<Page>

                                                                     EXHIBIT 4.5

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

                           OLD SECOND CAPITAL TRUST I


                      AMENDED AND RESTATED TRUST AGREEMENT


                                      among


                     OLD SECOND BANCORP, INC., as Depositor


                  WILMINGTON TRUST COMPANY, as Property Trustee


                 WILMINGTON TRUST COMPANY, as Delaware Trustee,


                                       and


                    THE ADMINISTRATIVE TRUSTEES NAMED HEREIN


                          Dated as of ___________, 2003

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

<Page>

                                TABLE OF CONTENTS

<Table>
<Caption>
                                                                                                 PAGE
                                                                                            
ARTICLE I           DEFINED TERMS..................................................................2

    Section 101.    Definitions....................................................................2

ARTICLE II          ESTABLISHMENT OF THE TRUST....................................................11

    Section 201.    Name..........................................................................11
    Section 202.    Office of the Delaware Trustee; Principal Place of Business...................11
    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.....................................................17

    Section 401.    Distributions.................................................................17
    Section 402.    Redemption....................................................................17
    Section 403.    Subordination of the Common Securities........................................20
    Section 404.    Payment Procedures............................................................20
    Section 405.    Tax Returns and Reports.......................................................20
    Section 406.    Payment of Taxes, Duties, Etc. of the Trust...................................21
    Section 407.    Payments under the Indenture..................................................21

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............................................25
    Section 507.    Access to List of the Securityholders' Names and Addresses....................25
</Table>

<Page>

<Table>
                                                                                            
    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.    [Reserved]....................................................................27
    Section 513.    Notices.......................................................................27
    Section 514.    Rights of the Securityholders.................................................27

ARTICLE VI          ACTS OF THE SECURITYHOLDERS; MEETINGS; VOTING.................................28

    Section 601.    Limitations on Voting Rights..................................................28
    Section 602.    Notice of Meetings............................................................29
    Section 603.    Meetings of the Preferred Securityholders.....................................29
    Section 604.    Voting Rights.................................................................29
    Section 605.    Proxies, Etc..................................................................29
    Section 606.    Securityholder Action by Written Consent......................................30
    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
                        Trustee...................................................................32
    Section 703.    Representations and Warranties of the Depositor...............................33

ARTICLE VIII        TRUSTEES......................................................................34

    Section 801.    Certain Duties and Responsibilities...........................................34
    Section 802.    Certain Notices...............................................................35
    Section 803.    Certain Rights of the Property Trustee........................................36
    Section 804.    Not Responsible for Recitals or Issuance of Securities........................38
    Section 805.    May Hold Securities...........................................................38
    Section 806.    Compensation; Indemnity; Fees.................................................38
    Section 807.    Corporate Property Trustee Required; Eligibility of Trustees..................39
    Section 808.    Conflicting Interests.........................................................39
    Section 809.    Co-Trustees and Separate Trustee..............................................39
    Section 810.    Resignation and Removal; Appointment of Successor.............................41
    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
</Table>

                                      -ii-
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<Table>
                                                                                            
    Section 817.    Number of Trustees............................................................43
    Section 818.    Delegation of Power...........................................................44
    Section 819.    Voting........................................................................44

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......................................................48

    Section 1001.   Limitation of Rights of the Securityholders...................................48
    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....................................................................50
    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
</Table>

EXHIBITS

Exhibit A     Certificate of Trust
Exhibit B     Form of Common Securities Certificate
Exhibit C     Form of Expense Agreement
Exhibit D     Form of Preferred Securities Certificate
Exhibit E     Form of Certificate of Authentication

                                      -iii-
<Page>

                              CROSS-REFERENCE TABLE

<Table>
<Caption>
SECTION OF                                                     SECTION OF AMENDED
TRUST INDENTURE ACT                                                  AND RESTATED
OF 1939, AS AMENDED                                               TRUST AGREEMENT
- -------------------                                            ------------------
                                                               
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-
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                      AMENDED AND RESTATED TRUST AGREEMENT

     AMENDED AND RESTATED TRUST AGREEMENT, dated as of ________, 2003, among (a)
OLD SECOND BANCORP, INC., a Delaware corporation (including any successors or
assigns, the "DEPOSITOR"), (b) WILMINGTON TRUST COMPANY, a Delaware 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 Delaware 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) William B. Skoglund, an individual, J. Douglas Cheatham,
an individual, and Robin Hodgson, an individual, each of whose address is c/o
Old Second Bancorp, Inc., 37 River Street, Aurora, Illinois 60506-4172 (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, the Delaware Trustee, and William B. Skoglund,
J. Douglas Cheatham and Robin Hodgson, each as an Administrative Trustee,
have heretofore duly declared and established a statutory trust pursuant to
the Delaware Statutory Trust Act (as hereinafter defined) by the entering
into of that certain Trust Agreement, dated as of _________, 2003 (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
________, 2003, 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 William B. Skoglund, J. Douglas
Cheatham and Robin Hodgson, 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.

                                       -2-
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     "AUTHENTICATING AGENT" means an authenticating agent with respect to the
Preferred Securities appointed by the Property Trustee pursuant to Section 503.

     "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 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 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 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 a general assignment by such Person 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.

                                       -3-
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     "CERTIFICATE DEPOSITARY AGREEMENT" means the agreement among Depositor,
Trust and DTC, as the initial Clearing Agency, dated as of the Closing Date,
substantially in the form attached as Exhibit F 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.

     "CHANGE IN 1940 ACT LAW" shall have the meaning set forth in the definition
of "Investment Company Event."

     "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 $10 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 Old Second Bancorp, Inc., a Delaware 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, Attention: Corporate Trust Administration.

     "DEBENTURE EVENT OF DEFAULT" means an "Event of Default" as defined in
Section 7.1 of the Indenture.

                                       -4-
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     "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.

     "DEBENTURES" means the $25,773,200 (or $29,640,000 if the Underwriters
exercise their Option as such term is defined in the Underwriting Agreement)
aggregate principal amount of the Depositor's ____% Subordinated Debentures due
2033, 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 STATUTORY 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 continued hereunder and not in its
individual capacity, or its successor in interest in such capacity, or any
successor trustee appointed as herein provided.

     "DEPOSITORY" 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

                                       -5-
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          (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 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 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 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 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 ____________, 2003, between
the Depositor and the Debenture Trustee, as trustee, as amended or supplemented
from time to time, pertaining to the Debentures of the Depositor.

                                       -6-
<Page>

     "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 a law firm having a recognized national
tax and securities law practice 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 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 $10 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 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;

                                       -7-
<Page>

          (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.

     "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 514; 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

                                       -8-
<Page>

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

     "PREFERRED SECURITY" means an undivided beneficial interest in the assets
of the Trust, having a Liquidation Amount of $10 and having the rights provided
therefor in this Trust Agreement, including the right to receive Distributions
and a Liquidation Distribution as provided herein.

     "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.

                                       -9-
<Page>

     "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 Statutory Trust
Act.

     "TRUST" means the Delaware statutory trust created and 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 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 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
_________, 2003, among the Trust, the Depositor and Howe Barnes Investments,
Inc., as representatives of the several Underwriters named therein, and the
Underwriters named therein.

     "UNDERWRITERS" shall have the meaning specified in the Underwriting
Agreement.

                                      -10-
<Page>

                                   ARTICLE II

                           ESTABLISHMENT OF THE TRUST

   SECTION 201.  NAME. The Trust continued hereby shall be known as "OLD SECOND
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 Administration, 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 Old Second Bancorp, Inc., 37 River Street, Aurora,
Illinois 60506-4172, Attention: Chief Executive Officer.

   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 $10, 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 _________, 2003, 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 2,500,000 Preferred Securities having an aggregate
Liquidation Amount of $25,000,000 against receipt of the aggregate purchase
price of such Preferred Securities of $25,000,000, which amount such
Administrative Trustee shall promptly deliver to the Property Trustee. If the
Underwriters exercise their 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 375,000 Preferred Securities having an aggregate
Liquidation Amount of up to $3,750,000 against receipt of the aggregate purchase
price of such Preferred Securities of up to $3,750,000, 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

                                      -11-
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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 77,320 Common
Securities having an aggregate Liquidation Amount of $773,200 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 $25,773,200, 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 $25,773,200.

     (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 up to 11,600 Common Securities having an aggregate
Liquidation Amount of up to $116,000 against payment by the Depositor of an
amount equal to the product of $10 multiplied by the number of additional Common
Securities purchased by Depositor. 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
Property Trustee on behalf of the Trust and having an aggregate principal amount
of up to $3,866,000, 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 $3,866,000, such aggregate amount to be equal to the sum of the
amounts received from the Depositor pursuant to the first sentence of this
Section 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, advisable 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 Statutory 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

                                      -12-
<Page>

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;

                  (D)   assisting in the listing of the Preferred Securities
          upon the Nasdaq National Market or 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)   the taking of 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
          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

                                      -13-
<Page>

                  (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;

                  (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).

                                      -14-
<Page>

     (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 relation to the Preferred Securities, the Debentures,
     and the Guarantee 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 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

                                      -15-
<Page>

           (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 but in no
event shall the Depositor, Administrative Trustee, or Property Trustee have the
power to take any action, permit any action to be taken, or refrain to act in
such a manner, that could cause the Trust to not be treated as a grantor trust
for federal income tax purposes. The Property Trustee shall take any action so
directed by one or more of the Administrative Trustees.

   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.

                                      -16-
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                                   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 ____________, 2003. 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 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 _____% 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) Only on each Debenture Redemption Date and at
maturity of the Debentures shall the Trust be required to redeem a Like Amount
of Trust Securities at the Redemption Price.

                                      -17-
<Page>

     (b)  Notice of redemption shall be given by the Property Trustee by
first-class mail, postage prepaid, mailed not less than 30 nor more than 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;

            (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 Property Trustee 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 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

                                      -18-
<Page>

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 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 15 days
prior to 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 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; PROVIDED, HOWEVER, that in the event the redemption
relates only to Preferred Securities purchased and held by the Depositor being
redeemed in exchange for a Like Amount of Debentures, the Property Trustee shall
select those particular Preferred Securities for redemption. 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

                                      -19-
<Page>

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 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 forms 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
                                      -20-
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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 and the Securityholders shall provide any information required by the
Property Trustee in connection with such requirements.

   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 514(b) or (c) hereof.

                                    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 514.

   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

                                      -21-
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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 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.

     (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

                                      -22-
<Page>

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
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, only upon surrender for
registration of transfer of any Preferred Securities Certificate at the office
or agency maintained pursuant to

                                      -23-
<Page>

Section 508 shall the Administrative Trustees or any one of them 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.

     (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

                                      -24-
<Page>

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.

   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

                                      -25-
<Page>

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 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 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) 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.

                                      -26-
<Page>

   SECTION 512.  [RESERVED].

   SECTION 513.  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 obligation to provide notice to
the owners of the beneficial interest in the Global Preferred Securities.

   SECTION 514.  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 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 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.

                                      -27-
<Page>

                                   ARTICLE VI

                  ACTS OF THE SECURITYHOLDERS; MEETINGS; VOTING

   SECTION 601.  LIMITATIONS ON VOTING RIGHTS. (a) Except as provided in this
Section 601, in Sections 514, 810 and 1002 and in the Indenture and as otherwise
set forth in the Guarantee or required by law, no 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; 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 Trust 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 Trust Securities. The Trustees shall not revoke any action previously
authorized or approved by a vote of the Holders of the Outstanding Trust
Securities, except when authorized by a subsequent vote of the Holders of the
Outstanding Trust 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 Trust 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.

                                      -28-
<Page>

   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 15 days and
not more than 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.

   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 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 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 $10
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.

                                      -29-
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   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 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

                                      -30-
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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.

     (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 Trustee 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;

                                      -31-
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          (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 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;

          (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

                                      -32-
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     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;

          (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

                                      -33-
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     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.

                                  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.

                                      -34-
<Page>

     (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:

            (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 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.

                                      -35-
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   SECTION 803.  CERTAIN RIGHTS OF THE PROPERTY TRUSTEE. Subject to the
provisions of Section 801:

          (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 to the extent not inconsistent with the treatment of the Trust as a
     grantor trust for federal income tax purposes; 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 re-recording, refiling or
     reregistration thereof;

                                      -36-
<Page>

          (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;

          (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

                                      -37-
<Page>

     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.

   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).

                                      -38-
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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 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

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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.

     (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.

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           (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.

     (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 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

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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 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

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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.

   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 American Stock Exchange,
Inc., 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.

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     (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 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 June 30, 2034 (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;

                                      -44-
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          (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 Debenture); and

          (d)     the entrance of an order for dissolution of the Trust 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 Statutory 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 30 nor more than 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.

                                      -45-
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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 the Nasdaq National
Market or on such other securities exchange or other organization 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

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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, 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.

                                      -47-
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                                    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 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 any national
securities exchange or other organization on which the Preferred Securities are
then quoted or listed (including, if applicable, the Nasdaq National Market);
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
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.

                                      -48-
<Page>

     (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 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.

     (h)  Prior to the execution of an amendment to this Trust Agreement, the
Property Trustee shall receive an Opinion of Counsel stating that such amendment
does not conflict with the Trust being treated as a grantor trust for federal
income tax purposes.

   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

                                      -49-
<Page>

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 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 Old Second Bancorp, Inc., 37 River
Street, Aurora, Illinois 60506-4172, Attention: Chief Executive Officer,
facsimile no.: (630) 906-3208. 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 Administration; (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 Old Second Capital
Trust I, c/o Chief Executive Officer, Old Second Bancorp, 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

                                      -50-
<Page>

(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 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.

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

                                      -51-
<Page>

                                   OLD SECOND BANCORP, INC., as Depositor


                                   By
                                     -------------------------------------------
                                       Name:  William B. Skoglund
                                       Title: President and Chief Executive
                                              Officer


                                   WILMINGTON TRUST COMPANY, as Property
                                     Trustee


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


                                   WILMINGTON TRUST COMPANY, as Delaware
                                     Trustee


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


                                   OLD SECOND CAPITAL TRUST I


                                   ---------------------------------------------
                                    William B. Skoglund, as Administrative
                                    Trustee


                                   ---------------------------------------------
                                    J. Douglas Cheatham, as Administrative
                                    Trustee


                                   ---------------------------------------------
                                    Robin Hodgson, as Administrative Trustee

                                      -52-
<Page>

                                    EXHIBIT A

                              CERTIFICATE OF TRUST

                                       OF

                           OLD SECOND CAPITAL TRUST I

     THIS CERTIFICATE OF TRUST OF OLD SECOND CAPITAL TRUST I (the "TRUST"),
is being duly executed and filed by Wilmington Trust Company, a Delaware
banking corporation, William B. Skoglund, J. Douglas Cheatham and Robin
Hodgson, each an individual, as trustees, to form a statutory trust under the
Delaware Statutory Trust Act (12 Del. C. Section 3801 ET SEQ.) (the "ACT").

          1.      NAME. The name of the statutory trust formed hereby is Old
     Second 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 Administration.

          3.      EFFECTIVE DATE. This Certificate of Trust shall be effective
     on __________, 2003.

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


                                   WILMINGTON TRUST COMPANY, as Trustee


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


                                   ---------------------------------------------
                                    William B. Skoglund, as Administrative
                                    Trustee


                                   ---------------------------------------------
                                    J. Douglas Cheatham, as Administrative
                                    Trustee

<Page>

                                   ---------------------------------------------
                                    Robin Hodgson, as Administrative Trustee

<Page>

                                    EXHIBIT B

                      THIS CERTIFICATE IS NOT TRANSFERABLE

CERTIFICATE NUMBER _________               NUMBER OF COMMON SECURITIES ________

                    CERTIFICATE EVIDENCING COMMON SECURITIES
                                       OF
                           OLD SECOND CAPITAL TRUST I

                                COMMON SECURITIES
                   LIQUIDATION AMOUNT $10 PER COMMON SECURITY

     OLD SECOND CAPITAL TRUST I, a statutory trust created under the laws
of the State of Delaware (the "TRUST"), hereby certifies that OLD SECOND
BANCORP, INC. (the "HOLDER") is the registered owner of ________________________
(________________) common securities of the Trust representing undivided
beneficial interests in the assets of the Trust and designated the Common
Securities (liquidation amount $10 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 _____________,
2003, 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 ____ day of ____________ 2003.


                                   OLD SECOND CAPITAL TRUST I


                                   By:
                                       -----------------------------------
                                       Name:  William B. Skoglund
                                       Title: Administrative Trustee

<Page>

                                    EXHIBIT C

                    AGREEMENT AS TO EXPENSES AND LIABILITIES

     AGREEMENT AS TO EXPENSES AND LIABILITIES (this "AGREEMENT") dated as of
________, 2003 between OLD SECOND BANCORP, INC., a Delaware corporation (the
"COMPANY"), and OLD SECOND CAPITAL TRUST I, a Delaware statutory trust (the
"TRUST").

                                    RECITALS

     WHEREAS, the Trust intends to issue its common securities (the "COMMON
SECURITIES") to, and receive ___% Subordinated Debentures due 2033 (the
"DEBENTURES") from, the Company and to issue and sell Old Second Capital Trust I
____% 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 __________,
2003, as the same may be amended from time to time (the "TRUST AGREEMENT");

     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 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

<Page>

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.

                                   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.

                                       C-2
<Page>

   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):


                        Old Second Capital Trust I
                        c/o Old Second Bancorp, Inc.
                        37 River Street
                        Aurora, Illinois 60506-4172
                        Facsimile No.: (630) 906-3208
                        Attention: Chief Executive Officer


                        Old Second Bancorp, Inc.
                        37 River Street
                        Aurora, Illinois 60506-4172
                        Facsimile No.: (630) 906-3208
                        Attention: Chief Executive 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 Illinois
(without regard to conflict of laws principles).

                            [SIGNATURE PAGE FOLLOWS]

                                       C-3
<Page>

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


                              OLD SECOND BANCORP, INC.


                              By:
                                  --------------------------------------------
                                  Name:  William B. Skoglund
                                  Title: President and Chief Executive Officer


                              OLD SECOND CAPITAL TRUST I


                              By:
                                  --------------------------------------------
                                  Name:  J. Douglas Cheatham
                                  Title: Administrative Trustee

                                       C-4
<Page>

                                    EXHIBIT D

CERTIFICATE NUMBER _________            NUMBER OF PREFERRED SECURITIES ________

                   CERTIFICATE EVIDENCING PREFERRED SECURITIES
                                       OF
                           OLD SECOND CAPITAL TRUST I
                  _____% CUMULATIVE TRUST PREFERRED SECURITIES
                 (LIQUIDATION AMOUNT $10 PER PREFERRED SECURITY)

                            CUSIP NO. ______________

     OLD SECOND CAPITAL TRUST I, a statutory trust created under the
laws of the State of Delaware (the "TRUST"), hereby certifies that
______________ (the "HOLDER") is the registered owner of _____ preferred
securities (the "PREFERRED SECURITIES") of the Trust representing undivided
beneficial interests in the assets of the Trust and designated the ___%
Cumulative Trust Preferred Securities (Liquidation Amount $10 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 ________, 2003, 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 Old Second Bancorp,
Inc., a Delaware corporation, and Wilmington Trust Company, as guarantee
trustee, dated as of ________, 2003 (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.

<Page>

     IN WITNESS WHEREOF, the Administrative Trustees of the Trust have executed
this Certificate as of this ________ day of ________, 2003.


                                       OLD SECOND CAPITAL TRUST I


                                       By:
                                           ------------------------------------
                                           Name:  William B. Skoglund
                                           Title: Administrative Trustee


                                       By:
                                           ------------------------------------
                                           Name:  J. Douglas Cheatham
                                           Title: Administrative Trustee


                                       By:
                                           ------------------------------------
                                           Name:  Robin Hodgson
                                           Title: 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 Old Second Capital Trust I,
c/o Old Second Bancorp, Inc., 37 River Street Aurora, Illinois 60506-4172 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:

  TEN COM         -  as tenants in common

  TEN ENT         -  as tenants by the entireties

  JT TEN          -  as joint tenants with right of
                     survivorship and not as tenants in
                     common

  TOD             -  transfer on death direction in event
                     owner's death, to person named on
                     face and subject to TOD rules
                     referenced

UNIF GIFT MIN ACT - ________ Custodian ________
                    (Cust)               (Minor)
                    under Uniform Gifts to Minors Act

                    ____________________________
                              (State)

UNIF TRF MIN ACT - ________ Custodian (until age)
                   _____________________ under
                   Uniform (Minor)  Transfers to
                   Minors Act ________________
                                  (State)

     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 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.

                                       D-3
<Page>

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-4
<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