the Property Trustee for that
purpose. Such notice, demand or other communication to or upon a Securityholder
shall be deemed to have been sufficiently given or made, for all purposes, upon
hand delivery, mailing or transmission.

         Any notice, demand or other communication which by any provision of
this Trust Agreement is required or permitted to be given or served to or upon
the Trust, the Property Trustee or the Administrative Trustees shall be given in
writing addressed (until another address is published by the Trust) as follows:
(a) with respect to the Property Trustee, to Wilmington Trust Company, Rodney
Square North, 1100 North Market Street, Wilmington, Delaware 19890-0001,
Attention: Corporate Trust Department; (b) with respect to the Delaware Trustee,
to Wilmington Trust Company, at the address above; and (c) with respect to the
Administrative Trustees, to them at the address above for notices to the
Depositor, marked "Attention: Administrative Trustees of MB Financial Capital
Trust I, c/o MB Financial, Inc." Such notice, demand or other communication to
or upon the Trust or the Property Trustee shall be deemed to have been
sufficiently given or made only upon actual receipt of the writing by the Trust
or the Property Trustee.

         Section 1009. Agreement Not to Petition. Each of the Trustees and the
Depositor agrees for the benefit of the Securityholders that, until at least one
year and one day after the Trust has been terminated in accordance with Article
IX, they shall not file, or join in the filing of, a petition against the Trust
under any bankruptcy, insolvency, reorganization or other similar law
(including, without limitation, the United States Bankruptcy Code of 1978, as
amended) (collectively, "Bankruptcy Laws") or otherwise join in the commencement
of any proceeding against the Trust under any Bankruptcy Law. In the event the
Depositor or any of the Trustees takes action in violation of this Section 1009,
the Property Trustee agrees, for the benefit of the Securityholders, that at the
expense of the Depositor (which expense shall be paid prior to the filing), it
shall file an answer with the bankruptcy court or otherwise properly contest the
filing of such petition by the Depositor or such Trustee against the Trust or
the commencement of such action and raise the defense that the Depositor or such
Trustee has agreed in writing not to take

                                       51
<Page>

such action and should be stopped and precluded therefrom. The provisions of
this Section 1009 shall survive the termination of this Trust Agreement.

         Section 1010. Trust Indenture Act; Conflict with Trust Indenture Act.

         (a)      This Trust Agreement is subject to the provisions of the Trust
Indenture Act that are required to be part of this Trust Agreement and shall, to
the extent applicable, be governed by such provisions.

         (b)      The Property Trustee shall be the only Trustee which is a
trustee for the purposes of the Trust Indenture Act.

         (c)      If any provision hereof limits, qualifies or conflicts with
another provision hereof which is required to be included in this Trust
Agreement by any of the provisions of the Trust Indenture Act, such required
provision shall control. If any provision of this Trust Agreement modifies or
excludes any provision of the Trust Indenture Act which may be so modified or
excluded, the latter provision shall be deemed to apply to this Trust Agreement
as so modified or to be excluded, as the case may be.

         (d)      The application of the Trust Indenture Act to this Trust
Agreement shall not affect the nature of the Trust Securities as equity
securities representing undivided beneficial interests in the assets of the
Trust.

         Section 1011. Acceptance of Terms of the Trust Agreement, the Guarantee
and the Indenture. THE RECEIPT AND ACCEPTANCE OF A TRUST SECURITY OR ANY
INTEREST THEREIN BY OR ON BEHALF OF A SECURITYHOLDER OR ANY BENEFICIAL OWNER,
WITHOUT ANY SIGNATURE OR FURTHER MANIFESTATION OF ASSENT, SHALL CONSTITUTE THE
UNCONDITIONAL ACCEPTANCE BY THE SECURITYHOLDER AND ALL OTHERS HAVING A
BENEFICIAL INTEREST IN SUCH TRUST SECURITY OF ALL THE TERMS AND PROVISIONS OF
THIS TRUST AGREEMENT AND AGREEMENT TO THE SUBORDINATION PROVISIONS AND OTHER
TERMS OF THE GUARANTEE AND THE INDENTURE, AND SHALL CONSTITUTE THE AGREEMENT OF
THE TRUST, SUCH SECURITYHOLDER AND SUCH OTHERS THAT THE TERMS AND PROVISIONS OF
THIS TRUST AGREEMENT SHALL BE BINDING, OPERATIVE AND EFFECTIVE AS BETWEEN THE
TRUST AND SUCH SECURITYHOLDER AND SUCH OTHERS. WITHOUT LIMITING THE FOREGOING,
BY ACCEPTANCE OF A PREFERRED SECURITY, EACH HOLDER THEREOF SHALL BE DEEMED TO
HAVE AGREED TO TREAT, FOR ALL UNITED STATES FEDERAL INCOME TAX AND FINANCIAL
ACCOUNTING PURPOSES, THE DEBENTURES AS INDEBTEDNESS OF THE COMPANY AND THE
PREFERRED SECURITIES AS EVIDENCING AN UNDIVIDED BENEFICIAL OWNERSHIP INTEREST IN
THE DEBENTURES.

                                       52

<Page>

IN WITNESS WHEREOF, the parties hereto have caused this Amended and Restated
Trust Agreement to be duly executed as of this _____ day of ________, 2002.

                                      MB FINANCIAL, INC.,
                                      as Depositor

                                      By:    ___________________________________
                                      Name:  ___________________________________
                                      Title: ___________________________________

                                      WILMINGTON TRUST COMPANY,
                                      as Property Trustee

                                      By:    ___________________________________
                                      Name:  ___________________________________
                                      Title: ___________________________________

                                      WILMINGTON TRUST COMPANY,
                                      as Delaware Trustee

                                      By:    ___________________________________
                                      Name:  ___________________________________
                                      Title: ___________________________________

                                      __________________________________________
                                      MITCHELL FEIGER, as Administrative Trustee

                                      __________________________________________
                                      JILL E. YORK, as Administrative Trustee

                                      __________________________________________
                                      DORIA L. KOROS, as Administrative Trustee

                                       53
<Page>

                                    EXHIBIT A
                              CERTIFICATE OF TRUST
                                       OF
                          MB FINANCIAL CAPITAL TRUST I

         THIS CERTIFICATE OF TRUST OF MB FINANCIAL CAPITAL TRUST I (the
"Trust") is being duly executed and filed by WILMINGTON TRUST COMPANY, a
Delaware banking corporation, as trustee, to form a business trust under the
Delaware Business Trust Act (12 Del. C. Section 3801 et seq.) (the "Act").

         1.       NAME. The name of the business trust formed hereby is MB
Financial Capital Trust I.

         2.       DELAWARE TRUSTEE. The name and business address of the trustee
of the Trust in the State of Delaware is Wilmington Trust Company, Rodney Square
North, 1100 North Market Street, Wilmington, Delaware 19890-0001, Attention:
Corporate Trust Department.

         3.       EFFECTIVE DATE. This Certificate of Trust shall be effective
upon filing.

         IN WITNESS WHEREOF, the undersigned has executed this Certificate of
Trust in accordance with Section 3811(a) of the Act.

                                      WILMINGTON TRUST COMPANY, as Trustee

                                      By:    ___________________________________
                                      Name:  ___________________________________
                                      Title: ___________________________________

                                       A-1
<Page>

                                    EXHIBIT B

                      THIS CERTIFICATE IS NOT TRANSFERABLE

CERTIFICATE NUMBER 1                         NUMBER OF COMMON SECURITIES 65,000.

                    CERTIFICATE EVIDENCING COMMON SECURITIES
                                       OF
                          MB FINANCIAL CAPITAL TRUST I

                                COMMON SECURITIES
                   LIQUIDATION AMOUNT $25 PER COMMON SECURITY

         MB FINANCIAL CAPITAL TRUST I, a statutory business trust created
under the laws of the State of Delaware (the "Trust"), hereby certifies that
MB FINANCIAL, INC. (the "Holder") is the registered owner of sixty-five
thousand (65,000) common securities of the Trust representing undivided
beneficial interests in the assets of the Trust and designated the Common
Securities (liquidation amount $25 per Common Security) (the "Common
Securities"). In accordance with Section 510 of the Trust Agreement (as
defined below), the Common Securities are not transferable and any attempted
transfer hereof shall be void. The designations, rights, privileges,
restrictions, preferences, and other terms and provisions of the Common
Securities are set forth in, and this certificate and the Common Securities
represented hereby are issued and shall in all respects be subject to the
terms and provisions of, the Amended and Restated Trust Agreement of the
Trust dated as of August 16, 2002, as the same may be amended from time to
time (the "Trust Agreement"), including the designation of the terms of the
Common Securities as set forth therein. The Trust shall furnish a copy of the
Trust Agreement to the Holder without charge upon written request to the
Trust at its principal place of business or registered office.

         Upon receipt of this certificate, the Holder is bound by the Trust
Agreement and is entitled to the benefits thereunder.

         IN WITNESS WHEREOF, one of the Administrative Trustees of the Trust
has executed this certificate this 16th day of August 2002.

                                      MB FINANCIAL CAPITAL TRUST I

                                      By:    ___________________________________
                                      Name:  ___________________________________
                                      Title: ___________________________________

                                       B-1
<Page>

                                    EXHIBIT C

                    AGREEMENT AS TO EXPENSES AND LIABILITIES

         AGREEMENT AS TO EXPENSES AND LIABILITIES (this "Agreement") dated as
of August 16, 2002 between MB FINANCIAL, INC., a Maryland corporation (the
"Company"), and MB FINANCIAL CAPITAL TRUST I, a Delaware business trust (the
"Trust").

                                    RECITALS

         WHEREAS, the Trust intends to issue its common securities (the
"Common Securities") to, and receive 8.60% Subordinated Debentures (the
"Debentures") from, the Company and to issue and sell up to 2,392,000 8.60%
Cumulative Trust Preferred Securities (the "Preferred Securities") with such
powers, preferences and special rights and restrictions as are set forth in
the Amended and Restated Trust Agreement of the Trust dated as of August 16,
2002, as the same may be amended from time to time (the "Trust Agreement");
and

         WHEREAS, the Company shall directly or indirectly own all of the Common
Securities of the Trust and shall issue the Debentures.

         NOW, THEREFORE, in consideration of the purchase by each holder of the
Preferred Securities, which purchase the Company hereby agrees shall benefit the
Company and which purchase the Company acknowledges shall be made in reliance
upon the execution and delivery of this Agreement, the Company, including in its
capacity as holder of the Common Securities, and the Trust hereby agree as
follows:

                                    ARTICLE I

         Section 1.1. Guarantee by the Company.

         Subject to the terms and conditions hereof, the Company, including in
its capacity as holder of the Common Securities, hereby irrevocably and
unconditionally guarantees to each person or entity to whom the Trust is now or
hereafter becomes indebted or liable (the "Beneficiaries") the full payment when
and as due, of any and all Obligations (as hereinafter defined) to such
Beneficiaries. As used herein, "Obligations" means any costs, expenses or
liabilities of the Trust other than obligations of the Trust to pay to the
holders of any Preferred Securities or other similar interests in the Trust the
amounts due such holders pursuant to the terms of the Preferred Securities or
such other similar interests, as the case may be. This Agreement is intended to
be for the benefit of, and to be enforceable by, all such Beneficiaries, whether
or not such Beneficiaries have received notice hereof.

         Section 1.2. Term of Agreement.

         This Agreement shall terminate and be of no further force and effect
upon the later of (a) the date on which full payment has been made of all
amounts payable to all holders of all the Preferred Securities (whether upon
redemption, liquidation, exchange or otherwise); and (b) the

                                       C-1
<Page>

date on which there are no Beneficiaries remaining; provided, however, that this
Agreement shall continue to be effective or shall be reinstated, as the case may
be, if at any time any holder of the Preferred Securities or any Beneficiary
must restore payment of any sums paid under the Preferred Securities, under any
obligation under the Preferred Securities Guarantee Agreement dated the date
hereof by the Company and Wilmington Trust Company as guarantee trustee, or
under this Agreement for any reason whatsoever. This Agreement is continuing,
irrevocable, unconditional and absolute.

         Section 1.3. Waiver of Notice.

         The Company hereby waives notice of acceptance of this Agreement and of
any obligation to which it applies or may apply, and the Company hereby waives
presentment, demand for payment, protest, notice of nonpayment, notice of
dishonor, notice of redemption and all other notices and demands.

         Section 1.4. No Impairment.

         The obligations, covenants, agreements and duties of the Company under
this Agreement shall in no way be affected or impaired by reason of the
happening from time to time of any of the following:

         (a)      the extension of time for the payment by the Trust of all or
any portion of the Obligations or for the performance of any other obligation
under, arising out of, or in connection with, the Obligations;

         (b)      any failure, omission, delay or lack of diligence on the part
of the Beneficiaries to enforce, assert or exercise any right, privilege, power
or remedy conferred on the Beneficiaries with respect to the Obligations or any
action on the part of the Trust granting indulgence or extension of any kind; or

         (c)      the voluntary or involuntary liquidation, dissolution, sale of
any collateral, receivership, insolvency, bankruptcy, assignment for the benefit
of creditors, reorganization, arrangement, composition or readjustment of debt
of, or other similar proceedings affecting, the Trust or any of the assets of
the Trust.

         There shall be no obligation of the Beneficiaries to give notice to, or
obtain the consent of, the Company with respect to the happening of any of the
foregoing.

         Section 1.5. Enforcement.

         A Beneficiary may enforce this Agreement directly against the Company,
and the Company waives any right or remedy to require that any action be brought
against the Trust or any other person or entity before proceeding against the
Company.

                                       C-2
<Page>

                                   ARTICLE II

         Section 2.1. Binding Effect.

         All guarantees and agreements contained in this Agreement shall bind
the successors, assigns, receivers, trustees and representatives of the Company
and shall inure to the benefit of the Beneficiaries.

         Section 2.2. Amendment.

         So long as there remains any Beneficiary or any Preferred Securities of
any series are outstanding, this Agreement shall not be modified or amended in
any manner adverse to such Beneficiary or to the holders of the Preferred
Securities.

         Section 2.3. Notices.

         Any notice, request or other communication required or permitted to be
given hereunder shall be given in writing by delivering the same by facsimile
transmission (confirmed by mail), telex, or by registered or certified mail,
addressed as follows (and if so given, shall be deemed given when mailed or upon
receipt of an answer back, if sent by telex):

         MB Financial Capital Trust I c/o MB Financial, Inc., 801 West Madison
Street, Chicago, IL 60607. Facsimile No.: (773) 278-0092. Attention: Chief
Financial Officer.

         MB Financial, Inc., 801 West Madison Street, Chicago, IL 60607.
Facsimile No.: (773) 278-0092. Attention: Chief Financial Officer.

         Section 2.4. Governing Law.

         This Agreement shall be governed by and construed and interpreted in
accordance with the laws of the State of New York (without regard to conflict of
laws principles).

         [The remainder of this page has been left blank intentionally]

                                       C-3
<Page>

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

                                      MB FINANCIAL, INC.

                                      By:    ___________________________________
                                      Name:  ___________________________________
                                      Title: ___________________________________

                                      MB FINANCIAL CAPITAL TRUST I

                                      By:    ___________________________________
                                      Name:  ___________________________________
                                      Title: Administrative Trustee

                                       C-4
<Page>

                               EXHIBIT D

Certificate Number 1                    Number of Preferred Securities 2,080,000
CUSIP NO. 57887Q 209

                   Certificate Evidencing Preferred Securities
                                       of
                          MB Financial Capital Trust I

                    __% Cumulative Trust Preferred Securities
                 (Liquidation Amount $25 per Preferred Security)

         MB FINANCIAL CAPITAL TRUST I, a statutory business trust created
under the laws of the State of Delaware (the "Trust"), hereby certifies that
Cede & Co. (the "Holder") is the registered owner of 2,080,000 preferred
securities (the "Preferred Securities") of the Trust representing undivided
beneficial interests in the assets of the Trust and designated the 8.60%
Cumulative Trust Preferred Securities (Liquidation Amount $25 per Preferred
Security). The Preferred Securities are transferable on the books and records
of the Trust, in person or by a duly authorized attorney, upon surrender of
this Certificate duly endorsed and in proper form for transfer as provided in
Section 504 of the Trust Agreement (as defined herein). The designations,
rights, privileges, restrictions, preferences, and other terms and provisions
of the Preferred Securities are set forth in, and this Certificate and the
Preferred Securities represented hereby are issued and shall in all respects
be subject to the terms and provisions of, the Amended and Restated Trust
Agreement of the Trust dated as of August 16, 2002, as the same may be
amended from time to time (the "Trust Agreement"), including the designation
of the terms of the Preferred Securities as set forth therein. The Holder is
entitled to the benefits of the Preferred Securities Guarantee Agreement
entered into by MB Financial, Inc., a Maryland corporation, and Wilmington
Trust Company, as guarantee trustee, dated as of August 16, 2002 (the
"Guarantee"), to the extent provided therein. The Trust shall furnish a copy
of the Trust Agreement and the Guarantee to the Holder without charge upon
written request to the Trust at its principal place of business or registered
office.

         Upon receipt of this Certificate, the Holder is bound by the Trust
Agreement and is entitled to the benefits thereunder.

         Unless the Certificate of Authentication has been manually executed by
the Authentication Agent, this Certificate is not valid or effective.

                                       D-1
<Page>

         IN WITNESS WHEREOF, the Administrative Trustees of the Trust have
executed this Certificate as of this 16th day of August 2002.

                                      MB FINANCIAL CAPITAL TRUST I

                                      By:    ___________________________________

                                      Mitchell Feiger
                                      Administrative Trustee

                                      By:    ___________________________________

                                      Jill York
                                      Administrative Trustee

                                      By:    ___________________________________

                                      Doria Koros
                                      Administrative Trustee

                                     LEGEND

                           FOR CERTIFICATES EVIDENCING

                        GLOBAL PREFERRED SECURITIES ONLY:

Unless this certificate is presented by an authorized representative of the
Depository Trust Company, a New York corporation ("DTC"), to Issuer or its agent
for registration or transfer, exchange, or payment, and any certificate issued
is registered in the name of Cede & Co. or in such other name as is requested by
an authorized representative of DTC (and any payment is made to Cede & Co. or to
such other entity as is required by an authorized representative of DTC), ANY
TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON
IS WRONGFUL inasmuch as the registered owner hereof, Cede & Co., has an interest
herein.

                                       D-2
<Page>

                        [FORM OF REVERSE OF CERTIFICATE]

         The Trust will furnish without charge to any registered owner of
Preferred Securities who so requests, a copy of the Trust Agreement and the
Guarantee. Any such request should be in writing and addressed to MB Financial
Capital Trust I, c/o MB Financial, Inc., 801 West Madison Street, Chicago,
Illinois 60607 or to the Registrar named on the face of this Certificate.

         The following abbreviations, when used in the inscription on the face
of this certificate, shall be construed as though they were written out in full
according to applicable laws or regulations:

<Table>
<S><C>

TEN COM     -     as tenants in common                           UNIF GIFT MIN ACT     -     Custodian
TEN ENT     -     as tenants by the entireties
JT TEN      -     as joint tenants with right of                 (Cust)                      (Minor)
                  survivorship and not as tenant in              under Uniform Gifts to Minors Act
                  common
TOD               transfer on death direction in event of        (State)
                  owner's death, to person named on              UNIF TRF MIN ACT      -     Custodian
                  face and subject to TOD rules referenced
                                                                 (Minor)                     (until age)
                                                                 under Uniform Transfers to Minors Act

                                                                 (State)
</Table>

         Additional abbreviations may also be used though not in the above list.

         FOR VALUE RECEIVED, the undersigned hereby sell, assign and transfer
unto:

________________________________________________________________________________
________________________________________________________________________________
(Please insert Social Security or other identifying number of assignee)

________________________________________________________________________________
(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)

________________________________________________________________________________
________________________________________________________________________________
____________________ Preferred Securities represented by the within Certificate,

and do(es) hereby irrevocably constitute and appoint ___________________________
_______________________________________________________________________ attorney
to transfer the said Preferred Securities on the books of the within-named Trust
with full power of substitution in the premises.

Dated:_______________________

                                    Signature:__________________________________
                                    NOTICE: THE SIGNATURE TO THIS ASSIGNMENT
                                    MUST CORRESPOND WITH THE NAME AS WRITTEN
                                    UPON THE FACE OF THE CERTIFICATE IN EVERY
                                    PARTICULAR, WITHOUT ALTERNATION OR
                                    ENLARGEMENT OR ANY CHANGE WHATEVER.

SIGNATURE(S) GUARANTEED:

________________________________________________________________________________
THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION
(BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH
MEMBERSHIP IN AN APPROVED MEDALLION SIGNATURE GUARANTEE PROGRAM), PURSUANT TO
S.E.C. RULE 17Ad-15.

                                       D-3
<Page>

                                    EXHIBIT E

                      FORM OF CERTIFICATE OF AUTHENTICATION

                          CERTIFICATE OF AUTHENTICATION

           This is one of the ___% Cumulative Trust Preferred Securities
referred to in the within-mentioned Amended and Restated Trust Agreement.

Dated:

WILMINGTON TRUST COMPANY,
as Authenticating Agent and Registrar

By:     __________________________________
        Authorized Signatory

                                       E-1

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